JPS6335609Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a seat belt device for a vehicle.

More specifically, the present invention relates to two adjacent sets of seat belt devices in which different combinations of tongues and buckles are prevented from being erroneously attached.

In conventional automobiles, the same seat belt device is used for the adjacent left and right seat belt devices, so there is a risk that different combinations of tongue and buckle may be incorrectly attached, especially in the rear seats.
For example, a tongue for the left seat was sometimes attached to a buckle for the right seat. In particular, in the rear seats of European cars, three sets of seat belt devices are installed, making it easy for the above-mentioned mistake to occur. On the other hand, if a seat belt device with a completely different shape is installed, the above-mentioned mistake will not occur, but this is not desirable from both a cost and a visual standpoint.

In order to eliminate the drawbacks of the prior art as described above, the present invention has many of the same component parts, and when the seat belt is worn, the external shape is similar and there is no error. To provide two adjacent sets of seat belt devices in which it is not possible to attach a tongue and a buckle in a tandem combination.

Embodiments of the present invention will be described below based on the drawings. Note that the terms "front" and "back" used in this text are based on the tongue insertion slot.

Figure 1 shows tongue A2 of one seat belt device.
and indicates buckle A1.

The tongue A2 has an engagement hole 1a in the center that fits into a tongue engagement part 3a of a latch 3, which will be described later, an insertion hole 1b at the rear through which a belt (not shown) is inserted, and a stepped part 1.
c and 1c are provided.

The buckle base 2 includes a bottom plate 2a, side walls 2b, 2b bent upward from both ends of the bottom plate 2a,
Ear portions 2c, 2c are provided which are bent inward from the upper ends of the side walls 2b, 2b.

The latch 3 has a tongue engaging part 3a in the center and shaft pieces 3b, 3b on both sides.
b is rotatably attached to the buckle base 2 by loosely fitting into fan-shaped holes 2d, 2d formed in the side walls 2b, 2b of the buckle base 2. The latch 3 also has a protruding piece 3 extending rearward.
c, and a protrusion 3d is formed on the rear end side of the protrusion piece 3c.

The latch spring 4 is fixed in front of a holder 7, which will be described later, and has an upwardly curved end 4a. Latch 3 to tongue A2
biased into the engaged position.

The buckle cover 5 has protrusions 5b, 5b inside the left and right side walls 5a, 5a, and the protrusions 5b, 5b fit into the openings 2e, 2e formed in the side walls 2b, 2b of the buckle base 2. , is fixed to the buckle base 2.

The operation button 6 has shaft portions 6a, 6a on both front sides, and the shaft portions 6a, 6a are inserted into shaft holes 5c, 5c formed inside the side walls 5a, 5a of the buckle cover 5.
By engaging with the buckle cover 5
The latch 3 is rotatably attached to the latch 3, and a pressing protrusion 6b that abuts the protruding piece 3c of the latch 3 is formed on the rear lower surface. The coil spring 6c always urges the operating button 6 upward, and the operating button 6 can be pressed through the opening 5d formed in the center of the buckle cover 5. Said buckle cover 5
A rectangular tongue insertion opening 5f is provided in the front wall 5e.

The holder 7 has a guide groove 7a in the center, side walls 7b, 7b on both sides thereof, cutouts 7c, 7c formed below the side walls 7b, 7b, and protrusions 7d on both rear sides.
7d is fixed to the buckle base 2 by fitting into the long grooves 2f, 2f formed at the rear of the side walls 2b, 2b of the buckle base 2.

The slider 8 has a convex portion 8a projecting upward from the guide groove 7a of the holder 7, and a side wall 7 of the holder 7, which is located within the cutout portions 7c, 7c of the holder 7.
Lateral arms 8b, 8b extending outward to the sides of b, 7b
, first protrusions 8c, 8c extending upward from the ends of the side arms 8b, 8b, and a second protrusion extending upward continuously from the first protrusions 8c, 8c, across U-shaped grooves 8d, 8d. 8e and 8f are provided. Further, a cutout portion 8g is formed below one of the second projections 8f. The slider 8 is connected to the rear wall 7 of the holder 7.
eject spring 8h interposed between
is constantly urged forward by

Next, the configuration of the tongue B2 and buckle B1 of the seat belt device B will be explained based on FIG. 2. In addition, when describing the configuration, if it is similar to one of the seat belt devices described above, the description will be omitted.

