JP2000016237A - Seat belt device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve capability of fitting and restraining a four-point seat belt. SOLUTION: This seat belt device is constituted by connecting right and left seat belts 22, 23 connected through connecting means 24 at the midpoint and forming the upper parts of respective seat belts 22, 23 at shoulder belt parts 22a, 23a, wherein the lower part of one seat belt 23 is fixed to the seat side, and the lower part of the other seat belt 22 is uncoupleably-connected to the seat side. The connecting means 25 is inserted into both the seat belts 22, 23 so as to move. By moving the connecting means 25 appropriately, it is possible to accurately adjust the length of the shoulder belts 22a and 23a and improve capability of fitting and restraining the seat belt.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat belt device.

[0002]

2. Description of the Related Art As one type of a vehicle seat belt device, as shown in Japanese Utility Model Laid-Open Publication No. 4-79754, seat belts which are disposed at left and right portions of a seat and extend in a vertical direction are interposed therebetween. There is a vehicular seat belt device in which the upper part of each seat belt is connected to the shoulder belt part and the lower part is connected to the lap belt part by connecting with each other via connecting means.

[0003]

In the seat belt device disclosed in the above-mentioned publication, the portion forming the shoulder belt portion and the portion forming the lap belt portion of each seat belt are integrally connected to each other. When wearing a seat belt, it is necessary to carry out an operation such as carrying a school bag, but such operation is difficult in a limited cabin space, especially when wearing a seat belt in the driver's seat is cramped. difficult.

Accordingly, it is an object of the present invention to improve the seat belt wearing property and the restraint performance in this type of seat belt device.

[0005]

In a vehicle seat belt device according to the present invention, seat belts disposed at left and right portions of a seat and extending in a vertical direction are connected to each other at a middle portion thereof by connecting means. Then, the present invention relates to a vehicle seat belt device in which a portion above each of the seat belts is configured as a shoulder belt portion, and the seat belt device includes:
A lower end of one of the seat belts is fixed to the seat side, a lower end of the other seat belt is removably connected to the seat side, and the connecting means is a buckle. And a tongue plate detachably connected to the buckle, and the buckle and the tongue plate are movably attached to any of the seat belts.

[0006]

In the vehicle seat belt device having the above-mentioned structure, the occupant places his hand in one of the seat belts while sitting on the seat, and then connects the lower end of the other seat belt to the seat side. Finally, the two seat belts are connected to each other at an intermediate portion thereof through a connecting means.

[0007] Thus, a portion of both seat belts above the connecting means is formed as a shoulder belt portion,
Further, a portion below the connecting means is formed as a lap belt portion, and the seat belt is worn. In this state, the seat belt device restrains the upper body of the seated occupant with the two shoulder belt portions, and restrains the lower body with the two lap belt portions in order to ensure safety in the event of a vehicle collision. is there.

Further, when the seat belt is removed, the connection between the two seat belts by the connecting means is released, and the seat belt in the mounted state can be easily removed by removing the lower end of the other seat belt from the seat side. be able to.

In the seat belt device according to the present invention, since the connecting means is movable on both seat belts, the connecting means is appropriately moved on both seat belts, so that the shoulder belt portion of the seat belt and The length of the lap belt portion can be changed, and the restraint performance of the seat belt can be set appropriately according to the physique of the occupant.

Therefore, according to the seatbelt device of the present invention, when the user wears the seatbelt, the user does not need to carry out operations such as carrying a school bag, and the seatbelt wearing property in a limited vehicle interior space is significantly improved. At the same time, the restraint is significantly improved.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIGS. 1 to 3 show a vehicle seat equipped with a seat belt device according to an example of the present invention. The vehicle seat 10 includes a seat cushion 11, a seat back 12, and a headrest 13, and the seat belt device 20 includes, as shown in FIG.
A pair of left and right retractors 21a, 21b, a pair of left and right seat belts 22, 23, an attaching means 24, and a connecting means 2
5 is provided.

Each of the retractors 21a and 21b constituting the seat belt device 20 is a known retractor having a lock function in an emergency, and is mounted above a back frame constituting the seat back 12, and each seat belt 22, 23
Is wound around each retractor 21a, 21b. In each of the seat belts 22 and 23, the right seat belt 2
3 is pulled out from the retractor 21b through a take-out opening 12b on the upper right side of the seat back 12 for a predetermined length, and the distal end thereof is fixed to the right side of the seat cushion 11.

