Actuator, vehicle door system and vehicle

Abstract

The utility model discloses an actuator, a vehicle door system and a vehicle. The actuator comprises a driving assembly, a transmission assembly, a damping assembly and an execution assembly, the driving assembly comprises a driving shaft, the transmission assembly comprises a transmission shaft, the transmission shaft is in transmission connection with the driving shaft and is perpendicular to the driving shaft, and the damping assembly is arranged in the length direction of the driving shaft and is connected with the end, close to the driving shaft, of the transmission shaft; the execution assembly comprises a main shaft and a nut push pipe in threaded connection with the main shaft, the main shaft is in transmission connection with the transmission shaft and is parallel to the driving shaft, and rotating motion of the main shaft can be converted into linear reciprocating motion of the nut push pipe. In this way, the actuator has the advantages of being short in fixed length section, small in size and high in adaptability.

Description

Technical Field

[0001] This application relates to the field of automotive parts, and in particular to an actuator, a door system, and a vehicle. Background Technology

[0002] With the development of intelligent and comfortable vehicles, many cars are now equipped with power tailgates. Power tailgates typically open and close using a power strut. Current power struts include linear, intersecting, and parallel layouts. Parallel layout power struts are widely used due to their relatively small installation space requirement. However, existing parallel layout power struts still have relatively long fixed lengths and are bulky, reducing their adaptability. Utility Model Content

[0003] The actuator, door system, and vehicle provided in this application can solve the technical problem that the parallel layout of electric struts has a long fixed length and large volume, which leads to reduced adaptability.

[0004] To solve the above-mentioned technical problems, one technical solution adopted in this application is: providing an actuator, the actuator comprising: a drive assembly including a drive shaft; a transmission assembly including a transmission shaft, the transmission shaft being drively connected to the drive shaft and perpendicular to the drive shaft; a damping assembly arranged along the length direction of the drive shaft and connected to one end of the transmission shaft near the drive shaft; and an actuation assembly including a main shaft and a nut push tube, the main shaft having a screw portion, the nut push tube having a nut portion, the nut portion being screwed to the screw portion, such that the nut push tube is screwed to the main shaft, the main shaft being drively connected to the transmission shaft and parallel to the drive shaft, wherein the rotational motion of the main shaft can be converted into the linear reciprocating motion of the nut push tube.

[0005] In some embodiments, the transmission assembly further includes a first bevel gear and a second bevel gear, the first bevel gear being disposed on the drive shaft and the second bevel gear being disposed on the transmission shaft, the first bevel gear meshing with the second bevel gear; the transmission assembly further includes a transmission wheel, the transmission wheel having a worm gear portion, the transmission shaft having a worm portion, the worm portion of the transmission shaft meshing with the worm gear portion of the transmission wheel; one end of the main shaft passes through the transmission wheel and is pulsatorically connected to the transmission wheel, wherein the transmission wheel is capable of driving the main shaft to rotate; the second bevel gear is located between the worm portion and the damping assembly.

[0006] In some embodiments, the transmission ratio between the first bevel gear and the second bevel gear is 1:1.

[0007] In some embodiments, the transmission assembly further includes an adapter disposed between the transmission wheel and the main shaft, the outer wall of the adapter being splinedly connected to the transmission wheel, and the inner wall of the adapter being splinedly connected to one end of the main shaft.

[0008] In some embodiments, the adapter is a flexible adapter.

[0009] In some embodiments, the outer wall of the adapter has an external spline, the inner wall of the adapter has an internal spline, and the width of the external spline is greater than the width of the internal spline.

[0010] In some embodiments, the external spline is a rectangular spline and the internal spline is a triangular spline.

[0011] In some embodiments, the actuator further includes a backlash elimination component disposed at one end of the drive shaft away from the damping component, the backlash elimination component being used to automatically eliminate the meshing backlash between the worm portion and the worm wheel portion.

[0012] In some embodiments, the actuator further includes a first bearing sleeved on the drive shaft and located between the worm portion and the second bevel gear.

[0013] In some embodiments, the actuator further includes a second bearing sleeved on the main shaft and located between the drive wheel and the nut push tube; the actuator further includes a third bearing sleeved on one end of the drive wheel and located further away from the second bearing relative to the worm gear portion.

[0014] In some embodiments, the actuator further includes a housing assembly having a receiving cavity, in which a portion of the actuation component, the drive component, the transmission component, and the damping component are disposed.

[0015] In some embodiments, the actuator further includes a first ball-and-socket connector and a second ball-and-socket connector. The first ball-and-socket connector is arranged along the length of the main shaft and is spaced apart from the end of the main shaft near the drive shaft. The second ball-and-socket connector is arranged along the length of the main shaft and is fixedly connected to the end of the nut push tube away from the drive shaft. The portion of the first ball-and-socket connector near the main shaft is fixed within the housing assembly.

