KR20180070396A - Hood latch apparatus for vehicle - Google Patents

Abstract

The present invention relates to a hood latch apparatus for a vehicle, including: a main frame extending to have a preset length in a vertical direction and provided with a striker guiding groove; a clue provided with an upper end jaw, a lower end jaw, and an accommodating groove formed between the upper end jaw and the lower end jaw to accommodate a striker entering the guiding groove and rotatably mounted on the main frame; and a pole provided with an upper end stopper and a lower end stopper and rotatably mounted on the main frame, in which the upper end stopper is formed such that the upper end jaw is locked in a case where the striker accommodated in the accommodating groove is disposed at a preset reference position of the guiding groove and the guiding groove has a buffer section extending downwards by a preset distance from the reference position.

Description

[0001] HOOD LATCH APPARATUS FOR VEHICLE [0002]

The present invention relates to a vehicular hood latch device.

Generally, an engine room is provided at the front portion of the vehicle, and the engine room is opened and closed by a hood. The hood functions not only to open and close the engine room but also to block engine noise by blocking the engine room. Both left and right sides of the rear end are coupled to the upper part of the engine room through the hood hinge assembly and rotated around the hood hinge assembly The engine room is opened and closed.

However, since the hood is known to cause a serious injury to a pedestrian when a pedestrian collision occurs, an active hood system which secures a space for absorbing the impact energy of the pedestrian between the hood and the engine room when a pedestrian collision occurs, Is applied.

The active hood device is a device for lifting the rear end (or the hood hinge assembly) of the hood to protect the pedestrian in the event of a collision, and is a safety device for pedestrian protection which buffers the impact of the pedestrian while reducing the injury value. When the front bumper sensor senses a pedestrian collision when a pedestrian collides with the front bumper, the controller activates the actuator according to the sensor signal to raise the rear end of the hood so that a buffer space is provided between the hood and the engine room .

Such an active hood device is required to have a sensor, an actuator, a controller, and the like in order to buffer the impact of a pedestrian, which requires a large installation space and a large installation space.

SUMMARY OF THE INVENTION The present invention is directed to a hood latch device for a vehicle which is improved in structure to reduce weight, installation cost, and installation space.

According to another aspect of the present invention, there is provided a vehicular hood latch device including: a main frame extending along a vertical direction to have a predetermined length and having a guide groove for guiding the striker; A clasp rotatably mounted on the main frame, the closure having a top locking jaw, a bottom locking jaw, and a receiving groove formed between the top locking jaw and the bottom locking jaw to receive the striker that has entered the guide groove; A pole having a top stopper and a bottom stopper and rotatably mounted on the main frame; Wherein the upper stopper is formed such that when the struter accommodated in the accommodating groove is disposed at a predetermined reference position of the guide groove, the upper stopper is hooked, and the guide groove is formed at a lower side from the reference position by a predetermined distance Lt; RTI ID = 0.0 > direction. ≪ / RTI >

Preferably, when the pawl is pushed by the clue and rotated by a predetermined angle or more in the other direction opposite to the one direction, the lower end stopper is hooked so that the striker is moved to the buffer section So that it can be blocked from entering.

Preferably, the cluture spring provides elastic restoring force such that the closure rotates in a predetermined direction; And a pole spring that provides an elastic restoring force such that the pole is rotated in the one direction.

Preferably, the pole further includes an intermediate stopper formed between the upper stopper and the lower end stopper so as to be pushed by the lower stopping jaw when the clue is rotated.

Preferably, the intermediate stopper is formed such that when the upper stopper is pushed by the lower stopping jaw, the pawl is rotated by a predetermined angle in the other direction opposite to the one direction, and the predetermined angle is set such that the upper stopping jaw and the upper Is an angle between the stoppers capable of forming a wider gap than the diameter of the striker.

Preferably, the upper stopping jaw is formed to be spaced apart from the intermediate stopper by a predetermined gap with respect to the direction of the rotation axis of the clue.

Preferably, the clue is mounted on one side of the main frame so that the receiving groove overlaps the guide groove, and the pawl is pivotally connected to the main frame, opposite to the one side, such that the upper stopper and the lower stopper face the clue, As shown in FIG.

The vehicular hood latch apparatus according to the present invention has the following effects.

First, according to the present invention, when the hood collapses due to collision with the pedestrian, the striker can be moved so that the hood can descend, thereby buffering the impact applied to the pedestrian.

Second, since the shock absorber function can be introduced without electric parts such as an actuator, a sensor, and a controller, the present invention can reduce weight, installation cost, installation space, and the like compared to the conventional active hood device.

