KR20020044308A - Impact Absorbing Apparatus of Hood for Car - Google Patents

Abstract

PURPOSE: A shock absorbing apparatus of a hood for a vehicle is provided to minimize the injury on a walker colliding against a vehicle by making a hood of a vehicle deformed downward or lowered when the walker collides against the hood. CONSTITUTION: A shock absorbing apparatus of a hood for a vehicle includes a support panel(10) fixed on an outer panel(2) via a connecting bar(14) and having slots(12) on both sides, a first elastic member(20) installed between the support panel and the outer panel to downward pull the outer panel, a pair of shock transmitting levers(30) rotatably combined to the slots and installed on the inner panel, shock sensing levers(40) contacting to the inner face of the outer panel, and a second elastic member(50) installed between the inner panel and the shock transmitting lever. If the body of a walker collides against the outer panel, the outer panel is pressurized downward by the shock. The shock sensing lever is separated from the shock transmitting lever, and the shock transmitting lever rotates by the restorative force of the second elastic member. The support panel is lowered, and the outer panel is pulled downward by the support panel. Therefore, the outer panel is deformed downward.

Description

Impact Absorbing Apparatus of Hood for Car}

The present invention relates to a shock absorber of a hood for an automobile, and in particular, when a vehicle and a pedestrian collide with each other so that a part of the body (particularly, the head) of the pedestrian hits the hood side, the hood falls down or deforms at the same time as the collision. The present invention relates to a shock absorber of a hood for an automobile, which minimizes the impact force transmitted to a pedestrian in a collision with a vehicle, thereby protecting the pedestrian more safely.

In general, the hood protects the engine in the engine room, and has a function of sound insulation of the engine noise, electromagnetic wave resistance, and pedestrian protection. Although there is no role as a strength component of the vehicle body, it is necessary to secure the outer plate rigidity and the torsional rigidity to some extent because of the opening and closing operation. Although most steel sheets are used as materials, thinning of the steel sheet and externalizing of the resin are required in order to improve rust prevention performance and light weight.

The hood is composed of a hood panel, a hood hinge, a hood lock, a bumper rubber and a striker, and the hood panel is composed of an outer panel (outer panel), an inner panel (inner panel), and a reinforcement panel (reinforcement).

Outer panel and inner panel can be joined together by flange type and hemming type. In both methods, the outer panel is a closed section structure together with the inner panel, so the rigidity is high and most automobiles have such a structure.

One of the most important performances required in the hood is torsional stiffness. Torsional stiffness is evaluated as a large or small amount of deformation when twisted.

When the torsional rigidity of the hood is low, that is, when the deformation amount is large, a phenomenon in which a large amount of deformation is fixed to one side of a hood that is commonly used by a pedestal causes a large sag to one side when the hood is opened.

In addition, the whistling feeling of opening the hood gives the body a weak feeling. In order to solve this problem, a technique of deforming the inner panel or attaching a reinforcing plate has been proposed.

While the rigidity of the hood is increased in this way, there is a positive aspect that the stiffness of the vehicle is improved, whereas in the frontal collision with the pedestrian, a part of the body of the pedestrian (particularly, the head) hits the hood side. There is a problem that gives a great impact to.

In order to solve this problem, pedestrian protection laws for the safety of pedestrians, such as mandatory installation of a shock absorber on the hood side, have been intensified.

1 is a perspective view showing a hood of a conventional vehicle, Figure 2 is a cross-sectional view taken along the line A-A of FIG.

1 and 2, a hood 1 is provided on the upper side of the engine room to protect the engine and the like. The hood 1 has an outer panel 2 and an outer panel 2 on the outside. Inner panel 3 is attached to the inside of the).

The inner panel 3 is bent into a predetermined shape, and a filler 4 (pad) is attached between the outer panel 2 and the inner panel 3.

However, the conventional hood has a structure in which the inner panel is fixed directly to the bottom of the outer panel through the filler, and when a part of the pedestrian's body (especially the head) hits the hood side due to a frontal collision between the vehicle and the pedestrian. The impact on the pedestrian is not effectively absorbed by the outer panel and the inner panel, causing a problem of causing serious injury to the pedestrian.

