KR20050013040A - A shock absorber of bumper - Google Patents

Abstract

PURPOSE: A shock-absorbing device of a bumper is provided to excellently execute assembling and removing work by simplifying the structure and to secure passenger's safety by absorbing and dispersing impact energy caused by a collision of a vehicle. CONSTITUTION: A shock-absorbing device of a bumper(18) includes a first arm member(11) fixed to a frame(19) of a vehicle body; second arm members(12) fixed to the bumper; an intermediate interval metal decoration(13) of a pipe shape installed between the first and second arm members; and a shock-absorbing member(15) filled in the intermediate interval metal design. The shock-absorbing member is formed in a lotus root or structure. The intermediate interval metal decoration is integrated with the second arm members.

Description

A shock absorber of bumper

The present invention relates to a bumper impact device. More specifically, the bumper impact device is simple in structure, excellent in detachable workability, and absorbs and disperses impact energy during a vehicle crash to secure safety for drivers and passengers. It relates to a shock absorber.

A bumper mounted before and after a vehicle for suppressing an impact in a conventional vehicle crash and protecting a driver or a passenger is an intermediate spacer having a high rigidity between the vehicle frame 2 and the bumper 3 ( It is common that 5) is attached as the locking device 8 (see Fig. 9) and is intended to absorb mainly the energy of the collision vehicle mainly by deformation of the intermediate spacer 5.

As shock absorbers, springs are inserted between the body frame and the bumper, and the bumper itself is made of, for example, rubber or foamed plastic resin to utilize the elastic properties of the component itself. It has been disclosed that a carburetor is installed on the entire suction rubber by providing the entire suction rubber and the suction space having the entire suction gap and the suction rubber outer space on the suction rubber plate (patent). Document 1-Japanese Patent Laid-Open No. Hei 10-129372, Claim 1, FIGS. 1 to 3).

However, the conventional arrangement of an elastic body such as a spring or an impact absorber utilizes the elasticity of the elastic body itself, so that there is an effect of slowing down the impact in the event of striking a little, but the impact absorbing ability is insufficient. There is a problem in that the self-resilience of restoring the original form by the elasticity of the elastic body is transmitted to the driver at the time of not fully suppressing the impact in the city or crashing and stopping, thereby causing a serious secondary disaster.

In addition, in the shock absorber described in Technical Document 1, the impact absorption effect due to deformation of the front suction rubber and the rear suction rubber plate, the front suction gap, the compressed air, and the air pressure in the space of the suction plate are described. Due to the rebound effect, the shock absorbing effect is superior to the bumper of the conventional shock absorber. However, the shock absorbing effect is insufficient. There is.

The present invention has been intensively examined in view of such a situation. The purpose of the present invention is to provide a simple structure, which is excellent in desorption work, and absorbs and distributes the impact energy caused by the collision of the vehicle. In providing a shock absorber.

1 is a main cross-sectional view schematically showing the present invention shock absorber.

Fig. 2 is a main cross sectional view schematically showing a state of an impact buffer device after an impact.

3 is a main cross-sectional view showing an example of another intermediate spaced metal fittings, and the cushioning material is not actively shown.

Fig.4 (a)-(c) is a cross-sectional view of the principal part which shows typically the shock absorber provided with the intermediate space metal fitting of the other form which concerns on this invention.

Fig. 5 is a cross-sectional view of a main portion schematically showing another shock absorber of the present invention.

Fig. 6 is a cross-sectional view of a main portion schematically showing another shock absorber of the present invention.

Two abbreviated, intermediate interval metal fittings are installed with each other back to back.

Fig. 7 is a cross sectional view of a main portion schematically showing the present invention or another shock absorber.

About S-shaped intermediate spacing metal fittings are fitted to both ends of abbreviated metal spacing metal fittings.

Fig. 8 (a) is a sectional view showing the principal parts of the intermediate gap metal fittings of another embodiment of the present invention.

