Electrically powered prop and vehicle

Abstract

The application discloses an electric supporting rod and a vehicle. The electric supporting rod comprises a main shell which is formed with an installation cavity extending in an axial direction, and a damper, a motor and a speed reducer are sequentially arranged in the installation cavity in an axial direction. A screw rod extends into the installation cavity at one end, and the screw rod is located at one end of the speed reducer away from the motor. The speed reducer is used for powerfully connecting the motor and the screw rod to drive the screw rod to rotate. A pull rod is at least partially sleeved on the screw rod and is in threaded cooperation with the screw rod. According to the electric supporting rod, the use of a shaft coupling is cancelled, the speed reducer is directly connected with the screw rod, the overall structure of the electric supporting rod is simplified, the transmission path of the overall electric supporting rod is shortened, the transmission efficiency is greatly improved, the overall length of the electric supporting rod is shortened, the overall weight is reduced, the electric supporting rod is arranged in a small space, and the electric supporting rod is flexible and convenient.

Description

Technical Field

[0001] This invention relates to the field of vehicle manufacturing technology, and more particularly to an electric strut and a vehicle having the electric strut. Background Technology

[0002] The existing electric strut structure is too long overall, making it difficult to arrange in small cars with limited space. In addition, the damper and coupling are installed at the connection between the reducer and the lead screw, resulting in a long power transmission path for the motor, which is not conducive to energy saving. Furthermore, the large number of internal components and the large axial space occupied indicate that there is room for improvement. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes an electric strut, which can improve transmission efficiency, shorten the overall length of the electric strut, reduce the overall weight, occupy little space, and is flexible and convenient.

[0004] According to an embodiment of the present invention, an electric strut includes: a main housing having an axially extending mounting cavity, wherein a damper, a motor, and a reducer are arranged sequentially along the axial direction within the mounting cavity; a lead screw, one end of which extends into the mounting cavity, the lead screw being located at the end of the reducer away from the motor, the reducer being used to powerly connect the motor and the lead screw to drive the lead screw to rotate; and a tie rod, at least a portion of which is sleeved outside the lead screw and threadedly engaged with the lead screw.

[0005] According to an embodiment of the present invention, the electric strut, by setting a damper, a motor and a reducer sequentially distributed along the axial direction in the mounting cavity, and directly connecting the reducer to the lead screw, eliminates the need for a coupling, thereby simplifying the overall structure of the electric strut, shortening the overall transmission path of the electric strut, and greatly improving the transmission efficiency. Furthermore, by installing the damper at the end of the motor away from the reducer, the space at the end away from the reducer is well utilized, achieving effective use of internal space, shortening the overall length of the electric strut, reducing the overall weight, and facilitating its placement in confined spaces, making it flexible and convenient.

[0006] According to some embodiments of the present invention, the electric strut further includes a connecting rod, one end of which is connected to the main housing, the connecting rod is sleeved outside the pull rod, and the connecting rod and the pull rod slide in axial direction.

[0007] According to some embodiments of the present invention, in the electric strut, one of the inner peripheral wall of the connecting rod and the outer peripheral wall of the pull rod is provided with a guide protrusion and the other is provided with a guide groove, and the guide protrusion and the guide groove slide in cooperation along the axial direction of the pull rod.

[0008] According to some embodiments of the electric strut of the present invention, there are multiple guide protrusions and guide grooves that are matched one-to-one, and the multiple guide protrusions are spaced apart in the circumferential direction of the strut.

[0009] According to some embodiments of the present invention, in the electric strut, the damper is integrated at the end of the motor opposite to the reducer.

[0010] According to some embodiments of the present invention, the electric strut has a bearing seat in the mounting cavity, the bearing seat is located at the end of the reducer away from the motor, and one end of the lead screw passes through the bearing seat and is rotatably supported by the bearing seat.

[0011] According to some embodiments of the present invention, in the electric strut, the bearing and the bearing housing are axially limited by a first retaining ring, and / or the lead screw and the bearing are axially limited by a second retaining ring.

[0012] According to some embodiments of the present invention, the electric strut has a reducer with an active locking tooth, one end of the lead screw with a driven locking tooth that meshes with the active locking tooth, and one end of the lead screw with a locking tooth sleeve located between the driven locking tooth and the active locking tooth.

