KR100380368B1 - Impact Absorption Apparatus of Hood Lock for Car - Google Patents

Abstract

The present invention relates to a shock absorber of a hood lock for an automobile, and to minimize the injury of the pedestrian by minimizing the shock absorbed while the hood falls down instantaneously when the pedestrian hits the front of the vehicle. There is this. The present invention to achieve the above object is a latch bracket located in the engine room to elastically support the latch upward; A fixing pin detachably fixed to the latch bracket and maintaining a constant height of the latch bracket; A moving member fixed to the fixing pin and sliding left and right to remove the fixing pin from the latch bracket; A tension spring that pulls the fixing pin in a direction in which the fixing pin is removed from the latch bracket; An interlock lever provided rotatably in the engine room and supported by the moving member to limit the movement of the moving member; A pressure rod provided in the engine room to elastically press the interlock lever downward; A rotation lever provided to be rotatable at a lower portion of the hood to pressurize the pressure rod downward; And an impact sensing lever that is fixed to the bottom of the hood and whose end rotates the pivoting lever when a predetermined shock is applied to the top surface of the hood.

Description

Impact Absorption Apparatus of Hood Lock for Car}

The present invention relates to a shock absorber of a hood lock for an automobile, and in particular, when a body part (particularly, the head) of a pedestrian hits the hood side due to an accident in which the pedestrian hits the front of the vehicle, the hood falls downward simultaneously with the collision. By reducing the impact force transmitted to the pedestrians by configuring it to minimize the injury to pedestrians.

Generally, a hood is provided on the front side of the vehicle, and the hood can be rotated by a hinge and configured to be locked by a hood lock (striker and latch).

The hood lock is classified into a dovetail method and a fork pin method according to the engagement method.

Both the dovetail type and the fork pin type are equipped with a lock mechanism and a lift mechanism. The lock mechanism locks the striker on the hood side, and the lift mechanism lifts the hood up to 20 to 30 mm so that the hand can be inserted when the lock is released. It serves to lift.

Since the fork pin method is relatively small in size, the allowable range for the shaking of the vehicle body size degree is wide and the reliability is high.

On the other hand, 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 largely sag to one side when opened is generated in a type in which only one side of a hood that is commonly used is fixed by a pedestal.

The whistle of opening the hood also makes the car weak. In order to solve this problem, a technique of deforming the inner panel or attaching a reinforcing plate has been proposed.

When the rigidity of the hood is increased, the stiffness of the entire vehicle is improved. On the other hand, when a pedestrian hits the front of the vehicle, a part of the body (especially the head) of the pedestrian hits the hood side. There is a problem that gives a greater impact.

In order to solve this problem, recently, pedestrian protection laws for safety of pedestrians, such as mandatory installation of a shock absorber or the like, have been newly established and strengthened.

1 is a perspective view showing a hood lock of a typical vehicle, Figure 2 is a side cross-sectional view showing a hood lock of a conventional vehicle.

First, as shown in FIGS. 1 and 2, a striker 2 is fixed to the front inner end of the hood 1, and a latch coupled to the striker 2 is attached to the corresponding radiator support panel 3. (4) is fixed.

However, in the conventional hood lock, since the position of the latch is fixed, the shock is not absorbed by the hood at the time of an accident, and all are transmitted to the pedestrian, thereby causing a serious injury to the pedestrian.

The present invention was created in order to solve the above-mentioned problems, when a pedestrian collides with the front of the vehicle and a part of the body (particularly, the head) of the pedestrian hits the hood side, the impact is absorbed while the hood falls downward at the same time as the collision. It is an object of the present invention to provide a shock absorber of the vehicle hood lock that can minimize the injury of pedestrians.

1 is a perspective view showing a conventional hood lock.

Figure 2 is a side cross-sectional view showing a conventional hood lock.

Figure 3 is a cross-sectional view showing the shock absorber of the hood lock according to the present invention, the state before operation.

Figure 4 is a cross-sectional view showing a state after the operation of the shock absorber of the hood lock according to the present invention.

