KR102074717B1 - Truck Mounted Attenuator - Google Patents

Abstract

The present invention relates to a shock absorber attached to a work vehicle, which can absorb a shock applied to a colliding vehicle and protect a driver when the vehicle collides with the rear of the work vehicle working on a construction site or a road. The present invention shock provides the absorber attached to a work vehicle which can provide an excellent shock absorbing function, at the same time, protect driver′s safety as much as possible, and meet the standards of domestic road safety facility installation and management guidelines by implementing a new type of shock absorber that disperses and absorbs shocks in the event of a vehicle collision by combining a pad pressed by the shocks, a corrugated plate folded by the shocks, and a pipe deformed by the shocks.

Description

Truck-mounted shock absorber {Truck Mounted Attenuator}

The present invention relates to a shock absorber attached to the work vehicle, and more particularly, when the vehicle collides with the rear of the working vehicle at the construction site or on the road, the shock applied to the colliding vehicle can be absorbed and the driver can be protected. The present invention relates to a vehicle-mounted shock absorber.

Recently, there is a growing demand for road maintenance, such as bridge repairs, accident handling, road and median cleaning, road repairs, and the like. have.

In view of this, countermeasures using a truck-mounted shock absorber have been proposed, and these work-carrying shock absorbers control lanes for the maintenance of roads and structures. It is a safety device to reduce the damage caused by the collision of approaching vehicles.

In particular, in foreign countries, mandatory use of an impact absorbing device attached to a vehicle for maintenance of roads is mandatory, and in this regard, installation of a shock absorbing device is also required in Korea.

For example, a large work vehicle, such as a truck, is not only heavier in weight and size than a passenger car, but also has a higher vehicle height, so that a car may intrude into the lower part of the work vehicle and cause a lot of casualties in a collision with the car. For this reason, it is mandatory to install a shock absorbing device to prevent a collided passenger car from invading and spreading underneath the vehicle body of a large work vehicle (domestic regulation is 8 tons or more).

In other words, in recent years, the road safety facility installation and management guidelines have raised the standard of the work vehicle-mounted shock absorber (TMA) to improve the safety of construction sections. It is becoming.

Conventional work vehicle-mounted shock absorbing device is a Republic of Korea Patent No. 10-0902984 "truck mounting shock absorbing facility", Republic of Korea Patent No. 10-1252508 "trailer with a shock absorbing device", Republic of Korea Patent No. 10 Various types have been disclosed, such as a truck-mounted shock absorber having an air pipe and a plurality of hollow parts, and Korean Patent No. 10-0866383, a crash energy absorber and a rail vehicle having the same.

However, the conventional vehicle-mounted shock absorbers have a problem that the function is degraded due to the change of physical properties over time using plastic or rubber material, the inefficient problem of using more materials than the energy dissipation mechanism is unclear, impact Due to the high cost of the absorber, there is a problem in that it is difficult to disseminate.

Republic of Korea Patent No. 10-0902984 Republic of Korea Patent No. 10-1252508 Republic of Korea Patent No. 10-1203108 Republic of Korea Patent No. 10-0866383 Republic of Korea Patent No. 10-1666139

Accordingly, the present invention has been devised in view of the above, and is a novel method of combining and absorbing a shock in a vehicle crash by combining a pad pressed by an impact, a corrugated plate folded by an impact, a pipe deformed by an impact, and the like. By implementing a shock absorber in the form of a shock absorber, it is possible to provide excellent shock absorbing function and to protect the driver's safety as much as possible and to meet the standards of domestic road safety facility installation and management guidelines. The purpose is to provide.

Working vehicle-mounted shock absorbing device provided by the present invention in order to achieve the above object has the following features.

The work vehicle-mounted shock absorbing device maintains a predetermined distance from each other and is arranged side by side in the front and rear directions of the vehicle, and is disposed side by side in the front and rear directions of the vehicle, the middle plate and the rear plate installed at the rear of the vehicle. And a plurality of pipes installed in both structures between the front plate and the rear plate while penetrating the middle plate and arranged side by side along the front and rear directions of the vehicle, between the front plate and the middle plate, and between the middle plate and the rear plate. It consists of a structure including a plurality of corrugated plate installed in a structure that is supported at both ends.

