JPH07172265A - Seat belt device for automobile - Google Patents

Abstract

PURPOSE:To secure the safety of occupants when a large load such an impact load is applied. CONSTITUTION:An automobile seat belt device includes a seat belt anchor 32 disposed on the center pillar 30 of an automobile and comprising a plurality of parts and a seat belt 34 slidably supported on the seat belt anchor 32. A rail 46, one of the parts of the seat belt anchor 32, is attached by bolts 52 and nuts 54 to the center pillar 30 with a displacement permitting interval 38 between them, and energy-absorbing parts 56 are disposed within the displacement permitting interval 38.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art A reinforcing panel for a seat belt is arranged inside a center pillar composed of an outer panel and an inner panel, and a part of the reinforcing panel for the outer panel joined to the inner side of the outer panel is spaced from the outer panel. A pillar structure for a vehicle body has been proposed which is formed as an abutment surface, and the abutment surface is joined to a reinforcing panel for a seat belt, and a seat belt supporting member is attached to the joining portion to form an anchor portion (Japanese Patent Laid-Open No. Hei 10 (1999) -242242). 2-237873 publication). According to this pillar structure, it is possible to reduce the amount of protrusion of the anchor portion of the seat belt into the vehicle compartment.

[0003]

The center pillar is formed to have high rigidity because it is necessary to secure the strength to withstand the load acting on the vehicle body, and the anchor portion of the seat belt provided on the center pillar also has great rigidity. Therefore, when a load larger than a load applied during normal traveling, for example, an impact load in a collision is applied to the vehicle body, the head of the occupant may damage the head if the head hits the anchor portion. As described above, it is difficult to reduce the impact load only by reducing the protrusion amount of the anchor portion into the vehicle compartment.

An object of the present invention is to provide a vehicle seat belt device which can ensure the safety of passengers when a large load such as an impact load is applied.

[0005]

DISCLOSURE OF THE INVENTION The present invention is for a vehicle provided with a seat belt anchor composed of a plurality of parts and a seat belt slidably supported by the seat belt anchor, the seat belt anchor being arranged in a center pillar of the vehicle. A seatbelt device, wherein means for mounting one of a plurality of parts of the seatbelt anchor to the center pillar, and the part or the mounting means mounted by the mounting means is displaced to the outside of the vehicle interior. For absorbing energy, the component mounted by the mounting means or the mounting means deforms and absorbs energy within the displacement permissible interval.

[0006] In one preferred embodiment, the component mounted by the mounting means or the mounting means has a rigidity lower than the rigidity with respect to a load directed inward of the passenger compartment and a rigidity lower than the rigidity with respect to a load directed outward of the passenger compartment. Have and.

In another preferred mode, a plurality of the displacement allowance intervals are provided, and energy is absorbed at a plurality of places.

In still another preferred embodiment, a plurality of parts of the seatbelt anchor support an anchor plate for supporting the seatbelt, a slider for mounting the anchor plate, and a height-adjustable support for the slider. A rail attached to the center pillar is included, and the height of the seatbelt anchor is adjustable.

When the seatbelt anchor is height-adjustable, in a preferred mode, the displacement allowance space is formed between the rail and the center pillar, and the attachment means has an energy arranged within the displacement allowance space. Including absorbing parts.

If the seatbelt anchor is height-adjustable and the mounting means includes an energy absorbing component arranged within the displacement tolerance interval, in a preferred embodiment, the energy absorbing component is cylindrical and has an axial direction. It has staggered notches on both ends.

When the seatbelt anchor is height-adjustable, in another preferred aspect, the displacement allowance interval is formed between the rail and the center pillar, and the attaching means is opened in the center pillar. At least 1
Rail and one end of the rail that is inseparably inserted into the hole so as not to be separable by a load directed inward of the vehicle interior and separably by a load directed outward of the vehicle interior. Energy is absorbed by the separation of one end and the deformation of the rail.

When the height of the seat belt anchor is adjustable, in yet another preferred aspect, the displacement allowance space is formed between the rail and the setan pillar, and the attaching means is provided on at least one of the rails. The long hole provided at the end so that the longer axis extends in the vertical direction, and the long hole so that the one end of the rail can slide by the load directed to the outside of the vehicle compartment. Consisting of a bolt that penetrates and can be screwed into the center pillar,
Energy is absorbed by sliding of the one end of the rail and deformation of the rail.

When the seatbelt anchor is height-adjustable, in yet another preferred aspect, the displacement allowance interval is formed between the rail and the center pillar, and the rail is embedded in the center pillar. Also, the slider is attached to the center pillar at two places, an upper end and a lower end, and the slider is inseparable by a load directed inward of the vehicle interior and a load directed outward of the vehicle interior. Energy is absorbed by detachably movably attached to the center pillar, and by the separation of the slider, deformation of the rail due to contact of the separated slider with the center pillar.

In yet another preferred embodiment, the vehicle further comprises a garnish disposed inside the center pillar and capable of absorbing energy, the garnish being one of a plurality of parts of the seatbelt anchor. It is deformed by the anchor plate, which absorbs energy.

If the seatbelt anchor is height-adjustable, in a further preferred embodiment the vehicle is further modified by the anchor plate, which is arranged inside the center pillar and is capable of absorbing energy. The rail has a pair of restraining portions that are embedded in the center pillar and taper from the inside to the outside in a portion that is outside the vehicle compartment, and the displacement An allowable space is formed between the slider and the restraint portion of the rail, and the slider is deformable by the restraint portion of the rail.

If the seatbelt anchor is height adjustable and the rail has a restraint, in a preferred embodiment,
A plurality of parts of the seatbelt anchor are further provided with a bolt for attaching the anchor plate to the slider, and between the center pillar and the anchor plate so as to surround the bolt, and can be deformed by the center pillar. And a plate, which is a plate, and another displacement allowance space is formed between the plate and the center pillar.

In still another preferred embodiment, the center pillar has a pillar inner panel and a pillar outer panel arranged outside the pillar inner panel, and the mounting means has a peripheral portion of the pillar inner panel. A deformable plate fixed to the outer side surface and fixed to a bolt that is one of a plurality of parts of the seatbelt anchor at the central portion, and the displacement allowable interval is between the plate and the pillar outer panel. Formed in between.

In still another preferred embodiment, the center pillar has a pillar inner panel and a pillar outer panel arranged outside the pillar inner panel, and the plurality of parts of the seat belt anchor are axially arranged. A bolt having a plurality of projections at intervals on its outer peripheral surface, and a nut fixed to the pillar inner panel and screwing the bolt, and the displacement allowable interval is formed between the nut and the pillar outer panel. Then, the protrusion of the bolt pushes and deforms the hole of the pillar inner panel through which the bolt penetrates to absorb energy.

In still another preferred embodiment, the center pillar has a pillar inner panel and a pillar outer panel arranged outside the pillar inner panel, and the mounting means is provided on the pillar inner panel. A support part and an anchor plate, which is one of a plurality of parts of the seat belt anchor, are attached, and a pin having a tapered surface at a portion facing the pillar inner panel, which is supported by the support part, and a tapered surface of the pin Has a hole provided in the pillar inner panel that can enter,
The displacement allowance interval is formed between the pillar inner panel and the pillar outer panel, and the tapered surface of the pin enters the hole to deform the peripheral portion of the hole and absorb energy.

In still another preferred embodiment, the plurality of parts of the seat belt anchor include an anchor plate for supporting the seat belt, a bolt for mounting the anchor plate, and a nut screwed into the bolt.
The attachment means has a plurality of wires that are stretched around the nut and fixed to the center pillar.

[0021]

[Operation and effect] When a load larger than that applied during normal traveling is applied to the automobile and the head of the occupant and other parts hit the seatbelt device, the parts of the seatbelt anchor attached by the attaching means or the attaching means are attached. It deforms within the displacement allowable interval and absorbs the energy applied to the occupant.

Since the parts of the seatbelt anchor attached by the attaching means or the attaching means are deformed within the displacement allowable interval to positively absorb the energy, the impact on the occupant can be alleviated.

The present invention can be applied to both a seatbelt anchor fixedly provided on the center pillar and a height adjustable one.

If the component of the seat belt anchor attached by the attaching means or the attaching means has a rigidity with respect to a load directed inward of the vehicle interior and a rigidity lower than the rigidity with respect to a load directed outward of the vehicle interior, The original function of the seat belt device, which prevents the occupant from moving in the direction in which the seat belt is pulled, can be achieved by the rigidity with respect to the load directed in the direction. Furthermore, energy can be absorbed more quickly due to the low rigidity to the outside, and the impact on the occupant can be reduced.

When a plurality of allowable displacement intervals are provided and energy is absorbed at a plurality of locations, the energy can be effectively absorbed in a small space.

When the height of the seatbelt anchor is adjustable, since the rail and the slider are provided as a structure peculiar to this type, the rail or the slider is kept in a state where the projection length of the seatbelt device into the vehicle compartment is suppressed to a small value. Displacement allowance intervals can be provided in relation to.

When the height of the seat belt anchor is adjustable and the energy absorbing component is arranged within the allowable displacement interval between the rail and the center pillar, the conventional seat belt device can be modified by a slight modification. The seat belt device of the invention can be modified. In addition, the amount of energy to be absorbed can be arbitrarily determined by selecting the energy absorbing component.

When the energy absorbing component is cylindrical and has zigzag notches at both ends in the axial direction, the compression amount of the energy absorbing component, so-called stroke, and load exhibit non-linear characteristics. Since the load becomes almost constant when the stroke is over a certain stroke, it becomes easy to tune the energy to be absorbed.

If the seatbelt anchor is height-adjustable and the mounting means is at least one hole of the center pillar and one end of the rail inserted into this hole, energy can be absorbed with a simple structure, and it is different. It is possible to standardize between vehicle types. Also, no special parts for energy absorption are required.

If the seatbelt anchor is height-adjustable and the mounting means is a long hole provided at at least one end of the rail and a bolt penetrating the long hole and screwed into the center pillar, it is easy. Energy can be absorbed with a simple structure, and no special component for energy absorption is required.

The height of the seatbelt anchor is adjustable, the rail is embedded in the center pillar, and the rail is attached to the center pillar at two places, the upper end and the lower end, and the slider is provided inside the vehicle interior. When the rail is embedded in the center pillar so that it cannot be separated by the load directed toward it and is movably mounted on the center pillar so that it can be separated by the load directed toward the outside of the vehicle interior, That is, energy can be absorbed by effectively utilizing the space provided in the center pillar. Further, since the slider cannot be separated by the load directed inward of the passenger compartment, sufficient strength can be ensured against the tensile force applied to the seat belt, and it can be separated by the load directed outward of the passenger compartment. In addition, since the rail is deformed, the amount of energy to be absorbed can be adjusted by selecting the strength of the connecting portion between the slider and the center pillar and / or the rigidity of the rail.

When the automobile is provided with the garnish arranged inside the center pillar, the deformation of the garnish itself can be effectively used to absorb the energy.

The vehicle is provided with a garnish arranged inside the center pillar, the height of the seat belt anchor is adjustable, and the rail is embedded in the center pillar and a pair of restraints is provided at a portion outside the vehicle compartment. When the slider is deformable by the restraint portion, the limited space can be effectively used to absorb energy. In addition, energy can be efficiently absorbed by the garnish and the slider.

The vehicle is provided with a garnish arranged inside the center pillar, the height of the seat belt anchor is adjustable, and the rail is embedded in the center pillar and a pair of restraints are provided at a portion outside the passenger compartment. In order to absorb energy by the deformation of the garnish, slider and plate, when the slider has a part, the slider can be deformed by the restraint part, and the plate surrounding the bolt that attaches the anchor plate to the slider can be deformed by the center pillar. Energy can be absorbed very efficiently in a limited space.

When the attaching means has a deformable plate fixed to the bolt of the seat belt anchor at the central portion on the outer surface of the pillar inner panel at the peripheral portion, the tensile load applied to the seat belt is applied to the pillar inner panel and the plate. Since it is received by and, sufficient strength can be secured. On the other hand, the plate deforms due to the load directed to the outside of the vehicle compartment and absorbs energy. Therefore, the amount of energy to be absorbed can be adjusted by selecting the thickness of the plate.

When the seatbelt anchor is provided with a bolt having a plurality of projections spaced in the axial direction on the outer peripheral surface, the energy can be absorbed only by changing the shape of the bolt.

When the mounting means is composed of a support portion provided on the pillar inner panel, a pin supported by the support portion, and a hole provided in the pillar inner panel, it is only necessary to change the shape of the hole of the pillar inner panel. , The energy absorption characteristics can be changed.

When the nut for screwing the bolt of the seat belt anchor is supported by the stretched wire, energy can be absorbed by the elasticity of the wire. As the load increases further, the nut disengages from the wire and absorbs energy.

[0039]

EXAMPLE A vehicle seat belt device according to the present invention comprises:
As shown in FIG. 1, a seatbelt anchor 32 composed of a plurality of parts and a seatbelt 34 slidably supported by the seatbelt anchor 32 are arranged in a center pillar 30 having a structure known per se of an automobile. A means 36 for mounting one of a plurality of parts of the seatbelt anchor 32 on the center pillar 30, and a part or a mounting means 3 mounted by the mounting means 36.
6 includes a gap 38 for absorbing energy that allows the member 6 to be displaced to the outside of the passenger compartment, and the component mounted by the mounting means 36 or the mounting means 36 is deformed within the displacement allowance space 38 to absorb the energy. To do.

In the embodiment shown in FIG. 1, the seatbelt anchor 32 includes an anchor plate 40 which penetrates and supports the seatbelt 34, a bolt 42 for fixing the anchor plate 40, and a nut into which the bolt 42 is screwed. A slider 44 (not shown) and a rail 46 that movably supports the slider 44 are included. A resin cap 48 is attached to the anchor plate 40, and the rail 46 is covered with a cover plate 50 fixed to the slider 44. Detailed structures of the slider 44 and the rail 46 will be described later.

The mounting means 36 includes a bolt 52, a nut 54 welded to the center pillar 30, and a coil spring 56.
And mounting means 3 which are arranged at intervals in the vertical direction.
Attached to the center pillar 30 by 6 is a rail 46. On the other hand, the displacement allowance space 38 is formed between the center pillar 30 and the rail 46. The coil spring 56 is arranged in the displacement allowance space 38, functions as a spacer for pushing the rail 46 inward of the vehicle compartment, and absorbs energy due to a load applied to the seat belt anchor 32.

Instead of the coil spring 56, as shown in FIG. 2, a bellows spacer 58 or a leaf spring 60 may be arranged within the displacement allowable interval 38. The coil spring 56, the bellows spacer 58, and the leaf spring 60 are made of metal,
It can be formed of resin. When these parts are made of metal, energy is absorbed by their elastic deformation or plastic deformation, while when they are made of resin, they are absorbed by plastic deformation.

In the embodiment shown in FIG. 1, since the nut 54 is a cap nut, the screwing amount of the bolt 36 can be kept constant. As a result, since the distance of the displacement allowable interval 38 becomes constant, the coil spring 56, which is an energy absorbing means, is provided.
Guarantee that a certain amount will be deformed by a certain load. A similar effect can be obtained by making the bolt 36 a stepped bolt.

In the embodiment shown in FIG. 1, the slider 44 is vertically movable along the rail 46 and can be fixed at a predetermined height, and the seat belt anchor 32 is of a height adjustable type. . A displacement allowance space 38 is formed between the rail 46 and the center pillar 30, and the attachment means 36 includes a coil spring 56 which is an energy absorbing component arranged in the displacement allowance space 38.

As shown in FIG. 3, as a result of the side collision of the automobile, the head of the occupant hits the seat belt anchor 32, and the load in the direction A toward the outside of the passenger compartment is applied to the seat belt anchor 32.
, The rail 46 is displaced within the displacement allowance space 38, and the coil spring 56 is deformed. This absorbs the energy due to the load.

The seatbelt anchor component or the attachment means attached by the attachment means has a rigidity with respect to a load directed inward of the vehicle compartment and a rigidity lower than the rigidity with respect to a load directed outward of the vehicle compartment. In other words, while making it difficult to deform due to the load that goes inward of the passenger compartment,
It is installed so that it is easily deformed by the load that goes to the outside of the passenger compartment. For example, in the embodiment of FIG.
Is supported by the bolts 52 of the attachment means 36, so that even if a load in the B direction inwardly of the passenger compartment is applied to the rail 46, the rail 46 is not substantially deformed and has a large rigidity. When a load in the A direction directed to the outside of the chamber is applied, when the load exceeds a predetermined magnitude, the coil spring 56 is deformed, so that the coil spring 56 has rigidity smaller than that of the load in the B direction.

A plurality of displacement allowance intervals can be provided to absorb energy at a plurality of locations. The plurality of displacement allowance intervals and one of the plurality of parts of the mounting means or the seatbelt anchor corresponding to each displacement allowance interval are selected from the above-mentioned or later-described embodiments and selectively combined. Can be obtained by

In the embodiment shown in FIG. 4, the allowable displacement interval 38
Is formed between the rail 46 and the pillar inner panel 62 of the center pillar 60, and the mounting means 64 includes an energy absorbing component 66 disposed within the displacement allowance space 38.
The center pillar 60 includes a pillar-in panel 62, a pillar outer panel 68 that is arranged outwardly from the pillar inner panel 62, and a reinforcing panel 70 that is arranged within the space. Are overlapped and welded to form a closed cross section. On the other hand, the attachment means 64 includes a stepped bolt 72, an energy absorbing component 66, and a nut 74 welded to the outer surface of the pillar inner panel 62.

As shown in FIG. 5a, the energy absorbing component 66 is formed of rubber into a tubular shape, and has staggered notches 67 at both ends in the axial direction. The absorbent component 66 may be formed in a tubular shape without cutouts using resin, but when molded in the illustrated shape using rubber, it exhibits the load characteristic C shown in FIG. 5b.
The form shown is preferred. The load characteristic C is almost linear until the compression force reaches a constant value F ₁ and the stroke, which is the compression amount, reaches a constant value S ₁ , but in the range of the compression force exceeding that, a slight compression force The stroke is rapidly increasing due to the increase. In other words, if the stroke is S ₁ or more, the compression force is almost constant. Therefore, by using this characteristic for energy absorption, almost constant energy can be absorbed.

In the embodiment shown in FIGS. 6 to 8, the seatbelt anchor 72 has an anchor plate 74 for slidably supporting the seatbelt 34, a slider 76 for mounting the anchor plate 74, and a slider 76 for movably supporting. And a rail 78 for The rail 78 is attached to the pillar inner panel 62 of the center pillar.

The permissible displacement 80 is formed between the rail 78 and the reinforcing panel (not shown) of the center pillar. On the other hand, the means 82 for attaching the rail 78 to the pillar inner panel 62 is inseparable due to the hole 84 formed in the pillar inner panel 62 and the load directed inward of the vehicle interior, and faces outward of the vehicle interior. And one end 86 of the rail 78 that is separably inserted into the hole 84 under load. Here, the term "inseparable by an inward load" means that when the seat belt supports an impact load applied by an occupant so as to fulfill its function, the seat belt cannot be separated by the impact load. The same applies to the following examples.

The end portion 86 of the rail 78 is shown in FIGS.
In the embodiment shown in FIG. 7, the crossover portion 87 having a U-shaped cross section is used.
And a hook portion 88 extending from the transition portion 87. On the other hand, in the pillar inner panel 62 to which the rail is attached, a hole 90 for arranging the central portion of the rail 78 is formed below the hole 84. The upper end portion 86 of the rail 78 is inserted into the hole 90 from the inside of the hole 90, and the hooked portion 88 is inserted into the hole 84 from the outside of the hole 84 and is exposed inside the pillar inner panel 62. Thereafter, the lower end portion 89 of the rail 78 is applied to the inner side surface of the pillar inner panel 62, and is attached to the pillar inner panel 62 by the bolt 92.

As a result of attaching the rail 78, when a load directed inward is applied to the rail 78, the transition portion 87 abuts on the outer surface of the pillar inner panel 62, and when a load directed outward is applied to the rail 78, it is hooked. The portion 88 abuts the inner surface of the pillar inner panel 62. Hook part 88
Is located farther than the crossover portion 87 with respect to the slider 76, which is a load input portion, and the rigidity of the hooking portion 88 is smaller than the rigidity of the crossover portion 87.
The vehicle separates from the pillar inner panel 62 when the load in the direction A toward the outside of the vehicle cabin reaches a predetermined magnitude, but does not separate by the load in the direction B toward the inside of the vehicle cabin.

The mounting means 94 shown in FIG. 8a has a hole 98 formed by welding an enclosing member 96 having a U-shaped planar shape to the upper portion of the hole 90 of the pillar inner panel 62, and is slightly bent outward. It consists of the end 99 of the rail 78. When the load directed inward is applied to the rail 78, the end portion 99 abuts on the outer surface of the enclosure member 96, and the load directed outward is applied to the rail 7.
When it is added to the pillar 8, the inner surface of the pillar inner panel 62 is abutted. For the same reason as described above, the end portion 99 is separated from the pillar inner panel 62 when the load toward the outside of the vehicle cabin reaches a predetermined magnitude, and is not separated by the load toward the inside of the vehicle cabin. .

The mounting means 100 of FIG. 8b has a hole 102 formed in the pillar inner panel 62 of the center pillar,
It consists of the end 103 of the rail 78 inserted into the hole 102. The end portion 103 is formed by bending the transition portion 104 into a substantially L shape. When an inwardly directed load is applied to the rail 78, the transition portion 104 abuts on the outer surface of the pillar inner panel 62, and when an outwardly directed load is applied to the rail 78, the outer surface of the end portion 103 is contacted with the pillar inner panel 62. Abut the inner surface of the. When the outward load becomes a predetermined amount, the L-shaped end portion 103 extends and the end portion 1
03 is separated from the pillar inner panel 62.

