JPH042109Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a webbing cover that is attached to an occupant restraining webbing used in a seat belt device for protecting an occupant in a vehicle emergency.

[Background technology]

In a seat belt device, when an occupant wears an occupant restraining webbing, the webbing restrains the occupant in the event of a vehicle emergency, thereby improving the safety of the occupant.

By the way, when the seating position of an occupant changes during normal vehicle running, the occupant's body and the webbing, particularly the shoulder webbing that obliquely restrains the occupant's upper body, move relative to each other. For this reason, the shoulder webbing may come into sliding contact with the occupant's clothing or may interfere with ornaments such as a brooch worn by the occupant on the chest. Furthermore, if the occupant wears clothing that exposes the shoulders, such as sleeveless clothing, the shoulder webbing will come into direct contact with the occupant's bare skin.

For this reason, a flexible cover has conventionally been attached to the middle part of the webbing to reduce sliding contact with clothing and interference with decorations, and to avoid direct contact with bare skin.

On the other hand, in a seatbelt device equipped with a retractor, when the webbing device is released, the webbing is wound onto the retractor. Therefore, the webbing cover attached to this type of seat belt device is required to have no adverse effect on the winding of the webbing.

However, since the webbing cover is greatly compressed in the longitudinal direction of the webbing when the webbing is wound up, the webbing cover interferes with the webbing and generates frictional resistance between the webbing cover and the webbing. If this frictional resistance is large, winding of the webbing may sometimes be stopped midway.

[Purpose of invention]

The present invention takes the above-mentioned facts into account, and aims to provide a webbing cover for a seat belt device that does not prevent smooth winding of the webbing.

[Structure of the idea]

In the webbing cover for a seat belt device according to the present invention, when the cover body is contracted, bending occurs over the entire circumference of the cover body, but the amount of bending is limited to the part of the cover body corresponding to the center part in the webbing width direction, and the part of the cover body corresponding to the webbing width direction. It is not the same as the part corresponding to the edge. Although the bending is relatively uniform in the part corresponding to the center part in the width direction of the webbing, the distortion due to the contraction of the cover body concentrates on the curved part of the cover body corresponding to the edge in the width direction of the webbing cover, causing the cover body to bend inward. A portion where the value becomes large occurs. Furthermore, it has become clear that the portion where the bending is increased comes into contact with the edge in the width direction of the webbing, increasing the sliding resistance. For this reason, the cover body has a structure that slides on the webbing when the webbing is attached and detached, and the webbing width direction edge of the cover body is made thinner than other parts over the entire length of the webbing. This allows for smooth winding of the webbing without impairing the original function of the cover.

[Example of idea]

FIG. 3 shows a three-point seat belt device to which the present invention is applied. In this seat belt device, an occupant restraining webbing 10 is attached to an occupant 14 seated on a seat 12.

One end of this webbing 10 is secured to the vehicle body side wall 18 via an anchor plate 16, and the middle part of this webbing 10 is attached to a tongue plate 2.
0, it passes through the through ring 22 and is wound up by a biasing force onto the winding device 24.

The tongue plate 20 can be engaged with a buckle device 28 that stands up from the floor 26 of the vehicle body, and the through ring 22 is fixed to the upper part of the side wall 18 of the vehicle body. Further, the winding device 24 is attached to a vertically intermediate portion of the side wall 18 of the vehicle body, and has a built-in inertia lock mechanism that instantly stops pulling out the webbing 10 in the event of a vehicle emergency.

By arranging the webbing 10 in this manner, the passenger 14 seated on the seat 12 can
0 is engaged with the buckle device 28, the webbing 10 between the anchor plate 16 and the tongue plate 20 acts as a lap webbing, and the webbing 10 between the tongue plate 20 and the through ring 22 acts as a shoulder webbing. become.

The webbing cover 30 is attached to surround the webbing 10 over substantially the entire length of the shoulder webbing portion of the webbing 10, and can be slid onto the webbing 10 by means of holder members 34 provided at both ends of the cover body 32. It is locked to.

FIG. 1 shows details of the webbing cover 30. The inner peripheral surface of the end of the cylindrical cover main body 32 is located on the outer peripheral surface of the holder member 34, and a pair of guide members 36 are located on the outer peripheral surface of the cover main body 32 at this portion. The end portion of the cover main body 32 is pressed and clamped by the holder member 34 and the guide member 36 from both the front and back sides, and is integrated with the holder member.

The holder member 34 has a shape such that a part of the side wall of a flat cylindrical body is cut out in the vertical direction. A groove is formed in the outer periphery of the holder member 34, although it is covered by the guide member 36 and cannot be seen in the figure. As shown in FIG. 2, protrusions 38A, 38B and a protrusion 38C are formed on opposing surfaces of the inner peripheral surface of the holder member 34, respectively. Projections 38A, 38B and projection 38
The distance C between the webbing 10 and the webbing 10 is narrower than the thickness of the webbing 10, and the holder member 34 is locked to the webbing by utilizing the width direction elasticity of the webbing. Further, the holder member 34 can be slid in the longitudinal direction of the webbing by applying an external force along the longitudinal direction of the webbing.

