JP2011214343A - Retracting device for sliding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sharply reduce the number of components to reduce manufacturing cost and to facilitate assembling while having a return mechanism attaining engagement with an engaging pin by a simple method even when an engaging piece engaged with the engaging pin is not positioned in a temporary stop state.SOLUTION: A slider 5 includes a tip side engaging piece 15e engaged with the engaging pin 11 following the opening operation of a sliding door 2 to move the slider 5 to the sliding door end side and to swing the slider 5 into the temporary stop state, and a base end side engaging piece 15c engaged with the engaging pin 11 following the closing operation of the sliding door 2 to swing the slider 5 in the temporary stop state to release the temporary stop state and to retract the sliding door 2 into the closing position. When the slider 5 is not in the temporary stop state in the closing operation of the sliding door 2, the tip side engaging piece 15e is elastically deformed in part to override the engaging pin 11 so that the upper end can recede into a case 12.

Description

  The present invention relates to a sliding door retracting device that automatically closes to a closed position after closing from an open state to a predetermined position.

  Conventionally, a suspended door type runner device fixed to the upper end of a sliding door is guided along a guide rail fixed to the head of the door frame, and a door fixed to the lower end of the sliding door is used for the door. For sliding doors such as sliding doors that are guided along a rail, various sliding door retracting devices have been proposed that automatically close to a closed position after closing from an open state to a predetermined position.

  For example, in Patent Document 1 below, a retracting device main body installed in an embedded state on the upper end surface of a sliding door and an engaging pin fixed to the door frame, the pulling device main body is engaged along the sliding door opening / closing direction. A case provided with a guide pin guide groove, a slider provided in the case so as to be slidable along the sliding door opening / closing direction, and a piston type damper provided in the case connected to the slider And a spring member having one end locked to the slider and the other end locked to the case, and an engagement that is swingably provided on the slider and engages a slide guide groove formed on the case. There is disclosed a retracting device for a sliding door that includes a projecting portion and an operating cam that is engaged with and disengaged from the engaging pin when the sliding door is opened and closed.

  Further, in Patent Document 1 below, in order to solve the problem that the engagement with the engagement pin cannot be achieved when the operating cam is not positioned in the temporarily stopped state when the sliding door is installed, the operating cam is temporarily stopped. A return mechanism for positioning is also disclosed. The return mechanism is provided with a stopper member at the head, and is biased and held toward the head by the biasing force of the elastic member with respect to the slider, and an engagement shaft that protrudes in the horizontal direction from the main body is provided. And a projecting / retracting bolt that collides with the stopper member in a protruding state, and is biased and held toward the working cam side by a biasing force of an elastic member, and a tip is in contact with the back side of the working cam, A cam latch provided with an inclined side slidably in contact with the engaging shaft provided on the camshaft, and when the cam latch advances by an urging force as the operating cam swings, the camshaft pushes down the engaging shaft slidably in contact with the inclined side. Accordingly, the mechanism is interlocked so as to immerse the retractable bolt.

JP 2007-278057 A

  According to the return mechanism described in Patent Document 1, after the built-in sliding door is moved in the opening direction, the sliding bolt is further moved in the opening direction after the retracting bolt collides with the stopper member, the slider is moved. The engaging projection is engaged with the bent guide groove to be temporarily stopped, and the cam latch is advanced by an urging force as the operating cam swings and is in sliding contact with the inclined side. The retracting bolt is retracted by depressing the engaging shaft. After that, when the sliding door is closed as usual, the engaging pin collides with the operating cam and temporarily stops by swinging the operating cam. The state is released, and the sliding door is retracted to the tightened position by the urging force of the spring member while receiving the braking force by the piston type damper.

  As described above, in the return mechanism described in Patent Document 1, in order for the return mechanism to function, it is necessary to move the sliding door in the opening direction after the sliding door is built, and it is troublesome to perform such an operation one by one. Therefore, there has been a demand for a return mechanism that can return by a simpler method.

  Further, in the return mechanism, it is necessary to provide a stopper member in the duck, or to provide a projecting bolt, a cam latch, etc. on the slider, and there are problems such as an increase in manufacturing cost due to an increase in the number of parts and a complicated assembly. There was concern.

  Therefore, the main problem of the present invention is that the engagement with the engagement pin can be achieved by a simple method even when the engagement piece engaged with the engagement pin is not positioned in the temporary stop state, and the number of parts is greatly increased. It is an object of the present invention to provide a sliding door retracting device that can reduce manufacturing costs and facilitate assembly.

In order to solve the above-mentioned problem, the present invention according to claim 1 includes a retracting device main body installed on the sliding door or door frame, and an engagement fixed on the door frame or sliding door in a protruding state toward the retracting device main body. Consisting of pins,
The retracting device main body is provided so as to be slidable along the opening / closing direction of the sliding door in the case, and has an engaging protrusion that engages with a slide guide groove formed in the case, and an upper end portion of the case A slider provided in a projecting state and engaged with and disengaged from the engaging pin, a piston damper provided in the case with a piston tip connected to the slider, and one end locked to the slider And the other end is locked to the case, and is constituted by a spring member that gives the slider a biasing force in the retracting direction of the sliding door,
On the sliding door end side of the slide guide groove, a temporary stop portion formed of a bent guide groove is formed continuously from the slide guide groove,
The slider engages with the engaging pin in accordance with the opening operation of the sliding door and moves the slider to the sliding door end side against the biasing force of the spring member, and the sliding door end side of the sliding guide groove In this case, the engagement protrusion of the slider is guided to the bent guide groove side to swing the slider to a temporary stop state, and the engagement with the engagement pin is released accordingly. When the sliding door is closed, the tip end side engaging piece and the engaging pin are engaged by releasing the temporary stop state by swinging the slider in the temporary stop state by engaging with the engaging pin. And a proximal end engaging piece to be engaged, and when the sliding door is closed, the sliding door is retracted to the closed position by the biasing force of the spring member while receiving a braking force from the piston damper. There is,
The front end side engaging piece elastically deforms a part of the front end side engaging piece so as to be able to get over the engaging pin when the slider is not temporarily stopped during the closing operation of the sliding door. Is provided so that it can be immersed in the case.

  In the first aspect of the present invention, the slider is provided with a distal end side engagement piece and a proximal end side engagement piece which are provided with an upper end protruding from the case and engage with and disengage from the engagement pin. If the slider is not in a temporarily stopped state when the sliding door is closed, a part of the front end side engaging piece is elastically deformed so that the engaging pin can be overcome, and the upper end portion is inside the case. Even if the slider is not in a temporarily stopped state, the tip side engagement piece is moved into the case when the tip side engagement piece comes into contact with the engagement pin simply by closing the sliding door as usual. It is possible to get inside and get over, and the engagement state between the slider and the engagement pin can be easily restored.

  Further, there is no need to provide parts such as a retracting bolt and a cam latch as in the above-mentioned Patent Document 1, the number of parts can be greatly reduced, and manufacturing costs can be reduced and assembly can be facilitated.

  According to a second aspect of the present invention, there is provided the sliding door retracting device according to the first aspect, wherein at least the distal end side engaging piece is formed of an elastically deformable resin material.

  According to the second aspect of the present invention, when the slider is not in a temporarily stopped state when the sliding door is closed, the front end side engaging piece easily gets over the engaging pin and can be easily restored after getting over. In addition, as a material constituting at least the distal end side engaging piece, a resin material that can be elastically deformed is used.

  According to a third aspect of the present invention, the front end side engaging piece includes a folded portion that is folded back from the front end portion of the slider in a horizontal letter shape, and a hanging piece that extends downward from the front end. And a horizontal locking piece that protrudes in the horizontal direction at the tip of the drooping piece and engages with the slider main body, and the upper end of the folding part can be immersed in the case by elastic deformation. Item 12. A sliding door retracting device according to any one of Items 1 and 2, is provided.