The left end of the seat belt 22 is wound around the retractor 21a, and has a distal end facing the outside through an outlet 12a provided on the upper left side of the seat back 12. The seat belt 22 is provided with a tongue plate 24a that constitutes the attachment means 24 at its tip. The tongue plate 24a is releasably connected to a buckle 24b that constitutes a mounting means 24 provided on the left side of the seat cushion 11 in a state where the seat belt 22 is pulled out from the retractor 21a by a predetermined length.
2 is pulled out from the retractor 21a and the tongue plate 24
By connecting a to the buckle 24b, it is fixed to the left side of the seat cushion 11.

The connecting means 25 comprises a tongue plate 25a and a buckle 25b.
4A is inserted through the seat belt 22 and the buckle 25b is inserted through the seat belt 23 as shown in FIG. 4B, and has a predetermined sliding resistance in the inserted state.
The movement on the seat belts 22 and 23 is regulated by a predetermined force. The tongue plate 25a is a buckle 25b
When the tongue plate 25a is connected to the buckle 25b, the seat belts 22, 23 are connected to each other at an intermediate portion thereof.

The seat belt device 20 having such a configuration is in a state shown in FIG. 1 when not in use. That is,
In the left seat belt 22, the tongue plate 2
4a is detached from the buckle 24b and wound around the retractor 21a. On the other hand, the right seat belt 2
In 3, the lower end is fixed to the side of the seat cushion 11.

Accordingly, the occupant, while sitting on the seat 10, puts his hand into the right seat belt 23, and then pulls out the left seat belt 22 from the retractor 21a to buckle the tongue plate 24a as shown in FIG. 24b, the lower end of the left seat belt 22 is fixed to the side of the seat cushion 11, and finally the tongue plate 25a constituting the connecting means 25 is connected to the buckle 25b. Are connected at the intermediate portion as shown in FIG.

As a result, the two seat belts 22 and 23 are connected to each other, and a portion of the both seat belts 22 and 23 above the connecting means 25 is a shoulder belt portion 22.
a, 23a, and a portion below the connecting means 25 is formed as the lap belt portions 22b, 23b, and the seat belts 22, 23 are mounted.

In this state, the seat belt device 20 restrains the upper body of the occupant of the seat 10 with both shoulder belt portions 22a and 23a, and restrains the lower body with both lap belt portions 22b and 23b. Safety in the event of a vehicle collision. When removing the seat belts 22 and 23, the tongue plate 25a of the connecting means 25 is removed from the buckle 25b, and the left seat belt 22 is removed.
By removing the tongue plate 24a from the buckle 24b, by removing the lower end of the seat belt 22 from the side of the seat cushion 11, the seat belts 22, 23 in the mounted state can be easily removed.

In the seat belt device 20, the tongue plate 24a and the buckle 24b constituting the connecting means 25 are movably inserted through the seat belts 22 and 23 with a predetermined force. Is appropriately moved onto both the seat belts 22 and 23 so that the shoulder belt portions 2 of the both seat belts 22 and 23 can be moved.
The length of the seat belts 22 and 23 can be changed according to the occupant's physique by changing the lengths of the seat belts 2 and 23 and the lap belt portions 22b and 23b.

As described above, according to the seat belt device 20, when the respective seat belts 22 and 23 are worn, the operation of carrying a school bag is not required, and the respective seat belts 22 and 23 in a limited vehicle interior space are not required. 23 is significantly improved, and the restraint is significantly improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a vehicle seat equipped with a seat belt device according to an example of the present invention.

FIG. 2 is a perspective view of the seat belt in a state where a left seat belt of the seat belt device is attached to a seat cushion side.

FIG. 3 is a perspective view of the seat belt in a state where both seat belts of the seat belt device are connected to each other.

FIG. 4A is a perspective view showing the entire seatbelt device, and FIG. 4B is a cross-sectional view showing a state where the connecting means is attached to each seatbelt.

[Explanation of symbols]

10 ... Vehicle seat, 11 ... Seat cushion, 12 ...
Seat back, 12a, 12b ... take-out, 13 ... headrest, 20 ... seat belt device, 21a, 21b ... retractor, 22, 23 ... seat belt, 22a, 23a
... Shoulder belt part, 22b, 23b ... Lap belt part, 24 ... Attaching means, 25 ... Connecting means, 24a, 25a
... tongue plate, 24b, 25b ... buckle.

Claims (1)

[Claims] 1. A seat belt, which is disposed at left and right portions of a seat and extends in a vertical direction, is connected to each other at a middle portion thereof through a connecting means, and a portion above each of the seat belts is connected to a shoulder belt portion. The lower end of one of the seat belts is fixed to the seat side, and the lower end of the other seat belt is detachable to the seat side. And the connecting means includes a buckle and a tongue plate detachably connected to the buckle, and the buckle and the tongue plate are movably attached to any of the seat belts. A seat belt device for a vehicle, comprising: