(19) |
|
|
(11) |
EP 3 229 257 B1 |
(12) |
EUROPEAN PATENT SPECIFICATION |
(45) |
Mention of the grant of the patent: |
|
13.05.2020 Bulletin 2020/20 |
(22) |
Date of filing: 04.11.2015 |
|
(51) |
International Patent Classification (IPC):
|
(86) |
International application number: |
|
PCT/CN2015/093751 |
(87) |
International publication number: |
|
WO 2016/086747 (09.06.2016 Gazette 2016/23) |
|
(54) |
CIRCUIT BREAKER LOCKING DEVICE
SCHUTZSCHALTERSPERRVORRICHTUNG
DISPOSITIF DE VERROUILLAGE DE DISJONCTEUR
|
(84) |
Designated Contracting States: |
|
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL
NO PL PT RO RS SE SI SK SM TR |
(30) |
Priority: |
01.12.2014 CN 201420743118 U
|
(43) |
Date of publication of application: |
|
11.10.2017 Bulletin 2017/41 |
(73) |
Proprietor: Zhejiang Chint Electrics Co., Ltd. |
|
Yueqing, Zhejiang 325603 (CN) |
|
(72) |
Inventors: |
|
- LUO, Jingxiang
Yueqing
Zhejiang 325603 (CN)
- YANG, Yingjie
Yueqing
Zhejiang 325603 (CN)
- WANG, Keming
Yueqing
Zhejiang 325603 (CN)
- MA, Shigang
Yueqing
Zhejiang 325603 (CN)
|
(74) |
Representative: Petraz, Gilberto Luigi et al |
|
GLP S.r.l. Viale Europa Unita, 171
33100 Udine Viale Europa Unita, 171
33100 Udine (IT) |
(56) |
References cited: :
CN-A- 1 226 074 CN-U- 202 210 497 US-A- 5 714 940
|
CN-U- 202 210 497 CN-U- 204 348 653 US-A- 5 982 258
|
|
|
|
|
|
|
|
|
Note: Within nine months from the publication of the mention of the grant of the European
patent, any person may give notice to the European Patent Office of opposition to
the European patent
granted. Notice of opposition shall be filed in a written reasoned statement. It shall
not be deemed to
have been filed until the opposition fee has been paid. (Art. 99(1) European Patent
Convention).
|
TECHNICAL FIELD
[0001] The invention relates to the field of low-voltage apparatuses, in particular to a
circuit breaker with a locking device.
BACKGROUND ART
[0002] There is a need for a circuit breaker to ensure that a switch should not be switched
on after a tripping trouble until the circuit breaker is unlocked artificially after
the trouble is removed, in a high-current power consumption site. But some circuit
breakers at present are not provided with effective locking devices, such that a mechanism
can store energy at once after the circuit breaker undergoes a tripping trouble, and
therefore a switching-off semi-shaft pushes a pressing plate of a controller base
backwards to ensure that the circuit breaker can be switched on. As thus, the safety
of operation personnel and the safety of customer's power consumption equipment are
affected when the circuit breaker is switched on after a system has a fault. Meanwhile,
a part of existing circuit breakers are also provided with locking devices, but because
the locking devices are relatively complicated in structure, the stability of locking
parts are reduced, and therefore the reliability of the locking devices is reduced.
Such a circuit breaker is known e.g. from the document
US 5 982 258 A.
SUMMARY OF THE INVENTION
[0003] An objective of the present invention is to overcome the defects of the prior art
and provide a circuit breaker with a locking device, which is firm in locking structure,
stable in action process and simple in mechanical structure.
[0004] To achieve said objective, the present invention adopts the following technical solutions:
a circuit breaker with a locking device, wherein the locking device comprises an executing
lever 1 and a pressing plate 2, wherein a hole shaft of the executing lever 1 is rotatably
mounted in a base 3 of a circuit breaker; an elastic piece 111 is arranged between
one end of the executing lever 1 and the base 3, and the other end of the executing
lever 1 is provided with a locking end 120 which can be connected with a locking portion
210 at one side of the pressing plate 2 in a locking manner. The pressing plate 2
is mounted in the base 3 and can rotatably oscillate relative to the base 3. The locking
portion 210 at one side of the pressing plate 2 comprises an unlocking surface 211
and a locking surface 212 which correspond to the locking end 120 respectively and
are adjacent to each other, and a sliding step 213 is arranged between the unlocking
surface 211 and the locking surface 212; a contact portion 220 which is in contact
connection with a circuit breaker operating mechanism is arranged at the other side
of the pressing plate 2. A magnetic actuator 5 which can drive the pressing plate
2 to oscillate is also arranged above the pressing plate 2 correspondingly. The magnetic
actuator 5 can push the pressing plate 2 to oscillate when the circuit breaker has
a fault, such that the locking end 120 arranged inside the unlocking surface 211 slides
into the locking surface 212 along the sliding step 213 under the energy-releasing
acting force of the elastic piece 111 so as to lock the pressing plate 2. Meanwhile,
the contact portion 220 capable of oscillating with the pressing plate 2 can limit
the operating mechanism to prevent the operating mechanism from resetting.
[0005] Further, the locking end 120 comprises a first acting surface 121 and a second acting
surface 122 which are of a V-shaped structure and are connected to each other; the
second acting surface 122 is connected with the end part of the executing lever 1
and parallel to the executing lever 1, and an acting end 123 formed at the junction
of the first acting surface 121 and the second acting surface 122 can be in contact
connection with the locking surface 212; the first acting surface 121 can be in obliquely
contact connection with the corresponding side of the sliding step 213, and therefore
a triangular structure can be formed by the locking surface 212, the first acting
surface 121 and one side of the sliding step 213 in case of locking.