Accordingly, the work vehicle-mounted shock absorbing device is characterized in that the vehicle is deformed and absorbed while the corrugated plate is folded and deformed by the impact applied from the front when the vehicle collides.

In addition, the vehicle-mounted impact absorbing device further includes a cover for accommodating the pipe and the corrugated plate to the inside and covering the upper and both side portions of the front plate, the middle plate and the rear plate to prevent the debris from spreading to the outside. can do.

At this time, the cover is fastened to the plate side through a plurality of slit side by side along the length of the cover is slidable in the vehicle front and rear direction, and the upper plate of the cover and the vertical plate inward to the distance between the front plate and the middle plate A cover flange having a relatively short length is formed so that when the vehicle collides, the cover is pushed toward the rear of the vehicle so that the shock can be absorbed as the cover flange starts to deform when the cover flange is caught by the intermediate plate.

Here, the corrugated plate may be configured as a horizontal corrugated plate while being laid horizontally while being disposed between the vertical corrugated plate of both vertically and the vertical corrugated plate.

The corrugated plate is supported by a plurality of corrugated plate support bars which are supported across both vertical corrugated plates and support the bottom and the upper surface of the horizontal corrugated plate so that the vertical corrugated plate and the horizontal corrugated plate can be folded in a straight line. It may further include.

In particular, the vehicle-mounted impact absorbing device may further include a guide bar which is disposed across the inside of the pipe and is supported between both the front plate and the rear plate while guiding the rear movement of the pressing block.

In addition, the pipe further includes a pressure block fitted to the front end portion, the pipe end is inserted into the pipe in the pipe longitudinal direction at a predetermined depth and at a predetermined interval in the pipe circumferential direction at the leading end of the pipe is inserted into the pipe deformation A plurality of incision grooves may be formed.

In a preferred embodiment, the inner side of the front plate may be provided with a shock absorbing pad that serves to absorb the primary shock, and in the case of the pipe is made of a stepped pipe of different stages of different diameters In this case, each stage is characterized in that the one located in the front side of the vehicle has the smallest diameter and the one located in the rear side has a relatively large diameter.

In a preferred embodiment, the vehicle-mounted shock absorbing device has a washer nut coupled to a rear end screw portion of the guide bar, and is fitted around the rear end portion of the guide bar and between the rear plate and the washer nut. It may further include a spring that is supported while the spring tightening tight binding function.

The vehicle-mounted shock absorbing device provided by the present invention has the following effects.

First, by applying a new shock absorbing device that combines a pad that is absorbed by the shock and absorbs the shock, a corrugated plate that is folded by the shock, and a pipe that is deformed by the shock and absorbs the shock. It is able to exert the excellent shock absorbing function by dispersing and absorbing the impact generated in a complex way, to protect the driver's safety as much as possible, and to meet the standards of domestic road safety facility installation and management guidelines.

Second, by applying the washer nut and spring as a means to compensate for the play of each part caused by the vibration of the vehicle, it is possible to maintain the tight binding state between the parts even when the washer nut is loosened. It has the effect of blocking and preventing the degradation in advance.

Third, by combining the horizontal corrugated plate disposed in the horizontal direction and the vertical corrugated plate disposed in the vertical direction, it is effective to effectively absorb and disperse the impact applied from the front, and also the horizontal corrugated plate and the vertical corrugated plate in the vertical direction Or by adopting a plurality of corrugated plate support bar to be folded along the correct straight trajectory while preventing the bending in the left and right direction, there is an effect that can secure the cushioning function of the horizontal corrugated plate and the vertical corrugated plate.

Fourth, by applying a cover that blocks the upper and both side portions of the shock absorbing device, it is possible to trap the debris spread in all directions during the collision inward, thereby preventing the secondary damage caused by the debris.

