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EP 2 138 662 B1 |
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EUROPEAN PATENT SPECIFICATION |
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Mention of the grant of the patent: |
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26.06.2013 Bulletin 2013/26 |
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Date of filing: 26.06.2009 |
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International Patent Classification (IPC):
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(54) |
Automatic door closer
Automatischer Türschließer
Ferme-porte automatique
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Designated Contracting States: |
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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 SE SI SK TR |
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Priority: |
27.06.2008 TW 97124352
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Date of publication of application: |
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30.12.2009 Bulletin 2009/53 |
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Divisional application: |
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13166246.2 |
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Proprietor: Taiwan Fu Hsing Industrial Co. Ltd. |
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Province of China (TW) |
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Inventor: |
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- Yu, Rick
Shetou Township, Changhua County (TW)
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(74) |
Representative: Beck & Rössig
European Patent Attorneys |
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Cuvilliésstrasse 14 81679 München 81679 München (DE) |
(56) |
References cited: :
EP-A2- 0 146 693 US-A- 5 901 412
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DE-U1- 20 112 896
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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).
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FIELD OF THE INVENTION
[0001] The present invention relates to a door closer, and more particularly to an automatic
door closer comprising the features of the preamble portion of claim 1.
BACKGROUND OF THE INVENTION
[0002] A door closer is typically used for providing a damping action against a door to
generate a buffer effect when closing the door, and, a resilient member installed
within the door closer can store energy during compression to automatically and slowly
pull the door back and then restore a door-closing state when an exterior force is
moved away from the door. For example, Taiwan Patent No.
428,658 discloses movement of a door closer which is performed by applying a wheel, a rack
and a spring. However, the above-described door closer has a backlash when the wheel
engages with the rack, and that backlash becomes larger and larger through long term
attrition to make engagement of the wheel and the rack cause intermittent contact,
which results in unsmooth operation of the door closer.
[0003] An automatic door closer comprising the features of the preamble portion of claim
I is known from
US 5,901,412 A.
SUMMARY OF THE INVENTION
[0004] The object of the present invention is to provide an automatic door closer which
overcomes the afore-described drawbacks inherent to the prior art.
[0005] This technical problem is solved by an automatic door closer according to claim 1.
Advantageous embodiments are laid down in further claims.
[0006] Operating smooth of the automatic door closer can be improved via reciprocation of
the slider and the tube shaped piston and action of the first oil passage according
to the present invention.
DESCRIPTION OF THE DRAWINGS
[0007]
Fig. 1 is a perspective exploded view of an automatic door closer in accordance with
a preferred embodiment of the present invention.
Fig.2 is a perspective assembly view of the automatic door closer.
Fig.3 is a longitudinal section view of the automatic door closer.
Fig.4A-4B is an action transverse section view of the automatic door closer.
Fig.5 is a side view of the automatic door closer.
Fig.6A-6B is an action view of the automatic door closer taken along line A-A of Fig.
5.
Fig.7 is another action view of the automatic door closer.
DETAILED DESCRIPTION OF THIS INVENTION
[0008] With reference to Fig.1, Fig.2 and Fig.3, an automatic door closer in accordance
with a preferred embodiment of the present invention comprises a casting 10, a sliding
assembly 20, a drive assembly 30, a piston assembly 40, an elastic assembly 50 and
a pair of lid 60. The casting 10 is defined as a long oriented axis 10a and a short
oriented axis 10b, where there are a front chamber 111, a rear chamber 113 and a middle
chamber 112 in communication with the front chamber 111 and the rear chamber 113,
which are located along the long oriented axis 10a. The casting 10 has a shaft hole
12 located along the short oriented axis 10b and penetrating the middle chamber 112.
