Compact structure automobile electric tail gate lock

Abstract

The utility model relates to a compact structure's car electric tail door lock, including rear shell, cavity, face shell and bottom plate, the rear shell and face shell cover respectively the both ends of cavity, install drive assembly on the rear shell, install transmission assembly in the cavity, install the cover plate on the face shell, install locking assembly on the cover plate, transmission assembly includes primary planetary gear set, primary planet carrier, secondary planetary gear set and secondary planet carrier, the primary planetary gear set is installed primary planet carrier below, secondary planetary gear set is installed between primary planet carrier and secondary planet carrier, the secondary planet carrier is meshed and is connected with drive gear, the drive gear is meshed with guide rail rack, guide rail rack can be back and forth along the cavity moves, thereby makes locking assembly switch in the lock and the lock state. The utility model has the advantages of high transmission efficiency, stability and good reliability.

Description

Technical Field

[0001] This utility model relates to the field of electric tailgate lock technology, specifically to a compact electric tailgate lock. Background Technology

[0002] With the improvement of automotive intelligence and the increasing demand for convenience from users, electronic electric tailgate locks are being used more and more widely in automotive tailgate systems. These locks not only need to meet strict reliability standards, but also need to adapt to the limited installation space of vehicles, which puts forward higher requirements for the compactness of the structure and the transmission efficiency. Traditional automotive electric tailgate locks often have problems such as loose layout, redundant transmission levels, or low space utilization, which makes them difficult to install in space-constrained scenarios such as automotive tailgates, and their operational stability is also difficult to guarantee, thus restricting their further application in the automotive field. Utility Model Content

[0003] The purpose of this invention is to provide a compact automotive electric tailgate lock that features high transmission efficiency, good stability and reliability.

[0004] A compact electric tailgate lock for automobiles includes a rear shell, a cavity, and a front shell. The rear shell and the front shell respectively cover both ends of the cavity. A drive assembly is mounted on the rear shell, and a transmission assembly is mounted in the cavity. A cover plate is mounted on the front shell, and a locking assembly is mounted on the cover plate. A base plate covers the locking assembly and connects to the cover plate and the cavity. The transmission assembly includes a primary planetary gear set, a primary planetary carrier, a secondary planetary gear set, and a secondary planetary carrier. The primary planetary gear set is mounted below the primary planetary carrier, and the secondary planetary gear set is mounted between the primary and secondary planetary carriers. The secondary planetary carrier is meshed with a drive gear, and the drive gear meshes with a guide rack. The guide rack can move back and forth along the cavity, thereby switching the locking assembly between unlocked and locked states.

[0005] In the above solution, the drive assembly is installed in the rear shell, the transmission assembly is installed in the cavity, and the locking assembly is installed on the front shell through the cover plate. The layout of each component is compact and they fit together tightly, reducing the space occupied by the overall electric tailgate lock. It is suitable for installation scenarios with high space requirements. The transmission assembly is composed of multi-stage gear sets and transmission components. The first-stage planetary gear set, the first-stage planetary carrier, the second-stage planetary gear set, and the second-stage planetary carrier transmit power in sequence, which can effectively buffer and disperse power, making the power transmission smoother. This multi-stage transmission method can also adjust the transmission ratio according to actual needs to ensure that the drive gear can drive the guide rail rack to move at a suitable speed and torque, which improves the stability and reliability of the electric tailgate lock's unlocking and locking operations. The meshing of the gears and the guide rail rack converts the rotational motion into linear motion, realizing the switching between the unlocking and locking states of the locking assembly.

[0006] Furthermore, the drive assembly includes a drive member, a worm gear, and a worm wheel. The worm gear is connected to the drive end of the drive member, and the worm wheel is meshed with the worm gear. The worm wheel has an iron gear at its center, and the iron gear has a gear structure that meshes with the first-stage planetary gear set.

