Rotary telescopic structure, electric actuator and vehicle body

Abstract

The utility model discloses a rotary telescopic structure, an electric actuator and a vehicle body, and the rotary telescopic structure comprises a main body, a rotating shaft and a telescopic rod, the output shaft is rotationally connected with the driving part, the first end of the output shaft is used for being connected with a driven part, and the second end of the output shaft is connected with the main body through an elastic part; the sliding groove piece is connected with the body and provided with a spiral sliding way, the output shaft is provided with a sliding piece matched with the spiral sliding way, and forward and reverse rotation of the driving piece and pressing of the first end of the output shaft are both used for achieving forward and reverse sliding of the sliding piece in the spiral sliding way so as to achieve rotation and stretching and retracting of the driven piece. The rotary telescopic structure is simple in structure, can meet the requirement that a driven part can rotate and stretch in an electric state and a power-off manual state, and ensures the reliability of operation.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary telescopic equipment, and more specifically, to a rotary telescopic structure. In addition, the utility model also relates to an electric actuator including the rotary telescopic structure and a vehicle body including the electric actuator. Background Art

[0002] With the development of the automobile industry, people have higher and higher requirements on the electric actuators of automobiles. The fuel filler door and the charging port door installed on the automobile body are locked or unlocked under the action of their corresponding electric actuators for refueling or charging operations, and the design of the rotating telescopic structure in the electric actuator must ensure that it can operate normally in both the electric state and the power-off state to ensure the reliable locking or unlocking of the fuel filler door and the charging port door.

[0003] In the related technology, a vehicle-use micro-actuator assembly proposes a rotating telescopic structure that cooperates with a sliding point in a locking cavity of a base and a spiral groove on a rotating push rod. When locking, the fuel filler door and the charging port cover door are pressed to abut against the rotating push rod, and the rotating push rod is forced to move downward and rotate along the trajectory of the spiral slide groove to further drive the rotation of a driving sleeve connected to the rotating push rod and a rotating sleeve connected to the driving sleeve, so that the rotating sleeve is limited in the locking cavity, and the motor drives the gear to drive the locking member to move to lock the rotating push rod, thereby achieving the closing of the fuel filler door and the charging port cover door; correspondingly, when unlocking, the motor and the manual pressing of the cover door are still required to cooperate. The overall structure of this rotating telescopic structure is complex, and it requires a combination of electric and mechanical forms to lock and unlock, and cannot meet the requirements of normal operation in both electric and power-off states.

[0004] In summary, how to ensure that the rotating and telescopic structure can operate normally in both the electric state and the power-off state is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a rotating telescopic structure with a simple structure, which can satisfy the requirement that the driven part can be rotated and telescoped in both the electric state and the power-off manual state, thereby ensuring the reliability of the operation. Another purpose of the utility model is to provide an electric actuator including the above rotating telescopic structure and a vehicle body including the electric actuator.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A rotating telescopic structure, comprising:

[0008] A main body, wherein a driving member is disposed in the main body;

[0009] An output shaft, rotatably connected to the driving member, wherein a first end of the output shaft is used to be connected to the driven member, and a second end of the output shaft is connected to the main body via an elastic member;

[0010] A slide member is connected to the main body and is provided with a spiral slide. The output shaft is provided with a sliding member that cooperates with the spiral slide. The forward and reverse rotation of the driving member and the pressing of the first end of the output shaft are used to realize the forward and reverse sliding of the sliding member in the spiral slide to realize the rotation and extension of the driven member.

[0011] Preferably, the spiral slideway comprises a spiral groove and a vertical groove connected thereto, and a guide surface is provided at a connection position between the spiral groove and the vertical groove for the sliding member to slide from the vertical groove to the spiral groove.

[0012] Preferably, the guide surface includes a vertical plane and a connected inclined surface, the angle between the inclined surface and the vertical plane is an obtuse angle, and the distance between the inclined surface and the edge of the vertical groove is smaller than the distance between the vertical plane and the edge of the vertical groove.

[0013] Preferably, the elastic member is a spring, one end of the spring is connected to the bottom surface of the inner wall of the main body, and the other end of the spring is sleeved on the output shaft and abuts against its shoulder.

[0014] Preferably, the sliding member is a pin integrally formed with the output shaft, and one end of the spiral slideway has an opening for facilitating the insertion of the pin.

[0015] Preferably, an anti-rotation member is provided on the circumference of the slide member, and the anti-rotation member is clamped on the inner wall of the main body.

