JPH0726237U - Seat adjuster locking device - Google Patents

Abstract

(57) [Abstract] [Purpose] To reduce the size of a locking device for a seat adjuster in a vehicle and to make the structure robust against an impact applied to the seat. [Structure] In a traveling material that selectively slides on a rail material fixed to a chassis floor of a vehicle to set the front and rear positions of a seat sheet, the traveling material is fixed to the rail material. The lock mechanism is configured so as to support both ends on both sides in the transverse direction of the traveling material, and the spring for imparting an urging force to the lock is housed in a narrow space of the traveling material, and the urging force generated from the housing of such sprinkles. The deviation in the direction is eliminated by providing the sliding guide wall surfaces on both sides of the lock.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lock device for a seat adjuster used for a chair of a vehicle such as an automobile.

[0002]

[Prior art]

 FIG. 8 shows a side view of the seat 7 fixedly mounted on the floor 8 of the vehicle. On the rail material 11 fixedly mounted on the floor 8, the rail material 11 is slid and the seat 7 is fixed. A traveling member 12 is provided to properly adjust the vehicle front-rear position. A set of the rail material 11 and the traveling material 12 is provided on the left and right sides of the seat 7. FIG. 7 shows a cross section of the rail material 11 and the traveling material 12 on the right-hand side when a person is seated on the seat 7, and FIG. 9 shows the rail material 11 alone in FIG. FIG. 10 shows an arrow view in FIG.

In FIG. 7, a running material 12 is provided in a state of wrapping the rail material 11, and is formed by a side wall 11b and a flange 11d of the rail material 11 and a side wall 12b of the running material 12 and a flange 12d. Balls 15 and 15 are provided in the square-shaped space and in the square-shaped space formed by the side wall 11c and the flange 11e of the rail material 11 and the side wall 12c and the flange 12e of the traveling material 12, respectively. The roller 16 is inserted between the bottom portion 11a of the rail material 11 and the ceiling plate 12a of the traveling material 12.

The holding material 12A spot-welded to the upper portion of the ceiling plate 12a is provided with guide holes 12f and 12g, respectively. The bar-shaped lock 13 is always inserted in the guide holes 12f and 12g and the guide groove 12h in the traveling material 12, and the tip of the lock 13 is selectively inserted into the lock hole 11f provided in the rail material 11. It is configured to be.

As shown in FIG. 10, the lever 14 is formed by fitting the pin 14b fitted to the holding material 12A so as to be slidably rotatable around the pin 14b and bending the tip of the lever 14. The claw 14a is inserted into a hole 13a provided in the lock 13, and a coil spring 12B is provided between the claw 14a and the wall surface 12i of the holding member 12.

The operation of the conventional lock device for the sheet adjuster is as follows. When the lever 14 is turned in the direction of the arrow c around the pin 14b, the pawl 14a moves the lock 13 to the right in FIG. 10 through the hole 13a, and as a result, the tip of the lock 13 comes out of the lock hole 11f. become.

In this state, the seat 7 having the running material 12 fixed to the bottom portion can be moved to a required position in the front and rear direction of the vehicle. When the seat 7 is moved to the required position and the hand is released from the lever 14, the biasing force of the spring 12B urges the lock 13 to the lock hole 11f side through the pawl 14a and the hole 13a to lock it. The tip of 13 is inserted into the lock hole 11f. In this state, the seat 7 is fixed to the rail material 11. That is, the lock 13 functions as a bar between the rail material 11 and the traveling material 12, thereby locking the seat 7 on the floor 8.

[0008]

[Problems to be solved by the device]

 Such a seat adjuster is capable of adjusting the position of the seat in consideration of the comfort of riding and ease of driving, and the existence of the seat adjuster is not required by the times. is there. On the other hand, in recent automobiles, it is required to reduce the vehicle height as much as possible in order to reduce the running air resistance. As a result, the height of the seats in the passenger compartment is inevitably reduced.

Further, in recent years, the rate of using electronic circuits in a control system of an automobile has increased, and a place under the seat that can be placed in the automobile has been demanded as a place for installing these electronic circuits. For this reason, the seat adjusters provided under these seats are required to be further miniaturized in a narrow space between the seat and the floor.

On the other hand, in the lock mounting portion of the conventional seat adjuster shown in FIGS. 7 to 10, the spring 12B is provided in the lateral direction of the traveling member 12, so that the lock 13 and the retaining member 12A are provided. As a result, the running material 12 largely protrudes in the lateral direction, and that portion occupies a large space under the seat. It is an object of the present invention to provide a seat adjuster locking device that can make the space under the seat wider.

