JP6438864B2 - Shoulder adjuster device and seat belt device - Google Patents

Description

  The present invention relates to a shoulder adjuster device and a seat belt device, and more particularly to a shoulder adjuster device for adjusting the height of a through anchor used in a seat belt device of a vehicle and a seat belt device using the same.

  A shoulder adjuster device is attached to a vehicle body frame such as a vehicle body center pillar, and various types have been proposed in the past (see, for example, Patent Document 1). The shoulder adjuster device includes a guide rail that is fixed to the vehicle body frame, a slide member that is slidably attached to the guide rail, and a through anchor that is connected to the slide member and supports webbing. Then, release the lock by pinching the button to operate the slide member with your finger, slide the position of the through anchor to the appropriate height, and adjust the button to the spring member so that the button is locked again after adjustment To return to the original position. Thereby, the latch pin (latch member) provided in the slide member is inserted into and removed from the predetermined positions of the plurality of latch holes on the guide rail, and the through anchor is fixed to an appropriate height together with the slide member.

JP 2001-30876 A

  By the way, in the conventional shoulder adjuster device, a pair of stoppers for regulating the amount of movement of the slide member are provided at both ends in the longitudinal direction of the guide rail. One of these stoppers can be formed in advance on the guide rail, but the other stopper can be used to squeeze the pin after assembling the slide member to the guide rail, It is formed by increasing the width or cutting the rail with a press. For this reason, once the slide member is assembled to the guide rail, it becomes difficult to remove the slide member from the guide rail. Therefore, it has been desired to improve the maintainability of the shoulder adjuster device.

  In addition, since the other stopper needs to be formed after the slide member is assembled to the guide rail, a process for forming the other stopper is separately required, leading to an increase in cost. In particular, the process of forming the other stopper by caulking the pin, expanding the width of a part of the rail, or cutting the rail with a press increases the number of parts or requires additional processing. Therefore, it is easy to lead to cost increase. Furthermore, when a stopper is formed by cutting and raising with a press after assembling the slide member, the sheared surface of the cut and raised portion is not coated, and there is a possibility that rust will occur due to long-term use. is there.

  The present invention has been made in view of the above circumstances, and its purpose is to facilitate attachment / detachment of the slide member to / from the guide rail, improve maintainability, and form the stopper at a low cost. It is an object of the present invention to provide a shoulder adjuster device and a seat belt device.

The above object of the present invention is achieved by the following configurations.
(1) a guide rail having a plurality of latch holes at predetermined intervals in the longitudinal direction and fixed to the body frame;
A slide member slidably attached to the guide rail;
A through anchor connected to the slide member to support the webbing;
A latch member that is provided in the slide member so as to be able to advance and retreat, and that protrudes from the slide member and engages with the latch hole, thereby restraining sliding of the slide member on the guide rail;
A latch spring that urges the latch member in a direction to insert the latch member into the latch hole;
A button for performing an operation of pulling out the latch member from the latch hole against an urging force of the latch spring;
A cover that is attached to the slide member and has an opening window part through which the button is exposed so that the button can move in the pulling direction of the latch member;
A shoulder adjuster device that adjusts the height of the through anchor by selecting the latch hole with which the latch member engages,
The guide rail is formed on both sides in the longitudinal direction with respect to the plurality of latch holes, and the amount of movement of the slide member is regulated by contact of the latch member with the cover attached to the slide member. A pair of stoppers are provided,
In a state where the cover is not attached to the slide member, the latch member is sized so as not to come into contact with the stopper, allowing a pull-in stroke in the pull-out direction of the button,
The button is provided with an interference portion that interferes with the cover when the button moves in the pulling direction of the latch member,
The pull-in stroke of the button in the pull-out direction in a state where the cover is attached to the slide member is a state where the cover is not attached to the slide member because the interference part of the button interferes with the cover. The shoulder adjuster device is smaller than a pulling stroke of the button in the pulling direction.
(2) pre-Symbol pair of stopper shoulder adjuster apparatus according to, characterized in that it is integrally formed (1) in a state that bulges from the rail surface to the latch hole.
(3) The shoulder adjuster device according to (2), wherein the guide rail is coated over the entire circumference from the pair of stoppers to the rail surface.
(4) Both sides in the longitudinal direction of the cover that define the opening window have longitudinal openings that respectively open in the longitudinal direction;
The interference portion protrudes into the longitudinal opening of the cover on at least one of both longitudinal end faces of the button and is spaced apart from an upper surface that defines the longitudinal opening. The shoulder adjuster device according to any one of (1) to (3), wherein the shoulder adjuster device is a hook portion that can come into contact with the upper surface when moving to the position.
(5) The slide member includes a spring chamber that houses the latch member movably in the pull-out direction and houses a latch spring that biases the latch member downward,
The shoulder adjuster according to any one of (1) to (4), wherein the spring chamber regulates movement of the button in the pulling direction when the cover is not attached to the slide member. apparatus.
(6) A seat belt device using the shoulder adjuster device according to any one of (1) to (5).
The shape of the latch member is preferably a pin shape.
The “state where the cover is attached to the slide member” includes a state during normal use of the shoulder adjuster device.

