JP3147705B2 - Automotive seat belt device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile seat belt device, and more particularly to a seat belt anchor attached to a center pillar and comprising a plurality of parts, and a seat belt slidably supported by the seat belt anchor. The present invention relates to an automobile seatbelt device comprising:

[0002]

2. Description of the Related Art A reinforcing panel for a seat belt is disposed inside a center pillar composed of an outer panel and an inner panel, and a part of the reinforcing panel for the outer panel connected to the inside of the outer panel is spaced from the outer panel. There has been proposed a pillar structure of a vehicle body in which the contact surface is bent to form an abutment surface. 2-237873). According to this pillar structure, the amount of protrusion of the anchor portion of the seat belt into the vehicle compartment can be reduced.

By the way, the applicant of the present application has disclosed FIG.
As shown in FIG. 11 and FIG. 11, an allowable displacement interval 274 for absorbing energy is provided between the rail 264, which is a component of the seat belt anchor 252, and the slider 260, and when an impact load is applied, the energy absorbing means is used. Japanese Patent Application No. 5-23344 proposes an automobile seat belt device capable of deforming a claw 260a of a certain slider 260 and thereby absorbing impact energy (Japanese Patent Application No. 5-23344; Japanese Patent Application Laid-Open No. 7-149284).
Publication).

[0004]

According to the seat belt device of the above proposal, when a large load such as an impact load is applied to the slider from the interior of the vehicle, the energy absorbing means is deformed within the allowable displacement interval, Although energy can be efficiently absorbed, it is not always effective when a load is applied to a portion separated from the slider.

It is an object of the present invention to provide an automobile seat belt device capable of efficiently absorbing energy in a portion other than a slider of a seat belt anchor.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a rail fixed to a center pillar of an automobile, a slider movable along the rail and capable of adjusting a vertical position, and the center. An automobile seatbelt device comprising: a seatbelt anchor having a slide plate which is located in a vehicle cabin of a pillar at a distance allowing displacement for energy absorption and has a slide plate which moves together with the slider. And a bolt that fixes the center pillar to the center pillar, and is disposed between the head of the bolt and the slide plate within the interval, and displaces energy when a large load such as an impact load is applied from the vehicle interior. Means for absorbing. The energy absorbing means is disposed so as to cover the head of the bolt in the vehicle interior regardless of the position of the slide plate.

When a large load such as an impact load is applied from inside the vehicle cabin, the energy absorbing means is displaced between the head of the bolt and the slide plate to absorb energy.

According to this invention, when a large load such as an impact load is applied from the interior of the vehicle to a portion other than the slider of the seat belt anchor, the energy absorbing means is displaced,
Energy can be efficiently absorbed to reduce the impact load.

In another aspect, the energy absorbing means is attached to the slide plate and moves near the head of the bolt. In still another invention, the energy absorbing means is attached to the bolt.

The energy absorbing means attached to the slide plate and moving near the bolt or the energy absorbing means attached to the bolt is displaced to absorb energy.

According to the present invention, the energy absorbing means is displaced between the head of the bolt and the slide plate, so that the energy can be efficiently absorbed and the impact load can be reduced.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Referring to FIGS. 1 and 2 showing a cross-sectional state, a seat belt anchor 52 composed of a plurality of parts, which is attached to a center pillar 50 having a known structure of an automobile, and slidably supported by the seat belt anchor 52. And a seat belt 54. In all the embodiments, the same components are denoted by the same reference numerals, and redundant description will be omitted.

The center pillar 50 is covered by a garnish 56 made of a resilient material such as foamed urethane and capable of absorbing energy by itself.

The seat belt anchor 52 comprises a plurality of parts. In the illustrated embodiment, the seat belt anchor 52 is
An anchor plate 58 for supporting the seat belt 54, a slider 60 for attaching the anchor plate 58, a hole in the garnish 56 which is attached to the slider 60 and covers the center pillar 50 in the vehicle interior, and is necessary for the slider 60 to move. The vehicle includes a slide plate 62 for closing the portion 56a outside the vehicle compartment of the garnish 56, a rail 64 for supporting the slider 60 so that the height position can be adjusted, and a rail fixing bolt 70 for fixing the rail 64 to the center pillar 50.

Anchor plate 58 and slide plate 6
Reference numeral 2 is attached to the slider 60 by screwing an anchor plate fixing bolt 68 into a nut 66 fixed to the slider 60. The rail 64 is fixed to the center pillar 50 at the upper and lower ends of the rail 64 by rail fixing bolts 70. The slider 60 of the seat belt anchor 52 allows the occupant to move along the rail 64 to adjust the height position as desired, and the slide plate 62 allows the garnish hole 56a to be moved regardless of the position. It is a length that can always be closed.

In the first embodiment shown in FIGS. 1 and 2, the resin rib 72, which is a means for absorbing energy by displacing within the displacement allowable interval 74 between the center pillar 50 and the slide plate 62, The slide plate 62 is integrally provided at both ends in the moving direction by injection molding. When the head of the rail fixing bolt 70 protrudes toward the passenger compartment, the resin rib 72 as an energy absorbing means is provided so as to be located near the rail fixing bolt 70.
That is, regardless of the position of the slider 60 of the seat belt anchor 52, that is, the position of the slide plate 62 (the uppermost position or the lowermost position), the resin rib 72 always covers the rail fixing bolt 70 in the vehicle interior.

As a result, as shown in FIG.
When a load is applied in the direction A in the vicinity of the rail fixing bolt 70 disengaged from the slider 60, the load is transmitted to the resin rib 72 via the slide plate 62, and the resin rib 72 connects the center pillar 50 to the slide plate 62. It is displaced within the displacement allowable interval 74 between. At this time, FIG.
As shown in the figure, the center pillar 50 and the slide plate 6
2, a rib 72b between the rail 64 and the slide plate 62, and a rib 72c between the head of the rail fixing bolt 70 and the slide plate 62. If these ribs 72a,
72b and 72c are respectively displaced and absorb energy.

