JPS5828611Y2 - Seat belt length adjuster - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a seat belt length adjuster.

Conventionally, this type of seatbelt length adjuster involves inserting a prismatic adjustment bar into the side plate of the base of the main body, and winding the belt around it to lock it.
In this case, the so-called locking angle at which the belt is locked is small, and the strength of the belt is also greatly reduced due to wear (i.e., abrasion) when used many times.

This idea improves on this conventional drawback by making the adjustment bar circular in cross section and knurling the surface.
The slit into which the adjustment bar of the base side plate is inserted is formed by an inclined part on the tongue side and a horizontal part behind it (i.e. on the clip plate fitting part side), and the clip plate is inserted into the clip plate fitting part at the rear of the base. A seatbelt length adjuster that is attached from below, has a large tilt-lock angle, and has the effect of reducing strength loss (i.e., abrasion) due to seatbelt wear even after repeated use. This is what we provide.

Next, the present invention will be described with reference to the illustrated embodiment. FIG. 1 shows the main body of the adjuster of this invention, in which both sides of the base 11 are bent upward to form side plates 12, 12, and slits 16 and 17 are formed therein. The adjustment bar 4 is inserted so that it moves along the slit but does not rotate.

The tip of the base 11 is a tongue portion 13 that is inserted into the buckle, and the opposite side thereof is raised slightly upward to form a step and serve as a clip plate fitting portion 14.

A portion 15 is formed in the center of the fitting portion 14 in a slightly downwardly convex shape.

Further, an insertion hole 18 through which a seat belt is inserted is provided in the center of the base 11.

FIG. 2 shows a clip plate 2 in which a clip portion 22 is formed below a bottom plate 21 to insert and hold a belt, and a groove 24 is formed in a side wall 23 of the bottom plate 21.

At the center of the bottom plate 21 is the clip plate fitting part 1 of the main body 1.
A hole 25 is provided at a position corresponding to a downwardly convexly bent portion 15 in the center of 4.

The clip plate 2 is fitted with the side walls 23 from below along the peripheral parts 19 and 19 on both the left and right sides of the clip plate fitting part 14 of the main body 1, and the portion 15 bent downward into a convex shape of the clip plate fitting part 14. and the hole 25 in the center of the clip plate, insert the projections 32 protruding on both sides of the main body 310 of the stop plate 3 shown in FIG. It is fixed to the joining part 14.

In this case, the protrusion 32' at the upper center of the projecting piece 32 of the clip fits into the notch 24' above the center of the groove 24, so that the retaining plate cannot be removed.

FIG. 4 shows the adjuster 4, and its belt winding portion 4.
Part 1 has a circular cross section, and its surface is knurled 42.

Also, there are square insertion parts 43 at both ends of the bar into which slits are inserted.
It becomes.

As shown in Fig. 5, 16.17 has sloped parts 16' and 17' at the front (i.e., the tongue part side), and a horizontal part 1 at the rear (i.e., the clip plate fitting part 14 side).
6” and 17”.

In addition, the vertical dimension of the hole in the horizontal portion of one of the slides 16 and 17 is made slightly larger so that the adjustment bar can be inserted.

In use, as shown in FIG. 6, the seat belt is passed downward from the tongue side of the belt insertion hole 18, and after winding the adjustment bar, the seat belt is passed downward again through the insertion hole 18, and the clip of the clip plate 2 is inserted. The portion 22 is inserted through it, and its tip becomes a free end F.

When adjusting the length of the belt, pull the part 5' of the belt 5 that tightens the passenger in the direction shown by the two-dot chain line in the figure, and the adjustment par 4 will also move to the left to adjust the inclination of the slits 16 and 17. By moving to the left within the sections 16', 17', the belt becomes untight and the length of the belt can be adjusted.

Also, if the free end F is pulled to the right, the free end 5'' of the belt extends freely, and the part 5' where the belt tightens the passenger is removed.
can be tightened.

However, if the part 5' where the belt tightens the passenger is pulled to the right during use, the adjuster 4 is also pushed to the right and reaches the horizontal parts 16'' and 17'' of the slit, preventing the bar 4 from moving. Ru.

The belt is completely prevented from moving by the friction with the knurled surface of the bar and the engagement between the bar and the edge 18' of the insertion hole 18.

Therefore, the belt will never loosen after adjusting the length.

Since the insertion part 43 of the adjustment bar inserted into 16.17 is square, the bar does not rotate.

According to seven experiments with the adjuster configured with this invention, as shown in FIG. However, the device of the present invention can lock the belt even if the angle is extremely large (for example, 45' or more).

That is, the so-called tilt-lock angle can be increased.

