JP2020105774A - Operation member of pull-in device of sliding door - Google Patents

Abstract

To provide an operation member of a pull-in device of a sliding door capable of suppressing a collision noise at a start of operation of the device.SOLUTION: An operation member 3 of the pull-in device of the sliding door, mounted on one of the sliding door and a door frame, which operates a device body by engaging with a hook 11 on the device body mounted on the other of the sliding door and the door frame to guide the sliding door to a second position when the sliding door is in a first position, includes an engaging protrusion 25 which engages with the hook 11. The engaging protrusion 25 has an asymmetrical structure in which a first lateral face 25a with which the hook 11 contacts when the sliding door is in the first position is more easily deformable than a second lateral face 25b on an opposite side of the first lateral face 25a.SELECTED DRAWING: Figure 14

Description

The present invention relates to an actuating member in a retracting device for retracting a sliding door to a predetermined position.

A sliding door retractor is a sliding door that is automatically retracted to a closed position when the sliding door is closed from an open position to a predetermined position, or when the sliding door is opened from a closed position to a predetermined position. Is used to automatically retract and open to the open position.

In the retracting device of Patent Document 1 below, the device body is installed at the upper end of the sliding door, and the engaging pin is installed at a predetermined position of the door frame. For example, when closing the sliding door, when the sliding door reaches a predetermined position, the operation cam of the apparatus main body engages with the engagement pin. The device body is provided with a spring that biases the actuating cam toward the side of the door. The actuating cam engaged with the engaging pin moves to the rear side of the apparatus body together with the engaging pin by the urging force of the spring. That is, the sliding door is pulled toward the door tip side together with the apparatus body by the urging force of the spring. In such a retracting device, the operating cam engages with the engaging pin to operate the device body, and the sliding door is retracted.

By the way, such a sliding door may be vigorously closed depending on the usage. When the sliding door is strongly operated to the closing side, the actuating cam moving to the closing side together with the sliding door violently collides with the engagement pin, and at that time, a large collision sound is generated. In particular, in a usage situation where a quiet environment is required such as in a hospital, it is required to suppress such collision sound.

JP, 2007-278057, A

An object of the present invention is to provide an operating member of a retracting device for a sliding door that can suppress a collision noise when the operation of the device is started.

The operating member of the sliding door retracting device according to the present invention is attached to one of the sliding door and the door frame, and is attached to the other of the sliding door and the door frame when the sliding door comes to the first position. An engaging member of a retracting device for a sliding door, which operates the device main body by engaging with the hook in the above, and guides the sliding door to a second position, the engaging convex portion engaging with the hook. The convex portion has an asymmetric structure in which the first side surface with which the hook abuts when the sliding door comes to the first position is more easily deformable than the second side surface opposite to the first side surface.

An example of guiding the sliding door to the closed position by the retracting device will be described. For example, the device body is attached to a sliding door, and the operating member is attached to a door frame. The operating member is attached to a predetermined position before the closed position. The engaging convex portion of the actuating member has a structure that is asymmetric in the opening/closing direction of the sliding door, and the first side surface thereof deforms more easily than the second side surface. When the sliding door is strongly closed, the hook of the apparatus body collides with the first side surface of the engaging projection of the actuating member. At the time of the collision, the first side surface of the engaging convex portion is easily deformed to reduce the impact at the time of the collision. On the other hand, when the hook engages with the engagement protrusion, the device body operates, and the second side surface of the engagement protrusion is pushed toward the first side surface by the hook. Since the second side surface of the engaging convex portion is less likely to be deformed than the first side surface, the hook is not disengaged from the engaging convex portion, the engaging state between the hook and the engaging convex portion is reliably maintained, and the sliding door is at the closed position. Is surely guided until.

In particular, the engaging protrusion has a core made of a hard material and a cover made of a soft material covering the outside of the core, and the core is biased toward the second side surface side. preferable. According to the actuating member having this structure, since the engaging protrusion has the cover portion made of a soft material, the impact when the hook collides with the first side surface of the engaging protrusion is mitigated by the cover portion. , The collision noise is suppressed. On the other hand, since the core portion made of a hard material is provided inside the cover portion, a firm engagement state can be obtained between the hook and the engagement protrusion. Since the core portion is biased toward the second side surface side with respect to the center between the first side surface and the second side surface, it is possible to enhance the silencing effect of the first side surface of the engaging convex portion and at the same time The strength and rigidity of the second side surface of the compound convex portion can be easily secured.

