A housing integrated electric push rod

Abstract

The application relates to an outer shell integrated electric push rod, which comprises a shell, a driving motor and a driving screw rod, the driving screw rod is rotationally connected in the shell, the driving motor is installed on the shell and connected with the driving screw rod, a nut block is slidingly matched in the shell, the driving screw rod penetrates through the nut block and is threadedly matched with the nut block, a push cylinder is installed on the nut block, the driving screw rod is located in the push cylinder, the push cylinder is slidingly matched with the end of the shell, and a top head located outside the shell is installed. The application has the effect of improving the applicability of the electric push rod.

Description

Technical Field

[0001] This application relates to the field of electric linear actuator technology, and in particular to an electric linear actuator with an integrated housing. Background Technology

[0002] An electric linear actuator is an electrically driven device that converts the rotary motion of an electric motor into the linear reciprocating motion of a linear actuator. It mainly consists of a drive motor, reduction gears, a screw, a nut, a guide sleeve, a linear actuator, a slide, a spring, a housing, a worm gear, and a micro-switch. It can be used as an actuator in various simple or complex processes to achieve remote, centralized, or automatic control, and is widely used in electric chairs, medical equipment, furniture, agricultural machinery, and construction machinery.

[0003] Chinese Patent CN213185770U discloses an electric linear actuator, which includes a housing, a sliding member, a reset assembly, a pushing assembly, a limiting assembly, and a push rod. The sliding member can slide up and down along the length of the housing. The reset assembly includes a base and a reset element disposed between the base and the sliding member. One end of the reset element is connected to the sliding member, and the other end is connected to the base. The pushing assembly includes a motor, a rotating member, and a rope. One end of the rope is connected to the rotating member, and the other end is connected to the sliding member. The limiting assembly includes a bracket, a limiting block, a telescopic cylinder, and a fastener connected to the telescopic cylinder. The fastener passes through the housing and enters the base. This electric linear actuator, through the sliding up and down movement of the limiting block, causes the limiting block to drive the base to slide up and down, thereby controlling the extension and retraction of the reset element to adapt to the motor's output power.

[0004] Regarding the aforementioned technologies, existing technologies involve starting a motor to rewind a rope, which pulls a sliding component. The sliding component moves, causing the push rod to move, and the reset component to stretch, thus achieving the effect of pushing an object. When resetting, the motor is de-energized, and the stretching force of the reset component pulls the sliding component in the opposite direction, causing the push rod to reset. However, in existing technologies, the motor bears the load of the object on one hand and the tension of the reset component on the other. Under the action of these two forces, the output torque of the motor is reduced, and its service life is shortened. It is only suitable for pushing products with relatively small weight, reducing the applicability of electric push rods. Summary of the Invention

[0005] To improve the applicability of electric linear actuators, this application provides an electric linear actuator with an integrated housing.

[0006] This application provides a one-piece electric linear actuator with the following technical solution: An integrated electric actuator includes a housing, a drive motor, and a drive screw. The drive screw is rotatably connected inside the housing. The drive motor is mounted on the housing and connected to the drive screw. A nut block is slidably fitted inside the housing. The drive screw passes through the nut block and is threadedly fitted to the nut block. A push cylinder is mounted on the nut block. The drive screw is located inside the push cylinder. The push cylinder is slidably fitted to the end of the housing and has a top head located outside the housing.

[0007] By adopting the above technical solution, upon startup, the drive motor is activated, driving the drive screw to rotate. Due to the sliding fit between the nut block and the housing, the nut block moves, driving the push cylinder to move, which in turn drives the top head to move, thus achieving the effect of pushing the object. Because the drive screw and nut block are threadedly fitted, the reaction force when the object is pushed is offset by the thread friction of the drive screw and nut block. This eliminates the need for the drive motor to be constantly affected by the load of the object, extending the service life of the drive motor and ensuring maximum output of rotational torque during operation. Compared with existing technologies, this allows the electric linear actuator to be used for heavier objects, improving its applicability.

