CN-122014072-A - Engine hood lock and vehicle

CN122014072ACN 122014072 ACN122014072 ACN 122014072ACN-122014072-A

Abstract

The invention provides an engine hood lock and a vehicle. The engine hood lock comprises a lock body and a lock catch, wherein the lock body comprises a lock body support, a lock hook, a zipper transmission mechanism and an initiator, the lock hook, the zipper transmission mechanism and the initiator are arranged on the lock body support, a first elastic piece is arranged between the lock hook and the lock body support, a first clamping portion, a second clamping portion and a locking opening are arranged on the lock hook, the lock catch extending into the locking opening can drive the lock hook to rotate to a locking position, and the first elastic piece can drive the lock hook to rotate to a primary unlocking position and a complete unlocking position along an unlocking direction. The zipper transmission mechanism can be respectively clamped with the first clamping part or the second clamping part so as to lock the latch hook at the locking position or the preliminary unlocking position, and the zipper transmission mechanism can be driven by external force or the action of the initiator to release the locking state of the latch hook. According to the engine hood lock, the initiator is triggered to drive the engine hood to actively bounce, so that the injury of the engine hood to pedestrians when the front end of a vehicle collides with the pedestrians is reduced.

Inventors

GAO XUDONG
MENG JIE
WANG CHAO
FAN YUNFEI
LI BOHAN
WANG HUANCHAO
DUAN JINGWEI

Assignees

长城汽车股份有限公司

Dates

Publication Date: 20260512
Application Date: 20241108

Claims (10)

1. An engine bonnet lock, characterized in that: the novel lock comprises a lock body and a lock catch (1), wherein the lock body comprises a lock body bracket (2), and a lock hook (5), a zipper transmission mechanism (3) and an initiator (8) which are arranged on the lock body bracket (2); The lock hook (5) can rotate on the lock body bracket (2), a first elastic piece is arranged between the lock hook (5) and the lock body bracket (2), and a first clamping part (51), a second clamping part (52) and a locking opening (500) are arranged on the lock hook (5); The first elastic piece can drive the lock hook (5) to rotate along the unlocking direction and sequentially reach a preliminary unlocking position allowing the lock hook (1) to retract to the outlet of the lock opening (500) and a complete unlocking position allowing the lock hook (1) to move out of the lock opening (500) from the locking position; The zipper transmission mechanism (3) can be respectively matched with the first clamping part (51) or the second clamping part (52) in a clamping way, so that the latch hook (5) is locked at the locking position or the preliminary unlocking position, and the zipper transmission mechanism (3) can be driven by external force or the action of the initiator (8) to release the locking state of the latch hook (5).
2. The bonnet lock as defined in claim 1, wherein: A first rotating shaft (61) and a second rotating shaft (62) are arranged on the lock body bracket (2) in parallel, and the lock hook (5) is arranged on the first rotating shaft (61); The zipper transmission mechanism (3) comprises a latch hook clamp (4) arranged on the second rotating shaft (62), a second elastic piece acting between the latch hook clamp (4) and the lock body bracket (2), and a pull wire (30); The second elastic piece is used for driving the latch hook clamp (4) to be close to the latch hook (5) so as to keep the locking state, and the stay wire (30) and the initiator (8) are in transmission connection with the latch hook clamp (4) so as to drive the latch hook clamp (4) to be far away from the latch hook (5) so as to release the locking state.
3. The bonnet lock as defined in claim 2, wherein: A lock hook sheath (50) is sleeved on the lock hook (5), and the lock hook sheath (50) at least covers the part, which is in contact with the lock catch (1), of the lock opening (500); And/or, a clip sheath (42) is sleeved on the latch hook clip (4), and the second elastic piece comprises a clamping torsion spring (43) sleeved on the clip sheath (42).
4. The bonnet lock as defined in claim 2, wherein: The zipper transmission mechanism (3) further comprises a transmission frame (31) arranged on the second rotating shaft (62), wherein the stay wire (30) is connected to the transmission frame (31) to pull the transmission frame (31) to rotate from an initial position to an unlocking position, and the initiator (8) is in transmission connection with the transmission frame (31) to drive the transmission frame (31) to rotate from the initial position to the unlocking position; The transmission frame (31) is provided with a driving part (311), a dial plate (40) is arranged on the lock hook clamp (4) corresponding to the driving part (311), the transmission frame (31) rotating to the unlocking position can drive the lock hook clamp (4) to release the locking state, and a first rotary torsion spring (32) for driving the transmission frame (31) to return to the initial position is arranged between the transmission frame (31) and the lock body bracket (2).
5. The bonnet lock as defined in claim 4, wherein: A third rotating shaft (63) is further arranged on the lock body support (2), an initiation shifting piece (80) is rotatably arranged on the third rotating shaft (63), and the initiation shifting piece (80) is in transmission connection with the transmission frame (31); one end of the exploder (8) is fixed on the lock body bracket (2), the other end of the exploder is abutted to the end part of the exploding plectrum (80), and the exploder (8) triggered to act drives the exploding plectrum (80) to rotate away from an original position so as to toggle the transmission frame (31) to rotate from the original position to the unlocking position.
6. The bonnet lock as defined in claim 5, wherein: A second rotary torsion spring (82) is sleeved on the third rotating shaft (63), and the second rotary torsion spring (82) is used for driving the detonation plectrum (80) to return to the original position; and/or, a stirring pin (81) is arranged on the initiating poking piece (80), and the initiating poking piece (80) stirs the transmission frame (31) to rotate through the stirring pin (81).
7. The engine hood lock according to any one of claims 1 to 6, characterized in that: The device also comprises a locking detection unit (7); The locking position detection unit (7) sends out a second signal when the lock hook (5) locks the lock catch (1) on the lock body support (2), and sends out a first signal when the lock hook (5) is located at the preliminary unlocking position.
8. The bonnet lock as defined in claim 7, wherein: the locking position detection unit (7) comprises a sensor (70) and a trigger frame (71) which are arranged on the lock body bracket (2), and a third elastic piece which acts between the trigger frame (71) and the lock body bracket (2); The trigger frame (71) can rotate between a first position and a second position, the trigger frame (71) is kept at the first position under the action of the third elastic piece, and the sensor (70) is triggered to send out the first signal; the lock catch (1) extending into the lock opening (500) and locked on the lock body bracket (2) can drive the trigger frame (71) to rotate to the second position and trigger the sensor (70) to send out the second signal.
9. The bonnet lock as defined in claim 8, wherein: The lock body bracket (2) is provided with a fourth rotating shaft (64), the trigger frame (71) is rotatably arranged on the fourth rotating shaft (64), and the fourth rotating shaft (64) is provided with a toggle frame (720) which is in transmission connection with the trigger frame (71); The third elastic piece comprises a tension spring (72) arranged between the lock body bracket (2) and the toggle frame (720) and/or a third rotary torsion spring (73) acting between the lock body bracket (2) and the trigger frame (71).
10. A vehicle, characterized in that: The vehicle is provided with the hood lock according to any one of claims 1 to 9.

