Engine cover hinge capable of realizing predictable triggering of active pedestrian protection

Abstract

The invention discloses an engine hood hinge capable of predictively triggering active pedestrian protection, which comprises a vehicle body connecting piece, an engine hood connecting piece, a gasket positioned between the vehicle body connecting piece and the engine hood connecting piece, and an engine hood connecting piece, the engine hood connecting piece is connected with the automobile body connecting piece, the gasket and the engine hood connecting piece are connected together, the connecting piece enables the engine hood connecting piece to rotate around the automobile body connecting piece, the releasing and resetting mechanism, the engine hood bouncing mechanism and the shockproof mechanism are installed on the engine hood connecting piece, and bouncing and locking of the engine hood bouncing mechanism are controlled through the releasing and resetting mechanism. The shock-proof mechanism limits lateral displacement of the release reset mechanism and the engine hood bouncing mechanism, the functions of easy reset and no damage to the hinge body during false triggering can be achieved through the engine hood hinge, working stability and reliability are guaranteed, meanwhile, high reusability of products is achieved, environmental protection performance is improved, and the engine hood hinge is suitable for popularization and application. And meanwhile, the maintenance cost is reduced or saved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile accessories, in particular to a hood hinge capable of predictably triggering active pedestrian protection. Background Art

[0002] A pedestrian protection hinge is a safety device installed on a car's hood. In the event of a collision between a vehicle and a pedestrian, it triggers the hood to rise to a certain height through a mechanical or electronic trigger mechanism, minimizing injury to the pedestrian. It is a crucial component of modern automotive passive safety systems.

[0003] The pedestrian protection hinge has the function of buffering and absorbing energy. When a collision occurs, the hinge is triggered to cause the rear of the engine hood to pop up, forming a buffer space to prevent the pedestrian's head from directly hitting the hard engine components. The pedestrian protection hinge also has the function of reducing head injuries by increasing the deformation distance and prolonging the collision time, thereby reducing the impact force on the head and reducing the risk of serious injury or death.

[0004] The hood assemblies currently on the market with active pedestrian protection only start working when a pedestrian collides with the vehicle's front bumper. The rear end of the hood pops up within 150 to 200 milliseconds to ensure that the hood has popped up into place when the pedestrian's head hits the rear end of the hood, providing a buffer space when the pedestrian's head hits the rear end of the hood to reduce the damage to the pedestrian's head. In addition, on bumpy roads or minor collisions (such as low-speed rear-end collisions), the hood may accidentally pop up due to vibration or sensor misjudgment, increasing maintenance costs.

[0005] The above method has the following main disadvantages: 1. The hood pops up for a short time, and there may be residual energy in the hood that has not been consumed, which may cause secondary damage to the pedestrian's head; 2. Once the pedestrian protection system function is triggered, the vehicle must be sent to the repair shop as soon as possible and cannot be used normally; 3. If the pedestrian protection system is triggered by mistake, it is usually necessary to replace the entire hinge assembly, and some models also need to replace the hood or sensor, which has a high maintenance cost; 4. The existing technical trigger is a gunpowder trigger, which is not environmentally friendly; 5. The pedestrian protection hinge in the existing technology has a limited protection range, which is mainly aimed at the adult head hitting the hood area, and the protection effect on children (hitting the windshield) or high-speed collisions is weaker; 6. The existing electronic trigger hinge may fail due to sensor failure, and the response accuracy and durability of the mechanical hinge may be insufficient.

[0006] Therefore, pedestrian protection hinges are a key technology in automotive safety design, effectively reducing pedestrian collision injuries. However, they still face issues such as false triggering and high repair costs. Future advancements in materials science and intelligent sensing technology are expected to further enhance their reliability and protective effectiveness. Summary of the Invention

[0007] Purpose of the invention: In order to address the deficiencies of the prior art, the present invention provides a hood hinge that can predictably trigger active pedestrian protection. The hood hinge can be easily reset, and will not cause damage to the hinge body when triggered incorrectly. While ensuring working stability and reliability, it achieves high reusability of the product, improves environmental protection, and reduces or saves maintenance costs.

