JP2785669B2 - 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 a seat belt device for an automobile, and more particularly to a seat belt anchor which is attached to a center pillar and comprises a plurality of parts, and a seat belt slidably supported by the seat belt anchor. The present invention relates to a seat belt device provided.

[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. A pillar structure of a vehicle body has been proposed in which an abutting surface is formed to connect the abutting surface to a reinforcing panel for a seatbelt, and a seatbelt support member is attached to the connecting portion to form an anchor portion (Japanese Patent Application Laid-Open No. HEI 9-260572). 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.

[0003]

The center pillar is formed to have high rigidity because it is necessary to secure the strength to withstand the load applied to the vehicle body. The anchor portion of the seat belt provided on the center pillar also has high rigidity. Therefore, when a load larger than the load applied during normal traveling, for example, an impact load at the time of a side collision is applied to the vehicle body, if the occupant's head hits the anchor portion, a large impact may be applied to the head. It is difficult to reduce the impact load only by reducing the amount of protrusion of the anchor portion into the vehicle compartment as in the pillar structure.

It is an object of the present invention to apply a large load such as an impact load from the inside of the passenger compartment to the outside of the passenger compartment, and when the occupant's head or other part hits the seat belt anchor, the occupant is exerted on the occupant. Provided is an automobile seat belt device that can reduce a shock that is caused.

[0005]

SUMMARY OF THE INVENTION The present invention is directed to a motor vehicle having a seat belt anchor comprising a plurality of parts and a seat belt slidably supported by the seat belt anchor, which is disposed on a center pillar of the motor vehicle. A seat belt device, comprising: mounting means for mounting one of a plurality of parts of the seat belt anchor to the center pillar;
A displacement allowance interval for absorbing energy that allows the part or the attachment means attached by the attachment means to be displaced out of the cabin by a load directed from the inside of the cabin to the outside of the cabin. . The part or the attachment means attached by the attachment means is deformed toward the outside of the vehicle cabin within the displacement allowable interval to absorb energy.

In one preferred embodiment, the component or the mounting means mounted by the mounting means is deformed when a load directed outward of the vehicle compartment is applied as compared to when a load directed toward the interior of the vehicle compartment is applied. It is formed so as to be easy to perform.

In another preferred embodiment, a plurality of the displacement allowable intervals are provided, and energy is absorbed at a plurality of locations.

In still another preferred aspect, the plurality of parts of the seat belt anchor include an anchor plate for supporting the seat belt, a slider for attaching the anchor plate, and a slider for supporting the slider in a height-adjustable manner. A rail attached to the center pillar, wherein the height of the seat belt anchor is adjustable.

In the case where the height of the seat belt anchor is adjustable, in a preferred embodiment, the displacement allowable interval is formed between the rail and the center pillar, and the mounting means includes an energy disperser disposed within the displacement allowable interval. Includes absorbent components.

When the seat belt anchor is adjustable in height and the mounting means includes an energy absorbing component disposed within a displacement allowable interval, in a preferred embodiment, the energy absorbing component is cylindrical, and has an axial direction. Staggered notches at both ends.

When the height of the seat belt anchor is adjustable, in another preferred embodiment, the displacement allowable interval is formed between the rail and the center pillar, and the mounting means is opened to the center pillar. At least one
And one end of the rail which is inserted into the hole so as to be inseparable by a load directed toward the inside of the vehicle compartment and separable by a load directed toward the outside of the vehicle compartment, and the rail comprises: Energy is absorbed by the separation of one end and deformation of the rail.

In a case where the height of the seat belt anchor is adjustable, in still another preferred embodiment, the displacement allowable interval is formed between the rail and the cetane pillar, and the attaching means includes at least one of the rails. An elongated hole provided at the end, the elongated hole being opened so that the longer axis is in the vertical direction, and the elongated hole so that the one end of the rail can slide by a load directed outward of the vehicle compartment. It consists 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 height of the seat belt anchor is adjustable, in still another preferred embodiment, the displacement allowable interval is formed between the rail and the center pillar, and the rail is embedded in the center pillar. 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 compartment, and is separated by a load directed outward of the vehicle compartment. It is detachably mounted on the center pillar so as to be separable, and absorbs energy by the separation of the slider and the deformation of the rail due to the contact of the separated slider with the center pillar.