[0006] Further, a slope 213b which can be matched with and in contact connection with the
first acting surface 121 is arranged at one side, corresponding to the first acting
surface 121, of the sliding step 213, and an obtuse angle is formed between the slope
213b and the locking surface 212.
[0007] Further, a circular arc surface 213a which is in sliding contact with the bottom
of the locking end 120 is arranged at the top of the sliding step 213.
[0008] Further, the pressing plate 2 is mounted on a support 4 in the base 3; a locking
portion 210 and a contact portion 220 are formed by extending respectively from two
sides of the pressing plate 2; a driving portion 240 corresponding to the magnetic
actuator 5 is arranged in the middle of the pressing plate 2; a rotary mounting portion
230 also extends out from the driving portion 240; a mounting cone frustum 231 which
can be rotatably connected with a hole shaft of the support 4 is arranged at each
of two sides, corresponding to the pressing plate 2, of the rotary mounting portion
230; the magnetic actuator 5 can push the driving portion 240 when the circuit breaker
has a fault, such that the pressing plate 2 can oscillate downwards along the mounting
cone frustums 231 relative to the support 4.
[0009] Further, a reset spring 232 which can drive the pressing plate 2 back to an initial
position is mounted on the mounting cone frustums 231, and two ends of the reset spring
232 are linked to the pressing plate 2 and the support 4 respectively.
[0010] Further, a reset driving end 110 corresponding to the elastic piece 111 and the locking
end 120 corresponding to the pressing plate 2 are arranged at two ends of the executing
lever 1 respectively, and the reset driving end 110 can drive the elastic piece 111
to store energy when the device is reset, such that the locking end 120 slides back
to the unlocking surface 211 from the locking surface 212; a fulcrum mounting hole
130 which is used for being rotatably connected with a hole shaft on the side wall
of the base 3 is also formed in the middle of the executing lever 1; a shaft pin 131
can be mounted inside the fulcrum mounting hole.
[0011] Further, the elastic piece 111 can be a spring arranged between the end part of the
executing lever 1 and the base 3, and a cone frustum 112 for limiting and fixing the
spring is arranged at the bottom of one end of the executing lever 1.
[0012] Further, the contact portion 220 is of an L-shaped structure and comprises a horizontal
baffle 221 and a vertical baffle 222 which are perpendicularly connected to each other;
the vertical baffle 222 is arranged perpendicularly on one side wall of the pressing
plate 2, and the horizontal baffle 221 is parallel to the side surface of the pressing
plate 2; the horizontal baffle 221 can oscillate with the rotation of the pressing
plate 2, thereby preventing a switching-off semi-shaft of the operating mechanism
from resetting to a switchable-on position.
[0013] Further, a baffle 214 corresponding to one side wall of the pressing plate 2 is also
arranged on the locking portion 210, and a connecting baffle 215 is arranged between
the end part, corresponding to the locking surface 212, of the baffle 214 and the
side wall of the pressing plate 2; a groove structure 216 corresponding to the locking
end 120 is formed jointly by the connecting baffle 215, the baffle 214, one side wall
of the pressing plate 2 and one side wall of the sliding step 213.
[0014] The circuit breaker with the locking device of the invention realizes locking of
the executing lever and the pressing plate to prevent the operating mechanism from
resetting by means of the locking portion and the locking end, when the circuit breaker
has a fault. And, the locking device is simple in mechanical structure, thereby improving
the reliability and the stability of the locking process. Furthermore, the locking
surface and the sliding step ensure that a stable and firm locking connection structure
is formed between the locking end and the locking surface, and improve the firmness
of the locking device.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015]
Fig. 1 is a structural schematic drawing of the invention.
Fig. 2 is a structural schematic drawing of an executing lever of the invention.
Fig. 3 is a structural schematic drawing of a pressing plate of the invention;
Fig. 4 is a front structural schematic drawing of an initial state of the invention.
Fig. 5 is a partial structural cross-sectional view along an A-A direction inside
an imaginary line of Fig. 4.
Fig. 6 is a front structural schematic drawing of a locking state of the invention.
Fig. 7 is a partial structural cross-sectional view along a B-B direction inside an
imaginary line of Fig. 6.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0016] The specific embodiments of a circuit breaker with a locking device of the invention
will be further illustrated as below in conjunction with the embodiments illustrated
in Figs. 1-7. The circuit breaker with the locking device of the present invention
is not limited to the description in the following embodiments.
[0017] According to the structural schematic drawing of the invention as illustrated in
Fig. 1, the circuit breaker with the locking device of the invention, wherein the
locking device comprises an executing lever 1 and a pressing plate 2, wherein a hole
shaft of the executing lever 1 is rotatably mounted in a base 3 of a circuit breaker.
