Intelligent scrubbing machine

Abstract

This utility model relates to the field of bathing equipment technology, and more particularly to an intelligent scrubbing machine. It includes a housing with a guide hole on the outer wall. A scrubbing mechanism capable of vertical movement is installed within the guide hole, along with a waterproof mechanism. Water outlet regulating valves and hot / cold water regulating valves are located on both sides of the lower end of the housing. A top shower is located at the upper end of the housing, with a shower head bracket on one side of the top shower, holding the shower head. A touch screen and a control PCB board are also located on the housing above the guide hole. A battery storage slot is located on the side wall of the housing, containing a removable rechargeable lithium battery. This utility model achieves vertical movement and scrubbing action through the scrubbing mechanism. The waterproof mechanism prevents water from entering the housing. The water outlet regulating valve switches the water flow, the hot / cold water regulating valve adjusts the water temperature, the touch screen is easy to operate, and the rechargeable lithium battery provides safe and convenient power. It is highly safe, widely applicable, and suitable for various groups, especially those with mobility impairments.

Description

Technical Field

[0001] This utility model relates to the field of bathing equipment technology, and in particular to an intelligent body scrubber. Background Technology

[0002] In daily life, people usually need to manually scrub their bodies when bathing. For the elderly, disabled, or those with limited mobility, this is particularly difficult, especially on the back. Currently, most bathing equipment on the market focuses on water spraying and lacks automated scrubbing devices. Although a few scrubbing devices exist, they suffer from problems such as complex structure, inconvenient operation, poor applicability, poor waterproofing, and insufficient safety. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an intelligent scrubbing machine. This machine has a reasonable structural design and achieves automated scrubbing. The brush head of the machine has a certain frictional force, rotational force, and forward / reverse rotation function. It can more deeply clean areas that are difficult to reach by hand, such as the back and shoulders, removing dirt, keratin, and dead skin, more thoroughly than manual scrubbing. The machine also has a massage function, massaging back muscles while cleaning, promoting blood circulation, enhancing the bathing experience. It is easy to operate, has excellent waterproof performance, high safety, wide applicability, and a superior user experience.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] The intelligent body scrubber includes a housing with guide holes on the outer wall. A scrubbing mechanism that can move up and down is installed inside the guide holes. A waterproof mechanism is also installed inside the guide holes. Water outlet regulating valves and hot and cold water regulating valves are installed on both sides of the lower end of the housing. A top shower is installed at the upper end of the housing, and a shower head bracket is installed on one side of the top shower, holding the shower head. A touch screen and a control PCB board are also installed on the housing above the guide holes. A battery storage slot is also provided on the side wall of the housing, where a removable rechargeable lithium battery is placed.

[0006] Furthermore, the outlet regulating valve is connected to the shower head and the overhead shower head via the first and second water pipes respectively, the hot and cold water regulating valve is connected to the outlet regulating valve via the third water pipe, and the hot and cold water regulating valve is also connected to the external hot water source and cold water source via the fourth and fifth water pipes respectively.

[0007] Furthermore, the scrubbing mechanism includes a vertical slide block with a guide groove. A guide rail that slides within the housing engages with the guide groove. A rack is provided on one side of the guide rail. A linear displacement gear meshes with the rack within the vertical slide block. A vertical motor and a scrubbing motor are housed within the vertical slide block. The output shaft of the vertical motor is connected to a first worm gear, which meshes with a first gear. The first gear is connected to the linear displacement gear via a first gear set. The output shaft of the scrubbing motor is connected to a second worm gear, which meshes with a second and a third gear. The second gear meshes with a fourth gear. A first output shaft is connected to the center of the fourth gear, and a first scrubbing wheel is mounted on the first output shaft. The third gear meshes with a fifth gear. The center of the fifth gear is connected to a second output shaft, and a second scrubbing wheel is mounted on the second output shaft. The third gear is connected to a sixth gear via a second gear set. The center of the sixth gear is connected to a third output shaft, and a third scrubbing wheel is mounted on the third output shaft.

[0008] Furthermore, the waterproofing mechanism includes several waterproof strips installed in the guide hole. The several waterproof strips are tensioned by two sets of upper and lower guide shafts. The guide shafts are rotatably connected inside the housing. The several waterproof strips are respectively fixedly connected to the vertical slide.

