M8 mute door lock of new energy electric vehicle

Abstract

The invention discloses a new energy electric vehicle M8 mute door lock which comprises an integrated door lock assembly, an electric control locking device assembly, a multi-mode transmission assembly, a ratchet wheel locking assembly and a mute assembly are integrated in the door lock assembly, the electric control locking device assembly is in driving connection with the multi-mode transmission assembly, and the ratchet wheel locking assembly is in driving connection with the multi-mode transmission assembly. The multi-mode transmission assembly is in linkage fit with the ratchet wheel locking assembly, the door lock assembly is a closed cavity formed by buckling a bottom shell, an upper cover, a motor upper cover and a motor base, and the electric control fastener assembly, the multi-mode transmission assembly, the ratchet wheel locking assembly and the mute assembly are integrated in the closed cavity through integration. The space occupation of the automobile door can be greatly reduced, layout conflicts with other parts in the automobile are avoided, linkage of the sliding arm, the switching piece and the connecting rod is adopted, the sliding arm is driven by the motor to move linearly, and on-off switching of a transmission link is achieved; manual unlocking signals and electric control unlocking signals of an outer handle, a straight push small wrench, an inner buckle and a mechanical key are integrated in a unified mode.

Description

Technical Field

[0001] This invention relates to the field of door lock technology for new energy electric vehicles, and in particular to a silent door lock for the M8 new energy electric vehicle. Background Technology

[0002] Door locks for new energy electric vehicles are core body components that integrate mechanical locking mechanisms, electronic control modules, and multi-mode unlocking functions. They must simultaneously meet the basic requirements of reliable door locking and safe opening, as well as the advanced requirements of new energy vehicles for intelligent interaction, cabin quietness, and compact door space layout. They are a key point connecting vehicle safety systems and user experience.

[0003] However, the traditional door locks widely used in the current new energy electric vehicle field, taking the mainstream 502 lock body as an example, have separate electronic locking devices and mechanical lock bodies, which need to be installed in different positions on the car door. They are connected by long-distance wiring harnesses and fixed by additional brackets. This not only results in a loose structure, but also occupies a large amount of space in the depth of the car door. It is easy to cause layout conflicts with high-voltage wiring harnesses, audio modules and other components in the new energy vehicle door. Moreover, the electronic and mechanical parts need to be debugged and troubleshooted separately, which is cumbersome and inefficient. In addition, traditional lock bodies can only meet the basic door opening and closing requirements and cannot integrate multi-mode unlocking functions in a limited space. Facing the space differences of different models and the intelligent entry requirements of new energy vehicles, they need to be significantly modified to adapt, resulting in poor compatibility and flexibility. Therefore, this invention provides a new energy electric vehicle M8 silent door lock. Summary of the Invention

[0004] One objective of this invention is to provide a silent door lock for the M8 electric vehicle.

[0005] According to an embodiment of the present invention, a silent door lock for a new energy electric vehicle M8 includes an integrated door lock assembly. The door lock assembly integrates an electronically controlled locking device assembly, a multi-mode transmission assembly, a ratchet locking assembly, and a silent component. The electronically controlled locking device assembly is drivenly connected to the multi-mode transmission assembly, and the multi-mode transmission assembly is linked and cooperates with the ratchet locking assembly. The door lock assembly consists of a bottom housing, a top cover, a motor top cover, and a motor base that are fastened together to form a closed cavity. The electronically controlled locking device, the multi-mode transmission device, the ratchet locking device, and the silent device are all integrated into the closed cavity, and an external protective bracket is fixedly installed on the outer surface of the door lock assembly.

[0006] Furthermore, the electronically controlled locking device assembly includes a motor, a worm gear, a large gear, and a sliding arm. The motor is fixedly installed on the front side of the motor cover, and the worm gear is fixedly installed on the motor drive end. The large gear is rotatably connected to the front side of the motor cover and meshes with the worm gear. The sliding arm is slidably connected to the front side of the motor cover and located behind the large gear. The rear side of the large gear is symmetrically provided with connecting protrusions, and the front side of the sliding arm is provided with connecting grooves that fit the connecting protrusions. A limit hole is provided on the side of the sliding arm near the large gear. A support shaft is rotatably connected to the rear side of the large gear through a bearing, and one end of the support shaft passes through the limit hole and is fixed to the motor cover.