An elastic piece 111 is arranged between one end of the executing lever 1 and the
base 3, and the other end of the executing lever 1 is provided with a locking end
120 which can be connected with a locking portion 210 at one side of the pressing
plate 2 in a locking manner. The pressing plate 2 is mounted in the base 3 and can
rotatably oscillate relative to the base 3. As illustrated in Fig. 3, the locking
portion 210 at one side of the pressing plate 2 comprises an unlocking surface 211
and a locking surface 212 which correspond to the locking end 120 respectively and
are adjacent to each other, and a sliding step 213 is arranged between the unlocking
surface 211 and the locking surface 212. A contact portion 220 which is in contact
connection with a circuit breaker operating mechanism is arranged at the other side
of the pressing plate 2. A magnetic actuator 5 which can drive the pressing plate
2 to oscillate is also arranged above the pressing plate 2 correspondingly. The magnetic
actuator 5 can push the pressing plate 2 to oscillate when the circuit breaker has
a fault, such that the locking end 120 arranged inside the unlocking surface 211 slides
into the locking surface 212 along the sliding step 213 under the energy-releasing
acting force of the elastic piece 111 so as to lock the pressing plate 2. Meanwhile,
the contact portion 220 capable of oscillating with the pressing plate 2 can limit
a switching-off semi-shaft of the operating mechanism from resetting to a highest
position, i.e., a switchable-on position. Because the executing lever is adopted to
lock the pressing plate, the switching-off semi-shaft of the operating mechanism cannot
reset to a highest point to finish switching-on after the circuit breaker has a fault,
and therefore a user can operate the circuit breaker to be switched on after searching
for a fault and remove the fault, so that the safety of operation personnel and the
safety of power supply equipment are ensured.
[0018] In particular, a support 4 capable of clamping and mounting the pressing plate 2
is also arranged in the base 3, the pressing plate 2 is rotatably mounted in the support
4 and corresponds to the magnetic actuator 5, and the magnetic actuator 5 can receive
a controller tripping instruction, i.e., pushing the pressing plate 2 to rotatably
oscillate relative to the support 4 when the circuit breaker has a fault, such that
the locking end 120 is connected with the locking surface 212 in a locking manner.
The support not only facilitates to assemble the locking device, but also provides
a stable support when the pressing plate oscillates and rotates so as to improve the
stability and reliability of the locking process.
[0019] According to the structural schematic drawing of the executing lever 1 of the invention
as illustrated in Fig. 2, a reset driving end 110 corresponding to the elastic piece
111 and the locking end 120 corresponding to the pressing plate 2 are arranged at
two ends of the executing lever 1 respectively. The locking end 120 comprises a first
acting surface 121 and a second acting surface 122 which are of a V-shaped structure
and are connected to each other. The second acting surface 122 is connected with the
end part of the executing lever 1 and parallel to the executing lever 1, and an acting
end 123 formed at the junction of the first acting surface 121 and the second acting
surface 122 can be in contact connection with the locking surface 212. The first acting
surface 121 can be in contact connection with the corresponding side of the sliding
step 213, and therefore a triangular structure can be formed by the locking surface
212, the first acting surface 121 and one side of the sliding step 213 in case of
locking. By means of the locking end having a V-shaped structure, when the executing
lever locks the pressing plate, the stable triangular structure is formed by the locking
end, the locking surface and the sliding step, such that the locked pressing plate
is unlikely to shake, and therefore the stability of the locking device is improved.
In particular, a circular arc surface 213a which facilitates the locking end 120 to
slide to the locking surface 212 from the unlocking surface 211 can be arranged at
the top of the sliding step 213. The first acting surface 121 having the V-shaped
structure obliquely acts on and contacts with the sliding step 131, and therefore,
the first acting surface 121 can be in contact connection with the circular arc surface
213a stably, without sliding, and therefore the stability of locking connection is
ensured. The reset driving end 110 can drive the elastic piece 111 to store energy
when the device is reset, and therefore the locking end 120 slides from the locking
end 212 back to the unlocking surface 211. It is easily conceivable that the locking
device is at a locking state after the circuit breaker has a fault, and under this
case, the elastic piece 111 is at an energy-releasing state to provide an acting force
under which the locking end 120 is in contact locking with the locking surface 212.
When the locking device is reset after the fault is removed, the reset driving end
110 is pushed down in a manual manner, and under this case, the locking end 120 is
moved to the unlocking surface 211, and the elastic piece 111 is at the energy-releasing
state again.
[0020] A fulcrum mounting hole 130 which is used for being rotatably connected with a hole
shaft on the side wall of the base 3 is also arranged in the middle of the executing
lever 1, and a shaft pin 131 can be mounted inside the fulcrum mounting hole. The
executing lever is stably and rotatably mounted to the side wall of the base, such
that the stability of the locking end of the executing lever when the locking end
is driven by the reset driving end is ensured, and the reliability of the executing
lever in an oscillating action is improved. In particular, the elastic piece 111 can
be a spring arranged between the end part of the executing lever 1 and the base 3,
and a cone frustum 112 for limiting and fixing the spring is arranged at the bottom
of one end of the executing lever 1. The spring is simple in structure and convenient
to mount, such that the installation efficiency of the locking device is improved,
and meanwhile the stability of the device during locking and resetting is ensured.
