JPH08216829A - Anchor support device of seat belt for vehicle - Google Patents

Abstract

PURPOSE: To prevent change of a seating position by restraining deformation of a seat belt anchor installation part of a rear floor panel. CONSTITUTION: An anchor 41 of a seat belt 12 is fixed on a rear floor panel 15 by a bolt 44. An anchor plate 70 is provided on the back side of the rear floor panel 15, and a loop type wire rope 80 is connected to the anchor plate 70. The wire rope 80 is wound around a differential carrier 90 with certain sagging, and at the time when the rear floor panel 15 tries to deform in the rising direction, the sagging of the wire rope 80 is eliminated and tensile force works, the force is transmitted to the differential carrier 90 through the wire rope 80, and deformation of the rear floor panel 15 is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat belt anchor support device mounted on a vehicle such as an automobile.

[0002]

2. Description of the Related Art When a seat belt is provided in the rear seat of an automobile, the anchor at the end of the belt on the window side is fixed by a bolt near a rigid body such as a side member in order to support the seat belt for the rear seat on the vehicle body. However, the anchor on the center side of the vehicle body is fixed to the rear floor panel with bolts.

Therefore, when a large forward load is applied to the rear seat belt as described above, a part of the load is supported by a rigid body such as a side member and a part of the load is provided by the rear floor panel. Will also be supported. In this case, the amount of displacement of the window-side anchor fixed near the side member is relatively small, but the anchor on the vehicle body center side fixed to the rear floor panel may be deformed in the direction in which the entire rear floor panel is lifted by the load. Yes, the seating position may change due to the movement of the anchor position.

Regarding the above-mentioned problem, Jpn.
Like the belt attachment device described in Japanese Patent No.
It has also been proposed to provide a locking metal fitting between the floor plate and the frame near the anchor attachment part to prevent the floor plate from being deformed when a large load is applied to the floor plate from the seat belt.

[0005]

However, in the case of the above-mentioned prior art, the locking metal fittings fixed to the floor plate side and the locking metal fittings fixed to the frame side are required, and these locking metal fittings are fixed. It also requires a large number of specially shaped locking metal fittings and related parts such as bolts to secure the installation space for the metal fittings and the number of man-hours required for assembly. There were problems such as struggling. Further, it is not enough to prevent the seating position from changing, such as the locking metal fitting itself being expected to be greatly deformed when a large load is input.

Therefore, an object of the present invention is to prevent the position of the anchor mounting portion from moving even when a large load such as a deformation of the floor panel is input to the seat belt, and prevent the seating position from changing. An object is to provide an anchor support device for a vehicle seat belt.

[0007]

SUMMARY OF THE INVENTION The present invention, which was developed to achieve the above object, provides a vehicle seat belt in which an anchor of a belt end is fixed to a floor panel of a vehicle body.
An anchor plate is fixed to the anchor mounting portion of the floor panel, a wire rope is connected to the anchor plate, and the wire rope is bent in a loop shape to pass through the vicinity of the floor panel. The wire rope is wound on the outside of the rigid component so that the force is transmitted to the rigid component when the wire rope is stretched when the floor panel is deformed in the lifting direction.

In the case of a vehicle having a differential gear on the rear wheel side, a differential carrier (an example of an engine power transmission system) passing near the rear floor panel is suitable as a rigid component around which the wire rope is wound. In the case of a vehicle that does not have a differential gear on the rear wheel side, the wire rope may be wound around a substantially rigid body such as an axle or a link member extending in the vehicle width direction of the rear wheel suspension.

[0009]

[Operation] When a large forward load is applied to the seat belt, the load is applied to the floor panel via the seat belt anchor at the anchor mounting portion of the floor panel, so that the rear floor panel is deformed in the lifting direction. And However, due to this deformation, the slack in the wire rope is removed and the wire rope becomes stretched, and the load is transmitted to the rigid component such as the differential carrier through the wire rope that is strong in tension, so the load is supported by this rigid component. As a result, further deformation of the floor panel is suppressed.