[0007] In the above scheme, as the worm gear rotates, the central iron gear also rotates. The iron gear is equipped with a gear structure that meshes with the first-stage planetary gear set in the transmission assembly. Thus, the rotation of the iron gear drives the first-stage planetary gear set to start rotating. The worm gear and worm drive can effectively reduce and change the direction of the rotational motion of the driving component. When the high-speed rotational motion output by the driving component is transmitted to the worm gear through the worm, the speed will be greatly reduced due to the transmission characteristics of the worm gear, while the torque will increase accordingly. This allows the subsequent transmission assembly to work at a suitable speed and torque, ensuring the stability and reliability of the entire automotive electric tailgate lock transmission system.

[0008] Furthermore, the primary planetary carrier includes a circular primary planetary disk and a primary transmission gear. The primary transmission gear is located at the center of the primary planetary disk. The secondary planetary gear set is meshed with the primary transmission gear, and the primary planetary gear set is rotatably mounted on the primary planetary disk.

[0009] In the above scheme, since the first-stage planetary gear set is rotatably mounted on the first-stage planetary disk of the first-stage planetary carrier, the rotation of the first-stage planetary gear set will drive the first-stage planetary disk to rotate. The first-stage transmission gear located at the center of the first-stage planetary disk will also rotate. Since the second-stage planetary gear set meshes with the first-stage transmission gear, the first-stage transmission gear will drive the second-stage planetary gear set to start running. The first-stage planetary gear set is rotatably mounted on the first-stage planetary disk. The first-stage planetary disk provides stable support and a rotational foundation for the first-stage planetary gear set, reducing shaking and offset during the transmission process and ensuring the stability of the transmission.

[0010] Furthermore, the secondary planetary carrier includes a secondary planetary disk and a secondary transmission gear. The secondary transmission gear is located at the center of the secondary planetary disk. The drive gear is sleeved on the secondary transmission gear and meshes with it. The secondary planetary gear set is rotatably mounted on the secondary planetary disk.

[0011] In the above scheme, when the electric tailgate lock performs the unlocking or locking action, the drive component drives the first-stage planetary gear set to rotate, which in turn drives the first-stage planetary carrier to rotate. The first-stage transmission gear of the first-stage planetary carrier then drives the second-stage planetary gear set to rotate, and the rotation of the second-stage planetary gear set drives the second-stage planetary disk to rotate. Thus, the second-stage transmission gear located at the center of the second-stage planetary disk also rotates synchronously. Because the drive gear is mounted on the second-stage transmission gear and the two mesh with each other, the rotation of the second-stage transmission gear drives the drive gear to rotate. When the drive gear rotates, the guide rack meshing with it moves back and forth in a straight line along the cavity. This design allows the various components to be tightly integrated, effectively utilizing the internal space of the electric tailgate lock and making the overall structure more compact. The meshing method between the second-stage transmission gear and the drive gear can directly and efficiently transmit power from the second-stage planetary carrier to the drive gear, reducing power loss during transmission. Compared with other complex transmission methods, this direct meshing transmission structure can respond to the action of the drive component more quickly, making the unlocking and locking process of the electric tailgate lock faster.

[0012] Furthermore, the cover plate includes an upright plate, a first connecting plate, and a second connecting plate. The first connecting plate and the second connecting plate are respectively perpendicularly disposed at both ends of the upright plate, and both the first connecting plate and the second connecting plate are provided with connecting holes.

[0013] In the above scheme, the upright plate provides the main support for the entire cover plate, while the first connecting plate and the second connecting plate enhance the connection stability between the cover plate and the shell, thereby ensuring the stability and reliability of the cover plate in supporting the locking assembly.

[0014] Furthermore, the cavity has a groove at one end near the face shell, the groove and the face shell forming a slot, and the guide rail rack has a pushing part extending out of the slot.

[0015] Furthermore, the locking assembly includes a bracket, a toggle block, and a locking member. The toggle block and the locking member are rotatably mounted on the bracket. The pushing part movably abuts against the toggle block, and the toggle block movably abuts against the locking member.

