JPH0316772Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a webbing intermediate portion support device for supporting a webbing intermediate portion to a vehicle body, which is used in a seat belt device for protecting an occupant in a vehicle emergency.

[Background Art] Among seat belt devices, in those using continuous webbing, an intermediate portion of the webbing extending from the shoulder restraining portion of the occupant to the retracting device is supported by a slip joint to the side wall of the vehicle body. This slip joint allows the intermediate portion of the webbing to be freely moved in its longitudinal direction, allowing the occupant to change his or her driving posture.

In addition, this slip joint has a strong structure and is securely attached to the side wall of the vehicle body in order to reliably transmit the large tension generated in the webbing due to the inertial force of the occupant to the vehicle body in the event of a vehicle emergency.

For this reason, when a passenger, child passenger, etc. with a significantly smaller physique than a normal physique wears the webbing, the webbing may be placed in an unnatural position or the passenger seat need to be moved significantly.

[Purpose of the invention] Taking the above-mentioned facts into account, the present invention provides a webbing middle part support that allows the webbing to be easily changed to the vehicle body position even when a passenger with a different physique is seated. The purpose is to obtain equipment.

[Structure of the invention] In the webbing intermediate support device according to the invention, the winding rod is arranged below the slip joint,
A long elastic body is interposed between this winding rod and the vehicle body, and the middle part of the webbing from the slip joint to the shoulder restraint part is wrapped around the winding rod and separated from the side wall of the vehicle body, thereby restraining the shoulders. The locking position on the vehicle body can be changed. Furthermore, by making the long elastic body rotatable relative to the slip joint around the locking means and widening the angle between the long elastic body and the slip joint, it is possible to The webbing can be easily wrapped around and removed from the rod, and the long elastic body can be rotated to a position where it does not get in the way, such as at the rear of the passenger compartment, when not in use. It is designed to come into contact with the side wall of the passenger compartment at a certain position. In addition, since the long elastic body can rotate relative to the slip joint, the long elastic body rotates with respect to the slip joint, so that the long elastic body can be rotated in the path of the webbing. This makes it difficult for the webbing to come off the winding rod and to twist the webbing, and to reduce the feeling of pressure on the occupant when moving the seat.

[Embodiment of the invention] FIG. 1 shows a seat belt device to which a webbing intermediate portion support device 10 according to the present embodiment is applied.

In this seat belt device, an occupant 16 seated on a seat 14 is restrained by an occupant restraining webbing 12 in the event of a vehicle emergency. One end of this webbing 12 is locked to an anchor plate 20 fixed to a side wall 18 of the vehicle body, and the middle part is folded back by a tongue plate 22 and a webbing middle part support device 10, and then wound up by a winding device 24. .

This winding device 24 is attached to the side wall 18, and winds up one end of the webbing 12 without force.
An inertia lock mechanism is built in to instantly stop unwinding of the webbing 12 in case of a vehicle emergency.

The tongue plate 22 is also engageable with a buckle device 26, which is fixed to a tunnel portion 28 protruding from the floor at the approximate center of the vehicle and stands upright on the side of the seat 14.

The webbing intermediate portion support device 10 will be described in detail with reference to FIGS. 2 to 4.

The webbing intermediate support device 10 has a slip joint 30 similar to the conventional structure as a part thereof. In this slip joint 30, one side of the webbing winding ring 32 is used for winding the webbing 12, and a connecting plate 34 is fixed to the other side. A bolt 36 as a locking means is passed through this connecting plate 34, and this bolt 36 is attached to the side wall 18.
By being screwed into the slip joint 30
is securely secured to the side wall 18.

The bolt 36 has a step 38 near its head, and a spacer 40 is interposed between the step 38 and the side wall 18. By kneading, the slip joint 30 is rotatably attached to the side wall 18 about the axis of the bolt 36.

A circular hole 44 formed at one end of a leaf spring 42 as a long elastic body is inserted into the outer periphery of the spacer 40, and a wave washer 46 is interposed between the leaf spring 42 and the side wall 18. . The leaf spring 42 is therefore pressed against the step 38 and the bolt 3
It is designed to receive frictional resistance during six rotations.

A webbing support plate 50 is fixed to the tip of the leaf spring 42 via a pin 48. Both ends of this webbing support plate 50 are bent in a right angle direction, and a pair of winding rods 52 extend from these ends in a direction toward each other.
These winding rods 52 form webbing insertion holes 54 between them and the webbing support plate 50. This webbing insertion hole 54 communicates with the outside via a gap 56 formed between the winding rods 52. Therefore, the intermediate portion of the webbing 12 can be inserted into the webbing insertion hole 54 through the gap 56.

Here, the leaf spring 42 urges the winding rod 52 toward the side wall 18 as shown in FIG. As shown in the figure, when the middle part of the webbing 12 is wound around the winding rod 52, the winding rod 52 can be separated from the side wall 18 under the tension of the webbing 12.

Note that a bent portion 58 is formed in the middle portion of the leaf spring 42 so that the cover 60 attached to the slip joint 30 and the leaf spring 42 do not interfere with each other.

Next, the operation of this embodiment will be explained.

As shown in FIG. 2, the webbing 12 from the take-up device 24 is previously wound around the webbing winding ring 32 of the slip joint 30, and the passenger engages the tongue plate 22 with the buckle device 26 to unwind the webbing 12. As shown in FIG. 1, the three-point seat belt device can be in a bonded state.
In other words, the area between the anchor plate 20 and the tongue plate 22 serves as a waist restraint part, and the tongue plate 2
2 and the webbing intermediate support device 10 acts as a shoulder restraint. Also in this case,
The leaf spring 42 is rotated around the bolt 36 relative to the slip joint 30, for example, toward the rear of the vehicle interior (to the left in FIG. 1), so that it is moved toward the side wall 18 at a position that does not interfere with the movement of the occupant 16. can be evicted.

In the event of a vehicle emergency, the inertia lock mechanism built into the retractor 24 instantly stops pulling out the webbing 12, so that the occupant is restrained by the webbing 12. In this case, the tension generated in the webbing 12 is reliably transmitted to the side wall 18 by the webbing intermediate support device 10, so that the restrained state of the occupant 16 is maintained.

Next, when a passenger with a smaller physique than the passenger 16 is seated, the webbing 12 is located between the take-up device 24 and the webbing intermediate support device 10 and between the webbing intermediate support device 10 and the tongue plate 22. It is sufficient to arrange the part into the webbing insertion hole 54 as shown in FIG. To insert the webbing 12, rotate the leaf spring 42 slightly around the bolt 36 to a position where it is easy to work with the slip joint 30, for example, toward the front of the passenger compartment (to the right in FIG. This is an extremely simple operation since the angle with the joint 30 is widened and the operation is performed through the gap 56 between the winding rods 52.

When the occupant sits down and puts on the webbing 12, the tension generated in the webbing 12 deforms the leaf spring 42 as shown in FIG.
2 is spaced apart from the side wall 18. As a result, the webbing 12 is attached to the winding rod 52 as shown by the solid line in FIG.
Since the shape is such that the webbing is pulled out from the contact portion to the occupant's shoulder, the anchor point of the shoulder restraining portion is lowered, and the webbing can be properly attached.

The operation during a vehicle emergency is the same as described above.

As described above, since the winding rod 52 is connected to the side wall 18 via the leaf spring 42, the webbing 12 can be prevented from being twisted or shifted to one side, thereby improving the ease of attachment to the occupant 16.

In addition, in this embodiment, a reinforcing member for attaching a slip joint is provided, and a plate spring is attached to the slip joint 30 fixed to the upper part of the center pillar, which is near the joint between the center pillar and the roof side rail and has high rigidity. 42 are fastened together, there is no need to separately provide a reinforcing member to the center pillar for attaching the leaf spring 42, and the leaf spring 42 can be easily and firmly supported on the vehicle body.