[0016] Preferably, the main body comprises two detachably connected monomers, and the two monomers are respectively provided with two openings extending from both ends of the output shaft;

[0017] The output shaft at least partially extends out of the opening to facilitate manual pressing.

[0018] Preferably, the driving member and the output shaft are connected via a transmission assembly, one end of the transmission assembly is connected to the output end of the driving member, and the other end of the transmission assembly is connected to the output wheel on the output shaft.

[0019] The utility model also provides an electric actuator, comprising the rotating telescopic structure described in any one of the above items, wherein the driven member is an oil port cover plate or a charging port cover plate, and the sliding member slides forward and reversely in the spiral slideway to open and close the oil port cover plate or the charging port cover plate.

[0020] The utility model also provides a vehicle body, comprising the electric actuator mentioned above.

[0021] The rotary telescopic structure provided by the utility model comprises a main body, an output shaft, a driving member and a sliding groove member, wherein a driving member is arranged in the main body, the driving member and the output shaft are rotatably connected, and the rotation and telescopic movement of the driven member can be realized by driving the output shaft to rotate through the driving member; the sliding groove member is connected to the main body and is provided with a spiral slideway, and a sliding member matched with the spiral slideway is arranged on the output shaft; the first end of the output shaft is connected to the driven member, and the second end is connected to the main body through an elastic member, and when the sliding member slides, the movement of the output shaft can compress or stretch the elastic member, and the elastic force of the elastic member being compressed or stretched can assist the retraction of the driven member; in the electric state, the driving member drives the output shaft to rotate forward and reversely, The sliding member slides forward and backward in the spiral slideway. The forward sliding can make the driven member rotate forward and extend, while the reverse sliding can make the driven member rotate backward and retract. In the power-off manual state, when the first end of the output shaft is pressed for the first time, under the action of the spiral slideway and the sliding member, the sliding member moves to the first end of the spiral slideway, and the output shaft can rotate forward to make the driven member connected to the output shaft rotate forward and extend. At this time, the movement of the output shaft will compress or stretch the elastic member. When the first end of the output shaft is pressed again, the sliding member disengages from the first end of the spiral slideway, and under the action of the elastic force of the elastic member, the output shaft can rotate backward to drive the driving member to rotate backward and retract. The above-mentioned rotating and telescopic structure has a simple structure, which can meet the requirements that the driven member can realize rotation and telescopic in both the electric state and the power-off manual state, thereby ensuring the reliability of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1 A structural schematic diagram of the rotating telescopic structure provided by the utility model;

[0024] Figure 2 A schematic diagram of the internal structure of the rotating telescopic structure provided by the utility model;

[0025] Figure 3 A schematic diagram of the structure of the slide member provided by the utility model;

[0026] Figure 4 This is a schematic structural diagram of the output shaft provided by the utility model.

[0027] Figure 1-Figure 4 , the reference numerals include:

[0028] 1-driving member; 2-output shaft; 3-slideway member; 4-spiral slideway; 5-sliding member; 6-elastic member; 7-transmission assembly; 8-main body; 9-output wheel; 31-anti-rotation member; 41-spiral groove; 42-vertical groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] The core of the utility model is to provide a rotating telescopic structure with a simple structure, which can realize rotation and telescopic in both electric state and power-off manual state, ensuring the reliability of operation. Another core of the utility model is to provide an electric actuator including the rotating telescopic structure and a vehicle body including the electric actuator.

[0031] The rotary telescopic structure provided by the utility model includes a main body 8, a driving member 1, an output shaft 2 and a slide member 3. Please refer to Figure 1 , Figure 2 .

[0032] The driving member 1 is arranged in the main body 8, and the main body 8 is the shell of the rotating telescopic structure, which can protect the components and provide a space for component installation. Specifically, it can be a box type or a cylinder type. The specific structural form is not limited and is subject to the actual installation situation.

[0033] The driving member 1 is rotationally connected to the output shaft 2. The output shaft 2 can rotate forward and reversely through the forward and reverse rotation of the driving member 1. Specifically, the driving member 1 can be a motor, an internal combustion engine, etc., which can provide a driving force for the output shaft 2 to rotate forward and reverse.

[0034] The first end of the output shaft 2 is used to connect to the driven part, and the second end is connected to the main body 8 through the elastic part 6. The driven part here can be a vehicle boarding and exiting pedal, a smart lock body structure, a grinding device, a winding device, a cleaning device, an oil port cover or a charging port cover, and other parts that require rotational driving force.

[0035] When the rotating telescopic structure is in operation, the output shaft 2 rotates and moves up and down. Specifically, the sliding member 5 on the output shaft 2 cooperates with the spiral slideway 4 on the slideway member 3, and the sliding member 5 slides along the spiral slideway 4 to realize the rotation and up and down movement of the output shaft 2.

[0036] Optionally, the angle of the spiral slide 4 is not limited and can be 90°, 100°, etc., and can be designed in combination with the actual opening and closing requirements of the cover plate.

[0037] Optionally, the sliding member 5 can be integrally formed with the output shaft 2, and the corresponding spiral slideway 4 is a slideway with an opening at one end. The opening here means that one end of the spiral slideway 4 is closed and the other end is not closed, and the open end facilitates the connection between the output shaft 2 and the slideway member 3;

[0038] Optionally, the sliding member 5 may also be relatively independent from the output shaft 2, and an opening is provided at one end of the spiral slideway 4. When the rotary telescopic structure is assembled, the sliding member 5 is connected to the output shaft 2 and then to the slideway member 3;

[0039] Optionally, the sliding member 5 may also be relatively independent from the output shaft 2, and both ends of the spiral slideway 4 are closed. When the rotary telescopic structure is assembled, the sliding member 5 is connected to the output shaft 2 after the output shaft 2 and the slideway member 3 are connected.

[0040] Optionally, the sliding member 5 may be a shaft body, which is configured to match the groove structure shape of the spiral groove.

[0041] Optionally, two spiral slideways 4 may be provided, and two groups of corresponding sliding members 5 may also be provided to ensure the relative stability of the rotation and movement of the output shaft 2 .

[0042] The slide member 3 is connected to the main body 8, and the specific connection method can be a clamping connection, a fastener connection, or a threaded connection, etc. When the output shaft 2 rotates and moves, the slide member 3 is relatively fixed, that is, the spiral slideway 4 is relatively fixed, and the sliding member 5 slides in the spiral slideway 4 to ensure better operation stability.

[0043] The forward and reverse rotation of the driving member 1 and the pressing of the first end of the output shaft 2 are used to realize the forward and reverse sliding of the sliding member 5 in the spiral slide 4, so as to realize the rotation and extension of the driven member. Specifically, when the rotation and extension of the driven member is realized by the driving member 1, it corresponds to the electric state of the rotation and extension structure. When the driving member 1 rotates forward, the driving sliding member 5 slides forward in the spiral slide 4, so that the output shaft 2 moves upward and rotates. At this time, the elastic member 6 connected to the second end of the output shaft 2 is stretched or compressed relative to the main body 8 to have a certain restoring force. The upward movement and rotation of the output shaft 2 are used for the upward movement and rotation of the driven member at its first end; when the driving member 1 is reversed, the driving force of the driving member 1 and the restoring force obtained by the elastic member 6 jointly drive the sliding member 5 to slide in the opposite direction in the spiral slide 4, so that the output shaft 2 moves downward and rotates, and the downward movement and rotation of the driven member are realized by the downward movement and rotation of the output shaft 2.

[0044] When the driven part is rotated and retracted by pressing the output shaft 2, it corresponds to the power-off manual state of the rotation and retracting structure. When the first end of the output shaft 2 is pressed for the first time (in fact, pressing the first end of the output shaft 2 is achieved by pressing the driven part), the sliding member 5 on the output shaft 2 is subjected to the force and slides forward in the spiral slideway 4. The driven part is rotated and extended by the upward movement and rotation of the output shaft 2. At this time, the sliding member 5 is restricted on the end of the spiral slideway 4, and the elastic member 6 is stretched or compressed to obtain a reset force. When the first end of the output shaft 2 is pressed again, the sliding member 5 is released from the restriction, and the reset force obtained by the elastic member 6 can drive the sliding member 5 to slide in the opposite direction in the spiral slideway 4, thereby achieving the downward movement and rotation of the output shaft 2 and the rotation and retraction of the driven part.

[0045] The specific description of the compression and stretching of the elastic member 6 in the above process is as follows:

[0046] If the upward movement of the output shaft 2 compresses the elastic member 6, in this case, the elastic member 6 is sleeved on the output shaft 2, the first end of the elastic member 6 abuts against the shoulder on the second end of the output shaft 2 or the first end of the elastic member 6 and the second end of the output shaft 2 are directly welded, and the second end of the elastic member 6 is connected to the upper side of the main body 8. When the output shaft 2 moves upward, under the restriction of the upper side of the main body 8, the elastic member 6 is compressed as a whole when the output shaft 2 moves upward;

[0047] If the upward movement of the output shaft 2 causes the elastic member 6 to stretch, in this case, the elastic member 6 is sleeved on the output shaft 2, the first end of the elastic member 6 abuts against the shoulder on the output shaft 2 or the first end of the elastic member 6 and the second end of the output shaft 2 are directly welded, and the second end of the elastic member 6 is connected to the lower side of the main body 8. When the output shaft 2 moves upward, the elastic member 6 is stretched as the output shaft 2 moves upward under the restriction of the lower side of the main body 8.

[0048] No matter the elastic member 6 is compressed or stretched when the output shaft 2 moves upward, it is essentially to realize that the rotation and telescopic structure can realize the rotation and telescopic of the driven member in both the electric state and the power-off manual state.

[0049] Taking the driven part as an oil port cover or a charging port cover as an example, in the electric state, the driving part 1 drives the output shaft 2 to rotate forward and reverse, and the sliding part 5 slides forward and reverse in the spiral slide 4. The forward sliding can open the oil port cover or the charging port cover connected to the output shaft 2, and the reverse sliding can close the oil port cover or the charging port cover; in the power-off manual state, when the first end of the output shaft 2 is pressed for the first time, under the action of the spiral slide 4 and the sliding part 5, the sliding part 5 moves to the first end of the spiral slide 4, and the output shaft 2 can rotate forward to open the oil port cover or the charging port cover connected to the output shaft 2. At this time, the movement of the output shaft 2 will compress or stretch the elastic part 6. When the first end of the output shaft 2 is pressed again, the sliding part 5 disengages from the first end of the spiral slide 4, and under the action of the elastic force of the elastic part 6, the output shaft 2 can rotate in the opposite direction to close the oil port cover or the charging port cover. Through the rotating telescopic structure provided by the utility model, the oil port cover plate or the charging port cover plate can be opened and closed in the electric state and the power-off manual state, thereby ensuring the safety and reliability of the operation.

[0050] Based on the above embodiment, the spiral slide 4 includes a spiral groove 41 and a vertical groove 42 connected thereto, and a guide surface is provided at the connecting position between the spiral groove 41 and the vertical groove 42 for making the sliding member 5 slide from the vertical groove 42 to the spiral groove 41 .

[0051] Please refer to Figure 1 , Figure 2 , Figure 3 , the spiral slideway 4 includes a spiral groove 41 and a vertical groove 42. The spiral groove 41 is the main slideway for the sliding member 5 to slide, and the connection between the vertical groove 42 and the spiral groove 41 is the initial limit position of the sliding member 5. Under the positive driving force of the driving member 1 or the force of manually pressing the output shaft 2 for the first time, the sliding member 5 is disengaged from the initial position and enters the spiral groove 41 through the guide surface to realize the upward movement and rotation of the output shaft 2, and realize the rotation and extension of the driven member; under the reverse driving force of the driving member 1 or the force of manually pressing the output shaft 2 for the second time, the sliding member 5 moves from the end of the spiral groove 41 until it reaches the guide surface position and is limited, at which time the output shaft 2 moves downward and rotates, realizing the rotation and retraction of the driven member.

[0052] Optionally, the guide surface may be an arc, a slope, etc., which can achieve guiding and limiting effects.

[0053] Based on any of the above embodiments, the guide surface includes a vertical plane and the distance between the vertical plane and the edge of the vertical slot 42 is less than the distance between the vertical plane and the slot body.

[0054] Please refer to Figure 1 , Figure 2 , Figure 3The guide surface includes a vertical plane and an inclined surface connected thereto, wherein the inclined surface is arranged close to the vertical groove 42, and the vertical plane is arranged close to the spiral groove 41. The distance between the inclined surface and the edge of the groove body of the vertical groove 42 is smaller than the distance between the vertical plane and the edge of the groove body of the vertical groove 42. In the initial state, the sliding member 5 is restricted to the vertical plane position at the connection position of the vertical groove 42 and the spiral groove 41 under the action of the vertical plane.

[0055] Under the positive driving force of the driving member 1 or the force of manually pressing the output shaft 2 for the first time, the sliding member 5 enters the vertical groove 42 along the inclined surface. Under the reaction force of the inclined surface, the sliding member 5 enters the vertical groove 42 and slides smoothly into the spiral groove 41 until the sliding member 5 reaches the end of the spiral groove 41 and is restricted again. In this process, the output shaft 2 moves up and rotates, realizing the rotation and extension of the driven member.