(b) is a fragmentary sectional view of a main part showing an impact buffer device (second embodiment) in which a plurality of the same intermediate interval metal fittings (31) are fitted together.

A plurality of fitted intermediate spacing metal fittings are housed in a housing (not shown) and installed freely or non-removably on the front and rear frame side of the body.

Fig. 9 is a sectional view of principal parts schematically showing a conventional shock absorber.

(Explanation of symbols for the main parts of the drawing)

1: conventional shock absorbing structure

2: vehicle frame

3: bumper

5: Intermediate Spacing Material

8: locking device

10: shock absorber

10 ': shock absorber

11: first arm member

11a: locking device (e.g. bolt nut)

12: second arm member

12a: locking device (e.g. bolt nut)

13: medium space metal fittings

13 ': Medium interval metal fittings

15: cushioning material

15 ': cushioning material

18 bumper

19: body frame

20: shock absorber

20a: shock absorber

20b: shock absorber

20c: shock absorber

21: no first arm

21a: Locking devices (e.g. bolt nuts)

22: second arm member

22a: locking device (e.g. bolt nut)

23: intermediate spacing

25: cushioning material

30: shock absorber

31: Intermediate spacing

32: main body

33: hollow pipe

34a: forward and backward connection

34b: forward and backward connection

35a: left and right connecting parts

35b: left and right connecting parts

40a: shock absorber

40b: shock absorber

40c: shock absorber

The invention of claim 1, which is a means adopted by the present invention in order to solve the above problems, is characterized in that the shock-absorbing device of the bumper, characterized in that the horizontal section is provided with a medium interval metal fittings formed in the shape of weak or S-shaped. Shall be.

The invention of Claim 2 makes it a summary that a hollow pipe is fixed to the inside of an electric intermediate space metal fitting in the impact buffer of the bumper of Claim 1.

The invention of Claim 3 makes the summary that the shock absorber of the bumper of Claim 1 or 2 WHEREIN: The cushioning material formed in the shape of a soft root or a loofah structure was filled in the inside of an electric intermediate space metal fitting.

According to the invention of claim 4, in the bumper shock absorber according to any one of claims 1 to 3, a first arm member having an electric intermediate interval metal fitting secured to the vehicle body frame side and a second arm member fixed to the bumper side are inserted. The main point of the installation is to

According to the invention of claim 5, the bumper shock absorber according to any one of claims 1 to 3, wherein the electric shock absorber is accommodated in a housing and is freely attached or detached from the body frame side with the housing. The point is that.

According to the shock-absorbing device of the present invention, the intermediate gap metal fittings can be easily detached from the vehicle frame and the intermediate gap metal fittings are formed in the shape of weak or weak S having rigidity or as hollow pipes. It can be irreversibly crushed (deformed) to absorb and disperse the energy of the impact vehicle that is then loaded or faced inclined at that time and reduce the impact at the time of collision by reducing the impact.

In addition, according to the invention of claim 2, since the hollow pipe is fixed to the inside of the intermediate gap metal fittings, it is possible to absorb and disperse about four times the collision energy than the intermediate gap metal fittings to which the hollow pipe is not fixed. The impact in the event of a collision can be alleviated, and according to the invention of claim 3, the intermediate gap metal fittings are integrally provided with a cushion material formed in the form of soft roots or scrubbers, and the intermediate gap metal fittings are irreversibly crushed (deformed) ) At that time, the energy of the collision vehicle can be absorbed and dispersed from both the intermediate metal fittings and the cushioning material, and the impact vehicle can be reduced to reduce the impact at the time of the collision.

(Embodiment of invention)

Embodiments of the present invention will be described in detail below by way of examples, but the present invention is not limited to the following examples, and the present invention is not limited by the following examples, and the design changes to various ways. We shall be able to perform.

1 is a cross-sectional view of main parts of an impact buffer device 10 according to a first embodiment of the present invention, and the bumper is shown as a cross section.

2 is a sectional view showing the principal parts of the impact releasing device 10 after a collision.

