阅读说明：本技术 发动机罩锁钩及车辆 (Engine bonnet latch hook and vehicle ) 是由 刘建英 王美松 杜群 于 2018-07-23 设计创作，主要内容包括：本发明涉及一种发动机罩锁钩及车辆,该发动机罩锁钩包括用于与锁扣(100)接合的第一部分(1)、用于固定到发动机罩(200)上的第二部分(2)、以及连接件(3),所述第一部分(1)和第二部分(2)通过所述连接件(3)固定连接,所述连接件(3)上形成有减弱结构(31),所述连接件(3)能够从所述减弱结构(31)处断裂以解除所述第一部分(1)和第二部分(2)的固定连接。所述发动机罩锁钩在对发动机罩的后端施加向上的力的情况下,其连接件能够断裂,以解除第一部分和第二部分的固定连接,允许发动机罩的前端向上抬升,以减小对与车辆发生碰撞的行人的伤害。(The invention relates to a hood lock hook and a vehicle, the hood lock hook comprises a first part (1) used for being jointed with a lock catch (100), a second part (2) used for being fixed on a hood (200), and a connecting piece (3), the first part (1) and the second part (2) are fixedly connected through the connecting piece (3), a weakening structure (31) is formed on the connecting piece (3), and the connecting piece (3) can be broken from the weakening structure (31) to release the fixed connection of the first part (1) and the second part (2). The hood lock hook can break its connecting piece under the condition that upward force is applied to the rear end of the hood, so that the fixed connection of the first part and the second part is released, and the front end of the hood is allowed to be lifted upwards, so that the injury to pedestrians in collision with the vehicle is reduced.)

1. A hood lock hook is characterized by comprising a first part (1) used for being jointed with a lock catch (100), a second part (2) used for being fixed on a hood (200), and a connecting piece (3), wherein the first part (1) and the second part (2) are fixedly connected through the connecting piece (3), a weakening structure (31) is formed on the connecting piece (3), and the connecting piece (3) can be broken from the weakening structure (31) to release the fixed connection of the first part (1) and the second part (2).

2. The hood lock hook according to claim 1, wherein the first part (1) is formed with a first pin hole (11), the second part (2) is formed with a second pin hole (21), the connecting member (3) is a shear pin passing through the first pin hole (11) and the second pin hole (21), and the weakening structure (31) is a weakening groove.

3. The hood lock hook according to claim 1, characterized in that it further comprises a flexible element (4), said first (1) and second (2) portions being further connected by said flexible element (4).

4. The hood lock hook according to claim 3, characterized in that the flexible member (4) is any one of a spring, a telescopic hose and a rope.

5. The hood lock hook according to claim 3, characterized in that the first part (1) is U-shaped, the connecting members (3) are two, the second part (2) comprises a first section (22) and a second section (23) which are separated from each other, one end of the first part (1) is fixedly connected with the first section (22) through one connecting member (3), and the other end of the first part (1) is fixedly connected with the second section (23) through the other connecting member (3).

6. The hood lock hook according to claim 5, characterized in that at least one end of the first part (1) is connected to the second part (2) by the flexible member (4).

7. The hood lock hook according to claim 6, characterized in that a receiving hole (24) is formed in the first section (22), one end of the receiving hole (24) extends to a contact surface of the first section (22) and the first part (1), the flexible member (4) is a spring, the spring is disposed in the receiving hole (24), one end of the spring is connected with a hole wall of the receiving hole (24), and the other end of the spring is connected with the first part (1).

8. The hood lock hook according to claim 5, characterized in that the first and second sections (22, 23) are each L-shaped.

9. A vehicle, characterized by comprising:

an engine cover (200);

the shackle (300) of any one of claims 1-8 being provided at a front end of the engine bonnet (200);

a latch (100) for engaging with the shackle (300);

a detection device for detecting a collision of a vehicle with a pedestrian;

an external source driving device which provides an upward force to the hood (200) in response to a signal from the detecting device to force the connecting member (3) in the latch hook (300) to be broken from the weakened structure (31), thereby allowing the front end of the hood (200) to be lifted upward.

