JPH0341962Y2 - - Google Patents

Description

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

[Background Art] In a seatbelt device, the middle part of the webbing worn by an occupant when the vehicle is running is supported by a support device to the vehicle body, thereby ensuring that the occupant is properly fitted with the webbing.

In this webbing support device, the middle part of the webbing is wound around a main body that is attached to the vehicle body and is inverted, so that the webbing can freely move in the longitudinal direction when an occupant attaches or releases the webbing or when changing the driving position.

Therefore, a predetermined tension is generated in the webbing in response to the winding force of the winding device, and the webbing is brought into close contact with the occupant to improve restraint in the event of a vehicle emergency. In order to improve this restraint, it is necessary that the webbing tension always acts on the occupant, and therefore the webbing tension acts on the occupant as a compressive force.

[Purpose of the invention] Taking the above facts into consideration, the present invention has a simple structure that eliminates the feeling of pressure on the occupant while wearing the webbing without increasing the load on the webbing, and allows the occupant to wear the webbing appropriately. It is an object of the present invention to provide a webbing support device that can be maintained.

[Structure of the invention] The webbing support device according to the present invention is a webbing support device that supports the middle part of the webbing that is urged in the winding direction by the winding force of the winding device, and is attached to a vehicle body. a main body having a pair of opposing pieces; a wrapping member that is stretched between the pair of opposing pieces and wraps around the intermediate portion of the webbing; a webbing holding member that is arranged parallel to the wrapping member; and a webbing holding member that is arranged parallel to the wrapping member; are perforated in each of the holes to accommodate both ends of the clamping member, so that the webbing clamping member can be moved to a first position where the webbing is clamped between the webbing member and the winding member by the frictional force when the webbing is wound. The holding member is characterized by having a pair of elongated holes that allow the holding member to be moved to a second position separated from the winding portion by the frictional force between the holding member and the webbing when the webbing is pulled out.

Therefore, when the occupant wears the webbing properly, the webbing comes into contact with the webbing clamping member, and the frictional force when winding up the webbing moves the webbing clamping member to the first position along the pair of elongated holes. Move to. Therefore, the webbing is held between the webbing holding member and the winding part, and the tension acting on the part to which the occupant is attached can be reduced. In addition, due to the wedge effect of the webbing clamping member that moves along the pair of long holes, the webbing clamping force of the webbing clamping member increases, and can sufficiently resist the webbing winding force of the winding device, so that the webbing can be properly gripped by the occupant. This makes it possible to reliably maintain a state in which the webbing is attached.

On the other hand, when the passenger pulls out the webbing,
Due to the frictional force with the webbing, the webbing holding member moves along the pair of elongated holes to a second position away from the wrapping portion. Therefore, the load for pulling out the webbing does not increase. In addition, when slack occurs between the webbing and the passenger, the webbing holding member stops at a position away from the webbing, so the webbing is wound up by the webbing winding force of the take-up device, and the webbing is tightly attached to the passenger. I'm starting to let them do it.

[Embodiment of the invention] Figs. 1 and 2 show a sectional view and an exploded perspective view of a webbing support device 10 according to this embodiment, and Fig. 3 shows a seat belt using this webbing support device 10. A front view of the device is shown.

As shown in FIGS. 1 and 2, the main body 12 of the webbing support device 10 is fixed to a side wall 16 of the vehicle body with bolts 14.

An opening 18 is formed in the center of the main body 12, and serves as a passage for the occupant restraint webbing 20. One end of the webbing 20 is wound onto a winding device 22 attached to the side wall 16 of the vehicle body, as shown in FIG. The winding device 22 has an elastic body such as a spiral spring built therein to apply a winding force to the webbing 20. Also, the winding device 22
Built-in is an inertia lock mechanism that abruptly stops the webbing 20 from being pulled out in the event of a vehicle emergency. The webbing 20 that has been folded back by the webbing support device 10 is folded back again by the tongue plate 24, and then the tip end thereof is locked to the vehicle body side wall 16 via an anchor member 26. This tongue plate 24 is a buckle device 3 installed upright from the approximate center of the vehicle.
8.

Therefore, when the occupant 32 seated on the seat 30 engages the tongue plate 24 with the buckle device 28, the webbing 20 between the anchor member 26 and the buckle device 28 acts as a wrap webbing, as shown in FIG. The webbing between 28 and the webbing support device 10 acts as shoulder webbing.

