KR0149336B1 - A impact absorbing device of a car - Google Patents

Abstract

The radiator support upper and lower member assemblies are located at the front end to solve the limitation of design freedom in designing the engine room and to increase the shock absorption in the engine room to ensure the safety of the occupant in the event of a collision or driving accident. In a frame structure in which the dash panel assembly is disposed in the vehicle width direction spaced apart from each other, and the front side member assembly and the shock absorber housing panel assembly are formed laterally to form an engine room.

A shock transmission member fixedly coupled to one side of the radiator support lower member assembly and formed of a hollow shaft;

An impact support member fixed to the dash panel assembly and formed of a shaft;

Wrapped around the outer circumferential surface of the front end of the impact support member is fixedly coupled, wraps the upper end of the shock transmission member is coupled, the shock absorbing portion is absorbed by cutting the projection while the shock transmission member slides in the middle portion of the inside Provided is an automobile shock absorber comprising a shock absorbing member.

Description

Automotive Shock Absorbers

1 is a plan view for explaining the application state of the embodiment according to the present invention,

2 is a side view of FIG. 1,

3 is a cross-sectional view showing an embodiment according to the present invention;

4 is an enlarged cross-sectional view of the shock absorbing part of FIG. 3;

5 is a graph showing a relationship between impact force and time according to an embodiment of the present invention;

6 is a perspective view showing a frame structure of an engine room of a conventional vehicle;

7 is a graph showing a relationship between impact force and time during a collision of a conventional vehicle.

[Industrial use]

The present invention relates to a shock absorber of a vehicle, and more particularly, to reduce the instantaneous maximum impact force in the event of a frontal collision or collision of the vehicle, to promote the safety of the occupant, and to increase the freedom of design of the engine room or the body frame. It relates to a shock absorber for.

[Prior art]

In general, the frame of the car is designed in the direction to promote the safety of the driver by absorbing the maximum impact force in the event of a crash.

In addition, with the emphasis on cost reduction, light weight, and structural simplification, the engine room is being designed to simultaneously solve crash safety performance.

6 is a perspective view showing a conventional automobile frame, and reference numeral 101 denotes an engine room.

In the engine room 101, the radiator support upper and lower member assemblies 103 and 105 are positioned at the front end, and the dash panel assembly 107 is disposed in the vehicle width direction at a predetermined distance so as to correspond to the radiator support upper and lower member assemblies 103 and 105. The assembly 109 and the shock absorber housing panel assembly 111 are interposed.

The engine room 101 having the above structure has a structure in which an engine is interposed therein.

In the conventional vehicle frame made as described above, when a collision or collision accident occurs, each panel assembly constituting the engine room 101 is crushed to absorb impact force.

FIG. 7 is a graph showing a relationship between impact force and time when a conventional vehicle collides, wherein the vertical axis represents impact force F and the horizontal axis represents time t.

The area h of the curve represents the impact energy, and the f point represents the instantaneous maximum impact force at the moment of collision of the vehicle.

Each of the panel assemblies described above is crushed in a collision, thereby reducing the instantaneous maximum impact force f so that the occupant can minimize the damage caused by the impact.

[Problems to Be Solved by the Invention]

However, the frame structure for automobiles has a disadvantage in that it cannot sufficiently absorb impact force due to the structural limitations of the frame forming the engine room during a collision accident and a collision accident, thereby ensuring the safety of the occupant as much as possible.

In addition, since the frame structure for automobiles must simultaneously consider the safety of impact and simplify the structure, reduce the weight, reduce the cost, and the like, it is not only possible to secure a safety design for impact, but also design freedom to utilize each design characteristic. There is a problem that the restriction is applied.

[Means to solve the problem]

The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to eliminate the constraints of design freedom in the design of the engine room and to increase the shock absorption in the engine room in the event of a collision or collision To provide a shock absorber for automobiles to ensure the safety of the occupants.

In order to realize the above object of the present invention, a radiator support upper and a lower member assembly are positioned at the front end, and a dash panel assembly is disposed in the vehicle width direction at a predetermined distance so as to correspond to the radiator support upper and lower member assemblies, and the front side member assembly and the shock absorber are laterally disposed. A frame structure in which a housing panel assembly is interposed to form an engine room, wherein the vehicle is constituted by a shock absorbing means interposed between the dash panel assembly and the radiator support lower member assembly in the engine room of the vehicle in the longitudinal direction to absorb external shocks. Provides a shock absorber for the.

[Action]

The above-described automobile shock absorber of the present invention can improve the safety of the occupant by absorbing shocks during collisions and collisions of the front surface, and has a structure in which a separate shock absorber is installed in the engine room. Therefore, the degree of freedom can be increased.

