Multi-operation-head beauty equipment with fat burning effect on fat at multiple positions

Abstract

The invention discloses multi-operation-head beauty equipment with a fat burning effect aiming at multiple fats, and particularly relates to the technical field of beauty equipment, the multi-operation-head beauty equipment comprises a beauty instrument device, an ultrasonic fat burning head, a negative pressure fat burning head, an infrared light fat burning head, a micro-current fat burning head and a telescopic assembly, the telescopic assembly is connected to the bottom of the beauty instrument device, and the telescopic assembly is connected to the bottom of the beauty instrument device. The length of the beauty instrument device is adjusted; the multiple operation heads are matched with multiple parts, precise and efficient fat burning is achieved, the ultrasonic fat burning heads are specially designed for thick fat layers of the waist and the abdomen, and fat cell structures are destroyed through the cavitation effect, the mechanical effect and the heat effect; the negative-pressure fat burning head is used for lifting subcutaneous fat tissues by moderate negative pressure aiming at delicate facial skin; the infrared light fat burning head meets the fat burning requirement of the arm, so that the infrared light completely and uniformly covers the arm; the micro-current fat burning head can assist each part, stimulate muscle contraction and promote lipolysis; by means of the precise design, the operation heads can play a role according to fat characteristics of different parts, and diversified beauty requirements of users are met.

Description

Technical Field

[0001] This invention relates to the field of beauty equipment technology, and more specifically, to a multi-head beauty device that has a fat-burning effect on multiple fat deposits. Background Technology

[0002] As people's living standards improve and their pursuit of beauty increases, the demand for beauty and body shaping is constantly growing. Traditional beauty and body shaping methods, such as exercise for weight loss, require long-term adherence and the effects may not be obvious; drug-based weight loss may have side effects and pose a potential threat to health; and surgical weight loss has high risks and a long recovery period.

[0003] In the field of beauty and weight loss, there are currently some beauty and fat-burning devices on the market. Their working principle integrates multiple technologies and uses different physical mechanisms to achieve the dual effects of beauty and weight loss. For example, high-frequency vibration technology can use high-frequency vibration to stimulate skin cells, thereby promoting blood circulation and metabolism; ultrasound technology can use the cavitation effect and other characteristics of ultrasound to achieve deep skin cleansing and help the absorption of nutrients; and radio frequency technology emits radio frequency current to heat the skin tissue, thereby stimulating collagen contraction and regeneration.

[0004] In the field of beauty devices and slimming devices, although some beauty devices with fat-burning functions already exist on the market, most of them have only one function and cannot accurately and effectively deal with the fat characteristics of different parts of the body. For example, some devices only use a single ultrasonic or infrared light technology, which lacks specificity for the thickness and distribution differences of fat layers in different parts of the body, resulting in unsatisfactory fat-burning effects. Moreover, existing beauty devices also have shortcomings in terms of ease of use. The length of the device is fixed and cannot be flexibly adjusted according to the user's position and needs, which affects the user's operating experience. To address this, we propose a multi-head beauty device that can burn fat in multiple areas. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a multi-head beauty device that has a fat-burning effect on multiple fat deposits, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-head beauty device that has a fat-burning effect on multiple fat deposits, comprising a beauty instrument device, an ultrasonic fat-burning head, a negative pressure fat-burning head, an infrared fat-burning head, and a microcurrent fat-burning head. The telescopic component is attached to the bottom of the beauty device and is used to adjust the length of the beauty device.

[0007] Preferably, the bottom of the beauty device has an internal thread, and the telescopic component includes a connecting cylinder connected to the bottom of the beauty device, with an external thread on the top of the connecting cylinder.

[0008] Preferably, the external thread is connected inside the internal thread, and two symmetrical fixed cylinders are installed inside the connecting cylinder, with a spring installed inside each of the two fixed cylinders.

[0009] Preferably, one end of the spring is equipped with a telescopic rod, which is located inside the fixed cylinder, and one end of both telescopic rods is equipped with a connecting seat.

[0010] Preferably, a slide rod is installed on the top of the connecting seat, and the connecting seat is located inside the connecting cylinder.

