An electric push rod and tent

Abstract

The embodiment of the present application provides an electric push rod and a tent, the electric push rod comprising a base, a motor assembly, a lead screw and a connecting assembly. The motor assembly is arranged on the base. The lead screw is connected with an output end of the motor assembly, and the motor assembly is used for driving the lead screw to rotate. The connecting assembly is movably arranged on the base, and the connecting assembly is screwedly connected with the lead screw and is used for converting the rotation of the lead screw into the linear motion of the connecting assembly. The connecting assembly is used for being connected to an object. The base is used for providing support for the motor assembly and the connecting assembly. When the electric push rod needs to be used, the base is directly fixed to equipment needing to use the electric push rod, so that the connecting assembly is connected to the object needing to move linearly. When the electric push rod needs to be disassembled, the base only needs to be disassembled, and the connection between the connecting assembly and the object is disconnected, so that the electric push rod is convenient to disassemble, thereby helping to improve the disassemblability of the electric push rod.

Description

[0001] Cross-references to related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202522184174.4, filed on October 15, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of electric linear actuator technology, and more particularly to an electric linear actuator and a tent. Background Technology

[0004] An electric linear actuator is an electrically driven device that converts the rotation of a motor into linear reciprocating motion. It has wide applications in industrial automation, smart furniture, and smart outdoor equipment. The detachable and removable nature of electric linear actuators has become a key concern in the industry. Utility Model Content

[0005] In view of this, embodiments of this application aim to provide an electric actuator and a tent that help improve the detachability of the electric actuator.

[0006] This application provides an electric linear actuator, including:

[0007] Base;

[0008] The motor assembly is located on the base;

[0009] A lead screw is connected to the output end of the motor assembly, and the motor assembly drives the lead screw to rotate;

[0010] A connecting component is movably mounted on the base. The connecting component engages with the lead screw and is used to convert the rotation of the lead screw into linear motion of the connecting component. The connecting component is used to connect to an object.

[0011] In some implementations, the lead screw is coaxially arranged with the motor assembly.

[0012] In some embodiments, the base is formed with at least one slide rail extending axially along the lead screw, and the electric push rod includes at least one guide slidably disposed on the corresponding slide rail, the guide being connected to the connecting assembly.

[0013] In some embodiments, the base includes a back plate and two side plates, the two side plates being disposed opposite each other along a first direction, and the back plate being connected to the two side plates on both sides along the first direction, wherein the first direction is perpendicular to the axis of the lead screw;

[0014] At least one of the side plates is formed with the slide rail.

[0015] In some implementations, the projection of the outer periphery of the guide member onto a plane perpendicular to the first direction is circular.

[0016] The guide member is rotatable relative to the connecting assembly.

[0017] In some embodiments, the electric actuator includes a connecting shaft connecting the guide and the connecting assembly, the connecting shaft being rotatable relative to the connecting assembly such that the guide is rotatable relative to the connecting assembly. In some embodiments, the electric actuator includes a connecting shaft connecting the connecting assembly, the guide being rotatable about the connecting shaft.

[0018] In some embodiments, the electric actuator includes a bearing sleeved on the outer periphery of the connecting shaft, and the guide is connected to the bearing so that the guide rotates about the connecting shaft.

[0019] In some embodiments, an annular groove is formed on the outer periphery of the guide member;

[0020] The side plate is folded toward the back plate at one end away from the back plate to form a rib, the rib forming part of the slide rail and located within the annular groove; and / or, the surface of the back plate is formed with a rib, the rib extending along the axial direction of the lead screw, the rib forming part of the slide rail and located within the annular groove.

[0021] In some embodiments, the connecting assembly includes interconnected connectors and nuts, the nuts being fitted onto the lead screw;

[0022] The electric actuator includes a sleeve that extends axially along the lead screw, the lead screw being disposed inside the sleeve, and an opening formed in the sleeve wall for the nut or the connector to pass through. The connector is sleeved on the outer periphery of the sleeve and slides in cooperation with the sleeve.

[0023] In some embodiments, the connecting assembly includes a bushing disposed on the connector and located between the connector and the sleeve.

[0024] In some embodiments, the bushing has a groove formed on its inner circumferential surface facing the sleeve, the groove being used to accommodate grease.

[0025] In some embodiments, the motor assembly includes an end cap and a housing, the end cap being disposed at the end of the housing away from the lead screw, the end cap including an annular portion and a cover portion, the annular portion being detachably connected to the cover portion, and the cover portion being fixed to the housing by means of the connection force between the annular portion and the housing.

[0026] In some embodiments, the end cap includes a connecting lug connected to the side of the cap away from the housing, and the electric push rod includes a pressure plate that presses the connecting lug against the base.