[0014] 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 seat belt anchor. , And absorbs energy.

If the seat belt anchor is adjustable in height, in a further preferred embodiment, the motor vehicle is further deformed 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 embedded in the center pillar and tapered from inside to outside at a portion outside the vehicle compartment, An allowance is formed between the slider and the restraint of the rail, the slider being deformable by the restraint of the rail.

When the height of the seat belt anchor is adjustable and the rail has a restraining portion, in a preferred embodiment,
The plurality of parts of the seat belt anchor are further arranged to surround the bolt between the center pillar and the anchor plate, and are deformable by the center pillar. And another allowable displacement interval 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 disposed outside the pillar inner panel, and the attaching means has a peripheral portion of the pillar inner panel. A deformable plate fixed to an outer surface and fixed to a bolt, which is one of a plurality of parts of the seat belt anchor, at a center portion, wherein the displacement allowable interval is set between the plate and the pillar outer panel. Formed between them.

[0018] In still another preferred embodiment, the center pillar has a pillar inner panel and a pillar outer panel disposed outside the pillar inner panel, and a plurality of parts of the seat belt anchor include an axial direction. And a nut fixed to the pillar inner panel and screwing the bolt. The displacement allowable interval is formed between the nut and the pillar outer panel. Then, the protrusion of the bolt pushes and deforms a hole of the pillar inner panel through which the bolt penetrates, thereby absorbing energy.

In still another preferred embodiment, the center pillar has a pillar inner panel and a pillar outer panel disposed outside the pillar inner panel, and the mounting means is provided on the pillar inner panel. A support portion, a pin having an anchor plate, which is one of a plurality of parts of the seat belt anchor, having a tapered surface at a portion facing the pillar inner panel, supported by the support portion, and a tapered surface of the pin Has a hole provided in the pillar inner panel is accessible,
The displacement allowable 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 a peripheral portion of the hole and absorb energy.

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

When a load greater than the load applied during normal running is applied from the inside of the passenger compartment to the outside of the passenger compartment, and the head or other portion of the occupant hits the seat belt device, the seat is attached by the attaching means. The parts of the belt anchor or the attachment means are deformed outwardly of the cabin within the allowable displacement interval to absorb energy.

The parts of the seat belt anchor or the mounting means, which are mounted by the mounting means, are deformed toward the outside of the cabin within the allowable displacement interval to positively absorb energy, so that the cabin is secured from the inside of the cabin. The impact on the occupant due to the outward load can be reduced.

The seat belt anchor can be applied to any of those fixedly provided on the center pillar and those provided so as to be adjustable in height.

The component or the mounting means mounted by the mounting means is formed to be more easily deformed when a load directed outward of the vehicle compartment is applied than when a load directed toward the interior of the passenger compartment is applied. When the load from the occupant toward the interior of the cabin is applied to the seatbelt device, the absorbing means does not deform, so that the occupant is prevented from moving inward of the cabin. The original function can be achieved. Further, energy can be quickly absorbed by a predetermined load or more directed to the outside of the passenger compartment, and the impact applied to the occupant can be reduced.

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

When the height of the seat belt anchor is adjustable, a rail and a slider are provided as a structure unique to this type. , A displacement allowable interval can be provided.

In the case where the height of the seat belt anchor is adjustable and the energy absorbing component is arranged within the allowable displacement distance between the rail and the center pillar, the conventional seat belt device can be modified by making only a slight shape change. It can be modified to the seat belt device of the invention. Further, by selecting an energy absorbing component, the amount of energy to be absorbed can be arbitrarily determined.

When the energy absorbing component is cylindrical and has staggered notches at both ends in the axial direction, the compression amount of the energy absorbing component, so-called stroke and load, exhibit nonlinear characteristics. When the stroke exceeds a certain value, the load becomes substantially constant, so that the energy to be absorbed can be easily tuned.

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

In the case where the seat belt anchor is adjustable in height and the mounting means is a long hole provided at at least one end of the rail and a bolt which passes through the long hole and can be screwed into a center pillar, Energy can be absorbed by a simple structure, and no special parts for energy absorption are required.

The seat belt anchor is adjustable in height, the rail is embedded in the center pillar, and is attached to the center pillar at two positions, an upper end and a lower end, and the slider is provided inside the vehicle compartment. When the rail is embedded in the center pillar so that it is inseparable by the load facing the center and is separable by the load facing the outside of the cabin, the rail is embedded in the center pillar. 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 secured against the pulling force applied to the seat belt, and the slider 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 joint between the slider and the center pillar and / or the rigidity of the rail.