  The invention according to claim 3 defines a specific structure for enabling the upper end portion of the distal end side engaging piece to be immersed in the case, and is folded back in a horizontal letter shape from the distal end portion of the slider. A folded portion, a hanging piece extending downward from its tip, and a horizontal locking piece that protrudes horizontally at the tip of this hanging piece and engages the slider body, The upper end portion can be immersed in the case by elastic deformation of the folded portion. In this structure, the engaging pin comes into contact with the hanging piece. The force acting at this time tries to deform upward so that the folded portion and the hanging piece come out. This deformation is prevented by the stop piece being engaged with the slider body.

As the present invention according to claim 4, the sliding door is a suspension door in which the suspension wheel runner device fixed to the upper end portion of the sliding door is guided to travel along a guide rail fixed to the duck of the door frame,
The pull-in device main body is provided slidably in the guide rail by providing a runner locking portion that can be locked to the suspension-wheel-type runner device integrally or separately with respect to the pull-in device main body, The sliding door retracting device according to any one of claims 1 to 3, wherein the engaging pin is fixed to an inner surface of the guide rail in a protruding state.

  The invention according to claim 4 is a hanging door type in which the suspension wheel runner device fixed to the upper end of the sliding door is traveled and guided along a guide rail fixed to the head frame of the door frame as the sliding door. It is related with the retraction apparatus in the case. In this case, the retractor main body is provided with a runner engaging portion that can be engaged with the suspension vehicle runner device, and the retractor main body is provided so as to be slidable in the guide rail together with the suspension vehicle runner device.

  The runner locking portion may be provided integrally or separately with respect to the retracting device main body. In particular, when it is provided separately, only the runner locking portion can be easily replaced according to the type of the suspension vehicle type runner device, and the versatility becomes high.

As this invention which concerns on Claim 5, the said sliding door is a sliding door by which the doorwheel fixed to the lower end part is run-guided along the rail for door cars,
The said drawing-in apparatus main body is installed in the embedding state in the upper end surface of the said sliding door, The said engagement pin is fixedly installed in the state made to protrude in the downward part to the duck part of a door frame. A sliding door retractor is provided.

  The invention according to claim 5 relates to a retracting device in the case where the sliding door is a sliding door in which a door fixed to the lower end is guided along a rail for the door. In this case, the retracting device main body is installed in an embedded state on the upper end surface of the sliding door.

  The pulling-in device for a sliding door according to any one of claims 1 to 3, wherein the pulling-in device main body is installed in a duck or a sill of a door frame, and the engaging pin is fixed to the sliding door. Is provided.

  The invention according to claim 6 is a use example suitable for retrofitting a retracting device to an existing sliding door, wherein the retracting device main body is installed in a duck or a sill of a door frame, and the engaging pin is a sliding door. It is intended to be fixed to

  As described above in detail, according to the present invention, even when the locking piece that engages with the engagement pin is not positioned in the temporary stop state, the engagement with the engagement pin can be achieved with a simple method, and the number of parts can be increased. The manufacturing cost can be reduced and the assembly can be facilitated.

It is a front view of the sliding door 2 to which the retracting device 1 which concerns on this invention is applied. It is the II section enlarged view. (A) is a perspective view of the upper guide rail 4 to which the retracting device 1 is applied, and (B) is a partially cutaway view thereof. The retractor main body 10 is shown, (A) is a top view, (B) is a front view, (C) is a side view, and (D) is a sectional view. The retractor main body 10 is shown, (A) is a perspective view, and (B) is a sectional perspective view. The slider 15 is shown, (A) is a top view, (B) is a front view, and (C) is a side view. 3 is a perspective view showing a slider 15. FIG. (A), (B) is a perspective view which shows the assembly procedure of the slider 15. FIG. (A)-(C) are sectional drawings which show the operating point of the drawing-in apparatus 1. FIG. (A), (B) is sectional drawing which shows the return | restoration point of the retractor 1. FIG. It is sectional drawing of the drawing-in apparatus main body 10 which concerns on a 2nd form example. The retractor main body 10 which concerns on a 3rd form example is shown, (A) is a top view, (B) is a front view. The retractor 1 which concerns on a 4th example is shown, (A) is a front view, (B) is a side view. The retractor 1 which concerns on a 5th form example is shown, (A) is a side view, (B) is the BB sectional drawing.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
<< First embodiment >>
[Structure of retractor 1]
The sliding door 2 shown in FIG. 1 has a panel 7 fitted in a frame 3 made up of an upper rod 3A, a lower rod 3B, a vertical rod 3C, and 3D made of a metal material such as aluminum. 6A, a sill 6B, and side frames 6C and 6D are housed in a door frame 6.

  In the illustrated example, the sliding door 2 is a suspension door type in which a suspended-runner-type runner device 8 fixed to the upper end of the sliding door 2 is guided along the upper guide rail 4 fixed to the door frame 6A. It is a thing. Specifically, the upper guide rail 4 is disposed on the duck 6A, the lower guide rail 5 is disposed on the sill 6B, and a suspended-car runner device 8 fixed to the upper end of the sliding door 2 is provided. The sliding door 2 can be freely opened and closed by traveling and being guided along the lower guide rail 5 by the lower runner 9 that is guided to travel along the upper guide rail 4 and is fixed to the lower end of the sliding door 2.

  As shown in FIG. 1 to FIG. 3, in the upper guide rail 4, a retracting device main body 10 that is locked by a suspension-type runner device 8 on the door side of the sliding door 2 and moves integrally, and this retracting A retracting device 1 is provided that includes an engaging pin 11 fixed in a state of projecting downward toward the device main body 10. The retracting device main body 10 can slide along the upper guide rail 4 together with the suspension-type runner device 8 as the sliding door 2 is opened and closed.

  When the closing operation is performed from the open state, the sliding door 2 is retracted to the closed position by the engagement of the retracting device main body 10 and the engaging pin 11.

  The structure of the retracting device 1 including the retracting device main body 10 and the engaging pin 11 will be described in detail.

  As shown in FIGS. 4 and 5, the retractor main body 10 is provided so as to be slidable in the case 12 along the opening / closing direction of the sliding door 2 and is engaged with a slide guide groove 13 formed in the case 12. A slider having a proximal end engaging protrusion 14 a and a distal end engaging protrusion 14 b that are mated with each other, and having an upper end protruding from the case 12 so as to be engaged with and disengaged from the engaging pin 11. 15, a piston type damper 16 provided in the case 12 with the piston tip connected to the slider 15, one end locked to the slider 15 and the other end locked to the case 12, The slider 15 is mainly composed of a spring member 17 that applies an urging force in the retracting direction of the sliding door 2 to the slider 15.

  As shown in FIGS. 4 and 5, the case 12 is provided integrally with a case main body 12A having a substantially square cross section and a sliding door end side of the case main body 12A. It is comprised from the runner latching | locking part 12B which has the engaging groove S by which a shaft can be latched.

  A substantially half of the case main body 12A on the center side of the sliding door is provided with an intermediate wall 12a partitioned in the vertical direction, and a damper for accommodating the piston type damper 16 whose upper side opens upward along the longitudinal direction of the member. An accommodation space 12b is formed, and the lower side is a spring accommodation space 12c for accommodating the spring member 17 that opens downward along the longitudinal direction of the member. A locking groove 12e for locking one end of the spring member 17 is provided at the sliding door central side end of the spring accommodating space 12c.

  In addition, the slider body 15d is slidably provided in approximately half of the case body 12A on the sliding door end side, and is a slider space 12d that opens upward along the longitudinal direction of the member.

  The slide guide grooves 13 are formed in both side walls of the slider space 12d. The slide guide groove 13 is bent downward continuously in a linear guide groove 13a along the opening / closing direction of the sliding door 2 and the sliding door end side of the linear guide groove 13a. The bent guide groove 13b forms a temporary stop portion K of the slider 15.

