JP6455883B2 - Opening and closing body shock absorber - Google Patents

Description

  The present invention relates to an opening / closing body shock absorber capable of forcibly and gently opening and closing an opening / closing body such as a sliding door and a drawer when forcibly closing.

  The opening / closing body shock absorber is attached to, for example, a guide rail on the building side, two captured members respectively disposed on both the open side and the closed side of the guide rail, and attached to the sliding door side. And a capture pull-in mechanism for pulling the sliding door in the opening direction or the closing direction. This capture pull-in mechanism extends in the longitudinal direction of the guide rail and in the opening / closing direction of the sliding door, and engages (captures) with each captured member at each of the opening side and the closing side thereof. ) Is provided.

  These open side and closed side capture members can be slid in the open / close direction inside the capture pull-in mechanism. The open side and closed side capture members are connected in the opening and closing direction by a spring, and are attracted to each other by the spring force of the spring. Further, the open-side and closed-side capture members are connected by a direct acting damper (cylinder damper) for buffering the spring force attracting each other.

  In the opening / closing body shock absorber having such a configuration, when the sliding door is closed to a predetermined position on the closed side and the closed-side capturing member captures the captured member, the captured closed-side captured member is It will be drawn to the open side by the urging force. As a result, the sliding door is forced to move in the closing direction when the sliding door is closed.

  Conversely, when the sliding door is opened to a predetermined position on the open side and the open side capture member captures the captured member, the captured open side captured member is pulled toward the closed side by the biasing force of the spring. It becomes like this. Thereby, a sliding door comes to move to an opening direction compulsorily at the time of the opening.

  Further, when the sliding door is opened or closed, the above-described damper buffers the urging force of the spring, so that the sliding door opens and closes gently (see, for example, Patent Document 1).

JP 2013-170415 A

  Such a length that the opening / closing body shock absorber retracts the sliding door is a length from the position where the capturing / retracting mechanism captures the captured member until the sliding door is completely opened (closed). In addition, the pull-in length must be set shorter than the length (damper stroke) that the above-described damper can cushion.

  On the other hand, depending on the use and type of the sliding door, there is a case where it is desired to secure a long pull-in length. For this purpose, the shock-absorbing stroke of the damper described above must be increased, and the diameter of the damper main body must be changed to a larger one. For this reason, the outer shape of the capturing / retracting mechanism is also increased by one size, and the outer shape (cross-sectional shape) of the guide rail that accommodates the capturing / retracting mechanism must also be increased. As a result, guide rails having different sizes for each pull-in length must be prepared, and parts management becomes troublesome.

  Although it is possible to lengthen the stroke without changing the diameter of the damper body, a damper that allows a large pressure in the radial direction with a small diameter and allows pressure uniformly at any position in the longitudinal direction High accuracy is required. Therefore, it becomes a custom-made expensive damper, and the cost of the whole product becomes high. Moreover, in order to lengthen a stroke, it is necessary to lengthen a damper rod, but a long damper rod becomes easy to buckle with a buffering force, and it is difficult to maintain the direct-acting property of the damper.

  Furthermore, since the guide rail is in a position that can be seen by the user, if the outer shape of the guide rail is large, the guide rail is conspicuous in appearance, and the design of the entire sliding door is impaired. Therefore, it is not preferable to increase the outer shape of the guide rail.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide an opening / closing body shock absorber that does not increase the outer shape of the guide rail even if the pull-in length is increased. is there.

In order to solve the above-described problems, the present invention provides a captured member attached to a guide rail extending in the opening / closing direction, and attached to the opening / closing body, and moves in the opening / closing direction along with the opening / closing body along the guide rail. A capture retraction mechanism that captures the captured member when the opening / closing body moves to a predetermined position where the captured member is attached, and the capture retraction mechanism captures the captured member Are provided with a spring for forcibly moving the opening / closing body in the opening / closing direction and a direct acting damper for buffering the biasing force of the spring, and the stroke direction of the damper is directed to the opening / closing direction of the opening / closing body. Te, and two or more dampers to the stroke direction is arranged in series, wherein the capture retraction mechanism, the first holder and the second holder for capturing the target capture member, and Located between the serial first holder and said second holder, said capture retraction mechanism in intermediate holder movable is provided in the closing direction, said intermediate holder, the damper and the spring as a unit It is configured.