The present invention was created in order to solve the above-mentioned problems, and when a frontal collision between a vehicle and a pedestrian, a part of the body of the pedestrian (particularly, the head) hits the hood side. In this case, the hood is moved downwards at the same time as the collision. It is an object of the present invention to provide a shock absorber of a hood for an automobile that can be pressed while being deformed or deformed to minimize a pedestrian's injury in a collision with a vehicle.

1 is a perspective view showing a hood of a conventional vehicle.

2 is a cross-sectional view taken along the line A-A of FIG.

Figure 3 is a longitudinal cross-sectional view showing a shock buffer of the hood for a vehicle according to the present invention, the hood before the collision of the vehicle.

Figure 4 is a longitudinal sectional view showing the shock absorber of the hood for a vehicle according to the present invention, the hood after the collision of the vehicle.

※ Explanation of symbols about main part of drawing ※

2: outer panel 3: inner panel

10 support plate 12 slit groove

20: first elastic member 30: impact transfer lever

40: impact detection lever 50: second elastic member

60: operating lever 70: third elastic member

80: leaf spring 90: operating plate

As a technical configuration for achieving the above object, the present invention is an automobile hood comprising an outer panel and an inner panel provided on the lower side of the outer panel, wherein the outer panel is fixed to the outer panel via a connecting rod and slotted on both sides. A support plate formed with a groove; A first elastic member mounted between the support plate and the outer panel to pull the outer panel downward; A pair of impact transfer levers, one end of which is rotatably mounted in the slot-shaped groove of the support plate and the center of which is rotatably mounted on the inner panel; An impact sensing lever, one end of which is fitted to the other end of each of the impact transmission levers, a center portion of which is rotatably mounted on the outer panel, and the other end of which is bent to contact the inside of the outer panel; And a second elastic member mounted between the inner panel and the impact transfer lever to provide an elastic force in a direction to maintain the state in which the impact transfer lever is caught by the impact detection lever. By providing a shock absorber.

Exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

3 is a longitudinal sectional view showing a shock absorber of a hood for a vehicle according to the present invention, the hood before the collision of the vehicle, Figure 4 is a shock absorber of a hood for a vehicle according to the present invention, Longitudinal sectional view showing the state of a hood after a crash. Parts left and right symmetric in the description of the present invention will be described only one side for convenience.

The apparatus of the present invention is installed in a normal automotive hood provided with an inner panel 3 inside the outer panel 2.

The present invention includes a working plate 90 fixed to the lower inner surface of the outer panel 2 by welding or the like, and at the center of the lower surface of the operating plate 90, a connecting table 14 is integrally fixed to the lower side. The predetermined length is extended.

The support plate 10 is integrally fixed to the lower end of the connecting table 14, and the support plate 10 is positioned below the inner panel 3, and both sides of the support plate 10, that is, the longitudinal direction of the vehicle body. Slotted grooves 12 are formed in the upper surfaces of the front and rear end portions with respect to the direction of the slotted grooves 12 along the longitudinal direction of the vehicle body.

In addition, the connecting rod 14 is equipped with a first elastic member 20 made of an elastic coil spring or the like, and one end of the first elastic member 20 is in close contact with the lower surface of the operating plate 90. The other end is in close contact with the upper surface of the support plate 10 and the first elastic member 20 is mounted in an expanded state, thereby applying an elastic force in the direction of pulling the operating plate 90 downward.

In addition, one end of the impact transfer lever 30 is connected to the slot-shaped groove 12 of the support plate 10, respectively, and the impact transfer lever 30 is mounted to the slot-type groove 12 via a pin. This allows the impact transfer lever 30 to pivot about the slotted groove 12 via the pin, and the pin is mounted to slide in the longitudinal direction along the slotted groove 12. . In addition, the center portion of the impact transfer lever 30 is rotatably mounted to the upper portion of the inner panel 3 via a pin, and the other end of the impact transfer lever 30 extends a predetermined length toward the outer panel 2. .

The other end of the shock transfer lever 30 is fitted with one end of the shock detection lever 40, the shock detection lever 40 is mounted so that the center portion is rotatable to the outer panel 2 via a pin. The other end of the impact detection lever 40 is bent to contact the inside of the outer panel 2. At this time, the end of the impact detection lever 40 is hung to push the end of the impact transmission lever 30 from the top to the bottom so that the shock transfer lever 30 is rotated upward toward the impact detection lever 40 To prevent them.