[0008] Technical solution: In order to achieve the above objectives, the present invention provides a hood hinge that predictably triggers active pedestrian protection, which includes: a body connector, a hood connector, a gasket located between the body connector and the hood connector, and a connector that connects the body connector, the gasket and the hood connector together and allows the hood connector to rotate around the body connector. It also includes: a release and reset mechanism installed on the hood connector, a hood pop-up mechanism and an anti-shock mechanism, the pop-up and locking of the hood pop-up mechanism is controlled by the release and reset mechanism, and the anti-shock mechanism limits the lateral displacement of the release and reset mechanism and the hood pop-up mechanism.

[0009] As a further preferred embodiment of the present invention, the release and reset mechanism includes a hood connector, a rotating member, a release end pull wire, a pull wire fixing member, a pawl, a rivet shaft A, a torsion spring A, a lock tongue, a locking rod, a rivet shaft B, a torsion spring B, a hood connector end pull wire and a pull wire head; One end of the hood connector is connected to the hood connector via a rotating member, so that the hood connector rotates relative to the hood connector under the action of the rotating member, thereby causing the locking rod to engage with or disengage from the groove on the lock tongue; The torsion spring A is sleeved on the pawl, and the pawl is connected to the hood connector through the rivet shaft A, so that the pawl rotates around the rivet shaft A; the torsion spring B is sleeved on the lock tongue, and the lock tongue is connected to the hood connector through the rivet shaft B, so that the lock tongue rotates around the rivet shaft B; The release end pull wire and the hood connection end pull wire are passed through the pull wire fixing member, and the pull wire fixing member is fixed to the hood connection member by a snap connection; One end of the release end pull wire is connected to the driver, and the other end of the release end pull wire passes through the pull wire fixing piece and is fastened to the pawl to control the pawl to rotate counterclockwise around the rivet axis A; One end of the hood connection end pull wire is connected to the driver, and the other end of the hood connection end pull wire is fastened to the pull wire head to control the lock tongue to rotate around the rivet axis B.

[0010] As a further preferred embodiment of the present invention, the pawl rotates counterclockwise around the rivet axis A to disengage the locking rod from the groove on the lock tongue.

[0011] As a further preferred embodiment of the present invention, the lock tongue rotates counterclockwise around the rivet axis B so that the lock rod is locked into the groove on the lock tongue.

[0012] As a further preferred embodiment of the present invention, the locking rod is fixed to the hood connector by riveting.

[0013] When the driver receives the pop-up signal, the release end pull wire passes through the pull wire fixing part and is fastened to the pawl to control the pawl to rotate counterclockwise around the rivet axis A. The pawl rotates counterclockwise around the rivet axis A to disengage the locking rod from the groove on the lock tongue. After losing the limiting control of the lock tongue, the locking rod enables the hood connector to move upward in the Z direction, and limits the rotation angle of the front connecting rod through the limiting pin, so that the hood connector is lifted to a height H in the Z direction.

[0014] As a further preferred embodiment of the present invention, the hood pop-up mechanism includes a front connecting rod, a rear connecting rod, a rivet shaft C, a rivet shaft D, a rivet shaft E, a rivet shaft F, a torsion spring C, a torsion spring D, a torsion spring E and a torsion spring F; One end of the front connecting rod is riveted to the hood connecting member via a rivet axis C. A torsion spring C is sleeved on the rivet axis C, and both ends of the torsion spring C respectively abut against the hood connecting member and the front connecting rod, thereby allowing the hood connecting member and the front connecting rod to rotate around the rivet axis C. The other end of the front connecting rod is riveted to the hood connecting member via a rivet shaft D. A torsion spring D is sleeved on the rivet shaft D, and the two ends of the torsion spring D respectively abut against the front connecting rod and the hood connecting member, thereby causing the hood connecting member and the front connecting rod to rotate around the rivet shaft D. One end of the rear connecting rod is riveted to the hood connecting member via a rivet shaft E. A torsion spring E is sleeved on the rivet shaft E, and both ends of the torsion spring E respectively abut against the rear connecting rod and the hood connecting member, thereby causing the rear connecting rod and the hood connecting member to rotate around the rivet shaft E. The other end of the rear connecting rod is riveted to the hood connecting piece through a rivet shaft F. The torsion spring F is sleeved on the rivet shaft F and the two ends of the torsion spring F respectively resist the rear connecting rod and the hood connecting piece, thereby causing the rear connecting rod and the hood connecting piece to rotate around the rivet shaft F.