When the automobile has a garnish disposed inside the center pillar, energy can be absorbed by making good use of the deformation of the garnish itself.

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

The vehicle has a garnish arranged inside the center pillar, the seat belt anchor can be adjusted in height, and a pair of restraints are provided at a position where the rail is embedded in the center pillar and is outside the vehicle compartment. Part, the slider can be deformed by the restraining part, and furthermore, if the plate surrounding the bolt for attaching the anchor plate to the slider is deformable by the center pillar, energy can be absorbed by deformation of the garnish, the slider and the plate. 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 center 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. Therefore, sufficient strength can be secured. On the other hand, since the plate is deformed by the load directed to the outside of the vehicle compartment and absorbs energy, the amount of energy to be absorbed can be adjusted by selecting the thickness of the plate.

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

When the mounting means comprises a support provided on the pillar inner panel, a pin supported by the support, and a hole provided on the pillar inner panel, it is only necessary to change the shape of the hole in the pillar inner panel. In addition, 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. When the load further increases, the nut comes off the wire and absorbs energy.

[0039]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
As shown in FIG. 1, a seat belt anchor 32 composed of a plurality of parts and a seat belt 34 slidably supported by the seat belt anchor 32 are arranged on a center pillar 30 having a structure known per se of an automobile. A means 36 for attaching one of the plurality of parts of the seat belt anchor 32 to the center pillar 30; and a part or attachment means 3 attached by the attaching means 36.
And a space 38 for absorbing energy that allows the 6 to be displaced out of the cabin, and the parts or mounting means 36 mounted by the mounting means 36 deform within the allowable displacement distance 38 to absorb energy. I do.

In the embodiment shown in FIG. 1, the seat belt anchor 32 includes an anchor plate 40 for penetrating and supporting the seat belt 34, a bolt 42 for fixing the anchor plate 40, and a nut into which the bolt 42 is screwed. (Not shown) and a rail 46 for movably supporting the slider 44. A resin cap 48 is attached to the anchor plate 40, and the rail 46 is covered by a cover plate 50 fixed to the slider 44. The detailed structure 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 is arranged at intervals above and below
A rail 46 is attached to the center pillar 30 by 6. On the other hand, the displacement allowable interval 38 is formed between the center pillar 30 and the rail 46. The coil spring 56 is disposed within the displacement allowable interval 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, a bellows spacer 58 or a leaf spring 60 may be arranged within the displacement allowable interval 38 as shown in FIG. The coil spring 56, the bellows spacer 58 and the leaf spring 60 are formed of metal,
It can be formed of resin. When these components are metal, they absorb energy by their elastic deformation or plastic deformation, but when they are resin, they absorb energy 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, the distance of the displacement allowable interval 38 becomes constant, so that the coil spring 56 as the energy absorbing means is used.
Etc. are guaranteed to be deformed by a predetermined amount by a predetermined 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 can be moved up and down along the rail 46 and can be fixed at a predetermined height, and the seat belt anchor 32 is of a type whose height can be adjusted. . An allowable displacement space 38 is formed between the rail 46 and the center pillar 30, and the mounting means 36 includes a coil spring 56 which is an energy absorbing component disposed within the allowable displacement 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 allowable interval 38, and the coil spring 56 is deformed. Thereby, the energy due to the load is absorbed.

The part or the attachment means of the seat belt anchor attached by the attachment means has a stiffness against a load inward of the vehicle compartment and a stiffness lower than the rigidity against a load toward the outside of the vehicle compartment. In other words, it is difficult to be deformed by the load inward of the cabin,
It is installed so that it is easily deformed by the load facing the outside of the cabin. For example, in the embodiment of FIG.
Are supported by the bolts 52 of the mounting means 36, and therefore are not substantially deformed even if a load in the direction B directed toward the inside of the cabin is applied to the rail 46, and have high rigidity. When a load in the direction A directed to the outside of the chamber is applied, the coil spring 56 is deformed when the load exceeds a predetermined magnitude, so that the coil spring 56 has a rigidity smaller than the rigidity against the load in the direction B.

A plurality of allowable displacement intervals are provided, and energy can be absorbed at a plurality of locations. The plurality of allowable displacement intervals and one of the plurality of parts of the attachment means or the seat belt anchor corresponding to each of the allowable displacement intervals are selected from the above-described or later-described embodiments, and selectively combined. Can be obtained by:

In the embodiment shown in FIG.
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 allowable interval 38.
The center pillar 60 is composed of a pillar-in panel 62, a pillar outer panel 68 arranged at an interval outward from the pillar inner panel 62, and a reinforcing panel 70 arranged at the interval. Are overlapped and welded to form a closed cross section. On the other hand, the mounting 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 in a cylindrical shape by rubber, and has a staggered notch 67 at both ends in the axial direction. The absorbent component 66 may be formed into a tubular shape with no notch by resin. However, when the absorbent component 66 is formed by rubber into the illustrated shape, the load characteristic C shown in FIG.
The illustrated form is preferred. The load characteristic C is substantially linear until the compression force reaches a constant value F ₁ and the stroke, which is the amount of compression, reaches a constant value S ₁ . The stroke increases sharply due to the increase. In other words, the stroke is equal to S ₁ or more, a substantially constant compressive force. Therefore, almost constant energy can be absorbed by using this characteristic for energy absorption.

In the embodiment shown in FIGS. 6 to 8, the seat belt anchor 72 includes an anchor plate 74 for slidably supporting the seat belt 34, a slider 76 for attaching the anchor plate 74, and a movably supporting slider 76. Rail 78 to be mounted. The rail 78 is attached to the pillar inner panel 62 of the center pillar.

The displacement allowable interval 80 is formed between the rail 78 and a 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 from the hole 84 formed in the pillar inner panel 62 by a load directed inward of the vehicle interior and faces outward of the vehicle interior. And one end 86 of a rail 78 which is separably inserted into the hole 84 by a load. Here, that the seat belt cannot be separated by an inward load means that when the seat belt supports an impact load applied from an occupant in order to fulfill its function, the seat belt is not separated by the impact load. The same applies to the following embodiments.

The end 86 of the rail 78 is shown in FIGS.
In the embodiment shown in FIG.
And a hook portion 88 extending from the crossover portion 87. On the other hand, a hole 90 for arranging the central portion of the rail 78 below the hole 84 is formed in the pillar inner panel 62 for mounting the rail. The upper end 86 of the rail 78 is inserted into the hole 90 from inside the hole 90, and the hooked portion 88 is inserted into the hole 84 from outside the hole 84, and is put out of the pillar inner panel 62. Thereafter, the lower end 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 a bolt 92.

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

The mounting means 94 shown in FIG. 8A has a hole 98 formed by welding an enclosing member 96 having a U-shape in a plan view to a portion above the hole 90 of the pillar inner panel 62, and is slightly bent outward. And an end 99 of the rail 78. The end portion 99 comes into contact with the outer surface of the enclosure 96 when an inward load is applied to the rail 78, and the outward load is applied to the rail 7.
8, it comes into contact with the inner side surface of the pillar inner panel 62. For the same reason as described above, the end portion 99 separates from the pillar inner panel 62 when the load facing the outside of the vehicle compartment reaches a predetermined magnitude, and does not separate due to the load facing the inside of the vehicle compartment. .

The mounting means 100 shown in FIG. 8B includes a hole 102 formed in the pillar inner panel 62 of the center pillar,
And an end 103 of the rail 78 inserted into the hole 102. The end portion 103 is bent substantially in an L shape from the crossover portion 104. When an inward load is applied to the rail 78, the transition portion 104 abuts against the outer surface of the pillar inner panel 62, and when an outward load is applied to the rail 78, the outer surface of the end portion 103 is applied to the pillar inner panel 62. Abuts the inside surface of the When the outward load reaches a predetermined magnitude, the L-shaped end 103 extends, and the end 1
03 is separated from the pillar inner panel 62.

As shown in FIG. 7, when a load of a predetermined magnitude or more in the direction A toward the outside of the vehicle compartment is applied to the rail 78 via the slider 76, the hooked portion 8 of the end 86 of the rail.
8 is separated from the hole 84 and the rail 78 is
Deforms around the end 89 fixed at. Energy is absorbed by this separation and deformation.