[0009] Furthermore, the intelligent bath scrubber also includes a position sensing mechanism installed inside the housing. The position sensing mechanism includes a sensing PCB board with N first Hall sensors on it, and a first sensing magnet that senses the first Hall sensors is provided on the vertical slide.

[0010] Furthermore, the intelligent bath scrubber also includes a double-safety sensing mechanism installed at both ends of the guide hole. The double-safety sensing mechanism includes an upper sensing contact and a lower sensing contact. The upper and lower sensing contact are respectively flexibly inserted into an upper sensing base and a lower sensing base. The upper and lower sensing bases are respectively provided with a second Hall sensor. The upper and lower sensing contact are each equipped with a second sensing magnet that senses the second Hall sensor.

[0011] Furthermore, spring-loaded pins are provided on the first, second, and third output shafts, and slots matching the spring-loaded pins are provided on the first, second, and third bath rollers.

[0012] Furthermore, a guide rod is also provided inside the housing, and a spiral wire is sleeved on the outside of the guide rod. The vertical slide is electrically connected to the control PCB board through the spiral wire.

[0013] Furthermore, an emergency switch is provided on the outside of the housing, and the emergency switch is electrically connected to the control PCB board.

[0014] Furthermore, there are two guide rails, three waterproof strips, and three guide holes. The two guide rails separate the three waterproof strips at intervals. The first output shaft, the second output shaft, and the third output shaft are slidably passed through the three guide holes, and the three waterproof strips correspond one-to-one with the three guide holes.

[0015] Compared with the existing technology, the intelligent body scrubber provided by this utility model has the following beneficial effects:

[0016] 1. This utility model achieves automatic body scrubbing by setting up an up-and-down movable scrubbing mechanism, eliminating the need for manual operation and making it particularly suitable for the elderly, disabled, and other people with limited mobility.

[0017] 2. The guide hole of this utility model is equipped with a waterproof mechanism, which effectively prevents water from entering the shell during bathing, ensuring the normal operation of the equipment and extending its service life.

[0018] 3. The housing of this utility model is equipped with a touch screen, which makes it convenient for users to operate and control the operation of the scrubbing mechanism. The water outlet regulating valve can control the switching between the shower head and the overhead shower, and the hot and cold water regulating valve can control the water temperature, making it easy to use.

[0019] 4. This utility model uses a removable rechargeable lithium battery for power supply, which avoids the safety hazards caused by wired power supply, and is also convenient for replacement and charging.

[0020] 5. The position sensing mechanism and double-safety sensing mechanism of this utility model can accurately control the up and down movement of the scrubbing mechanism, making it suitable for people of different heights and with a wide range of applications. At the same time, it also prevents the movement from exceeding the range of motion, thus improving the safety of the equipment.

[0021] 6. The output shaft of this utility model is connected to the scrubbing wheel through a spring clip, which makes it easy to disassemble and replace, and facilitates cleaning and maintenance.

[0022] 7. This utility model ensures stable power supply when the vertical slide moves up and down by using a spiral wire, while avoiding the problem of wire tangling.

[0023] 8. This utility model, through the setting of an emergency switch, can quickly stop the operation of the equipment in the event of an emergency, further improving the safety of use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the intelligent bath scrubber of this utility model;

[0025] Figure 2 This is a schematic diagram of the overall structure of the intelligent bath scrubber of this utility model from another side;

[0026] Figure 3 This is an exploded view of the intelligent bath scrubber of this utility model;

[0027] Figure 4 This is a schematic diagram of the scrubbing mechanism of the intelligent scrubbing machine of this utility model;

[0028] Figure 5 This is a partial front view of the scrubbing rollers and output shaft of the intelligent scrubbing machine of this utility model;

[0029] Figure 6 This is a schematic diagram of a partial internal structure of the casing of the intelligent bath scrubber of this utility model;

[0030] Figure 7 This is a schematic diagram of the water system of the intelligent bath scrubber of this utility model;

[0031] Figure 8 This is a structural diagram of the double-insurance sensing mechanism of the intelligent bath scrubber of this utility model.