As shown in FIG. 7, when a load larger than a predetermined size in the direction A toward the outside of the passenger compartment is applied to the rail 78 via the slider 76, the hook portion 8 of the rail end portion 86 is caught.
8 disengages from hole 84 and separates, rail 78 bolts 92
It deforms centering on the end portion 89 fixed by. Energy is absorbed by this separation and deformation.

In the embodiment of FIGS. 6 and 7, the rail 78
Only the upper end 86 of the is associated with the mounting means 82 and the lower end 89 is secured by bolts 92. Alternatively, the lower end 89 is also attached to the attachment means 82.
It can be mounted by a mounting means having a structure similar to.

In the embodiment shown in FIGS. 9 and 10, the seatbelt anchor 112 includes an anchor plate 114 for slidably supporting the seatbelt 34 and the anchor plate 1.
A slider 116 to which the slider 14 is attached and a rail 118 that movably supports the slider 116 are provided.

An allowable displacement distance 120 is formed between the rail 118 and the center pillar 30. Rail 118
Are attached to the center pillar 30 by attaching means 122 and bolts 128. Mounting means 122
Is composed of an elongated hole 124 provided at one end 119 of the rail 118, and a bolt 126 penetrating the elongated hole 124 and screwed into the center pillar 30. The long hole 124 is opened such that the longer axis is in the vertical direction. On the other hand, the bolt 126 is screwed into the center pillar 30 so that the end portion 119 of the rail 118 can be slid by the load directed to the outside of the vehicle compartment. That is, as a result of screwing in the bolt 126, friction is generated between the flange 127 of the bolt and the inner surface of the rail 118, and further between the outer surface of the rail 118 and the inner surface of the center pillar 30. The amount of screwing of the bolt 126 is set so that the load cannot be countered with a load of a predetermined value or more.

When a load greater than a predetermined amount in the direction A toward the outside of the passenger compartment is applied to the seat belt anchor 112, the load is transmitted to the rail 118 via the slider 116, and the end 119 of the rail is screwed into the bolt 126. It slides against the frictional force caused by. The rail 118 also has a displacement allowance of 1
Deforms at 20. Energy is absorbed by the sliding and deformation of the rail 118.

In the embodiment shown in FIGS. 11 and 12, the seatbelt anchor 132 is embedded in the anchor plate 134 for supporting the seatbelt 34, the bolt 136 for mounting the anchor plate 134, and the center pillar 138, and the center pillar 138. Rail 140 welded to 138
And the center pillar 1 that can be moved along the rail 140
38 and a nut 144 fixed to the slider 142 into which the bolt 136 is screwed.

In the embodiment shown in FIGS. 1, 4, 6, and 10, the center pillar 30 is provided with a recess or hole, and the rails 46, 78, 118 are exposed to the recess or hole.
11 and 12, the rail 140 is arranged outside the center pillar 138 so that the rail 140 forms a recess with respect to the center pillar 138. The rail 140 is formed to have a U-shaped vertical cross section, and is welded to the center pillar 138 at the upper end and the lower end thereof.

A hole 139 extending vertically is formed in the center pillar 138, and the nut 1 is inserted in the center pillar 138.
44 is welded to the slider 142 and the nut 144 is arranged.
Project inwardly through hole 139. The width of the slider 142, that is, the distance in the direction perpendicular to the paper surface is larger than the width of the hole 139 of the center pillar 138. On the other hand, the two end portions 147 having a width smaller than the width of the hole 139 of the center pillar 138.
And the intermediate portion 148 of the plate 146 having the intermediate portion 148 having a width larger than the width of the hole 139 is applied to the inner surface of the center pillar 138, and the screw 150 penetrating the two end portions 147.
The plate 146 and the slider 142 are fixed by. The spacer 151 is applied to the nut 144, and the bolt 136 is passed through the spacer 151 and screwed into the nut 144.

As a result of the mounting as described above, the allowable displacement interval 152 is formed between the rail 140 and the slider 142, and the slider 142 is inseparable due to the load directed inwardly of the vehicle interior and the vehicle interior. Is attached to the center pillar 138 so as to be separable by a predetermined load or more directed outward, and is movable with respect to the center pillar 138.

The lever 154 is operated by a knob (not shown) known per se to pull out the lock pin 156,
Move the slider 142 along the rail 140 to the appropriate position. Then, when the knob is released, the lock pin 156 fits into the hole 158 of the rail 140, and the slider 142 is fixed and put in a used state. In this state of use, the bolt 136 of the seatbelt anchor 132 faces the outside of the passenger compartment A
When a load larger than a predetermined value in the direction is applied, the plate 146 is deformed,
As shown in FIG. 12, the slider 142 has the center pillar 1
Separate from 38. By this separation, the rails 14 due to the contact of the separated sliders 142 with the rails 140 are separated.
Energy is absorbed by the deformation of 0.

In the embodiment shown in FIG. 13, the automobile has a garnish 162 arranged inside the center pillar 160. The garnish 162 is made of an elastic material such as foamed urethane and has an energy absorbing capacity. The center pillar 160 is the pillar inner panel 16
4, the pillar outer panel 166, and the reinforcing panel 168.
And a mounting panel 170 protruding inward from the pillar inner panel 164. The garnish 162 is attached to the mounting panel 170 by gluing or by clip pins known per se. On the other hand, the seatbelt anchor 172 includes an anchor plate 174, a bolt 176 for mounting the anchor plate 174, a rail 178 arranged between the pillar inner panel 164 and the reinforcing panel 168 of the center pillar 160, and a rail 1
78, and a slider 180 movably arranged in the same.

The nut 182 is welded to the slider 180 and protruded inward from the rail 178, and the bolt 176 is screwed into the nut 182 to attach the anchor plate 174 to the slider 180. When a load in the direction A toward the outside of the passenger compartment is applied to the seat belt anchor 172, the cap 184 of the anchor plate 174 hits the garnish 162 and deforms the garnish 162, thereby absorbing energy.