In the embodiment of FIGS. 6 and 7, the rail 78
Only the upper end 86 is associated with the mounting means 82 and the lower end 89 is secured by bolts 92. Alternatively, the lower end 89 may be attached to the mounting means 82
The mounting can be performed by mounting means having the same structure as described above.

In the embodiment shown in FIGS. 9 and 10, the seat belt anchor 112 includes an anchor plate 114 that slidably supports the seat belt 34 and an anchor plate 1.
The slider 116 includes a slider 116 to which the slider 14 is attached and a rail 118 that movably supports the slider 116.

A displacement allowable interval 120 is formed between the rail 118 and the center pillar 30. Rail 118
Is attached to the center pillar 30 by attaching means 122 and bolts 128. Mounting means 122
Consists of a long hole 124 provided at one end 119 of the rail 118 and a bolt 126 that passes through the long hole 124 and is 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 119 of the rail 118 can be slid by a load directed outward of the vehicle compartment. That is, as a result of the screwing of the bolt 126, friction occurs between the flange 127 of the bolt and the inner surface of the rail 118, and furthermore, between the outer surface of the rail 118 and the inner surface of the center pillar 30. With a load equal to or greater than a predetermined value, the screwing amount of the bolt 126 is determined so that the load cannot be countered.

When a load greater than a predetermined value 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 by the bolt 126. Slides against the frictional force of The rail 118 also has a displacement allowable interval 1
Deform at 20. Energy is absorbed by the sliding and deformation of the rail 118.

In the embodiment shown in FIGS. 11 and 12, the seat belt anchor 132 is an anchor plate 134 for supporting the seat belt 34, a bolt 136 for attaching the anchor plate 134, and a center pillar 138 embedded in the center pillar 138. Rail 140 welded to 138
And the center pillar 1 movable along the rail 140
And a nut 144 secured to the slider 142 for screwing in a bolt 136.

In the embodiment shown in FIGS. 1, 4, 6 and 10, a recess or hole is provided in the center pillar 30, and the rails 46, 78, and 118 face the recess or hole.
11 and 12, the rail 140 is disposed outside the center pillar 138 such that the rail 140 forms a recess with respect to the center pillar 138. The rail 140 is formed such that its vertical cross section has a U-shape, and is welded to the center pillar 138 at its upper end and its lower end.

A hole 139 extending vertically is formed in the center pillar 138, and a nut 1 is inserted into the center pillar 138.
The slider 142 with the welded 44 is arranged and the nut 144
From the hole 139 inward. 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, two end portions 147 having a width smaller than the width of the hole 139 of the center pillar 138.
A middle part 148 of the plate 146 having a middle part 148 having a width larger than the width of the hole 139 is applied to the inner surface of the center pillar 138, and a screw 150 penetrating the two ends 147.
Thus, the plate 146 and the slider 142 are fixed. The spacer 151 is applied to the nut 144, and the bolt 136 is screwed into the nut 144 through the spacer 151.

As a result of the mounting as described above, a displacement allowable interval 152 is formed between the rail 140 and the slider 142, and the slider 142 is inseparable due to a load directed inward of the vehicle compartment, and is not separated from the vehicle compartment. 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 lock pin 156 is pulled out by operating the lever 154 with a knob (not shown) known per se.
The slider 142 is moved to an appropriate position along the rail 140. Then, when the knob is released, the lock pin 156 is fitted into the hole 158 of the rail 140, and the slider 142 is brought into a used state. In this use state, the bolt A 136 of the seat belt anchor 132 is turned to the outside of the cabin A
When a load of a predetermined direction or more is applied, the plate 146 is deformed,
As shown in FIG. 12, the slider 142 is
Separated from 38. Due to this separation, the rails 14 caused by the contact of the separated sliders 142 with the rails 140 are further reduced.
Energy is absorbed by the deformation of zero.

In the embodiment shown in FIG. 13, the vehicle has a garnish 162 disposed inside the center pillar 160. The garnish 162 is made of a resilient material such as urethane foam and has an energy absorbing ability. The center pillar 160 is the pillar inner panel 16
4, a pillar outer panel 166, and a 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 seat belt anchor 172 includes an anchor plate 174, a bolt 176 for attaching the anchor plate 174, a rail 178 disposed between the pillar inner panel 164 of the center pillar 160 and the reinforcing panel 168, and a rail 1.
And a slider 180 that is movably disposed within 78.