10. The vehicle of claim 9, wherein the external source drive is a gas generator with a pushrod configuration.

Technical Field

The invention relates to the field of vehicles, in particular to an engine hood lock hook and a vehicle.

Background

Disclosure of Invention

An object of the present invention is to provide a hood lock hook and a vehicle, the hood lock hook being capable of breaking its connecting member to release the fixed connection of the first portion and the second portion and to allow the front end of the hood to be lifted upward in the case where an upward force is applied to the rear end of the hood to reduce injury to a pedestrian who collides with the vehicle.

In order to achieve the above object, an aspect of the present invention provides a hood lock hook including a first portion for engagement with a latch, a second portion for fixing to a hood, and a connecting member through which the first portion and the second portion are fixedly connected, the connecting member having a weakened structure formed thereon, the connecting member being breakable from the weakened structure to release the fixed connection of the first portion and the second portion.

Optionally, the first portion is formed with a first pin hole, the second portion is formed with a second pin hole, the connecting member is a shear pin passing through the first pin hole and the second pin hole, and the weakening structure is a weakening groove.

Optionally, the hood catch further comprises a flexible member, the first and second portions further being connected by the flexible member.

Optionally, the flexible member is any one of a spring, a telescopic hose and a cord.

Optionally, the first portion is U-shaped, the number of the connecting members is two, the second portion includes a first section and a second section that are separated from each other, one end of the first portion is fixedly connected to the first section through one connecting member, and the other end of the first portion is fixedly connected to the second section through another connecting member.

Optionally, at least one end of the first portion is connected to the second portion by the flexible member.

Optionally, a receiving hole is formed in the first section, one end of the receiving hole extends to a contact surface between the first section and the first portion, the flexible member is a spring, the spring is disposed in the receiving hole, one end of the spring is connected with a hole wall of the receiving hole, and the other end of the spring is connected with the first portion.

Optionally, the first and second sections are both L-shaped.

Another aspect of the present invention provides a vehicle including: an engine cover; the latch hook described above, which is provided at the front end of the hood; a latch for engaging with the latch hook; a detection device for detecting a collision of a vehicle with a pedestrian; an external source driving device which provides an upward force to the hood in response to a signal from the detecting device to force the connecting member in the latch hook to be broken from the weakened structure, thereby allowing the front end of the hood to be lifted upward.

Optionally, the external source driving device is a gas generator with a push rod structure.

The invention has the following effects:

under the condition that a detection device on the vehicle detects that the collision between the vehicle and a pedestrian cannot be avoided, when the front end of the vehicle is about to have a collision accident with the pedestrian, the external source driving device responds to a signal from the detection device to provide an upward force to the rear end of the engine hood, so that the rear end of the engine hood is lifted upwards, and the engine hood rotates around a contact part of the lock catch and the lock hook. At this time, the first portion of the latch hook is subjected to a downward restraining force of the latch catch fixed to the vehicle body, and the second portion of the latch hook is subjected to an upward pulling force of the hood, so that the connecting member at the connecting position of the first portion and the second portion is subjected to both an upward and downward shearing force. When the shearing force exceeds the maximum shearing force which can be borne by the connecting piece, the connecting piece is broken at the weakening structure, then the fixed connection between the first part and the second part is released, the first part is still kept on the lock catch, and the second part moves upwards along with the engine hood, so that the front end of the engine hood is allowed to be quickly lifted upwards to a certain height, the space between the engine hood and hard engine parts in the engine hood is enlarged, more buffer space is provided for the collision between the front end of a vehicle and a pedestrian, and the injury of the vehicle to the pedestrian is reduced.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the structure of the hood, latch and shackle of the present invention;

FIG. 2 is an exploded perspective view of the hood latch hook of the present invention;

fig. 3 is a perspective view of the hood lock hook of the present invention in a state where the front end of the hood is lifted upward;

FIG. 4 is a perspective view of the hood latch hook of the present invention in an installed condition;

FIG. 5 is a sectional view A-A of FIG. 4;

FIG. 6 is a front view of the attachment member of the hood latch hook of the present invention;

FIG. 7 is a side view of the hood, latch and catch of the present invention with the front end of the hood lifted upwardly;

fig. 8 is a plan view of the hood, the striker, and the latch hook of the present invention in a state where the front end of the hood is lifted upward.

