JP4847209B2 - Hinged door shock absorber - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hinged door constituted by attaching a door panel to a door frame by a hinge openably and closably, capable of preventing the door panel from being abruptly closed by a simple structure, and having satisfactory appearance similar to that of an ordinary hinged door. <P>SOLUTION: This shock absorbing device of the hinged door is constituted by arranging a slider member 5 constituted by providing a pin member 2 protrudedly on a lower face of an upper side frame part of the door frame and mounting a device main body 1 in an upper frame part of the door panel by opposing to the pin member 2 in a buried condition to engage and disengage the pin member 2 with/from the inside of the device main body 1, a coil spring 3 for pulling the slider member 5 at all times, a damper 4 as a shock absorbing means, and a lock means 7 for locking the slider member 5 while the coil spring 3 is pulled. The pin member 2 is engaged with the slider member 5 when the door panel is closed to release locking and turn it in the direction of closing. When opening the door panel, the pin member 2 leaves and is disengaged from the slider member 5 after locking the slider member 5. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a shock absorber for a hinged door that can be freely opened and closed at an entrance of a building such as an apartment or a detached house.

  Conventionally, as a hinged door provided in a building, one having a structure in which a door panel is attached to a door frame by a hinge so as to be opened and closed has been widely adopted. There is a risk that injury will occur if a finger or hand is caught between the door tip of the hinged door and the door stop of the door frame or between the door tip and the door frame. is there.

  For this reason, for example, as described in Patent Document 1, a door closer is attached to the upper end of the hinged door, and the pivot shaft and the door frame protruding from the door closer are connected to the arm member and the door frame. Connected by the attached guide member, the turning direction of the rotating shaft when opening and closing the hinged door is opposite to each other, and when the opening door is opened, the rotating shaft rotates to turn the cylinder part inside the door closer When the piston body that is slidably fitted into the body is slid against the spring force and is released after opening the hinged door, the piston body is slid in the opposite direction by the restoring force of the spring and By rotating the rotation shaft in the reverse direction, the hinged door is rotated in the closing direction via the arm member and the guide member. At this time, the opening degree of the hydraulic oil flow passage in the cylinder part is adjusted by an adjustment valve so that the sliding speed of the piston body, that is, the closing speed of the hinged door is changed, and the hinged door is configured to be buffered. Yes.

Further, as described in Patent Document 2, a recessed portion is formed in the door frame portion of the hinged door, the hinge side frame, or the door frame side frame portion, and a rod-like sponge or A structure of a hinged door has been developed which is constructed so as to relieve an impact when a fingertip or the like is sandwiched by attaching a cushioning material such as a rubber material.
JP-A-8-158734 JP 2004-316409 A

  However, according to the shock absorber composed of the door closer described above, it is difficult to incorporate the entire device into the frame portion of the hinged door, and not only the closer body but also the arm member and the guide member are exposed to the outside and the appearance is remarkably increased. In addition, there is a problem that the structure is complicated and the cost is high.

  On the other hand, in the latter case, in the structure in which the cushioning material is attached to the door tip part of the hinged door or the side frame part of the door frame, even if the effect of alleviating the impact when a finger or the like is pinched can be obtained, strong winds etc. Therefore, there is a problem in that it cannot be a fundamental solution because the swing door cannot be prevented from closing vigorously.

  The present invention has been made in view of such problems. The object of the present invention is to prevent the sudden closing of the hinged door with a simple structure and to smoothly open and close the door. Thus, it is an object to provide a shock absorber for a hinged door that is not exposed to the outside and has a good appearance.

  To achieve the above object, the shock absorber for a hinged door according to the present invention is, as described in claim 1, a shock absorber for a hinged door, wherein a door panel is attached to a door frame via a support shaft so as to be freely opened and closed. It consists of a pin member projecting on the door frame side and a device main body mounted on the door panel side. The device main body has a retracting function with a retracting function inside, and the buffer means can reciprocate in the retracting direction. And a slider member provided with an engaging portion that engages and disengages from the pin member, and a posture in which the engaging member can receive the pin member against the pulling force of the pulling function of the buffer means And a lock mechanism that is unlocked when the pin member is locked to the engaging portion by the rotation of the door panel in the closing direction. The door panel is rotated in the closing direction by the pulling force of the pulling function of the buffer means in a state where the pin member is locked to the engaging portion of the slider member by releasing the rack, and the slider is moved by the pin member when the door panel is opened. The member is configured to move to the lock position of the lock mechanism against the pulling force of the pulling function.