In the embodiment shown in FIG. 13, the rail 178 is used.
Is embedded in the center pillar 160, and has a pair of restraining portions 179 that are tapered from the inside to the outside in a portion that is outside the vehicle interior. And the allowable displacement interval 1
86 is formed between the slider 180 and the rail restraining portion 179. The slider 186 is the restraint portion 1 of the rail.
It can be modified by 79. Therefore, according to this embodiment, when a load in the direction A is applied to the seat belt anchor 172, the garnish 162 moves the anchor plate 174.
The slider 180 is deformed by the rail 17
8 is deformed by the restraint portion 179, and each deformation absorbs energy.

Further, in the embodiment shown in FIG. 13, the seat belt anchor 172 is provided with the bolt 1 between the mounting panel 170 of the center pillar 160 and the anchor plate 174.
A plate 188 is provided so as to surround 76. An allowable displacement interval 190 is formed between the plate 188 and the center pillar mounting panel 170, and the plate 188 is mounted on the mounting panel 1.
It is deformable by 70. Therefore, according to this so-called multiple energy absorption structure, when a load in the direction A toward the outside of the vehicle is applied to the seat belt anchor 172,
The garnish 162 is deformed by the anchor plate 174, the plate 188 is deformed by the mounting plate 170, and further, the slider 180 is formed by the pair of restraining portions 1 of the rail.
It is deformed by 79, and each deformation absorbs energy.

In the embodiment shown in FIGS. 15 to 17, the center pillar 192 has a pillar inner panel 194 and a pillar outer panel 196 arranged outside the pillar inner panel 194. On the other hand, the seat belt anchor 202 includes an anchor plate 204 that slidably supports the seat belt 34, a bolt 206 that attaches the anchor plate 204, and a nut 20 that screws the bolt 206.
8 and.

A spacer 212 is applied to a deformable plate 210 having a nut 208 welded to the central portion thereof, a bolt 206 is passed through the spacer 212 and screwed into the nut 208, and the bolt 206 is attached to the central portion of the plate 210. The plate 210 is welded to the outer surface of the pillar inner panel 194 at its peripheral edge. As a result, the displacement allowance interval 214 is reduced to the plate 210.
And the pillar outer panel 196.
The pillar inner panel 194 is covered with a garnish 216.

When a load in the direction A toward the outside of the passenger compartment is applied to the seat belt anchor 202, the bolt 206 is displaced,
Along with this, the plate 210 is deformed outward as shown in FIG. 17, and this deformation absorbs energy.
Further, when the load is increased, the welded portion 216 of the plate 210 is
Breaks and absorbs energy.

In the embodiment shown in FIGS. 18 and 19, the center pillar 220 includes a pillar inner panel 222, a pillar outer panel 224 disposed outside the pillar inner panel 222, and a pillar inner panel 222. The reinforcing panel 226 is welded to the outer surface. On the other hand, the seat belt anchor 232 includes an anchor plate 234 that slidably supports the seat belt 34, a bolt 236 that attaches the anchor plate 234, and a nut 238 welded to the outer surface of the reinforcing panel 226.

The bolt 236 has a plurality of, in the illustrated embodiment, two protrusions 237 spaced in the axial direction thereof. The outer diameter of the protrusion 237 is larger than the diameter of the bolt hole 227 of the reinforcing panel 226. In the illustrated embodiment, the protrusion 237 extends over the entire circumference in the circumferential direction, and is tapered outward. In addition, a plurality of cylindrical or spherical raised portions having a small outer diameter may be irregularly arranged to form protrusions. On the other hand, the welding strength of the nut 238 is determined so that the nut 238 will be broken by a predetermined amount of load in the A direction facing the outside of the vehicle compartment. When the bolt 236 is screwed into the nut 238 and attached to the center pillar 220, a displacement allowable interval 240 is formed between the nut 238 and the pillar outer panel 224.

When the seat belt anchor 232 receives a load larger than a predetermined value in the direction A toward the outside of the passenger compartment, the nut 238
Of the bolt 236, the projection 237 of the bolt 236 spreads and deforms the hole 227 of the reinforcing panel 226 to deform the bolt 2.
36 is displaced outward. Energy is absorbed by the breakage of the nut weld and the deformation of the hole of the reinforcing panel. When there is no reinforcing panel, the nut 238 is welded to the pillar inner panel 222, and the protrusion 237 of the bolt 236 deforms the hole of the pillar inner panel 222.

In the embodiment shown in FIG. 20, the center pillar 2
The reference numeral 50 includes a pillar inner panel 252 and a pillar outer panel 254 which is spaced outward from the pillar inner panel 252. Meanwhile, the seat belt anchor 262
Has an anchor plate 264 that slidably supports the seat belt 34, and a bolt 266 that attaches the anchor plate 264.

Further, there is provided a means 270 for attaching the anchor plate 264 to the pillar inner panel 252 of the center pillar 250, which comprises a support portion 272, a pin 273 and a hole 274. A bolt 266 penetrating the anchor plate 264 is screwed into the pin 273 and attached. The pin 273 has a truncated cone shape and has a tapered surface 275 that is tapered outward. This pin 27
3 is attached to the pillar inner panel 252 by the support portion 272, and the tapered surface 275 is the pillar inner panel 2
It is possible to enter the hole 274 of 52. A displacement allowable space 278 is formed between the pillar inner panel 252 and the pillar outer panel 254.