[0008] Optionally, a fixing frame is installed inside the housing. The fixing frame includes a first frame and a second frame. The first frame is installed inside the housing and is rotatably connected to the output shaft of the drive motor. The second frame is installed inside the housing and is rotatably connected to the end of the drive screw. A connecting component for connecting the first frame is provided on the second frame.

[0009] By adopting the above technical solution, the first frame serves as a connector between the drive motor and the housing, ensuring the output stability of the drive motor; the second frame serves as a connector between the drive screw and the housing, ensuring the output stability of the drive screw. The cooperation between the first and second frames improves the overall stability of the electric actuator during operation.

[0010] Optionally, the connecting assembly includes connecting bolts, which are inserted through the second frame and are arranged in multiples. The first frame abuts against the second frame, and the connecting bolts are threadedly engaged with the first frame.

[0011] By adopting the above technical solution, during connection, the second frame is brought into contact with the first frame, and then the connecting bolt is passed through the second frame and threaded into the first frame to restrict the movement of the second frame, thus realizing the connection between the first and second frames.

[0012] Optionally, the connecting assembly includes a connecting post, a locking block, a return spring, and a fixing block. The second frame has several insertion holes through which the connecting post passes. One end of the connecting post has several sliding grooves. The connecting post is cylindrical, and the sliding grooves coincide with the radial direction of the connecting post. A limiting post is connected inside the connecting post. One end of the locking block has a guiding arc surface, and the other end has a waist-shaped groove. A pressing block slides within the waist-shaped groove. The return spring is connected between the end of the waist-shaped groove and the pressing block. The limiting post is located at... Within the waist-shaped groove, the abutting block adheres to the surface of the limiting post. Several locking blocks are stacked along the length of the limiting post at their other ends. When locked, the locking blocks partially adhere to the second frame. The first frame has a locking hole with an axial groove and a limiting arc groove. The end of the limiting arc groove communicates with the axial groove. The fixing block is connected to the other end of the connecting post and is located within the limiting arc groove. The second frame is provided with a limiting member that restricts the rotation of the connecting post, and the second frame is provided with an unlocking component that unlocks the connecting assembly.

[0013] By adopting the above technical solution, during connection, one end of the connecting column is inserted into the socket. During this process, the guiding arc surface abuts against the second frame, causing the locking block to enter the sliding groove. The return spring is compressed until one end of the connecting column passes through the second frame. The locking block moves in the opposite direction under the force of the return spring until the abutting block abuts against the end of the waist-shaped groove. At this time, part of the locking block moves out of the sliding groove and fits against the side wall of the second frame. Then, the other end of the connecting column is inserted into the first frame. The fixing block enters the axial groove and the limiting arc groove in sequence. Finally, the limiting component restricts the rotation of the connecting column, thereby restricting the movement of the second frame and realizing the connection between the first frame and the second frame.

[0014] Optionally, the unlocking assembly includes a pressing knob, a fixing ring, a connecting ring, and a connecting spring. The second frame has several limiting holes. The locking block fits against the bottom wall of the limiting hole. Two fixing rings are connected to the inner wall of the limiting hole. The connecting ring is connected to the pressing knob and is located between the two fixing rings. The connecting spring is sleeved on the pressing knob and is located between the connecting ring and the fixing ring near the bottom wall of the limiting hole. The pressing knob has a clearance hole. When unlocking, one end of the connecting post is located in the clearance hole, and the pressing knob applies pressure to the guide arc surface.

[0015] By adopting the above technical solution, when unlocking one end of the connecting column, the pressing knob is applied, and the pressing knob applies pressure to the guide arc surface, and the locking block enters the sliding groove. At this time, the second frame can be pulled to disengage from the connecting column, thus achieving the effect of unlocking the second frame.

[0016] Optionally, the limiting element is a limiting groove. Several limiting elements are provided on the inner bottom wall of the limiting hole, and each corresponds to one of the locking blocks. The limiting element and the locking block are slidably engaged. Several connecting strips are connected to the arc surface of the locking block. Several strip grooves matching the connecting strips are provided on the inner ring wall of the pressing knob. The maximum inner diameter formed by the clearance hole and the strip grooves is consistent with the inner diameter of the insertion hole. The limiting arc groove is a 90-degree arc groove.

