KR101869274B1 - Impact reducing apparatus - Google Patents

Abstract

A shock absorbing device is disclosed. According to an embodiment of the present invention, there is provided a shock absorber comprising: a first shock-absorbing member formed by combining a plurality of plate-like elastic members and including a middle portion and a pair of side portions bent at both sides of the middle portion; A plurality of second shock absorbing members for subsequently moderating an impact transmitted to the first shock absorbing member; A connecting member connecting the pair of side portions; And a support member that engages with the intermediate portion of the first shock absorbing member, wherein the plurality of second shock absorbing members are disposed between the side portion of the first shock absorbing member and the support member, 1 < / RTI > shock-absorbing member.

Description

[0001] IMPACT REDUCING APPARATUS [0002]

Embodiments of the present invention relate to a shock absorber. In particular, the present invention relates to a shock absorbing device that is installed in a place where an impact is expected, such as forward and rearward of a vehicle body, and absorbs impact energy in multiple stages when a collision against a vehicle or other structure occurs.

Generally, the bumper is installed on the front and rear of the vehicle body to absorb shock when colliding with a vehicle or an external object, thereby reducing damage to the vehicle and ensuring the safety of the occupant. Such a bumper is designed to absorb impact energy due to an external impact by simultaneously having a predetermined rigidity and an elastic force. In the case of a conventional bumper, there is an effect of mitigating the impact on a slight impact. However, when a strong impact such as a collision occurring during a high-speed travel occurs, the impact energy can not be sufficiently absorbed, It is difficult to prevent damages such as damage to the apparatus. The shock absorber for absorbing the energy is interposed in the inside of the bumper, but it does not absorb energy sufficiently generated by the impact.

Korean Utility Model Publication No. 20-1999-0017142 (May 25, 1999)

Embodiments of the present invention are intended to provide an impact damping device that absorbs impact energy in multiple stages in the event of a collision.

In addition, embodiments of the present invention are intended to provide an impact damping device that secures the safety of a passenger as much as possible.

Embodiments of the present invention are also intended to provide a shock-absorbing device capable of reducing damage to a vehicle.

According to an aspect of the present invention, there is provided a shock absorber comprising: a first shock absorbing member having a wing shape for absorbing a second impact from the inside of a bumper or the like for absorbing impact; A connecting member for absorbing a second shock with the first shock-absorbing member and connecting both sides of the first shock-absorbing member to the connecting structure; A second shock-absorbing member disposed between the support member and the first shock-absorbing member, and the connecting member; A support member for supporting the first shock-absorbing member and the second shock-absorbing member inside the bumper or the like; And a shock detection device installed across the bumper and the first shock-absorbing member or the connecting member for effectively sensing the impact.

According to an embodiment of the present invention, there is provided a shock absorber comprising: a first shock absorbing member formed by combining a plurality of plate-like elastic members and including a middle portion and a pair of side portions bent at both sides of the middle portion; A plurality of second shock absorbing members for subsequently moderating an impact transmitted to the first shock absorbing member; A connecting member connecting the pair of side portions; And a support member that engages with the intermediate portion of the first shock absorbing member, wherein the plurality of second shock absorbing members are disposed between the side portion of the first shock absorbing member and the support member, 1 < / RTI > shock-absorbing member.

The plurality of plate-like elastic members may be joined by a joining member or by welding.

The coupling member may be at least one of a U-bolt, a bracket, and a bolt.

When the coupling member is a U-bolt, a seating groove on which the U-bolt is seated may be formed on the first shock-absorbing member.

The connecting member may be in the form of a plate having a plurality of layers.

The plurality of plates may be joined by a joining member or by welding.

The coupling member may be at least one of a U-bolt, a bracket, and a bolt.

When the coupling member is a U-bolt, a seating groove on which the U-bolt is seated may be formed on the coupling member.

The plate-like elastic member may be a leaf spring.

The angle at which the first shock absorbing member is bent may be 90 to 180 degrees.

The angle at which the first shock absorbing member is bent may be 110 to 130 degrees.