[0007] Furthermore, the multi-mode transmission assembly includes an outward-opening transmission unit, an inward-opening transmission unit, and a lock cylinder transmission unit. The outward-opening transmission unit includes a protruding support column, an outward-opening plate, a transition plate, an opening plate, and a connecting rod. The protruding support column is fixedly installed on the top surface of the upper cover. The outward-opening plate is movably sleeved on the outer surface of the protruding support column. The transition plate is fixedly installed on the top surface of the outward-opening plate. The opening plate is rotatably connected to the top surface of the upper cover, with one end in contact with the ratchet locking assembly and the other end having a limit hole. The connecting rod is slidably connected in the limit hole, and one end of it is in contact with the transition plate. A limit post is fixedly installed on the bottom surface of the sliding arm. A straight groove hole is opened on the top surface of the connecting rod away from the transition plate. The bottom end of the limit post passes through the straight groove hole, and a limit protruding ear plate is symmetrically fixedly installed on the outer surface of its bottom end.

[0008] Furthermore, the outward-opening transmission unit also includes a direct-push small wrench and a small wrench torsion spring. The direct-push small wrench is rotatably connected to the top surface of the upper cover, with one end in contact with the outward-opening plate. The bottom surface of the direct-push small wrench is provided with a small wrench torsion spring. An opening plate torsion spring is provided between the outward-opening plate and the bottom housing. One end of the opening plate torsion spring is fixed to the bottom surface of the outward-opening plate, and the other end is in contact with the inner sidewall of the bottom housing.

[0009] Furthermore, the inner opening transmission unit includes an inner opening plate and an inner opening plate torsion spring. The inner opening plate is rotatably connected to the rear side of the motor cover. The rear side of the motor cover is provided with an inner opening plate torsion spring. One end of the inner opening plate torsion spring is fixed to the motor cover, and the other end is fixed to the inner opening plate. One end of the inner opening plate is in contact with the side of the adapter plate.

[0010] Furthermore, the lock cylinder transmission unit includes a lock cylinder bracket, a transmission connecting rod, and a lock cylinder torsion spring. The lock cylinder bracket is rotatably connected to the top surface of the upper cover, and the transmission connecting rod is fixedly installed on the bottom surface of the sliding arm. One end of the lock cylinder bracket is in contact with the transmission connecting rod, and one end of the lock cylinder torsion spring is fixed to the motor base, while the other end is fixed to the top surface of the lock cylinder bracket.

[0011] Furthermore, the ratchet locking assembly includes a pawl, a ratchet, a first pawl torsion spring, and a second pawl torsion spring. The pawl and ratchet are rotatably connected to the inside of the bottom housing and mesh with each other. One end of the first pawl torsion spring is fixed to the pawl, and the other end is fixed to the inner wall of the bottom housing. One end of the second pawl torsion spring is fixed to the ratchet, and the other end is fixed to the inner wall of the bottom housing. A control wheel rivet is fixedly installed on the top surface of the ratchet. A straight groove limiting hole is opened on the top surface of the upper cover. One end of the control wheel rivet passes through the straight groove limiting hole and contacts the opening piece.

[0012] Furthermore, the noise reduction component includes a first rubber pad, a ratchet buffer pad, and a second rubber pad. The first rubber pad is fixedly installed on the inner wall of the bottom housing. The ratchet buffer pad is disposed on the inner wall of the first rubber pad and located on the side of the ratchet. The second rubber pad is fixedly installed in the middle of the interior of the bottom housing.

[0013] Furthermore, a child lock assembly is provided on the rear side of the motor cover. The child lock assembly includes a child lock bracket, a child lock bracket torsion spring, and a connecting lever. The child lock bracket is rotatably connected to the rear side of the motor cover. The child lock bracket torsion spring is provided on the rear side of the motor cover. One end of the child lock bracket torsion spring is fixed to the motor cover, and the other end is fixed to the child lock bracket. A limit hole is provided on the rear side of the motor cover. The connecting lever is fixedly installed on the rear side of the sliding arm, and one end of it passes through the interior of the limit hole and contacts the child lock bracket.

[0014] Furthermore, the door lock assembly is provided with a pin assembly, which includes a pin with plastic coating and a micro switch. Both the pin with plastic coating and the micro switch are located inside the door lock assembly and are electrically connected to the motor.