  According to the shoulder adjuster device of the present invention, the button is provided with an interference portion that interferes with the cover when the button moves in the pulling direction of the latch member, and the button is pulled out when the cover is attached to the slide member. The pull-in stroke in the direction is smaller than the pull-in stroke in the pull-out direction of the button when the cover is not attached to the slide member because the interference part of the button interferes with the cover. As a result, when the cover is not attached, the slide member is assembled to the guide rail on which a pair of stoppers are formed in advance by allowing a pulling stroke of a size that the latch member does not contact the stopper. Can do. In addition, when the cover is attached, the interference portion interferes with the cover, so that the latch member has a pulling stroke large enough to come into contact with the stopper, so that the movement amount of the slide member is regulated by the pair of stoppers. be able to. Therefore, the slide member can be easily attached to and detached from the guide rail, the maintainability can be improved, and the stopper can be formed at low cost.

It is a perspective view which shows the external appearance of the shoulder adjuster apparatus of embodiment of this invention. It is a front view of the shoulder adjuster apparatus shown in FIG. It is a side view of the shoulder adjuster apparatus shown in FIG. It is a disassembled perspective view of the shoulder adjuster apparatus shown in FIG. (A) is the perspective view which looked at the button from the front, (b) is the perspective view which looked at the button from back. (A) is the perspective view which looked at the cover from the front, (b) is the perspective view which looked at the cover from back. It is the VII-VII sectional view taken on the line of FIG. FIG. 3 is a cross-sectional view of the main part for explaining the operation of the shoulder adjuster device. The right cross-sectional view is taken along the line VIII-VIII in FIG. 3, and the left cross-sectional view is taken along the line VIII′-VIII ′. (B) is a view when the button is gripped to release the latch and the button is unlocked with respect to the garnish, and (c) is a view when the button is lifted and the latch is removed. It is. It is a figure in the state of pulling up the button and removing the latch in a state where the cover is not attached to the slide member. The front view of the button showing the positional relationship between the button and the cover when the button is locked with respect to the garnish and when the button is unlocked and the button is moved to the limit of movement in the pull-out direction. is there. A view of the button showing the positional relationship between the button and the cover from the rear when the button is locked with respect to the garnish and when the button is unlocked and the button is moved to the limit of movement in the pull-out direction. is there. (A) is a schematic diagram for explaining a pulling stroke of the latch pin in a state where the slide member is assembled to the guide rail, and (b) is a drawing of the latch pin in a state after the slide member is assembled to the guide rail. It is a schematic diagram for demonstrating a stroke.

  Hereinafter, an embodiment of a shoulder adjuster device used in a seat belt device according to the present invention will be described in detail with reference to the drawings. In addition, the direction in the following description is a direction when the shoulder adjuster device is attached to the vehicle body. That is, the vertical direction of the shoulder adjuster device indicates the vertical direction of the vehicle body, and the horizontal direction indicates the direction of the shoulder adjuster device attached to the vehicle body as viewed from the inside of the vehicle. Further, the front direction indicates the interior space side, and the back side indicates the direction opposite to the front direction, that is, the vehicle body mounting surface side of the shoulder adjuster device.

