JPS60199751A - Seat belt device - Google Patents

Abstract

PURPOSE:To reduce the weight of a seat belt device by fixing an end of a connecting member of a seat belt to a fixed plate firmly secured to a movable rail of a seat sliding device and inserting a fixed belt into belt receivers formed in the above plate and the end. CONSTITUTION:A fixed plate 19 is firmly secured to a movable rail 17 of a seat sliding device 13 by means of anchoring members 20. An attachment member 26 attached to an end of a connecting member 22 of a seat belt is firmly secured to the plate 19 by means of an anchoring member 31. The attachment member 26 is provided on opposite sides of a groove 27 thereof two first U-shaped belt receivers 28. The fixed plate 19 is provided with three second U-shaped belt receivers 29, the middle one of the belt receivers 29 being disposed in the groove 27. When impact force is applied to a webbing 24 in emergency, the load is transmitted to the attachment member 26 to deform the anchoring member 31 and, as the result, the attachment member 26 moves unwardly. Then, a fixed belt 32 extends through the receivers 28, 29 in a corrugated form, restricting movement of the attachment member 26 in the upward and front-to-back directions.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seat belt device, and more specifically, to a seat belt device in which one end of a seat belt connecting member is attached to a movable rail side of a seat slide device.

2. Description of the Related Art Generally, a seat in a vehicle or the like is placed on a seat slide device, adjusted to move in the longitudinal direction of the vehicle, and locked by a locking mechanism at the adjusted position. In addition, seat belts are provided to ensure the safety of occupants while driving a vehicle, etc., and when the connecting member of this seat belt is fixedly attached to the body of a vehicle, the seat slide device cannot be fully utilized. However, there was a risk that the seat belt could not be used properly. Therefore, a method has been proposed in which one end of the seat belt connecting member is fixed to the movable rail side of the seat slide device using a mounting bracket, and the seat belt connecting member is moved simultaneously with the movement of the seat in the longitudinal direction. There is.

However, if an impact load is applied to the seat belt such as in an emergency, there is a risk that the movable rail of the seat slide device may be deformed or damaged. For this reason, various proposals have been made to prevent direct impact loads from being applied to the movable rail. - For example, as shown in FIG. 1, a bracket 4 is provided on a movable rail 3 that fits into a fixed rail 2 of a seat slide device 1, and a seat belt is connected to this bracket 4. A locking member 6 of the member 5 is fixed with a bolt 7, a plurality of protrusions 8 extending downward are arranged in parallel on the fixed rail 2 along its longitudinal direction, and the locking member 6 is further extended downward, A flange 9 bent inward of the seat is provided at the lower end of the extending portion 6a at an appropriate distance from the lower end of the protrusion 8, and a hole 10 into which the protrusion 8 can penetrate is provided at a position corresponding to the protrusion 8 of the flange 9. A seat slide device 1 is shown in which the seat slide device 1 is arranged in a row.

In the case of this notebook slide device 1, the protrusions 8 must be arranged in parallel along the longitudinal direction of the fixed rail 2, which has the disadvantage of increasing the weight of the seat slide device 1, and also makes it difficult to smoothly slide back and forth. There was a risk of interference.

The object of the present invention is to eliminate the risk of increasing the weight of the seat slide device, prevent the smooth sliding function of the seat slide device, and prevent this from occurring when an impact load is applied to the seat belt webbing in an emergency. The purpose is to provide a seat belt device that transmits impact loads to the vehicle body, does not require excessive reinforcement of the seat slide device, has a simple mechanism, and is highly economical. It will become clear.

2 and 3 schematically show an embodiment of the seat belt device according to the present invention, in which the seat shoe 7 12 of the seat 11 is connected to a pair of left and right seat slide devices 13.
The seat 11 is placed on the vehicle body 14 and can be moved and adjusted in the longitudinal direction of the vehicle body 14.

The seat slide device 13 is attached to a fixed bracket 1 on the vehicle body 14.
5, a movable rail 17 that is fixed to the lower part of the seat cushion 12 and can slide back and forth along the fixed rail 16, and a locking mechanism that locks the movable rail 17 at an appropriate position. (not shown).

A reinforcing plate 18 is fixed to the upper part of the movable rail 17, a fixed plate 19 is fixed to this reinforcing plate 18 by a fixing member 20, and a connecting member 22 of a seat belt 21 is attached to this fixed plate 19. A buckle 23 is formed at one end of the connecting member 22, and a tank plate 25 provided at the tip of the webbing 24 of the seat belt 21 is inserted and locked into the buckle 23. A mounting bracket 26 is fixed to the other end of the connecting member 22, and this mounting bracket 26 has a groove 27 formed in the lower center thereof.
There are two U-shaped first belt receivers 28 on both sides sandwiching the
is formed.

Furthermore, three U-shaped second belt receivers 29 are formed on the fixed plate 19, and the grooves 27 of the mounting bracket 26 are positioned in the center of the three second belt receivers 29, and the first and Second
The mounting bracket 26 is attached to the fixing plate 19 by fixing members 3 such as pins so that the belt receivers 28 and 29 are alternately located.
It is fixed by 1. Note that this fixing member 31 is formed to have weaker strength than the fixing member 20 of the fixing plate 19.

Both ends of a fixing belt 320 made of a material similar to webbing are fixed to the vehicle body 14 side along the longitudinal direction of the seat slide device 13, and this fixing belt 32 is attached to the first and second belt receivers 28 as shown in FIG. . is being done.

The above is the configuration of an embodiment of the notebook belt device according to the present invention. In such a configuration, when the movable rail 17 of the seat slide device 13 is to be slid back and forth, the fixed plate is attached together with the movable rail 17. 19 and the mounting bracket 26 slide back and forth, and at this time, the first and second belt receivers 28,
The fixed belt 32 inserted into the movable rail 17 does not restrict the back and forth sliding movement of the movable rail 17 since it has a certain amount of deflection.

Next, the seat belt 21 is attached to the connecting member 220 buckle 23.
Tank plate 2 provided at the tip of webbing 24 of
5 is locked, in an emergency, etc., the 7-to-belt 2
When an impact load is applied to the webbing 24 of No. 1, the impact load is transmitted to the mounting bracket 26 of the connecting member 22 in the direction indicated by arrow a in FIG. When the mounting bracket 26 attempts to move upward with respect to the fixing plate 19, the fixing belt 32 is inserted into the first and second belt receivers 28 and 29, so that the fixing belt 32 moves upward relative to the fixing plate 19. The upward movement and deformation of the fixing member 31 are restricted, and when the fixing member 31 is deformed and the mounting bracket 26 moves upward as shown in FIG. Receiving part 28
. The movement of people is regulated.

According to the present invention, when the seat is moved and adjusted in the front-rear direction by the seat slide device, the seat belt connecting member can move in the front-rear direction together with the movable rail, and the seat belt can be used appropriately. When an impact load is applied to the connecting member, the first belt receiving portion of the mounting bracket of the connecting member is locked to a fixed belt fixed to the vehicle body, and the impact load is transmitted to the vehicle body by this fixed belt. In addition, the movement of the mounting bracket, i.e., the connecting member, in the front-back direction is restricted, so there is no need for specialization by reinforcing the slide device, and the fixing belt is made of the same material as webbing, making it strong and significantly lighter in weight. It is possible to obtain a notebook belt device which can improve safety, has a simple mechanism, and is excellent in economic efficiency.

In the above-mentioned embodiment, the case where the elastic member 33 was provided at the longitudinal end of the fixing belt 32 or in the middle thereof was explained, but the mounting bracket 26 and the fixing plate 19
First and second belt receiving portions 28 and 2 formed respectively in
The fixing belt 32 is aligned with the movement locus in the front and back direction of 9.
If this is provided, there is no need to provide the elastic member 33 that gives the fixed belt 32 the amount of deflection.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional explanatory view of a conventional seatbelt connecting member attached to a foot slide device, FIG. 2 is a side view schematically showing an embodiment of the seatbelt device according to the present invention, and FIG. is an exploded perspective view, FIGS. 4 and 5 show the states of the mounting bracket and fixing belt, respectively. FIG. FIG. 3 is an explanatory front view showing a state where a load is applied. In the figure, 11...notebook, 12...seat cushion, 13...seat slide device, 14...vehicle body, 1
6...Fixed rail, 17...Movable rail, 19...
Fixed plate, 20... Same place member, 21... Seat belt, 22... Connection member, 23... Buckle, 24
... Webbing, 25... Tank plate, 26.
...Mounting bracket, 28...First belt receiver, 29...
Second belt receiving portion, 31...fixing member, 32...fixing belt, 33...elastic member. Figure 1 Figure 2 Figure 4 Figure 5

Claims (2)

[Claims] (1) In a seat belt device in which one end of a seat belt connecting member is attached to a movable rail side of a seat slide device, a fixed plate is fixed to the movable rail, a buckle is formed at one end of the connecting member, and a buckle is formed at the other end. A mounting bracket is formed on the mounting bracket, and the mounting bracket is fixed to the fixing plate, and a first belt receiving part for belt insertion is formed in the mounting bracket, and a second belt receiving part is formed in the fixing plate. . A seat belt device, wherein a fixed belt fixed to a vehicle body side along the seat slide device is inserted through the first and second belt receiving portions. (2) The seat belt device according to claim 1, wherein an elastic member is attached to the fixed belt in the longitudinal direction so as to absorb the deflection of the fixed belt during normal operation. .