JPH0781509A - Spacer block provided with shock absorbing function and hanger bracket - Google Patents

Abstract

PURPOSE:To enable the damage caused by an accident when a vehicle accident is generated to be restrained to the minimum extent by interposing a distortion shell capable of freely contracted/extended between insert-type inner and outer tension posts between which the gap is provided in the shock absorbing direction between works. CONSTITUTION:One work 1 and the outer work 2 are connected to each other through insert-type inner and outer tension posts 3, 4 on which a distortion shell 5 is provided. When one work 1 is pressed in the P direction, the inner shock tension post 3 is pressed in the same direction, and a main body part 5c is extended. While when the other work 1 is pressed in the direction opposite to the P direction, the inner tension post 3 is pressed in the direction opposite to the P direction, thereby shock is effectively absorbed through the contraction/ extension of the main body part 5c. Accordingly, shock energy is reliably and smoothly absorbed through the contraction/extension of the main body part 5c and the buckling deformation of the works 1, 2, thereby the excellent effect for restraining the vehicular damage caused by an accident to the minimum extent can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spacer block with a shock absorbing function and a hanger bracket capable of effectively absorbing the first shock of the barrier when a vehicle accident occurs and the second shock of the steering wheel.

[0002]

2. Description of the Related Art Conventionally, various vehicles in modern society are, as is well known, the latest technological development products that are indispensable for the maintenance and innovation of cultural life. However, in the social situation based on the traffic conditions in the advanced countries of the world, along with strengthening various regulations for vehicles, further safety measures, standardization of standards, innovation of various functions such as standardization of parts are the most important matters. There is. In view of such a situation, various shock absorbing mechanisms and the steering shaft device have been adopted in various parts of various vehicle body frames. There is the following invention, an example of which is given in the prior art document.

First, looking at the frame structure relationship of the vehicle body,
As a urethane injection structure, a vehicle body strength member structure in which a low-density urethane and a high-density urethane are provided in a vehicle body strength member having a closed cross-section structure, and a high-density structure is provided in a closed space defined by the low-density urethane shielding portion. There is a structure of a vehicle body strength member structure of Japanese Patent Laid-Open No. 4-334664 which is filled with density urethane. As a honeycomb-shaped structure, a shock absorbing member having a honeycomb structure is provided on a frame member.
There are frame structures for automobiles of Japanese Patent No. 479 and 64-67483. JP-A-2-63978 and JP-A-2-7447 adopt a buckling formation structure such as small holes in a frame material as a structure for absorbing shock through a buckling deformation phenomenon.
There is an automobile frame structure of No. 5 and a vehicle impact absorbing frame of Japanese Patent Laid-Open No. 5-85402. In addition, as a structure of a light metal frame, a joint flange is provided at a widthwise edge of a light metal long plate material disclosed in Japanese Patent Laid-Open No. 4-297376, and the joint flange is joined by spot welding and bonding at predetermined intervals in the longitudinal direction to achieve high rigidity. There is a vehicle body strength member structure of an automobile in which a reinforcing rib is provided on a member main body made of a light metal long plate member disclosed in JP-A-5-65076.

Next, regarding the steering shaft device, as a structure for inserting an impact absorbing member into the steering shaft, a characteristic of a structure for efficiently absorbing energy at the time of impact is filled with a fluid substance and granules. Kosho 57-41
There is a shock absorbing steering shaft device of No. 389 and an impact energy absorbing device of Japanese Patent Publication No. 57-44501.
As a structure for inserting a flexible member into a steering shaft, there is an impact energy absorbing device in a steering device of Japanese Patent Application Laid-Open No. 1-1119471 having a structure in which an energy absorbing member that is folded and has a function of absorbing an impact is provided. As a steering column system, a shock energy absorption tilt type steering column of Japanese Patent Laid-Open No. 1-249571, which employs a tearing / shear breaking structure, Japanese Patent Laid-Open No. 4-2.
There is an energy absorbing system of 30470 or a shock absorbing steering column of Japanese Patent Laid-Open No. 5-155342 which is a combination of shear failure and plastic deformation.