As shown in FIGS. 1 to 4, the shoulder adjuster device 1 of this embodiment includes a guide rail 10, a slide member S, a through anchor 75, a latch pin (latch member) 80, a latch spring 90, and a button 40. And a cover 50.
The guide rail 10 is integrally fixed to a vehicle body frame such as a center pillar by fixing means such as bolts, and has a plurality of latch holes 12 at predetermined intervals in the longitudinal direction. The slide member S is engaged with the guide rail 10 and is slidably attached in the vertical direction. The through anchor 75 is connected to the slide member S by a fixing means such as a bolt, and supports the intermediate portion in the length direction of the webbing W (see FIG. 3) so as to be slidable. The latch pin 80 is provided on the slide member S so as to be able to advance and retreat. The latch pin 80 protrudes from the slide member S and engages with the latch hole 12, thereby restraining the slide member S from sliding on the guide rail 10. The latch spring 90 biases the latch pin 80 in the direction of inserting the latch pin 80 into the latch hole 12. The button 40 performs an operation of pulling the latch pin 80 out of the latch hole 12 against the urging force of the latch spring 90. The cover 50 has an opening window portion 54 that exposes the button 40 to the outside so that the button 40 can move in the pulling direction of the latch pin 80, and is attached to the slide member S.

  The guide rail 10 is made of a metal such as high-tensile steel whose surface is processed by electrodeposition coating or plating, and has a structure that is gently curved along the longitudinal direction (vertical direction) of the center pillar. At both ends of the guide rail 10, mounting holes 11 for inserting bolts are formed, and the guide rail 10 is fixed to the vehicle body frame by bolts 19 inserted through the mounting holes 11. Further, the plurality of latch holes 12 are formed in the center portion of the guide rail 10 in the width direction. Further, the guide rail 10 is formed with a pair of stoppers 13 at both ends of the curved rail surface where the plurality of latch holes 12 are formed on both sides in the longitudinal direction with respect to the plurality of latch holes 12. As will be described later, the pair of stoppers 13 regulates the amount of movement of the slide member S when the latch pin 80 comes into contact with the cover 50 attached to the slide member S.

The pair of stoppers 13 are integrally formed in a state of being bulged from the curved rail surface where the plurality of latch holes 12 are formed by extrusion. Therefore, the surface treatment such as electrodeposition coating or plating of the surface performed in the subsequent process is performed over the entire circumference from the pair of stoppers 13 to the rail surface.
Note that the pair of stoppers 13 is not limited to extrusion processing, and may be formed by other methods such as cutting up by a press. However, it is preferable from the viewpoint of durability of the stopper 13 that the pair of stoppers 13 is formed before the surface treatment is performed. That is, the pair of stoppers 13 is not cut up after painting (after surface treatment), but is cut up before painting (before surface treatment), so that the rusted surface is not rusted and durability is improved. Can do.

  As shown in FIG. 4, the slide member S includes a slide base 20 slidably engaged with the guide rail 10, a garnish 30 fixed integrally with the slide base 20, and the guide rail 10 and the slide base 20. And a slide piece 60 that is interposed therebetween and improves the slidability of the slide base 20.

  The slide base 20 is made of a metal such as high-strength steel whose surface is processed by electrodeposition coating or plating, and the position thereof matches one of the plurality of latch holes 12 on the guide rail 10 depending on the sliding position. A pin holding hole 22, a mounting hole 21 for mounting a nut 70 for fixing the through anchor 100, a locking hole 23 through which a protrusion 33 (see FIG. 5) formed on the back surface of the garnish 30 is inserted; Have

  The slide piece 60 is made of resin such as polypropylene PP, and the through hole 61 corresponding to the nut 70, the holding hole 62 surrounding the peripheral portion of the pin holding hole 22 of the slide base 20, and the projection 33 of the garnish 30 are inserted. And a locking hole 63.

  The garnish 30 is made of resin such as polypropylene PP, and is a spring that can accommodate the latch pin 80 and the latch spring 90 at a position corresponding to the through hole 31 through which the nut 70 passes and the pin holding hole 22 of the slide base 20. It has a chamber 32 and a projection 33 formed on the back surface of the garnish 30.