[0056] Under the reverse driving force of the driving member 1 or the force of manually pressing the output shaft 2 for the second time, the sliding member 5 is released from the limit in the spiral groove 41, slides from the end of the spiral groove 41 to the vertical plane position, and the sliding member 5 returns to the initial position. During this process, the output shaft 2 moves downward and rotates, realizing the rotational retraction of the driven member.

[0057] On the basis of any of the above embodiments, the elastic member 6 is a spring, one end of the spring is connected to the bottom surface of the inner wall of the main body 8, and the other end of the spring is sleeved on the output shaft 2 and abuts against its shoulder.

[0058] Please refer to Figure 1 , Figure 2 In this embodiment, the elastic member 6 is a spring, which is sleeved on the output shaft 2, one end of which is connected to the bottom surface of the inner wall of the main body 8, and the other end abuts against the shoulder on the output shaft 2. When the output shaft 2 moves up, the spring moves up with it and is stretched to obtain the reset force.

[0059] In this embodiment, the shoulder on the output shaft 2 can be set at any position as long as it can provide an abutment position for the spring.

[0060] On the basis of any of the above embodiments, the sliding member 5 is a pin integrally formed with the output shaft 2, and one end of the spiral slideway 4 has an opening for the pin to be inserted.

[0061] In this embodiment, the sliding member 5 and the output shaft 2 are integrally formed. In order to facilitate the connection between the output shaft 2 and the slide member 3, an opening is set at one end of the spiral slide 4, specifically, one end of the vertical groove 42 has an opening, so that when the output shaft 2 and the slide member 3 are connected, the pin passes through the opening of the vertical groove 42 and enters the initial position of the vertical plane.

[0062] On the basis of any of the above embodiments, an anti-rotation member 31 is provided on the circumference of the slide member 3 , and the anti-rotation member 31 is clamped on the inner wall of the main body 8 .

[0063] Please refer to Figure 1 , Figure 2 , Figure 3 The anti-rotation member 31 can be a protrusion or a groove, and a groove or a protrusion can be set on the inner wall of the corresponding main body 8, as long as the fixed connection between the slide member 3 and the main body 8 can be guaranteed.

[0064] Preferably, the anti-rotation parts 31 are evenly distributed along the circumference of the slide member 3 to ensure the fastening reliability of the connection between the main body 8 and the slide member 3 .

[0065] Preferably, the anti-rotation member 31 is disposed at the end of the slide member 3 to facilitate the clamping and fixing of the main body 8 and the slide member 3 .

[0066] Based on any of the above embodiments, the main body 8 includes two detachably connected monomers, and the two monomers are provided with two openings corresponding to the two ends of the output shaft 2; the output shaft 2 at least partially extends out of the opening to facilitate manual pressing.

[0067] Please refer to Figure 1 , Figure 2 In this embodiment, the driven part is an oil port cover or a charging port cover. The upper and lower sides of the main body 8 are two detachably connected monomers. Both monomers are provided with openings. The two ends of the output shaft 2 correspond to the two extended openings, so that both ends can be used for force in the power-off manual state, and it is convenient to observe the opening or closing status of the cover.

[0068] In this embodiment, the upward and downward movement of the output shaft 2 corresponds to extending from or retracting into the main body 8 from the opening of the main body 8. In the initial state, the output shaft 2 partially extends out of the opening, which is convenient for manual pressing. The end for manual pressing corresponds to the oil port cover plate or the charging port cover plate. In the power-off manual state, pressing the oil port cover plate or the charging port cover plate can press the output shaft 2, thereby realizing the extension and retraction of the output shaft 2 relative to the main body 8.

[0069] The shape of the specific opening is not limited. Under the premise of ensuring that the output shaft 2 can move smoothly, the opening can be set smaller to prevent dust from entering the main body 8.

[0070] Optionally, a guide sleeve may be provided on the opening on the main body 8 to provide a guide for the movement of the output shaft.

[0071] Based on any of the above embodiments, the driving member 1 and the output shaft 2 are connected via a transmission assembly 7, one end of the transmission assembly 7 is connected to the output end of the driving member 1, and the other end of the transmission assembly 7 is connected to the output wheel 9 on the output shaft 2.

[0072] Please refer to Figure 2 , Figure 4 The driving member 1 and the output shaft 2 are connected through a transmission assembly 7 to achieve power transmission. The transmission assembly 7 may include gears, pulleys, rotating shafts, couplings, etc., which can be flexibly selected based on actual conditions.