[0013] According to some embodiments of the present invention, the electric strut further includes a first ball-and-socket structure and a second ball-and-socket structure. The first ball-and-socket structure is hinged to one end of the main housing away from the lead screw, and the second ball-and-socket structure is hinged to one end of the pull rod away from the main housing. One of the first ball-and-socket structure and the second ball-and-socket structure is adapted to be connected to the vehicle body, and the other is adapted to be connected to the tailgate.

[0014] The present invention also proposes a vehicle.

[0015] The vehicle according to an embodiment of the present invention is equipped with the electric strut described in any of the above claims.

[0016] The vehicle and the aforementioned electric strut have the same advantages over the prior art, which will not be repeated here.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the structure of the electric strut according to an embodiment of the present invention;

[0020] Figure 2 The cross-section of the electric strut according to an embodiment of the present invention. Figure 1 ;

[0021] Figure 3 The cross-section of the electric strut according to an embodiment of the present invention. Figure 2 ;

[0022] Figure 4 yes Figure 3 A schematic diagram of a partial structure;

[0023] Figure 5 This is an exploded view of an electric strut according to an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of an electric strut assembled in a vehicle according to an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the guide protrusion and guide groove according to an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the pull rod and lead screw according to an embodiment of the present invention;

[0027] Figure 9 This is an exploded view of the reducer and lead screw according to an embodiment of the present invention;

[0028] Figure 10 This is an assembly drawing of a reducer and a lead screw according to an embodiment of the present invention;

[0029] Figure 11 This is a schematic diagram of the structure of a speed reducer according to an embodiment of the present invention. Figure 1 ;

[0030] Figure 12 This is a schematic diagram of the structure of a speed reducer according to an embodiment of the present invention. Figure 2 ;

[0031] Figure 13 The assembly of the damper and the reducer according to an embodiment of the present invention Figure 1 ;

[0032] Figure 14 The assembly of the damper and the reducer according to an embodiment of the present invention Figure 2 .

[0033] Figure label:

[0034] Electric strut 100

[0035] Main housing 1, mounting cavity 113, outer sleeve 111, inner sleeve 112, damper 2, damper housing 21, sealing ring 22, motor 3, reducer 4, driving retaining tooth 41, lead screw 5, driven retaining tooth 51, retaining tooth sleeve 52, pull rod 6, guide protrusion 61, connecting rod 7, guide groove 71, bearing seat 8, bearing 9, first retaining ring 91, second retaining ring 92, first ball-and-socket structure 12, second ball-and-socket structure 13, wiring harness 14, sealing gasket 15.

[0036] Body 200, rear door 300. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] The following is for reference. Figures 1-14 The electric strut 100 according to an embodiment of the present invention is described. The electric strut 100 can improve transmission efficiency, shorten the overall length of the electric strut 100, reduce the overall weight, occupy little space, and is flexible and convenient.

[0041] like Figures 1-14 As shown, the electric strut 100 according to an embodiment of the present invention includes: a main housing 1, a lead screw 5, and a pull rod 6.

[0042] The main housing 1 is used to install and protect the internal components. The main housing 1 forms an axially extending mounting cavity 113. The mounting cavity 113 is provided with a damper 2, a motor 3 and a reducer 4 arranged sequentially along the axial direction. That is, the interior of the main housing 1 is hollow and can be constructed as a cylindrical structure to form the axially extending mounting cavity 113. The damper 2, motor 3 and reducer 4 are installed sequentially in the mounting cavity 113. The damper 2 is used to provide resistance to movement, reduce vibration and impact during the movement of the electric strut 100, enhance the stability and reliability of the movement of the electric strut 100, and realize the suspension of the electric strut 100. The motor 3 is used to provide power and transmit the power to the reducer 4. The reducer 4 is used to increase the torque of the power output from the motor 3 and reduce the output speed of the motor, so that the movement of the electric strut 100 is more stable and controllable.

[0043] The damper 2, motor 3 and reducer 4 are connected in sequence, that is, the damper 2, motor 3 and reducer 4 are set coaxially, and the damper 2 is connected to the end of motor 3 away from the reducer, so it can rotate with motor 3. Thus, the damping force generated by the damper 2 can be increased by the torque of the reducer 4 connected to the front end of motor 3, so as to better achieve the suspension of electric strut 100 and ensure the reliability of the suspension function.

[0044] One end of the lead screw 5 extends into the mounting cavity 113. The lead screw 5 is located at the end of the reducer 4 furthest from the motor. The reducer 4 is used to power the motor 3 and the lead screw 5 to drive the lead screw 5 to rotate. That is, one end of the lead screw 5 is powered by the reducer 4, and the other end extends outside the mounting cavity 113. Thus, the damper 2, motor 3, reducer 4, and lead screw 5 are sequentially connected. In this way, when the motor 3 starts to rotate, the power it generates is reduced and increased in torque by the reducer 4 and then transmitted to the lead screw 5, thereby driving the lead screw 5 to rotate. The rotation direction of the lead screw 5 is the same as the rotation direction of the motor 3.

[0045] In addition, the reducer 4 is directly connected to the lead screw 5, avoiding the use of a coupling for connection, shortening the overall transmission path of the electric strut 100, improving transmission efficiency, thereby shortening the overall structural length of the electric strut 100, reducing the overall weight, and optimizing and improving the overall structure of the electric strut 100, making it applicable to places with limited structural space.

[0046] Furthermore, at least a portion of the pull rod 6 is sleeved outside the lead screw 5 and threadedly engaged with it. That is, the pull rod 6 can be partially or completely sleeved outside the lead screw 5. The lead screw 5 has external threads on its outer circumference, and the pull rod 6 has a through-hole threaded hole. An internal thread corresponding to the external thread is provided on the inner wall of the through-hole. The lead screw 5 passes axially into the through-hole of the pull rod 6, allowing the internal and external threads to mesh, thus achieving threaded engagement between the pull rod 6 and the lead screw 5. This allows the pull rod 6 to move axially relative to the lead screw 5 through the threaded engagement, meaning the pull rod 6 can move up and down axially relative to the lead screw 5, converting the rotational motion of the lead screw 5 into the linear motion of the pull rod 6. Therefore, when the motor 3 drives the lead screw 5 to rotate, the pull rod 6, threadedly engaged with the lead screw 5, can extend and retract axially relative to the lead screw 5, thereby realizing the extension and retraction function of the electric support rod 100.

[0047] It should be noted that the motor 3 can rotate forward and reverse, and the axial movement direction of the pull rod 6 can be adjusted by rotating the motor 3 forward or reverse, thereby realizing the axial extension and retraction of the electric strut 100. In the actual design, a wiring harness 14 can also be provided, which is electrically connected to the motor 3. The wiring harness 14 transmits electrical signals to the motor 3 to control the rotation direction of the motor 3 and the lead screw 5, thereby controlling the extension and retraction of the pull rod 6. Furthermore, it should be noted that in traditional electric struts, the space on the side of the motor away from the reducer in the mounting cavity is empty. However, in this application, the damper 2 is installed in the space on the side of the motor 3 away from the reducer 4, which can make good use of the unused axial space in the mounting cavity 113, thereby reducing the axial space originally occupied by the damper, and thus greatly reducing the axial space occupied in the main housing 1, which can effectively reduce the overall axial dimension of the electric strut 100.

[0048] According to an embodiment of the present invention, the electric strut 100, by setting a damper 2, a motor 3 and a reducer 4 arranged sequentially along the axial direction in the mounting cavity 113, and directly connecting the reducer 4 to the lead screw 5, eliminates the need for a coupling, thereby simplifying the overall structure of the electric strut 100, shortening the overall transmission path of the electric strut 100, greatly improving the transmission efficiency, and at the same time shortening the overall length of the electric strut 100, reducing the overall weight, which is conducive to its placement in places with limited space, and is flexible and convenient.

[0049] In some embodiments, the electric strut 100 further includes a connecting rod 7, one end of which is connected to the main housing 1. The connecting rod 7 is sleeved outside the pull rod 6, and the connecting rod 7 and the pull rod 6 slide in axial direction.