  Further, two or more dampers having the same stroke can be used.

  Further, the captured member is attached to both the open side and the closed side of the guide rail, and the capture pull-in mechanism captures the captured member on the open side and the closed side, respectively, and opens the sliding door in the opening direction or It can also be moved in the closing direction.

  In the opening / closing body shock absorber according to the present invention, the stroke direction of the direct acting damper is directed to the opening / closing direction of the sliding door, and two or more dampers are arranged in series in this stroke direction. It can be manufactured by using a plurality of dampers used in the opening / closing body shock absorber having a short length. Therefore, the pulling-in length of the sliding door can be increased by the sum of the strokes of the dampers used.

  Further, since the size of the damper used in the radial direction is the same as that of the short pull-in length, the length in the longitudinal direction of the capture pull-in mechanism is long, but the outer shape in the radial direction is not large. Therefore, guide rails having the same size (same cross-sectional shape) can be used regardless of the pull-in length. As a result, it is not necessary to manage a plurality of types of guide rails according to the pull-in length, and the parts can be shared.

  Furthermore, since the guide rail having the same size as the conventional one can be used, the overall aesthetics can be kept as it is without impairing the design of the entire sliding door device including the guide rail.

It is a front view of the sliding door upper part provided with the opening-and-closing body buffering device concerning the present invention, and the state where a sliding door is located in the middle is shown. It is a front view which shows the state which closed the sliding door from the state of FIG. It is a front view which shows the state which opened the sliding door from the state of FIG. It is a perspective view corresponding to the state (state of Drawing 1) which shows a capture pull-in mechanism alone, and has a sliding door located in the middle. It is a perspective view corresponding to the state (state of Drawing 2) which showed the capture drawing-in mechanism alone, and closed the sliding door. It is the disassembled perspective view which looked at the capture drawing-in mechanism from diagonally upper right. The intermediate holder is shown as a single unit, (A) is a perspective view seen from the upper right side, and (B) is a perspective view seen from the upper left side. The intermediate holder is shown as a single unit, (A) is a perspective view seen from the lower left diagonal side, and (B) is a perspective view seen from the lower right diagonal side. It is a perspective view which shows what is a 1st modification, Comprising: Three dampers are used. It is a perspective view which shows the thing which changed the direction of two dampers as a 3rd modification.

  Hereinafter, an opening / closing body shock absorber 10 according to an embodiment of the present invention will be described in detail with reference to the drawings. In addition, this Embodiment demonstrates what uses the opening-and-closing body buffer device 10 for a sliding door apparatus.

  FIG. 1 is a front view of an upper part of a sliding door (opening / closing body) 2 provided with an opening / closing body shock absorber 10 according to the present invention, and shows a state in which the sliding door 2 is positioned in the middle in the opening / closing direction (left and right direction on the paper surface). Is. 2 is a front view showing a state where the sliding door 2 is closed from the state shown in FIG. 1, and FIG. 3 is a front view showing a state where the sliding door 2 is opened from the state shown in FIG.

  The “door closed side” used in the following description refers to the left side of FIG. 1, and the “door open side” refers to the right side of FIG.

  The sliding door device shown in FIGS. 1 to 3 has a guide rail 1 extending in the opening / closing direction along the upper edge of the opening of the building, and the opening by moving in the opening / closing direction along the guide rail 1. A sliding door 2 (opening / closing body) that opens and closes and an opening / closing body shock absorber 10 that guides the sliding door 2 to an open position or a closed position while braking when the sliding door 2 is opened or closed.

  The opening / closing body shock absorber 10 includes a captured member 11 disposed on the door closing side of the guide rail 1, a captured member 11 disposed on the door opening side of the guide rail 1, and the guide rail 1. It is comprised with the capture drawing-in mechanism 20 which can drive | work along an opening-and-closing direction.

  As shown in FIG. 1, the two captured members 11 on the door opening side and the door closing side are each formed in a shape having two protrusions 11 a that protrude downward. These captured members 11 are respectively attached to predetermined positions on the door opening side and the door closing side (positions for guiding the sliding door 2 in the opening / closing direction) in accordance with the structure of the capturing and retracting mechanism 20.

