JPS6123490Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seatbelt adjuster, and more particularly to a seatbelt adjuster that prevents the seatbelt from loosening when the seatbelt is attached or detached or while the seatbelt is being worn.

A conventional seat belt adjuster will be explained with reference to FIGS. 1 and 2.

A through hole 3 for the webbing 2 is provided approximately at the center of the base plate 1 . This insertion hole 3 has an open end 4 and an open end 5 facing each other. A lock bar 7 is disposed across the insertion hole 3 between arm portions 6 formed on both sides of the base plate 1 and having a substantially semicircular longitudinal section. This lock bar 7 is movable in the left and right directions in FIG. The webbing 2 is inserted into the insertion hole 3 from below the base plate 1 and is wound around the lock bar 7. The cover 8 is fixed to the top of the base plate 1.

In the above configuration, when the webbing 2 is fixed at a predetermined position, if only the lower webbing 2 in FIG. 1 is pulled to the right in FIG. 1 (that is, in the lock direction), the lock bar 7 will also move in the same direction. However, the webbing 2 is tightened between the lock bar 7 and the open end 4, and the webbing 2 is locked. Therefore, if the lower webbing 2 is attached in a state where such a lock is performed, the occupant can be restrained by the webbing 2.

Conversely, when adjusting the length of the webbing 2, move the lock bar 7 to the left by operating the webbing 2 in FIG.
When only the lock bar 7 is pulled to the right in the figure, the lock bar 7 moves in the opposite direction to the locking direction, the lock between the lock bar 7 and the opening end 4 is released, and the webbing 2 slides against the lock bar 7. It becomes possible to move.

However, in this conventional adjuster, when the seat belt is attached or detached or when the seat belt is attached, the webbing 2 is positioned as shown in FIG. 3, and the lock between the lock bar 7 and the opening end 4 is There was a problem in that the seat belt easily became loose and the seat belt could not be reliably locked.

Furthermore, when adjusting the length of the webbing 2, the webbing 2 often tightens between the open end 5 and the lock bar 7, and as a result, the webbing 2 (and lock bar 7) is repeatedly tightened to adjust the length. had to be reciprocated between the open ends 4 and 5, which caused problems in that the adjustment operation was difficult and the force required for adjustment was greater than necessary.

This idea was created in view of the problems mentioned above.
The object is to provide a seat belt adjuster that improves the reliability of locking the seat belt and the operability of adjustment.

The present invention includes a base plate in which a webbing insertion hole is formed, and a lock bar movably disposed on the base plate across the insertion hole, and the webbing inserted through the insertion hole is attached to the lock bar. A well-structured seed belt adjuster that can be wrapped around the webbing has a bundling part that bundles the webbing together and presses it in the inner thickness direction at one end, and a proximal end part that is fixed to the base plate at the other end, The present invention is characterized in that a sleeve is provided, which includes a hinge portion that passes through the insertion hole and holds the bundled portion so as to be in contact with the other surface of the base plate.

Next, one embodiment of the present invention will be described based on FIGS. 4 to 6. Note that the same parts as in FIGS. 1 to 3 are given the same reference numerals, and detailed description thereof will be omitted.

The sleeve 9 has a proximal end 10 and a hinge part 11.
and a bundling portion 12, and is molded from a material having appropriate rigidity and flexibility, such as a synthetic resin material. The base end portion 10 is disposed near the open end 5, preferably in a fixed state. The bundling part 12 is
The webbings 2 are bundled into a substantially C-shape and pressed together in the thickness direction, and the hinge portion 11 connects the bundled portion 12 to the right in FIG.
It is held as close as possible so that it is in contact with the bottom surface of the

Next, the effect will be explained.

First, in the locked state shown in FIG. 4, the sleeve 9 holds the webbing 2 in the right direction in FIG. 4, so the webbing 2 does not become unstable as shown in FIG. Therefore, the locked state shown in FIG. 4 will not be disrupted even by external factors such as putting on and taking off the seat belt or the body posture of the driver. Furthermore, the bundling part 12 clamps and presses the webbing before and after the part of the webbing 2 wrapped around the lock bar 7 in the thickness direction, thereby also ensuring the locked state.

When it is desired to adjust the length of the webbing 2, the lock state is released by slightly bending the sleeve 9 in a direction approaching the base plate 1 at right angles, and then pulling the webbing 2 that is in contact with the open end 4. The webbing 2 can slide against the lock bar 7.

Note that even if the lock bar 7 is moved in the unlocking direction during the length adjustment operation of the webbing 2, the hinge portion 11 of the sleeve 9 does not allow the lock bar 7 to approach the open end 5 side beyond a certain level, so that the lock bar 7 and The webbing 2 is not tightened with the open end 5, and the length of the webbing 2 can be adjusted smoothly.

The material of the sleeve in the present invention may be any material as long as it has a predetermined stiffness and flexibility, but since there is no need to make any changes to the conventional adjuster itself, it can be produced at low cost.

Furthermore, the adjuster of the present invention can be provided at any location on the seat belt.

As detailed above, according to the present invention, since a sleeve is provided to hold the webbing in the locked position,
Since the binding portion of the sleeve restricts the seat belt from slipping, and the hinge portion presses the seat belt against the base plate, it is possible to improve the reliability of locking the seat belt and the operability during adjustment.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional view of a conventional seat belt adjuster, Figure 2 is a perspective view of the same with the cover partially open, and Figure 3 is a longitudinal sectional view of the same with the webbing loosened. , FIG. 4 is a longitudinal sectional view of an embodiment of the present invention, FIG. 5 is a perspective view of the same, and FIG. 6 is a longitudinal sectional view of an embodiment of the present invention.
FIG. 4 is a local explanatory diagram of the bundling portion 12 seen from the direction of FIG. 4A. 1...Base plate, 2...Webbing, 3
...Insertion hole, 7...Lock bar, 9...Sleeve.

Claims (1)

[Scope of utility model registration request] A seat belt adjuster includes a base plate having a webbing insertion hole and a lock bar movably disposed on the base plate across the insertion hole, and the webbing inserted through the insertion hole is wound around the lock bar. The seat belt adjuster has a bundling portion at one end for bundling the webbing together and pressing the webbing in the thickness direction, and a base end portion at the other end for being fixed to the base plate.
a sleeve extending through the insertion hole and having a hinge portion for holding the bundling portion in contact with a lower surface of the base plate.