JP2009144363A - Sliding door retracting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sliding door retracting device, eliminating the state of forgetting to close the door in the vicinity of the door closing side, and fitted to an existing sliding door after its construction, and reduced in size. <P>SOLUTION: This sliding door retracting device includes: a locking member fitted to a frame body; a sliding member displaceable in the opening and closing of the sliding door; a guide member fitted to the sliding door and supporting the sliding member; a spring force accumulator having a rotating member engaging with the sliding member to be rotated, which is adapted to accumulate the spring energizing force by the rotation and energize the sliding member in the opening direction of the sliding door; a trigger member rotatably fitted to the sliding member and including an engagement part having a pair of engaging elements engaged with the locking member; and a trigger rotation preventing member, which is fitted to the sliding door, slidably engages with the trigger member until the sliding door is opened to a predetermined position to disable rotation, and has a rotation preventing surface for retaining the state where the engagement part engages with the locking member. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sliding door retracting device that automatically closes an opened sliding door to a predetermined closed state.

  When manually opening and closing the sliding door, even if you try to close the sliding door to the fully closed state, the sliding door may not be completely closed due to insufficient force or conversely too strong force. Sometimes it was open.

  For this reason, various sliding door retracting devices have been proposed and used that automatically pull the sliding door to the complete closed position when it is pulled to a predetermined position when closing the sliding door.

However, the conventional sliding door retracting device has a problem that the size of the device increases because it is necessary to provide a wire rope and a rack in the entire opening / closing region of the sliding door (for example, JP-A-11-159237). Moreover, since the apparatus proposed conventionally accommodates members, such as a wire rope and a rack, in the inside of a sliding door, it is necessary to attach at the time of manufacture of a sliding door, and it can attach simply after constructing a sliding door. There has been a demand for the development of a retractor.
JP-A-11-159237

  Accordingly, the present invention provides a sliding door retracting device that can eliminate the state of forgetting to close in the vicinity of the closing side of the sliding door, and can be attached to a ready-made sliding door even after the construction, and can reduce the size of the device. The purpose is to do.

That is, the present invention (hereinafter referred to as “the first invention” refers to this invention)
A sliding door retracting device (1) for automatically closing a sliding door (3) attached to a frame (hereinafter described with reference numeral 2 in the embodiment) so as to be freely opened and closed,
A locking member (10) attached to the frame (2);
A slide member (20) displaceable in the opening and closing direction of the sliding door (3);
A guide member (30) attached to the sliding door (3) and supporting the slide member (20) so as to be movable in the opening and closing direction;
A spring force storage device (40) attached to the sliding door (3), which engages with the slide member (30), and the spring force storage device (40) against the slide member (20). A rotating member (42) that is rotated by being relatively displaced in the opening direction of the sliding door (3), and a spring biasing force is accumulated by the rotation of the rotating member (42), and the slide member (20 ) In the opening direction of the sliding door (3) relative to the spring force storage device (40), and a spring force storage device (40)
A trigger member (50) rotatably attached to the slide member (20), and when the sliding door (3) is in the closed position, on both sides of the locking member (10) in the opening / closing direction. A trigger member (50) having an engaging portion (53) comprising a pair of engaging elements (52) extending so as to be positioned adjacent to each other;
A trigger rotation preventing member (30-1) attached to the sliding door (3), which extends in the opening and closing direction and slides on the trigger member (50) until the sliding door (3) is opened to a predetermined position. An anti-rotation surface that keeps the engagement portion (53) of the trigger member (50) engaged with the locking member (10) by disengaging it and making it impossible to rotate (implementing) Trigger rotation prevention member (30-1) having a reference numeral 61 in the description of the embodiment;
Have
When the sliding door (3) is opened to the predetermined position, the rotation preventing surface (61) of the trigger rotation preventing member (30-1) is detached from the trigger member (50) and rotates the trigger member (50). When the sliding door (3) is opened beyond the predetermined position, the trigger member (50) engaged with the locking member (10) is rotated to a predetermined rotation position, and the When the engagement with the locking member (10) is released and the sliding door (3) is further opened, a biasing force in the opening direction of the sliding door (3) from the rotating member is applied to the slide member (20). In this state, the trigger member (50) is brought into contact with the end of the trigger rotation preventing member (30-1) (denoted by reference numeral 62 in the description of the embodiment), and the slide member (20 ) Is moved with the sliding door (3) and the sliding door (3) is closed The locking member (10) is received between the pair of engagement elements (52) of the trigger member (50) when moved in the direction and approached to the predetermined position, and when further returned, the trigger member (50). ) Is engaged with the locking member (10) and the trigger member (50) is rotated, so that the trigger member (50) is brought into contact with the rotation preventing surface (61). The rotating member (42) of the spring force accumulating device (40) is placed on the slide member (20) that is engaged and stopped in the opening and closing direction, and thereby stopped in the opening and closing direction. The present invention provides a sliding door retracting device that is rotated by the biasing force to return the sliding door (3) to the closed position.