  The catching / retracting mechanism 20 is accommodated inside the guide rail 1 having a U-shaped cross section that is open on the lower side, and is attached so as to be movable along the opening / closing direction of the guide rail 1. More specifically, the capture pull-in mechanism 20 has guide rollers 21 (four on the door closing side and two on the door opening side in FIGS. 1 to 3) on each of the door closing side and the door opening side. The guide pulling mechanism 20 can freely move in the opening / closing direction of the guide rail 1 by the guide roller 21 rolling on the rolling portion 1 a of the guide rail 1.

  Further, a hanging part 300, which will be described in detail later, is provided on the door closing side of the catching and retracting mechanism 20. One upper end corner (an upper left corner of the drawing in FIG. 1) of the sliding door 2 is attached to the hanging portion 300, and the sliding door 2 is supported in a manner of hanging.

  Moreover, although it is not the capture drawing-in mechanism 20, the suspending part 5 is attached also to the upper right corner part of the right side of the sliding door 2. As shown in FIG. The other upper end corner of the sliding door 2 (upper right corner in FIG. 1) is attached to the hanging portion 5 and supports the sliding door 2 in a manner of hanging. Thereby, the sliding door 2 comes to open and close smoothly in the opening and closing direction by the guide roller 21 capable of rolling the rolling portion 1a of the guide rail 1.

  FIG. 4 shows the capture / retraction mechanism as a single unit, and is a perspective view corresponding to a state where the sliding door is located in the middle (the state shown in FIG. 1), and FIG. 5 shows a state where the sliding door is closed (the state shown in FIG. 2). FIG. FIG. 6 is an exploded perspective view of the capturing and retracting mechanism as viewed from the upper right side.

  As shown in FIG. 6, the capture pull-in mechanism 20 is provided with a first catch portion 100 located on the door closing side and a second catch portion 150 located on the door opening side. The first catch portion 100 is configured to be slidable in the opening / closing direction inside the catching / retracting mechanism 20 and catches the protruding portion 11a of the trapped member 11 on the door closing side at a predetermined position when closing. Further, the second catch portion 150 is also slidable in the opening / closing direction inside the catching / retracting mechanism 20 and catches the protrusion 11a of the to-be-captured member 11 on the door opening side at a predetermined position when opening.

  As shown in FIG. 1, in the capture pull-in mechanism 20, the first catch portion 100 and the second catch portion 150 are positioned between the two captured members 11 in a state where the sliding door 2 is positioned in the middle in the opening / closing direction. In this state, neither the first catch part 100 nor the second catch part 150 captures the protrusion 11a of the captured member 11. That is, in this state, the capture / retraction mechanism 20 is not functioning. In this state, the first catch portion 100 is positioned on the front end side of the capture pull-in mechanism 20 in a locked state on the main body side of the capture pull-in mechanism 20, and the capture pull-in mechanism 20 in a state where the second catch portion 150 is also locked. It is located on the rear end side (see FIG. 4).

When the sliding door 2 is moved from the state shown in FIG. 4 to the door closing side (the left side in FIG. 1), when the sliding door 2 is closed, the locking of the catch portion 100 described above is released, and the first catch portion 100 is closed. The captured member 11 located on the side is captured.
In this state, as shown in FIG. 5, the first catch portion 100 captures the member 11 to be captured on the door closing side, and the door opening side (in the direction of the arrow L <b> 1 in FIG. 5) with the force of the spring 226 (see FIG. 6) ) That is, the capture pull-in mechanism 20 acts to draw the captured member 11 to be captured toward the sliding door 2 side (the right side in FIG. 1, the door opening side). As a result, the sliding door 2 is forcibly moved in the relatively closing direction (left side in FIG. 1), and is completely closed until the sliding door 2 comes into contact with the door contact on the door closing side, as shown in FIG. It becomes like this. In this closed state, the second catch portion 150 is locked and stays in the same position.