[0015] The beneficial effects of this invention are as follows: By integrating the electronically controlled locking device, multi-mode transmission component, ratchet locking component, and silent component into a closed cavity, the space occupied by the door can be significantly reduced, avoiding layout conflicts with other components in the vehicle. Furthermore, by using the linkage between the sliding arm, the adapter plate, and the connecting rod, the transmission link is switched on and off by the linear movement of the sliding arm driven by the motor. The manual unlocking signals of the external handle, the direct push wrench, the internal latch, and the mechanical key are uniformly integrated with the electronically controlled unlocking signals to form a multi-mode unlocking function, which flexibly adapts to the intelligent entry requirements of new energy vehicles.

[0016] The sound-absorbing components, consisting of rubber pads and ratchet buffer pads, absorb vibration and impact energy during the transmission process, reducing door opening and closing noise and improving cabin quietness. The meshing of the pawl and ratchet, along with the reset action of the torsion spring, ensures reliable door locking and smooth unlocking. Meanwhile, the child lock component further enhances safety performance. The micro switch provides real-time feedback on the locking status, ensuring coordinated operation of all four doors. The overall structure is compact and effectively solves the problems of traditional door locks, such as large space occupation, limited functionality, poor adaptability, and noise. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of a silent door lock for an M8 new energy electric vehicle proposed in this invention; Figure 2 This is a schematic diagram of the internal structure of a door lock assembly for a new energy electric vehicle M8 silent door lock proposed in this invention; Figure 3 This is a schematic diagram of the electronically controlled locking device assembly of a silent door lock for a new energy electric vehicle M8, as proposed in this invention. Figure 4 This is a schematic diagram of the internal structure of the bottom shell of a silent door lock for an M8 new energy electric vehicle proposed in this invention; Figure 5 This is a schematic diagram of the external protective bracket structure of the M8 silent door lock for a new energy electric vehicle proposed in this invention; Figure 6 This is a schematic diagram of the rear view of the motor cover structure of a silent door lock for an M8 new energy electric vehicle proposed in this invention. Figure 7 This is a schematic diagram of the rubber pad structure of a silent door lock for an M8 new energy electric vehicle proposed in this invention; Figure 8 This is a schematic diagram of the opening plate structure of a silent door lock for a new energy electric vehicle M8 proposed in this invention; Figure 9 This is a schematic diagram of the adapter plate structure for a silent door lock for an M8 new energy electric vehicle proposed in this invention; Figure 10 This is a schematic diagram of the limiting post structure of a silent door lock for an M8 new energy electric vehicle proposed in this invention; Figure 11 This is a schematic diagram of the sliding arm structure of a silent door lock for an M8 new energy electric vehicle proposed in this invention; Figure 12 This is a schematic diagram of the uninstalled opening plate structure of the M8 silent door lock for a new energy electric vehicle proposed in this invention; Figure 13 This is a schematic diagram of the connecting rod structure of a silent door lock for an M8 new energy electric vehicle proposed in this invention; Figure 14 This is a schematic diagram of the uninstalled connection groove structure of the M8 silent door lock for a new energy electric vehicle proposed in this invention.

[0018] In the diagram: 1. Door lock assembly; 101. Bottom housing; 102. Top cover; 103. Motor top cover; 104. Motor base; 2. Door lock assembly; 201. Protruding support column; 202. Outward opening plate; 203. Adapter plate; 204. Opening plate torsion spring; 205. Opening plate; 206. Limiting hole; 207. Connecting rod; 208. Direct push small wrench; 209. Small wrench torsion spring; 3. Electrically controlled interlocking device assembly; 301. Motor; 302. Worm gear; 303. Large gear; 304. Sliding arm; 305. Limiting post; 306. Straight slot hole; 307. Limiting protruding ear plate; 308. Connecting protrusion; 309. Connecting groove; 4. Ratchet locking assembly; 401. Pawl; 402. Ratchet; 403. Pawl torsion spring one; 404. Pawl torsion spring two; 405. Control wheel rivet; 406. Straight groove limit hole; 5. Noise reduction components; 501. Rubber pad one; 502. Ratchet buffer pad; 503. Rubber pad two; 6. Limiting hole; 7. Support shaft; 8. Internal opening assembly; 801. Internal opening plate; 802. Internal opening plate torsion spring; 9. Child lock assembly; 901. Child lock bracket; 902. Child lock bracket torsion spring; 903. Limiting hole; 904. Connecting lever; 10. Pin assembly; 1001. Pin plastic coating; 1002. Micro switch; 11. External protective bracket; 12. Lock cylinder bracket; 13. Transmission connecting rod; 14. Lock cylinder torsion spring. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0020] refer to Figures 1-14As shown, a silent door lock for an M8 new energy electric vehicle includes an integrated door lock assembly 1. The door lock assembly 1 integrates an electronically controlled locking device 3, a multi-mode transmission component, a ratchet locking component 4, and a silent component 5. The electronically controlled locking device 3 is driven and connected to the multi-mode transmission component, and the multi-mode transmission component is linked and cooperates with the ratchet locking component 4. The door lock assembly 1 is formed by a bottom shell 101, a top cover 102, a motor top cover 103, and a motor base 104 fastened together to form a closed cavity. The electronically controlled locking device 3, the multi-mode transmission component, the ratchet locking component 4, and the silent component 5 are all integrated into the closed cavity, and an external protective bracket 11 is fixedly installed on the outer surface of the door lock assembly 1. Through the integrated design, the core components can be integrated into the closed cavity, which can significantly reduce the space occupied inside the door. The external protective bracket 11 can improve the overall strength of the lock body and avoid layout conflicts with the high-voltage wiring harness, audio module, etc. inside the door.

