JP2809098B2 - 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 seat slide apparatus suitable for supporting a seat body in a vehicle seat or the like so as to be movable in the front-rear direction. A lower rail fixed on the surface, an upper rail slidably guided and supported on the lower rail in the longitudinal direction, and fixed to the seat body side; and a roller inserted between the lower rail and the upper rail. And a holding device for holding the sheet.

[0002]

2. Description of the Related Art Generally, a vehicle seat is provided with a seat cushion and a seat main body comprising a seat back and the like provided upright and rotatably adjustable behind the seat cushion. By supporting the vehicle on the floor of the vehicle body via a seat slide device, the vehicle can be slidably adjusted in the front-rear direction of the vehicle body, and can cope with the occupant's body type and preferences.

As shown in FIG. 5, a lower rail 2 of a conventional seat slide device 1 of this type has a main body 2a having a substantially upward U-shape, and both ends 2b thereof are bent inwardly from the front ends thereof and downward. It has a hanging portion 3 that hangs down.
The front and rear ends of the lower rail 2 are fixed to the vehicle body floor via the front and rear legs 4a and 4b.

[0004] The upper rail 5 is provided with the lower rail 3.
The main body 5a has a substantially downward U-shape so that it can be attached to the lower rail 2 and can be engaged with the locking portion 3 on the lower rail 2 side by being bent outward from the front end side of both sides 5b. And a locked portion 7 combined with

[0005] A holder 8 for holding a roller 9a and a ball 9b is inserted between the lower rail 2 and the upper rail 5, and guides and supports the upper rail 5 on the lower rail 2 so as to be slidable in the longitudinal direction. ing.

When the roller 9a and the ball 9b are interposed between the lower rail 2 and the upper rail 5 so as to be slidably supported, a conventional simple metal surface slides to obtain a sliding function. In comparison with the above, the slide resistance increases sharply due to bending and twisting of the rails 2 and 5 due to bending and mounting conditions, and malfunctions due to abnormal noise and fluctuations in the sliding resistance due to load during operation. This can prevent problems such as slipping.

As shown in FIGS. 6 and 7, the holder 8 has a lower substrate 8a and both side walls 8b.
A cutout 8c for inserting a roller is formed at the center of a. The roller 9a is inserted into the lower substrate 8a from below the notch 8c. Further, ball holding portions 11 are formed on both side wall portions 8b of the holding tool 8,
The ball 9b is held in the concave portion 11a of the ball holding portion 11.

[0008]

However, in the holder 8 of the conventional sheet slide apparatus 1 as described above, when the diameter and length of the roller 9a attached to the center of the lower substrate portion 8a are large, the roller Since the notch 8c for insertion is formed large, there is a possibility that the strength of the holder 8 may be weakened.

Further, since the roller 9a is simply set at the central portion of the lower substrate portion 8a for setting the roller 9a, the roller 9a drops from the notch 8c when the sheet slide device 1 is assembled in an inverted manner. And the workability of assembly is poor.

An object of the present invention is to improve the strength of a roller and a holder for holding a ball inserted between a lower rail and an upper rail of a seat slide device, to reduce the size of the holder, and to reduce the size of the seat. When assembling the slide device upside down, there is no danger that the roller will fall from the notch, and the assembling workability can be improved. An object of the present invention is to provide a seat slide device which is unnecessary and inexpensive.

[0011]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a seat slide device according to a first aspect of the present invention has a lower rail fixed on a sheet mounting floor. An upper rail which is slidably guided in the longitudinal direction on the lower rail and is attached and fixed to the seat body side; and a holder for holding a roller inserted between the lower rail and the upper rail. In the seat slide device, the lower rail has a main body having a substantially upward U-shape, and a locking portion formed at a front end side of both sides, and the upper rail includes:
A main body having a substantially downward U-shape that can be mounted on the lower rail while being crowned, and a latch that is combined so as to be able to abut against the lower rail-side locking portion formed on both ends of the lower rail. And a holder for holding the roller has a lower substrate portion and both side walls inserted between the lower rail and the upper rail, and the lower substrate portion has a central portion bent upward. An upper portion is formed, and a cutout portion for inserting a roller is formed in the lower substrate portion in a state where the upper portion formed by being bent upward is left.

