Back door lock device and vehicle

Abstract

The application discloses a back door lock device and a vehicle. The back door lock device comprises a lock catch, which is adapted to be mounted on a vehicle body and provided with a first locking part; a lock body assembly, which comprises a shell adapted to be mounted on a back door; a lock piece, which is rotatably arranged in the shell and provided with a second locking part; and a lock jaw, which is rotatably arranged in the shell and selectively abuts against the lock piece to make the first locking part and the second locking part selectively lock. Thus, when the back door lock device is locked, the first rotary spring is compressed, the lock jaw tightly pushes the lock piece, the first locking part and the second locking part are locked, when the lock jaw is rotated, the lock jaw no longer tightly pushes the lock piece, the lock piece is quickly rotated under the action of the first rotary spring, and the second locking part is unlocked from the first locking part, so that the structure of the back door lock device can be simplified, and the operation reliability of the back door lock device can be realized.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a tailgate lock device and a vehicle. Background Technology

[0002] Car door locks are an important component of a car, ensuring the vehicle's safety and reliability.

[0003] Most tailgate locks on the market today have complex structures, and there is a certain risk of accidental unlocking after locking. They cannot achieve reliable locking and quick unlocking while simplifying the structure. In addition, the locks do not have emergency unlocking devices, so they cannot guarantee that the vehicle can be unlocked from the inside in the event of an emergency. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a rear door lock device, which has a simple structure and reliable locking.

[0005] The present invention further proposes a vehicle.

[0006] According to an embodiment of the present invention, a tailgate lock device includes: a latch, the latch being adapted to be mounted on a vehicle body and having a first locking portion; a lock body assembly, the lock body assembly including: a housing, the housing being adapted to be mounted on a tailgate; a lock plate, the lock plate being rotatably disposed within the housing and having a second locking portion; a first rotary spring, one end of the first rotary spring being connected to the housing and the other end being connected to the lock plate; and a lock claw, the lock claw being rotatably disposed within the housing and selectively abutting and limiting the lock plate, so that the first locking portion and the second locking portion selectively lock into engagement.

[0007] Therefore, when the rear door lock device is locked, the first rotary spring is compressed, and the locking claws press against the locking plate to ensure that the second locking part of the locking plate and the first locking part of the latch are reliably locked. When the rear door lock device is unlocked, the locking claws rotate, and their pressing force on the locking plate disappears. The locking plate can rotate quickly under the action of the first rotary spring to unlock the second locking part from the first locking part. This not only simplifies the structure of the rear door lock device but also ensures the operational reliability of the rear door lock device.

[0008] According to some embodiments of the present invention, one of the first locking part and the second locking part is a locking groove and the other is a locking post, wherein the locking groove and the locking post are selectively locked together.

[0009] According to some embodiments of the present invention, the rear door lock device further includes a first rotating shaft, the first rotating shaft passing through the outer shell and the lock plate, the lock plate being rotatable relative to the first rotating shaft, and a first rotary spring being sleeved on the first rotating shaft with its two ends respectively connected to the lock plate and the outer shell.

[0010] According to some embodiments of the present invention, the locking claw is provided with a first abutting limiting step, and the locking plate is provided with a second abutting limiting step, wherein the first abutting limiting step and the second abutting limiting step selectively abut and limit each other.

[0011] According to some embodiments of the present invention, there are two second abutment limiting steps, which are spaced apart in the circumferential direction of the locking piece. When the first locking part and the second locking part are locked together, the first abutment limiting step selectively abuts and limits one of the two second abutment limiting steps; when the first locking part and the second locking part are disengaged, the first abutment limiting step selectively abuts and limits the other of the two second abutment limiting steps.

[0012] According to some embodiments of the present invention, the rear door lock device further includes a return spring disposed between the lock claw and the housing.

[0013] According to some embodiments of the present invention, the rear door lock device further includes a drive member, which is pulsatorically connected to the lock claw member.

[0014] According to some embodiments of the present invention, the rear door lock device further includes an adjusting member, which is disposed inside the housing and selectively engages with the driving member. The adjusting member is located above the locking claw and is coaxially arranged with the locking claw. A limiting engagement portion is provided on one side of the locking claw so that when the driving member drives the adjusting member to rotate in a preset direction, it drives the locking claw to rotate synchronously.

[0015] According to some embodiments of the present invention, the adjusting member is provided with a guide groove, and the locking piece is provided with a guide protrusion, the guide protrusion being slidably guided and engaged with the guide groove.

[0016] According to some embodiments of the present invention, the rear door lock device further includes a second rotary spring, which is disposed inside the housing, with one end of the second rotary spring connected to the housing and the other end connected to the adjusting member.

[0017] According to some embodiments of the present invention, the rear door lock device further includes a second rotating shaft, through which the outer shell, the adjusting member and the locking claw are sequentially passed. The adjusting member and the locking claw are both rotatable relative to the second rotating shaft. The second rotary spring is sleeved on the second rotating shaft and its two ends are respectively connected to the adjusting member and the outer shell.

[0018] According to some embodiments of the present invention, the rear door lock device further includes a transmission component, the driving component is a drive motor, the drive component and the transmission component are both disposed within the housing, a first transmission gear is disposed on the power output shaft of the drive motor, the transmission component is a worm gear, a second transmission gear is disposed at one end of the worm gear, the first transmission gear and the second transmission gear mesh with each other, and the worm gear is in transmission cooperation with the adjusting component.

[0019] According to some embodiments of the present invention, the worm gear is provided with helical teeth, and the adjusting member is provided with a rotating engagement protrusion, wherein the helical teeth and the rotating engagement protrusion are in a transmission engagement.

[0020] According to some embodiments of the present invention, the projection of the helical teeth in the axial direction of the worm gear has a gap notch.

[0021] According to some embodiments of the present invention, the rear door lock device further includes a pressure rod, and the circumferential portion of the worm gear is provided with a one-way rotation limiting part, the one-way rotation limiting part is spaced apart from the helical teeth, and the pressure rod and the one-way rotation limiting part are engaged in a limiting fit with the circumferential portion of the worm gear.