In addition, the clip 22 is inserted through the belt, and the adjustment bar has a circular cross section, so the belt can be moved easily, there is little wear, and the strength of the belt does not deteriorate even after many years of use. (According to experimental results of ablation tests, the strength of the belt decreased by about 20% compared to the one made in the United States).

In actual use, a cover 6 as shown in FIG. 7 is fitted over the main body 1.

Although the clip plate 2 may be made of metal, it is best to make it from a light material such as synthetic resin.

The clip portion 22 is made of a tongue-like piece made of metal or synthetic resin that is bent in a wave-like manner so as to have high elasticity and is integrally molded downward from the left and right sides of the bottom plate 21 or one side thereof, or is made of a tongue-shaped piece made of metal or synthetic resin that is bent in a wave-like manner so as to have high elasticity. It consists of a tongue-shaped piece made of metal or synthetic resin that is formed to fit into the bottom plate at the lower part of one side and is bent in a wave-like manner so as to have high elasticity.

Furthermore, when this adjuster is used as a waist belt adjuster for a three-point seatbelt device that connects an eyebrow belt and a waist belt, it should be adjusted so that the mounting bracket at the end of the shoulder belt can be hooked on, as shown in Figure 8. , an engagement member 20 for engaging with another belt is formed further rearward of the clip plate fitting portion.

This engaging portion 20 has a hole 20' and an enlarged portion 20'' in the center of the hole.

For example, a fitting at the tip of a shoulder belt is hooked into this hole to support it.

It goes without saying that the base, excluding the tongue portion at the tip, can be used as a three-point single belt (so-called connecting belt) or as an intermediate length adjustment tool for a vehicle without a tractor.

This invention has the above-mentioned structure, and the tilt lock angle is large due to the simple structure and easy operation, and the operation is reliable and safe.Even after many years of use, the durability of the belt will not deteriorate due to wear. A device for adjusting the length of the seat belt with a small amount is obtained.

[Brief explanation of the drawing]

Figure 1 is the main body of the adjuster of this invention, Figure 2 is the clip plate, Figure 3 is the stop plate, Figure 4 is the adjustment bar, Figure 5 is a detailed view of the slit, and Figure 5 is the use of the adjuster. FIG. 7 is an explanatory diagram of the embodiment, FIG. 7 is a cover, and FIG. 8 is a diagram showing another embodiment of the main body when it can be used for three-point support. Explanation of symbols 1...Adjuster body, 2...
・Clip material, 3... Stopping plate, 4...
Adjustment bar, 5...Seat belt, 6...
...Cover, 11...Base, 12...
...Side plate, 13...Tang part, 14...
・・Clip plate fitting part, 15 ・・・・・ Portion bent into a downward convex shape, 16. 17 ・・・Slit, 1
8... Belt insertion hole, 20... Engagement part with other belt, 21... Bottom plate, 22...
... Clip part, 31 ... Stopping plate body, 32.
... Protruding piece, 41 ... Belt winding same part, 42
...Knurling part, 43...Insertion part.

Claims (1)

[Claims for Utility Model Registration] (1) A tongue portion 13 and a clip plate fitting portion 14 are formed at the front and rear of a base 11 having an insertion hole 18 through which a seat belt is inserted, and both sides thereof are bent upward to form a side plate 12. ,12
, and insert the adjustment bar 4 into the side plate)
16.17 is provided on the main body 1, and on both sides of the bottom plate 21 there are peripheral parts 19 on both left and right sides of the clip plate fitting part 14 of the main body 1.
．． A clip plate 2 is provided with a retaining side wall 23 that is fitted along the seat belt 19, and a clip plate 2 is formed with a clip portion 22 for inserting the seat belt under the bottom plate. Adjustment tool. (2) The above-mentioned sleeve) 16.17 is the front (tang side)
The seat belt length adjuster according to claim 1, wherein the seat belt length adjuster is characterized in that the rear side (clip plate fitting side) is horizontal. (3) Said slit) 16.17 is characterized in that the vertical dimension of the hole in the horizontal part of one of the slits is increased. Adjustment tool. (4) The seat belt length adjuster according to claim 1, wherein the adjustment bar has a circular cross section and a knurled surface. (5) The clip portion 22 is characterized in that it consists of a tongue-like piece made of metal or synthetic resin that is integrally molded downward from the left and right sides of the bottom plate 21 or from the negative side thereof and is bent in a wave-like manner so as to have high elasticity. A seat belt length adjuster according to claim 1 of the utility model registration claim. (6) The clip portion 22 is made of a tongue-shaped piece made of metal or synthetic resin and bent in a wave-like manner so as to have high elasticity and is formed so as to be fitted to the bottom plate on both left and right sides of the bottom plate 21 or on the lower side thereof. A seatbelt length adjuster according to claim 1, which is characterized by: