JP4740680B2 - Vehicle seat slide device - Google Patents

Description

  The present invention relates to a vehicle seat slide device, and is an improvement of a stopper mechanism that stops the movement of an upper rail at both end positions of a moving stroke.

  An automobile seat is provided with a seat slide device for moving the seat back and forth. The seat slide device is configured such that an upper rail coupled to a seat is movably provided with respect to a lower rail coupled to a floor. A stopper mechanism is provided to stop the upper rail at both end positions of the moving stroke.

As a conventional vehicle seat slide device, for example, a device disclosed in Patent Document 1 is known. The stopper mechanism provided in the seat slide device of the vehicle is configured as follows. That is, a side frame constituting a seat cushion frame is attached to the upper rail, and an engaging portion that protrudes to the side is formed on the side frame, while a convex portion is formed on the upper surface of the lower rail, and the engaging portion is The movement of the upper rail is restrained by engaging the convex portion.
JP 2004-122826 A

  However, if the side rail is not provided on the upper rail, it cannot be adopted.In assembly, the upper rail must be assembled to the lower rail after the side frame is attached to the upper rail. There is a problem that it cannot interfere with the convex part of the lower rail and cannot be assembled.

  Accordingly, an object of the present invention is to solve the above-described problems and provide a vehicle seat slide device in which a stopper mechanism is configured only by the relationship between the upper rail and the lower rail.

According to the first aspect of the present invention, an upper rail fixed to a seat is slidably assembled to a lower rail fixed to a floor of a vehicle, and the lower rail is bent and formed in a substantially U shape with an upper portion opened. On the inner side, a downward bent portion is formed continuously from the upper portion, while the upper rail is bent and formed in a substantially U shape with the lower portion opened, and on the outer side of the lower portion, the lower portion continues from the lower portion. An upward bent portion is formed, the upper rail is fitted into the opening of the lower rail, and the upward bent portion enters from below the downward bent portion, the upward bent portion and the lower rail, Guide balls held by the retainer is provided between, the latch is provided for regulating the retainer from coming off the upper rail relative to the lower rail In the seat slide apparatus for a vehicle locking mechanism is provided for locking the serial upper rail, the upward bent portion of the upper rail, a moving engagement portion protruding upward is provided on both sides of the longitudinal direction of the mobile engaging portion the one of the anti-removal of the same height as the upward bent portion Ru provided by bending toward the outside of the upper rail, the downward bent portion of the upper portion of the downward bent portion in the position of the front and rear of the lower rail A pair of stopper portions projecting inward and abutting against the end portions of the moving engagement portions are formed.

  According to the present invention, the moving engagement portion is formed in advance in the upward bending portion of the upper rail, and when the upper rail is assembled to the lower rail, the upward bending portion of the upper rail is inserted into the downward bending portion of the lower rail. After that, at the front and rear positions of the lower rail, the upper part of the downward bent part is protruded into the downward bent part to form a pair of stopper parts. As a result, the upper rail cannot be removed from the lower rail.

  Then, when the upper rail is moved relative to the lower rail, the moving engagement portion that moves together with the upper rail comes into contact with either of the pair of stopper portions before and after the lower rail, so that the upper rail stops.

  According to a second aspect of the present invention, in the vehicle seat slide device according to the first aspect, as the lock mechanism, a lock claw provided rotatably on the upper rail and the fitting hole formed in the lower rail and the It is configured to be detachable from a holding hole formed in the upward bent portion of the upper rail, and the moving engagement portion is disposed above the holding hole.

  According to the present invention, since the upper part of the portion where the holding hole is formed in the upward bending portion of the upper rail is also used as the moving engaging portion, the moving engaging portion and the holding hole are located at the same position in the length direction of the upper rail. These processes can be performed together, and the workability of the process is good.

  According to the vehicle seat slide device of the present invention, the stopper mechanism can be configured only by the lower rail and the upper rail. For this reason, when the upper rail is inserted into the lower rail and assembled, it is only necessary to form the stopper portion by projecting the upper portion of the downward bent portion of the lower rail into the downward bent portion. good.

  Embodiments of a vehicle seat slide device according to the present invention will be described below.

  The configuration of the seat slide device is shown in FIG. 1, and an exploded perspective view of the seat slide device is shown in FIG. The seat slide device includes a lower rail 1 installed on the floor of the vehicle and an upper rail 2 attached to the lower surface of the seat. The lower rail 1 and the upper rail 2 are interposed via guide balls 4 and 5 held by a retainer 3. It is slidably assembled in the longitudinal direction.