With reference to Fig.1 and Fig.6A, the front chamber 111, the middle chamber 112
and the rear chamber 113 are filled with hydraulic oil. There are disposed a first
oil passage 13 in communication with the front chamber 111 and the rear chamber 113,
a first check valve 14 located inside the first oil passage 13, a second oil passage
15 in communication with the rear chamber 113 and a second check valve 16 located
inside the second oil passage 15 within the casting 10. The first oil passage 13 has
an oil inlet 13a in communication with the front chamber 111 and an oil outlet 13b
in communication with the rear chamber 113. The first check valve 14 is disposed adjacent
to the oil outlet 13b of the first oil passage 13. The second oil passage 15 has an
inlet 15a in communication with the rear chamber 113, a first outlet 15b and a second
outlet 15c. The second check valve 16 is disposed adjacent to the inlet 15a of the
second oil passage 15. In addition, the casting 10 further has a first speed control
valve 17 disposed at the first outlet 15b of the second oil passage 15 and a second
speed control valve 18 disposed at the second outlet 15c of the second oil passage
15 applied for adjusting oil output of the first outlet 15b and the second outlet
15c respectively. With reference again to Fig.1, Fig.2 and Fig.3, the sliding assembly
20 is movably disposed within the middle chamber 112 of the casting 10 and comprises
a slider 21, a first roller 22 and a second roller 23, wherein the slider 21 has an
upper plate 211, a lower plate 212 opposite to the upper plate 211, a side plate 213
coupling to the upper plate 211 and the lower plate 212 and a space 214 formed between
the upper plate 211 and the lower plate 212. In this embodiment, the side plate 213
has an oil drain hole 213a, the first roller 22 is movably disposed within the space
214, besides, the upper plate 211 and the lower plate 212 have an open hole 211a,
212a formed thereon respectively and which are corresponding to each other. Each of
the open holes 211 a, 212a corresponds to the shaft hole 12 of the casting 10, the
first roller 22 corresponds to each of the open holes 211 a, 212a and the second roller
23 is fixed within the space 214 and adjacent to the side plate 213 of the slider
21. In this embodiment, the slider 21 further has a through hole 215 formed thereon
and penetrating the upper plate 211 and the lower plate 212, the second roller 23
corresponds to the through hole 215. Furthermore, the sliding assembly 20 further
comprises a second fixing unit 25 and an E shaped ring 26, wherein the second fixing
unit 25 is inserted into the through hole 215 of the slider 21 and penetrates the
second roller 23 so as to fix the second roller 23 into the space 214 of the slider
21. The E shaped ring 26 is fastened to one end of the second fixing unit 25 thereby
preventing the second fixing unit 25 from slipping.
[0009] With reference again to Fig.1 and Fig.3, the drive assembly 30 comprises a shaft
31, an eccentric cam 32 coupled to the shaft 31 and a shaft cap 33. The shaft 31 is
pivotally disposed within the shaft hole 12 of the casting 10 and inserted into the
open holes 211a, 212a of the upper plate 211 and the lower plate 212 respectively,
and preferably the shaft 31 is integrally formed with the eccentric cam 32 for enhancing
structural strength of the shaft 31. The eccentric cam 32 is located within the space
214 of the slider 21 and contacts against the first roller 22 and the second roller
23 of the sliding assembly 20. The shaft cap 33 is disposed on the shaft 31 and tightly
covers the shaft hole 12 of the casting 10. In this embodiment, the shaft 31 is coupled
to the shaft hole 12 of the casting 10 by means of the shaft cap 33 and one end of
the shaft 31 protrudes from the shaft cap 33 so as to couple a linking rod unit not
shown in the drawings which is fixed on a door or a door frame. When the door is opened
or closed, the linking rod unit drives the shaft 31 of the drive assembly 30 to rotate
and the eccentric cam 32 rotates accompanying to the shaft 31, and then the rotating
eccentric cam 32 pushes the first roller 22 and the second roller 23 which contact
against the eccentric cam 32, when the eccentric cam 32 pushes the second roller 23,
the slider 21 will be moved from the middle chamber 112 to the front chamber 111.
In this invention, the second roller 23 is fixed to the slider 21 via the second fixing
unit 25 so that the slider 21 can be moved with the second roller 23 while the eccentric
cam 32 pushes the second roller 23.