1 to 3 is a perspective view showing a vehicle-mounted shock absorbing device according to an embodiment of the present invention
4 to 6 is a cross-sectional view showing a shock absorber attached to the work vehicle according to an embodiment of the present invention.
7 and 8 are perspective views illustrating a coupling relationship between a pipe, a guide bar, a washer nut and a spring in a vehicle-mounted shock absorber according to an embodiment of the present invention.
Fig. 9 is a side view showing the state of a vehicle-mounted shock absorbing device before and after a vehicle collision;

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

1 to 3 is a perspective view showing a shock absorber attached to a vehicle according to an embodiment of the present invention, Figures 4 to 6 is a cross-sectional view showing the impact absorber attached to a vehicle according to an embodiment of the present invention. to be.

1 to 6, the work vehicle attached shock absorbing device is installed at the rear of a working vehicle such as a truck or a large vehicle in operation such as a trailer to effectively prevent a shock generated when colliding with an opponent vehicle. It is made of a structure that absorbs and reduces.

To this end, the vehicle-mounted shock absorbing device is a front plate 10, the intermediate plate 11 which is arranged side by side along the front and rear direction of the vehicle while maintaining a vertical distance with each other, while taking a vertical position. ) And back plate 12.

The front plate 10, the middle plate 11 and the rear plate 12 is in the form of a square plate, the front plate 10 is a plate in direct contact with the opponent vehicle in the event of a vehicle crash, the middle plate 11 is It is a plate which supports the pipe 13 installed in the inside, the corrugation board 14, etc., and the rear plate 12 is a plate connected to the work vehicle side.

Here, the front plate 10, the middle plate 11 and the rear plate 12 is fastened to the cover 15 to be described later and the pipe 13 and the corrugated plate 14 to be described later to form an integrated structure. It can be achieved.

Here, the rear plate 12 is provided with two brackets 25 extending to the rear, and thus the bracket 25 is fastened to the rear frame (not shown) of the work vehicle, thereby the front plate 10 The intermediate plate 11 and the rear plate 12 as a whole can be installed in a structure supported on the work vehicle side.

In addition, the vehicle-mounted impact absorbing device includes a pipe 13 as a means for absorbing and reducing the impact with the corrugated plate (14).

The pipe 13 is a circular pipe, which is horizontally arranged side by side in the front and rear direction of the vehicle and penetrates the intermediate plate 11 and is installed in a structure that is supported between both ends between the front plate 10 and the rear plate 12. do.

For example, the front end of the pipe 13 is inserted into and supported by the pressing block 18 installed on the rear of the front plate 10, and the rear end of the pipe holder 26 is installed on the front of the rear plate 12. It can be installed in a structure that is supported by being screwed through.

In this case, the middle part of the length of the pipe 13 penetrates the intermediate plate 11 and can be supported by being fitted to the guide bush 27 installed at the pipe through portion of the intermediate plate 11.

Here, the pipe 13 may be formed in plural, and the present invention provides an example in which four pipes 13 are disposed on the top, bottom, left, and right sides in a rectangular lattice form to balance and absorb shocks. .

In particular, the tip of the pipe 13, that is, the tip of the pipe 13 to which the pressing block 18 is fitted, a plurality of cutout grooves that are torn at a predetermined depth in the longitudinal direction of the pipe and arranged at regular intervals in the circumferential direction of the pipe ( 19) is formed.

Accordingly, when the pressure block 18 moves backward while pushing the pipe 13 when the vehicle collides, the pipe 13 at this time has a cutout groove 19 by the pushing force of the pressure block 18. From the point of view to the long tearing to the rear, it is bent in several branches and dried, eventually the shock can be absorbed and reduced by the deformation of this pipe (13).

In addition, the pipe 13 may be formed of a stepped pipe of several stages having different diameters.

For example, the pipe 13 may be made of a multi-stage stepped pipe composed of pipes of a larger diameter step by step from the front to the rear along the pipe length direction.

