KR101448729B1 - Cowl for protecting pedestrian - Google Patents

Abstract

The present invention relates to a cowl shock absorber for pedestrian protection,

A shock absorbing device for a cowl top panel mounted on an upper portion of a hood panel of a vehicle and a lower portion of a lower portion of a windshield glass,

The shock absorber of the cowl top panel comprises:

A lowered force member to which both ends are fixedly attached to the bottom panel and the bottom panel so as to form a closed end face inside the cowl top panel; Left and right guide tubes protruding upward from left and right sides of the upper surface of thelower force member; A plurality of support tubes protruding from the left and right guide tubes at regular intervals; Left and right guide pins projected downward so as to be inserted into the left and right guide pipes of the left and right force members so as to be movable upward and downward and guide pins projected downward at predetermined intervals between the left and right guide pins, And an operation reinforcing bar having a plurality of impact absorbing bars formed on the tube so as to be movable upward and downward, respectively.

Cowl top panel, low rear force member, operation reinforcing bar, guide tube, support tube, guide pin, shock absorbing bar, hood panel

Description

{Cowl for protecting pedestrian}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cowl shock absorber for protecting a pedestrian, and more particularly, to a cowl shock absorber for protecting a cowl, To a cowl shock absorber of an automobile which can protect the head portion of a pedestrian that is hit.

2. Description of the Related Art Generally, an engine, an engine, a power transmitting device, and various devices necessary for running are mounted on an engine room. A cowl connected to a windshield glass is installed at a rear upper portion of the engine room. It is a longitudinal member that plays a large role in the torsional rigidity of the vehicle body.

The cowl is connected to a dash panel located at the rear lower portion of the engine room to separate the engine room and the vehicle compartment from each other. The cowl serves to prevent the engine and other devices from intruding into the vehicle interior during a frontal collision or a rearward collision during vehicle operation It is required to be constituted by a rigid structure of high strength.

1 shows a conventional cowl top panel 300 installed at a boundary portion between a windshield glass 100 and a hood panel 200 at a front portion of an automobile. The conventional cowl top panel 300 Is composed of an upper cowl panel 310 and a lower cowl panel 320. The upper and lower cowl panels are connected to each other to form a closed box-like cross section, and the windshield glass 10 and the hood panel 200).

In addition, a reinforcement 330 for increasing the rigidity of the cowl top panel 300 is formed by dividing one large closed end face into two closed end faces inside the conventional box-shaped cowl top panel 300 And a wiper driving device for operating the wiper is installed in the cowl top panel 300. [

However, the above-described cowl top panel 300 structure of the related art can increase the strength of the cowl top panel 300 in the form of a box so that various devices mounted in the engine room can be prevented from intruding into the inside of the vehicle However, when the head portion of the pedestrian is hit by the rigidity of the cowl top panel 300 installed at the lower portion of the hood panel 200 when the pedestrian collides with the pedestrian, The pedestrians can not absorb the shocks applied to the head part of the pedestrian, so it is pointed out that the problem is very unreasonable in terms of protecting pedestrians.

2, the cowl top panel 400 is divided into an upper cowl panel 410 and a lower cowl panel 420, as shown in FIG. 2, A lower member 430 for forming a closed end face inside the cowl top panel 400 and a force member 420 for opening toward the upper cowl panel 410 above thelower force member 440 to form a shock absorbing space 450.

However, since the above-described prior art has a structure in which the upper force member 440 formed above the low-in-force member 430 constituting the cowl top panel 400 is opened, a disadvantage of lowering the rigidity of the cowl The shock absorbing space 450 of the cowl top panel 400 is formed in only a narrow upper and lower spaces between the upper surface of the lower member 430 forming the closed end face and the open upper force member 440 Therefore, when an impact is applied to the upper side of the hood panel, the collapse space of the upper force member 440 is limited, so that the impact energy can not be absorbed sufficiently. This is because the pedestrian It can not be protected.

SUMMARY OF THE INVENTION [0006] The present invention has been made in order to solve all the problems of the conventional art described above, and it is an object of the present invention to provide a cowl top panel which is capable of securing a high rigidity of a cowl top panel when a head portion of a pedestrian collides with an upper portion of a hood panel The cowl top panel can effectively absorb and dissipate the impact energy applied to the hood panel, thereby protecting a pedestrian from a fatal accident.

The present invention, as a means for realizing the above object,

A shock absorbing device for a cowl top panel mounted on an upper portion of a hood panel of a vehicle and a lower portion of a lower portion of a windshield glass,

The shock absorber of the cowl top panel comprises:

A lowered force member to which both ends are fixedly attached to the bottom panel and the bottom panel so as to form a closed end face inside the cowl top panel;

Left and right guide tubes protruding upward from left and right sides of the upper surface of thelower force member;

A plurality of support tubes protruding from the left and right guide tubes at regular intervals;

Left and right guide pins projected downward so as to be inserted into the left and right guide pipes of the left and right force members so as to be movable upward and downward and guide pins projected downward at predetermined intervals between the left and right guide pins, An operation reinforcing bar formed with a plurality of shock absorbing bars which are fitted on the tube so as to be movable up and down;

Is provided.

