JPH0511735Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) This invention relates to the improvement of seat belt anchors.
Specifically, the present invention relates to a seat belt locking device that can satisfactorily adjust the tightness of the seat belt.

(Prior Art and its Problems) Conventionally, the seat belt 51 attached to a vehicle includes a shoulder belt side webbing 51a that protects the shoulders of the occupant and a wrap belt that protects the abdomen of the occupant, as shown in FIG. Side webbing 51
A tongue 52 is movably attached to the webbing constituting the seat belt 51.
The seat belt 51 can be fixed by engaging with a buckle 53 fixed to the vehicle body. Further, the seat belt 51 configured in this way has a tongue 52 as shown in FIG.
is movable relative to the seat belt 51, and in order to prevent the lap belt side webbing 51b from digging into the abdomen of the occupant when the seat belt is fastened, a tongue stopper is provided on the lap belt side webbing 51b, which can be adjusted to move as appropriate. 54 is installed, and this tongue stopper 5
4 in contact with the tongue 52, the wrap belt side webbing 51b is made to have an appropriate tightness, and the tag stopper 54
It was constructed so that this could be done by adjusting the However, in such a conventional structure, when the tongue 52 is separated from the buckle 53 and the shoulder belt side webbing 51a is wound up and stored by the winder on the vehicle body side, the tongue stopper 54
Depending on the adjustment position of the webbing, the tongue stopper 54 may come into contact with the winder before the webbing is completely wound up, causing the webbing to be stored in a slack state when the belt is stored. The door would get caught in the loose webbing, and sometimes the webbing would get caught in the engine cover.

(Means for Solving the Problems) The present invention was devised in view of the above-mentioned conventional problems, and is capable of effectively preventing the seat belt from tightening, and also allows the seat belt to be wound up properly when stored. The purpose is to provide a seatbelt fastening device that is capable of fastening the seatbelt by inserting a tongue that is movably attached to the seatbelt and a fitting fitting that hangs vertically from the base of the tongue. The seatbelt locking device includes a buckle that can be fixed to the vehicle body and is fixed to the vehicle body, and the tongue has a slanted buckle above the base that contacts the inside of the seatbelt. A latching portion having a surface is formed, and the base portion has an inclined joint capable of fixing the tongue at an arbitrary position of the seat belt by clamping the seat belt between the latching surface of the latching portion. A stopper cam having a U-shaped elastic portion at its upper end and a U-shaped elastic portion at its lower end is rotatably provided, and the elastic portion of the stopper cam is attached to the buckle when the fitting is inserted into the buckle. A curved slope is formed that comes into contact and presses the joining surface in the direction in which the seat belt is clamped.

(Function) The tongue movably attached to the seatbelt is equipped with a stopper cam that can clamp the seatbelt and fix the tongue at any position on the seatbelt. There is a slope that can be pressed in the direction in which the belt is clamped, so when the tongue is inserted into the buckle and the seatbelt is fixed, the seatbelt is clamped by the stopper cam and the tongue is attached to the seatbelt. The seat belt can be fixed in any position, and if the position of the tongue is set arbitrarily, the seat belt will not tighten when the seat belt is moved, and the seat belt will be fastened with enough room. be able to.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3.

In the figure, a lap belt side webbing 1 and a shoulder belt side webbing 2 constituting the seat belt are integrally formed in a band shape, and a tongue 3 is hung on the webbings 1 and 2, and this tongue 3 is attached to a base 3a. , a hooking portion 3b integrally connected to the base 3a, a through hole 3c formed between the base 3a and the hooking portion 3b, and a through hole 3c integrally extending downward from the base 3a. a pair of fitting metal fittings 3e, and a pair of protruding pieces 3d formed on the rear side of the base 3a.
and a stopper cam 4 rotatably supported between a pair of convex pieces 3d,
The webbing 1,
2 is inserted through the through hole 3c, and the tongue 3 can be moved as appropriate along the webbings 1 and 2 through the through hole 3c. Further, a stopper cam 4 rotatably installed on the tongue 3 is attached to a hooking portion 3b of the tongue 3.
It has a joint part 4b at its upper end, which forms a joint surface B that can come into contact with a locking surface A formed on the side of the through hole 3c,
A U-shaped elastic part 4c is formed at the lower end, and a non-slip surface C is formed on the rear side of the elastic part 4c with several protrusions to prevent slipping. An abutting surface D is formed on the front side opposite to the surface C, and the non-slip surface C and the abutting surface D can be brought into contact with and separated from each other because the elastic portion 4c can be elastically opened and closed. In addition, the stopper cam 4 has a shaft portion 4a in its center.
is formed, and this shaft portion 4a is connected to the tongue 3.
It is rotatably supported between a pair of convex pieces 3d. Therefore, when the stopper cam 4 is rotated via the shaft portion 4a, the joint portion 4b can move toward and away from the hooking portion 3b side of the tongue 3, and the joint portion 4b of the stopper cam 4 engages the hooking portion 3b. When rotating to the side of surface A, the locking surface A and the joint surface B come into contact with each other, and the wrap belt side webbing 1 is firmly inserted between the locking surface A and the joint surface B, and the tongue 3 is attached to the webbing. Can be fixed.

