JPH10100752A - Vehicular seat sliding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lock a seat without vertical looseness by providing stopper members actuated interlocked with a latch member of lock mechanism movable in relation to an upper rail provided with sliding rollers so as to slide the seat along a lower rail. SOLUTION: Looseness preventing mechanism 10 has a pair of stopper members 11 connected to a latch member 7 through connecting rods 19 actuated interlocked with lock mechamism 6 in order to fix sliding rollers 5, provided at both end parts of an upper rail 4, respectively without vertical looseness. The inner end parts of the connecting rods 19 are pushed outward along a slot of inverted open angle shape of the latch member 7. The wedge-shaped tip parts of the stopper members 11 are thereby inserted between a lower rail 2 and the sliding rollers 5, so that the sliding rolles 5 are firmly fixed to the top part inner side face of the lower rail 2 to prevent vertical looseness.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat slide device for a vehicle, and more particularly to a latch of a lock mechanism for fixing a seat movably provided along a lower rail fixed to a floor of a vehicle body at a predetermined position. The present invention relates to a seat slide device for a vehicle having a rattling preventing mechanism for locking an upper rail to a lower rail without rattling by a stopper member operated in conjunction with the member.

[0002]

2. Description of the Related Art A conventional vehicle seat slide device slides a seat along a lower rail provided on a floor surface.
In other words, the seat is fixed and locked by locking the latch member of the lock mechanism in the lock hole of the lower rail so as to slide and fix the seat at a predetermined position.

[0003]

However, in such a conventional general lock mechanism, the locking between the latch member of the lock mechanism and the lock hole of the lower rail is sufficient in the front-rear direction. In the direction, since no special means is provided between the two members, the sheet cannot be locked without play in the vertical direction. Therefore, in order to solve the problem of play, attempts have been made in the past to prevent the play using a slider made of a synthetic resin.
That is, there is a problem that the frictional resistance is increased and the weight becomes heavy, and it is difficult to operate.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an anti-rattle mechanism having a stopper member which engages with a slide roller so as to lock a sheet without vertical play in order to solve such a conventional problem. It is an object of the present invention to provide a vehicle seat slide device provided with the same.

[0005]

In order to achieve the above-mentioned object, a vehicle seat slide device according to a first aspect of the present invention moves along a pair of parallel lower rails fixed to a floor surface of a vehicle body. In a vehicle seat slide device provided with a lock mechanism for fixing a seat provided so as to be fixed at a predetermined position, a lock movable with respect to an upper rail provided with a slide roller so as to slide the seat along the lower rail. It has a stopper member that is operated in conjunction with a latch member of the mechanism, and has a rattling prevention mechanism that locks the upper rail to the lower rail without rattling by the stopper member.

According to a second aspect of the present invention, there is provided a vehicle seat slide device, wherein the backlash preventing mechanism is provided with a stopper member for engaging the slide roller and a lock mechanism for operating the stopper member to engage and disengage the slide roller. And a connecting rod connected to the latch member.

According to a third aspect of the present invention, there is provided a vehicle seat slide device, wherein the stopper member has a wedge shape and can be inserted between the slide roller and the lower rail.

According to a fourth aspect of the present invention, in the vehicle seat slide device, the stopper member has a cam shape, is rotatably supported by a pivot on the upper rail, and can be cam-engaged with the lower rail. It is characterized by having been done.

According to a fifth aspect of the present invention, in the vehicle seat slide device, the cam-shaped stopper member has a cam surface formed by different radii of curvature whose outer dimensions from the cam shaft sequentially increase and decrease. It is characterized by being.

[0010] Further, the stopper member can be wedge-shaped or cam-shaped, and the slide roller can be securely locked to the lower rail without play.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First and second embodiments of the vehicle seat slide device according to the present invention will be described below in detail with reference to the drawings.

First, FIGS. 1 to 6 of the drawings show a first embodiment of a vehicle seat slide device according to the present invention. As shown in FIG.
A seat (not shown) provided movably along a pair of parallel lower rails 2 fixed to the floor of the vehicle body is provided with a lock mechanism 6 for fixing and locking the seat at a predetermined position. A slide roller is provided by a stopper member 11 operated in conjunction with a latch member 7 of a lock mechanism 6 movable vertically with respect to an upper rail 4 provided with a slide roller 5 for sliding a sheet along the lower rail 2. A backlash preventing mechanism 10 for locking the lower rail 5 to the lower rail 2 is provided.

The lower rail 2 is formed by bending a plate material into a substantially rectangular or rectangular cross section so as to have an opening 3 on the upper surface, and a slide roller 5 slides in the lower rail 2.