[0021] refer to Figures 1-14 As shown, the electronically controlled locking device assembly 3 includes a motor 301, a worm gear 302, a large gear 303, and a sliding arm 304. The motor 301 is fixedly mounted on the front side of the motor cover 103. The worm gear 302 is fixedly mounted on the drive end of the motor 301. The large gear 303 is rotatably connected to the front side of the motor cover 103 and meshes with the worm gear 302. The door lock assembly 1 has a pin assembly 10 inside. The pin assembly 10 includes a pin with plastic coating 101 and a micro switch 102. Both the pin with plastic coating 101 and the micro switch 102 are located inside the door lock assembly 1. Both the plastic-coated pin 101 and the micro switch 102 are electrically connected to the motor 301. The motor 301, worm gear 302, and large gear 303 form a high-efficiency reduction drive mechanism, which can increase torque while reducing operating noise. The plastic-coated pin 101 enables a fast and reliable connection with the vehicle's electronic control system. The micro switch 102 provides real-time feedback on the lock body status, ensuring the accuracy of the four-door linkage. The three components are electrically connected to form a closed-loop control, improving the response speed and reliability of electronic unlocking and locking.

[0022] refer to Figures 1-14 As shown, the sliding arm 304 is slidably connected to the front side of the motor cover 103 and located behind the large gear 303. The large gear 303 has symmetrically arranged connecting protrusions 308 on its rear side. The sliding arm 304 has a connecting groove 309 adapted to the connecting protrusions 308 on its front side. The sliding arm 304 has a limiting hole 6 on the side near the large gear 303. The large gear 303 has a support shaft 7 rotatably connected to its rear side via a bearing. One end of the support shaft 7 passes through the limiting hole 6 and is fixed to the motor cover 103. By matching the connecting protrusions 308 and the connecting groove 309, stable transmission between the large gear 303 and the sliding arm 304 can be achieved. By matching the support shaft 7 with the limiting hole 6, the movement trajectory of the sliding arm 304 is restricted, thus avoiding deviation and jamming, and ensuring that the electric drive is transmitted to the subsequent transmission components.

[0023] refer to Figures 1-14 As shown, the multi-mode transmission assembly includes an outward-opening transmission unit, an inward-opening transmission unit, and a lock cylinder transmission unit. The outward-opening transmission unit includes a protruding support column 201, an outward-opening plate 202, an adapter plate 203, an opening plate 205, and a connecting rod 207. The protruding support column 201 is fixedly installed on the top surface of the upper cover 102. The outward-opening plate 202 is movably sleeved on the outer surface of the protruding support column 201. The adapter plate 203 is fixedly installed on the top surface of the outward-opening plate 202. The opening plate 205 is rotatably connected to the top surface of the upper cover 102, with one end in contact with the ratchet locking assembly 4 and the other end having a limiting hole 206. The connecting rod 207 is slidably connected within the limiting hole 206, and one end of it is in contact with the adapter plate 203. A limiting post 305 is fixedly installed on the bottom surface of the sliding arm 304. A straight slot 306 is provided on the top surface of the end of the connecting rod 207 away from the adapter plate 203. The bottom end of the limiting post 305 passes through the straight slot 306, and a limiting protruding ear plate 307 is symmetrically fixedly installed on the outer surface of its bottom end. Through the integration of the multi-mode transmission components, three unlocking paths are provided to meet the needs of different usage scenarios. The outer opening plate 202 can be connected to an external handle. The protruding support column 201 facilitates the stable installation of the outer opening plate 202 and the adapter plate 203. The sliding cooperation between the limiting hole 206 and the connecting rod 207, and between the straight slot 306 and the limiting post 305, enables flexible power transmission. The limiting protruding ear plate 307 prevents the connecting rod 207 from falling off, ensuring the reliability of the transmission link.