Description

Engine hood lock and vehicle Technical Field The invention relates to the technical field of automobile accessories, in particular to an engine hood lock. In addition, the invention also relates to a vehicle. Background Important components are arranged in a front cabin of the front part of the automobile, such as an engine, a transmission and the like of a fuel automobile type, and an air conditioning system, a control system and the like of an electric automobile type are arranged in the front cabin. An engine cover is arranged above the front engine room, and the engine cover is required to be fixedly connected with the vehicle body through a cover lock. When the engine hood is closed downwards, the lock catch can extend into a lock opening on the lock body and be locked and fixed into the lock opening by the lock hook, so that the locking and fixing of the engine hood are realized. The existing hood lock generally realizes the unlocking function through pulling a pull wire. When the stay wire is pulled, the lock hook slightly rotates to achieve a preliminary unlocking state, at the moment, an operator needs to manually toggle a spanner below the front end of the engine cover to drive the lock hook to rotate again so as to completely unlock, and then the engine cover is lifted upwards to enable the lock catch to be completely separated from the lock body, so that the engine cover can be opened. The whole operation process is complicated, has certain difficulty, and influences the use experience of a user on the vehicle. Meanwhile, with the development of the automobile industry, automobiles are not limited to the improvement of convenience of personnel in the automobiles, and the protection of pedestrians outside the automobiles is also increasingly focused. For example, when a front end of a vehicle collides, if the vehicle collides with a pedestrian, a serious hard collision between the hood and the pedestrian is extremely likely to occur because the hood is firmly locked to the vehicle by the hood lock, thereby causing serious damage to the pedestrian. The above-mentioned problems place new demands on the design and development of hood locks, and there is an urgent need for intensive development and improvement of existing hood locks. Disclosure of Invention In view of the above, the present invention aims to provide a hood lock for reducing injury to pedestrians from a hood when a pedestrian collision occurs at the front end of a vehicle. In order to achieve the above purpose, the technical scheme of the invention is realized as follows: an engine hood lock comprises a lock body and a lock catch, wherein the lock body comprises a lock body bracket, and a lock hook, a zipper transmission mechanism and an initiator which are arranged on the lock body bracket; the lock hook can rotate on the lock body bracket, a first elastic piece is arranged between the lock hook and the lock body bracket, and a first clamping part, a second clamping part and a locking port are arranged on the lock hook; the first elastic piece can drive the lock hook to rotate along the unlocking direction and sequentially reach a preliminary unlocking position allowing the lock catch to retract to the outlet of the lock opening and a complete unlocking position allowing the lock catch to move out of the lock opening from the locking position; the zipper transmission mechanism can be respectively matched with the first clamping part or the second clamping part in a clamping way, so that the latch hook is locked at the locking position or the preliminary unlocking position, and the zipper transmission mechanism can be driven by external force or the action of the initiator to release the locking state of the latch hook. The lock body support is provided with a first rotating shaft and a second rotating shaft which are arranged in parallel, the lock hook is arranged on the first rotating shaft, the zipper transmission mechanism comprises a lock hook clamp arranged on the second rotating shaft, a second elastic piece and a pull wire, the second elastic piece acts between the lock hook clamp and the lock body support, the second elastic piece is used for driving the lock hook clamp to be close to the lock hook so as to keep the locking state, and the pull wire and the initiator are in transmission connection with the lock hook clamp so as to drive the lock hook clamp to be far away from the lock hook so as to release the locking state. Further, a lock hook sheath is sleeved on the lock hook, the lock hook sheath at least covers the part where the lock opening is contacted with the lock catch, and/or a clip sheath is sleeved on the lock hook clip, and the second elastic piece comprises a clamping torsion spring sleeved on the clip sheath. Further, the zipper transmission mechanism further comprises a transmission frame arranged on the second rotating shaft, and the stay wire is connected to the transmission frame so as to pull the transmi