[0011] Preferably, several sets of equally spaced limiting inclined plates are installed on both sides of the slide rod, and two symmetrical fixed seats are installed inside the connecting cylinder, with a magnet installed on one side of the inside of the fixed seat.

[0012] Preferably, the fixing base and the magnet are connected by a connecting rod inside, one end of the connecting rod passes through and extends to the outside of the fixing base to install a pull plate, and the other end of the connecting rod is installed with a connecting plate.

[0013] Preferably, the connecting plate is located inside the fixed base, a positioning inclined plate is installed at one end of the connecting plate, and a spring is installed on one side of the connecting plate and outside the connecting rod.

[0014] Preferably, one end of the second spring is connected to the magnet, the connecting plate is made of iron, and a handle is installed on the outside of the connecting cylinder.

[0015] The technical effects and advantages of this invention are as follows: This invention features multiple operating heads adapted to various body parts for precise and efficient fat burning: the beauty device is equipped with ultrasonic fat burning heads, negative pressure fat burning heads, infrared light fat burning heads, and microcurrent fat burning heads, specifically designed for different areas such as the waist, abdomen, face, and arms. For example, the ultrasonic fat burning head is designed for the thicker fat layer in the waist and abdomen, destroying fat cell structure through cavitation, mechanical, and thermal effects; the negative pressure fat burning head is designed for the delicate skin of the face, where negative pressure not only moderately improves facial smoothness but also allows for complete fat burning, resulting in a lifting and firming effect on the collagen and elastic fiber network surrounding the shrunken fat tissue; the infrared light fat burning head meets the fat burning needs of the arms, ensuring comprehensive and even coverage of the arms with infrared light; the microcurrent fat burning head can be used in conjunction with other areas to stimulate fat decomposition and muscle contraction, preventing sagging and hollowing of the skin after fat burning, and achieving firmness of fat, muscles, and skin. This comprehensive design, which is both broad in scope and precise in targeting, effectively improves fat burning efficiency and meets the diverse beauty needs of users.

[0016] This invention allows for flexible adjustment of the device length and is easy to operate: the beauty device is connected to a telescopic assembly, which connects to the internal thread at the bottom of the beauty device via the external thread at the top of the connecting cylinder. The telescopic assembly contains a spring, a telescopic rod, a sliding rod, a limiting inclined plate, and a positioning inclined plate, which, together with the pull plate, connecting rod, connecting plate, and spring two, enable flexible adjustment of the device length. The user pulls the pull plate to release the limiting of the sliding rod, and then pushes or pulls the beauty device by holding the handle to adjust the length. After reaching the appropriate position, the user pushes the pull plate to re-limit and fix the device. This design allows users to easily adjust the device length according to their usage location and needs, and its simple operation enhances the user experience. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a semi-exploded view of the structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the telescopic component of the present invention.

[0020] Figure 4 This is a first-view internal view of the telescopic component of the present invention.

[0021] Figure 5 For the present invention Figure 4 A magnified view of A in the middle.

[0022] Figure 6 This is a second-view internal view of the telescopic component of the present invention.