[0032] Labels in the diagram: 1. Housing; 2. Guide hole; 3. Scrubbing mechanism; 31. Vertical slide; 32. Guide groove; 33. Guide rail; 34. Rack; 35. Linear displacement gear; 36. Vertical motor; 361. First worm gear; 362. First gear; 363. First gear set; 37. Scrubbing motor; 371. Second worm gear; 372. Second gear; 373. Third gear; 374. Fourth gear; 375. First output shaft; 376. First scrubbing wheel; 378. Fifth gear; 379. Second output shaft; 380. Second scrubbing wheel; 381. Second gear set; 382. Sixth gear; 383. Third output shaft; 384. Third scrubbing wheel; 4. Waterproofing mechanism; 41. Waterproof cloth strip; 42. 1. Guide shaft; 5. Outlet regulating valve; 6. Hot and cold water regulating valve; 7. Overhead shower; 8. Shower head bracket; 9. Shower head; 10. Touch screen; 101. Control PCB board; 11. Battery holder; 12. Rechargeable lithium battery; 13. First water pipe; 14. Second water pipe; 15. Third water pipe; 16. Fourth water pipe; 17. Fifth water pipe; 18. Position sensing mechanism; 181. Sensing PCB board; 182. First Hall sensor; 19. Double-safety sensing mechanism; 191. Upper sensing contact; 192. Lower sensing contact; 193. Upper sensing base; 194. Lower sensing base; 195. Second Hall sensor; 20. Spring clip; 201. Slot; 21. Guide rod; 22. Spiral wire; 23. Emergency switch. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0034] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0035] like Figures 1-3 As shown, the intelligent scrubbing machine includes a housing 1. A guide hole 2 is provided on the outer wall of the housing 1. A scrubbing mechanism 3, capable of moving up and down, is installed within the guide hole 2. A waterproof mechanism 4 is also installed within the guide hole 2. Water outlet regulating valves 5 and hot / cold water regulating valves 6 are located on both sides of the lower end of the housing 1. A top shower 7 is located at the upper end of the housing 1. A shower head bracket 8 is located on one side of the top shower 7, holding a shower head 9. A touch screen 10 and a control PCB board 101 are also located on the housing 1 above the guide hole 2. The touch screen 10 is electrically connected to the control PCB board 101. A battery receiving slot 11 is also provided on the side wall of the housing 1. A removable rechargeable lithium battery 12 is placed in the battery receiving slot 11. A handle is provided on one side of the rechargeable lithium battery 12 for easy removal of the battery. The removable rechargeable lithium battery 12 avoids the safety hazards associated with wired power supply, providing a certain level of safety, while also facilitating replacement and charging.

[0036] Specifically, such as Figure 2 , Figure 6 and Figure 7 As shown, the outlet regulating valve 5 is connected to the shower head 9 and the overhead shower head 7 via the first water pipe 13 and the second water pipe 14, respectively. The hot and cold water regulating valve 6 is connected to the outlet regulating valve 5 via the third water pipe 15. The hot and cold water regulating valve 6 is also connected to the external hot water source and cold water source via the fourth water pipe 16 and the fifth water pipe 17, respectively. The ratio of hot and cold water entering the equipment can be adjusted by the hot and cold water regulating valve 6, thereby adjusting the outlet water temperature. The outlet regulating valve 5 can control the water output status of the shower head 9 and the overhead shower head 7, thereby realizing the water path switching between the shower head 9 and the overhead shower head 7. It is simple to use and easy to operate.

[0037] like Figure 3 and Figure 4As shown, the scrubbing mechanism 3 includes a vertical slide 31 with two guide grooves 32 spaced apart. Two guide rails 33 are respectively provided inside the housing 1, slidingly engaging with the two guide grooves 32. A rack 34 is provided on one side of each guide rail 33. A linear displacement gear 35 meshing with the rack 34 is provided inside the vertical slide 31. Furthermore, a vertical motor 36 and a scrubbing motor 37 are provided inside the vertical slide 31. The vertical motor 36 is located at the bottom of the vertical slide 31, and the scrubbing motor 37 is located at... At the top of the vertical slide block 31, the output shaft of the vertical motor 36 is connected to a first worm gear 361, which meshes with a first gear 362. The first gear 362 is connected to a linear displacement gear 35 via a first gear set 363. When the vertical motor 36 is working, it drives the linear displacement gear 35 to rotate through the first worm gear 361, the first gear 362, and the first gear set 363. Since the linear displacement gear 35 meshes with the rack 34, the vertical slide block 31 moves up and down along the guide rail 33.