EXAMPLE

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail.

1 and 2 are plan and side views illustrating the application state of the embodiment according to the present invention, showing the engine room 1 of the vehicle and the shock absorbing means 2 interposed in the engine room 1. Doing.

The engine room 1 has a radiator support lower member assembly 3 installed on the front surface thereof, and a dash panel assembly 5 is installed at a predetermined distance from the radiator support lower member assembly 3. It is interposed.

And the shock absorbing means 2 is made of a structure that is fixed between the radiator support lower member assembly 3 and the dash panel assembly 5 described above.

As shown in FIG. 3, the shock absorbing means 2 includes an impact transmission member 9 interposed on the radiator support lower member assembly side and an impact support member 11 fixedly coupled to the dash panel assembly side. And the shock absorbing member 13 installed to surround the outer periphery of the ends of the shock supporting member 11 and the shock transmitting member 9.

The impact transmission member 9 is made of a hollow shaft.

The impact support member 11 is fixedly coupled to the dash panel assembly 5 and has a structure in which a screw thread is formed at a tip end thereof.

One end of the shock absorbing member 13 has a structure in which an end of the shock transmitting member 9 surrounds an outer circumferential surface thereof, and the other end of the shock absorbing member 13 is screwed with the impact supporting member 11.

The shock absorbing member 13 has a predetermined space therein, and the shock absorbing member 13 has a structure in which the shock absorbing part 15 is installed.

The shock absorbing portion 15 is provided in a form in which a plurality of protrusions 17 are in close contact with the impact transmission member 9, and as shown in FIG. 4, the protrusions 19 formed on the inner surface thereof, and It consists of a groove portion 21 formed at the lower end of the projection (19).

The protrusion 19 supports the shock transmission member 9 and has a structure that can be broken by the impact force when a collision or collision of the vehicle occurs.

Therefore, the material of the shock absorbing member 13 is preferably made of a brittle aluminum alloy material.

And the groove portion 21 is formed on one side of the bottom surface of the projection 19 and is made to ensure that a certain portion, that is, A-A portion is always cut when the projection 19 is subjected to impact force.

In the shock absorber for automobiles formed as described above, when the collision or impact of the vehicle occurs, the radiator support lower member assembly 3 is crushed and pushes the shock transmission member 9.

At this time, the shock transmitting member 9 in close contact with the protrusion 19 of the shock absorbing member 13 causes the protrusion 19 to be broken while sliding the inside of the shock absorbing member 13.

At this time, the protrusions 19 are broken at the A-A part, and the other protrusions 19 are continuously broken.

Therefore, the protrusions 19 are damaged to absorb the external impact force.

5 is a graph showing the relationship between impact force and time according to an embodiment of the present invention, where the vertical axis represents impact force F and the horizontal axis represents time t.

The area g represents the amount of impact energy, and a, b, c, d, and e represent the maximum impact force at the moment of impact.

In the graph described above, assuming that the weight and speed of the vehicle are the same, the impact energy represented by the area is the same.

However, as the shock is absorbed in the shock absorbing member 13 as described above, the time at the time of shock absorption is increased.

Therefore, the impact energy is proportional to the product of the impact force and time, so the impact force is relatively reduced.

And the instantaneous impact force also decreases as indicated by a, b, c, d, e.

[Effects of the Invention]

The shock absorber for automobiles of the present invention can provide safety for the occupant by absorbing a shock during a collision or collision by interposing a shock absorber in the engine room of the vehicle, and providing a separate shock absorber. This increases the design freedom of the engine room for appearance or light weight and cost reduction.

Claims (2)

At the front end, the radiator support upper and lower member assemblies are located, and the dash panel assembly is disposed in the vehicle width direction at a predetermined distance so as to correspond to the radiator support upper and lower member assemblies. A frame structure comprising: an impact transmission member fixedly coupled to one side of a radiator support lower member assembly and formed of a hollow shaft; An impact support member fixed to the dash panel assembly and formed of a shaft; Wrapped around the outer circumferential surface of the front end of the impact support member is fixedly coupled, wraps the upper end of the shock transmission member is coupled, the shock absorbing portion is absorbed by cutting the projection while the shock transmission member slides in the middle portion of the inside An automobile shock absorber comprising a shock absorbing member. According to claim 1, The shock absorbing portion is formed on the inner circumferential surface of the transmission member with a plurality of projections formed at equal intervals to correspond to the end of the shock transmission member, and the groove portion is formed in the bottom surface of the projection so that the projection is sheared at a predetermined position Automotive shock absorber characterized in that.