[0021] According to the structural schematic drawing of the pressing plate 2 of the invention
as illustrated in Fig. 3, the pressing plate 2 is mounted on a support 4 in the base
3; a locking portion 210 and a contact portion 220 are formed by extending respectively
from two sides of the pressing plate 2; a driving portion 240 corresponding to the
magnetic actuator 5 is arranged in the middle of the pressing plate 2; a rotary mounting
portion 230 also extends out from the driving portion 240; a mounting cone frustum
231 which can be rotatably connected with a hole shaft of the support 4 is arranged
at each of two sides, corresponding to the pressing plate 2, of the rotary mounting
portion 230; the magnetic actuator 5 can push the driving portion 240 when the circuit
breaker has a fault, such that the pressing plate 2 can oscillate downwards along
the mounting cone frustums 231 relative to the support 4. The pressing plate is simple
in structural design and is mounted in the support of the base, so that the reliability
of the pressing plate during rotatable oscillating is ensured. In particular, the
locking portion 210 comprises an unlocking surface 211 and a locking surface 212 which
are adjacent to each other, and a sliding step 213 is arranged between the unlocking
surface 211 and the locking surface 212. In particular, a circular arc surface 213a
which is in sliding contact with the bottom of the locking end 120 is arranged at
the top of the sliding step 213. By means of the circular arc surface, the process
of the locking end sliding to the locking surface from the unlocking surface is more
easy and fluent to ensure that the action of the executing lever that locks the pressing
plate cannot lose efficiency and improve the reliability of the device. In addition,
a baffle 214 corresponding to one side wall of the pressing plate 2 is also arranged
on the locking portion 210, and a connecting baffle 215 is arranged between the end
part, corresponding to the locking surface 212, of the baffle 214 and the side wall
of the pressing plate 2. A groove structure 216 corresponding to the locking end 120
is formed jointly by the connecting baffle 215, the baffle 214, one side wall of the
pressing plate 2 and one side wall of the sliding step 213. The baffle can be used
for positioning the locking end to prevent the locking end from losing efficiency
in a locking process and improve the stability of the locking device. Meanwhile, a
groove structure having an enclosed structure is formed around the locking surface
to improve the locking reliability. Moreover, the contact portion 220 is of an L-shaped
structure and comprises a horizontal baffle 221 and a vertical baffle 222 which are
perpendicularly connected to each other. The vertical baffle 222 is perpendicularly
arranged on one side wall of the pressing plate 2, and the horizontal baffle 221 is
parallel to the side surface of the pressing plate 2; the horizontal baffle 221 can
oscillate with the rotation of the pressing plate 2, thereby preventing the switching-off
semi-shaft of the operating mechanism from resetting to a highest position, i.e.,
a switchable-on position. The L-shaped contact portion is simple in structure and
convenient to machine and mount, and the horizontal baffle can effectively prevent
the operating mechanism from resetting, such that the working performance of the locking
device is improved.
[0022] According to the front structural schematic drawing of an initial state of the invention
as illustrated in Fig. 4, the executing lever 1 is mounted at one side of the base
3 via the shaft pin 131, and the locking end 120 of the executing lever 1 is in contact
connection with the locking portion 210 of the pressing plate 2 mounted on the support
4. The initial state refers to that the pressing plate 2 is in a horizontal position
when the locking device does not trigger locking in case that the circuit breaker
has no fault, and therefore the contact portion 220 cannot prevent the switching-off
semi-shaft of the operating mechanism from being switched on normally. According to
the partial structural cross-sectional view along an A-A direction inside an imagery
line as illustrated in Fig. 4, the elastic piece 111 at the reset driving end 110
of the executing lever 1 is at an energy-storage state under the initiate state, the
locking end 120 at the other end of the executing lever 1 is placed in the unlocking
surface 211, and the second acting surface 122 of the locking end 120 leans against
one side wall of the unlocking surface 211 corresponding to the sliding step 213.
[0023] According to the front structural schematic drawing of a locking state as illustrated
in Fig. 6, a reset spring 232 which can drive the pressing plate 2 back to an initial
position is mounted on the mounting cone frustums 231, and two ends of the reset spring
232 are linked to the pressing plate 2 and the support 4 respectively. When the locking
end returns the unlocking surface from the locking surface, the pressing plate can
drive the contact portion to return to an initial position under the resetting action
force of the reset spring, such that the switching-off semi-shaft of the operating
mechanism can be reset to a highest position, i.e., a switchable-on position, so as
to ensure that the reset pressing plate can return to the accurate initial position
and improve the working accuracy of the device. Under the locking state, i.e., the
locking device triggers locking when the circuit breaker has a fault, the magnetic
actuator 5 pushes the pressing plate 2 to overcome a resetting force of the reset
spring 232 to oscillate and rotate clockwise relative to the support 4, and the locking
end 120 of the executing lever 1 can lock the locking portion 210, and further the
contact portion 220 oscillates clockwise with the pressing plate 2 to prevent the
switching-off semi-shaft of the operating mechanism from returning to the highest
position, i.e., the switchable-on position. According to the partial structural cross-sectional
view along a B-B direction inside an imagery line of Fig. 6 as illustrated in Fig.
7, the sliding step 213 oscillates with the pressing plate 2 in a locking process,
such that the second acting surface 122 loses its support, and therefore the locking
end 120 slides downwards into the locking surface 212 to finish locking under the
energy-releasing acting force of the elastic piece 111. The acting end 123 is in contact
with the locking surface 212 under the locking state, and meanwhile a triangular structure
can be formed by the locking surface 212, the first acting surface 121 and the sliding
step 213. In particular, a slope 213b which can be matched with and in contact connection
with the first acting surface 121 is arranged at one side, corresponding to the first
acting surface 121, of the sliding step 213, and an obtuse angle is formed between
the slope 213 and the locking surface 212. By means of the slope arranged at one side
of the sliding step, an acting contact area of the first acting surface and the sliding
step increases to prevent the contact surfaces from sliding and falling, and ensure
that the pressing plate can be effectively locked. By means of the locking end having
a V-shaped structure, the first acting surface 121 is in obliquely contact with the
sliding step, and the contact stability can be effectively ensured due to the arrangement
of the slope 213b. If the first acting surface 121 is not in obliquely contact with
the sliding step, the slope 213b instead makes the locking end fall off easily. After
removing a fault of the circuit breaker and unlocking the locking device after confirming
that there is no fault, the user can push the reset driving end 110 manually, such
that the elastic piece 111 can store energy again, and meanwhile the locking end 120
moves away from the locking surface 212. The pressing plate 2 returns to the initial
position under the resetting force of the reset spring 232 after losing the locking
of the locking end 120, and at this moment, the locking end 120 is placed inside the
unlocking surface 211 again and is reset.
