Double-stroke limiting power mechanism

Abstract

The utility model provides a double-stroke limiting power mechanism. The double-stroke limiting power mechanism comprises a power assembly, a transmission assembly, an electronic limiting assembly and a mechanical limiting assembly. The electronic limiting assembly comprises a magnetic part and a magnetic induction part, the magnetic part is arranged at the driving end of the driving part, the magnetic induction part is right opposite to the magnetic part, and the magnetic induction part is electrically connected with the controller; the mechanical limiting assembly comprises a rotating part, an upper limiting part, a lower limiting part and a limiting induction part, the rotating part is in transmission connection with the transmission assembly, the upper limiting part and the lower limiting part are arranged on the rotating part at intervals, and the limiting induction part is arranged on the shell part and located on rotating tracks of the upper limiting part and the lower limiting part. Compared with a traditional automatic clothes airing machine which only adopts a single mechanical limiting structure, the automatic clothes airing machine has the advantages that more limiting points can be arranged between the upper limiting point and the lower limiting point physically, the operability of the stroke of the automatic clothes airing machine is improved, and meanwhile the situation of limiting deviation is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical drive technical field, specifically, a double stroke limit power mechanism. BACKGROUND

[0002] With the development of science and technology and the progress of technology, more and more intelligent furniture appears and popularizes in family life, for example, automatic clothes drying machine and roller shutter door and window, the inside of which is provided with power mechanism for pulling the lifting of clothes drying steel cable or driving the winding of curtain. In order to ensure that the lifting of clothes drying steel cable and the winding of curtain are within the preset range, it is usually necessary to set a limiting mechanism on the power mechanism to limit the driving stroke of the power mechanism.

[0003] Nowadays, the power mechanism mostly uses a single limiting mechanism for limiting, such as using an electronic limiting mechanism alone or using a mechanical limiting mechanism alone, but with the increasing requirement for stroke control accuracy nowadays, the single limiting mechanism for limiting the driving stroke of the power mechanism often has the problem of limiting deviation, and the accuracy cannot be guaranteed. SUMMARY

[0004] In view of the deficiencies of the prior art, the application provides a double stroke limiting power mechanism.

[0005] The double stroke limiting power mechanism disclosed by the application comprises a power assembly, a transmission assembly, an electronic limiting assembly and a mechanical limiting assembly. The power assembly comprises a housing, a driving member and a controller, the driving member is arranged in the housing, and the controller is electrically connected with the driving member. The transmission assembly is in transmission connection with the driving end of the driving member. The electronic limiting assembly comprises a magnetic member and a magnetic sensing member. The magnetic member is arranged at the driving end of the driving member, and the magnetic sensing member is arranged in the housing and faces the magnetic member. The magnetic sensing member is electrically connected with the controller. The mechanical limiting assembly comprises a rotating member, an upper limiting member, a lower limiting member and a limiting sensing member. The upper limiting member and the lower limiting member are respectively arranged at intervals on the rotating member. The limiting sensing member is arranged in the housing and located on the rotating track of the upper limiting member and the lower limiting member. The limiting sensing member is electrically connected with the controller.

[0006] Preferably, the limiting sensing member comprises an upper limiting switch and a lower limiting switch. The upper limiting switch and the lower limiting switch are respectively arranged at intervals in the housing. The upper limiting switch is located on the rotating track of the upper limiting member, and the lower limiting switch is located on the rotating track of the lower limiting member. Both the upper limiting switch and the lower limiting switch are electrically connected with the controller.

[0007] Preferably, the driving member comprises a driving body and a worm. The driving body is arranged in the housing. One end of the worm is connected with the driving body, and the magnetic member is arranged at the other end of the worm. The worm is in transmission connection with the transmission assembly, and the controller is electrically connected with the driving body.

[0008] Preferably, the transmission assembly includes a first reducer and a second reducer, the first reducer being connected to a worm gear transmission, and the second reducer being connected to both the first reducer and the rotating component.

[0009] Preferably, the rotating component includes an upper rotating disk and a lower rotating disk, the lower rotating disk is connected to the transmission assembly, the upper rotating disk is disposed on the lower rotating disk, and the upper limit component and the lower limit component are respectively disposed on the upper rotating disk and the lower rotating disk.