Opening 18 in body 12 as shown in FIGS.
The middle part of the webbing 20 passing through the opening 18
The protective member 36, which serves as a wrapping member, is attached to a wrapping plate 34 located on the lower side of the protective member 36, and is folded back. The protective member 36 has an arcuate cross-sectional shape as shown in FIG.
The middle part of the webbing 20 can be smoothly guided. For this reason, it is desirable that the protective member 36 be made of a material with a smooth surface, such as synthetic resin.

Leg plates 38 and 40 are bent at right angles from both sides of the main body 12 and extend parallel to each other. A lock bar 42 as a webbing holding member is spanned between these leg plates 38, 40. This lock bar 42 has a cylindrical shape, and its surface is provided with fine irregularities so as to have a large frictional force between it and the webbing 20.

Further, rectangular protrusions 44 are formed at both ends of the lock bar 42 in the axial direction, and are housed in a pair of elongated holes 46 formed in the leg plates 38 and 40. Therefore, the lock bar 42 is movable in the longitudinal direction of the elongated hole 46. The longitudinal direction of this elongated hole 46 is inclined as shown in FIG. It is possible to move between the second position shown in FIG.

In addition, when the lock bar 42 is separated from the protection member 36, the webbing 20 is bent as shown by the imaginary line in FIG. In this state, the webbing 20 does not come into contact with the webbing 20, but in the solid line state when the webbing 20 is properly attached to the occupant due to the biasing force of the take-up device 22, the webbing 20 can come into contact with the webbing 20. Therefore, this lock bar 42 is the webbing 2.
When the webbing 20 is in contact with the winding device 22
When it is moved in the winding direction, it moves in the longitudinal direction of the elongated hole 46 due to the frictional force between it and the webbing 20, resulting in the state shown in the imaginary line in FIG.

Next, the operation of this embodiment will be explained.

If the occupant 32 engages the tongue plate 24 with the buckle device 28 after sitting on the seat 30,
As shown in FIG. 3, the three-point seat belt device is in a fitted state.

When the webbing 20 is properly attached to the occupant 32, the winding force of the winding device 22 acts on the webbing 20 to generate tension.

Therefore, the webbing 20 is in the state shown by the solid line in FIG. Therefore, the webbing support device 10
The webbing 20 between the protective member 3 and the passenger 32
6 and abuts against the surface of the lock bar 42. As a result, when the webbing 20 moves a certain amount due to the winding force of the winding device 22, the lock bar 42 moves together with the webbing 20, and locks the webbing 20 between it and the protection member 36.
As a result, no tension is generated in the webbing 20 between the webbing support device 10 and the tongue plate 24, and the occupant 32 can ride comfortably. Furthermore, due to the wedge effect of the lock bar 42 moving along the elongated hole 46, the gripping force of the lock bar 42 on the webbing 20 becomes large, and can sufficiently resist the webbing winding force of the winding device, thereby providing appropriate support to the occupant. The state in which the webbing is attached can be maintained reliably.

Further, when the webbing 20 is temporarily pulled out from the take-up device 22 due to the occupant 32 changing his or her driving posture, the lock bar 42 returns to the solid line state in FIG. 1 and releases the webbing 20 from being clamped. In this way, the crew member 32 pulls the webbing 20 onto the winding device 22.
When the lock bar 42 is pulled out from the webbing 20, the frictional force with the webbing 20 moves the lock bar 42 along the elongated hole 46 to the second position (solid line state in FIG. 1) where it is separated from the webbing 20. will not increase. When the occupant 32 returns to the normal riding condition, the webbing 20 that has been pulled out is bent as shown by the imaginary line in FIG. For this reason, the webbing 20 is not in contact with the lock bar 42 and is wound up by the winding device 22 under the winding force of the winding device 22. Crew member 32
When the webbing 20 is wound up until it is properly attached, the webbing 20 returns to the solid line state in FIG. 1, and the lock bar 42 operates to release the tension on the webbing 20.

In case of a vehicle emergency, the winding device 22 removes the webbing 20.
Since the drawer of the vehicle is locked, the occupant 32 is placed in a restrained state. Even in such a restrained state, the webbing 20 is properly attached to the occupant 32, so that the restraint is reliable.

Next, FIG. 4 shows a webbing support device 48 according to a second embodiment of the present invention.