The nut 182 is welded to the slider 180 to protrude 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 vehicle cabin is applied to the seat belt anchor 172, the cap 184 of the anchor plate 174 strikes the garnish 162 and deforms the garnish 162, thereby absorbing energy.

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

Further, in the embodiment shown in FIG. 13, the seat belt anchor 172 has a bolt 1 between the mounting panel 170 of the center pillar 160 and the anchor plate 174.
A plate 188 arranged to surround 76. An allowable displacement gap 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
70 is deformable. Therefore, according to this so-called multiple energy absorbing structure, when a load in the A direction facing the outside of the passenger compartment 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 the slider 180 is moved by the pair of restraining portions 1 of the rail.
It is deformed by 79 and absorbs energy by each deformation.

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 disposed outside the pillar inner panel 194. On the other hand, the seat belt anchor 202 includes an anchor plate 204 for slidably supporting the seat belt 34, a bolt 206 for attaching the anchor plate 204, and a nut 20 for screwing the bolt 206.
8 is included.

A spacer 212 is applied to a deformable plate 210 to which a nut 208 is welded at the center, and a bolt 206 is screwed into the nut 208 through the spacer 212, and the bolt 206 is attached to the center of the plate 210. The plate 210 is welded to the outer surface of the pillar inner panel 194 at the periphery. As a result, the displacement allowable interval 214
And a pillar outer panel 196.
The pillar inner panel 194 is covered with the garnish 216.

When a load is applied to the seat belt anchor 202 in the direction A toward the outside of the cabin, the bolt 206 is displaced,
As a result, the plate 210 deforms outward as shown in FIG. 17, and absorbs energy due to the deformation.
Further, when the load increases, the welded portion 216 of the plate 210
Breaks and absorbs energy.

In the embodiment shown in FIGS. 18 and 19, the center pillar 220 has a pillar inner panel 222, a pillar outer panel 224 which is arranged outside the pillar inner panel 222 at an interval from the pillar inner panel 222, and a pillar inner panel 222. And a reinforcing panel 226 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 for attaching the anchor plate 234, and a nut 238 welded to an outer surface of the reinforcing panel 226.

The bolt 236 has a plurality of protrusions 237 spaced in the axial direction, in the embodiment shown, two protrusions 237. 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 small-diameter raised portions may be irregularly arranged to form projections. On the other hand, the welding strength of the nut 238 is determined such that the nut 238 is broken by a load of a predetermined magnitude in the direction A 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 a predetermined load or more is applied to the seat belt anchor 232 in the direction A toward the outside of the passenger compartment, the nut 238
Is broken, and the protrusion 237 of the bolt 236 pushes and deforms the hole 227 of the reinforcing panel 226 to deform the bolt 236.
36 is displaced outward. Energy is absorbed by the fracture of the nut weld and the deformation of the hole in the reinforcing panel. When there is no reinforcing panel, the nut 238 is welded to the pillar inner panel 222, and the hole of the pillar inner panel 222 is deformed by the protrusion 237 of the bolt 236.

In the embodiment shown in FIG.
Reference numeral 50 includes a pillar inner panel 252 and a pillar outer panel 254 spaced outward from the pillar inner panel 252. On the other hand, the seat belt anchor 262
Has an anchor plate 264 that slidably supports the seat belt 34 and a bolt 266 for attaching the anchor plate 264.

Further, a means 270 comprising a support portion 272, a pin 273, and a hole 274 for attaching the anchor plate 264 to the pillar inner panel 252 of the center pillar 250 is provided. A bolt 266 passing through 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 tapers outward. This pin 27
3 is attached to the pillar inner panel 252 by the support portion 272, and the tapered surface 275 is
52 can be entered into the hole 274. A displacement allowable interval 278 is formed between the pillar inner panel 252 and the pillar outer panel 254.

When a load in the direction A directed outward of the passenger compartment is applied to the seat belt anchor 262, as shown in FIG.
The tapered surface 275 of the pin 273 is the pillar inner panel 25
And enters the second hole 274 to deform the periphery of the hole 274,
Absorb energy. In this case, as shown in FIG. 20D, it is preferable to provide a plurality of radial slits 276 in the hole 274 of the pillar inner panel 252 so that the peripheral edge of the hole 274 is surely deformed.