[0011]

[Means for Solving the Problems]

 In the seat adjuster, a rail member fixed on the vehicle floor in the front-rear direction and a rail member fixed on the bottom of the seat and sliding on the rail member in the front-rear direction on the rail. Both the running material and the running material that are fixed at arbitrary positions have the following configurations. The rail material has a U-shaped cross-section in the front-rear direction, with its U-shaped opening facing upward, and the upper portions of the side walls formed on both sides of the opening facing upward, respectively. It is a flange that is bent horizontally to the left and right of the open part. The running material has a U-shaped cross-section in the front-rear direction, with the open part of the U-shape facing downward, and the lower part of each side wall formed on both sides of the open part facing downward. Each has a flange that is bent horizontally to the left and right inside.

The horizontal outer edges of both flanges of the rail material are housed inside both side walls of the running material, and the both side walls of the rail material are housed inside each flange horizontally of the running material. There is. Due to such an assembling configuration of the rail material and the traveling material, in the cross-section with respect to the longitudinal direction of the rail material, the rail material is provided on both sides in the horizontal direction of both side walls of the rail material, respectively. The side wall and the flange of the running material and the side wall and the flange of the running material form a square-shaped space. A ball for sliding guide of running material is inserted in the square space. Between the lower bottom part of the rail material with respect to the upper open part and the upper ceiling plate with respect to the lower open part of the traveling material, the traveling material slides in the front and rear direction of the vehicle with respect to the rail material. The roller that enables it is inserted.

The above-mentioned structure of the sheet adjuster is the same as the conventional structure. In the above structure, the present invention is characterized by the structure of the lock device portion described below. At a position in the vehicle front-rear direction where the ball and the roller do not exist, the ceiling plate of the traveling material is raised above. A guide hole that is provided in the horizontal direction is formed on the side wall surface in the front-rear direction that corresponds to the raised portion.

In the running material, a guide groove is provided on the flange on the side opposite to the guide hole in the horizontal direction, and the rail material is locked at the same height position as the guide groove and at a plurality of positions in the front-rear direction. It has a hole. A bar-shaped lock is inserted in the guide hole so as to be slidable in the horizontal direction. The lock forms a vertical part that is bent downward in both side walls of the rail material, and is bent toward the lock hole side at the height position of the lock hole of the vertical part, and the bent part is bent. The tip is a nail.

In the raised portion of the ceiling plate, guide walls for horizontally sliding the lock are provided on both sides of the lock in the vehicle front-rear direction. One end of the spring is fixed to the ceiling plate at a position different from the position of the lock in the vehicle front-rear direction, and the other end of the spring is directed to the vertical portion of the lock from the inner hole side toward the guide groove side. To give support.

[0016]

【Example】

 FIG. 1 is a cross-sectional view showing a locking device of a seat adjuster according to the present invention, and the drawing corresponds to FIG. 7 of the above-mentioned conventional description. 2 shows a view of the rail material 1 in FIG. 1 only in the direction of arrow C, FIG. 3 shows a view of the rail material 1 in FIG. 1 with the rail material 1 removed, and FIG. FIG. 5 is an enlarged view of the roll cross section, FIG. 5 shows the arrow 2g of the guide hole 2g in FIG. 1, and FIG. 6 shows the cross section of only the traveling material 2 in FIG.

Here, the rail material 1 and the traveling material 2 in FIG. 1 correspond to the conventional rail material 11 and the traveling material 12 in FIG. 8, respectively, and the rail material 1 and the traveling material 2 of the present invention. Is used in place of the rail material 11 and the traveling material 12 in these conventional cases. A rail material 1 fixed on the chassis floor 8 (Fig. 8) of the automobile in the front-rear direction of the vehicle, and fixed on the bottom of the seat 7 and sliding on the rail material 1 Both of the traveling materials 2 fixed to arbitrary positions in the front-rear direction on the material 1 have the following configurations.

The rail material 1 has a U-shaped cross-section as shown in FIG. 1 in the vehicle front-rear direction. The U-shaped open portion faces upward, and the rail material 1 is formed on both sides of the open portion facing upward. The upper portions of the side walls 1b and 1c are flanges 1d and 1e that are horizontally bent to the left and right outside of the open portion, respectively. The traveling material 2 has a U-shaped cross section in the front-rear direction with its open portion facing downward, and the lower portions of the side walls 2c and 2d formed on both sides of the open portion facing downward. , And flanges 2e and 2f that are horizontally bent inwardly on the left and right sides, respectively.

