JPH0712162Y2 - Vehicle seat slide device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial Application Field >> The present invention relates to a vehicle seat slide device mounted on a vehicle such as an automobile.

<< Prior Art >> Conventionally, as shown in FIG. 6 to FIG. 8, while being fixed to the left and right lower rails 1, 1 fixed to the vehicle body and the seat side,
Left and right upper rails 2, 2 that are slidable relative to the left and right lower rails 1, a plurality of latch engagement holes 3 provided along the longitudinal direction of the left and right lower rails 1, 1 and provided on the upper rail 2 side Further, a pair of lock claws 4, 4 which engages with the latch engagement hole 3 at a desired slide position of the upper rail 2 in a disengageable manner are provided at the tip end thereof, and the lock claws 4, 4 are provided by a spring 5.
And a left and right lock mechanism 7,7 having a latch 6 biased in a direction to engage with the engagement hole 3,3, the lock claws 4,4 of the latch 6 and the engagement hole 3, of the lower rail 1. The release lever 8 for releasing the engagement with 3 is directly connected to the latch 6 of the lock mechanism 7 on one side (the left side in the drawing) and is connected to the latch 6 of the other lock mechanism 7 via the wire 9. A slide device for a vehicle seat is known from, for example, Japanese Utility Model Laid-Open No. 59-1635.

Reference numeral 10 in each drawing denotes a bracket fixed to the upper rail 2, and a release lever 8 is rotatably supported on the bracket 10. The latch 6 is slidably supported in support holes 11 and 12 formed in vertical walls 10a and 10b of the bracket 10 which face each other. The lock claws 4, 4 of the latch 6 pass through the guide hole 14 of the auxiliary plate 13 fixed to the upper rail 2 and the notch (not shown) formed in the side wall of the upper rail 2, and the engaging holes 3, 3 in the lower rail 1. Is engaged with.

Since the locking claws 4, 4 of the latch 6 of the left and right locking mechanism 7 are normally engaged with the engagement holes 3, 3 of the left and right lower rails 1 and are in a locked state, the seat does not slide in the front-back direction. .

When the release lever 8 is rotated in the direction of arrow A in FIG. 6 from this state, the latch 6 of the left lock mechanism 7 moves to the right against the biasing force of the spring 5 and the lock mechanism 7 on the right side. Since the latch 6 moves to the left against the biasing force of the spring 5, the lock claws 4, 4 of both latches 6 come off from the engaging holes 3, 3 of the left and right lower rails 1 and the locked state is released. The seat can slide in the front-back direction along the lower rail 1.

When the hand is released from the release lever 8 in this state, the release lever 8 is pivotally returned in the direction of the arrow B by the urging force of the spring 5, and the latches 6 of the left and right lock mechanisms 7 are returned to their original positions. The lock claws 4, 4 engage with the engagement holes 3, 3 of the lower rail 1 to be in the locked state again.

<< Problems to be Solved by the Invention >> In such a conventional slide device, the latch 6 of the lock mechanism 7 on one side (main side) is directly connected to the release lever 8 and the lock mechanism 7 on the other side (driven side) is The latch 6 is connected to the release lever 8 via the wire 9. Therefore, the release lever 8 is set at a predetermined position depending on whether or not the lock claws 4, 4 of the latch 6 of the one lock mechanism 7 are securely engaged with the engagement holes 3, 3, that is, whether or not they are locked. You will find out if you see if you are back. However, the other locking mechanism 7
Whether or not the lock claws 4, 4 of the latch 6 are securely engaged with the engagement holes 3, 3 cannot be seen by checking whether or not the release lever 8 has returned to the predetermined position. Therefore, the release lever 8
Even when the lock rail is returned to the predetermined position, it is difficult for the latch 6 of the other lock mechanism 7 to be engaged with the engagement holes 3, 3 due to the play of the wire 9, and the tips of the lock claws 4, 4 are engaged with the lower rail 1. In some cases, the wall 1a between the interlocking holes 3, 3 is still in contact with the wall 1a and is not locked, resulting in a so-called half-locked state. If the vehicle is driven in this half-locked state and a collision occurs, the seat slides, which is dangerous.