The present invention (hereinafter referred to as “the second invention” refers to this invention)
A sliding door retracting device (1) for automatically closing a sliding door (3) attached to the frame (2) so as to be freely opened and closed,
A locking member (10) attached to the sliding door (3);
A slide member (20) displaceable in the opening and closing direction of the sliding door (3);
A guide member (30) attached to the frame (2) and supporting the slide member (20) so as to be movable in the opening and closing direction;
A spring force storage device (40) attached to the frame (2), which engages with the slide member (20), and the spring force storage device (40) is attached to the slide member (20). On the other hand, the rotating member (42) is rotated by being relatively displaced in the closing direction of the sliding door (3), the spring biasing force is accumulated by the rotation of the rotating member (42), and the sliding member ( A spring force energy storage device (40) for urging 20) relative to the spring force energy storage device (40) in the closing direction of the sliding door (3);
A trigger member (50) rotatably attached to the slide member (20), and when the sliding door (3) is in the closed position, on both sides of the locking member (10) in the opening / closing direction. A trigger member (50) having an engaging portion (53) comprising a pair of engaging elements (52) extending so as to be positioned adjacent to each other;
A trigger rotation preventing member (30-1) attached to the frame (2), which extends in the opening / closing direction and slides on the trigger member (50) until the sliding door (3) is opened at a predetermined position. An anti-rotation surface that maintains the state in which the engaging portion (53) of the trigger member (50) is engaged with the locking member (10) by disengageably movably engaging it. Trigger rotation prevention member (30-1) having a reference numeral 61 in the description of the embodiment;
Have
When the sliding door (3) is opened to the predetermined position, the rotation preventing surface (61) of the trigger rotation preventing member (30-1) is detached from the trigger member (50) and rotates the trigger member (50). When the sliding door (3) is opened beyond the predetermined position, the trigger member (50) engaged with the locking member (10) is rotated to a predetermined rotation position, and the When the engagement with the locking member (10) is released and the sliding door (3) is further opened, the sliding member (20) is attached to the sliding door (3) in the closing direction from the rotating member (42). With the force applied, the trigger member (50) is brought into contact with the end of the trigger rotation preventing member (30-1) (denoted by reference numeral 63 in the description of the embodiment), and the slide The member (20) is moved together with the sliding door (3) and the sliding door (3 Is moved in the closing direction to approach the predetermined position, the locking member (10) is received between the pair of engaging elements (52) of the trigger member (50), and when further returned, the trigger member When the engagement portion (53) of (50) is engaged with the locking member (10) and the trigger member (50) is rotated, the trigger member (50) is rotated against the anti-rotation surface (61). ) To be movable in the opening and closing direction, and the rotating member (42) of the spring force accumulating device (40) is moved on the slide member (20) movable in the opening and closing direction. The present invention provides a sliding door retracting device that is rotated by an urging force to return the sliding door (3) to the closed position.

  By being configured in this manner, the sliding door is automatically closed when the sliding door is pulled back to a predetermined position, so that it is not left forgotten to close. Further, the sliding door retracting apparatus of the present invention does not require a wire or the like over the entire width of the sliding door, so that the apparatus can be miniaturized. Furthermore, since it is not necessary to install in the inside of a sliding door, it can install even after constructing a sliding door.

  The rotating member (42) is a pinion, and the slide member (20) is a rack member engaged with the pinion.

  The trigger rotation preventing member (30-1) is a linear member extending in the opening / closing direction, and the trigger member (50) has a groove (54) engaged with the linear member.

  By configuring as described above, it is possible to further reduce the size of the apparatus.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a sliding door retracting apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

  First, based on FIGS. 1-4, embodiment of the sliding door drawing-in apparatus of 1st invention is described.