[0022] According to some embodiments of the present invention, the driving member is an emergency handle, one end of the emergency handle is connected to the locking claw member, and the other end of the emergency handle is adapted to be installed inside the vehicle.

[0023] According to some embodiments of the present invention, a sensor is further provided inside the housing, the sensor selectively abutting against the locking claw, and the sensor is adapted to be connected to the vehicle's central control system.

[0024] The vehicle according to the present invention includes the rear door lock device described above.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is an exploded view of the rear door lock device according to an embodiment of the present invention; Figure 2 This is a partial view of the rear door lock device unlocking according to an embodiment of the present invention; Figure 3 This is a perspective view of the rear door lock device when unlocked according to an embodiment of the present invention; Figure 4 This is a perspective view of the rear door lock device when locked according to an embodiment of the present invention; Figure 5 This is a partial cross-sectional view of the rear door lock device according to an embodiment of the present invention; Figure 6 This is a partial cross-sectional view of the rear door lock device according to an embodiment of the present invention from another perspective; Figure 7 This is a partial cross-sectional view of the rear door lock device according to an embodiment of the present invention from another perspective; Figure 8 This is a partial schematic diagram of the rear door lock device according to an embodiment of the present invention; Figure 9 This is a partial schematic diagram from another perspective of the rear door lock device according to an embodiment of the present invention; Figure 10 This is an exploded view of the casing and electrical component connector according to an embodiment of the present invention; Figure 11 This is a partial cross-sectional view of the rear door lock device according to an embodiment of the present invention; Figure 12 This is a schematic diagram of a transmission component, helical teeth, and a first transmission gear according to an embodiment of the present invention; Figure 13 This is a schematic diagram of the locking plate and locking claw members at the secondary engagement point according to an embodiment of the present invention; Figure 14 This is a schematic diagram of the locking plate and locking claw members at the primary engagement point according to an embodiment of the present invention; Figure 15 This is a schematic diagram of a door lock emergency switch mechanism according to an embodiment of the present invention; Figure 16 This is a partial schematic diagram of the rear door lock device according to an embodiment of the present invention; Figure 17 This is a schematic diagram of an adjusting member according to an embodiment of the present invention.

[0027] Figure label: 100. Rear door lock device; 1. Locking element; 101. First locking part; 102. First mounting hole; 2. Lock body assembly; 201. Outer shell; 2011. Bottom shell; 20111. Second mounting hole; 2012. Upper shell; 20121. Groove; 20122. Snap-fit ​​interface; 20123. Second positioning mounting post; 202. Locking plate; 2021. Second locking part; 2022. Second abutting and limiting step; 2023. Guide protrusion; 203. First rotary spring; 204. Locking claw; 2041. First abutting and limiting step; 2042. Limiting mating part; 3. First rotating shaft; 4. Return spring; 5. Driving component; 6. Adjusting component; 601. Guide groove; 602. Rotating fit protrusion; 7. Second rotary spring; 8. Second rotating shaft; 9. Transmission component; 901. Second transmission gear; 902. Helical gear; 9021. Clearance notch; 903. One-way rotation limiting part; 10. Compression rod; 1001. Compression rod spring; 11. Drive motor; 1101. First transmission gear; 12. Sensors; 15. Door lock emergency switch mechanism; 1502. Pull cable clip connector; 1503. Emergency pull cable; 1504. Cable protection clip; 15041. Claw; 15042. Through hole; 1505. Handle end clip connector; 1506. Emergency handle; 1507. Emergency handle mounting plate; 16. Electrical component connector; 1601. Wire harness connector; 1602. First latch; 1603. First positioning mounting post; 1604. Second latch; 17. Electrode plates. Detailed Implementation

[0028] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0029] The following is for reference. Figures 1-15 A tailgate lock device 100 according to an embodiment of the present invention is described. The tailgate lock device 100 of the present invention can be applied to a vehicle.

[0030] Combination Figure 1 As shown, the rear door lock device 100 according to an embodiment of the present invention may mainly include: a lock buckle 1 and a lock body assembly 2, wherein the lock body assembly 2 includes a housing 201, a lock plate 202, a first rotary spring 203 and a lock claw 204.

[0031] Specifically, the fastener 1 has first mounting holes 102 on both sides, which are suitable for screwing and fixing to the vehicle body so that the fastener 1 is installed on the vehicle body, and the fastener 1 has a first locking part 101.

[0032] Furthermore, the outer casing 201 includes a bottom casing 2011 and an upper casing 2012. The bottom casing 2011 has second mounting holes 20111 on both sides. The second mounting holes 20111 are adapted to be screwed and fixed to the sheet metal of the rear door so that the lock body assembly 2 can be installed on the rear door.

[0033] Furthermore, the locking plate 202 is rotatably disposed within the housing 201 and is provided with a second locking part 2021. The first locking part 101 and the second locking part 2021 selectively engage, thereby allowing the lock body assembly 2 and the latch 1 to selectively engage. When the lock body assembly 2 and the latch 1 are locked, the vehicle's tailgate can be closed, providing protection for people and items inside the vehicle. When the lock body assembly 2 and the latch 1 are unlocked, the vehicle's tailgate can be opened, facilitating the retrieval of items from the vehicle, the placement of items inside the vehicle, or the easy entry and exit of passengers.

[0034] Furthermore, one end of the first rotary spring 203 is connected to the upper housing 2012, and the other end is connected to the locking plate 202. Thus, when an external force is applied to the locking plate 202 to make it rotate, the locking plate 202 can compress the first rotary spring 203, converting kinetic energy into elastic potential energy within the first rotary spring 203. When the external force applied to the locking plate 202 disappears, the first rotary spring 203 is no longer compressed, and under the action of its own internal elastic potential energy, it can drive the locking plate 202 to rotate rapidly. In an embodiment of the present invention, the direction in which the first rotary spring 203 drives the locking plate 202 to rotate is... Figure 3 The clockwise direction in the middle.

