KR20170077752A - Crashworthy Post Utilizing Conservation of Linear Momentum and Energy Absorbing Module, and Method for Reducing Car Impact using such Crashworthy Post - Google Patents

Abstract

While the vehicle collides with the pillar main body and moves in a state where the vehicle and the pillar main body are integrated with each other, the linear motion amount of the vehicle is transmitted to the pillar main body so that a part of the impact energy is primarily scattered, The impact energy absorbing module or the Energy Absorbing Module (abbreviated as "EAM" hereinafter) provided on the base (base) while moving rearward is deformed to impact the rest of the vehicle impact energy, And more particularly, to a method for reducing shock when a vehicle striking collision occurs.

Description

(Crashworthy Post Utilizing Conservation of Linear Momentum and Energy Absorbing Module, and Method for Reducing Car Impact using Crashworthy Post)

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a crushworthy post which can reduce collision energy generated when a vehicle is collided while ensuring the safety of a passenger, and a method of reducing impact by using the crushworthy post, The linear motion amount of the vehicle is transmitted to the support main body so that a part of the collision energy is primarily dissipated while the support main body is moved backward by the collision, (Hereinafter abbreviated as "EAM") provided on a base (base) of a vehicle, thereby causing the remaining portion of the vehicle collision energy to be dissipated, and a vehicle And a method of reducing an impact upon a landing collision of the vehicle.

Traffic accidents in which vehicles collide with facilities installed on roads (hereinafter referred to as "roadside facilities") frequently occur. In order to safeguard occupants and vehicles from the impact of vehicles on roadside facilities, it is most desirable to install the roadside facilities outside the roadside hazardous area. However, not only are there space constraints to install such roadside facilities, There is a restriction that it must be installed near the roadside in order to do the work.

Particularly, among the facilities of the roadside, for a support made of a vertical member such as a telephone pole for installing electric wires, an illuminator for lighting (a light pole) for installing a light, a road sign for installing a road sign, Protective measures are very urgent. Generally, when a vehicle collides with a small landing pillar, an excessive deformation of a small landing pillar occurs, and thus the pillar or the bent pillar itself is a serious risk to the safety of the vehicle occupant. However, The amount of the impact acting on the vehicle is large, thereby causing fatal damage not only to the vehicle but also to the occupant.

A countermeasure based on the concept of breakaway support has been proposed in the past in order to minimize the risk of collision of a vehicle with a vehicle exposed to the road side. "Breakaway Support" is an alternative to stiffening the connection between the stanchions and the foundation (base), ensuring the structural safety of the wind load, but also separating the stanchions from the foundation at the connections during impact loading, The basic concept is to eliminate the risk factors for the passengers by minimizing the speed change. However, since the conventional support with the concept of "Breakaway Support" is very likely to cause secondary damage after a vehicle collision, it is difficult to apply the support to a large-sized land support have. Especially, in the conventional support in which the concept of "brake sign support" is introduced, it is necessary to minimize the working distance in the event of a vehicle collision, and there is a desperate need to reduce the possibility of a secondary collision.

On the other hand, an energy absorption post (hereinafter abbreviated as "EAP ") has been proposed as a prior art. The conventional shock absorbing strut minimizes the damage of the collision vehicle and the occupant by collapsing the strut when the vehicle collides. The prop are basically structurally safe against wind loads. On the other hand, in order to secure the safety of the occupant of the collision vehicle, when the vehicle collides with the support, the support should be easily destroyed and the structural strength of the support should be weakened. The conventional EAP corresponds to a method of sacrificing the structural strength of the landing inevitably in order to minimize the damage of the collided vehicle and the occupant. As a result, since the conventional shock absorbing strut has sacrificed structural strength, it has a problem in that it has a structural weakness and a structural weakness against a load such as a wind load. There is an attempt to use the materials that make up the land as a composite material, but it is not yet possible to completely solve the above problems.