[0010] With reference again to Fig.1 and Fig.3, the piston assembly 40 is disposed and movable
within the rear chamber 113 of the casting 10 and comprises a tube shaped piston 41
and a relief valve assembly 42 disposed within the tube shaped piston 41. The tube
shaped piston 41 has an outside wall 41 a, a first end portion 411 coupled to the
first roller 22, a second end portion 412 opposite to the first end portion 411, an
axial oil passage 413 in communication with the first end portion 411 and the second
end portion 412 and a transverse oil passage 414 in communication with the outside
wall 41a and the axial oil passage 413. In this embodiment, the first end portion
411 has an upper protruding plate 411a, a lower protruding plate 411b opposite to
the upper protruding plate 411a and a connecting hole 411c penetrating the upper protruding
plate 411 a and the lower protruding plate 411b. The first roller 22 is located between
the upper protruding plate 411a and the lower protruding plate 411b and corresponds
to the connecting hole 411c. Besides, the upper protruding plate 411a and the lower
protruding plate 41 1b are inserted into and axially movable within the open hole
211a of the upper plate 211 and the open hole 212a of the lower plate 212 respectively
in this embodiment. In this embodiment, the sliding assembly 20 may further comprise
a first fixing unit 24 for coupling the first end portion 411 of the tube shaped piston
41 to the first roller 22, wherein the first fixing unit 24 is inserted into the connecting
hole 411 c of the first end portion 411 and penetrates the first roller 22, so that
the first end portion 411 can be coupled to the first roller 22 via the first fixing
unit 24 and the tube shaped piston 41 will be moved within the rear chamber 113 while
the eccentric cam 32 pushes the first roller 22. In addition, the transverse oil passage
414 movably corresponds to the first outlet 15b or the second outlet 15c of the second
oil passage 15. With reference again to Fig.1 and Fig.3, the relief valve assembly
42 disposed within the axial oil passage 413 of the tube shaped piston 41 comprises
a valve carrier 421, a valve holder 422 inserted into the valve carrier 421 and a
relief valve 423 disposed within the valve holder 422. In this embodiment, the valve
holder 422 has an oil drain passage 422a and the relief valve 423 disposed within
the oil drain passage 422a will close the oil drain passage 422a0 under normal operation.
Besides, it further comprises a filter 43 disposed at one end of the valve carrier
421 in this embodiment applied for filtering impurity contained in the hydraulic oil
and preventing impurity from entering the oil drain passage 422a to cause obstruction
unable to function normally.
[0011] With reference again to Fig.1 and Fig.3, the elastic assembly 50 is disposed within
the front chamber 111 of the casting 10 and contacts against the slider 21 of the
sliding assembly 20. In this embodiment, the elastic assembly 50 is capable of adjusting
opening/closing force with respect to the automatic door closer, which comprises a
first resilient member 51 located at one side of the slider 21, an second resilient
member 52 inserted into the first resilient member 51, an adjusting unit 53, an spring
end cap 54 disposed at one end of the second resilient member 52, a rejecting unit
55 contacting against the side plate 213 of the slider 21, a third check valve 56
disposed within the rejecting unit 55, a stopper 57 able to limit the third check
valve 56 and an oil ring 58 disposed around the rejecting unit 55. The first resilient
member 51 has a first end 51a and a second end 51b contacted against the rejecting
unit 55. The rejecting unit 55 is disposed and movable within the front chamber 111
of the casting 10 and has a surface 55a facing the first resilient member 51, a protruding
pole 55b formed on the surface 55a, an outer wall 55c and an oil return passage 55d
corresponding to the oil drain hole 213a. Or, the rejecting unit 55 is integrally
formed with the side plate 213 of the slider 21 in another embodiment. One end of
the second resilient member 52 is disposed on the protruding pole 55b of the rejecting
unit 55 and contacts against the surface 55a of the rejecting unit 55. The adjusting
unit 53 is disposed at one end of the front chamber 111 and coupled to the first end
51a of the first resilient member 51, and the spring end cap 54 is disposed between
the adjusting unit 53 and the second resilient member 52. In this embodiment, the
adjusting unit 53 comprises an adjusting screw 531 and an adjusting screw cap 532
coupled to the adjusting screw 531, the spring end cap 54 is disposed between the
adjusting screw cap 532 of the adjusting unit 53 and the second resilient member 52,
and the adjusting screw cap 532 contacts against the spring end cap 54. In this embodiment,
The first resilient member 51 and the second resilient member 52 are utilized for
pressuring the rejecting unit 55, and the adjusting screw 531 may adjust compressing
force of not only the adjusting screw cap 532 against the first resilient member 51
but also the spring end cap 54 against the second resilient member 52 by pushing the
spring end cap 54, thereby further achieving the efficiency of adjusting opening/closing
force of the automatic door closer. Besides, when the slider 21 moves toward the front
chamber 111, it compresses the first resilient member 51 and the second resilient
member 52 by pushing the rejecting unit 55, contrarily, the first resilient member
51 and the second resilient member 52 may also allow the slider 21 to restore by pushing
the rejecting unit 55. In addition, with reference again to Fig.1 and Fig.3, the third
check valve 56 is disposed within the oil return passage 55d of the rejecting unit
55 and the stopper 57 penetrates the protruding pole 55b and the oil return passage
55d of the rejecting unit 55 to limit the third check valve 56 within the oil return
passage 55d. The oil ring 58 is disposed around the outer wall 55c of the rejecting
unit 55 capable of preventing the hydraulic oil from flowing between the outer wall
55c of the rejecting unit 55 and a front chamber wall 111a of the front chamber 111.