The horizontal outer edges of the flanges 1d and 1e of the rail material 1 are housed inside the side walls 2c and 2d of the running material 2, and the side walls 1b and 1c of the rail material 1 are The traveling material 2 is housed inside the respective flanges 2e and 2f in the horizontal direction.

Due to the assembly configuration of the rail material 1 and the traveling material 2 as described above, in the cross-section of the rail material 1 (FIG. 1), the side walls 1b and 1c of the rail material 1 in the horizontal direction are parallel to each other. A side wall 1b and a flange 1d of the rail material 1 and a square space formed by the side wall 2c and the flange 2e of the traveling material 2 and a side wall of the rail material 1 are formed on both sides (left and right sides in FIG. 1), respectively. 1 c and the flange 1 e, and both of the side wall 2 d of the traveling material 2 and the square-shaped space formed by the flange 2 f are formed.

Balls 5 and 5 for bearings are inserted in the square-shaped spaces. Between the bottom portion 1a of the rail material 1 below the upper opening portion and the upper ceiling plate 2a of the travel material 2 above the lower opening portion, the traveling material 2 with respect to the rail material 1 extends in the vehicle longitudinal direction. The roller 6 is inserted to enable sliding to the. The balls 5 and 5 and the rollers 6 are provided on the upper side of the projection 2k on the upper side of the paper in FIG. 3 and on the lower side of the projection 2k on the lower side of the paper in FIG.

At a position in the vehicle front-rear direction where the balls 5 and 5 and the rollers 6 do not exist, a part of the ceiling plate 2a of the traveling material 2 is lifted up and the lifted portion 2b (FIG. 1, FIG. 4). ). A guide hole 2g (Fig. 1) provided in the horizontal direction is formed on the side wall surface of the raised portion.

In the running material 2, a guide groove 2h is provided in a flange 2e located on the opposite side in the horizontal direction with respect to the guide hole 2g, and the rail material 1 has the same height position as the guide groove 2h. 1f (FIGS. 1 and 2) are opened at a plurality of positions in the longitudinal direction of the rail material 1. A lock-like lock 3 is inserted into the guide hole 2g so as to be slidable in the horizontal direction, and the lock 3 is a vertical bent downward in both side walls 1b and 1c of the rail material 1. The portion 3c is formed, and is bent toward the lock hole 1f at the height position of the lock hole 1f in the vertical portion 3c, and the bent tip is used as the claw 3a.

The guide plate 2A (FIG. 4) is spot-welded to the raised portion 2b. In the raised portion 2b of the ceiling plate 2a, guide walls 2i, 2i for horizontally sliding the lock 3 are provided on both sides of the lock 3 in the vehicle front-rear direction (upper and lower directions in FIG. 4). In the vertical portion 3c of the lock 3, at the raised portion 2b at a position different from the position of the lock 3 in the vehicle front-rear direction, the coil portion of the spring 2B is inserted into the protrusion 2j portion of the bent guide plate 2A, and one end thereof is inserted. 2n (FIG. 3) is locked to the guide plate 2A. The other end 2p (FIG. 3) of the spring 2B applies an urging force to the vertical portion 3c from the side of the guide hole 2g toward the side of the guide groove 2h.

The lock 3 is provided with a guide hole 3b, and the pawl 4a of the lever 4 is inserted into the guide hole 3b. A pin 2m (Fig. 3) is fitted to the stay-2C spot-welded onto the ceiling plate 2a of the running material 2, and a lever-4 is fitted to the pin 2m so as to be rotatable around the pin 2m. It

The operation of the above-described embodiment of the present invention will be described below. The state shown in FIGS. 1 and 3 in which the hand is removed from the lever-4 shows a state in which the traveling material 2 is locked with respect to the rail material 1. That is, as a result of the tip 2p of the spring 2B urging the vertical portion 3c of the lock 3 to the left in FIG. 3, the vertical portion 3c is urged until it abuts the side wall 1b, and the pawl 3a locks the lock hole 1f. The lock 3 is passed through and inserted into the guide hole 2h. The lock 3 is supported by the traveling member 2 on both sides of the guide hole 2g and the guide groove 2h, and inside the supported portion, the lock 3 is passed through the lock hole 1f, that is, the seat. 7 is fixed to the rail material 1.