In another method, a method of attaching a shock absorbing member or an impact absorbing module to a surface of a strut is suggested. As an example of such a conventional technique, Korean Patent Laid-Open Publication No. 10-2003-86152 discloses a technique of installing a tubular member containing fluid in the outside of a column, entitled " However, in the case of such a conventional technique, a desired shock absorbing effect can be expected only when the shock absorbing module or the like is a predetermined thickness or more. However, due to space restrictions, there is a restriction on the size and thickness of the shock absorbing module, So that sufficient performance may not be exhibited. In addition, there is a problem that the aesthetic appearance is hindered by the presence of the attachment on the outer surface of the support.

Korean Patent Laid-Open No. 10-2003-86152 (published on November 11, 2003).

The present invention has been developed in order to overcome the limitations and problems of the prior art as described above, and it is an object of the present invention to provide an air conditioner which can secure sufficient safety for a passenger when a vehicle collides with a landing, The present invention relates to a technique for enabling a user to use a computer program.

Particularly, the present invention minimizes the working distance (the distance from when the vehicle collides and stops) when the vehicle collides with the support, greatly reduces the possibility of secondary collision, The present invention also aims to provide a technology that can be applied to a large-sized landing as well as to a landing installed in a large-sized landing.

More particularly, the present invention relates to a control column capable of effectively absorbing an impact due to a collision of a vehicle without reducing the structural strength of the column regardless of the size (size) of the column and the installation place, And to provide an efficient method which can reduce the amount of water.

In order to achieve the above object, the present invention reduces the speed of an impacting vehicle by using inertia of a pillar main body itself at the initial stage of a vehicle collision, and then installs an energy absorption module ("EAM" And a method of reducing an impact at the time of collision of a vehicle support by using the same is provided.

Specifically, in the present invention, the present invention includes a base member and a support main body vertically installed on the base member, wherein the support main body is provided on the base member so as to be movable in the rearward direction. When the vehicle collides with the support main body, Wherein the body is moved together to stop the vehicle through absorption and dissipation of collision energy due to collision of the vehicle.

Particularly, in the present invention, there are provided a base and a support body vertically erected and installed on the base; A guide key protruding from the lower end of the support main body; Wherein a guide passage is formed in the base so as to extend in a rearward direction with a guide key inserted therein; An impact energy absorbing member (EAM), which is deformed and absorbs energy when the guide key is collided, is inserted into the guide passage rearwardly of the support body; When the vehicle collides with the support main body, the vehicle and the support main body move together, thereby causing the guide key to impact the impact energy absorbing member to stop the vehicle by absorbing and dissipating the impact energy due to the impact energy absorbing member being deformed The present invention relates to a sewing machine.

The present invention also provides a method for reducing an impact generated when a vehicle collides with a support, comprising stopping the vehicle by absorbing and dissipating the impact energy of the vehicle using the control pillar as described above.

In the gypsum strut of the present invention and the method of reducing collision impact of a vehicle using the same, the guide key has an inverted T shape formed by a vertical portion and a horizontal portion coupled to a lower end of the vertical portion; The cross-sectional shape of the guide passage may also be formed in an inverted T shape corresponding to the shape of the guide key, and a plate-shaped base plate disposed on the upper surface of the base at the lower end of the support body; The guide key may be integrally coupled to the lower surface of the base plate.

Further, in the present invention, the impact energy absorbing member is disposed in the guide passage from a position spaced apart from the guide key in the rearward direction by a distance from the guide key, and when the vehicle collides with the support body, the vehicle and the support body are integrated Absorption and dissipation of primary collision energy occurs while moving by the distance of separation, and the guide key impacts the impact energy absorbing member after the vehicle and the support main body have passed the separation distance.

In the case of the present invention, at the initial stage of a vehicle collision, the inertia of the propellant itself is used to reduce the speed of the collided vehicle, and then the vehicle is stopped using the collision energy and kinetic energy absorbing capability of the collision energy absorbing member (EAM) To ensure the safety of the passenger.

Particularly, in the germanium strut of the present invention, the coupling between the strut body and the base is continuously maintained even after the vehicle collides with the strut body, and therefore, due to the collision, breakage or excessive deformation of the strut body caused by the collision, The second collision between the pillar main body and the vehicle can be effectively prevented.