On the other hand, when the sliding door 2 is moved from the state of FIG. 4 to the door opening side (the right side of FIG. 1), the above-described procedure is performed when the sliding door 2 is fully opened in the same procedure as the movement of the door closing side. The lock of the catch part 150 is released, and the second catch part 150 captures the captured member 11 located on the door opening side.
In this state (not shown), the second catch portion 150 moves toward the door closing side by the force of the spring 226 while capturing the member to be captured 11 on the door opening side. That is, the capture pull-in mechanism 20 acts to draw the captured member 11 to be captured toward the sliding door 2 side (left side in FIG. 1). As a result, the sliding door 2 is forcibly moved in the relatively opening direction (the right side in FIG. 1), and is completely opened until the sliding door 2 comes into contact with the door opening side door as shown in FIG. It becomes like this. In this door open state, the first catch portion 100 is locked and stays at the same position.

  In addition, the structure in which the capture / retraction mechanism 20 captures the protrusion 11a of the captured member 11, the structure in which the first catch portion 100 and the second catch portion 150 can slide in the opening / closing direction within the capture / retraction mechanism 20, and the first The mechanism by which the first catch portion 100 and the second catch portion 150 are locked / unlocked is known (see, for example, Patent Document 1), and detailed description of the structure, operation, and action thereof is omitted.

  As shown in FIGS. 4 to 6, the capture pull-in mechanism 20 is provided with two dampers 221. The damper 221 is of a direct acting type in which the damper rod 221a expands and contracts with respect to the damper cylinder 221b, and the damper rod 221a is oriented such that the stroke direction (stretching direction) of the damper rod 221a is along the opening / closing direction of the sliding door 2. . The two dampers 221 are arranged in series in the stroke direction. In addition, the axes of the two dampers 221 in the stroke direction are matched.

  By arranging in this way, as shown in FIG. 5, the length L2 (the length for pulling the sliding door 2) that the first catch portion 100 slides is set so that the damper rods 221a of the two dampers 221 move to the damper cylinder 221b. This is the sum of the lengths to be pushed (damper stroke length) L2. Therefore, by arranging the dampers 221 in series in the stroke direction, the pull-in length L1 can be increased by the number of the dampers 221 provided.

  Returning to FIG. 6, the capture / retraction mechanism 20 includes a first holder 130 that accommodates the first catch portion 100, a second holder 160 that accommodates the second catch portion 150, and first and second holders. An intermediate holder 400 provided between 130 and 160 is provided. These holders 130, 160, and 400 are accommodated inside a guide portion 210 having a U-shaped cross section that is open on the upper side. These holders 130, 160, and 400 are configured to freely slide in the opening / closing direction of the sliding door 2 along the longitudinal direction of the guide portion 210.

  7A and 7B show the intermediate holder 400 as a single unit. FIG. 7A is a perspective view seen from the upper right side, and FIG. 7B is a perspective view seen from the upper left side. 8A and 8B show the intermediate holder 400 as a single unit, where FIG. 8A is a perspective view seen from the lower left oblique side, and FIG. 8B is a perspective view seen from the lower right oblique side.

  The intermediate holder 400 is formed in an elongated shape in the opening / closing direction. As shown in FIGS. 7A and 7B, a damper housing groove 467 for holding the damper cylinder 221b of the damper 221 is formed in the upper portion of the intermediate holder 400. Further, as shown in FIGS. 8A and 8B, a tension spring accommodating groove 461 is formed in the lower portion.

  The damper accommodating groove 467 is. It extends in the opening and closing direction, and is formed in an arc shape according to the outer shape of the damper cylinder 221b of the damper 221. A damper cylinder 221b is incorporated in the damper receiving groove 467, and the vertical and horizontal positions of the damper 221 are restricted.

  In addition, a support portion 465 that supports the damper rod 221a of the damper slidably from the lower side is formed at an end portion of the intermediate holder 400 on the door closing side. Further, a damper receiving portion 468 to which a tip end portion of a damper rod 221a of the damper 221 connected in series is fixed is provided at an end portion of the damper accommodating groove 467 on the door opening side. The support portion 465 and the damper receiving portion 468 also function to restrict the position of the damper 221 incorporated in the damper accommodating groove 467 in the opening / closing direction.

  The tension spring accommodating groove 461 extends in the opening / closing direction, and the tension spring 226 (see FIG. 6) enters the inside thereof. Further, two spring receivers 427 to which one end of the tension spring 226 is attached are provided at the end of the tension spring accommodating groove 461 on the door opening side.