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

※ Explanation of symbols about main part of drawing ※

1: Hood 2: Striker

4: latch 5: engine room

110: latch bracket 111: coupling groove

112: compression spring 120: retaining pin

130: moving member 131: guide roller

131a: hinge 140: tension spring

150: interlocking lever 160: pressure bar

170: rotation lever 180: shock detection lever

190: Bracket 191: Information rail

191a: stopper

In order to achieve the above object, the present invention provides a hood lock for an automobile having a striker installed at the end of the hood and a latch installed in the engine room to be coupled to the striker, wherein the latch is located at the front end of the engine room. A latch bracket for elastically supporting upwards; A fixing pin detachably coupled to the latch bracket to maintain a constant height of the latch bracket; A moving member fixed to the fixing pin and sliding left and right to remove the fixing pin from the latch bracket; A tension spring that pulls the fixing pin in a direction in which the fixing pin is removed from the latch bracket; An interlock lever provided rotatably in the engine room and supported by the movable member to limit movement of the movable member; A pressure rod provided in the engine room to elastically press the interlock lever downward; A rotatable lever provided rotatably at a lower portion of the hood to pressurize the pressure rod downward; And an impact sensing lever that is fixed to a bottom of the hood and whose end rotates the pivoting lever when a predetermined shock is applied to the top surface of the hood.

Hereinafter, the shock absorber of the hood lock for automobiles according to the present invention will be described in detail.

3 is a cross-sectional view showing a shock absorber of the hood lock according to the present invention, a cross-sectional view showing a state before the operation, Figure 4 is a cross-sectional view showing a state after operation, showing a shock absorber of the hood lock according to the present invention. to be.

As shown in Figures 3 and 4, the shock absorbing device 100 of the hood lock of the present invention is a latch bracket 110 and the height of the latch bracket 110 and the latch bracket 110 to support the latch 4 elastically upward large. Fixing pin 120 and the fixed pin 120, fixed to the fixed member 120, the movable member 130 to be moved to the left and right, the tension spring 140 to pull the fixing pin 120, and the movable member 130 Supported by the interlocking lever 150 to limit the movement of the moving member 130, the pressure rod 160 for pressing the interlocking lever 150 elastically downward, and pressurizing the pressure rod 160 downward The rotation lever 170 and the impact detection lever 180 for rotating the rotation lever 170 when a predetermined impact is applied to the upper surface of the hood (1).

Referring to the configuration of the shock absorber of the hood lock according to the present invention in more detail, first, a striker (2) is provided at the front end of the hood (1), the engine room (5) to be coupled to the striker (2) The latch 4 is provided.

The latch 4 is supported upward by the latch bracket 110, and a compression spring 112 is installed below the latch bracket 110.

The end of the fixing pin 120 may be detachably coupled to the coupling groove 111 of the latch bracket 110, and is configured to maintain a constant height of the latch bracket 110. In other words, when the end of the fixing pin 120 is inserted into the coupling groove 111 of the latch bracket 110, the latch bracket 110 maintains a constant height, and the end of the fixing pin 120 is latch bracket 110. When removed from the coupling groove 111 of the latch bracket 110 is configured to fall down. Here, the end of the fixing pin 120 is to be inserted deeply into the coupling groove 111 to ensure that the latch bracket 110 is firmly supported.

The fixing pin 120 is fixed to the moving member 130, and the moving member 130 is configured to slide left and right. In the middle of the moving member 130, the guide roller 131 is hinged (131a) is coupled, the guide roller 131 is configured to move along the guide rail 191 of the bracket 190. In other words, the end of the fixing pin 120 is released from the latch bracket 110 while the movable member 130 slides left and right. The upper side of the movable member 130 is formed with a locking jaw 132 is fixed to the end of the first interlocking lever 151.

A tension spring 140 is installed between the movable member 130 and the bracket 190, and the tension spring 140 is fixed in the direction of the arrow, that is, the fixing pin 120 is removed from the latch bracket 110. It is configured to pull the pin 120.

The interlocking levers 150: 151 and 152 are rotatably provided in the engine room 5 and include a first interlocking lever 151 and a second interlocking lever 152. First, the first interlocking lever 151 is supported by the locking jaw 132 and the first interlocking lever 151 is supported by the second interlocking lever 152.

The interlocking levers 150: 151 and 152 may be supported by each other so that the movable member 130 may not be arbitrarily slid.

The pressurizing rod 160 is provided in the engine room 5 located directly above the second interlocking lever 152, and is configured to press the second interlocking lever 152 downward to rotate clockwise.