Furthermore, in the shock absorber for the hinged door configured as described above, the present invention is configured such that the door panel is pivotably attached to an end of at least one frame portion of the upper and lower frame portions facing the support shaft side of the door frame pivotably attached to the door panel. An apparatus main body comprising a hollow case body in which a pin member protrudes in the direction, and a slot is provided in the panel frame portion of the door panel facing the pin member so that the pin member can be inserted and removed. In a state where the guide member of the slider member is provided along the groove portion at one end portion of the apparatus body, and the engaging portion of the slider member with respect to the pin member is always directed to the groove portion. The slider member is configured to move along the guide groove.

The invention according to claim 2 is formed at the one end portion of the guide groove as a locking groove portion refracted in the direction from the distal end of the slider member toward the proximal end side with respect to the length direction of the guide groove. A first locking pin and a second locking pin that are slidably inserted into the guide groove are projected at both ends of the base end portion of the slider member, and the locking groove portion and the locking groove portion are detachably locked. The first locking pin on the one end side constitutes a locking mechanism, and the door is formed by projecting an engaging portion composed of a first engaging piece and a second engaging piece on both ends of the slider member. When the panel is closed, the pin member is brought into contact with and locked with the second locking piece on the other end side to release the lock, and when the door panel is opened, the pin member is locked with the first locking piece on the one end side. In this state, the slider member is moved to one end side and locked.

According to a third aspect of the present invention, the buffer means having the pull-in function includes a coil spring and a damper disposed in the other end portion of the apparatus body, and one end of the coil spring and the damper is connected to a link member. It is connected to the base end surface of the slider member via a rotation.

  According to the first aspect of the present invention, the pin member protrudes on the door frame side, and the buffer means provided with a pull-in function on the door panel side is coupled to the buffer means so as to be reciprocally movable in the pull-in direction, and A slider member provided with an engaging portion that engages with and disengages from the pin member, and a state in which the slider member is held in a posture in which the engaging portion can receive the pin member against the pulling force of the pulling function in the buffer means. The conventional door closer has a structure in which the main body of the apparatus is provided with a lock mechanism that locks and unlocks when the pin member is locked to the engaging portion by rotation of the door panel in the closing direction. As described above, it is possible to provide a shock-absorbing device that is excellent in appearance without requiring an arm member, a link mechanism, or the like that connects the main body and the door frame. It can be a door panel constituting the hinged door by a simple structure such as disengaging the slider member of the apparatus main body equipped with a pin member projecting from the frame side door panel side is cushioned and smoothly opened and closed.

  At this time, as described above, the pin member projecting on the door frame side and the device main body mounted on the door panel side are not connected at all, so the door panel is rotated from the open state to the closing direction. Then, the door panel is easily rotated in the closing direction in the same manner as a normal hinged door not provided with a buffer means until the pin member is engaged with the engaging portion of the slider member provided in the apparatus main body. After the pin member is locked to the engaging portion of the slider member, the slider member that is locked in a state where the pulling force of the buffer means having the pulling function is held is released and the pulling is performed. The door panel can be closed slowly and gently around the support shaft while pulling the slider member that is locked to the pin member by force, preventing injury by pinching your hand or fingertip. Door can be.

  Further, when the door panel is rotated in the opening direction from the closed state, the slider member is moved toward one end of the apparatus body while extending the retracting function of the buffer means while being locked to the pin member, and the door panel is suddenly moved. Can be opened while preventing the door from opening, and when the door panel is opened to a certain degree of opening, the slider member is locked to the lock mechanism to keep the pulling force by the pulling function of the buffer means. In this state, the door panel can be largely opened in the same manner as a normal hinged door while unlocking the pin member from the slider member and separating the slider member from the pin member.