Here, the spring 2B gives an urging force to the lock 3 at a position in the side walls 1b and 1c different from the sliding direction line of the lock 3. It fixes one end of the spring 2B at a position (position of the protrusion 2 j) different from the position of the lock 3 in the longitudinal direction of the running material 2 and is apart from the fixed position in the longitudinal direction (position of the vertical portion 3c). In, the other end 2p of the spring 2B gives an urging force to the lock 3.

As a result, the direction of the urging force is the direction in which the other end 2p rotates around the protrusion 2j that is the fixed point of the spring 2B. That is, this biasing force direction is different from the sliding direction required for the lock 3, and is a direction component that twists the sliding of the lock 3. For this reason, guide walls 2i and 2i (FIGS. 3 and 4) are provided on both sides of the lock 3 so that the rotating biasing force serves as a biasing component in the sliding direction.

Here, in the present invention, the spring device 2B is housed in both side walls 2c and 2d of the traveling member 2 to reduce the size of the lock device portion. However, in that case, it is space-wise difficult to directly apply the urging force to the sliding direction. Therefore, according to the present invention, the lock 3 is biased in its sliding direction without bending by the combination of the spring biasing force from the eccentric position in the longitudinal direction of the traveling member 2 and the guide walls 2i, 2i as described above. Is what you are doing.

With respect to the above-mentioned lock action, the operation for releasing the lock is as follows. When the lever 3 is rotated in the direction of arrow a (FIG. 3) about the pin 2m, the claw 4a is operated in accordance with the rotation. By that operation, the claw 4a moves the lock 3 in the direction of the arrow b through the guide hole 3b against the biasing force of the spring 2B. As a result, the claw 3a shown in FIG. 1 is pulled out to the right from the guide groove 2h and the lock hole 1f, and the lock is released.

In this state, the seat 7 is moved to an appropriate position in the front-rear direction of the vehicle. When the lever 4 is released in its proper position, the biasing force of the spring 2B biases the vertical portion 3c of the lock 3 to the left in FIG. 1 via the other end 2p. By this urging, the pawl 3a is inserted into one of the lock holes 1f arranged in the vehicle front-rear direction as shown in FIG. 2, and the pawl 3a further enters the guide groove 2h to complete the locking.

As described above, when the position of the seat 7 in the vehicle front-rear direction is adjusted and the hand is released from the lever 4, the pawl 3a is returned to the left in FIG. 1 by the urging force of the spring 2B. At this time, the claw 3a may be located between any one of the lock holes 1f shown in FIG. 2 and another lock hole 1f adjacent thereto, and the claw 3a may not be inserted into any of the lock holes 1f. In that case, the travel material 2 is finely adjusted to the rail material 1 to the relative position where the travel material 2 can be inserted, and the pawl 3a is inserted into the lock hole 1f and the guide groove 2h to complete the locking.

In the above embodiment, the spring 2B has a structure in which the coil-shaped portion is inserted into the protrusion 2j and one end 2n is locked to the guide plate 2A. However, it suffices that one end of the spring 2B is fixed to the raised portion 2b at the position of the protrusion 2j and the other end thereof applies a biasing force to the left side in FIG. 1 at the vertical portion 3c. Further, the lever 4 for unlocking the lock is not always necessary, and one end of the wire may be fixed to the guide hole 3b of the lock 3 and the other end of the wire may be pulled to unlock the lock.

[0034]

[Effect of device]

 1) By storing the spring 2B in both side walls 1b and 1c of the traveling material 2, it becomes possible to further reduce the size of the seat adjuster. 2) The spring 2B is provided eccentrically from the position of the lock 3 in the sliding direction, but by attaching both guide walls 2i, 2i, the movement of the lock 3 in the sliding direction is twisted. It enables smooth operation without any trouble.

3) Conventionally, the traveling material is fixed to the rail material by the lock by cantilever support of the lock. On the other hand, in the present invention, when the lock 3 is fixing the traveling material 2 to the rail material 1, in the state of supporting both ends at the positions of the guide hole 2g and the guide groove 2h of the traveling material 2. The lock hole 1f of the rail material 1 is held inside the both end supports. As a result, the locking device is compact and enables a robust structure.

