An integrated electric front cover lock with double pull and double electrolysis

Abstract

The present invention provides an integrated electric front cover lock with double pull and electrolysis, including a pawl assembly, a lock tongue assembly, an electrolytic assembly and a manual unlocking assembly. The pawl assembly and the lock tongue assembly can rotate relative to each other and form a fully open state, a semi-locked state or a fully locked state according to the position state. The electrolytic assembly and the manual unlocking assembly are respectively used for electric unlocking and manual unlocking of the front cover lock. By introducing a double-pull unlocking structure with a combined design of a lever and a tongue piece into the manual unlocking assembly, the movement of the pawl assembly and the disengagement process of the lock tongue assembly are decomposed into two steps, which reduces the number and time of direct engagement of the pawl assembly and the lock tongue assembly during the unlocking process, reduces the demand for Z-direction space, is conducive to realizing a compact design of the lock body, and significantly improves wear resistance and extends service life.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile hood locks, and in particular to an integrated electric hood lock with double-pull and double-electrolysis functions. Background Art

[0002] In the rapidly developing automotive industry, particularly in the new energy vehicle sector, technological advancement and innovation in hood lock systems, as key components for vehicle safety and convenience, are crucial. With the accelerating trend toward intelligent and convenient vehicles, and OEMs' continued pursuit of high-quality, lightweight, compact, and low-cost products, traditional hood lock systems are struggling to meet market demand.

[0003] While the design and application of electric bonnet locks are becoming increasingly widespread in the current market, their development still faces numerous challenges. Most existing electric bonnet locks utilize a split-body structure, whereby the electrolytic and self-priming functions are performed by two separate components: an electrolytic actuator and a pull-in actuator. This design not only results in a bulky system, increasing the difficulty of vehicle layout, but also increases the complexity and cost of manufacturing and assembly. Furthermore, the numerous components of a split-body electric bonnet lock increase system failure points and maintenance difficulties, posing a potential threat to vehicle safety and reliability.

[0004] Another common electric hood lock design utilizes a single, high-torque actuator, achieving both electrolytic and self-priming functions by matching two pull wires. While this design simplifies the system structure to some extent, it still presents issues of bulk and weight, hindering the lightweight design of the entire vehicle. Furthermore, the use of a high-torque actuator increases energy consumption and costs, impacting the range and affordability of electric vehicles.

[0005] However, in actual application, the above solution has problems such as large Z-axis dimension and limited service life. When faced with customers' requirements for the same assembly space with different configurations of the same model, the adaptability of existing electric hood locks seems to be insufficient. Customized development is often required, and door locks with corresponding configurations need to be developed separately, which increases costs and cycles. The complex structural design and assembly process lead to increased manufacturing costs and also affect production efficiency. Summary of the Invention

[0006] In light of this, the present invention proposes an integrated electric hood lock with a double-pull and double-electrolysis mechanism, aiming to address the technical issues existing automotive hood locks face regarding service life, structural complexity, and placement flexibility. Conventional hood locks often suffer from a short service life due to the excessive engagement time and force required between the bolt and pawl assemblies. Furthermore, their complex overall structure hinders flexible placement throughout the vehicle.

[0007] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0008] An integrated electric front cover lock with double pull and double electrolysis, comprising:

[0009] The pawl assembly is rotatably arranged to disengage from the bolt assembly, or to abut against the bolt assembly in a critical state where the bolt assembly is about to disengage, or to abut against the bolt assembly to form a fully open state, a half-locked state, or a fully locked state, depending on the direction of rotation.

[0010] The bolt assembly is rotatably arranged and can abut against the pawl assembly to lock or disengage to unlock;

[0011] An electrolytic assembly, comprising an electric toggle lever and a motor device, wherein the motor device is capable of driving the electric toggle lever to rotate, and when the electric toggle lever rotates, the pawl assembly is capable of rotating in an opening direction to a position where the pawl assembly is in a semi-locked state or a fully open state with the bolt assembly, and the electric toggle lever is capable of driving the pawl assembly to rotate in a direction opposite to the opening direction to electrically engage the bolt assembly;

[0012] A manual unlocking assembly includes an unlocking pull device, a lever, and a tongue. The lever rotates under the action of the unlocking pull device and can be reset after the lever loses its force. The tongue is hingedly arranged on the lever and can rotate when the lever rotates and reset when the lever resets.

[0013] When unlocking in the fully locked state, the electric front cover lock receives the first unlocking command, and the pawl assembly is pushed by the electric toggle lever or the toggle lever to a critical state or a state before disengagement from the lock tongue assembly, completing the first unlocking; the electric front cover lock receives a second unlocking command within a preset time after receiving the first unlocking command, and the electric toggle lever continues to push the pawl assembly to disengage it from the lock tongue assembly, or the toggle lever is pulled and rotated again by the unlocking pulling device after being reset, and the tongue piece drives the pawl assembly to continue moving and disengage from the lock tongue assembly, completing the second unlocking.

[0014] Furthermore, a tension spring is provided on the lock tongue assembly, and the tension spring is used to pull the lock tongue assembly to rotate in the opening direction and provide an elastic pushing force for opening the front cover when the lock tongue assembly is in a fully open state.

[0015] Furthermore, the motor device drives the electric toggle lever to rotate through a gear transmission mechanism, and the gear transmission mechanism includes a worm, a double-linked spur gear, and a double-linked spur gear. The motor device drives the double-linked spur gear to rotate through the worm, and the double-linked spur gear is meshed with the fan gear through the double-linked spur gear and can drive the fan gear to rotate. The fan gear is connected to the electric toggle lever as a whole and can rotate along the lock tongue rivet. When the toggle lever rotates, it can drive the double-linked spur gear to rotate eccentrically and engage and disengage with the fan gear.

[0016] Furthermore, the electric front cover lock also includes an upper shell and a lower shell, the upper shell is detachably fixedly connected to the lower shell, a motor device and a gear transmission mechanism are arranged between the upper shell and the lower shell, the motor device drives the electric toggle lever to rotate forward or reverse through the gear transmission mechanism, a first base plate is arranged on the side of the upper shell away from the lower shell, and the lock tongue assembly is hingedly fixed between the first base plate and the upper shell.

[0017] Furthermore, the pawl assembly is hingedly fixed to the upper shell on a side away from the lower shell by a pawl rivet, and a lock tongue signal lever is provided on the upper shell. The lock tongue signal lever is hingedly fixed relative to the upper shell and can be reset. During the rotation of the lock tongue assembly, the locking part and the half-lock sensing part on the lock tongue assembly touch the lock tongue signal lever to detect the status of the fully locked position and the half-locked position.

[0018] Furthermore, the lock tongue assembly includes a lock tongue body, a first abutting boss, a locking portion, a half-locked sensing portion, and a first connecting column, wherein the locking portion, the half-locked sensing portion, and the first abutting boss are arranged on the lock tongue body in a clockwise order, and the locking portion and the half-locked sensing portion are used for detecting the locked position of the front cover lock, and the first abutting boss is used for the lock tongue assembly and the pawl assembly to abut and limit during the locking or unlocking process, and the first connecting column is arranged on the lock tongue body for connecting a fixed tension spring. When in use, the pawl metal part in the pawl assembly and the first abutting boss in the lock tongue assembly contact and support each other, so that the front cover lock remains in a closed state, and the front cover lock is in a fully locked state at this time; when the electric front cover lock receives the first electric unlocking command, the motor device drives the electric toggle rod to push The electric toggle lever stops rotating, and the front cover lock is opened to a semi-locked state. The electric toggle lever remains stationary, waiting for the second electric unlocking command; when the electric front cover lock receives the second electric unlocking command within the preset time of receiving the first unlocking command, the motor device rotates to drive the electric toggle lever to rotate again, pushing the ratchet assembly to rotate and completely separate it from the lock tongue assembly, completing the full opening of the front cover lock. After the front cover lock is fully opened, the electric toggle lever resets after the preset delay time until it stops at the initial position of the electric toggle lever when the first reset switch is triggered. The electric toggle lever stops rotating, and the electric front cover lock is in the open state.