[0016] In the above scheme, when the guide rail rack moves, the pushing part moves accordingly. The pushing part applies a force to the actuating block, causing the actuating block to rotate around its rotation axis. The actuating block converts its own rotational motion into a force on the locking element, causing the locking element to also rotate around its rotation axis. By controlling the direction of movement of the guide rail rack, the locking element can be switched between different rotation positions, thereby realizing the switching between the unlocking and locking states of the car power tailgate lock. The groove of the cavity and the face shell form a slot, and the pushing part of the guide rail rack extends out of the slot to cooperate with the actuating block. This design makes full use of the limited space inside the car power tailgate lock, making the power transmission path compact and avoiding space waste caused by unreasonable component layout. It is conducive to the miniaturization design of the overall structure of the car power tailgate lock.

[0017] This utility model discloses a compact car power tailgate lock with the advantages of high transmission efficiency, stability, and reliability. The drive component is installed in the rear shell, the transmission component is installed in the cavity, and the locking component is installed on the front shell through a cover plate. The layout of each component is compact and they fit together tightly, reducing the space occupied by the car power tailgate lock as a whole. It is suitable for installation scenarios with high space requirements. The transmission component consists of a multi-stage gear set and transmission components. The first-stage planetary gear set, the first-stage planetary carrier, the second-stage planetary gear set, and the second-stage planetary carrier transmit power in sequence, which can effectively buffer and disperse power, making the power transmission smoother. This multi-stage transmission method can also adjust the transmission ratio according to actual needs to ensure that the drive gear can drive the guide rail rack to move at a suitable speed and torque, which improves the stability and reliability of the car power tailgate lock's unlocking and locking operations. The meshing of the gears and the guide rail rack converts the rotational motion into linear motion, realizing the switching between the unlocking and locking states of the locking component. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a compact electric tailgate lock structure for an example.

[0019] Figure 2 This is a schematic diagram of a drive assembly, a transmission assembly, and a cover plate according to one embodiment.

[0020] Figure 3 This is a schematic diagram of the drive assembly and transmission assembly structure according to one embodiment.

[0021] Figure 4 This is a schematic diagram of a primary planetary carrier and a secondary planetary carrier according to one embodiment.

[0022] Figure 5 This is a schematic diagram of a locking assembly structure according to one embodiment.

[0023] Figure 6 This is a schematic diagram of the base plate in one embodiment.

[0024] Reference numerals: 1. Rear shell; 2. Cavity; 21. Groove; 3. Front shell; 4. Drive assembly; 41. Drive component; 42. Worm gear; 43. Worm wheel; 431. Iron gear; 5. Transmission assembly; 51. First-stage planetary gear set; 52. First-stage planetary carrier; 521. First-stage planetary disk; 522. First-stage transmission gear; 53. Second-stage planetary gear set; 54. Second-stage planetary carrier; 541. Second-stage planetary disk; 542. Second-stage transmission gear; 6. Cover plate; 61. Vertical plate; 62. First connecting plate; 63. Second connecting plate; 7. Locking assembly; 71. Bracket; 72. Actuating block; 73. Locking component; 8. Drive gear; 9. Guide rail rack; 91. Pushing part; 10. Base plate. Detailed Implementation

[0025] The present invention provides a more detailed description of a compact electric tailgate lock for automobiles, in conjunction with specific embodiments and accompanying drawings.

[0026] like Figure 1 and Figure 2 As shown in a preferred embodiment, a compact electric tailgate lock of the present invention includes a rear shell 1, a cavity 2, a front shell 3, and a base plate 10. The rear shell 1 and the front shell 3 are respectively installed on both ends of the cavity 2. A drive assembly 4 is installed on the rear shell 1, a transmission assembly 5 is installed inside the cavity 2, a cover plate 6 is installed on the front shell 3, a locking assembly 7 is installed on the cover plate 6, and the base plate 10 is installed on the locking assembly 7 and connected to the cover plate 6 and the cavity 2. The transmission assembly 5 includes a primary planetary gear set 51, a primary planetary carrier 52, a secondary planetary gear set 53, and a secondary planetary carrier 54. The primary planetary gear set 51 is installed below the primary planetary carrier 52, and the secondary planetary gear set 53 is installed between the primary planetary carrier 52 and the secondary planetary carrier 54. The secondary planetary carrier 54 is meshed with a drive gear 8, and the drive gear 8 meshes with a guide rack 9. The guide rack 9 can move back and forth along the cavity 2, thereby allowing the locking assembly 7 to switch between unlocking and locking states.