  And this protrusion 33 is couple | bonded so that the garnish 30, the slide base 20, and the slide piece 60 may slide integrally by fitting in each latching holes 23 and 63 of the garnish 30 and the slide base 20. FIG.

  Further, the nut 70 is fixed to the mounting hole 21 of the slide base 20, and the nut 70 is interposed in the through hole 31 of the garnish 30 that is integrally coupled to the slide base 20. And the through anchor 75 is attached to the slide member S by fastening the bolt 71 which pivotally supports the through anchor 75 to this nut 70 (refer FIG. 6).

  The latch pin 80 is made of heat-treated and quenched metal such as S50C, and is slidably inserted into the pin holding hole 22 of the slide base 20 and is inserted into the latch hole 12 on the guide rail 10 with the matching position. By joining, the slide member S is fixed to the guide rail 10. The upper portion of the latch pin 80 is accommodated in the spring chamber 32 of the garnish 30, and a latch spring 90 that biases the latch pin 80 toward the guide rail 10 between the upper end of the latch pin 80 and the ceiling wall of the spring chamber 32. Is intervening. The latch spring 90 is supported by a spring support portion 32 a formed on the ceiling wall of the spring chamber 32, and biases the latch pin 80 in a direction to be inserted into the latch hole 12 on the guide rail 10.

  In addition, a pair of locking pieces 81 projecting radially outward is provided on the outer periphery of the upper end of the latch pin 80, and the pair of locking pieces 81 passes through a slit 34 provided on the side wall of the spring chamber 32. It protrudes so as to be movable and is connected to a button 40 located outside thereof.

  The button 40 is made of resin such as polypropylene PP, polyacetal POM, etc., and is connected to the upper end of the latch pin 80. When adjusting the height of the slide member S, the button 40 resists the urging force of the latch spring 90 and latches the hole. Pull out from 12. As shown also in FIG. 5, the button 40 has an inverted U-shaped cross section having an outer surface portion 41 and left and right outer walls 42, and guides from the outer surface portion 41 with an interval inside the left and right side walls 42. The button 40 and the latch pin 80 are directly connected by engaging a locking piece 81 at the upper end of the latch pin 80 with a locking hole 46 provided in the connecting wall 45 and having a pair of connecting walls 45 extending to the rail side. ing.

  The right and left outer walls 42 of the button 40 have lock protrusions (lock portions) 43 that engage with the lock grooves 35 of the garnish 30 at normal times. By being picked, it is configured to have flexibility so as to bend inward and unlock the lock protrusion 43 with respect to the lock groove 35. With this unlocked state, the button 40 can be displaced in the direction of pulling out the latch pin 80 from the latch hole 12, and the latch pin 80 can be inserted into and removed from the latch hole 12 by the displacement operation of the button 40. become. In addition, the lock protrusions 43 are formed on both sides of the button 40 in the vertical direction so as to straddle the locking holes 46 of the connecting wall 45, the middle portions thereof are thinned, and the left and right outer walls 42 are bent inward. In some cases, space is saved in the width direction without interfering with the connecting wall 45 and the locking piece 81 of the latch pin 80. Further, hook portions 47 and 48 as interference portions that interfere with the cover 50 when the button 40 moves in the pulling direction of the latch pin 80 are provided on both upper and lower end surfaces (both end surfaces in the longitudinal direction of the guide rail 10) of the button 40. Is provided. The hook portion 47 formed on the upper end surface of the button 40 protrudes upward, and the hook portion 48 formed on the lower end surface protrudes downward.

  The cover 50 is made of a resin such as polypropylene, and is attached to the garnish 30 of the slide member S so as to cover the slide member S. The cover 50 has an inverted U-shaped cross section having an upper wall 51 and left and right side walls 52, and has claws 53 that engage with the garnish 30 at the lower ends of the side walls 52. In addition, an opening window portion 54 into which the button 40 is fitted is formed by cutting out a part of the upper wall 51 and the left and right side walls 52, and the cover 50 is formed by fitting the button 40 into the opening window portion 54. And the outer surface of the button 40 are formed so as to form a continuous surface. In this case, the vertical edge portions 54a on both the upper and lower sides (both sides in the longitudinal direction of the guide rail 10) of the opening window portion 54 serve to guide the movement of the button 40 during the displacement operation.