[0019] Furthermore, the lever includes a lever body, a first pulling claw, and a first pulling claw. The first pulling claw and the first pulling claw are arranged at an angle on the lever body. The first pulling claw is used to be connected to the pull wire of the unlocking pulling device. The first pulling claw is used to push the pawl assembly to move during the first manual unlocking.

[0020] Furthermore, the tongue is hingedly fixed on the first pawl, a second return torsion spring is provided at the rotating shaft of the tongue, a limit column is provided on the pawl assembly, the limit column is used for the first pawl to abut and limit during the first manual unlocking movement, and a first push groove is provided on the pawl assembly, the first push groove is used for the tongue to push and limit during the second manual unlocking movement.

[0021] Furthermore, by modifying the structure of the first abutment limit contour on the lever and removing the tongue and the second return torsion spring, the first abutment limit contour is the contour edge line on the first lever claw that pushes the limit column to move, and the double-pull unlocking structure of the electric front cover lock can be modified to a single-pull unlocking structure for assembly.

[0022] Furthermore, a second pulling claw is provided on the lever body, and the second pulling claw is provided on the side of the first pulling claw away from the first pulling claw, one end of the second pulling claw is connected to the disengagement connecting rod, and the other end of the disengagement connecting rod is disengaged from the lever, and when the lever rotates under the pulling action of the unlocking pulling device, it drives the disengagement connecting rod and the disengagement lever to crank rotation, and the disengagement lever separates the sector gear and the double-linked spur gear in the gear transmission mechanism when it rotates.

[0023] Compared with the prior art, the integrated electric front cover lock with double pull and double electrolysis of the present invention has the following advantages:

[0024] (1) The integrated electric front cover lock with double pull and two electrolysis functions described in the present invention combines the electric switch lock and manual unlocking functions into one through integrated design, simplifies the structure, reduces costs, and improves the reliability and durability of the system. Through optimized design and innovative mechanism, a new double-pull unlocking structure with a combined design of a lever and a tongue is introduced, and the movement of the pawl assembly and the disengagement process of the lock tongue assembly are decomposed into two steps, so that the abutting parts of the pawl assembly and the lock tongue assembly do not need to maintain contact throughout the unlocking process, thereby reducing the demand for Z-direction space, which is conducive to realizing a compact design of the lock body, and at the same time reducing the number and time of direct engagement between the pawl assembly and the lock tongue assembly, thereby improving its wear resistance and extending its service life.

[0025] (2) The integrated electric front cover lock with double pull and two electrolysis functions described in the present invention can remove the obstruction of the gear transmission mechanism by manually operating the lever, ensuring that the front cover lock can be opened or closed smoothly, optimizing the unlocking angle, and enhancing the flexibility and adjustability of manual unlocking, so that the unlocking operation is more in line with the actual needs of the client. The integrated design of electric unlocking and manual unlocking functions simplifies the structure, reduces costs, and improves the stability and durability of the system, providing users with a more stable, durable and easy-to-arrange option, meeting the needs of various application scenarios, and promoting the further development of front cover lock technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 This is a schematic structural diagram of an electric front cover lock according to an embodiment of the present invention;

[0028] Figure 2 Schematic diagram of the exploded structure of the electric front cover lock according to an embodiment of the present invention;

[0029] Figure 3This is a structural schematic diagram of the bolt assembly and the pawl assembly in a fully locked state according to an embodiment of the present invention;

[0030] Figure 4 This is a structural schematic diagram of the bolt assembly and the pawl assembly in a semi-locked state according to an embodiment of the present invention;

[0031] Figure 5 This is a structural schematic diagram of the electric toggle lever, the bolt assembly, the pawl assembly, and the toggle lever in the electric hood lock according to an embodiment of the present invention in a semi-locked state;

[0032] Figure 6 This is a structural schematic diagram of the bolt assembly and the pawl assembly in a fully open state according to an embodiment of the present invention;

[0033] Figure 7 This is a structural schematic diagram of the electric toggle lever, bolt assembly, pawl assembly, and toggle lever in the electric hood lock according to an embodiment of the present invention in a fully open state;

[0034] Figure 8 Schematic diagram of the structure of the electric toggle lever and the toggle lever in the semi-locked state when the electric hood lock according to an embodiment of the present invention changes from a fully locked closed state to a semi-locked state;

[0035] Figure 9 This is a structural diagram of the electric bonnet lock according to an embodiment of the present invention, in which the bolt assembly and the pawl assembly are in abutment with each other after the electric bonnet lock changes from a semi-locked state to a fully locked closed state;

[0036] Figure 10 This is a schematic diagram of the structure of the electric front cover lock according to an embodiment of the present invention when it is manually pulled and unlocked;

[0037] Figure 11 Schematic diagram of the structure of the bolt assembly, pawl assembly, lever and unlocking pulling device in the electric hood lock according to an embodiment of the present invention in the first manual unlocking state;

[0038] Figure 12 for Figure 11 Schematic diagram of the back view of the structure shown in;

[0039] Figure 13 This is a schematic structural diagram of the electric front cover lock according to an embodiment of the present invention when it is manually unlocked for the second time;

[0040] Figure 14 Schematic diagram of the structure of the bolt assembly, pawl assembly, lever and unlocking pulling device in the electric hood lock according to an embodiment of the present invention in the second manual unlocking state;

[0041] Figure 15 for Figure 14 Schematic diagram of the back view of the structure shown in;

[0042] Figure 16 for Figure 15 Schematic diagram of the right side of the structure;

[0043] Figure 17 Schematic diagram of the structure of the shift lever according to an embodiment of the present invention;

[0044] Figure 18 This is a schematic diagram of the exploded structure of the bolt assembly, pawl assembly, lever, unlocking pull device, and cover plate of the electric front cover lock according to an embodiment of the present invention during assembly;

[0045] Figure 19 This is an enlarged view of a node of the first guide post on the tongue piece guiding the movement in the first guide groove on the cover plate according to an embodiment of the present invention;

[0046] Description of reference numerals:

[0047] 1. Cover plate; 2. Lock tongue assembly; 201. Lock tongue body; 202. First abutting boss; 203. Locking portion; 204. Half-lock sensing portion; 205. First connecting column; 3. Lock tongue rivet; 4. Unlocking pulling device; 5. Pawl rivet; 6. First return torsion spring; 7. Push rod; 701. First pawl; 702. First pawl; 703. Push rod body; 704. Second hinge hole; 705. Second pawl; 706. First abutting limiting profile; 8. Tongue; 801. First hinge hole; 9. Second return torsion spring; 10. Third return torsion spring; 11. Pawl assembly; 12. First abutting groove; 13. Limiting column; 14. First guide groove; 15. First hinge column; 16. First guide column; 17. Tension spring; 18. First base plate; 19. First connecting plate; 20. Lock tongue signal lever; 21. Half-lock signal switch; 22. Full-lock signal switch; 23. Upper shell; 24. Ratchet signal switch; 25. First reset switch; 26. Link return spring; 27. Electric toggle lever; 28. Motor device; 29. ​​Lower shell; 30. First reinforcing plate; 31. Disengagement link; 32. Disengagement lever; 33. Gear transmission mechanism; 34. First rotating shaft; 35. Worm; 36. Double-linked spur gear; 37. Double-linked spur gear; 38. Sector gear. DETAILED DESCRIPTION

[0048] In order to make the technical means, objectives and effects of the present invention easier to understand, embodiments of the present invention are described in detail below with reference to specific figures.