Besides, the pair of lid 60 seal the two ends of the casting 10 respectively to prevent
the hydraulic oil from leaking.
[0012] The operating method of the automatic door closer will be described as follows by
referring to Fig.4A, Fig.4B, Fig.5, Fig.6A and Fig.6B. Initially, with reference to
Fig.4A and Fig.6A, when a door is opened by an exterior force, the eccentric cam 32
rotates to push the second roller 23 and drive the slider 21 moving toward the front
chamber 111. Meantime, the slider 21 will push the rejecting unit 55 to compress the
first resilient member 51 and the second resilient member 52. When the rejecting unit
55 makes a movement, the hydraulic oil inside the front chamber 111 flows into the
oil inlet 13a of the first oil passage 13 to produce a hydraulic oil pressure inside
the first oil passage 13 capable of making the first check valve 14 open. Next, the
hydraulic oil will flow from the oil outlet 13b of the first oil passage 13 into the
rear chamber 113 and push the tube shaped piston 41 to move toward the middle chamber
112. Contrarily, with referring to Fig.4B and Fig.6B, when the exterior force is released,
both the first resilient member 51 and the second resilient member 52 push the rejecting
unit 55 and the slider 21 and enable the eccentric cam 32 to rotate. Rotation of the
eccentric cam 32 will push the first roller 22 and drive the tube shaped piston 41
to move toward the lid 60. Meantime, the hydraulic oil inside the rear chamber 113
is pushed by the tube shaped piston 41 to flow into the inlet 15a of the second oil
passage 15 to produce a hydraulic oil pressure inside the second oil passage 15 capable
of making the second check valve 16 open. Next, the hydraulic oil will flow from the
first outlet 15b and the second outlet 15c of the second oil passage 15 into the transverse
oil passage 414 and the axial oil passage 413 of the tube shaped piston 41 and through
the middle chamber 112, the oil drain hole 213a of the side plate 213 of the slider
21 and the oil return passage 55d of the rejecting unit 55 in order, and finally flow
back to the front chamber 111 to close the door. In this embodiment, the hydraulic
oil first flows from the first outlet 15b of the second oil passage 15 into the transverse
oil passage 414 and the axial oil passage 413 of the tube shaped piston 41 and following
the tube shaped piston 41 moves gradually toward the lid 60, which makes the first
outlet 15b of the second oil passage 15 close. Meantime, the hydraulic oil changes
to flow from the second outlet 15c of the second oil passage 15 into the transverse
oil passage 414 and the axial oil passage 413 of the tube shaped piston 41. Furthermore,
when the hydraulic oil flows into the oil return passage 55d of the rejecting unit
55, the third check valve 56 will open allowing the hydraulic oil to flow smoothly
back to the front chamber 111. Moreover, with reference to Fig.7, it is for designation
that there is a maximum interval X between the surface 55a of the rejecting unit 55
and the oil inlet 13a of the first oil passage 13, the eccentric cam 32 has a rotation
center O, a maximum radius R1 and a minimum radius R2, the maximum interval X must
be greater than a difference Y of the maximum radius R1 and the minimum radius R2
X>Y so as to prevent the rejecting unit 55 from obstructing motion of oil passage
when rejecting unit 55 moves in this embodiment.
[0013] In addition, the hydraulic oil flows slowly back to the front chamber 111 during
door-closing process, if the door is suddenly hit by an exterior force such as kicking
the door during door-closing process, the door closer might cause damage because it
is too late for the hydraulic oil to flow back. In order to solve this problem mentioned
above, with reference again to Fig.4B and Fig.6B, the relief valve 423 of the relief
valve assembly 42 applied in this embodiment will open quickly when the door is suddenly
hit by an exterior force during door-closing process to make the hydraulic oil located
at the rear chamber 113 flow directly into the oil drain passage 422a of the valve
holder 422 and through the middle chamber 112, the oil drain hole 213a of the side
plate 213 of the slider 21 and the oil return passage 55d of the rejecting unit 55
in order, and finally flow quickly back to the front chamber 111. Accordingly, the
hydraulic oil can flow quickly back as to prevent the door closer from damaging as
well as operating smooth of automatic door closer can be improved via reciprocation
of the slider 21 and the tube shaped piston 41 and action of the first oil passage
13 and the second oil passage 15 according to the present invention.