  Here, as also shown in FIGS. 6, 10, and 11, each vertical edge portion 54 a constitutes both the upper and lower side surfaces of the cover 50 that defines the opening window portion 54, and the vertical direction (the longitudinal direction of the guide rail 10). Longitudinal openings 54b and 54c that respectively open in the direction) are defined. The hook portions 47 and 48 of the button 40 protrude into the longitudinal openings 54b and 54c of the cover 50 and are separated from the upper surfaces 54b1 and 54c1 that define the longitudinal openings 54b and 54c. When moving in the pulling-out direction, the upper surfaces 54b1 and 54c1 can be contacted.

  In the state where the cover 50 is not attached to the slide member S, the spring chamber 32 of the garnish 30 regulates the pull-in stroke St1 in the pull-out direction of the button 40 as shown in FIG. In this case, the upper end of the latch pin 80 may be in contact with the spring support portion 32a of the spring chamber 32, or the latch spring 80 may be compressed to the limit to restrict the movement of the latch pin 80. On the other hand, in the state where the cover 50 is attached to the slide member S, as shown in FIGS. 10 and 11, the hook portions 47 and 48 of the button 40 are connected to the upper surfaces 54 b 1 and 54 c 1 of the longitudinal openings 54 b and 54 c of the cover 50. The pulling stroke St in the pulling direction of the button 40 is regulated.

  That is, when the button 40 is locked, the distance between the hook portions 47 and 48 of the button 40 and the upper surfaces 54b1 and 54c1 of the longitudinal openings 54b and 54c in the retracting direction is determined by the cover 50 being attached to the slide member S. The pulling stroke St in the pulling direction of the button 40 in the pressed state is set to be smaller than the pulling stroke St1 in the pulling direction of the button 40 when the cover 50 is not attached to the slide member S (FIG. 12). reference).

  When assembling the shoulder adjuster device 1, first, the nut 70 is attached to and integrated with the slide base 20, and the slide piece 60 is disposed on the lower surface of the slide base 20. Then, the latch piece 81 of the latch pin 80 is protruded from the slit 34 formed in the spring chamber 32 of the garnish 30 so that the upper portion of the latch pin 80 and the latch spring 90 are accommodated in the spring chamber 23, and the latch pin 80 is inserted into the slide base 20. The garnish 30 is placed on the upper surface of the slide base 20. In this state, the claw portion 36 provided at the front end of the back surface of the garnish 30 is engaged with the slide base 20, and the projection 33 of the garnish 30 is fitted into the locking holes 23 and 63 of the slide base 20 and the slide piece 60. . Furthermore, the bolts 71 that pivotally support the through anchor 100 are fastened to the nuts 70 exposed from the through holes 31 of the garnish 30, whereby the slide base 20 and the garnish 30 are firmly coupled.

  Next, the locking hole 46 of the connecting wall 45 of the button 40 is engaged with the locking piece 81 of the latch pin 80 protruding from the slit 34 on the side wall of the spring chamber 32 of the garnish 30 and the left and right side walls 42 are locked. The protrusion 43 is engaged with the lock groove 35 of the garnish 30, and the button 40 is attached to the garnish 30.

  In this state, the slide base 20 is slidably engaged with the guide rail 10. Here, since the cover 50 is not attached when the slide member S including the slide base 20 is attached to the guide rail 10, the button 40 does not interfere with the cover 50 by the hook portions 47 and 48. As shown in FIG. 9, the back surface side end surface of the latch pin 80 exceeds the height of the stopper 13, and the button 40 can be stroked in the retracting direction. Accordingly, as shown in FIG. 12A, the slide member S is moved to the guide rail 10 in a state where the button 40 is stroked in the retracting direction so that the back surface side end surface of the latch pin 80 exceeds the height of the stopper 13. It is inserted. Then, at an appropriate sliding position, the button 40 is released, the latch pin 80 is inserted into the latch hole 12 on the guide rail 10, and the slide member S is fixed to the guide rail 10. Thereafter, the cover 50 is attached to the garnish 30 with the claws 53.