The side portion and the connection member may be connected in a rotatable structure at a predetermined angle.

A protrusion may be formed at one side of the side portion and the connection member, and a locking protrusion corresponding to the protrusion may be formed at the other side.

The external impact can be alleviated by the projecting portion and the latching jaw.

The side portion may include a first hinge structure through which a rotation coupling member passes, and the connection member may include a second hinge structure through which the rotation coupling member passes through the center.

The rotationally coupled member may include a bolt.

The second shock absorbing member may include at least one of a coil spring, a hydraulic spring, a leaf spring, an air spring, a shock absorber, a magnetic spring, and a damper.

The second shock mitigation member may include a coil spring and a damper positioned within the coil spring.

Fixing members may be formed at both ends of the coil spring.

The support member may include one or more leaf springs.

The supporting member may be provided with a coupling member for mounting the shock absorber.

The coupling member may be at least one of a U-bolt, a bracket, and a bolt.

The shock-absorbing device may be disposed inside the bumper of the vehicle.

According to the embodiments of the present invention, it is possible to provide an impact damping device capable of absorbing impacts in a multi-stage manner at the time of a collision of the vehicle through a tight connection between the first shock absorbing member and the connecting member.

In addition, according to the embodiments of the present invention, it is possible to provide an impact damping device capable of effectively absorbing impact energy and ensuring the safety of the passenger as much as possible.

In addition, according to the embodiments of the present invention, it is possible to provide an impact damping device capable of effectively absorbing impact energy and reducing the damage of the vehicle to the utmost.

1 is a perspective view of a shock absorber according to an embodiment of the present invention;
2 is a cross-sectional view of a shock absorber according to an embodiment of the present invention.
3 is a cross-sectional view of a second shock absorber according to an embodiment of the present invention
4 is a perspective view showing a connection between a side portion and a connecting member of a first shock absorbing member according to an embodiment of the present invention;

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, this is an exemplary embodiment only and the present invention is not limited thereto.

In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

The technical idea of the present invention is determined by the claims, and the following embodiments are merely a means for efficiently describing the technical idea of the present invention to a person having ordinary skill in the art to which the present invention belongs.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the structure and operation of an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view of a shock absorber 100 according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a shock absorber 100 according to an embodiment of the present invention.

1 and 2, the shock absorber 100 includes a first shock-absorbing member 20 mounted by a support member 50 inside the bumper outer member 10 in the event of an external impact, A safety device such as an airbag is simultaneously operated through the collision sensing device 60 connected to the shock absorber by absorbing impact in multiple stages through the elastic force of the first shock absorber 30 and the second shock absorber 40, Can be improved.

Hereinafter, components of a shock absorber according to an embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in Figs. 1 and 2, the first shock absorbing member 20 is connected to a support member 50 mounted on the front and rear of the vehicle, Can be absorbed.

That is, the first shock absorbing member 20 is attached to the inside of the front and rear bumpers of the vehicle through welding or through coupling members 51 and 52 such as U-bolts, bolts and nuts, The second shock can be absorbed. The first shock absorbing member 20 may be formed by joining a plurality of plate elastic members and includes a middle portion 20a and a pair of side portions 20b and 20c formed by bending at both sides of the intermediate portion 20a. . ≪ / RTI > The plurality of plate-like elastic members can be joined by the engagement member 21 or by welding therebetween. The coupling member 21 may include a U-bolt, a bracket, a bolt, or the like. The plurality of plate-like elastic members constituting the first shock absorbing member 20 are fixed through the engaging member 21, so that the shock absorbing force at the time of external impact can be increased.

The intermediate portion 20a and one side 20b of the side portions 20b and 20c are connected by the first bent portion 20d and the intermediate portion 20a and the other side 20c of the side portions 20b and 20c are connected by the first bent portion 20d. The liver can be connected by the second bent portion 20e. The bending angle between the intermediate portion 20a and the first bent portion 20d and the bending angle between the first bent portion 20d and one side 20b of the side portions 20b and 20c may be 90 to 180 degrees, Preferably 110 to 130 degrees. The same can be applied to the other side 20c of the side portions 20b, 20c.

