Electric struts and vehicles

Abstract

The present invention discloses an electric strut and a vehicle. The electric strut includes: a drive motor; a screw rod, one end of which is connected to the output shaft of the drive motor; a sleeve, which is sleeved outside the screw rod and cooperates with the screw rod thread, and the sleeve is movable along the length direction of the screw rod; a first ball socket head, which is connected to the end of the sleeve away from the drive motor, and the first ball socket head is provided with an induction switch suitable for abutting against the end of the screw rod away from the drive motor; and a second ball socket head, which is connected to the end of the drive motor away from the output shaft. According to the electric strut of the present invention, the actual stroke position of the electric strut when resetting can be accurately controlled, so that the opening and closing device of the vehicle controlled by the electric strut is in a fully closed state, and there is no need to set door locks or additional switches and other parts to control the closing of the vehicle's opening and closing device, thereby saving space.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts, and in particular to an electric strut and a vehicle. Background Art

[0002] At present, the electric struts on the market all use the Hall signal of the Hall motor to control the stroke position of the electric struts. However, since there will always be some deviations in the Hall signal during the multiple cycles of reciprocating motion of the motor, the actual stroke position of the electric struts cannot be controlled very accurately. Therefore, it is necessary to combine external door lock signals or external switch signals to achieve accurate control of the position stroke of the electric struts.

[0003] However, in actual project development and application, there are always many situations where there is no space on the carrier to arrange and install door locks or additional switches and other parts, resulting in the problem that the position stroke of the electric strut cannot be accurately controlled. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an electric strut whose actual travel position during reset can be precisely controlled, thereby maintaining a fully closed position of the vehicle's opening and closing device controlled by the electric strut. This eliminates the need for door locks or additional switches to control the closing of the vehicle's opening and closing device, thereby saving space.

[0005] The present invention also provides a vehicle, comprising the above-mentioned electric strut.

[0006] According to an embodiment of the present invention, the electric support rod includes: a drive motor; a screw rod, one end of which is connected to the output shaft of the drive motor; a sleeve, the sleeve is sleeved outside the screw rod and is threadedly engaged with the screw rod, and the sleeve is movable along the length direction of the screw rod; a first ball socket head, the first ball socket head is connected to the end of the sleeve away from the drive motor, and the first ball socket head is provided with an induction switch suitable for stopping with the end of the screw rod away from the drive motor; and a second ball socket head, the second ball socket head is connected to the end of the drive motor away from the output shaft.

[0007] According to the electric strut of the embodiment of the present invention, a driving motor is provided, a screw rod is provided at one end of the output shaft of the driving motor, and a sleeve is provided to be sleeved outside the screw rod and cooperate with the screw rod thread, and the sleeve is movable along the length direction of the screw rod, and a first ball socket head is provided at the end of the sleeve away from the driving motor, and an induction switch is provided on the first ball socket head. When the induction switch and the end of the screw rod away from the driving motor are stopped, the driving motor stops working, thereby achieving precise control of the actual stroke position of the electric strut when resetting, so that the opening and closing device of the vehicle controlled by the electric strut is in a completely closed state, and there is no need to set door locks or additional switches and other parts to control the closing of the vehicle's opening and closing device, thereby saving space.

[0008] In some embodiments of the present invention, the electric support rod further includes a reduction gearbox, the input shaft of the reduction gearbox is connected to the output shaft of the drive motor, and the output shaft of the reduction gearbox is connected to the end of the screw rod away from the first ball head.

[0009] In some embodiments of the present invention, a side of the first ball socket head facing the screw rod has a mounting portion, and the induction switch is disposed in the mounting portion.

[0010] In some embodiments of the present invention, a fixed piston is provided in the mounting portion, a side of the fixed piston facing the screw rod has a receiving groove, and the induction switch is provided in the receiving groove.

[0011] In some embodiments of the present invention, the induction switch is clamped in the accommodating groove, and a through hole for a wiring harness of the induction switch to pass through is provided on a bottom wall of the accommodating groove.

