Actuator and vehicle

Abstract

The utility model discloses an actuator and a vehicle. The actuator comprises a shell assembly, a transmission assembly, a gap eliminating assembly, an execution assembly and a driving assembly, the shell assembly is provided with a transmission cavity and a driving cavity communicated with the transmission cavity, the transmission cavity is provided with a first containing cavity, the transmission assembly is arranged in the transmission cavity, and the transmission assembly comprises a transmission wheel and a transmission shaft in transmission connection with the transmission wheel; the transmission wheel is provided with a worm gear part, the transmission shaft is provided with a worm part, the worm gear part is meshed with the worm part, the gap eliminating assembly is contained in the first containing cavity, one end of the transmission shaft penetrates through the gap eliminating assembly, and at least part of the structure of the execution assembly is arranged in the transmission cavity. One end of the main shaft penetrates through the transmission wheel and is in transmission connection with the transmission wheel, and the driving assembly is arranged in the driving cavity and is in transmission connection with the transmission assembly. In this way, the actuator can ensure transmission efficiency and reduce noise.

Description

Technical Field

[0001] The present application relates to the field of automotive parts, and in particular to an actuator and a vehicle. Background Art

[0002] With the development of intelligent and comfortable vehicles, many cars are equipped with electric tailgates. Electric tailgates are generally opened and closed by electric struts. Current electric struts include linear electric struts, intersecting electric struts, and parallel electric struts. Among them, intersecting electric struts and parallel electric struts often use worm gear assemblies to achieve transmission. Existing electric struts have a large meshing gap between the worm gear and the worm gear due to wear during installation or use, resulting in reduced transmission efficiency and increased noise. Utility Model Content

[0003] The actuator and vehicle provided in the present application can solve the technical problem in the prior art that the meshing gap between the worm wheel and the worm is large due to wear during installation or use of the electric strut, thereby reducing transmission efficiency and increasing noise.

[0004] In order to solve the above technical problems, a technical solution adopted by the present application is as follows: an actuator is provided, the actuator comprising: a housing assembly having a transmission cavity and a drive cavity connected to the transmission cavity, the transmission cavity being provided with a first accommodating cavity; a transmission assembly arranged in the transmission cavity, the transmission assembly comprising a transmission wheel and a transmission shaft connected to the transmission wheel, the transmission wheel having a worm gear portion, the transmission shaft having a worm gear portion, the worm gear portion being meshed with the worm gear portion; a clearance elimination assembly accommodated in the first accommodating cavity, one end of the transmission shaft being passed through the clearance elimination cavity A gap elimination component, which is used to automatically eliminate the meshing gap between the worm wheel part of the transmission wheel and the worm part of the transmission shaft; an actuator component, at least part of which is arranged in the transmission cavity, and the actuator component includes a main shaft and a nut push tube threaded with the main shaft, one end of the main shaft is passed through the transmission wheel and is connected to the transmission wheel; a drive component, which is arranged in the drive cavity, and is connected to the transmission component to drive the main shaft to rotate, thereby converting the rotational motion of the main shaft into a linear reciprocating motion of the nut push tube.

[0005] In some embodiments, the transmission cavity is further provided with a second accommodating cavity spaced opposite to the first accommodating cavity, and the transmission assembly further includes a first bearing, the other end of the transmission shaft is passed through the first bearing, and the first bearing is accommodated in the second accommodating cavity.

[0006] In some embodiments, the housing assembly includes a first support block and a second support block spaced apart from the first support block, the first support block supports the gap elimination assembly, and the second support block supports the first bearing.

[0007] In some embodiments, the gap elimination assembly includes a mounting seat and a plurality of second coil springs, the end face of the mounting seat has a plurality of accommodating holes, the second coil springs are arranged in the accommodating holes, the side of the mounting seat has a support hole, one end of the transmission shaft is passed through the support hole, and the second coil spring is pre-pressed between the bottom wall of the first accommodating cavity and the bottom wall of the accommodating hole.

[0008] In some embodiments, a plurality of limiting holes are provided on the bottom wall of the first accommodating cavity, and the second coil spring is pre-compressed between the limiting holes and the accommodating hole.

[0009] In some embodiments, the mounting seat is provided with an elastic block on the side facing away from the transmission shaft, one end of the elastic block is fixed to the mounting seat, and the other end of the elastic block is a free end, and the elastic block can abut against the side wall of the first accommodating cavity through elastic deformation.

