JP2002331896A - Energy absorber of vehicle side - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an energy absorber on the side of a vehicle, capable of coping with shock from various directions with a smaller number of energy absorbers. SOLUTION: This energy absorber has at least a substantially circular first projecting part 10 projected from the cabin inside wall surface on the side of the vehicle toward the outside of the cabin, and a substantially elliptical second projecting part 11 projected further from the first projecting part 10 toward the outside of the cabin. An easily broken part 12 having a crank-like section is formed between the first projecting part 10 and the second projecting part 11 so that the second projecting part 11 can be moved to the inside of the cabin. The apex 11a of the second projecting part 11 positioned on the outermost side of the cabin is formed spherical.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an energy absorbing device for a side portion of a vehicle, which alleviates an impact on an occupant in a side collision of the vehicle.

[0002]

2. Description of the Related Art As a conventional energy absorbing device for a vehicle side portion, as disclosed in Japanese Utility Model Laid-Open No. 4-129315, Japanese Utility Model Laid-Open No. 6-42420, etc. In some cases, a rectangular cushioning member is formed between the door trim and the door panel, that is, from the door trim toward the outside of the vehicle compartment.

[0003]

However, in such a conventional vehicle side energy absorbing device, the absorption value of the impact energy differs depending on the direction in which the occupant hits, that is, the input direction, and the energy absorption device in various directions. It must be installed in advance so that the cost rises and the degree of freedom in design is limited.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art, and provides an energy absorbing device for a vehicle side portion which can respond to impacts from various directions with a small energy absorbing device. The purpose is to do.

[0005]

According to the first aspect of the present invention,
A first protrusion having a substantially circular shape formed so as to protrude from the side wall surface of the vehicle interior side of the vehicle toward the outside of the cabin; and a substantially circular shape formed further protruding from the first protrusion to the outside of the vehicle cabin. And at least a second protrusion having a shape, wherein the first protrusion and the second
Between the protruding portions, an easily breakable portion having a crank-shaped cross section is formed so that the second protruding portion can move to the inside of the vehicle, and the top of the protruding portion located most outside the vehicle compartment is formed in a spherical shape. It becomes.

According to the first aspect of the present invention, since the protruding portion is formed in at least two steps and the easy-to-break portion having a crank-shaped cross section is interposed, it easily breaks when impact energy is applied. By breaking the portion, the impact energy can be gradually and surely absorbed, and the impact of the occupant on the side wall surface of the vehicle cabin due to the secondary collision is reduced. In addition, since the top of the protruding portion located most outside the vehicle compartment is formed in a spherical shape, input from any direction is not restricted. Since the easily breakable portion has a crank-shaped cross section, the adjustment of the amount of impact energy can be easily adjusted by tuning the easily breakable portion.

According to a second aspect of the present invention, there is provided the energy absorbing device for a vehicle side portion according to the first aspect, wherein the easily breakable portion is located at the second projecting portion from the top of the first projecting portion. Is formed on the inside of the vehicle, and an energy absorbing portion is formed on a slope from the top to the skirt.

According to the second aspect of the present invention, since the energy absorbing portion is formed on the slope from the top of the first projecting portion to the bottom of the second projecting portion, the energy absorbing portion is formed in the first projecting portion. (2) The impact energy is absorbed as the protrusions enter, and there is no member that hinders the absorption.

[0009] The invention according to claim 3 is the invention according to claim 1 or 2.
Item 4. The energy absorbing device for a vehicle side portion according to Item 1, wherein a skirt portion of the second protrusion is formed in a curved shape toward a top of the first protrusion.

According to the third aspect of the present invention, since the skirt of the second projection is formed in a curved shape toward the top of the first projection, when the second projection moves. The hem of the second protruding portion does not become an edge, and there is little possibility that a trouble such as the side wall surface of the vehicle interior piercing the side of the vehicle.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS.

Reference numeral 1 denotes an automobile as a vehicle, and a side door 2, which is a "vehicle side portion", includes an outer panel 3 and an inner panel 4, and a side window panel 5 can be moved up and down between the panels 3 and 4. It is interposed. The surface of the inner panel 4 (the surface on the vehicle interior side) is defined as “the vehicle interior side wall surface”.
Are covered by the door trim 6.

At a position below the armrest portion 6a of the door trim 6, an impact absorbing member 7 for reducing impact energy due to a secondary collision of the occupant 9 is disposed. It has an inside handle, speaker, pocket, etc. that can be opened.

As shown in FIGS. 3 and 4, the shock absorbing member 7 has a substantially circular first protruding portion 10 formed so as to protrude toward the OS outside the vehicle compartment. Furthermore, a second protrusion 11 having a substantially circular shape is formed so as to protrude toward the OS outside the passenger compartment, and the second protrusion 11 is provided between the first protrusion 10 and the second protrusion 11. As shown by an arrow in FIG. 6, an easily breakable portion 12 having a crank-shaped cross section is formed so as to be movable to the inside R side, and is located closest to the OS outside the vehicle compartment, that is, the top 11 a of the second protrusion 11. Is formed in a spherical shape.

