Technical Field
[0001] The present invention relates to a door lock drive assembly, and more particularly
to a door lock drive assembly, in which inner and outer door handle shafts are selectively
bound according to an authentication signal or a key action, and a tight binding force
can be maintained even when a strong torque is transmitted to the handle shafts.
Background Art
[0002] A door is installed with a mechanical or electronic door lock in order to keep the
safety of a residential space or the security of a working space against an illegal
entry of a third party. Recently, an anti-panic type door lock has been frequently
used, of which the latch is operated in cooperation with an inner door handle so as
to allow a resident to quickly escape to the outside from a disaster, such as a fire,
occurring indoors or a dangerous situation, such as a break-in.
[0003] A conventional electronic door lock (including an anti-panic type door lock) is typically
configured such that the latch of the door lock is operated using a motor. That is,
the conventional electronic door lock includes a plurality of gears and link members
therein for interconnecting the motor and the latch, and the torque of the motor is
transmitted to the latch through the gears and the link members to perform a locking
action and an unlocking action by the latch.
[0004] However, when the latch is jammed in the door frame or the engagement between the
gears is mismatched, the conventional structure as described above may cause a situation
in which the latch is not smoothly operated by the motor, thereby making it difficult
to open the door from the outside to enter indoors.
[0005] For example, when the door becomes askew a little due to its weight or the position
of the latch is somewhat changed as an impact is applied to the door, the door lock
may not be smoothly operated unless the torque of the motor is sufficient to forcibly
operate the latch.
[0006] In addition, the conventional structure requires a plurality of decelerating gears
and link members to convert the torque of the motor into the rectilinear reciprocating
movement of the latch, which makes the construction of the door lock complicated,
and hinders the miniaturization of the door lock.
[0007] Meanwhile, recently, an anti-panic type door lock has been frequently used as briefly
described above. Because such an anti-panic type door lock is configured such that
the latch is operated by the rotation of the inner door handle, the latch can be operated
relatively easily even when the latch is jammed in the door frame if the outer and
inner door handle shafts are capable of being tightly bound selectively depending
on an authentication signal or a key action.
[0008] Therefore, what is required is to develop a door lock drive assembly which can selectively
bind the inner and outer door handle shafts depending on an authentication signal
or a key action.
Detailed Description of the Invention
Technical Problem
[0009] The present invention was made in an effort to solve the above-mentioned problems,
and an aspect of the present invention is to provide a door lock drive assembly which
can selectively bind the inner and outer door handle shafts depending on an authentication
signal or a key action, and maintain a strong binding force even when a strong torque
is transmitted to the handle shafts.
Technical Solution
[0010] In order to solve the technical problem, in accordance with an aspect of the present
invention, there is provided a door lock drive assembly including: a shaft connection
unit that is provided with a pushing member configured to selectively connect a first
handle shaft and a second handle shaft in such a manner that the first handle shaft
and the second handle shaft are connected with or disconnected from each other; a
slide unit that is provided with a pressing unit which is vertically movable to press
the pushing member; and a mechanical driving unit that is formed with a keyway and
vertically moves the pressing unit of the slide unit when a key is inserted into the
keyway and rotated.
[0011] The door lock drive assembly may further include a pushing member, wherein the pushing
member is provided with a rotary axle hinged to the first handle shaft, and with reference
to the rotary axle, one end of the pushing member is elastically supported on the
outer peripheral surface of the first handle shaft, and the other end is positioned
in the inside of the slide unit.
[0012] The slide unit may be formed with an inclined groove, and the other end of the pushing
member is positioned in the inclined groove.
[0013] The slide unit may include: a slide body; a slide member installed in the sliding
body to be capable of being reciprocated to press the pushing member, which is configured
to connect and disconnect the handle shafts, to a side; a driving motor installed
in the inside of the slide body; a guide coil disposed in the reciprocating direction
of the slide member, a side surface of the slide member being fixed to the guide coil;
and a guide member comprising a guide plate which is rotated by the driving motor
and formed with a protrusion step on the outer peripheral surface thereof to be moved
along the guide coil, and a shaft slider configured to control the guide plate to
be contacted with or separated from the guide coil.