[0023] The attached diagram is labeled as follows: 1. Beauty device; 2. Ultrasonic fat-burning head; 3. Negative pressure fat-burning head; 4. Infrared light fat-burning head; 5. Microcurrent fat-burning head; 6. Telescopic component; 7. Internal thread; 61. Connecting cylinder; 62. External thread; 63. Fixing cylinder; 64. Spring one; 65. Telescopic rod; 66. Connecting seat; 67. Slide rod; 68. Limiting inclined plate; 69. Fixing seat; 610. Magnet; 611. Connecting rod; 612. Pull plate; 613. Connecting plate; 614. Positioning inclined plate; 615. Spring two; 616. Handle. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] As attached Figures 1-6The multi-head beauty device shown is designed to burn fat in multiple areas, including a beauty instrument 1, an ultrasonic fat-burning head 2, a negative pressure fat-burning head 3, an infrared fat-burning head 4, and a microcurrent fat-burning head 5. Telescopic component 6 is connected to the bottom of the beauty device 1 and is used to adjust the length of the beauty device 1. The bottom of the beauty device 1 has an internal thread 7. The telescopic component 6 includes a connecting cylinder 61 connected to the bottom of the beauty device 1. The top of the connecting cylinder 61 has an external thread 62, which connects to the inside of the internal thread 7. Two symmetrical fixed cylinders 63 are installed inside the connecting cylinder 61. A spring 64 is installed inside each of the two fixed cylinders 63. A telescopic rod 65 is installed at one end of the spring 64. The telescopic rod 65 is located inside the fixed cylinder 63. A connecting seat 66 is installed at one end of both telescopic rods 65. A sliding rod 67 is installed on the top of the connecting seat 66. The connecting seat 66 is located inside the connecting cylinder 61. Several sets of equally spaced limiting inclined plates 68 are installed on both sides of the sliding rod 67. The internal part of the 1 has two symmetrical fixed seats 69. A magnet 610 is installed on one side of the internal part of the fixed seat 69. The fixed seat 69 and the magnet 610 are connected to a connecting rod 611. One end of the connecting rod 611 passes through and extends to the outside of the fixed seat 69 and is equipped with a pull plate 612. The other end of the connecting rod 611 is equipped with a connecting plate 613. The connecting plate 613 is located inside the fixed seat 69. One end of the connecting plate 613 is equipped with a positioning inclined plate 614. A second spring 615 is installed on one side of the connecting plate 613 and outside the connecting rod 611. One end of the second spring 615 is connected to the magnet 610. The connecting plate 613 is made of iron. A handle 616 is installed on the outside of the connecting cylinder 61. The beauty device 1 is threadedly connected to the ultrasonic fat-burning head 2, the negative pressure fat-burning head 3, the infrared fat-burning head 4, and the microcurrent fat-burning head 5. The beauty device 1 operates using the principle of ultrasonic technology. As the core hub of the entire multi-operation head beauty device, the beauty device 1 undertakes the important task of connecting and coordinating the various functional fat-burning operation heads corresponding to the waist, abdomen, face, and arms. It has the overall control center function, including a power management module, a main control circuit board, a display screen, and operation buttons. The display screen is used to show information such as working status, mode, and time. The operation buttons facilitate users to switch modes and adjust parameters. The power management module is responsible for the reasonable allocation of power to ensure the stable operation of each operation head. Working Principle: After turning on the device, the user selects a fat-burning mode suitable for specific areas such as the waist, abdomen, face, or arms from a variety of preset beauty modes using the operation buttons. The main control circuit board quickly receives the command and, based on the selected mode and the type of operating head, precisely coordinates the power management module to provide appropriate power to the corresponding operating head. At the same time, it regulates signal transmission to ensure that each operating head operates in an orderly manner according to the preset program. During the operation of the device, the safety protection module continuously monitors the working status of each operating head in real time. Once an abnormality is detected, such as excessive current or excessive temperature, the protection mechanism is immediately triggered to automatically cut off the power supply, preventing damage to the device and harm to the user, thus comprehensively ensuring safety and stable results. The beauty device 1 and the telescopic assembly 6 are connected together by the external thread 62 at the top of the connecting cylinder 61 and the internal thread 7 at the bottom of the beauty device 1. At this time, the telescopic rod 65 is in a state of extending a certain length relative to the fixed cylinder 63 under the action of the first spring 64. The connecting seat 66 and the slide rod 67 are located in the corresponding positions inside the connecting cylinder 61. The positioning inclined plate 614 cooperates with the limiting inclined plate 68 under the action of the second spring 615 to play a certain limiting and fixing role on the slide rod 67, so that the entire telescopic assembly 6 maintains a certain length.