In addition, each of the plurality of shock absorbing bars has a plurality of broken lips formed in a plurality of broken lines, which collide with the plurality of support tubes when the operation reinforcing bar is lowered by an impact applied to the upper side of the hood panel .

In addition, a plurality of broken lips formed in multiple stages in each of the plurality of shock absorbing bars are formed to have an outer diameter larger than that of a plurality of support pipes into which the shock absorbing bars are inserted.

In addition, the plurality of broken lips are made of a synthetic resin material such as shock absorbing bars, and are integrally formed on the outer periphery of the shock absorbing bar.

Further, the plurality of broken lips are fixedly attached to the outer periphery of the impact absorbing bar in a prefabricated manner.

The plurality of broken lips are fixedly attached to the outer periphery of the impact absorbing bar by any one of the assembling members composed of bolts, rivets, and pins.

According to the present invention, the cowl top panel can maintain the rigidity of the cowl at a high level, thereby preventing various devices such as the engine mounted in the engine room from entering the inside of the vehicle when a front collision occurs while the vehicle is running. The shock absorbing device of the cowl top panel absorbs the impact energy when the head part of the head falls on the upper side of the hood panel as the pedestrian falls on the side of the automobile to mitigate the impact applied to the head part of the pedestrian, It is possible to simplify the internal structure of the cowl top panel and reduce the restriction on the collapsing space by absorbing the collision energy dispersion action of the shock absorber. And the like.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cow shock absorbing device for protecting a pedestrian according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a perspective view showing an installation state of a shock absorber mounted on a cowl top panel for explaining the present invention, FIG. 4 is an exploded perspective view of a cowl shock absorber according to the present invention, FIG. 6 is a cross-sectional view taken along the line AA in FIG. 5, and FIG. 7 is a sectional view of the cowl shock absorber according to the present invention.

1, the cowl top panel 1 is located below the boundary between the windshield glass 100 and the hood panel 200 as shown in Fig. 1, Respectively.

The cowl top panel 1 includes an upper panel 11 formed to be inclined to be positioned below the hood panel side, a lower panel 12 positioned below the windshield glass, and upper and lower panels 11 and 12, And a bottom panel 13 formed to extend from the bottom panel 13 to the bottom panel 13.

A shock absorbing device is mounted on the inside of the cowl top panel 1.

The low-lying force member 2 of the shock absorbing device is fixedly attached to both the bottom panel 13 and the bottom panel 12 of the cowl top panel 1 by spot welding or the like and both ends of the low- Left and right guide tubes 22 and 23 protruding upward from both sides of the upper surface 21 of the upper surface 21 of the upper tube 21 and a plurality of support tubes 24 Is formed.

The operation reinforcing bar (3) of the shock absorbing device is installed so as to be positioned below the upper force member (14).

The upper reinforce member 14 is formed in a structure connected to the upper end of the lower panel 12 of the cowl top panel 1. When the upper side 500 of the hood panel is depressed by the impact, ).

On both the left and right sides of the bottom surface of the operation reinforcing bar 3 are provided upper and lower guide rails 22 and 23 protruding from left and right sides of the upper surface of the lower right force member 2 The left and right guide pins 31 and 32 protrude downward and are sandwiched between the left and right guide pins 31 and 32 so as to be movable upward and downward, A plurality of shock absorbing bars 33 projecting downward at predetermined intervals.

A plurality of broken lips 34 are formed on the outer periphery of each of the plurality of shock absorbing bars 33 at predetermined intervals.

A plurality of broken lips 34 formed in a plurality of stages on the outer periphery of each of the plurality of shock absorbing bars 33 are connected to a plurality of support pipes 33, 24). ≪ / RTI >

The plurality of damaged lips 34 may be formed of a material such as a plurality of shock absorbing bars 33. For example, when the plurality of shock absorbing bars 33 are formed of synthetic resin, Absorbing bar 33 and the plurality of broken lips 34 are preferably formed of a hard synthetic resin. In this case, the plurality of shock-absorbing bars 33 and the plurality of broken lips 34 are preferably formed of a hard synthetic resin. The reason for this is that the hard synthetic resin is hard and has the strength to support the upper inphase member 14 while a plurality of broken lips 34 are supported by a plurality of support tubes 24, the impact applied to the upper-most force member 14 can be absorbed or mitigated efficiently.

A plurality of broken lips 34 formed in a plurality of stages in the outer periphery of the plurality of shock absorbing bars 33 are arranged in a plurality of broken lips 34 A plurality of grooves (not shown) for guiding the breakage can be formed on the outer surface of the housing.

In addition, the plurality of broken lips 34 may be assembled to the outer periphery of the plurality of shock absorbing bars 33. In this case, each of the plurality of broken lips 34 is divided into two to three The broken lips 34 divided and formed by using an assembling member such as a bolt, a rivet and a pin are fixedly attached to the outer periphery of the impact absorbing bar 33. In this case, broken lips 34 A plurality of grooves for inducing breakage can be formed on the outer surface of the substrate.

The operation of the present invention configured as described above will be described.

The operation reinforcing bar 3 constituting the shock absorber mounted on the cowl top panel 1 is designed such that the head portion of the pedestrian falling down toward the automobile in the event of a collision with the pedestrian during the operation of the vehicle is hit by the upper side 500 of the hood panel The left and right guide pins 31 formed on the bottom surface of the operation reinforcing bar 3 are in a state of being collapsed together with the upper force member 14 by impact energy applied to the upper side 500 of the hood panel ) 32 serves to guide downward movement along the left and right guide pipes 22, 23 formed on both the left and right sides of the upper surface 21 of the low-lying force member 2, Each of the plurality of shock absorbing bars 33 formed between the left and right guide pins 31 and 32 moves in the downward direction along the support pipe 24, A plurality of damaged lips 34 formed at the lower end of the plurality of broken lips 34, Absorbing bars 33 are prevented from moving downward along the support pipe 24 by being caught by the impact absorbing bar 24 and are thereby broken in order to absorb the impact applied to the operation reinforcing bar 3 Note: From the bottom to the second broken lip is shown to be broken).

A plurality of broken lips 34 formed in a plurality of stages on the outer periphery of each of the plurality of shock absorbing bars 33 constituting the laydown absorbing device in accordance with the intensity of impact applied to the hood panel upper side 500, The number of breakages may be different. For example, when the shock applied to the upper part 500 of the hood panel is weak, a plurality of damaged lips 34 formed in the outer periphery of each of the plurality of shock absorbing bars 33, It is supposed that only the damaged lip 34 is broken and the shock is absorbed. In case that the shock is very strong, a plurality of broken lips 34 formed on the outer periphery of each of the plurality of shock absorbing bars 33 are all broken, As shown in Fig.

Since the shock absorbing device formed inside the cowl top panel 1 is formed to have the same length as the width of the hood panel, the shock is absorbed in any portion of the left, right, or middle portion of the hood panel upper side 500 The left and right guide pins 31 and 32 formed on the left and right sides of the bottom surface of the operation reinforcing bar 3 are formed on the left and right sides of the upper surface 21 of the upper surface 21 of the lower force member 2, So that the same impact absorption effect is exhibited even if an impact is applied to any part of the upper side 500 of the hood panel.

Accordingly, the upper portion 500 of the hood panel where the head portion of the pedestrian is struck is elastically depressed, thereby preventing fatal injuries to the head of the pedestrian.

In addition, since it is possible to reduce the restriction on the collapsing space of the cowl top panel 1, it is possible to reduce the upper and lower spaces of the cowl, thereby providing an advantage that the design guiding of the cowl can be increased.

Figs. 1 and 2 show an example

Fig. 3 is a perspective view showing the installation state of a shock absorber mounted on a cowl top panel for explaining the present invention. Fig.

4 is an exploded perspective view of the cowl shock absorber of the present invention

Fig. 5 is a side view showing the installation state of the cowl top panel of the present invention

6 is a sectional view taken along the line A-A in Fig. 5

7 is a sectional view of the cowl shock absorber according to the present invention,

[Description of Drawings]

1: cowl top panel 11: upper panel

12: Lower panel 13: Floor panel

14: Upper Reinforce Member 2: Lower Reinforce Member

21: upper surface 22, 23: left and right guide tube

24: support tube 3: operation reinforcing bar

31, 32: left and right guide pins 33: shock absorbing bar

34: broken lip 500: upper side of the hood panel

Claims (5)

A shock absorbing device for a cowl top panel mounted on an upper portion of a hood panel of a vehicle and a lower portion of a lower portion of a windshield glass, The shock absorber of the cowl top panel comprises: A lowered force member to which both ends are fixedly attached to the bottom panel and the bottom panel so as to form a closed end face inside the cowl top panel; Left and right guide tubes protruding upward from left and right sides of the upper surface of thelower force member; A plurality of support tubes protruding from the left and right guide tubes at regular intervals; Left and right guide pins projected downward so as to be inserted into the left and right guide pipes of the left and right force members so as to be movable upward and downward and guide pins projected downward at predetermined intervals between the left and right guide pins, An operation reinforcing bar formed with a plurality of shock absorbing bars which are fitted on the tube so as to be movable up and down; And a cowl impact absorbing device for protecting a cowl for pedestrian protection. The method according to claim 1, Wherein each of the plurality of shock absorbing bars is formed with a plurality of broken lips which are broken by collision with the plurality of support pipes when the operation reinforcing bar is lowered by an impact applied to the upper side of the hood panel, A cowl shock absorber for pedestrian protection. 3. The method of claim 2, Wherein a plurality of broken lips formed in a plurality of stages in each of the plurality of shock absorbing bars are formed to have a larger outer diameter than a plurality of support pipes into which the shock absorbing bars are inserted. . The method according to claim 2 or 3, Wherein the plurality of broken lips are made of a synthetic resin material such as shock absorbing bars and integrally formed on the outer periphery of the shock absorbing bar. The method according to claim 2 or 3, Characterized in that the plurality of broken lips are fixedly attached to the outer periphery of the shock absorbing bar in a prefabricated manner.

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