At this time, the shape of the first shock absorbing member 20 can be changed according to the bumper shape of the vehicle or as necessary. By changing the material, thickness, quantity and shape of the plurality of plate elastic members, It is possible to adjust the shock absorbing force of the shock absorber 20.

In addition, when the U-bolt is adopted as the coupling member 21, a buffering force can be increased by adding a bracket (not shown) or a mounting member (not shown), and a seat in which a part of the U- Since the groove (not shown) is formed on the first shock-absorbing member 20, the fitting state of the engaging member 21 can be further strengthened.

The connecting member 30 is connected between the opposite side portions 20b and 20c of the first shock absorbing member 20. The connecting member 30 and the first shock absorbing member 20 are connected to the bumper outer member 10, And is connected to the first shock absorbing member 20 by a connecting structure to be described later.

The connecting member 30 may include a plurality of leaf springs made of an elastic material and the amount of shock absorption of the connecting member 30 can be adjusted by changing the material, thickness, quantity, shape, and the like of the leaf spring.

The plurality of leaf springs constituting the connecting member 30 can be joined by the joining member 31 or by welding therebetween. The coupling member 31 may include U-bolts, brackets, bolts, and the like. The plurality of leaf springs constituting the connecting member 30 are fixed through the engaging member 31, so that the impact absorbing force can be increased in the case of external impact.

When the U-bolt is adopted as the coupling member 31, it is possible to increase the buffering force by adding a bracket (not shown) or a mounting member (not shown), and a seat where a part of the U- By forming the groove (not shown) on the connecting member 30, the mounting state of the engaging member 31 can be further strengthened.

As shown in Figs. 1 and 2, the portion of the bumper outer tube 10, which receives second impact energy, is not an elastic member having a simple structure but is folded on both sides to form a first shock mitigation member 20 And the connecting member 30 connected thereto, it is possible to improve the dispersion effect and elastic effect of the impact energy at the time of an external impact, and to cope with partial frontal collision and side collision as well as whole frontal collision and rearward collision .

That is, the side portions 20b, 20c corresponding to the wings extended to both sides of the first shock absorbing member 20 have the effect of effectively dispersing the impact upon collision, and the side portions 20b, ), It is possible to increase the elastic effect and to prevent collision between the frontal collision and the rear collision, as well as partial frontal collision with an object such as a column or a telephone pole, or partial collision occurring on the left or right side It is possible to cope effectively.

Between the side portions 20b and 20c of the first shock absorbing member 20 and the supporting member 50 and between the connecting member 30 and the middle portion 20a of the first shock absorbing member 20, The second shock absorbing member 40 may be disposed. The second shock-absorbing member 40 can absorb shocks in a third order following the first shock-absorbing member 20 and the connecting member 30 and can absorb shocks such as coil springs, hydraulic springs, leaf springs, air springs, shock absorbers an absorber, a magnetic spring, and a damper. Therefore, the second shock absorbing member 40 may be one of the elastic constructions, or a plurality of the shock absorbing members 40 may be combined.

In this embodiment, a coil spring and a damper are combined with each other as shown in Fig.

3 is a cross-sectional view of a second shock absorbing member 40 according to one embodiment of the present invention.

3, the second shock-absorbing member 40 includes a coil spring 42 and a damper 43 positioned inside the coil spring 42. A coil spring 42 is disposed at both ends of the coil spring 42, The fixing members 41a and 41b can be formed so that the impact can be mitigated within the predetermined position. The coil spring 42 and the damper 43 may be different in the time to react to the impact and the degree of the shock that can be absorbed. For example, when an impact occurs, the coil spring 42 first reacts, and the impact energy absorbed by the damper 43 can be large. Therefore, the second shock-absorbing member 40 according to the embodiment of the present invention absorbs the impact separately, so that the impact can be more effectively absorbed.

1 and 2, the second shock absorbing member 40 is disposed between the side portions 20b and 20c of the first shock absorbing member 20 and the support member 50, And the intermediate portion 20a of the first shock absorbing member 20 to support the space therebetween and to strengthen the shock absorbing force at the time of external impact.