  The damper 221 on the door closing side of the two dampers is attached to the intermediate holder 400 as shown in FIG. In addition, the tip of the damper rod 221 a is fixed to a receiving portion provided in the first internal holder 130. The damper 221 on the door opening side is incorporated in a damper receiving groove of the second inner packet holder 160, and the tip of the damper rod 221 a is fixed to the damper receiving portion 468 of the intermediate holder 400.

  On the other hand, of the two tension springs, the door closing side spring 226 has one end on the door closing side fixed to the spring receiver of the first internal holder 130 and the other end on the door opening side fixed to the spring receiver 427 of the intermediate holder 400. Is done. The door opening side spring 226 has one end on the door closing side fixed to the spring receiver 427 of the intermediate holder 400 and the other end on the door opening side fixed to the spring receiver of the second inner packet holder 160.

  As a result, the first inner holder 130, the intermediate holder 400, and the second inner holder 160 are connected in the opening / closing direction of the sliding door 2 by the two dampers 221 and the two springs 226.

  The intermediate holder 400 described above, the damper 221 and the spring 226 attached thereto are configured as one unit. That is, as shown in FIG. 9, in order to secure a longer pull-in length L <b> 1 (see FIG. 5) of the sliding door 2, an additional damper 221 is added and an attempt is made to configure a capture pull-in mechanism with three dampers. In this case, it is possible to add this one unit additionally. By unitizing in this way, it is possible to manufacture a capture and pull-in mechanism using a plurality of dampers only by increasing the length of the guide portion 210.

  According to the opening / closing body shock absorber according to the embodiment of the present invention, the member to be captured 11 attached to the guide rail 1 extending in the opening / closing direction and the sliding door 2 are opened and closed along with the sliding door 2 along the guide rail 1. And a capture pull-in mechanism 20 that captures the captured member 11 when the sliding door 2 moves to a predetermined position where the captured member 11 is attached. A spring 226 that forcibly moves the sliding door 2 in the opening and closing direction when the door is captured and a direct acting damper 221 that buffers the urging force of the spring 226 are provided, and the stroke direction of the damper 221 opens and closes the sliding door 2. Since two dampers 221 are arranged in series in this stroke direction, the sliding door 2 is pulled using a plurality of dampers 221 having a short stroke. Inclusive length L1 of (L2 + L2) can be lengthened.

  Further, since the radial size of the damper 221 to be used does not change, the length in the longitudinal direction of the capture pull-in mechanism 20 is increased, but the outer shape in the radial direction is not increased. Therefore, the guide rail 1 having the same size (same cross-sectional shape) can be used regardless of the pull-in length L1. As a result, it is not necessary to manage a plurality of types of guide rails with the pull-in length L1, and parts can be shared.

  Furthermore, since the guide rail 1 having the same size as that of the conventional one can be used, the design of the entire sliding door device including the guide rail 1 can be left as it is.

  Moreover, it becomes easy to adjust to the optimal buffering force as an opening-and-closing body buffer device by using two or more dampers. If the damping force is adjusted with a single damper, it must be adjusted with the oil viscosity in the damper. On the other hand, if two or more dampers can be used, the buffering force can be adjusted by using various dampers in combination. Therefore, it becomes possible to easily obtain the optimum buffering force. As a result, it is possible to adjust the buffering force according to the door, such as applying a large buffering force to the heavy door and applying a small buffering force to the light door.

  Further, since the intermediate holder 400 movable in the opening / closing direction within the capture / retraction mechanism 20, the damper 221 attached to the intermediate holder 400, and the spring 226 are configured as one unit, the capture / retraction is performed using two or more dampers. This unit can be added when configuring the mechanism. Therefore, it is possible to easily configure a capture and pull-in mechanism having a long pull-in length L1 without increasing the types of parts.

  Furthermore, since the two dampers having the same stroke are used, the capture and pull-in mechanism can be configured without increasing the types of dampers to be used.

Although the opening / closing body shock absorber according to the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications and changes can be made based on the technical idea of the present invention. It is.
For example, although the sliding door 2 is described in the present embodiment, the present invention is not limited to this. For example, even when a drawer or a double door is opened and closed, the present invention can be used as long as it is a device that urges the door to be forcibly closed.

  Moreover, in this Embodiment, although the opening-closing body buffer 10 is provided in the upper part of the sliding door, it can also be provided in the lower part. That is, even when the guide rail 1 is attached to the lower edge of the opening, the opening / closing body shock absorber 10 according to the present invention may be attached to the lower part thereof.