[0049] It should be noted that all terms used in the present invention to indicate direction and position, such as "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "top", "low", "lateral", "longitudinal", "center", etc., are only used to explain the relative position relationship and connection status between the components in a certain specific state (as shown in the accompanying drawings). They are only for the convenience of describing the present invention, and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention. In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0050] In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical connections; direct connections or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0051] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0052] In the ever-changing automotive industry, especially amidst the booming new energy vehicle market, technological innovation in hood lock systems, as an integral component of vehicle safety and convenience, is particularly urgent. With consumers' growing demand for intelligent and convenient vehicles, and OEMs' relentless pursuit of high-quality, lightweight, compact, and low-cost products, traditional hood lock systems are gradually becoming increasingly limited and unable to meet the increasingly diverse market demands.

[0053] As the automotive industry continues to pursue lightweighting and convenience, the design and optimization of hood lock systems has become a key area of ​​technological innovation. Traditional hood lock systems in most models utilize an interior handle for unlocking. The user then needs to manually engage a safety hook handle at the front of the vehicle to open the hood. This process is not only cumbersome but also presents significant safety hazards and inconvenience. The safety hook handle, located outside the vehicle and close to the engine, is susceptible to contamination and can burn the user's fingers due to the high engine temperature. Therefore, the traditional hood unlocking process is not only cumbersome but also exposes users to the risk of contamination and burns, significantly impacting user experience and safety. To address this challenge, new hood lock system solutions have emerged on the market that eliminate the safety hook and adopt a dual-pull mechanism. However, existing dual-pull mechanisms primarily rely on the interlocking mechanism of a pawl and a bolt. While simple, this design suffers from issues such as excessive Z-dimensioning, wear at the engagement point, insufficient structural strength, and insufficient spring force during unlocking. This results in a limited service life, typically under 2,500 cycles, making it difficult to meet the growing demand for long-term use. Especially under the new trend that electric vehicle hood locks also have storage functions, new requirements are put forward for the service life of hood locks as high as 30,000 to 50,000 times. The existing hood lock system is far from meeting its usage requirements.

[0054] In view of the many problems existing in the above-mentioned prior art, the present invention proposes an integrated electric front cover lock with double pull and two electrolysis functions, aiming to solve the pain points in the current electric front cover lock field through innovative design and structural optimization.

[0055] like Figures 1 to 19 As shown, the present application discloses an integrated electric front cover lock with double pull and double electrolysis, comprising:

[0056] The pawl assembly 11 is rotatably arranged. When rotating, it is disengaged from the bolt assembly 2, or pressed against the bolt assembly 2 in a critical state where the bolt assembly is about to disengage, or pressed against the bolt assembly 2 to form a fully open state, a half-locked state, or a fully locked state according to the rotation direction.

[0057] The bolt assembly 2 is rotatably arranged and can abut against the pawl assembly 11 to lock or disengage to unlock;

[0058] The electrolytic assembly includes an electric toggle lever 27 and a motor device 28. The motor device 28 can drive the electric toggle lever 27 to rotate. When the electric toggle lever 27 rotates, it can push the pawl assembly 11 to rotate in the opening direction to a position where it is in a semi-locked state or a fully open state with the bolt assembly 2. The electric toggle lever 27 can also drive the pawl assembly 11 to rotate in the opposite direction of opening to electrically engage the bolt assembly 2.

[0059] The manual unlocking assembly includes an unlocking pull device 4, a lever 7, and a tongue 8. The lever 7 rotates under the action of the unlocking pull device 4 and can be reset after the force is lost. The tongue 8 is hingedly provided on the lever 7 and can rotate when the lever 7 rotates and reset when the lever 7 resets.

[0060] When unlocking in the fully locked state, the electric front cover lock receives the first unlocking command, and the pawl assembly 11 is pushed by the electric toggle lever 27 or the toggle lever 7 to a critical state of disengagement from the lock tongue assembly 2 or a state before disengagement, completing the first unlocking; the electric front cover lock receives a second unlocking command within a preset time after receiving the first unlocking command, and the electric toggle lever 27 continues to push the pawl assembly 11 to disengage it from the lock tongue assembly 2, or the toggle lever 7 is reset and pulled and rotated again by the unlocking pulling device 4, and the tongue piece 8 drives the pawl assembly 11 to continue moving and disengage from the lock tongue assembly 2, completing the second unlocking.

[0061] The integrated electric front cover lock with double pull and electrolysis disclosed in this application includes three states: fully open state, half locked state and fully locked state. When the electric front cover lock is in the fully locked state, the pawl metal part in the pawl assembly 11 and the first abutting boss 202 in the lock tongue assembly 2 contact and limit each other, so that the electric front cover lock remains in the closed state. Figure 3 As shown; when electrically unlocked, the electric front cover lock can be set to a semi-locked state according to customer needs. Under the first electric unlocking command, the pawl assembly 11 is driven by the electric toggle rod 27. When the pawl assembly 11 and the lock tongue assembly 2 are in abutment and rotate, the pawl assembly 11 contacts the pawl signal switch 24. At this time, the logic signal judges and stops the rotation of the motor device 28, that is, the electric toggle rod 27 remains stationary at this time. At this time, the front cover lock is opened to the semi-locked state, and the lock tongue assembly 2 and the pawl assembly 11 are in a critical position state about to disengage, waiting for the second unlocking command. The semi-locked state position is as shown in FIG. Figure 4 、 Figure 5 As shown; when the pawl assembly 11 is rotated and unlocked under the driving action of the electric toggle lever 27, until the pawl assembly 11 and the first abutment boss 202 in the lock tongue assembly 2 are completely disengaged, the electric front cover lock is fully opened, and its state is as shown Figure 6 、 Figure 7If the front cover lock loses power or needs to be manually unlocked due to other circumstances, the first pull of the unlocking pull device 4 will cause the lever 7 to drive the pawl assembly 11 to a critical state where it disengages from the lock tongue assembly 2. At this point, the front cover lock is opened to a semi-locked state. Then, the unlocking pull device 4 loses power or resets, and the lever 7 and tongue piece 8 also reset. Thereafter, when the unlocking pull device 4 pulls the lever 7 again, the tongue piece 8 will relay and drive the pawl assembly 11 to continue moving, ultimately achieving complete disengagement from the lock tongue assembly 2, completing the unlocking process.

[0062] The integrated electric front cover lock with double pull and two electrolysis functions described in the present application combines the electric switch lock and manual unlocking functions into one through an integrated design, simplifies the structure, reduces costs, and improves the reliability and durability of the system. Through optimized design and innovative mechanism, a new double-pull unlocking structure with a combined design of the lever 7 and the tongue piece 8 is introduced, and the movement of the pawl assembly 11 and the disengagement process of the lock tongue assembly 2 are decomposed into two steps, so that the abutting parts of the pawl assembly 11 and the lock tongue assembly 2 do not need to maintain contact throughout the unlocking process, thereby reducing the demand for Z-direction space, which is conducive to realizing a compact design of the lock body, and at the same time reducing the number and time of direct engagement of the pawl assembly 11 and the lock tongue assembly 2, thereby improving its wear resistance and extending its service life.