[0027] In some embodiments, the pressure plate has a positioning hole, the connecting lug has a through-channel, the through-channel extends along a first direction perpendicular to the axis of the lead screw, the through-channel and the positioning hole are coaxially arranged, and are used for the positioning shaft to pass through.

[0028] This application provides a tent, which includes a drive device and at least two support frames, and the at least two support frames are arranged opposite each other in a lifting direction. The drive device is used to drive the upper support frame to lift relative to the lower support frame.

[0029] The driving device includes at least one scissor fork assembly and an electric push rod as described in any embodiment of this application. The scissor fork assembly is connected to two support frames arranged opposite each other along the lifting direction. The base is disposed on one of the support frames. The connecting component is connected to the movable end of the scissor fork assembly.

[0030] In some implementations, the base is arranged horizontally, and the connecting assembly is used to drive the movable end of the scissor fork assembly to move horizontally.

[0031] In some embodiments, the at least two support frames include a first support frame and a second support frame, the first support frame and the second support frame are arranged along the height direction, and the second support frame is located above the first support frame, and the base is disposed on the side of the second support frame facing the first support frame.

[0032] In some implementations, the scissor fork arm connected to the connecting assembly is a first scissor fork arm, which includes a scissor fork arm body and a mounting member. A first end of the scissor fork arm body is connected to the connecting assembly via the mounting member, and the mounting member is detachably connected to the first end.

[0033] In some embodiments, the connecting assembly includes interconnected connectors and nuts, the nuts being fitted onto the lead screw;

[0034] The mounting component is stacked with the first end along a first direction, which is perpendicular to the axial direction of the lead screw and perpendicular to the height direction. The mounting component has a first mounting hole, and the first end has a second mounting hole. The connecting component is disposed in the first mounting hole and the second mounting hole.

[0035] The first mounting hole has a first break on the side of its wall facing the first support frame, which is used for the connector to enter and exit the first mounting hole. The second mounting hole has a second break on the side of its wall away from the first support frame, which is used for the connector to enter and exit the second mounting hole.

[0036] This application provides a tent, which includes a support frame, a vertical frame, a tent fabric, and a driving device. The support frame is used to form a support platform, the driving device drives the vertical frame to rotate relative to the support frame, and the tent fabric is connected to the support frame and the vertical frame.

[0037] The driving device includes a connecting rod and an electric push rod as described in any embodiment of this application. The electric push rod is disposed on the upright frame. The base is arranged in a direction perpendicular to the support platform. One end of the connecting rod is hinged to the support frame, and the other end is connected to the connecting assembly. The connecting assembly is used to drive the other end of the connection to slide in a direction perpendicular to the support platform, so as to drive the upright frame to flip relative to the support frame.

[0038] The electric linear actuator provided in this application embodiment has a base for supporting the motor assembly and the connecting assembly. When the electric linear actuator is needed, the base is directly fixed to the device where the electric linear actuator is needed, so that the connecting assembly is connected to the object that needs to move linearly. When the electric linear actuator needs to be disassembled, only the base needs to be removed, and the connection between the connecting assembly and the object needs to be disconnected, which facilitates the disassembly of the electric linear actuator and thus helps to improve the disassembly and assembly of the electric linear actuator. Attached Figure Description

[0039] Figure 1 A schematic diagram of the electric linear actuator provided in the first embodiment of this application;

[0040] Figure 2 for Figure 1 A schematic diagram of the exploded structure shown;

[0041] Figure 3 for Figure 1 The diagram shown is a structural schematic from a second perspective.

[0042] Figure 4 for Figure 3 A cross-sectional view along the AA direction;

[0043] Figure 5 for Figure 1 The structure shown is a schematic diagram of the third-person view, omitting the base.

[0044] Figure 6 for Figure 1 A schematic diagram of the motor assembly shown in the diagram;

[0045] Figure 7 for Figure 6 A schematic cross-sectional view of the structure shown along the BB direction;

[0046] Figure 8 A schematic diagram of the electric linear actuator provided in the second embodiment of this application;

[0047] Figure 9 for Figure 8 The structural diagram shown omits the base.

[0048] Figure 10 for Figure 9 A schematic diagram of the exploded structure shown;

[0049] Figure 11 A schematic diagram of the structure of a first embodiment of a tent (excluding the tent fabric) provided in this application;

[0050] Figure 12 A structural schematic diagram of a second embodiment of the first type of tent (excluding the tent fabric) provided in this application;

[0051] Figure 13 for Figure 12 A schematic diagram of the structure shown, in which one of the scissor fork components cooperates with the first support frame and the second support frame;

[0052] Figure 14 for Figure 13 The schematic diagram of the base structure, omitting the electric actuator, is shown.

[0053] Figure 15 for Figure 14 A schematic diagram of the exploded structure shown;

[0054] Figure 16 for Figure 15 A magnified structural diagram of section G in the middle;

[0055] Figure 17 This is a structural schematic diagram of a second type of tent (without the tarpaulin) provided in an embodiment of this application.