[0005]

The shock absorbing mechanism and the steering shaft device in each portion of the vehicle body frame, which have been described in detail above, are configured to immediately absorb the shock at the time of the first shock. A considerable impact force or pressing force is required for one impact. Therefore, during the impact, the impact on the human body is increased, and in some cases, a considerable impact or bruise is caused, which is a serious problem. Further, as described above, since the structure is designed to immediately absorb the shock at the time of the first shock, at the time of the shock, the shock absorbing action is activated at once. Therefore, the shock to the human body is large, and various dangers such as a great danger or a sudden danger can be considered.

Considering the above comprehensively, when a vehicle accident occurs, the vehicle operates efficiently, safely and surely (absorbs impact energy), and causes various damages (hereinafter referred to as an accident) due to the occurrence of the vehicle accident. There is room for further study or technical improvement to minimize damage).

[0007]

In view of the above, the present invention provides
Unfortunately, even in the event of a vehicle accident, the aim is to provide the industry with an impact absorbing member that absorbs the impact energy with high efficiency, safety and reliability, and minimizes damage. The gist of this is that a nested inner / outer tension post interposed between the works, a shock absorption distortion shell interposed between the inner and outer tension posts, and one of the works and the outer tension post, And a spacer block and a hanger bracket with a shock absorbing function, which are composed of the other work of the above work and a shock absorbing gap provided between the inner tension posts.

[0008]

The function of the present invention (impact absorption state) will be described below. According to the present invention, the distortion shell extends the first impact of the barrier and the second impact caused by the steering wheel or the like when a vehicle accident occurs against the first impact energy corresponding to each phenomenon, and the second impact energy. To deal with this, shrinkage deformation is dealt with to absorb impact energy and reduce the extent of accident damage. The spacer block absorbs energy in two steps by the distortion shell and the cushion shown in FIG. Then, this distorted shell is selected in accordance with the designated standard of each administrative institution by expanding metal, flexible tube, etc. in synchronization with each numerical value grade. Further, this mechanism retains the function of specification as a shock absorbing spacer block, and also has the function of a hanger bracket for installing a bumper or the like. Then, by standardizing the dimensions of this member, the specifications can be standardized as shown in FIG. 3 as a reference fitting.

FIG. 2 shows an example of the operating state.
That is, in this figure, when an impact force is applied to one work from the P direction, the one work plastically deforms (buckles) corresponding to the length shown in FIG.
There is no gap for absorbing impact energy provided between one work of one work and the outer tension post and between the other work of the work and the inner tension post or cushion, and the distortion is extended, and it is provided on the inner tension post. The counter cap hits against the cushion and absorbs the impact energy in two steps as described above.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 indicates, for example, one work of the rear side cross member that controls the cross member reinforce impact absorbing mechanism A, and 2 indicates the other work of the frame body, respectively. The one and the other workpieces 1 and 2 are, as shown as a fitting state example in FIG. 3, other door beam impact absorbing machine B, instrument panel hose impact absorbing mechanism C, front / rear bumper hanger impact absorbing mechanism D, The respective works such as D ′, the steering column impact absorbing mechanism E, the side frame beam impact absorbing mechanism F, etc. are targeted. The one work 1 and the other work 2 are connected to each other via inner and outer tension posts 3 and 4, which are nested, and a distortion shell 5 is provided on the inner and outer tension posts 3 and 4. That is, one end 5a of the distortion shell 5 is welded to the free end 4a of the outer tension post 4, and the other end 5b of the distortion shell 5 is welded to the free end 3a of the inner tension post 3, and its flexible property is maintained. The provided main body portion 5c is extensiblely inserted between the inner and outer tension posts 3 and 4.

Therefore, when the one work 1 is pressed in the P direction, the inner tension post 3 is pressed in the same direction, and the main body portion 5c is expanded. Another work 1
Is pressed in the anti-P direction, the inner tension post 3 is pressed in the anti-P direction, and the impact is effectively absorbed through expansion and contraction of the main body portion 5c.