[0010] In some embodiments, the side walls of the first accommodating cavity and the second accommodating cavity are both provided with ribs, the gap elimination component abuts against the ribs of the first accommodating cavity, and the first bearing abuts against the ribs of the second accommodating cavity.

[0011] In some embodiments, the actuator further includes a first ball-and-socket connection member, the housing assembly includes a first latching hole communicating with the transmission cavity, and a fixed end of the first ball-and-socket connection member is fixed to the first latching hole.

[0012] In some embodiments, the actuator further includes: a second clamping hole, connected to the transmission cavity, the transmission cavity being located between the first clamping hole and the second clamping hole; a guide tube, sleeved on the nut push tube, the end of the guide tube close to the first ball and socket connector being fixed to the second clamping hole; a second ball and socket connector being fixed to the end of the nut push tube facing away from the first ball and socket connector.

[0013] Another technical solution adopted by the present application is: providing a vehicle, the vehicle comprising any one of the actuators described above.

[0014] The present application has the following beneficial effects: Different from the prior art, the actuator provided by the present application includes: a housing assembly having a transmission cavity and a drive cavity communicating with the transmission cavity, the transmission cavity being provided with a first accommodating cavity; a transmission assembly disposed in the transmission cavity, the transmission assembly including a transmission wheel and a transmission shaft transmission-connected to the transmission wheel, the transmission wheel having a worm gear portion, the transmission shaft having a worm gear portion, the worm gear portion meshing with the worm gear portion; a clearance elimination assembly accommodated in the first accommodating cavity, one end of the transmission shaft passing through the clearance elimination assembly, the clearance elimination assembly being used to automatically eliminate the meshing clearance between the worm gear portion of the transmission wheel and the worm gear portion of the transmission shaft; an actuator assembly, at least part of its structure disposed in the transmission cavity, the actuator assembly including a main shaft and a nut push tube threadedly connected to the main shaft, one end of the main shaft passing through the transmission wheel and transmission-connected to the transmission wheel; a drive assembly disposed in the drive cavity, the drive assembly transmission-connected to the transmission assembly to drive the main shaft to rotate, thereby converting the rotational motion of the main shaft into linear reciprocating motion of the nut push tube. In the technical solution of this application, the worm gear portion of the transmission wheel meshes with the worm portion of the transmission shaft, and one end of the transmission shaft is inserted into the clearance elimination assembly, so that the meshing clearance between the worm gear portion and the worm portion is always maintained at an appropriate size. In this way, the actuator can maintain the meshing clearance between the worm gear portion and the worm portion at an appropriate size, thereby ensuring transmission efficiency and reducing noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 is a schematic structural diagram of an actuator provided in some embodiments of the present application;

[0017] Figure 2 yes Figure 1 A cross-sectional view of the actuator at AA;

[0018] Figure 3 is an exploded schematic diagram of an actuator provided in some embodiments of the present application;

[0019] Figure 4 is an exploded schematic diagram of an actuator provided in some other embodiments of the present application;

[0020] Figure 5 is a schematic structural diagram of a housing assembly provided in some embodiments of the present application;

[0021] Figure 6 is an exploded schematic diagram of a housing assembly provided in some embodiments of the present application;

[0022] Figure 7 is a structural schematic diagram of a first housing provided in some embodiments of the present application;

[0023] Figure 8 is a schematic structural diagram of a second housing provided in some embodiments of the present application;

[0024] Figure 9 is a schematic structural diagram of an adapter provided in some embodiments of the present application;

[0025] Figure 10 is a schematic structural diagram of a gap elimination assembly provided in some embodiments of the present application;

[0026] Figure 11 is an exploded schematic diagram of a gap elimination assembly provided in some embodiments of the present application;

[0027] Figure 12 is a schematic structural diagram of a vehicle door system provided by some embodiments of the present application;

[0028] Figure 13 It is a schematic structural diagram of a vehicle provided in some embodiments of the present application.