[0014] The guide plate may be configured such that the protrusion step is contacted with
the guide coil in the state in which the guide plate is elastically supported in the
guide coil.
[0015] Preferably, an inclined part may be formed at a tail end where the guide plate and
the shaft slider are contacted with each other, so that when the shaft slider pushes
the guide plate, the protrusion step in a pressed state is released from the guide
coil.
[0016] The other end of the slide member may be formed with a protrusion plate configured
to be interlocked with a manual driving shaft provided in the door lock.
[0017] The mechanical driving unit may include: a driving unit body; a first cam that is
rotatably installed in the driving unit body, and configured to push a tail end of
the slide unit to a side by being interlocked with a keyway shaft to be rotated; and
a second cam that is coaxially connected with the first cam, and positioned in front
of the first cam, the second cam being formed with a recess for fixing a position.
[0018] The pressing unit protrusively formed on the slide unit may be retained in a close
contact state in the recess to fix the position of the second cam.
[0019] The first cam may be formed in such a manner that its outer peripheral, which is
in contact with the slide unit, forms an oval shape.
[0020] The driving unit body may be provided with a cover unit for protecting the first
cam.
[0021] The pushing member may include: a pin inserted into the insertion hole of the handle
shaft, and a guide part fixed to the leading end of the pin, and coupled with the
leading end of the pressing unit.
[0022] The leading end of the pressing unit is formed with a fixing groove, into which the
guide part is inserted.
[0023] The guide part may be formed in a circular arc shape.
[0024] The pin may be fitted with a spring to elastically support the pushing member.
[0025] The pin and the guide part may be formed integrally with each other.
Advantageous Effects
[0026] In accordance with the present invention, when a door lock drive assembly presses
a pushing member according to an authentication signal, the slide member connects
inner and outer door handle shafts with each other. As a result, inner and outer door
handle shafts can be selectively connected with each other, thereby improving the
convenience in use.
[0027] In addition, when a door lock is electronically inactivated, for example, due to
a power outage or an emergency situation, the inventive door lock drive assembly allows
a user to connect or disconnect the handle shafts using a key, thereby improving the
convenience in use.
Brief Description of the Drawings
[0028]
FIG. 1 is a schematic view illustrating a construction of a door lock drive assembly
according to a first exemplary embodiment of the present invention;
FIG. 2 is a cross-sectional view illustrating a shaft connection unit of the door
lock drive assembly according to the first exemplary embodiment;
FIG. 3 is a perspective view illustrating a pushing member of the shaft connection
unit of the door lock drive assembly according to the first exemplary embodiment;
FIG. 4 is a cross-sectional view illustrating the disconnected state of the shaft
connection unit of the door lock drive assembly according to the first exemplary embodiment;
FIG. 5 is a cross-sectional view illustrating the connected state of the shaft connection
unit of the door lock drive assembly according to the first exemplary embodiment;
FIG. 6 is a perspective view illustrating a slide unit of the door lock drive assembly
according to the first exemplary embodiment;
FIG. 7 is a perspective view illustrating the internal construction of the slide unit
of the door lock drive assembly according to the first exemplary embodiment;
FIG. 8 is a front view illustrating the internal construction of the slide unit of
the door lock drive assembly according to the first exemplary embodiment;
FIG. 9 is a side view illustrating the internal construction of the slide unit of
the door lock drive assembly according to the first exemplary embodiment;
FIG. 10 is an exploded perspective view illustrating the internal construction of
the slide unit of the door lock drive assembly according to the first exemplary embodiment;
FIG. 11 is a perspective view illustrating a mechanical driving unit of the door lock
drive assembly according to the first exemplary embodiment;
FIG. 12 is an exploded perspective view illustrating the mechanical driving unit of
the door lock drive assembly according to the first exemplary embodiment;
FIG. 13 is a front view illustrating the mechanical driving unit of the door lock
drive assembly according to the first exemplary embodiment;
FIG. 14 is a perspective view illustrating the internal construction of the mechanical
driving unit of the door lock drive assembly according to the first exemplary embodiment;
FIG. 15 is a front view illustrating the internal construction of the mechanical driving
unit of the door lock drive assembly according to the first exemplary embodiment;
FIG. 16 is a perspective view illustrating a shaft connection unit of a door lock
drive assembly according to a second exemplary embodiment of the present invention;
FIG. 17 is a plan view illustrating the shaft connection unit of the door lock drive
assembly according to the second exemplary embodiment;
FIG. 18 is a partial exploded perspective view illustrating a connective relationship
of a pushing member of the door lock drive assembly according to the second exemplary
embodiment;
FIG. 19 is a partial front view illustrating the operating state of a shaft connection
unit of the door lock drive assembly according to the second exemplary embodiment;
and
FIG. 20 is a partial side view illustrating the operating state of the shaft connection
unit of the door lock drive assembly according to the second exemplary embodiment.