Description of the reference numerals

1 first portion 11 first pin hole

12 projection 2 second part

21 second pin hole 22 first section

23 second section 24 receiving hole

25 lug 3 attachment

31 weakened structure 32 front section

33 middle section 34 rear section

4 Flexible part 100 lock catch

200 hood 201 hood outer panel

202 inner lining reinforcing plate 203 latch hook reinforcing plate

204 hood inner panel 300 latch hook

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the present invention, unless otherwise specified, terms of orientation such as "upper, lower, left, right, front, and rear" are generally used to refer to the upper, lower, left, right, front, and rear with respect to the normal traveling direction of the vehicle, and "inner and outer" generally refer to the inner and outer sides with respect to the cabin of the vehicle.

As shown in fig. 1 and 7, in the vehicle of the present invention, the rear end of the hood 200 is hinged to the vehicle body (engine compartment), the hood 200 is rotatable about the hinge point, the latch hook 300 is mounted at the front end of the hood 200, the striker 100 is mounted at the front end of the vehicle body (engine compartment), and the latch hook 300 and the striker 100 are engageable with and disengageable from each other, thereby achieving the closing and opening of the hood 200. In a state where the vehicle is normally running or parked, the hood 200 is in a closed state; when the parts in the engine compartment are to be serviced or maintained, the hood 200 is opened.

As shown in fig. 2 to 4, an aspect of the present invention provides a hood lock hook 300 including a first portion 1 for engaging with a latch 100, a second portion 2 for fixing to a hood 200, and a connecting member 3, wherein the first portion 1 and the second portion 2 are fixedly connected by the connecting member 3, a weakening structure 31 is formed on the connecting member 3, and the connecting member 3 can be broken from the weakening structure 31 to release the fixed connection of the first portion 1 and the second portion 2.

As shown in fig. 1 and 7, another aspect of the present invention provides a vehicle including: an engine cover 200; the above-described latch hook 300, which is provided at the front end of the hood 200; a latch 100 for engaging with the latch hook 300; a detection device for detecting a collision of a vehicle with a pedestrian; and an external source driving means for providing an upward force to the hood 200 in response to a signal from the sensing means to force the connecting member 3 in the latch hook 300 to be broken from the weakening structure 31, thereby allowing the front end of the hood 200 to be lifted upward.

In the event that the detection means on the vehicle detects that a collision of the vehicle with a pedestrian is unavoidable, when a collision accident with a pedestrian is about to occur at the front end of the vehicle, the external source driving means supplies an upward force F to the rear end of the hood 200 in response to a signal from the detection means, as shown in fig. 7, so that the rear end of the hood 200 is lifted upward, and the hood 200 is rotated about the contact of the striker 100 and the latch hook 200. At this time, the first portion 1 of the latch hook 300 is restrained downward by the striker 100 fixed to the vehicle body, and the second portion 2 of the latch hook 300 is pulled upward by the hood 200, so that the connecting member 3 at the connecting position of the first portion 1 and the second portion 2 is subjected to both upward and downward shearing forces. When the shearing force exceeds the maximum shearing force that the connecting piece 3 can bear, as shown in fig. 3, 7 and 8, the connecting piece 3 is broken at the weakening structure 31, the fixed connection between the first part 1 and the second part 2 is released, the first part 1 is still kept on the latch 100, and the second part 2 moves upwards along with the engine hood 200, so that the front end of the engine hood 200 can be quickly lifted upwards by a certain height, the space between the engine hood 200 and the hard engine parts in the engine hood is enlarged, more buffer space is provided for the collision between the front end of the vehicle and the pedestrian, and the injury of the vehicle to the pedestrian is reduced.