  The sliding door retracting device 1 includes a locking member 10 attached to the frame body 2, a guide member 30 attached to the sliding door 3, a slide member 20 slidably attached to the guide member, and a spring force accumulating device. 40.

  The locking member 10 has a columnar shape, and is provided in a substantially central portion in the width direction of the frame body 2 so as to protrude toward the sliding door 3 side.

  The guide member 30 is long and is provided near the upper edge 3a of the sliding door 3 in parallel with the upper edge. Specifically, as will be described later, the spring force accumulating device 40 is housed and fixed to the casing 4 fixed to the sliding door by screws 5. The guide member 30 has an upper plate portion 30-1 and a lower plate portion 30-2, and a horizontal support groove 31 for slidably supporting the slide member 20 is formed therebetween.

  The slide member 20 is a rack member, and as shown in FIG. 2, an upper half portion 22 having a rectangular cross section is fitted in a support groove 31 of the guide member 30 so as to be slidable in the opening / closing direction of the sliding door, A number of rack teeth 21 are formed on the lower surface of the upper half portion 22.

  The spring force accumulating device 40 is provided below the guide member 30, and as shown in FIG. 2, a shaft 41 that is horizontally attached to the casing 4 and a shaft 41 that is rotatably attached to the shaft 41. A pinion (rotating member) 42 that meshes with the rack teeth 21, a damper 43 that is provided coaxially with the pinion 42 and brakes the rotation of the pinion 42, and a spring spring 44 that is wound coaxially with the pinion 42. Become.

  More specifically, the shaft 41 is rotatably attached to the casing 4, and a case cover 47 having a center side spring fixing portion 47 a is fixed so as to rotate integrally with the shaft 41. The pinion 42 is provided with an outer side spring fixing portion 42 a, has a spring case portion 42 b that accommodates the spring, and is integrated with a pipe 46 that is rotatably attached to the shaft 41 on the outer periphery of the shaft 41. It is fixed to rotate. One end of the spring spring 44 is fixed to the center side spring fixing part 47a, and the other end is fixed to the outer side spring fixing part 42a. The case cover 47 is provided with a hexagonal convex portion 47b at the center thereof so as to surround the shaft 41. A U-shaped spring retainer 45 is installed on the surface side of the casing 4 (the side exposed without contacting the sliding door) across the hexagonal opposite side of the convex portion 47b. The spring 41 is pressed to suppress the rotation of the case cover 47 and the shaft 41 is prevented from rotating. If necessary, the set weight of the mainspring spring 44 can be appropriately changed by removing the spring pressing member 45 and rotating the case cover 47.

  The mainspring spring 44 is wound by the pinion 42 being displaced and rotated relative to the slide member 20 in the opening direction of the sliding door 3, and accumulates the spring biasing force. As a result, the slide member 20 is biased relative to the spring force accumulator 40 in the opening direction of the sliding door 3.

  In the present embodiment, a damper having a one-way clutch 48 using the viscous resistance of oil is used as the damper 43. However, as such a damper, those normally used in this type of device can be used without any particular limitation. . In the present embodiment, by having the damper 43, the door traveling speed at the time of the sudden closing door can be reduced to a safe speed.

  A trigger member 50 is rotatably attached to the slide member 20 at the center in the longitudinal direction. The trigger member 50 is attached to the center of the slide member 20 in the longitudinal direction. When the door is closed, the pinion 42 meshes with the rack tooth 21 at the right end of the slide member 20, and the engaging portion 53 of the trigger member 50 is engaged with the locking member 10. When not engaged, the pinion 42 meshes with the rack tooth 21 at the left end of the slide member 20.

  The trigger member 50 is rotatably attached to a rotating shaft 51 attached to the slide member 20 and has an engaging portion 53 including an arm 52 as a pair of engaging elements. The arm 52 is positioned adjacent to both sides in the opening / closing direction of the locking member 10 when the sliding door 3 is in the closed position.

  The trigger member 50 has a groove 54 that is slidably engaged with the upper plate portion 30-1 of the guide member 30 as a trigger rotation preventing member. The groove 54 engages with the upper plate portion 30-1 until the sliding door 3 is opened at a predetermined position, and the trigger member 50 cannot be rotated by the action of the rotation preventing surface 61 in the upper plate portion 30-1. To do. One end 54a of the groove 54 is tapered.

  The sliding door retracting apparatus 1 of the present embodiment operates as follows. That is, as shown in FIGS. 1, 3 and 4, when the sliding door 3 is opened, the guide member 30 and the spring force energy storage device 40 attached to the sliding door 3 move in the opening direction together with the sliding door 3. At this time, the slide member 20 moves because the groove 54 is engaged with the upper plate portion 30-1 of the guide member and the engaging portion 53 of the trigger member 50 is engaged with the locking member 10. do not do. Therefore, the pinion 42 engaged with the rack teeth 21 of the slide member 20 rotates, and the spring force that moves the slide member 20 in the opening direction of the sliding door 3 is stored in the spring force storage device 40. .

  If the opening is further advanced and the sliding door 3 is opened to a predetermined position, the right end of the upper plate portion 30-1 of the guide member 30 comes out of the groove 54 of the trigger member 50 as shown in FIG. 50 can be rotated clockwise. At this time, the spring force storage device 40 stores a force that moves the slide member 20 in the opening direction of the sliding door 3. Therefore, when the sliding door is further opened, the sliding member 20 together with the guide member 30 slides the sliding door 3. Therefore, the trigger member 50 engaged with the locking member 10 is rotated in the clockwise direction, and the engagement with the locking member 10 is released. When the sliding door 3 is further opened, as shown in FIG. 4, the trigger member 50 is the upper plate portion of the guide member while the sliding member 20 is biased in the opening direction of the sliding door 3 from the pinion 42. The rotation is stopped by engaging the end 62 of 30-1. That is, the arm 52 is maintained at an angle released from the locking member 10.

  Further, when the sliding door 3 is moved in the closing direction from the opened state and approaches a predetermined position, the locking member 10 is received between the pair of arms 52 and 52 of the trigger member 50 as shown in FIG. When returned further, the engaging portion 53 of the trigger member 50 is engaged with the locking member 10 and the trigger member 50 is rotated. As a result, the outer peripheral portion of the trigger member 50 is disengaged from the right end portion 62 of the upper plate portion 30-1 of the guide member, and the right end portion 62 is guided to the groove 54 by the guide portion 55 of the trigger member 50. In this state, the trigger member 50 can no longer rotate with respect to the guide member 30, and therefore the movement is stopped by the locking member 10 in the opening / closing direction of the sliding door 3. Therefore, the pinion 42 is rotated on the stopped slide member 20 as the rack member by the urging force of the spring force accumulating device 40, and thereby the sliding door 3 is returned to the closed position.

  Next, another embodiment of the present invention (first invention) will be described with reference to FIGS. In the following description, the same members and the like as those in the above-described embodiment are denoted by the same reference numerals, description thereof is omitted, and different portions are mainly described.

  This embodiment is different from the above embodiment in the following points.

  That is, the sliding door retracting apparatus 1 ′ according to the present embodiment does not include the support groove 31 in the guide member 30, and slides so as to cover the entire slide member 20 and trigger member 50 as shown in FIGS. It differs from the above-mentioned embodiment by the point which is set as the structure which supports the member 20, and the point which is set as the damper 43 brakes the rotation of the separate pinion engaged with the pinion 42. FIG.

  Since the guide member 30 in the present embodiment covers the rack teeth 21 of the slide member 20, the portion of the guide member 30 that covers the rack teeth 21 is notched in the portion where the rack teeth 21 and the pinion 42 are engaged. Yes. Moreover, the recessed part 32 is provided in the position corresponding to the edge part 62 of the upper board part 30-1 in a guide member so that the trigger member 50 can rotate.

  Next, an embodiment of the present invention (second invention) will be described. In the following description, the same members and the like as those of the first embodiment described above are denoted by the same reference numerals, description thereof is omitted, and different portions are mainly described.

  The sliding door retracting device 101 of the present embodiment is the above-mentioned first in that the locking member 10 is attached to the sliding door 3 and the guide member 30 and the spring force energy storage device 40 are attached to the frame body 2. Different from the embodiment of the invention. The configuration other than these points is the same.

  And in the sliding door retracting apparatus 1 of this embodiment, an effect | action differs from embodiment of the above-mentioned 1st invention.