In this webbing support device 48, a ring 50 in which a round bar is bent into an oval shape and a plate material 52 that holds one side of this ring 50 form a main body.This plate material 52 is fixed to the vehicle body, and the ring 50 is The other side serves as a part for wrapping the webbing.

The bracket 54 has a pair of leg plates 56,
58 are bent at right angles and extend parallel to each other. These leg plates 56, 58 are formed with elongated holes 46, similar to the leg plates 38, 40 of the previous embodiment, so that a lock bar 42 is attached thereto and is movable.

Circular holes 60, 62 are formed in the leg plates 56, 58, and these communicate with the outside via narrow width portions 64, 66.

Therefore, when one side of the ring 50 is inserted into the circular holes 60 and 62, the bracket 54 is attached to the ring 50, and the lock bar 42 is attached to the other side of the ring 50, as shown in phantom lines in FIG. Together, they constitute a clamping means.

The operation of this embodiment is similar to that of the previous embodiment.

Therefore, in this embodiment as well, the lock bar 76 constitutes a clamping means together with the protection member 36, and is designed to perform the same function as in the previous embodiment.

Next, FIG. 5 shows a webbing support device 80 according to a third embodiment of the present invention. In this embodiment, the main body is constituted by the ring 50 and plate material 52 of the second embodiment shown in FIG. 4, and a synthetic resin cover 82 that is attached to the ring 50 through circular holes 60, 62.

The synthetic resin cover 82 has leg plates 82 from both sides thereof.
A and 82B are bent at right angles and extend parallel to each other, and the circular holes 60 and 62 are formed in these leg plates 82A and 82B.

The leg plates 82A, 82B have U-shaped recesses 86 formed on their opposing surfaces to accommodate both ends of the lock bar 84. This lock bar 84 has unevenness formed on its outer periphery and has a star-shaped cross section perpendicular to its longitudinal direction, and an unevenness 88 is formed on the upper surface of the U-shaped recess 86 corresponding to the unevenness.

Therefore, as shown in FIGS. 5 and 7, even if the webbing 20 between the ring 50 and the tongue plate is under tension and the webbing 20 is pulled in the direction of the passenger's attachment part, the lock bar 84 remains in place. rotates clockwise and does not approach the ring 50, but when the webbing of the passenger attachment part is pulled toward the ring 50, it rotates counterclockwise.
The unevenness on the outer periphery of the lock bar 84 engages with the unevenness 88, so that the lock bar 84 clamps and locks the webbing between it and the ring 50.

[Effects of the invention] Since the present invention has the above-mentioned configuration, it is possible to eliminate the feeling of pressure on the occupant when the webbing is worn with a simple structure without increasing the webbing pull-out load, and to ensure that the occupant is properly fitted with the webbing. It has excellent effects that can be maintained reliably.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a first embodiment of the webbing support device according to the present invention, Fig. 2 is an exploded perspective view of the first embodiment, and Fig. 3 is a sectional view showing a vehicle to which the first embodiment is applied. 4 is an exploded perspective view showing the second embodiment of the present invention, FIG. 5 is a sectional view showing the third embodiment of the invention, FIG. 6 is an exploded perspective view of the third embodiment, and FIG. The figure is an enlarged view showing a part of the cover. 10... Webbing support device, 12... Main body,
20...Webbing, 36...Protection member, 42...
... Lock bar, 48 ... Webbing support device, 5
0...Ring, 52...Plate material, 68...Webbing support device, 70...Main body, 76...Lock bar, 80...Webbing support device, 82...Synthetic resin cover, 84...Lock bar, 86...U Glyph recess.

Claims (1)

[Scope of utility model registration request] A webbing support device that supports an intermediate portion of webbing urged in a winding direction by a winding force of a winding device, the device comprising: a main body attached to a vehicle body and having a pair of opposing pieces; and a main body having a pair of opposing pieces. A winding member that is stretched between them and wraps around the middle part of the webbing, a webbing clamping member that is arranged parallel to the winding member, and a webbing clamping member that is bored between the pair of opposing pieces to accommodate both ends of the clamping member. The webbing holding member can be moved to the first position where the webbing is held between the webbing and the winding member by the frictional force when the webbing is wound up, and the webbing holding member can be moved to the first position by the frictional force between the webbing and the webbing when the webbing is pulled out. A webbing support device comprising: a pair of elongated holes that allow the holding member to move to a second position spaced apart from the wrapping portion.