The upper rail 4 sliding along the lower rail 2 is made of a plate material in a flat shape elongated in the lateral direction.
A wide and shallow groove 8 for guiding the latch member 7 in the vertical direction is provided in the center portion, and the latch member 7 is provided along the groove 8 so as to be movable in the vertical direction.
Further, lower rails 2 are provided on both left and right sides of the upper rail 4.
Is provided with a pair of slide rollers 5 sliding along. A support member 9 for guiding and supporting the latch member 7 of the lock mechanism 6 so as to be able to move up and down is provided at a central portion of the upper rail 4, and the fixing member 12 such as a screw, a bolt, or a rivet is provided for the upper rail 4. It is fixed to the central part. At the top of the support member 9, there is provided a hole 14 through which the vertically moving latch member 7 passes.

A vertically movable latch member 7 of the lock mechanism 6
The upper part 7a is narrower and the lower part 7b is somewhat wider, two latches or legs 15 are provided at the lower end, and an inverted C-shaped slot 16 is provided near the lower end.
Is provided. The two legs 15 at the lower end of the latch member 7 are locked, i.e., locked, in lock holes 17 provided at a fixed interval on the bottom of the lower rail 2. Also, in order to always push the latch member 7 downward,
A flat rectangular spiral spring 18 is fitted in a narrow portion of the upper part 7 a of the latch member 7.

The rattling prevention mechanism 10 is provided with a connecting rod 19 which is operated in conjunction with the lock mechanism 6 to fix the slide rollers 5 provided at both ends of the upper rail 4 without any vertical play. It has a pair of stopper members 11 that are connected to the latch member 7 through the intermediary of the latch member 7. Each stopper member 11 is formed by connecting a pair of side-by-side wedge-shaped members 11a corresponding to a pair of slide rollers 5 sliding along the lower rail 2, and is made of an appropriate synthetic resin material. The outer end of the connecting rod 19 is attached to one wedge-shaped member 11a of such a stopper member 11, and the inner end of the connecting rod 19 has an angle of approximately 90 ° as shown in FIGS. Is bent several times at a substantially right angle as shown in the figure, and the horizontal tip portion 19a penetrates together with the inverted C-shaped slot 16 of the latch member 7 and the horizontal slot 20 of the upper rail 4. The distal end portion 19a is locked by caulking, or locked so as not to come off from the upper rail 4 by an appropriate stopper member. Such a stopper member 11 pushes the latch member 7 down with the help of the spring force of the helical spring 18 so as to fix the seat in a desired position, so that the latch member 7 moves along the inverted C-shaped slot 16 of the latch member 7. Connecting rod 19
Of the stopper member 11 is inserted between the lower rail 2 and the slide roller 5, so that the slide roller 5 is attached to the inner surface of the top of the lower rail 2. It is firmly fixed to prevent vertical backlash.

In order to move the sheet, the stopper member 11 is pulled away from the slide roller 5, and the latch member 7 is released from the lower rail 2 to unlock.
Is pulled upward against the spring force of the spiral spring 18,
Since the inner end of the connecting rod 19 is moved inward along the inverted C-shaped slot 16 of the latch member 7, the wedge-shaped stopper member 11 is pulled out from between the lower rail 2 and the slide roller 5. Since the slide roller 5 becomes free and the latch 15 of the latch member 7 is pulled out from the lock hole 17 of the lower rail 2 and unlocked and becomes free, the seat can be moved to a required position (FIG. 3). In order to prevent the stopper member 11 from falling, a part of the upper rail 4 is cut and raised to provide a fall prevention member 20.

FIGS. 7 to 11 show the second and third embodiments of the vehicle seat slide device according to the present invention. The stopper member of the rattling prevention mechanism has a cam shape. Each of them is different from that of the first embodiment.

In the second embodiment shown in FIGS. 7 and 8, the lock mechanism 26 of the vehicle seat slide device 21 is provided with an upper rail 24 as in the first embodiment.
The latch leg 27 of the latch member 27 is engaged with the lock hole 29 of the lower rail 22 so that the upper rail 24
Are locked to the lower rail 22. A hook member 30 having a substantially V-shaped cross section is provided at the bottom of the upper rail 24, and a mounting plate member 32 for the cam member 31 is formed upright at a position substantially corresponding to the latch member 27. . The cam member 31 is attached to the upright plate member 32 thus formed by a pivot 33 or the like, and the cam member 31 is urged clockwise by a spring 34 in FIG. That is, the spring 34 has one end locked to the cam member 31,
The other end is locked to the bottom of the upper rail 24. Further, a pin 35 is attached to the latch member 27 near the plate member 32.