[0012] In some embodiments of the present invention, a first elastic member is provided in the mounting portion, and the first elastic member is located between the fixed piston and the bottom wall of the mounting portion to drive the fixed piston to move toward the opening of the mounting portion.

[0013] In some embodiments of the present invention, a limiting groove, a guide groove and an annular groove extending along the circumferential direction of the mounting portion are provided on the inner side wall of the mounting portion, the guide groove and the limiting groove are located on the side of the annular groove facing the opening of the mounting portion and are connected to the annular groove, the limiting groove and the guide groove are spaced apart in the circumferential direction of the mounting portion, the guide groove extends away from one end of the annular groove to the opening of the mounting portion, a limiting protrusion is provided on the outer peripheral wall of the fixed piston, the limiting protrusion is suitable for entering the annular groove along the guide groove, and entering the limiting groove after rotating in the annular groove, and the side wall of the limiting groove close to the opening of the mounting portion is constructed as a limiting structure.

[0014] In some embodiments of the present invention, the end of the first ball head facing the screw rod has a connecting protrusion, the connecting protrusion extends into the sleeve and is connected to the sleeve through a sleeve thread, and the mounting portion is provided on the connecting protrusion.

[0015] In some embodiments of the present invention, the electric support rod also includes a second elastic member, which is sleeved outside the sleeve, and one end of the second elastic member close to the drive motor is fixed relative to the drive motor, and one end of the second elastic member away from the drive motor is stopped against the first ball head to support the first ball head.

[0016] In some embodiments of the present invention, the electric support rod also includes an inner tube, which is sleeved outside the sleeve, and the second elastic member is sleeved outside the inner tube. One end of the inner tube is fixed relative to the drive motor, and the end of the second elastic member away from the first ball head is fixedly connected or stopped with the inner tube.

[0017] In some embodiments of the present invention, the electric support rod further includes an outer tube, which is sleeved outside the second elastic member, and one end of the outer tube is connected to the first ball head.

[0018] In some embodiments of the present invention, the driving motor has a power cord, and a sheath is provided on the outer surface of the power cord.

[0019] In some embodiments of the present invention, the electric support rod further includes a motor outer protective tube, which is sleeved outside the driving motor and has one end connected to the second ball socket head.

[0020] In some embodiments of the present invention, the electric strut further includes a strut outer protective tube, which is sleeved outside the sleeve and has one end connected to an end of the motor outer protective tube away from the second ball socket head.

[0021] According to an embodiment of the present invention, the vehicle includes: a vehicle body having a luggage compartment; a cover plate rotatably provided on the vehicle body to open or close the luggage compartment; the above-mentioned electric strut, the first ball head is rotatably connected to the cover plate, and the second ball head is rotatably connected to the vehicle body.

[0022] According to the vehicle of the embodiment of the present invention, the above-mentioned electric strut is provided, a driving motor is provided, a screw is provided at one end of the output shaft of the driving motor, and a sleeve is provided to be sleeved outside the screw and cooperate with the screw thread, and the sleeve is movable along the length direction of the screw, and a first ball socket is provided at the end of the sleeve away from the driving motor, and an induction switch is provided on the first ball socket. When the induction switch and the end of the screw away from the driving motor are stopped, the driving motor stops working, thereby achieving precise control of the actual stroke position of the electric strut when resetting, so that the opening and closing device of the vehicle controlled by the electric strut is in a completely closed state, and there is no need to provide door locks or additional switches and other parts to control the closing of the vehicle's opening and closing device, thereby saving space.

[0023] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0025] Figure 1 is an exploded view of an electric strut according to an embodiment of the present invention;

[0026] Figure 2 is a cross-sectional view of an electric strut according to an embodiment of the present invention;

[0027] Figure 3 is a partial cross-sectional view of an electric strut according to an embodiment of the present invention;

[0028] Figure 4 is a schematic diagram of a first ball socket head of an electric strut according to an embodiment of the present invention;

[0029] Figure 5 2 is a schematic diagram of a first ball-and-socket head of an electric strut according to an embodiment of the present invention, wherein the induction switch, the fixed piston and the first elastic member are not shown;

[0030] Figure 6 is a schematic diagram of a fixed piston and a sensing switch of a first ball-and-socket head of an electric strut according to an embodiment of the present invention;

[0031] Figure 7 Schematic diagram of a fixed piston of a first ball-and-socket head of an electric strut according to an embodiment of the present invention, wherein the induction switch is not shown;

[0032] Figure 8 is a schematic diagram of an induction switch of a first ball socket head of an electric strut according to an embodiment of the present invention;

[0033] Figure 9is a schematic diagram of a first elastic member of a first ball-and-socket head of an electric strut according to an embodiment of the present invention;

[0034] Figure 10 2 is a schematic diagram of a mounting portion of a first ball joint of an electric strut according to an embodiment of the present invention.

[0035] Reference numerals:

[0036] 10. Electric struts;

[0037] 1. First ball-socket head; 11. Fixed piston; 111. Accommodating groove; 1111. Through hole; 112. Limiting protrusion; 12. Inductive switch; 121. Switch plug; 13. First elastic member; 14. Connecting protrusion; 141. Mounting portion; 1411. Limiting groove; 1412. Guide groove; 1413. Annular groove;

[0038] 2. Drive motor; 21. Power cord; 22. Power plug; 23. Sheath;

[0039] 3. Screw;

[0040] 4. Casing; 41. Casing thread; 42. External spline;

[0041] 5. The second ball-shaped head;

[0042] 6. Reducer;

[0043] 7. Inner tube;

[0044] 8. a second elastic member;

[0045] 9. Motor outer protective tube;

[0046] 101. External protective tube of support pole;

[0047] 102. Outer tube; 1021. Annular connecting portion. DETAILED DESCRIPTION

[0048] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0050] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0051] Reference below Figures 1-10 A powered strut 10 according to an embodiment of the present invention is described.

[0052] like Figure 1 As shown, the electric strut 10 according to an embodiment of the present invention includes a drive motor 2, a screw rod 3, a sleeve 4 and a first ball head 1.

[0053] Specifically, refer to Figure 1 One end of the screw rod 3 is connected to the output shaft of the drive motor 2, and the sleeve 4 is sleeved on the outside of the screw rod 3 and threadedly engaged with the screw rod 3. The sleeve 4 is movable along the length of the screw rod 3. It can be understood that the output shaft of the drive motor 2 drives the screw rod 3 to rotate, and the sleeve 4 is connected to other components of the electric support rod 10 to limit the sleeve 4 so that the sleeve 4 is circumferentially fixed, thereby allowing the sleeve 4 to move along the length of the screw rod 3.

[0054] Furthermore, the first ball head 1 is fixedly connected to the end of the sleeve 4 facing away from the drive motor 2, whereby the sleeve 4 can drive the first ball head 1 to move closer to or away from the screw rod 3 along the length direction of the screw rod 3. When the first ball head 1 is connected to the opening and closing device of the vehicle, the electric support rod 10 can drive the opening and closing of the opening and closing device.

[0055] Furthermore, the first ball head 1 is provided with an induction switch 12 suitable for abutting against the end of the screw rod 3 away from the drive motor 2. When the induction switch 12 abuts against the end of the screw rod 3 away from the drive motor 2, the opening and closing device of the vehicle controlled by the electric strut 10 is in a fully closed state, and the drive motor 2 is controlled to stop working.

[0056] Therefore, when the drive motor 2 controls the lead screw 3 to rotate in the direction of making the drive sleeve 4 close to the drive motor 2 according to the inherent control parameters, the first ball head 1 will move close to the lead screw 3 along the length direction of the lead screw 3. When the first ball head 1 moves to the stop position of the induction switch 12 and the end of the lead screw 3 away from the drive motor 2, the drive motor 2 receives the stop signal from the induction switch 12, and the drive motor 2 stops working, thereby realizing precise control of the actual stroke position of the electric strut 10 when resetting, so that the opening and closing device of the vehicle controlled by the electric strut 10 is in a completely closed state, and there is no need to set door locks or additional switches and other parts to control the closing of the vehicle's opening and closing device, saving space.

[0057] According to the electric strut 10 of the embodiment of the present invention, a driving motor 2 is provided, a screw rod 3 is provided at one end of the output shaft of the driving motor 2, and a sleeve 4 is provided to be sleeved outside the screw rod 3 and threadedly matched with the screw rod 3, and the sleeve 4 is movable along the length direction of the screw rod 3, and a first ball socket head 1 is provided at the end of the sleeve 4 away from the driving motor 2, and an induction switch 12 is provided on the first ball socket head 1. When the induction switch 12 stops at the end of the screw rod 3 away from the driving motor 2, the driving motor 2 stops working, thereby accurately controlling the actual stroke position of the electric strut 10 when resetting, so that the opening and closing device of the vehicle controlled by the electric strut 10 is in a fully closed state, and there is no need to set door locks or additional switches and other parts to control the closing of the vehicle's opening and closing device, thereby saving space.

[0058] In some embodiments of the present invention, Figure 1 As shown, the electric strut 10 further includes a reduction gearbox 6, the input shaft of which is connected to the output shaft of the drive motor 2, and the output shaft of which is connected to the end of the screw rod 3 that is away from the first ball-and-socket head 1. The reduction gearbox 6 is used to reduce the speed of the drive motor 2 and increase the torque, thereby slowing down the speed of the screw rod 3 and obtaining a higher torque, which can provide sufficient supporting force to the first ball-and-socket head 1, thereby enabling the electric strut 10 to have sufficient supporting force to support the vehicle's opening and closing device.

[0059] In some embodiments of the present invention, Figure 4 and Figure 5 As shown, the first ball socket head 1 has a mounting portion 141 on one side facing the screw rod 3, and the induction switch 12 is arranged in the mounting portion 141. Thus, the induction switch 12 is placed in the first ball socket head 1, so that the induction switch 12 is protected.

[0060] In some embodiments of the present invention, Figure 4 and Figure 7 As shown, a fixed piston 11 is provided in the mounting portion 141. The side of the fixed piston 11 facing the screw rod 3 has a receiving groove 111, and the sensor switch 12 is disposed in the receiving groove 111. Since the shape of the mounting portion 141 is not easily changed after manufacture, the fixed piston 11 is provided to accommodate the sensor switch 12 to facilitate removal and replacement of the sensor switch 12. At the same time, if it is necessary to install a sensor switch 12 of a different model and size, this can be achieved by replacing the fixed piston 11 with a receiving groove 111 of a different size without changing the shape of the mounting portion 141.

[0061] In some embodiments of the present invention, Figure 6 、 Figure 7 and Figure 8 As shown, the sensor switch 12 is snapped into the receiving groove 111, so that the sensor switch 12 is fixed in the receiving groove 111 and prevented from being separated from the receiving groove 111. Furthermore, a through hole 1111 is provided on the bottom wall of the receiving groove 111 for the wiring harness of the sensor switch 12 to pass through. Thus, the wiring harness of the sensor switch 12 can be connected to the switch plug 121 through the through hole 1111, thereby ensuring the normal operation of the sensor switch 12.

[0062] In some embodiments of the present invention, Figure 5 As shown, the inner side wall of the mounting portion 141 has a limiting structure for limiting the movement of the fixed piston 11 toward the opening of the mounting portion 141 , thereby preventing the fixed piston 11 from sliding out of the mounting portion 141 .

[0063] Furthermore, if Figure 3 and Figure 9 As shown, a first elastic member 13 is provided in the mounting portion 141. The first elastic member 13 is located between the fixed piston 11 and the bottom wall of the mounting portion 141 to drive the fixed piston 11 to move toward the opening of the mounting portion 141. It is understandable that when the lead screw 3 and the sensor switch 12 come into contact, the first elastic member 13 can act as a buffer to prevent the sensor switch 12 from being damaged by excessive impact force. At the same time, when the lead screw 3 and the sensor switch 12 abut against each other, the first elastic member 13 can cause the sensor switch 12 to have a tendency to move toward the opening of the mounting portion 141, that is, to have a tendency to move toward the lead screw 3 (the opening of the mounting portion 141 is toward the lead screw 3), thereby ensuring that the lead screw 3 and the sensor switch 12 are firmly abutted against each other.