In such a stepped pipe 13, the tube of the first end having the smallest diameter is located toward the front of the vehicle, and the tube of the second, third, ... This can be located.

As a result, the small diameter pipe is easily and flexibly deformed at the beginning of the vehicle collision, so that most of the shocks are smoothly absorbed and reduced, thereby reducing damage to the driver. Will be.

Subsequently, as the end of the vehicle crashes, the pipe of the stage having a larger diameter is gradually hardened toward the end of the vehicle, so that the remaining shock is absorbed and reduced, thereby minimizing the damage to the vehicle as well as the driver of the vehicle.

As another example, in the case of the pipe 13, a predetermined length of the front end positioned in the front of the vehicle is made of a relatively thin tube, and the remaining lengths of the middle and rear ends positioned in the rear of the vehicle are relatively thick. It can be made of a tube.

As a result, when a vehicle collides, a thin tube is easily and flexibly deformed at an early stage, so that most of the shock is softly absorbed and reduced, thereby reducing damage to the driver. .

Subsequently, the thick pipe is gradually hardly deformed toward the end of the vehicle crash, and thus the remaining shock is absorbed and reduced, thereby minimizing the damage to the vehicle and the like.

In addition, the vehicle-mounted impact absorbing device includes a corrugated plate 14 as a means for absorbing and reducing the impact with the pipe (13).

The corrugated plate 14 is a corrugated plate formed by bending an elongated square iron plate in a zigzag form, and is disposed side by side along the front and rear directions of the vehicle, between the front plate 10 and the middle plate 11, and the middle plate 11. It is installed in a structure that is supported both ends between the rear plate (12).

The corrugated plate 14 is composed of both vertical corrugated boards 14a, which are erected vertically, and horizontal corrugated boards 14b, which are disposed between the vertical corrugated boards 14a and lying horizontally.

As an example, a total of four vertical corrugated plates 14a may be disposed between the front plate 10 and the middle plate 11 and a pair may be disposed between the middle plate 11 and the rear plate 12. A total of two horizontal corrugated plates 14b are disposed between the front plate 10 and the middle plate 11 and one is disposed between the middle plate 11 and the rear plate 12. It becomes possible.

Here, the vertical corrugated plate 14a is positioned inside the pipe 13 while taking a vertical posture, and the front end portion and the rear end portion in the longitudinal direction (wrinkle direction) are respectively the front plate 10, the intermediate plate 11, and the middle. The plate 11 and the rear plate 12 are fixedly installed in a screw or bolt fastening structure, and the horizontal corrugated plate 14b is positioned inside the vertical corrugated plate 14a on both sides while taking a horizontal position, and in the longitudinal direction. The front end and the rear end of the (wrinkling direction) are fixedly installed to the front plate 10, the intermediate plate 11, the intermediate plate 11, and the rear plate 12 by screw or bolt fastening structures, respectively.

Accordingly, when the front plate 10 is pushed to the rear during the vehicle crash, the force of the front plate 10 is pushed into the corrugated plate 14, that is, the vertical corrugated plate 14a and the horizontal corrugated plate 14b at this time. By the folding deformation of the corrugated plate 14, the impact can be absorbed and reduced.

In particular, the corrugated plate 14 includes a plurality of corrugated plate support bars 16 as a means to prevent the corrugated plate 14 from being bent or unfolded without being folded when the corrugated plate is folded.

The corrugated plate support bar 16 is horizontally supported between both vertical corrugated plates 14a and is installed to support the bottom surface of the horizontal corrugated board 14b, while the vertical corrugated board 14a and the horizontal corrugated board It serves to guide this so that 14b can be folded in a straight line.

For example, the corrugated plate support bar 16 is horizontally arranged side by side along the left and right width directions of the shock absorbing device together with the bar brackets 28 fixed to both side ends of the horizontal corrugated plate 14b. In the state, the corrugated plate support bar 16 supports the bottom and the upper surface of the horizontal corrugated plate 16b and penetrates the vertical members at both ends of the bar bracket 28. In this state, the corrugated plate support bar 16 Washers with a washer and a spring are mounted on both ends of the bottom end, i.e., both ends located outside the vertical corrugating plate 14a.