Further, according to the present invention , the pin member protrudes in the vertical direction at the end of at least one of the upper and lower frame portions facing the support shaft side of the door frame, while facing the pin member. Since the above-mentioned apparatus main body consisting of a hollow case body provided with a groove hole portion for removably receiving the pin member is mounted in the panel frame portion of the door panel to be embedded, only the pin member is attached to the outside. The structure is exposed and has a good appearance that is almost the same as a normal hinged door, and this shock absorber can be easily installed not only on newly installed door panels but also on existing door panels. In addition, it is possible to constitute a hinged door having a buffer function, and in addition, a guide groove for the slider member is provided at one end portion of the apparatus main body along a groove hole portion through which the pin member is inserted and removed. Spin against pin member Since the slider member is moved along the guide groove in a state where the engaging portion of the ider member is always directed to the groove portion, the pin member and the pin member are always in a predetermined position when the door panel is closed. The slider member can be accurately engaged, and when the door panel is opened, the pin member reaching the above position can be removed from the engaging portion of the slider member, and the slider member can be stopped at the lock position.

According to the second aspect of the present invention, the one end of the guide groove is formed in the locking groove that is refracted in the direction from the distal end of the slider member toward the proximal end with respect to the length direction of the guide groove. On the other hand, a first locking pin and a second locking pin, which are slidably inserted into the guide groove, are projected on both ends of the base end portion of the slider member, and are engaged with and disengaged from the locking groove portion and the locking groove portion. The locking mechanism is configured by the first locking pin on the one end side that is freely locked, and an engaging portion composed of a first engaging piece and a second engaging piece is provided at both ends of the tip of the slider member. Since the first locking pin is locked in the locking groove, the slider member is located on the locking groove side with the second locking pin located in the upper end of the guide groove as the center. It is possible to keep the inclined state.

  Therefore, in this state, the groove hole portion through which the pin member inserts and removes the first engagement piece projecting on the tip end side of the slider member and the first engagement piece on one end side of the second engagement piece. The second engagement piece can be made to protrude into the groove hole portion while being retracted, so that the pin member is passed over the first engagement piece when the door panel is closed. The first locking pin can be pivoted in the direction away from the locking groove by using the second locking pin as a fulcrum, and the lock can be positively released, and the rotation can cause the first locking pin to be released. The engagement piece is locked to the pin member, and the door panel can be automatically and gently closed by the retraction force of the retraction function in the buffer means.

  Furthermore, when the door panel is released from the closed state, the slider member engaged with the pin member can be moved toward the one end side along the guide groove while pulling the pulling function of the buffer means according to the release. When reaching the one end of the guide groove, the first locking pin is moved to the locking groove side with the second locking pin as a fulcrum to lock the slider member in that position and the pin member is automatically moved from the engaging portion of the slider member. It is possible to leave it for the next closing operation.

As the buffer means having the pull-in function, for example, as described in claim 3 , it can be constituted by a coil spring and a damper, and the coil spring and the damper are placed in the other end portion of the apparatus main body. As described above, the door panel is braked when the door panel is released and closed by connecting one end thereof to the base end surface of the slider member via the link member so as to be freely rotatable. Can be smoothly and buffered.

  Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of the main part of a door panel A equipped with the shock absorber of the present invention, FIG. 2 is a longitudinal front view thereof, and FIG. FIG. 4 is a partial perspective view of a hinged door in which a door panel A is pivotally attached to a door frame B by a hinge C, which is a pivotal support, A is formed by integrally fixing a frame portion (not shown) to the four side end surfaces of the rectangular panel, and the upper and lower portions of one side frame portion of the door panel A are the upper and lower portions of the opposite side frame portion of the door frame B. The hinge body C is pivotally attached to the hinge C to form an open door. Further, the device body 1 is mounted on the door panel A side, while the device body 1 is opposed to the door frame B side so as to face the pin member 2. Is protruding.

  The device main body 1 of the shock absorber is composed of a rectangular tube-shaped hollow case body, the shock absorber 4 having a pull-in function 3 therein, and the pin member connected to the shock absorber 4 so as to be reciprocally movable in the pull-in direction. The slider member 5 provided with the engaging portion 6 that engages with and disengages from the slider 2 and the engaging member 6 can receive the pin member 2 against the pulling force of the pulling function 3 in the buffer means 4. A lock mechanism 7 that locks in a state in which the posture is maintained and that unlocks when the pin member 2 comes into contact with and engages with the engaging portion 6 by turning the door panel A in the closing direction. ing.

  The structure of this shock absorber will be described in more detail. The pin member 2 protrudes downward on the lower surface of the end of the upper frame portion B1 of the door frame B facing the hinge C side. The pin member 2 is not limited to the upper frame portion B1 side of the door frame B, and faces upward at the center of the upper surface of the end portion facing the hinge C side of the lower frame portion (not shown) of the door frame B. In short, it is sufficient to project in the vertical direction on at least one of the upper and lower frame portions of the door frame B. Moreover, as a material for forming the pin member 2, in addition to metals and alloys such as stainless steel, iron, and aluminum, hard synthetic resins and resin-reinforced wood can be used, but considering strength and durability, It is preferably formed from a high-strength metal or alloy. The pin member 2 has a base end fixed integrally to the central portion of the seat plate 2a, and is configured to be attached to the frame portion of the door frame B by screws, bolts, adhesive, or the like. .

  On the other hand, the apparatus main body 1 is formed with a recess a having the same size and shape as the apparatus main body 1 in the panel frame A1 of the door panel A facing the pin member 2, and the apparatus main body 1 is formed in the recess a. It is attached to the embedded state by fitting with the vertical direction in the door width direction. The device main body 1 may also be mounted on at least one of the upper and lower panel frame portions of the door panel A so as to face the pin member 2, and in the drawing, the device main body 1 faces the hinge C side of the upper panel frame portion A1. The upper surface of the horizontally elongated rectangular upper wall portion is flush with the upper surface of the panel frame portion A1, and one end surface that is refracted in a direction perpendicular to the upper wall surface is the panel frame portion A1. It is mounted in a state where it is exposed on one side end face of the hinge C side. In addition, the apparatus main body 1 which consists of this hollow case body is a product made from a metal or a hard synthetic resin.

  At one end portion of the upper wall portion of the apparatus main body 1, a groove hole portion 8 is provided penetrating between the upper and lower surfaces of the upper wall portion so as to removably receive the pin member 2 when the door panel A is opened and closed. . The groove 8 is formed in an arcuate groove centered on the axis of the hinge C and having a radius between the shaft and the pin member 2, and the groove width is larger than the diameter of the pin member 2 and One end thereof is opened to the outside from one end face of the apparatus main body 1. In addition, the length of the pin member 2 may be formed so as to reach the middle in the vertical width direction in the apparatus main body 1 so that the pin member 2 can be engaged with and disengaged from the engaging portion 6 of the slider member 5. .

  Further, the upper and lower opposing surfaces at one end of the upper and lower wall portions of the apparatus main body 1 have the same direction as the slot 8 so as to be parallel to the slot 8 on the hinge C side with respect to the slot 8. Are provided with guide grooves 9 and 9 of the slider member 5 curved in an arc shape with the same degree of curvature. The guide grooves 9 and 9 may be provided directly on the upper and lower opposing surfaces at one end of the apparatus main body 1. However, in the figure, the fixing plates 10 and 10 provided with the guide grooves 9 are provided on the upper and lower sides of the apparatus main body. It is fixed to the surface with screws or adhesive. At one end of the upper and lower guide grooves 9, 9 is formed a locking groove portion 9 a refracted at a substantially right angle toward the hinge C side with respect to the length direction of the guide groove 9.

The slider member 5 is formed in a small block shape whose upper and lower surfaces are in sliding contact with the smooth opposing surfaces of the upper and lower fixing plates 10 and 10 provided with the guide grooves 9 and 9, and on the hinge C side. The first locking pin 11 and the second locking pin 12 protrude at a certain distance from one end and the other end of the upper and lower surfaces of the base end portion with the surface side facing the base end as the base end portion. The first and second locking pins 11 and 12 projecting upward at both ends of the upper surface are provided in the upper guide groove 9 and projecting downward at both ends of the lower surface. The first and second locking pins 11 and 12 are slidably inserted and engaged with the lower guide groove 9 respectively. Then, the slider member 5 is located at the position by the first locking pin 11 projecting from one end side and the locking groove portion 9a of the guide groove 9 for releasably locking the first locking pin 11. The lock mechanism 7 is configured to lock in an immobile state while maintaining a predetermined posture.

  Further, the first end portion and the other end portion of the front end surface of the slider member 5 facing toward the groove portion 8 are spaced apart from each other so that the pin member 2 can be received, and have a certain protruding length. An engaging portion 6 composed of a first engaging piece 6A and a second engaging piece 6B is projected toward the lower space of the groove 8 and the slider member 5 extends along the guide groove 9 to the guide groove. In the locked state where the first locking pin 11 is locked to the locking groove 9a of the guide groove 9 by moving to one end side of the slider 9, the slider member 5 has one end thereof at the second locking pin 12 as a fulcrum. It will be in the state tilted with respect to the other end part in the direction which retracts from the groove part 8 toward the latching groove part 9a side.

  Accordingly, the first engagement piece 6A is retracted from the lower space portion of the groove portion 8 in the direction of immersing toward the hinge C, and the second engagement piece 6B protrudes into the lower space portion of the locking groove portion 9a. When the door panel A is closed, the pin member 2 passes over the tip of the first engagement piece 6A and is formed between the first engagement piece 6A and the second engagement piece 6B. It is received in the groove 13 and is configured to contact and lock the second engagement piece 6B. The opposing surfaces of the first and second engaging pieces 6A and 6B are inclined locking surfaces 6a that are inclined in a direction in which the opening width of the concave groove portion 13 gradually increases toward the opening end of the concave groove portion 13. 6b, respectively.

  A buffer means 4 having the pull-in function 3 is disposed in the other end of the apparatus body 1. The pull-in function 3 is made of a coil spring, and the buffer means 4 is made of a damper. The pull-in function 3 made of a coil spring and the buffer means 4 made of a damper are arranged in parallel in a state in which the length of the apparatus main body 1 is directed. The one end of the coil spring and the rod end of the damper are integrally connected to the connecting member 14 and the other ends of the coil spring and the damper are fixed in the other end of the apparatus main body 1. Further, the other end portion of the link member 15 is rotatably connected to the connecting member 14, and one end portion of the link member 15 is connected to the other end portion of the base end surface of the slider member 5, that is, the second locking pin. 12 is centered and is rotatably connected to the end opposite to the second engagement piece 6B side. The coil spring which is the pull-in function 3 always applies a pull-in force (tensile force) to the slider member 5 via the connecting member 14 and the link member 15 in the direction of pulling toward the other end side of the apparatus body 1. ing.

  Describing the operation of the shock absorber for the hinged door configured as described above, FIG. 1 shows a state in which the door panel A is opened at a certain angle. In this state, the door frame B is moved downward from the upper frame portion B1. The device main body 1 mounted in an embedded state at the end of the upper panel frame portion A1 of the door panel A is separated from the pin member 2 projecting toward the end, and one end of the device main body 1 is separated. The slider member 5 disposed in the part extends the retracting function 3 made of a coil spring and the rod of the buffer means 4 made of a damper, and the slider member 5 pushes the first locking pin 11 of the guide groove 9. Locked in the locking groove 9a.

  Further, the pulling force of the pulling function 3, that is, the pulling force of the coil spring, locks the first locking pin 11 with the second locking pin 12 of the slider member 5 as a fulcrum through the connecting member 14 and the link member 15. The locked state is maintained by urging the groove 9a in a direction of positively pressing the groove 9a.

  When the door panel A is rotated in the closing direction from this state, the groove member 8 provided at one end of the upper wall portion of the apparatus body 1 is relatively centered on the support shaft made of the hinge C. Therefore, the pin member 2 is inserted so as to enter the slot 8 from the open end of the slot 8. At this time, in the slider member 5, the first locking pin 11 locked in the locking groove portion 9 a with respect to the second locking pin 12 on the other end side inserted in the guide groove 9 is a hinge C. The second engaging piece 6B protrudes into the lower space of the groove portion 8 with respect to the first engaging piece 6A and is displaced from the first engaging piece 6A. Since the concave groove 13 between the second engagement pieces 6B is opened obliquely toward the pin member 2, when the pin member 2 relatively enters the opening end of the groove hole 8, the pin member 2 As shown in FIG. 5, immediately after passing over the first engaging piece 6A and being received in the recessed groove portion 13, it comes into contact with the inclined locking surface 6b of the second engaging piece 6B.