[0015] As a further preferred embodiment of the present invention, a limiting pin is fixed on the hood connecting member, and the limiting pin is located in the middle of the front connecting rod and the rear connecting rod and is used to limit the rotation angle of the front connecting rod.

[0016] After the hood connector pops up to a height of H, the driver connected to the hood connector end pull wire receives a reset command, and the driver pulls the hood connector end pull wire, causing the pull wire head fixed to the hood connector end pull wire to move downward in the direction Z of the hood connector end pull wire, thereby resetting the hood connector and allowing the hinge to return to its initial state.

[0017] As a further preferred embodiment of the present invention, the shock-proof mechanism includes a rubber block and a hood shock-proof hole. The rubber block is fixed to the hood connector by snapping. The hood shock-proof hole is a through hole on the hood connector. The rubber block is opposite to the hood shock-proof hole. When the hood connector and the hood connector are in a locked state, the rubber block clamps the support leg of the hood connector to prevent the hood connector from shaking laterally, so that the hinge described in the present invention has no abnormal noise or vibration during normal driving of the vehicle.

[0018] As a further preference of the present invention, when the driver receives the pop-up signal, the driver pulls the release end wire, causing the pawl connected to the release end wire to rotate counterclockwise around the rivet axis A, thereby disengaging the lock tongue from the pawl, and finally disengaging the locking rod from the groove on the lock tongue. After losing the limiting control of the lock tongue, the locking rod simultaneously releases the torsion springs C, D, E and F, and releases the torsional energy stored in them to the hood connector, thereby providing pop-up energy to open the hood. After popping up, the system has almost no residual energy, avoiding secondary injury to the pedestrian's head.

[0019] As a further preference of the present invention, when the driver receives the reset command, the driver pulls the pull wire at the hood connection end, causing the locking rod fixed to the hood connector to move downward. After the locking rod contacts the lock tongue, it drives the lock tongue to rotate around the rivet axis B. After the lock tongue contacts the pawl, it continues to drive the pawl to rotate around the rivet axis A until the lock tongue and the pawl abut against each other and present a locked state, thereby realizing the re-locking and resetting of the hood connector and the hood connector, and the vehicle can be used normally.

[0020] Beneficial Effects: Compared with the prior art, the hood hinge for predictably triggering active pedestrian protection according to the present invention has the following advantages: (1) The torsional energy stored in the four torsion springs is released to the hood, providing the rebound energy. This leaves the system with almost no residual energy after the hinge is rebounded, thus preventing secondary head injuries to pedestrians. (2) After the driver receives the reset command, it pulls the cable at the hood connection end to move the lock rod fixed to the hood connection piece downward. After the lock tongue contacts the pawl, it drives the pawl to rotate around the rivet axis until the locking mechanism is re-locked, thereby achieving easy reset of the hood and normal use of the vehicle, thus achieving high reusability of the product. (3) The hinge can be reset and reused after being triggered by mistake, and the relevant parts do not need to be replaced, which reduces maintenance costs; (4) The four torsion springs provide the energy for the hood to pop up, which is a mechanical function. There is no environmental pollution caused by chemical combustion, and it belongs to the environmental protection agency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 A schematic diagram of the structure of the hood pop-up mechanism installed on the hood connector; Figure 3 It is a structural schematic diagram of the hood pop-up mechanism when the hood connector is in the pop-up state; Figure 4 It is a structural diagram of the release and reset mechanism installed on the hood connector; Figure 5 It is a structural diagram of the release and reset mechanism when the hood connector is in the pop-up state; Figure 6 This is a partial enlarged view of the shockproof mechanism; Figure 7 A partial enlarged view of the release reset mechanism in the unlocked state; Figure 8 This is a partial enlarged view of the locked state of the release reset mechanism. DETAILED DESCRIPTION

[0022] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0023] As shown in the accompanying drawings, a hood hinge for predictably triggering active pedestrian protection according to the present invention comprises: a body connector 1, a hood connector 2, a connector 3, a gasket 4, a release and reset mechanism, a hood pop-up mechanism and a shockproof mechanism.