[0029] Explanation of reference numerals: 100 - actuator, 110 - drive assembly, 111 - drive shaft, 120 - transmission assembly, 121 - transmission shaft, 1211 - worm portion, 122 - first bevel gear, 123 - second bevel gear, 124 - transmission wheel, 1241 - worm gear portion, 125 - adapter, 1251 - external spline, 1252 - internal spline, 126 - first bearing, 127 - third bearing, 130 - damping assembly , 140-actuator assembly, 141-spindle, 1411-screw part, 142-nut push tube, 1421-nut part, 143-second bearing, 150-gap elimination assembly, 151-mounting seat, 1511-accommodation hole, 1512-support hole, 1513-elastic block, 152-second coil spring, 160-first coil spring, 170-housing assembly, 171-accommodation chamber, 1711-transmission chamber, 1711a-first accommodating cavity, 1711b-second accommodating cavity, 1711c-rib, 1712-driving cavity, 1713-first clamping hole, 1714-second clamping hole, 1715-limiting hole, 172-first shell, 1721-first groove, 1722-second groove, 1723-fifth groove, 1724-sixth groove, 173-second shell, 1731-third groove, 1732-fourth groove, 1733-seventh groove, 1734-eighth groove, 174-first retaining frame, 1751-sealing strip, 1752-sealing groove, 1761-locating pin, 1762-locating hole, 1771-first support block, 1772-second support block, 181-first ball and socket connection, 182-second ball and socket connection, 183-second retaining frame, 190-guide tube, 1000-door system, 10000-vehicle. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It will be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some, rather than all, structures related to the present application are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] The terms "first," "second," and "third" in this application are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of such features. In the description of this application, "multiple" means at least two, for example, two, three, etc., unless otherwise specifically defined. All directional indications in the embodiments of this application (such as up, down, left, right, front, back...) are only used to explain the relative positional relationship, movement, etc. between the components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications also change accordingly. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. 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 that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products, or devices.

[0032] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] The actuator provided by the present application includes: a housing assembly having a transmission cavity and a drive cavity connected to the transmission cavity, the transmission cavity being provided with a first accommodating cavity; a transmission assembly disposed in the transmission cavity, the transmission assembly including a transmission wheel and a transmission shaft connected to the transmission wheel, the transmission wheel having a worm gear portion, the transmission shaft having a worm gear portion, the worm gear portion meshing with the worm gear portion; a clearance elimination assembly accommodated in the first accommodating cavity, one end of the transmission shaft passing through the clearance elimination assembly, the clearance elimination assembly being used to automatically eliminate the meshing clearance between the worm gear portion of the transmission wheel and the worm gear portion of the transmission shaft; an actuator assembly, at least part of its structure disposed in the transmission cavity, the actuator assembly including a main shaft and a nut push tube threadedly connected to the main shaft, one end of the main shaft passing through the transmission wheel and connected to the transmission wheel; a drive assembly disposed in the drive cavity, the drive assembly being connected to the transmission assembly to drive the main shaft to rotate, thereby converting the rotational motion of the main shaft into linear reciprocating motion of the nut push tube. In the technical solution of this application, the worm gear portion of the transmission wheel meshes with the worm portion of the transmission shaft, and one end of the transmission shaft is inserted into the clearance elimination assembly, so that the meshing clearance between the worm gear portion and the worm portion is always maintained at an appropriate size. In this way, the actuator can maintain the meshing clearance between the worm gear portion and the worm portion at an appropriate size, thereby ensuring transmission efficiency and reducing noise.

[0034] Please refer to Figure 1-Figure 4 , Figure 1 is a schematic structural diagram of an actuator provided in some embodiments of the present application, Figure 2 yes Figure 1 The cross-sectional view of the actuator at AA, Figure 3 is an exploded schematic diagram of an actuator provided in some embodiments of the present application, Figure 41 is an exploded schematic diagram of an actuator provided in other embodiments of the present 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 actuator 140. The drive assembly 110 is used to provide driving torque. The transmission assembly 120 is used to transmit the driving torque output by the drive assembly 110 to the actuator 140. The actuator 140 is used to convert the driving torque output by the drive assembly 110 into thrust or tension to drive an external connection structure to perform a specific action. The damping assembly 130 is used to provide braking damping to the drive assembly 110, transmission assembly 120, or actuator 140, so that the actuator 140 can maintain a specific travel or movement. In this embodiment, the external connection structure is a vehicle's tailgate. When the actuator 140 pushes the tailgate, the tailgate opens relative to the vehicle body, and when the actuator 140 pulls the tailgate, the tailgate closes relative to the vehicle body. The damping assembly 130 keeps the tailgate suspended, ensuring safety and preventing accidents caused by the tailgate accidentally falling.