  More specifically, the lower rail 1 is formed by bending downward bent portions 1a continuously from the upper end of the side wall inside the upper end of the side wall of the substantially U-shaped basic cross section having an upper opening. And the lower rail 1 is being fixed to the floor 21 of the vehicle through the volt | bolt which is not illustrated. On the other hand, the upper rail 2 has a similar substantially U-shape, and an upward bent portion 2a is bent and formed continuously from the lower end of the side wall of the basic cross-sectional portion where the lower portion opens. The upper rail 2 is fitted into the opening of the lower rail 1, and the upward bent portion 2a enters the inside from below the downward bent portion 1a. A cushion sheet (not shown) is attached to the upper rail 2 via bolts 22 shown in FIG.

  A lock mechanism 6 for sliding and fixing the upper rail 2 with respect to the lower rail 1 is disposed in the rail between the lower rail 1 and the upper rail 2 thus configured. The configuration of the lock mechanism 6 will be described below. As shown in FIG. 3, a bearing plate 7 is coupled to the lower surface of the upper wall 2 d of the upper rail 2. The bearing plate 7 includes a pair of bearing portions 7a and an attachment portion 7b, and the attachment portion 7b is coupled to the lower surface of the upper wall 2d via rivets 11a and 11b inserted into the holes 7c. A support rod 8 is rotatably inserted into the pair of bearing portions 7 a, and the support rod 8 is supported in the upper rail 2 substantially parallel to the upper rail 2.

  A lock claw 9 is integrally coupled to the support rod 8. The lock claw 9 includes a claw holding portion 9b having four claw portions 9a and a mounting portion 9c welded to the support rod 8 so as to surround almost half of the outer peripheral surface of the support rod 8. A leaf spring 10 is provided as urging means for urging the lock claw 9 in the locking direction. The base end portion of the leaf spring 10 is coupled to the lower surface of the bearing plate 7 through the rivet 11a inserted through the mounting hole 10c. The leaf spring 10 has a tip portion 10a in contact with the bearing plate 7 and a central portion serving as a pressing portion 10b.

  At a middle position in the length direction of the lock claw 9 corresponding to the pressing portion 10b of the leaf spring 10, a spring receiving portion 9d is formed to protrude to the opposite side of the claw portion 9a, and is formed on the upper surface of the spring receiving portion 9d. The pressing part 10b is in contact.

  In the side wall 2b and the upward bent portion 2a of the upper rail 2, a base end portion and a distal end portion of each claw portion 9a are inserted and held at positions corresponding to the four claw portions 9a of the lock claw 9. Four holding holes 14 and 15 are formed respectively. On the other hand, a lower bent portion 1a of the lower rail 1 is located between the side wall 2b of the upper rail 2 and the upward bent portion 2a. The lower bent portion 1a has a height corresponding to the holding holes 14 and 15. A plurality of fitting holes 16 are formed at the position along the length direction of the lower rail 1. The claw portion 9a is configured to be insertable / removable into and out of the three of a fitting hole 16 formed in the lower rail 1 and holding holes 14 and 15 formed in the upper rail.

  Lock release means 17 is provided for rotating the lock claw 9 in the unlocking direction against the urging force of the leaf spring 10. That is, it is configured as follows.

  A crank portion 8 a is formed at the vehicle body front end portion of the support rod 8. The crank portion 8a is unlocked by rotating the lock claw 9 integrated with the support rod 8 by pushing up. Therefore, as shown in FIG. 2 (a), the crank portion 8a is set at a position of about 45 degrees obliquely from the support rod 8 at the time of locking, and when pushed up, it is rotated clockwise by about 45 degrees to almost the same height as the support rod 8. It is designed to be unlocked by turning to.

  On the other hand, the rivet 11a and the rivet 11b are inserted through holes 13a and 13b at both ends of a support fitting 13 having an L-shaped cross section disposed on the upper surface of the upper wall 2d. Thereby, the support fitting 13 is coupled to the upper surface of the upper rail 2. The support fitting 13 is provided with a holder 19 that is rotatable through a horizontal shaft 18. An engaging portion 19 a that protrudes downward is formed in front of the horizontal shaft 18 of the holder 19. As shown in FIG. 2 (a), the engaging portion 19a protrudes diagonally to the lower right and the tip is horizontal, and the holder 19 is rotated clockwise about the horizontal axis 18 in FIG. 2 (b). When moved, the engaging portion 19a pushes the crank portion 8a upward to rotate the lock claw 9.