Mode for Carrying Out the Invention
[0029] Now, exemplary embodiments of the present invention will be described with reference
to accompanying illustrative drawings.
[0030] FIG. 1 is a schematic view illustrating a construction of a door lock drive assembly
according to a first exemplary embodiment of the present invention. As illustrated
in FIG. 1, the inventive door lock drive assembly includes a slide unit 100, a shaft
connection unit 200, and a mechanical driving unit 300.
[0031] Each of the components will be described in detail with reference to drawings. FIG.
2 is a cross-sectional view illustrating a shaft connection unit of the door lock
drive assembly according to the first exemplary embodiment, FIG. 3 is a perspective
view illustrating a pushing member of the shaft connection unit of the door lock drive
assembly according to the first exemplary embodiment, FIG. 4 is a cross-sectional
view illustrating the disconnected state of the shaft connection unit of the door
lock drive assembly according to the first exemplary embodiment, and FIG. 5 is a cross-sectional
view illustrating the connected state of the shaft connection unit of the door lock
drive assembly according to the first exemplary embodiment.
[0032] As illustrated in FIGs. 2 to 5, the shaft connection unit 200 generally includes
a first handle shaft 210, a second handle shaft 220, a slide member 240, and a pushing
member 230. The first handle shaft 210 is formed with a main body 212 and a connection
end 211 at an end of the main body 212 to be capable of being connected with an outer
door handle unit (not illustrated).
[0033] The interior of the main body 212 is formed with a space in which the slide member
240 is positioned to be capable of being vertically reciprocated. In addition, a threaded
part is formed at the lower end of the main body 212, and a coupling member 213 is
fastened to the threaded part to accommodate a part of the second handle shaft 220.
[0034] The slide member 240 is formed with an inclined groove 242 (see FIG. 5) on a lateral
side thereof, and a part of the pushing member 230 is positioned in the inclined groove
242.
[0035] Meanwhile, the slide member 240 is formed with a fastening groove 241 on the bottom
side thereof, and a lug 221 formed to extend from an end of the second handle shaft
220 is selectively introduced into or withdrawn from the fastening groove 241. Further,
when the first handle shaft 210 is rotated, the slide member 240 is cooperatively
moved with the first handle shaft 210 in the inside of the first handle shaft 210.
[0036] Therefore, when the slide member 240 is moved in the inside of the first handle shaft
210 and connected with the lug 221 of the second handle shaft(220), the first handle
shaft 210 and the second handle shaft 220 may be interlocked with each other. In addition,
because the tail end 222 of the second handle shaft 220 may be connected with a deadbolt
interlocking body of a mortis, the door lock is opened when the handle shafts are
rotated.
[0037] Meanwhile, the pushing member 230 is provided with a rotary axle 233 which is hinged
to the main body 212 of the first handle shaft 210. In addition, the pushing member
230 is elastically supported on the outer peripheral surface of the main body 212
at one end thereof with reference to the rotary axle 233. Further, the other end of
pushing member 230 is inserted into the inclined groove 242 (see FIG. 5) of the slide
member 240.
