JPH0213254Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seat belt device for an automobile, and particularly to a shoulder arm holding mechanism.

2. Description of the Related Art An example of a seat belt device for an automobile is a foldable seat belt device. This consists of a slide rail 1 attached to the side roof rail at the top of the door along the longitudinal direction of the vehicle body, a shoulder arm 2 slidably attached to the slide rail 1, and A belt 3 whose distal end is attached to the shoulder arm 2 and whose proximal end is fixed to the center of the vehicle body; a geared wire 4 for sliding the distal end of the belt 3 or the shoulder arm 2 along the slide rail 1; It is equipped with a motor 5 that rotates a geared wire 4 in forward and reverse directions, and when a passenger opens a door 6 to get into the vehicle, a door switch (not shown) turns the motor 5 off.
rotates in the forward direction and moves the tip of the shoulder arm 2 or belt 3 to the front of the vehicle body via the geared wire 4 so that the occupant can easily get into the vehicle.When the occupant gets in and closes the door 6, the motor 5 rotates in the reverse direction and the shoulder arm One end side of belts 2 to 3 moves toward the rear of the vehicle body, and the belt 3 restrains the occupant. Note that 7 is a buckle for emergency release provided at the tip of the shoulder arm 2, and 8 is a tongue provided at the tip of the belt 3. By locking the tongue 8 to the buckle 7, the tip of the belt 3 is released. The belt 3 is attached to the shoulder arm, and in an emergency, the tongue 8 can be removed from the buckle 7 to release the occupant from the belt 3. Reference numeral 9 denotes a retractor that is attached to the seat or near the seat in the center of the vehicle body to retract the base end of the belt 3.
is being rolled up. (Jitsukai 51-
(See Publication No. 64230).

By the way, in the seat belt device having the above-mentioned structure, when tension is applied to the belt 3 during a vehicle collision, the shoulder arm 2 deforms inward (falls over), causing the so-called belt 3 to hang. Therefore, conventionally the first
As shown in FIG. 2, a guide member 10 having an upper end 10a fixed to a side roof rail and a lower end 10b fixed to a vehicle body center pillar is used, and a guide member 10 is used between a center portion 10c of the guide member 10 and the vehicle body center pillar. By sandwiching the shoulder arm 2, the shoulder arm 2 is prevented from deforming inwardly, and the belt 3 is prevented from getting caught in the event of a vehicle collision, etc., but such conventional seat belt devices Since the guide member 10 protrudes toward the cabin side, the front seat occupants are likely to hit the side of their heads, and the rear seat occupants have a problem in that their forward view is obstructed, making them uncomfortable.

The present invention has been made with the aim of eliminating the above-mentioned conventional drawbacks, and the gist of the invention is to configure the shoulder arm 2 at the lower end of the shoulder arm 2, as shown in the drawings from FIG. 3 onwards. The tip of the locking pin 2e that connects the arm rod 2a and the buckle base 2b is bent into a substantially L shape to form a locked portion 11, and the locking portion locks the locked portion 11 to the vehicle body center pillar. 12 is provided, and by locking the locked portion 11 to the locking portion 12, the shoulder arm 2 is prevented from deforming inwardly and the belt 3 is prevented from hanging around the neck.

In the embodiment shown in FIGS. 3 and 4, the shoulder arm 2 includes an arm rod 2a, a buckle base 2b,
It consists of an arm cover 2c, a buckle case 2d, and a locking pin 2e connecting the arm rod 2a and buckle base 2b. The locked portion 11 is formed into a substantially L-shape by partially protruding the pin 2e from the buckle case 2d toward the outside of the vehicle and bending its tip 11a substantially parallel to the slide rail 1.
The locking portion 12 is fixed to the pillar inner panel 13 of the vehicle body center pillar near the rear stop position of the shoulder arm 2, that is, the stop position of the shoulder arm 2 when the belt is attached. Locked part 11
The tip end 11a of the pillar inner panel 13 is sandwiched and locked between the curved part 12a for receiving the locked part and the pillar inner panel 13.

If the vehicle collides with the locked portion 11 locked to the locking portion 12, the shoulder arm 2 will fall toward the inside of the vehicle due to the locking portion 11 locking to the locking portion 12. The stop will reliably prevent the person from getting caught on his or her neck.

Although the embodiment shown in the drawings has been described using a passable seat belt device as an example, it goes without saying that the shoulder arm holding mechanism of the present invention may be applied to an active seat belt device other than a passable seat belt device.

In summary, the present invention provides a seat belt device in which the base end, which connects the front end of the belt to the shoulder arm attached to the roof side rail, is attached to the seat in the center of the vehicle body or in the vicinity thereof.
At the lower end of the shoulder arm, the tip of a locking pin that connects the arm rod constituting the shoulder arm and the buckle base is bent into a substantially L shape to form a locked portion, and at the center pillar of the vehicle body, the locking pin connects the arm rod and the buckle base. A locking part is provided to lock the shoulder belt, and these locked parts and the locking part form a holding mechanism for the shoulder arm to prevent the shoulder belt from deforming inward (falling over) in the event of a vehicle collision, etc. Therefore, it has the following effects.

(1) The locked portion can be simply and easily formed by bending the tip of the locking pin that connects the arm rod and the buckle base.

(2) Since the locked part was formed by bending the locking pin, the locking part that locks the locked part is
It only needs to be large enough to be hung with a pin, so it can be made thinner and smaller, reducing the risk of front seat occupants hitting their heads, and also reducing the risk of rear seat occupants hitting their heads. It won't be an eyesore.

[Brief explanation of the drawing]

Fig. 1 is a side view of a conventional seat belt device, Fig. 2 is a sectional view taken along the line - - in Fig. 1, Fig. 3 is a view similar to Fig. 2 of the present invention, and Fig. 4 is an enlarged perspective view of the main parts. It is a diagram. 1... Slide rail, 2... Shoulder arm, 2a... Arm rod, 2b... Buckle base, 2e... Locking pin, 3... Belt, 11...
Locked part, 12...Locked part.

Claims (1)

[Scope of utility model registration request] In a seat belt device in which the distal end of the belt is connected to a shoulder arm attached to a roof side rail, and the base end is attached to or near a seat in the center of the vehicle body, the shoulder arm is configured at the lower end of the shoulder arm. The shoulder arm deforms inward by bending the tip of the locking pin that connects the arm rod and the buckle base into a substantially L shape to form a locked portion, and locking the locked portion to the vehicle body center pillar. 1. A holding mechanism for a shoulder arm in a seat belt device, characterized in that a locking portion is provided to prevent the shoulder arm from collapsing.