[0024] refer to Figures 1-14 As shown, the outward-opening transmission unit also includes a direct-push small wrench 208 and a small wrench torsion spring 209. The direct-push small wrench 208 is rotatably connected to the top surface of the upper cover 102, with one end in contact with the outward-opening plate 202. The bottom surface of the direct-push small wrench 208 is provided with a small wrench torsion spring 209. An opening plate torsion spring 204 is provided between the outward-opening plate 202 and the bottom housing 101. One end of the opening plate torsion spring 204 is fixed to the bottom surface of the outward-opening plate 202, and the other end is in contact with the inner sidewall of the bottom housing 101. The inward-opening transmission unit includes an inward-opening plate 801 and an inward-opening plate torsion spring 802. The inward-opening plate 801 is rotatably connected to the rear side of the motor upper cover 103. The rear side of the motor upper cover 103 is provided with an inward-opening plate torsion spring 802. The inner opening torsion spring 802 has one end fixed to the motor cover 103 and the other end fixed to the inner opening plate 801. One end of the inner opening plate 801 contacts the side of the adapter plate 203. The push-to-unlock small wrench 208 can be used to push and unlock. The push-to-unlock small wrench 208 can be used to press and unlock. The torsion spring 209 and the opening plate torsion spring 204 can ensure that the components quickly reset after action to avoid jamming. The contact between the inner opening plate 801 and the adapter plate 203 can realize efficient transmission of the inner opening action. At the same time, the inner opening plate torsion spring 802 can ensure the initial position of the inner opening plate 801.

[0025] refer to Figures 1-14 As shown, the lock cylinder transmission unit includes a lock cylinder bracket 12, a transmission connecting rod 13, and a lock cylinder torsion spring 14. The lock cylinder bracket 12 is rotatably connected to the top surface of the upper cover 102, and the transmission connecting rod 13 is fixedly installed on the bottom surface of the sliding arm 304. One end of the lock cylinder bracket 12 is in contact with the transmission connecting rod 13, and one end of the lock cylinder torsion spring 14 is fixed to the motor base 104, while the other end is fixed to the top surface of the lock cylinder bracket 12. By cooperating with the transmission connecting rod 13, the power connection between mechanical key unlocking and electronic unlocking can be realized. Furthermore, the lock cylinder torsion spring 14 can ensure that the lock cylinder bracket 12 resets after its action. This ensures that mechanical unlocking and electronic unlocking do not interfere with each other, and improves the compatibility of the lock body with different unlocking methods.

[0026] refer to Figures 1-14 As shown, the ratchet locking assembly 4 includes a pawl 401, a ratchet 402, a first pawl torsion spring 403, and a second pawl torsion spring 404. The pawl 401 and ratchet 402 are rotatably connected to the inside of the bottom housing 101 and mesh with each other. One end of the first pawl torsion spring 403 is fixed to the pawl 401, and the other end is fixed to the inner wall of the bottom housing 101. One end of the second pawl torsion spring 404 is fixed to the ratchet 402, and the other end is fixed to the inner wall of the bottom housing 101. A control wheel rivet 405 is fixedly installed on the top surface of the ratchet 402. A straight groove limiting hole 40 is provided on the top surface of the upper cover 102. 6. One end of the control wheel rivet 405 passes through the straight groove limiting hole 406 and contacts the opening piece 205; the engagement of the pawl 401 and the ratchet 402 is the core of locking and unlocking. The pawl torsion spring 1 403 and the pawl torsion spring 2 404 can respectively ensure the accuracy of their reset, ensuring reliable locking and smooth unlocking. The cooperation between the control wheel rivet 405 and the opening piece 205 can realize the centralized transmission of multi-mode transmission signals to the locking core. The straight groove limiting hole 406 can limit the rotation stroke of the ratchet 402.