[0063] As a preferred example of the present application, a tension spring 17 is provided on the lock tongue assembly 2. The tension spring 17 is used to pull the lock tongue assembly 2 to rotate in the opening direction and provide a spring force to open the front cover when the lock tongue assembly 2 is in the fully open state. In the present application, the reset device of the lock tongue assembly 2 is set as the tension spring 17. The tension spring 17 is used to apply a force to the lock tongue assembly 2 to move in the unlocked state. Since a large pre-tightening force can be applied to the tension spring 17, the lock tongue assembly 2 can reliably bounce up the car front cover in the fully open state. By using the tension spring to enable the lock tongue assembly 2 to push the car front cover open in the fully open state, it can be applied to different front covers of various weight designs. As an example of the present application, the tension spring 17 applies a force to the bolt assembly 2 causing it to move clockwise, and the pawl assembly 11 is capable of rotating along the pawl rivet 5. A third reset torsion spring 10 is provided at the pawl rivet 5. The third reset torsion spring 10 is used to reset the pawl assembly 11 and applies a force to the pawl assembly 11 causing it to move counterclockwise. When the unlocking pulling device 4 pulls the pawl assembly 11 to unlock, the pawl assembly 11 rotates clockwise. Preferably, one end of the tension spring 17 is connected to the first connecting post 205 on the bolt assembly 2, and the other end extends out of the bolt assembly 2 and is secured to the cover plate 1 or the first base plate 18.

[0064] This arrangement achieves automatic resetting of the bolt assembly 2 by introducing and using the tension spring 17, ensuring reliable pop-up of the front cover in the fully open state, adapting to the design of front covers of different weights, and enhancing the versatility and applicability of the product.

[0065] As a preferred example of the present application, the electric front cover lock further includes an upper shell 23 and a lower shell 29, wherein the upper shell 23 and the lower shell 29 are detachably fixedly connected, and a motor device 28 and a gear transmission mechanism 33 are provided between the upper shell 23 and the lower shell 29. The motor device 28 drives the electric toggle lever 27 to rotate forward or reverse through the gear transmission mechanism 33. A first base plate 18 is provided on the side of the upper shell 23 away from the lower shell 29. The lock tongue assembly 2 is hingedly fixed between the first base plate 18 and the upper shell 23 and can be driven to rotate by the electric toggle lever 27, thereby realizing the electric opening or self-closing control of the electric front cover lock. In the example of the present application, the lock tongue assembly 2 and the electric toggle lever 27 are both hingedly fixed on the lock tongue rivet 3.

[0066] As a preferred example of the present application, the pawl assembly 11 is hingedly fixed to the side of the upper shell 23 away from the lower shell 29 by a pawl rivet 5, and a lock tongue signal lever 20 is provided on the upper shell 23. The lock tongue signal lever 20 is hingedly fixed relative to the upper shell 23 and can be reset. During the rotation of the lock tongue assembly 2, the locking part 203 and the half-lock sensing part 204 on the lock tongue assembly 2 touch the lock tongue signal lever 20 to detect the status of the fully locked position and the half-locked position. As a specific example of the present application, a half-lock signal switch 21, a fully-lock signal switch 22, a pawl signal switch 24, and a first reset switch 25 are further provided on the side of the upper shell 23 away from the lower shell 29. The half-lock signal switch 21 is used to contact the bolt signal lever 20 to detect the half-locked position of the front cover lock, the fully-lock signal switch 22 is used to contact the bolt signal lever 20 to detect the fully-open position of the front cover lock, the first reset switch 25 is used to contact the electric toggle lever 27 to detect the reset position of the electric toggle lever 27, and the pawl signal switch 24 is used to contact the pawl assembly 11 to detect whether the pawl assembly 11 moves to the fully-locked position, the half-locked position, or the fully-open position. The half-lock signal switch 21, the fully-lock signal switch 22, the first reset switch 25, and the pawl signal switch 24 are used to detect whether the pawl assembly 11 and the bolt assembly 2 are in the fully-locked, half-locked, or fully-open position, and whether the electric toggle lever 27 is in the reset position, thereby achieving reliable control of the motor device 28.

[0067] As an example of the present application, the lock tongue assembly 2 includes a lock tongue body 201, a first abutting boss 202, a locking portion 203, a half-locked sensing portion 204, and a first connecting column 205, wherein the locking portion 203, the half-locked sensing portion 204, and the first abutting boss 202 are arranged on the lock tongue body 201 in a clockwise order, and the locking portion 203 and the half-locked sensing portion 204 are used for detecting the locking position of the front cover lock. The first abutting boss 202 is used for the lock tongue assembly 2 and the pawl assembly 11 to abut and limit during the locking or unlocking process. The first connecting column 205 is arranged on the lock tongue body 201 for connecting and fixing the tension spring 17. When in use, as shown in FIG. Figure 3 As shown, the pawl metal part in the pawl assembly 11 and the lock tongue metal part in the lock tongue assembly 2 contact each other to keep the front cover lock in the closed state. At this time, the front cover lock is in the fully locked state. When the electric front cover lock receives the first electric unlocking command, the motor device 28 drives the electric toggle lever 27 to push the pawl assembly 11 to rotate and separate it from the lock tongue assembly 2. When the electric toggle lever 27 rotates to the point where the pawl assembly 11 triggers the pawl signal switch 24 and the lock tongue signal toggle lever 20 triggers the half-lock signal switch 21, the electric toggle lever 27 stops rotating. At this time, the front cover lock is opened to the half-lock position, as shown in FIG. Figure 4 、 Figure 5 As shown, at the same time, the electric toggle lever 27 remains stationary, waiting for the second electric unlocking command, at which time the front cover lock is in a semi-locked state; when the integrated electric front cover lock with double pull and electrolysis described in the present application receives the unlocking command (the second electric unlocking command must be received within the preset time of the first unlocking command to avoid false triggering and confirm that the user has a real unlocking intention, and the preset time is an empirical preset time), the motor device 28 rotates to drive the electric toggle lever 27 to rotate again, pushing the pawl assembly 11 to rotate so that it is completely separated from the lock tongue assembly 2, completing the full opening of the front cover lock. After the front cover lock is fully opened, the electric toggle lever 27 resets after a certain delay until it stops at the initial position of the electric toggle lever 27 when the first reset switch 25 is triggered, and the electric toggle lever 27 stops rotating. At this time, the lock tongue assembly 2 is fully opened, as shown in FIG. Figure 6 、 Figure 7 As shown, at the same time, the electric toggle lever 27 is reset after a certain delay until the first reset switch 25 is triggered and stops at the initial position of the electric toggle lever 27. At this time, the front cover lock is in the fully open state; when the integrated electric front cover lock with double pull and electrolysis as described in the present application receives a command to close the front cover or the front cover is manually lowered, when the lock catch of the front cover enters the half-locked position of the front cover lock, and the lock tongue assembly 2 does not touch the full lock signal switch 22, and the full lock signal switch 22 and the pawl signal switch 24 have no corresponding logic signal output, as shown in FIG. Figure 8As shown, the position of the electric toggle lever 27 when the front cover lock is in the half-locked state is schematically illustrated. It is logically judged that the intention to close the door is at this time, and the electric suction function is started at this time, and the electric suction is performed to the fully locked state; when the front cover lock is in the half-locked state, the motor device 28 is started to drive the electric toggle lever 27 to push the lock tongue assembly 2 until the full lock signal switch 22 and the pawl signal switch 24 are triggered and stop. At this time, the front cover lock is electrically sucked into the fully locked position, and the electric toggle lever 27 pushes the lock tongue assembly 2 to the fully locked position, as shown in FIG. Figure 9 As shown, at this time, the lock tongue assembly 2 and the pawl assembly 11 are in contact with each other as shown in FIG. Figure 3 At the same time, the electric toggle lever 27 is reset after a certain delay until the first reset switch 25 is triggered and stops at the initial position of the electric toggle lever 27.

