JP3115468B2 - Seat slide device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body-side rail formed in a groove-shaped cross section and fixedly mounted on a vehicle body, and a seat-side rail which is fitted to the vehicle body-side rail so as to be movable in a longitudinal direction and supports a seat. The present invention relates to a seat slide device comprising: a roller member rotatable while being in contact with an inner bottom surface portion of the vehicle body side rail, on the seat side rail. More specifically, the present invention relates to a long slide type seat slide device that supports a second seat or a third seat so as to be movable in a wide range from a rearmost position in a vehicle compartment to a front seat position, particularly in a vehicle equipped with a three-row seat.

[0002]

2. Description of the Related Art FIG. 8 shows an example of a conventional seat slide apparatus of this type. That is, a pair of vehicle-body-side rails 1 (only one of which is shown) having a length of about 2 m is fixed to the vehicle body floor in parallel with each other. The seat-side rail 2 having a length corresponding to the length is fitted so as to be movable in the longitudinal (front-back) direction.

The vehicle body side rail 1 is formed in a groove-shaped cross section, has a bottom surface portion 1a and both side wall portions 1b, 1b inside thereof, and a shaft member 3 is provided at a lower end portion of one of the seat side rails 2.
, Roller members 4 and 4 that roll while contacting the bottom surface 1a are mounted. The shaft member 3 is fixed to the seat-side rail 2, and each roller member 4 is attached to an end of the shaft member 3 so as to be rotatable only, and is not movable in the axial direction of the shaft member 3. A seat frame 6 (seat) is bolted to the seat rail 2 via a support bracket 5.

[0004]

However, in such a conventional seat slide device, the roller member 4 cannot move in the axial direction with respect to the shaft member 3 fixed to the seat-side rail 2, and the roller member 4 in both side directions. There is no play. Therefore, if the pair of vehicle-body-side rails 1 are not parallel, for example, the roller member 4 may interfere with the side wall 1b of the vehicle-body-side rail 1 during the forward and backward movement of the seat and cannot slide smoothly, resulting in good operability. There was no problem.

On the other hand, the linearity of the vehicle body side rail 1 itself, the parallelism between the pair of vehicle body side rails 1, and the seat side rail 2 are adjusted so that the roller member 4 smoothly rolls inside the vehicle body side rail 1. If measures such as increasing the assembly accuracy when mounting the roller member 4 are taken, a great deal of labor and time are required to obtain the accuracy and maintain the accuracy, resulting in an increase in cost.

The present invention has been made in view of such a conventional problem. Even if the roller member interferes with the side wall portion of the rail on the vehicle body side when the seat is moved back and forth, the roller member will not move. The part can be moved so that it retreats while resiliently contacting the part, the seat can slide smoothly without rattling when adjusting the movement of the seat, operability is improved, and the vehicle body side rail itself and its mounting It is an object of the present invention to provide a seat slide device which does not require stricter parts accuracy and assembly accuracy than necessary, and can reduce costs.

[0007]

In order to achieve the above object, the gist of the present invention is to provide a vehicle body side rail (21) formed in a groove-shaped cross section and fixed to the vehicle body side, and the vehicle body side rail (21). Side wall (33) movably fitted along the inside
A seat-side rail (31) for supporting a seat on the upper side, and a roller member that can roll on the seat-side rail (31) while being in contact with the inner bottom surface portion (24) of the vehicle-body-side rail (21); 42) A seat slide device (10) equipped with the device.
, A shaft member (40) extending in both directions is provided on the seat-side rail (31), and the shaft member (4) is provided.
0), the roller members (42, 4)
2) is mounted so as to be movable in the axial direction, and at both ends of the shaft member (40), sections in which the roller member (42) is movable in the axial direction are separately set in advance, and the roller members (42) are separately set. 42, 42) are respectively provided in the movable section within the movable section.
The roller members (42, 42) are normally set so as to be separated from the inner side wall portions (23, 23) of (1), and the respective roller members (42, 42) are arranged on the inner side wall portions (23, 2) of the vehicle body side rail (21).
When each roller member (4
An elastic body (41) for resiliently abutting the respective 2) on both side wall portions (23, 23) is provided in each of the movable sections, respectively. Exists.

[0008]

When the seat is moved back and forth, the seat side rail (31) is used.
When the roller member (42) mounted on the vehicle body approaches the side wall portion (23) of the vehicle body side rail (21) and finally tries to interfere with the roller member (42), the roller member (42) is elastically deformed by the side wall portion (41). While resiliently abutting on (23), the shaft member (40) moves so as to be retracted in the axial direction.

Accordingly, even if the parallel accuracy between the pair of vehicle body-side rails (21, 21) varies somewhat in the longitudinal direction of the rails, the variation does not vary in the axial direction of the roller member (42). It is appropriately absorbed by the movement. Moreover, the roller member (42) is connected to the vehicle body side rail (2).
Since it resiliently comes into contact with the side wall portion (1) of (1), it is possible to smoothly roll on the bottom portion (24) of the vehicle body side rail (21) without rattling.

