JP2018197088A - Seat rail device - Google Patents

Abstract

To provide a seat rail device including a lock mechanism that is imparted with a separation prevention mechanism.SOLUTION: A lateral slide rail 10 is provided with a third standing wall 58f of a support bracket 58 of a lock member in suspending walls 22, 22 facing an upper rail 20 while interposing a slight clearance between them, whereby the suspending walls 22, 22 facing the upper rail deform so as to come close to each other with the impact at vehicle collision and a lower rail is prevented from coming off from the upper rail. Thus, separation strength of a seat rail device can be enhanced using lock function.SELECTED DRAWING: Figure 4

Description

The present invention relates to a seat rail device for adjusting a vehicle seat position.

Patent Document 1 discloses a configuration in which a reinforcement rail is attached to an outer surface of a seat rail main body at an end portion in the extending direction of the seat rail main body to suppress deformation of the seat rail.

JP 2017-13639 A

In Patent Document 1, since the reinforcing member is provided separately from the lock mechanism, there arises a problem of an increase in weight and an increase in manufacturing cost.

An object of the present invention is to provide a seat rail device in which a function of preventing peeling is added to a lock mechanism.

The seat rail device according to the present invention includes a lower rail (30), an upper rail (20) fixed to a seat and slidably provided with respect to the lower rail, and a lock that locks the upper rail with respect to the lower rail. A mechanism (50). The lower rail (30) extends inward from the bottom wall (32), opposed standing walls (33) formed on both sides of the bottom wall along the sliding direction, and the upper end of the compatibility wall. The upper rail (20) slides on both sides of the upper wall (21) on which the fixing member to the seat is provided and the first L-shaped portion (34, 35) whose side ends are directed downward. An opposing hanging wall (22) formed along the moving direction, and a second L extending outward from the lower ends of the both hanging walls and having side edges directed upward and surrounding the side edges of the first L-shaped portion. It consists of character parts (23, 24). The locking mechanism passes through a first opening (35a) provided on the side end side of the first L-shaped portion of the lower rail and a second opening (22a) provided in one hanging wall of the upper rail. The lock claw (52a) is formed with a lever (52), a shaft (56) for rotatably supporting the lever, and a support bracket (58) for supporting the shaft. 52a) is formed so as to be directed obliquely downward in a locked state, and the support bracket (58) includes a first standing wall (58a) provided with through holes (58aa, 58ba) for supporting both ends of the shaft. A second standing wall (58b), a connecting portion (58c) provided between the first standing wall and the upper part of the second standing wall, and provided in a sliding direction from the bottom of the first standing wall, the bottom of the lower rail Because it is fixed in contact with the wall A first bottom wall (58d) and a second bottom wall (58e) provided in a direction opposite to the first bottom wall from the bottom of the second standing wall and fixed in contact with the bottom wall of the lower rail And a third standing wall (58f) which stands up from an end of the second bottom wall opposite to the second standing wall and is formed to provide a slight clearance between the hanging walls of the upper rail. .

In the seat rail device of the present invention, the third standing wall of the support bracket, which is a component of the lock mechanism, is provided in the hanging wall facing the upper rail with a slight clearance. The lower rail can be prevented from coming out of the upper rail by being deformed so that the opposing hanging walls of the upper rail approach each other, and the peeling strength of the seat rail device can be increased by using the lock function.

In the aspect of Claim 2, since the 3rd standing wall is provided in the position corresponding to the edge part of the lower rail which is the weakest to stress and is easy to deform | transform, it can raise the peeling strength of a seat rail apparatus.

According to the third aspect of the present invention, the lock claw, which is a component of the lock mechanism, is provided so as to be directed obliquely downward to the rear of the vehicle. However, this force makes it difficult to remove the lock claw. For this reason, the peeling strength of a seat rail apparatus can be raised using a lock function.

According to the aspect of the present invention, the seat rail device is accommodated in the U-shaped notch provided in the metal wall constituting the riser. Therefore, the seat rail device synergizes with the third standing wall and receives an impact at the time of a vehicle collision. Can be prevented, and the peeling strength of the horizontal slide rail can be increased by using a riser as a support member.

In the configuration of claim 5, the seat rail device is disposed in a U-shaped cutout provided in the metal wall constituting the riser and in the cross-sectional box-shaped reinforcing bracket. It is possible to prevent the seat rail device from opening due to an impact at the time of collision, and to increase the peel strength of the lateral slide rail.

Sectional drawing of the horizontal slide rail which concerns on embodiment of this invention. The perspective view of the locking member of the horizontal slide rail of embodiment. The perspective view of the component of the locking member of the horizontal slide rail of embodiment. The front view of the horizontal slide rail which concerns on embodiment. The side view of the horizontal slide rail of embodiment. The top view of the horizontal slide rail of embodiment. The top view of the seat rail device concerning an embodiment.