[0016] In some embodiments, the actuator further includes a guide tube, at least a portion of the nut push tube is located within the guide tube, the guide tube is used to guide the linear reciprocating motion of the nut push tube, and one end of the guide tube near the drive shaft is fixed within the housing assembly.

[0017] In some embodiments, in the length direction of the main shaft, the distance between the guide tube and the central axis of the ball socket of the first ball socket connector is greater than or equal to 50 mm and less than or equal to 60 mm.

[0018] In some embodiments, in the length direction of the transmission shaft, the distance between the central axis of the drive shaft and the central axis of the drive shaft is greater than or equal to 35 mm and less than or equal to 45 mm.

[0019] Another technical solution adopted in this application is to provide a door system, which includes the actuator described in any of the above claims.

[0020] Another technical solution adopted in this application is to provide a vehicle, which includes the door system described above.

[0021] The beneficial effects of this application are as follows: Unlike existing technologies, the actuator provided in this application includes: a drive assembly comprising a drive shaft; a transmission assembly comprising a transmission shaft, wherein the transmission shaft is driveably connected to the drive shaft and perpendicular to the drive shaft; a damping assembly arranged along the length direction of the drive shaft and connected to the end of the transmission shaft near the drive shaft; and an actuation assembly comprising a main shaft and a nut push tube, wherein the main shaft has a screw portion, the nut push tube has a nut portion, the nut portion is screwed to the screw portion, such that the nut push tube is screwed to the main shaft, the main shaft is drively connected to the transmission shaft and parallel to the drive shaft, wherein the rotational motion of the main shaft can be converted into the linear reciprocating motion of the nut push tube. In the technical solution of this application, the main shaft is parallel to the drive shaft, thereby reducing the overall height of the actuator; furthermore, the transmission shaft is perpendicular to the drive shaft, and the damping assembly is arranged along the length direction of the drive shaft and connected to the end of the transmission shaft near the drive shaft, thereby shortening the fixed length section of the actuator. In this way, the actuator has the advantages of a short fixed length section, small size, and high adaptability. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the actuator provided in some embodiments of this application;

[0024] Figure 2 yes Figure 1A cross-sectional view of the actuator at AA;

[0025] Figure 3 This is an exploded view of the actuator provided in some embodiments of this application;

[0026] Figure 4 This is an exploded view of the actuator provided in some other embodiments of this application;

[0027] Figure 5 These are schematic diagrams of the housing assembly provided in some embodiments of this application;

[0028] Figure 6 This is an exploded view of the housing assembly provided in some embodiments of this application;

[0029] Figure 7 This is a schematic diagram of the structure of the first housing provided in some embodiments of this application;

[0030] Figure 8 This is a schematic diagram of the structure of the second housing provided in some embodiments of this application;

[0031] Figure 9 This is a schematic diagram of the structure of the adapter provided in some embodiments of this application;

[0032] Figure 10 This is a schematic diagram of the structure of a gap elimination component provided in some embodiments of this application;

[0033] Figure 11 This is an exploded schematic diagram of a gap elimination component provided in some embodiments of this application;

[0034] Figure 12 This is a schematic diagram of the structure of a door system provided in some embodiments of this application;

[0035] Figure 13 These are schematic diagrams of the vehicle structure provided in some embodiments of this application.

[0036] Explanation of reference numerals in the attached drawings: 100-Actuator, 110-Drive assembly, 111-Drive shaft, 120-Transmission assembly, 121-Transmission shaft, 1211-Worm gear section, 122-First bevel gear, 123-Second bevel gear, 124-Transmission wheel, 1241-Worm gear section, 125-Adapter, 1251-External spline, 1252-Internal spline, 126-First bearing, 127-Third bearing, 130-Damping assembly 140 - Actuating component; 141 - Main shaft; 1411 - Screw section; 142 - Nut push tube; 1421 - Nut section; 143 - Second bearing; 150 - Clearance elimination component; 151 - Mounting base; 1511 - Receiving hole; 1512 - Support hole; 1513 - Elastic block; 152 - Second helical spring; 160 - First helical spring; 170 - Housing assembly; 171 - Receiving cavity; 1711 - Transmission cavity. 1711a - First receiving cavity, 1711b - Second receiving cavity, 1711c - Rib, 1712 - Drive cavity, 1713 - First locking hole, 1714 - Second locking hole, 1715 - Limiting hole, 172 - First housing, 1721 - First groove, 1722 - Second groove, 1723 - Fifth groove, 1724 - Sixth groove, 173 - Second housing, 1731 - Third groove, 1732 - Fourth groove 1733-Seventh groove, 1734-Eighth groove, 174-First retainer, 1751-Sealing strip, 1752-Sealing groove, 1761-Positioning pin, 1762-Positioning hole, 1771-First support block, 1772-Second support block, 181-First ball socket connector, 182-Second ball socket connector, 183-Second retainer, 190-Guide tube, 1000-Door system, 10000-Vehicle. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are only for explaining this application and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, not all structures. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0038] The terms "first," "second," and "third" in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0039] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0040] The actuator provided in this application includes: a drive assembly including a drive shaft; a transmission assembly including a transmission shaft, the transmission shaft being drively connected to the drive shaft and perpendicular to the drive shaft; a damping assembly arranged along the length direction of the drive shaft and connected to the end of the transmission shaft near the drive shaft; and an actuation assembly including a main shaft and a nut push tube, the main shaft having a screw portion and the nut push tube having a nut portion, the nut portion being screwed to the screw portion, such that the nut push tube is screwed to the main shaft, the main shaft being drively connected to the transmission shaft and parallel to the drive shaft, wherein the rotational motion of the main shaft can be converted into the linear reciprocating motion of the nut push tube. In the technical solution of this application, the main shaft being parallel to the drive shaft reduces the overall height of the actuator; furthermore, the transmission shaft being perpendicular to the drive shaft and the damping assembly being arranged along the length direction of the drive shaft and connected to the end of the transmission shaft near the drive shaft shortens the fixed length section of the actuator. In this way, the actuator has the advantages of short fixed length, small size and high adaptability.