1. A circuit breaker with a locking device, wherein the locking device comprises an executing
lever (1) and a pressing plate (2), wherein a hole shaft of the executing lever (1)
is rotatably mounted in a base (3) of a circuit breaker; an elastic piece (111) is
arranged between one end of the executing lever (1) and the base (3), and the other
end of the executing lever (1) is provided with a locking end (120) which can be connected
with a locking portion (210) at one side of the pressing plate (2) in a locking manner;
the pressing plate (2) is mounted in the base (3) and can rotatably oscillate relative
to the base (3); the locking portion (210) at one side of the pressing plate (2) comprises
an unlocking surface (211) and a locking surface (212) which correspond to the locking
end (120) respectively and are adjacent to each other, and a sliding step (213) is
arranged between the unlocking surface (211) and the locking surface (212); a contact
portion (220) which is in contact connection with a circuit breaker operating mechanism
is arranged at the other side of the pressing plate (2); a magnetic actuator (5) which
can drive the pressing plate (2) to oscillate is also arranged above the pressing
plate (2) correspondingly; characterized in that the magnetic actuator (5) pushes the pressing plate (2) to oscillate when the circuit
breaker has a fault, such that the locking end (120) arranged inside the unlocking
surface (211) slides into the locking surface (212) along the sliding step (213) under
the energy-releasing acting force of the elastic piece (111) so as to lock the pressing
plate (2); meanwhile, the contact portion (220) capable of oscillating with the pressing
plate (2) limits the operating mechanism to prevent the operating mechanism from resetting;
the locking end (120) comprises a first acting surface (121) and a second acting surface
(122) which are of a V-shaped structure and are connected to each other; the second
acting surface (122) is connected with the end part of the executing lever (1) and
parallel to the executing lever (1), and an acting end (123) formed at the junction
of the first acting surface (121) and the second acting surface (122) can be in contact
connection with the locking surface (212); the first acting surface (121) can be in
obliquely contact connection with the corresponding side of the sliding step (213),
and therefore a triangular structure is formed by the locking surface (212), the first
acting surface (121) and one side of the sliding step (213) in case of locking.
2. The circuit breaker with the locking device according to claim 1, characterized in that a slope (213b) which can be matched with and in contact connection with the first
acting surface (121) is arranged at one side, corresponding to the first acting surface
(121), of the sliding step (213), and an obtuse angle is formed between the slope
(213b) and the locking surface (212).
3. The circuit breaker with the locking device according to claim 1, characterized in that a circular arc surface (213a) which can be in sliding contact with the bottom of
the locking end (120) is arranged at the top of the sliding step (213).
4. The circuit breaker with the locking device according to claim 1, characterized in that the pressing plate (2) is mounted on a support (4) in the base (3); the locking portion
(210) and a contact portion (220) are formed by extending respectively from two sides
of the pressing plate (2); a driving portion (240) corresponding to the magnetic actuator
(5) is arranged in the middle of the pressing plate (2); a rotary mounting portion
(230) also extends out from the driving portion (240); a mounting cone frustum (231)
which can be rotatably connected with a hole shaft of the support (4) is arranged
at each of two sides, corresponding to the pressing plate (2), of the rotary mounting
portion (230); the magnetic actuator (5) can push the driving portion (240) when the
circuit breaker has a fault, such that the pressing plate (2) can oscillate downwards
along the mounting cone frustums (231) relative to the support (4).
5. The circuit breaker with the locking device according to claim 4, characterized in that a reset spring (232) which can drive the pressing plate (2) back to an initial position
is mounted on the mounting cone frustums (231), and two ends of the reset spring (232)
are linked to the pressing plate (2) and the support (4) respectively.
6. The circuit breaker with the locking device according to claim 1, characterized in that a reset driving end (110) corresponding to the elastic piece (111) and the locking
end (120) corresponding to the pressing plate (2) are arranged at two ends of the
executing lever (1) respectively, and the reset driving end (110) can drive the elastic
piece (111) to store energy when the device is reset, such that the locking end (120)
slides back to the unlocking surface (211) from the locking surface (212); a fulcrum
mounting hole (130) which is used for being rotatably connected with a hole shaft
on the side wall of the base (3) is also formed in the middle of the executing lever
(1); a shaft pin (131) can be mounted inside the fulcrum mounting hole.
7. The circuit breaker with the locking device according to claim 1, characterized in that the elastic piece (111) can be a spring arranged between the end part of the executing
lever (1) and the base (3), and a cone frustum (112) for limiting and fixing the spring
is arranged at the bottom of one end of the executing lever (1).
8. The circuit breaker with the locking device according to claim 1, characterized in that the contact portion (220) is of an L-shaped structure and comprises a horizontal
baffle (221) and a vertical baffle (222) which are perpendicularly connected to each
other; the vertical baffle (222) is perpendicularly arranged on one side wall of the
pressing plate (2), and the horizontal baffle (221) is parallel to the side surface
of the pressing plate (2); the horizontal baffle (221) can oscillate with the rotation
of the pressing plate (2), thereby preventing a switching-off semi-shaft of the operating
mechanism from resetting to a switchable-on position.
9. The circuit breaker with the locking device according to claim 1, characterized in that a baffle (214) corresponding to one side wall of the pressing plate (2) is also arranged
on the locking portion (210), and a connecting baffle (215) is arranged between the
end part, corresponding to the locking surface (212), of the baffle (214) and the
side wall of the pressing plate (2); a groove structure (216) corresponding to the
locking end (120) is formed jointly by the connecting baffle (215), the baffle (214),
one side wall of the pressing plate (2) and one side wall of the sliding step (214).