  On the other hand, as shown in FIGS. 6 and 7, the slider 15 includes a piston connecting portion 15 a to which the piston tip is connected and a lower end extending to the one end of the spring member 17. A spring locking portion 15b in which a stop groove 15d is formed, a base end side engaging piece 15c extending above the piston connecting portion 15a and having an upper end protruding from the upper end of the case 12, and the piston A distal end side engaging piece that extends toward the sliding door end portion side of the connecting portion 15a, has a predetermined separation width from the proximal end side engaging piece 15c, and has an upper end portion protruding from the upper end of the case 12. 15e. The base end side engagement piece 15c and the front end side engagement piece 15e are provided with a separation width between which the engagement pin 11 can be engaged.

  A through hole 15f is formed in the piston connecting portion 15a of the slider 15, and a shaft member 18 (see FIGS. 4 and 5) passes through the through hole 15f and through a through hole (not shown) provided at the tip of the piston. ) Is provided, the piston tip and the slider 15 are connected. The shaft member 18 is provided with both ends projecting from both sides of the slider 15, and the projecting both ends form base end side engaging projections 14 a and 14 a that engage with the slide guide groove 13. .

  Further, front end side engaging protrusions 14b and 14b protruding from both sides are provided at the center of the front end side engaging piece 15e of the slider 15.

  More specifically, as shown in FIG. 8 (A), the distal end side engaging piece 15e includes a folded portion 15g folded back from the distal end portion of the slider 15 in a horizontal letter shape, and further downward from the distal end. And a horizontal locking piece 15i that protrudes horizontally at the tip of the hanging piece 15h and engages with the slider body. Then, the horizontal locking piece 15i is engaged with the slider body by being pushed into the immersive side to obtain the state shown in FIG. Therefore, even when the engaging pin 11 abuts against the hanging piece 15h and a force is applied when the sliding door 2 is opened and closed, the horizontal locking piece 15i serves as a retaining member, and the hanging piece 15h and the folded portion 15g Is prevented from being deformed upward so as to come out.

  The distal end side engaging piece 15e is preferably formed of an elastically deformable resin material. When the tip side engagement piece 15e formed in this way is pressed downward from the upper end portion, the upper end portion can be moved downward by elastic deformation of the folded portion at the tip of the slider. The amount of elastic deformation in the vertical direction is such that when the slider 15 is incorporated in the retracting device main body 10, it can get over the engagement pin 11, and the upper end portion of the distal end side engagement piece 15 e is in the case 12. It is preferable to be able to immerse.

  As shown in FIG. 2, the engagement pin 11 is formed in a substantially square block shape, and is screwed to the head 6 </ b> A through a through hole formed in the center.

[Description of operation of retractor 1]
(When opening sliding door 2)
As shown in FIG. 9A, when the sliding door 2 is in the closed position, the slider 15 is positioned on the center side of the sliding door, and the proximal end side engagement piece 15c and the distal end side engagement piece 15e of the slider 15 are located. The engaging pin 11 is located in the space part.

  When the opening operation of the sliding door 2 in the closed state is performed, as shown in FIG. 9B, due to the engagement between the engagement pin 11 and the distal end side engagement piece 15e, the slider 15 is moved to the spring member 17. While moving to the sliding door end side against the urging force, the leading end side engaging protrusion 14b of the slider 15 is guided to the bent guide groove 13b side, thereby swinging the slider 15 to a temporary stop state, Accordingly, the engagement between the distal end side engagement piece 15e and the engagement pin 11 is released. Therefore, as shown in FIG. 9C, the sliding door 2 can be further opened.

(When sliding door 2 is closed)
Next, the operation state at the time of closing operation of the sliding door 2 will be described. When the sliding door 2 is closed from the opened state (FIG. 9C) to the predetermined position shown in FIG. 9B, the proximal-side engagement piece of the slider 15 temporarily stopped by the opening operation. The engaging pin 11 comes into contact with 15c, and the slider 15 is swung to release the temporarily stopped state. As a result, the engagement pin 11 is positioned at a separation portion between the proximal end side engagement piece 15c and the distal end side engagement piece 15e of the slider 15, and the distal end side engagement piece 15e and the engagement pin 11 are engaged. Become. Thereafter, the sliding door 2 is retracted to the closed position by the urging force of the spring member 17 while receiving the braking force by the piston type damper 16 (FIG. 9A).