  The seat slide device is disposed on both sides of the seat, and a substantially U-shaped operation handle 20 is provided below the seat for simultaneously rotating the holders 19 on both sides. Are inserted into holding portions 19b and 19c protruding in the same lateral direction from the front and rear positions.

  In order to introduce the engaging portion 19a of the holder 19 into the upper rail 2, an introduction port 2c is formed at the upper corner of the upper rail 2 as shown in FIGS. . Then, the engaging portion 19a is introduced into the upper rail 2 from the introduction port 2c, and the engaging portion 19a is disposed below the crank portion 8a. A return spring 12 is provided to return the operation handle 20 after the vehicle front side of the operation handle 20 is pulled up.

  A stopper mechanism for stopping the movement of the upper rail 2 at the front end position and the rear end position of the movement stroke of the upper rail 2 with respect to the lower rail 1 is provided. That is, it is as follows. As shown in FIGS. 1A and 1B, the upward bending portion 2a of the upper rail 2 is provided with a moving engagement portion 2e protruding upward. The moving engagement portion 2e is disposed above the holding hole 15 formed in the upward bent portion 2a at a substantially intermediate position in the length direction of the upper rail 2. The moving engagement portion 2e protrudes from the upper surface of the upward bending portion 2a by h, and the moving engagement portion 2e is formed in the upward bending portion 2a that moves inside the downward bending portion 1a of the lower rail 1, A gap g is provided so that the upper end of the moving engagement portion 2e does not contact the upper surface inside the downward bent portion 1a. On the other hand, at the front and rear positions of the lower rail 1, a pair of cuts 1b perpendicular to the rail and parallel to each other are provided at the upper part of the downward bent portion 1a and the cuts connecting the pair of cuts 1b. As shown in FIG. 1 (b), the portion between them is bent downward so as to protrude from the downward bent portion 1a side to the inside as shown in FIG. 1 (a). A pair of stopper portions 1c with which the end portions of the moving engagement portions 2e move and come into contact are formed. Therefore, the stopper portion 1c can move without interfering with the retainer 3.

  In FIG. 1 (b), reference numerals 2 f are attached to both sides of the moving engagement portion 2 e to prevent the retainer 3 from coming off the upper rail 2. As shown in FIG. 3, the tip of the stopper 2f is bent toward the outside of the upper rail 2, and the bending direction is the same as the bending direction of the stopper portion 1c. As shown, since the height position of the upper end of the stopper 2f is the same as the height of the upward bent portion 2a and is lower than the upper end position of the moving engagement portion 2e, the stopper portion 1c is not in contact with the stopper 2f. No.

  Next, the operation of the seat slide device will be described.

  According to the present invention, the movable engagement portion 2e is formed in advance in the upward bending portion 2a of the upper rail 2, while the stopper portion 1c at the front and rear positions of the lower rail 1 and the upper portion of the downward bending portion 1a is to be provided. A pair of cuts 1b parallel to each other and a cut connecting the pair of cuts 1b are formed. Next, when assembling the upper rail 2 to the lower rail 1, the upper bent portion 2a of the upper rail 2 is inserted into the lower bent portion 1a of the lower rail 1, and the upper rail 2 is inserted into the opening of the lower rail 1 and assembled. Thereafter, the portion between the portions of the lower rail 1 where the parallel cuts 1b are provided is pressed and protruded into the downward bent portion 1a to form the stopper portion 1c. As a result, the movement of the moving engagement portion 2e is restrained by the stopper portion 1c, so that the upper rail 2 cannot be extracted from the lower rail 1.

  Further, when the upper rail 2 is moved with respect to the lower rail 1, the moving engagement portion 2 e that moves together with the upper rail 2 comes into contact with one of the pair of stopper portions 1 c before and after the lower rail 1, and the movement of the upper rail 2 The stroke is determined.