1. An automatic door closer comprising:
a casting (10) having a front chamber (111), a rear chamber (113), a middle chamber
(112) in communication with the front chamber (111) and the rear chamber (113), a
shaft hole (12) penetrating the middle chamber (112) and a first oil passage (13),
the first oil passage (13) having an oil inlet (13a) in communication with the front
chamber (111) and an oil outlet (13b) in communication with the rear chamber (113);
a sliding assembly (20) disposed within the middle chamber (112) of the casting (10)
comprising a slider (21) disposed between the oil inlet (13a) and the oil outlet (13b),
a first roller (22) and a second roller (23) disposed within the slider (21) respectively;
a drive assembly (30) comprising a shaft (31) and an eccentric cam (32) coupled to
the shaft (31), wherein the shaft (31) is pivotally disposed within the shaft hole
(12), the eccentric cam (32) is located within the slider (21) and contacts against
the first and second rollers (22, 23);
a tube shaped piston (41) disposed within the rear chamber (113) of the casting (10)
having a first end portion (411) and a second end portion (412) opposite to the first
end portion (411), the first end portion (411) connecting with the first roller (22);
and
a first resilient member (51) disposed within the front chamber (111) of the casting
(10);
characterized in that
a second oil passage (15) is disposed within the casting (10), the second oil passage
(5) having an inlet (15a), a first outlet (15b) and a second outlet (15c) in communication
with the rear chamber (113) respectively; and that the tube shaped piston (41) has
an outside wall (41a), an axial oil passage (413) in communication with the first
and second end portions (411, 412) and a transverse oil passage (414) in communication
with the outside wall (41a) and the axial oil passage (413), wherein the transverse
oil passage (414) of the tube shaped piston (41) movably corresponds to the first
outlet (15b) or the second outlet (15c) of the second oil passage (15).
2. The automatic door closer in accordance with claim 1, further comprising a first check
valve (14) located within the first oil passage (13) and disposed adjacent to the
oil outlet (13b) of the first oil passage (13).
3. The automatic door closer in accordance with claim 1 or 2, further comprising a second
check valve (16) located within the second oil passage (15) and disposed adjacent
to the inlet (15a) of the second oil passage (15).
4. The automatic door closer in accordance with claim 1, wherein the slider (21) has
an upper plate (211), a lower plate (212) opposite to the upper plate (211), a side
plate (213) coupling to the upper plate (211) and the lower plate (212) and a space
(214) formed between the upper plate (211) and the lower plate (212), the first roller
(22) is movably disposed within the space (214), the second roller (23) is fixed within
the space (214).
5. The automatic door closer in accordance with claim 4, wherein the upper plate (211)
and the lower plate (212) of the slider (21) have an open hole (211a, 212a) formed
thereon respectively and which are corresponding to each other, each of the open holes
(211a, 212a) corresponds to the shaft hole (12) of the casting (10), the first roller
(22) corresponds to each of the open holes (211a, 212a).
6. The automatic door closer in accordance with claim 4 or 5, wherein the second roller
(23) is adjacent to the side plate (213) of the slider (21).
7. The automatic door closer in accordance with claim 1, further comprising a relief
valve assembly (42) which is disposed within the tube shaped piston (41) and comprises
a valve carrier (421), a valve holder (422) inserted into the valve carrier (421)
and a relief valve (423) disposed within the valve holder (422).
8. The automatic door closer in accordance with claim 7, wherein the valve holder (422)
of the relief valve assembly (42) has an oil drain passage (422a) and the relief valve
(423) is disposed within the oil drain passage (422a).
9. The automatic door closer in accordance with claim 1, further comprising a rejecting
unit (55) disposed between the slider (21) and the first resilient member (51) and
contacting against the slider (21).
10. The automatic door closer in accordance with claim 9, wherein the rejecting unit (55)
has a surface (55a) facing the first resilient member (51), there is a maximum interval
(X) between the surface (55a) and the oil inlet (13a) of the first oil passage (13),
the eccentric cam (32) has a rotation center (O), a maximum radius (R1) and a minimum
radius (R2), the maximum interval (X) is greater than a difference (Y) of the maximum
radius (R I) and the minimum radius (R2).