1 is a front view of a vehicular hood latch apparatus according to a preferred embodiment of the present invention;
2 is a rear view of the hood latch device shown in Fig.
Fig. 3 is a view for explaining the relationship between the upper stopping jaw of the clue and the intermediate stopper of the pawl; Fig.
4A to 4E are views showing the striker being disposed at the reference position when the hood is closed;
5 is a view for explaining the relationship between the lower stopper of the closure and the intermediate stopper of the pole.
6 is a view for explaining a relationship between a lower stopper of a closure and a lower stopper of a pole;
Fig. 7 is a diagram showing a state in which a striker enters a buffer zone at the time of a pedestrian collision; Fig.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

In the drawings, the size of each element or a specific part constituting the element is exaggerated, omitted or schematically shown for convenience and clarity of description. Therefore, the size of each component does not entirely reflect the actual size. In the following description, it is to be understood that the detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a front view of a vehicular hood latch apparatus according to a preferred embodiment of the present invention, and FIG. 2 is a rear view of the hood latch apparatus shown in FIG. 1. FIG.

1 and 2, a vehicular hood latch apparatus 1 (hereinafter referred to as a hood latch apparatus 1) according to a preferred embodiment of the present invention includes a main frame 10, a hook 20 A lever 30, a clue 40, a pole 50, a protection cap 60, and the like.

First, the main frame 10 forms the skeleton of the hood latch device 1 and is fixed to the vehicle body. The main frame 10 has guide grooves 12 formed in the vertical direction of the main frame 10 and guiding the striker S of the hood (not shown), as shown in FIG. The guide groove 12 is formed to have a buffer section B extending downward by a predetermined distance from a predetermined reference position P1 (see Fig. 4E).

The reference position P1 is a position at which the normal striker S in which no pedestrian collision occurs is disposed. The buffering period B is an emergency position in which the striker S is disposed when a pedestrian impact occurs. Concrete details of the arrangement of the strainer in the reference position (P1) and the buffer section (B) of the guide groove (12) will be described later.

Next, the hook 20 is rotatably mounted on the back surface of the main frame 10, as shown in Fig. Such a hook 20 can close the guide groove 12 so that the striker S is not separated from the guide groove 12, as shown in Fig.

The hook 20 is provided with an elastic restoring force from the hook return spring 70. 2, the hook return spring 70 is mounted on the rotary shaft of the hook 20, one end is fixed to the hook 20, and the other end is fixed to the main frame 10. [ Such a hook return spring 70 is a spring that allows the hook 20 to be restored to its original position when the hook 20 is rotated by the lever 30 to be described later and the guide groove 12 is opened .

Next, the lever 30 is rotatably mounted on the back surface of the main frame 10, as shown in Fig. The lever 30 is engaged with the hook 20 so that it can be rotated about the axis of rotation of the hook 20 together with the hook 20. Such a lever 30 can rotationally drive the hook 20 so that the guide groove 12 is opened. Therefore, the striker S can be drawn out into the guide groove 12 by driving the hook 20 to rotate by using the lever 30.

Fig. 3 is a view for explaining the relationship between the upper stopping jaw of the clue and the intermediate stopper of the pawl, Figs. 4a to 4e are views showing the striker being disposed at the reference position when the hood is closed, 6 is a view for explaining the relationship between the lower end stop of the closure and the lower end stopper of the pawl. Fig.

1, the clue 40 is rotatable on the front face of the main frame 10 so that the rotational shaft 47 is positioned on one side of the main frame 10 with respect to the guide groove 12, Respectively. A closure spring 80 is mounted on the rotary shaft 47 of the clue 40, as shown in Fig. One end of the clock return spring 80 is fixed to the spring hanger 48 provided at the clue 40 and the other end is fixed to the main frame 10. [ Such a clear return spring 80 provides an elastic restoring force so that the clue 40 can be rotated clockwise when the clue 40 is rotated counterclockwise.

As shown in Fig. 1, the closure 40 may include a top stopping jaw 41, a bottom stopping jaw 43, a receiving groove 45, and the like.

The upper stopping jaw 41 is formed so as to face the pole 50 on the upper end of one side of the clue 40. As shown in Fig. 1, the upper stopping jaw 41 is provided so that its upper surface is caught by the lower surface of the upper stopper 51 of the pawl 50, which will be described later. 3, when the upper stopper 51 is engaged with the lower surface of the upper stopper 51 of the pawl 50, the upper stopper 41 is engaged with the intermediate stopper 55 of the pawl 50, (L) in the direction of the axis of rotation of the rotor (40). It is possible to prevent the upper stopping jaw 41 and the intermediate stopper 55 of the pawl 50 from interfering with each other.

The lower stopping jaw 43 is formed so as to face the pole 50 at the lower end of one side of the clue 40. 4A to 4D, the lower stopping jaw 43 can push the upper stopper 51 and the intermediate stopper 55 of the pawl 50 when the clue 40 is rotated in the clockwise direction . 5, the side surface 43a of the lower stopping jaw 43 is provided on the side surface 55a of the intermediate stopper 55 so that the intermediate stopper 55 of the pawl 50 can be smoothly pushed out. ). 6, the lower stopping jaw 43 is formed so as to be engaged with the upper surface of the lower end stopper 53 of the pawl 50, which will be described later.