(When the sliding door 2 is closed when the slider 15 is not temporarily stopped)
As shown in FIG. 10 (A), when the slider 15 is built with the sliding door 2 that is not temporarily stopped, or when the slider 15 is temporarily released from the temporary stop state for some reason when the sliding door 2 is opened, the slider 15 The operation state at the time of closing operation of the sliding door 2 when 15 is not in the temporary stop state will be described. In this case, as shown in FIG. 10 (B), the distal end side engagement piece 15e is elastically deformed at a part of the distal end side engagement piece 15e so that it can get over the engagement pin 11. Can be immersed in the case 12, it is possible to return to the normal closed state shown in FIG. 9A by closing the sliding door 2 to the closed position. Thereafter, by performing the opening operation again, the slider 15 can be temporarily stopped.

<< Second Embodiment >>
Compared to the retracting device 1 according to the first embodiment, the second embodiment shown in FIG. 11 has a case body 12A and a runner locking portion 12B integrally provided. The case body 12A and the runner locking portion 12B are provided separately. At this time, it is preferable that the runner locking portion 12B has a structure that is pivotally supported by the connecting shaft member 19 with respect to the sliding door end portion side of the case main body 12A. By providing the runner locking portion 12B separately from the case main body 12A, only the runner locking portion 12B can be easily replaced according to the type of the suspended wheel runner device 8.

<< Third embodiment >>
The third embodiment shown in FIG. 12 is configured such that the case 12 slides along the upper guide rail 4 as compared with the retracting device 1 according to the first and second embodiments. On the other hand, by providing rollers 20, 20... On both side surfaces of the front and rear end portions of the case body 12A, the case 12 can travel by the rotational movement of the rollers 20, 20. Thereby, the case 12 can travel more smoothly.

<< Fourth embodiment >>
The first to third embodiments are the retracting device 1 attached to the sliding door type sliding door, while the fourth embodiment shown in FIG. It is the drawing-in apparatus 1 attached to sliding door 2 'which is run-guided along.

  The retracting device 1 according to the present embodiment includes a retracting device main body 10 installed in an embedded state on the upper end surface of the sliding door 2 ′, and an engagement pin fixed in a state of protruding downward from the head portion of the door frame. 11. The embedded state of the retracting device main body 10 in the sliding door 2 ′ is such that the upper end portion of the slider 15 provided in a protruding state from the case 12 does not protrude from the upper end surface of the sliding door 2 ′. Further, in the retracting device 1 according to this embodiment, the runner locking portion 12B is not necessary as the case 12, and the case 12 is constituted only by the case main body 12A.

<< Fifth embodiment >>
The retracting device 1 according to the fifth embodiment is a form suitable for retrofitting an existing sliding door. Specifically, as shown in FIG. 14, the retracting device main body 10 is installed at a position adjacent to the sliding door 2 ′ with respect to the doorhead 6 </ b> A of the door frame, and the engagement pin 11 is the upper end in the plane of the sliding door 2 ′. It is fixed in a protruding state toward the main body of the retracting device. As described above, in this embodiment, the groove processing for embedding the retracting device main body 10 in the upper end surface of the sliding door 2 ′ is not necessary, and retrofitting to the existing sliding door is facilitated.

  In the example shown in FIG. 14, the retracting device main body 10 is attached to the door frame head 6 </ b> A and the engaging pin 11 is attached to the upper end of the sliding door 2 ′, but the retracting device main body 10 is attached to the door frame sill 6 </ b> B. You may make it attach the attachment engaging pin 11 to the lower end part of sliding door 2 '.