[0038] Specifically, with reference to the rotary axle 233, at the one end, the pushing
member 230 is formed with a hooking end 232 positioned in the inclined groove 242,
and at the other end, the pushing member 230 is formed with a pushing end 234, against
which the pressing unit 120 of the slide unit 100 is abutted. The pushing end 234
is formed with extension end portions 236 and 238 which extend to opposite sides,
respectively. In addition, the pushing end 234 is formed with a spring anchoring part
235 on the inner surface thereof.
[0039] Therefore, a spring 231 is installed in such a manner that one end is anchored to
the spring anchoring part 235, and the other end is positioned on the outer surface
of the main body 212 of the first handle shaft 210, thereby elastically supporting
pushing member 230 with reference to the rotary axle 233. That is, because the one
end of pushing member 230 is elastically supported, the hooking end 232 of the pushing
member 230 may come into close contact with the inclined groove 242 of the slide member
240.
[0040] As illustrated in FIGs. 4 and 5, the shaft connection unit 200 may be configured
in such a manner that a separate slide unit 100 may be equipped in a door lock to
be capable of selectively pressing the pushing member 230. Specifically, the slide
unit 100 is installed on an inner frame 110a of the door lock adjacent to the shaft
connection unit 200. When an authentication signal is received by authentication means,
the slide unit 100 drives the pressing unit 120, and the pressing unit 120 presses
the pushing end 234 (see FIG. 3) of the pushing member 230 as illustrated in FIG.
5.
[0041] When the pushing member 230 is pressed in this manner, the pushing member 230 is
pivoted about the rotary axle 233, and the hooking end 232 of the pushing member 230
moves the slide member 240 downward. The slide member 240 moved in this manner makes
the lug 221 of the second handle shaft 220 approach to the fastening groove 241 of
the slide member 240, whereby the first handle shaft 210 and the second handle shaft
220 may be interlocked with each other.
[0042] Meanwhile, when the pressing unit 120 of the slide unit 100 is not driven, the pushing
member 230 is pressed by the spring 231 to move the slide member 240 inwardly, thereby
disconnecting the connection with the second handle shaft 220.
[0043] FIG. 6 is a perspective view illustrating a slide unit of the door lock drive assembly
according to the first exemplary embodiment, FIG. 7 is a perspective view illustrating
the internal construction of the slide unit of the door lock drive assembly according
to the first exemplary embodiment, FIG. 8 is a front view illustrating the internal
construction of the slide unit of the door lock drive assembly according to the first
exemplary embodiment, FIG. 9 is a side view illustrating the internal construction
of the slide unit of the door lock drive assembly according to the first exemplary
embodiment, and FIG. 10 is an exploded perspective view illustrating the internal
construction of the slide unit of the door lock drive assembly according to the first
exemplary embodiment.
[0044] As illustrated in FIGs. 6 to 10, the slide unit 100 generally includes a slide body
110, a pressing unit 120, and a guide member.
[0045] In this construction, the pressing unit 120 is installed in the inside of the slide
body 110 to be capable of being vertically reciprocated. In addition, a slide bar
125 may be formed at an end of the pressing unit 120 to press the pushing member 230,
and the slide bar 125 may be formed with a seating groove 125a, with which the pushing
member 230 may be contacted.
[0046] Meanwhile, the slide body 110 is installed with a driving motor 121, and the driving
motor 121 is provided with a driving gear 121a at the bottom side thereof. The driving
gear 121a is gear-coupled with the interlocking post 122 which is formed with a gear
unit 122a.
[0047] In this construction, a guide member may be configured by a guide coil S1 which is
fitted on the interlocking post 122, and a guide plate 128 and a shaft slider 127
which are provided in the interlocking post 122.
[0048] In this connection, a protrusion step 128a is formed on a side of the guide plate
128 to selectively contact with the guide coil S1, and the guide coil S1 is anchored
to a side of the pressing unit 120 at the opposite ends thereof.