[0035] Furthermore, the locking claw 204 is rotatably disposed within the housing 201 and selectively abuts against and limits the locking plate 202. Thus, when the locking claw 204 is rotated to abut and limit the locking plate 202, the locking plate 202 can be pressed against it, ensuring the locking reliability of the second locking part 2021 and the first locking part 101. Furthermore, by rotating the locking claw 204 until it no longer presses against the locking plate 202, the locking plate 202 can be rotated under the drive of the first rotary spring 203, thereby unlocking the first locking part 101 and the second locking part 2021.

[0036] Therefore, in the embodiments of the present invention, when the rear door lock device 100 is locked, the first rotary spring 203 is compressed, and the lock claw 204 presses against the lock plate 202, so that the second locking part 2021 of the lock plate 202 and the first locking part 101 of the latch 1 are reliably locked. When the rear door lock device 100 is unlocked, after the lock claw 204 rotates, its pressing force on the lock plate 202 disappears, and the lock plate 202 can rotate quickly under the action of the first rotary spring 203, so that the second locking part 2021 is unlocked from the first locking part 101. This not only simplifies the structure of the rear door lock device 100, but also ensures the operational reliability of the rear door lock device 100.

[0037] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 13 and Figure 14 As shown, one of the first locking part 101 and the second locking part 2021 is a locking groove, and the other is a locking pin. The locking groove and the locking pin selectively engage. Specifically, the selective engagement of the first locking part 101 and the second locking part 2021 is actually the selective engagement of the locking groove and the locking pin.

[0038] When the locking plate 202 rotates, one of the locking groove and the locking pin rotates synchronously. When the locking pin disengages from the locking groove, the first locking part 101 and the second locking part 2021 are in the unlocked state, that is, the lock body assembly 2 and the latch 1 are unlocked. When the locking plate 202 rotates until the locking pin enters the locking groove, the first locking part 101 and the second locking part 2021 are in the locked state, that is, the lock body assembly 2 and the latch 1 are locked.

[0039] This design offers several advantages. Firstly, the locking groove and locking pin have a simple structure and reliable locking. Secondly, the locking groove and locking pin are easy to operate when selectively engaging, as they can be achieved simply by rotating the locking plate 202. This ensures reliable engagement between the first locking part 101 and the second locking part 2021, smooth unlocking, and reduces the likelihood of jamming in the rear door lock device 100. This enhances user convenience and improves the user experience.

[0040] Combination Figure 1 , Figure 3 and Figure 4 As shown, the rear door lock device 100 also includes a first rotating shaft 3, through which the upper housing 2012 and the lock plate 202 pass. The lock plate 202 is rotatable relative to the first rotating shaft 3. A first rotary spring 203 is sleeved on the first rotating shaft 3, and its two ends are respectively connected to the lock plate 202 and the housing 201.

[0041] Specifically, the first rotating shaft 3 can make the locking plate 202 and the first rotary spring 203 coaxially arranged in the lock body assembly 2. One end of the first rotary spring 203 is connected to the outer shell 201 and the other end is connected to the locking plate 202. In this way, during the rotation of the locking plate 202, the first rotary spring 203 can be selectively compressed and released.

[0042] In an embodiment of the present invention, when the locking plate 202 rotates to a state in which the second locking part 2021 locks and the first locking part 101 are engaged, the first rotary spring 203 is in a compressed state, and at this time the elastic potential energy in the first rotary spring 203 is large.

[0043] Combination Figure 13 and Figure 14 As shown, the locking claw 204 is provided with a first abutting and limiting step 2041, and the locking plate 202 is provided with a second abutting and limiting step 2022. The first abutting and limiting step 2041 and the second abutting and limiting step 2022 selectively abut and limit each other.

[0044] Specifically, the locking claw 204 and the locking plate 202 achieve selective abutment and limiting via a first abutment limiting step 2041 and a second abutment limiting step 2022. The first abutment limiting step 2041 is located on the locking claw 204, allowing it to rotate with the locking claw 204 within the housing 201. The second abutment limiting step 2022 is located on the locking plate 202, allowing it to rotate with the locking plate 202 within the housing 201.

[0045] Furthermore, by rotating the locking claw 204 and the locking plate 202, the first abutting limiting step 2041 and the second abutting limiting step 2022 can selectively engage. When the first abutting limiting step 2041 and the second abutting limiting step 2022 are engaged, the locking claw 204 and the locking plate 202 can stop rotating and remain in their current positions. This keeps the positions of the locking claw 204 and the locking plate 202 within the housing 201 constant, thus maintaining a certain state for the rear door lock device 100.

[0046] Combination Figure 13 and Figure 14 As shown, there are two second abutment limiting steps 2022. Both second abutment limiting steps 2022 can cooperate with the first abutment limiting step 2041 to stop the locking plate 202 and the locking claw 204 from rotating. The two second abutment limiting steps 2022 are spaced apart in the circumferential direction of the locking plate 202, so that when the first abutment limiting step 2041 abuts with either of the two second abutment limiting steps 2022, the locking plate 202 can be stopped in different positions.

[0047] In an embodiment of the present invention, the position where one of the two second abutting limiting steps 2022 abuts against the first abutting limiting step 2041 is a primary engagement point, and the position where the other of the two second abutting limiting steps 2022 abuts against the first abutting limiting step 2041 is a secondary engagement point. When the first abutting limiting step 2041 is at the primary engagement point, the first locking part 101 and the second locking part 2021 are in an unlocked state; when the first abutting limiting step 2041 is at the secondary engagement point, the first locking part 101 and the second locking part 2021 are in a locked state.

[0048] In an embodiment of the present invention, the first abutting limiting step 2041 presses against the second abutting limiting step 2022 at both the primary engagement point and the secondary engagement point, so that the pressing force of the locking claw 204 on the locking plate 202 is balanced with the force applied by the first rotary spring 203 on the locking plate 202, thus ensuring the stability of the structure when the locking plate 202 is in different positions.

[0049] Furthermore, when the first locking part 101 and the second locking part 2021 are locked together, the first abutting limit step 2041 selectively abuts and limits one of the two second abutting limit steps 2022. This allows the locking piece 202 to remain in the position when the first locking part 101 and the second locking part 2021 are locked together, ensuring that the locking piece 202 will not continue to rotate, thereby ensuring the locking reliability of the first locking part 101 and the second locking part 2021.

[0050] Furthermore, when the first locking part 101 and the second locking part 2021 need to be unlocked, the first rotary spring 203 drives the locking plate 202 to rotate until the other of the two second abutment limiting steps 2022 on the locking plate 202 abuts and limits with the first abutment limiting step 2041 on the locking claw 204 at the first engagement point. At this time, the locking plate 202 remains in the position where the locking engagement of the first locking part 101 and the second locking part 2021 is released. During this process, the first rotary spring 203 drives the locking plate 202 to rotate clockwise.

[0051] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 and Figure 9As shown, the rear door lock device 100 also includes a return spring 4, which is disposed between the lock claw 204 and the housing 201. Specifically, the return spring 4 is compressible or elongated between the lock claw 204 and the housing 201. When the lock claw 204 rotates within the housing 201 to disengage the first locking part 101 and the second locking part 2021, the return spring 4 is compressed, and the first abutting limiting step 2041 on the lock claw 204 abuts against one of the two second abutting limiting steps 2022 on the lock plate 202 at a primary engagement point. The second abutting limiting step 2022 and the return spring 4 together apply force to the lock claw 204 to keep the lock claw 204 stationary at this position.

[0052] When the locking plate 202 rotates to engage the first locking part 101 and the second locking part 2021, the second abutting limit step 2022 no longer engages with the first abutting limit step 2041. At this time, the locking claw 204 can move along the return spring 4. Figure 3 The locking claw 204 rotates counterclockwise until the first abutting limit step 2041 on the locking claw 204 abuts and engages with the other of the two second abutting limit steps 2022 on the locking plate 202 at the secondary engagement point.

[0053] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the rear door lock device 100 also includes a drive member 5, which is pulsatorically connected to the lock claw member 204. Specifically, in an embodiment of the present invention, when the first abutting limiting step 2041 on the lock claw member 204 abuts against one of the two second abutting limiting steps 2022 on the lock plate member 202 at the secondary engagement point, the second locking portion 2021 on the lock plate member 202 locks against the first locking portion 101 on the latch member 1. If unlocking is required, the lock claw member 204 needs to be rotated until the first abutting limiting step 2041 leaves the secondary engagement point.

[0054] Furthermore, the rear door lock device 100 of this embodiment of the invention is provided with a driving member 5, and the driving member 5 is connected to the lock claw member 204 in a transmission manner, so that the driving member 5 can selectively drive the lock claw member 204.

[0055] When the rear door lock device 100 needs to be unlocked, the drive component 5 can drive the lock claw component 204 along... Figure 3The locking pawl 204 rotates clockwise to disengage the first abutment limiting step 2041 from the secondary engagement point. This causes the force of the first rotary spring 203 on the locking plate 202 and the force of the locking pawl 204 to become unbalanced, thereby causing the locking plate 202 to move along the direction of the first rotary spring 203. Figure 3 Rotate clockwise.

[0056] In an embodiment of the present invention, the locking claw 204 can be driven to rotate by the driving component 5, which is convenient to operate and can realize the quick unlocking of the rear door lock device 100.

[0057] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 8 As shown, the rear door lock device 100 also includes an adjusting member 6. The adjusting member 6 is disposed inside the housing 201 and selectively engages with the driving member 5. The adjusting member 6 is located above the locking claw member 204 and is coaxially disposed with the locking claw member 204. A limiting engagement part 2042 is provided on one side of the locking claw member 204 so that when the driving member 5 drives the adjusting member 6 to rotate in a preset direction, it drives the locking claw member 204 to rotate synchronously.

[0058] Specifically, the adjusting member 6 is disposed above the locking claw member 204 inside the housing 201. The driving member 5 is selectively connected to the adjusting member 6. A limiting engagement part 2042 is provided on one side of the locking claw member 204. The adjusting member 6 selectively contacts the limiting engagement part 2042 of the locking claw member 204.

[0059] The adjusting member 6 and the locking claw member 204 are coaxially arranged, so that the adjusting member 6 and the locking claw member 204 can rotate coaxially within the housing 201, so that the adjusting member 6 can selectively drive the locking claw member 204 to rotate in a preset direction.

[0060] When the driving member 5 drives the adjusting member 6 to rotate, the adjusting member 6 can contact the limiting engagement part 2042 on the locking claw member 204 and drive the locking claw member 204 to rotate synchronously with it. This allows the first abutting limiting step 2041 on the locking claw member 204 to disengage from the secondary engagement point, thereby causing the locking plate member 202 to lose the limiting of the locking claw member 204, and under the action of the first rotary spring 203, it drives the second locking part 2021 to unlock from the first locking part 101.

[0061] It should be noted that the driving component 5 drives the adjusting component 6 to rotate in a preset direction; in reality, the driving component 5 drives the adjusting component 6 along... Figure 3 Rotate clockwise.

[0062] Combination Figure 16 and Figure 17As shown, the adjusting member 6 is provided with a guide groove 601, and the locking piece 202 is provided with a guide protrusion 2023. The guide protrusion 2023 and the guide groove 601 are slidably guided and engaged. Specifically, in an embodiment of the present invention, the side of the adjusting member 6 near the locking piece 202 extends at least partially toward the locking piece 202, and the portion of the adjusting member 6 extending toward the locking piece 202 is provided with a guide groove 601. At least a portion of the locking piece 202 near the adjusting member 6 is provided with a guide protrusion 2023, and the guide groove 601 and the guide protrusion 2023 are slidably engaged.

[0063] Furthermore, the extension direction of the guide protrusion 2023 is consistent with the rotation direction of the locking piece 202. When the guide groove 601 and the guide protrusion 2023 are slidably engaged, the guide protrusion 2023 can guide the rotation of the adjusting member 6, and the guide groove 601 can guide the rotation of the locking piece 202. This arrangement ensures that the adjusting member 6 rotates in a preset direction under the drive of the driving member 5, thus ensuring that the adjusting member 6 drives the locking claw 204 to rotate in a preset direction, thereby causing the second abutment limiting step 2022 and the second locking part 2021 to rotate in a preset direction. On the other hand, it ensures that the locking piece 202 rotates in a preset direction under the action of the first rotary spring 203, thereby causing the first abutment limiting step 2041 to rotate in a preset direction.

[0064] In this way, when the rear door lock device 100 is unlocked, the abutment position of the first abutment limiting step 2041 and the two second limiting steps on the lock claw 204 can be accurately moved from the secondary engagement point to the primary engagement point. This ensures that the second locking part 2021 follows the lock plate 202 to unlock with the first locking part 101 in a preset direction. This ensures that the rear door lock device 100 unlocks according to the preset path, thereby ensuring the accuracy of the rear door lock device 100 when it is locked again. This ensures the operational reliability of the rear door lock device 100.

[0065] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 8As shown, the rear door lock device 100 also includes a second rotary spring 7, which is disposed inside the housing 201. One end of the second rotary spring 7 is connected to the upper housing 2012, and the other end is connected to the adjusting member 6. Specifically, when the driving member 5 drives the adjusting member 6 to rotate in a preset direction, the second rotary spring 7 is compressed. Thus, when the adjusting member 6 disengages from the driving member 5, the adjusting member 6 can rotate in the opposite direction to the preset direction under the action of the second rotary spring 7. At this time, the guide groove 601 on the adjusting member 6 slidably engages with the guide protrusion 2023 on the lock plate 202, and guides the rotation of the adjusting member 6. This allows the adjusting member 6 to reset, ensuring that the rear door lock device 100 can still drive the adjusting member 6 to rotate in the preset direction again when unlocking later.

[0066] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 8 As shown, the rear door lock device 100 also includes a second rotating shaft 8. The second rotating shaft 8 passes through the upper housing 2012, the adjusting member 6, and the locking claw member 204 in sequence. The adjusting member 6 and the locking claw member 204 are both rotatable relative to the second rotating shaft 8. This ensures that the adjusting member 6 and the locking claw member 204 are coaxially arranged within the housing 201, and that the adjusting member 6 and the locking claw member 204 rotate coaxially. This ensures that the adjusting member 6 and the locking claw member 204 can rotate in a preset direction to unlock the rear door lock device 100.

[0067] Furthermore, the second rotary spring 7 is sleeved on the second rotating shaft 8, and its two ends are respectively connected to the adjusting member 6 and the outer casing 201. This arrangement allows the second rotary spring 7 to be compressed in a preset direction within the outer casing 201, and also allows the second rotary spring 7 to drive the adjusting member 6 to rotate in a direction opposite to the preset direction. This ensures that the adjusting member 6 can still drive the locking claw 204 to rotate in the preset direction when the rear door lock device 100 is subsequently unlocked, thus achieving the desired result for the rear door lock device 100.

[0068] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 , Figure 11 and Figure 12As shown, the rear door lock device 100 also includes a transmission component 9 and a drive component 5, which is a drive motor 11. Both the drive component 5 and the transmission component 9 are located inside the housing 201. A first transmission gear 1101 is provided on the power output shaft of the drive motor 11. The transmission component 9 is a worm gear, and a second transmission gear 901 is provided at one end of the worm gear. The first transmission gear 1101 and the second transmission gear 901 mesh with each other, and the worm gear is in transmission cooperation with the adjusting component 6.

[0069] Specifically, in an example of the present invention, the driving component 5 is a drive motor 11, the transmission component 9 is a worm gear, and the worm gear is in transmission cooperation with the adjusting component 6. This allows the output power of the drive motor 11 to be transmitted to the adjusting component 6 through the worm gear, so as to drive the adjusting component 6 to rotate in a preset direction.

[0070] Furthermore, the second transmission gear 901 on the worm gear meshes with the first transmission gear 1101 on the power output shaft of the drive motor 11, so that the output power of the drive motor 11 can be transmitted along the direction of the first transmission gear 1101, the second transmission gear 901, the worm gear and the transmission component 9.

[0071] In an embodiment of the present invention, a second transmission gear 901 and a helical gear 902 are simultaneously provided on the worm gear, which is prone to radial runout when the worm gear rotates. The worm gear and the second transmission gear 901 are installed between the upper housing 2012 and the electrical component connector 16, with the second transmission gear 901 located at the left end of the worm gear. The second transmission gear 901 and the left end of the worm gear are disposed in the groove 20121 of the upper housing 2012, and the right end of the worm gear is disposed on the platform of the electrical component connector 16. A U-shaped groove is provided on the upper housing 2012 corresponding to the right end of the worm gear, and the U-shaped groove is tightly engaged with the right end of the worm gear. This arrangement can ensure the rotational stability of the worm gear, thereby reducing the jamming when the rear door lock device 100 is unlocked, and ensuring the operational reliability of the rear door lock device 100.

[0072] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 and Figure 11 As shown, the worm gear has helical teeth 902, and the adjusting member 6 has a rotating engagement protrusion 602. The helical teeth 902 and the rotating engagement protrusion 602 are in a transmission engagement. Specifically, the helical teeth 902 on the worm gear rotate as the worm gear rotates. The rotating engagement protrusion 602 on the adjusting member 6 can be in a transmission engagement with the helical teeth 902 on the worm gear, so that the worm gear drives the adjusting member 6 to rotate. In an embodiment of the present invention, the rotation direction of the worm gear is... Figure 3 The rotation direction of the mating protrusion 602 is clockwise and the rotation direction is the same as that of the other two parts. Figure 3By rotating the adjustment component clockwise, the direction of the power output from the drive motor 11 can be ultimately changed to the preset direction of the adjustment component 6, ensuring that the adjustment component 6 can move along... Figure 3 The correct clockwise rotation ensures the reliable operation of the rear door lock device 100.

[0073] Combination Figure 11 As shown, the projection of the helical tooth 902 on the worm shaft axis has a gap notch 9021. When the helical tooth 902 rotates to the point where the gap notch 9021 faces the rotating engagement protrusion 602 on the adjusting member 6, the rotating engagement protrusion 602 disengages from the transmission engagement with the helical tooth 902. At this time, the worm no longer exerts force on the adjusting member 6, and the adjusting member 6 will not continue to rotate in the preset direction. Instead, under the action of the second rotary spring 7, the adjusting member 6 is driven to rotate in the opposite direction to the preset direction and reset. In this way, in the subsequent unlocking operation of the rear door lock device 100, the adjusting member 6 can drive the lock claw 204 to rotate again in the preset direction, thereby realizing the multiple cycle unlocking of the rear door lock device 100.

[0074] Combination Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the rear door lock device 100 also includes a pressure rod 10. A one-way rotation limiting part 903 is provided on the circumferential portion of the worm gear. The one-way rotation limiting part 903 is spaced apart from the helical teeth 902. The pressure rod 10 and the one-way rotation limiting part 903 are engaged in a limiting fit on the circumferential portion of the worm gear. Specifically, the one-way rotation limiting part 903 is arranged circumferentially along the worm gear, and its circumferential edge gradually extends radially away from the worm gear. The closest point of the circumferential edge of the one-way rotation limiting part 903 to the worm gear along the radial direction is connected to the farthest point of the circumferential edge of the one-way rotation limiting part 903 to the worm gear along the radial direction. The lower end of the pressure rod 10 abuts against the one-way rotation limiting part 903 for limiting. A pressure rod spring 1001 is provided in the pressure rod 10. One end of the pressure rod spring 1001 is connected to the pressure rod 10, and the other end is connected to the outer casing 201.

[0075] Furthermore, during the rotation of the worm, the one-way rotation limiting part 903 rotates coaxially with the worm, and the pressure spring 1001 is always in a compressed state so that the pressure rod 10 abuts against the one-way rotation limiting part 903. When the one-way rotation limiting part 903 rotates to the point where the pressure rod 10 contacts the outermost edge of the one-way rotation limiting part 903 at the farthest point along the radial direction of the worm, the worm continues to rotate. Under the action of the compression spring, the pressure rod 10 jumps from the outermost edge of the one-way rotation limiting part 903 at the farthest point along the radial direction of the worm to the closest point along the radial direction of the worm.

[0076] Furthermore, in an embodiment of the present invention, the rotation direction of the worm is fixed. If the worm tends to reverse, the point closest to the outermost edge of the pressure rod 10 and the one-way rotation limiting part 903 along the radial direction of the worm will be matched with the side wall along the radial direction of the worm at the point furthest from the outermost edge of the one-way rotation limiting part 903 along the radial direction of the worm. This can prevent the worm from reversing and ensure the reliability of the rotation direction of the transmission member 9. With this arrangement, it can be ensured that the driving member 5 drives the adjusting member 6 to rotate in a preset direction, and it can prevent jamming between the adjusting member 6 and the transmission member 9, thereby ensuring the operational reliability of the rear door lock device 100.

[0077] Combination Figure 1 As shown, the driving component 5 is an emergency handle 1506. One end of the emergency handle 1506 is connected to the locking claw component 204, and the other end of the emergency handle 1506 is suitable for installation inside the vehicle. Specifically, in an embodiment of the present invention, the rear door lock device 100 is provided with a door lock emergency switch mechanism 15, wherein the door lock emergency switch mechanism 15 includes a pull cable housing, a pull cable clip connector 1502, an emergency pull cable 1503, a cable protection clip 1504, a handle end clip connector 1505, an emergency handle 1506, and an emergency handle mounting plate 1507.

[0078] Furthermore, the pull cable connector 1502 is provided with a cylindrical ball head, and the locking claw 204 is provided with a protruding cylinder. The cylindrical ball head is engaged with the protruding cylinder, so that when the emergency handle 1506 is pulled, the emergency handle 1506 can drive the locking claw 204 along the pull cable. Figure 3 Rotating clockwise in the middle allows the first abutment limiting step 2041 on the locking claw 204 to move away from the secondary engagement point. This cancels the limiting effect of the locking claw 204 on the locking plate 202, allowing the locking plate 202 to still move along the first rotation spring 203. Figure 3 Rotating clockwise in the middle can unlock the second locking part 2021 from the first locking part 101. In this way, when the vehicle is in an emergency, the occupants can still manually pull the emergency handle 1506 to unlock the tailgate lock device 100. The tailgate lock device 100 of this embodiment can be used for vehicle emergencies.

[0079] The cable protector 1504 is equipped with a claw 15041, which engages with the emergency handle mounting plate 1507 to fix the cable protector 1504 to the emergency handle mounting plate 1507. The cable protector 1504 has a through hole 15042, through which the pull cable can pass. This allows the cable protector 1504 to support the pull cable and prevents the pull cable from interfering with the operation of the rear door lock device 100 due to excessive length. The emergency handle mounting plate 1507 is provided with a third mounting hole and a first positioning hole, with at least two of each. The two third mounting holes are spaced apart in the vertical direction of the emergency handle mounting plate 1507, and the two first positioning holes are spaced apart in the vertical direction of the emergency handle mounting plate 1507. In this way, the emergency handle mounting plate 1507 can be positioned on the rear door interior panel through the two first positioning holes, and the emergency handle mounting plate 1507 can be connected and fixed to the rear door interior panel through the two third mounting holes.

[0080] The handle end clamp 1505 is connected to the emergency handle 1506 so that the emergency handle 1506 is connected to the pull cable drive. When the emergency handle 1506 is pulled, the pull cable is activated, which in turn drives the pull cable clamp 1502, thereby pulling the locking claw 204. Figure 3 Rotating clockwise in the middle can release the pressure of the first abutment limiting step 2041 of the locking claw 204 on the second abutment limiting step 2022 of the locking plate 202, allowing the locking plate 202 to move under the action of the first rotary spring 203. Figure 3 Rotating clockwise in the middle can unlock the second locking part 2021 and the first locking part 101, thereby opening the rear door through the door lock emergency switch mechanism 15.

[0081] Combination Figure 1 , Figure 6 , Figure 8 and Figure 9 As shown, a sensor 12 is also provided inside the housing 201. The sensor 12 selectively abuts against the locking claw 204, and the sensor 12 is adapted to be connected to the vehicle's central locking system. Specifically, in an embodiment of the present invention, when the second locking part 2021 is locked in place with the first locking part 101, the locking claw 204 abuts against the sensor 12. After the tailgate door lock device 100 is unlocked, the locking claw 204... Figure 3When the locking claw 204 rotates clockwise and moves away from the contact position with sensor 12, sensor 12 receives a signal that the locking claw 204 has moved away from its contact position and transmits this signal to the vehicle's central control system via wiring harness, so that the tailgate indicator light is displayed on the vehicle's central control system. When the locking claw 204 rotates back to the position of contact with sensor 12 under the action of return spring 4, sensor 12 receives a signal that the locking claw 204 has returned to its contact position and transmits this signal to the vehicle's central control system via wiring harness, so that the tailgate indicator light is displayed on the vehicle's central control system.

[0082] Combination Figure 1 , Figure 6 and Figure 7 As shown, the tailgate door lock device 100 also includes an electrical component connector 16. The electrical component connector 16 is electrically connected to the drive motor 11 and the sensor 12 via electrode plates 17. The sensor 12 is provided with at least two protruding connecting parts, which engage with the electrical component connector 16 to fix the position of the sensor 12 in the tailgate door lock device 100. The electrical component connector 16 is provided with a wiring harness connector 1601, which is connected to the tailgate wiring harness. The electrical component connector 16 can selectively control the rotation of the drive motor 11, supply power to the drive motor 11, and transmit the signal from the sensor 12 to the vehicle's central control system.

[0083] Furthermore, the electrical component connector 16 is fixed to the bottom shell 2011 of the lock body assembly 2 by two first hooks 1602 at the tail and a first positioning mounting post 1603 on the side. The upper shell 2012 is engaged and fixed with the second hooks 1604 of the electrical component connector 16 by the snap-fit ​​interfaces 20122 on the left, right and rear sides, and is positioned and installed with the electrical component connector 16 and the bottom shell 2011 by the second positioning mounting post 20123 on the side of the upper shell 2012.

[0084] According to an embodiment of the present invention, in combination Figures 1-17 The diagram illustrates the opening process of the rear door lock device 100.

[0085] The wiring harness connector of the electrical component connector 16 receives the tailgate opening signal through the tailgate wiring harness and converts the signal into a command, which is then transmitted to the drive motor 11 via the electrode plate 17. The drive motor 11 then... Figure 3 The gear rotates counterclockwise, transmitting power to the worm gear via the meshing of the first transmission gear 1101 and the second transmission gear 901. The worm gear then drives the helical gear 902 to rotate in a clockwise direction. Figure 3 When rotated clockwise, the rotating engagement protrusion 602 of the adjusting member 6 engages with the helical gear 902, causing the adjusting member 6 to rotate clockwise. Figure 3When rotated clockwise, the adjusting member 6 abuts against the limiting engagement part 2042 on the locking claw member 204, thereby driving the locking claw member 204 to rotate clockwise. Figure 3 The lock claw 204 rotates clockwise until the first abutment limit step 2041 on the lock claw 204 no longer presses against the second abutment limit step 2022 on the lock plate 202. The lock claw 204 and the lock plate 202 disengage from the secondary engagement point. At this time, the return spring 4 is pressed by the lock claw 204, and the lock claw 204 releases its contact with the sensor 12. The sensor 12 transmits the signal to the vehicle's central control through the wiring harness connector 1601 of the electrical component connector 16 and the tailgate wiring harness, so as to illuminate the tailgate opening indicator light on the central control.

[0086] When the adjusting component 6 is pulled around the second rotating shaft 8 by the traction of the worm and the helical gear 902... Figure 3 When rotated clockwise, the guide groove 601 on the adjusting member 6 slides along the guide protrusion 2023 on the locking piece 202 until it disengages at the tail slope of the guide protrusion 2023. Then, under the action of the first rotary spring 203, the locking piece 202 rotates around the first rotating shaft 3. Figure 3 Rotating clockwise in the middle, the second locking part 2021 and the first locking part 101 disengage, the rear door lock device 100 is unlocked, and the rear door opens.

[0087] After the rear door lock device 100 is unlocked, the worm gear drives the spiral gear 902 to rotate one revolution. The rotating engagement protrusion 602 of the adjusting member 6 is then positioned at the gap notch 9021 of the spiral gear 902. At this point, the spiral gear 902 exerts no traction on the adjusting member 6, and the adjusting member 6 quickly rotates under the action of the second rotary spring 7. Figure 3 The middle part is rotated in the opposite direction of clockwise to make the adjusting part 6 quickly reset. At this time, the guide groove 601 on the adjusting part 6 abuts against the trapezoidal tail end of the guide protrusion 2023 on the locking piece 202. At the same time, the locking claw 204 is quickly reset under the action of the reset spring 4. The limiting mating part 2042 on the locking claw 204 re-abuts and engages with the adjusting part 6. At this time, the first abutting limiting step 2041 on the locking claw 204 and the second abutting limiting step 2022 on the locking piece 202 are at the first engagement point.

[0088] According to an embodiment of the present invention, in combination Figures 1-17 The locking process of the rear door lock device 100 is described as shown.