As described above, when adjusting the movement of the seat, the seat can slide smoothly without rattling, and the operability is improved. Further, it is not necessary to strictly require the precision of parts and assembly such as the body-side rail (21) itself and its attachment, and the mounting of the roller member (42) on the seat-side rail (31).

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Various embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show a first embodiment of the present invention. The seat slide device 10 according to the present invention is of a so-called long slide type, and is a device that supports a seat so as to be movable back and forth with respect to a vehicle body floor.

More specifically, the seat slide device 10
In the three-row seat-equipped vehicle, as shown in FIG. 6, the second seat 13 and the third seat 14 disposed behind the driver's seat 11 and the passenger seat 12 located at the forefront of the vehicle cabin,
It is supported so that it can move back and forth over a wide range from the rearmost part of the vehicle body floor to the front position.

[0013] As shown in FIG.
The seat 13 (14) is fitted to the vehicle body side rail 21 fixedly mounted on the vehicle body floor, and movably fitted to the vehicle body side rail 21 in the longitudinal direction thereof (in this embodiment, coincides with the front-rear direction).
And a seat-side rail 22 that supports

Hereinafter, a combination of one vehicle body side rail 21 and a seat side rail 22 will be described as a representative.
As shown in FIG. 5, the vehicle body side rails 21 are fixedly mounted on the vehicle body floor as a pair in parallel with each other, and the pair of vehicle body side rails 21 and 21 support the seat 13 (14) on both sides of the seat side. The rails 22, 22 are fitted so as to be movable back and forth.

The vehicle-body-side rail 21 is formed in a groove-shaped cross section, and has a ceiling portion 22 in which a guide groove 22a extending in the longitudinal direction is formed, and both side walls 23, 23 and a bottom portion 24. The length of the vehicle body side rail 21 is set to about 2 m. On the other hand, the seat-side rail 31 is formed in an inverted L-shaped cross section, and has an upper surface portion 32 and a side wall portion 33.

The length of the seat-side rail 31 is the seat 13 (1
4) is set corresponding to the front-rear width, and is considerably shorter than the vehicle-body-side rail 21. At the front and rear ends of the side wall portion 33, shaft members 40,
The shaft members 40 are fixedly mounted, and roller members 42, 42 are attached to both ends of each shaft member 40 so as to be movable in the axial direction.

When the roller members 42, 42 contact the inner side walls 23, 23 of the vehicle body side rail 21 and are pressed relatively to the opposite ends of the shaft member 40, the roller members 42, 42 are placed on both sides. Coil springs 41, 41, which are elastic bodies that resiliently contact the walls 23, 23, are provided.

More specifically, as shown in FIG. 2, the shaft member 40 is a pipe material and has a hollow inside, and the proximal end of the pivot 43 is fitted in the distal end of the shaft member 40. The base end side of the pivot 43 is provided with a locking pin 44.
Thus, the shaft member 40 is fixed to the distal end side 40a.

A bush 4 is provided in the center hole of the roller member 42.
The bush 47 is fitted on the pivot 43 so as to be movable in the axial direction. An E-ring 46 for retaining the bush 47 is fixed to the leading end of the pivot 43. In other words, the roller member 42 integral with the bush 47 moves on the pivot 43 toward the distal end 40 a of the shaft member 40.
And the E-ring 46.

The coil spring 41 is an elastic body.
Is interposed between the flange of the bush 47 and the locking pin 44 so as to straddle the distal end side 40 a of the shaft member 40 and the pivot 43. That is, the coil spring 41 urges the roller member 42 in the direction of the tip of the pivot 43 (to the right in FIG. 2).

As shown in FIGS. 1 and 3, the lower end of the side wall 33 of the seat side rail 31 is fitted inside the rail 21 of the vehicle body, and the upper end of the side wall 33 is positioned on the rail of the vehicle side. The guide 21 is guided by a guide groove 22 a in the ceiling 22. The roller members 42, 42,... Provided on the seat-side rail 31 are in contact with the bottom surface portion 24 of the vehicle-body-side rail 21 so that the seat-side rail 31 can smoothly move back and forth with respect to the vehicle-body-side rail 21. Has become.

A guide piece 35 is formed on the side wall 33 of the seat-side rail 31 so as to extend upward from the lower edge of the side wall 33. The guide piece 35 is slidably abutted on a flange bent below the edge of the guide groove 22a of the vehicle body side rail 21. The upper surface 32 of the seat-side rail 31 is attached to the seat 13.
Bolts 34, 34 for fixing to (14) are attached.

Next, the operation will be described. As shown in FIG. 3, the roller member 42 attached to the seat side rail 31
The roller member 42 can move so as to be retracted in the axial direction of the shaft member 40 even if the roller member 42 approaches the side wall portion 23 of the vehicle body side rail 21 and finally tries to interfere with the side wall portion 23. It is urged to make contact.