[0041] Please refer to Figure 1-Figure 4 , Figure 1 This is a schematic diagram of the actuator provided in some embodiments of this application. Figure 2 yes Figure 1 A cross-sectional view of the actuator at AA. Figure 3 This is an exploded view of the actuator provided in some embodiments of this application. Figure 4 This is an exploded view of an actuator provided in other embodiments of this application. The actuator 100 provided in this application may include, but is not limited to, a drive assembly 110, a transmission assembly 120, a damping assembly 130, and an execution assembly 140. The drive assembly 110 is used to provide drive torque. The transmission assembly 120 is used to transmit the drive torque output by the drive assembly 110 to the execution assembly 140. The execution assembly 140 is used to convert the drive torque output by the drive assembly 110 into thrust or pull force to drive the external connection structure to perform a specific action. The damping assembly 130 is used to provide braking damping to the drive assembly 110, the transmission assembly 120, or the execution assembly 140, so that the execution assembly 140 can maintain a specific stroke or action. In this embodiment, the external connection structure is the tailgate of a vehicle. When the execution assembly 140 pushes the tailgate, it can open the tailgate relative to the vehicle body; when the execution assembly 140 pulls the tailgate, it can close the tailgate relative to the vehicle body. The damping assembly 130 can keep the tailgate suspended, thereby ensuring safety and preventing the tailgate from accidentally falling and causing a safety accident.

[0042] Further, the drive assembly 110 may include, but is not limited to, the drive shaft 111. The transmission assembly 120 may include, but is not limited to, the transmission shaft 121. The transmission shaft 121 is drive-connected to the drive shaft 111 and is perpendicular to the drive shaft 111. The damping assembly 130 is arranged along the length of the drive shaft 111 and connected to the end of the transmission shaft 121 near the drive shaft 111 to provide braking damping to the transmission shaft 121. The actuation assembly 140 may include, but is not limited to, a main shaft 141 and a nut push tube 142 screwed to the main shaft 141. The main shaft 141 has a screw portion 1411, and the nut push tube 142 has a nut portion 1421, which is screwed to the screw portion 1411, such that the nut push tube 142 is screwed to the main shaft 141. The main shaft 141 is drive-connected to the transmission shaft 121 and is parallel to the drive shaft 111. The driving torque of the drive shaft 111 is transmitted to the main shaft 141 via the transmission shaft 121, causing the main shaft 141 to rotate. This, in turn, causes the nut push tube 142, which is screwed to the main shaft 141, to reciprocate linearly. In other words, the rotational motion of the main shaft 141 can be converted into the linear reciprocating motion of the nut push tube 142. The length direction of the drive shaft 111 refers to its axial direction.

[0043] Understandably, the parallel arrangement of the main shaft 141 and the drive shaft 111 allows the overall length of the actuator 100 to be shorter compared to a configuration where the main shaft 141 and the drive shaft 111 are aligned in a straight line; the parallel arrangement of the main shaft 141 and the drive shaft 111 also allows the overall height of the actuator 100 to be lower compared to a configuration where the main shaft 141 and the drive shaft 111 intersect. Therefore, the parallel layout actuator 100 provided in this application has superior spatial arrangement performance compared to a linear or intersecting layout actuator, and can be adapted to more vehicle models. Here, the overall height of the actuator 100 refers to... Figure 1 The spatial length occupied by the actuator 100 in the Z-axis direction (excluding the lead wires of the drive assembly 110).