[0064] In some embodiments of the present invention, Figure 5 and Figure 6As shown, a limiting groove 1411, a guide groove 1412 and an annular groove 1413 extending along the circumferential direction of the mounting portion 141 are provided on the inner side wall of the mounting portion 141. The guide groove 1412 and the limiting groove 1411 are located on the side of the annular groove 1413 opening toward the mounting portion 141 and are connected to the annular groove 1413. The limiting groove 1411 and the guide groove 1412 are spaced apart in the circumferential direction of the mounting portion 141. The guide groove 1412 extends from one end of the annular groove 1413 to the opening of the mounting portion 141. A limiting protrusion 112 is provided on the outer peripheral wall of the fixed piston 11. The limiting protrusion 112 is suitable for entering the annular groove 1413 along the guide groove 1412, and entering the limiting groove 1411 after rotating in the annular groove 1413. The side wall of the limiting groove 1411 close to the opening of the mounting portion 141 is constructed as a limiting structure.

[0065] It can be understood that the fixed piston 11 enters the mounting portion 141 through the cooperation of the limiting protrusion 112 and the guide groove 1412, and the annular groove 1413 is used to connect the guide groove 1412 and the limiting groove 1411, so that the limiting protrusion 112 of the fixed piston 11 enters the limiting groove 1411 through the annular groove 1413. Since the side wall of the limiting groove 1411 close to the opening of the mounting portion 141 is constructed as a limiting structure, the limiting protrusion 112 and the limiting structure cooperate to limit the fixed piston 11 from sliding out of the mounting portion 141.

[0066] In addition, if Figure 10 As shown, there are multiple limiting protrusions 112, and there are corresponding multiple guide grooves 1412 and limiting grooves 1411. The cooperation of multiple limiting grooves 1411 and multiple limiting protrusions 112 makes it easier to limit the fixed piston 11 from sliding out of the mounting portion 141. Figure 10 In the illustrated example, there are two limiting protrusions 112, and two corresponding guide grooves 1412 and limiting grooves 1411. The two guide grooves 1412 are disposed opposite each other, and the two limiting grooves 1411 are also disposed opposite each other. Furthermore, the line connecting the two guide grooves 1412 is perpendicular to the line connecting the two limiting grooves 1411. This means that after the fixed piston 11 enters the annular groove 1413 along the guide grooves 1412, the fixed piston 11 only needs to be rotated 90° to engage the limiting protrusions 112 and the limiting grooves 1411, thereby retaining the fixed piston 11 within the mounting portion 141. However, the present invention is not limited to this embodiment. The number of limiting protrusions 112 and the number of corresponding guide grooves 1412 and limiting grooves 1411 may be greater, such as three, four, five, or six.

[0067] In some embodiments of the present invention, Figure 3 and Figure 4As shown, the end of the first ball-and-socket head 1 facing the screw rod 3 has a connecting protrusion 14, which extends into the sleeve 4 and is connected to the sleeve thread 41. The mounting portion 141 is provided on the connecting protrusion 14. As a result, the connection reliability between the first ball-and-socket head 1 and the sleeve 4 is improved. At the same time, since the mounting portion 141 is provided on the connecting protrusion 14, and the connecting protrusion 14 extends into the sleeve 4, and the inductive switch 12 is provided on the mounting portion 141, it is easier for the inductive switch 12 to contact the screw rod 3. In addition, in the present invention, the connection method between the connecting protrusion 14 and the sleeve 4 is not limited to a threaded connection, and can also be connected in the form of a pin shaft or a limit block.

[0068] In some embodiments of the present invention, Figure 1 、 Figure 2 and Figure 3 As shown, the electric support rod 10 also includes a second elastic member 8, which is sleeved outside the sleeve 4. The end of the second elastic member 8 close to the drive motor 2 is fixed relative to the drive motor 2, and the end of the second elastic member 8 away from the drive motor 2 is stopped against the first ball socket 1 to support the first ball socket 1.

[0069] Among them, the second elastic member 8 is always in a contracted state, and the end of the second elastic member 8 close to the drive motor 2 can be connected and fixed to the reduction gear 6, so that the end of the second elastic member 8 close to the drive motor 2 is fixed relative to the drive motor 2. When the reduction gear 6 is not assembled, the end of the second elastic member 8 close to the drive motor 2 can be connected to the drive motor 2, so that the end of the second elastic member 8 close to the drive motor 2 is fixed relative to the drive motor 2.

[0070] It can be understood that since the second elastic member 8 is always in a compressed state, the second elastic member 8 always has a tendency to stretch, thereby achieving a stop with the first ball head 1 to support the first ball head 1, thereby reducing the load of the drive motor 2 and improving the service life of the drive motor 2.

[0071] In some embodiments of the present invention, Figure 1 、 Figure 2 and Figure 3 As shown, the electric strut 10 further includes an inner tube 7, which is sleeved on the outside of the sleeve 4, and a second elastic member 8 is sleeved on the outside of the inner tube 7. One end of the inner tube 7 is fixed relative to the drive motor 2, and the end of the second elastic member 8 away from the first ball head 1 is fixedly connected to or abutted against the inner tube 7. The end of the inner tube 7 close to the drive motor 2 is connected to the reduction gearbox 6, thereby achieving the fixation of the inner tube 7 relative to the drive motor 2. When the reduction gearbox 6 is not assembled, the end of the inner tube 7 close to the drive motor 2 can also be connected to the drive motor 2, thereby achieving the fixation of the inner tube 7 relative to the drive motor 2.

[0072] It is understandable that the inner tube 7 is used to block the second elastic member 8 and the sleeve 4, preventing the second elastic member 8 from affecting the sleeve 4. At the same time, the inner tube 7 serves as a base and guide rail for the second elastic member 8, allowing the second elastic member 8 to contract and extend along the length direction of the inner tube 7.

[0073] Furthermore, if Figure 1 As shown, the end of the sleeve 4 close to the drive motor 2 has an external spline 42, and the inner wall of the inner tube 7 has an internal spline (not shown in the figure) that matches the external spline 42. The internal spline extends along the length direction of the inner tube 7. At the same time, since the inner tube 7 is fixed relative to the drive motor 2, the external spline 42 on the sleeve 4 and the internal spline on the inner wall of the inner tube 7 match, so that the sleeve 4 remains circumferentially fixed. When the screw rod 3 rotates, the sleeve 4 will not rotate with the screw rod 3, so that the sleeve 4 moves along the length direction of the inner tube 7.

[0074] In some embodiments of the present invention, Figure 1 and Figure 3 As shown, the electric strut 10 further includes an outer tube 102 , which is sleeved outside the second elastic member 8 , and one end of the outer tube 102 is connected to the first ball head 1 .

[0075] It is understood that the outer tube 102 is used to protect the second elastic member 8. The end of the outer tube 102 near the first ball socket 1 has an annular connecting portion 1021. The radial outer end of the annular connecting portion 1021 is connected to the inner circumferential wall of the outer tube 102. The surface of the annular connecting portion 1021 near the first ball socket 1 is used to connect to the first ball socket 1, and the surface of the annular connecting portion 1021 away from the first ball socket 1 is used to abut or connect with the second elastic member 8. This limits the extension of the second elastic member 8, keeps the second elastic member 8 in a compressed state, and provides support for the first ball socket 1.

[0076] Furthermore, because one end of the outer tube 102 is connected to the first ball socket 1 and the other end is unconstrained, the first ball socket 1 can drive the outer tube 102 to move along the length of the screw rod 3. When the first ball socket 1 moves away from the drive motor 2 along the length of the screw rod 3, the second elastic member 8 extends (but is still in a compressed state), providing the outer tube 102 with a force to move away from the drive motor 2 along the length of the screw rod 3, thereby providing assistance to the first ball socket 1 to move away from the screw rod 3 along the length of the screw rod 3, reducing the load on the drive motor 2 and improving the service life. When the first ball socket 1 moves closer to the screw rod 3 along the length of the screw rod 3, the first ball socket 1 drives the outer tube 102 to move closer to the drive motor 2 along the length of the screw rod 3, thereby compressing the second elastic member 8, causing the second elastic member 8 to return to the compressed state, preparing to provide assistance for the next movement of the first ball socket 1.

[0077] In some embodiments of the present invention, Figure 1 As shown, the drive motor 2 has a power line 21, which is used to supply power to the drive motor 2 to ensure the operation of the drive motor 2. The power line 21 is provided with a sheath 23, which is used to isolate the power line 21 from the outside world, thereby protecting the power line 21 and also providing insulation to prevent leakage.

[0078] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the electric strut 10 further includes a motor outer protective tube 9, which is sleeved outside the drive motor 2 and connected at one end to the second ball-socket joint 5. Thus, the motor outer protective tube 9 can protect the internal structure, and the second ball-socket joint 5 can block one end of the motor outer protective tube 9, further protecting the structures inside the motor outer protective tube 9, such as the drive motor 2.

[0079] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the electric strut 10 further includes a strut outer protective tube 101, which is sleeved outside the outer tube 102 and has one end connected to the end of the motor outer protective tube 9 away from the second ball-socket joint 5. The strut outer protective tube 101 is used to protect internal structures such as the sleeve 4, and because one end of the strut outer protective tube 101 is connected to the end of the motor outer protective tube 9 away from the second ball-socket joint 5, the structure within the strut outer protective tube 101 and the structure of the motor outer protective tube 9 are integrated, thereby improving the integrity of the electric strut 10 and the sealing performance of the electric strut 10, thereby increasing the service life of the electric strut 10.

[0080] In addition, the positional relationship between the support rod outer protective tube 101, the second elastic member 8, the outer tube 102 and the inner tube 7 is as follows: the support rod outer protective tube 101 is sleeved on the outside of the outer tube 102, and the outer tube 102 is movable along the length direction of the support rod outer protective tube 101, the outer tube 102 is sleeved on the outside of the second elastic member 8, and the second elastic member 8 is sleeved on the outside of the inner tube 7.

[0081] Next, a vehicle according to an embodiment of the present invention will be described.

[0082] A vehicle according to an embodiment of the present invention includes a vehicle body, a cover, and the aforementioned electric strut 10. The vehicle body has a luggage compartment, and the cover is rotatably mounted on the vehicle body to open or close the luggage compartment. A first ball joint 1 is rotatably connected to the cover, and a second ball joint 5 is rotatably connected to the vehicle body. The electric strut 10 can be used to support the cover when the cover opens the luggage compartment. The aforementioned vehicle opening and closing device can be the luggage compartment cover.

[0083] It can be understood that the second ball head 5 remains fixed to the vehicle body, and the first ball head 1 can drive the cover to open or close the luggage compartment. When the first ball head 1 moves away from the screw rod 3 along the length direction of the screw rod 3, it drives the cover to open the luggage compartment. When the first ball head 1 moves closer to the screw rod 3 along the length direction of the screw rod 3, it drives the cover to close the luggage compartment, thereby realizing the electric support rod 10 controlling the cover to open or close the luggage compartment.

[0084] In addition, the electric strut 10 in the present invention is not limited to driving the cover to open or close the luggage compartment. The electric strut 10 can also be used to drive the door to open or close.

[0085] According to the vehicle of an embodiment of the present invention, the above-mentioned electric strut 10 is set, a screw rod 3 is set at one end of the output shaft of the drive motor 2, and a sleeve 4 is set to be sleeved on the outside of the screw rod 3 and threadedly matched with the screw rod 3, and the sleeve 4 is movable along the length direction of the screw rod 3, and a first ball socket head 1 is set at the end of the sleeve 4 away from the drive motor 2, and an induction switch 12 is set on the first ball socket head 1. When the induction switch 12 stops at the end of the screw rod 3 away from the drive motor 2, the drive motor 2 stops working, thereby realizing precise control of the actual stroke position of the electric strut 10 when resetting, so that the opening and closing device of the vehicle controlled by the electric strut 10 is in a fully closed state, and there is no need to set door locks or additional switches and other parts to control the closing of the vehicle's opening and closing device, thereby saving space.

