KR101935477B1 - The impact energy absorbing device having a double shock-absorbing structure - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an impact energy absorbing device having a double impact absorbing structure, and more particularly, to a shock absorbing device having a double- And a bending buffer member which is fitted to both ends of the splitters and is bent while one end thereof is curled when being pressed by an impact, the bending buffer member comprising a plurality of first bending pieces And a cutting line is formed in the bending buffer member so as to separate the curled first bending piece so that the bending buffer member is pressed by an external impact to cut the first cut groove, 1 bending piece is formed, and as it is dried, the shock is absorbed, and the bending The second cut groove formed to intersect with the first cut groove is cut and the second bent piece is formed. In addition, the second cut groove is curled while cushioning the impact, thereby doubling the external impact to maximize the buffering efficiency. There is an effect that can be done.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an impact energy absorbing device having a double shock-

The present invention relates to an impact energy absorbing device having a double impact absorbing structure. More particularly, the present invention relates to an impact energy absorbing device having a double impact absorbing structure, The second bending piece is formed while the second bending piece formed to intersect with the first cut groove is cut off and the second bending piece is formed while the curled piece is curled by the continuous pressing so as to buffer the impact again, To an impact energy absorbing device having a double shock absorbing structure capable of absorbing an external impact and maximizing a buffering efficiency.

Generally, at the point where a vehicle collision accident such as a nodal branch point of a road, a pier and an alternation, a tunnel and an underground car entrance, and a front of a tollbooth are concerned, a shock is absorbed when a vehicle collides to absorb impact energy, Various shock absorbing devices such as barrier walls are installed.

Among such conventional shock absorbers, the construction of the concrete wall or the waste tires alone is disadvantageous in that it can not sufficiently absorb shock or impact energy when a vehicle collides.

In addition, there are a plurality of elastic members such as a bellows which are installed on both sides of the conventional shock absorbing device so that the guide rail plate can move and expand and contract inward. However, the elastic member contracted by the collision is expanded by the elastic restoring force There is a disadvantage in that a second impact force is applied to the collision vehicle and a second collision accident is caused by the vehicle repelled by the second impact force.

In addition, a conventional shock absorber comprising a plurality of shield plates which are moved along the rails and a folded-back structure of a link structure mounted between the respective shield plates, or a corrugated pipe having a plurality of holes fixed between the moving shield plates, However, since the assembly structure is complicated and the installation time is long, there is a disadvantage in that efficiency is deteriorated in terms of productivity and assembling workability.

In addition, since the elastic member, the folding bar, the corrugated pipe, etc., which are components of the conventional shock absorbing device, are large in size and high in installation cost, the efficiency of installing components that are damaged after a vehicle collision is significantly reduced have.

As a result of intensive researches on impact energy absorbing devices as described in Korean Patent Application No. 20-2010-0012527, the present applicant has found that the shock absorbing efficiency and cost are low as in the present invention, The impact energy absorbing device has been developed.

However, in the conventional shock absorber, since the cutting body that absorbs impact absorbs the impact due to bending while curling at only one end thereof, there is a limit in the amount of shock absorption, so that it is difficult to absorb shocks normally so as to absorb shock. There is a problem that this is threatened.

The above-mentioned invention means the background art of the technical field to which the present invention belongs, and does not mean the prior art.

The present invention has been conceived to solve the above-described problems, and an object of the present invention is to provide a bending cushioning device in which a first bending piece is formed while a first bending groove is cut while a bending buffer member is pressed by an external impact, The second bending piece is formed while the second bending piece formed to intersect with the first cut groove is cut off and the second bending piece is formed while the curled piece is curled by the continuous pressing so as to buffer the impact again, And it is an object of the present invention to provide an impact energy absorbing device having a double shock absorbing structure capable of absorbing an external impact and maximizing the buffering efficiency.

The present invention relates to a shock absorber comprising a wire portion mounted inside an impact absorbing member so as to absorb impact when a vehicle is hit, a splitter fitted in the wire portion, and a wire portion fitted in both ends of the wire portion, The bending shock absorber according to claim 1, wherein the bending buffer member is provided with a first cutout groove radially formed at one end thereof to form a plurality of first bending pieces so that the bending buffer member is pressed when pressed, And a perforated line is formed so that the first bent piece is separated.

