JPH0336702B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seat belt attachment device for a vehicle, and particularly to a seat belt attachment device suitable for a two-door vehicle.

Conventional three-point seat belts have a drawback in that it is difficult to remove the tongue plate because the anchor point of the shoulder belt is located at the rear of the passenger's seating position. Therefore, it becomes troublesome to wear a seatbelt, which is one of the causes of a decline in the rate of seatbelt use. This tendency is particularly noticeable in two-door vehicles because the anchor point of the shoulder belt is located further back. An additional drawback is that the seatbelt gets in the way when getting in and out of the rear seats.

The present invention has been made to solve the above-mentioned problems, and its purpose is to move the outer belt and the tongue plate forward when the passenger is seated so that they can be easily removed, The object of the present invention is to provide a seatbelt attachment device that can move the seatbelt to a position where getting on and off the rear seat is not hindered.

In order to achieve the above object, the present invention has a device for holding a rotating arm in a predetermined position, one end of which engages with the outer belt and the other end of which is rotatably supported by the vehicle body, and a device that holds the rotating arm in a predetermined position. a driving device for rotating the outer belt and the tongue plate attached to the outer belt when the seat is seated, and a device for detecting the wearing of the seat belt and returning the rotary arm to the predetermined position; The drive device includes seating detection means for detecting seating of an occupant, and a button that is rotatably supported by the vehicle body and is biased to protrude at one end thereof, and that engages the rotary arm when the button is protruded. The restoring device includes a guide plate disposed such that the occupant is seated, and a wire connecting the guide plate and the seating detection means. The present invention is characterized by comprising a belt-wearing detection means, and a wire that connects the belt-wearing detection means and the button and causes the button to move backward when it is detected that the occupant is wearing the belt.

Embodiments of the present invention will be described below with reference to the drawings. 1 to 10 show a first embodiment of the present invention. In the figure, 1 is a rotary arm, and 2 is a guide plate, both of which are rotatably supported on the vehicle body 14 by mounting bolts 22. One end of the rotating arm 1 and the center portion of the guide plate 2 are rotatably attached around a mounting bolt 22 via a spacer A18 and a spacer B19, as shown in FIG. 4a. Figures 3 to 5a
As shown in the figure, the rotating arm 1 has a spacer A18
It is urged to rotate counterclockwise by a torsion coil spring 20, which is disposed around the outer periphery of the rotary arm 1 and has one end 20a fixed to the vehicle body 14 and the other end 20b locked in the recess 1a of the rotary arm 1. The guide plate 2 is disposed around the outer periphery of the spacer B19, and has one end 21a fixed to the vehicle body 14 and the other end 21a fixed to the vehicle body 14.
b is urged to rotate counterclockwise by a torsion coil spring 21 which is locked in a recess 2b of the guide plate 2. Furthermore, a hook 3 is rotatably attached to the other end 1b of the rotary arm 1, as shown in FIGS. It has a blocking protrusion 3b. Note that 4 is a tongue plate attached to the outer belt 5, 6 is a guide fitting for the outer belt 5, and 7 is a retractor. Further, as shown in FIGS. 3 to 5a, the guide plate 2 has a button 15 housed in a button holder 16 and biased in the projecting direction by a spring 17 attached to one end thereof.
One end of a wire 13 is connected to the lower end of the button 15, and a wire 12 is connected to the other end 2a of the guide plate 2.

As shown in FIGS. 1, 2, and 8, a seat plate 10 is provided in the seat cushion 11, and a spherical joint 9 is provided on the lower surface of the seat plate 10.
b, the shaft 9 extends downwardly through the back surface 11a of the seat cushion 11, and the guide plate 2 is connected to the lower end 9a of the shaft 9.
The other end of the wire 12 connected to one end 2a of the coil spring 23 is provided between the seat plate 10 and the back surface 11a of the seat cushion, and the spring 23 urges the seat plate 10 upward.