[0056] Explanation of reference numerals in the attached figures

[0057] 100. Electric push rod; 10. Base; 10a. Slide rail; 11. Back plate; 111. Rib; 12. Side plate; 121. Rib; 20. Motor assembly; 21. End cap; 211. Cover; 212. Annular part; 2121. Stop part; 22. Housing; 213. Connecting ear; 213a. Through-pass channel; 30. Lead screw; 40. Connecting assembly; 41. Connector; 42. Nut; 43. Bushing; 431. Groove; 50. Guide; 51. Annular groove; 60. Bearing; 70. Sleeve; 71. Opening; 80. Pressure plate; 81. Positioning hole; 90. Connecting shaft; 200. Tent; 200a. First type of tent; 200b. Second type of tent; 201. Support frame; 201a. First support frame; 201b. Second support frame; 202. Drive unit; 2021. Scissor fork assembly; 20211. First scissor fork arm; 202111. Scissor fork arm body; 202111a. First end; 202112. Second mounting hole; 202113. Second break; 202114. Mounting component; 202115. First mounting hole; 202116. First break; 20212. Second scissor fork arm; 203. Drive assembly; 2031. Connecting rod; 204. Frame. Detailed Implementation

[0058] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0059] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0060] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0061] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0063] In the description of this application specification, the axial direction of the lead screw 30 is the direction indicated by v1 in the figure, the first direction is the direction indicated by v2 in the figure, the second direction is the direction indicated by v3 in the figure, the lifting direction is the direction indicated by v4 in the figure, and the direction perpendicular to the support platform is the direction indicated by v5 in the figure.

[0064] This application provides an electric actuator 100. Please refer to [link / reference]. Figure 1 , Figure 5 , Figure 8 and Figure 9 The electric actuator 100 includes a base 10, a motor assembly 20, a lead screw 30, and a connecting assembly 40.

[0065] Specifically, the motor assembly 20 is mounted on the base 10. The lead screw 30 is connected to the output end of the motor assembly 20, and the motor assembly 20 drives the lead screw 30 to rotate. The connecting assembly 40 is movably mounted on the base 10 and is helically engaged with the lead screw 30, converting the rotation of the lead screw 30 into linear motion of the connecting assembly 40. The connecting assembly 40 is used to connect to an object. Thus, the connecting assembly 40 drives the object to slide back and forth along the axial direction of the lead screw 30.

[0066] In some related technologies, the motor assembly 20, lead screw 30, and connecting assembly 40 are directly assembled to the equipment that requires the use of the electric actuator 100. That is, the base 10 in the related technologies is formed on the equipment that requires the use of the electric actuator 100. When the electric actuator 100 is required, the motor assembly 20, lead screw 30, and connecting assembly 40 are fixed to the equipment of the electric actuator 100. When the motor actuator needs to be repaired or replaced, the motor assembly 20, lead screw 30, and connecting assembly 40 need to be disassembled at the same time, and the connection between the connecting assembly 40 and the object needs to be disconnected. The whole disassembly process is relatively complicated and cumbersome.

[0067] The electric linear actuator 100 provided in this embodiment has a base 10 for supporting the motor assembly 20 and the connecting assembly 40. When the electric linear actuator 100 is needed, the base 10 is directly fixed to the device where the electric linear actuator 100 is needed, so that the connecting assembly 40 is connected to the object that needs to move linearly. When the electric linear actuator 100 needs to be disassembled, only the base 10 needs to be disassembled, and the connection between the connecting assembly 40 and the object needs to be disconnected, which facilitates the disassembly of the electric linear actuator 100 and thus helps to improve the detachability of the electric linear actuator 100.

[0068] In some embodiments, the lead screw 30 and the motor assembly 20 are coaxially arranged. This facilitates the assembly between the lead screw 30 and the motor assembly 20, and also helps to reduce the space occupied by the lead screw 30 and the motor assembly 20 in a plane perpendicular to the axial direction of the lead screw 30.

[0069] For example, the motor assembly 20 includes a brake motor and a reducer. The output shaft of the brake motor is connected to the input end of the reducer, and the output end of the reducer is connected to the lead screw 30 for driving the lead screw 30 to rotate.

[0070] In an embodiment where the lead screw 30 and the motor assembly 20 are coaxially arranged, the brake motor, the reducer, and the lead screw 30 are all coaxially arranged.

[0071] There are no restrictions on the type of speed reducer; for example, it can be a harmonic speed reducer, a planetary gear speed reducer, etc.

