JPS597159Y2 - Passive seat belt device for automobiles - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a passive seat belt device for an automobile.

In a car, one end of the seatbelt is attached via a retractor to a vehicle body member (such as the floor or a member fixed to the floor) at the lower rear of the center side of the seat, and the other end of the seatbelt is attached above the rear of the door by straddling the seat. When the door is closed, the seatbelt fits across the seat from one shoulder to the other waist of the seated occupant, and when the door is opened, the seatbelt is pulled out from the retractor and moves to the front, allowing the occupant to get in and out of the vehicle. A passive seat belt device with a structure that allows freedom of movement has already been developed.

Passive seat belt devices with this structure have an extremely simple structure, are advantageous in cost, and are very effective in practice. In this case, it will be connected to a seatbelt support part that protrudes upward from the rear inner surface of the door window shoulder, so the seatbelt attachment part will have sufficient strength to support the large load that is applied to the seatbelt in the event of a collision. I have the problem of not having it.

Therefore, when the door is closed, a fixing portion of the seat belt at the door side end is engaged with the center pillar, so that the center pillar receives the load applied to the seat belt.

However, the locking piece attached to the center pillar so that the door side end of the seat belt engages when the door is closed has to protrude from the center pillar toward the door so that it can be smoothly released and secured when the door is opened and closed. If the passenger is forced to do so, there is a risk that the passenger may get caught in the protruding locking piece when getting on or off the vehicle, causing problems such as giving the passenger a sense of danger.

The present invention aims to solve the above-mentioned conventional problems, and will be described below with reference to embodiments shown in the accompanying drawings.

In Fig. 1, one end of 1 is attached via a retractor to a vehicle body member (floor or a member fixed to the floor, etc.) at the rear lower part of the center side of seat 2, and the other end is attached to the rear of the window shoulder of door 3. The seat belt is fixed by a plate 5 to the upper part of a door pole 4 provided to project upward, and the seat belt is automatically fastened and released as the door 3 is closed and opened.

Reference numeral 6 denotes a latch plate supported by an anchor bracket 8 fixed to the billboard 7, which is attached to the door pole 4 when the door 3 is closed.
A pin-shaped engagement piece 5a provided on the plate 5 at the tip engages with the locking portion 6a of the latch plate 6, and the impact load applied to the seatbelt 1 in the seatbelt fastened state is transferred to the engagement piece of the plate 5. 5a, a latch plate 6, an anchor bracket 7, and a door 7 to prevent the door pole 4, door 3, etc. from being damaged or deformed by the impact load.

9 is a through hole 10 for inserting and guiding the seat belt 1 at its tip.
The swing arm 9 swings from the rear position shown by the chain line to the front position shown by the solid line in conjunction with the closing and opening operations of the door, thereby providing a large boarding and alighting space when the seat belt is released. It looks like this.

The details of the plate 5 and latch plate 6 are described in the second section.
As shown in Figure 3.

That is, the latch plate 6 has its base end rotatably attached to the anchor bracket 8 by a shaft 11, and is biased by a spring 12 with a rotational force directed outward toward the vehicle body.

Also, there are bolts H4 on the side of the passenger compartment and the front flange of pillar 7.
, 15 etc., and the latch plate 6 etc. pivotally attached to the anchor bracket 8 are covered with a trim 13 on the interior side of the cabin. The portion 13a is rotatably constructed by a self-hinge 13b, so that the portion 13a also rotates following the rotation of the latch plate 6.

In FIG. 2, 3a is a window glass of the door 3, 16 is a reinforcement, and 17 is a weather strip attached to the villa 7. When the door is closed, the door window glass 3a comes into elastic contact with the weather strip 17. It is designed to be sealed.

In the above structure, when the door is closed, the latch plate 6 protrudes toward the door opening side as shown by the solid line in FIG. 6a, and the load applied to the seat belt 1 is received via the plate 5, the latch plate 6, and the anchor bracket 8 by the flyer 7, which is a vehicle strength member.

When the door 3 is opened, the door pole 4, plate 5, etc. move sideward and outward together with the door 3, and the engaging part 5a is connected to the locking part 6a.
Get out more.

Then, the latch plate 6 rotates outward due to the biasing force of the spring 12, and is held in contact with the weather strip 17 as shown by the chain line in FIG.
3 part a also rotates accordingly, and the latch plate 6
The seat is in a retracted state where it does not protrude into the door opening, and the problem of the passenger being caught when getting on or off the vehicle can be eliminated.

When closing door 3, press plate 5 at the tip of door pole 4.
The engaging portion 5a provided in the engaging portion 5a comes into contact with the latch plate 6 during the closing operation, and the latch plate 6
a, the engaging portion 5a slides on the latch plate 6 and engages with the locking portion 6a of the latch plate 6 as shown by the solid line when the door is fully closed. trim 1
3 of 13 1 is also pressed and the state returns to the state shown by the solid line.

As described above, according to the present invention, the latch plate provided on the pillar side is configured to be rotatable, and a spring is provided that urges the latch plate to rotate outward. In the latched state, the latch plate protrudes toward the door opening side and engages with the retaining part provided on the door side end of the seatbelt, and the load on the seatbelt is accurately received by the pillar, and when the door is opened, the latch plate is rotatably retracted in the direction along the front wall of the pillar, and does not interfere with passengers getting on and off, completely eliminating the problem of getting caught, and can bring about a great practical effect.

It goes without saying that the present invention is not limited to the door pole system as in the above embodiment, but can also be applied to systems in which the door side end of the seat belt is connected to the rear part of the window frame of the door.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view showing an embodiment of the present invention, Fig. 2 is a detailed sectional view showing a state in which the door side end of the seat belt and the latch plate part of Fig. 1 are engaged, and Fig. 3 is a second FIG. 3 is a front view of the latch plate and anchor bracket shown in the figure. 1... Seat belt, 2... Seat, 3... Door,
4... Door pole, 5... Plate, 5a... Engaging portion, 6... Latch plate, 6b... Locking portion, 7
...Pillar, 8...Anchor bracket, 11...
・Axis, 12...Spring.

Claims (1)

[Scope of utility model registration request] In a passive seat belt device, in which one end of the seat belt is attached to a vehicle body member at the rear lower part of the armpit on the center side of the seat via a retractor, and the other end is coupled to the rear part of the door, the seat belt is attached to the door side coupling part of the seat belt when the door is closed. A latch plate that is engaged by the engagement piece is mounted on the vehicle body pillar side so as to be able to rotate outwardly, and a spring is provided that applies a rotational force in a direction that causes the latch plate to rotate outwardly. A passive seat belt device for an automobile, characterized in that the latch plate is configured to rotate from a latch position protruding toward the door opening side to a retracted position almost along the front wall of the pillar when the door is opened.