[0035] Furthermore, the drive assembly 110 may include but is not limited to a drive shaft 111. The transmission assembly 120 may include but is not limited to a transmission shaft 121. The transmission shaft 121 is in transmission connection with the drive shaft 111 and is perpendicular to the drive shaft 111. The damping assembly 130 is arranged along the length direction of the drive shaft 111 and is connected to one end of the transmission shaft 121 close to the drive shaft 111 to provide braking damping for the transmission shaft 121. The actuator assembly 140 may include but is not limited to a main shaft 141 and a nut push tube 142 threadedly connected 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. The nut portion 1421 is threadedly connected to the screw portion 1411, so that the nut push tube 142 is threadedly connected to the main shaft 141. The main shaft 141 is in transmission connection with 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, which in turn causes the nut push tube 142, which is threadedly connected to the main shaft 141, to move back and forth linearly. In other words, the rotational motion of the main shaft 141 is converted into the linear reciprocating motion of the nut push tube 142. The length direction of the drive shaft 111 refers to the axial direction of the drive shaft 111.

[0036] It can be understood that the parallel arrangement of the main shaft 141 and the drive shaft 111 can make the overall length of the actuator 100 shorter than that of the main shaft 141 and the drive shaft 111 arranged in the same straight line; the parallel arrangement of the main shaft 141 and the drive shaft 111 can make the overall height of the actuator 100 lower than that of the main shaft 141 and the drive shaft 111 arranged intersectingly; therefore, the parallel arrangement of the actuator 100 provided in this application has better spatial arrangement performance than that of the linear arrangement or the intersecting arrangement, and can be adapted to more vehicle models. Among them, the overall height of the actuator 100 refers to Figure 1 The length of the space occupied by the actuator 100 in the Z-axis direction (excluding the lead wires of the driving component 110).

[0037] Specifically, in the length direction 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 the axial direction of the transmission shaft 121.

[0038] It can be understood that the transmission shaft 121 is perpendicular to the drive shaft 111, so that the damping assembly 130 can be arranged along the length direction of the drive shaft 111 and connected to the end of the transmission shaft 121 close to the drive shaft 111. By connecting the damping assembly 130 to the end of the transmission shaft 121 close to the drive shaft 111, the fixed length section of the actuator 100 along the length direction of the main shaft 141 is shorter than the fixed length section of the damping assembly connected to the main shaft, so that when the overall length of the actuator 100 remains unchanged, the nut push tube 142 can be designed with a larger stroke, and then when the installation space is certain, the actuator 100 can make the vehicle tailgate have a larger opening angle range to adapt to the needs of different usage scenarios or different models. Among them, the length direction of the main shaft 141 refers to the axial direction of the main shaft 141. The fixed length section refers to the length direction of the main shaft 141 ( Figure 1 In the Y-axis direction), the distance between the position of the nut push tube 142 when it is in a 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 in the present application.

[0039] Optionally, the drive assembly 110 may be an electric motor. In this embodiment, the drive shaft 111 is the output shaft of the motor.

[0040] Optionally, the damping assembly 130 may be a mechanical friction damper, wherein the damping assembly 130 may be adapted and adjusted according to the braking damping required by the actuator 100 .

[0041] 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 arranged on the drive shaft 111, and the second bevel gear 123 is arranged on the transmission shaft 121. The first bevel gear 122 is meshed with the second bevel gear 123 so that the transmission shaft 121 is transmission-connected to the drive shaft 111 and the transmission shaft 121 is perpendicular to the drive shaft 111. The transmission wheel 124 is transmission-connected to the transmission shaft 121. One end of the main shaft 141 is passed through the transmission wheel 124 and is transmission-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 achieve transmission connection between the transmission wheel 124 and the transmission shaft 121. The second bevel gear 123 is located between the worm portion 1241 and the damping assembly 130 .

[0042] 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 required braking damping inside the actuator 100 with fewer friction plates, thereby making the volume of the damping assembly 130 smaller.

[0043] Furthermore, due to the small number of friction plates in the damping assembly 130, the resistance torque applied by the damping assembly 130 to the transmission shaft 121 is small. Therefore, the transmission ratio between the first bevel gear 122 and the second bevel gear 123 can be 1:1, thereby reducing the space occupied by the bevel gear transmission, improving transmission efficiency, reducing energy loss, and thus more efficiently and stably transmitting the driving force from the drive shaft 111 to the transmission shaft 121.