[0038] Closely connected to the ground, the output shaft of the scrubbing motor 37 is connected to a second worm gear 371. The second worm gear 371 meshes with a second gear 372 and a third gear 373. The second gear 372 meshes with a fourth gear 374. The center of the fourth gear 374 is connected to a first output shaft 375. A first scrubbing wheel 376 is mounted on the first output shaft 375. The third gear 373 meshes with a fifth gear 378. The center of the fifth gear 378 is connected to a second output shaft 379. A second scrubbing wheel 380 is mounted on the second output shaft 379. The third gear 373 is connected to a sixth gear 382 via a second gear set 381. The center of the sixth gear 382 is connected to a third output shaft 383. A third scrubbing wheel 384 is fitted onto shaft 383. When the scrubbing motor 37 is working, it drives the second gear 372 and the third gear 373 to rotate via the second worm gear 371. The second gear 372 drives the fourth gear 374 to rotate, the fourth gear 374 drives the first output shaft 375 to rotate, the third gear 373 drives the fifth gear 378 to rotate, the fifth gear 378 drives the second output shaft 379 to rotate, and at the same time the third gear 373 rotates, it also drives the sixth gear 382 to rotate via the second gear set 381. The sixth gear 382 drives the third output shaft 383 to rotate, thereby driving the first scrubbing wheel 376, the second scrubbing wheel 380 and the third scrubbing wheel 384 to rotate respectively, thus realizing the scrubbing function.

[0039] To facilitate the replacement, cleaning, and maintenance of the first scrubbing roller 376, the second scrubbing roller 380, and the third scrubbing roller 384, such as Figure 5As shown, spring pins 20 are provided on the first output shaft 375, the second output shaft 379, and the third output shaft 383. The first scrubbing roller 376, the second scrubbing roller 380, and the third scrubbing roller 384 are provided with slots 201 that match the spring pins 20. Through the cooperation of the spring pins 20 and the slots 201, the scrubbing rollers and the output shafts can be detachably connected, which is convenient for replacing different types of scrubbing rollers or cleaning them. In addition, the scrubbing rollers can also be fitted with different scrubbing cotton, massage modules, and other massage or scrubbing devices, which further expands the scope of application of this utility model and has strong practicality.

[0040] In this embodiment, as Figure 3 As shown, there are three guide holes 2. The waterproof mechanism 4 includes three waterproof strips 41 installed in the three guide holes 2 respectively. The three waterproof strips 41 are tensioned by two sets of guide shafts 42. The two sets of guide shafts 42 are rotatably connected to the upper and lower sides of the guide holes 2 inside the housing 1. The three waterproof strips 41 are fixedly connected to the vertical slide 31 respectively. Two guide rails 33 separate the three waterproof strips 41. The first output shaft 375, the second output shaft 379 and the third output shaft 383 are slidably inserted through the two guide holes 2 respectively. The three waterproof strips 41 correspond one-to-one with the three guide holes 2, so that the waterproof strips 41 and the guide holes 2 form a seal. When the vertical slide 31 moves up and down, it drives the waterproof strips 41 to move synchronously, always maintaining the seal at the guide holes 2 and preventing water from entering the housing 1. At the same time, the waterproof strips 41 play a certain guiding role between the guide rails 33, ensuring the operational stability of the device.

[0041] like Figure 3 and Figure 6 As shown, this washing machine also includes a position sensing mechanism 18 installed inside the housing 1. The position sensing mechanism 18 includes a sensing PCB board 181, which is disposed on one side inside the housing 1. Six first Hall sensors 182 are disposed on the sensing PCB board 181. A first sensing magnet that senses the first Hall sensors 182 is disposed on the vertical slide 31. The first Hall sensors 182 are electrically connected to the sensing PCB board 181, and the sensing PCB board 181 is electrically connected to the control PCB board 101. By sensing the first Hall sensors 182 at different positions with the first sensing magnet, the position of the vertical slide 31 can be accurately detected, and the signal can be transmitted to the control PCB board 101 to achieve precise control of the movement of the vertical slide 31.