FIG. 7 is a plan view of the seat rail device according to the embodiment.
The seat rail device 100 is fixed to a vehicle floor, and a pair of front and rear slide rails 110 and 110 that allow a vehicle seat (not shown) to move in the vehicle front-rear direction and a pair of lateral slide rails that allow the seat to move in the left-right direction 10 and 10 and a pair of risers 80 and 80 for supporting the horizontal slide rail 10 on the front and rear slide rail 110. The lower rail 130 of the front / rear slide rail 110 is fixed to the vehicle floor, and the riser 80 is fixed to the upper rail 120 supported so as to be slidable in the vehicle front-rear direction with respect to the lower rail 130.

FIG. 6 is a plan view of the lateral slide rail 10 and the riser 80. FIG. 5 is a side view of the lateral slide rail 10 and the riser 80, and corresponds to a view taken in the direction of arrow X in FIG. 4 is a front view of the lateral slide rail 10 and the riser 80, and corresponds to a view taken in the direction of arrow Y in FIG.

FIG. 1 is a y1-y1 cross-sectional view of the horizontal slide rail 10 in FIG. 1A shows a locked state, and FIG. 1B shows an unlocked state.
The lower rail 30 is provided with a bottom wall 32 that is substantially horizontal to the vehicle body, a standing wall 33 that rises upward from both ends of the bottom wall 32, and a center wall that extends from the upper end of the compatibility wall 33 toward the center and is substantially parallel to the bottom wall 32. And a hanging wall 35 that hangs from the ends of both flanges 34 toward the bottom wall 32 and substantially parallel to the standing wall 33. The collar part 34 and the hanging wall 35 constitute a first L-shaped part (34, 35). One hanging wall 35 of the lower rail 30 is provided with a first opening 35a so as not to contact the lock claw 52a of the lock member 50 in the locked state. The lateral slide rail 10 is formed so that the vehicle seat can be locked at two positions, a right end position immediately above the front and rear slide rails 110, 110 and a left end position where the vehicle seat has moved to the left as much as possible. The opening 35a is arranged so that it can be locked at the right end position and the left end position.

The upper rail 20 has a vehicle seat attached via bolts 96, an upper wall 21 that faces the bottom wall 32 of the lower rail 30, a hanging wall 22 that hangs down from both ends of the upper wall 21, and both hanging walls 22. And an extending portion 23 that bends and extends outwardly from the lower end of each of the first and second walls 25 and a standing wall 25 that stands upward from the extending portion. The extending part 23 and the standing wall 25 constitute a second L-shaped part (23, 25). The second L-shaped portion (23, 25) is surrounded by the first L-shaped portion (34, 35) of the lower rail 30. An inclined portion 24 that holds the first steel ball 41 of the retainer 40 in the space between the lower rail 30 is provided at the upper end of the standing wall 25. Moreover, the second opening 22a is provided in one hanging wall 22 so that it may not contact the lock nail | claw 52a similarly to the 1st opening 35a.

In the upper rail 20 and the lower rail 30, the upper wall 21 of the upper rail 20 faces the bottom wall 32 of the lower rail 30, and the inclined portion 24 of the upper rail 20 enters the space between the standing wall 33 and the hanging wall 35 of the lower rail 30. Is arranged. The first steel balls 41 of the retainer 40 are disposed between the corner portion between the standing wall 33 of the lower rail 30 and the flange portion 34 and the inclined portion 24 of the upper rail 20, and the bottom wall 32 and the standing wall 33 of the lower rail 30 are disposed. The second steel ball 42 of the retainer 40 is disposed between the corner portion between the upper rail and the extended portion 23 of the upper rail. By the first steel ball 41 and the second steel ball 42 held by the retainer 40, the upper rail 20 and the lower rail 30 can slide relative to each other in the vehicle lateral direction.

The lock member 50 is a lock mechanism for fixing (locking) the upper rail 20 and the lower rail 30 so as not to move relative to each other. The lock member 50 is supported so as to be rotatable (displaceable) about a shaft 56 with respect to a support bracket 58 fixed to the bottom wall 32 of the lower rail 30 with a rivet or the like. A lock claw 52a that engages and disengages with respect to the first opening 35a is formed. The lock member 50 is always urged by a lock spring 54 provided on the shaft 56 in a direction in which the lock claw 52 a is inserted into the second opening 22 a of the upper rail 20.