[0044] 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 transmission shaft 121 and is located between the worm portion 1211 and the second bevel gear 123 to provide radial support for the transmission shaft 121, ensuring that the transmission shaft 121 does not have excessive radial deviation during rotation, while reducing friction and wear of the transmission shaft 121 during rotation. The second bearing 143 is sleeved on the main shaft 141 and is located between the transmission wheel 124 and the nut push tube 142 to provide radial support for the main shaft 141. The third bearing 127 is sleeved on one end of the transmission wheel 124 and is further away from the second bearing 143 relative to the worm gear portion 1241 to provide additional radial support for the transmission wheel 124 and ensure the stability of the transmission wheel 124 during transmission.

[0045] 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 is provided with an accommodating chamber 171. Part of the structure of the actuator assembly 140, the drive assembly 110, the transmission assembly 120, and the damping assembly 130 are arranged in the accommodating chamber 171. The first ball-and-socket connector 181 is arranged along the length direction of the main shaft 141 and is spaced opposite to the end of the main shaft 141 close to the transmission shaft 121. The second ball-and-socket connector 182 is arranged along the length direction of the main shaft 141 and is fixedly connected to the end of the nut push tube 142 away from the transmission shaft 121 (that is, the end of the nut push tube 142 facing away from the first ball-and-socket connector 181). Part of the structure of the first ball-and-socket connector 181 close to the main shaft 141 is fixed in the housing assembly 170. One of the first ball-and-socket connector 181 and the second ball-and-socket connector 182 is used to connect to a door ball, and the other of the first ball-and-socket connector 181 and the second ball-and-socket connector 182 is used to connect to a vehicle body ball.

[0046] Furthermore, the actuator 100 includes a guide tube 190. At least a portion of the structure of the nut push tube 142 is located within the guide tube 190. The guide tube 190 is used to guide the linear reciprocating motion of the nut push tube 142. One end of the guide tube 190, which is close to the transmission shaft 121, is fixed within the housing assembly 170.

[0047] Furthermore, along the length direction of the main shaft 141, the distance between the guide tube 190 and the central axis of the ball socket of the first ball-and-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-and-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, or 60 mm. In this embodiment, the distance between the guide tube 190 and the central axis of the ball socket of the first ball-and-socket connector 181 is 53.7 mm.

[0048] Please refer to Figure 1-Figure 4 and Figure 9 , Figure 9 1 is a schematic diagram of the structure of the adapter provided in some embodiments of the present application. The transmission assembly 120 also includes an adapter 125. The adapter 125 is arranged between the transmission wheel 124 and the main shaft 141 to protect the main shaft 141. The outer wall of the adapter 125 is spline-connected to the transmission wheel 124. The inner wall of the adapter 125 is spline-connected to one end of the main shaft 141. Specifically, the outer wall of the adapter 125 has an external spline 1251, and the inner wall of the adapter 125 has an internal spline 1252. The width of the external spline 1251 is greater than the width of the internal spline 1252.

[0049] Optionally, the outer splines 1251 may be rectangular splines to better withstand torque and more effectively transmit the torque of the transmission wheel 124 to the adapter 125, which then transmits the torque to the main shaft 141 through the adapter 125. The inner splines 1252 may be triangular splines to ensure a more stable connection between the adapter 125 and the main shaft 141 during torque transmission, thereby reducing offset or shaking during torque transmission.

[0050] In this embodiment, the adapter 125 is a flexible adapter 125 to better adapt to the transmission wheels 124 and the main shaft 141 of different shapes and sizes. At the same time, it can also absorb impact and vibration to reduce the vibration and noise of the actuator 100 and improve the stability and reliability of the actuator 100.

[0051] Please refer to Figures 1-8 , Figure 5 is a schematic structural diagram of a housing assembly provided in some embodiments of the present application. Figure 6 is an exploded schematic diagram of a housing assembly provided in some embodiments of the present application. Figure 7 is a structural diagram of the first shell provided in some embodiments of the present application, Figure 8Schematic diagram of the structure of the second housing provided in some embodiments of the present application. Housing assembly 170 may include, but is not limited to, a housing chamber 171, a first housing 172, and a second housing 173. Housing chamber 171 may include, but is not limited to, a transmission chamber 1711 and a drive chamber 1712. Drive chamber 1712 communicates with transmission chamber 1711. Transmission assembly 120 is accommodated in transmission chamber 1711. Drive assembly 110 is accommodated in drive chamber 1712. First housing 172 has a first groove 1721 and a second groove 1722. First groove 1721 communicates with second groove 1722. Second housing 173 has a third groove 1731 and a fourth groove 1732. Third groove 1731 communicates with fourth groove 1732. Second housing 173 is fixed to first housing 172 such that first groove 1721 opposes third groove 1731, and second groove 1722 opposes fourth groove 1732. First groove 1721 and third groove 1731 define transmission chamber 1711. The second groove 1722 and the fourth groove 1732 define the driving cavity 1712 .