As described above, the rattling preventing mechanism 25 is rotatably supported by the upper rail 24, and the cam member 31 urged by the spring 34 is provided as a stopper member. At the time of locking, the cam member 31 is rotated in conjunction with the latch member 27, and the cam surface of the cam member 31 contacts the inner surface of the top of the lower rail 22, so that the distance between the slide roller 25 and the lower rail 22 is reduced. Can be prevented.

In the third embodiment shown in FIGS. 9 and 10, the lock mechanism 46 of the vehicle seat slide device 41 has the same structure as in the second embodiment described above.
It has a vertically movable latch member 47 provided on the upper rail 44, and a latch leg 48 of the latch member 47 is engaged with a lock hole 49 of the lower rail 42, and the upper rail 44 is connected to the lower rail 42. It is designed to be locked against. A substantially flat dish-shaped contact plate 50 having legs at both ends is provided at the bottom of the upper rail 44 of the rattling prevention mechanism 45,
At a position substantially corresponding to the latch member 47, a plate member 52 for mounting the cam member 51 is formed upright.
The cam member 51 is attached to the upright plate member 52 formed as described above by a shaft 53 such as a pivot, and the cam member 51 is urged clockwise by a spring 54 in FIG. That is, the spring 54 has one end of the cam member 51.
, And the other end is locked to the contact plate 50. Further, the cam member 5 close to the plate member 52.
A pin 55 for one is attached to the latch member 47.

The above-mentioned rattling prevention mechanism 45 has a cam member 51 rotatably supported by the upper rail 44 and urged by a spring 54 as a stopper member, and locks the sheet at a predetermined position. At this time, the cam member 51 is rotated in conjunction with the latch member 47 and the cam surface of the cam member 51 comes into contact with the inner surface of the top of the lower rail 42, thereby preventing rattling.

The latching action of the cam member of the rattling prevention mechanism of the present invention will be described below with reference to FIG.

FIG. 11 shows only the relevant parts of the lower rail, the latch member and the cam member for clarity of explanation. FIG. 11A shows a state in which the latch member 47 is fully opened, in which the latch member 47 unlocks the lock mechanism 45 and operates a full stroke.
There is a gap s between the upper rail 42 and the lower rail 42, and the tip of the cam member 51 is locked to the pin 55 of the latch member 47.

The latch member 47 is lowered from the fully opened state shown in FIG.
FIG. 11B shows a state in which the vehicle rides on the lower rail 42 without being aligned with the lock hole 49 of FIG. Therefore, first,
When the position of the latch member 47 is adjusted to the correct position, the latch member 47 is aligned with the lock hole 49 of the lower rail 42, and the latch member 47 is correctly fitted into the lock hole 49, as shown in FIG.
The state becomes 1 (c). In this state, the cam member 51 comes into contact with and contacts the inner surface of the top of the lower rail 42, and the leg 48 of the latch member 47 fits into the lock hole 49 of the lower rail 42 to be engaged with the lower rail 42 and the cam member 51.
There is no backlash between them. FIG. 11 (d)
Further, when the cam member 51 is rotated more than enough and the lap is set with respect to the size of the lower rail 42, the cam member 52 is further rotated even if there is a play due to a variation in the size of the lower rail 42. As a result, the cam member 5
2 comes into contact with the inner surface of the top of the lower rail 42 to be in a latch engagement state, and even if there is a manufacturing wrap as a machining tolerance, any wrap can be more appropriately restrained.

In this case, the slide roller 45 rolls on the inner lower surface of the lower rail 42, and
Since the slider 56 made of synthetic resin of the upper rail 44 is in contact with and engaged with the upper surface of the inner rail, the play between the lower rail 42 and the upper rail 44 can be suppressed and restrained.

[0027]

As described above, in the vehicle seat slide device according to the first aspect of the present invention, the seat provided to be movable along a pair of parallel lower rails fixed to the floor of the vehicle body is provided. In a vehicle seat slide device provided with a lock mechanism that locks in a fixed position, a slide roller is provided to slide a seat along a lower rail, and the lock mechanism is movable with respect to an upper rail attached to the seat. Since the stopper member that is operated in conjunction with the latch member is provided, the upper rail can be securely locked to the lower rail without rattling in the vertical direction by the stopper member.

According to a second aspect of the present invention, there is provided a vehicle seat slide device, wherein the backlash preventing mechanism is provided with a stopper member for engaging with the slide roller and a lock mechanism for operating the stopper member to engage and disengage with the slide roller. And a connecting rod connected to the latch member.