In addition, in the insect control strut of the present invention, since the pillar main body exhibits sufficient resistance against pulling or conduction in a state before the vehicle collides, the load of structural strength of the pillar for shock absorption and the resulting wind load It is possible to solve all of the disadvantages of the structural weakness of the system.

Further, since the retractable pavement according to the present invention exerts a useful performance regardless of the size (scale) and installation position of the pillar main body, it can be easily applied not only to a large pillar but also to a pillar .

Further, in the gum-strut pillar according to the present invention, since the strength and the installation length of the impact energy absorbing member are adjusted, it is possible to satisfy the safety of the passenger under various collision conditions, have.

1 is a schematic perspective view showing a configuration of a stapler according to an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view along line AA of FIG. 1 showing the combination of a strut body and a base in a gumming strut according to the present invention shown in FIG.
FIG. 3 is a schematic cross-sectional view taken along line BB of FIG. 1 showing the configuration of a guide passage or the like in a companion bed according to the present invention shown in FIG.
FIG. 4 is a schematic perspective view of a lower portion of a supporting column showing the shape of an inverted T-shaped guide key provided in the insect control strut of the present invention in detail.
FIG. 5 is a schematic half cross-sectional perspective view according to line CC of FIG. 1 showing the strut body and base combination structure in the gumming strut according to the present invention shown in FIG.
6 is a schematic perspective view showing that the strut body is coupled to the base in the gum stalk according to another embodiment of the present invention.
Fig. 7 is a schematic perspective view showing a state after the state of the support body shown in Fig. 6 is coupled to the base; Fig.
FIG. 8 is a schematic cross-sectional view taken along the line DD of FIG. 7 showing the configuration of a guide passage or the like in the gumming strut according to the present invention shown in FIG.
9 to 14 are a schematic plan view sequentially showing the behavior of the vehicle and the column main body when the vehicle collides with the gypsum strut according to the present invention, and a schematic lateral sectional view corresponding to Fig. 8, respectively.
15 is a graph showing the time history of the acceleration experienced by the vehicle during the collision according to the simulation test results of the insect control pillars of the present invention.
FIG. 16 is a graph showing a change in speed of a vehicle according to a time zone when a vehicle collides with a checkerboard support according to the present invention. FIG.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Although the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that the technical idea of the present invention and its essential structure and operation are not limited thereby. In the present specification, "rearward" means the direction in which the vehicle travels toward the support, that is, the direction in which the vehicle travels. That is, the direction indicated by the arrow K in Fig. 1 becomes "rearward direction ". Therefore, in the present specification, "forward" means a direction in which the vehicle is viewed when the vehicle runs toward the support. In the present specification, the term "lateral direction " means a direction perpendicular to the backward direction or the forward direction on the plane.

The holding body of the present invention is provided with a base member and a holding body vertically installed on the base member, wherein the holding body is provided on the base member so as to be movable in the rearward direction. When the vehicle collides with the holding body, And the stanchion main body move together to stop the vehicle through the absorption and dissipation of the collision energy due to the collision of the vehicle.

More specifically, in the initial stage of collision of the vehicle according to the present invention, the velocity of the collision vehicle is reduced by using the inertia of the pillar main body itself, and thereafter, by using the impact absorbing capability of the EAM embedded in the base, And the energy is efficiently dissipated to stop the vehicle, thereby securing the safety of the passenger.

FIG. 1 is a schematic perspective view showing a construction of a gumming strut 100 according to an embodiment of the present invention. 2 is a schematic cross-sectional view along the line AA of FIG. 1 showing a configuration in which the lower end of the column body 1 is coupled to the base member 2 in the gum stopper according to the present invention shown in FIG. 1, 3 is a schematic cross-sectional view along line BB of FIG. 1 showing the configuration of a guide trough 3 and the like in a companion bed according to the present invention shown in FIG. FIG. 4 is a schematic perspective view showing the shape of a guide key 11 provided at the lower end of the strut body 1 in the gum stopper according to the present invention shown in FIG.