Furthermore, it is preferable that the engaging convex portion has a hollow portion between the core portion and the first side surface. By providing the hollow portion in this way, the first side surface can be largely deformed toward the second side surface, and the sound deadening effect can be further enhanced.

As described above, since the first side surface of the engaging convex portion is easily deformed and the second side surface is not easily deformed, when a collision with the hook is ensured while ensuring a reliable engagement state with the hook. The collision sound of can be suppressed. Particularly, it is suitable for use in a quiet environment such as a hospital.

It is a principal part front view which shows the sliding door which used the operating member of the retractor in one Embodiment of this invention, (a) showed the fully open state, (b) showed the state closed to the predetermined position, (c) ) Indicates a fully closed state. The perspective view of the operation member. The exploded perspective view of the operation member. Sectional drawing of the same operating member. FIG. The disassembled sectional view of the engagement block of the actuating member. The principal part schematic diagram which shows the use condition of the drawing device. The principal part schematic diagram which shows the use condition of the drawing device. The principal part schematic diagram which shows the use condition of the drawing device. The principal part schematic diagram which shows the use condition of the drawing device. The principal part schematic diagram which shows the use condition of the drawing device. The principal part enlarged view which shows the use condition of the retractor. The principal part enlarged view which shows the use condition of the retractor. The principal part enlarged view which shows the use condition of the retractor. The principal part enlarged view which shows the use condition of the retractor.

Hereinafter, a retracting device for a sliding door according to an embodiment of the present invention will be described with reference to FIGS. 1 to 15. FIG. 1 shows the entire structure of a sliding door 1 to which a retracting device according to this embodiment is attached. The retracting device includes an actuating member 3 and a device body 4. The operating member 3 is attached to one of the sliding door 1 and the door frame 2, and the device body 4 is attached to the other of the sliding door 1 and the door frame 2. In this embodiment, the operation member 3 is attached to the door frame 2 and the apparatus body 4 is attached to the sliding door 1, but the reverse attachment mode may be used. Further, in the present embodiment, the retracting device is used to guide the sliding door 1 to the fully closed position when the sliding door 1 is closed, but in order to guide the sliding door 1 to the fully open position when the sliding door 1 is opened. May be used. Hereinafter, the opening/closing direction of the sliding door 1 will be referred to as the left-right direction, and the direction in which the front and back surfaces of the sliding door 1 face each other will be referred to as the front-back direction.

<Device body 4>
The device body 4 is attached to the upper surface of the sliding door 1. The device body 4 has a long shape along the left-right direction. As shown in FIG. 7, the device body 4 includes a case 10, a hook 11, a slider 12, a damper (not shown), and a first spring 13. The hook 11, the slider 12, the damper, and the first spring 13 are housed in the case 10. The case 10 has a shape that is long in the left-right direction, and a main portion thereof is formed in a substantially U shape in which a cross section orthogonal to the longitudinal direction opens upward. That is, the main part of the case 10 has a front side wall, a rear side wall, and a bottom wall. Guide grooves are formed in both front and rear walls of the case 10. The guide groove includes a linear groove portion 14a that extends linearly in the left-right direction, and a locking groove portion 14b that bends downward from one end of the linear groove portion 14a and extends continuously.