[0010] Preferably, the rotating component further includes an adjusting part, the upper rotating disk and the lower rotating disk can rotate relative to each other, one end of the adjusting part is rotatably disposed on the lower rotating disk, and the other end of the adjusting part is engaged with the upper rotating disk; rotating the adjusting part causes the upper rotating disk to rotate relative to the lower rotating disk, so that the upper limit member moves closer to or further away from the lower limit member.

[0011] Preferably, the rotating component further includes a fastening part, one end of which is screwed to the lower rotating disk, and the other end of which abuts against the upper surface of the upper rotating disk.

[0012] Preferably, the rotating component also includes a latching part, which is located on the lower rotating disk. The upper rotating disk has a latching groove at the position corresponding to the latching part, and the latching groove and the latching part cooperate to form a latching locking structure.

[0013] Preferably, the limit sensor can be detachably installed on the housing.

[0014] Preferably, the first speed reducer includes a rotating column, a worm gear, and a rotating gear. The rotating column is rotatably mounted on the housing component, and the worm gear and rotating gear are respectively located at both ends of the rotating column. The worm gear meshes with the worm, and the rotating gear meshes with the second speed reducer.

[0015] The beneficial effects of this application are as follows: By setting up electronic limit components and mechanical limit components, this application simultaneously has a dual limit combination of electronic limit and mechanical limit. Compared with the traditional automatic clothes drying machine that only uses a single mechanical limit structure, it solves the problem that the single mechanical limit structure only has two physical limit points (upper / lower). Through the electronic limit components, more limit points can be set between the two physical upper / lower limit points, improving the operability of the automatic clothes drying machine's stroke. At the same time, multiple limit protections further improve the accuracy and stability of the automatic clothes drying machine's stroke, avoiding limit deviation. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the power mechanism with dual-stroke limiting in the embodiment;

[0018] Figure 2 This is another structural schematic diagram of the power mechanism with dual-stroke limiting in the embodiment;

[0019] Figure 3 This is a schematic diagram of the structure of the power component and the transmission component in the embodiment;

[0020] Figure 4 This is a schematic diagram of the structure of the second speed reducer in the embodiment;

[0021] Figure 5 for Figure 1 Enlarged view of section A in the middle;

[0022] Figure 6 This is a schematic diagram of the upper rotating disk in the embodiment;

[0023] Figure 7 This is a schematic diagram of the structure of the lower rotating disk in the embodiment;

[0024] Figure 8 This is another structural schematic diagram of the upper and lower rotating disk in the embodiment.

[0025] Figure label:

[0026] 1. Power assembly; 11. Housing component; 12. Drive component; 121. Drive body; 122. Worm gear; 2. Transmission assembly; 21. First reducer; 211. Rotating column; 212. Worm wheel; 213. Rotating gear; 22. Second reducer; 221. Reducer wheel body; 222. Reducer gear; 223. First transmission gear; 224. Second transmission gear; 3. Electronic limit assembly; 31. Magnetic component; 32. Magnetic sensing component; 4. Mechanical limit assembly; 41. Rotating component; 411. Upper rotating disk; 4111. Snap-on slot; 4112. Upper rotating disk body; 4113. Cover plate; 412. Lower rotating disk; 413. Adjustment part; 4131. Adjustment column; 4132. Adjustment gear; 414. Fastening part; 415. Snap-on part; 42. Upper limit component; 43. Lower limit component; 44. Limit sensing component; 441. Upper limit switch; 442. Lower limit switch. Detailed Implementation