In the embodiment shown in FIG.
90 is a pillar outer panel 292 and a reinforcing panel 29
4, there is no inner panel at the mounting portion of the seat belt anchor 302, and the garnish 296 covers the center pillar 290. On the other hand, the seat belt anchor 302 is an anchor plate 304 for supporting 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 connected to the center pillar 29
A plurality of wires 310 are provided as a means for attaching to the zero. The wire 310 stretches over the nut 308,
It is fixed to the center pillar 290. The wire 310 and the nut 308 are attached to the mounting bracket 31 having a substantially U-shape.
2, the nut 308 and the mounting bracket 312 are welded at a portion 313 outside the wire 310 to form a wire 31.
The portions inward from zero are not welded or are joined in a slightly welded state. As a result, the allowable displacement interval 3
14 is formed between the nut 308 and the reinforcing panel 294.

When a load is applied in the direction B toward the inside of the vehicle compartment, that is, when the seatbelt device receives a load to achieve its original function, the welded portion 3 between the nut 308 and the mounting bracket 312 is formed.
13 prevents the wire 310 from coming off.
The load in the direction is received by the elasticity of the wire 310.
On the other hand, when a load in the direction A is applied to the outside of the passenger compartment, the wire 310 first expands to absorb energy, and with a larger load, the wire 310 comes off the portion 314, thereby absorbing energy. .

[Brief description of the drawings]

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

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

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 another embodiment of the seatbelt device for a vehicle according to the present invention.

FIG. 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 still another embodiment of the vehicle seatbelt device according to the present invention, in which some parts are exploded.

7 is a sectional view taken along line 7-7 in 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 vehicle shown in FIG. 6, wherein a and b show different embodiments.

FIG. 9 is a cross-sectional view taken along a substantially vertical plane of still another embodiment of the vehicle seatbelt device according to the present invention.

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

FIG. 11 is a cross-sectional view taken along a substantially vertical plane of still another embodiment of the vehicle seatbelt device according to the present invention.

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

FIG. 13 is a sectional view taken along a substantially horizontal plane of still another embodiment of the vehicle seatbelt device according to the present invention;
The anchor plate is shown rotated approximately 90 ° for convenience of explanation.

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

FIG. 15 is a perspective view of still another embodiment of the vehicle seatbelt device according to the present invention.

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

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

FIG. 18 is a cross-sectional view taken along a substantially vertical plane of still another embodiment of the vehicle seatbelt device according to the present invention.

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

FIG. 20 is a view showing still another embodiment of the seat belt device for an automobile according to the present invention, wherein a is a perspective view, b is a cross-sectional view cut along the line bb in FIG. Figure, d
FIG. 3 is a perspective view of a center pillar.

FIGS. 21A and 21B show still another embodiment of the vehicle seatbelt device according to the present invention, wherein a is a front view, b is a cross-sectional view taken along line bb of FIG. FIG. 4 is an enlarged sectional view similar to FIG.

[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 Mounting means 38, 80, 120, 152, 186, 214, 240
Allowable displacement interval 278, 314 Allowable displacement 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

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tohru Ito 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation (72) Inventor Yasunori Suezawa 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation (72) Inventor Shuji Yamada 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Co., Ltd. (56) References JP-A-3-24954 (JP, U) JP-A 4-71351 (JP, U) (58) ) Surveyed field (Int.Cl. ⁶ , DB name) B60R 22/20 B60R 22/24

Claims (16)