In this way, the anchor mounting portion of the seat belt is prevented from moving, so that the seating position is prevented from changing. During normal traveling, since the wire rope is wound around the rigid component with a slack, there is no problem that the wire rope hinders the movement of the rigid component.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The seat belt device for the rear seats of the vehicle shown in FIG. 3 includes a seat belt 11 for the right seat, a seat belt 12 for the center seat, and a seat belt 13 for the left seat. Although the seat is omitted in this figure, the rear seat is actually installed on the rear floor panel 15 of the vehicle body.

The seat belt 11 for the right seat is the webbing 2
An outer anchor 21 provided at one end side of 0, a shoulder anchor 22 supporting an upper side of the webbing 20, and a webbing 2
A retractor 23 for winding 0, a tongue 24 provided in the middle of the webbing 20, a buckle 25 to which the tongue 24 is detachably attached, and the like are provided. The outer anchor 21 is fixed near the side member 31 by a bolt 30. The shoulder anchor 22 is fixed near the pillar 32 by a bolt 33. Anchor 34 with buckle 25
Are fixed to the rear floor panel 15 with bolts 35.

The central seat belt 12 includes a central anchor 41 provided at one end of the webbing 40, a tongue 42 provided at the other end of the webbing 40, and a tongue 4.
2 is provided with a buckle 43 or the like that is detachably inserted. The center side anchor 41 is fixed to the rear floor panel 15 with a bolt 44. The anchor 45 of the buckle 43 is fixed to the rear floor panel 15 with a bolt 46.

The seat belt 13 for the left seat is the webbing 5
0, an outer anchor 51 provided at one end side, a shoulder anchor 52 supporting the upper side of the webbing 50, and the webbing 5
A retractor 53 for winding 0, a tongue 54 provided in the middle of the webbing 50, a buckle 55 to which the tongue 54 is detachably inserted, and the like are provided. The outer anchor 51 is fixed near the side member 61 by a bolt 60. The shoulder anchor 52 is fixed by a bolt 63 near a pillar (not shown). And buckle 5
The anchor 64 of No. 5 is fixed to the rear floor panel 15 with a bolt 65.

At the mounting portion of the anchors 34 and 41,
An anchor plate 70 is provided on the back side of the rear floor panel 15. An anchor plate 71 is also provided on the back side of the mounting portion of the other anchor 45, 64.

One of the anchor plates 7 is shown in FIGS. 1 and 2.
As represented by 0, the anchor plate 70 is provided with a pair of left and right nut portions 75 and 76,
A wire guide groove 77 is provided between the nut portions 75 and 76. The bolt 35 of the buckle-side anchor 34 for the right seat is screwed into and fixed to the one nut portion 75. The bolt 44 of the anchor 41 for the central seat is screwed and fixed to the other nut portion 76.

The other anchor plate 71 has the same structure as the anchor plate 70. That is, the other anchor plate 71 has a buckle-side anchor 45 for the central seat.
A nut portion 75 to which the bolt 46 of FIG. 4 is fixed, a nut portion 76 to which the bolt 65 of the left seat anchor 64 is fixed, and a wire guide groove 77 are provided between the nut portions 75 and 76. Each anchor plate 70, 71 may be fixed to the rear floor panel 15 by welding or the like.

In the wire guide groove 77 of each anchor plate 70, 71, the wire rope 8 closed in a loop shape is formed.
0, 81 are passed. As representatively shown in FIG. 2, one of the front edge portion 85 and the rear edge portion 86 of the anchor plate 70 has a curved shape in order to increase the rigidity of the anchor plate 70. Edge 85,
By adopting 86, the wire rope 80 is prevented from being suddenly bent at the corner of the anchor plate 70, and the stress concentration of the wire rope 80 is relieved.

The wire ropes 80 and 81 are, as shown in FIG. 1 as a representative of one wire rope 80, a cylindrical portion 90a on the front end side of a differential carrier 90 on the rear wheel side.
It is wrapped with a little slack on the outside. Moreover, the wire rope 80 has such a length that the rear floor panel 15 can be stretched in a straight line without any slack when the rear floor panel 15 is going to be deformed upward as shown by a two-dot chain line in the figure. Similarly to the wire rope 80, the other wire rope 81 is also wound around the differential carrier 90.