The slider 12 slides in the case 10 along the left-right direction. The slider 12 includes a pair of guide protrusions 15 that engage with the linear groove portions 14a of the guide grooves and slide along the linear groove portions 14a. The hook 11 is located on the door end side with respect to the slider 12. The hook 11 is rotatably supported by the slider 12. The hook 11 swings up and down about a support shaft 16 in the front-rear direction. The support shaft 16 is provided at the base end of the hook 11. Therefore, the base end of the hook 11 is pivotally supported by the slider 12. The hook 11 has an engaging recess 17 on the upper surface. The engagement recess 17 is open upward. The engaging convex portion 25 of the operating member 3 engages with the engaging concave portion 17. When the hook 11 is tilted downward, it is in a state of being disengaged from the engaging convex portion 25 of the operating member 3, and when the hook 11 is rotated upward and becomes substantially horizontal, the operating member 3 is inserted in the engaging concave portion 17. The engaging convex portion 25 of is engaged. Guide protrusions 18 that engage with the guide grooves are formed on both front and rear surfaces of the tip of the hook 11. A second spring 19 is provided between the hook 11 and the slider 12. The second spring 19 is a coil spring. The second spring 19 is weaker than the first spring 13. The second spring 19 biases the hook 11 toward the slider 12 side, that is, the door butt side. Therefore, the hook 11 is biased counterclockwise in FIG. 7, etc., and the hook 11 is biased in the direction of tilting downward. In the state where the hook 11 is tilted downward as shown in FIG. 12, the upper end portion 17a of the wall surface on the tip side of the engaging recess 17 is lower than the upper end 17b of the wall surface on the base end side of the engaging recess 17. Become.

The damper is a piston type, and its axial direction is the left-right direction. The damper is an oil-type damper, which gives a braking force by the movement resistance of the oil as the piston expands and contracts. The damper may be an air damper in which air is enclosed. The damper is located on the door end side with respect to the slider 12. The end of the piston of the damper on the door tip side is connected to the slider 12, and applies a braking force to the slider 12 when the slider 12 moves toward the door tail side by the urging force of the first spring 13. The first spring 13 is a coil spring. The first spring 13 is located on the door end side with respect to the slider 12. The end of the first spring 13 on the door tip side is locked to the slider 12, and the end of the first spring 13 on the door rear side is locked to the case 10. The first spring 13 applies a biasing force to the slider 12 in the retracting direction of the sliding door 1. That is, in the present embodiment, the first spring 13 biases the slider 12 toward the door tail side.

<Actuating member 3>
2 to 6 show the actuating member 3. The operating member 3 includes a mounting plate 20 and an engagement block 21. The upper surface of the engagement block 21 is attached to the lower surface of the attachment plate 20. The mounting plate 20 has a flat plate shape, and is preferably made of metal. The attachment plate 20 has a rectangular shape and is attached to the door frame 2 such that the long side direction thereof is along the opening/closing direction of the sliding door 1. The long side direction of the mounting plate 20 is the left-right direction, and the short side direction is the front-back direction. The mounting plate 20 has through holes 22 for screwing near both ends in the left-right direction. The mounting plate 20 is screwed to the upper part of the door frame 2 from below through a pair of through holes 22. The mounting plate 20 has a pair of through holes 23 for caulking at a position closer to the center than the pair of through holes 22.

<Engagement block 21>
The engagement block 21 has a flat plate-shaped base portion 24 and an engagement convex portion 25 protruding downward from the lower surface of the base portion 24. The base portion 24 has a rectangular shape with the left-right direction as the long side direction. The base portion 24 has crimping through holes 26a and 26b near both ends in the left-right direction. The length of the base portion 24 in the left-right direction is shorter than the length of the mounting plate 20 in the left-right direction. A pair of left and right through holes 22 for screwing the mounting plate 20 are located outside the base portion 24 in the left-right direction. The length of the base portion 24 in the front-rear direction is slightly shorter than the length of the mounting plate 20 in the front-rear direction. The engaging convex portion 25 is located at the center of the base portion 24 in the left-right direction, and the crimping through holes 26a, 26b are located symmetrically on both sides of the engaging convex portion 25 as the center. doing.

The engagement protrusion 25 is a portion of the engagement block 21 that engages with the hook 11. The engagement protrusion 25 extends substantially vertically downward with respect to the base portion 24. The engaging convex portion 25 has a rectangular shape in cross section, and specifically has a quadrangular prism shape. The engaging protrusion 25 is a rectangular prism that is long in the front-rear direction. The length in the front-rear direction of the engaging convex portion 25 is substantially equal to the length in the front-rear direction of the base portion 24. The amount of protrusion of the engagement protrusion 25 from the base 24, that is, the length of the engagement protrusion 25 in the vertical direction is shorter than the length of the engagement protrusion 25 in the left-right direction. The engagement protrusion 25 has four side surfaces. The engagement convex portion 25 has a first side surface 25a and a second side surface 25b facing each other in the left-right direction, and a third side surface 25c and a fourth side surface facing each other in the front-back direction. Each of the first side surface 25a and the second side surface 25b is a plane whose left-right direction is a substantially normal direction, and is substantially perpendicular to the lower surface of the base portion 24.