[0050] Specifically, such as Figure 2 and Figure 5As shown, the interior of the connecting rod 7 is hollow, used to install and protect the lead screw 5 and the pull rod 6. One end of the connecting rod 7 is connected to the main housing 1, making the connecting rod 7 and the main housing 1 a whole structure, thereby ensuring the overall stability of the electric support rod 100 structure, preventing swaying or tilting during movement, and ensuring the reliability of the extension and retraction movement of the pull rod 6. The shape and size of the connecting rod 7 are adapted to the pull rod 6, so that the connecting rod 7 can be sleeved on the outside of the pull rod 6 to support the pull rod 6 and ensure the reliability of the movement of the lead screw 5.

[0051] During actual operation, the connecting rod 7 remains stationary, while the lead screw 5 rotates, driving the pull rod 6 to perform axial linear motion. The pull rod 6 and the connecting rod 7 are in axial sliding engagement, meaning they can slide smoothly relative to each other. Therefore, when the pull rod 6 moves, it can slide linearly upwards or downwards relative to the connecting rod 7, achieving the telescopic movement of the electric support rod 100. Furthermore, the axial sliding engagement between the connecting rod 7 and the pull rod 6 also provides guidance and support for the movement of the pull rod 6, ensuring the stability and accuracy of the lead screw 5's movement.

[0052] like Figure 5 As shown, in the actual design, the main housing 1 may include an outer sleeve 111 and an inner sleeve 112. The inner sleeve 112 is fitted inside the outer sleeve 111, and the mounting cavity 113 is formed inside the inner sleeve 112.

[0053] In some embodiments, one of the inner peripheral wall of the connecting rod 7 and the outer peripheral wall of the pull rod 6 is provided with a guide protrusion 61 and the other is provided with a guide groove 71. That is, the inner peripheral wall of the connecting rod 7 may be provided with a guide protrusion 61 and the outer peripheral wall of the pull rod 6 may be provided with a guide groove 71. Alternatively, the inner peripheral wall of the connecting rod 7 may be provided with a guide groove 71 and the outer peripheral wall of the pull rod 6 may be provided with a guide protrusion 61. The guide protrusion 61 and the guide groove 71 slide in cooperation along the axial direction of the pull rod 6 to realize the relative movement of the pull rod 6 and the connecting rod 7, thereby realizing the telescopic movement of the electric strut 100.

[0054] Specifically, such as Figure 7As shown, a guide protrusion 61 protruding radially outward is provided on the outer peripheral wall of the pull rod 6 near the end position where it connects to the connecting rod 7. That is, the radial dimension of the guide protrusion 61 is larger than the radial dimension of the pull rod 6. A guide groove 71 with a shape and size that matches the guide protrusion 61 is provided on the inner peripheral wall of the connecting rod 7. The guide groove 71 extends through the connecting rod 7 axially. In actual installation, the guide protrusion 61 can be inserted into the guide groove 71 axially and slide along the guide groove 71, thereby realizing the sliding fit between the guide protrusion 61 and the guide groove 71 along the axial direction of the pull rod 6. This allows the guide protrusion 61 to slide smoothly in the guide groove 71, guiding and restricting the movement direction of the pull rod 6, and thus allowing the pull rod 6 to slide back and forth axially relative to the connecting rod 7, realizing axial extension and retraction.

[0055] like Figure 2 and Figure 3 As shown, when the pull rod 6 gradually moves away from the connecting rod 7 and closer to the reducer 4 (i.e., in the up-down direction as shown in the figure), the pull rod 6 moves upward and gradually extends out of the connecting rod 7 until it is almost completely separated from the connecting rod 7, thus achieving the extension of the pull rod 6. When the pull rod 6 gradually moves closer to the connecting rod 7 and closer to the reducer 4 (i.e., in the up-down direction as shown in the figure), the pull rod 6 moves downward and gradually extends into the connecting rod 7 until it is completely inside the connecting rod 7. At this time, the guide protrusion 61 slides to the end of the guide groove 71. Thus, the extension and retraction of the pull rod 6 is achieved through the sliding cooperation of the guide protrusion 61 and the guide groove 71.