When a load in the direction A toward the outside of the passenger compartment is applied to the seat belt anchor 262, as shown in FIG. 20c,
The tapered surface 275 of the pin 273 is the pillar inner panel 25.
2 into the hole 274 to deform the periphery of the hole 274,
Absorbs energy. In this case, as shown in FIG. 20d, it is preferable that a plurality of radial slits 276 be provided in the hole 274 of the pillar inner panel 252 to surely deform the peripheral portion of the hole 274.

In the embodiment shown in FIG. 22, the center pillar 2
90 is a pillar outer panel 292 and a reinforcing panel 29.
4, the seatbelt anchor 302 has no inner panel at its mounting portion, and the garnish 296 covers the center pillar 290. On the other hand, the seat belt anchor 302 is an anchor plate 304 that supports the seat belt.
And a bolt 306 for attaching the anchor plate 304
And a nut 308 into which the bolt 306 is screwed.

Further, the nut 308 is attached to the center pillar 29.
A plurality of wires 310 are provided as a means for attaching to 0. The wire 310 is stretched over the nut 308,
It is fixed to the center pillar 290. The wire 310 and the nut 308 have a substantially U-shaped fitting 31
Of the wire 2, the nut 308 and the fitting 312 are welded at a portion 313 outside the wire 310, and the wire 31
The parts inward of 0 are not welded or are slightly welded. As a result, the allowable displacement interval 3
14 is formed between the nut 308 and the reinforcing panel 294.

When the load in the direction B toward the inside of the passenger compartment, that is, the load for achieving the original function of the seat belt device, is received, the welded portion 3 between the nut 308 and the fitting 312 is received.
13 prevents the wire 310 from coming off,
The directional load is received by the elasticity of the wire 310.
On the other hand, when a load in the direction A toward the outside of the passenger compartment is applied, the wire 310 first expands to absorb energy, and with a larger load, the wire 310 disengages from the portion 314, thereby absorbing energy. .

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an embodiment of an automobile seat belt device according to the present invention taken along a substantially vertical plane.

2 is a cross-sectional view showing an energy absorbing component that can be arranged between a center pillar and a rail of the seat belt device for an automobile shown in FIG. 1, and a and b are different absorbing components.

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

FIG. 4 is a sectional view of another embodiment of the seat belt device for an automobile according to the present invention, taken along a substantially horizontal plane.

5 shows the energy absorbing component shown in FIG. 4,
a is a perspective view and b is a characteristic view.

FIG. 6 is a perspective view of yet another embodiment of the vehicle seat belt device according to the present invention, in which some of the components are disassembled and shown.

7 is a sectional view taken along line 7-7 of FIG.
Indicates a state before energy absorption, and b indicates a state after energy absorption.

FIG. 8 shows another structure of the center pillar and the rail of the seat belt device of the automobile shown in FIG. 6, and a and b show different embodiments.

FIG. 9 is a sectional view taken along a substantially vertical plane of a further embodiment of the seat belt device for an automobile according to the present invention.

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

FIG. 11 is a sectional view taken along a substantially vertical plane of yet another embodiment of the seat belt device for an automobile according to the present invention.

12 is a cross-sectional view showing the operation of the seat belt device for an automobile shown in FIG.

FIG. 13 is a sectional view of yet another embodiment of the vehicle seat belt device according to the present invention, taken along a substantially horizontal plane;
The anchor plate is shown rotated by approximately 90 ° for convenience of description.

14 is a cross-sectional view showing the operation of the seat belt device for an automobile shown in FIG.

FIG. 15 is a perspective view of yet another embodiment of the seat belt device for an automobile according to the present invention.

16 is a sectional view taken along line 16-16 of FIG.

FIG. 17 is a cross-sectional view showing the operation of the vehicle seat belt device shown in FIG. 16.

FIG. 18 is a cross-sectional view of another embodiment of the seat belt device for an automobile according to the present invention taken along a substantially vertical plane.

19 is a cross-sectional view showing the operation of the seat belt device for an automobile shown in FIG.

FIG. 20 shows still another embodiment of the vehicle seat belt device according to the present invention, in which a is a perspective view, b is a sectional view taken along the line bb of FIG. A, and c is a sectional view showing the action. Figure, d
[Fig. 3] is a perspective view of a center pillar.

FIG. 21 shows still another embodiment of the vehicle seat belt device according to the present invention, in which a is a front view, b is a sectional view taken along line bb in FIG. A, and c is a nut and a wire. It is a sectional view similar to b which expands and shows the coupling part of.

[Explanation of symbols]

30, 60, 138, 160, 192, 220 Center pillar 250, 290 Center pillar 32, 72, 112, 132, 172, 202, 232
Seat belt anchors 262, 302 Seat belt anchors 34 Seat belts 36, 64, 82, 94, 100, 122 Attachment means 38, 80, 120, 152, 186, 214, 240
Displacement allowance interval 278, 314 Displacement allowance interval 40, 74, 114, 134, 174, 204 Anchor plate 234, 264, 304 Anchor plate 42, 52, 72, 136, 176, 206, 236,
266 bolts 44, 76, 116, 142, 180 sliders 46, 78, 118, 140, 178 rails 56, 58, 60, 66 energy absorbing parts

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toru Ito 1 Toyota-cho, Toyota City, Aichi Prefecture, Toyota Motor Co., Ltd. (72) Inventor Taeken Suesawa 1-cho, Toyota City, Aichi Prefecture, Toyota Motor Co., Ltd. (72) Inventor Shuji Yamada 1 Toyota-cho, Toyota-shi, Aichi Toyota Motor Co., Ltd.