The engagement block 21 is fixed to the mounting plate 20 by two caulking pins 27. The caulking pin 27 is inserted through the caulking through holes 26 a and 26 b of the engagement block 21 and the caulking through hole 23 of the mounting plate 20. The crimp pin 27 is inserted from the engagement block 21 side. The head of the caulking pin 27 does not protrude downward from the lower surface of the base portion 24.

<Member structure of the engaging block 21>
The engagement block 21 includes a block body 30 and reinforcing materials 31 and 32. The block body 30 and the reinforcing members 31 and 32 are separate members, and are made of different materials. That is, the engaging block 21 is not a single material but a hybrid structure composed of a plurality of materials. The block body 30 is made of a soft material, and the reinforcing members 31 and 32 are made of a harder material than the block body 30. The block body 30 is preferably made of rubber, and the reinforcing members 31 and 32 are preferably made of metal. The block body 30 is formed by molding, for example. The reinforcing members 31 and 32 are made of sheet metal, for example.

The block body 30 constitutes a main part of the engagement block 21. The block main body 30 has a plate-shaped main body base portion 40, and a main body convex portion 41 that projects downward from the lower surface central portion of the main body base portion 40. The main body base portion 40 constitutes a main portion of the base portion 24 of the engagement block 21, and the main body convex portion 41 constitutes a main portion of the engagement convex portion 25 of the engagement block 21. The main body base portion 40 is formed with a pair of left and right through holes 26a for crimping. Further, locking holes 42 are formed in the vicinity of both left and right ends of the main body base portion 40.

A continuous main hole 43 is formed from the central portion of the main body base portion 40 to the main body convex portion 41. The main hole 43 penetrates the block body 30 in the vertical direction. The main hole 43 has a rectangular cross section, specifically, a rectangular cross section that is long in the front-rear direction and is similar to the cross section of the engaging projection 25. Since the main hole 43 having a rectangular cross section is formed in this manner, the main body convex portion 41 has a rectangular tubular shape. The main hole 43 is opened on the lower surface of the main body convex portion 41, that is, the lower surface of the engaging convex portion 25. The main hole 43 is located at the center of the main body convex portion 41. Since the main body convex portion 41 has the main hole 43, the main body convex portion 41 is composed of four side wall portions. That is, the main body convex portion 41 has the first side wall portion 44 having the first side surface 25a as the outer surface, the second side wall portion 45 having the second side surface 25b as the outer surface, and the third side surface 25c and the fourth side surface as the outer surfaces. It is composed of a third side wall portion 46 and a fourth side wall portion 47. Since the main hole 43 is located at the center of the main body convex portion 41, the thickness of the first side wall portion 44 and the thickness of the second side wall portion 45 are the same, and the thickness of the third side wall portion 46 and the fourth side wall portion 46 are the same. The side walls 47 have the same thickness. A reinforcing concave portion 48 is formed on the upper surface of the main body base portion 40. The reinforcing recess 48 is shallow and has a constant depth. Both left and right ends of the reinforcing recess 48 are continuous with the locking hole 42. The central portion of the reinforcing recess 48 in the left-right direction is continuous with the main hole 43.

Reinforcing materials 31 and 32 are inserted into the reinforcing recess 48. The reinforcing members 31 and 32 are composed of a first reinforcing member 31 and a second reinforcing member 32. That is, the reinforcing members 31 and 32 are divided into left and right parts. The first reinforcing material 31 is located on the door end side, and the second reinforcing material 32 is located on the door tail side. Both the first reinforcing member 31 and the second reinforcing member 32 are made of sheet metal. The first reinforcing member 31 has a main plate portion 33, and a first bending piece portion 34 and a second bending piece portion 35 that are bent and extended downward from both left and right ends of the main plate portion 33, respectively. There is. The main plate portion 33 has a flat plate shape along the main body base portion 40 of the block main body 30, and the vertical direction is the normal direction. A through hole 26b for crimping is formed in the main plate portion 33. The main plate portion 33 is fitted into the reinforcing recess 48 of the main body base portion 40. The thickness of the main plate portion 33 is slightly thicker than the depth of the reinforcing recess 48 of the main body base portion 40.