[0052] It can be understood that 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, so that the transmission assembly 120 and the drive assembly 110 are first placed in one of the first housing 172 and the second housing 173, and then the other of the first housing 172 and the second housing 173 is closed to complete the installation of the transmission assembly 120 and the drive assembly 110, and the disassembly process is the opposite. 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 facilitating maintenance.

[0053] Furthermore, the housing assembly 170 also includes a first latching hole 1713 and a second latching hole 1714. The first latching hole 1713 is located on one side of the transmission cavity 1711 and is in communication 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 that is close to the main shaft 141) is engaged with the first latching hole 1713. The second latching hole 1714 is located on the other side of the transmission cavity 1711 and is in communication with the transmission cavity 1711. The fixed end of the guide tube 190 (i.e., the end of the guide tube 190 that is close to the first ball-and-socket connector 181) is engaged with the second latching hole 1714.

[0054] The first engaging hole 1713 and the second engaging hole 1714 are located on the same central axis. The transmission cavity 1711 is located between the first engaging hole 1713 and the second engaging hole 1714. This method allows for more accurate positioning of related components such as the guide tube 190, nut push tube 142, main shaft 141, second bearing 143, third bearing 127, and first ball-and-socket connector 181, making it easier for production and maintenance personnel to install, disassemble, and repair related components.

[0055] Furthermore, the housing assembly 170 also includes a first retaining frame 174, a second retaining frame 183, and a first coil spring 160. The first retaining frame 174 is formed on the first housing 172 and the second housing 173 around the second retaining hole 1714. A spiral groove is provided on the outer circumference of the first retaining frame 174. The second ball-and-socket connector 182 is provided through the second retaining frame 183. A spiral groove is provided on the outer circumference of the second retaining frame 183. One end of the first coil spring 160 is fixed to the spiral groove of the first retaining frame 174, and the other end of the first coil spring 160 is fixed to the spiral groove of the second retaining frame 183. The restoring force of the first coil spring 160 fixes the second retaining frame 183 to the second ball-and-socket connector 182.

[0056] In this embodiment, the length direction of the driving cavity 1712 is parallel to the length direction of the guide tube 190 to adapt to the actuator with a parallel layout.

[0057] In some other embodiments, the length direction of the driving cavity 1712 intersects with the length direction of the guide tube 190 to adapt to an actuator with an intersecting layout.

[0058] The length direction of the driving cavity 1712 refers to the axial direction of the driving cavity 1712. The length direction of the guide tube 190 refers to the axial direction of the guide tube 190.

[0059] 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 engaging hole 1713. The sixth groove 1724 and the eighth groove 1734 are opposite to each other and together define the second engaging hole 1714.

[0060] 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 driving chamber 1712.

[0061] 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 covered, 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 driving chamber 1712.

[0062] 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. In this way, the assembly efficiency of the housing assembly 170 can be improved, the production cost can be reduced, and later maintenance and replacement can be facilitated. 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, and the fourth groove 1732 is provided with a plurality of positioning pins 1761. The second groove 1722 is provided with a plurality of positioning holes 1762.

[0063] Please refer to Figures 1-11 , Figure 10 is a schematic structural diagram of a gap elimination assembly provided in some embodiments of the present application, Figure 11 1 is a schematic diagram of an exploded view of a clearance elimination assembly provided in some embodiments of the present application. The actuator 100 also includes a clearance elimination assembly 150. The clearance elimination assembly 150 is disposed at the end of the transmission shaft 121 away from the damping assembly 130 (i.e., one end of the transmission shaft 121 is passed through the clearance elimination assembly 150). The clearance elimination assembly 150 is used to automatically eliminate the meshing clearance between the worm portion 1241 and the worm wheel portion 1211, so that the meshing clearance between the worm wheel portion 1241 and the worm portion 1211 always maintains an appropriate size, thereby improving transmission efficiency and reducing noise.