[0026] The working principle of this invention is as follows: In the initial state, the positioning inclined plate 614 is located at the lowest limiting inclined plate 68, most of the telescopic rod 65 is located inside the fixed cylinder 63, the first spring 64 is in a compressed state, and the entire telescopic assembly 6 is in its shortest state. At the same time, under the action of the second spring 615, the positioning inclined plate 614 cooperates with the lowest limiting inclined plate 68 to limit and fix the sliding rod 67, so that the entire telescopic assembly 6 maintains a stable shortest length state. When the length of the beauty device 1 needs to be adjusted, pull the pull plate 612 by hand. The pull plate 612 drives the connecting rod 611 to move outward. The connecting rod 611 then drives the connecting plate 613 to move. Since the connecting plate 613 is made of iron, it will gradually approach the magnet 610 during the movement. When the connecting plate 613 and the magnet 610 are attracted, the positioning inclined plate 614 is completely located in the fixed seat 69. At this time, the positioning inclined plate 614 is separated from the limiting inclined plate 68, and the limiting fixation of the slide rod 67 is released. Next, hold the handle 616 and push or pull the beauty device 1 up or down according to the required length. The beauty device 1 drives the connecting cylinder 61 to move, and the connecting seat 66 inside the connecting cylinder 61 drives the slide rod 67 to move. At the same time, the telescopic rod 65 slides in the fixed cylinder 63, and the spring 64 is further compressed or extended accordingly, moving the connecting cylinder 61 to the appropriate position. After reaching the appropriate position, push the pull plate 612 forward. The pull plate 612 drives the connecting rod 611 and the connecting plate 613 to move, so that the connecting plate 613 is disengaged from the magnet 610. At this time, the spring 615 releases its elastic force, pushing the connecting plate 613 to move towards the slide rod 67. The connecting plate 613 drives the positioning inclined plate 614 to move. The positioning inclined plate 614 re-cooperates with the corresponding limiting inclined plate 68 to limit and fix the slide rod 67, so that the telescopic component 6 is kept in the adjusted length state, and the length adjustment of the beauty device 1 is completed. When the length needs to be shortened, simply move the connecting cylinder 61 downwards. When the positioning inclined plate 614 contacts the inclined surface of the limiting inclined plate 68, the positioning inclined plate 614 is positioned inside the fixed seat 69 by the setting of the second spring 615. When the positioning inclined plate 614 is at the bottom of the limiting inclined plate 68, the second spring 615 drives the positioning inclined plate 614 to spring back to its original position. At this time, the positioning inclined plate 614 is at the bottom of the limiting inclined plate 68. Then, the connecting cylinder 61 and the connecting seat 66 are positioned by the setting of the first spring 64. The length can be adjusted according to the position used by the user. When the telescopic component 6 is not needed, it can be disassembled separately. The Ultrasonic Fat Burning Head 2 is specifically designed for the waist and abdomen area. It consists primarily of a high-power ultrasonic generator, a high-efficiency transducer, a wide-face contact head, and a robust and durable outer shell. The high-power ultrasonic generator produces specific high-frequency electrical signals to meet the needs of treating thicker layers of fat in the waist and abdomen. The high-efficiency transducer has high conversion efficiency, quickly converting electrical signals into powerful high-frequency ultrasonic mechanical vibrations. The wide-face contact head is made of soft and skin-friendly material, ensuring comfort when in contact with the skin of the waist and abdomen, and achieving good ultrasonic wave conduction, allowing ultrasonic energy to be evenly applied to large areas of fat in the waist and abdomen. The outer shell is specially designed to be ergonomic, easy for users to hold and operate, and effectively protects the internal precision components.

[0027] Working Principle: When the ultrasonic fat-burning head 2 is activated and applied to the waist and abdomen, the high-power ultrasonic generator begins to work, generating high-frequency electrical signals and transmitting them to the high-efficiency transducer. The transducer quickly converts the electrical signals into high-frequency ultrasonic vibrations. These vibrations are transmitted to the surface of the waist and abdomen skin and the deep subcutaneous fat layer through the wide-face contact head. The ultrasonic waves generate cavitation, mechanical, and thermal effects in the fat layer. When the microbubbles generated by the cavitation effect burst, they release enormous energy, destroying the structure of fat cells. The mechanical effect physically squeezes and rubs the fat cells through high-frequency vibrations, further accelerating the decomposition of fat cells. The thermal effect raises the temperature of the fat cells, causing the triglycerides inside the fat cells to decompose into free fatty acids and glycerol. These decomposition products are metabolized and excreted from the body through the lymphatic system and blood circulation, thereby achieving the effect of effectively burning waist and abdominal fat. At the same time, the ultrasonic vibrations can also promote local blood circulation in the waist and abdomen, enhance skin metabolism, improve skin texture, and make the skin of the waist and abdomen firmer and smoother.