[0049] In addition, a spring S2 is fitted on the shaft slider 127 so that the shaft slider
127 is elastically supported in the interlocking post 122, and the tail end of the
shaft slider 127 is installed to be in close contact with the pressing member 126.
[0050] At the contact ends of the guide plate 128 and the shaft slider 127, an inclined
part 129 is formed, so that when the shaft slider 127 pushes the guide plate 128,
the protrusion step 128a is disengaged from the guide coil S1.
[0051] Meanwhile, the slide body 110 may be configured by combining a first cover body 111
and a second cover body 112.
[0052] The inventive slide unit 100 is installed in a door lock body between the shaft connection
unit 200 and a mechanical driving unit 300.
[0053] Specifically, when the pressing unit 120 of the slide unit 100 pushes the pushing
member 230, the handle shafts (not illustrated) are in the connected state. To the
contrary, when the pressing unit 120 does not push the pushing member 230, the handle
shafts are disconnected.
[0054] Meanwhile, as illustrated in FIG. 11, the mechanical driving unit 300 is provided
with a second cam 310 and a first cam 330 interlocked with the second cam 310, and
the cams 310 and 330 are connected to a keyway shaft. The first cam 330 is a means
for moving the pressing member 126, and the second cam 310 is a means for moving the
protrusion plate (slide bar) of the pressing unit 120.
[0055] When the second cam 310 is rotated, the pressing member 126 is pushed upward. Then,
the pressing member 126 pushes the shaft slider 127 upward, the guide plate 128 is
lowered along the inclined part 129, and the protrusion step 128a of the guide plate
128 is disengaged from the guide coil S1.
[0056] In the state in which the guide plate 128 is disengaged from the guide coil S1, the
pressing unit 120 is freely movable. Especially, when the second cam 320 of the mechanical
driving unit 300 is rotated to push the protrusion plate 123, the pressing unit 120
may be manually pushed. Accordingly, the handle shafts may be manually connected with
each other.
[0057] Meanwhile, when the handle shafts are connected electronically rather than manually,
the torque of the motor 121 rotates the interlocking post 122 through the gear connection.
Then, the protrusion step 128a of the guide plate 128 installed in the interlocking
post 122 is rotated along the guide coil S1 to move the pressing unit 120, to which
the guide coil S1 is connected, and to press the pushing member 230, whereby the shaft
connection unit 200 can connect the handle shafts with each other.
[0058] FIG. 11 is a perspective view illustrating a mechanical driving unit of the door
lock drive assembly according to the first exemplary embodiment, FIG. 12 is an exploded
perspective view illustrating the mechanical driving unit of the door lock drive assembly
according to the first exemplary embodiment, FIG. 13 is a front view illustrating
the mechanical driving unit of the door lock drive assembly according to the first
exemplary embodiment, FIG. 14 is a perspective view illustrating the internal construction
of the mechanical driving unit of the door lock drive assembly according to the first
exemplary embodiment, and FIG. 15 is a front view illustrating the internal construction
of the mechanical driving unit of the door lock drive assembly according to the first
exemplary embodiment.
[0059] As illustrated in FIGs. 11 to 15, the mechanical driving unit 300 essentially consists
of a driving body 340, a first cam 330, and a second cam 310.
[0060] In this construction, the first cam 330 is rotatably installed on the driving body
340 to be interlocked with the keyway shaft. Specifically, the first cam 330 is rotatably
installed in the connection groove 342 formed in the driving body 340. In addition,
the first cam 330 is formed with an oval-shaped flange 331 along the outer periphery,
and is formed with a rotary axle (no reference numeral is designated) at the center
thereof. In front of the rotary axle, a second cam 310 is mounted.
[0061] Meanwhile, a gear driving unit 350 gear-coupled with the first cam 330 is rotatably
installed in a seating groove 341 formed in the driving body 340. As a result, when
the gear driving unit 350 is rotated, a gear 351 provided in the gear driving unit
350 is interlocked with a gear (not illustrated) provided on a side of the first cam
330, thereby enabling the first cam 330 to be rotated.