[0042] like Figure 1 , Figure 3 and Figure 8As shown, this washing machine also includes a double-safety sensing mechanism 19 installed at both ends of the central guide hole 2. The double-safety sensing mechanism 19 includes an upper sensing contact 191 and a lower sensing contact 192. The upper sensing contact 191 and the lower sensing contact 192 are respectively elastically inserted into the upper sensing base 193 and the lower sensing base 194. The upper sensing contact 191 is inserted into the upper sensing base 193 by a spring or torsion spring, and the lower sensing contact 192 is inserted into the lower sensing base 194 by a spring or torsion spring. The upper sensing base 193 and the lower sensing base 194 are respectively equipped with a second Hall sensor 195. The upper sensing contact 191... Both the upper and lower sensing contacts 192 are equipped with second sensing magnets that sense the second Hall sensor 195. The second Hall sensor 195 is electrically connected to the control PCB board 101. When the vertical slide 31 moves to the upper or lower limit position of the guide hole 2, it will touch the upper sensing contact 191 or the lower sensing contact 192, causing the upper sensing contact 191 or the lower sensing contact 192 to displace. The second sensing magnet triggers the corresponding second Hall sensor 195 to send a signal. After receiving the signal, the control PCB board 101 controls the vertical motor 36 to stop working, preventing the vertical slide 31 from exceeding the range of motion, thus providing dual protection.

[0043] like Figure 3 and Figure 6 As shown, in order to ensure that the internal wiring of this washing machine is not messy, a guide rod 21 is also provided on one side of the housing 1 above the sensing PCB board 181. A spiral wire 22 is sleeved on the outside of the guide rod 21. The vertical slide 31 is electrically connected to the control PCB board 101 through the spiral wire 22. The spiral wire 22 can extend and retract with the up and down movement of the vertical slide 31 to ensure the stability of the power supply and at the same time avoid the wire from getting tangled.

[0044] To ensure the safety of this washing machine, an emergency switch 23 is installed on the outside of the housing 1. The emergency switch 23 is electrically connected to the control PCB board 101. In case of emergency, pressing the emergency switch 23 can immediately cut off the power supply to the equipment, stop the equipment from running, and ensure user safety.

[0045] The working process of this utility model is as follows:

[0046] When in use, insert the rechargeable lithium battery 12 into the battery compartment 11 and start the device via the touch screen 10.

[0047] Users can set parameters such as the motion mode and speed of the scrubbing mechanism 3 via the touch screen 10;

[0048] The vertical motor 36 drives the vertical slide 31 to move up and down along the guide rail 33, and the scrubbing motor 37 drives the three scrubbing wheels to rotate, scrubbing the user's body.

[0049] Meanwhile, users can adjust the water temperature and water flow status through the hot and cold water regulating valve 6 and the outlet regulating valve 5, and use the overhead shower 7 or the shower head 9 for rinsing;

[0050] The position sensing mechanism 18 and the double-safety sensing mechanism 19 ensure that the scrubbing mechanism 3 moves within a safe range, and the emergency switch 23 can quickly stop the equipment in an emergency.

[0051] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A smart body scrubber, characterized in that, The device includes a housing (1), a guide hole (2) is provided on the outer side wall of the housing (1), a scrubbing mechanism (3) that can move up and down is provided in the guide hole (2), a waterproof mechanism (4) is also provided in the guide hole (2), a water outlet regulating valve (5) and a hot and cold water regulating valve (6) are provided on both sides of the lower end of the housing (1), a top shower (7) is provided on the upper end of the housing (1), a shower bracket (8) is provided on one side of the top shower (7), and a shower head (9) is held on the shower bracket (8). A touch screen (10) and a control PCB board (101) are also provided on the housing (1) above the guide hole (2), and a battery receiving slot (11) is provided on the side wall of the housing (1), in which a removable rechargeable lithium battery (12) is placed.