  Thus, in the fixed state as shown in FIG. 8A, even when the load G in the pulling direction of the latch pin 80 is applied, the lock protrusion 43 of the button 40 is engaged with the lock groove 35 of the garnish 30. Therefore, unlocking due to impact or the like is prevented.

  When adjusting the height of the slide member S from the fixed state shown in FIG. 8A, the operator holds the left and right outer walls 42 of the button 40 as shown in FIG. 8B. And push inward by applying a picking force (arrow A). Then, the lock protrusion (lock portion) 43 of the button 40 and the lock groove 35 of the garnish 30 are unlocked. In this state, as shown in FIG. 8C, the button 40 is pulled out toward the front. (Arrow B). By doing so, the latch pin 80 connected to the button 40 can be pulled out from the latch hole 12 of the guide rail 10, and the slide member S can be slid along the guide rail 10 in this state.

  The movement of the button 40 in the forward direction (the pulling direction) is restricted by the button hook portions 47 and 48 coming into contact with the longitudinal openings 54 b and 54 c of the cover 50. Next, after adjusting the height of the slide member S to a desired height, the button 40 is released. Then, the latch pin 80 is inserted into the latch hole 12 of the guide rail 10 by the elastic force of the latch spring 90, and the slide member S is fixed to the guide rail 10.

  Further, when the lock of the button 40 is released and the height of the slide member S is adjusted, the stroke 40 in the retracting direction of the button 40 is regulated by the hook portions 47 and 48 interfering with the cover 50. Therefore, as shown in FIG. 12 (b), the stroke can be made only to a distance where the back surface side end surface of the latch pin 80 does not exceed the height of the stopper 13. When the slide member S is moved in the longitudinal direction of the guide rail 10 in this state, the latch pin 80 comes into contact with the stopper 13, so that the movement amount of the slide member S can be regulated.

  Therefore, according to the shoulder adjuster device 1 of the present embodiment, the button 40 is provided with the hook portions 47 and 48 that interfere with the cover 50 when the button 40 moves in the pulling direction of the latch pin 80. The pull-in stroke St in the pull-out direction of the button 40 with the cover 50 attached is such that the hook portions 47 and 48 of the button 40 interfere with the cover 50 and the cover 50 is not attached to the slide member S. The pull-in stroke St1 in the pull-out direction of the button 40 becomes smaller. As a result, in a state where the cover 50 is not attached, the guide pin 10 on which the pair of stoppers 13 are formed in advance is allowed by allowing a pull-in stroke St1 having a size such that the latch pin 80 does not contact the stopper 13. The slide member S can be assembled. In addition, when the cover 50 is attached, the hook portions 47 and 48 interfere with the cover 50, so that the pulling stroke St is large enough for the latch pin 80 to come into contact with the stopper 13. The amount of movement of the slide member S can be regulated. Therefore, the slide member S can be easily attached to and detached from the guide rail 10, the maintainability can be improved, and the stopper 13 can be formed at low cost.

  Further, the guide rail 10 is formed on both sides in the longitudinal direction with respect to the plurality of latch holes 12, and the amount of movement of the slide member S can be reduced by the latch pin 80 coming into contact with the slide member S with the cover 50 attached. A pair of stoppers 13 to be regulated are provided, and the pair of stoppers 13 are integrally formed in a state of bulging from the rail surface where the latch hole 12 is formed. Therefore, it is possible to manufacture the guide rail 10 at a low cost without requiring an increase in the number of parts for the stopper 13 or an additional process.

  Since the guide rail 10 is coated over the entire circumference from the pair of stoppers 13 to the rail surface, the steel material is not exposed to the outside, and rust is generated on the guide rail 10 over a long period of time. Can be prevented.