[0089] When the tailgate is closed, the first locking part 101 presses the locking plate 202, and the locking plate 202... Figure 3The first rotating shaft 3 rotates in the opposite direction of clockwise rotation, and the locking plate 202 presses the first rotary spring 203. When the locking plate 202 rotates counterclockwise, the guide groove 601 on the adjusting member 6 slides into the tail end of the guide protrusion 2023 on the locking plate 202, and the adjusting member 6 rotates in the opposite direction of clockwise rotation. Figure 3 The locking claw 204 rotates clockwise and counterclockwise under the action of the return spring 4, following the adjustment member 6. Figure 3 The lock is rotated clockwise until the first abutting limit step 2041 on the lock claw 204 and the second abutting limit step 2022 on the lock plate 202 rotate to the secondary engagement point. At this time, the lock claw 204 presses the lock plate 202, and the locking groove on the lock plate 202 hooks the locking pin on the lock buckle 1, and the rear door lock device 100 completes locking.

[0090] According to an embodiment of the present invention, in combination Figures 1-17 As shown, the emergency unlocking process of the rear door lock device 100 is described.

[0091] When an emergency occurs and the tailgate needs to be manually opened from the inside of the vehicle, the occupants can manually lower the emergency handle 1506. The emergency handle 1506, via a pull cable, drives the locking claw 204 to rotate around the second pivot 8. Figure 2 When rotated clockwise, the first abutment limiting step 2041 on the locking claw 204 and the second abutment limiting step 2022 on the locking plate 202 disengage from the secondary engagement point. The locking plate 202 loses the clamping force of the locking claw 204 and rotates around the first rotating shaft 3 under the action of the first rotary spring 203. Figure 2 Rotate clockwise until the second locking part 2021 and the first locking part 101 disengage, thus unlocking the back door lock device 100.

[0092] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0093] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rear door lock device, characterized in that, include: A locking element, the locking element being adapted to be installed on a vehicle body and having a first locking part; Lock body assembly, the lock body assembly comprising: A housing adapted for mounting on a rear tailgate; A locking plate, which is rotatably disposed within the housing and is provided with a second locking part; A first rotary spring, one end of which is connected to the outer casing and the other end of which is connected to the locking plate; A locking claw is rotatably disposed within the housing and selectively abuts against and limits the locking plate, so that the first locking portion and the second locking portion are selectively locked together.

2. The rear door lock device according to claim 1, characterized in that, One of the first locking part and the second locking part is a locking groove, and the other is a locking pin. The locking groove and the locking pin are selectively locked together.

3. The rear door lock device according to claim 1, characterized in that, It also includes a first rotating shaft, through which the outer shell and the locking plate are passed, the locking plate being rotatable relative to the first rotating shaft, and a first rotary spring being sleeved on the first rotating shaft with its two ends connected to the locking plate and the outer shell respectively.

4. The rear door lock device according to claim 1, characterized in that, The locking claw is provided with a first abutting and limiting step, and the locking plate is provided with a second abutting and limiting step, wherein the first abutting and limiting step and the second abutting and limiting step selectively abut and limit each other.

5. The rear door lock device according to claim 4, characterized in that, There are two second abutment limiting steps, which are spaced apart in the circumferential direction of the locking piece. When the first locking part and the second locking part are locked together, the first abutment limiting step selectively abuts and limits one of the two second abutment limiting steps. When the first locking part and the second locking part are disengaged, the first abutment limiting step selectively abuts and limits the other of the two second abutment limiting steps.

6. The rear door lock device according to claim 1, characterized in that, It also includes a return spring, which is disposed between the locking claw and the housing.

7. The rear door lock device according to claim 1, characterized in that, It also includes a drive component, which is connected to the locking claw component in a transmission manner.

8. The rear door lock device according to claim 7, characterized in that, It also includes an adjusting member, which is disposed inside the housing and selectively engages with the driving member. The adjusting member is located above the locking claw and is coaxially arranged with the locking claw. A limit engagement part is provided on one side of the locking claw so that when the driving member drives the adjusting member to rotate in a preset direction, it drives the locking claw to rotate synchronously.

9. The rear door lock device according to claim 8, characterized in that, The adjusting member is provided with a guide groove, and the locking piece is provided with a guide protrusion. The guide protrusion and the guide groove are slidably guided and engaged.

10. The rear door lock device according to claim 8, characterized in that, It also includes a second rotary spring, which is disposed inside the housing. One end of the second rotary spring is connected to the housing, and the other end is connected to the adjusting member.

11. The rear door lock device according to claim 10, characterized in that, It also includes a second rotating shaft, through which the outer shell, the adjusting member and the locking claw are sequentially passed. The adjusting member and the locking claw are both rotatable relative to the second rotating shaft. The second rotary spring is sleeved on the second rotating shaft and its two ends are respectively connected to the adjusting member and the outer shell.

12. The rear door lock device according to claim 8, characterized in that, It also includes a transmission component, the driving component being a drive motor, both the driving component and the transmission component being disposed within the housing, a first transmission gear being disposed on the power output shaft of the drive motor, the transmission component being a worm gear, a second transmission gear being disposed at one end of the worm gear, the first transmission gear and the second transmission gear meshing with each other, and the worm gear engaging with the adjusting component in a transmission cooperation.

13. The rear door lock device according to claim 12, characterized in that, The worm gear is provided with helical teeth, and the adjusting member is provided with a rotating engagement protrusion. The helical teeth and the rotating engagement protrusion are in a transmission engagement.

14. The rear door lock device according to claim 13, characterized in that, The projection of the helical teeth on the worm shaft axis has a gap notch.

15. The rear door lock device according to claim 13, characterized in that, It also includes a pressure rod, and the circumferential portion of the worm gear is provided with a one-way rotation limiting part. The one-way rotation limiting part is spaced apart from the helical teeth, and the pressure rod and the one-way rotation limiting part are engaged in a circumferential upper limit cooperation with the worm gear.

16. The rear door lock device according to claim 7, characterized in that, The driving component is an emergency handle, one end of which is connected to the locking claw component, and the other end of which is adapted to be installed inside the vehicle.

17. The rear door lock device according to claim 1, characterized in that, The housing also contains a sensor that selectively abuts against the locking claw and is adapted to be connected to the vehicle's central control system.

18. A vehicle, characterized in that, Includes the rear door lock device according to any one of claims 1-17.

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