  When the door panel A further rotates in the closing direction from the state in which the pin member 2 is in contact with the second engagement piece 6B of the slider member 5, the pin member 2 moves the second engagement piece 6B to the other end of the groove 8. The slider member 5 is relatively moved toward the other end while being pushed forward, and the slider member 5 is moved by the pressing force of the pin member 2 with the second locking pin 12 in the guide groove 9 as a fulcrum. The first locking pin 11 is rotated while moving the first locking pin 11 from the locking groove portion 9a toward one end side of the guide groove 9 against the pulling force of the pull-in function 3 composed of the coil spring. At the same time as the locking of the slider member 5 by the locking with the locking groove portion 9a is released, the first engagement piece 6A protrudes toward the lower space portion of the guide groove 9 by the rotation of the slider member 5, and FIG. As shown in FIG. 2, the outer peripheral surface of the first engaging piece 6A on the side opposite to the entering direction in the pin member 2 It is brought into contact.

  Thus, when the first locking pin 11 moves from the locking groove 9a to one end of the guide groove 9 and the slider member 5 is unlocked, the pulling force of the pulling function 3, that is, the tension of the spring The slider member 5 causes the first and second locking pins 11 and 12 to extend along the guide groove 9 in a state where the inclined locking surface 6a of the first engagement piece 6A is locked to the pin member 2 by force. It moves to the other end side of the guide groove 9 while sliding.

  At this time, since the pin member 2 is fixed to the upper frame portion B1 of the door frame B, the first engaging piece 6A of the slider member 5 in which the pulling force by the pulling function 3 is locked to the pin member 2 is removed. The device body 1 acts in a direction to pull the device body 1 toward the pin member 2, and the door panel A is biased in a direction to close around the hinge C by this acting force, so that the pin member 2 is a groove portion of the device body 1. The door panel A is closed as shown in FIG. 7 while relatively moving toward the other end on the deep bottom side of the slot 8 in the interior of the slot 8. At this time, the door panel A can be closed slowly while braking the pulling force of the pulling function 3 made of a coil spring by the buffer means 4 made of a damper.

  Next, when the door panel A is rotated in the opening direction from the closed state, the pin member 2 according to the rotation relatively moves from the other end side of the slot 8 toward the one end opening side. The first engagement piece 6A of the slider member 5 that is locked to the pin member 2 by the movement consists of the coil spring and the damper against the pulling force of the pull-in function 3, that is, the tensile force of the coil spring. The slider member 5 is integrated with the pin member 2 with the first locking pin 11 and the second locking pin 12 inserted and engaged in the guide groove 9 while extending the rod of the buffer means 4 as a guide. The groove 8 is moved toward one end opening.

  At this time, the first locking pin 11 of the slider member 5 always moves toward the locking groove 9a with the second locking pin 12 as a fulcrum by the pulling force of the pulling function 3, that is, the tensile force of the coil spring. Pin that is urged in the direction to be engaged and is engaged with the inclined engagement surface 6a of the first engagement piece 6A and presses the first engagement piece 6A toward the opening end side of the groove 8 Since the slider member 5 is always urged by the member 2 in the direction of rotating toward the locking groove portion 9a with the second locking pin 12 as a fulcrum as described above, the first engagement of the slider member 5 is also performed. As soon as the stop pin 11 reaches the connecting portion with the engaging groove 9a at one end of the guide groove 9, the inner end of the engaging groove 9a is refracted at a substantially right angle from one end of the guide groove 9 toward the hinge C side. The slider member 5 is moved to the position as described above by the retraction force of the retraction function 3. The pin member 2 is released from the opening end of the groove 13 and the pin member 2 is released from the opening end of the groove 13 at the same time the pin member 2 and the inclined engagement surface 6a of the first engagement piece 6A are released. The panel A is opened at a predetermined angle, and from this state, the panel A can be opened largely by hand in the same manner as a normal hinged door without operating the shock absorber.