The first bending piece portion 34 is located at the end of the main plate portion 33 on the door tip side, and the second bending piece portion 35 is located at the end of the main plate portion 33 on the door sill side. On the other hand, it extends substantially vertically downward. The first bent piece portion 34 is inserted into the locking hole 42 on the door end side of the block body 30. The lower end portion of the first bent piece portion 34 is substantially flush with the lower surface of the body base portion 40 of the block body 30. The second bent piece portion 35 is inserted into the main hole 43 of the block body 30. The length L12 of the second bent piece portion 35 is longer than the length L11 of the first bent piece portion 34. That is, there is a relationship of L12>L11. The lower end portion of the second bent piece portion 35 does not protrude downward from the lower surface of the main body convex portion 41 of the block main body 30. The lower end of the second bent piece portion 35 is located slightly above the lower surface of the main body convex portion 41 of the block main body 30. The second bent piece portion 35 abuts on the inner surface of the second side wall portion 45 of the main body convex portion 41, and is separated from the inner surface of the first side wall portion 44 of the main body convex portion 41. The second bent piece portion 35 supports the second side wall portion 45 of the main body convex portion 41 from the inner surface side. In this way, the first bending piece portion 34 and the second bending piece portion 35 are engaged with the locking hole 42 and the main hole 43 of the block body 30, respectively, so that the first reinforcing member 31 with respect to the block body 30. It is positioned and is in a temporarily fixed state. In particular, the lateral displacement of the first reinforcing member 31 with respect to the block body 30 is prevented.

The second reinforcing member 32 has substantially the same configuration as the first reinforcing member 31 and has the same plate thickness. The second reinforcing member 32 includes a main plate portion 36, and a first bending piece portion 37 and a second bending piece portion 38 that are bent and extended downward from both left and right ends of the main plate portion 36, respectively. There is. The main plate portion 36 has a flat plate shape along the main body base portion 40 of the block main body 30, and has a vertical direction as a normal direction. A through hole 26b for caulking is formed in the main plate portion 36. The main plate portion 36 fits into the reinforcing recess 48 of the main body base portion 40. The thickness of the main plate portion 36 is slightly thicker than the depth of the reinforcing recess 48 of the main body base portion 40. The first bending piece portion 37 is located at the end of the main plate portion 36 on the side of the door, and the second bending piece portion 38 is located at the end of the main plate portion 36 on the door end side. On the other hand, it extends substantially vertically downward.

The first bent piece portion 37 is inserted into the locking hole 42 on the door tail side of the block body 30. The lower end portion of the first bent piece portion 37 is substantially flush with the lower surface of the body base portion 40 of the block body 30. The length L21 of the first bent piece portion 37 of the second reinforcing material 32 is the same as the length L11 of the first bent piece portion 34 of the first reinforcing material 31. The second bent piece portion 38 of the second reinforcing member 32 is inserted into the main hole 43 of the block body 30. The second bent piece portion 38 of the second reinforcing material 32 is engaged in the gap between the second bent piece portion 35 of the first reinforcing material 31 and the wall surface of the main hole 43. The second bent piece portion 38 of the second reinforcing material 32 contacts the second bent piece portion 35 of the first reinforcing material 31 and also contacts the wall surface of the main hole 43. The first bending piece portion 37 and the second bending piece portion 38 of the second reinforcing material 32 are engaged with the locking hole 42 and the main hole 43 of the block body 30, respectively, so that the second reinforcing material 32 is moved to the block body 30. It is positioned with respect to and is in a temporarily fixed state. In particular, the lateral displacement of the second reinforcing member 32 with respect to the block body 30 is prevented. The size of the main hole 43 in the left-right direction is substantially equal to the sum of the thickness of the second bent piece portion 35 of the first reinforcing member 31 and the thickness of the second bent piece portion 38 of the second reinforcing member 32.