The support member 50 can absorb the impact in the fourth order following the elastic member 40 and can be connected to the middle portion 20a of the first impact mitigating member 20 through the welding or engaging member 53. [ The support member 50 is formed to have a space inside the bumper of the vehicle and is connected to a back beam (not shown) through a coupling or installation member 51, 52 such as welding or U-bolt, bolt and nut, (Not shown) or a side member (not shown). In addition, the supporting member 50 can be made of one or more leaf springs to further increase the elastic force.

A U-bolt, a bolt, a nut, or the like may be used as the coupling member 53 connecting the support member 50 and the first shock-absorbing member 20.

The collision sensing device for detecting an external impact may be installed in each part of the vehicle as needed and determines whether or not the safety device such as an airbag is operated through the control device according to a value input from the collision sensing device at the time of a collision .

2, the mounting position of the collision sensing device 60 is fixed to the bumper outer part 10 and the first shock absorbing member 20 or the connecting member 30, . This allows the impact sensing device 60 to be operated not only by a simple external impact but also by the shock transmitted through the first shock absorbing member 20 and / or the connecting member 30, The detection can be made more accurate and the safety device can be operated more accurately

4 is a perspective view showing the connection between the side portions 20b and 20c of the first shock absorbing member 20 and the connecting member 30 according to an embodiment of the present invention. 4A and 4B illustrate one side 20b and the connecting member 30 of the side portions 20b and 20c but the other side 20c of the side portions 20b and 20c and the connecting member 30 may be the same have.

Referring to FIG. 4, the side portion 20b and the connecting member 30 may be connected by a hinge structure rotatable at a predetermined angle. For this, the side portion 20b includes a first hinge structure 71 through which a rotation coupling member 75 passes, and the connection member 30 has a second hinge structure 71 through which the rotation coupling member 75 passes, And may include a hinge structure 72. The second hinge structure 72 can be received in the rotation groove 73 formed on both sides of the first hinge structure 71. In other words, the first hinge structure 71 and the second hinge structure 72 can be configured such that the concavo-convex shapes are opposite to each other, and one of the first hinge structure 71 and the second hinge structure 72 is fitted to the other side.

The rotation coupling member 75 may be a bolt and the nut 76 may be fixed to the rotary hinge structure 71 and the second hinge structure 72 such that the rotary hinge structure 71 and the second hinge structure 72 are passed through the rotation coupling member 75 75 < / RTI >

A hook 70a may be formed on the side of the side 20b and a protrusion 70b may be formed on the side of the connecting member 30 corresponding to the hook 70a. The engagement protrusions 70a and the protrusions 70b are formed so that when the connection member 30 and the side portion 20b rotate relative to each other due to an external impact, 70b can be absorbed by the impact. The positions of the engaging protrusions 70a and the protrusions 70b are not limited thereto and protrusions may be formed on the sides of the side portions 20b.

According to an embodiment of the present invention, when an external shock occurs, first, the bumper outer part 10 firstly absorbs the shock at the forefront of the vehicle body, and then the first shock mitigation member 20 and the connecting member 30 It can absorb shocks in a secondary way.

At this time, the expanded wing shape of the first shock absorbing member 20 can more effectively disperse the impact energy. The second shock absorbing portion is connected to the three side portions 20b and 20c corresponding to the two wing portions of the first shock absorbing member 20 and the middle connecting member 30, It is possible to more effectively absorb the shock even in the case of partial frontal collision or lateral collision with an object such as a column or an electric pole, as well as in front and rear collisions of the vehicle.

At this time, the collision sensing apparatus 60 installed over the bumper outer surface portion 10 and the first shock mitigation member 20 or the connecting member 30 can more accurately detect the collision of the vehicle, so that the safety device can be operated.

The second shock absorbing member 40 can absorb shocks in a third order after the second shock absorbing member 20 and the connecting member 30 secondarily absorb the shock. Finally, the support member 50 protects the engine and various devices installed in the hood and engine room by minimizing the impact energy absorbed by the support body 50, while absorbing the impact energy that they did not absorb It is possible to minimize the damage by reducing the damage and securing the safety as much as possible.

