JPH0639556U - Slide rail for power seat - Google Patents

Abstract

(57) [Abstract] [Purpose] When the lower fixed to the floor is slidably fitted to this lower rail, the upper rail to which the seat cushion is fixed and the drive motor are operated as drive sources,
In a power seat slide rail including an operating mechanism for sliding the upper rail, it is an object of the present invention to reduce the shapes of the lower rail and the upper rail, and to facilitate the work of attaching the operating mechanism. The operating mechanism includes a screw that is rotated by the drive motor and a movable portion that moves along the screw, and the screw is attached below the lower rail so as to be rotatable along the lower rail. The slide rail for a power seat, wherein the movable portion is movable along a slide hole formed in the lower rail and is fixed to the upper rail.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention includes a slide rail for a power seat, more specifically, an operating mechanism that is operated by a drive source of a drive motor and slides an upper rail on a seat cushion side slidably fitted to a lower rail on the floor side. It relates to slide rails for power seats.

[0002]

[Prior art]

 As a slide rail for this type of power seat, as described in Japanese Patent Laid-Open No. 2-258432, a lower rail fixed to the floor and a lower rail slidably fitted to the lower rail to fix a seat cushion. It is known that an upper rail and an operating mechanism for operating the drive motor as a drive source to slide the upper rail are provided.

The operating mechanism has a screw rotated by a drive motor and a movable portion movable along the screw, and the screw and the movable portion are provided inside the lower rail.

[0004]

[Problems to be solved by the device]

 In the conventional slide rail for a power seat, the screw of the operating mechanism and the movable portion are provided inside the lower rail, and therefore, there is a problem that the shape of the lower rail and the like becomes large accordingly.

In addition, since the screw of the operating mechanism is provided inside the lower rail, it takes time to attach the screw and the like, which causes a problem that workability is deteriorated.

Therefore, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to reduce the shapes of the lower rail and the upper rail, and to facilitate the work of attaching the screw and the like of the operating mechanism.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, a slide rail for a power seat according to the present invention has a screw whose operating mechanism is rotated by a drive motor and a movable portion which moves along the screw, and the screw is a lower rail. It is mounted rotatably downward along the lower rail, and is fixed to the upper rail when the movable part moves along the slide hole formed in the lower rail.

[0008]

[Action]

 When the drive motor of the operating mechanism is driven, the screw mounted below the lower rail rotates, and the movable portion moves along with the screw accordingly. When the movable part moves, the upper rail fixed to the movable part moves along the lower rail.

[0009]

【Example】

 An embodiment according to the present invention will be described with reference to FIGS. FIG. 1 shows a slide rail for a power seat according to the present invention. This power seat slide rail is slidably fitted to a lower rail 2 fixed to a floor 1 and the lower rail 2 and a seat cushion 3 is fixed. It is provided with an upper rail 4 and an operating mechanism 6 that operates using a drive motor 5 as a drive source and slides the upper rail 4.

The lower rail 2 is arranged above the floor 1 in order to provide the operating mechanism 6 between the lower rail 2 and the lower rail 2, and the front end leg 2 a at the front end and the rear end leg 2 b at the rear end of the lower rail 2 are on the floor 1. It is fixed to.

A slide hole 2d is formed in the bottom surface 2C of the lower rail 2 along the longitudinal direction so that the movable portion 7 of the actuating mechanism 6 described later can move.

The upper rail 4 is formed with an insertion hole 4 a and a notch 4 b for fixing the movable portion 7 to the upper rail 4 via the slide hole 2 d of the lower rail 2, and the upper rail 4 slides on the lower rail 2. It is movably fitted.

Supports 8 and 9 for supporting the lower rail 2 are provided in front of and behind the lower rail 2, and the supports 8 and 9 support the front and rear of the lower rail 2. A U-shaped cover 10 is attached to the bottom surface 2C of the lower rail 2 between the front and the rear of the lower rail 2, and the cover 10 supports the front and the rear of the lower rail 2.

The cover 10 includes a mounting surface portion 10 a fixed to the bottom surface 2 C of the lower rail 2 and bent portions 10 b and 10 b formed by bending both ends of the mounting surface portion 10 a toward the floor 1. A slide groove 10c having the same shape as the slide hole 2d is formed in the mounting surface portion 10a along the slide hole 2d, and the slide hole 2d of the lower rail 2 and the slide groove 10c of the cover 10 overlap each other.

Next, the operating mechanism 6 will be described. The operating mechanism 6 includes a screw 11 that is rotated by the drive motor 5 and a movable portion 7 that moves along the screw 11, and a speed reducer 12 is provided between the drive motor 5 and the screw 11. Has been.

The speed reducer 12 is fixed to the bottom surface 2c of the lower rail 2, and the screw 11 is rotatably mounted between the speed reducer 12 and the bracket 13 fixed to the mounting surface portion 10a of the cover 10. There is.

The screw 11 is provided inside the cover 10 below the lower rail 2 along the slide hole 2 d of the upper rail 4, and the screw 11 is rotated by the drive of the drive motor 5.

The movable part 7 is fixed to the upper rail 4 by a slide part 7 a which is movable forward and backward along the screw by the rotation of the screw 11, and which projects from the slide part 7 a toward the upper rail 4. And a protruding portion 7b.

The protrusion 7 b is integral with the slide portion 7 a, and when the slide portion 7 a moves along the screw 11, the protrusion 7 b also moves. The protruding portion 7b is inserted through the slide groove 10c of the cover 10 and the slide hole 2d of the lower rail 2 into the insertion hole 4a of the upper rail 4 and fitted into the notch 4b of the upper rail 4.

The protruding portion 7b is fixed to the upper rail 4 by mounting pieces 12 and 12 from both sides, and the upper rail slides forward and backward along the lower rail 2 by the rotation of the screw 11.

Since the screw 11 is provided substantially along the center of the bottom surface 2c of the lower rail 2, the screw has a good balance of strength, is not deformed by an extra force, and is smoothly rotated by the drive motor 5. You can do it.

Since the screw 11 is covered by the cover 10, the screw 11 is not exposed to the outside, the appearance is improved, and the screw 11 is not entangled with the skin of the sheet.

[0023]

[Effect of device]

 According to the present invention, since the screw of the operating mechanism is rotatably attached to the lower rail along the lower rail, and the movable portion movable along the slide hole formed in the lower rail is fixed to the upper rail, When the screw is rotated by the drive motor, the movable part moves and the upper rail slides along the lower rail.

Since the screw is provided below the lower rail, it is not necessary to provide the screw inside the lower rail, and the size and weight of the lower rail can be reduced.

Since the screw is provided below the lower rail, the screw can be attached more easily and the workability is improved than in the case where the screw is attached in a narrow space inside the lower rail.

[Brief description of drawings]

FIG. 1 is a perspective view of a slide rail for a power seat according to the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is an exploded perspective view of the slide rail shown in FIG.

[Explanation of symbols]

 2 Lower rail 2d Slide hole 4 Upper rail 7 Moving part 11 Screw

Claims (1)

[Scope of utility model registration request] 1. A lower rail fixed to a floor, an upper rail slidably fitted to the lower rail and having a seat cushion fixed thereto, and a drive motor which is operated as a drive source to slide the upper rail. In a power seat slide rail including an operating mechanism, the operating mechanism includes a screw rotated by the drive motor, and a movable portion movable along the screw,
The power seat is characterized in that the screw is rotatably attached below the lower rail along the lower rail, and the movable portion is movable along a slide hole formed in the lower rail and fixed to the upper rail. Slide rail.