[0027] The following drawings disclose several embodiments of this application. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this application. That is, in some embodiments of this application, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0028] It should be noted that all directional indications in the embodiments of this application, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0029] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit this application. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0030] To further understand the content, features, and effects of this application, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0031] Reference Figures 1-3 , Figure 1 This is a schematic diagram of the power mechanism with dual-stroke limiting in the embodiment. Figure 2 This is another structural schematic diagram of the power mechanism with dual-stroke limiting in the embodiment. Figure 3 The diagram illustrates the structure of the power assembly and transmission assembly in this embodiment. The dual-stroke limiting power mechanism includes a power assembly 1, a transmission assembly 2, an electronic limiting assembly 3, and a mechanical limiting assembly 4. The power assembly 1 includes a housing 11, a drive assembly 12, and a controller. The drive assembly 12 is located on the housing 11, and the controller is electrically connected to the drive assembly 12. The transmission assembly 2 is drively connected to the drive end of the drive assembly 12. The electronic limiting assembly 3 includes a magnetic element 31 and a magnetic sensing element 32. The magnetic element 31 is located on the drive end of the drive assembly 12, and the magnetic sensing element 32 is located on the housing 11 and directly opposite the magnetic element 31. The magnetic sensing element 32 is electrically connected to the controller. The mechanical limit assembly 4 includes a rotating component 41, an upper limit component 42, a lower limit component 43, and a limit sensor 44. The rotating component 41 is connected to the transmission assembly 2. The upper limit component 42 and the lower limit component 43 are respectively spaced apart on the rotating component 41. The limit sensor 44 is located on the housing component 11 and is located on the rotation trajectory of the upper limit component 42 and the lower limit component 43. The limit sensor 44 is electrically connected to the controller.

[0032] The dual-stroke limiting power mechanism in this embodiment can be applied to automatic clothes drying racks or roller shutters to drive the clothes drying cable to rise and fall or to move curtains up and down. This embodiment uses an automatic clothes drying rack for illustration. In specific application, a rope winder is installed on the transmission component 2, and the clothes drying cable is wound around the rope winder. The clothes drying cable is connected to the clothes rack. The driving component 12 drives the transmission component 2 to rotate, and the rotation of the transmission component 2 drives the rope winder to rotate, thereby realizing the raising and lowering of the clothes drying cable to control the raising and lowering of the clothes rack. When the driving component 12 drives the transmission component 2 to rotate, the magnetic component 31 located on the driving end of the driving component 12 also rotates. The magnetic sensing component 32 senses the number of rotations of the magnetic component 31 and controls the driving component 12 to start and stop via a controller, achieving electronic limiting. When the transmission component 2 rotates, it also drives the upper limit component 42 and the lower limit component 43 to move synchronously. When the upper limit component 42 and the lower limit component 43 move to the limit sensor 44, the limit sensor 44 is triggered, causing the limit sensor 44 to control the drive component 12 to stop driving through the controller, thus achieving mechanical limiting. With the setting of electronic limit component 3 and mechanical limit component 4, this embodiment has a dual limit combination of electronic limit and mechanical limit. Compared with the traditional automatic clothes drying machine that only uses a single mechanical limit structure, it solves the problem that the single mechanical limit structure only has two physical limit points (upper / lower). Through the electronic limit component 3, more limit points can be set between the two physical upper / lower limit points, improving the operability of the automatic clothes drying machine's stroke. At the same time, multiple limit protections further improve the accuracy and stability of the automatic clothes drying machine's stroke, avoiding limit deviation.

[0033] Rereference Figure 3 Preferably, the driving component 12 includes a driving body 121 and a worm gear 122. The driving body 121 is disposed on the housing component 11. One end of the worm gear 122 is connected to the driving body 121, and a magnetic component 31 is disposed on the other end of the worm gear 122. The worm gear 122 is connected to the transmission assembly 2 for transmission, and the controller is electrically connected to the driving body 121. In specific applications, the driving body 121 is a drive motor used to transmit rotational power to the worm gear 122, and the magnetic component 31 is disposed on the end of the worm gear 122 away from the driving body 121. The magnetic component 31 is a magnet, and the magnetic sensing component 32 is a Hall plate. It can be understood that when the driving body 121 drives the worm gear 122 to rotate, the magnetic component 31 also rotates accordingly. The magnetic sensing component 32 senses the number of rotations of the magnetic component 31 and controls the switch of the driving component 12 to achieve electronic limit. Specifically, the housing component 11 is a machine casing. The controller is a motor control board.