  FIG. 14 is an illustration in the case where the door fixed to the lower end is attached to the sliding door 2 ′ that is guided to travel along the door rail, but is similarly attached to the above-described sliding door type sliding door 2 as well. Is possible.

  DESCRIPTION OF SYMBOLS 1 ... Retracting device, 2.2 '... Sliding door, 3A ... Upper arm, 3B ... Lower arm, 3C, 3D ... Vertical shaft, 4 ... Upper guide rail, 5 ... Lower guide rail, 6 ... Door frame, 6A ... Kamoi, 6B: Sill, 6C, 6D ... Side frame, 7 ... Panel, 8 ... Suspended car runner device, 9 ... Lower runner, 10 ... Retracting device body, 11 ... Engagement pin, 12 ... Case, 13 ... Slide guide groove, 14a ... Base end side engaging protrusion, 14 b... Tip end side engaging protrusion, 15... Slider, 15 c... Base end side engaging piece, 15 e. K ... Temporary stop

Claims (6)

It consists of a retracting device main body installed on the sliding door or the door frame, and an engagement pin fixed to the door frame or the sliding door in a protruding state toward the retracting device main body,
The retracting device main body is provided so as to be slidable along the opening / closing direction of the sliding door in the case, and has an engaging protrusion that engages with a slide guide groove formed in the case, and an upper end portion of the case A slider provided in a projecting state and engaged with and disengaged from the engaging pin, a piston damper provided in the case with a piston tip connected to the slider, and one end locked to the slider And the other end is locked to the case, and is constituted by a spring member that gives the slider a biasing force in the retracting direction of the sliding door,
On the sliding door end side of the slide guide groove, a temporary stop portion formed of a bent guide groove is formed continuously from the slide guide groove,
The slider engages with the engaging pin in accordance with the opening operation of the sliding door and moves the slider to the sliding door end side against the biasing force of the spring member, and the sliding door end side of the sliding guide groove In this case, the engagement protrusion of the slider is guided to the bent guide groove side to swing the slider to a temporary stop state, and the engagement with the engagement pin is released accordingly. When the sliding door is closed, the tip end side engaging piece and the engaging pin are engaged by releasing the temporary stop state by swinging the slider in the temporary stop state by engaging with the engaging pin. A sliding door retracting device, wherein the sliding door is retracted to a closed position by a biasing force of the spring member while receiving a braking force from the piston damper when the sliding door is closed. There is,
The front end side engaging piece elastically deforms a part of the front end side engaging piece so as to be able to get over the engaging pin when the slider is not temporarily stopped during the closing operation of the sliding door. Is retractable into the case.   The sliding door retracting device according to claim 1, wherein at least the distal end side engaging piece is formed of a resin material that is elastically deformable.   The front end side engaging piece includes a folded portion folded back in a horizontal letter shape from the front end portion of the slider, a drooping piece extending downward from the front end, and a horizontal direction at the front end of the drooping piece. And a horizontal locking piece that engages with the slider body, and an upper end of the folded portion can be immersed in the case by elastic deformation. Sliding door retracting device. The sliding door is a suspension door in which a suspended runner type runner device fixed to the upper end of the sliding door is guided to travel along a guide rail fixed to the duck of the door frame,
The pull-in device main body is provided slidably in the guide rail by providing a runner locking portion that can be locked to the suspension-wheel-type runner device integrally or separately with respect to the pull-in device main body, The sliding door retracting device according to any one of claims 1 to 3, wherein the engaging pin is fixed to the inner surface of the guide rail in a protruding state. The sliding door is a sliding door in which a doorwheel fixed to a lower end is guided to travel along a door rail,
The said drawing-in apparatus main body is installed in the embedding state in the upper end surface of the said sliding door, The said engagement pin is fixedly installed in the state made to protrude in the downward part to the duck part of a door frame. Sliding door retractor.   The retracting device for a sliding door according to any one of claims 1 to 3, wherein the retracting device main body is installed in a duck or a sill of a door frame, and the engaging pin is fixed to the sliding door.

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