A second cutout groove is formed radially below the bending buffer member to form a second bent piece so as to intersect with the first bent piece. The first bent piece is curled and separated by the perforated line, And the second cut-out groove is curled while being dried.

The upper portion of the bending buffer member may further include an upper perforation line so that one end of the upper perforation line is connected to the first cutout groove.

In addition, a lower cutout groove may be formed in the lower portion of the bending buffer member so that one end is connected to the second cutout groove.

A reinforcing protrusion is formed on the inner side surface of the first bending piece, and a bending groove is formed in the reinforcing protrusion.

In addition, an annular buffer ring is formed on the outer surface of the bending buffer member at regular intervals along the longitudinal direction, a guide slope is formed at one end of the buffer ring, and an elastic band is further provided inside the buffer ring .

In addition, the bending buffer member may be formed with buffer protrusions radially extending along the longitudinal direction on the outer surface thereof. The buffer protrusions are formed with fastening holes, and the elastic fastening bands are fastened by connecting the fastening holes.

The bending buffer member may be provided with an elastic tube portion through which the wire is inserted so as to penetrate therethrough. The elastic tube portion is radially fixed to the lower portion of the elastic connecting wires, and the upper portion of the elastic connecting wire is fixed to the inner side of the bending buffer member And is fixed to the side surface.

In the impact energy absorbing device having the double impact absorbing structure of the present invention, the bending buffer member is pressed by the external impact, the first cut groove is cut off, the first bent piece is formed, and the impact is absorbed by drying, The second bending piece is formed while cutting the curled bent piece by the perforated line and the second cut groove formed to intersect with the first cut groove is cut off and the second bending piece is formed and the curled impact is buffered again to double the external impact, The efficiency can be maximized.

1 is a cross-sectional view showing an impact energy absorbing device having a double impact absorbing structure according to the present invention.
2 is a perspective view showing an impact energy absorbing device having a double impact absorbing structure according to the present invention.
FIGS. 3 to 5 are views showing an operation state of an impact energy absorbing apparatus having a double shock absorbing structure according to the present invention.
6 is a view showing another embodiment of an impact energy absorbing device having a double shock absorbing structure according to the present invention.
7 is a view showing another embodiment of an impact energy absorbing device having a double shock absorbing structure according to the present invention.
8 is a view showing another embodiment of an impact energy absorbing device having a double shock absorbing structure according to the present invention.
9 is a view showing still another embodiment of an impact energy absorbing device having a double shock absorbing structure according to the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of an impact energy absorbing device having a double shock absorbing structure according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

In addition, the following embodiments are not intended to limit the scope of the present invention, but merely as an example, and various embodiments may be implemented through the present invention.

FIG. 2 is a perspective view showing an impact energy absorbing device having a double shock absorbing structure according to the present invention, and FIGS. 3 to 5 are perspective views showing the impact energy absorbing device having a double impact absorbing structure according to the present invention. 5 is a view showing another embodiment of an impact energy absorbing device having a double shock absorbing structure according to the present invention, and Fig. 7 8 is a view showing still another embodiment of an impact energy absorbing apparatus having a double impact absorbing structure according to the present invention, and FIG. 8 is a view showing still another embodiment of the impact energy absorbing apparatus having a double impact absorbing structure according to the present invention And Fig. 9 is a view showing another embodiment of the impact energy absorbing device having the double shock absorbing structure according to the present invention.

As shown in the drawings, an impact energy absorbing device 10 (hereinafter referred to as an impact energy absorbing device for convenience of explanation) having a double shock absorbing structure according to the present invention is constructed so as to absorb an impact A wire portion 20 fitted to the wire portion 20 and a splitter 30 fitted to the wire portion 20. The wire portion 20 is inserted into both ends of the wire portion 20, And a bending buffer member 40. The bending buffer member 40 is an impact energy absorbing device that absorbs impact caused by a collision of the vehicle so that a part of the bending buffer member 40 is dried and cushioned.