[0064] Furthermore, the transmission chamber 1711 has a first accommodating chamber 1711a. The clearance elimination assembly 150 is accommodated in the first accommodating chamber 1711a. The transmission chamber 1711 also has a second accommodating chamber 1711b. The second accommodating chamber 1711b is spaced apart from and opposite to the first accommodating chamber 1711a. The first bearing 126 is accommodated in the second accommodating chamber 1711b. The other end of the transmission shaft 121 passes through the first bearing 126.

[0065] Furthermore, ribs 1711c are provided on the sidewalls of both the first and second accommodating cavities 1711a, 1711b. The clearance eliminating assembly 150 abuts against the ribs 1711c of the first accommodating cavity 1711a, providing both installation and sliding guidance for the clearance eliminating assembly 150. The first bearing 126 abuts against the ribs 1711c of the second accommodating cavity 1711b, providing both installation and sliding guidance for the first bearing 126.

[0066] Furthermore, the housing assembly 170 further includes a first support block 1771 and a second support block 1772. The first support block 1771 supports and positions the gap elimination assembly 150, while the second support block 1772 supports and positions the first bearing 126.

[0067] Furthermore, the gap elimination assembly 150 may include but is not limited to a mounting seat 151 and a plurality of second coil springs 152. The end face of the mounting seat 151 has a plurality of accommodating holes 1511. The second coil spring 152 is disposed in the accommodating hole 1511. The side of the mounting seat 151 has a support hole 1512. One end of the transmission shaft 121 is passed through the support hole 1512. The second coil spring 152 is pre-pressed between the bottom wall of the first accommodating cavity 1711a and the bottom wall of the accommodating hole 1511. In this way, the second coil spring 152 can exert continuous pressure on the worm portion 1211, so that the meshing clearance between the worm wheel portion 1241 and the worm portion 1211 is maintained within an appropriate range, thereby avoiding excessive meshing clearance due to wear or improper installation, which in turn leads to reduced transmission efficiency and noise.

[0068] In this embodiment, the bottom wall of the first accommodating cavity 1711 a is further provided with a plurality of limiting holes 1715 . The second coil spring 152 is pre-compressed between the limiting holes 1715 and the accommodating hole 1511 .

[0069] Furthermore, an elastic block 1513 is provided on the side of the mounting base 151 facing away from the transmission 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 free. The elastic block 1513 can elastically deform to abut against the sidewall of the first accommodating cavity 1711a, allowing the clearance elimination assembly 150 to remain securely fixed to the first accommodating cavity 1711a during the process of adjusting the meshing clearance.

[0070] The actuator 100 provided in the present application includes: a housing assembly 170, having a transmission cavity 1711 and a drive cavity 1712 connected to the transmission cavity 1711, wherein the transmission cavity 1711 is provided with a first accommodating cavity 1711a; a transmission assembly 120, disposed in the transmission cavity 1711, comprising a transmission wheel 124 and a transmission shaft 121 connected to the transmission wheel 124, wherein the transmission wheel 124 has a worm gear portion 1241, and the transmission shaft 121 has a worm portion 1211, wherein the worm gear portion 1241 is meshed with the worm portion 1211; a clearance elimination assembly 150, accommodated in the first accommodating cavity 1711a, wherein one end of the transmission shaft 121 is passed through the clearance elimination assembly 150. 0, the gap elimination component 150 is used to automatically eliminate the meshing gap between the worm wheel part 1241 of the transmission wheel 124 and the worm part 1211 of the transmission shaft 121; the actuator component 140, at least part of its structure is arranged in the transmission cavity 1711, the actuator component 140 includes a main shaft 141 and a nut push tube 142 threadedly connected to the main shaft 141, one end of the main shaft 141 is passed through the transmission wheel 124 and is in transmission connection with the transmission wheel 124; the driving component 110 is arranged in the driving cavity 1712, the driving component 110 is in transmission connection with the transmission component 120 to drive the main shaft 141 to rotate, and then convert the rotational motion of the main shaft 141 into linear reciprocating motion of the nut push tube 142. In the technical solution of the present application, the worm gear portion 1241 of the transmission wheel 124 meshes with the worm portion 1211 of the transmission shaft 121, and one end of the transmission shaft 121 is passed through the clearance elimination assembly 150, so that the meshing clearance between the worm gear portion 1241 and the worm portion 1211 is always maintained at an appropriate size. In this way, the actuator 100 can always maintain the meshing clearance between the worm gear portion 1241 and the worm portion 1211 at an appropriate size, thereby ensuring transmission efficiency and reducing noise.