A recess 11d is formed in the front of the tongue B2.
On the other hand, the holder 17, which is integrated with the buckle base 12, is provided with a convex portion 17f that fits into the concave portion 11d. Instead of the convex portion 8a of the slider 8 of the buckle A1, the slider 18 has side walls 17b, 17b on the outside of the holder 17.
Wings 18i, 18i are provided which are arranged in parallel with. Note that the front ends of the wings 18i, 18i have contact portions 18i, 18i that come into contact with the tip of the tongue B2 when the tongue B2 is inserted.

The operation of the seat belt device having the above configuration will be explained next.

In the buckle A1 of the seat belt device A in FIGS. 3 and 4 before the tongue A2 is inserted, the slider 8 is positioned at the frontmost end of the holder 7 by the eject spring 8h. At this time, the protrusion 3d of the latch 3 is located below the cutout 8g of the slider 8, and the latch 3 is held downward against the latch spring 4. In this state, the upper end of the second protrusion 8f of the slider 8 is in contact with the lug 2c of the buckle base 2 due to the spring force of the latch spring 4.

From this state, insert the tongue A2 into the tongue insertion slot 5f.
When inserted into the inside of the buckle A1, the tongue A2
advances above the latch 3 without interfering with the tongue engaging portion 3a, and engages the convex portion 8a of the slider 8.
comes into contact with. Further, when the tongue A2 is pushed into the buckle A1, the slider 8 moves rearward against the eject spring 8h. When the tongue A2 is inserted to the position where the tongue engaging part 3a fits into the engaging hole 1a, the protruding part 3d of the latch 3
and the cutout 8g of the slider 8 are disengaged,
The latch 3 is rotated counterclockwise by the spring force of the latch spring 4, the tongue engaging portion 3a is fitted into the engaging hole 1a, and the tongue A2 and buckle A1 are engaged (Fig. 5). .

Note that the operation button 6 is pressed to release the engagement between the tongue A2 and the buckle A1. When the operating button 6 is pressed, the pressing protrusion 6b on the lower surface of the operating button 6 and the protruding piece 3c of the latch 3 come into contact with each other, and the latch 3 rotates clockwise against the latch spring 4. When the latch 3 is rotated until the tongue engaging portion 3a is completely removed from the engaging hole 1a, the tongue A2
is due to the restoring force of eject spring 8h,
It is thrown out of the buckle A1 via the slider 8. At the same time, the slider 8 slides forward until the cutout 8g is positioned above the protrusion 3d of the latch 3, and the latch 3 is held in the disengaged position with the tongue A2 against the latch spring 4 (the second 6
figure).

Next, the operation of the seat belt device B will be explained.
The operation of the other seat belt device is the same as that of the above-mentioned one seat belt device except for the tongue insertion process, so only the tongue insertion process will be explained and the explanation of the subsequent processes will be omitted.

When the tongue B2 is inserted into the inside of the buckle B1 from the tongue insertion opening 15f, the tongue B2 is attached to the latch 13.
Proceeding upward without interfering with the tongue engaging portion 13a, the contact portion 18 of the wings 18i, 18i
j, 18j. Further, when the tongue B2 is inserted to a position where the tongue engaging portion 13a fits into the engaging hole 11a, the engagement between the protruding portion 13d of the latch 13 and the cutout portion 18g of the slider 18 is disengaged, and the latch 13 is released from the latch spring 14. The tongue engaging portion 13 is rotated counterclockwise by the spring force of the tongue engaging portion 13.
a fits into the engagement hole 11a, and the tongue B2 and buckle B1 are engaged. In addition, in this state, the recess 11d of the tongue B2 and the buckle base 1
It fits into the convex portion 17f of the holder 17 fixed to the holder 2 (FIG. 8).