The length L22 of the second bent piece portion 38 of the second reinforcing member 32 is the same as the length L21 of the first bent piece portion 37. That is, there is a relationship of L22=L21. The length L22 of the second bent piece portion 38 of the second reinforcing material 32 is shorter than the length L12 of the second bent piece portion 35 of the first reinforcing material 31. That is, there is a relationship of L22<L12. The second bent piece portion 38 of the second reinforcing member 32 does not enter the inside of the main body convex portion 41 of the block main body 30 and remains on the main body base portion 40. Since the length L22 of the second bent piece portion 38 of the second reinforcing member 32 is shorter than the length L12 of the second bent piece portion 35 of the first reinforcing member 31 in this manner, A space remains between the side wall portion 44 and the second bent piece portion 35 of the first reinforcing member 31. This space is the cavity 39. Of the entire length of the main hole 43, the entire inner region of the main body base portion 40 is filled with the second bent piece portion 35 of the first reinforcing member 31 and the second bent piece portion 38 of the second reinforcing member 32. In the inner portion of the main body convex portion 41 of the entire length of the main hole 43, a half region on the second side wall portion 45 side is filled with the second bent piece portion 35 of the first reinforcing member 31, but on the first side wall portion 44 side. The half region is not filled and remains as the cavity 39.

As described above, the engaging convex portion 25 of the actuating member 3 is configured by the main body convex portion 41 of the block main body 30 and the second bent piece portion 35 of the first reinforcing member 31 located inside thereof. The second bent piece portion 35 of the first reinforcing member 31 is eccentric to the second side surface 25b side with respect to the center of the engagement convex portion 25 in the left-right direction. The distance from the first side surface 25a of the engaging convex portion 25 to the second bending piece portion 35 of the first reinforcing member 31 is equal to the distance from the second side surface 25b of the engaging convex portion 25 to the second bending piece portion of the first reinforcing member 31. Greater than the distance to 35. In the present embodiment, the main body convex portion 41 of the block main body 30 constitutes a cover portion, and the lower portion of the second bending piece portion 35 of the first reinforcing member 31 entering the main body convex portion 41 is the engaging convex portion 25. Constitutes the core of the.

<Assembly of operating member 3>
As shown in FIG. 6, the engaging block 21 is manufactured by mounting the first reinforcing material 31 and the second reinforcing material 32 on the block body 30. The first reinforcing material 31 and the second reinforcing material 32 are temporarily fixed to the block body 30. Thereafter, as shown in FIG. 5, the engaging block 21 is fixed to the mounting plate 20 by caulking with the two caulking pins 27.

<Opening and closing operation of sliding door 1>
When the sliding door 1 is pulled to the closing side from the fully opened state as shown in FIG. 1A and reaches the predetermined position shown in FIG. The hook 11 abuts. The position of the sliding door 1 shown in FIG. 1B is an operation start position where the retracting device starts to operate. The sliding door 1 is guided by the retracting device from the operation start position to the fully closed position of the sliding door 1 shown in FIG. The fully closed position is also the position at which the retractor ends operation. In this embodiment, the operation start position is the first position and the fully closed position is the second position.

Enlarged views are shown in FIGS. FIG. 7 shows a state immediately before the sliding door 1 moves to the closing side and the hook 11 engages with the engaging protrusion 25 of the actuating member 3. That is, FIG. 7 shows a state in which the sliding door 1 is located slightly on the open side with respect to the operation start position. The hook 11 and the slider 12 are located on the most door end side (close side) in the case 10. The hook 11 is tilted downward, and the guide convex portion 18 of the hook 11 is located in the locking groove portion 14b of the guide groove. The first spring 13 is in the most extended state and urges the slider 12 to the open side. Although the slider 12 and the hook 11 are pulled toward the open side by the first spring 13, the guide protrusion 18 of the hook 11 is located in the locking groove portion 14b and the movement toward the open side is restricted. 12 and the hook 11 cannot move to the open side.

FIG. 8 shows a state in which the sliding door 1 has further moved to the closing side from the state of FIG. 7 and at the moment when the hook 11 comes into contact with the engaging convex portion 25 of the operating member 3. By the hook 11 coming into contact with the engaging convex portion 25 of the actuating member 3 in this way, the hook 11 rotates upward with the support shaft 16 as the rotation fulcrum against the biasing force of the second spring 19. Then, as shown in FIG. 9, the hook 11 is in a substantially horizontal posture, and the engaging convex portion 25 of the operating member 3 engages with the engaging concave portion 17 of the hook 11. With such upward rotation of the hook 11, the guide protrusion 18 of the hook 11 moves up the locking groove 14b and moves to the linear groove 14a. The guide convex portion 18 of the hook 11 moves from the locking groove portion 14b to the linear groove portion 14a, whereby the locked state of the hook 11 by the locking groove portion 14b is released, and the hook 11 and the slider 12 are provided with the first spring 13. Due to the force, the case 10 moves relatively to the open side. As shown in FIG. 10, the guide convex portion 18 of the hook 11 slides the straight groove portion 14a toward the side opposite to the locking groove portion 14b. Since the actuating member 3 is fixed to the door frame 2 and the hook 11 engages with the engaging projection 25 of the actuating member 3, the hook 11 and the slider 12 stay in the predetermined position together with the actuating member 3. Therefore, the urging force of the first spring 13 causes the case 10 to move relatively to the closing side with respect to the hook 11 and the slider 12, and the sliding door 1 moves to the closing side together with the case 10, and eventually to FIG. As shown, the sliding door 1 is in a fully closed state. When the slider 12 moves relative to the case 10 by the first spring 13, the damper reduces the moving speed of the slider 12. Therefore, even if the sliding door 1 is strongly closed, the sliding door 1 does not strongly collide with the door frame 2 and is slowly guided to the fully closed state.

On the other hand, when the sliding door 1 is opened from the fully closed state, the operation opposite to the above is performed. That is, when the sliding door 1 is opened from the fully closed state shown in FIG. 11, the case 10 is also moved along with the movement of the sliding door 1, and the hook 11 and the slider 12 are urged by the first spring 13 as shown in FIG. It slides toward the side of the locking groove 14b against. Then, when the sliding door 1 is opened to the operation start position, the guide protrusion 18 of the hook 11 reaches the locking groove 14b as shown in FIG. Since the hook 11 is rotationally biased downward by the second spring 19, the guide protrusion 18 of the hook 11 moves downward in the locking groove 14b, and the hook 11 is in the tilted posture as shown in FIG. Become. With the downward rotation of the hook 11, the engagement state between the engagement concave portion 17 of the hook 11 and the engagement convex portion 25 of the actuating member 3 is released. Thereafter, as shown in FIG. 7, the hook 11 and the slider 12 are integrated with the case 10 and move together with the sliding door 1 toward the opening side.

The engagement between the operating member 3 and the hook 11 will be further described. FIG. 12 shows a state when the hook 11 reaches a position immediately before the operation start position, and FIG. 13 shows a state when the hook 11 comes into contact with the first side surface 25a of the engaging projection 25 of the operation member 3. Shows the state. As shown by the chain double-dashed line in FIG. 12, when the hook 11 is in the tilted posture, the height of the upper end 17a of the wall of the hook 11 on the tip side of the engaging recess 17 is equal to the height of the engaging protrusion of the operating member 3. It is slightly lower than the height of the lower surface of the portion 25. Therefore, the upper end portion 17 a of the wall surface on the tip end side of the engagement concave portion 17 of the hook 11 can pass through the engagement convex portion 25 without colliding with the engagement convex portion 25 of the operating member 3. On the other hand, the height of the upper end portion 17b of the wall surface on the proximal end side of the engagement concave portion 17 of the hook 11 is higher than the height of the lower surface of the engagement convex portion 25 of the operating member 3. Therefore, the upper end portion 17b of the wall surface on the base end side of the engagement concave portion 17 of the hook 11 cannot pass through the engagement convex portion 25 of the actuating member 3, and as shown in FIG. It collides with one side surface 25a.

The first side surface 25 a of the engagement convex portion 25 is composed of a block main body 30 made of rubber. Therefore, as compared with the case where the first side surface 25a of the engaging convex portion 25 is made of metal or hard resin, the impact when the hook 11 collides with the first side surface 25a of the engaging convex portion 25 is mitigated, The collision sound is low. Further, when the wall surface on the base end side of the engagement concave portion 17 of the hook 11 strongly collides with the first side surface 25a of the engagement convex portion 25, the first convex portion 41 of the main body convex portion 41 having the first side surface 25a as the outer surface as shown in FIG. The one side wall portion 44 is largely deformed toward the second side wall portion 45 side. Therefore, the impact when the hook 11 collides with the engaging convex portion 25 is alleviated, and the collision noise is suppressed. In particular, since the cavity 39 is formed inside the first side wall 44, the first side wall 44 is larger than the case where the engaging projection 25 has a solid configuration without the cavity 39. Can easily be greatly deformed and absorbs shock.

On the other hand, when the engagement recess 17 of the hook 11 engages with the engagement protrusion 25 of the actuating member 3 to guide the sliding door 1 to the fully closed position as shown in FIG. The second side surface 25b of 25 is pushed. Since the second bent piece portion 35 of the metal first reinforcement member 31 is located inside the second side wall portion 45 of the main body convex portion 41, the second side wall portion 45 is formed as the second reinforcement member 31 of the second reinforcement member 31. The bending piece portion 35 supports the bending piece portion 35 from the inside to suppress the deformation of the second side wall portion 45. Therefore, the engagement state between the engagement concave portion 17 of the hook 11 and the engagement convex portion 25 of the operating member 3 is reliably maintained, and the engagement concave portion 17 of the hook 11 is separated from the engagement convex portion 25 of the operating member 3. The sliding door 1 is reliably guided to the fully closed position without coming off. Further, even when the sliding door 1 is opened from the fully closed position to the operation start position, the second side wall portion 45 is less likely to be deformed, so that the engagement concave portion 17 of the hook 11 and the engagement convex portion 25 of the operating member 3 are engaged with each other. The state is maintained and the sliding door 1 can be reliably opened.

Note that the engaging protrusion 25 may have a structure without the cavity 39. Further, the engagement block 21 may be made of a single material. The actuation member 3 may not be provided with the attachment plate 20, and the engagement block 21 may be directly attached to the door frame 2 or the like. Further, in the above-described embodiment, the sliding door 1 is manually closed from the fully open position to the operation start position, but the sliding door 1 may be provided with a door closer and the sliding door 1 may be automatically closed by the door closer.

1 Sliding Door 2 Door Frame 3 Actuating Member 4 Device Main Body 10 Case 11 Hook 12 Slider 13 First Spring 14a Straight Groove 14b Locking Groove 15 Guide Convex 16 Support Shaft 17 Engaging Recess 17a Upper End 17b of the Wall on the Tip Side Base End Upper end portion 18 of the side wall surface 18 Guide convex portion 19 Second spring 20 Mounting plate 21 Engaging block 22 Through hole for screwing 23 Through hole for caulking 24 Base portion 25 Engaging convex portion 25a First side surface 25b Second side surface 25c Third side surface 26a Through hole 26b for caulking of block body Through hole for caulking of reinforcing material 27 Caulking pin 30 Block body 31 First reinforcing material 32 Second reinforcing material 33 Main plate portion 34 First bent piece portion 35 Second Bending piece (core)
36 Main plate part 37 1st bending piece part 38 2nd bending piece part 39 Cavity part 40 Main body base part 41 Main body convex part (cover part)
42 locking hole 43 main hole 44 first side wall part 45 second side wall part 46 third side wall part 47 fourth side wall part 48 reinforcing recess

Claims (3)

It is attached to one of the sliding door and the door frame, and when the sliding door comes to the first position, it operates the device body by engaging with a hook in the device body attached to the other of the sliding door and the door frame. A sliding door retraction device for guiding the sliding door to the second position,
Has an engaging protrusion that engages with the hook,
The engaging convex portion has an asymmetric structure in which the first side surface with which the hook abuts when the sliding door comes to the first position is more easily deformable than the second side surface opposite to the first side surface. The operating member of the sliding door retractor. 2. The engagement convex portion has a core portion made of a hard material and a cover portion made of a soft material covering the outside of the core portion, and the core portion is biased to the second side surface side. Member of the sliding door retraction device. The actuating member for the retracting device of the sliding door according to claim 2, wherein the engaging convex portion has a hollow portion between the core portion and the first side surface.

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