Multi-dimensional adjustable wearable eye acupoint stimulation myopia treatment instrument
Patent Information
- Application Number
- CN202511614347.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-06
- Publication Date
- 2026-10-27
AI Technical Summary
1.刺激精准性差:多数设备采用固定针头,无法根据不同用户眼部轮廓调节针头与穴位的距离,且针头不可替换,长期使用易滋生细菌;
1.刺激精准性提升:可替换梅花针头保障卫生,距离可调机构适配不同用户眼部轮廓,确保针头精准对准穴位;
Smart Images

Figure CN122973203A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of vision correction assistive devices, and in particular to a wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment. Background Technology
[0002] With the widespread use of electronic devices and changes in eye habits, the incidence of myopia is increasing year by year, especially among teenagers. Among existing myopia treatment devices, acupoint stimulation devices are widely used due to their relatively simple operation and non-invasive nature, but they have the following shortcomings: 1. Poor stimulation precision: Most devices use fixed needles, which cannot adjust the distance between the needle and acupoint according to different users' eye contours. In addition, the needles are not replaceable, and bacteria can easily grow with long-term use. 2. Limited driving method: It relies heavily on manual operation or simple vibration, which cannot achieve rhythmic and stable acupoint stimulation, resulting in limited therapeutic effects; 3. Low wearing comfort: Most existing wearable devices have rigid frames, which do not fit the face well and can cause pressure when worn for a long time; 4. Poor environmental adaptability: Lacking an effective waterproof and dustproof structure, the internal components of the equipment are easily damaged when used outdoors or accidentally come into contact with liquids, affecting its service life. Summary of the Invention
[0003] The main objective of this invention is to provide a wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment, which can effectively solve the problems in the background art.
[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment includes an outer cover, a main silicone pad, a plum blossom needle stimulation component, an elastic restraint strap, a drive component, and a protective component; the plum blossom needle stimulation component, drive component, and protective component are all integrated on the outer cover, fixed to the user's head, and fit snugly against the face; The plum blossom needle stimulation assembly includes a plum blossom needle tip, a needle tip adjustment mechanism, a rubber gasket, and a waterproof and dustproof sealed protective cover. The plum blossom needle tip is a replaceable structure and can be detachably fixed to the needle tip adjustment mechanism via a snap-fit or threaded connection. The needle tip adjustment mechanism includes a slide rail, an adjustment knob and a locking component, and plum blossom needle massage acupoints. The adjustment knob drives the slide rail to move vertically or horizontally along the outer cover, causing the plum blossom needle tip to move closer to or away from the skin around the eye. After adjustment, the position is locked by the slide rail. The plum blossom needle tip is used to contact and stimulate preset acupoints around the eye.
[0005] Preferably, the driving assembly includes a primary motor, an eccentric wheel, a main swing arm, a connecting rod, and a secondary swing arm; the primary motor is fixed inside the outer casing, and its output shaft is coaxially and fixedly connected to the eccentric wheel; one end of the main swing arm is hinged to the edge of the eccentric wheel, and the other end is indirectly connected to the slide rail or plum blossom needle head of the plum blossom needle stimulation assembly; when the primary motor drives the eccentric wheel to rotate, the eccentric wheel drives the plum blossom needle head to reciprocate along a preset trajectory through the main swing arm, thereby realizing rhythmic tapping stimulation of acupoints around the eyes.
[0006] Preferably, the outer cover is a headband or face mask wearable structure, including a frame and a secondary silicone pad that fits the face; the secondary silicone pad is ergonomically designed, its shape is adapted to the contours of the eye socket and face, and the surface of the pad is made of a skin-friendly and non-slip material; the frame is used to support the plum blossom needle stimulation component, the driving component and the protective component, and is fixed by elastic straps or adjustable buckles.
[0007] Preferably, the protective components include a waterproof and dustproof sealing ring, a protective cover, a bracket structure, an outer protective cover, and a buckle; the waterproof and dustproof sealing ring is located at the gaps where the outer cover contacts the outside, including the frame splicing seams, the mating points of the adjustment knob and the slide rail, and the cable outlet, and is made of aging-resistant silicone material; the protective cover is a detachable transparent acrylic plate that covers the outside of the plum blossom needle tip, used to prevent rainwater and dust from directly intruding into the plum blossom needle stimulation component and the drive component when the equipment is idle or used outdoors.
[0008] Preferably, the plum blossom needle includes a needle base and several elastic needle bodies disposed at the end of the needle base, and a needle base positioning groove; the needle bodies are made of medical-grade stainless steel, and the needle tips are rounded and blunt; the needle base is provided with a positioning groove, which cooperates with the protruding structure of the needle adjustment mechanism to realize the rapid positioning and installation of the plum blossom needle.
[0009] Preferably, the drive assembly further includes a speed control module, which is electrically connected to the second motor and is used to adjust the speed of the second motor, thereby changing the swing frequency of the main swing arm driven by the eccentric wheel, and realizing multi-level adjustment of the stimulation intensity of the plum blossom needle.
[0010] Preferably, the secondary silicone pad has ventilation holes inside, which are evenly distributed around the circumference of the pad to reduce the feeling of stuffiness on the face when wearing it and improve comfort during long-term use.
[0011] Preferably, the protective cover is connected to the outer frame by magnetic attraction, and the edge of the cover is provided with a groove that matches the waterproof and dustproof sealing ring, further enhancing the waterproof and dustproof effect.
[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. Improved Stimulation Precision: Replaceable plum blossom needles ensure hygiene, and the adjustable distance mechanism adapts to different users' eye contours, ensuring that the needles are accurately aimed at acupoints; 2. Optimized treatment effect: The No. 1 motor drives the eccentric wheel main swing arm mechanism to achieve rhythmic stimulation with adjustable frequency, simulating professional acupoint massage techniques and improving the effectiveness of stimulation; 3. Improved wearing comfort: The ergonomic silicone padding and elastic band design conforms to the face and is breathable, making it suitable for long-term use; 4. Enhanced environmental adaptability: The waterproof and dustproof structure allows the equipment to be used outdoors, in bathrooms, and other similar environments, extending its service life.
[0013] This invention addresses many pain points of existing myopia treatment devices through multi-dimensional innovative design, providing an efficient, safe, and convenient auxiliary treatment solution for myopia prevention and control. Attached Figure Description
[0014] Figure 1 This is a structural diagram of the external shape of a wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment according to the present invention; Figure 2 This is a structural diagram of the external shape of a wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment according to the present invention; Figure 3 This is a schematic diagram of the rubber pad and protective cover of a wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment according to the present invention; Figure 4 This is a schematic diagram of an adjustable plum blossom needle tip for a wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment according to the present invention. Figure 5 This is a schematic diagram of the plum blossom needle massage acupoints of a wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment according to the present invention; Figure 6 This is a schematic diagram of a wearable eye acupoint stimulation myopia treatment device with adjustable plum blossom needle length, which is subject to multi-dimensional adjustment according to the present invention. Figure 7 This is a schematic diagram of the swing arm drive and motor of a wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment according to the present invention. Figure 8 This is a schematic diagram of the support structure of a wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment according to the present invention. Figure 9 This invention provides a waterproof and dustproof sealing ring for a wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment. Figure 10 This invention relates to a protective cover for a wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment. Figure 11This is a schematic diagram illustrating the wearing of a wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment according to the present invention; Figure 12 This is a schematic diagram of the outer shell material of a wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment according to the present invention; Figure 13 This is a diagram of the protective cover plate for a wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment according to the present invention; Figure 14 This invention relates to a wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment, and includes a motor and speed control module. Figure 15 This invention provides a multi-dimensional adjustable wearable eye acupoint stimulation myopia treatment device. Figure 14 Additional detailed images of the components.
[0015] In the diagram: 1-1, Outer cover; 1-2, Main silicone pad; 1-3, Plum blossom needle stimulation component; 1-4, Elastic restraint band; 2-1, Rubber plug; 2-2, Waterproof and dustproof sealing cover; 3-1, Plum blossom needle head; 3-2, Buckle; 3-3, Slide rail; 4-1, Plum blossom needle massage acupoint; 5-1, Needle head adjustment mechanism; 6-1, Main swing arm; 6-2, Motor No. 1; 7-1, Support structure; 8-1, Waterproof and dustproof sealing ring; 9-1, Outer shell protective cover; 11-1, ABS engineering plastic material; 11-2, Vent hole; 12-1, Buckle; 12-2, Transparent acrylic sheet; 12-3, Secondary silicone pad; 12-4, Needle seat positioning groove; 13-1, Motor No. 2; 13-2, Speed control module; 13-3, Eccentric wheel; 13-4, Connecting rod; 13-5, Secondary swing arm. Detailed Implementation
[0016] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.
[0017] like Figure 1-15 As shown, a wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment includes an outer cover 1-1, a main silicone pad 1-2, a plum blossom needle stimulation component 1-3, an elastic restraint band 1-4, a drive component, and a protective component; the plum blossom needle stimulation component 1-3, the drive component, and the protective component are all integrated on the outer cover 1-1, fixed to the user's head, and fit in close contact with the face; The plum blossom needle stimulation component 1-3 includes a plum blossom needle 3-1, a needle adjustment mechanism 5-1, a rubber gasket 2-1, and a waterproof and dustproof sealed protective cover 2-2. The plum blossom needle 3-1 is a replaceable structure and can be detachably fixed to the needle adjustment mechanism 5-1 by means of a snap-fit 3-2 or a threaded connection. The needle adjustment mechanism 5-1 includes a slide rail 3-3, an adjustment knob and locking mechanism, and plum blossom needle massage acupoints 4-1. The adjustment knob drives the slide rail 3-3 to move vertically or horizontally along the outer cover 1-1, causing the plum blossom needle 3-1 to move closer to or away from the skin around the eye. After adjustment, the position is locked by the slide rail 3-3. The plum blossom needle 3-1 is used to contact and stimulate preset acupoints around the eye.
[0018] In this embodiment, the driving assembly includes a primary motor 6-2, an eccentric wheel 13-3, a main swing arm 6-1, a connecting rod 13-4, and a secondary swing arm 13-5. The primary motor 6-2 is fixed inside the outer casing 1-1, and its output shaft is coaxially and rigidly connected to the eccentric wheel 13-3. One end of the main swing arm 6-1 is hinged to the edge of the eccentric wheel 13-3, and the other end is indirectly connected to the slide rail 3-3 or the plum blossom needle 3-1 of the plum blossom needle stimulation assembly 1-3. When the primary motor 6-2 drives the eccentric wheel 13-3 to rotate, the eccentric wheel 13-3 drives the plum blossom needle 3-1 to reciprocate along a preset trajectory through the main swing arm 6-1, thereby achieving stimulation of the eye. The rhythmic tapping stimulation of acupoints is driven by a drive assembly including a primary motor 6-2, an eccentric wheel 13-3, a main swing arm 6-1, a connecting rod 13-4, and a secondary swing arm 13-5. The primary motor 6-2 is fixed inside the outer casing 1-1, and its output shaft is coaxially connected to the eccentric wheel 13-3. One end of the main swing arm 6-1 is hinged to the edge of the eccentric wheel 13-3, and the other end is indirectly connected to the slide rail 3-3 or the plum blossom needle tip 3-1 of the plum blossom needle stimulation assembly 1-3. When the primary motor 6-2 drives the eccentric wheel 13-3 to rotate, the eccentric wheel 13-3 drives the plum blossom needle tip 3-1 to reciprocate along a preset trajectory via the main swing arm 6-1. The rhythmic tapping stimulation of acupoints around the eyes is achieved using an outer cover 1-1 that is a headband or face mask-style wearable structure, including a frame and a secondary silicone pad 12-3 that conforms to the face. The secondary silicone pad 12-3 is ergonomically designed, its shape conforming to the contours of the eye socket and face, and its surface is made of a skin-friendly, non-slip material. The frame supports the plum blossom needle stimulation component 1-3, the drive component, and the protective component, and is secured by an elastic strap or adjustable buckle 3-2. The protective component includes a waterproof and dustproof sealing ring 8-1, a protective cover, a support structure 7-1, an outer protective cover 9-1, and a buckle 12-1. The water and dustproof sealing ring 8-1 is installed at the gaps between the outer cover 1-1 and the outside, including the frame splicing seam, the mating point between the adjustment knob and the slide rail 3-3, and the cable outlet, and is made of aging-resistant silicone material; the protective cover is a detachable transparent acrylic plate 12-2, which covers the outside of the plum blossom needle 3-1, and is used to prevent rainwater and dust from directly entering the plum blossom needle stimulation component 1-3 and the drive component when the equipment is idle or used outdoors. The plum blossom needle 3-1 includes a needle seat and several elastic needles set at the end of the needle seat, and a needle seat positioning groove 12-4; the needle body is made of medical-grade stainless steel, and the needle tip has a rounded blunt tip structure;The needle holder has a positioning groove that cooperates with the protruding structure of the needle adjustment mechanism 5-1 to achieve quick positioning and installation of the plum blossom needle 3-1. The drive assembly also includes a speed adjustment module 13-2, which is electrically connected to the second motor 13-1 to adjust the speed of the second motor 13-1, thereby changing the swing frequency of the eccentric wheel 13-3 driving the main swing arm 6-1, achieving multi-level adjustment of the plum blossom needle stimulation intensity. The secondary silicone soft pad 12-3 has ventilation holes 11-2 inside, which are evenly distributed around the circumference of the soft pad to reduce facial stuffiness during wear and improve comfort during long-term use. The protective cover is connected to the outer cover 1-1 frame by magnetic attraction, and the edge of the cover has a groove that matches the waterproof and dustproof sealing ring 8-1 to further enhance the waterproof and dustproof effect.
[0019] Specifically, when installing a new needle, the positioning groove 12-4 of the needle seat engages with the protrusion of the slide rail 3-3 for quick positioning. The needle body is made of medical-grade stainless steel with a rounded tip to avoid scratching the skin and can be replaced periodically to ensure hygiene. The adjustable plum blossom needle 3-1: The needle adjustment mechanism 5-1 is connected to the slide rail 3-3 via gear meshing. When the knob is rotated clockwise, the slide rail moves the plum blossom needle 3-1 closer to the eye; counterclockwise rotation moves it away. The adjustment range is 0-10mm. After adjustment, the needle position remains unchanged during stimulation. The main swing arm 6-1 is driven by a 12V DC reduction motor 6-2, with its output shaft fixed to the eccentric wheel 13-3. One end of the main swing arm 6-1 is connected via... The bearing is connected to the eccentric wheel 13-3 at one end, and the other end is connected to the connecting rod 13-4. After the No. 1 motor is started, the eccentric wheel 13-3 rotates and drives the main swing arm 6-1 to swing back and forth, so that the plum blossom needle taps the acupoints around the eyes at a frequency of 1-5 times / second to achieve rhythmic stimulation. The speed adjustment module 13-2 adjusts the speed by changing the input voltage of the No. 1 motor to meet the needs of different users for stimulation intensity. The outer cover 1-1 frame is made of ABS engineering plastic material 11-1, which is lightweight and strong. The elastic restraint belt 1-4 is made of nylon material, and its length can be adjusted by buckle 12-1. The secondary silicone soft pad 12-3 is made of food-grade silicone material and is designed by 3D scanning of human facial contours to fit closely around the eye sockets, cheekbones and below the forehead.
[0020] Working principle: In use, this myopia treatment device mainly includes a wearable main body, a plum blossom needle stimulation component, a drive component, and a protective component. All components are integrated onto the wearable main body, forming a head-mounted integrated structure. The replaceable plum blossom needle 3-1 is fixed to the slide rail 3-3 of the needle adjustment mechanism 5-1 using a snap-on connection 3-2. To replace it, simply press the snap to remove the old needle. When installing a new needle, the needle seat positioning groove 12-4 engages with the protrusion of the slide rail 3-3 for quick positioning. The needle body is made of medical-grade stainless steel with a rounded tip to avoid skin scratches. It can be replaced periodically to ensure hygiene. Adjustable plum blossom needle 3-1: The needle adjustment mechanism 5-1 is connected to the slide rail 3-3 via gear meshing. When the knob is rotated clockwise, the slide rail 3-3 moves the plum blossom needle 3-1 closer to the eye, and counterclockwise it moves away. The adjustment range is 0-10mm. After adjustment, ensure that the needle position remains unchanged during stimulation. The main swing arm 6-1 driven by the first motor: A 12V DC reduction motor 6-2 is used, with its output shaft fixedly connected to the eccentric wheel 13-3. One end of the main swing arm 6-1 is connected to the eccentric wheel 13-3 via a bearing, and the other end is connected via a connecting rod 13-4. After the first motor starts, the eccentric wheel 13-3... The rotation drives the main swing arm 6-1 to reciprocate, causing the plum blossom needle to tap acupoints around the eyes at a frequency of 1-5 times / second, achieving rhythmic stimulation. The speed control module 13-2 adjusts the speed by changing the input voltage of motor 1 to meet the stimulation intensity needs of different users. The outer frame 1-1 is made of ABS engineering plastic 11-1, which is lightweight and strong. The elastic restraint strap 1-4 is made of nylon, and its length can be adjusted by buckle 12-1. The secondary silicone pad 12-3 is made of food-grade silicone and is designed based on 3D scanning of the human facial contour, fitting closely to the area around the eye sockets, cheekbones, and below the forehead. The pad is thick. The thickness is 5-8mm, and there are 1mm diameter ventilation holes 11-2 inside to reduce the stuffiness when wearing. There is no obvious pressure when wearing for a long time. Waterproof and dustproof sealing ring 8-1: It is set at the frame splicing seam, the mating of the adjustment knob and the slide rail, and the No. 1 motor outlet hole. It is wrapped with rubber gasket 2-1. The sealing ring has a U-shaped cross section and fits tightly with the gap. Protective cover: Transparent acrylic plate 12-2 is connected to the frame 11 by magnetic attraction. When not in use, it covers the outside of the plum blossom needle 3-1 to prevent dust accumulation. When used outdoors, it can effectively prevent rainwater from splashing into the device and ensure the stability of the drive component and the stimulation component.
[0021] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.
Claims
1. A wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment, characterized in that: It includes an outer cover (1-1), a main silicone pad (1-2), a plum blossom needle stimulation component (1-3), an elastic restraint band (1-4), a drive component, and a protective component; the plum blossom needle stimulation component (1-3), the drive component, and the protective component are all integrated on the outer cover (1-1), fixed to the user's head, and fit against the face; The plum blossom needle stimulation component (1-3) includes a plum blossom needle (3-1), a needle adjustment mechanism (5-1), a rubber gasket (2-1), and a waterproof and dustproof sealed protective cover (2-2). The plum blossom needle (3-1) is a replaceable structure and can be detachably fixed to the needle adjustment mechanism (5-1) by means of a buckle (3-2) or a threaded connection. The needle adjustment mechanism (5-1) includes a slide rail (3-3), an adjustment knob and a locking component, and plum blossom needle massage acupoints (4-1). The adjustment knob drives the slide rail (3-3) to move vertically or horizontally along the outer cover (1-1), causing the plum blossom needle (3-1) to move closer to or away from the skin around the eye. After adjustment, the position is locked by the slide rail (3-3). The plum blossom needle (3-1) is used to contact and stimulate preset acupoints around the eye.
2. The wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment according to claim 1, characterized in that: The drive assembly includes a primary motor (6-2), an eccentric wheel (13-3), a main swing arm (6-1), a connecting rod (13-4), and a secondary swing arm (13-5). The primary motor (6-2) is fixed inside the outer casing (1-1), and its output shaft is coaxially fixed to the eccentric wheel (13-3). One end of the main swing arm (6-1) is hinged to the edge of the eccentric wheel (13-3), and the other end is indirectly connected to the slide rail (3-3) or the plum blossom needle head (3-1) of the plum blossom needle stimulation assembly (1-3). When the primary motor (6-2) drives the eccentric wheel (13-3) to rotate, the eccentric wheel (13-3) drives the plum blossom needle head (3-1) to reciprocate along a preset trajectory through the main swing arm (6-1), thereby realizing rhythmic tapping stimulation of acupoints around the eyes.
3. The wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment according to claim 2, characterized in that: The outer cover (1-1) is a headband or face mask wearable structure, including a frame and a secondary silicone pad (12-3) that fits the face; the secondary silicone pad (12-3) is ergonomically designed, its shape is adapted to the contours of the human eye socket and face, and the surface of the pad is made of skin-friendly and non-slip material; the frame is used to support the plum blossom needle stimulation component (1-3), the driving component and the protective component, and is fixed by elastic straps or adjustable buckles (3-2).
4. The wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment according to claim 3, characterized in that: The protective components include a waterproof and dustproof sealing ring (8-1), a protective cover, a bracket structure (7-1), an outer protective cover (9-1), and a buckle (12-1). The waterproof and dustproof sealing ring (8-1) is located at the gaps between the outer cover (1-1) and the outside, including the frame splicing seams, the mating points of the adjustment knob and the slide rail (3-3), and the cable outlet, and is made of aging-resistant silicone material. The protective cover is a detachable transparent acrylic plate (12-2) that covers the outside of the plum blossom needle (3-1) and is used to prevent rainwater and dust from directly intruding into the plum blossom needle stimulation component (1-3) and the drive component when the equipment is idle or used outdoors.
5. The wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment according to claim 4, characterized in that: The plum blossom needle (3-1) includes a needle seat and several elastic needle bodies disposed at the end of the needle seat, and a needle seat positioning groove (12-4); the needle bodies are made of medical grade stainless steel and the needle tips are rounded and blunt; the needle seat is provided with a positioning groove, which cooperates with the protruding structure of the needle adjustment mechanism (5-1) to realize the quick positioning and installation of the plum blossom needle (3-1).
6. The wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment according to claim 5, characterized in that: The drive assembly also includes a speed control module (13-2), which is electrically connected to the second motor (13-1) and is used to adjust the speed of the second motor (13-1), thereby changing the swing frequency of the main swing arm (6-1) driven by the eccentric wheel (13-3) to achieve multi-level adjustment of the intensity of the plum blossom needle stimulation.
7. A wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment according to claim 6, characterized in that: The secondary silicone pad (12-3) has ventilation holes (11-2) inside. The ventilation holes (11-2) are evenly distributed along the circumference of the pad to reduce the feeling of stuffiness on the face when wearing it and improve the comfort of long-term use.
8. A wearable eye acupoint stimulation myopia treatment device with multi-dimensional adjustment according to claim 7, characterized in that: The protective cover is connected to the outer cover (1-1) frame by magnetic attraction. The edge of the cover is provided with a groove that matches the waterproof and dustproof sealing ring (8-1) to further enhance the waterproof and dustproof effect.