According to a second aspect of the present invention, there is provided a seat slide apparatus comprising: a lower rail fixed on a sheet mounting floor; and a sheet supported and slidably guided in the longitudinal direction on the lower rail. In a seat slide device including an upper rail attached to and fixed to a main body side and a holder for holding a roller inserted between the lower rail and the upper rail, the lower rail includes:
A main body having a substantially upward U-shape, and a locking portion that is bent inward from the front end sides of both side portions thereof and hangs down downward, and the upper rail is assembled by covering the lower rail. The main body has a substantially downward U-shape as shown in the figure, and a locked portion that is bent outward from the front end sides of both sides to be combined with the locking portion on the lower rail side so as to be able to abut. A plurality of holders for holding the roller are provided before and after between the lower rail and the upper rail, and the holder has a lower substrate portion and both side wall portions,
The lower substrate portion is formed in a substantially trapezoidal shape in which a central portion is bent upward, and a cutout portion for inserting a roller is formed in the lower substrate portion while leaving an upper portion of the trapezoidal shape. I do.

[0013]

According to the seat slide device of the first and second aspects of the present invention, the holder for holding the roller is provided between the lower substrate and the upper rail and between the lower substrate and the side walls. The lower substrate portion has a notch portion for inserting a roller in the lower substrate portion in a state in which a central portion is bent upward to form an upper portion, and an upper portion formed by bending upward is left. Since it is formed, it is not necessary to form a notch for roller insertion depending on the diameter and length of the roller, and the notch can be formed small.

Further, when the sheet slide device is assembled in reverse, the notch portion for inserting the roller is formed in the lower substrate portion while the upper portion formed by being bent upward is left. It is held in the upper part formed by being bent upward, and there is no danger of falling from the notch,
The assembly workability can be improved.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A seat slide device according to the present invention will be described below in detail with reference to the drawings. FIGS. 1 to 4 show one embodiment of a seat slide device 1 according to the present invention. In these drawings, the same or corresponding parts as those in FIGS. Description is omitted.

Here, although not shown, the seat slide device 1 is provided on the floor of the vehicle body so as to be interposed between the seat body and a seat cushion, a seat back, and the like. As described above, it is used for slidably supporting in the front-rear direction.

According to the present invention, the lower rail 2 of the seat slide device 1 has a main body 2a having a substantially upward U-shape, and both ends 2b are bent inwardly from the front end sides and droop downward. The locking portion 3 is provided. The front and rear ends of the lower rail 2 are fixed to the vehicle body floor via the front and rear legs 4a and 4b.

The upper rail 5 is provided with the lower rail 2.
The main body 5a has a substantially downward U-shape so that it can be attached to the lower rail 2 and can be engaged with the locking portion 3 on the lower rail 2 side by being bent outward from the front end side of both sides 5b. And a locked portion 7 combined with

The lower rail 2 of the seat slide device 1
The upper rail 5 and the upper rail 5 are not limited to those having the shapes shown in the drawings, and the locking portion 3 and the locked portion 7 can be configured to be reverse to each other, and various other modifications can be made.

A holder 8 for holding a roller 9a and a ball 9b is inserted between the lower rail 2 and the upper rail 5, and guides and supports the upper rail 5 on the lower rail 2 so as to be slidable in the longitudinal direction. As described above.

The holder 8 of the present invention has a lower substrate 8a and both side walls 8b, and a central portion of the lower substrate 8a is bent upward to form an upper portion 8d. In this embodiment, the upward refraction state of the upper portion 8d is formed in a substantially trapezoidal shape when viewed from the front, but is not limited to this.

A cutout portion 8c for inserting a roller is formed in the lower substrate portion 8a while leaving an upper portion 8d bent and formed above the lower substrate portion 8a. A stopper piece 13 is formed on the lower substrate portion 8a.

Further, ball holding portions 11 are formed on both side wall portions 8b of the holding tool 8, and the concave portions 1 of the ball holding portions 11 are formed.
The ball 9b is held by 1a. In this embodiment, the ball holding portion 11 is formed in a shape corresponding to FIG.
The ball holding portion 11 and the concave portion 11a have a shape corresponding to FIG.
May be formed.

According to such a configuration, the lower substrate portion 8a
Is formed with a central portion bent upward, and a cutout 8c for inserting a roller is formed in the lower substrate portion 8a while leaving an upper portion 8d formed by bending upward. It is not necessary to form a large cutout 8c for inserting the roller depending on the diameter and length of the roller, and the cutout 8c can be formed small.

When assembling the sheet slide apparatus 1 in an inverted manner, a notch portion 8c for inserting a roller is formed in the lower substrate portion 8a while leaving the upper portion 8d bent upward. Therefore, the roller 9a is held by the upper portion 8d formed by being bent upward, and the notch 8c is formed.
There is no danger of dropping, and assembling workability can be improved.

It should be noted that the present invention is not limited to the structure of the embodiment described above, and the shape, structure, etc. of each part of the seat slide device 1 can be freely modified and changed as needed. Various modifications may be considered, including the shapes and materials of the rails 2 and 5.

[0027]

The above is the configuration of one embodiment of the present invention. According to the seat slide apparatus of the first and second aspects of the present invention, the holder for holding the roller comprises the lower rail and the upper. An upper portion formed by bending a central portion upward to form an upper portion and having a lower substrate portion inserted between the rails and both side walls; Since the notch for inserting the roller is formed in the lower substrate part with the remaining, there is no need to form the notch for inserting the roller depending on the diameter and length of the roller, and the notch can be made smaller. it can.

Further, when the sheet slide device is assembled in an inverted manner, since the notch portion for inserting the roller is formed in the lower substrate portion while leaving the upper portion formed by being bent upward, the roller is formed. Is held by the upper portion formed by being bent upward, and there is no danger of dropping from the notch portion, and assembling workability can be improved.

Further, the strength of the holder for holding the roller and the ball can be improved, the holder can be reduced in size, and when the seat slide device is installed upside down, the roller drops from the notch. It is possible to obtain an inexpensive seat slide device which can improve the assembly workability without any risk of being mounted, and which has a simple structure, does not require an increase in the number of new parts or additional work, and is inexpensive. it can.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a main part of an embodiment of a seat slide device according to the present invention.

FIG. 2 is a perspective view of a holder of the seat slide device according to the present invention.

FIG. 3 is an exploded perspective view showing an embodiment of the seat slide device according to the present invention.

FIG. 4 is a partially enlarged sectional view of a main part showing one embodiment of the seat slide device according to the present invention.

FIG. 5 is a schematic exploded perspective view illustrating a schematic configuration of a conventional seat slide device.

FIG. 6 is a perspective view of a holder of a conventional seat slide device.

FIG. 7 is a perspective view of a holder of a conventional seat slide device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seat slide device 2 Lower rail 2a Main part 2b Both sides 3 Lock part 5 Upper rail 5a Main part 5b Both sides 7 Locked part 8 Holder 8a Lower board part 8b Side wall part 8c Notch part 8d Upper part 9a Roller 9b Ball 11 Ball holder 13 Stopper

Claims (2)

(57) [Claims] 1. A lower rail fixed on a sheet mounting floor, an upper rail slidably guided and supported in a longitudinal direction on the lower rail, and attached and fixed to a seat body side, and the lower rail. A seat slide device comprising: a holder for holding a roller inserted between the upper rail and the lower rail; wherein the lower rail has a main body having a substantially upward U-shape, and locking portions formed on both ends of the lower rail. The upper rail has a substantially downward U-shaped main body that can be attached to the lower rail so as to be assembled with the lower rail, and a lower rail side engaging portion formed at both ends of the lower rail. A holding portion for holding the roller, and a lower substrate portion inserted between the lower rail and the upper rail; A wall portion, and the lower substrate portion has a central portion bent upward to form an upper portion, and the upper substrate formed by bending upward is left with a roller portion inserted into the lower substrate portion. A seat slide device, wherein a notch is formed. 2. A lower rail fixed on a sheet mounting floor, an upper rail slidably guided in the longitudinal direction on the lower rail and mounted and fixed to the seat body side, and the lower rail. In a seat slide device comprising a holder for holding a roller inserted between the lower rail and the upper rail, the lower rail is bent inward from a substantially U-shaped main body and both ends thereof. The upper rail has a substantially downward U-shaped main body that can be assembled with the lower rail covered with the lower rail. And a locked part that is combined with the locking part on the lower rail side by being bent so that the locking part can be brought into contact with the locking part on the lower rail side. A plurality of holders are provided before and after between the upper rail, the holder has a lower substrate portion and both side wall portions, and the lower substrate portion is formed in a substantially trapezoidal shape with a central portion bent upward, and A sheet slide device, wherein a cutout portion for inserting a roller is formed in a lower substrate portion while leaving an upper portion of the shape.