  That is, when the sliding door 3 is opened, the locking member 10 moves together with the sliding door 3. Since the locking member 10 is engaged with the engaging portion 53 of the trigger member 50 and the groove 54 is engaged with the upper plate portion 30-1 as the trigger rotation preventing member, the slide member 20 is the trigger member. 50 and move toward the opening direction of the sliding door 3. Here, “upper part” and “lower part” mean that the pinion side is “lower part” and the rack side is “upper part” when the rack side is viewed from the pinion side.

  When the sliding door 3 is opened to a predetermined position, the groove 54 reaches the left end portion 62 of the upper plate portion 30-1, and the trigger member 50 comes off from the end portion 62 of the upper plate portion 30-1. 50 rotates clockwise. At this time, the force that moves the slide member 20 in the closing direction of the sliding door 3 is stored in the spring force storage device 40. Therefore, when the sliding door is further opened, the engagement state between the locking member 10 and the trigger member 50 is completely released, and a biasing force in the opening direction of the sliding door 3 from the pinion 42 is applied to the slide member 20. In this state, the trigger member 50 is brought into contact with the end portion 62 of the upper plate portion 30-1, and the rotation of the trigger member 50 is stopped. Further, when the sliding door 3 is opened, the locking member 10 moves alone with the movement of the sliding door 3.

  When closing the sliding door 3, when the sliding door 3 is pulled back to a predetermined position, the locking member 10 is engaged with the engaging portion 53. When the trigger member 50 is further pulled back from the predetermined position, the left end 62 of the upper plate 30-1 is guided to the groove 54 by the guide 55. Accordingly, the upper plate portion 30-1 is engaged with the groove 54 of the trigger member 50, and the trigger member 50 can move in the closing direction of the sliding door 3. As a result, the slide member 20 can be moved, and the slide member 20 is moved in the closing direction of the sliding door 3 by the biasing force of the pinion 42. Accordingly, the sliding door 3 to which the locking member 10 is attached is pulled back to the closed position. Is pulled back to the closed position.

  The present invention is not limited to this embodiment, and various modifications can be made without departing from the spirit of the present invention.

  For example, the slide member and the rotation member can be configured by a member that can be engaged by friction, instead of the rack member and the pinion. Moreover, although the example which provided the pinion in parallel with the sliding door was demonstrated, it can also be set as the aspect installed in the direction perpendicular | vertical with respect to a sliding door.

FIG. 1 is an internal perspective front view showing an embodiment of a sliding door retracting device of the present invention (first invention). 2 is a cross-sectional view taken along line AA in FIG. FIG. 3 is an internal perspective front view showing the sliding door retracting device when the sliding door is opened to a predetermined position from the state shown in FIG. FIG. 4 is an internal perspective front view showing a state where the sliding door is further opened from the state of FIG. 3. FIG. 5 is an internal perspective front view showing another embodiment of the present invention (first invention). 6 is a cross-sectional view taken along line BB in FIG. 7 is a cross-sectional view taken along the line CC of FIG. FIG. 8 is an internal perspective front view showing the sliding door retracting device when the sliding door is opened to a predetermined position from the state shown in FIG. FIG. 9 is an internal perspective front view showing one embodiment of the sliding door retracting apparatus of the present invention (second invention).

Explanation of symbols

Sliding door retracting device 1: Frame 2: Locking member 10: Sliding door 3: Casing 4: Screw 5: Guide member 30: Spring force accumulating device 40: Edge 3a: Support groove 31: Slide member 20: Rack tooth 21: Fitting convex portion 22: shaft 41: pinion 42: damper 43: mainspring spring 44 :: outward spring fixing portion 42a: spring case portion 42b: spring presser 45: pipe 46: case cover 47: central spring fixing portion 47a: Trigger member 50: Rotating shaft 51: Arm 52: Engaging portion 53: Upper plate portion 30-1: Anti-rotation surface 61: Groove 54: Guide portion 55

Claims (4)