The receiving groove 45 is formed between the upper latching jaw 41 and the lower latching jaw 43 so as to receive the striker S which has entered the guide groove 12 as shown in Fig. The receiving groove 45 is formed so that at least a portion of the receiving groove 45 overlaps with the guide groove 12 so that the striker S can move along the guide groove 12 in a state where the striker S is accommodated in the receiving groove 45. Therefore, when the hood is closed, the striker S moves downward along the guide groove 12 and flows into the receiving groove 45, and the clue 40 is moved in the clockwise direction by the force transmitted from the striker S .

1, the pawl 50 is rotatable on the front face of the main frame 10 so that the rotary shaft 57 is positioned on the other side of the main frame 10 with respect to the guide groove 12 Respectively. A pole return spring 90 is mounted on the rotary shaft 57 of the pawl 50, as shown in Fig. One end of the pole return spring 90 is fixed to the spring hanger 59 provided on the pawl 50 and the other end is fixed to the main frame 10. [ This pole spring 90 provides an elastic restoring force so that the pawl 50 can be rotated clockwise when the pawl 50 is rotated counterclockwise.

The pawl 50 may include an upper stopper 51, an intermediate stopper 55, a lower stopper 53, and the like, as shown in Fig.

The upper stopper 51 is formed so as to face toward the clue 40 at the upper end of one side of the pawl 50. As shown in Fig. 1, the upper stopper 51 is provided to catch the upper surface of the upper stopping jaw 41 of the clue 40 on the lower surface.

The intermediate stopper 55 is formed so as to face toward the clue 40 at the middle portion of one side of the pawl 50. [ The intermediate stopper 55 is formed to be pushed by the lower end stop 43 of the clue 40 as shown in Fig. 4D. 5, the side surface 55a of the intermediate stopper 55 is formed so as to be able to be smoothly pushed by the side surface 43a of the lower end stop 43 of the clue 40. Further, And has a shape corresponding to the side surface 43a of the side wall 43.

When the intermediate stopper 55 is pushed by the lower end stop 43 of the clue 40, the pawl 50 is rotated counterclockwise as shown in Fig. 4D. The intermediate stopper 55 is positioned between the upper stopper 51 and the upper stopping jaw 41 when the lower stopping jaw 43 is pushed by the stopper S as shown in Fig. The pawl 50 is rotated counterclockwise by an angle sufficient to form a wide gap with respect to the pawl 50. As shown in Fig. The striker S can be prevented from being caught between the upper stopper 51 and the upper stopping jaw 41. [

The lower stopper 53 is formed so as to face toward the clue 40 at the lower end of one side of the pawl 50. As shown in Fig. 6, the lower end stopper 53 is provided on the upper surface so that the lower end of the lower end stopper 43 of the clue 40 is caught.

When the hood is tightly closed, the closure 40 is rapidly rotated in the counterclockwise direction by the striker S, and the lower end stopper 43 strongly pushes the upper stopper 51. The lower stopping jaw 43 and the intermediate stopper 55 are not brought into contact with each other and the clue 40 is moved to the intermediate stopper 55 And is rotated counterclockwise without being decelerated. When the clue 40 is rotated in this manner, there is a fear that the hood latch device 1 may be damaged by the impact generated at this time.

6, when the pawls 50 and the clues 40 are rotated in the counterclockwise direction due to the tight closing of the hood, the lower stoppers 53 are provided on the upper surface of the lower stopper 53, So that the lower surface of the base 43 is caught. 6, the lower stopper 53 prevents the striker S from falling down excessively along the guide groove 12 when the hood is closed to enter the buffering zone B, The striker S can be disposed at the reference position P1.

1, the protection cap 60 is coupled to the rotating shaft 47 of the clue 40 and the rotating shaft 57 of the pawl 50, Lt; / RTI > The protective cap 60 may have auxiliary guide grooves 62 having a shape corresponding to the guide grooves 12, as shown in FIG. The auxiliary guide groove 62 can guide the movement of the striker S by assisting the guide groove 12.

Hereinafter, the manner in which the striker S is disposed at the reference position P1 when the hood is closed will be described with reference to the drawings.

4A, the clue 40 moves along the guide groove 12 and is rotated in the counterclockwise direction by the striker S introduced into the receiving groove 45, and the lower end stop jaw 43 Pushes the upper stopper 51 and rotates the pawl 50 counterclockwise by a predetermined angle.

Next, as shown in Fig. 4B, the lower stopping jaw 43 enters the space created by the upper stopper 51 being pushed, and the clue 40 is further rotated in the counterclockwise direction.