A preferred example of attaching the inner tension post 3 to one of the works 1 will be described. The beam 6 (stiffener) which constitutes the bumper beam, the lateral beam, the outer beam or the like provided on the one work 1 is fitted. It is provided in a horizontal direction (not shown in the figure, but in a diagonal direction, a vertical direction, etc.) substantially at the center of the one work 1 via the plate 7. Further, a preferred example of attaching the outer tension post 4 to the other work 2 will be described. A beam 8 (stiffener) forming a frame beam, a cross member beam or the like provided on the other work 2 is fitted to the other work 2 via a fit plate 9. The workpiece 2 is provided in a substantially horizontal direction in the center (not shown, but there are oblique directions, vertical directions, etc.). A cylindrical hollow portion 10 is formed between the inner and outer tension posts 3 and 4, and the distortion shell 5 is inserted in the hollow portion 10.

A gap 11 for absorbing impact energy is provided between one work 1 and the free end 4a of the outer tension post 4, and between the free end 3a of the inner tension post 3 and the other work 2. Is a gap 12 for absorbing impact energy
However, the impact in the P direction is first absorbed through the gaps 11 and 12 and the buckling deformation phenomenon of the one work 1. After that, it is configured to absorb the expansion and contraction of the distortion shell 5 and the buckling deformation phenomenon of the one work 1.

A cushion 13 for absorbing impact energy is provided in one of the gaps 12, and it may be provided if necessary. In the figure, 14 is the inner tension post 3
Shows a counter cap inserted in the free end 3a of the above, and the mark ● indicates welding.

[0015]

As described in detail above, according to the present invention, the inner and outer tension posts provided so as to have a gap in the impact absorbing direction between the works are formed in a telescopic manner, and the telescopic posts can be freely expanded and contracted between the inner and outer tension posts. Since the distortion shell is provided in the structure, the present invention unfortunately absorbs the impact energy with high efficiency, safely and surely even in the event of a vehicle accident, and minimizes damage. The aim is to be able to provide a shock absorbing member for industrial use. In addition, the first and second impact energies can be reliably and smoothly absorbed through expansion and contraction of the distortion and buckling deformation of the work, and the damage of the accident can be suppressed with a minimum limit. Further, it also has a practical effect that can be easily installed in each member of the vehicle shock absorbing mechanism.

If a cushion is provided,
In addition to the impact energy absorption by the inner and outer tension posts, the impact energy absorption by the cushion is further added, and the impact energy absorption effect can be greatly exhibited under the so-called two-stage system.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part.

FIG. 2 is a cross-sectional view showing a situation when absorbing impact energy.

FIG. 3 is a partially cutaway schematic view illustrating a portion to which a shock absorbing mechanism can be applied.

[Explanation of symbols]

 1 Work 2 Other Work 3 Inner Tension Post 3a Free End 4 Outer Tension Post 4a Free End 5 Distortion Shell 5a One End 5b Other End 5c Main Body 6 Beam 7 Fit Plate 8 Beam 9 Fit Plate 10 Cavity 11 Gap 12 Gap 13 Cushion 14 Counter cap A Cross member Renforce impact absorption mechanism B Door beam impact absorption mechanism C Instrument panel hose impact absorption mechanism D Front bumper hanger impact absorption mechanism D'Rear bumper hanger impact absorption mechanism E Steering column impact absorption mechanism F Side Frame beam shock absorption mechanism

Claims (2)

[Claims] 1. A nestable inner / outer tension post interposed between works, a shock absorption distortion shell interposed between the inner and outer tension posts, and one of the works and the outer tension post. And a space for shock absorption provided between the other work of the above work and the inner tension post, and a spacer block and a hanger bracket with a shock absorption function. 2. A nestable inner / outer tension post interposed between the works, a shock absorption distortion shell interposed between the inner and outer tension posts, and between one of the works and the outer tension post. And a shock absorbing gap provided between the other work of the work and the inner tension post, and a cushion provided between the other work of the work and the inner tension post, with a shock absorbing function. Spacer block and hanger bracket.