As shown in FIGS. 9 and 10, a lever 25 is rotatably supported in the buckle 8 by a rotating shaft 26, and the lever 25 is connected to a button 15 attached to one end of the guide plate 2. It has an attachment portion 25a at the other end of the wire 13, one end of which is connected to the other end of the wire 13, and an arcuate portion 25b that slides into contact with the tip of the tongue plate 4 inserted into the buckle 8.

The operation of this embodiment having the above configuration is as follows. The operation will be explained in the order from when the passenger gets on the vehicle to when the passenger exits the vehicle. Note that FIG. 1 shows the state before getting into the vehicle, and FIG. 2 shows the state after seating and before the seat belt is fastened.

Before getting on the vehicle, the rotating arm 1 and the guide plate 2 are biased by springs 20 and 21, respectively, and are set in the states shown in FIGS. 1 and 3. The hook 3 is rotatably supported by the rotary arm 1, and is held in the state shown in FIG. 6 by its protrusion 3b, with the outer belt 5 hooked thereon.

When the occupant is seated, the shaft 9 is pushed down by the weight of the occupant, the wire 12 connected thereto is pulled, and the guide plate 2 connected to the wire 12 is rotated clockwise. At this time, since the button 15 is protruded by the spring 17, the side edge 1d of the rotating arm 1 is pushed by the button 15 and rotates clockwise, resulting in the state shown in FIGS. 2 and 4.
The outer belt 5 and the tongue plate 4 attached to it move to the side of the passenger. When the passenger takes the tongue plate 4 and inserts it into the buckle 8, the tip of the tongue plate 4 comes into contact with the arcuate portion 25b of the lever 25, as shown in FIG. is pulled and the button 15 connects to the wire 13
sinks (retreats). Therefore, the rotating arm 1 is biased counterclockwise by the spring 20.
rotates counterclockwise and returns to the initial position due to depression of the button 15 that prevents rotation in the same direction,
The state shown in FIG. 5 is reached, and the outer belt is fitted to the passenger.

Next, when the passenger exits the vehicle, when the tongue plate 4 is released from the buckle 8, the lever 25 is released as shown in FIG. 9, the wire 13 is loosened, and the button 15 biased by the spring 17 will protrude. shall be. However, as shown in Figure 5, button 1
5 is covered by the fan-shaped portion 1c of the rotary arm 1 and cannot protrude. When the occupant exits the vehicle, the shaft 9 is moved upward by the force of the spring 23, and the wire 12 connected thereto is loosened, so that the guide plate 2, which is biased by the spring 20, rotates counterclockwise. The button 15 slides on the fan-shaped portion 1c and protrudes when it rotates out of the range covered by the fan-shaped portion 1c. The outer belt 5 is wound up by the retractor 7, hooked on the cylindrical portion 3a of the hook 3, becomes stationary, and is reset to the initial state shown in FIGS. 1, 3, and 6. In this way, the seat belt will not interfere when getting in and out of the rear seat.

A second embodiment of the present invention is shown in FIGS. 11 and 12. The difference between this embodiment and the first embodiment is that the first embodiment
In the embodiment, the button 15 is depressed by inserting the tongue plate 4 into the buckle 8, but in this embodiment, the button 15 is depressed by the passenger pulling out the outer belt 5 from the retractor 7.

In the winding shaft 28 of the outer belt 5 whose both ends are rotatably supported by the frame 27 of the retractor 7, a portion 28 protrudes outward from the frame 27.
A small gear 29 is fixed to a, and a large gear 30 meshing with the small gear 29 is rotatably supported by a frame 27. A pulley 31 connected to the button 15 and around which a wire 13 is wound is fixed to the large gear 30. When the passenger takes the tongue plate 4 and pulls out the outer belt 5, the small gear 29 rotates clockwise, and the large gear 30 that meshes with the small gear 29 rotates counterclockwise. The wire 13 is pulled by the rotation of the pulley 31 fixed to the large gear 30, the button 15 is depressed, and the rotating arm 1 is returned to its original position. By considering the gear ratio of the small gear 29 and the large gear 30, the influence on the pull-out load of the outer belt 5 can be suppressed. As described above, in this embodiment, since the rotary arm 1 returns to its initial state at the same time as the tongue plate 4 is removed, a large amount of slack is created in the outer belt 5, making it easier to move the tongue plate 4 to the buckle 8. There are advantages.