[0017] By adopting the above technical solution, first insert the other end of the connecting column into the first frame, and the fixing block enters the limiting arc groove. Then, attach the first frame to the second frame, insert one end of the connecting column into the second frame, and at this time, the locking block enters the limiting hole. Apply pressure and rotate the pressing knob to ensure that the connecting strip enters the strip groove. Then rotate the pressing knob until the connecting strip enters the limiting component. Then, release the pressing knob, and part of the locking block will smoothly enter the limiting component. Through the cooperation of the limiting component and the locking block, the rotation of the fixing block in the limiting arc groove is restricted, thus achieving the effect of connecting the first frame and the second frame.

[0018] Optionally, a coupling is provided between the drive motor and the drive screw. The coupling includes a first ring, a second ring, and an auxiliary torsion spring. The first ring is inserted into the output shaft of the drive motor, and the second ring is inserted into the drive screw. Both the first ring and the second ring are connected to a plurality of extension blocks, which are staggered. Each extension block is connected to a stop block. The auxiliary torsion spring is sleeved between the plurality of extension blocks and located between two of the stop blocks. The auxiliary torsion spring is connected between the first ring and the second ring.

[0019] By employing the above technical solution, the friction between the drive screw and the nut block cannot completely offset the reverse torque force generated by the load on the drive screw, causing the drive screw to rotate in the opposite direction. When the drive motor starts, the first ring rotates, pulling the auxiliary torsion spring to deform until the extension block on the first ring abuts against other extension blocks on the second ring, thereby driving the second ring to rotate and achieving the effect of driving the screw to rotate. When the item is pushed to the designated position, the drive screw bears the reaction force of the item. When the thread friction between the nut block and the drive screw is less than the reverse torque force borne by the drive screw, the second ring rotates in the opposite direction, causing the auxiliary torsion spring to deform and expand until it presses against the inner wall of the first frame, thereby increasing the friction between the second ring and the first frame to offset the reverse torque force of the drive screw and achieve the self-locking effect of the auxiliary drive screw. The deformation force of the auxiliary torsion spring helps to offset the reverse torque force borne by the drive screw, achieving the self-locking effect of the auxiliary drive screw.

[0020] Optionally, the drive motor is installed inside the housing and is coaxially arranged with the drive screw.

[0021] By adopting the above technical solution, the drive motor is installed inside the housing, so that the drive motor and the drive screw are linearly distributed, which reduces the space occupied by the drive electric cylinder and makes the drive electric cylinder more suitable for operation in narrow installation spaces.

[0022] Optionally, the nut block is provided with an assembly groove, the assembly groove is provided with a limiting ring groove, a retaining sleeve is installed in the limiting ring groove, a sliding sleeve is fitted on the assembly groove, the sliding sleeve is located between the retaining sleeve and the end wall of the assembly groove, and a plurality of limiting strips are connected to the inner wall of the housing, and the sliding sleeve slides in cooperation with the limiting strips.

[0023] By adopting the above technical solution, the rotation of the sliding sleeve and the limiting strip are restricted through the cooperation of the sliding sleeve and the limiting strip, thereby achieving a sliding fit between the nut block and the housing.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. Upon startup, the drive motor is activated, causing the drive screw to rotate. Due to the sliding fit between the nut block and the housing, the nut block moves, driving the push cylinder to move. The push cylinder then drives the top head to move, achieving the effect of pushing the item. Because the drive screw and nut block are threadedly fitted, the reaction force when the item is pushed is offset by the thread friction between the drive screw and nut block. This eliminates the need for the drive motor to be constantly affected by the load of the item, extending the service life of the drive motor and ensuring maximum output of rotational torque during operation. Compared to existing technologies, this allows the electric linear actuator to be used for heavier items, improving its applicability. 2. During connection, insert one end of the connecting column into the second frame. During this process, guide the arc surface to abut against the second frame, causing the locking block to enter the sliding groove. The return spring is compressed until one end of the connecting column passes through the second frame. The locking block moves in the opposite direction under the force of the return spring until the abutting block abuts against the end of the waist-shaped groove. At this time, part of the locking block moves out of the sliding groove and fits against the side wall of the second frame. Then insert the other end of the connecting column into the first frame. The fixing block enters the axial groove and the limiting arc groove in sequence. Finally, the limiting component restricts the rotation of the connecting column, thereby restricting the movement of the second frame, thus realizing the connection between the first and second frames. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the electric actuator in Embodiment 1 of this application.