[0086] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses 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 any one or more embodiments or examples.

[0087] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. An electric support rod, characterized in that: include: Drive motor; a screw rod, one end of which is connected to the output shaft of the drive motor; A sleeve, which is sleeved outside the screw rod and is threadably engaged with the screw rod, and is movable along the length direction of the screw rod; a first ball-and-socket head connected to an end of the sleeve facing away from the drive motor, the first ball-and-socket head being provided with an inductive switch adapted to abut against an end of the screw rod facing away from the drive motor, the first ball-and-socket head having a mounting portion on a side facing the screw rod, the inductive switch being disposed in the mounting portion, the mounting portion being provided with a fixed piston, the fixed piston having a receiving groove on a side facing the screw rod, the inductive switch being disposed in the receiving groove; a second ball-and-socket joint connected to an end of the drive motor away from the output shaft; A reduction box, wherein the input shaft of the reduction box is connected to the output shaft of the drive motor, and the output shaft of the reduction box is connected to the end of the screw rod away from the first ball head.

2. The electric strut according to claim 1, characterized in that The induction switch is clamped in the accommodating groove, and a through hole for the wiring harness of the induction switch to pass through is provided on the bottom wall of the accommodating groove.

3. The electric strut according to claim 1, characterized in that A first elastic member is provided in the mounting portion. The first elastic member is located between the fixed piston and the bottom wall of the mounting portion. The first elastic member is used to drive the fixed piston to move toward the opening of the mounting portion.

4. The electric strut according to claim 3, characterized in that: A limiting groove, a guide groove and an annular groove extending along the circumferential direction of the mounting portion are provided on the inner side wall of the mounting portion, the guide groove and the limiting groove are located on the side of the annular groove facing the opening of the mounting portion and are connected to the annular groove, the limiting groove and the guide groove are spaced apart in the circumferential direction of the mounting portion, the guide groove extends to the opening of the mounting portion away from one end of the annular groove, a limiting protrusion is provided on the outer peripheral wall of the fixed piston, the limiting protrusion is suitable for entering the annular groove along the guide groove, and entering the limiting groove after rotating in the annular groove, and the side wall of the limiting groove close to the opening of the mounting portion is constructed as a limiting structure.

5. The electric strut according to claim 1, characterized in that: One end of the first ball head facing the screw rod is provided with a connecting protrusion, the connecting protrusion extends into the sleeve and is connected to the sleeve through a sleeve thread, and the mounting portion is provided on the connecting protrusion.

6. The electric strut according to claim 1, characterized in that Also includes: A second elastic member is sleeved outside the sleeve, one end of the second elastic member close to the drive motor is fixed relative to the drive motor, and one end of the second elastic member away from the drive motor abuts against the first ball socket to support the first ball socket.

7. The electric strut according to claim 6, characterized in that: Also includes: An inner tube is sleeved on the outside of the sleeve, the second elastic member is sleeved on the outside of the inner tube, one end of the inner tube is fixed relative to the drive motor, and the end of the second elastic member away from the first ball head is fixedly connected or stopped with the inner tube.

8. The electric strut according to claim 6, characterized in that: Also includes: An outer tube is sleeved on the outside of the second elastic member, and one end of the outer tube is connected to the first ball socket head.

9. The electric strut according to claim 1, characterized in that: The driving motor has a power line, and a sheath is provided on the outer surface of the power line.

10. The electric strut according to claim 1, characterized in that: Also includes: The motor outer protective tube is sleeved on the outside of the driving motor and one end of the motor outer protective tube is connected to the second ball socket head.

11. The electric strut according to claim 10, characterized in that: Also includes: A support rod outer protective tube is sleeved outside the sleeve and one end of the support rod outer protective tube is connected to an end of the motor outer protective tube away from the second ball socket head.

12. A vehicle, characterized in that: include: a vehicle body having a luggage compartment; a cover plate rotatably disposed on the vehicle body to open or close the luggage compartment; According to the electric strut according to any one of claims 1-11, the first ball socket head is rotatably connected to the cover plate, and the second ball socket head is rotatably connected to the vehicle body.

Images