[0044] Specifically, along the length of the transmission shaft 121, the distance between the central axis of the main shaft 141 and the central axis of the drive shaft 111 is greater than or equal to 35 mm and less than or equal to 45 mm. Specifically, the distance between the central axis of the main shaft 141 and the central axis of the drive shaft 111 can be 35 mm, 35.6 mm, 36.8 mm, 37.2 mm, 37.9 mm, 38.6 mm, 39 mm, 39.8 mm, 40.5 mm, 41.1 mm, 41.8 mm, 42.7 mm, 43.5 mm, 44.3 mm, and 45 mm. In this embodiment, the distance between the central axis of the main shaft 141 and the central axis of the drive shaft 111 is 42.21 mm. The length direction of the transmission shaft 121 refers to its axial direction.

[0045] Understandably, the drive shaft 121 is perpendicular to the drive shaft 111, allowing the damping assembly 130 to be arranged along the length of the drive shaft 111 and connected to the end of the drive shaft 121 near the drive shaft 111. By connecting the damping assembly 130 to the end of the drive shaft 121 near the drive shaft 111, the fixed-length segment of the actuator 100 along the length of the main shaft 141 is shorter than the fixed-length segment of the damping assembly connected to the main shaft. This allows the nut push tube 142 to be designed with a larger stroke while maintaining the overall length of the actuator 100. Consequently, with a fixed installation space, the actuator 100 can provide a wider opening angle range for the vehicle tailgate to adapt to different usage scenarios or vehicle models. Here, the length direction of the main shaft 141 refers to the axial direction of the main shaft 141. The fixed-length segment refers to the segment along the length direction of the main shaft 141. Figure 1 In this application, the distance between the position of the nut push tube 142 when it is in the fully retracted state and the center axis of the ball socket of the first ball socket connector 181 can be replaced by the distance between the guide tube 190 and the center axis of the ball socket of the first ball socket connector 181.

[0046] Optionally, the drive component 110 can be an electric motor. In this embodiment, the drive shaft 111 is the output shaft of the motor.

[0047] Optionally, the damping component 130 can be a mechanical friction damper. The damping component 130 can be adapted and adjusted according to the braking damping required by the actuator 100.

[0048] Furthermore, the transmission assembly 120 also includes a first bevel gear 122, a second bevel gear 123, and a transmission wheel 124. The first bevel gear 122 is disposed on the drive shaft 111, and the second bevel gear 123 is disposed on the transmission shaft 121. The first bevel gear 122 and the second bevel gear 123 mesh, so that the transmission shaft 121 is drivenly connected to the drive shaft 111 and the transmission shaft 121 is perpendicular to the drive shaft 111. The transmission wheel 124 is drivenly connected to the transmission shaft 121. One end of the main shaft 141 passes through the transmission wheel 124 and is drivenly connected to the transmission wheel 124, so that the transmission wheel 124 can drive the main shaft 141 to rotate. Specifically, the transmission wheel 124 has a worm gear portion 1241, and the transmission shaft 121 has a worm portion 1211. The worm gear portion 1241 meshes with the worm portion 1211 to realize the drive connection between the transmission wheel 124 and the transmission shaft 121. The second bevel gear 123 is located between the worm gear portion 1241 and the damping assembly 130.

[0049] In this embodiment, due to the reverse self-locking function of the worm gear portion 1241 and the worm portion 1211, the damping assembly 130 can achieve the braking damping required inside the actuator 100 with fewer friction plates, thereby making the damping assembly 130 smaller in size.

[0050] Furthermore, since the damping assembly 130 has fewer friction plates, the resistance torque applied by the damping assembly 130 to the transmission shaft 121 is smaller. Therefore, the transmission ratio between the first bevel gear 122 and the second bevel gear 123 can be 1:1, so as to reduce the space occupied by the bevel gear transmission, improve the transmission efficiency, reduce energy loss, and thus transmit the driving force from the drive shaft 111 to the transmission shaft 121 more efficiently and stably.

[0051] Furthermore, the actuator 100 also includes a first bearing 126, a second bearing 143, and a third bearing 127. The first bearing 126 is sleeved on the drive shaft 121 and located between the worm gear portion 1211 and the second bevel gear 123 to provide radial support to the drive shaft 121, ensuring that the drive shaft 121 does not experience excessive radial offset during rotation, while also reducing friction and wear during rotation. The second bearing 143 is sleeved on the main shaft 141 and located between the drive wheel 124 and the nut push tube 142 to provide radial support to the main shaft 141. The third bearing 127 is sleeved on one end of the drive wheel 124 and is further away from the second bearing 143 relative to the worm gear portion 1241 to provide additional radial support to the drive wheel 124, ensuring the stability of the drive wheel 124 during transmission.