11. The automatic door closer in accordance with claim 9, wherein the slider (21) has
a side plate (213), the side plate (213) has an oil drain hole (213a), the rejecting
unit (55) has an oil return passage (55d) corresponding to the oil drain hole (213a).
12. The automatic door closer in accordance with claim 9, further comprising a second
resilient member (52) inserted into the first resilient member (51) and contacting
against the rejecting unit (55).
1. Automatischer Türschließer, umfassend:
ein Gehäuse (10) mit einer vorderen Kammer (111), einer hinteren Kammer (113) und
einer mittleren Kammer (112), die mit der vorderen Kammer (111) und der hinteren Kammer
(113) in Verbindung steht, einer Wellenöffnung (12), welche die mittlere Kammer (112)
durchdringt, und einem ersten Ölkanal (13), wobei der erste Ölkanal (13) einen Öleinlass
(13a) aufweist, der mit der vorderen Kammer (111) in Verbindung steht und einen Ölauslass
(13b), der mit der hinteren Kammer (113) in Verbindung steht;
eine Schlittenbaugruppe (20), die in der mittleren Kammer (112) des Gehäuses (10)
angeordnet ist und ein Gleitstück (21) umfasst, das zwischen dem Öleinlass (13a) und
dem Ölauslass (13b) angeordnet ist, wobei in dem Gleitstück (21) eine erste Rolle
(22) respektive eine zweite Rolle (23) angeordnet sind;
eine Antriebsbaugruppe (30), umfassend eine Welle (31) und einen exzentrischen Nocken
(32), der mit der Welle (31) gekoppelt ist, wobei die Welle (31) drehbar in der Wellenöffnung
(12) angeordnet ist und sich der exzentrische Nocken (32) in dem Gleitstück (21) befindet
und mit der ersten und zweiten Rolle (22, 23) in Kontakt steht;
einen rohrförmigen Kolben (41), der in der hinteren Kammer (113) des Gehäuses (10)
angeordnet ist und einen ersten Endabschnitt (411) und einen zweiten Endabschnitt
(412) gegenüber dem ersten Endabschnitt (411) aufweist, wobei der erste Endabschnitt
(411) mit der ersten Rolle (22) in Verbindung steht; und
ein erstes federndes Element (51), das in der vorderen Kammer (111) des Gehäuses (10)
angeordnet ist;
dadurch gekennzeichnet, dass
ein zweiter Ölkanal (15) in dem Gehäuse (10) angeordnet ist, wobei der zweite Ölkanal
(15) einen Einlass (15a), einen ersten Auslass (15b) und einen zweiten Auslass (15c)
aufweist, die jeweils mit der hinteren Kammer (113) in Verbindung stehen; und dass
der rohrförmige Kolben (41) eine Außenwand (41a) aufweist, einen axialen Ölkanal (413),
der mit dem ersten und zweiten Endabschnitt (411, 412) in Verbindung steht, und einen
transversalen Ölkanal (414), der mit der Außenwand (41a) und dem axialen Ölkanal (413)
in Verbindung steht, wobei der transversale Ölkanal (414) des rohrförmigen Kolbens
(41) beweglich mit dem ersten Auslass (15b) oder dem zweiten Auslass (15c) des zweiten
Ölkanals (15) korrespondiert.
2. Automatischer Türschließer nach Anspruch 1, weiterhin umfassend ein erstes Rückschlagventil
(14), das sich in dem ersten Ölkanal (13) befindet und neben dem Ölauslass (13b) des
ersten Ölkanals (13) angeordnet ist.
3. Automatischer Türschließer nach Anspruch 1 oder 2, weiterhin umfassend ein zweites
Rückschlagventil (16), das sich in dem zweiten Ölkanal (15) befindet und neben dem
Einlass (15a) des zweiten Ölkanals (15) angeordnet ist.
4. Automatischer Türschließer nach Anspruch 1, wobei das Gleitstück (21) eine obere Platte
(211) aufweist, eine untere Platte (212) gegenüber der oberen Platte (211), eine Seitenplatte
(213), die an die obere Platte (211) und die untere Platte (212) anschließt und einen
Raum (214), der zwischen der oberen Platte (211) und der unteren Platte (212) gebildet
wird, wobei die erste Rolle (22) beweglich in dem Raum (214) angeordnet ist und die
zweite Rolle (23) in dem Raum (214) fixiert ist.