The shock absorber 100 according to an embodiment of the present invention is preferably installed in a state where the above-described components are coupled to each other. However, the components of the shock absorber 100 may be separately installed or only part of the components may be detachably attached It is possible.

Although the shock absorber 100 is described as being located inside the bumper of the vehicle in the above description, the shock absorber 100 is not limited to the use of a shock absorber Can be used variously.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, I will understand. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

10: Bumper outer part
20: first shock-absorbing member
20a: Middle part
20b and 20c:
20d, 20e: a first bent portion
21:
30:
31:
40: second shock-absorbing member
41a, 41b:
42: coil spring
43: Damper
50: support member
51, 52:
53:
60: Collision detection device
70a:
70b:
71: First hinge structure
72: second hinge structure
73: Rotary groove
75:
76: Nut
100: Shock Absorber

Claims (23)

A first shock mitigation member formed by combining a plurality of plate-like elastic members and including a middle portion and a pair of side portions bent at both sides of the intermediate portion;
A plurality of second shock absorbing members for subsequently moderating an impact transmitted to the first shock absorbing member;
A connecting member positioned between the pair of side portions and connecting and supporting the pair of side portions; And
And a support member that engages with the intermediate portion of the first shock absorbing member,
Wherein the plurality of second shock absorbing members are disposed between the side portion of the first shock absorbing member and the supporting member and between the connecting member and the middle portion of the first shock absorbing member.
The method according to claim 1,
Wherein the plurality of plate-like elastic members are joined by a joining member or by welding.
The method of claim 2,
Wherein the coupling member is at least one of a U-bolt, a bracket, and a bolt.
The method of claim 3,
Wherein when the coupling member is a U-bolt, a seating groove on which the U-bolt is seated is formed on the first shock-absorbing member.
The method according to claim 1,
Wherein the connecting member has a plurality of plate-like shape.
The method of claim 5,
Wherein said plurality of plates are joined by a joining member or by welding.
The method of claim 6,
Wherein the coupling member is at least one of a U-bolt, a bracket, and a bolt.
The method of claim 7,
Wherein when the coupling member is a U-bolt, a seating groove on which the U-bolt is seated is formed in the coupling member.
The method according to claim 1,
Wherein the plate-like elastic member is a leaf spring.
The method according to claim 1,
Wherein an angle at which the first shock absorbing member is bent is 90 to 180 degrees.
The method of claim 10,
Wherein an angle at which the first shock absorbing member is bent is 110 to 130 degrees.
The method according to claim 1,
Wherein the side portion and the connecting member are connected in a rotatable structure at a predetermined angle.
The method of claim 12,
Wherein a projecting portion is formed at one side of the side portion and the connecting member, and a latching jaw is formed at the other side corresponding to the projecting portion.
14. The method of claim 13,
And the external impact is alleviated by the projecting portion and the engagement jaw.
The method of claim 12,
Wherein the side portion includes a first hinge structure through which a rotary coupling member passes,
Wherein the connecting member includes a second hinge structure through which the rotary coupling member passes at a center.
16. The method of claim 15,
Wherein the rotary coupling member comprises a bolt.
The method according to claim 1,
Wherein the second shock mitigation member comprises at least one of a coil spring, a hydraulic spring, a leaf spring, an air spring, a shock absorber, a magnetic spring, and a damper.
The method according to claim 1,
Wherein the second shock mitigation member comprises a coil spring and a damper positioned within the coil spring.
19. The method of claim 18,
Wherein a fixing member is formed at both ends of the coil spring.
The method according to claim 1,
Wherein the support member comprises at least one leaf spring.
The method of claim 20,
Wherein the support member is provided with a coupling installation member for installing the shock absorber.
23. The method of claim 21,
Wherein the coupling attachment member is at least one of a U-bolt, a bracket, and a bolt.
The method according to any one of claims 1 to 22,
Wherein the shock-absorbing device is disposed inside the bumper of the vehicle.

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