In addition, the mounting shape of one seat belt device,
The mounting shape of the other seat belt device is completely the same in appearance.

Next, a case will be described in which different combinations of tongues are inserted into the buckle.

First, a case will be described in which the tongue B2 of the seat belt device B is inserted into the buckle A1 of one of the seat belt devices A.

Insert the tongue B2 from the tongue insertion slot 5f into the buckle A.
1, the recess 11d at the tip of the tongue B2
engages with the convex portion 8a of the slider 8. When the tongue B2 is further inserted into the buckle A1 from this state, the amount of sliding of the slider 8 is reduced by the distance of the recessed part 11d of the tongue B2, and the cutout part 8 of the slider 8
g does not disengage from the protrusion 3d of the latch, and the stepped portions 11c, 11c of the tongue B2 come into contact with the front wall 5e of the buckle cover 5 before the tongue engaging portion 3a and the engaging hole 11a are engaged. . Therefore, it is no longer possible to insert the tongue B2 into the buckle A1. Therefore, the other tongue B2 and one buckle A1 do not engage with each other (FIG. 9).

Next, a case will be described in which the tongue A2 of the seat belt device A is inserted into the buckle B1 of the seat belt device B.

When the tongue A2 is inserted into the buckle B1 from the tongue insertion opening 15f, the tip of the tongue A2 is inserted into the buckle base 12 and the convex portion 17 of the holder 17, which is a single unit, before the tongue engaging portion 13a and the engaging hole 1a are engaged.
It comes into contact with the tip of f. Therefore, it is no longer possible to insert the tongue A2 into the buckle B1. Therefore, one tongue A2 and the other buckle B1 do not engage with each other (FIG. 10).

As explained above, the seat belt device of the present invention has many of the same component parts, so it is superior in terms of price, and since it looks the same, it is visually superior. . Furthermore, it is possible to provide two sets of adjacent seat belt devices in which different combinations of tongues and buckles cannot be attached.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the seat belt device A of the present invention, FIG. 2 is an exploded perspective view of the seat belt device B of the present invention, FIG. 3 is a plan sectional view of the buckle A1 of the seat belt device A, and FIG. Figures 5 and 6
The figure is a side sectional view of seat belt device A showing the action before and after the tongue is inserted, FIGS. 7 and 8 are plan sectional views showing the action of seat belt device B before and after the tongue is inserted, and FIGS. 9 and 10 are FIG. 7 is a plan sectional view showing a state after different combinations of tongues are inserted. A
1, B1...buckle, A2, B2...tongue,
11d... recess formed in the other tongue, 2,1
2... Batsukuru base, 3, 13... Latch,
4, 14... Latch spring, 6, 16... Operation button, 8a... Convex portion formed on slider, 1
7f...Convex part for fixing the buckle base.

Claims (1)

[Scope of utility model registration request] Each of the adjacent seats is equipped with a seat belt A, B consisting of a tongue A2, B2 and a buckle A1, B1. , latch springs 4 and 14 that bias the latch in the direction of engagement with the tongue, operation buttons 6 and 16 that drive the latch in the direction of engagement with the tongue, and the buckle base 2 and 12 to allow rotation of the latches 3, 13, and a recess 11 at the tip of the tongue B2.
d and a convex portion 17 that fits into the concave portion.
f is provided integrally with the buckle base 12 of the buckle B1, and the buckle A1 has a convex portion 8a at a corresponding position.
is provided integrally with the slider 8, and the buckle B
1 and the tongue A2, the tip of the tongue A2 and the protrusion 17f fixed to the buckle base come into contact and do not engage, and when the buckle A1 and the tongue B2 engage, the protrusion 8a of the slider 8 and the tongue B2 Two sets of seat belts characterized in that the recessed portion 11d of is engaged to prevent the slider 8 from sliding, and the tongue and buckle are not engaged, thereby preventing engagement of the tongue and buckle in an incorrect combination. Device.