As explained above, in the present invention, when the occupant is seated, the rotary arm rotates and the tongue plate and the outer belt are moved to a position where it is easy to put on the belt, and after the belt is worn, the rotary arm returns to the initial position so that the outer belt When exiting the vehicle, the outer belt returns to its original position and is stored in a position that does not interfere with getting in and out of the rear seat, eliminating the hassle of wearing a seatbelt for passengers and increasing the rate of seatbelt use. Furthermore, when the present invention is applied to a two-door vehicle, it has the effect of eliminating the conventional drawback that the seat belt gets in the way when getting in and out of the rear seat.

In addition, the present invention particularly includes a device that detects the fastening of the seat belt and returns the rotary arm to a predetermined position, so that when the passenger is seated, the tongue plate and the outer belt are placed at a position sufficiently close to the passenger where they can be easily worn. Even if the seatbelt is brought to a position in front of the occupant, the outer belt can be fitted to the occupant by the return of the rotating arm after the seatbelt is fastened. In order to eliminate the gap between the seat belt and the occupant, the operation when the occupant is wearing the belt becomes much easier compared to the case where the frontmost position of the tongue plate or outer belt is restricted. This effect is particularly noticeable when the seat has a sliding mechanism and is slid forward. Furthermore, in the present invention, the rotary arm is operated mechanically, and after the belt is released, the rotary arm can be reliably moved to the retracted position by the combination of the wire and the button.
There is no need to increase the belt winding force of the retractor to retract the belt auxiliary element as in the conventional retractor, and therefore there is an effect that movement of the rotary arm to the retracted position is not hindered.

[Brief explanation of drawings]

FIG. 1 is an overall front view of the first embodiment of the present invention, showing the state before riding, FIG. 2 is an overall front view showing the same after riding, and FIG. 3 is a part of FIG. 1. FIG. 4 is a partially enlarged front view of FIG. 2, FIG. 4a is a sectional view of the upper side of the same, and FIG. Enlarged front view of the main parts when the tongue plate is separated from the buckle with the passenger seated, No. 5
Fig. a is a sectional view of the same upper side, Fig. 6 is a partially enlarged front view of Fig. 1 (however, it shows a different part from Fig. 3), and Fig. 7 is a partially enlarged front view of Fig. 2 (however, it shows a different part from Fig. 3). 4), FIG. 8 is an enlarged cross-sectional view of the seat portion of the same embodiment, and FIGS. 9 and 10 are enlarged views of the buckle portion of the same embodiment. FIG. 10 shows the state before the tongue plate is inserted, FIG. 11 shows the state after the tongue plate is inserted, and FIG. 11 is an enlarged front view of the main parts showing the second embodiment of the present invention.
FIG. 12 is a side view of the same. 1...Rotating arm, 2...Guide plate, 3
... Hook, 4 ... Tongue plate, 5 ... Outer belt, 8 ... Buckle, 9 ... Shaft, 1
0... Sheet plate, 12, 13... Wire,
14...Car body, 15...Button, 20, 21...
Coil spring, 22...Mounting bolt, 25...
... Lever, 29 ... Small gear, 30 ... Large gear, 3
1...Pulley.

Claims (1)

[Claims] 1 A device for holding a rotating arm in a predetermined position, one end of which engages with the outer belt and the other end of which is rotatably supported by the vehicle body; a drive device that moves the plate forward, and a device that detects the wearing of a seat belt and returns the rotary arm to the predetermined position,
The drive device includes a seating detection means for detecting whether the occupant is seated, and a button that is rotatably supported by the vehicle body and is biased to protrude at one end thereof, and engages the rotating arm when the button is protruded. The restoring device includes a guide plate arranged so as to fit together, and a wire connecting the guide plate and the seating detection means, and the restoring device detects a spring attached to the rotating arm and whether the occupant is wearing a belt. A seatbelt attachment device comprising: a belt wearing detection means; and a wire connecting the belt wearing detection means and the button and retracting the button when it is detected that an occupant is wearing a belt.