Wherein, the detecting device and the external source driving device are not shown in the figures, the detecting device may be a sensor disposed at the front end of the vehicle body (for example, disposed on the front bumper) for detecting whether a pedestrian, an animal or other objects is near or colliding with the front end of the vehicle body, such as but not limited to a pressure sensor, a radar sensor, an optical fiber sensor or an infrared sensor.

The external source driving device can be an actuator such as a motor and a cylinder, optionally, the external source driving device is a gas generator with a push rod structure, the gas generator can be installed on two sides of the rear portion of the engine compartment, once the detection device detects that the collision between the front end of the vehicle and a pedestrian cannot be avoided, the gas generator is ignited, the push rod applies an upward force F to the rear end of the engine hood 200, the reaction is rapid, the actuation is rapid, and the engine hood 200 can be rapidly lifted.

The hood 200 may adopt a known structure, such as that shown in fig. 1, which includes a hood outer panel 201, a lining reinforcement panel 202, a latch hook reinforcement panel 203, and a hood inner panel 204. The latch 100 may also be of a known structure, such as a two-stage latch as shown in fig. 1, which includes a primary latch and a secondary latch, wherein the secondary latch is omitted from the drawings and only the primary latch is shown.

As shown in fig. 2 and 3, as a specific embodiment of the connecting member 3, optionally, a first pin hole 11 is formed on the first part 1, a second pin hole 21 is formed on the second part 2, and the positions and the number of the first pin holes 11 correspond to those of the second pin holes 21. Specifically, the attachment end of the second part 2 is formed with two lugs 25 arranged opposite to each other, the second pin hole 21 is provided on the lugs 25, the attachment end of the first part 1 is formed with the projection 12, the first pin hole 11 is provided on the projection 12, and the projection 12 is interposed between the two lugs 25. As shown in fig. 6, the connecting member 3 is a shear pin passing through the first pin hole 11 and the second pin hole 21, and the weakening structure 31 is a weakening groove, which may be a local recess on the outer peripheral surface of the shear pin, a groove, a hole penetrating therethrough, or the like, in which stress concentration occurs. Specifically, as shown in fig. 6, the shear pin includes a front section 32, a middle section 33 and a rear section 34, weakening grooves are formed between the front section 32 and the middle section 33 and between the middle section 33 and the rear section 34, the front section 32 and the rear section 34 are used for installing two lugs 25 of the second part 2, the middle section 33 is used for installing the protrusion 12 of the first part 1, and the shear pin can be broken from the weakening grooves.

Wherein, under the state of vehicle normal use, or when overhauing, maintaining the part in the engine compartment, under the engine hood 200 opens or the closed state and open or the in-process engine hood 200 of closing around the rear end hinge point when rotating, the power that the shear pin received is far less than its maximum shearing force that can bear, and the shear pin can not break to can guarantee the normal switching of engine hood 200.

In order to prevent a secondary accident that may be caused by the detachment of the front end of the hood 200 from the vehicle body, such as a secondary impact on a pedestrian or an impact on a surrounding vehicle or other pedestrians, as shown in fig. 2, 3, and 5, the hood lock hook 300 may further include a flexible member 4, and the first portion 1 and the second portion 2 may be further connected by the flexible member 4. As shown in fig. 3, the flexible member 4 allows the first portion 1 and the second portion 2 to be fixedly connected and spaced apart from each other by a certain distance, i.e. the two are not in direct contact or connected, but there is still a certain relation by the positions of the flexible member 4, i.e. the two are constrained and limited to each other. Therefore, the flexible part 4 only allows the second part 2 to move a certain distance relative to the first part 1, and the front end of the engine cover 200 can only be lifted a certain distance upwards without being separated from the restraint of the vehicle body, so that a secondary accident is avoided, and the space between the engine cover 200 and the hard engine parts in the engine compartment is enough to absorb the energy generated by collision, and the injury of the vehicle to pedestrians is reduced.