[0052] Furthermore, the actuator 100 also includes a housing assembly 170, a first ball-and-socket connector 181, and a second ball-and-socket connector 182. The housing assembly 170 has a receiving cavity 171. Parts of the actuation assembly 140, the drive assembly 110, the transmission assembly 120, and the damping assembly 130 are disposed in the receiving cavity 171. The first ball-and-socket connector 181 is arranged along the length of the main shaft 141 and is spaced apart from the end of the main shaft 141 near the transmission shaft 121. The second ball-and-socket connector 182 is arranged along the length of the main shaft 141 and is fixedly connected to the end of the nut push tube 142 away from the transmission shaft 121 (i.e., the end of the nut push tube 142 opposite to the first ball-and-socket connector 181). Parts of the first ball-and-socket connector 181 near the main shaft 141 are fixed inside the housing assembly 170. One of the first ball socket connector 181 and the second ball socket connector 182 is used to connect with the car door ball, and the other of the first ball socket connector 181 and the second ball socket connector 182 is used to connect with the car body ball.

[0053] Furthermore, the actuator 100 also includes a guide tube 190. At least a portion of the nut push tube 142 is located within the guide tube 190. The guide tube 190 guides the linear reciprocating motion of the nut push tube 142. One end of the guide tube 190 near the drive shaft 121 is fixed within the housing assembly 170.

[0054] Furthermore, along the length of the main shaft 141, the distance between the guide tube 190 and the central axis of the ball socket of the first ball socket connector 181 is greater than or equal to 50 mm and less than or equal to 60 mm. Specifically, the distance between the guide tube 190 and the central axis of the ball socket of the first ball socket connector 181 can be 50 mm, 51 mm, 52 mm, 53 mm, 54 mm, 55 mm, 56 mm, 57 mm, 58 mm, 59 mm, and 60 mm. In this embodiment, the distance between the guide tube 190 and the central axis of the ball socket of the first ball socket connector 181 is 53.7 mm.

[0055] Please refer to Figure 1-Figure 4 and Figure 9 , Figure 9 This is a schematic diagram of the structure of the adapter provided in some embodiments of this application. The transmission assembly 120 also includes an adapter 125. The adapter 125 is disposed between the transmission wheel 124 and the main shaft 141 to protect the main shaft 141. The outer wall of the adapter 125 is splinedly connected to the transmission wheel 124. The inner wall of the adapter 125 is splinedly connected to one end of the main shaft 141. Specifically, the outer wall of the adapter 125 has an outer spline 1251, and the inner wall of the adapter 125 has an inner spline 1252. The width of the outer spline 1251 is greater than the width of the inner spline 1252.

[0056] Optionally, the external spline 1251 can be a rectangular spline to better withstand torque and more effectively transmit the torque of the drive wheel 124 to the adapter 125, and then the torque is transmitted to the main shaft 141 through the adapter 125. The internal spline 1252 can be a triangular spline to ensure a more stable connection between the adapter 125 and the main shaft 141 during torque transmission, reducing offset or wobble during torque transmission.

[0057] In this embodiment, the adapter 125 is a flexible adapter 125 to better adapt to the transmission wheel 124 and main shaft 141 of different shapes and sizes. At the same time, it can also absorb shock and vibration to reduce the vibration and noise of the actuator 100 and improve the smoothness and reliability of the actuator 100.

[0058] Please refer to Figures 1-8 , Figure 5 These are schematic diagrams of the housing assembly provided in some embodiments of this application. Figure 6 This is an exploded view of the housing assembly provided in some embodiments of this application. Figure 7 This is a schematic diagram of the structure of the first housing provided in some embodiments of this application. Figure 8This is a schematic diagram of the structure of a second housing provided in some embodiments of this application. The housing assembly 170 may include, but is not limited to, a receiving cavity 171, a first housing 172, and a second housing 173. The receiving cavity 171 may include, but is not limited to, a transmission cavity 1711 and a drive cavity 1712. The drive cavity 1712 communicates with the transmission cavity 1711. A transmission assembly 120 is accommodated in the transmission cavity 1711. A drive assembly 110 is accommodated in the drive cavity 1712. The first housing 172 has a first groove 1721 and a second groove 1722. The first groove 1721 communicates with the second groove 1722. The second housing 173 has a third groove 1731 and a fourth groove 1732. The third groove 1731 communicates with the fourth groove 1732. The second housing 173 is fixed to the first housing 172, such that the first groove 1721 is opposite to the third groove 1731, and the second groove 1722 is opposite to the fourth groove 1732. The first groove 1721 and the third groove 1731 define the transmission cavity 1711. The second groove 1722 and the fourth groove 1732 define the drive cavity 1712.