2. The intelligent body scrubber according to claim 1, characterized in that, The outlet regulating valve (5) is connected to the shower head (9) and the overhead shower head (7) through the first water pipe (13) and the second water pipe (14) respectively. The hot and cold water regulating valve (6) is connected to the outlet regulating valve (5) through the third water pipe (15). The hot and cold water regulating valve (6) is also connected to the external hot water source and cold water source through the fourth water pipe (16) and the fifth water pipe (17) respectively.

3. The intelligent body scrubber according to claim 1, characterized in that, The scrubbing mechanism (3) includes a vertical slide (31), which is provided with a guide groove (32). A guide rail (33) that slides with the guide groove (32) is provided inside the housing (1). A rack (34) is provided on one side of the guide rail (33). A linear displacement gear (35) that meshes with the rack (34) is provided inside the vertical slide (31). A vertical motor (36) and a scrubbing motor (37) are provided inside the vertical slide (31). The output shaft of the vertical motor (36) is connected to a first worm (361). The first worm (361) meshes with a first gear (362). The first gear (362) is connected to the linear displacement gear (35) through a first gear set (363). The output shaft of the scrubbing motor (37) is connected to a second worm (371). The rod (371) is engaged with the second gear (372) and the third gear (373). The second gear (372) is engaged with the fourth gear (374). The center of the fourth gear (374) is connected to the first output shaft (375). The first output shaft (375) is fitted with the first scrubbing wheel (376). The third gear (373) is engaged with the fifth gear (378). The center of the fifth gear (378) is connected to the second output shaft (379). The second output shaft (379) is fitted with the second scrubbing wheel (380). The third gear (373) is connected to the sixth gear (382) through the second gear set (381). The center of the sixth gear (382) is connected to the third output shaft (383). The third output shaft (383) is fitted with the third scrubbing wheel (384).

4. The intelligent body scrubber according to claim 3, characterized in that, The waterproof mechanism (4) includes several waterproof strips (41) installed in the guide hole (2). The several waterproof strips (41) are tensioned by two sets of upper and lower guide shafts (42). The guide shafts (42) are rotatably connected in the housing (1). The several waterproof strips (41) are fixedly connected to the vertical slide (31) respectively.

5. The intelligent body scrubber according to claim 3, characterized in that, It also includes a position sensing mechanism (18) installed in the housing (1). The position sensing mechanism (18) includes a sensing PCB board (181), on which N first Hall sensors (182) are provided, and on the vertical slide (31) a first sensing magnet that senses the first Hall sensors (182).

6. The intelligent body scrubber according to claim 1, characterized in that, It also includes a double-safety sensing mechanism (19) installed at the upper and lower ends of the guide hole (2). The double-safety sensing mechanism (19) includes an upper sensing contact (191) and a lower sensing contact (192). The upper sensing contact (191) and the lower sensing contact (192) are respectively flexibly inserted into the upper sensing base (193) and the lower sensing base (194). The upper sensing base (193) and the lower sensing base (194) are respectively provided with a second Hall sensor (195). The upper sensing contact (191) and the lower sensing contact (192) are each equipped with a second sensing magnet that senses the second Hall sensor (195).

7. The intelligent body scrubber according to claim 3, characterized in that, Spring pins (20) are provided on the first output shaft (375), the second output shaft (379) and the third output shaft (383), and slots (201) matching the spring pins (20) are provided on the first bath roller (376), the second bath roller (380) and the third bath roller (384).

8. The intelligent body scrubber according to claim 3, characterized in that, The housing (1) is also provided with a guide rod (21), and a spiral wire (22) is sleeved on the outside of the guide rod (21). The vertical slide (31) is electrically connected to the control PCB board (101) through the spiral wire (22).

9. The intelligent body scrubber according to claim 1, characterized in that, An emergency switch (23) is also provided on the outside of the housing (1), and the emergency switch (23) is electrically connected to the control PCB board (101).

10. The intelligent body scrubber according to claim 4, characterized in that, There are two guide rails (33), three waterproof strips (41), and three guide holes (2). The two guide rails (33) separate the three waterproof strips (41) at intervals. The first output shaft (375), the second output shaft (379), and the third output shaft (383) can be slidably passed through the three guide holes (2), and the three waterproof strips (41) correspond one-to-one with the three guide holes (2).

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