In the figure, the shock absorber 10 is secured to the first arm member 11 and the bumper 18, which are secured as a locking device (e.g. bolt nut) 11a on the body frame 19 side. (E.g., a bolt nut) 12a, the intermediate arm metal fittings 13 in the form of pipes provided between the second arm members 12 and the first and second arm members 11 and 12, respectively. The intermediate buffer metal 13 is filled with a buffer 15 made of plastic formed in a soft root or loofah structure.

The intermediate spacing metal fittings 13 are made of metal and are hollow bodies having an elliptical cross section. However, the cross-sectional shape of the intermediate space metal fittings may be, for example, polygonal (see Fig. 3), and the shape of each dimension may be appropriately changed. On the side of the vehicle frame 19 of the intermediate spacing metal fittings 13, a first arm member 11 for fastening (e.g. bolt nut fixing) to the vehicle frame 19 is welded and fixed, and the bumper 18 On the side, a second arm member 12 for fastening (for example bolt nut fixing) to the bumper 18 is welded. The shock absorbing material 15 is made of epoxy resin or metal, has rigidity, and is filled in the axial direction in the intermediate interval metal fitting 13. However, the raw material of the cushioning material is not limited, and it is preferable that it is made of plastic from the viewpoint of moldability and price, and may be a thermoplastic resin or a thermosetting resin. Further, the number, size, overall shape, etc. of the cushioning material 15 are not limited, and any of them may be arbitrarily designed. However, the material, jig shape, and the like of the intermediate interval metal fittings 13 and the cushioning material 15 may be appropriately modified in order to obtain the most appropriate cushioning effect in consideration of the type, speed, and weight of the assumed collision vehicle.

According to this shock absorbing device 10, the structure is simple and can be manufactured at low cost, and the desorption work with the vehicle frame can be easily performed. Moreover, since the hollow intermediate spacing 13 is provided in the up-down direction, it is firm against the weight load from the upper side, for example, it does not crush even if a person goes up to a bumper. In addition, the bottom plate or the lid 13 may be integrally or detachably attached to the middle gap metal fitting 13, but when the bottom plate or the lid is attached, the middle gap metal fitting 13 acts as a resistance material when pressed and crushed (plastic deformation). For example, when the vehicle collides with the wall surface, as shown in Fig. 2, the intermediate gap metal fitting 13 is pressed and crushed (plastic deformation) and the cushioning material 15 is pressed and crushed together so that the By absorbing the collision energy, the collision difference can be slowed down to mitigate the impact during the collision. In addition, since the elastic body is not provided as in the prior art, the self-resilience of the elastic body is not transmitted to the driver. That is, secondary accidents caused by self-resilience transmitted to the driver can be prevented. If the stiffness of the intermediate spacing 13 or the cushioning material 15 is too small, all of the energy of the crash vehicle cannot be absorbed. If the stiffness is too large, the energy of the crash vehicle cannot be sufficiently absorbed. When the impact force of the city is increased, there is a fear that a problem that the safety of the occupant is not secured.

Next, Figs. 4A to 4C are cross-sectional views of main parts schematically showing impact shock absorbers 20a to 20c having intermediate interval metal fittings of other forms related to the present invention, and no shock absorbing material is shown.

In the figure, these shock-absorbing devices 20a to 20c are formed by bending the bumper side to form a horizontal cross section in the form of a flat cross section, and the first fixed to the body frame side of the intermediate interval metal fitting 23. In the interior of the electric intermediate spaced metal fittings 23 provided with the arm member 21, a buffer 25 made of plastic formed in a soft root or loofah structure is filled. For example, it is possible to cut the intermediate interval metal fittings 23 of the abbreviated shape into its weak S-shape and to separate the plurality at appropriate intervals (see Fig. 5). The two may be connected to form a double S shape (not shown), or the intermediate shape metal fittings 23 of the abbreviation type may be faced to each other (see FIG. 6) or the intermediate shape metal fittings of the abbreviation type may be used. It is possible to implement it in various combinations, such as by integrating and fitting the intermediate interval metal fittings of about S shape at both ends (see Fig. 7).