Therefore, the corrugated plate support bar 16 is integrally bound with the vertical corrugated plate 14a and the horizontal corrugated board 14b, and the vertical corrugated board 14a is unfolded from side to side or the horizontal corrugated board 14b is up and down. It is possible to hold the bent, and eventually the vertical corrugated plate 14a and the horizontal corrugated plate 14b are normally folded along a straight line due to the impact at the time of collision, so that the cushioning function can be sufficiently exhibited.

In addition, the vehicle-mounted impact absorbing device includes a cover 15 as a means for blocking the spread of debris generated during the collision while preventing the external exposure of the pipe 13, corrugated plate 14, etc. to the outside. do.

The cover 15 is formed by combining several plates divided in the width direction with each other to have an approximately "c" shaped cross section.

The cover 15 accommodates the pipe 13 and the corrugated plate 14, etc., and covers the upper and both side portions of the front plate 10, the middle plate 11 and the rear plate 12, Subsequently, screws are fastened to the upper and side ends of the front plate 10, the middle plate 11, and the rear plate 12 at the upper and side portions of the cover 15, so that the cover 15 is the front plate 10. ), The intermediate plate 11 and the rear plate 12 can be installed in a structure supported.

In addition, the cover 15 includes a plurality of slits 21 arranged side by side in the longitudinal direction of the cover, and through the slits 21 at the front plate 10, the middle plate 11, and the rear plate 12. The cover 15 may be supported by the screw to be fastened, and at the same time, the cover 15 may be slidable in the front and rear direction of the vehicle by a section allowed by the slit length.

In particular, the upper plate of the cover 15 is vertically bent inward and has a relatively short length relative to the distance between the front plate 10 and the intermediate plate 11 (or the intermediate plate 11 and the rear plate 12). Cover flanges 22 having are formed at the front and rear two positions, respectively.

Accordingly, when the vehicle collides, the cover 15 is pushed toward the rear of the vehicle and starts to deform from the point at which each cover flange 22 of the cover 15 is engaged with the intermediate plate 11 and the rear plate 12, respectively. The shock can be absorbed.

In addition, the vehicle-mounted shock absorbing device includes a buffer pad 20 as a means for absorbing and reducing shock while exhibiting its own compression characteristics.

The buffer pad 20 has a rectangular block shape and is provided with a structure accommodated inside the front plate 10.

Accordingly, when the shock is applied to the front plate 10, the shock absorbing pad 20 installed inside the front plate 10 may first absorb and reduce the shock at this time. Since the shock absorbing pad 20 is initially absorbed and reduced by a considerable amount, the shock absorbing device can increase the overall shock absorbing performance.

Here, the buffer pad 20 may be applied to a rubber material, a silicon material, a styrofoam material and the like.

7 and 8 are perspective views illustrating a coupling relationship between a pipe, a guide bar, a washer nut and a spring in a vehicle-mounted shock absorber according to an embodiment of the present invention.

As shown in Figs. 7 and 8, the pressure block 18 for inducing pipe deformation, the guide bar 17 for guiding the rear movement of the pressure block 18, and the fastening state of the parts are always tight. The coupling relationship between the washer nut 23 and the spring 24 is to be maintained.

The pressing block 18 is a cylindrical block having a hole penetrating along the central axis, and is made of an integral type of the head portion 18a and the insertion portion 18b.

The pressing block 18 is fitted to the distal end of the pipe 13 by using an insertion portion 18b having a smaller diameter than the pipe inner diameter, and uses a head portion 18a having a larger diameter than the pipe outer diameter. It is installed in a structure that is fastened to the rear portion of the front plate (10).

At this time, the guide bar 17 to be described later may pass through the hole formed along the central axis of the pressing block 18.