[0027] refer to Figures 1-14 As shown, the noise reduction component 5 includes a first rubber pad 501, a ratchet buffer pad 502, and a second rubber pad 503. The first rubber pad 501 is fixedly installed on the inner wall of the bottom housing 101. The ratchet buffer pad 502 is located on the inner wall of the first rubber pad 501 and on the side of the ratchet 402. The second rubber pad 503 is fixedly installed in the middle of the bottom housing 101. By blocking the ratchet 401 and the second rubber pad 503, the vibration inside the lock body can be transmitted to the door sheet metal, avoiding resonance noise. By absorbing the impact energy when the pawl 401 and the ratchet 402 are engaged, the metal collision noise can be reduced, which can significantly reduce the noise during the opening and closing of the door.

[0028] refer to Figures 1-14As shown, a child lock assembly 9 is provided on the rear side of the motor cover 103. The child lock assembly 9 includes a child lock bracket 901, a child lock bracket torsion spring 902, and a connecting lever 904. The child lock bracket 901 is rotatably connected to the rear side of the motor cover 103. The child lock bracket torsion spring 902 is provided on the rear side of the motor cover 103. One end of the child lock bracket torsion spring 902 is fixed to the motor cover 103, and the other end is fixed to the child lock bracket 901. A limit hole 903 is provided on the rear side of the motor cover 103 for connecting... The toggle lever 904 is fixedly installed on the rear side of the sliding arm 304, with one end passing through the interior of the limiting hole 903 and contacting the child lock bracket 901. The child lock assembly 9 enables child safety protection. By connecting the toggle lever 904 and the child lock bracket 901, the movement of the sliding arm 304 controls the child lock switch. The torsion spring 902 of the child lock bracket ensures the stability of the child lock. The limiting hole 903 restricts the range of motion of the connecting toggle lever 904 to prevent accidental triggering.

[0029] Working principle: During normal use, when the vehicle receives locking signals from the remote key, in-car buttons, etc., the pin 101 transmits a signal to the motor 301. The motor 301 starts and drives the large gear 303 to rotate via the worm gear 302 at the drive end. At this time, the large gear 303 engages with the connecting groove 309 of the sliding arm 304 through the rear connecting protrusion 308, driving the sliding arm 304 to slide away from the adapter piece 203. When the sliding arm 304 moves, the limiting post 305 on the bottom surface can drive the connecting rod 207 away from the adapter piece 203. At this time, the connecting rod 207 and the adapter piece 203 are completely disengaged. Even if a person pulls the door handle to rotate the outer opening piece 202, or presses the small door handle, the door will still be locked. When the wrench 208 triggers the adapter plate 203, the adapter plate 203 cannot be linked with the connecting rod 207 when it rotates. At this time, the opening plate 205 cannot be driven, and the ratchet 402 remains stationary. Under the action of the first pawl torsion spring 403 and the second pawl torsion spring 404, the pawl 401 and the ratchet 402 are always precisely engaged, and the door cannot be opened, thus achieving reliable locking. At the same time, the connecting lever 904 in the child lock assembly 9 moves synchronously with the sliding arm 304, triggering the child lock bracket 901 to maintain a safe locking state. The rubber pads 501 and 503 of the noise reduction assembly 5 and the ratchet buffer pad 502 absorb the vibration and impact energy generated by the motor operation and component movement throughout the process, greatly reducing the noise during the locking process.