FIG. 2 is a perspective view of the lock member 50, and FIG. 3 is a perspective view of components of the lock member 50.
The lock member 50 includes a lock lever 52 having a lock claw 52a, a shaft 56 for rotating the lock lever 52, a support bracket 58 for supporting the shaft 56, and a lock for urging the lock lever in the lock direction. A spring 54. The support bracket 58 is provided between the first standing wall 58a provided with the through hole 58aa for supporting the shaft 56, the second standing wall 58b provided with the through hole 58ba, and the upper part of the first standing wall 58a and the second standing wall 58b. From the bottom of the first standing wall 58a, the first bottom wall 58d that is provided in the sliding direction from the bottom of the first standing wall 58a, and is fixed in contact with the bottom wall 32 of the lower rail 30; A second bottom wall 58e that is provided in a direction opposite to the first bottom wall 59d and is in contact with and fixed to the bottom wall 32 of the lower rail 30, and an end of the second bottom wall 58e opposite to the second standing wall 58b. As shown in FIG. 4, a third standing wall 58f is formed so as to provide a slight clearance between the hanging walls 22 of the upper rail 20 as shown in FIG.

The lock lever 52 includes a lever portion 52d, a lock claw 52a provided at the opposite end of the lever portion 52d, support pieces 52b and 52c provided at both ends in the sliding direction of the lever portion 52d, and a shaft 56 on the support piece 52b. The opening 52ba is provided for inserting the shaft 56, and the opening 52ca is provided for inserting the shaft 56 through the support piece 52c. As shown in FIG. 1A, the lever portion 52d is bent into an obtuse angle at the center. The lock claw 52a is bent at an acute angle and is formed so as to be directed rearward and obliquely downward in the locked state. The lock claw 52a is urged in the locking direction shown in FIG. 1A by the lock spring 54, and as shown in FIG. 1B, the lock lever 52 is operated around the shaft 56 in the drawing. It is turned counterclockwise and the locked state is released. As shown in FIG. 2, the lock claw 52a includes two claws. The first opening 35a and the second opening 22a through which the lock claw 52a described above with reference to FIG. 1 is inserted include a pair of openings into which two claws enter. As shown in FIGS. 4 and 7, the horizontal slide rail 10 has a box-shaped reinforcing metal fitting 92 having a slit 92a formed along the sliding direction on the upper surface 92U, and a slit 94a formed along the sliding direction on the upper surface 94U. Are provided in a reinforcing metal fitting 94 having a box shape in cross section.

As shown in FIGS. 4, 5, and 7, the riser 80 is a single metal plate having both side portions constituting a pair of metal walls 82 and 84 and a central portion 86 existing between the both side portions. Consists of. The metal wall 82 is provided with a U-shaped notch 82a, and the metal wall 84 is provided with a U-shaped notch 84a having the same shape as that of the notch 82a and shown in FIG. Reinforcing metal fittings 92 and 94 having a box-shaped cross section for accommodating the horizontal slide rail 10 are accommodated in a notch 82 a of the metal wall 82 and a U-shaped notch 84 a of the metal wall 84, and the bottom wall of the reinforcing metal fitting 92. 92 b and the bottom wall 94 b of the reinforcing metal fitting 94 are fixed to the central portion 86 of the riser 80. As shown in FIG. 4, a reinforcing member 70 for reinforcing the riser is provided below the U-shaped notch 82a. As shown in FIG. 5, the reinforcing member 70 has a central portion 76 that faces the central portion 86 of the riser, and a pair of side walls 72 and 74 that contact the outside of the metal walls 82 and 84 on both sides of the riser. . A U-shaped cutout 72a surrounding the lower portion of the U-shaped cutout 82a of the riser 80 shown in FIG. 4 is provided on the side wall 72 only in the arrangement position in FIG. 7 having the same shape as the U-shaped cutout 72a. A U-shaped notch 74 a is provided on the side wall 74.

As described above with reference to FIG. 4, in the seat rail device 100 according to the embodiment, a slight clearance is interposed between the opposed hanging walls 22, 22 of the upper rail 20 of the lateral slide rail 10, so that it is a component of the lock mechanism. A third standing wall 58f of a certain support bracket 58 is provided. For this reason, it is possible to prevent the lower rail from coming out of the upper rail by being deformed so that the depending walls 22 and 22 facing the upper rail approach each other due to an impact at the time of a vehicle collision, and using the locking function, the peeling strength of the seat rail device Can be increased.

As shown in FIGS. 5 and 6, the third standing wall 58 f of the support bracket 58 described above is provided corresponding to the left end 30 </ b> L of the lower rail 30. In the seat rail device according to the embodiment, the third standing wall 58f is provided at a position corresponding to the end portion 30L of the lower rail 30 that is weakest to stress and easily deforms, and therefore, the peel strength of the seat rail device can be increased.