[0026] Figure 2 This is a cross-sectional view used to illustrate the internal structure of the electric actuator in Embodiment 1 of this application.

[0027] Figure 3 This is a schematic diagram of the structure of the fixing frame in Embodiment 1 of this application.

[0028] Figure 4This is an exploded view of Embodiment 1 of this application, used to illustrate the structure of the fixing frame, locking assembly, and coupling.

[0029] Figure 5 This is an exploded view of Embodiment 1 of this application, used to illustrate the structure of the nut block and the sliding sleeve.

[0030] Figure 6 This is an exploded view of Embodiment 2 of this application, used to illustrate the structure of the locking assembly.

[0031] Figure 7 This is an exploded view of Embodiment 2 of this application, used to illustrate the locking assembly and the push-button structure.

[0032] Figure 8 This is a cross-sectional view used to illustrate the structure of the unlocking component in Embodiment 2 of this application.

[0033] Figure 9 This is a cross-sectional view in Embodiment 2 of this application used to illustrate the axial groove and the limiting arc groove structure.

[0034] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Fixing frame; 111. First frame; 1111. Axial groove; 1112. Restricting arc groove; 112. Second frame; 1121. Restricting component; 12. Restricting strip; 2. Drive motor; 3. Drive screw; 31. Nut block; 311. Slip sleeve; 312. Sliding sleeve; 32. Push cylinder; 321. Top head; 4. Connecting assembly; 41. Connecting bolt; 42. Connecting column; 421. Restricting column; 43. Locking block; 431. Abutting block; 432. Connecting strip; 44. Return spring; 45. Fixing block; 5. Coupling; 51. First ring; 52. Second ring; 53. Auxiliary torsion spring; 54. Extension block; 541. Stop block; 6. Unlocking assembly; 61. Pressing knob; 62. Fixing ring; 63. Connecting ring; 64. Connecting spring. Detailed Implementation

[0035] The following is in conjunction with the appendix Figures 1-9 This application will be described in further detail.

[0036] Embodiment 1 of this application discloses an electric linear actuator with an integrated housing. (See also...) Figure 1 and Figure 2 The integrated electric actuator includes a housing 1, a drive motor 2, and a drive screw 3. The housing 1 is a hollow cylinder. A fixing frame 11 is provided inside the housing 1. The fixing frame 11 includes a first frame 111 and a second frame 112. The drive motor 2 is installed inside the housing 1. The first frame 111 is bolted to the drive motor 2. The output shaft of the drive motor 2 is rotatably connected to the first frame 111 through a bearing.

[0037] Reference Figure 2 , Figure 3 and Figure 4A connecting component 4 is provided between the first frame 111 and the second frame 112. The connecting component 4 includes connecting bolts 41. Several connecting bolts 41 are passed through the second frame 112. The second frame 112 fits against the end of the first frame 111. The connecting bolts 41 are threadedly engaged with the first frame 111. One end of the drive screw 3 is connected to the second frame 112 through a bearing.

[0038] Reference Figure 2 and Figure 4 The drive motor 2 and the drive screw 3 are coaxially arranged. A coupling 5 is provided between the output shaft of the drive motor 2 and the drive screw 3. The coupling 5 includes a first ring 51, a second ring 52, and an auxiliary torsion spring 53. The first ring 51 is inserted into the output shaft of the drive motor 2, and the second ring 52 is inserted into the end of the drive screw 3. Several extension blocks 54 are fixedly connected to both the first ring 51 and the second ring 52. The two sets of extension blocks 54 are staggered and each is fixedly connected to a stop block 541. The auxiliary torsion spring 53 is sleeved on the two sets of extension blocks 54 and located between the two sets of stop blocks 541. One end of the auxiliary torsion spring 53 is fixedly connected to the first ring 51, and the other end is fixedly connected to the second ring 52.