[0068] The above-mentioned setting drives the electric toggle lever 27 through the motor device 28 to achieve precise control of the lock tongue assembly 2 and the pawl assembly 11. In the locked state, the pawl assembly 11 is in close contact with the lock tongue assembly 2 to keep the front cover closed. After receiving the unlocking command, the motor device 28 is started, and the electric toggle lever 27 pushes the pawl assembly 11 to rotate, so that it separates from the lock tongue assembly 2 to achieve unlocking. If a half-lock function is configured, then under one unlocking command, the front cover lock opens to a half-locked state and waits for a second command to fully unlock. During the closing process, the motor device 28 is started again, driving the lock tongue assembly 2 to reset to a fully locked state, and the state of the front cover lock is detected in real time through multiple signal switches to ensure reliable control of the motor device 28. In addition, an electric suction function is designed to ensure that the front cover can automatically be sucked into a fully locked state when in a half-locked state. The operation is convenient and efficient, ensuring the precise control of the motor device in different states, avoiding misoperation, and improving the stability and safety of the system.

[0069] As a preferred example of the present application, the pawl rivet 5 is connected and fixed to the lock tongue rivet 3 via a first connecting plate 19, or the pawl rivet 5 is integrally arranged at one end of the first connecting plate 19, and the lock tongue rivet 3 is arranged at the other end of the first connecting plate 19 and passes through the first connecting plate 19. A pawl buffer pad is provided on the upper shell 23, and the pawl buffer pad is used to limit the rotation angle of the pawl assembly 11 relative to the pawl rivet 5. This arrangement enhances the stability and reliability of the locking by optimizing the connection structure between the pawl assembly 11 and the lock tongue assembly 2, so that the front cover can be locked more firmly when closed, effectively preventing accidental opening due to vibration or external force, and improving the user experience.

[0070] As a preferred example of the present application, the lever 7 is arranged on a side of the upper shell 23 away from the lower shell 29. The lever 7 rotates under the pulling action of the unlocking pulling device 4 to push the pawl assembly 11 toward the unlocking direction and resets after the unlocking pulling device 4 loses force.

[0071] This setting discloses a structure of a front cover lock with a single-pull unlocking function. When unlocking is required, the user provides external force or inputs power through the unlocking pull device 4 to drive the lever 7 to rotate, thereby driving the pawl assembly 11 to rotate toward the unlocking state, thereby realizing manual unlocking of the front cover lock.

[0072] Combined with the tongue piece 8 provided on the lever 7, when unlocking in the fully locked state, the unlocking pulling device 4 pulls the lever 7 to rotate, and the lever 7 drives the pawl assembly 11 to move to a critical state of disengagement from the lock tongue assembly 2 or a state before disengagement, completing the first manual unlocking; after the unlocking pulling device 4 is reset, the lever 7 is pulled to rotate again, and the tongue piece 8 drives the pawl assembly 11 to continue to move and disengage from the lock tongue assembly 2, completing the second manual unlocking.

[0073] This configuration discloses a novel double-pull manual unlocking structure, which mainly includes key components such as the unlocking pull device 4, the lever 7, the tongue piece 8, and the pawl assembly 11. When unlocking is required, the user provides external force or inputs power through the unlocking pull device 4 to drive the lever 7 to rotate. The lever 7 is cleverly designed and can automatically reset after losing external force, which provides a basis for double-pull unlocking. The tongue piece 8 is hinged on the lever 7 and rotates with the rotation of the lever 7 and resets with the reset of the lever 7, playing the role of transmitting motion. The pawl assembly 11 is rotatable and can selectively disengage or press against the lock tongue assembly 2 according to the direction when rotating, thereby realizing the three states of unlocking, half locking, and fully locking. When the front cover lock is in the fully locked state, if the front cover lock loses power or needs to be unlocked manually due to other circumstances, the first pulling of the unlocking pull device 4 will cause the lever 7 to drive the pawl assembly 11 to move to a critical state of disengagement from the lock tongue assembly 2. At this time, the front cover lock is opened to the semi-locked state; then, the unlocking pull device 4 loses power or resets, and the lever 7 and the tongue piece 8 also reset. Thereafter, when the unlocking pull device 4 pulls the lever 7 again, the tongue piece 8 will relay and drive the pawl assembly 11 to continue moving, and finally achieve complete disengagement from the lock tongue assembly 2, completing the unlocking process.

[0074] As a preferred embodiment of the present application, the lever 7 includes a first pawl 701 and a first pawl 702. The first pawl 701 is used to connect to the cable of the unlocking pull mechanism 4, while the first pawl 702 is used to push the pawl assembly 11 during the first manual unlocking operation. The first pawl 701 and the first pawl 702 are arranged at an angle along the first rotation axis 34 of the lever 7. As a preferred embodiment of the present application, the angle formed between the first pawl 701 and the first pawl 702 ranges from 60° to 150°. This arrangement discloses an optimized structure of the lever 7. The lever 7 is cleverly designed to include two key components: the first pawl 701 and the first pawl 702. These two components each perform their respective functions, and together they effectively control and operate the pawl assembly 11. The first pawl 701's primary function is to connect to the cable of the unlocking pull mechanism 4. It acts as a transmission medium, transferring the force of the pulling mechanism to the lever 7. The first pawl 702 is responsible for directly pushing against the pawl assembly 11 during the first manual unlocking operation, causing it to move and thereby unlocking the door. Furthermore, these two components are not simply arranged side by side, but are cleverly arranged at an angle along the first rotation axis 34 of the lever 7. This angle design allows for more flexible movement of the lever 7 during the pulling process, while ensuring that the first pawl 701 and the first pawl 702 can effectively function in their respective working processes.

[0075] By optimizing the structure of the lever 7 as described above, the unlocking operation becomes smoother and more efficient, ensuring the effective transmission of pulling force, reducing energy loss, and improving the reliability and stability of unlocking. At the same time, the design also helps to make the lever 7 more compact and reasonable in overall structure, further enhancing its flexibility and adaptability during the unlocking process.

[0076] As a preferred example of the present application, the lever 7 is limited in position by the action of a first return torsion spring 6, which is used to reset the lever 7 when it loses force. In this example, the first return torsion spring 6 is disposed at the first rotating shaft 34 of the lever 7 and applies a force to the lever 7 opposite to the direction of rotation when the unlocking pull device 4 is pulled. When the unlocking pull device 4 pulls the lever 7 to rotate, it needs to overcome the force applied to the lever 7 by the first return torsion spring 6. When the unlocking pull device 4 loses force or is reset, the lever 7 returns to its original position under the action of the first return torsion spring 6. This configuration discloses a reset mechanism for the lever 7. By introducing the first return torsion spring 6, the lever 7 achieves an automatic reset function, providing the unlocking system with more stable, reliable, and efficient operational performance. This not only simplifies the operating process of the unlocking system, but also reduces errors and failures that may occur due to manual reset, thereby improving the user experience and safety of the entire unlocking system.

[0077] As a preferred embodiment of the present application, a limiting post 13 is provided on the pawl assembly 11. The limiting post 13 is used to abut and limit the first pawl 702 during the first manual unlocking movement. This design, by adding the limiting post 13, provides abutment and limit during the first manual unlocking movement of the first pawl 702, effectively preventing excessive movement or offset of the first pawl 702 during the unlocking process, thereby avoiding potential risks of jamming or failure, ensuring the accuracy and consistency of the unlocking movement, and making the unlocking system more durable and reliable.

[0078] As a preferred example of the present application, the tongue piece 8 is hingedly fixed on the first shift claw 702, and a second reset torsion spring 9 is provided at the rotating axis of the tongue piece 8. The second reset torsion spring 9 is used to hingely fix the tongue piece 8 on the first shift claw 702 as a whole and apply a force to reset the tongue piece 8 when the lever 7 is reset.

[0079] This setting improves the smoothness and reliability of the unlocking operation by optimizing the design of the tongue 8 and its role in the unlocking mechanism; at the same time, the installation of the second reset torsion spring 9 also ensures that the tongue 8 can automatically reset after unlocking, preparing for the next operation, improving the reliability of the unlocking mechanism, extending its service life, and enhancing the performance and user experience of the entire unlocking mechanism.