Next, FIGS. 5 and 6 show a second embodiment of the present invention. This embodiment has a structure in which the webbing support plate 50 and the winding rod 52 in the previous embodiment are formed in two stages, upper and lower. That is, the winding rod 52
A U-shaped wrapping portion 62 extends from the lower end of the U-shaped wrapping portion 62, and a pair of L-shaped wrapping portions 62 extend from both sides of the U-shaped wrapping portion 62.
This is a configuration in which the letter-shaped winding rod 64 is extended. Therefore, in this embodiment, webbing insertion holes 66 and 68 are also formed between the winding rod 52 and the U-shaped winding portion 62 and between the U-shaped winding portion 62 and the winding rod 64. , these are communicated with the outside through the gap 56 and the gap 70 between the tips of the winding rods 64.

In this second embodiment, when a passenger with a small physique rides the vehicle, the middle part of the webbing 12 can be inserted alternately into the webbing insertion holes 54, 66, and 68, as shown in FIG. Similarly, the anchor point of the shoulder restraint can be lowered.

Furthermore, in this embodiment, since the middle part of the webbing 12 passes through a plurality of webbing insertion holes,
The intermediate portion of the webbing 12 can be prevented from moving in the longitudinal direction by the frictional resistance of this passing portion.

Although the above embodiment shows a structure in which the hanging rod is attached to the vehicle body using a leaf spring, it is not limited to a leaf spring, and may be a long elastic body having other shapes or made of other materials. You can.

[Effects of the invention] As explained above, in the webbing intermediate part support device according to the invention, the webbing winding rod disposed below the slip joint is a long elastic rod that is rotatable around the locking means. The long elastic body is attached to the side wall of the car body with the body and separated from the side wall of the car body with the tension of the webbing, so the long elastic body rotates relative to the slip joint around the locking means, and the long elastic body and the slip joint are rotated. By widening the angle between the webbing and the winding rod, the webbing can be easily wound on and removed from the winding rod, and the long elastic body can be moved out of the way when not in use. In addition, since the long elastic body can rotate relative to the slip joint, the long elastic body rotates with respect to the slip joint, thereby creating a long shape in the webbing path. The elastic body follows the webbing, making it difficult for the webbing to come off the winding rod, making it difficult for the webbing to twist, and having the unique effect of reducing the feeling of pressure on the occupant when moving the seat.

[Brief explanation of the drawing]

Fig. 1 is a front view of a seat belt device to which the webbing intermediate support device according to the present invention is applied, as seen from the side of the vehicle, Fig. 2 is a cross-sectional view taken along the line of Fig. 1, and Fig. 3 is Fig. 2 An exploded perspective view showing the main parts of the
Figure 4 is the operation diagram of Figure 2, and Figure 5 is the second diagram of the present invention.
FIG. 6 is a sectional view corresponding to FIG. 4 showing the embodiment, and FIG. 6 is a right side view of FIG. 5. 10... Webbing intermediate part support device, 12...
Webbing, 16... Crew, 18... Side wall, 30
...Slip joint, 42...Plate spring, 52
... winding stick, 64... winding stick.

Claims (1)

[Scope of utility model registration request] The webbing intermediate part support device supports the webbing intermediate part extending from the shoulder restraint part of the occupant to the take-up device to the vehicle body, and includes a slip joint in which a webbing intermediate part insertion hole is formed and is latched to the vehicle body side wall; a locking means for rotatably locking the slip joint to a side wall of the vehicle body; and a winding rod arranged below the slip joint and capable of wrapping a webbing extending from the slip joint to a shoulder restraint part. and an elongated elastic body which is rotatable around the locking means, supports the winding rod to the vehicle body, and separates the winding rod from the side wall of the vehicle body by the webbing tension when the webbing is wound. Features a webbing intermediate support device.