[0024] The gasket 4 is located in the middle of the body connector 1 and the hood connector 2. The connector 3 passes through the body connector 1, the gasket 4 and the hood connector 2 in sequence and connects them together, so that the hood connector 2 rotates around the body connector 1, releasing the reset mechanism. The hood pop-up mechanism and the shockproof mechanism are installed on the hood connector 2. The pop-up and locking of the hood pop-up mechanism are controlled by releasing the reset mechanism, and the shockproof mechanism limits the lateral displacement of the release reset mechanism and the hood pop-up mechanism.

[0025] The release and reset mechanism includes a hood connector 221, a rotating member 100, a release end pull wire 2122, a pull wire fixing member 212, a pawl 2151, a rivet shaft A2152, a torsion spring A2153, a lock tongue 2161, a locking rod 223, a rivet shaft B2162, a torsion spring B2163, a hood connector end pull wire 2121, and a pull wire head 222. One end of the hood connector 221 is connected to the hood connector 2 via the rotating member 100, so that the hood connector 221 rotates relative to the hood connector 2 under the action of the rotating member 100, thereby causing the locking rod 223 to engage in or disengage from the groove on the lock tongue 2161. The torsion spring A2153 is mounted on the pawl 2151, and the pawl 2151 is connected to the hood connector 2 via the rivet axis A2152, so that the pawl 2151 rotates around the rivet axis A2152; the torsion spring B2163 is mounted on the lock tongue 2161, and the lock tongue 2161 is connected to the hood connector 2 via the rivet axis B2162, so that the lock tongue 2161 rotates around the rivet axis B2162; The release end pull wire 2122 and the hood connection end pull wire 2121 are inserted into the pull wire fixing piece 212, and the pull wire fixing piece 212 is fixed to the hood connection piece 2 by means of a snap connection; one end of the release end pull wire 2122 is connected to the driver, and the other end of the release end pull wire 2122 passes through the pull wire fixing piece 212 and is fastened to the pawl 2151 to control the pawl 2151 to rotate counterclockwise around the rivet axis A2152; one end of the hood connection end pull wire 2121 is connected to the driver, and the other end of the hood connection end pull wire 2121 is fastened to the pull wire head 222 to control the lock tongue 2161 to rotate around the rivet axis B2162.

[0026] The pawl 2151 rotates counterclockwise around the rivet axis A2152 to disengage the locking rod 223 from the groove on the lock tongue 2161 , and the lock tongue 2161 rotates counterclockwise around the rivet axis B2162 to lock the locking rod 223 into the groove on the lock tongue 2161 .

[0027] The hood pop-up mechanism includes a front link 231, a rear link 241, a rivet shaft C232, a rivet shaft D233, a rivet shaft E242, a rivet shaft F243, a torsion spring C234, a torsion spring D235, a torsion spring E244 and a torsion spring F245; One end of the front link 231 is riveted to the hood connector 221 via a rivet axis C232. A torsion spring C234 is sleeved on the rivet axis C232, with the two ends of the torsion spring C234 respectively abutting against the hood connector 221 and the front link 231, thereby allowing the hood connector 221 and the front link 231 to rotate around the rivet axis C232. The other end of the front link 231 is riveted to the hood connector 2 via a rivet axis D233. A torsion spring D235 is sleeved on the rivet axis D233, with the two ends of the torsion spring D235 respectively abutting against the front link 231 and the hood connector 2, thereby allowing the hood connector 2 and the front link 231 to rotate around the rivet axis D233. One end of the rear connecting rod 241 is riveted to the hood connecting member 221 through the rivet shaft E242, and the torsion spring E244 is mounted on the rivet shaft E242, and the two ends of the torsion spring E244 are respectively against the rear connecting rod 241 and the hood connecting member 221, so that the rear connecting rod 241 and the hood connecting member 221 rotate around the rivet shaft E242; the other end of the rear connecting rod 241 is riveted to the hood connecting member 2 through the rivet shaft F243, and the torsion spring F245 is mounted on the rivet shaft F243, and the two ends of the torsion spring F245 are respectively against the rear connecting rod 241 and the hood connecting member 2, so that the rear connecting rod 241 and the hood connecting member 2 rotate around the rivet shaft F243.