[0080] As a preferred example of the present application, a first push groove 12 is provided on the pawl assembly 11. The first push groove 12 is used for the tongue piece 8 to push against the limit position during the second manual unlocking. This design ensures that the tongue piece 8 has a stable support point and force direction when pushing the pawl assembly 11 to rotate, thereby improving the accuracy and reliability of unlocking, and enhancing the smoothness of unlocking and user experience.

[0081] In the example of the present application, the first abutting groove 12 is disposed on a side of the limiting column 13 close to the rotating shaft of the lever 7. Due to the above structural design, when the first manual unlocking is performed, the first pawl 702 abuts against the limiting column 13. Due to the position of the first abutting groove 12, the tongue piece 8 does not contact the first abutting groove 12 during the first manual unlocking process. The driving rotation force of the pawl assembly 11 during the first manual unlocking is derived from the first pawl 702 of the lever 7. The interaction between the lever 7 and the pawl assembly 11 is both stable and reliable, laying a solid foundation for subsequent unlocking steps. Subsequently, the lever 7 and the tongue piece 8 are reset. During the second manual unlocking, due to the rotation of the pawl assembly 11 during the first manual unlocking, the tongue piece 8 accurately abuts against the first abutting groove 12. This design enables the tongue piece 8 to push the pawl assembly 11 at an optimized angle and force, thereby driving the pawl assembly 11 and the bolt assembly 2 to achieve double-pull unlocking and disengagement.

[0082] Since the first push groove 12 is located close to the rotation axis of the lever 7, this layout not only enhances the torque effect during unlocking, but also greatly improves the stability and reliability of the two unlocking processes, ensuring the continuity of the unlocking action.

[0083] In the example of the present application, a first guide post 16 is provided on the tongue 8. When the lever 7 is rotated under force, the tongue 8 is limited and guided by the second return torsion spring 9 and the first guide post 16. Under this limited and guided action, the tongue 8 moves along a specific trajectory. During the first manual unlocking, the first pawl 702 abuts against the limiting post 13 provided on the pawl assembly 11. During the movement, the tongue 8 does not contact the pawl assembly 11. The pawl assembly 11 is driven to rotate by the first pawl 702. Then, after the lever 7 and the tongue 8 are reset and the second manual unlocking is performed, the lever 7 no longer abuts against the limiting post 13. The tongue 8 abuts against the first push groove 12 on the pawl assembly 11. When the tongue 8 moves along the specific trajectory under the limited action of the second return torsion spring 9 and the first guide post 16, it pushes the pawl assembly 11 to continue rotating, thereby disengaging from the bolt assembly 2, achieving double-pull unlocking. In the example of the present application, the first guide post 16 is guided by the first guide groove 14 on the cover plate 1. As a specific example of the present application, the cover plate 1 is disposed on a side of the first base plate 18 away from the upper housing 23. The first base plate 18 is a metal plate, and the cover plate 1 is a plastic plate. The first guide groove 14 is arranged in an arc shape on the cover plate 1.

[0084] The integrated electric front cover lock with double pull and electrolysis described in this application realizes the effective driving of the pawl assembly 11 and the smooth disengagement from the lock tongue assembly 2 through the division of labor and cooperation of the two unlocking steps. Combined with the precise limiting and guiding design, the performance of the entire unlocking mechanism and the user experience are further improved.

[0085] The integrated electric front bonnet lock, featuring a double-pull and double-electrolysis mechanism, described in this application, abandons the traditional intermeshing design, thereby avoiding the high torque impact generated by the rebound force during the double-pull process. This improvement greatly enhances the structural stability and durability. Furthermore, the new double-pull unlocking structure achieves a significant reduction in Z-axis dimensions. This optimization not only makes the overall layout of the front bonnet lock more flexible and convenient, but also significantly increases its service life. Specifically, this new front bonnet lock can meet the lifespan requirement of 30,000 to 50,000 uses in the front compartment, fully demonstrating its excellent durability and reliability.

[0086] The integrated electric front hood lock with double pull and double electrolysis described in this application is designed and assembled interchangeably for single pull unlocking and double pull unlocking by modifying the structure of the first abutment limit profile 706 on the lever 7 and adding or removing the tongue 8 and the second return torsion spring 9. The first abutment limit profile 706 is the contour edge of the first lever 702 that pushes the limit column 13 to move.

[0087] On the basis of the above-mentioned double-pull manual unlocking process, if you need to select the structure of the one-pull unlocking function, its working principle is the same as the first manual unlocking in which the unlocking pulling device 4 pulls the lever 7 for the first time to push the pawl assembly 11 toward the opening direction. It is only necessary to modify the lever 7 as shown in the following figure. Figure 17 By removing the dotted outline of the first abutment limit profile 706 and removing the tongue 8 and the second return torsion spring 9, the single-pull unlocking function can be achieved. The integrated electric front bonnet lock with double pull and double electrolysis functions described in this application retains the original basic structure and functions of the electric front bonnet lock and can be interchanged between single-pull unlocking and double-pull unlocking simply by exchanging parts. This modular and interchangeable design principle not only reduces production costs and maintenance difficulties, but also enhances the versatility and adaptability of the product.

[0088] In addition, in some special scenarios, such as when the front cover lock suddenly fails while the motor is unlocking or locking, or the power supply is insufficient to provide sufficient voltage to rotate the motor device 28 to generate the corresponding driving force, the failure of the electric unlocking function will also affect the manual double-pull or single-pull unlocking function.

[0089] In the example of the present application, the gear transmission mechanism 33 includes a worm 35, a double-linked straight-helical gear 36, a double-linked straight-helical gear 37 and other structures. The motor device 28 drives the helical gear part of the double-linked straight-helical gear 36 to rotate through the worm 35, and the spur gear part in the double-linked straight-helical gear 36 drives the double-linked straight-helical gear 37 to rotate. The double-linked straight-helical gear 37 is meshed with the fan gear 38 and can drive the fan gear 38 to rotate. The fan gear 38 is connected to the electric toggle lever 27 as a whole and can rotate along the lock tongue rivet 3. The double-linked straight-tooth gear 37 rotates along the double-linked straight-tooth rivet. An eccentric toggle lever is sleeved on the upper end of the double-linked straight-tooth rivet. The toggle lever 7 is inserted into the hole corresponding to the eccentric toggle lever through the boss cylinder. When the toggle lever 7 rotates, it can drive the eccentric toggle lever to rotate around the double-linked straight-tooth rivet, and the double-linked straight-tooth gear rotates around the eccentric toggle lever. The fan gear 38 is fixedly connected to the electric toggle lever 27 and rotates around the lock tongue rivet 3. When the front cover lock is between the half-locked state and the fully locked state, making it impossible to open the front cover lock normally for maintenance or in an unsafe state, by pulling the lever 7, the eccentric lever is driven to cause the double spur gear 37 to rotate eccentrically, thereby separating the sector gear 38 from the double spur gear 37, and removing the movement obstruction of the gear transmission mechanism 33. At this time, the front cover lock can be opened or fully closed. When the lever 7 is not pulled, the sector gear 38 is engaged with the double spur gear 37. Figure 2 As shown, when the lever 7 is pulled, the eccentric lever rotates, driving the dual spur gears 37 to eccentrically rotate, causing them to engage and disengage with the sector gear 38. This allows the bolt assembly 2 to rotate freely, allowing the front cover lock to be fully opened or closed. By optimizing the gear transmission mechanism, particularly by introducing the eccentric lever and sector gear design, if the front cover lock fails to open properly, a simple manual operation can be used to remove the transmission obstacle, allowing the front cover to open or close smoothly. This improvement effectively avoids the maintenance inconvenience and safety hazards caused by front cover lock failure.