The wire ropes 80 and 81 have a slack to some extent, and the differential carrier 90.
Since the differential carrier 90 is wound around, it does not hinder the movement of the differential carrier 90 even if the differential carrier 90 swings in the vertical direction during normal traveling.

A cross member 91 extending in the vehicle width direction is fixed to the side members 31, 61. The differential carrier 90 is supported by the frame members such as the side members 31 and 61 via the cross member 91 and the like.

According to the anchor supporting device provided with the wire ropes 80 and 81, when a large forward load is applied to each of the seat belts 11 to 13, the anchor plate 70,
When the rear floor panel 15 is to be deformed in the lifting direction via 71, the wire ropes 80, 81 are pulled forward, so that the slack of the wire ropes 80, 81 is removed and tension is applied.

Therefore, the load is transmitted to the differential carrier 90 via the wire ropes 80 and 81. Since the differential carrier 90 has a large rigidity, the force that the rear floor panel 15 is deformed in the above direction is supported by the differential carrier 90, and the deformation of the rear floor panel 15 is suppressed. Therefore, the anchors 34, 41, 45, 64 mounted on the rear floor panel 15 are prevented from moving from the predetermined anchor mounting positions, and the seating positions can be prevented from moving.

If the wire ropes 80 and 81 are wound around the cylindrical portion 90a of the differential carrier 90 as in this embodiment, the radius of curvature of the wire ropes 80 and 81 can be made large, and the wire ropes 80 and 81 can be made large.
The contact length can be made as long as possible, stress concentration can be avoided, and it is preferable for ensuring the structural integrity of the wire ropes 80, 81.

The present invention, for example, in a vehicle provided with a three-link type rear wheel suspension 100 as shown in FIG.
The loop-shaped wires 80 and 81 connected to 71 may be wound around a highly rigid mechanical component extending in the vehicle width direction, for example, a highly rigid component such as the torsion axle 101 passing through the center of the vehicle body or a link member. .

Further, in the above embodiment, when the seat belts 11 to 13 for three persons are provided in the rear seat (the anchor plate is 2
However, the present invention can be applied to a vehicle having a seat belt for at least one person in the rear seat, and one anchor plate is provided for the rear floor panel 15 depending on the number of anchors. May be provided and only one wire rope may be used.

[0027]

According to the present invention, it is possible to prevent the anchor mounting portion of the belt from being deformed when a large load such as the deformation of the rear floor panel is input to the seat belt, and to prevent the seating position from changing. .

[Brief description of drawings]

FIG. 1 is a side view of a rear portion of a vehicle showing an anchor support device according to an embodiment of the present invention in a partial cross section.

2 is a perspective view of a portion of the bracket and wire of the anchor support device shown in FIG.

FIG. 3 is a perspective view of a rear portion of the vehicle having the anchor support device shown in FIG. 1 viewed from the inside.

FIG. 4 is a perspective view of a suspension having an anchor support device according to another embodiment of the present invention.

[Explanation of symbols]

 11, 12, 13 ... Seat belt 15 ... Rear floor panel 34, 41, 45, 64 ... Anchor 70, 71 ... Anchor plate 80, 81 ... Wire rope 90 ... Differential carrier (rigid part) 101 ... Axle (rigid part)

Claims (3)

[Claims] 1. A vehicle seat belt in which an anchor of a belt end is fixed to a floor panel of a vehicle body, an anchor plate is fixed to an anchor mounting portion of the floor panel, and a wire rope is connected to the anchor plate, The wire rope is bent in a loop shape and wound around the rigid part of the engine power transmission system or the rigid part of the suspension passing near the floor panel, and when the wire rope tries to deform in the lifting direction of the floor panel, An anchor support device for a vehicle seat belt, wherein force is transmitted to the rigid component by stretching. 2. An anchor support device for a vehicle seat belt according to claim 1, wherein the wire rope is wound around a differential carrier. 3. The anchor support device for a vehicle seat belt according to claim 1, wherein the wire rope is wound around an axle member or a link extending in the vehicle width direction of the rear wheel side suspension.