KR100380374B1 - Hood Locking Apparatus for Impact Absorbing of Car - Google Patents

Abstract

An object of the present invention is to minimize the injury of pedestrians during a collision by allowing the hood to be pressed down by the impact force when a body part (particularly, the head) of the pedestrian hits the hood side during a frontal collision of the vehicle. The present invention provides a shock-absorbing hood lock device for a vehicle.

The present invention for achieving the above object is provided with a striker (2) is provided at the front end of the vehicle hood (1) and the hood is provided with a latch (4) coupled to the striker to prevent opening of the hood at the front end of the engine room In the locking device, an impact sensing lever (5) contacting the inner surface of the hood is provided so as to be rotated by the impact force applied to the hood, and a lower portion of the impact sensing lever (7) is attached to the bottom of the hood (7). A rack gear 6 geared to one surface of the pinion gear 8 inserted therein is provided, and a lifting member 9 having a rack 9a geared to the other surface of the pinion gear is provided inside the housing. , Directly below the elevating member is provided with an operating rod 10 elastically installed with a compression spring (11) built into the bracket 16, the bottom of the operating rod is provided with a rotation lever 12, the rotation lever Other A locking lever 13 having a locking protrusion 14 is provided at a front end thereof, and a locking groove 4a to which a locking protrusion formed at the locking lever is coupled is provided at a lower end of the latch.

Description

Hood Locking Apparatus for Impact Absorbing of Car}

The present invention relates to a hood lock device for a shock absorber of a vehicle, and more particularly, when the vehicle and the pedestrian collide with each other and the body part of the pedestrian hits the hood side, the collision is configured to move or deform the hood at the same time as the collision. The present invention relates to a shock-absorbing hood lock device for a vehicle that can protect the pedestrians more safely by minimizing the impact force transmitted to the city pedestrians.

Generally, a hood panel is provided on the front side of the vehicle, and the hood panel may be rotated by a hinge and configured to be locked by a hood lock.

The hood lock is classified into a dovetail type and a fork pin type according to how the lock is engaged.

Both the dovetail type and the fork pin type are equipped with a lock mechanism and a lift mechanism. The lock mechanism first locks the striker on the hood side, and the lift mechanism lifts the hood up 20 to 30 mm to allow hands to be released when the lock is released. Play a role.

The fork pin method is relatively small in size, and has been widely adopted in recent years because the tolerance range of the body size is wide and the reliability is high.

In terms of the design of the hood lock, the hood lock is a part that restrains the hood and the body, and particularly in the case of the rear opening type hood, a role imposed on the lock for safety during frontal collision is large.

Therefore, the shape, material, heat treatment, etc. should be appropriate in consideration of the impact fracture strength and durability.

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.

If the torsional rigidity of the hood is low, that is, the deformation amount is large, the type of fixing only one side of the hood, which is usually used with a pedestal, causes a drooping phenomenon to one side when it is opened. Given. In order to solve this problem, a technique of deforming the shape of the inner plate or attaching a reinforcing plate has been proposed.

When the rigidity of the hood is increased as described above, there is a positive aspect in that the rigidity of the vehicle is improved, but when the frontal collision with the pedestrian has a big impact on the pedestrian.

In order to solve this problem, recently, pedestrian protection laws for safety of pedestrians, such as mandatory installation of shock absorbers that can cushion shocks on the engine hood side, are being tightened.

1 is a perspective view showing a general hood lock, Figure 2 is a side view showing a conventional hood lock.

First, as shown in FIG. 1, a striker 2 is fixed to an inner end of the hood 1, and a latch 4 coupled to the striker 2 is attached to a radiator support panel 3 corresponding thereto. Is fixed.

However, the conventional hood lock is merely a structure for coupling / disengaging the striker 2 and the latch 4, and when a body part of the pedestrian hits the hood 1 side due to a frontal collision with the pedestrian while the vehicle is running. There is a problem that can not minimize the impact on the.

The present invention has been invented to solve the above-mentioned problems, the object of which is that when the body part (particularly, the head) of the pedestrian hits the hood side during the frontal collision of the vehicle, the latch coupled to the striker by the impact force downward The present invention provides a shock-absorbing hood lock device for a vehicle that can be pressed and cushioned to minimize pedestrian injuries during a collision.

1 is a perspective view of a hood lock device of a typical vehicle.

Figure 2 is a cross-sectional view of the hood lock device of a conventional vehicle.

3 is a cross-sectional view showing a state before operation of the shock-absorbing hood lock device of a vehicle according to the present invention.

Figure 4 is a cross-sectional view showing a state after the shock-absorbing hood lock device of the vehicle according to the invention.

※ Explanation of symbols about main part of drawing ※

1: hood 2: striker

4a: latching groove 4: latch

5: shock detection lever 6: rack gear

7: housing 8: pinion gear

9a: rack 9: elevating member

10: working rod 11: compression spring

12: rotation lever 13: locking lever

14: engaging projection 15: tension spring

16: bracket

Referring to the characteristic configuration of the present invention for achieving the above object is as follows.

The present invention provides a hood lock device having a striker provided at the front end of an automobile hood and a latch coupled to the striker at the front end of an engine room to prevent the hood from being opened, such that the striker is rotated by an impact force applied to the hood. An impact sensing lever in contact with the inner surface of the hood is provided, and a lower gear of the impact sensing lever is provided with a rack gear geared to one surface of the pinion gear inserted into the housing attached to the bottom of the hood. A lifting member having a rack gear coupled to the other side of the pinion gear is provided, and directly below the lifting member is provided with an operating rod elastically installed with a compression spring built into the bracket, and a rotation lever is provided on the bottom of the operating rod. On the other side of the pivoting lever, a locking lever provided with a locking projection at the distal end is provided. The lower end value is characterized in that the locking groove is formed in the locking projection group is bonded engaging lever provided.