The present invention has been made in view of the above circumstances, and the release lever is directly connected to the latch of one lock mechanism and is connected to the latch of the other lock mechanism via a wire while the other lock mechanism is connected. If the engaging claws of the latch are easily engaged with the engaging holes of the lower rails and the release lever returns to the predetermined position, the locking claws of the latches of both lock mechanisms will simultaneously engage with the engaging holes and A safe vehicle seat sliding device in which the mechanisms are simultaneously locked to prevent a half-locked state and the latching claw of the other locking mechanism is prevented from rattling in the engaging hole. Is intended to provide.

<Means for Solving the Problems> In order to achieve the above object, the present invention provides left and right lower rails fixed to a vehicle body, and left and right upper rails fixed to the seat side and slidable with respect to the left and right lower rails. And a plurality of latch engagement holes provided on the left and right lower rails along the longitudinal direction thereof and a pair of latch engagement holes provided on the upper rail side and engageably and disengageably engaged with the latch engagement holes at desired slide positions of the upper rails. A left and right locking mechanism having a lock claw protruding from the tip and having a latch biased by a spring in a direction to engage the lock claw with the engagement hole; The release lever that releases the engagement with the engagement hole of the lower rail is directly connected to the latch of the one lock mechanism and is connected to the latch of the other lock mechanism via a wire. In the sliding device for a vehicle seat as described above, the tip end width dimension of the latch of the other lock mechanism is set smaller than the tip end width dimension of the latch of the one lock mechanism, and The gap size of each inner wall facing each other of the lock claws is set to be larger than the gap dimension of each inner wall facing each other of the lock claws of the latch of the one lock mechanism, and the lock claws of the latches of the other lock mechanism are set to each other. The inner part of each of the opposing inner walls is formed with a width therebetween, and the tip end of the latch of the other lock mechanism and the lock claw are covered with a cushioning material.

<Operation> By operating the release lever, the latches of both lock mechanisms move in one direction against the biasing force of the springs, the lock claws come off the engaging holes, and the lock is released. The seat may be slid back and forth along the lower rail.

Also, if the release levers are returned to the predetermined positions, the latches of both lock mechanisms move in the other direction by the biasing force of the springs, and the lock claws engage with the engaging holes to lock the seats in the front-back direction. Is prevented from sliding.

In this case, the tip width of the latch of the other lock mechanism connected to the release lever via the wire is set smaller than the tip width of the latch of the one lock mechanism directly connected to the release lever, and By setting the interval between the lock claws of the latch of the lock mechanism of the above to be larger than the interval between the lock claws of the latch of the one lock mechanism, the width of the lock claw becomes smaller and the engagement hole can be easily inserted. Engage with.

Further, since the width of the engaging claw of the latch of the other lock mechanism is reduced, the latch claw is loosened in the state of being engaged with the engaging hole because it is covered with the cushioning material. No noise.

<< Embodiment >> An embodiment of the present invention will be described below with reference to FIGS. In the present invention, the same parts as those of the prior art shown in FIGS. 6 to 8 will be described with the same reference numerals in the drawings.

FIG. 1 is a plan view of a vehicle seat slide device according to the present invention, and FIG. 2 is an enlarged view of a portion of a circle II in FIG. A novel point of the slide device of the present invention different from the conventional one is that the latch 6a of the other locking mechanism 7a (right side in the figure) connected to the release lever 8 via the wire 9 as shown in FIG.
Of the tip portion width A _2, and sets 5 while directly linked to the release lever 8, as shown in FIG smaller than the tip portion width A ₁ of the latch 6 of the lock mechanism 7 (left in the figure), the other latch lock pawl 4a of the latch 6a of the locking mechanism 7a, the gap size B ₂ of the inner wall facing the 4a each other, the one of the lock mechanism 7 6
Is set larger than the gap dimension B _{1 of the} inner walls of the lock claws 4, 4 that face each other, and the inner portions of the inner walls of the lock claws 4, 4 of the latch 6 of the other lock mechanism 7 that face each other are sandwiched by a width. 3 and 4, the tip of the latch 6a of the other lock mechanism 7a and the lock claws 4a, 4a are covered with a cushioning material 15 such as an elastic synthetic resin. .