  When the upper rail 2 is locked at an arbitrary slide position, as shown in FIGS. 4 and 6, the lock claw 9 receives the urging force of the leaf spring 10 and is rotated and displaced counterclockwise. Is engaged across the three of the holding hole 14 of the upper rail 2, the fitting hole 16 of the lower rail 1, and the holding hole 15 of the upper rail 2, so that the upper rail 2 is locked to the lower rail 1.

  When changing the slide position of the upper rail 2 from the state of FIG. 4 and FIG. 6, the operation handle 20 is rotated by pulling the front position of the vehicle body upward. Then, in FIG. 2B, the holder 19 rotates clockwise about the horizontal axis 18 and the engaging portion 19 a rises, so that the crank portion 8 a resists the urging force of the leaf spring 10 and the support rod 8. 2A, the lock claw 9 is pulled out from the three of the holding hole 14, the fitting hole 16, and the holding hole 15, as shown in FIGS. . Therefore, the upper rail 2 can be freely slid. In this state, when the seat slide position is changed to an arbitrary position and then the operation handle 20 is released, the crank portion 8a is rotated approximately 45 in the counterclockwise direction by the urging force of the return spring 12 and the urging force of the leaf spring 10. 4 and FIG. 6, the lock claw 9 returns to its original state, and again engages with the holding hole 14, the fitting hole 16, and the holding hole 15. For this reason, the upper rail 2 is locked again. Although the same FIG. 6 is used to show the locked state before and after the upper rail 2 is moved, the position of the upper rail 2 is actually different after the movement.

  According to the present invention, the upper portion of the upward bent portion 2a of the upper rail 2 where the holding hole 15 is formed is also used as the moving engagement portion 2e, so that the upper rail 2 is moved and engaged at the same position in the length direction. Processing of the part 2e and the holding hole 15 can be performed collectively, and processing workability is good.

  Although the present embodiment shows the case where the lock claw is arranged inside the upper rail, it can also be arranged outside the upper rail.

It is related with the principal part of the vehicle seat slide apparatus, (a) is a cross-sectional view, (b) is an AA arrow line view of (a) (embodiment). 1 is a side cross-sectional view, and FIG. 2B is a front view (embodiment). A perspective view of a seat slide device of a vehicle (embodiment). FIG. 4A is a side sectional view, and FIG. 4B is a front sectional view (embodiment) when a seat slide device of a vehicle is locked. FIG. 4A is a side sectional view, and FIG. 5B is a front sectional view (embodiment) when unlocking a seat slide device of a vehicle. A front view at the time of lock of a seat slide device of vehicles (embodiment). The front view at the time of lock release of the seat slide apparatus of vehicles (embodiment).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Lower rail 1a ... Downward bending part 1c ... Stopper part 2 ... Upper rail 2a ... Upward bending part 2e ... Moving engagement part
2f ... Stopping
3 ... Retainer
4, 5 ... Guide ball 9 ... Lock claw 15 ... Holding hole 16 ... Fitting hole

Claims (2)

An upper rail fixed to a seat is slidably assembled to a lower rail fixed to a vehicle floor, and the lower rail is bent and formed into a substantially U-shape with an upper portion opened, and from the upper portion to the inner side of the upper portion. While the downward bent portion is continuously formed, the upper rail is bent into a substantially U-shape with the lower portion opened, and the upward bent portion is continuously formed from the lower portion outside the lower portion. The upper rail is inserted into the opening of the lower rail, and the upward bending portion enters from below the downward bending portion, and is held by a retainer between the upward bending portion and the lower rail. guide ball is provided, the latch for restricting the retainer from coming off the upper rail is provided on the upper rail, the relative said lower rail In the seat slide apparatus for a vehicle locking mechanism is provided for locking the Ppareru,
A moving engagement portion that protrudes upward is provided at the upward bending portion of the upper rail , and the anti-separation of the same height as the upward bending portion is provided on both sides in the front-rear direction of the movement engagement portion. while Ru is provided by bending toward the outside, the position of the front and rear of the lower rail by projecting an upper portion of the downward bent portion to the interior of the downward bent portion, an end portion of the movable engagement portion is in contact pair A vehicle seat slide device, characterized in that a stopper portion is formed.   2. The vehicle seat slide device according to claim 1, wherein the lock mechanism includes a lock claw rotatably provided on the upper rail at a fitting hole formed on the lower rail and the upward bent portion of the upper rail. A vehicle seat slide device characterized by being configured to be inserted into and removed from a formed holding hole, and the moving engagement portion being disposed above the holding hole.

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