  Both side surfaces in the longitudinal direction of the cover 50 that define the opening window portion 54a have longitudinal opening portions 54b and 54c that respectively open in the longitudinal direction. The hook portions 47 and 48 protrude from the longitudinal ends of the button 40 into the longitudinal openings 54b and 54c of the cover 50 and are separated from the upper surfaces 54b1 and 54c1 that define the longitudinal openings 54b and 54c. Since the button 40 can be brought into contact with the upper surfaces 54b1 and 54c1 when the button 40 moves in the pulling direction, only the shapes of the button 40 and the cover 50 to be injection-molded are changed without increasing the number of parts. Thus, the retraction stroke St of the button 40 can be given.

  The slide member S includes a spring chamber 32 that accommodates the latch pin 80 movably in the pulling direction and accommodates a latch spring that urges the latch pin 80 downward. The spring chamber 32 includes a cover 50 on the slide member S. The movement in the pull-out direction of the button 40 when not attached is restricted. Thereby, the pulling-in stroke St1 of the button 40 can be given by changing the height of the spring chamber 32.

In addition, this invention is not limited to the thing of the said embodiment, An improvement or a deformation | transformation etc. are possible suitably.
Although the shape of the latch member of this invention is arbitrary, pin shape like the latch pin of this embodiment is preferable.

DESCRIPTION OF SYMBOLS 1 Shoulder adjuster apparatus 10 Guide rail 12 Latch hole 13 Stopper 20 Slide base 22 Pin holding hole 30 Garnish 40 Button 42 Right and left outer wall 45 Connection wall 47, 48 Hook part (interference part)
50 Cover 54 Opening Window 54b, 54c Longitudinal Opening 80 Latch Pin (Latch Member)
90 Latch spring 100 Through anchor S Slide member St, St1 Retraction stroke

Claims (6)

A guide rail that has a plurality of latch holes at predetermined intervals in the longitudinal direction and can be fixed to the vehicle body frame;
A slide member slidably attached to the guide rail;
A through anchor connected to the slide member to support the webbing;
A latch member that is provided in the slide member so as to be able to advance and retreat, and that protrudes from the slide member and engages with the latch hole, thereby restraining sliding of the slide member on the guide rail;
A latch spring that urges the latch member in a direction to insert the latch member into the latch hole;
A button for performing an operation of pulling out the latch member from the latch hole against an urging force of the latch spring;
A cover that is attached to the slide member and has an opening window part through which the button is exposed so that the button can move in the pulling direction of the latch member;
A shoulder adjuster device that adjusts the height of the through anchor by selecting the latch hole with which the latch member engages,
The guide rail is formed on both sides in the longitudinal direction with respect to the plurality of latch holes, and the amount of movement of the slide member is regulated by contact of the latch member with the cover attached to the slide member. A pair of stoppers are provided,
In a state where the cover is not attached to the slide member, the latch member is sized so as not to come into contact with the stopper, allowing a pull-in stroke in the pull-out direction of the button,
The button is provided with an interference portion that interferes with the cover when the button moves in the pulling direction of the latch member,
The pull-in stroke of the button in the pull-out direction in a state where the cover is attached to the slide member is a state where the cover is not attached to the slide member because the interference part of the button interferes with the cover. The shoulder adjuster device is smaller than a pulling stroke of the button in the pulling direction. Before Symbol pair of stopper shoulder adjuster apparatus according to claim 1, characterized in that it is integrally formed in a state that bulges from the rail surface to the latch hole.   The shoulder adjuster device according to claim 2, wherein the guide rail is coated over the entire circumference from the pair of stoppers to the rail surface. Both sides in the longitudinal direction of the cover that define the opening window have longitudinal openings that respectively open in the longitudinal direction,
The interference portion protrudes into the longitudinal opening of the cover on at least one of both longitudinal end faces of the button and is spaced apart from an upper surface that defines the longitudinal opening. shoulder adjuster apparatus according to claim 1, characterized in that the upper surface can abut against a hook portion when moving in. The slide member includes a spring chamber that houses the latch member movably in the pull-out direction, and that houses a latch spring that urges the latch member downward,
The shoulder adjuster according to any one of claims 1 to 4, wherein the spring chamber regulates movement of the button in the pull-out direction when the cover is not attached to the slide member. apparatus.   A seat belt device using the shoulder adjuster device according to any one of claims 1 to 5.

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