  In the above embodiment, the coil spring as the retracting function 3 and the damper as the buffer means 4 are arranged in parallel, but the piston portion of the damper is placed in the damper with the slider member 5. The buffer means 4 having the pull-in function 3 may be configured by incorporating a coil spring that is biased in the pulling direction, and further, the buffer means 4 having the other pull-in function 3 may be adopted. Further, the guide groove 9 for guiding the slider member 5 is provided on the hinge C side with respect to the groove portion 8, but may be provided on the opposite side, and the groove portion 8 is a movement locus of the pin member 2. Instead of forming an arc shape along the top, the upper wall portion of the apparatus main body 1 may be largely cut away to provide a space portion where the pin member 2 can freely enter and exit.

The cross-sectional view of the principal part of the door panel equipped with the shock absorber. The longitudinal front view. The perspective view of the internal structure of an apparatus main body. The partial perspective view of the hinged door which opens and closes a door panel. The cross-sectional view of a state in which the pin member is engaged with the slider member. The partial cross section figure of the state rotated in the direction which a door panel closes. The cross-sectional view of a part of the closed state.

Explanation of symbols

A door panel B door frame C hinge 1 device main body 2 pin member 3 spring as a pull-in function 4 damper as a buffering means 5 slider member 6 engaging portion
6A 1st engagement piece
6B Second engaging piece 7 Locking means 8 Groove hole 9 Guide groove
11 First locking pin
12 Second locking pin
15 Link member

Claims (3)

A shock absorber for a hinged door in which a door panel is attached to a door frame via a support shaft so that the door panel can be freely opened and closed , and at the end of at least one of the upper and lower frame portions facing the support shaft side of the door frame in the vertical direction A pin member projecting toward the pin member and a device main body mounted in an embedded state in the panel frame portion of the door panel facing the pin member , the device main body receiving the pin member in a removable manner A buffer member provided with a pull-in function inside a hollow case body provided with a hole, and a slider member provided with an engaging portion that is coupled to the buffer member so as to be reciprocally movable in the pull-in direction and is engaged with and disengaged from the pin member. And a guide groove of the slider member is provided along the groove hole portion, and the engaging portion of the slider member with respect to the pin member is always directed to the groove hole portion along the guide groove. Sly Yes configured to move the member, further, door with lock with its engaging portion the slider member against the retraction force of the pulling function of the buffer means it holds the possible posture accept pin member A lock mechanism is provided so that the lock is released when the pin member is locked to the engaging portion by rotation of the panel in the closing direction, and the pin member is attached to the engaging portion of the slider member by releasing the lock of the lock mechanism. In the locked state, the door panel is rotated in the closing direction by the pulling force of the pulling function of the buffer means, and the lock mechanism is locked against the pulling force of the pulling function by the pin member when the door panel is opened. A shock absorber for a hinged door configured to move to a position. One end portion of the guide groove is formed in a locking groove portion that is refracted in the direction from the distal end of the slider member toward the proximal end side with respect to the length direction of the guide groove, and on both ends of the proximal end portion of the slider member, A first locking pin and a second locking pin that are slidably inserted into the guide groove are provided so as to project and engage with the locking groove and the locking groove so as to be freely disengaged. The pin constitutes a locking mechanism, and an engaging portion composed of a first engaging piece and a second engaging piece is provided on both ends of the tip of the slider member so that the pin member is connected to the other end when the door panel is closed. The slider member is moved to the one end side with the pin member being locked to the first locking piece on the one end side when the door panel is opened. the hinged door of claim 1, characterized in that movement is allowed to configure so as to lock Opposition apparatus. The buffer means having a pull-in function is composed of a coil spring and a damper disposed in the other end of the apparatus main body, and one end of the coil spring and the damper can be freely rotated to the base end surface of the slider member via a link member. The hinged door shock absorber according to claim 1 , wherein the hinged door shock absorber is connected to the door.

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