Here, the wire 20 and the splitter 30 are well known in the art, and the bending buffer member 40, which is fastened to the wire 20 to buffer the impact, is a major constituent of the present invention.

The bending buffer member 40 of the impact energy absorbing device 10 is provided with a first cutout groove 42 radially formed at one end thereof to form a plurality of first bending pieces 41 so that the first bending piece 41 is formed when the bending buffer member 40 is pressed, A perforated line 43 is formed at an intermediate portion of the bending buffer member to separate the first bent piece 41 that has been cut.

That is, when the bending buffer member 40 is pressed in the direction of the arrow by the impact, the end portions of the bending buffer members 40 abutting the bending buffer member push the curved protruding portions 31 formed on both sides of the splitter 30, The first bending piece 41 is formed while being continuously pressed along the curved surface of the splitter 30 so that the first bending piece 41 is curled as it is curled, . The protrusion 31 is formed in a conical shape as shown in the drawing, and the diameter of the protrusion 31 is preferably larger than the inner diameter of the bending buffer member 40 formed in a circular tube shape.

One end of the bending buffer member 40 on which the first cutout groove 42 is formed is disposed in a state of being fitted in a curved protrusion 31 formed on both sides of the splitter 30, The protruding portion 31 of the splitter 30 sequentially presses the protruding portion 31 of the splitter 30 while expanding the end portion of the bending buffer member 40 or the protruding portion 31 of the splitter 30 expands the end portion of the bump buffer member 40, The first bending pieces 41 are formed while being cut in the direction in which the first cutout grooves 42 are pressed, and the first bending pieces 41 are dried, thereby buffering the pressure due to the impact.

A perforated line 43 is further formed in the middle portion of the bending buffer member 40 so that the curled first bending piece 41 is cut and separated by the perforated line 43 by the pressure applied by the continuous impact.

A second cutout groove 45 is formed in a lower portion of the bending buffer member 40 so as to intersect with the first cutout groove 42 so as to form a second bent piece 44 so as to intersect with the first bent piece 42. [ The end of the bending buffer member 40 cut by the continuous pressing by the impact after the first bending piece 41 is cut by the perforated line 43 is expanded to the protruding portion, And the second cutout groove 44 is cut.

That is, after the first bending piece 41 is curled and separated by the perforated line 43, the second bending piece 44 is formed while the second cutout groove 45 is cut by the continuous pressurization, The second bending piece 44 is guided and guided by the projecting portion 31, so that the pressure can be buffered.

At this time, the first cutout groove 42 and the second cutout groove 45 are formed to intersect with each other. After the first bent piece 41 is separated by the perforated line 43, the second cutout portion 42 The buffering force due to the impact can be improved, and the end portion of the second cutout groove 45 is arranged to abut the perforation line.

An upper perforation line 46 is further formed on the upper portion of the bending buffer member 40 along the longitudinal direction of the bending buffer member 40 so that one end of the bending buffer member 40 is connected to the first cutout groove 42, A lower cutout groove 47 is formed along the longitudinal direction of the bending buffer member 40 so that one end is connected to the second cutout groove 45.

That is, as described above, when the pressing is performed due to the impact, the first and second cutout grooves 42 and 45 are cut, and the upper cutout line is connected to the first and second cutout grooves 42 and 45 This prevents the first and second bending pieces 41 and 44 from being curled. In addition, since the first and second bending pieces 41 and 44 are not curled to have irregular directionality, .

A reinforcing protrusion 48 is formed on an inner surface of the first bending piece 41 and a reinforcing protrusion 48 is formed at a predetermined interval.

The first bending piece 41 is curled to resist the reinforcing protrusion 48 so that the buffering force can be improved and the area of contact with the splitter 30 is reduced so that it is not caught and is not curled And the bent grooves 49 are formed at regular intervals to maintain the constant resistance by the reinforcing protrusions 48 and to prevent the reinforcing protrusions 48 from being curled by the reinforcing protrusions 48.

It is preferable that the reinforcing protrusion 48 and the bending groove 49 are formed in the second bending piece.