5. Automatischer Türschließer nach Anspruch 4, wobei auf der oberen Platte (211) und
der unteren Platte (212) des Gleitstücks (21) jeweils eine offene Bohrung (211a, 212a)
ausgebildet ist und die offenen Bohrungen einander entsprechen, wobei die offenen
Bohrungen (211a, 212a) jeweils mit der Wellenöffnung (12) des Gehäuses (10) korrespondieren
und wobei die erste Rolle (22) mit den beiden offenen Bohrungen (211a, 212a) korrespondiert.
6. Automatischer Türschließer nach Anspruch 4 oder 5, wobei die zweite Rolle (23) neben
der Seitenplatte (213) des Gleitstücks (21) angeordnet ist.
7. Automatischer Türschließer nach Anspruch 1, weiterhin umfassend eine Überdruckventil-Baugruppe
(42), die in dem rohrförmigen Kolben (41) angeordnet ist und einen Ventilträger (421),
einen Ventilhalter (422), der in den Ventilträger (421) eingesetzt ist, und ein Überdruckventil
(423), das in dem Ventilhalter (422) angeordnet ist, umfasst.
8. Automatischer Türschließer nach Anspruch 7, wobei der Ventilhalter (422) der Überdruckventil-Baugruppe
(42) einen Ölablasskanal (422a) aufweist und das Überdruckventil (423) in dem Ölablasskanal
(422a) angeordnet ist.
9. Automatischer Türschließer nach Anspruch 1, weiterhin umfassend eine Rückstoßeinheit
(55), die zwischen dem Gleitstück (21) und dem ersten federnden Element (51) angeordnet
ist und mit dem Gleitstück (21) in Kontakt steht.
10. Automatischer Türschließer nach Anspruch 9, wobei die Rückstoßeinheit (55) eine Fläche
(55a) aufweist, die zu dem ersten federnden Element (51) hin ausgerichtet ist, ein
maximales Intervall (X) zwischen der Fläche (55a) und dem Öleinlass (13a) des ersten
Ölkanals (13) besteht, der exzentrische Nocken (32) ein Rotationszentrum (O), einen
maximalen Radius (R1) und einen minimalen Radius (R2) aufweist, und das maximale Intervall
(X) größer als eine Differenz (Y) aus dem maximalen Radius (R1) und dem minimalen
Radius (R2) ist.
11. Automatischer Türschließer nach Anspruch 9, wobei das Gleitstück (21) eine Seitenplatte
(213) aufweist, die Seitenplatte (213) eine Ölablassöffnung (213a) hat und die Rückstoßeinheit
(55) einen Ölrücklaufkanal (55d) aufweist, der mit der Ölablassöffnung (213a) in Verbindung
steht.
12. Automatischer Türschließer nach Anspruch 9, weiterhin umfassend ein zweites federndes
Element (52), das in das erste federnde Element (51) eingesetzt ist und mit der Rückstoßeinheit
(55) in Kontakt steht.
1. Ferme-porte automatique comprenant :
un carter (10) ayant une chambre antérieure (111), une chambre postérieure (113),
une chambre du milieu (112) en communication avec la chambre antérieure (111) et la
chambre postérieure (112), un trou de tige (12) qui pénètre la chambre du milieu (112)
et un premier passage d'huile (13), le premier passage d'huile (13) ayant une entrée
d'huile (13a) en communication avec la chambre antérieure (111) et une sortie d'huile
(13b) en communication avec la chambre postérieure (113) ;
un ensemble coulissant (20) placé à l'intérieur de la chambre du milieu (112) du carter
(10) comprenant une coulisse (21) placée entre l'entrée d'huile (13a) et la sortie
d'huile (13b), un premier galet (22) et un second galet (23) placé respectivement
à l'intérieur de la coulisse (21) ;
un ensemble d'entraînement (30) comprenant une tige (31) et une came excentrique (32)
couplée à la tige (31), la tige (31) étant placée de manière pivotante à l'intérieur
du trou de tige (12), la came excentrique (32) étant située à l'intérieur de la coulisse
(21), et des contacts contre le premier et le second galet (22, 23) ;
un piston en forme de tube (41) placé à l'intérieur de la chambre postérieure (113)
du carter (10) ayant une première portion d'extrémité (411) et une seconde portion
d'extrémité (412) en face de la première portion d'extrémité (411), la première portion
d'extrémité (411) étant reliée au premier galet (22) et
un premier élément élastique (51) placé à l'intérieur de la chambre antérieure (111)
du carter (10),
caractérisé en ce
qu'un second passage d'huile (15) est placé à l'intérieur du carter (10), le second passage
d'huile (15) ayant une entrée (15a), une première sortie (15b) et une seconde sortie
(15c) respectivement en communication avec la chambre postérieure (113) et
que le piston en forme de tube (41) a une paroi extérieure (41a), un passage axial d'huile
(413) en communication avec la première portion d'extrémité et la seconde portion
d'extrémité (411, 412) et un passage d'huile transversal (414) en communication avec
la paroi extérieure (41 a) et le passage axial d'huile (413), le passage d'huile transversal
(414) du piston en forme de tube (41) correspondant de manière mobile à la première
sortie (15b) ou à la seconde sortie (15c) du second passage d'huile (15).