Accordingly, the pressing block 18 is able to dig into the inside of the pipe 13 along the pipe length direction through the insertion portion 18b while being pushed backward with the front plate 10 during the vehicle collision. As a result, the deformation of the pipe 13 is induced by the push of the pressure block 18 so that a buffering action can be achieved through the pipe 13.

The guide bar 17 is in the form of a circular cross-section bar having threads at the front end and the rear end, and the guide bar 17 is disposed across the inside of the pipe 13 along the axial direction, and the guide bar is thus disposed. The front end portion (17), that is, the front end portion extending outward through the front plate 10 while exiting the hole of the pressing block 18 is fastened to the nut member of the front plate 10 and at the same time the rear end portion, That is, after passing through the pipe holder 26 and the rear plate 12, the spring 24 and the washer nut 23 are fastened to the rear end of the rear plate 12.

The guide bar 17 is installed in a structure that is supported at both ends between the front plate 10 side and the rear plate 12 side, the guide bar 17 is installed in this way when the rear movement of the pressure block 18 You will be guided.

That is, the pressing block 18 is pushed back in the state of being fitted by the guide bar 17, so that the pressing block 18 can be accurately moved straight along the guide bar 17, and eventually By securing the linear trajectory of the block 18 for pressurization, the deformation of the pipe 13 can be induced more effectively.

The washer nut 23 is a nut which is fastened to fix the guide bar 17 to the rear plate 12 side, and is fastened to a screw thread formed at the rear end of the guide bar 17. The 24 is fitted around the rear end of the guide bar 17 and is installed in a structure that is supported at both ends between the rear plate 12 and the washer nut 23.

Here, the washer nut 23 may be a separate washer and nut.

Therefore, when vibration is frequently applied to the shock absorbing device side due to the vibration of the vehicle itself or irregular road surface, a nut with a washer 23 or a pleat that is fastened to a nut fastening part of each part, for example, a guide bar 17 The washer nut (not shown) fastened to the plate support bar 16 side can be loosened. At this time, the spring 24 exerts its own elasticity so that the washer nut 23 is loose. As a result, the guide bar 17 and the like can maintain a tight engagement state at all times, so that even when the washer nut is loosened, a tight engagement state between the parts can be maintained. Can be blocked and prevented the functional degradation in advance.

Fig. 9 is a side view showing the state of a vehicle-mounted impact absorbing device before and after a vehicle collision.

As shown in FIG. 9, when the vehicle collides with the rear of the working vehicle on the road, the front plate 10 is pushed to the rear by the vehicle, and together with the pressure block on the front plate 10 side. (18) Also, as the pipe 13 is deformed and pushed inward, the pipe 13 is deformed, that is, the pipe 13 is torn into pieces so that the shock at this time can be absorbed and reduced. do.

At the same time, the vertical corrugated board 14a and the horizontal corrugated board 14b in the front are also folded flatly by the front plate 10 that is pushed backward, so that the impact at this time can be absorbed and reduced.

In addition, the cover 15 is also deformed after being pushed back a predetermined distance to be able to absorb and reduce the impact at this time.

The ongoing impact causes the front plate 10 and the intermediate plate 11 to be pushed back together, and the pipe 13 at the back continues to deform, thereby absorbing and reducing the impact at this time. At the same time, the rear and rear plates 10 and 11 are pushed to the rear, so that the rear vertical corrugated board 14a and the horizontal corrugated board 14b can also be folded flatly to absorb and reduce the impact at this time.

By effectively absorbing and reducing the impact generated during the collision of the vehicle by using the deformation of the pipe 13 and the deformation of the corrugated plate 14, the damage caused by the collision of the vehicle can be minimized, and the safety of the driver and the passenger vehicle. You can get as much as possible.

As described above, the present invention provides a new shock absorbing device which is installed at the rear of the work vehicle on the construction site or on the road to provide a composite shock absorbing device that absorbs the impact of the collision of the vehicle. At the same time, the damage of vehicle damage can be minimized, and the standards of domestic road safety facilities installation and management guidelines can be met.