[0030] When the vehicle receives unlocking signals from the remote key, in-vehicle buttons, etc., the motor 301 starts in reverse, driving the sliding arm 304 to slide closer to the adapter plate 203 via the worm gear 302 and the large gear 303. At this time, as the sliding arm 304 moves, the limiting post 305 acts as a pivot, causing one end of the connecting rod 207 to engage with the adapter plate 203, thus connecting the transmission link. Then, a person can pull the outer opening plate 202 to rotate or press the push-pull wrench 208 to trigger the adapter plate 203, causing the outer opening plate 202 and adapter plate 203 to rotate synchronously. The adapter plate 203 pushes the connecting rod 207, driving the opening plate 205 to rotate with the limiting post 305 as the pivot. When a person triggers the inner opening plate 801 to rotate, the inner opening... The plate 801 pushes the adapter plate 203 to rotate, which in turn drives the opening plate 205 to rotate through the connecting rod 207. When the person drives the lock cylinder bracket 12 to rotate, the lock cylinder bracket 12 pushes the sliding arm 304 to stay close to the adapter plate 203 through the transmission connecting rod 13. At the same time, the adapter plate 203 is linked, which finally drives the opening plate 205 to rotate. After the opening plate 205 rotates, it will push the control wheel rivet 405, so that the ratchet 402 overcomes the elastic force of the pawl torsion spring 404 and rotates. The pawl 401 is disengaged under the drive of the ratchet 402, and the door is unlocked. The micro switch 102 provides real-time feedback on the unlocking status to ensure the coordinated linkage of the four doors. The noise reduction component 5 can continuously absorb the noise of the action to ensure a smooth and quiet unlocking process. The device uses a reduction mechanism consisting of a worm gear 302 and a large gear 303 to convert the rotational power of the motor 301 into the linear motion of the sliding arm 304, thus switching the transmission link on and off. The multi-mode transmission component acts as a signal hub, and through the position switching of the sliding arm 304, it unifies the manual signals of the external pull handle, push handle, internal latch handle, and mechanical key, as well as the electric signals of the electronic unlocking, into the linkage action of the adapter plate 203, connecting rod 207, and opening plate 205. The limit post 305 acts as a pivot, ensuring the rotation trajectory of the connecting rod 207 and preventing deviation and jamming. The ratchet locking component 4 acts as the execution core, and through the engagement and disengagement of the pawl 401 and the ratchet 402, it completes the switching of the door lock's locking and unlocking states. The whole device achieves the effects of multi-mode unlocking, reliable locking, and silent operation in a compact space through an integrated design.

[0031] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A silent door lock for an M8 new energy electric vehicle, characterized in that: The lock assembly includes an integrated door lock assembly (1), which integrates an electric locking device assembly (3), a multi-mode transmission assembly, a ratchet locking assembly (4) and a silent assembly (5). The electric locking device assembly (3) is driven to connect with the multi-mode transmission assembly, and the multi-mode transmission assembly is linked to the ratchet locking assembly (4). The door lock assembly (1) is formed by fastening together a bottom housing (101), a top cover (102), a motor top cover (103), and a motor base (104) to form a closed cavity. The electronically controlled locking device assembly (3), the multi-mode transmission assembly, the ratchet locking assembly (4), and the silent assembly (5) are all integrated into the closed cavity, and an external protective bracket (11) is fixedly installed on the outer surface of the door lock assembly (1).

2. The M8 silent door lock for a new energy electric vehicle according to claim 1, characterized in that: The electrically controlled interlocking device assembly (3) includes a motor (301), a worm gear (302), a large gear (303), and a sliding arm (304). The motor (301) is fixedly installed on the front side of the motor cover (103). The worm gear (302) is fixedly installed on the drive end of the motor (301). The large gear (303) is rotatably connected to the front side of the motor cover (103) and meshes with the worm gear (302). The sliding arm (304) is slidably connected to the front side of the motor cover (103) and located at... Behind the large gear (303), there are symmetrical connecting protrusions (308) on the rear side of the large gear (303). The front side of the sliding arm (304) is provided with a connecting groove (309) that matches the connecting protrusion (308). The sliding arm (304) is provided with a limiting hole (6) on the side near the large gear (303). The rear side of the large gear (303) is rotatably connected to a support shaft (7) through a bearing. One end of the support shaft (7) passes through the limiting hole (6) and is fixed to the motor cover (103).

3. The M8 silent door lock for a new energy electric vehicle according to claim 2, characterized in that: The multi-mode transmission assembly includes an outward-opening transmission unit, an inward-opening transmission unit, and a lock cylinder transmission unit. The outward-opening transmission unit includes a protruding support column (201), an outward-opening piece (202), a connecting piece (203), an opening piece (205), and a connecting rod (207). The protruding support column (201) is fixedly installed on the top surface of the upper cover (102). The outward-opening piece (202) is movably sleeved on the outer surface of the protruding support column (201). The connecting piece (203) is fixedly installed on the top surface of the outward-opening piece (202). The opening piece (205) is rotatably connected to the upper cover (102). The top surface of 102) has one end in contact with the ratchet locking assembly (4) and the other end has a limiting hole (206). The connecting rod (207) is slidably connected in the limiting hole (206) and one end is in contact with the adapter plate (203). The bottom surface of the sliding arm (304) is fixedly installed with a limiting post (305). The top surface of the connecting rod (207) away from the adapter plate (203) has a straight groove hole (306). The bottom end of the limiting post (305) passes through the straight groove hole (306) and the outer surface of its bottom end is symmetrically fixedly installed with a limiting protruding ear plate (307).