Especially, for example, the S-shaped intermediate spacing metal fittings with low impact resistance and the intermediate spacing metal fittings with high collision resistance are weak, or S-shaped at both ends of the intermediate spacing metal decorations with abbreviation resistance. In absorbing the energy of the collision vehicle, such as fitting a medium-gap metal fitting of the form, and integrating and integrating a plurality of intermediate-gap metal fittings with different cushioning functions, it is possible to absorb energy of a wide range of collision vehicles from light collision to collision. It is extremely suitable to allow a buffer.

Next, Fig. 8 (a) is a cross-sectional view schematically showing the intermediate gap metal fitting 31 of another form related to the present invention, and Fig. 8 (b) is a combination of a plurality of the intermediate gap fittings 31 of the present invention. It is sectional drawing of the principal part which shows the shock absorber 30 (2nd Example). The plurality of intermediate spaced metal fittings 31 fitted together are accommodated in a housing (not shown) so as to be freely attached or detached from the front and rear frames of the vehicle body.

The body portion 32 of the intermediate spacing metal fitting 31 is cut to an appropriate length for the hollow pipe-shaped aluminum formed by the extraction method, and the body portion 32 inside the body portion 32. The hollow pipe 33 of the same length as the length of is fixed. In addition, the main body portion 32 is provided with connecting portions 34a and 35b for connecting in the front and rear directions and connecting portions 35a and 35b for connecting in the left and right directions, for example, as shown in Fig. 8 (b). A number of intermediate spacing metal fittings 31 are connected to each other freely in the front, rear, left and right directions and are accommodated in the housing so that they can be freely attached or detached to the front frame or the rear frame of the vehicle along with the housing. The main body portion 32 of the intermediate spacing metal fitting 31 is very preferable because it has a simple structure and can be easily produced by aluminum extraction molding.

The material, the dimensional form, the overall form, or the combination of the above-described intermediate spacing metal fittings or the like of the intermediate spacing metal fittings and the cushioning materials according to the present invention described above are the most appropriate cushioning effects in consideration of the type, speed, and weight of the crash vehicle. It goes without saying that the design can be changed appropriately so that.

According to the above-described collision buffer device for a vehicle of the present invention, the structure is simple and the attachment and detachment work with the vehicle frame or the side door is easily performed, and furthermore it is economically advantageous. Moreover, since the hollow intermediate space metal fittings are arranged in the up-down direction and are firm against weight loads from above, they do not become distorted even if a person climbs on the bumper, for example. In addition, when the vehicle collides with the wall, for example, the intermediate interval metal fittings are crushed (plastically deformed) and the cushioning materials are crushed together to absorb the collision energy of the vehicle to slow down the collision vehicle. The impact at the time of a collision can be alleviated, and since the elastic body is not provided like the conventional one, the self-resilience of the elastic body is not transmitted to the driver. In other words, it is possible to prevent secondary disasters caused by the self-resilience transmitted to the driver, such that the effect is extremely effective.

Claims (5)

Bumper shock absorber, characterized in that the horizontal cross section is provided with a medium interval metal fittings formed in a weakΩ shape or weak S-shape The method according to claim 1, Bumper shock absorber, characterized in that the hollow pipe is fixed to the inside of the former intermediate interval metal fittings The method according to claim 1 or 2, Shock-absorbing device of the bumper, characterized in that the shock-absorbing material is formed in the inside of the electric intermediate interval metal fittings, the soft root or scrubber structure The method according to claim 3, The electric shock-absorbing device of the bumper, characterized in that the intermediate metal fittings are inserted by inserting the first arm member fixed to the body frame side and the second arm member fixed to the bumper side. The method according to claim 3, The shock absorber of the bumper, characterized in that the electric shock absorber is accommodated in the housing and is freely attached or detached from the body frame side together with the housing.