A sliding door retracting device for automatically closing a sliding door attached to the frame so as to be freely opened and closed,
A locking member attached to the frame;
A sliding member displaceable in the opening / closing direction of the sliding door;
A guide member attached to the sliding door and supporting the slide member so as to be movable in the opening and closing direction;
A spring force energy storage device attached to the sliding door, wherein the spring force energy storage device is engaged with the slide member, and the spring force energy storage device is rotated by being displaced relative to the slide member in the sliding door opening direction. A spring force accumulator that accumulates a spring urging force by rotation of the rotating member, and urges the slide member relative to the spring force accumulating device in the opening direction of the sliding door. Equipment,
A trigger member rotatably attached to the slide member, and comprising a pair of engagement elements located adjacent to both side portions in the opening / closing direction of the locking member when the sliding door is in the closed position A trigger member having an engagement portion;
A trigger rotation preventing member attached to the sliding door, which extends in the opening and closing direction and slidably engages with the trigger member until the sliding door is opened at a predetermined position, thereby preventing rotation. A trigger rotation preventing member having a rotation preventing surface that holds the engagement portion of the trigger member engaged with the locking member;
Have
When the sliding door is opened to the predetermined position, the rotation preventing surface of the trigger rotation preventing member is disengaged from the trigger member so that the trigger member can be rotated, and the sliding door is opened beyond the predetermined position, thereby When the trigger member engaged with the locking member is rotated to a predetermined rotation position, the engagement with the locking member is released, and the sliding door is further opened, the sliding member is moved to the rotating member. The trigger member is brought into contact with the end of the trigger rotation preventing member in a state where a biasing force in the opening direction of the sliding door is applied from the sliding door, and the sliding member is moved together with the sliding door, and the sliding door is closed. The locking member is received between the pair of engaging elements of the trigger member when moved in the direction and approached to the predetermined position, and the engaging portion of the trigger member is engaged with the locking member when returned further. Combined with the trigger member By being moved, the trigger member is engaged with the rotation-preventing surface and the movement in the opening / closing direction is stopped, and thus the spring force accumulation is performed on the slide member stopped in the opening / closing direction. A sliding door retracting device in which the rotating member of the device is rotated by the biasing force to return the sliding door to the closed position. A sliding door retracting device for automatically closing a sliding door attached to the frame so as to be freely opened and closed,
A locking member attached to the sliding door;
A sliding member displaceable in the opening / closing direction of the sliding door;
A guide member attached to the frame and supporting the slide member so as to be movable in the opening and closing direction;
A spring force accumulating device attached to the frame, wherein the spring force accumulating device is engaged with the slide member, and the spring force accumulating device is rotated by being displaced relative to the slide member in the closing direction of the sliding door. A spring member for storing the spring biasing force by rotating the rotary member, and biasing the slide member relative to the spring force storage device in the closing direction of the sliding door. Power device,
A trigger member rotatably attached to the slide member, and comprising a pair of engagement elements located adjacent to both side portions in the opening / closing direction of the locking member when the sliding door is in the closed position A trigger member having an engagement portion;
A trigger rotation preventing member attached to the frame, which extends in the opening and closing direction and slidably engages with the trigger member until the sliding door is opened at a predetermined position, thereby disabling rotation. A trigger rotation preventing member having a rotation preventing surface for holding the engagement portion of the trigger member engaged with the locking member;
Have
When the sliding door is opened to the predetermined position, the rotation preventing surface of the trigger rotation preventing member is disengaged from the trigger member so that the trigger member can be rotated, and the sliding door is opened beyond the predetermined position, thereby When the trigger member engaged with the locking member is rotated to a predetermined rotation position, the engagement with the locking member is released, and the sliding door is further opened, the sliding member is moved to the rotating member. The trigger member is brought into contact with the end of the trigger rotation preventing member in a state where the urging force in the closing direction of the sliding door is applied, and the sliding member is moved together with the sliding door, and the sliding door is closed. The locking member is received between the pair of engaging elements of the trigger member when moved in the direction and approached to the predetermined position, and the engaging portion of the trigger member is engaged with the locking member when returned further. Combined with the trigger member By being moved, the trigger member is engaged with the rotation preventing surface and can move in the opening and closing direction, and thus the slide member that is movable in the opening and closing direction is moved on the slide member. A sliding door retracting device in which a rotating member is rotated by the biasing force to return the sliding door to a closed position.   The sliding door retracting device according to claim 1 or 2, wherein the rotating member is a pinion, and the slide member is a rack member engaged with the pinion.   The sliding door retracting device according to any one of claims 1 to 3, wherein the trigger rotation preventing member is a linear member extending in the opening and closing direction, and the trigger member has a groove engaged with the linear member.

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