[0071] See also Figure 12 , Figure 12 FIG1 is a schematic diagram of a vehicle door system according to some embodiments of the present application. The vehicle door system 1000 may include but is not limited to an actuator 100 .

[0072] See also Figure 13 , Figure 13 FIG1 is a schematic diagram of a vehicle structure according to some embodiments of the present application. The vehicle 10000 may include but is not limited to a door system 1000.

[0073] The above descriptions are only some embodiments of the present application and do not limit the scope of protection of the present application. Any equivalent device or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of this application.

Claims

1. An actuator, characterized in that: include: The housing assembly comprises a transmission cavity and a driving cavity communicating with the transmission cavity, wherein the transmission cavity is provided with a first accommodating cavity; a transmission assembly disposed in the transmission cavity, the transmission assembly comprising a transmission wheel and a transmission shaft in transmission connection with the transmission wheel, the transmission wheel having a worm wheel portion, the transmission shaft having a worm portion, the worm wheel portion meshing with the worm portion; a clearance eliminating component housed in the first housing cavity, one end of the transmission shaft passing through the clearance eliminating component, the clearance eliminating component being used to automatically eliminate the meshing clearance between the worm wheel portion of the transmission wheel and the worm portion of the transmission shaft; An actuator assembly, at least part of which is disposed in the transmission chamber, comprising a main shaft and a nut push tube threadedly connected to the main shaft, one end of the main shaft passing through the transmission wheel and in transmission connection with the transmission wheel; A driving assembly is disposed in the driving cavity and is in driving connection with the transmission assembly to drive the main shaft to rotate, thereby converting the rotational motion of the main shaft into a linear reciprocating motion of the nut push tube.

2. The actuator according to claim 1, characterized in that The transmission cavity is further provided with a second accommodating cavity spaced opposite to the first accommodating cavity. The transmission assembly further comprises a first bearing. The other end of the transmission shaft passes through the first bearing, and the first bearing is accommodated in the second accommodating cavity.

3. The actuator according to claim 2, characterized in that The housing assembly includes a first support block and a second support block spaced apart from the first support block, the first support block supports the gap elimination assembly, and the second support block supports the first bearing.

4. The actuator according to claim 3, characterized in that The gap elimination assembly includes a mounting seat and a plurality of second coil springs. The end face of the mounting seat has a plurality of accommodating holes. The second coil springs are arranged in the accommodating holes. The side face of the mounting seat has a support hole. One end of the transmission shaft is passed through the support hole. The second coil springs are pre-pressed between the bottom wall of the first accommodating cavity and the bottom wall of the accommodating hole.

5. The actuator according to claim 4, characterized in that The bottom wall of the first accommodating cavity is provided with a plurality of limiting holes, and the second coil spring is pre-pressed between the limiting holes and the accommodating hole.

6. The actuator according to claim 4, characterized in that The mounting seat is provided with an elastic block on the side facing away from the transmission shaft. One end of the elastic block is fixed to the mounting seat, and the other end of the elastic block is a free end. The elastic block can abut against the side wall of the first accommodating cavity through elastic deformation.

7. The actuator according to claim 2, characterized in that The side walls of the first accommodating cavity and the second accommodating cavity are both provided with ribs, the gap elimination component abuts against the ribs of the first accommodating cavity, and the first bearing abuts against the ribs of the second accommodating cavity.

8. The actuator according to claim 1, wherein: The actuator further includes a first ball-and-socket connection member, the housing assembly includes a first clamping hole communicating with the transmission cavity, and a fixed end of the first ball-and-socket connection member is fixed to the first clamping hole.

9. The actuator according to claim 8, characterized in that The actuator further comprises: a second clamping hole, communicating with the transmission cavity, wherein the transmission cavity is located between the first clamping hole and the second clamping hole; a guide tube, sleeved on the nut push tube, wherein one end of the guide tube close to the first ball-and-socket connector is fixed to the second clamping hole; The second ball-and-socket connecting piece is fixed to an end of the nut push tube facing away from the first ball-and-socket connecting piece.

10. A vehicle, characterized in that: Comprising the actuator according to any one of claims 1-9.

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