As described above with reference to FIG. 1, in the seat rail device of the embodiment, the lock claw 52a that is a component part of the lock mechanism is provided so as to be directed obliquely downward at the rear of the vehicle, and is locked so as to turn from above. A load is applied to the upper rail fixed to the seat at the time of a vehicle collision obliquely upward on the front side of the vehicle, but the lock claw is difficult to come off due to this load. For this reason, the peeling strength of a seat rail apparatus can be raised using a lock function.

As shown in FIG. 6, the horizontal slide rail 10 is accommodated in the U-shaped notches 82 a and 84 a of the metal walls 82 and 84 of the riser 80. The lock claw 52 a is held at a position corresponding to the metal wall 84.

In the seat rail device of the embodiment, the horizontal slide rail 10 is accommodated in the U-shaped cutouts 82a and 84a provided in the metal walls 82 and 84 constituting the riser 80, and thus synergizes with the third standing wall 58f. The lateral slide rail 10 can be prevented from opening due to an impact at the time of a vehicle collision by the side surfaces 82aa and 84aa of the notches 82a and 84a.

Further, the lateral slide rail 10 is disposed in U-shaped cutouts 82a and 84a provided in the metal walls 82 and 84 constituting the riser 80, and in the reinforcing brackets 92 and 94 having a box-like cross section. Therefore, it is possible to prevent the seat rail device from opening due to an impact at the time of a vehicle collision, and to increase the peel strength of the lateral slide rail.

DESCRIPTION OF SYMBOLS 10 Side slide rail 20 Upper rail 21 Upper wall 22 Hanging wall 22a 2nd opening 30 Lower rail 32 Bottom wall 33 Standing wall 35a 1st opening 50 Lock member 52a Lock claw 56 Shaft 58 Support bracket 58f 3rd standing wall 70 Reinforcement member 80 Riser 82, 84 Metal wall 82a, 84a Notch 92 Reinforcing bracket

Claims (5)

A seat rail device comprising: a lower rail; an upper rail fixed to a seat and provided slidably with respect to the lower rail; and a lock mechanism that locks the upper rail with respect to the lower rail,
The lower rail has a bottom wall, opposing standing walls formed along the sliding direction on both sides of the bottom wall, and a first L-shape extending inward from the upper end of the coexistence wall and having a side end directed downward. And consists of
The upper rail extends to the outside from the lower wall of the upper wall, the upper wall where the fixing member to the seat is provided, the opposing hanging wall formed on both sides of the upper wall along the sliding direction, and the lower wall of the both hanging walls. The second end of the first L-shaped portion and the second L-shaped portion surrounding the side end of the first L-shaped portion.
The locking mechanism is
A lever formed with a lock claw capable of being inserted through a first opening provided on the side end side of the first L-shaped portion of the lower rail and a second opening provided on one hanging wall of the upper rail;
A shaft that rotatably supports the lever;
A support bracket for supporting the shaft;
The lock claw is formed so as to be directed obliquely downward in a locked state,
The support bracket is
A first standing wall and a second standing wall provided with through holes for supporting both ends of the shaft;
A connecting portion provided between upper portions of the first standing wall and the second standing wall;
A first bottom wall that is provided in a sliding direction from the bottom of the first standing wall and is fixed in contact with the bottom wall of the lower rail;
A second bottom wall provided in a direction opposite to the first bottom wall from the bottom of the second standing wall, and abutting and fixing to the bottom wall of the lower rail;
A third standing wall that rises from an end of the second bottom wall opposite to the second standing wall and is formed so as to provide a slight clearance between the hanging walls of the upper rail. The seat rail device according to claim 1,
The third standing wall is provided at a position corresponding to an end portion of the lower rail. The seat rail device according to claim 1 or 2,
The seat rail device constitutes a lateral slide mechanism that enables the seat to move laterally,
The lock claw is provided so as to be directed toward the rear of the vehicle. The seat rail device according to claim 3,
The seat rail device constituting the lateral slide mechanism is supported via a pair of risers on a pair of front and rear slide rails that enable the seat to move in the vehicle front-rear direction.
The riser comprises a metal wall;
A U-shaped notch is provided in the metal wall,
The seat rail device constituting the lateral slide mechanism is accommodated in the U-shaped notch, and the lock claw is held at a position corresponding to the metal wall. The seat rail device according to claim 4,
A box-shaped reinforcing bracket having a slit formed in the upper surface in the sliding direction is provided in the U-shaped cutout, and the seat rail device constituting the lateral sliding mechanism is disposed in the reinforcing bracket. Has been.

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