[0072] In some embodiments, the base 10 has at least one slide rail 10a extending axially along the lead screw 30. The electric push rod 100 includes at least one guide member 50, which is slidably disposed on the corresponding slide rail 10a and connected to the connecting assembly 40. Thus, the connecting assembly 40 drives the guide member 50 to slide within the slide rail 10a. The guide member 50 restricts the rotational freedom of the connecting assembly 40, ensuring that the connecting assembly 40 can only move axially along the lead screw 30, thereby improving the stability of the connecting assembly 40 during linear movement.

[0073] The location of the slide rail 10a is not limited, as long as it can extend along the axial direction of the lead screw 30.

[0074] For example, such as Figure 1 and Figure 8 As shown, the base 10 includes a back plate 11 and two side plates 12. The two side plates 12 are arranged opposite each other along a first direction. The back plate 11 is connected to the two side plates 12 on both sides along the first direction. The first direction is perpendicular to the axis of the lead screw 30.

[0075] At least one side plate 12 is formed with a slide rail 10a.

[0076] It should be noted that at least one side plate 12 is provided with a slide rail 10a. This can be one of the two side plates 12 or both side plates 12 can be provided with a slide rail 10a.

[0077] In this embodiment, since the side plate 12 is formed with a slide rail 10a, the guide member 50 is connected to the side of the connecting assembly 40 along the first direction. When the connecting assembly 40 is connected to the object and drives the object to move back and forth, part of the load applied by the object to the connecting assembly 40 is also transferred to the guide member 50. In this way, the guide member 50 can also play the role of sharing the load, which helps to reduce the deformation of the connecting assembly 40 and extend the service life of the connecting assembly 40. On the other hand, it also helps to improve the load-bearing capacity of the connecting assembly 40.

[0078] In embodiments where slide rails 10a are formed on both side plates 12, the number of guide members 50 can also be two. The two guide members 50 are disposed on both sides of the connecting assembly 40 along the first direction, which can restrict the movement of the connecting assembly 40 on both sides along the first direction, thus helping to further improve the movement stability of the connecting assembly 40. Moreover, the two guide members 50 can more effectively distribute the load applied to the connecting assembly 40 by the object.

[0079] In some other embodiments, the back plate 11 may also be formed with a slide rail 10a.

[0080] In some embodiments, the projection of the outer periphery of the guide member 50 onto a plane perpendicular to the first direction is circular, and the guide member 50 is rotatable relative to the connecting assembly 40. This converts the sliding friction between the guide member 50 and the slide rail 10a into rolling friction. The frictional force of rolling friction is relatively smaller than that of sliding friction, which helps to improve the moving efficiency of the connecting assembly 40.

[0081] The guide 50 can rotate relative to the connecting assembly 40 in any manner.

[0082] For example, such as Figure 10As shown, the electric actuator 100 includes a connecting shaft 90, which connects the guide 50 and the connecting assembly 40. The connecting shaft 90 is rotatable relative to the connecting assembly 40, so that the guide 50 is rotatable relative to the connecting assembly 40.

[0083] In this embodiment, the connecting assembly 40 forms a rotating channel, and the connecting shaft 90 is disposed within the rotating channel. When the lead screw 30 rotates and drives the connecting assembly 40 to move along the axial direction of the lead screw 30, the friction between the guide member 50 and the slide rail 10a drives the guide member 50 and the connecting shaft 90 to rotate relative to the connecting assembly 40 as a whole.

[0084] In this embodiment, the connecting shaft 90 and the guide member 50 can be an integral structure. Of course, in other embodiments, the connecting shaft 90 and the guide member 50 can also be separate structures.

[0085] In other embodiments, the electric actuator 100 includes a connecting shaft 90 connected to a connecting assembly 40, and a guide member 50 rotatable about the connecting shaft 90. In this embodiment, when the lead screw 30 rotates and drives the connecting assembly 40 to move axially along the lead screw 30, the friction between the guide member 50 and the slide rail 10a drives the guide member 50 to rotate about the connecting shaft 90. The connecting shaft 90 and the connecting assembly 40 remain relatively stationary, allowing the guide member 50 to rotate relative to the connecting assembly 40.

[0086] For example, such as Figure 2 As shown, the electric actuator 100 includes a bearing 60, which is sleeved on the outer periphery of the connecting shaft 90. The guide member 50 is connected to the bearing 60 so that the guide member 50 rotates around the connecting shaft 90. This helps to improve the rotational stability of the guide member 50.

[0087] Furthermore, by setting the bearing 60, the load borne by the connecting assembly 40 can be better unloaded to the guide 50, which on the one hand helps to further reduce the deformation of the connecting assembly 40 and extend the service life of the connecting assembly 40; on the other hand, it also helps to further improve the load-bearing capacity of the connecting assembly 40.

[0088] In some embodiments, such as Figure 2 As shown, an annular groove 51 is formed on the outer periphery of the guide member 50.