[0073] One end of the transmission assembly 7 is connected to the output end of the driving member 1, and the other end is connected to the output wheel 9 on the output shaft 2. If the output wheel 9 is a gear, a gear meshing with it is provided on the other end of the transmission assembly 7, thereby reducing the occupied space while ensuring effective and reliable transmission of power.

[0074] Optionally, the output wheel 9 and the output shaft 2 may be formed in one piece or fixedly connected, as long as the synchronous rotation of the two can be ensured.

[0075] In addition to the above-mentioned rotating and telescopic structure, the utility model also provides an electric actuator including the above-mentioned rotating and telescopic structure. The electric actuator is a component used to realize the locking (closing) or unlocking (opening) of the oil port cover and the charging port cover. The oil port cover and the charging port cover are opened or closed by sliding the sliding member 5 in the spiral slide 4 in the forward and reverse directions in the power-off manual state or the electric state.

[0076] In addition to the above-mentioned electric actuator, the utility model also provides a vehicle body including the electric actuator disclosed in the above-mentioned embodiment, the vehicle body at least includes an oil port cover plate or a charging port cover plate and a frame, and the electric actuator is arranged on the frame and connected to the oil port cover plate or the charging port cover plate.

[0077] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0078] The above is a detailed introduction to a rotary telescopic structure, an electric actuator and a vehicle body provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A rotating telescopic structure, characterized in that: include: A main body (8), wherein a driving member (1) is arranged inside the main body (8); An output shaft (2) is rotatably connected to the driving member (1), a first end of the output shaft (2) is used to be connected to the driven member, and a second end of the output shaft (2) is connected to the main body (8) via an elastic member (6); A slide member (3) is connected to the main body (8) and is provided with a spiral slideway (4); a sliding member (5) is provided on the output shaft (2) and cooperates with the spiral slideway (4); the forward and reverse rotation of the driving member (1) and the pressing of the first end of the output shaft (2) are used to realize the forward and reverse sliding of the sliding member (5) in the spiral slideway (4), so as to realize the rotation and extension of the driven member.

2. The rotating and telescopic structure according to claim 1, characterized in that: The spiral slideway (4) comprises a spiral groove (41) and a vertical groove (42) connected thereto, and a guide surface is provided at a connection position between the spiral groove (41) and the vertical groove (42) for the sliding member (5) to slide from the vertical groove (42) to the spiral groove (41).

3. The rotating telescopic structure according to claim 2, characterized in that: The guide surface comprises a vertical plane and an inclined surface connected thereto, the angle between the inclined surface and the vertical plane is an obtuse angle, and the distance between the inclined surface and the edge of the groove body of the vertical groove (42) is smaller than the distance between the vertical plane and the edge of the groove body of the vertical groove (42).

4. The rotating and telescopic structure according to any one of claims 1 to 3, characterized in that: The elastic member (6) is a spring, one end of which is connected to the bottom surface of the inner wall of the main body (8), and the other end of which is sleeved on the output shaft (2) and abuts against its shoulder.

5. The rotating and telescopic structure according to claim 4, characterized in that: The sliding member (5) is a pin formed integrally with the output shaft (2), and one end of the spiral slideway (4) has an opening for facilitating the insertion of the pin.

6. The rotating and telescopic structure according to claim 5, characterized in that: An anti-rotation component (31) is provided on the circumference of the slide groove component (3), and the anti-rotation component (31) is clamped on the inner wall of the main body (8).

7. The rotating and telescopic structure according to claim 6, characterized in that: The main body (8) comprises two detachably connected monomers, and the two monomers are provided with two openings extending from the two ends of the output shaft (2) respectively; The output shaft (2) at least partially protrudes from the opening to facilitate manual pressing.

8. The rotating and telescopic structure according to claim 7, characterized in that: The driving member (1) and the output shaft (2) are connected via a transmission assembly (7), one end of the transmission assembly (7) is connected to the output end of the driving member (1), and the other end of the transmission assembly (7) is connected to an output wheel (9) on the output shaft (2).

9. An electric actuator, characterized in that: The rotary telescopic structure comprises the rotary telescopic structure according to any one of claims 1 to 8, wherein the driven member is an oil port cover plate or a charging port cover plate, and the sliding member (5) slides in forward and reverse directions in the spiral slideway (4) to open and close the oil port cover plate or the charging port cover plate.

10. A vehicle body, characterized in that: Includes the electric actuator as described in claim 9.

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