1. Stromkreisunterbrecher mit einer Verriegelungsvorrichtung, wobei die Verriegelungsvorrichtung
aufweist einen Ausführungshebel (1) und eine Drückplatte (2), wobei ein Lochschaft
des Ausführungshebels (1) in einer Basis (3) eines Stromkreisunterbrechers drehbar
montiert ist, wobei ein Elastikteil (111) zwischen einem Ende des Ausführungshebels
(1) und der Basis (3) angeordnet ist, und das andere Ende des Ausführungshebels (1)
mit einem Verriegelungsende (120) versehen ist, welches mit einem Verriegelungsabschnitt
(210) auf einer Seite der Drückplatte (2) in einer verriegelnden Weise verbunden werden
kann,
wobei die Drückplatte (2) in der Basis (3) montiert ist und relativ zu der Basis (3)
drehoszillieren kann, wobei der Verriegelungsabschnitt (210) auf einer Seite der Drückplatte
(2) eine Entriegelungsfläche (211) und eine Verriegelungsfläche (212) aufweist, die
jeweils zu dem Verriegelungsende (120) korrespondieren und zueinander benachbart sind,
und wobei eine Gleitstufe (213) zwischen der Entriegelungsfläche (211) und der Verriegelungsfläche
(212) angeordnet ist, wobei ein Kontaktabschnitt (220), welcher in Kontaktverbindung
mit einem Stromkreisunterbrecher-Betätigungsmechanismus ist, auf der anderen Seite
der Drückplatte (2) angeordnet ist, wobei ferner ein magnetischer Aktuator (5), welcher
die Drückplatte (2) antreiben kann, um zu oszillieren, korrespondierend über der Drückplatte
(2) angeordnet ist, dadurch gekennzeichnet, dass der magnetische Aktuator (5) die Drückplatte (2) drückt, um zu oszillieren, wenn
der Stromkreisunterbrecher einen Fehler hat, sodass das Verriegelungsende (120), das
in der Entriegelungsfläche (211) angeordnet ist, entlang der Gleitstufe (213) in die
Verriegelungsfläche (212) gleitet unter der Energie-freigebenden Wirkkraft des Elastikteils
(111), um die Drückplatte (2) zu verriegeln, wobei ferner der Kontaktabschnitt (220),
der imstande ist, mit der Drückplatte (2) zu oszillieren, den Betätigungsmechanismus
begrenzt, um den Betätigungsmechanismus an einer Rückstellung zu hindern,
wobei das Verriegelungsende (120) aufweist eine erste Wirkfläche (121) und eine zweite
Wirkfläche (122), die von einer V-förmigen Struktur sind und miteinander verbunden
sind, wobei die zweite Wirkfläche (122) mit dem Endabschnitt des Ausführungshebels
(1) verbunden und parallel zu dem Ausführungshebel (1) ist, und wobei ein Wirkende
(123), das an der Schnittstelle der ersten Wirkfläche (121) und der zweiten Wirkfläche
(122) ausgebildet ist, in Kontaktverbindung mit der Verriegelungsfläche (212) sein
kann, wobei die erste Wirkfläche (121) in Schräg-Kontaktverbindung mit der korrespondierenden
Seite der Gleitstufe (213) sein kann, und daher ist im Verriegelungsfalle eine Dreiecksstruktur
von der Verriegelungsfläche (212), der ersten Wirkfläche (121) und einer Seite der
Gleitstufe (213) gebildet.
2. Stromkreisunterbrecher mit einer Verriegelungsvorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass eine Schräge (213b), die mit der ersten Wirkfläche (121) zusammengepasst und in Kontaktverbindung
sein kann, auf einer zu der ersten Wirkfläche (121) korrespondierenden Seite der Gleitstufe
(213) angeordnet ist, und ein stumpfer Winkel ist zwischen der Schräge (213b) und
der Verriegelungsfläche (212) ausgebildet.
3. Stromkreisunterbrecher mit der Verriegelungsvorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass eine Kreisbogenfläche (213a), welche in einem Gleitkontakt mit der Unterseite des
Verriegelungsendes (120) sein kann, auf der Oberseite der Gleitstufe (213) angeordnet
ist.
4. Stromkreisunterbrecher mit der Verriegelungsvorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass die Drückplatte (2) an einem Halter (4) in der Basis (3) montiert ist, wobei der
Verriegelungsabschnitt (210) und ein Kontaktabschnitt (220) gebildet sind durch jeweiliges
Verlängern von zwei Seiten der Drückplatte (2), wobei ein Antriebsabschnitt (240),
der zu dem magnetischen Aktuator (5) korrespondiert, in der Mitte der Drückplatte
(2) angeordnet ist, wobei ferner ein Drehmontageabschnitt (230) sich von dem Antriebsabschnitt
(240) aus erstreckt, wobei ein Montagekegelstumpf (231), welcher mit einem Lochschaft
des Halters (4) drehverbunden sein kann, auf jeder von zwei zu der Drückplatte (2)
korrespondierenden Seiten des Drehmontageabschnitts (230) angeordnet ist, wobei der
magnetische Aktuator (5) den Antriebsabschnitt (240) drücken kann, wenn der Stromkreisunterbrecher
einen Fehler hat, sodass die Drückplatte (2) entlang der Montagekegelstümpfe (231)
relativ zu dem Halter (4) nach unten oszillieren kann.
