JPH043888Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a shoulder webbing support position adjustment device used in a four-point full harness seat belt device or the like.

[Background Art and Issues to be Solved] In a seat belt device equipped with a pair of shoulder webbings, for example, a four-point full harness seat belt device, the pair of shoulder webbings are configured to pass above the seat back and be pulled out toward the passenger. be. The middle part of the shoulder webbing is often guided through a guide ring attached to a seat bag or the like.

However, such conventional guide rings are fixedly attached to the seat back, so
It is also not possible to deal with the case where the physique of the occupants differs.

The present invention takes the above-mentioned facts into account, and aims to provide a shoulder webbing support position adjustment device that can change the guide position of the shoulder webbing in accordance with the different physiques of occupants.

[Summary and operation of the invention] This invention is used in a seat belt device equipped with a pair of shoulder webbings, and includes a pair of guide rings that respectively guide these shoulder webbings, and a pair of guide rings that are vertically spaced apart from each other. It is characterized by having a lifting means for moving the guide rings the same distance in the direction of contact, and a locking means for locking the pair of guide rings at a desired position.

For this reason, when the occupant operates the elevating means, the elevating means moves the pair of guide rings, which respectively guide the shoulder webbing, by the same distance in the vertical direction and in the direction toward and away from each other. That is, for example, if the occupant is a large person, the pair of guide rings can be moved by operating the elevating means.
They move the same distance upward and away from each other so as to correspond to the shoulder width of the occupant. On the other hand, if the occupant is a small person, by operating the elevating means, the pair of guide rings is moved downward and toward each other by the same distance to correspond to the shoulder width of the occupant. . Therefore, when the physiques of the occupants differ, the positions of the pair of guide rings that respectively guide the shoulder webbing can be changed to positions that match the shoulder width of the occupant, and the locking means can be used to adjust the position of the pair of guide rings that respectively guide the shoulder webbing. It can reliably support the tension of the Yorda webbing.

[Embodiment of the invention] FIG. 2 shows a four-point seat belt device to which the invention is applied. The occupant sitting on the seat 10 is configured to be able to wear a pair of lap webbings 12, 14 and a pair of shoulder webbings 16, 16.

One ends of the lap webbings 12 and 14 are each attached to the seat cushion 10A of the seat 10 by an anchor plate 20, and a tongue plate 22 and a buckle device 24 are attached to the tip ends, respectively.

On the other hand, end portions (not shown) of the shoulder webbings 16, 18 are attached to the vehicle body, and tongue plates 26, 28 are provided at the tip portions. The tongue plates 26, 28 are engageable with the tongue plate 22 into the buckle device 24.

As shown in FIG. 1, guide rings 30 and 32 protrude from the top of the seat back 10B of the seat 10. As shown in FIG. These guide rings 30,3
2 is placed inside the seat bag 10B and is fixed to a rod 38 that is guided so as to be movable up and down by a combination of a pin 34 and a long hole 36 that are fixed to the seat bag 10B.

The moving direction of this rod 38 is
0 and 32 are diagonally spaced apart from each other as they rise, and the width of the shoulders of a larger passenger also increases, so this can be accommodated.

A pin 40 fixed to the lower end of the rod 38 is disposed in an elongated hole 44 formed in the upper end of the rack 42, so that when the rack 42 is raised or lowered,
Along with this, the rod 38 also moves up and down. The rack 42 can be moved up and down by a guide mechanism (not shown), and is engaged with a pinion 46. A rotating shaft 48 fixed to this pinion 46
protrudes to the side of the seat back 10B, and an adjustment dial 50 is fixed thereto. This adjustment dial 5
0 is rotated, the rotational movement is converted into linear movement by the rack 42, and the guide rings 30, 32 can be raised and lowered.

A lock bar 52 is pivotally supported below the pinion 46 by a support shaft 54. The tip of this support shaft 54 protrudes from the side surface of the seat bag 10B and is fixed to a release lever 56. A torsion coil spring 58 is interposed between the release lever 56 and the seat back 10B, and is biased in the direction in which the lock bar 52 is engaged with the rack 42.

In this embodiment configured in this way, after the occupant sits on the seat 10, the tongue plate 22,
When 26 and 28 are respectively engaged with the buckle device 24, a four-point seat belt is installed.

If a passenger with a different physique than usual is seated,
Rotate the release lever 56 against the biasing force of the torsion coil spring 58, and release the lock bar 52 into the rack 4.
Separate from 2. If the adjustment dial 50 is rotated here, the rod 38 is raised and lowered via the rack 42, and the guide rings 30 and 32 are similarly moved up and down. Therefore, the occupant can select a desired support position, and by releasing the release lever 56, the rack 42 is fixed.

When the vehicle is in an emergency situation such as a collision, a large tension is applied to the shoulder webbings 16 and 18 in the same way as the lap webbings 12 and 14, and the rods 38 and racks 42 are subjected to large compression by the guide rings 30 and 32. Receive power. But easy 42
Since the lock bar 52 is engaged with the lock bar 52, this load can be reliably supported and the restraint of the occupant can be maintained.

In addition to the 4-point seat belt, this invention also provides
Any device having a pair of shoulder webbings can be applied.

[Effects of the invention] This invention has the excellent effect that when the physiques of the occupants differ, the positions of the pair of guide rings that respectively guide the shoulder webbing can be changed to a position that matches the shoulder width of the occupant. .

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the main parts of an embodiment of the present invention, and FIG. 2 is a perspective view showing a seat belt device to which the present invention is applied. 10... Sheet, 16, 18... Shoulder webbing, 30, 32... Guide ring, 42...
Rack, 50...adjustment dial, 52...lock bar, 56...release bar.

Claims (1)

[Scope of utility model registration request] Used in a seat belt device equipped with a pair of shoulder webbings, which includes a pair of guide rings that respectively guide these shoulder webbings, and which moves the pair of guide rings the same distance in the vertical direction and in the direction toward and away from each other. 1. A shoulder webbing support position adjusting device comprising: lifting means for moving the guide rings; and locking means for locking the pair of guide rings at desired positions.