In this way, the tip end width dimension A ₂ of the latch 6a of the other lock mechanism 7a connected to the release lever 8 via the wire 9 is
It is set to be smaller than the tip end width dimension A _{1 of one} latch 6 directly connected to the release lever 8 and the other lock mechanism 7a.
Since the gap dimension B ₂ between the lock claws 4a and 4a of the latch 6a of the above is made larger than the gap dimension B ₁ between the lock claws 4 and 4 of the latch 6 of the one lock mechanism 7, the width dimension of the lock claw 4 is The lock claws 4a, 4a of the latch 6a of the other lock mechanism 7a easily and surely engage with the engagement holes 3, 3 of the lower rails 1, 1 as they become substantially smaller. Therefore, when the release lever 8 is released, the latches 6 and 6a of the left and right locking mechanisms 7 and 7a surely engage the engaging holes 3 at the same time to enter the locked state, and the half locked state does not occur. Further, since the tip end of the latch 6a of the other lock mechanism 7a and the lock claws 4a, 4a are covered with the cushioning material 15, the lock claws 4a, 4a do not rattle when engaged with the engagement holes 3, 3 and noise is reduced. Does not occur.

Since the other construction and operation of the present invention are the same as those of the conventional one shown in FIGS. 6 to 8, the same parts are designated by the same reference numerals and the description thereof will be omitted.

<Effects of the Invention> As described above, the present invention has the left and right lower rails fixed to the vehicle body, the left and right upper rails fixed to the seat side and slidable with respect to the left and right lower rails, and the left and right lower rails with their longitudinal lengths. A plurality of latch engaging holes provided along the direction and a pair of lock claws provided on the upper rail side and projectingly engaged with the latch engaging holes at a desired slide position of the upper rail in a disengageable manner. And a left and right lock mechanism having a latch biased in a direction in which the lock claw is engaged with the engagement hole by a spring, and the engagement between the lock claw of the latch and the engagement hole of the lower rail. The release lever for releasing the engagement is directly connected to the latch of the one lock mechanism and is connected to the latch of the other lock mechanism via a wire. In the device, the width of the tip of the latch of the other lock mechanism is set smaller than the width of the tip of the latch of the one lock mechanism, and the distance between the lock claws of the latch of the other lock mechanism is set. Is set to be larger than the distance between the lock claws of the latch of the one lock mechanism, and the tip of the latch of the other lock mechanism and the lock claw are covered with a cushioning material. Is.

Therefore, the lock claw of the latch of the other lock mechanism, which is connected to the release lever via the wire, easily engages with the engagement hole of the lower rail, and the left and right lock mechanisms lock securely at the same time. It is safe not to get up.
Further, since the tip end of the latch of the other lock mechanism and the lock pawl are covered with the cushioning material, the lock pawl does not rattle in the engagement hole, and accordingly noise is not generated.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention. FIG. 1 is a plan view of a vehicle seat slide device according to the present invention, and FIG. 2 shows a part of a II circle portion of FIG. Enlarged cutaway plan view,
FIG. 3 is a plan view of a latch of the other locking mechanism of the slide device of the present invention, FIG. 4 is a side view of the same, FIG. 5 is a plan view of a latch of one locking mechanism of the device, and FIG. FIG. 7 is a perspective view of the vehicle seat slide device of FIG.
FIG. 8 is an enlarged perspective view in which a part of the I circle portion is cut away, and FIG. 8 is a plan view of the same. 3 ... Engagement hole, 4,4a ... Lock claw, 6,6a ... Latch, 7,
7a ... Lock mechanism.

Claims (1)

[Scope of utility model registration request] 1. Left and right lower rails fixed to the vehicle body, left and right upper rails fixed to the seat side and slidable with respect to the left and right lower rails, and provided on the left and right lower rails along their longitudinal direction. A plurality of latch engaging holes and a pair of lock claws provided on the upper rail side and engagingly and disengageably engaged with the latch engaging holes at a desired slide position of the upper rail, and a pair of lock claws projectingly provided on the tip end of the spring. And a left and right lock mechanism having a latch biased in a direction in which the lock claw is engaged with the engagement hole by means of a release for releasing the engagement between the lock claw of the latch and the engagement hole of the lower rail. In a sliding device for a vehicle seat, the lever is directly connected to the latch of the one lock mechanism and is connected to the latch of the other lock mechanism via a wire. The tip width of the latch of the other lock mechanism is set smaller than the tip width of the latch of the one lock mechanism, and the gap between the inner walls of the latches of the other lock mechanism facing each other is set to , The depth of each inner wall facing each other of the latches of the one locking mechanism is set to be larger than the gap dimension of each inner wall facing each other of the latches of the other locking mechanism In addition, the vehicle seat slide device is characterized in that the tip of the latch of the other lock mechanism and the lock claw are covered with a cushioning material.