Accordingly, as shown in FIG. 4, even if there is some variation in the parallel accuracy between the pair of vehicle body-side rails 21 and 21 in the longitudinal direction of the rails, the variation is not equal to the axis of the roller member 42. It is appropriately absorbed by the movement in the direction. Further, since the roller member 42 resiliently comes into contact with the side wall portion 23 of the vehicle body side rail 21, the roller member 42 can smoothly roll on the bottom surface portion 24 of the vehicle body side rail 21 without rattling.

Accordingly, a pair of vehicle body side rails 2 shown in FIG.
5, a pair of seat-side rails 3 shown in FIG.
1, 31 can move smoothly back and forth, and no excessive force is applied to each of the rails 21, 31. As described above, when adjusting the movement of the seat, the seat can be smoothly slid in the front-rear direction without rattling, and the operability and durability are improved.

Also, since the accuracy of parts and the accuracy of assembly, such as the vehicle-body-side rail 21 itself and its attachment, and the mounting of the roller member 42 on the seat-side rail 31, are alleviated to some extent, it is necessary to obtain accuracy and maintain accuracy. Labor and time can be reduced, and costs can be reduced.

FIG. 7 shows a second embodiment of the present invention.
In this embodiment, the shaft member 50 is formed of a solid stepped pin as shown in FIG. 7 instead of the pipe member as in the first embodiment. A tip portion 50a having a small diameter of the stepped pin serving as the shaft member 50 replaces the pivot 43 of the first embodiment, and a bush 47 integrated with the roller member 42 is provided on the tip portion 50a in the axial direction. It is fitted so as to be movable.

The coil spring 41, which is an elastic body, is interposed so as to wind around the distal end portion 50a of the shaft member 50. The coil spring 41 urges the roller member 42 in the direction of the tip of the shaft member 50 (to the right in FIG. 7), as in the first embodiment. In addition, the tip 5
E-ring 4 for retaining bush 47 at the forefront of 0a
6 is fixed. According to such a second embodiment,
By forming the shaft member 50 with the stepped pins, the pivot 43 and the locking pin 44 in the first embodiment become unnecessary, the number of parts can be reduced, and the work of assembling them becomes unnecessary. Cost can be reduced.

Although the coil spring is used as the elastic member in each of the above-described embodiments, the elastic member is not limited to this, and the roller member is urged toward the tip end of the shaft member due to its elasticity. If possible, a leaf spring, rubber, a resin piece, a cushion material, or the like may be used. However, if a coil spring is used among elastic bodies,
There is an effect that it can be easily attached by being fitted to the shaft member.

[0030]

According to the seat slide device of the present invention, roller members are movably mounted in the axial direction on both ends of the shaft member provided on the seat side rail, and each roller member is attached to both side walls of the vehicle body side rail. Since the roller member can resiliently contact, even if the roller member tries to interfere with the side wall portion of the vehicle body side rail, the roller member can move so as to retract while resiliently contacting the side wall portion. Therefore, when adjusting the movement of the seat, the seat can be smoothly slid without rattling, and the operability can be improved. In addition, it is not necessary to strictly require component precision and assembly precision more than necessary for the vehicle body side rail itself, its mounting, mounting of the roller member to the seat side rail, and the cost can be reduced.

[Brief description of the drawings]

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

FIG. 2 is an enlarged sectional view showing a main part of the seat slide device according to the first embodiment of the present invention.

FIG. 3 is a view taken in the direction of the arrow II in FIG. 1;

FIG. 4 is a schematic plan view showing a state in which a pair of vehicle body-side rails constituting the seat slide device according to the first embodiment of the present invention are fixed to a vehicle body floor.

FIG. 5 is a rear view showing a state in which a pair of seat-side rails constituting the seat slide device according to the first embodiment of the present invention are fixed to a seat.

FIG. 6 is a perspective view showing a seat on which the seat slide device according to the first embodiment of the present invention is mounted.

FIG. 7 is an enlarged sectional view showing a main part of a seat slide device according to a second embodiment of the present invention.

FIG. 8 is an exploded perspective view showing a conventional seat slide device.

[Description of Symbols] 10 ... Seat slide device 21 ... Body side rail 23 ... Side wall part 24 ... Bottom part 31 ... Seat side rail 40,50 ... Shaft member 41 ... Coil spring (elastic body) 42 ... Roller member

Claims (1)

(57) [Claims] 1. A vehicle-body-side rail formed in a groove-shaped cross-section and fixed to a vehicle-body side, and a seat-side rail supporting a seat on a side wall portion movably fitted along the vehicle-body-side rail. A seat slide device comprising a roller member capable of rolling while being in contact with an inner bottom surface portion of the vehicle body side rail on the seat side rail, wherein a shaft member extending in both directions is provided on the seat side rail; At each end of the shaft member, the roller member is attached so as to be movable in the axial direction, and at both end sides of the shaft member, sections in which the roller member is movable in the axial direction are separately set in advance. Each roller member is set so as to be normally separated from both inner side walls of the vehicle body side rail in the movable section, and each roller member is mounted on the vehicle. Elastic bodies are provided in each of the movable sections, each of which elastically contacts each roller member separately and resiliently when each of the roller members abuts on the inner side wall portions of the side rail and is relatively pressed. A sheet slide device.