JPH0447005Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tongue plate for buckle engagement used in a seat belt device for protecting occupants in vehicle emergencies.

[Background technology]

In the seat belt device, the webbing is attached to the occupant by engagement between the tongue plate and the buckle device.

The tongue plate is often formed with two adjacent elongated holes for movably guiding the middle part of the webbing used in a continuous three-point seat belt device. In this tongue plate, when the webbing is taken up by the winding force of the take-up device when the occupant releases the webbing, tension is generated in the middle part of the webbing, so the tongue plate is held at the middle part of the webbing and becomes unsteady. It won't slip down along the webbing easily.

However, when the tongue plate 10 is engaged with the buckle 12 and the webbing 14 is attached as shown in FIG. They overlap each other in the vicinity, increasing frictional resistance. For this reason, the shoulder webbing on one side of the folded portion cannot move in the direction of the lap webbing on the other side, or the lap webbing cannot move in the direction of the shoulder webbing, and the occupant's movements are hindered.

As shown by the imaginary line in FIG. 5, there is also a tongue plate 10 in which only the end opposite to the buckle 12 is bent to reduce the amount of webbing when the webbing is attached. This will weaken the frictional force between the tongue plate and the tongue plate, causing it to fall to the floor.

Taking the above facts into consideration, the present invention has developed a tongue plate that allows the webbing to easily move longitudinally through the folded part while the webbing is being attached, even if the tongue plate has two long holes for webbing insertion. The purpose is to obtain.

[Summary and operation of the device]

The present invention is a tongue plate in which an engaging part for a buckle device and a webbing attachment part are integrally connected, and the webbing attachment part has a pair of elongated holes for webbing insertion formed on the same plane. is,
In addition, when the engaging portion is engaged with the buckle device, the webbing attaching portion is connected to the engaging portion so as to intersect with the engaging portion at a predetermined angle that opens toward the side away from the occupant.

According to the present invention having the above configuration, a pair of elongated holes for webbing insertion are formed in the webbing attachment part on the same plane, and the webbing attachment part opens at a predetermined angle with respect to the engaging part toward the side away from the occupant. Since they are connected in a crossed manner, when the webbing is released, the frictional force between the webbing and the pair of elongated holes on the tongue plate increases, preventing the tongue plate from falling off accidentally. I can do it.

Furthermore, when the occupant engages the engaging portion with the buckle device to attach the webbing, the webbing attaching portion is connected to the engaging portion by crossing at a predetermined angle that opens toward the side away from the occupant. , the webbing enters the elongated hole in a state in which the longitudinal direction of the webbing is at a relatively angle with respect to the webbing attachment portion of the tongue plate. Therefore, the frictional resistance between the webbing and the pair of elongated holes is small, and the webbing can move smoothly.

[Example of idea]

FIG. 3 shows a tongue plate 20 according to this embodiment.
A seat belt device in which this is used is shown.
In this seat belt device, one end of the occupant restraint webbing 22 is attached to the anchor plate 24 on the side wall of the vehicle body.
6, and the intermediate portion is folded back at a slip joint 28 and wound up on a winding device (not shown) disposed inside a side wall 26 of the vehicle body.

Anchor plate 24 and slip joint 2
The tongue plate 20 disposed between the first
As shown in the drawings and FIG. 2, the mandrel 20A is covered with a synthetic resin 20B.
A portion of the mandrel 20A that protrudes from the synthetic resin 20B serves as an engaging portion 32 for engaging the buckle 30. When this engaging portion 32 is engaged with the buckle 30 that is erected from the approximate center of the vehicle, the tongue plate 20 and the slip joint 2 form a wrap webbing between the tongue plate 20 and the anchor plate 24.
Seat 3 is used as shoulder webbing between 8 and 8.
It will be attached to the passenger seated in No. 4.

A portion of the mandrel 20A covered with the synthetic resin 20B serves as a webbing attachment portion 36, and two substantially parallel elongated holes 38 and 40 are formed on the same plane in this portion. These long holes 38, 4
0, the middle part of the webbing 22 is inserted and folded back, so that the shoulder webbing and the lap webbing can have flexible lengths.

In this embodiment, as clearly shown in FIGS. 1 and 2, the engaging portion 32 is inclined at an angle θ with respect to the webbing attaching portion 36, so that the engaging portion 32 and the webbing attaching portion are inclined at an angle θ. 36 are intersected and connected.

When the tongue plate 20 is engaged with the buckle 30 as shown in FIG. 4, this intersection angle differs from the conventional example shown in FIG.
is bent in the direction away from the seated occupant.

Next, the operation of this embodiment will be explained.

FIG. 3 shows a state in which no occupant is riding the vehicle, and the webbing 22 is wound up by the urging force of a winding device (not shown), so that a weak tension is applied to the middle portion of the webbing 22. For this reason, long holes 38, 40
The front and rear webbings 22 that have been folded back are pulled out in opposite directions along the webbing attaching portion 36, and the tongue plate 20 is held in the middle portion of the webbing 22 by the frictional force between the elongated holes 38 and 40.

A seated occupant can easily grasp the tongue plate 20 held at the intermediate portion of the webbing 22, and when the engaging portion 32 is engaged with the buckle 30, the webbing 22 is in an attached state.

In this installed state, as shown in FIG. 4, the webbing attaching part 36 is inclined with respect to the engaging part 32 by an angle θ, so that the longitudinal axis of the webbing 22 before and after being folded back at the elongated holes 38 and 40 is different from that of the conventional example. Since the webbing 22 is wound around the webbing attachment portion 36 in an upright state, the frictional force between the webbing 22 and the circumferential edges of the elongated holes 38 and 40 is small. For this reason, shoulder webbing and lap webbing have long holes 38 and 4.
It is movable and flexible with respect to each other through the zero portion and can have an appropriate webbing length.

Note that the intersection angle θ in the above embodiment is 20 degrees to 60 degrees.
A range of degrees is preferred.

[Effect of idea]

As explained above, in the present invention, a pair of elongated holes for webbing insertion are formed in the webbing attachment part on the same plane, and when the engagement part is engaged with the buckling device, the webbing attachment part is inserted into the engagement part. Since the tongue plate is connected at a predetermined angle that opens toward the side away from the passenger, it has the excellent effect of holding the tongue plate to the webbing when the webbing is released, and allowing the webbing to move when the webbing is attached. have

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a tongue plate according to an embodiment of the present invention, Fig. 2 is a sectional view taken along the line of Fig. 1, Fig. 3 is a front view seen from the front of the vehicle showing a state in which the webbing is not attached; FIG. 4 is an enlarged sectional view of the engaged state of the tongue plate and the buckle device, and FIG. 5 is a sectional view of the conventional tongue plate engagement corresponding to FIG. 4. 20... tongue plate, 22... webbing, 30... buckle, 32... engaging portion, 36...
...Webbing attachment part, 38...long hole, 40...long hole.

Claims (1)

[Scope of utility model registration request] A tongue plate in which an engaging part for a buckle device and a webbing attaching part are integrally connected, the webbing attaching part having a pair of elongated holes for webbing insertion formed on the same plane, and The tongue plate is characterized in that, when the engaging part is engaged with the buckle device, the webbing attaching part is connected to the engaging part so as to intersect with the engaging part at a predetermined angle that opens toward a side away from an occupant.