JPH078295Y2 - Power seat positioning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of use) The present invention relates to a positioning device for a power seat of a vehicle.

(Prior art and problems to be solved) Vehicle seats, especially driver seats, are equipped with slide adjusters that can be moved forward and backward so that an optimal posture can be secured according to the physique, preferences, etc. of the driver. There is. As this slide adjuster, there is a power seat that includes a drive device and a positioning device, and that automatically moves the seat to a preset position by operating a switch.

As a power seat positioning device for setting a stop position of the power seat and stopping the power seat at the set position, "a seat position automatic selecting device (Japanese Utility Model Publication No. 63-30167) has been proposed. Uses a large number of expensive electronic components such as a microcomputer and a memory for a positioning control circuit, and has a problem that the structure is complicated and very expensive.

The present invention has been made in view of the above points, and an object thereof is to provide an inexpensive power seat positioning device having a simple configuration.

(Means for Solving the Problems) According to the present invention in order to achieve the above object, according to the present invention, the power for arranging the stop position of the seat, which is arranged on the upper rail sliding on the lower rail and is moved in the front-rear direction by the drive device In a seat positioning device, a guide rail arranged and fixed in the longitudinal direction on either one of the lower rails or the upper rails, a slider slidably supported by the guide rails in the longitudinal direction, and the slider. A lever that is mounted so as to be slidable in the vertical direction and movable integrally, and that has a knob at one end and can abut the guide rail at the other end and is interposed between the slider and the lever, A spring that presses the other end against the guide rail, and the seat provided at a predetermined position on the other of the lower rail or the upper rail. The sensor is provided with a sensor for detecting the position of the slider that moves together with the sensor.

(Operation) Pull the knob against the spring force of the spring to separate the other end of the lever from the guide rail. This allows the lever to move integrally with the slider along the guide rail to any position. When the knob is released at a desired position, the other end of the lever is pressed against the guide rail by the spring force of the spring and locked at that position. The slider then moves with the seat to activate the sensor. The output of this sensor stops the driving device and stops the sheet at that position.

Embodiment An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 1, a power seat 1 includes a bracket 4 (only one side is shown) at a rear end of upper rails 3 and 3 slidably arranged on lower rails 2 and 2 fixed in parallel on a floor surface of a vehicle. Both sides of the rear end of the seat 5 are supported by the upper and lower ends of an upper shaft (not shown) of a swing arm 7 whose upper end is rotatable in the front-rear direction, while supporting both rear ends of the seat 5 via the Then, the rotation of the drive motor of the drive device housed in the seat 5 and rotated by the operation of the main switch 9 is controlled by the swing arm 7 via a gear system (both not shown).
The seat 5 is configured to be moved forward or backward by transmitting to a fan-shaped rack 8 fixed to the seat 8 and rotating the swing arm 7 forward or backward.

The seat positioning device 20 is arranged on one side of the power seat 1 as illustrated. Positioning device for this sheet
20 is a sheet positioning device 20 shown in FIGS.
As shown in the figure, it is composed of a slider 21, a case 22, a lever 23, a spring 24, a guide rail 25, a limit switch 32, and the like. The slider 21 is substantially U-shaped and surrounds the lower rail 2 on three sides, that is, the bottom surface 21a is below the lower rail 2, one end surface 21b is outside the lower rail 2, and the other end surface 21c is inside the lower rail 2. It is arranged to be located.

The case 22 is located on one end surface of the slider 21 from the opening end of its bottom.
21b is inserted and screwed and fixed to the inner surface of the one side surface 22a. Further, holes 22d and 22e are formed at the lower ends of the front end face 22b and the rear end face 22c, respectively.
Pipe-shaped guides housed in case 22 inside d and 22e
Both ends of 27 are fitted and fixed. A notch 27a is provided in the upper part of the peripheral surface of the guide 27.

The lever 23 has a knob 26 at the upper end and a case 22 at the lower end.
The case 22 along the side surface 22h from the slit 22g on the upper surface of
It is fitted in and out so that it can be inserted and removed, and faces the front surface 21b of the slider 21 at a distance. The lower end 23a of the lever 23 faces the end surface 21b of the slider 21 and is bent at a substantially right angle, and the guide 2
It is configured to fit into the notch 27a of 7 so as to be able to move in and out.
A pad 28 is fixed to the lower end 23a. The slider 21 and the lever 23 constitute a memory lever.