[0039] Reference Figure 2 and Figure 5 A nut block 31 is threaded onto the drive screw 3. The nut block 31 has an assembly groove, and a limiting ring groove is formed between the assembly grooves. A retaining sleeve 311 is installed within the limiting ring groove, and a sliding sleeve 312 is fitted onto the assembly groove, located between the retaining sleeve 311 and the end wall of the assembly groove. Several limiting strips 12 are fixedly connected to the inner wall of the housing 1 along its length, and the sliding sleeve 312 slides with the limiting strips 12. A push cylinder 32 is threaded onto the sliding sleeve 312, slidingly engaging with the end of the housing 1. A top head 321 is threaded onto the end of the push cylinder 32. A retaining ring is fixedly connected to the end of the drive screw 3.

[0040] When the linkage is activated, the drive motor 2 starts, causing the first ring 51 to rotate. The first ring 51 pulls one end of the auxiliary torsion spring 53, causing the auxiliary torsion spring 53 to stretch and deform until the extension block 54 on the first ring 51 hits other extension blocks 54 on the second ring 52, thereby driving the drive screw 3 to rotate. When the drive motor 2 stops working, the frictional force between the drive screw 3 and the nut block 31 is less than the reverse torque force of the drive screw 3, causing the second ring 52 to rotate in the opposite direction, causing the auxiliary torsion spring 53 to deform and expand until it touches the inner wall of the first ring 51. The frictional force between the auxiliary torsion spring 53 and the inner wall of the first ring 51 cancels out the remaining reverse torque force of the drive screw 3, achieving the self-locking effect of the auxiliary drive screw 3.

[0041] The implementation principle of the integrated electric push rod of Embodiment 1 of this application is as follows: When pushing an item, the drive motor 2 is started, causing the first ring 51 to rotate. The extension block 54 on the first ring 51 strikes other extension blocks 54 on the second ring 52. The second ring 52 rotates, driving the drive screw 3 to rotate, driving the sliding sleeve 312 to move, causing the push cylinder 32 to move, driving the top head 321 to move, thereby achieving the effect of pushing the item.

[0042] Since the drive screw 3 and the nut block 31 are threadedly engaged, the reaction force when the item is pushed is offset by the thread friction of the drive screw 3 and the nut block 31. When the drive motor 2 is not working, the auxiliary torsion spring 3 and the first ring 51 work together to offset the counter-torque force of the drive screw 3, ensuring that the drive screw 3 does not rotate. This eliminates the need for the drive motor 2 to be constantly affected by the load of the item, extending the service life of the drive motor 2. It also ensures the maximum output of the rotational torque force when the drive motor 2 is working. Compared with the existing technology, this makes the electric push rod suitable for situations involving heavier items, improving the applicability of the electric push rod.

[0043] Example 2: The difference between this example and Example 1 is that the connection method of the first frame 111 and the second frame 112 is different.

[0044] Reference Figure 6 and Figure 7 The connecting component 4 includes a connecting post 42, a locking block 43, a return spring 44, and a fixing block 45. The second frame 112 has several insertion holes, into which the connecting post 42 is inserted. One end of the connecting post 42 has several sliding grooves; in this embodiment, three are used as an example. The three sliding grooves are evenly distributed circumferentially around the axis of the connecting post 42. A limiting post 421 is fixedly connected within each sliding groove. The limiting post 421 coincides with the axis of the connecting post 42, and the sliding groove coincides with the radial direction of the connecting post 42.

