JPH076032Y2 - Automatic seat belt - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) This invention proposes, for example, a rail body provided on a vehicle interior wall, and a shoulder belt with respect to a slide body moved along the rail body. The present invention relates to an automatic seat belt in which a buckle into which a seat is attached is provided, and when a passenger rides on a seat and closes a door, a slide body is moved along a rail body and a seat belt is automatically mounted.

(Prior Art) An automatic seat belt is provided as shown in FIGS. 3 and 4. Below, driver's seat 2 in passenger compartment 1
The seatbelt device 3 provided in the vehicle will be described. Rail bodies 7 are provided on inner wall surfaces of the front pillar 4, the roof panel 5, and the center pillar 6, respectively. The rail body 7 is provided along the opening edge of the entrance 9 through which the front door 8 is opened and closed, and a drive device (partly) is provided at the end of the rail body 7 extending to the lower end side of the center pillar 4. (Only shown) 10 is provided. The drive device 10 is configured to move a belt 11 as a string-like body provided along the rail body 7 in the axial direction. A slide body 12 is joined to the belt 11 in the middle thereof. The slide body 12 is moved along the track of the rail body 7, and is driven by the pulling and feeding movement of the belt 11.

A limit switch is attached to the end of the rail body 7.
14 are provided. The limit switches 14 are provided at the front end and the rear end side of the rail body 7, respectively, and the limit switch 14 provided at the rear end side is provided as shown in the figure. The limit switch 14 has a main body 15 provided adjacent to the driving device 10 for the belt 11, and an operating piece 16 extending from the main body 15 extends in parallel with the rail body 7 and is formed in a cylindrical shape. ing.

A connecting piece 17 is provided at the tip of the operation piece 16. The connecting piece 17 is formed with a connecting portion 18 for receiving the tip end of the operating piece 16, and the connecting portion 18 is formed with a cylindrical contact portion 19 parallel to the track of the rail body 7. . Here, the operation piece 16 and the contact portion 19 are formed parallel to each other, and the contact portion 19 is located closer to the belt 11 side than the operation piece 16.

Then, the limit switch 14 is used for the slide body 12
Moves to the drive unit 10 side along the rail body 7, and the connecting piece
By pressing the operation piece 16 by pressing 17, switch 14
Is operated.

The operation piece 16 of the limit switch 14 is attached to the frame 20 that fixes the drive device 10 to the rail body 7.

The operation piece 16 is a sliding space formed inside the frame 20.
It is designed to slide along 21.

The shaft center of the contact portion 19 is provided closer to the rail body 7 than the shaft center of the operation piece 16, and is connected to each other via the connecting portion 18 in a mutually offset state.

Then, the switch 14 is turned on by bringing the slide body 12 into contact with the limit switch 14. As a result, it is detected that the movement of the slide body 12 when the seat belt is worn is detected, and the drive of the drive device 10 is stopped accordingly.

When the passenger dismounts the vehicle, the slide body
12 automatically starts to move along the rail body 7. However, the connecting piece 17 is the connecting portion.
18 is moved along the inner wall surface of sliding space 21,
Since the contact portion of the operation piece 16 with respect to 18 and the input portion of the operation piece 16 are offset from each other, a tilt may occur during sliding and smooth movement may not be possible, and reliable control may not be possible. There was an occasion.

(Problems to be solved by the invention) In an automatic seat belt, a limit switch is provided at an end portion of a rail body in order to drive and control a slide body provided with a buckle along the rail body. Drive is stopped by detecting contact from the limit switch.However, this limit switch is provided as a separate piece with the connecting piece offset from the operating piece on the limit switch body side. Since it is difficult to move smoothly in the sliding space, there is a situation in which the connecting piece side is caught on the inner wall of the sliding space in an inclined state and causes a malfunction. .

The present invention has been made in view of the above problems, and an object of the present invention is to provide an automatic seat belt capable of preventing an erroneous operation of a limit switch and performing stable control.

[Constitution of device]

(Means for Solving the Problem) The present invention provides a rail body in a vehicle compartment, a slide body that moves along the rail body, and connects a string-like body to the slide body. A drive device for driving the switch body along the rail body is provided at an end of the rail body, and the main body of the switch device that is pressed by the slide body being driven along the rail body moves the axis of the cord body. Is provided at a predetermined distance from the switch device, the operation piece is extended from the main body of the switch device to the slide body side, and the operation piece is integrally provided with a proximity bending portion formed by bending so as to be close to the string body side. Located on the automatic seat belt.

(Operation) The operation piece extending from the main body of the switch device is integrally provided with a proximity bent portion bent so as to be close to the string-like body side, thereby preventing the tilt in the sliding space. hand,
It is possible to prevent malfunction due to being caught.

(Embodiment) A first embodiment of the present invention will be described with reference to FIG. The rail body 22 shown in the figure is provided over the front pillar, the roof panel, and the center pillar (not shown) in the vehicle interior, and is located on the side of the center pillar.
A drive device 23 is provided at the end of 22. The driving device 23 is adapted to drive the belt 24 as a cord-shaped body to be wound. The belt 24 is configured to be moved along the rail body 22, and an intermediate portion thereof is coupled to a slide anchor plate 25 as a slide body described later. The base end portion of the slide anchor plate 25 is formed so as to move along the rail body 22, and the buckle 2 is coupled to the tip end side. A tongue (not shown) is detachably connected to the buckle 2. The driving device 23 moves the belt 24 along the rail body 22 to transmit the driving force to the slide anchor plate 25, and the slide anchor plate 25 is moved along the rail body 22. There is.

A limit switch 26 is provided so as to be adjacent to the drive device 23. The limit switch 26 is located on the upper end side of the drive device 23 and is arranged along the belt 24. The operation piece 27 of the limit switch 26 is separated from the axis of the belt 24 by a predetermined distance, and the operation piece 27 extends in parallel with the belt 24. A proximity bending portion 28 is provided at the tip of the operation piece 27, and the proximity bending portion 28 is bent from the tip of the operation piece 27 so as to approach the belt 24 side. .

Further, the tip of the adjacent bent portion 28 is provided at a position where it abuts on the lower end of the slide anchor plate 25. That is, the slide anchor plate 25 is driven by the drive device 23.
As a result, the limit switch 26 is pushed and operated by being pulled toward the drive device 23 side.

The operation piece 27 of the limit switch 26 and the proximity bending portion 28 are integrally formed, and slide in the sliding space portion 30 formed in the frame body 29 that connects the drive device 23 to the rail body 22 side. It is provided freely.

Further, since the operating piece 27 and the proximity bending portion 28 are integrally provided, it is possible to prevent the operation piece 27 and the proximity bending portion 28 from being slanted even when their respective axial centers are offset, and the sliding space portion 30
Can be prevented from being caught on the inner wall surface of the.

A second embodiment of the present invention will be described below with reference to FIG. 2. However, only the structure of the limit switch 31 is different, so only the structure thereof will be described.

The limit switch 31 is provided so that its switch body 32 is adjacent to the drive device 23, and the operation piece 33 is
It is provided parallel to the belt 24. And this operation piece
From the tip end side of 33, a proximity bending portion 34 that is bent so as to be close to the belt 24 side is integrally provided. The proximal end portion of the proximity bending portion 34 is inclined obliquely along the axial direction and the radial direction, and the axial component of the force input from the tip of the proximity bending portion 34 is input more linearly. It is supposed to be done.

In the limit switches 26 and 31 configured as described above, the proximity bending portions 28 and 34 which are the input portions are integrally provided to the operation pieces 27 and 33, so that the rigidity is high and the distortion is high. Since it can be prevented, it is possible to prevent the inner wall of the sliding space portion 30 from being caught and to perform stable switch operation. As a result, it is possible to provide an automatic seat belt that can prevent malfunction and obtain stable driving.

[Effect of device]

As described above, according to the present invention, the proximity bending portion is integrally provided on the tip end side of the operation piece of the switch device, so that the catching at the time of sliding can be prevented and the malfunction can be prevented.
In addition, a compact device can be realized by arranging the tip of the switch in close proximity to the string-like body by the proximity bent portion. Further, it is possible to provide an automatic seat belt that can reduce the number of parts and can perform stable drive control.

[Brief description of drawings]

FIG. 1 is a sectional view showing an essential part of a first embodiment of the present invention, FIG. 2 is a sectional view showing an essential part of the second embodiment, and FIG. 3 is a sectional view showing a structure of a conventional automatic seat belt. FIG. 4 is a perspective view showing the interior of a vehicle provided with an automatic seat belt. 22 …… rail body, 23 …… driving device, 24 …… belt (string-like body), 25 …… slide body, 26 …… limit switch, 27
…… Operating piece, 28 …… Proximity bending part.

Claims (1)

[Scope of utility model registration request] 1. A rail body provided on a wall surface in a vehicle compartment, a drive device provided at an end side of the rail body, and a string-like body moved by the drive device to move along the rail body. The slide body, the buckle connected to the end of the slide body, and the slide body provided on the drive unit side that is pulled and moved to push the slide body and the switch is parallel to the moving direction of the rail body. In the automatic seat belt having a switch device that is operated by being displaced to, the switch device main body is separated from the axis of the cord-like body by a predetermined distance, and from within the switch device main body along the rail body. An extension portion is formed on the slide body side, and a proximity bending portion that is bent toward the axial center side of the string-like body and further extends to the slide body side is integrally provided on the extension portion. Automatic seat belt, characterized by being.