4. The M8 silent door lock for a new energy electric vehicle according to claim 3, characterized in that, The outward-opening transmission unit also includes a direct-push small wrench (208) and a small wrench torsion spring (209). The direct-push small wrench (208) is rotatably connected to the top surface of the upper cover (102), and one end of it is in contact with the outward-opening plate (202). The bottom surface of the direct-push small wrench (208) is provided with a small wrench torsion spring (209). An opening plate torsion spring (204) is provided between the outward-opening plate (202) and the bottom housing (101). One end of the opening plate torsion spring (204) is fixed to the bottom surface of the outward-opening plate (202), and the other end is in contact with the inner wall of the bottom housing (101).

5. A silent door lock for a new energy electric vehicle M8 according to claims 1 and 3, characterized in that, The inner opening transmission unit includes an inner opening plate (801) and an inner opening plate torsion spring (802). The inner opening plate (801) is rotatably connected to the rear side of the motor cover (103). The inner opening plate torsion spring (802) is provided on the rear side of the motor cover (103). One end of the inner opening plate torsion spring (802) is fixed to the motor cover (103), and the other end is fixed to the inner opening plate (801). One end of the inner opening plate (801) is in contact with the side of the adapter plate (203).

6. The M8 silent door lock for a new energy electric vehicle according to claim 5, characterized in that, The lock cylinder transmission unit includes a lock cylinder bracket (12), a transmission connecting rod (13), and a lock cylinder torsion spring (14). The lock cylinder bracket (12) is rotatably connected to the top surface of the upper cover (102). The transmission connecting rod (13) is fixedly installed on the bottom surface of the sliding arm (304). One end of the lock cylinder bracket (12) is in contact with the transmission connecting rod (13). One end of the lock cylinder torsion spring (14) is fixed to the motor base (104), and the other end is fixed to the top surface of the lock cylinder bracket (12).

7. The M8 silent door lock for a new energy electric vehicle according to claims 1 and 3, characterized in that: The ratchet locking assembly (4) includes a pawl (401), a ratchet (402), a pawl torsion spring one (403), and a pawl torsion spring two (404). The pawl (401) and the ratchet (402) are rotatably connected to the inside of the bottom housing (101) and mesh with each other. One end of the pawl torsion spring one (403) is fixed to the pawl (401), and the other end is fixed to the inner wall of the bottom housing (101). One end of the pawl torsion spring two (404) is fixed to the ratchet (402), and the other end is fixed to the inner wall of the bottom housing (101). A control wheel rivet (405) is fixedly installed on the top surface of the ratchet (402). A straight groove limiting hole (406) is opened on the top surface of the top cover (102). One end of the control wheel rivet (405) passes through the straight groove limiting hole (406) and contacts the opening piece (205).

8. The M8 silent door lock for a new energy electric vehicle according to claims 1 and 4, characterized in that: The noise reduction component (5) includes a rubber pad one (501), a ratchet buffer pad (502) and a rubber pad two (503). The rubber pad one (501) is fixedly installed on the inner wall of the bottom housing (101). The ratchet buffer pad (502) is disposed on the inner wall of the rubber pad one (501) and located on the side of the ratchet (402). The rubber pad two (503) is fixedly installed in the middle of the bottom housing (101).

9. A silent door lock for a new energy electric vehicle M8 according to claims 1 and 2, characterized in that: The motor cover (103) is provided with a child lock assembly (9) on the rear side. The child lock assembly (9) includes a child lock bracket (901), a child lock bracket torsion spring (902), and a connecting lever (904). The child lock bracket (901) is rotatably connected to the rear side of the motor cover (103). The motor cover (103) is provided with a child lock bracket torsion spring (902) on the rear side. One end of the child lock bracket torsion spring (902) is fixed to the motor cover (103), and the other end is fixed to the child lock bracket (901). The motor cover (103) has a limit hole (903) on the rear side. The connecting lever (904) is fixedly installed on the rear side of the sliding arm (304), and one end of it passes through the interior of the limit hole (903) and contacts the child lock bracket (901).

10. A silent door lock for a new energy electric vehicle M8 according to claim 2, characterized in that: The door lock assembly (1) is provided with a pin assembly (10) inside. The pin assembly (10) includes a pin plastic coating (101) and a micro switch (102). The pin plastic coating (101) and the micro switch (102) are both located inside the door lock assembly (1). The pin plastic coating (101) and the micro switch (102) are both electrically connected to the motor (301).

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