In the vehicle seat slide device according to the third aspect of the present invention, the stopper member has a wedge shape.
By simply inserting the stopper member between the slide roller and the lower rail, the slide roller can be securely and securely locked to the lower rail without play.

In the vehicle seat slide device according to a fourth aspect of the present invention, the stopper member has a cam shape, is rotatably supported by a pivot on the upper rail, and can be engaged with the lower rail by cam. The stopper member can be easily and easily manufactured.

In the seat slide device for a vehicle according to the fifth aspect of the present invention, the cam-shaped stopper member has a cam surface formed by different curvature radii whose outer dimensions from the cam axis sequentially increase and decrease. The slide roller can be securely locked to the lower rail by a simple cam member even for a small gap or lap setting.

Further, according to the present invention, in the vehicle seat slide device, the stopper member of the rattling prevention mechanism is engaged with the slide roller sliding along the lower rail in conjunction with the lock mechanism, or The slide roller can be locked to the lower rail without backlash by engaging the stopper member with the lower rail.

Further, by making the stopper member wedge-shaped or cam-shaped and engaging with the wedge or cam, the slide roller can be securely locked to the lower rail without play.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of a vehicle seat slide device according to the present invention.

FIG. 2 is a central longitudinal sectional view of the vehicle seat slide device of FIG. 1;

FIG. 3 is an enlarged sectional partial view of a lower portion of FIG. 2;

FIG. 4 is an exploded perspective view of a stopper portion.

FIG. 5 is an exploded front view of the vehicle seat slide device of the present invention.

FIG. 6 is a front view of the vehicle seat slide device of FIG. 1 during movement.

FIG. 7 is a front view showing a second embodiment of the vehicle seat slide device of the present invention.

FIG. 8 is an enlarged sectional view of a latch member of the vehicle seat slide device of FIG. 7;

FIG. 9 is a front view showing a third embodiment of the vehicle seat slide device of the present invention.

FIG. 10 is an enlarged sectional view of a latch member of the vehicle seat slide device of FIG. 9;

FIG. 11 is an operation view showing an operation state of a latch member of the vehicle seat slide device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle seat slide apparatus 2 Lower rail 3 Opening 4 Upper rail 5 Slide roller 6 Lock mechanism 7 Latch member 8 Groove 9 Support member 10 Prevention mechanism with backlash 11 Stopper member 12 Fixing member 13 Slot hole 14 Hole 15 Leg 16 Slot hole 17 Lock Hole 18 Spiral Spring 19 Connecting Rod 20 Fall Prevention Member 21 Vehicle Seat Slide Device 22 Lower Rail 24 Upper Rail 25 Backlash Prevention Mechanism 26 Lock Mechanism 27 Latch Member 28 Groove 30 Hook Member 31 Stopper Member 32 Fixing Member 33 Slot Hole 34 Hole 35 Leg 41 Vehicle Seat Slide Device 42 Lower Rail 44 Upper Rail 45 Backlash Prevention Mechanism 46 Lock Mechanism 47 Latch Member 48 Leg 49 Lock Hole 50 Contact Plate 51 Cam Member 52 Plate Member 5 3-axis 54 Spring 55 Pin 56 Slider

Claims (5)

[Claims] 1. A vehicle seat slide device provided with a lock mechanism that locks a seat at a predetermined position movably provided along a pair of parallel lower rails fixed to a floor surface of a vehicle body. It has a stopper member which is operated in conjunction with a latch member of a lock mechanism movable with respect to an upper rail provided with a slide roller so as to slide along the lower rail, and the upper rail is rattled to the lower rail by the stopper member. A seat slide device for a vehicle, comprising a rattling prevention mechanism for locking without any play. 2. The rattling prevention mechanism includes a stopper member engaged with a slide roller, and a connecting rod connected to a latch member of a lock mechanism for operating the stopper member to disengage the slide roller. The vehicle seat slide device according to claim 1, wherein: 3. The vehicle seat slide device according to claim 2, wherein the stopper member has a wedge shape, and can be inserted between a slide roller and a lower rail. 4. The stopper member according to claim 2, wherein the stopper member has a cam shape, is rotatably supported by a pivot on an upper rail, and is capable of engaging with the lower rail. Vehicle seat slide device. 5. The vehicle seat slide according to claim 4, wherein the cam-shaped stopper member has a cam surface formed with different radii of curvature whose outer dimensions from the cam axis sequentially increase and decrease. apparatus.