[0090] As a preferred example of the present application, the lever 7 includes a lever body 703, the first pulling claw 701 and the first shifting claw 702 are arranged at an angle to the lever body 703, a second hinge hole 704 is provided on the lever body 703, the second hinge hole 704 is sleeved on the first rotating shaft 34, a second pulling claw 705 is provided on the side of the first pulling claw 701 away from the first shifting claw 702, the second pulling claw 705 is provided on the lever body 703, one end of the second pulling claw 705 is connected to the disengagement link 31, and the other end of the disengagement link 31 away from the second pulling claw 705 is connected to the disengagement lever 32, when the lever 7 rotates under the pulling action of the unlocking pulling device 4, it drives the disengagement link 31 and the disengagement lever 32 to crank, and the disengagement lever 32 separates the sector gear 38 and the double-linked spur gear 37 when rotating. When the unlocking pull device 4 is manually unlocked, the unlocking pull device 4 pulls the pull wire, driving the lever 7 to rotate. The disengagement connecting rod 31 is linked with the disengagement lever 32 and the lever 7, driving the disengagement lever 32 to disengage the gear. Compared with the eccentric lever transmission structure described in the applicant's previously published patent CN202310689541.9, this structure optimizes the unlocking angle requirements, is more adjustable and has a wider range of angle matching requirements in matching the client's manual unlocking angle travel, enhances the flexibility and adjustability of manual unlocking, makes the unlocking angle more in line with the client's actual needs, and improves the user experience. As a preferred example of this application, a connecting rod return spring 26 is provided at the rotating shaft of the disengagement lever 32.

[0091] The integrated electric hood lock with double pull and two electrolysis functions described in the present application includes a lock tongue assembly 2, an unlocking pull device 4, a lever 7, a tongue piece 8, a pawl assembly 11, a cover plate 1, an upper shell 23, an electric toggle lever 27, a motor device 28, a lower shell 29, a first reinforcing plate 30, a gear transmission mechanism 33, and a lock tongue signal lever 20, a half-lock signal switch 21, a full-lock signal switch 22, a pawl signal switch 24, a first reset switch 25 and other signal sensor devices. The motor device 28, the electric toggle lever 27, the gear transmission mechanism 33, the lock tongue signal lever 20, the half-lock signal switch 21, the full-lock signal switch 22, the pawl signal switch 24, and the first reset switch 25 are used for the electric hood lock described in the present application to perform one or two electric unlockings in the electric unlocking state; the unlocking pull device 4, the lever 7, and the tongue piece 8 are used for the electric hood lock described in the present application to perform one or two manual unlockings in the manual unlocking state. The other structures are similar to those of the hood lock in the prior art and are not described in detail here. When the vehicle receives a command to electrically open the hood (e.g., via a remote key, touch screen, etc.), the motor unit 28 begins to rotate, driving the electric toggle lever 27 to push the pawl assembly 11 to unlock. When the vehicle receives a command to close the hood (e.g., via a remote key, touch screen, etc.), and the hood lock triggers the half-lock signal switch, the motor unit 28 rotates the electric toggle lever 27 to push the bolt assembly 2 to close the hood. In the event of a battery failure or other electrical malfunction, the electric hood lock function fails, and the vehicle can be unlocked manually by pulling the hood in one or both directions, allowing the hood to be opened in an emergency or for maintenance.

[0092] In the example of the present application, the lock tongue assembly 2 can rotate along the lock tongue rivet 3, the pawl assembly 11 can rotate along the pawl rivet 5, and a third reset torsion spring 10 is arranged at the pawl rivet 5, and the third reset torsion spring 10 is used to drive the pawl assembly 11 to reset, and the lever 7 can rotate along the lever shaft, and a first reset torsion spring 6 is arranged on the lever shaft. The first reset torsion spring 6 is a lever torsion spring, which is used to reset the lever 7, and the tongue piece 8 is hingedly fixed to the first lever claw 702 of the lever 7, that is, a first hinge column 15 is arranged on the first lever claw 702, and the first hinge hole 801 of the tongue piece 8 is sleeved on the first hinge column 15, and a second reset torsion spring 9 is arranged on the first hinge column 15 for resetting the tongue piece 8.

[0093] When the first pawl 702 is in the unlocking state, the first locking pawl 702 is in the unlocking state, and the first locking pawl 702 is in the unlocking state. During the first manual unlocking process, the tongue 8 slides with the cover plate 1 in the first guide groove 14 under the action of the second return torsion spring 9 and does not participate in the unlocking process.

[0094] After the first manual unlocking lever 7 is reset, the unlocking pulling device 4 is pulled again to drive the lever 7 to rotate. The tongue piece 8 slides along the first guide groove 14 on the cover plate 1 under the action of the second reset torsion spring 9, and the tongue piece 8 enters the engaging abutment feature of the pawl assembly 11, that is, the tongue piece 8 abuts against the first pushing groove 12 on the pawl assembly 11. At this time, the unlocking pulling device 4 continues to pull and drive the lever 7 to rotate, driving the tongue piece 8 to push the pawl assembly 11 to rotate, thereby completing the disengagement of the pawl assembly 11 from the lock tongue assembly 2, completing the second manual unlocking, and realizing the complete opening of the lock.

[0095] After unlocking is completed, the unlocking pulling device 4 loses its force or is reset, and the lever 7 and the tongue 8 return to their original positions, waiting for the next double-pull unlocking operation.

[0096] The integrated electric hood lock with double pull and two electrolysis functions described in the present application is mainly used for the hood of a car, and can also be used for the rear hood of a car. The double-pull unlocking mechanism reduces the direct engagement time and force of the lock tongue assembly and the pawl assembly through step-by-step unlocking, significantly improving the service life of the hood lock, and meeting the service life requirement of the hood lock of an electric car of up to 30,000 to 50,000 times; the non-intermeshing design and the Z-direction size reduction design not only optimize the overall structure of the hood lock, but also make the arrangement of the hood lock on the whole vehicle more flexible and convenient, reduce the weight and cost of the whole vehicle, overcome the limitations of the existing technology, significantly improve the service life and reliability of the hood lock, and meet the service life requirement of the hood lock of an electric car of up to 30,000 to 50,000 times. At the same time, by introducing the disengagement connecting rod 31 and the disengagement lever 32 linked with the lever 7, the problem that the front cover lock cannot be opened normally under certain conditions is solved. The gear transmission mechanism can be removed by manually operating the lever 7 to ensure that the front cover lock can be opened or closed smoothly, the unlocking angle is optimized, and the flexibility and adjustability of manual unlocking are enhanced, making the unlocking operation more in line with the actual needs of the client. The integrated design of electric unlocking and manual unlocking functions simplifies the structure, reduces costs, and improves the stability and durability of the system, providing users with a more stable, durable and easy-to-arrange option, meeting the needs of various application scenarios, and promoting the further development of front cover lock technology.