[0027] The drive assembly 4 is installed in the rear shell 1, the transmission assembly 5 is installed in the cavity 2, and the locking assembly 7 is installed on the front shell 3 through the cover plate 6. The layout of each component is compact and they fit together tightly, reducing the space occupied by the entire electric tailgate lock. It is suitable for installation scenarios with high space requirements. The transmission assembly 5 is composed of multi-stage gear sets and transmission components. The first-stage planetary gear set 51, the first-stage planetary carrier 52, the second-stage planetary gear set 53, and the second-stage planetary carrier 54 transmit power in sequence, which can effectively buffer and disperse power, making the power transmission smoother. This multi-stage transmission method can also adjust the transmission ratio according to actual needs to ensure that the drive gear 8 can drive the guide rail rack 9 to move at a suitable speed and torque, which improves the stability and reliability of the electric tailgate lock's unlocking and locking operations. The rotational motion is converted into linear motion through the meshing of the gear and the guide rail rack 9, realizing the switching between the unlocking and locking states of the locking assembly 7.

[0028] like Figure 2 and Figure 3 As shown, in some embodiments, the drive assembly 4 includes a drive member 41, a worm 42 and a worm wheel 43. The worm 42 is connected to the drive end of the drive member 41, and the worm wheel 43 is meshed with the worm 42. The worm wheel 43 has an iron gear 431 at its center, and the iron gear 431 has a gear structure that meshes with the first-stage planetary gear set 51. During the rotation of the worm gear 43, the central iron gear 431 also rotates. The iron gear 431 is equipped with a gear structure that meshes with the first-stage planetary gear set 51 in the transmission assembly 5. Thus, the rotation of the iron gear 431 drives the first-stage planetary gear set 51 to start rotating. The transmission of the worm gear 43 and the worm 42 can effectively reduce the rotational motion of the drive component 41 and change its direction. When the high-speed rotational motion output by the drive component 41 is transmitted to the worm gear 43 through the worm 42, the speed will be greatly reduced due to the transmission characteristics of the worm gear 43 and the worm 42, while the torque will increase accordingly. This allows the subsequent transmission assembly 5 to work at a suitable speed and torque, ensuring the stability and reliability of the entire automotive electric tailgate lock transmission system.

[0029] like Figures 2 to 4As shown, in some embodiments, the primary planetary carrier 52 includes a circular primary planetary disk 521 and a primary transmission gear 522. The primary transmission gear 522 is located at the center of the primary planetary disk 521. The secondary planetary gear set 53 meshes with the primary transmission gear 522, and the primary planetary gear set 51 is rotatably mounted on the primary planetary disk 521. Since the primary planetary gear set 51 is rotatably mounted on the primary planetary disk 521 of the primary planetary carrier 52, the rotation of the primary planetary gear set 51 will drive the primary planetary disk 521 to rotate. The primary transmission gear 522 located at the center of the primary planetary disk 521 will also rotate. Since the secondary planetary gear set 53 meshes with the primary transmission gear 522, the primary transmission gear 522 will drive the secondary planetary gear set 53 to start operating, thus rotatably mounting the primary planetary gear set 51 on the primary planetary disk 521. The primary planetary disk 521 provides stable support and a rotational foundation for the primary planetary gear set 51, reducing swaying and offset during transmission and ensuring transmission stability.

[0030] like Figures 2 to 4 As shown, in some embodiments, the secondary planetary carrier 54 includes a secondary planetary disk 541 and a secondary transmission gear 542. The secondary transmission gear 542 is located at the center of the secondary planetary disk 541. The drive gear 8 is sleeved on the secondary transmission gear 542 and meshes with it. The secondary planetary gear set 53 is rotatably mounted on the secondary planetary disk 541. When the car's electric tailgate lock performs an unlocking or locking action, the drive assembly 4 drives the primary planetary gear set 51 to rotate. The primary planetary gear set 51 drives the primary planetary carrier 52 to rotate. The primary transmission gear 522 of the primary planetary carrier 52 then drives the secondary planetary gear set 53 to rotate. The rotation of the secondary planetary gear set 53 drives the secondary planetary disk 541 to rotate. Thus, the secondary transmission gear 542, located at the center of the secondary planetary disk 541, also rotates synchronously. Because the drive gear 8 is sleeved on the secondary transmission gear 542 and the two mesh with each other, the rotation of the secondary transmission gear 542 drives the drive gear 8 to rotate. When the drive gear 8 rotates, the guide rack 9 that meshes with it moves back and forth in a straight line along the cavity 2. This design allows the various components to be tightly integrated, effectively utilizing the internal space of the car's electric tailgate lock and making the overall structure more compact. The meshing method between the secondary transmission gear 542 and the drive gear 8 can directly and efficiently transmit power from the secondary planetary carrier 54 to the drive gear 8, reducing power loss during transmission. Compared with other complex transmission methods, this direct meshing transmission structure can respond to the action of the drive component 4 more quickly, making the unlocking and locking process of the car's electric tailgate lock faster.

[0031] like Figure 1 and Figure 2As shown, in some embodiments, the cover plate 6 includes a vertical plate 61, a first connecting plate 62, and a second connecting plate 63. The first connecting plate 62 and the second connecting plate 63 are respectively vertically disposed at both ends of the vertical plate 61, and both the first connecting plate 62 and the second connecting plate 63 are provided with connecting holes. The vertical plate 61 provides the main supporting force for the entire cover plate 6, while the first connecting plate 62 and the second connecting plate 63 enhance the connection stability between the cover plate 6 and the face shell 3, thereby ensuring the stability and reliability of the cover plate 6 in supporting the locking assembly 7.

[0032] like Figure 5 As shown, in some embodiments, the cavity 2 is provided with a groove 21 at one end near the face shell 3, the groove 21 and the face shell 3 form a slot, and the guide rail rack 9 is provided with a pushing part 91 extending out of the slot.

[0033] like Figure 5 As shown, in some embodiments, the locking assembly 7 includes a bracket 71, a toggle block 72, and a locking member 73. The toggle block 72 and the locking member 73 are rotatably mounted on the bracket 71. The pushing part 91 is in movable contact with the toggle block 72, and the toggle block 72 is in movable contact with the locking member 73. When the guide rack 9 moves, the pushing part 91 moves accordingly. The pushing part 91 applies a force to the actuating block 72, causing the actuating block 72 to rotate around its rotation axis. The actuating block 72 converts its own rotational motion into a force on the locking member 73, causing the locking member 73 to also rotate around its rotation axis. By controlling the direction of movement of the guide rack 9, the locking member 73 can be switched between different rotation positions, thereby realizing the switching between the unlocking and locking states of the car power tailgate lock. The groove 21 of the cavity 2 and the face shell 3 form a slot. The pushing part 91 of the guide rack 9 extends out of the slot to cooperate with the actuating block 72. This design makes full use of the limited space inside the car power tailgate lock, making the power transmission path compact and avoiding space waste caused by unreasonable component layout. It is conducive to the miniaturization design of the overall structure of the car power tailgate lock.

[0034] The present invention relates to the working principle and process of a compact electric tailgate lock for automobiles. When the electric tailgate lock needs to be unlocked or locked, the drive assembly 4 installed on the rear shell 1 starts to work. The drive assembly 4 generates power output, which is first transmitted to the first-stage planetary gear set 51 in the transmission assembly 5.

[0035] After receiving power, the first-stage planetary gear set 51 begins to rotate. Since the first-stage planetary gear set 51 is installed below the first-stage planetary carrier 52, it will drive the first-stage planetary carrier 52 to rotate. When the first-stage planetary carrier 52 rotates, it will transmit power to the second-stage planetary gear set 53, causing the second-stage planetary gear set 53 to also start operating.

[0036] The secondary planetary gear set 53 is located between the primary planetary carrier 52 and the secondary planetary carrier 54. It further transmits the power received from the primary planetary carrier 52 to the secondary planetary carrier 54, causing the secondary planetary carrier 54 to rotate. During the rotation of the secondary planetary carrier 54, the drive gear 8 meshing with it will be driven to rotate.

[0037] When the drive gear 8 rotates, it meshes with the guide rack 9, converting the rotational motion into linear motion of the guide rack 9, causing the guide rack 9 to move back and forth along the cavity 2. The locking assembly 7, mounted on the cover plate 6 of the faceplate 3, is connected to the guide rack 9. The back-and-forth movement of the guide rack 9 drives the locking assembly 7, thereby switching the locking assembly 7 between the unlocking and locking states. When unlocking is required, the drive assembly 4 moves the guide rack 9 in one direction, causing the locking assembly 7 to enter the unlocking state; when locking is required, the drive assembly 4 moves the guide rack 9 in the opposite direction, causing the locking assembly 7 to enter the locking state.

[0038] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A compact automotive power tailgate lock, characterized in that, The device includes a rear shell, a cavity, a front shell, and a base plate. The rear shell and the front shell respectively cover both ends of the cavity. A drive assembly is installed on the rear shell, and a transmission assembly is installed inside the cavity. A cover plate is installed on the front shell, and a locking assembly is installed on the cover plate. The base plate covers the locking assembly and is connected to the cover plate and the cavity. The transmission assembly includes a first-stage planetary gear set, a first-stage planetary carrier, a second-stage planetary gear set, and a second-stage planetary carrier. The first-stage planetary gear set is installed below the first-stage planetary carrier, and the second-stage planetary gear set is installed between the first-stage and second-stage planetary carriers. The second-stage planetary carrier is meshed with a drive gear, and the drive gear meshes with a guide rack. The guide rack can move back and forth along the cavity, thereby allowing the locking assembly to switch between unlocked and locked states.

2. The compact electric tailgate lock according to claim 1, characterized in that, The drive assembly includes a drive member, a worm, and a worm wheel. The worm is connected to the drive end of the drive member, and the worm wheel is meshed with the worm. The worm wheel has an iron gear at its center, and the iron gear has a gear structure that meshes with the first-stage planetary gear set.

3. The compact electric tailgate lock according to claim 2, characterized in that, The primary planetary carrier includes a circular primary planetary disk and a primary transmission gear. The primary transmission gear is located at the center of the primary planetary disk. The secondary planetary gear set is meshed with the primary transmission gear. The primary planetary gear set is rotatably mounted on the primary planetary disk.

4. The compact electric tailgate lock according to claim 3, characterized in that, The secondary planetary carrier includes a secondary planetary disk and a secondary transmission gear. The secondary transmission gear is located at the center of the secondary planetary disk. The drive gear is sleeved on the secondary transmission gear and meshes with it. The secondary planetary gear set is rotatably mounted on the secondary planetary disk.

5. The compact electric tailgate lock according to claim 1, characterized in that, The cover plate includes a vertical plate, a first connecting plate, and a second connecting plate. The first connecting plate and the second connecting plate are respectively perpendicularly disposed at both ends of the vertical plate, and both the first connecting plate and the second connecting plate are provided with connecting holes.

6. The compact electric tailgate lock according to claim 1, characterized in that, The cavity has a groove at one end near the face shell, the groove and the face shell form a slot, and the guide rail rack has a pushing part extending out of the slot.

7. The compact electric tailgate lock according to claim 6, characterized in that, The locking assembly includes a bracket, a toggle block, and a locking member. The toggle block and the locking member are rotatably mounted on the bracket. The pushing part is in movable contact with the toggle block, and the toggle block is in movable contact with the locking member.

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