As a specific embodiment of the present invention, optionally, the flexible member 4 is any one of a spring, a flexible hose and a rope, wherein in the present embodiment, the flexible member 4 is a spring, which has a simple structure, is convenient to assemble, and has a low cost.

The first portion 1 may be formed in various shapes such as a circular arc shape, a V shape, etc., and the first portion 1 and the second portion 2 may be connected only at one place by a connection member 3 and a flexible member 4. As shown in fig. 2 and 3, as an embodiment of the present invention, the first part 1 has a U-shape to facilitate engagement and disengagement of the locker 100 with and from the first part 1. Connecting piece 3 is two, and the one end of first portion 1 is through a connecting piece 3 and second portion 2 fixed connection, and the other end of first portion 1 is through another connecting piece 3 and second portion 2 fixed connection, and the first portion 1 of being convenient for and second portion 2 remove fixed connection fast to engine bonnet 200 can upwards rise fast.

As shown in fig. 3, optionally, at least one end of the first part 1 is connected with the second part 2 through the flexible member 4, that is, the first part 1 is connected with the second part 2 through the flexible member 4 only at one end, and the structure is relatively simpler and lower in cost; or both ends of the first part 1 are connected with the second part 2 through the flexible pieces 4, the structure can bear larger upward force F, so that the connection of the engine hood 200 and the vehicle body is more stable and reliable.

As shown in fig. 2 and 3, as an embodiment of the present invention, optionally, the second part 2 includes a first section 22 and a second section 23 which are separated from each other, one end of the first part 1 is fixedly connected to the first section 22 through one connecting member 3, and the other end of the first part 1 is fixedly connected to the second section 23 through another connecting member 3. As shown in fig. 1, 7 and 8, a cross-shaped mounting hole is formed in the hood 200, and the first section 22 is located in front of the second section 23, so that the first section 22 is fixed to a front end of the cross-shaped mounting hole and the second section 23 is fixed to a rear end of the cross-shaped mounting hole, so that the latch hook 300 is mounted to the hood 200, thereby facilitating the mounting of the latch hook 300. The second part 2 may also be of unitary construction, for example with the first section 22 and the second section 23 connected by a transverse bar or beam.

In order to facilitate the accommodation of the flexible element 4, as shown in fig. 5, optionally, a receiving hole 24 is formed in the first section 22, one end of the receiving hole 24 extends to a contact surface between the first section 22 and the first portion 1, the flexible element 4 is a spring, the spring is disposed in the receiving hole 24, as shown in fig. 3, one end of the spring is connected to a hole wall of the receiving hole 24, and the other end of the spring is connected to the first portion 1. As shown in fig. 5, in a normal use state of the vehicle, that is, in a case where no collision accident of the vehicle with a pedestrian occurs, the spring is housed in the housing hole 24, hidden inside the first stage 22; as shown in fig. 3, in case of a collision accident between the vehicle and the pedestrian, the connecting member 3 is broken, the first portion 1 is released from the fixed connection with the first segment 22, and the spring is released from the receiving hole 24, thereby achieving a flexible connection between the first portion 1 and the first segment 22.

As shown in fig. 7 and 8, during a collision accident between a vehicle and a pedestrian, the rear end of the hood 200 is subjected to an upward force F, the hood 200 rotates around the hinge point of the rear end, after the hood 200 rotates to a certain angle, the connecting part 3 between the second section 23 and the first part 1 is broken first, the hood 200 continues to rotate, the connecting part 3 between the first section 22 and the first part 1 is broken, and the first section 22 and the first part 1 are flexibly connected by the flexible part 4.

As shown in fig. 2 and 3, as an embodiment of the present invention, the first section 22 and the second section 23 are optionally L-shaped, as shown in fig. 8, so as to facilitate the fixed connection, especially the welding, of the first section 22 and the second section 23 with the engine cover 200.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.