The spring 24 is inside the case 22 and the end surface 21b of the slider 21.
And a lever 23, the upper end of which is a hook 23b formed by cutting and raising the upper part of the lever 23, and the lower end of which is the end face 2 of the slider 21.
The hooks 21d cut and raised at the bottom of 1b are locked respectively,
It acts to pull the lever 23 downward. The guide rail 25 is arranged outside the lower rail 2 along the lower rail 2, and both ends thereof are fixed to brackets 31, 31 fixed to the front and rear portions of the bottom surface of the lower rail 2. The guide 27 is fitted onto the guide rail 25 so as to be slidable along the axial direction, and the pad 28 of the lower end 23a of the lever 23 is guided by the spring force of the spring 24 through the notch 27a of the guide 27 to surround the guide rail 25. Press against the surface. This restricts the movement of the guide 27, that is, the memory lever.

A sensor, for example, the limit switch 32, has its actuator 32a.
Is arranged at a predetermined position on the upper surface of the upper rail 3 so that it can come into contact with the other end surface 21c of the slider 21. When the slider 21 moves in the front or rear direction of the upper rail 3, it is pushed by the end surface 21c. The position of the slider 21 is detected. The limit switch 32 is connected to a control circuit of a drive device that drives the seat 5.

The operation will be described below.

When the switch 9 of the seat 5 is operated to the "forward" side, the motor of the drive device rotates forward to rotate the swing arm 7 forward, and the seat 5 is moved together with the upper rail 3 and the limit switch 32 to the arrow A in FIG. Move in the forward direction indicated by. When the actuator 32a of the limit switch 32 is pushed by the end surface 21c of the slider 21, the switch is turned off, the motor of the drive device is stopped, and the seat 5 is stopped. In the lever 23 of the positioning device 20, the lower end 23a of the lever 23 is guided by the spring force of the spring 24 via the pad 28.
5 is press-fitted to the seat 5, so that the seat 5 is secured to the lever 23.
Stop at the position set by.

When the stop position of the seat 5 is changed, the knob 26 is held and the lever 23 is pulled up against the spring force of the spring 24.
Separate from 25. As a result, the lever 23, that is, the slider 21
Can be slid forward or backward. Next, when the lever 23 is slid to the desired position in the front or rear and the knob 26 is released, the lever 23 is pulled down by the spring force of the spring 24, and the pad 28 is pressed against the guide rail 25.
As a result, the lever 23 is locked in that position. In this way, the seat stop position can be set at an arbitrary position.

In this embodiment, the limit switch 32 is used as the sensor, but the present invention is not limited to this, and other proximity switches such as a reed switch may be used.

Further, although the case where the guide rail and the lever are arranged on the lower rail and the sensor is arranged on the lower rail is described in the present embodiment, the present invention is not limited to this. It may be configured to. In this case, the sensor may be placed on the floor.

(Effect of the Invention) As described above, according to the present invention, in the power seat positioning device that is disposed on the upper rail that slides on the lower rail and that sets the stop position of the seat that is moved in the front-rear direction by the drive device, A guide rail arranged and fixed along one of the lower rails and the upper rails along the longitudinal direction, a slider slidably supported by the guide rail along the longitudinal direction, and vertically slidable on the slider. And a lever that is integrally movably mounted, has a knob at one end and can abut the guide rail at the other end, and the other end of the lever is interposed between the slider and the lever. A spring to be pressed into contact with the seat, and the spring which is arranged at the other predetermined position of the lower rail or the upper rail and moves together with the seat. Since it is configured to have a sensor for detecting the position of the rider, it is possible to set the slider to an arbitrary position, it is possible to easily set the optimum seat position,
Moreover, the positioning device is mechanically simple and can be provided at low cost.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a power seat positioning apparatus to which the present invention is applied, FIG. 2 is a sectional view of the positioning apparatus of FIG. 1, and FIG. 3 is an arrow line III-III of FIG. FIG. 1 ... Power seat, 2 ... Lower rail, 3 ... Upper rail, 5 ... Seat, 20 ... Positioning device, 21 ... Slider, 22 ... Lever, 24 ... Spring, 25 ... Guide rail, 32 ... …Limit switch.

Claims (1)

[Scope of utility model registration request] 1. A power seat positioning device, which is disposed on an upper rail that slides on a lower rail and sets a stop position of a seat that is moved in the front-rear direction by a drive device, in a longitudinal direction of either one of the lower rail and the upper rail. A guide rail fixed along the guide rail, a slider slidably supported by the guide rail in the longitudinal direction, and a slider slidably mounted on the slider in the vertical direction and integrally movable. A lever provided with a knob and having the other end abutting against the guide rail; a spring interposed between the slider and the lever to press the other end of the lever against the guide rail; and either the lower rail or the upper rail. Or a sensor for detecting the position of the slider which is arranged at the other predetermined position and moves together with the sheet. Positioning device of a power seat, characterized and.