(57) [Claims] 1. An automobile seatbelt device comprising: a seatbelt anchor including a plurality of components and a seatbelt slidably supported by the seatbelt anchor, the seatbelt device being disposed on a center pillar of the vehicle, Attachment means for attaching one of a plurality of parts of the seat belt anchor to the center pillar, and a load applied by the attachment means or the attachment means from the inside of the cabin to the outside of the cabin. A displacement allowance interval for absorbing energy that allows displacement outside the cabin, wherein the part or the attachment means attached by the attachment means is directed toward the outside of the cabin within the displacement allowance interval. An automotive seat belt device that deforms and absorbs energy. 2. The component or the mounting means mounted by the mounting means is more easily deformed when a load directed outward of the vehicle compartment is applied than when a load directed toward the interior of the vehicle compartment is applied. The automotive seatbelt device according to claim 1, wherein the vehicle seatbelt device is formed as follows. 3. The vehicle seat belt device according to claim 1, wherein a plurality of said displacement allowable intervals are provided, and energy is absorbed at a plurality of locations. 4. A plurality of parts of the seat belt anchor include an anchor plate for supporting the seat belt, a slider for mounting the anchor plate, and a slider for supporting the slider in a height-adjustable manner, which is mounted on the center pillar. The vehicle seat belt device according to claim 1, wherein a height of the seat belt anchor is adjustable. 5. The vehicle according to claim 4, wherein the displacement allowable interval is formed between the rail and the center pillar, and the mounting means includes an energy absorbing component disposed within the displacement allowable interval. Seat belt device. 6. The energy absorbing component is cylindrical.
The vehicle seatbelt device according to claim 5, further comprising a staggered notch at both ends in the axial direction. 7. The displacement allowable interval is formed between the rail and the center pillar, and the mounting means includes at least one hole formed in the center pillar and a load directed inward of a vehicle compartment. One end of the rail inserted into the hole so as to be inseparable and separable by a load directed to the outside of the cabin, and the one 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 displacement allowable interval is formed between the rail and the cetane pillar, and the mounting means is arranged such that a longer axis provided at at least one end of the rail is in a vertical direction. And a bolt which is screwed into the center pillar through the elongated hole so that the one end of the rail can slide by a load directed outward of the vehicle compartment. The vehicle seat belt device according to claim 4, wherein energy is absorbed by sliding of said one end portion and deformation of said 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 places, an upper end and a lower end. Attached to a pillar, the slider is inseparable due to the inward load of the cabin,
The slider is detachably mounted on the center pillar so as to be separable by a load directed to the outside of the passenger compartment, and absorbs energy by separating the slider and further deforming the rail by contact of the separated slider with the rail. An automobile seat belt device according to claim 4. 10. The vehicle further includes a garnish disposed inside the center pillar and capable of absorbing energy, the garnish being deformed by an anchor plate that is one of a plurality of parts of the seat belt anchor. The vehicle seat belt device according to claim 1, wherein the vehicle seat belt device is configured to absorb 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, wherein the rail is embedded in the center pillar. A pair of constraining portions tapered from the inside to the outside in a portion outside the chamber, the displacement allowable interval is formed between the slider and the constraining portion of the rail, The vehicle seat belt device according to claim 4, wherein the slider is deformable by a restraining portion of the rail. 12. A plurality of parts of the seat belt anchor, further comprising: a bolt for attaching the anchor plate to the slider; and a bolt surrounding the bolt between the center pillar and the anchor plate; A plate that is deformable by a center pillar,
The vehicle seat belt device according to claim 11, wherein another allowable displacement interval is formed between the plate and the center pillar. 13. The center pillar has a pillar inner panel and a pillar outer panel disposed outside the pillar inner panel, and the mounting means is fixed to an outer surface of the pillar inner panel at a peripheral portion. And a deformable plate fixed to a bolt which is one of a plurality of parts of the seat belt anchor at a central portion, and the displacement allowable interval is formed between the plate and the pillar outer panel. The seatbelt device for an automobile according to claim 1. 14. The center pillar has a pillar inner panel and a pillar outer panel disposed outside the pillar inner panel, and a plurality of parts of the seat belt anchor are spaced apart in the axial direction. A bolt having a plurality of protrusions on an outer peripheral surface, and a nut fixed to the pillar inner panel and screwing the bolt; the displacement allowable interval is formed between the nut and the pillar outer panel; The protrusion pushes and deforms the hole of the pillar inner panel that penetrates the bolt,
The vehicle seatbelt device according to claim 1, which absorbs energy. 15. The center pillar has a pillar inner panel and a pillar outer panel disposed outside the pillar inner panel, and the mounting means includes a support provided on the pillar inner panel; An anchor plate, which is one of a plurality of parts of the 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 support 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, and a tapered surface of the pin enters the hole and a peripheral portion of the hole is formed. The vehicle seatbelt device according to claim 1, wherein the vehicle seatbelt device deforms and absorbs energy. 16. The plurality of parts of the seat belt anchor include an anchor plate for supporting a seat belt, a bolt for attaching the anchor plate, and a nut screwed into the bolt. The vehicle seatbelt device according to claim 1, further comprising a plurality of wires stretched over a nut and fixed to the center pillar.