The easily breakable portion 12 is provided with the first projecting portion 10.
Of the second protrusion 11 from the position of the top 10a
The position "b" is formed on the inside R side, and a plurality of through holes 13 as "energy absorbing portions" are formed on the slope from the top 10a to the skirt 11b.

The skirt portion 11b of the second projecting portion 11 is formed as shown in FIG.
As shown in FIG. 6 and FIG.
It is formed in a curved shape toward a.

Next, the operation of this embodiment will be described.

The first protrusion 10 and the second protrusion 11 are formed in at least two steps, and the easy breakable portion 12 having a crank-shaped cross section is interposed therebetween. When the impact energy is applied to the door trim 6, the easily breakable portion 12 is broken, so that the impact energy can be gradually and surely absorbed, and the impact of the side door 2 on the door trim 6 due to the secondary collision of the occupant is reduced. You.

Further, since the top 11a of the second protruding portion 11 located closest to the OS outside the vehicle compartment is formed in a spherical shape,
The inner panel 4 of the side door 2 regardless of input from any direction
, And there is no restriction on impact energy absorption.

Further, since the section of the easily breakable portion 12 has a crank shape, the amount of impact energy absorbed can be easily adjusted by tuning the easily breakable portion 12.

Further, since the through hole 13 is formed on the slope from the top 10a of the first protrusion 10 to the skirt 11b of the second protrusion 11, the second protrusion is formed in the first protrusion 10. 1
As a result, the impact energy is absorbed as 1 enters, and there is no member that interferes with the absorption.

Since the bottom 11b of the second projection 11 is formed in a curved shape toward the top 10a of the first projection 10, the second projection 11 moves when the second projection 11 moves. 1
The hem 11b of the first door does not become an edge, and there is little possibility that a trouble such as the door trim 6 piercing the side door 2 occurs.

The first protrusion 1 is used as the shock absorbing member 7.
The shape is not limited to the two-step shape of 0 and the second protrusion 11, but may be three steps or four steps.

Further, the skirt portion 10b of the first projecting portion 10
Are formed in a flange shape so as to be welded to the door trim 6.

[0025]

According to the first aspect of the present invention, since the protruding portion is formed in at least two steps and the easily breakable portion having a crank-shaped cross section is interposed, when impact energy is applied, By breaking the easily breakable portion, the impact energy can be gradually and surely absorbed, and the impact on the side wall surface of the vehicle interior side by the occupant due to the secondary collision is reduced. In addition, since the top of the protruding portion located most outside the vehicle compartment is formed in a spherical shape, input from any direction is not restricted. Since the easily breakable portion has a crank-shaped cross section, the adjustment of the amount of impact energy can be easily adjusted by tuning the easily breakable portion.

According to the second aspect of the present invention, since the energy absorbing portion is formed on the slope from the top of the first projecting portion to the bottom of the second projecting portion, the energy absorbing portion is formed in the first projecting portion. (2) The impact energy is absorbed as the protrusions enter, and there is no member that hinders the absorption.

According to the third aspect of the present invention, the skirt of the second projecting portion is formed in a curved shape toward the top of the first projecting portion, so that when the second projecting portion moves, The hem of the second protruding portion does not become an edge, and there is little possibility that a trouble such as the side wall surface of the vehicle interior piercing the side of the vehicle.

[Brief description of the drawings]

FIG. 1 is a perspective view of an automobile as a vehicle according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line SA-SA of FIG. 1;

FIG. 3 is a perspective view of the side wall surface of the vehicle cabin in FIG. 2 as viewed from the outside of the vehicle.

FIG. 4 is a perspective view of the shock absorbing member of FIG. 3;

FIG. 5 is a sectional view taken along the line SB-SB in FIG. 4;

FIG. 6 is a cross-sectional view showing a state in which the second protrusion of FIG. 5 is immersed in the first protrusion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automobile (vehicle) 2 Side door (vehicle side part) 6 Door trim (side wall surface of vehicle interior) 7 Shock absorbing member 10 First protruding part 10a Top part of first protruding part 10b Hem part of first protruding part 11 Second protruding part 11a Top part of second protruding part 11b Hem part of second protruding part 12 Fracture part 13 Through hole (energy absorbing part) R Car compartment OS Outside car compartment

Claims (3)

[Claims] 1. A substantially circular first protruding portion formed from a side wall surface of a vehicle interior side of a vehicle toward a vehicle exterior side, and further protruded from the first projection portion toward the vehicle exterior side. And at least a substantially circular second protruding portion formed between the first protruding portion and the second protruding portion. The energy absorbing device for a vehicle side portion, wherein a top portion of the protruding portion located most outside the vehicle compartment is formed in a spherical shape. 2. The energy absorbing device for a vehicle side portion according to claim 1, wherein a position of a skirt portion of the second protruding portion is smaller than a position of a top portion of the first protruding portion. An energy absorbing device for a side portion of a vehicle, wherein an energy absorbing portion is formed on a slope from the top portion to the skirt portion. 3. The energy absorbing device for a vehicle side portion according to claim 1, wherein a skirt portion of the second projecting portion is formed in a curved shape toward a top portion of the first projecting portion. An energy absorbing device for a vehicle side portion, wherein the energy absorbing device is provided.