[0034] Reference Figure 4 , Figure 4The diagram below illustrates the structure of the second speed reducer in this embodiment. Preferably, the transmission assembly 2 includes a first speed reducer 21 and a second speed reducer 22. The first speed reducer 21 is connected to the worm gear 122, and the second speed reducer 22 is connected to both the first speed reducer 21 and the rotating component 41. The arrangement of the first speed reducer 21 and the second speed reducer 22 enables speed reduction transmission. In this embodiment, a two-stage speed reduction transmission is used, which reduces the rotation speed of the rope reel mounted on the second speed reducer 22, facilitating more precise control of the rope reel's rotation and improving the accuracy of the clothesline's raising and lowering, thus enhancing the accuracy of the clothes rack's lifting and lowering. Of course, in other embodiments, multi-stage speed reduction can be implemented according to actual application requirements; this is not limited here.

[0035] Rereference Figures 1-4 Preferably, the first reduction component 21 includes a rotating column 211, a worm gear 212, and a rotating gear 213. The rotating column 211 is rotatably mounted on the housing 11. The worm gear 212 and the rotating gear 213 are respectively located at both ends of the rotating column 211. The worm gear 212 meshes with the worm 122, and the rotating gear 213 meshes with the second reduction component 22. In specific applications, the second reduction component 22 includes a reduction wheel body 221, a reduction gear 222, a first transmission gear 223, and a second transmission gear 224. The reduction wheel body 221 is rotatably mounted on the housing 11. The reduction gear 222 is arranged around the side of the reduction wheel body 221 and meshes with the rotating gear 213. The first transmission gear 223 is located on the upper surface of the reduction wheel body 221, and the second transmission gear 224 meshes with the first transmission gear 223 and the rotating component 41, respectively. Specifically, the rope winder is fixedly mounted on the lower surface of the reduction wheel body 221 or integrally formed on the lower surface of the reduction wheel body 221.

[0036] Reference Figure 5 , Figure 5 for Figure 1 In the enlarged view of part A, preferably, the rotating component 41 includes an upper rotating disk 411 and a lower rotating disk 412. The lower rotating disk 412 is connected to the transmission assembly 2. The upper rotating disk 411 is disposed on the lower rotating disk 412. An upper limit member 42 and a lower limit member 43 are respectively disposed on the upper rotating disk 411 and the lower rotating disk 412. In specific applications, the upper limit member 42 is an upper limit contact rod, which is disposed at the edge of the upper rotating disk 411, and the lower limit member 43 is a lower limit contact rod, which is disposed at the edge of the lower rotating disk 412. The upper limit member 42 and the lower limit member 43 are spaced apart from each other and staggered in position. Specifically, the bottom of the lower rotating disk 412 is provided with an internal gear ring, and the lower rotating disk 412 meshes with the second transmission gear 224 through the internal gear ring.

[0037] Refer to together Figures 6-8 , Figure 6 This is a schematic diagram of the upper rotating disk in the embodiment. Figure 7 This is a schematic diagram of the structure of the upper and lower rotating disk in the embodiment. Figure 8As shown in another schematic diagram of the upper and lower rotating disks in the embodiment, preferably, the rotating component 41 further includes an adjusting part 413. The upper rotating disk 411 and the lower rotating disk 412 can rotate relative to each other. One end of the adjusting part 413 is rotatably disposed on the lower rotating disk 412, and the other end of the adjusting part 413 is engaged with the upper rotating disk 411. Rotating the adjusting part 413 causes the upper rotating disk 411 to rotate relative to the lower rotating disk 412, causing the upper limit member 42 to move closer to or further away from the lower limit member 43. In practical applications, the adjusting unit 413 includes an adjusting column 4131 and an adjusting gear 4132. One end of the adjusting column 4131 is rotatably mounted on the lower rotating disk 412, and the adjusting gear 4132 is mounted on the other end of the adjusting column 4131. The end face of the adjusting column 4131 is provided with a cross groove to facilitate twisting and rotation using tools. A gear ring is provided inside the upper rotating disk 411, and the upper rotating disk 411 meshes with the adjusting gear 4132 through the gear ring. It can be understood that by rotating the adjusting column 4131, the adjusting gear 4132 is driven to rotate, thereby adjusting the position of the adjusting column 4131. The rotation of gear 4132 causes the upper rotating disk 411 to rotate relative to the lower rotating disk 412. At this time, the upper limit member 42 can move closer to or further away from the lower limit member 43, thus adjusting the offset distance between the upper limit member 42 and the lower limit member 43. When the upper limit member 42 touches the limit sensor 44, the automatic clothes drying rack stops rising. By adjusting the offset distance between the upper limit member 42 and the lower limit member 43, it is equivalent to adjusting the angle of the upper limit member 42, thereby meeting the different needs of users for the maximum rising height of the automatic clothes drying rack. Specifically, the limit sensor 44 is detachably installed on the housing 11. It can be understood that by changing the position of the limit sensor 44, the distance between the limit sensor 44 and the upper limit member 42 and the lower limit member 43 can also be adjusted accordingly, thereby adjusting the maximum rising height and maximum falling height of the automatic clothes drying rack. In this embodiment, the limit sensor 44 is detachably installed by screws. Of course, in other embodiments, snap-fit, sliding, or other methods can also be used, which are not limited here.

[0038] Rereference Figures 6-8Preferably, the rotating component 41 further includes a fastening part 414, one end of which is screwed to the lower rotating disk 412, and the other end of which abuts against the upper surface of the upper rotating disk 411. In specific applications, the fastening part 414 is a fastening screw. The upper rotating disk 411 includes an upper rotating disk body 4112 and a cover plate 4113. The cover plate 4113 covers the upper rotating disk body 4112, and a toothed ring is provided inside the upper rotating disk body 4112. The other end of the fastening part 414 abuts against the upper surface of the cover plate 4113. It can be understood that by setting the fastening part 414, the relative position of the upper rotating disk 411 and the lower rotating disk 412 can be fixed, preventing the upper rotating disk 411 and the lower rotating disk 412 from rotating relative to each other, that is, preventing the change of the distance between the upper limit component 42 and the lower limit component 43, ensuring the accuracy of mechanical limit control and improving stability. Furthermore, the rotating component 41 also includes a latching part 415, which is located on the lower rotating disk 412. The upper rotating disk 411 has a latching groove 4111 corresponding to the position of the latching part 415. The latching groove 4111 and the latching part 415 cooperate to form a latching locking structure. The cooperation between the latching groove 4111 and the latching part 415 not only ensures that the cover plate 4113 is securely placed on the upper rotating disk body 4112, but also prevents relative rotation between the upper rotating disk 411 and the lower rotating disk 412, improving the stability of their relative positions. Specifically, the latching part 415 is a latch, and the latching groove 4111 is located on the cover plate 4113. There are three latching grooves 4111 and three latching parts 415, and the lines connecting the three latching parts 415 in sequence form a triangle.

[0039] Rereference Figures 6-8 Preferably, the limit sensor 44 includes an upper limit switch 441 and a lower limit switch 442, which are respectively spaced apart on the housing 11. The upper limit switch 441 is located on the rotation trajectory of the upper limit switch 42, and the lower limit switch 442 is located on the rotation trajectory of the lower limit switch 43. Both the upper limit switch 441 and the lower limit switch 442 are electrically connected to the controller. In specific applications, both the upper limit switch 441 and the lower limit switch 442 are limit switches. It can be understood that when the upper limit switch 42 rotates and lightly touches the upper limit switch 441, the drive unit 12 stops driving, the rope reel stops rotating to reel in the rope, that is, the automatic clothes dryer stops rising; when the lower limit switch 43 rotates and lightly touches the lower limit switch 442, the drive unit 12 stops driving, the rope reel stops rotating to unload the rope, that is, the automatic clothes dryer stops descending. In this way, the maximum rising height and the minimum falling height of the automatic clothes dryer can be mechanically limited.

[0040] In summary, by incorporating the electronic limit component 3 and the mechanical limit component 4, this embodiment simultaneously features a dual limit combination of electronic and mechanical limits. Compared to the traditional automatic clothes drying machine that only uses a single mechanical limit, this solves the problem that the single mechanical limit structure only has two physical limit points (upper and lower). The electronic limit component 3 allows for the setting of more limit points between the two physical upper and lower limit points, improving the operability of the automatic clothes drying machine's stroke. At the same time, the multiple limit protections further enhance the accuracy and stability of the automatic clothes drying machine's stroke, preventing limit deviation.

[0041] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A double-stroke limited power mechanism, characterized by, include: A power assembly (1) includes a housing (11), a drive (12) and a controller, wherein the drive (12) is disposed on the housing (11) and the controller is electrically connected to the drive (12); Transmission assembly (2), which is connected to the drive end of the drive member (12); An electronic limiting assembly (3) includes a magnetic element (31) and a magnetic sensing element (32). The magnetic element (31) is disposed at the driving end of the driving element (12), and the magnetic sensing element (32) is disposed on the housing element (11) and directly opposite the magnetic element (31). The magnetic sensing element (32) is electrically connected to the controller. The mechanical limiting assembly (4) includes a rotating component (41), an upper limiting component (42), a lower limiting component (43), and a limiting sensor (44). The rotating component (41) is connected to the transmission assembly (2). The upper limiting component (42) and the lower limiting component (43) are respectively spaced apart from the rotating component (41). The limiting sensor (44) is located on the housing component (11) and is located on the rotation trajectory of the upper limiting component (42) and the lower limiting component (43). The limiting sensor (44) is electrically connected to the controller.

2. The dual-stroke limited travel power mechanism of claim 1, wherein, The limit sensor (44) includes an upper limit switch (441) and a lower limit switch (442). The upper limit switch (441) and the lower limit switch (442) are respectively spaced apart on the housing (11). The upper limit switch (441) is located on the rotation trajectory of the upper limit sensor (42), and the lower limit switch (442) is located on the rotation trajectory of the lower limit sensor (43). Both the upper limit switch (441) and the lower limit switch (442) are electrically connected to the controller.

3. The dual-stroke limited travel power mechanism of claim 1, wherein, The driving component (12) includes a driving body (121) and a worm gear (122). The driving body (121) is disposed on the housing component (11). One end of the worm gear (122) is connected to the driving body (121). The magnetic component (31) is disposed on the other end of the worm gear (122). The worm gear (122) is connected to the transmission assembly (2) for transmission. The controller is electrically connected to the driving body (121).

4. The dual-stroke limited travel power mechanism of claim 3, wherein, The transmission assembly (2) includes a first reducer (21) and a second reducer (22). The first reducer (21) is connected to the worm gear (122) and the second reducer (22) is connected to the first reducer (21) and the rotating component (41) respectively.

5. The dual-stroke limited travel power mechanism of claim 1, wherein, The rotating component (41) includes an upper rotating disk (411) and a lower rotating disk (412). The lower rotating disk (412) is connected to the transmission assembly (2). The upper rotating disk (411) is disposed on the lower rotating disk (412). The upper limit component (42) and the lower limit component (43) are respectively disposed on the upper rotating disk (411) and the lower rotating disk (412).

6. The dual-stroke limited travel power mechanism of claim 5, wherein, The rotating member (41) further comprises an adjusting part (413), the upper rotating disc (411) is relatively rotatable with the lower rotating disc (412), one end of the adjusting part (413) is rotatably arranged on the lower rotating disc (412), and the other end of the adjusting part (413) is engaged with the upper rotating disc (411); rotating the adjusting part (413) drives the upper rotating disc (411) to rotate relative to the lower rotating disc (412), so that the upper limiting part (42) is close to or away from the lower limiting part (43).

7. The dual-stroke limited travel power mechanism of claim 6, wherein, The rotating member (41) further comprises a fastening part (414), one end of the fastening part (414) is screwed with the lower rotating disc (412), and the other end of the fastening part (414) is abutted with the upper surface of the upper rotating disc (411).

8. The dual-stroke limited travel power mechanism of claim 6, wherein, The rotating member (41) further comprises a buckle part (415), the buckle part (415) is arranged on the lower rotating disc (412), the upper rotating disc (411) is provided with a buckle groove (4111) corresponding to the position of the buckle part (415), and the buckle groove (4111) and the buckle part (415) cooperate to form a buckle locking structure.

9. The dual-stroke limited travel power mechanism of claim 1, wherein, The limiting sensing part (44) is detachably arranged on the shell member (11).

10. The dual-stroke limited travel power mechanism of claim 4, wherein, The first speed reduction part (21) comprises a rotating column (211), a worm wheel (212) and a rotating gear (213), the rotating column (211) is rotatably arranged on the shell member (11), the worm wheel (212) and the rotating gear (213) are arranged at two ends of the rotating column (211) respectively, the worm wheel (212) is engaged with the worm (122), and the rotating gear (213) is engaged with the second speed reduction part (22).

Images