In the second embodiment shown in FIG. 4 in a sectional view and FIG. 5 in a perspective view, a resin rib 76 as an energy absorbing means extends from the upper end to the lower end in the moving direction of the slide plate 62. , A box shape surrounding the periphery of the slide plate 62, and the slide plate 62
Are integrally provided by injection molding. Also in this embodiment, regardless of the position of the slide plate 62,
The head of the rail fixing bolt 70 is covered by a box-shaped resin rib 76 in the vehicle interior.

According to the second embodiment, when a load is applied to the garnish 56 from the vehicle interior, the load is transmitted to the box-shaped resin rib 76 via the slide plate 62. Then, the resin rib 76 is displaced within the displacement allowable interval 74 between the center pillar 50 and the slide plate 62. At this time, as shown in the figure, a resin rib 76 is formed like a rib 76a between the center pillar 50 and the slide plate 62 and a rib 76b between the rail 64 (or the center pillar 50) and the slide plate 62. If you do,
These ribs 76a and 76b are displaced to absorb energy.

The above-described resin ribs 72 and 76 are integrally provided on the slide plate 62 by injection molding. Instead, resin ribs formed separately may be integrally fixed to the slide plate 62 by bonding, heat caulking, or the like.

In the third embodiment shown in FIG. 6 in a sectional view and in FIG. 7 in a perspective view, a urethane material 78 is integrated with the slide plate 62 by welding or the like as an energy absorbing means instead of a resin rib. Is provided.

According to the third embodiment, similarly to the above-described embodiment, the urethane material 78 is provided near the rail fixing bolt 70 so as to always cover the head of the rail fixing bolt 70. It is displaced within the displacement allowable interval 74 between the center pillar 50 and the slide plate 62 to absorb energy.

In the fourth embodiment shown in FIGS. 8 and 9 in a sectional view, rail fixing bolts 7 are used as energy absorbing means.
A resin cap 80 having a rib is integrally provided on the head portion of the “0” by bonding or the like.

According to the fourth embodiment, in the event of a side collision, the garnish 56 near the rail fixing bolt 70 is used.
9, when a load is applied in the direction A shown in FIG. 9, the load is transmitted to the slide plate 62 via the garnish 56, and the resin cap 80 is displaced within the displacement allowable interval 74 between the center pillar 50 and the slide plate 62. That is, the energy is absorbed by displacing between the head of the rail fixing bolt 70 and the slide plate 62.

In the fourth embodiment, a similar effect can be obtained by using a urethane cap instead of the resin cap.

3 and 9, the lower end of the rail 64,
That is, although the operation at the uppermost position of the slider 60 is shown, the same operation can be obtained at the upper end of the rail 64, that is, at the lowermost position of the slider 60.

It is to be noted that the present invention can be combined with the previously applied one that absorbs energy at the slide portion of the seat belt anchor. In this way, energy can be more preferably absorbed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a first embodiment of a vehicle seatbelt device according to the present invention, cut along a substantially vertical plane.

FIG. 2 is a cross-sectional view showing a detailed shape of a resin rib as an energy absorbing means, taken along a line II-II in FIG.

FIG. 3 is a cross-sectional view showing the operation of the vehicle seat belt device shown in FIG.

FIG. 4 is a sectional view taken along a substantially horizontal plane of a second embodiment of the vehicle seatbelt device according to the present invention, showing a detailed shape of a box-shaped resin rib as an energy absorbing means.

FIG. 5 is a perspective view showing a detailed shape of a box-shaped resin rib.

FIG. 6 is a sectional view taken along a substantially horizontal plane of a third embodiment of the automotive seatbelt device according to the present invention, showing a detailed shape of a urethane material as an energy absorbing material.

FIG. 7 is a perspective view showing a detailed shape of a urethane material.

FIG. 8 is a sectional view of a fourth embodiment of the vehicle seatbelt device according to the present invention, cut along a substantially vertical plane.

9 is a cross-sectional view illustrating the operation of the automotive seatbelt device shown in FIG.

FIG. 10 is a cross-sectional view cut along a substantial vertical plane, showing an example of the technology applied for earlier.

FIG. 11 is a sectional view showing the operation of the one shown in FIG.

[Explanation of symbols]

 50, 150 Center pillar 52, 252 Seat belt unforce 56 Garnish (interior material) 60, 260 Slider 62 Slide plate 64 Rail 70 Rail fixing bolt 72 Resin rib (energy absorbing means) 74, 274 Displacement allowable interval 76 Box-shaped resin rib (Energy absorbing means) 78 Urethane material (Energy absorbing means) 80 Resin cap (Energy absorbing means)

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60R 22/12-22/48

Claims (3)

(57) [Claims] 1. A rail fixed to a center pillar of an automobile, a slider moving along the rail and capable of adjusting a position in a vertical direction, and a displacement for absorbing energy into a vehicle interior of the center pillar. A seat belt device for an automobile, comprising: a seat belt anchor having a slide plate that is located at an interval that allows the slider to move together with the slider, wherein: a bolt that fixes the rail to the center pillar; Means disposed between the head of the bolt and the slide plate for absorbing energy by displacing when a large load such as an impact load is applied from the interior of the vehicle. Is a vehicle seatbelt device arranged to cover the head of the bolt in the vehicle interior irrespective of the position of the slide plate. 2. The vehicle seat belt device according to claim 1, wherein the energy absorbing means is attached to the slide plate and moves near a head of the bolt. 3. The vehicle seat belt device according to claim 1, wherein said energy absorbing means is attached to a head of said bolt.