[0089] For example, such as Figure 4 As shown, the end of the side plate 12 away from the back plate 11 is folded toward the back plate 11 to form a rib 121, the rib 121 forming part of the slide rail 10a, the rib 121 being located within the annular groove 51; and / or, a rib 111 is formed on the surface of the back plate 11, the rib 111 extending along the axial direction of the lead screw 30, the rib 111 forming part of the slide rail 10a, the rib 111 being located within the annular groove 51.

[0090] In this embodiment, the rib 121 and / or the rib 111 can limit the annular groove 51 in the first direction, reduce the probability of the guide 50 deviating, and enable the guide 50 to move as linearly as possible along the axial direction of the lead screw 30, which helps to improve the motion accuracy of the connecting assembly 40.

[0091] It should be noted that both the rib 121 and the rib 111 can be set at the same time, or only one of the rib 121 and the rib 111 can be set.

[0092] In embodiments where both ribs 121 and ribs 111 are provided, the ribs 121 and ribs 111 are arranged opposite each other along the second direction, which helps to further reduce the probability of the guide 50 deviating. The second direction, the first direction, and the axis of the lead screw 30 are perpendicular to each other.

[0093] In some embodiments, the connecting assembly 40 includes a connector 41 and a nut 42 that are interconnected, with the nut 42 sleeved on the lead screw 30. Rotation of the lead screw 30 causes the nut 42 to move axially along the lead screw 30, and the nut 42 causes the connector 41 to move axially.

[0094] like Figure 5 and Figure 9 As shown, the electric actuator 100 includes a sleeve 70 extending axially along a lead screw 30 disposed within the sleeve 70. The sleeve 70 has at least one opening 71 formed in its wall for a nut 42 or a connector 41 to pass through, such that the connector 41 is at least partially located outside the sleeve 70.

[0095] In this embodiment, the sleeve 70 provides protection for the lead screw 30, reducing the entry of external dust and debris into the threaded pair of the lead screw 30 and extending the service life of the lead screw 30 and the nut 42. The opening 71 allows the connector 41 to connect with the nut 42, and also facilitates the connection of the connector 41 to an object.

[0096] The number of openings 71 is not limited and can be set according to the specific structure of the connector 41 and the nut 42. In some embodiments, such as Figure 5 As shown, the connector 41 is sleeved on the outer periphery of the sleeve 70 and slides with the sleeve 70. In this embodiment, the number of openings 71 is one.

[0097] In some other embodiments, such as Figure 9 As shown, there are two connectors 41, which are respectively connected to the two sides of the nut 42 along the first direction. In this embodiment, there are two openings 71, so that at least part of the structure of the two connectors 41 can be located outside the sleeve 70 to connect with the object.

[0098] In an embodiment where the connector 41 is fitted around the outer periphery of the sleeve 70 and slides with the sleeve 70, the connecting assembly 40 includes a bushing 43, which is disposed on the connector 41 and located between the connector 41 and the sleeve 70. This helps to reduce friction between the connector 41 and the sleeve 70, extending the service life of both the sleeve 70 and the connector 41.

[0099] In some embodiments, such as Figure 4 As shown, a groove 431 is formed on the inner circumferential surface of the bushing 43 facing the sleeve 70. The groove 431 is used to accommodate grease. In this way, when the grease is placed in the groove 431, it helps to reduce the friction between the bushing 43 and the sleeve 70, and helps to improve the movement efficiency of the connector 41.

[0100] In some implementations, such as Figure 6 and Figure 7 As shown, the motor assembly 20 includes an end cover 21 and a housing 22. The end cover 21 is located at the end of the housing 22 away from the lead screw 30. The end cover 21 includes an annular portion 212 and a cover portion 211. The annular portion 212 and the cover portion 211 are detachably connected. The cover portion 211 is fixed to the housing 22 by means of the connecting force between the annular portion 212 and the housing 22.

[0101] It should be noted that the cover 211 is fixed to the housing 22 by means of the connection between the annular part 212 and the housing 22, which means that the edge of the cover 211 is engaged with the end of the annular part 212 away from the housing 22 and the housing 22.

[0102] In this embodiment, during the assembly process, it is only necessary to connect the annular portion 212 to the housing 22.

[0103] For example, such as Figure 7 As shown, a stop portion 2121 is formed at one end of the annular portion 212 away from the housing 22. When the annular portion 212 is connected to the housing 22, the edge of the cover portion 211 is engaged between the stop portion 2121 and the housing 22. Thus, the cover portion 211 is fixed to the housing 22 by means of the connection force between the annular portion 212 and the housing 22.

[0104] For example, the annular portion 212 is threadedly connected to the housing 22. In this embodiment, during assembly, only the annular portion 212 needs to be rotated to achieve the connection between the cover 211, the annular portion 212, and the housing 22. Neither the cover 211 nor the housing 22 needs to be rotated, which reduces the probability of the motor assembly 20's cables getting tangled.