The rotation lever 170 is rotatably installed at the lower portion of the hood 1 and is configured to press the pressure rod 160 downward while being rotated.

The shock detection lever 180 is configured such that its upper side is fixed to the bottom of the hood 1 and its lower end is supported by the rotation lever 170. The shock detection lever 180 is configured to rotate the rotation lever 170 counterclockwise while its end is rotated when a predetermined shock is applied to the upper surface of the hood 1 in an accident.

5 is a cross-sectional view taken along line AA of FIG. 3, a pair of guide rollers 131 are hinged to the moving member 130, and the guide rollers 131 move along the guide rails 191. It is configured to be. The guide rail 191 is fixed to the bracket 190 fixed to the bottom surface of the engine room (5). The stopper 191a is bent at the end of the guide rail 191 so that the moving member 130 does not fall out arbitrarily.

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

3 shows a state before the pedestrian hits the vehicle. In this state, when the pedestrian hits the front of the vehicle while the vehicle is running, the head of the pedestrian hits the hood 1 and the impact force generated at this time. The hood 1 is pressed downward.

As the impact is applied to a predetermined portion of the hood 1, the end of the impact detection lever 180 fixed to the bottom of the hood 1 is rotated, thereby rotating the rotation lever 170 counterclockwise.

The rotation lever 170 rotates and presses the pressure rod 160 downward. At this time, by the elastic force of the spring 161, the pressure rod 160 is elastically pressed downwards and the second interlocking lever 152 is clockwise. At the same time, the second interlocking lever 152 rotates the first interlocking lever 151 counterclockwise again.

As the first interlocking lever 151 is rotated in the counterclockwise direction, the end of the interlocking lever 151 is removed from the locking jaw 132, and at this time, the moving member 130 is moved in the direction of the arrow by the tensile force of the tension spring 140. Is pulled. In other words, when the tension spring 140 pulls the movable member 130, the movable member 130 is slid in the direction of the arrow by the guide roller 131 and the guide rail 191.

As the movable member 130 slides, the end of the fixing pin 120 fixed to the movable member 130 is removed from the coupling groove 111 of the latch bracket 110.

As the fixing pin 120 is removed from the coupling groove 111, the latch bracket 110 supported by the fixing pin 120 falls downward. Here, the latch bracket 110 is elastically dropped by the compression spring 112.

As the latch bracket 110 falls, the latch 4, the striker 2, and the hood 1 supported thereon also fall downward.

As described above, when the pedestrian hits the hood 1, the latch bracket 110 supporting the latch 4 instantaneously falls downward and at the same time the hood 1 falls, thereby cushioning the pedestrian. It will not be delivered.

As described above, in the present invention, when a part of a pedestrian's body (particularly, the head) hits the hood side due to an accident in which the pedestrian hits the front of the vehicle, the impact force transmitted to the pedestrian is configured to fall down instantaneously with the collision. By reducing it, it is possible to minimize the injury of pedestrians.

Claims (2)

In the hood lock for automobile having a striker (2) provided at the end of the hood (1) and a latch (4) installed in the engine room (5) to be coupled to the striker (2), A latch bracket (110) positioned at the front end of the engine room (5) to elastically support the latch (4) upwardly; A fixing pin (120) detachably coupled to the latch bracket (110) to maintain a constant height of the latch bracket (110); A moving member (130) fixed to the fixing pin (120) and detaching the fixing pin (120) from the latch bracket (110) while being slid left and right; A tension spring 140 that pulls the fixing pin 120 in a direction in which the fixing pin 120 is removed from the latch bracket 110; An interlock lever 150 provided rotatably in the engine room 5 and supported by the moving member 130 to restrict movement of the moving member 130; A pressurizing rod (160) provided in the engine room (5) to elastically pressurize the linkage lever (150) downward; Rotating lever 170 is provided to be rotatable in the lower portion of the hood (1) for pressing the pressure rod 160 downward; And Is fixed to the bottom surface of the hood 1, when the predetermined impact is applied to the top surface of the hood 1 end is configured for the impact lever 180 for rotating the pivoting lever 170 Hood lock shock absorber. The method of claim 1, wherein the movable member 130 is fixed to the guide roller 131, the guide roller 131 is impacted by the hood lock for a vehicle, characterized in that configured to move along the guide rail 191. Absorber.