  Moreover, in this Embodiment, although the tension spring 226 and the compression coil spring 113 were described as a spring which is an elastic body, it is not limited to a spring. That is, any material that generates an urging force by elasticity can be used in the present invention.

  Furthermore, in this embodiment, the to-be-captured member 11 is attached to the guide rail 1 side, and the capture / retraction mechanism 20 is attached to the sliding door 2 side. According to this, according to the structure of the sliding door 2, the capture drawing-in mechanism 20 can be comprised in the direction which is easy to attach, and a design freedom spreads.

  Furthermore, in the present embodiment, the capture pulling mechanism that can pull the sliding door 2 in either the opening direction or the closing direction has been described. However, the sliding door 2 is pulled only in either the opening direction or the closing direction. You can also. In this case, it can be realized by not operating any function of the first catch part 100 or the second catch part 150.

  Furthermore, in the present embodiment, the damper rods 221a of the two dampers 221 are attached so as to face the door closing side, respectively, but can also be attached so that the respective damper rods 221a face oppositely. Alternatively, the damper rods 221a of the two dampers 221 can be attached so as to face the door opening side. That is, the direction of the damper 221 can be changed from the viewpoints of structure and assemblability.

For example, as shown in FIG. 10 , two damper receiving grooves 467 are provided in the intermediate holder 600 so that the two dampers 221 are assembled to the intermediate holder 600. The intermediate holder 600 is formed symmetrically with respect to the central portion in the longitudinal direction, and can be used even when the door closing side and the door opening side are reversed. Thereby, the 2nd inclusion holder can be made into the same structure as the 1st inclusion holder 130, and can aim at commonality of further parts.

  On the other hand, in the present embodiment, the same one is used as each of the two dampers 221, but two dampers having different characteristics such as strokes can also be used. For example, of the two dampers, one having a strong buffering force is used for one damper and the other having a weak buffering force is used. As a result, the damper having a weak buffering force operates first, and then the damper having a strong buffering force operates, so that the sliding door can be moved softer when the sliding door 2 is completely closed (opened). Thus, the buffering force can be changed between the first half and the second half of the pull-in length L1.

1 Guide rail 1a Rolling surface 2 Sliding door (opening / closing body)
DESCRIPTION OF SYMBOLS 5 Suspension part 10 Opening and closing body buffer 11 Captured member 11a Protrusion part 20 Capture drawing mechanism 21 Guide roller 100 1st catch part 130 1st inclusion holder 150 2nd catch part 160 2nd inclusion holder 210 Guide part 221 Damper 221a Damper Rod 221b Damper cylinder 226 Tension spring 300 Suspension part 400 Intermediate holder 427 Spring receiver 461 Tension spring accommodating groove 467 Damper accommodating groove 465 Support part 468 Damper receiving part L1 Length for retracting sliding door 2 L2 Damper stroke length

Claims (3)

A captured member attached to a guide rail extending in the opening and closing direction;
A trap attached to the opening / closing body, moving in the opening / closing direction along with the opening / closing body along the guide rail, and capturing the captured member when the opening / closing body moves to a predetermined position where the captured member is mounted. With a retracting mechanism,
The capture pull-in mechanism is provided with a spring that forcibly moves the opening / closing body in the opening / closing direction when the member to be captured is captured, and a direct acting damper that buffers the urging force of the spring,
The stroke direction of the damper is directed to the opening / closing direction of the opening / closing body, and two or more dampers are arranged in series in the stroke direction ,
The capture pull-in mechanism is positioned between the first holder and the second holder for capturing the captured member, and the first holder and the second holder, and is opened and closed in the capture pull-in mechanism. A movable intermediate holder , wherein the damper and the spring are configured as one unit in the intermediate holder . The opening / closing body shock absorber according to claim 1 , wherein two or more dampers having the same stroke are used. The captured member is attached to both the open side and the closed side of the guide rail, and the capture retracting mechanism captures the captured member on the open side and the closed side, respectively, and opens or closes the opening / closing body. The opening / closing body shock absorber according to claim 1 or 2 , wherein the opening / closing body shock absorber is moved in a direction.

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