[0105] In some embodiments, such as Figure 2 As shown, the end cap 21 includes a connecting ear 213, which is connected to the side of the cap 211 away from the housing 22. The electric push rod 100 includes a pressure plate 80, which presses the connecting ear 213 against the base 10.

[0106] In embodiments where the base includes a back plate 11, the connection ear 213 is pressed against the back plate 11. Thus, the connection ear 213 is located within the space formed by the pressure plate 80 and the back plate 11, thereby at least limiting the connection ear 213 in the second direction, reducing the probability of the motor assembly 20 detaching from the base 10 in the second direction, and improving the stability of the motor assembly 20.

[0107] For example, the pressure plate 80 has a positioning hole 81, and the connecting ear 213 has a through channel 213a. The through channel 213a extends along a first direction, which is perpendicular to the axis of the lead screw 30. The through channel 213a and the positioning hole 81 are coaxially arranged and are used for the positioning shaft to pass through.

[0108] During assembly, the cover 211 is positioned when the positioning shaft passes through the positioning hole 81 and the through-channel 213a. This helps reduce the likelihood of the cover 211 wobbling or shifting when the annular portion 212 is connected to the housing 22, thus improving assembly accuracy and efficiency. After the electric push rod 100 is assembled, the positioning shaft can be removed, thereby reducing the weight of the electric push rod 100.

[0109] In some embodiments, at least one of the two ends of the base 10 along the axial direction of the lead screw 30 is open. This facilitates the installation of the motor assembly 20, the lead screw 30, and the connecting assembly 40, etc., onto the base 10 through the open end.

[0110] In embodiments that include guide member 50, it is also convenient to install guide member 50 onto slide rail 10a.

[0111] Based on the electric push rod 100 provided in the embodiments of this application, the embodiments of this application also provide a tent 200, such as... Figure 11 As shown, the tent 200 includes a drive unit 202 and at least two support frames 201, and the at least two support frames 201 are arranged opposite each other in the lifting direction. The drive unit 202 is used to drive the upper support frame 201 to lift relative to the lower support frame 201.

[0112] Specifically, the drive device 202 includes at least one scissor fork assembly 2021 and the electric push rod 100 described in any embodiment of this application. The scissor fork assembly 2021 is connected to two support frames 201 arranged opposite to each other along the lifting direction. The scissor fork assembly 2021 includes two scissor fork arms that are hinged to each other. The base 10 is disposed on one of the support frames 201, and the connecting component 40 is connected to one of the scissor fork arms.

[0113] For ease of description, the tent 200 provided in the embodiments of this application will be referred to as the first type of tent 200a. Figure 13As shown, the scissor arm connected to the connecting component 40 is named the first scissor arm 20211, and the other scissor arm is named the second scissor arm 20212.

[0114] The first tent 200a provided in this application embodiment drives the first scissor fork arm 20211 to move back and forth along the axis of the lead screw through the connecting component 40, thereby realizing the lifting and lowering of the scissor fork assembly 2021, thereby driving the upper support frame 201 to lift and lower relative to the lower support frame 201.

[0115] For example, the base 10 is arranged in a horizontal direction, and the connecting component 40 is used to drive the active end 2021a of the scissor fork assembly 2021 to move in a horizontal direction.

[0116] The connection method between the connecting component 40 and the first scissor arm 20211 is not limited. For example, it can be detached, which makes it easy to disconnect the connecting component 40 from the first scissor arm 20211, further improving the detachability of the electric push rod 100.

[0117] In some embodiments, please refer to Figure 12 The system includes at least two support frames, including a first support frame 201a and a second support frame 201b. The first support frame 201a and the second support frame 201b are arranged along the height direction, with the second support frame 201b located above the first support frame 201a. A base is disposed on the side of the second support frame 201b facing the first support frame 201a. That is, an electric push rod is disposed on the second support frame 201b. When the first support frame 201a is used to connect to the rear bed of the vehicle, the electric push rod is disposed on the second support frame 201b, such that the electric push rod is concealed on the side of the second support frame 201b facing the first support frame 201a.

[0118] For example, please refer to Figure 15 and Figure 16 The first scissor arm 20211 includes a scissor arm body 202111 and a mounting component 202114. The first end 202111a of the scissor arm body 202111 is connected to the connecting assembly via the mounting component 202114. The mounting component 202114 is detachably connected to the first end 202111a. In this embodiment, when it is necessary to disassemble the electric actuator, the mounting component 202114 can be removed first to facilitate the separation of the first end 202111a from the connecting assembly, and then the base can be removed to disassemble the electric actuator.

[0119] For example, the mounting part 202114 is connected to the first end 202111a via a threaded connector.