2. Ferme-porte automatique selon la revendication 1 comprenant de plus un premier clapet
de retenue (14) situé à l'intérieur du premier passage d'huile (13) et placé adjacent
à la sortie d'huile (13b) du premier passage d'huile (13).
3. Ferme-porte automatique selon la revendication 1 ou 2 comprenant de plus un second
clapet de retenue (16) situé à l'intérieur du second passage d'huile (15) et placé
adjacent à l'entrée (15a) du second passage d'huile (15).
4. Ferme-porte automatique selon la revendication 1, la coulisse (21) ayant une plaque
supérieure (211), une plaque inférieure (212) en face de la plaque supérieure (211),
une plaque de côté (213) couplée à la plaque supérieure (211) et à la plaque inférieure
(212) et un espace (214) formé entre la plaque supérieure (211) et la plaque inférieure
(212), le premier galet (22) étant placé de manière mobile à l'intérieur de l'espace
(214), le second galet (23) étant fixé à l'intérieur de l'espace (214).
5. Ferme-porte automatique selon la revendication 4, la plaque supérieure (211) et la
plaque inférieure (212) de la coulisse (21) ayant un trou ouvert (211a, 212a) formé
respectivement dessus et qui sont correspondants l'un à l'autre, chacun des trous
ouverts (211a, 212a) correspondant au trou de tige (12) du carter (10), le premier
galet (22) correspondant à chacun des trous ouverts (211a, 212a).
6. Ferme-porte automatique selon la revendication 4 ou 5, le second galet (23) étant
adjacent à la plaque de côté (213) de la coulisse (21).
7. Ferme-porte automatique selon la revendication 1 comprenant de plus un ensemble de
soupape de sûreté (42) qui et placé à l'intérieur du piston en forme de tube (41)
et qui comprend un porteur de soupape (421), un support de soupape (422) inséré dans
le porteur de soupape (421) et une soupape de sûreté (423) placée à l'intérieur du
support de soupape (422).
8. Ferme-porte automatique selon la revendication 7, le support de soupape (422) de l'ensemble
de soupape de sûreté (42) ayant un passage de purge d'huile (422a) et la soupape de
sûreté (423) étant placée à l'intérieur du passage de purge d'huile (422a).
9. Ferme-porte automatique selon la revendication 1 comprenant de plus une unité de réjection
(55) placée entre la coulisse (21) et le premier élément élastique (51) et en contact
contre la coulisse (21).
10. Ferme-porte automatique selon la revendication 9 dans lequel l'unité de réjection
(55) a une surface (55a) en face du premier élément élastique (51), il y a un intervalle
maximum (X) entre la surface (55a) et l'entrée d'huile (13a) du premier passage d'huile
(13), la came excentrique (32) a un centre de rotation (O), un rayon maximum (R1)
et un rayon minimum (R2), l'intervalle maximum (X) étant plus grand qu'une différence
(Y) entre le rayon maximum (R1) et le rayon minimum (R2).
11. Ferme-porte automatique selon la revendication 9, la coulisse (21) ayant une plaque
de côté (213), la plaque de côté ayant un trou de purge d'huile (213a), l'unité de
réjection (55) ayant un passage de retour d'huile (55d) correspondant au trou de purge
d'huile (213a).
12. Ferme-porte automatique selon la revendication 9 comprenant de plus un second élément
élastique (52) inséré dans le premier élément élastique (51) et en contact contre
l'unité de réjection (55).
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