[0097] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An integrated electric front cover lock with double pull and electrolysis, characterized in that, include: The pawl assembly (11) is rotatably arranged, and when it rotates, it is disengaged from the lock tongue assembly (2) according to the rotation direction, or is pressed against the lock tongue assembly (2) in a critical state where it is about to disengage, or is pressed against the lock tongue assembly (2) to form a fully open state, a half-locked state, or a fully locked state; The lock tongue assembly (2) is rotatably arranged and can abut against the pawl assembly (11) to lock or disengage to unlock; An electrolytic assembly comprises an electric toggle lever (27) and a motor device (28), wherein the motor device (28) is capable of driving the electric toggle lever (27) to rotate, and when the electric toggle lever (27) is rotated, the ratchet assembly (11) is capable of rotating in an opening direction to a position where the ratchet assembly (11) is in a semi-locked state or a fully open state with the bolt assembly (2), and the electric toggle lever (27) is capable of driving the ratchet assembly (11) to rotate in a direction opposite to the opening direction to electrically engage the bolt assembly (2); A manual unlocking assembly comprises an unlocking pulling device (4), a lever (7) and a tongue (8), wherein the lever (7) rotates under the action of the unlocking pulling device (4) and can be reset after losing force, and the tongue (8) is hingedly arranged on the lever (7) and can rotate when the lever (7) rotates and reset when the lever (7) resets; The shift lever (7) comprises a shift lever body (703), a first pulling claw (701), and a first shift claw (702); the first shift claw (702) and the first pulling claw (701) are arranged at an angle on the shift lever body (703); the first pulling claw (701) is used to be connected to a pull line of an unlocking pulling device (4); and the first shift claw (702) is used to push the pawl assembly (11) to move when manually unlocking for the first time; The tongue (8) is hingedly fixed on the first pawl (702), a second return torsion spring (9) is provided at the rotation axis of the tongue (8), a limiting column (13) is provided on the pawl assembly (11), and the limiting column (13) is used for the first pawl (702) to abut and limit during the first manual unlocking movement, and a first pushing groove (12) is provided on the pawl assembly (11), and the first pushing groove (12) is used for the tongue (8) to push and limit during the second manual unlocking movement; When unlocking in the fully locked state, the electric front cover lock receives a first unlocking command, and the pawl assembly (11) is pushed by the electric toggle lever (27) or the toggle lever (7) to a critical state of disengagement from the lock tongue assembly (2) or a state before disengagement, completing the first unlocking; the electric front cover lock receives a second unlocking command within a preset time after receiving the first unlocking command, and the electric toggle lever (27) continues to push the pawl assembly (11) to move so as to disengage it from the lock tongue assembly (2), or, after the toggle lever (7) is reset, it is pulled and rotated again by the unlocking pulling device (4), and the tongue piece (8) drives the pawl assembly (11) to continue moving and disengage from the lock tongue assembly (2), completing the second unlocking.

2. The integrated electric front cover lock with double pull and double electrolysis according to claim 1, characterized in that A tension spring (17) is provided on the lock tongue assembly (2), and the tension spring (17) is used to pull the lock tongue assembly (2) to rotate in an opening direction and to provide a spring force for opening the front cover when the lock tongue assembly (2) is in a fully open state.

3. The integrated electric front cover lock with double pull and double electrolysis according to claim 1 or 2, characterized in that: The motor device (28) drives the electric toggle lever (27) to rotate through a gear transmission mechanism (33). The gear transmission mechanism (33) includes a worm (35), a double-linked straight-bevel gear (36), and a double-linked straight gear (37). The motor device (28) drives the double-linked straight-bevel gear (36) to rotate through the worm (35). The double-linked straight-bevel gear (36) is meshed with a fan-shaped gear (38) through the double-linked straight gear (37) and can drive the fan-shaped gear (38) to rotate. The fan-shaped gear (38) is connected to the electric toggle lever (27) as a whole and can rotate along the lock tongue rivet (3). When the toggle lever (7) rotates, it can drive the double-linked straight gear (37) to rotate eccentrically and to be meshed and separated from the fan-shaped gear (38).

4. The integrated electric front cover lock with double pull and double electrolysis according to claim 3, characterized in that The electric front cover lock further comprises an upper shell (23) and a lower shell (29), wherein the upper shell (23) and the lower shell (29) are detachably fixedly connected, and a motor device (28) and a gear transmission mechanism (33) are arranged between the upper shell (23) and the lower shell (29), wherein the motor device (28) drives the electric toggle lever (27) to rotate forward or reverse through the gear transmission mechanism (33), and a first base plate (18) is arranged on a side of the upper shell (23) away from the lower shell (29), and the lock tongue assembly (2) is hingedly fixed between the first base plate (18) and the upper shell (23).

5. The integrated electric front cover lock with double pull and double electrolysis according to claim 4, characterized in that The pawl assembly (11) is hingedly fixed to a side of the upper shell (23) away from the lower shell (29) via a pawl rivet (5); a lock tongue signal lever (20) is provided on the upper shell (23); the lock tongue signal lever (20) is hingedly fixed relative to the upper shell (23) and can be reset; when the lock tongue assembly (2) is rotating, the locking portion (203) and the half-locking sensing portion (204) on the lock tongue assembly (2) contact the lock tongue signal lever (20) to detect the state of the fully locked position and the half-locked position.

6. The integrated electric front cover lock with double pull and double electrolysis according to claim 5, characterized in that The lock tongue assembly (2) comprises a lock tongue body (201), a first abutting boss (202), a locking portion (203), a half-locking sensing portion (204), and a first connecting column (205), wherein the locking portion (203), the half-locking sensing portion (204), and the first abutting boss (202) are arranged on the lock tongue body (201) in a clockwise order, the locking portion (203) and the half-locking sensing portion (204) are used for detecting the locking position of the front cover lock, and the first abutting boss (202) is used for detecting the locking position of the front cover lock. ) is used for the abutment between the lock tongue assembly (2) and the pawl assembly (11) during the locking or unlocking process, the first connecting column (205) is provided on the lock tongue body (201), and is used for connecting and fixing the tension spring (17). When in use, the pawl metal part in the pawl assembly (11) and the first abutment boss (202) in the lock tongue assembly (2) contact and press against each other, so that the front cover lock remains in a closed state. At this time, the front cover lock is in a fully locked state. When the electric front cover lock receives the first electric unlocking command, the motor assembly The electric toggle lever (27) is driven by the device (28) to push the pawl assembly (11) to rotate so as to separate it from the bolt assembly (2). When the electric toggle lever (27) rotates to the point where the pawl assembly (11) triggers the pawl signal switch (24) and the bolt signal toggle lever (20) triggers the half-lock signal switch (21), the electric toggle lever (27) stops rotating, the front cover lock opens to the half-lock state, and the electric toggle lever (27) remains stationary, waiting for the second electric unlocking command. When the electric front cover lock receives the preset unlocking command of the first time, the electric toggle lever (27) stops rotating. When the second electric unlocking command is received within the time, the motor device (28) rotates to drive the electric toggle lever (27) to rotate again, pushing the pawl assembly (11) to rotate so that it is completely separated from the lock tongue assembly (2), completing the full opening of the front cover lock. After the front cover lock is fully opened, the electric toggle lever (27) resets after a preset delay time until the first reset switch (25) is triggered and stops at the initial position of the electric toggle lever (27). The electric toggle lever (27) stops rotating, and the electric front cover lock is in the open state.

7. The integrated electric front cover lock with double pull and double electrolysis according to claim 6, characterized in that By modifying the structure of the first abutting limiting contour (706) on the shifting lever (7) and removing the tongue piece (8) and the second return torsion spring (9), the first abutting limiting contour (706) is the contour edge line of the first shifting claw (702) that pushes the limiting column (13) to move, and the double-pull unlocking structure of the electric front cover lock can be modified into a single-pull unlocking structure for assembly.

8. The integrated electric front cover lock with double pull and double electrolysis according to claim 7, characterized in that A second pulling claw (705) is provided on the lever body (703), and the second pulling claw (705) is provided on a side of the first pulling claw (701) away from the first pulling claw (702). One end of the second pulling claw (705) is connected to the disengagement connecting rod (31), and the other end of the disengagement connecting rod (31) is connected to the disengagement lever (32). When the lever (7) rotates under the pulling action of the unlocking pulling device (4), it drives the disengagement connecting rod (31) and the disengagement lever (32) to crank. When the disengagement lever (32) rotates, it separates the fan gear (38) and the double-linked spur gear (37) in the gear transmission mechanism (33).

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