In addition, the impact transmission lever 30 is provided with a predetermined elastic force by the second elastic member 50, the second elastic member 50, one end thereof is supported by the inner panel 3 and the other end thereof It is supported by the impact transfer lever 30 and is mounted in a contracted state so that one end of the impact transfer lever 30 is maintained in a state fitted to one end of the impact detection lever 40.

In addition, one end is rotatably mounted to both ends of the operating plate 90 via a pin, and the other end is further mounted to the inner panel 3 so as to be rotatable via a pin. It is preferable that the operating lever 60 is provided with a predetermined elastic force by the third elastic member 70, one end of the third elastic member 70 is supported by the inner panel (3) The other end is supported by the operation lever 60 so that the operation lever 60 is installed to provide an elastic force in a direction of rotating downward with respect to the center point of rotation of the inner panel 3 side.

In addition, it is preferable to install plate springs 80 at both end portions of the operating plate 90, the plate springs 80 of the impact detection lever 40 in contact with the inner side of the outer panel 2; Support to prevent the end from moving downward.

Referring to the shock absorber of the hood for a vehicle according to the present invention configured as described above are as follows.

FIG. 3 illustrates a state of a hood before a collision of a vehicle, and when a vehicle collides with a pedestrian in this state, a part of the body of the pedestrian hits the hood 1, more accurately, the outer panel 2, and the impact force generated at this time. The outer panel 2 is pressed downward.

As the impact is applied to a predetermined portion of the outer panel 2, the impact detection lever 40 is separated from the impact transfer lever 30, whereby the impact transfer lever 30 is formed of the second elastic member 50. It rotates by elastic restoring force, and the support plate 10 is lowered by the rotation of the impact transfer lever 30.

In addition, as the support plate 10 moves downward, its behavior serves to pull the outer panel 2 downward through the connecting table 14. In addition, the first elastic member 20 mounted between the support plate 10 and the operation plate 90 also applies a force to pull the outer panel 2 downward through the operation plate 90.

That is, the outer panel 2 is deformed downward, thereby buffering the impact force, thereby effectively preventing a large impact from being transmitted to the pedestrian.

In addition, the operation lever 60, which is connected to the operation plate 90 fixed to the inside of the outer panel 2, also pulls the operation plate 90 downward by the third elastic member 70 so as to pull out the outer plate. The panel 2 helps to deform downwards.

As described above, according to the shock absorber of the hood for an automobile according to the present invention, when the pedestrian collides with the hood while maintaining the rigidity of the hood, the pedestrian is sensed by deforming the impact panel according to the collision. It has the effect of protecting the pedestrians more safely by minimizing the impact force applied to them.

In addition, the present invention is simple in configuration, excellent in performance, and has the effect of realizing weight reduction.

Claims (3)

In the hood for the automobile which consists of the outer panel 2 and the inner panel 3 provided below this outer panel 2, A support plate 10 fixed to the outer panel 2 through a connecting table 14 and having slotted grooves 12 formed at both sides thereof; A first elastic member 20 mounted between the support plate 10 and the outer panel 2 so as to pull the outer panel 2 downward; A pair of shock transfer levers (30), one end of which is rotatably mounted in the slot-shaped groove (12) of the support plate (10) and the center of which is rotatably mounted on the inner panel (3); One end is fitted to the other end of each of the impact transmission lever 30, the center portion is mounted so as to be rotatable to the outer panel 2, the other end is bent and the impact sensing lever (in contact with the inside of the outer panel 2) 40); And, A second elastic member mounted between the inner panel 3 and the impact transfer lever 30 to provide an elastic force in a direction to maintain the state in which the impact transfer lever 30 is caught by the impact detection lever 40; 50); Shock absorber of the hood for an automobile, characterized in that it comprises a. The operating lever 60 of claim 1, wherein one end is rotatably mounted inside the outer panel 2, and the other end is rotatably mounted to the inner panel 3, respectively. ) Further includes a third elastic member 70 mounted between the inner panel 3 and the operating lever 60 to provide an elastic force in a direction of rotating downward about the pivot point of the inner panel 3 side. Shock absorber of the hood for an automobile characterized in that. The hood of an automobile according to claim 1, wherein the impact detection lever (40) is supported by a leaf spring (80) installed at the end of the outer panel (2) in contact with the inner side of the outer panel (2). Shock absorber.