[0120] For example, please continue reading Figure 16The mounting component 202114 and the first end 202111a are stacked along a first direction, which is perpendicular to the axis of the lead screw and perpendicular to the height direction. The mounting component 202114 has a first mounting hole 202115, and the first end 202111a has a second mounting hole 202112. The connecting component is disposed in the first mounting hole 202115 and the second mounting hole 202112.

[0121] The first mounting hole 202115 has a first break 202116 on the side of the hole wall facing the first support frame 201a. The first break 202116 is used for the connector to enter and exit the first mounting hole 202115. The second mounting hole 202112 has a second break 202113 on the side of the hole wall away from the first support. The second break 202113 is used for the connector to enter and exit the second mounting hole 202112.

[0122] In this embodiment, when it is necessary to disassemble the electric push rod, the connection between the mounting part 202114 and the first end 202111a is first disconnected. The first break 202116 facilitates the separation of the mounting part 202114 from the connector. Then, the connector is separated from the first end 202111a through the second break 202113. The whole process of disassembly and assembly is relatively convenient and quick.

[0123] Based on the electric push rod 100 provided in the embodiments of this application, such as Figure 2 As shown, this application embodiment can also provide another type of tent 200, which includes a support frame 201, a vertical frame 204, a tent cloth and a driving device 202. The support frame 201 is used to form a support platform, the driving device 202 drives the vertical frame 204 to rotate relative to the support frame 201, and the tent cloth is connected to the support frame 201 and the vertical frame 204.

[0124] For ease of description, the tent 200 provided in the embodiments of this application is referred to as the second type of tent 200b.

[0125] In this embodiment, the second type of tent 200b has an unfolded state and a folded state. In the unfolded state, the upright frame 204 is flipped to form an angle with the support frame 201. At this time, the tent fabric is spread out by the upright frame 204 and the support frame 201, and the tent fabric, upright frame 204, and support frame 201 can enclose an activity space. In the folded state, the upright frame 204 is flipped to overlap with the support frame 201, and the tent fabric is stored inside the support frame 201. Thus, the unfolding and folding of the second type of tent 200b is achieved by the flipping of the upright frame 204 relative to the support frame 201.

[0126] Exemplarily, the drive device 202 includes a connecting rod 2031 and an electric push rod 100 provided in any embodiment of this application. The electric push rod 100 is disposed on the upright frame 204, and the base 10 is arranged in a direction perpendicular to the support platform. One end of the connecting rod 2031 is hinged to the support frame 201, and the other end is connected to the connecting assembly 40. The connecting assembly 40 is used to drive the other end of the connection to slide in a direction perpendicular to the support platform, so as to drive the upright frame 204 to rotate relative to the support frame 201. In this way, by driving the other end of the connecting rod 2031 to move back and forth in a direction perpendicular to the support platform through the connecting assembly 40, the second type of tent 200b can be unfolded or folded.

[0127] It is understandable that the first type of tent 200a and the second type of tent 200b can be two separate products or integrated into one product; there is no limitation on this.

[0128] It is understood that the electric actuator 100 provided in this application embodiment can also be applied to other fields.

[0129] The various embodiments / implementations provided in this application can be combined with each other without creating contradictions.

[0130] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An electric linear actuator, characterized in that, include: Base; The motor assembly is located on the base; A lead screw is connected to the output end of the motor assembly, and the motor assembly drives the lead screw to rotate; A connecting component is movably mounted on the base. The connecting component is helically engaged with the lead screw and is used to convert the rotation of the lead screw into linear motion of the connecting component. The connecting component is used to connect to an object. The connecting assembly includes interconnected connectors and nuts, with the nuts fitted onto the lead screw; The electric actuator includes a sleeve extending axially along the lead screw, the lead screw being disposed within the sleeve, and the sleeve wall having at least one opening for the nut or the connector to pass through, such that the connector is at least partially located outside the sleeve.

2. The electric linear actuator according to claim 1, characterized in that, The lead screw is coaxially arranged with the motor assembly.

3. The electric linear actuator according to claim 1, characterized in that, The base has at least one slide rail extending along the axial direction of the lead screw. The electric push rod includes at least one guide member slidably disposed on the corresponding slide rail and connected to the connecting assembly.

4. The electric linear actuator according to claim 3, characterized in that, The base includes a back plate and two side plates, the two side plates are arranged opposite each other along a first direction, and the back plate is connected to the two side plates on both sides along the first direction, wherein the first direction is perpendicular to the axis of the lead screw. At least one of the side plates is formed with the slide rail.

5. The electric actuator according to claim 4, characterized in that, When projected onto a plane perpendicular to the first direction, the projection of the outer periphery of the guide member is circular. The guide member is rotatable relative to the connecting assembly.