[0045] Reference Figure 6 , Figure 7 and Figure 8 One end of the locking block 43 is provided with a guide arc surface, and the other end has a waist-shaped groove. The limiting post 421 is slidably fitted in the waist-shaped groove. A pressing block 431 is slidably fitted in the waist-shaped groove. A return spring 44 is installed between the pressing block 431 and the end of the waist-shaped groove. The pressing block 431 is in contact with the limiting post 421. The second frame 112 has several limiting holes. A limiting member 1121 is provided in the limiting hole. The limiting member 1121 is a limiting groove. The limiting member 1121 is set on the bottom wall of the limiting hole, and several of them are set. The limiting member 1121 corresponds to the locking block 43 one by one. The connecting post 42 passes through the insertion hole. The locking block 43 and the limiting member 1121 are slidably fitted. The other ends of the three locking blocks 43 are overlapped in the length direction of the limiting post 421.

[0046] Reference Figure 6 and Figure 9The fixing block 45 is fixedly connected to the other end of the connecting column 42. The first frame 111 has several locking holes, which correspond one-to-one with the insertion holes. The inner wall of the locking hole has an axial groove 1111 and a limiting arc groove 1112. The axial groove 1111 is parallel to the axis of the locking frame, and the limiting arc groove 1112 is located at the bottom wall of the locking hole and communicates with the axial groove 1111.

[0047] Reference Figure 7 and Figure 8 An unlocking component 6 is provided inside the limiting hole. The unlocking component 6 includes a pressing knob 61, a retaining ring 62, a connecting ring 63, and a connecting spring 64. Two retaining rings 62 are fixedly connected to the inner wall of the limiting hole. The connecting ring 63 is fixedly connected to the pressing knob 61 and is located between the two retaining rings 62. The connecting spring 64 is sleeved on the pressing knob 61 and is located between the connecting ring 63 and the retaining ring 62 near the bottom wall of the limiting hole.

[0048] Reference Figure 7 and Figure 8 The pressing knob 61 has a clearance hole, one end of the connecting post 42 is located in the clearance hole, and several connecting strips 432 are fixedly connected to the arc wall of the locking block 43. Several strip grooves are opened on the inner wall of the clearance hole. The maximum inner diameter formed by the clearance hole and the strip groove is consistent with the inner diameter of the insertion hole, and the arc groove 1112 is limited to a 90-degree arc groove.