7, an annular buffer ring 50 is integrally formed on the outer surface of the bending buffer member 40 at predetermined intervals along the longitudinal direction, and one end of the buffer ring 50 is provided with a guide inclined surface The buffer ring 50 is sequentially cut out to buffer the shock, while the buffer ring 50 is made of synthetic resin or synthetic fiber material having elasticity, The elastic band 52 is further pulled by the elastic band 52 when the elastic band 52 is cut by the impact, and the elastic band 52 is continuously stretched or broken as the cut is progressed.

Referring to FIG. 8, the bending buffer member 40 is provided with buffer bosses 60 radially extending along the longitudinal direction on the outer surface thereof. The buffer bosses 60 are formed with fastening holes 61, The elastic connecting band 62 is coupled with the elastic bands 62 and the elastic bands 62 are connected to the elastic bands 62 so that the impact bending protrusions 60 are bent when the shocks are cut, ), And the shock is absorbed again by the elasticity.

9, the bending buffer member 40 is provided with an elastic tube portion 70 through which the wire 20 is inserted, and the elastic tube portion 70 is formed of a synthetic resin material The upper part of the elastic connecting line 71 is fused and fixed to the inner surface of the bending buffer member so that the bending buffer member 40 is cut and cut by the impact, When the elastic connecting line 71 is bent, the elastic connecting line 71 is cushioned by the elasticity of the elastic connecting line 71, and the elastic connecting line 71 is continuously stretched and broken during the bending process. The elastic tube portion 70 cushions the shock and protects the wire portion.

10: impact energy absorbing device 20: wire part
30: Splitter 40: Bending buffer member
50: buffer ring 60: buffering projection
70: elastic tube
31:
41: first bending piece 42: first cutout groove
43: perforated line 44: second bending piece
45: second cutout groove 46: upper perforation line
47: lower cutting groove 48: reinforcing projection
49: Bending groove
51: guide slope 52: elastic band
61: fastening hole 62: elastic connecting band
71: Elastic connector

Claims (8)

A wire portion provided inside the impact absorbing member so as to absorb an impact upon collision of the vehicle, a splitter fitted in the wire portion, and a wire portion fitted in the wire portion, the wire portion being inserted into both ends of the splitter, A shock absorber comprising a bending buffer member,
The bending buffer member is provided with a first cutout groove radially formed at one end thereof so as to form a plurality of first bent pieces so that the bending cushion member can be rotated when pressed,
A perforated line is formed in the bending buffer member so as to separate the first bent piece,
Wherein a reinforcing protrusion is formed on an inner side surface of the first bending piece, and a bending groove is further formed in the reinforcing protrusion to maintain a predetermined gap therebetween.
The method according to claim 1,
A second cutout groove is formed radially below the bending buffer member so as to form a second bent piece so as to intersect with the first bent piece, the first bent piece is curled and separated by the perforated line, 2 < / RTI > cut grooves are curled as they are dried.
The method according to claim 1,
And an upper perforation line is formed at an upper portion of the bending buffer member so that one end of the upper bending line is connected to the first cutout groove.
3. The method of claim 2,
And a lower cutout groove is further formed in a lower portion of the bending buffer member such that one end is connected to the second cutout groove.
delete The method according to claim 1,
The bending buffer member is formed with an annular buffer ring on its outer surface at regular intervals along the longitudinal direction, a guide slope is formed at one end of the buffer ring, and an elastic band is further provided inside the buffer ring. The impact energy absorbing structure having a double shock absorbing structure.
The method according to claim 1,
Wherein the bending buffer member is formed with buffer bumps extending radially in the longitudinal direction along the length of the bending buffer member and a coupling hole is formed in the buffer bumps and the elastic coupling band is coupled with the coupling holes. The impact energy absorbing device comprising:
The method according to claim 1,
Wherein the bending buffer member is provided with an elastic tube portion through which the wire is inserted so as to penetrate therethrough, and the elastic tube portion has a lower portion of the elastic connecting wires radially fixed to the outer surface thereof, and an upper portion of the elastic connecting portion is fixed to the inner surface of the bending buffer member Wherein the shock absorbing structure has a double shock absorbing structure.

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