6. The electric linear actuator according to claim 5, characterized in that, The electric actuator includes a connecting shaft that connects the guide and the connecting assembly. The connecting shaft is rotatable relative to the connecting assembly, such that the guide is rotatable relative to the connecting assembly.

7. The electric linear actuator according to claim 5, characterized in that, The electric actuator includes a connecting shaft that connects to the connecting assembly, and the guide member is rotatable about the connecting shaft.

8. The electric linear actuator according to claim 7, characterized in that, The electric actuator includes a bearing, which is sleeved on the outer periphery of the connecting shaft. The guide member is connected to the bearing so that the guide member rotates around the connecting shaft.

9. The electric linear actuator according to claim 5, characterized in that, The outer periphery of the guide member is formed with an annular groove; The side plate is folded toward the back plate at one end away from the back plate to form a rib, the rib forming part of the slide rail and located within the annular groove; and / or, the surface of the back plate is formed with a rib, the rib extending along the axial direction of the lead screw, the rib forming part of the slide rail and located within the annular groove.

10. The electric linear actuator according to claim 1, characterized in that, The connector is sleeved on the outer periphery of the sleeve and slides with the sleeve. The connecting assembly includes a bushing, which is disposed on the connector and located between the connector and the sleeve.

11. The electric linear actuator according to claim 10, characterized in that, The bushing has a groove formed on its inner circumferential surface facing the sleeve, the groove being used to accommodate grease.

12. The electric linear actuator according to claim 1, characterized in that, The motor assembly includes an end cap and a housing. The end cap is located at the end of the housing away from the lead screw. The end cap includes an annular portion and a cover portion. The annular portion and the cover portion are detachably connected. The cover portion is fixed to the housing by means of the connection force between the annular portion and the housing.

13. The electric linear actuator according to claim 12, characterized in that, The end cap includes a connecting lug connected to the side of the cap away from the housing, and the electric push rod includes a pressure plate that presses the connecting lug against the base.

14. The electric linear actuator according to claim 13, characterized in that, The pressure plate has a positioning hole, and the connecting lug has a through-channel. The through-channel extends along a first direction, which is perpendicular to the axis of the lead screw. The through-channel and the positioning hole are coaxially arranged and are used for the positioning shaft to pass through.

15. A tent, characterized in that, The tent includes a drive unit and at least two support frames, and the at least two support frames are arranged in sequence relative to each other along the lifting direction. The drive unit is used to drive the upper support frame to lift relative to the lower support frame. The drive device includes at least one scissor fork assembly and at least one electric push rod as described in any one of claims 1 to 14. The scissor fork assembly is connected to two support frames arranged opposite each other along the lifting direction. The scissor fork assembly includes two scissor fork arms that are hinged to each other. The base is disposed on one of the support frames. The connecting assembly is connected to one of the scissor fork arms.

16. The tent according to claim 15, characterized in that, The base is arranged horizontally, and the connecting component is used to drive the movable end of the scissor fork assembly to move horizontally.

17. The tent according to claim 15, characterized in that, The at least two support frames include a first support frame and a second support frame, the first support frame and the second support frame are arranged along the height direction, and the second support frame is located above the first support frame, and the base is disposed on the side of the second support frame facing the first support frame.

18. The tent according to claim 17, characterized in that, The scissor fork arm connected to the connecting assembly is a first scissor fork arm. The first scissor fork arm includes a scissor fork arm body and a mounting member. The first end of the scissor fork arm body is connected to the connecting assembly through the mounting member, and the mounting member is detachably connected to the first end.

19. The tent according to claim 18, characterized in that, The connecting assembly includes interconnected connectors and nuts, with the nuts fitted onto the lead screw; The mounting component is stacked with the first end along a first direction, which is perpendicular to the axial direction of the lead screw and perpendicular to the height direction. The mounting component has a first mounting hole, and the first end has a second mounting hole. The connecting component is disposed in the first mounting hole and the second mounting hole. The first mounting hole has a first break on the side of its wall facing the first support frame, which is used for the connector to enter and exit the first mounting hole. The second mounting hole has a second break on the side of its wall away from the first support frame, which is used for the connector to enter and exit the second mounting hole.

20. A tent, characterized in that, The tent includes a support frame, a vertical frame, a tent fabric, and a drive assembly. The support frame forms a support platform, the drive assembly drives the vertical frame to rotate relative to the support frame, and the tent fabric is connected to the support frame and the vertical frame. The drive assembly includes a connecting rod and an electric actuator as described in any one of claims 1 to 14, the electric actuator being disposed on the upright frame, the base being arranged in a direction perpendicular to the support platform, one end of the connecting rod being hinged to the support frame, and the other end being connected to the connecting assembly, the connecting assembly being used to drive the other end of the connection to slide in a direction perpendicular to the support platform, so as to drive the upright frame to rotate relative to the support frame.

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