10: front plate
11: middle plate
12: rear plate
13: pipe
14: corrugated plate
14a: vertical corrugated plate
14b: horizontal corrugated plate
15: cover
16: corrugated plate support bar
17: guide bar
18: block for pressurization
19: incision groove
20: buffer pad
21: slit
22: cover flange
23: Nut with Washer
24: spring
25: bracket
26: pipe holder
27: guide bush
28: bar bracket

Claims (10)

Front plate 10, the middle plate 11 and the rear plate 12 which is installed at the rear of the work vehicle while being arranged side by side along the vehicle front and rear direction while maintaining a constant distance from each other;
A plurality of pipes 13 arranged side by side along the front and rear directions of the vehicle and installed in a structure in which both ends of the intermediate plate 11 are supported between the front plate 10 and the rear plate 12;
A plurality of corrugated plates 14 disposed side by side along the front and rear directions of the vehicle and installed at both ends between the front plate 10 and the middle plate 11 and between the middle plate 11 and the rear plate 12;
It includes, and is deformed and absorbed while the corrugated plate 14 is folded with the pipe 13 by the impact applied from the front when the vehicle collides,
While accommodating the pipe 13 and the corrugated plate 14 inwards, the front plate 10, the middle plate 11 and the rear plate 12 of the upper and both side portions of the cover while preventing debris from spreading to the outside The main vehicle-mounted shock absorbing device, characterized in that it further comprises a cover 15.
delete The method according to claim 1,
The corrugated plate 14 is disposed between the vertical corrugated plate 14a on both sides, and the vertical corrugated plate 14a, which is vertically laid down, and horizontally laid down. Vehicle-mounted shock absorber.
The method according to claim 3,
In order to support the bottom and the upper surface of the horizontal corrugated plate (14b) while being supported across the vertical corrugated plate (14a) of both sides so that the vertical corrugated plate (14a) and the horizontal corrugated plate (14b) can be folded in a straight line. Vehicle-mounted shock absorbing device further comprises a plurality of corrugated plate support bar for inducing this.
The method according to claim 1,
The pipe 13 further includes a pressing block 18 fitted to the tip portion, the tip portion of the pipe 13 to which the pressing block 18 is fitted is torn to a certain depth in the pipe length direction and at the same time in the pipe circumferential direction. The vehicle-mounted impact absorbing device, characterized in that a plurality of incision grooves 19 are formed to induce pipe deformation while being arranged at regular intervals.
The method according to claim 5,
Further comprising a guide bar (17) disposed across the interior of the pipe (13) and supported at both ends between the front plate (10) and the rear plate (12) to guide the rear movement of the pressure block (18). Vehicle-mounted shock absorbing device, characterized in that.
The method according to claim 1,
The shock absorbing device of claim 1, wherein a shock absorbing pad 20 is installed on the inner side of the front plate.
The method according to claim 1,
The cover 15 is fastened to the plate side through a plurality of slits 21 side by side along the length of the cover to be slidable in the front and rear direction of the vehicle, and the front plate of the cover 15 is vertically bent inward and the front plate. A cover flange 22 having a relatively short length relative to the distance between the 10 and the intermediate plate 11 is formed, so that when the vehicle crashes, the cover 15 is pushed toward the rear of the vehicle, and the cover flange 22 is moved to the intermediate plate ( 11) The vehicle-mounted shock absorbing device, characterized in that it is capable of absorbing shock while starting to deform at the time of being caught.
The method according to claim 1,
The pipe 13 is made of a stepped pipe of different stages having different diameters, and the stage located at the front side of the vehicle has the smallest diameter and the stage having the larger diameter toward the rear side. Vehicle-mounted shock absorbing device, characterized in that the position.
The method according to claim 6,
The washer nut 23 is fastened to the rear end screw of the guide bar 17, and is fitted around the rear end of the guide bar 17, and between the rear plate 12 and the washer nut 23. The vehicle-mounted shock absorbing device further comprises a spring (24) that is supported at both ends and exerts a tight binding function with spring elasticity.

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