[0049] During connection, the fixing block 45 is sequentially inserted into the axial groove 1111 and the limiting arc groove 1112. Then, one end of the connecting post 42 is inserted into the insertion hole, and the locking block 43 retracts into the sliding groove until the second frame 112 is attached to the first frame 111. The locking block 43 then enters the limiting hole. Pressing and rotating the pressing knob 61 causes the connecting strip 432 to enter the strip groove and rotate slightly with the pressing knob 61 until the connecting strip 432 enters the limiting member 1121. Releasing the pressing knob 61 causes the locking block 43 to partially enter the limiting member 1121 under the force of the return spring 44, thus achieving the effect of connecting the first frame 111 and the second frame 112. During unlocking, simply press the pressing knob 61 to make the locking block 43 enter the sliding groove, and the second frame 112 can be removed.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An electric linear actuator with an integrated housing, characterized in that: The device includes a housing (1), a drive motor (2), and a drive screw (3). The drive screw (3) is rotatably connected inside the housing (1). The drive motor (2) is mounted on the housing (1) and connected to the drive screw (3). A nut block (31) is slidably fitted inside the housing (1). The drive screw (3) passes through the nut block (31) and is threadedly fitted with the nut block (31). A push cylinder (32) is mounted on the nut block (31). The drive screw (3) is located inside the push cylinder (32). The push cylinder (32) is slidably fitted with the end of the housing (1) and is fitted with a top head (321) located outside the housing (1). (1) A fixing frame (11) is installed inside. The fixing frame (11) includes a first frame (111) and a second frame (112). The first frame (111) is installed inside the housing (1) and is rotatably connected to the output shaft of the drive motor (2). The second frame (112) is installed inside the housing (1) and is rotatably connected to the end of the drive screw (3). A connecting assembly (4) for connecting the first frame (111) is provided on the second frame (112). The connecting assembly (4) includes a connecting post (42), a locking block (43), a return spring (44), and a fixing block (45). The second frame (112) has several insertion holes. The connecting post (42) The connecting post (42) has several sliding grooves at one end, passing through the insertion hole. The connecting post (42) is cylindrical, and the sliding grooves coincide with the radial direction of the connecting post (42). A limiting post (421) is connected inside the connecting post (42). One end of the locking block (43) is provided with a guiding arc surface, and the other end is provided with a waist-shaped groove. A pressing block (431) is slidably fitted inside the waist-shaped groove. The return spring (44) is connected between the end of the waist-shaped groove and the pressing block (431). The limiting post (421) is located inside the waist-shaped groove, and the pressing block (431) fits against the surface of the limiting post (421). The other ends of several locking blocks (43) are along the limiting post (421). The columns (421) are stacked along their length. When locked, the locking block (43) partially fits against the second frame (112). The first frame (111) has a locking hole with an axial groove (1111) and a limiting arc groove (1112). The end of the limiting arc groove (1112) communicates with the axial groove (1111). The fixing block (45) is connected to the other end of the connecting column (42) and is located in the limiting arc groove (1112). The second frame (112) is provided with a limiting member (1121) that restricts the rotation of the connecting column (42). The second frame (112) is provided with an unlocking component (6) that unlocks the connecting component (4).The unlocking assembly (6) includes a pressing knob (61), a fixing ring (62), a connecting ring (63), and a connecting spring (64). The second frame (112) has several limiting holes. The locking block (43) fits against the bottom wall of the limiting hole. Two fixing rings (62) are connected to the inner wall of the limiting hole. The connecting ring (63) is connected to the pressing knob (61) and located between the two fixing rings (62). The connecting spring (64) is sleeved on the pressing knob (61) and located between the connecting ring (63) and the fixing ring (62) near the bottom wall of the limiting hole. The pressing knob (61) has a clearance hole. When unlocking, one end of the connecting post (42) is located inside the clearance hole, and the pressing knob (61) applies pressure to the guide arc surface.

2. The integrated electric actuator according to claim 1, characterized in that: The limiting member (1121) is a limiting groove. Several limiting members (1121) are provided on the inner bottom wall of the limiting hole, and each corresponds to one of the locking blocks (43). The limiting member (1121) and the locking block (43) are slidably engaged. Several connecting strips (432) are connected to the arc surface of the locking block (43). Several strip grooves matching the connecting strips (432) are provided on the inner ring wall of the pressing knob (61). The maximum inner diameter formed by the clearance hole and the strip groove is consistent with the inner diameter of the insertion hole. The limiting arc groove (1112) is a 90-degree arc groove.

3. The integrated electric actuator according to claim 1, characterized in that: A coupling (5) is provided between the drive motor (2) and the drive screw (3). The coupling (5) includes a first ring (51), a second ring (52) and an auxiliary torsion spring (53). The first ring (51) is inserted into the output shaft of the drive motor (2), and the second ring (52) is inserted into the drive screw (3). Several extension blocks (54) are connected to both the first ring (51) and the second ring (52). The extension blocks (54) on the first ring (51) and the second ring (52) are staggered. A stop block (541) is connected to the extension block (54). The auxiliary torsion spring (53) is sleeved between the extension blocks (54) and located between two stop blocks (541). The auxiliary torsion spring (53) is connected between the first ring (51) and the second ring (52).

4. The integrated electric actuator according to claim 1, characterized in that: The drive motor (2) is installed inside the housing (1) and is coaxially arranged with the drive screw (3).

5. The integrated electric actuator according to claim 1, characterized in that: The nut block (31) is provided with an assembly groove, and a limiting ring groove is provided in the assembly groove. A retaining sleeve (311) is installed in the limiting ring groove. A sliding sleeve (312) is fitted on the assembly groove. The sliding sleeve (312) is located between the retaining sleeve (311) and the end wall of the assembly groove. A plurality of limiting strips (12) are connected to the inner wall of the housing (1). The sliding sleeve (312) slides in cooperation with the limiting strips (12).

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