[0056] In some embodiments, there are multiple guide protrusions 61 and guide grooves 71 that are matched one-to-one. That is, there can be two, three or more guide protrusions 61 and guide grooves 71. Each guide protrusion 61 can be inserted into each guide groove 71. The multiple guide protrusions 61 are spaced apart in the circumferential direction of the pull rod 6. That is, the multiple guide protrusions 61 can be evenly spaced on the outer peripheral wall of the pull rod 6, which is beneficial for guiding and supporting the movement of the pull rod 6 in all circumferential directions. In addition, the multiple guide protrusions 61 and guide grooves 71 can also achieve a tighter fit between the guide protrusions 61 and guide grooves 71. The outer peripheral wall of the guide protrusion 61 is pressed against the inner peripheral wall of the guide groove 71, which can prevent the pull rod 6 from rotating circumferentially and ensure the stability of the movement of the pull rod 6.

[0057] Specifically, such as Figure 7As shown, the outer peripheral wall of the pull rod 6 is provided with multiple guide protrusions 61, which cannot rotate. The inner peripheral wall of the connecting rod 7 is provided with multiple guide grooves 71. When the pull rod 6 is actually connected to the connecting part, the multiple guide protrusions 61 are inserted into the guide grooves 71, and the multiple guide protrusions 61 can slide smoothly axially within the multiple guide grooves 71. This helps to better guide the pull rod 6 to achieve precise and stable movement, and prevents the pull rod 6 from shaking or tilting during movement, which could lead to movement deviations.

[0058] It should be noted that an appropriate gap may be maintained between the guide protrusion 61 and the guide groove 71 to facilitate the sliding of the pull rod 6 within the connecting rod 7, but the gap should not be too large to prevent the pull rod 6 from wobbling.

[0059] In some embodiments, the damper 2 is integrated at the end of the motor 3 away from the reducer 4.

[0060] Integrating the damper 2 and the motor 3 into a single assembly improves the overall integration of the electric strut 100, reduces the space occupied by the damper 2, and makes the overall structure more compact. Figure 2 , Figure 13 and Figure 14 As shown, the damper 2 is integrated at the end of the motor 3 away from the reducer 4, that is, at the end of the motor 3 and connected to the shaft of the motor 3. Thus, the damping force generated by the damper 2 can better adjust and control the movement of the motor 3. Moreover, after the damping force passes through the motor 3, it can increase the torque through the reducer 4 to achieve the suspension of the electric strut 100, ensuring the reliability of the suspension.

[0061] In practical design, the damper 2 can be a viscous oil damper 2, which is connected to the motor shaft and can rotate with the motor shaft. The damper 2 is provided with a damper shell 21 which is inserted into the motor end cover, thus covering the damper 2. The inside of the damper shell 21 is filled with viscous oil, so the damper 2 can generate damping through the viscous resistance of the oil, thus hindering the movement of the motor 3. A sealing ring 22 can be provided at the connection between the motor 3 and the damper 2 to seal the viscous oil, prevent leakage, and ensure the continuous stability of the damping force.

[0062] In addition, such as Figure 11 and Figure 12 As shown, the end face of the reducer 4 can also be provided with a protruding small cylinder in the circumferential direction. The end face of the motor 3 near the reducer 4 is provided with a cylindrical groove that matches the small cylinder. The small cylinder can be snapped into the cylindrical groove, thereby realizing the connection between the reducer 4 and the motor 3.

[0063] In some embodiments, a bearing seat 8 is provided in the mounting cavity 113. The bearing seat 8 is located at the end of the reducer 4 away from the motor 3. One end of the lead screw 5 passes through the bearing seat 8 and is rotatably supported on the bearing seat 8 by the bearing 9.

[0064] Specifically, such as Figure 3 and Figure 4 As shown, a bearing housing 8 is provided inside the mounting cavity 113. The bearing housing 8 is located at the end of the reducer 4 away from the motor 3. The bearing 9 is installed in the bearing housing 8. The end of the lead screw 5 near the reducer 4 passes through the bearing housing 8 and is rotatably supported by the bearing housing 8 via the bearing 9, thus connecting with the reducer 4 to ensure the smoothness and accuracy of the lead screw 5's rotation. In actual design, the bearing housing 8 can be riveted to the main housing 1 to ensure the reliability of the connection between the two.

[0065] In some embodiments, the bearing 9 and the bearing housing 8 are axially limited by a first retaining ring 91, and / or the lead screw 5 and the bearing 9 are axially limited by a second retaining ring 92.

[0066] Specifically, such as Figure 4 As shown, a first retaining ring 91 groove is provided on the bearing housing 8. The first retaining ring 91 is ring-shaped and is engaged in the first retaining ring 91 groove, thereby making the outer ring of the bearing 9 axially limited to the bearing housing 8. By setting the first retaining ring 91, the axial movement and displacement of the outer ring of the bearing 9 can be restricted, ensuring that the bearing 9 is installed in a proper position in the bearing housing 8, preventing the bearing 9 from falling off and affecting the movement of the lead screw 5. A second retaining ring 92 groove is provided on the outer peripheral wall of the end of the lead screw 5 near the reducer 4. The second retaining ring 92 is ring-shaped and is engaged in the second retaining ring 92 groove, thereby making the inner ring of the bearing 9 axially limited to the lead screw 5. By setting the second retaining ring 92, the sliding and displacement of the inner ring of the bearing 9 along the axial direction of the lead screw 5 can be restricted, ensuring that the bearing 9 is stably installed on the lead screw 5, while preventing the lead screw 5 from axially moving or displacing, and ensuring the rotational stability of the lead screw 5.

[0067] In some embodiments, the reducer 4 is provided with an active locking tooth 41, and one end of the lead screw 5 is provided with a driven locking tooth 51 that meshes with the active locking tooth 41 for transmission. One end of the lead screw 5 is covered with a locking tooth sleeve 52 located between the driven locking tooth 51 and the active locking tooth 41.

[0068] Specifically, the reducer 4, near the end of the lead screw 5, has an internal active locking tooth 41. In actual design, the active locking tooth 41 can be constructed as a tooth protruding inward along the inner circumferential wall of the reducer 4, and is riveted to the lead screw 5. The lead screw 5, near the end of the reducer 4, has a driven locking tooth 51 on its outer circumference. The driven locking tooth 51 can rotate. In actual design, the driven locking tooth 51 can be constructed as a tooth protruding outward along the outer circumferential wall of the lead screw 5. The active locking tooth 41 and the driven locking tooth 51 can mesh with each other to achieve power transmission between the reducer 4 and the lead screw 5. A locking tooth sleeve 52 adapted to the driven locking tooth 51 can also be fitted on the outside of the driven locking tooth 51, so that when connecting the reducer 4 and the lead screw 5, such as Figure 10 As shown, the tooth retainer 52 is installed between the driven tooth 51 and the driving tooth 41 to prevent slippage between the driven tooth 51 and the driving tooth 41, ensuring that the reducer 4 accurately transmits power to the lead screw 5. At the same time, the tooth retainer 52 can absorb manufacturing tolerances and reduce vibration and noise.

[0069] Therefore, the reducer 4 and the lead screw 5 are directly connected through the active locking tooth 41 and the driven locking tooth 51 to transmit power, avoiding the use of a coupling for connection, thereby improving transmission efficiency, shortening the transmission path, and reducing the overall length of the electric strut 100, making it convenient to install in a small space.

[0070] It should be noted that the shape and structure of the active locking tooth 41 and the driven locking tooth 51 are not limited to those described in this embodiment and shown in the accompanying drawings. They can also be constructed as helical teeth, straight teeth, and other tooth profiles, as long as they can realize the power transmission between the reducer 4 and the lead screw 5.

[0071] In some embodiments, the electric strut 100 further includes a first ball socket structure 12 and a second ball socket structure 13. The first ball socket structure 12 is hinged to the end of the main housing 1 away from the lead screw 5, and the second ball socket structure 13 is hinged to the end of the pull rod 6 away from the main housing 1.

[0072] like Figure 1 and Figure 2 As shown, the first ball socket structure 12 is installed at the end of the main housing 1 away from the lead screw 5, and the second ball socket structure 13 is installed at the end of the pull rod 6 away from the lead screw 5. By setting the first ball socket structure 12 and the second ball socket structure 13, the end of the main housing 1 away from the lead screw 5 and the end of the pull rod 6 away from the main housing 1 can rotate flexibly, so that the electric strut 100 can be flexibly applied in many scenarios. In practice, the other end of the first ball socket structure 12 and the second ball socket structure 13 can be connected to two other components, so that the flexible movement between the two components can be realized through the extension and retraction movement of the electric strut 100, such as moving closer or further away, opening or closing, etc.

[0073] In actual design, a sealing gasket 15 can be provided at the connection between the first ball socket structure 12 and the second ball socket structure 13 and the main housing 1 to achieve a tight connection.