In addition, a tension spring is provided between the latch and the body panel so that the latch is pulled downward.

When described in detail with reference to the accompanying drawings showing the present invention having such features as follows.

3 is a cross-sectional view showing a state before the shock-absorbing hood lock device of the vehicle according to the invention, Figure 4 is a cross-sectional view showing a state after the shock-absorbing hood lock device of the vehicle according to the invention.

As referred to herein, the hood lock device of the present invention has a shock sensing lever (5) is installed on the bottom surface of the vehicle hood (1) provided with a striker (2) at the front end to rotate when an impact force is applied to the hood (1) A housing 7 is provided at the bottom of the hood 1 at which the lower end of the impact detection lever 5 is located, and a pinion gear 8 is rotatably installed at the inner center of the housing 7.

Meanwhile, a rack gear 6 geared to one surface of the pinion gear 8 is coupled to a lower end of the impact detection lever 5, and a guide is provided at a lower end of the impact detection lever 5 to which the rack gear 6 is coupled. It is preferable to form the long hole (5a) because the rotational force is generated when the impact detection lever 5 is operated by the impact, so that the rack gear (6) moved by the rotational force to move smoothly. .

The moving member 9 is inserted into the housing 7 from below, and the lower end of the moving member 9 is exposed to the outside of the housing 7 and inserted into the housing 7. Rack (9a) formed in the) is gear-coupled to the other surface of the pinion gear (7).

In addition, an operating rod 10 is provided inside the engine room so as to be positioned directly under the moving member 9 when the hood 1 is closed, and the operating rod 10 is inserted into the bracket 16, and the bracket Inside the 16, the compression spring 15 is built in the operating rod 10 to keep the operating rod 10 moved upward in the state where the external force is removed.

In addition, one end of the pivoting lever 12 that is pivotally coupled to the lower portion of the operating rod 10 is in contact, and the other end of the pivoting lever 12 is inserted into the fixing groove 13a formed in the locking lever 13. have.

The lower end of the locking lever 13 is formed with a locking protrusion 14 to be caught by the latch 4, and the latch 4 is formed with a locking groove 4a into which the locking protrusion 14 is inserted.

A tension spring 15 is installed between the latch 4 and the body panel to pull the latch 4 downward after the locking protrusion 14 is separated from the locking groove 4a.

Referring to the operation of the shock-absorbing hood lock device of a vehicle according to the present invention configured as described above are as follows.

3 is a state in which no impact force is generated in the hood 1, and the striker 2 provided at the tip of the hood 1 is fixed to the latch 4 provided in the engine room and is formed at the lower portion of the latch 4. The locking projection 14 formed at the lower end of the locking lever 13 is inserted into the groove 4a to prevent the latch 4 from moving downward.

In this state, when the pedestrian collides with the hood 1 while driving the vehicle, the impact force moves the hood 1 downward as shown in FIG. 4, and the impact detection lever provided on the bottom of the hood 1 Since 5) is rotated, one side of the impact detection lever 5 is lowered to the lower side, that is, the other end, that is, the front end portion coupled to the rack gear 6 is rotated to the upper portion, the rack gear 6 is raised.

When the rack gear 6 rises, the pinion gear 8 geared to the rack gear 6 rotates inside the housing 7, so that the rack gear geared to the other side of the pinion gear 8 is formed. The lifting member 9 provided with 9a) is to be lowered.

When the elevating member 9 is lowered, the compression spring 11 is compressed while moving the operation rod 10 located directly below the lower end of the operation rod 10. Rotated).

When the rotation lever 12 is rotated, the locking protrusion 14 formed at the lower end of the rotation lever 12 is separated from the locking groove 4a formed in the latch 4.

As such, when the locking protrusion 14 is separated from the locking groove 4a formed at the bottom of the latch 4, the latch 4 is moved downward by the restoring force of the tension spring 15 provided between the body panels. When the impact force is generated in the hood 1 due to the frontal collision, the latch 4 supporting the hood 1 is moved downward, so that interference does not occur when the hood 1 is crushed downward, which is applied to the pedestrian. The impact force can be minimized.

As described above, the present invention provides a pedestrian by minimizing the impact force given to the pedestrian by installing a shock detection lever inside the hood and moving the latch fixing the striker by the impact detection lever during the frontal collision of the vehicle. There is a unique effect that can be safely protected.

Claims (2)

In the hood lock device, a striker (2) is provided at the tip of the vehicle hood (1), and a latch (4) coupled to the striker is provided at the tip of the engine room to prevent the hood from being opened. A shock detection lever 5 is provided on the inner surface of the hood so as to be rotated by the impact force applied to the hood, and a pinion gear inserted into the housing 7 attached to the bottom of the hood is provided at the lower end of the shock detection lever. A rack gear 6 geared to one surface of the gear 8 is provided, and a lifting member 9 having a rack 9a geared to the other surface of the pinion gear is provided inside the housing. Directly below is provided with an actuating rod 10 elastically installed with a compression spring 11 embedded in the bracket 16, the bottom of the actuating rod is provided with a pivoting lever 12, the other end of the pivoting lever A locking lever 13 having a locking protrusion 14 is provided, and the lower end of the latch is provided with a locking groove 4a to which a locking protrusion formed on the locking lever is coupled. The shock-absorbing hood lock device according to claim 1, wherein a tension spring (15) is provided between the latch and the body panel to pull the latch downward.