5. Stromkreisunterbrecher mit der Verriegelungsvorrichtung gemäß Anspruch 4, dadurch gekennzeichnet, dass eine Rückstellfeder (232), welche die Drückplatte (2) zurück in eine Anfangsposition
antreiben kann, an den Montagekegelstümpfen (231) montiert ist, wobei zwei Enden der
Rückstellfeder (232) zugeordnet mit der Drückplatte (2) und dem Halter (4) verbunden
sind.
6. Stromkreisunterbrecher mit der Verriegelungsvorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass ein Rückstellantriebsende (110), das zu dem Elastikteil (111) korrespondiert, und
das Verriegelungsende (120), das zu der Drückplatte (2) korrespondiert, zugeordnet
an zwei Enden des Ausführungshebels (1) angeordnet sind, wobei das Rückstellantriebsende
(110) das Elastikteil (111) antreiben kann, um Energie zu speichern, wenn die Vorrichtung
rückgestellt wird, sodass das Verriegelungsende (120) von der Verriegelungsfläche
(212) aus zu der Entriegelungsfläche (211) zurückgleitet, wobei ferner ein Gelenkmontageloch
(130), welches verwendet wird, um mit einem Lochschaft an der Seitenwand der Basis
(3) drehverbunden zu sein, in der Mitte des Ausführungshebels (1) ausgebildet ist,
wobei ein Schaftstift (131) im Inneren des Gelenkmontagelochs montiert sein kann.
7. Stromkreisunterbrecher mit der Verriegelungsvorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass das Elastikteil (111) eine Feder sein kann, die zwischen dem Endabschnitt des Ausführungshebels
(1) und der Basis (3) angeordnet ist, wobei ein Kegelstumpf (112) zum Begrenzen und
Fixieren der Feder auf der Unterseite von einem Ende des Ausführungshebels (1) angeordnet
ist.
8. Stromkreisunterbrecher mit der Verriegelungsvorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass der Kontaktabschnitt (220) von einer L-förmigen Struktur ist und eine horizontale
Wand (221) und eine vertikale Wand (222) aufweist, die senkrecht miteinander verbunden
sind, wobei die vertikale Wand (222) senkrecht an einer Seitenwand der Drückplatte
(2) angeordnet ist und die horizontale Wand (221) parallel zu der Seitenfläche der
Drückplatte (2) ist, wobei die horizontale Wand (221) mit der Rotation der Drückplatte
(2) oszillieren kann, dadurch einen Ausschalt-Halbschaft des Betätigungsmechanismus
an einer Rückstellung in eine Einschalt-Position hindernd.
9. Stromkreisunterbrecher mit der Verriegelungsvorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass ferner eine Wand (214), die zu einer Seitenwand der Drückplatte (2) korrespondiert,
an dem Verriegelungsabschnitt (210) angeordnet ist und eine Verbindungswand (215)
zwischen dem zu der Verriegelungsfläche (212) korrespondierenden Endabschnitt der
Wand (214) und der Seitenwand der Drückplatte (2) angeordnet ist, wobei eine Nutstruktur
(216), die zu dem Verriegelungsende (120) korrespondiert, gemeinsam von der Verbindungswand
(215), der Wand (214), einer Seitenwand der Drückplatte (2) und einer Seitenwand der
Gleitstufe (214) ausgebildet ist.
1. Disjoncteur muni d'un dispositif de verrouillage, dans lequel le dispositif de verrouillage
comprend un levier d'exécution (1) et une plaque de pression (2), dans lequel un arbre
de trou du levier d'exécution (1) est monté de manière rotative dans une base (3)
d'un disjoncteur ; une pièce élastique (111) est agencée entre une extrémité du levier
d'exécution (1) et la base (3), et l'autre extrémité du levier d'exécution (1) est
pourvue d'une extrémité de verrouillage (120) qui peut être reliée à une partie de
verrouillage (210) au niveau d'un premier côté de la plaque de pression (2) d'une
manière verrouillable ;
la plaque de pression (2) est montée dans la base (3) et peut osciller en rotation
par rapport à la base (3) ; la partie de verrouillage (210) au niveau d'un premier
côté de la plaque de pression (2) comprend une surface de déverrouillage (211) et
une surface de verrouillage (212) correspondant respectivement à l'extrémité de verrouillage
(120) et adjacentes l'une à l'autre, et un gradin de coulissement l'étape (213) est
agencé entre la surface de déverrouillage (211) et la surface de verrouillage (212)
; une partie de contact (220) qui est en connexion de contact avec un mécanisme d'actionnement
de disjoncteur est agencé au niveau de l'autre côté de la plaque de pression (2) ;
un actionneur magnétique (5) qui peut entraîner la plaque de pression (2) à osciller
est également agencé au-dessus de la plaque de pression (2) de manière correspondante
; caractérisé en ce que
l'actionneur magnétique (5) pousse la plaque de pression (2) à osciller lorsque le
disjoncteur présente un défaut, de telle sorte que l'extrémité de verrouillage (120)
agencée à l'intérieur de la surface de déverrouillage (211) coulisse jusque dans la
surface de verrouillage (212) le long du gradin de coulissement (213) sous la force
d'action de libération d'énergie de la pièce élastique (111) de manière à verrouiller
la plaque de pression (2) ; dans le même temps, la partie de contact (220) capable
d'osciller avec la plaque de pression (2) limite le mécanisme d'actionnement pour
empêcher le mécanisme d'actionnement de se réinitialiser ;
l'extrémité de verrouillage (120) comprend une première surface active (121) et une
seconde surface active (122) qui ont une structure en forme de V et sont connectées
l'une à l'autre ; la seconde surface active (122) est connectée à la partie d'extrémité
du levier d'exécution (1) et parallèle au levier d'exécution (1), et une extrémité
active (123) formée à la jonction de la première surface active (121) et de la seconde
surface active (122) peut être en contact avec la surface de verrouillage (212) ;
la première surface active (121) peut être en connexion de contact de manière oblique
avec le côté correspondant du gradin coulissant (213), et par conséquent une structure
triangulaire est formée par la surface de verrouillage (212), la première surface
active (121) et un côté du gradin de coulissement (213) en cas de verrouillage.