In this case, the lock 3 needs to be inserted from the guide hole 2g side on one side wall 2d of the traveling member 2 to the guide groove 2h on the other side wall 2c side, but it is necessary for the insertion. In such a space, the space corresponding to the plate thickness of the lock 3 is increased only by raising the ceiling plate 2a of the running material 2.

4) In particular, in addition to supporting both ends, the presence of the guide plates 2i, 2i not only corrects the biasing force, but also reinforces the force applied to the lock 3 in the longitudinal direction of the running material 2. ing. This means that if a driver or the like sitting in the seat 7 squeezes the seat belt and a person is integrated with the seat, in the unlikely event that the vehicle causes a collision accident, Even if the lock 3 receives an impact due to the inertial force of the person and the seat due to a collision, the rigidity of the lock 3 can prevent the seat from being damaged and the person from jumping forward. This also contributes to safety measures. To do.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a locking device of a seat adjuster according to the present invention.

FIG. 2 shows a view of the rail material 1 in FIG.

FIG. 3 is a view on arrow B in a state where the rail material 1 in FIG. 1 is removed.

FIG. 4 shows a view on arrow in FIG.

FIG. 5 is a view of arrow A of only the traveling material 2 in FIG. 1.

FIG. 6 is a cross sectional view showing only the running material 2 in FIG.

FIG. 7 is a side sectional view showing a conventional locking device for a sheet adjuster.

FIG. 8 is a side view of a seat in a vehicle.

FIG. 9 is a view showing only the rail material 11 in FIG.

10 is a view showing an arrow view in FIG.

[Explanation of symbols]

1 rail material, 1a bottom part, 1b, 1c side wall,
1d, 1e flange, 1f lock hole, 2 running material,
2a Ceiling board, 2b Raised part, 2c, 2d
Side plate, 2e, 2f flange, 2g guide hole, 2
h guide groove, 2i guide wall, one end of 2n spring, the other end of 2p spring, 2A guide plate, 2B
Spring, 3 lock, 3a claw, 5 baud
Le, 6 rolls.

Claims (1)

[Scope of utility model registration request] 1. A rail fixed on the floor of the vehicle in the front-rear direction of the vehicle.
The lumber has a U-shaped cross-section in the front-rear direction, and the open portion of the U-shape faces upward, and the upper portions of the side walls formed on both sides of the open portion facing upward are respectively opened. The flange is bent horizontally to the left and right of the seat, is fixed to the bottom of the seat, and slides on the rail material to make the rail.
The running material that is fixed at any position in the front-rear direction on the rail has a U-shaped cross-section with respect to the front-rear direction. The lower portions of the side walls formed on both sides are flanges bent horizontally inward and leftward and rightward, respectively, and the horizontal outer edges of both flanges of the rail material are housed inside the both side walls of the running material. -In the transverse section, the both side walls of the lumber are housed inside the respective flanges of the running material in the horizontal direction,
On both sides in the horizontal direction of the both side walls of the rail material, the side wall and the flange of the rail material, respectively.
And each of the side walls and the flange of the traveling member form a square-shaped space, and a ball for sliding guide of the traveling member is inserted into the space of the square shape, and the space above the rail member is formed. Between the bottom portion formed below the open portion and the ceiling plate formed above the lower open portion of the traveling material, the traveling material relative to the rail material is provided. In the above-mentioned structure in which a roller that allows sliding in the vehicle front-rear direction is inserted, the ceiling plate of the traveling material at a position where the ball and the roller in the vehicle front-rear direction do not exist. Is raised upward, and a guide hole provided in the horizontal direction is formed on the side wall surface in the front-rear direction corresponding to the raised amount,
A guide groove is provided in the flange on the traveling material on the side opposite to the guide hole in the horizontal direction. In the rail material, a plurality of guide grooves are provided at the same height position as the guide groove. The lock having a lock hole formed at the position and inserted into the guide hole so as to be slidable in the horizontal direction is a vertical portion of the vertical portion bent downward in the side wall of the rail material. At the height position of the lock hole, the lock is bent toward the lock hole side to form a claw at its tip, and at the raised portion of the ceiling plate, the lock is horizontally arranged on both sides in the vehicle longitudinal direction of the lock. Is provided with a guide wall for sliding, and at the position different from the position of the lock in the vehicle front-rear direction, one end of the spring fixed to the ceiling plate of the traveling material is the other end of the spring. From the side of the guide groove Shi, characterized in that it provides a biasing force to the vertical portion of the lock towards - DOO adjuster of the locking device.