On the other hand, the buckle 5 is formed with a fitting groove into which the fitting fitting 3e of the tongue 3 can be inserted;
The tongue 3 is removably fixed to the buckle 5 by fitting the fitting 3e into this groove.
A slope 5 is provided at the upper end of the rear side of the buckle 5 in this example.
a is recessed, and the buckle 5 has a fitting fitting 3e.
When the tongue 3 is inserted and the tongue 3 is fixed, the elastic part 4c of the stopper cam 4 is inserted into the slope 5a of the buckle 5, and the contact surface D of the stopper cam 4 and the curved surface of the slope 5a abut, and the slope 5a The contact surface D is pressed outward, so that the stopper cam 4 rotates the joint portion 4b toward the hook portion 3b of the tongue 3 using the shaft portion 4a as a fulcrum.
The joint surface B of the stopper cam 4 is firmly abutted against the locking surface A of the hanging tool 3b, and the locking surface A and the joint surface B
Wrap belt side webbing 1 sandwiched between
will be fixed to tongue 3. At this time, when the shoulder belt side webbing 2 is pulled, the lap belt side webbing 1 is more firmly held between the locking surface A and the joining surface B, and the webbing cannot be moved. On the other hand, when the wrap belt side webbing 1 is pulled, a tensile force is applied in the direction in which the joint portion 4b of the stopper cam 4 is separated from the locking surface A of the locking portion 3b, so it is possible to loosen and adjust the wrap belt side webbing 1 as appropriate. It is. Therefore, once the seat belt is fastened, in order to prevent the abdomen from tightening, it is possible to adjust the abdominal tightness by appropriately pulling the wrap belt side webbing 1. 1 is held between the webbings 1 and 2, the webbings 1 and 2 no longer move, effectively preventing abdominal tightening. On the other hand, if the lap belt side webbing 1 is too loose, press the non-slip surface C with your finger from the outside in the direction shown by S in FIG. By pressing, the joint part 4b of the stopper cam 4 can be slightly separated from the hook part 3d, and in this state, the shoulder belt side webbing 2 is pulled and the wrap belt side webbing 1 is adjusted appropriately.
can be stretched, and the wrap belt side webbing 1 can be fixed in an appropriately tightened state.
Note that when the fitting 3e is separated from the buckle 5, the elastic part 4c of the stopper cam 4 separates from the slope 5a and the elastic part 4c of the stopper cam 4 becomes free to rotate. The tongue 3 is in a free state, and the tongue 3 is in a state where it can freely move relative to the webbings 1 and 2.
is wound up and stored, and the tongue 3 does not interfere with the winding of the webbings 1 and 2.

As described above, according to the seat belt locking device of this example, when the tongue 3 is fitted and fixed to the buckle 5 when the seat belt is worn, the stopper cam 4 rotates in the direction to clamp the webbing, and the tongue is attached to the webbing. If the tongue 3 is moved to an appropriate position in advance in order to fix the seat belt, the lap belt side webbing 1 will not dig into the belly when the seat belt is worn, and the lap belt side webbing 1 can be adjusted appropriately even after the seat belt is attached. This can effectively prevent abdominal tightening. Moreover, since the stopper cam 4 does not act at all when the webbings 1 and 2 are wound up and stored on the vehicle body side, the webbings 1 and 2 can be stored in the winder well without the tongue 3 getting in the way.

(Effects of the invention) The present invention has a tongue that is movably attached to the seat belt and a fitting fitting that hangs vertically from the base of the tongue, thereby fixing the seat belt to the vehicle body. A seatbelt fastening device comprising a buckle provided therein,
The tongue is formed with a latching portion having an inclined latching surface that comes into contact with the inside of the seatbelt above the base, and the base is provided with a latching portion that allows the seatbelt to engage with the latching surface of the latching portion. A stopper cam is rotatably provided at the upper end thereof and has a U-shaped elastic portion at the lower end, and has an inclined joint surface capable of fixing the tongue at any position on the seat belt by being clamped between the buckles. is formed with a curved slope that the elastic part of the stopper cam comes into contact with when the fitting metal fitting is inserted into the buckle, and presses the joint surface in the direction in which the seat belt is fastened. As a result, the stopper cam clamps the seatbelt and fixes the tongue in an appropriate position, so it is possible to effectively prevent stomach tightening due to the seatbelt by adjusting the tongue position appropriately, and when the seatbelt is stowed, the tongue can be fixed in place. Since the seat belt can be moved freely, it has the effect that the seat belt can be stored in the vehicle body side.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the present invention, and Figure 1 is a state diagram in which the tongue is hung on the seat belt;
Figure 2 is a state diagram showing the state in which the tongue in Figure 1 is fitted into the buckle, Figure 3 is a perspective view of the fitted state in Figure 2, and Figure 4 is the overall structure of a conventional seat belt. The perspective view, FIG. 5, is an enlarged view of the main part of the conventional structure shown in FIG. 4. 1...Wrap belt side webbing, 2...Shoulder belt side webbing, 3...Tang, 3a
...Base, 3b...Latching part, 3c...Through hole, 3d
... Convex piece, 3e ... Fitting metal fitting, 4 ... Stopper cam, 4a ... Shaft part, 4b ... Joint part, 4c ...
Elastic part, 5...buckle, 5a...slope, A
... Locking surface, B ... Joint surface, C ... Non-slip surface, D ...
...Abutting surface.

Claims (1)

[Claim for Utility Model Registration] A tongue movably attached to the seat belt, and a fitting fixed to the vehicle body that allows the seat belt to be fixed to the vehicle body by inserting a fitting fitting hanging from the base of the tongue. A seatbelt locking device comprising a buckle, the tongue having a locking portion having an inclined locking surface that contacts the inside of the seatbelt above the base portion, and The base has an inclined joint surface at the upper end that can fix the tongue at any position on the seat belt by sandwiching the seat belt with the locking surface of the locking part, and a U-shaped joint surface at the lower end. A stopper cam having a shaped elastic part is rotatably provided, and when the fitting fitting is inserted into the buckle, the elastic part of the stopper cam comes into contact with the buckle, and the joining surface is connected to the seat belt. A seatbelt fastener characterized by having a curved slope that presses in the fastening direction.