2. Disjoncteur muni d'un dispositif de verrouillage selon la revendication 1, caractérisé en ce qu'une pente (213b) qui peut être appariée et en contact avec la première surface active
(121) est agencée au niveau d'un premier côté, correspondant à la première surface
active (121), du gradin de coulissement (213), et un angle obtus est formé entre la
pente (213b) et la surface de verrouillage (212).
3. Disjoncteur muni d'un dispositif de verrouillage selon la revendication 1, caractérisé en ce qu'une surface en arc de cercle (213a) qui peut être en contact coulissant avec le bas
de l'extrémité de verrouillage (120) est agencée en haut du gradin de coulissement
(213).
4. Disjoncteur muni d'un dispositif de verrouillage selon la revendication 1, caractérisé en ce que la plaque de pression (2) est montée sur un support (4) dans la base (3) ; la partie
de verrouillage (210) et une partie de contact (220) sont formées en s'étendant respectivement
à partir de deux côtés de la plaque de pression (2) ; une partie d'entraînement (240)
correspondant à l'actionneur magnétique (5) est agencée au milieu de la plaque de
pression (2) ; une partie de montage rotative (230) s'étend également vers l'extérieur
à partir de la partie d'entraînement (240) ; un tronc de cône de montage (231) qui
peut être connecté de manière rotative avec un arbre de trou du support (4) est agencé
au niveau de chacun de deux côtés, correspondant à la plaque de pression (2), de la
partie de montage rotative (230) ; l'actionneur magnétique (5) peut pousser la partie
d'entraînement (240) lorsque le disjoncteur a un défaut, de telle sorte que la plaque
de pression (2) peut osciller vers le bas le long des troncs de cône de montage (231)
par rapport au support (4).
5. Disjoncteur muni d'un dispositif de verrouillage selon la revendication 4, caractérisé en ce qu'un ressort de réinitialisation (232) qui peut ramener la plaque de pression (2) dans
une position initiale est monté sur les troncs de cône de montage (231), et deux extrémités
du ressort de réinitialisation (232) sont reliées à la plaque de pression (2) et au
support (4), respectivement.
6. Disjoncteur muni d'un dispositif de verrouillage selon la revendication 1, caractérisé en ce qu'une extrémité d'entraînement de réinitialisation (110) correspondant à la pièce élastique
(111) et l'extrémité de verrouillage (120) correspondant à la plaque de pression (2)
sont agencées au niveau de deux extrémités du levier d'exécution (1) respectivement,
et l'extrémité d'entraînement de réinitialisation (110) peut entraîner la pièce élastique
(111) pour stocker de l'énergie lorsque le dispositif est réinitialisé, de telle sorte
que l'extrémité de verrouillage (120) glisse en retour vers la surface de déverrouillage
(211) à partir de la surface de verrouillage (212) ; un trou de montage de point d'appui
(130) qui est utilisé pour être connecté de manière rotative avec un arbre de trou
sur la paroi latérale de la base (3) est également formé au milieu du levier d'exécution
(1) ; une tige d'arbre (131) peut être montée à l'intérieur du trou de montage de
point d'appui.
7. Disjoncteur muni d'un dispositif de verrouillage selon la revendication 1, caractérisé en ce que la pièce élastique (111) peut être un ressort agencé entre la partie d'extrémité
du levier d'exécution (1) et la base (3), et un tronc de cône (112) pour limiter et
fixer le ressort est agencé au niveau du bas d'une extrémité du levier d'exécution
(1).
8. Disjoncteur muni d'un dispositif de verrouillage selon la revendication 1, caractérisé en ce que la partie de contact (220) a une structure en L et comprend un déflecteur horizontal
(221) et un déflecteur vertical (222) qui sont connectés perpendiculairement l'un
à l'autre ; le déflecteur vertical (222) est agencé perpendiculairement sur une première
paroi latérale de la plaque de pression (2), et le déflecteur horizontal (221) est
parallèle à la surface latérale de la plaque de pression (2) ; le déflecteur horizontal
(221) peut osciller avec la rotation de la plaque de pression (2), en empêchant ainsi
un demi-arbre de coupure du mécanisme d'actionnement de revenir à une position commutable.
9. Disjoncteur muni d'un dispositif de verrouillage selon la revendication 1, caractérisé en ce qu'un déflecteur (214) correspondant à une paroi latérale de la plaque de pression (2)
est également disposée sur la partie de verrouillage (210), et un déflecteur de connexion
(215) est agencé entre la partie d'extrémité, correspondant à la surface de verrouillage
(212), du déflecteur (214) et la paroi latérale de la plaque de pression (2) ; une
structure de rainure (216) correspondant à l'extrémité de verrouillage (120) est formée
conjointement par le déflecteur de connexion (215), le déflecteur (214), une paroi
latérale de la plaque de pression (2) et une paroi latérale du gradin de coulissement
(214).
REFERENCES CITED IN THE DESCRIPTION
This list of references cited by the applicant is for the reader's convenience only.
It does not form part of the European patent document. Even though great care has
been taken in compiling the references, errors or omissions cannot be excluded and
the EPO disclaims all liability in this regard.
Patent documents cited in the description