[0062] As a different embodiment, the gear driving unit 350 may be connected with a keyway
shaft (not illustrated), into which a key may be inserted such that the keyway shaft
can be interlocked with the key, in which case the gear driving unit 350 may be driven
when a user rotates the keyway shaft with the key.
[0063] In addition, in the outside of the first cam 330, a cover unit 320 is mounted to
protect the first cam 330, in which a surrounding part 315 is bulgingly formed in
the cover unit 320 to have a space which is sufficient for allowing the oval-shaped
flange 331 of the first cam 330 to be rotated therein. In that event, an opened part
312 is formed at an area of the surrounding part 315 to allow the oval-shaped flange
331 to be partially exposed to the outside.
[0064] On the front side of the first cam 330, an anchoring part 332 is protrusively formed
so as to mount the second cam 310. The anchoring part 332 is coupled with the second
cam 310 in the state in which it extends through the front side of the cover unit
320 to be exposed.
[0065] The second cam 310 has an outer peripheral surface with a circular shape, and a recess
311 for fixing a position is formed on the outer peripheral surface of the second
cam 310.
[0066] In this manner, the mechanical driving unit 300 is installed to be interlocked with
the slide unit 100 for driving the shaft connection unit 200 installed in the door
lock body.
[0067] Specifically, the shaft connection unit 200 is a means for selectively connecting
or disconnecting the handle shafts, in which when the shaft connection unit pushes
the pushing member 230, the handle shafts are connected with each other, and when
the shaft connection unit 200 does not push the pushing member 230, the handle shafts
are disconnected from each other.
[0068] The shaft connection unit 200 may be operated through the slide unit 100. That is,
when the pressing unit 120 of the slide unit 100 presses the pushing member 230, the
shaft connection unit 200 renders the handle shafts to be connected with each other.
[0069] The slide unit 100 is formed with a protrusion plate 123 for driving the pressing
unit 120, in which the protrusion plate 123 is installed at a position where it is
interlocked with the oval-shaped flange 331 of the first cam 330.
[0070] That is, when the first cam 330 is rotated, the protrusion plate 123 is pushed to
a side in the state in which the oval-shaped flange 331 and the protrusion plate 123
are in contact with each other. In other words, the protrusion plate 123 is moved
along the oval-shaped flange 331, and the pressing unit 120 connected with the protrusion
plate 123 is also moved to press the pushing member 230, thereby enabling the handle
shafts to be connected with each other.
[0071] At an end of the slide unit 100, a pressing member 126 is installed in a state in
which the pressing member 126 is elastically supported by a spring (not illustrated).
The pressing member 126 is installed in a state in which its tail end is in close
contact with the seating groove 311 of the second cam 310.
[0072] The pressing member 126 is a means for fixing a reference point for the second cam
310 and the first cam 330 interlocked with the second cam 310. That is, the pressing
member 126 maintains the state in which it is in close contact with the seating groove
311 of the second cam 310.
[0073] In this state, when the user rotates the keyway shaft to rotate the first cam 330,
the seating groove 311 of the second cam 310 is rotated to push the pressing member
126 upward, and when the keyway shaft is returned to its original position, the pressing
member 126 is in close contact with the seating groove 311 to be prevented from being
moved leftward or rightward.
[0074] With this construction, it is possible to prevent the keyway shaft from idling. In
addition, since the user can recognize the driving position, it is possible to improve
the operating reliability.
[0075] FIG. 16 is a perspective view illustrating a shaft connection unit of a door lock
drive assembly according to a second exemplary embodiment of the present invention,
FIG. 17 is a plan view illustrating the shaft connection unit of the door lock drive
assembly according to the second exemplary embodiment, FIG. 18 is a partial exploded
perspective view illustrating a connective relationship of a pushing member of the
door lock drive assembly according to the second exemplary embodiment, FIG. 19 is
a partial front view illustrating the operating state of a shaft connection unit of
the door lock drive assembly according to the second exemplary embodiment, and FIG.
20 is a partial side view illustrating the operating state of the shaft connection
unit of the door lock drive assembly according to the second exemplary embodiment.
[0076] As illustrated in FIGs. 16 to 20, with reference to a clutch body 410, the shaft
connection unit according to the second exemplary embodiment is formed with a handle
shaft 420 at one end and a connection end 416 at the other end.
[0077] The handle shaft 420 is equipped with an inner door handle, and hence serves as a
means to which the driving force is transmitted. As illustrated in FIG. 16, the connection
end 416 is formed with a coupling groove 412, into which the shaft of an outer door
handle is inserted.
[0078] Meanwhile, the clutch body 410 is equipped with a pushing member 430, in which as
illustrated in FIG. 17, the pushing member 430 consists of a guide part 431 and a
pin 432. In that event, the guide part 431 and the pin 432 may be integrally formed,
and takes a shape formed by coupling separate members.
[0079] Specifically, the guide part 431 is coupled to the leading end of the pin 432. In
addition, the guide part 431 is formed in a circular arc shape. Further, the pin 432
may be introduced into the insertion hole 415 (FIG. 20) formed in a handle shaft 420.
In that event, the state in which the pin 432 of the pushing member 430 is inserted
into the insertion hole 415 corresponds to the connection state of the clutch where
the driving force of the handle shaft 420 can be transmitted to the shaft coupled
to the other side (the connection end 416).
[0080] Whereas, the state in which the pin 432 is released from the insertion hole 415 corresponds
to the disconnection state of the clutch where the driving force of the handle shaft
420 is not transmitted to the shaft coupled to the connection end 416 and the handle
shaft 420 idles alone.
[0081] Meanwhile, the clutch body 410 is equipped with a bracket 433. A pin 432 is mounted
in the inside of the bracket 433 in a state in which a spring 434 is inserted into
the bracket 433, and the guide part 431 is fixed to the leading end of the pin 432.
In that event, the spring 434 may be occasionally omitted. That is, the pushing member
430 and the slide bar 125 may provide structures interlocked with each other even
without the spring 434.
[0082] Specifically, the slide bar 125 of the slide unit 100 is formed with a fixing groove
455 on the bottom side thereof. The fixing groove 455 is a place where the guide part
431 is inserted, and may be formed in a shape corresponding to the shape of the guide
part 431, for example, in a circular arc shape. Here, reference numeral 500 designates
the frame body.
[0083] As the guide part 431 is inserted into the slide bar 125, the pushing member 430
and the slide bar 125 may be interlocked with each other in the fixed state. Thus,
even when the pushing member 430 is rotated in the state in which it is inserted into
the insertion hole 415 (FIG. 20) of the handle shaft 420 (the clutch is not disconnected),
the slide bar 125 is interlocked with the pushing member 430 without being separated
from the pushing member 430, and hence the position sensing of the slide bar 125 recognizes
the clutch as not being in the disconnected state.
[0084] As illustrated in FIGs. 19 and 20, in the state in which the slide bar 125 of the
slide unit 100 presses the pushing member 430, the clutch is in the connected state,
and hence when the handle shaft 420 is rotated, the door lock is unlocked.
[0085] In that event, even when the pushing member 430 is rotated in the state where it
is abnormally released from the insertion hole 415 of the handle shaft 420, the guide
part 431 is rotated in the state in which it is inserted into the fixing groove 455
of the slide bar 125. Therefore, the present invention can recognize that the pushing
member 430 is positioned at an incompletely released state (in which the pin 432 is
caught midway) through a position sensor provided in a slide device.
[0086] As a result, even when the pushing member 430 is completely inserted into or released
from the handle shaft 420, the slide bar 125 and the pushing member 430 are interlocked
with each other at any rotating position without being released from each other. As
such, it is possible to prevent the occurrence of malfunction of the door lock in
advance.