Claims (16)

[Claims] 1. A seatbelt device for an automobile, comprising a seatbelt anchor, which is arranged in a center pillar of an automobile, and which is composed of a plurality of parts, and a seatbelt slidably supported by the seatbelt anchor. A means for attaching one of a plurality of parts of a seatbelt anchor to the center pillar, and energy absorption allowing the part or the attachment means attached by the attachment means to be displaced outside the passenger compartment Including the interval and
A seatbelt device for an automobile, wherein the component mounted by the mounting means or the mounting means deforms within the displacement allowable interval to absorb energy. 2. The component mounted by the mounting means or the mounting means has a rigidity with respect to a load directed inward of the vehicle interior and a rigidity lower than the rigidity with respect to a load directed outward of the vehicle interior. The vehicle seat belt device according to claim 1. 3. The seatbelt device for an automobile according to claim 1, wherein a plurality of allowable displacement intervals are provided, and energy is absorbed at a plurality of locations. 4. An anchor plate for supporting the seat belt, a slider for mounting the anchor plate, a slider for supporting the slider so that the height thereof can be adjusted, and the slider for mounting to the center pillar. And an adjustable rail, and the height of the seatbelt anchor is adjustable. 5. The automobile according to claim 4, wherein the displacement allowance space is formed between the rail and the center pillar, and the mounting means includes an energy absorbing component arranged within the displacement allowance space. Seat belt device. 6. The energy absorbing component has a tubular shape,
The vehicle seat belt device according to claim 5, wherein the seat belt device has staggered notches at both ends in the axial direction. 7. The displacement allowance space is formed between the rail and the center pillar, and the attachment means is formed by at least one hole formed in the center pillar and a load directed inward of a vehicle compartment. It is composed of one end of the rail that is non-separable and is separably inserted into the hole by a load directed to the outside of the passenger compartment, and the end of the rail is separated and the rail is deformed. The vehicle seat belt device according to claim 4, which absorbs energy. 8. The permissible displacement interval is formed between the rail and the setan pillar, and the attaching means is such that a longer axis line provided on at least one end of the rail is a vertical direction. And a bolt that is screwed into the center pillar through the elongated hole so that the one end of the rail can be slid by a load toward the outside of the vehicle compartment. 5. The vehicle seat belt device according to claim 4, wherein energy is absorbed by sliding of the one end of the vehicle and deformation of the rail. 9. The displacement allowable interval is formed between the rail and the center pillar, the rail is embedded in the center pillar, and the center is provided at two points, an upper end and a lower end. Attached to the pillar, the slider is inseparable due to the load directed inward of the passenger compartment,
Further, it is movably attached to the center pillar so as to be separable by a load directed to the outside of the vehicle interior, and the separation of the slider absorbs energy by the deformation of the rail due to the contact of the separated slider with the rail. The vehicle seat belt device according to claim 4. 10. The vehicle further comprises a garnish disposed inside the center pillar and capable of absorbing energy, the garnish being deformed by an anchor plate which is one of a plurality of parts of the seatbelt anchor. The seat belt device for an automobile according to claim 1 or 4, which absorbs energy. 11. The vehicle further comprises a garnish disposed inside the center pillar and capable of absorbing energy, the garnish being deformed by the anchor plate, the rail embedded in the center pillar, A pair of restraint portions tapering from the inside to the outside is provided at a portion that is outside the chamber, and the displacement allowable interval is formed between the slider and the restraint portion of the rail, The vehicle seat belt device according to claim 4, wherein the slider is deformable by the restraint portion of the rail. 12. The plurality of parts of the seatbelt anchor are further arranged so as to surround a bolt for mounting the anchor plate to the slider and the bolt between the center pillar and the anchor plate. Includes a plate that is deformable by the center pillar,
The seat belt device for an automobile according to claim 11, wherein another displacement allowance space is formed between the plate and the center pillar. 13. The center pillar has a pillar inner panel and a pillar outer panel arranged outside the pillar inner panel, and the mounting means is fixed to an outer surface of the pillar inner panel at a peripheral edge portion. And a deformable plate that is fixed to a bolt that is one of a plurality of parts of the seatbelt anchor at a central portion, and the displacement allowable gap is formed between the plate and the pillar outer panel. The vehicle seat belt device according to claim 1. 14. The center pillar has a pillar inner panel and a pillar outer panel arranged outside the pillar inner panel, and a plurality of parts of the seatbelt anchor are axially spaced from each other. A bolt having a plurality of protrusions on the outer peripheral surface and a nut that is fixed to the pillar inner panel and that screws the bolt are included, and the displacement allowable interval is formed between the nut and the pillar outer panel, and the bolt The projection pushes the hole of the pillar inner panel through which the bolt penetrates to deform it,
The vehicle seat belt device according to claim 1, which absorbs energy. 15. The center pillar includes a pillar inner panel and a pillar outer panel arranged outside the pillar inner panel, and the mounting means includes a support portion provided on the pillar inner panel, An anchor plate, which is one of a plurality of parts of a seat belt anchor, is attached, and a pin having a tapered surface at a portion facing the pillar inner panel, which is supported by the supporting portion, and the tapered surface of the pin can enter. A hole provided in the pillar inner panel, the displacement allowable interval is formed between the pillar inner panel and the pillar outer panel, the tapered surface of the pin enters the hole, the peripheral portion of the hole The vehicle seat belt device according to claim 1, wherein the vehicle seat belt device is deformed to absorb energy. 16. A plurality of parts of the seatbelt anchor include an anchor plate for supporting a seatbelt, a bolt for mounting the anchor plate, and a nut screwed into the bolt, and the mounting means includes the The vehicle seat belt device according to claim 1, further comprising a plurality of wires that are stretched around a nut and fixed to the center pillar.