[0028] The spring 214 is screwed to the hood connector 2 by the bolt 213. Its function is to limit the pawl 2151 when the wire fixing part 212 is not installed on the hood connector 2, ensuring that the pawl 2151 stably fastens the lock tongue 2161. However, after the wire fixing part 212 is installed on the hood connector 2, the spring 214 is pushed out by the support foot of the wire fixing part 212, and the pawl 2151 is limited by the wire fixing part 212. Example

[0029] When the driver receives the pop-up signal, the driver pulls the release end pull wire 2122, causing the pawl 2151 connected to the release end pull wire 2122 to rotate counterclockwise around the rivet axis A2152, thereby disengaging the lock tongue 2161 from the pawl 2151, and finally disengaging the locking rod 223 from the groove on the lock tongue 2161. After losing the limiting control of the lock tongue 2161, the locking rod 223 simultaneously releases the torsion spring C234, torsion spring D235, torsion spring E244 and torsion spring F245, and releases the stored torsional energy to the hood connector 221, thereby opening the hood.

[0030] When the driver receives the reset command, the driver pulls the hood connection end pull wire 2121, causing the locking rod 223 fixed to the hood connector 221 to move downward. After the locking rod 223 contacts the lock tongue 2161, it drives the lock tongue 2161 to rotate around the rivet axis B2162. After the lock tongue 2161 contacts the pawl 2151, it continues to drive the pawl 2151 to rotate around the rivet axis A2152 until the lock tongue 2161 and the pawl 2151 are in a locked state, thereby realizing the re-locking and resetting of the hood connector 221 and the hood connector 2.

[0031] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A hood hinge that predictably triggers active pedestrian protection, comprising: A body connector (1), a hood connector (2), a gasket (4) located between the body connector (1) and the hood connector (2), and a connector (3) connecting the body connector (1), the gasket (4) and the hood connector (2) together and allowing the hood connector (2) to rotate around the body connector (1), characterized in that it also includes: a release reset mechanism, a hood pop-up mechanism and a shockproof mechanism installed on the hood connector (2), the release reset mechanism controlling the pop-up and locking of the hood pop-up mechanism, and the shockproof mechanism limiting the lateral displacement of the release reset mechanism and the hood pop-up mechanism.

2. The hood hinge for predictably triggering active pedestrian protection according to claim 1, characterized in that: The release and reset mechanism comprises a hood connecting member (221), a rotating member (100), a release end pull wire (2122), a pull wire fixing member (212), a pawl (2151), a rivet shaft A (2152), a torsion spring A (2153), a lock tongue (2161), a locking rod (223), a rivet shaft B (2162), a torsion spring B (2163), a hood connecting end pull wire (2121) and a pull wire head (222); One end of the hood connector (221) is connected to the hood connector (2) via a rotating member (100), so that the hood connector (221) rotates relative to the hood connector (2) under the action of the rotating member (100), thereby causing the locking rod (223) to engage with or disengage from the groove on the lock tongue (2161); The torsion spring A (2153) is sleeved on the pawl (2151), and the pawl (2151) is connected to the hood connector (2) via the rivet shaft A (2152), so that the pawl (2151) rotates around the rivet shaft A (2152); the torsion spring B (2163) is sleeved on the lock tongue (2161), and the lock tongue (2161) is connected to the hood connector (2) via the rivet shaft B (2162), so that the lock tongue (2161) rotates around the rivet shaft B (2162); The release end pull wire (2122) and the hood connection end pull wire (2121) are passed through the pull wire fixing member (212), and the pull wire fixing member (212) is fixed to the hood connection member (2) by means of a snap connection; One end of the release end pull wire (2122) is connected to the driver, and the other end of the release end pull wire (2122) passes through the pull wire fixing member (212) and is fastened to the pawl (2151) to control the pawl (2151) to rotate counterclockwise around the rivet axis A (2152); One end of the hood connection end pull wire (2121) is connected to the driver, and the other end of the hood connection end pull wire (2121) is fastened to the pull wire head (222) to control the lock tongue (2161) to rotate around the rivet axis B (2162).

3. The hood hinge for predictably triggering active pedestrian protection according to claim 2, characterized in that: The pawl (2151) rotates counterclockwise around the rivet axis A (2152) to disengage the locking rod (223) from the groove on the locking tongue (2161).

4. The hood hinge for predictably triggering active pedestrian protection according to claim 2, characterized in that: The locking tongue (2161) rotates counterclockwise around the rivet axis B (2162) so that the locking rod (223) is engaged in the groove on the locking tongue (2161).

5. The hood hinge for predictably triggering active pedestrian protection according to claim 2, characterized in that: The locking rod (223) is fixed to the vehicle cover connecting piece (221) by a riveting process.

6. The hood hinge for predictably triggering active pedestrian protection according to claim 1, characterized in that: The hood pop-up mechanism comprises a front connecting rod (231), a rear connecting rod (241), a rivet shaft C (232), a rivet shaft D (233), a rivet shaft E (242), a rivet shaft F (243), a torsion spring C (234), a torsion spring D (235), a torsion spring E (244) and a torsion spring F (245); One end of the front connecting rod (231) is riveted to the hood connecting member (221) via a rivet shaft C (232), a torsion spring C (234) is sleeved on the rivet shaft C (232), and two ends of the torsion spring C (234) respectively abut against the hood connecting member (221) and the front connecting rod (231), thereby causing the hood connecting member (221) and the front connecting rod (231) to rotate around the rivet shaft C (232); The other end of the front connecting rod (231) is riveted to the hood connecting member (2) via a rivet shaft D (233), a torsion spring D (235) is sleeved on the rivet shaft D (233), and two ends of the torsion spring D (235) respectively abut against the front connecting rod (231) and the hood connecting member (2), thereby causing the hood connecting member (2) and the front connecting rod (231) to rotate around the rivet shaft D (233); One end of the rear connecting rod (241) is riveted to the hood connecting member (221) via a rivet shaft E (242), a torsion spring E (244) is sleeved on the rivet shaft E (242), and two ends of the torsion spring E (244) respectively abut against the rear connecting rod (241) and the hood connecting member (221), thereby causing the rear connecting rod (241) and the hood connecting member (221) to rotate around the rivet shaft E (242); The other end of the rear connecting rod (241) is riveted to the hood connecting member (2) via a rivet shaft F (243), a torsion spring F (245) is sleeved on the rivet shaft F (243), and two ends of the torsion spring F (245) respectively abut against the rear connecting rod (241) and the hood connecting member (2), thereby causing the rear connecting rod (241) and the hood connecting member (2) to rotate around the rivet shaft F (243).

7. The hood hinge for predictably triggering active pedestrian protection according to claim 6, characterized in that: A limiting pin (22) is fixedly provided on the hood connecting member (2). The limiting pin (22) is located in the middle of the front connecting rod (231) and the rear connecting rod (241) and is used to limit the rotation angle of the front connecting rod (231).

8. The hood hinge with a torsion spring 2163 that can predictably trigger active pedestrian protection according to claim 1, characterized in that: The anti-vibration mechanism comprises a rubber block (217) and a hood anti-vibration hole (20), wherein the rubber block (217) is fixed to the hood connector (2) by snapping, and the hood anti-vibration hole (20) is a through hole on the hood connector (221), and the rubber block (217) and the hood anti-vibration hole (20) are positioned opposite to each other.

9. The hood hinge for predictably triggering active pedestrian protection according to claims 2 and 6, characterized in that: When the driver receives the pop-up signal, the driver pulls the release end cable (2122), causing the pawl (2151) connected to the release end cable (2122) to rotate counterclockwise around the rivet axis A (2152), thereby disengaging the lock tongue (2161) from the pawl (2151), and finally causing the lock rod (223) to disengage from the groove on the lock tongue (2161). After losing the limit control of the lock tongue (2161), the lock rod (223) simultaneously releases the torsion spring C (234), the torsion spring D (235), the torsion spring E (244) and the torsion spring F (245), and releases the torsional energy stored in the torsion spring to the hood connector (221), thereby unlocking and opening the hood.

10. The hood hinge for predictably triggering active pedestrian protection according to claims 2 and 6, characterized in that: When the driver receives the reset command, the driver pulls the hood connection end pull wire (2121), causing the locking rod (223) fixed to the hood connector (221) to move downward. After the locking rod (223) contacts the lock tongue (2161), it drives the lock tongue (2161) to rotate around the rivet axis B (2162). After the lock tongue (2161) contacts the pawl (2151), it continues to drive the pawl (2151) to rotate around the rivet axis A (2152) until the lock tongue (2161) and the pawl (2151) are in contact with each other and are in a locked state, thereby achieving the re-locking and resetting of the hood connector (221) and the hood connector (2).

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