[0087] Although the present invention was illustrated and described above with reference
to several specific exemplary embodiments, the present invention is not limited to
the exemplary embodiments. A person ordinarily skilled in the art the present invention
belongs can make various changes and modifications without departing from a technical
sprit and scope of the present invention defined in the claims.
1. A door lock drive assembly comprising:
a shaft connection unit that is provided with a pushing member configured to selectively
connect a first handle shaft and a second handle shaft in such a manner that the first
handle shaft and the second handle shaft are connected with or disconnected from each
other;
a slide unit that is provided with a pressing unit which is vertically movable to
press the pushing member; and
a mechanical driving unit that is formed with a keyway and vertically moves the pressing
unit of the slide unit when a key is inserted into the keyway and rotated.
2. The door lock drive assembly as claimed in claim 1, further comprising a pushing member,
wherein the pushing member is provided with a rotary axle hinged to the first handle
shaft, and with reference to the rotary axle, one end of the pushing member is elastically
supported on the outer peripheral surface of the first handle shaft, and the other
end is positioned in the inside of the slide unit.
3. The door lock drive assembly as claimed in claim 2, wherein the slide unit is formed
with an inclined groove, and the other end of the pushing member is positioned in
the inclined groove.
4. The door lock drive assembly as claimed in claim 1, wherein the slide unit comprises:
a slide body;
a slide member installed in the sliding body to be capable of being reciprocated to
press the pushing member, which is configured to connect and disconnect the handle
shafts, to a side;
a driving motor installed in the inside of the slide body;
a guide coil disposed in the reciprocating direction of the slide member, a side surface
of the slide member being fixed to the guide coil; and
a guide member comprising a guide plate which is rotated by the driving motor and
formed with a protrusion step on the outer peripheral surface thereof to be moved
along the guide coil, and a shaft slider configured to control the guide plate to
be contacted with or separated from the guide coil.
5. The door lock drive assembly as claimed in claim 4, wherein the guide plate is configured
such that the protrusion step is contacted with the guide coil in the state in which
the guide plate is elastically supported in the guide coil.
6. The door lock drive assembly as claimed in claim 5, wherein an inclined part is formed
at a tail end where the guide plate and the shaft slider are contacted with each other,
so that when the shaft slider pushes the guide plate, the protrusion step in a pressed
state is released from the guide coil.
7. The door lock drive assembly as claimed in claim 4, wherein the other end of the slide
member is formed with a protrusion plate configured to be interlocked with a manual
driving shaft provided in the door lock.
8. The door lock drive assembly as claimed in claim 1 or 2, wherein the mechanical driving
unit comprises:
a driving unit body;
a first cam that is rotatably installed in the driving unit body, and configured to
push a tail end of the slide unit to a side by being interlocked with a keyway shaft
to be rotated; and
a second cam that is coaxially connected with the first cam, and positioned in front
of the first cam, the second cam being formed with a recess for fixing a position.
9. The door lock drive assembly as claimed in claim 8, wherein the pressing unit protrusively
formed on the slide unit is retained in a close contact state in the recess to fix
the position of the second cam.
10. The door lock drive assembly as claimed in claim 8, wherein the first cam is formed
in such a manner that its outer peripheral, which is in contact with the slide unit,
forms an oval shape.
11. The door lock drive assembly as claimed in claim 8, wherein the driving unit body
is provided with a cover unit for protecting the first cam.
12. The door lock drive assembly as claimed in claim 1, wherein the pushing member comprises:
a pin inserted into the insertion hole of the handle shaft, and
a guide part fixed to the leading end of the pin, and coupled with the leading end
of the pressing unit.
13. The door lock drive assembly as claimed in claim 12, wherein the leading end of the
pressing unit is formed with a fixing groove, into which the guide part is inserted.
14. The door lock drive assembly as claimed in claim 12, wherein the guide part is formed
in a circular arc shape.
15. The door lock drive assembly as claimed in claim 12, wherein the pin is fitted with
a spring to elastically support the pushing member.
16. The door lock drive assembly as claimed in claim 12, wherein the pin and the guide
part are formed integrally with each other.