As shown in the figure, the gumming strut 100 according to the present invention includes a strut body 1 having a base plate 10 integrally formed at a lower end thereof, and a base plate 10, And a base member 2 on which the main body 1 is vertically installed. As shown in the figure, the base member 2 may have a slab shape, which may be made of cast-in-place concrete, but may be factory-manufactured in a precast manner and installed on site.

A guide key 11 is provided at the lower end of the germinate pestle 100 to be inserted into the base member 2. The guide key 11 is inserted into the base plate 2 10 and can be positioned in a downwardly protruding state. Particularly, in the embodiment shown in the drawing, the guide key 11 is composed of a vertical part and a horizontal part coupled to the lower end of the vertical part, and is formed by inverting the letter T upwards and downwards (guide key in the inverted T shape) Is integrally coupled to the lower surface of the base plate 10. As described above, if the guide key 11 has an inverted T-shape, it is effective to prevent conduction and drawing of the column body 1. [ In the verification of the present invention to be described later, an inverse T-shaped guide key 11 having a length of 120 mm, a width of 150 mm and a thickness of 200 mm was used.

The base member 2 is a structure in the form of a slab having a thickness as shown in the figure, and can be made of concrete. A guide trough 3 is provided in the base member 2 in such a manner that the guide key 11 is slid rearward due to a vehicle collision when the guide key 11 is inserted, As shown in FIG. However, the guide passage 3 is closed on the outside of the base member 2 in the rearward direction. This is to apply a reaction force to the EAM 4 so that the EAM 4 is disposed in the guide passage 3 and the EAM 4 is deformed by a vehicle collision as described later. The guide passage 3 is a passage having an open top. For example, when the base member 2 is manufactured, the guide passage 3 can be easily formed by disposing the pipe member. However, the method of forming the guide passage 3 is not limited to the use of the pipe member.

In the case where the guide key 11 has an inverted T shape including a vertical portion and a horizontal portion, the cross section of the guide passage 3 also has an inverted T shape corresponding to the shape of the guide key 11, . When the shape of the guide key 11 and the cross-sectional shape of the guide passage 3 are inverted T-shaped as described above, even if the vertically upward force acts, the guide key 11 is pulled out from the guide passage 3 in the vertical direction Therefore, when the external load such as wind load is applied to the pillar main body 1 or the pillar main body 1 is turned in the course of the guide key 11 moving backward in the guide path 3 Or pulling out of the column main body 1 can be effectively prevented, and the structural stability of the column main body 1 is greatly improved.

Fig. 5 is a schematic half cross-sectional perspective view in the forward direction according to the line CC of Fig. 1 showing an example of a configuration in which the strut body 1 is coupled to the base member 2 in the companion strut according to the present invention shown in Fig. Are shown. 5, the guide groove 11 is formed in the base member 2 with the guide key 11 inserted into the guide groove 11 at the viewpoint of the guide passage 3, 210 may be formed so that the guide key 11 is inserted into the insertion port 210 in the vertical direction. However, the method of another embodiment shown in FIGS. 6 to 8 described later may also be used.

6 is a schematic perspective view showing a state in which a strut body 1 is coupled to a base member 2 in a gibbeton strut 100 according to another embodiment of the present invention, There is shown a schematic perspective view showing the state after the holding main body 1 is joined to the base member 2 following the unfolded state. 8 is a schematic view of the insect pillars 100 according to the embodiment of the present invention shown in FIG. 7, taken along the line DD of FIG. 7, showing the installation structure of the guide path 3 and the lower end of the column main body 1 in detail. Sectional view is shown.

The guide passage 3 extends from the front side surface of the base member 2 to the front side surface of the base member 2 so that the guide key 11 is guided by the guide passage 3 As shown in Fig. That is, the guide passage 3 extends to the side of the base member 2 in the forward direction, so that the guide key 11 is inserted into the guide passage 3 from the front side of the base member 2, (1) may be coupled to the base member (2).

In the present invention, the EAM (4) is provided in the guide passage (3). The EAM 4 is filled in the guide passage 3 and is preferably filled in the backward direction from a position spaced apart from the guide key 11 by a predetermined distance L in the backward direction. It is preferable that there is an interval of the distance L between the guide key 11 and the position where the EAM 4 starts filling. Particularly, it is preferable that the separation distance L is set to < a distance at which the vehicle collides with the pillar main body and the momentum is transmitted to the pillar to move the pillar main body and the vehicle at the same speed & The distance at which the momentum is transmitted to the strut and collides with the strut body and the vehicle at the same speed can be calculated using the speed of the vehicle, the size of the strut body, etc., and is about 1.5 m. As the EAM 4, a pipe member such as a steel pipe which is deformed when an impact is applied can be used. The pipe member having a predetermined length is arranged in the guide passage 3 so as to be continuous in the longitudinal direction thereof, Function. However, the EAM 4 is not limited to such a pipe member, and various known materials such as rubber and synthetic resin can be used as long as the member can absorb impact.

Next, with reference to Figs. 9 to 14, a method for reducing the straddle collision impact of a vehicle using the groping stalk 100 of the present invention will be described.

The gypsum strut 100 of the present invention having the above structure decelerates the speed of the collided vehicle primarily by using the principle of conserving linear momentum. In the insect strut 100 of the present invention, the guiding passage 3 is provided with the guide post 11 at the position where the post main body 1 is erected before the vehicle collision, that is, the position of the guide key 11, There is an empty space of a distance L between the starting positions.

Therefore, when the vehicle collides with the column main body 1, the vehicle and the column main body 1 move together in the backward direction as a first step. The linear momentum of the vehicle is transmitted to the column main body 1 The vehicle and the column main body 1 move together at a decelerated speed at the interval of the distance L while being transmitted.

9 (a) is a schematic top plan view of the vehicle before colliding with the insect control pillars 100 of the present invention, and FIG. 9 (b) Corresponding cross-sectional side view. Fig. 10 is a view showing a moment when the vehicle collides with the insect control pillars 100 of the present invention. Fig. 11 is a view showing a state in which the vehicle and the pillar main body 1 together with the insect pillars 100 of the present invention, (L) of the vehicle. 12A to 14, including Figs. 10 and 11, are a plan view schematically from top to bottom in a view (a) of each drawing, and (b) Fig.

9 to 11, when the vehicle collides with the strut body 1 in a plastic collision, the linear motion of the vehicle is transmitted to the strut body 1 as a first step, ) Are integrated with each other and the separation distance L is moved together in a decelerated state. A primary collision damping is performed in which a part of the collision energy is dispersed in the movement process in the collision and separation distance (L) section.

The guide key 11 moves in the rearward direction along the guide path 3 when the pillar main body 1 and the vehicle move along the distance L. After the collision distance L, The guide key 11 comes into contact with the EAM 4, and the EAM 4 is impacted. Fig. 12 is a view showing a state in which the guide key 11 touches the EAM 4, following the state shown in Fig.

Since the pillar main body 1 and the vehicle still have impact energy and kinetic energy, the pillar main body 1 and the vehicle continue to move backward together after the guide key 11 touches the EAM 4, The key 11 presses the EAM 4 and the EAM 4 is deformed to reduce the moving speed of the main body 1 and the vehicle in the backward direction and eventually stops the main body 1 and the vehicle. 13 and 14 are views sequentially showing a state in which the EAM 4 is deformed by the guide key 11 and a state in which the vehicle and the column main body 1 are stopped from moving.

As a first step in accordance with the vehicle collision, the linear momentum of the vehicle is transmitted to the support main body 1, so that the primary collision energy dissipation and the collision attenuation proceed while the vehicle and the support main body 1 move in the backward direction at the same speed. The guide key 11 of the pillar main body 1 moving with the vehicle deforms the EAM 4 by impacting the EAM 4 so that the energy absorption performance of the EAM 4 The secondary impact damping in which the residual impact energy and the kinetic energy remaining in the pillar main body 1 are dissipated and the vehicle and the main body 1 are stopped. As described above, the existence of the separation distance L in the present invention effectively dissipates the collision energy through the two steps.

The insect pillars 100 of the present invention can safely protect the vehicle occupant in the event of a vehicle collision by the above process. Specifically, in the insect pillars (100) of the present invention, when the vehicle collides, the pillar main body (1) moves rearward together with the vehicle, and even after the vehicle collides, the lower end of the pillar main body Since the coupling is continuously maintained, it is possible to effectively prevent secondary collision between the main body 1 and the vehicle due to conduction, breakage, excessive deformation, etc. of the main body 1 due to collision, which has been a problem in the related art do.

Particularly, in the insect pillars 100 of the present invention, in the state before the vehicle collides, the support main body 1 exerts a large resistance force against the pullout or the conduction by the engagement of the guide key 11 and the guide passage 3 Which is a problem of the prior art, is disadvantageous in terms of structural strength at the sacrifice of the stiffness of the strut and the structural weakness of the load such as wind load All of which can be solved. That is, according to the present invention, impact due to collision of a vehicle can be effectively absorbed without weakening the structural strength of the support.

The insect pillars 100 according to the present invention are optimized in accordance with the energy attenuation in the coupling structure between the column main body 1 and the base member 2. The EAM 4 and the guide passages 3 for installing the same have a base It can be easily applied to any location where the base member 2 having the structure of the present invention can be installed. In particular, even when the size of the column main body 1 is large, a novel combination structure between the column main body 1 and the base member 2 proposed in the present invention can be easily applied. Therefore, the gumming strut 100 of the present invention can be easily applied to a large-sized pillar, regardless of the size of the pillar.

Further, in the case of the insecticide strut according to the present invention, the safety of the passenger can be satisfied under various collision conditions by adjusting the strength and the installation length (the length filled in the guide passage) of the EAM 4.

Next, a description will be given of a process of verifying performance of CC2 grade (0.9 ton-80 km / h) in frontal impact of a shock absorbing facility and a result thereof through a simulation test for the insect pillars 100 of the present invention.

In the simulation test according to the present invention, a weight body of 0.9 ton in a holding body 1 made of a round steel steel pipe having a height of 7.2 m, a diameter D of 355.6 mm and a thickness t of 9 mm was mounted at a speed of 20 km / and the frontal collision at intervals of h was analyzed using a known simulation program "LS-DYNA program ". A sign 4.45 m ㅧ 2.2 m in size was attached to the pillar main body 1. The distance L was 1.5 m. The guide passage 3 was formed to be long with respect to the entire base member 2, and the guide passage 3 had a length of 3 m. The EAM (4) was 55 mm in diameter, 4.5 mm in thickness, 140 mm in the backward direction, and 20 pieces of material SS400 steel pipes were used.

The vertical height of the guide key 11 was 50 mm, and the length in the backward direction was 200 mm. The base plate 10 provided at the lower end of the column main body 1 was a square steel plate having one side of 600 mm and the thickness of the steel plate constituting the base plate 10 was set to 50 mm so as not to be deformed during the collision. The EAM 4 has a backward length of 275 mm.

FIG. 15 is a graph showing the time history of the acceleration experienced during the collision of the vehicle according to the result of the simulation test for the above conditions, and FIG. 16 is a graph showing the speed change of the vehicle by time zone have. In FIG. 15, the X-axis represents time (unit: second), and the Y-axis represents acceleration. In FIGS. 15 and 16, the Post-Impact Head Deceleration (PHD) and the Theoretical Head Impact Velocity (THIV) represent a known "occupant safety index" indicating how safe the occupant is.

As can be seen from Figs. 15 and 16, in the above simulation test, the collided vehicle is plastically deformed while colliding for 0.05 second, and becomes integral with the support body 1, and part of the linear momentum of the vehicle is transmitted to the support main body 1 , And the inverted T-shaped guide key started to impact the EAM at 0.135 to 0.14 seconds while the main body 1 and the vehicle proceeded at a speed of 40 km / h together with the decelerated state. As a result, the EAM composed of a plurality of steel pipes sequentially ruptures and absorbs the impact energy and the kinetic energy, so that the traveling speed of the vehicle and the column body 1 gradually decreases and the speed becomes zero in 0.25 seconds, Was observed.

In this collision, THIV was 41.9km / h from 0.094sec after collision, and it was confirmed that it is less than 44km / h of performance standard of crush cushion. In particular, PHD was found to be very safe compared to the permissible value of 20g, which is 13.2g at 0.2456sec-0.2556sec, immediately after the impact of the inverted T-shaped guide key on the EAM.

The results of the simulation test show that in the gypsum strut according to the present invention, the vehicle collides with the pillar main body in the first half of the collision, thereby transferring the momentum of the vehicle to the pillar main body, thereby lowering the speed of the vehicle, It is possible to completely stop the vehicle.

1: holding body
2: base member
3: guide passage
4: EAM
10: Base plate
11: Guide key
100: insect pillars

Claims (9)

(1) provided on a base member (2) and a base member (2) vertically erected,
The support main body 1 is provided on the base member 2 so as to be movable in the rear direction so that when the vehicle collides with the support main body 1, the vehicle and the support main body 1 move together, And the vehicle is stopped through absorption and dissipation of energy.
The method according to claim 1,
A guide key 11 protrudes from the lower end of the column main body 1;
A guide passage (3) is formed in the base member (2) so that the guide key (11) is inserted and extended in a rearward direction;
An impact energy absorbing member (EAM) 4, which is deformed and absorbs energy when the guide key 11 collides, is inserted into the guide passage 3 to the rear of the support body 1;
The collision energy absorbing member 4 is deformed by the impact of the guide key 11 against the impact energy absorbing member 4 as the vehicle collides with the pillar main body 1 and the vehicle body and the pillar main body 1 move together, Characterized in that the collision energy absorption and dissipation takes place.
3. The method of claim 2,
The guide key 11 has an inverted T shape formed by a vertical portion and a horizontal portion coupled to a lower end of the vertical portion;
Wherein the sectional shape of the guide passage (3) is also an inverted T shape corresponding to the shape of the guide key (11).
The method according to claim 2 or 3,
A plate-shaped base plate 10 placed on the upper surface of the foundation member 2 is provided at the lower end of the column main body 1;
Wherein the guide key (11) is integrally coupled to the lower surface of the base plate (10).
The method according to claim 2 or 3,
The impact energy absorbing member 4 is inserted and disposed in the guide passage 3 from a position spaced apart from the guide key 11 by a distance L in the backward direction,
When the vehicle collides with the column main body 1, primary collision energy is absorbed and dissipated while the vehicle and the column main body 1 are integrated and moved together by the distance L, Absorbs the impact energy absorbing member (4) after the guide key (11) has passed the separation distance (L).
The method according to claim 2 or 3,
An insertion port 210 into which the guide key 11 can be inserted is formed at the viewpoint of the guide path 3;
Characterized in that the support body (1) is vertically installed on the base member (2) by inserting the guide key (11) into the insertion port (210) in the vertical direction.
The method according to claim 2 or 3,
The guide passage 3 is extended to the front side surface of the base member 2 so that the guide key 11 is inserted into the guide passage 3 from the front side surface side of the base member 2, Is provided vertically on the base member (2). The method according to claim 2 or 3,
Wherein the plurality of pipe members are continuous in the longitudinal direction and disposed in the guide passage (3) to form the impact energy absorbing member (4).
CLAIMS What is claimed is: 1. A method of reducing an impact occurring when a vehicle impacts on a support,
The strut comprises a base member (2) and a control strut (100) having a strut body (1) vertically erected and installed on the base member (2);
When the vehicle collides with the pillar main body (1), the vehicle and the column body (1) move together to stop the vehicle by absorbing and dissipating impact energy.

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