The guide member 36 is a synthetic resin plate with a U-shaped cross section, and is elastically fitted into the groove of the holder member 34 with the end of the cover body 32 sandwiched therebetween.

The cover main body 32 is formed into a cylindrical shape by overlapping a sheet of cloth at both ends along the longitudinal direction and fastening with buttons 40. Note that the overlapping portion formed by the button 40 is located at the center in the width direction of the webbing on the side opposite to the passenger to avoid interference with the passenger.

Further, the cover main body 32 is thinner in the vicinity of the edge of the webbing 10, that is, in the portion indicated by crossed diagonal lines in FIG. In the case of this embodiment, the width is about 1 cm and the thickness is thin.

Next, the operation of this embodiment will be explained. In the state shown in FIG. 3A, the upper body of the occupant 14 wearing the webbing 10 faces the lap webbing portion of the webbing through the webbing cover 30. Therefore, sliding contact between the webbing 10 and the clothes of the occupant 14 and interference with decorations are alleviated, and direct contact with bare skin is also avoided.

When the tongue plate 20 and the buckle device 28 are disengaged when the passenger exits the vehicle, the webbing 10 is wound up by the winding device 24. On this occasion,
Since the upper holder member 34 is prevented from moving by the through ring 22, the webbing 10 is wound up while being in sliding contact with the upper holder member 34. On the other hand, since the lower holder member 34 moves together with the webbing 10, as the webbing progresses, the positions of both holders approach each other, and the cover body 32 is gradually compressed to a greater extent.

When the cover main body 32 is compressed, the cover main body interferes with the webbing 10 and generates frictional resistance between the cover main body and the webbing. However, since the cover main body is located at the edge of the webbing where the greatest frictional resistance occurs, the thickness of the cover body is thin, so that no frictional resistance large enough to prevent the webbing 10 from being wound up occurs.

The webbing cover 30 is compressed as shown in FIG. 3B when the webbing 10 is stored. When the occupant 14 pulls out the stored webbing 10 to attach the webbing 10 and engages the tongue plate 20 with the buckle device 28, the cover main body 32 of the webbing cover 30 is shown by a dashed line in FIG. 3B. As such, it is located near the passenger's waist in its compressed state. Next, the occupant moves the webbing cover 30 in this state to the third position by sliding the holder member 34 located above the cover body 32 upward along the longitudinal direction of the webbing 10.
Set it to the state shown in Figure A. During this setting, the frictional resistance between the webbing 10 and the cover main body 32 is small, so no force is required to move the holder member 34.
Setup can be completed smoothly.

As described above, in this embodiment, since the cover main body is made thin only near the edge of the webbing, the frictional resistance generated between the webbing and the webbing during winding is small, and winding of the webbing is not hindered. Furthermore, since the frictional resistance is small when the compressed cover body is stretched and set, it is easy to set it. Furthermore, since the cover main body in the portion that comes into contact with the occupant has a normal thickness, the original function of the webbing cover is not impaired.

In addition, when the cover body is made of cloth as in the above embodiments, appropriate measures may be taken, such as forming a thin part during the weaving stage of the cloth, or leaving the thin part and sewing the rest of the cloth together. A thin part can be formed by When forming the thin part at the stage of weaving the fabric, the desired cover body can be easily obtained by making the thin part a coarse weave and making the other parts a relatively dense weave.

Further, when the cover body is formed into a cylindrical body from a single piece of cloth as in the above embodiment, it can be fastened with buttons, hooks, fasteners, or other suitable means.

Furthermore, it is also possible to eliminate the holder member and the like and fix the cover body directly to the through ring.

[Effect of idea]

As explained above, the webbing cover according to the present invention has a structure in which the cover body slides on the webbing when the webbing is attached and detached, and the cover body has a structure in which the webbing is attached near the edge in the width direction over the entire length in the longitudinal direction. I made it thinner than the other parts, so
This has the effect of enabling smooth winding of webbing without impairing the original function of the webbing cover.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the webbing cover according to the present invention, FIG. 2 is a sectional view of the holder member,
FIG. 3 shows a front view of the seat belt device to which the webbing cover of FIG. 1 is attached, and A shows the webbing in the attached state and B shows the webbing in the stored state. 10... webbing, 30... webbing cover, 32... cover body, 34... holder member,
36...Guide member, 40...Button.

Claims (1)

[Scope of utility model registration request] A webbing cover for a seat belt device including a flexible cover body that surrounds the webbing for occupant restraint has a structure in which the cover body slides on the webbing when the webbing is attached and detached, and the webbing width of the cover body is A webbing cover for a seat belt device, characterized in that the vicinity of the edge in the direction is thinner than other parts over the entire length in the longitudinal direction.