[0074] Among them, one of the first ball socket structure 12 and the second ball socket structure 13 is adapted to be connected to the vehicle body 200 and the other is adapted to be connected to the tailgate 300.

[0075] like Figure 6 As shown, the first ball joint structure 12 is connected to the vehicle body 200 and the tailgate 30. Through the axial extension and retraction of the pull rod 6, the tailgate 300 can move closer to and further away from the vehicle body 200, thereby opening and closing the tailgate 300. Specifically, when the tailgate 300 is closed, the electric support rod 100 is in a retracted state, that is, the pull rod 6 extends into the connecting rod 7. When the tailgate 300 is open, the electric support rod 100 is in an extended state, that is, the pull rod 6 extends out from the connecting rod 7.

[0076] The present invention also proposes a vehicle.

[0077] The vehicle according to an embodiment of the present invention is equipped with an electric strut 100 according to any of the above embodiments. By arranging a damper 2, a motor 3, and a reducer 4 sequentially distributed along the axial direction within the mounting cavity 113, and directly connecting the reducer 4 to the lead screw 5, the use of a coupling is eliminated. This simplifies the overall structure of the electric strut 100, shortens the overall transmission path of the electric strut 100, greatly improves transmission efficiency, and simultaneously reduces the overall length and weight of the electric strut 100, making it suitable for placement in confined spaces with flexibility and convenience.

[0078] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. 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.

[0079] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electric strut, characterized in that, include: The main housing has an axially extending mounting cavity, in which a damper, a motor, and a reducer are arranged sequentially along the axial direction. A lead screw, one end of which extends into the mounting cavity, is located at the end of the reducer away from the motor, and the reducer is used to power connect the motor and the lead screw to drive the lead screw to rotate; A pull rod, at least a portion of which is sleeved around the lead screw and threadedly engaged with the lead screw; The damper is integrated at the end of the motor that is away from the reducer; The damper is a viscous oil damper, connected to the motor shaft and rotating with it. A damper housing is installed on the outside of the damper and inserted into the motor end cover, covering the damper. The inside of the damper housing is filled with viscous oil. The damper generates damping through the viscous resistance of the oil, hindering the movement of the motor. A sealing ring is provided at the connection between the motor and the damper to seal the viscous oil.

2. The electric strut according to claim 1, characterized in that, It also includes a connecting rod, one end of which is connected to the main housing. The connecting rod is sleeved outside the pull rod, and the connecting rod and the pull rod slide together axially.

3. The electric strut according to claim 2, characterized in that, One of the inner peripheral wall of the connecting rod and the outer peripheral wall of the pull rod is provided with a guide protrusion and the other is provided with a guide groove. The guide protrusion and the guide groove slide in cooperation along the axial direction of the pull rod.

4. The electric strut according to claim 3, characterized in that, The guide protrusions and guide grooves are multiple and correspond to each other, with the multiple guide protrusions spaced apart in the circumferential direction of the pull rod.

5. The electric strut according to claim 1, characterized in that, The mounting cavity is provided with a bearing seat, which is located at the end of the reducer away from the motor. One end of the lead screw passes through the bearing seat and is supported by the bearing seat through the bearing rotation.

6. The electric strut according to claim 5, characterized in that, The bearing and the bearing housing are axially limited by a first retaining ring, and / or the lead screw and the bearing are axially limited by a second retaining ring.

7. The electric strut according to claim 1, characterized in that, The reducer is provided with an active locking tooth, and one end of the lead screw is provided with a driven locking tooth that meshes with the active locking tooth for transmission. One end of the lead screw is covered with a locking tooth sleeve located between the driven locking tooth and the active locking tooth.

8. The electric strut according to claim 1, characterized in that, It also includes a first ball-and-socket structure and a second ball-and-socket structure, wherein the first ball-and-socket structure is hinged to the end of the main housing opposite to the lead screw, and the second ball-and-socket structure is hinged to the end of the pull rod opposite to the main housing; In this configuration, one of the first ball-and-socket structure and the second ball-and-socket structure is adapted to be connected to the vehicle body and the other is adapted to be connected to the tailgate.

9. A vehicle, characterized in that, The device is equipped with an electric strut as described in any one of claims 1-8.

Images