4C and 4D, the pawl 50 is rotated counterclockwise by the resilient restoring force provided by the pawl return spring 90 and the lower pawl 43 is pivoted by the pawl 50 And the clue 40 is further further rotated in the counterclockwise direction while being decelerated by the frictional force acting between the lower stopping stopper 43 and the intermediate stopper 55.

4E, the clue 40 is rotated clockwise by the elastic restoring force when the elastic restoring force applied by the return spring 80 is greater than the pressing force applied from the striker S, do. 4E, the upper surface of the upper stopper 41 is engaged with the lower surface of the upper stopper 51, so that the clue 40 and the pawl 50 are stopped, and the striker S is stopped at the reference position (P1).

On the other hand, the hood latch device 1 is provided to be operated by the clue 40 when the striker S is disposed at the reference position P1, as shown in Fig. 4E, so that the striker S is moved to the reference position Lt; RTI ID = 0.0 > P1. ≪ / RTI >

Fig. 7 is a diagram showing the manner in which the striker enters the buffer zone at the time of a pedestrian collision. Fig.

When the pedestrian collides with the hood, a strong impact is applied to the hood to collapse the hood as compared with when the hood is closed. If the striker S maintains the reference position P1 when the hood is collapsed, the impact generated at the time of collision is directly applied to the pedestrian, which may cause a serious injury to the pedestrian.

7, the hood latch device 1 is provided in the guide groove 12 with a shock absorbing section B extending downward relative to the reference position P1. Here, the buffer section B refers to a section located between the reference position P1 and the lowest point P2 of the guide groove 12. [ According to this buffering period B, when the hood is collapsed by a pedestrian collision in a state where the striker S is disposed at the reference position P1, the striker S moves downward along the guide groove 12 And the hood can sit down by the distance that the striker S descends. Thus, the hood latch device 1 can minimize the impact of the pedestrian by buffering the impact applied to the pedestrian when the pedestrian collides with the pedestrian. In addition, the hood latch device 1 can introduce a shock buffering function without any electric parts such as an actuator, a sensor and a controller, so that the weight, installation cost, and installation space can be reduced as compared with the conventional active hood device.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not to be limited to the details thereof and that various changes and modifications will be apparent to those skilled in the art. And various modifications and variations are possible within the scope of the appended claims.

1: vehicle hood latch device
10: Main frame
12: Information home
20: Hook
30: Lever
40: Clue
41: upper jaw
43: lower jaw
45: Receiving groove
47:
48: Spring hanger
50: Paul
51: Upper stopper
53: Lower stopper
55: Intermediate stopper
57:
59: Spring hanger
60: Protective cap
62: Auxiliary guide groove
70: Hook return spring
80: Cluture Spring
90: pole return spring
100: Switch

Claims (7)

A main frame extending along a vertical direction so as to have a predetermined length and having a guide groove for guiding the striker;
A clasp rotatably mounted on the main frame, the closure having a top locking jaw, a bottom locking jaw, and a receiving groove formed between the top locking jaw and the bottom locking jaw to receive the striker that has entered the guide groove;
A pole having a top stopper and a bottom stopper and rotatably mounted on the main frame;
Wherein the upper stopper is formed to catch the upper stopping jaw when the struter accommodated in the receiving groove is disposed at a predetermined reference position of the guide groove,
Wherein the guide groove has a buffer section extending downward by a predetermined distance from the reference position. The method according to claim 1,
The lower end stopper is configured such that when the pawl is pushed by the clue and rotated by a predetermined angle or more in the other direction opposite to the one direction, the lower end stopper is hooked so that the striker enters the buffering section Wherein the latch is formed to be capable of being disconnected. The method according to claim 1,
A return spring which provides an elastic restoring force such that the closure rotates in a predetermined direction; And
Further comprising a poly-spring for providing an elastic restoring force such that the pawl rotates in the one direction. The method of claim 3,
Further comprising an intermediate stopper formed between the upper end stopper and the lower end stopper so as to be pushed by the lower end stopping jaw when the clue is rotated. 5. The method of claim 4,
The intermediate stopper is formed such that when the upper stopper is pushed by the lower end stop, the pawl is rotated by a predetermined angle in the other direction opposite to the one direction,
Wherein the predetermined angle is an angle between the upper latching jaw and the upper stopper so as to form a gap larger than a diameter of the striker. 6. The method of claim 5,
Wherein the upper latching jaw is spaced apart from the intermediate stopper by a predetermined distance with reference to a rotation axis direction of the clue. The method according to claim 1,
The closure being mounted on one side of the main frame so that the receiving groove overlaps the guide groove,
Wherein the pawl is mounted on the other side of the main frame opposite to the one side so that the upper stopper and the lower stopper face the clue.

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