[0059] Understandably, the first groove 1721 in the first housing 172 and the third groove 1731 in the second housing 173 form a transmission cavity 1711 for accommodating the transmission assembly 120, and the second groove 1722 in the first housing 172 and the fourth groove 1732 in the second housing 173 form a drive cavity 1712 for accommodating the drive assembly 110. This allows the transmission assembly 120 and the drive assembly 110 to be installed by first placing them in one of the first housing 172 and the second housing 173, and then closing the other housing. The disassembly process is the reverse. In this way, the housing assembly 170 facilitates the assembly and disassembly of the drive assembly 110 and the transmission assembly 120, thereby improving production efficiency and simplifying maintenance.

[0060] Furthermore, the housing assembly 170 also includes a first locking hole 1713 and a second locking hole 1714. The first locking hole 1713 is located on one side of the transmission cavity 1711 and communicates with the transmission cavity 1711. The fixed end of the first ball-and-socket connector 181 (i.e., the end of the first ball-and-socket connector 181 near the spindle 141) is engaged in the first locking hole 1713. The second locking hole 1714 is located on the other side of the transmission cavity 1711 and communicates with the transmission cavity 1711. The fixed end of the guide tube 190 (i.e., the end of the guide tube 190 near the first ball-and-socket connector 181) is engaged in the second locking hole 1714.

[0061] The first locking hole 1713 and the second locking hole 1714 are located on the same central axis. The transmission cavity 1711 is located between the first locking hole 1713 and the second locking hole 1714. In this way, the guide tube 190, nut push tube 142, main shaft 141, second bearing 143, third bearing 127 and first ball socket connector 181 and other related components can be positioned more accurately, making it easier for production and maintenance personnel to install, disassemble and repair related components.

[0062] Furthermore, the housing assembly 170 also includes a first retainer 174, a second retainer 183, and a first helical spring 160. The first retainer 174 is formed around the second latching hole 1714 on the first housing 172 and the second housing 173. A helical groove is provided on the outer peripheral side of the first retainer 174. A second ball-and-socket connector 182 passes through the second retainer 183. A helical groove is provided on the outer peripheral side of the second retainer 183. One end of the first helical spring 160 is fixed to the helical groove of the first retainer 174, and the other end of the first helical spring 160 is fixed to the helical groove of the second retainer 183. The restoring force of the first helical spring 160 causes the second retainer 183 to be fixed to the second ball-and-socket connector 182.

[0063] In this embodiment, the length direction of the drive cavity 1712 is parallel to the length direction of the guide tube 190 to accommodate the actuator with a parallel layout.

[0064] In some other embodiments, the length direction of the drive cavity 1712 intersects the length direction of the guide tube 190 to accommodate an actuator with an intersecting layout.

[0065] The length direction of the drive cavity 1712 refers to its axial direction. The length direction of the guide tube 190 refers to its axial direction.

[0066] Furthermore, the first housing 172 also includes a fifth groove 1723 and a sixth groove 1724. The fifth groove 1723 is located on one side of the first groove 1721 and communicates with the first groove 1721. The sixth groove 1724 is located on the other side of the first groove 1721 and communicates with the first groove 1721. The second housing 173 also includes a seventh groove 1733 and an eighth groove 1734. The seventh groove 1733 is located on one side of the third groove 1731 and communicates with the third groove 1731. The eighth groove 1734 is located on the other side of the third groove 1731 and communicates with the third groove 1731. The fifth groove 1723 and the seventh groove 1733 are opposite to each other and together define the first locking hole 1713. The sixth groove 1724 and the eighth groove 1734 are opposite to each other and together define the second locking hole 1714.

[0067] Furthermore, one of the second groove 1722 and the fourth groove 1732 is provided with a sealing strip 1751. The other of the second groove 1722 and the fourth groove 1732 is provided with a sealing groove 1752. The sealing strip 1751 is disposed in the sealing groove 1752 to improve the sealing performance of the drive cavity 1712.

[0068] In this embodiment, the fourth groove 1732 is provided with a sealing groove 1752, and the second groove 1722 is provided with a sealing strip 1751. When the first housing 172 and the second housing 173 are closed, the sealing strip 1751 of the second groove 1722 is embedded in the sealing groove 1752 of the fourth groove 1732 to improve the sealing performance of the drive cavity 1712.

[0069] Furthermore, one of the first groove 1721 and the third groove 1731 is provided with a plurality of positioning pins 1761. The other of the first groove 1721 and the third groove 1731 is provided with a plurality of positioning holes 1762. One of the second groove 1722 and the fourth groove 1732 is provided with a plurality of positioning pins 1761. The other of the second groove 1722 and the fourth groove 1732 is provided with a plurality of positioning holes 1762. The positioning pins 1761 are inserted into the positioning holes 1762. This method improves the assembly efficiency of the housing assembly 170, reduces production costs, and facilitates later maintenance and replacement. In this embodiment, the first groove 1721 is provided with a plurality of positioning holes 1762, the third groove 1731 is provided with a plurality of positioning pins 1761, the fourth groove 1732 is provided with a plurality of positioning pins 1761, and the second groove 1722 is provided with a plurality of positioning holes 1762.

[0070] Please refer to Figures 1-11 , Figure 10 This is a schematic diagram of the structure of a gap elimination component provided in some embodiments of this application. Figure 11 This is an exploded view of a backlash elimination assembly provided in some embodiments of this application. The actuator 100 also includes a backlash elimination assembly 150. The backlash elimination assembly 150 is disposed at the end of the drive shaft 121 away from the damping assembly 130 (i.e., one end of the drive shaft 121 passes through the backlash elimination assembly 150). The backlash elimination assembly 150 is used to automatically eliminate the meshing backlash between the worm portion 1241 and the worm wheel portion 1211, ensuring that the meshing backlash between the worm wheel portion 1241 and the worm portion 1211 is always maintained at a suitable size, thereby improving transmission efficiency and reducing noise.

[0071] Furthermore, the transmission cavity 1711 is provided with a first receiving cavity 1711a. The gap elimination assembly 150 is received in the first receiving cavity 1711a. The transmission cavity 1711 is also provided with a second receiving cavity 1711b. The second receiving cavity 1711b is spaced apart from the first receiving cavity 1711a. The first bearing 126 is received in the second receiving cavity 1711b. The other end of the transmission shaft 121 passes through the first bearing 126.

[0072] Furthermore, both the first receiving cavity 1711a and the second receiving cavity 1711b have ribs 1711c on their sidewalls. The gap elimination assembly 150 abuts against the rib 1711c of the first receiving cavity 1711a, and the rib 1711c serves as a mounting guide and a sliding guide for the gap elimination assembly 150. The first bearing 126 abuts against the rib 1711c of the second receiving cavity 1711b, and the rib 1711c serves as a mounting guide and a sliding guide for the first bearing 126.

[0073] Furthermore, the housing assembly 170 also includes a first support block 1771 and a second support block 1772. The first support and the second support block 1772 are spaced apart and opposite each other. The first support block 1771 supports and limits the gap elimination assembly 150. The second support block 1772 supports and limits the first bearing 126.

[0074] Furthermore, the backlash elimination assembly 150 may include, but is not limited to, a mounting base 151 and a plurality of second helical springs 152. The end face of the mounting base 151 has a plurality of receiving holes 1511. The second helical springs 152 are disposed in the receiving holes 1511. The side of the mounting base 151 has support holes 1512. One end of the drive shaft 121 passes through the support hole 1512. The second helical springs 152 are pre-compressed between the bottom wall of the first receiving cavity 1711a and the bottom wall of the receiving hole 1511. In this way, the second helical springs 152 can apply continuous pressure to the worm portion 1211, keeping the meshing clearance between the worm wheel portion 1241 and the worm portion 1211 within a suitable range, thereby avoiding excessive meshing clearance due to wear or improper installation, which would lead to reduced transmission efficiency and noise.

[0075] In this embodiment, the bottom wall of the first receiving cavity 1711a is also provided with a plurality of limiting holes 1715. The second helical spring 152 is pre-compressed between the limiting holes 1715 and the receiving holes 1511.

[0076] Furthermore, the mounting base 151 has an elastic block 1513 on its side facing away from the drive shaft 121. One end of the elastic block 1513 is fixed to the mounting base 151. The other end of the elastic block 1513 is a free end. The elastic block 1513 can abut against the side wall of the first receiving cavity 1711a through elastic deformation, so that the gap elimination assembly 150 can still be securely fixed in the first receiving cavity 1711a during the adjustment of the meshing gap.

[0077] The actuator 100 provided in this application includes: a drive assembly 110, including a drive shaft 111; a transmission assembly 120, including a transmission shaft 121, which is drively connected to the drive shaft 111 and perpendicular to the drive shaft 111; a damping assembly 130, which is arranged along the length of the drive shaft 111 and connected to one end of the transmission shaft 121 near the drive shaft 111; and an actuation assembly 140, including a main shaft 141 and a nut push tube 142. The main shaft 141 has a screw portion 1411, and the nut push tube 142 has a nut portion 1421. The nut portion 1421 is screwed to the screw portion 1411, such that the nut push tube 142 is screwed to the main shaft 141. The main shaft 141 is drively connected to the transmission shaft 121 and parallel to the drive shaft 111, wherein the rotational motion of the main shaft 141 can be converted into the linear reciprocating motion of the nut push tube 142. In the technical solution of this application, the main shaft 141 is parallel to the drive shaft 111, which reduces the overall height of the actuator 100. Furthermore, the transmission shaft 121 is perpendicular to the drive shaft 111, and the damping assembly 130 is arranged along the length direction of the drive shaft 111 and connected to the end of the transmission shaft 121 near the drive shaft 111, which shortens the fixed length section of the actuator 100. In this way, the actuator 100 has the advantages of short fixed length, small size, and high adaptability.

[0078] Please see Figure 12 , Figure 12 This is a schematic diagram of the structure of a door system provided in some embodiments of this application. The door system 1000 may include, but is not limited to, the actuator 100.

[0079] Please see Figure 13 , Figure 13 This is a schematic diagram of the structure of a vehicle provided in some embodiments of this application. The vehicle 10000 may include, but is not limited to, the door system 1000.

[0080] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.

Claims

1. An actuator, characterized in that, include: Drive components, including drive shafts; A transmission assembly includes a drive shaft, which is throttlely connected to the drive shaft and is perpendicular to the drive shaft; A damping assembly is arranged along the length of the drive shaft and connected to one end of the transmission shaft near the drive shaft. An actuator includes a spindle and a nut push tube. The spindle has a screw portion, and the nut push tube has a nut portion. The nut portion is screwed to the screw portion, such that the nut push tube is screwed to the spindle. The spindle is drivenly connected to the transmission shaft and is parallel to the drive shaft. The rotational motion of the spindle can be converted into linear reciprocating motion of the nut push tube.

2. The actuator according to claim 1, characterized in that, The transmission assembly further includes a first bevel gear and a second bevel gear, the first bevel gear being disposed on the drive shaft and the second bevel gear being disposed on the transmission shaft, the first bevel gear meshing with the second bevel gear; The transmission assembly further includes a transmission wheel, the transmission wheel having a worm gear portion, and the transmission shaft having a worm portion, the worm portion of the transmission shaft meshing with the worm gear portion of the transmission wheel; One end of the main shaft passes through the transmission wheel and is connected to the transmission wheel in a transmission manner, wherein the transmission wheel can drive the main shaft to rotate; The second bevel gear is located between the worm gear portion and the damping assembly.

3. The actuator according to claim 2, characterized in that, The transmission ratio between the first bevel gear and the second bevel gear is 1:

1.

4. The actuator according to claim 2, characterized in that, The transmission assembly further includes an adapter, which is disposed between the transmission wheel and the main shaft. The outer wall of the adapter is splinedly connected to the transmission wheel, and the inner wall of the adapter is splinedly connected to one end of the main shaft.

5. The actuator according to claim 4, characterized in that, The adapter is a flexible adapter.

6. The actuator according to claim 4, characterized in that, The outer wall of the adapter has an external spline, and the inner wall of the adapter has an internal spline. The width of the external spline is greater than the width of the internal spline.

7. The actuator according to claim 6, characterized in that, The external spline is a rectangular spline, and the internal spline is a triangular spline.

8. The actuator according to claim 2, characterized in that, The actuator further includes a backlash elimination component, which is disposed at the end of the drive shaft away from the damping component. The backlash elimination component is used to automatically eliminate the meshing backlash between the worm gear portion and the worm wheel portion.

9. The actuator according to claim 2, characterized in that, The actuator further includes a first bearing, which is sleeved on the drive shaft and located between the worm gear portion and the second bevel gear.

10. The actuator according to claim 2, characterized in that, The actuator further includes a second bearing, which is sleeved on the main shaft and located between the transmission wheel and the nut push tube; The actuator also includes a third bearing, which is sleeved on one end of the transmission wheel and is further away from the second bearing relative to the worm gear portion.

11. The actuator according to claim 1, characterized in that, The actuator further includes a housing assembly having a receiving cavity, in which a portion of the actuation component, the drive component, the transmission component, and the damping component are disposed.

12. The actuator according to claim 11, characterized in that, The actuator further includes a first ball-and-socket connector and a second ball-and-socket connector. The first ball-and-socket connector is arranged along the length of the main shaft and is spaced apart from the end of the main shaft near the drive shaft. The second ball-and-socket connector is arranged along the length of the main shaft and is fixedly connected to the end of the nut push tube away from the drive shaft. The portion of the first ball-and-socket connector near the main shaft is fixed within the housing assembly.

13. The actuator according to claim 12, characterized in that, The actuator also includes a guide tube, at least a portion of the nut push tube is located within the guide tube, the guide tube is used to guide the linear reciprocating motion of the nut push tube, and one end of the guide tube near the drive shaft is fixed within the housing assembly.

14. The actuator according to claim 13, characterized in that, Along the length of the main shaft, the distance between the guide tube and the central axis of the ball socket of the first ball socket connector is greater than or equal to 50 mm and less than or equal to 60 mm.

15. The actuator according to claim 1, characterized in that, Along the length of the transmission shaft, the distance between the central axis of the main shaft and the central axis of the drive shaft is greater than or equal to 35 mm and less than or equal to 45 mm.

16. A vehicle door system, characterized in that, Includes the actuator as described in any one of claims 1-15.

17. A vehicle, characterized in that, Includes the door system as described in claim 16.

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