[0028] The negative pressure fat-burning head 3 is specially designed for facial structure: It is meticulously designed for the delicate facial skin and thinner fat distribution. It includes a miniature negative pressure generator, a compact and exquisite suction head, a soft sealing ring, and a precision control valve. The miniature negative pressure generator produces moderate and stable negative pressure, ensuring that the skin is not excessively stretched during facial treatment. The soft sealing ring is made of medical-grade silicone, which is soft and elastic, conforming closely to the facial skin to create a good seal, preventing air leakage and avoiding friction damage. The precision control valve allows users to fine-tune the negative pressure according to the sensitivity and fat thickness of different areas of the face, achieving a personalized fat-burning experience.

[0029] Working Principle: After turning on the negative pressure fat-burning head 3 and gently placing it on the corresponding area of ​​the face, the micro negative pressure generator activates, creating a negative pressure environment inside the suction head through the tube. Under the action of negative pressure, the facial skin is gently drawn into the suction head, while subcutaneous fat tissue is lifted upwards. This mechanical lifting and squeezing action promotes the metabolism and decomposition of facial fat cells, accelerating fat burning. Because facial skin is relatively sensitive, the negative pressure can be precisely adjusted through the fine control valve to ensure that while achieving the fat-burning effect, excessive negative pressure will not cause facial skin damage or bruising. The negative pressure operation can also stimulate the production of facial collagen, enhance skin elasticity, improve facial contours, and make the skin firmer and more radiant.

[0030] The Infrared Fat Burning Head 4 is specifically designed for the arms: It is tailored to meet the fat-burning needs of the arm area, consisting of a high-intensity infrared light emitter, a professional optical lens, a high-efficiency heat dissipation device, and an ergonomically designed shell. The high-intensity infrared light emitter emits infrared light of a specific wavelength, which has a high absorption rate for arm fat cells, effectively improving fat-burning efficiency. The professional optical lens is carefully designed and adjusted to precisely focus the infrared light and evenly adjust the irradiation range and intensity, ensuring that the infrared light can comprehensively and evenly cover all parts of the arm, whether upper or lower arm, receiving sufficient irradiation. The shell's shape is designed for easy handholding and operation, providing comprehensive fat-burning care for the arms.

[0031] Working Principle: When the infrared fat-burning head 4 is turned on and aimed at the arm area, the high-intensity infrared light emitter emits infrared light of a specific wavelength. After being focused and adjusted by a professional optical lens, it evenly irradiates the skin surface and subcutaneous tissue of the arm. Infrared light has deep penetrating power, reaching deep into the subcutaneous fat layer of the arm. After being absorbed in large quantities by fat cells, it is converted into heat energy, causing the temperature of the fat cells to rise rapidly. This temperature increase accelerates the decomposition and metabolism of fat within the fat cells, promoting the breakdown of triglycerides into free fatty acids and glycerol. These decomposition products are transported to other parts of the body through the lymphatic system and blood circulation for metabolism and excretion, thereby achieving the purpose of burning arm fat. Simultaneously, the thermal effect of the infrared light also promotes local blood circulation in the arm, enhances skin metabolism, improves skin texture, and makes the arm skin firmer and healthier.

[0032] The microcurrent fat-burning head is universal and can be configured to assist in the application of microcurrents to various areas. It mainly includes a high-precision microcurrent generator, soft and comfortable electrode pads, a conductive gel application area, and a portable housing. The high-precision microcurrent generator produces precise microcurrents at the microampere level, ensuring moderate current intensity that effectively stimulates muscle contraction without causing irritation or discomfort to the skin. The soft and comfortable electrode pads are made of high-quality conductive materials with a smooth surface, providing excellent conductivity when in contact with the skin while ensuring comfort during use. The conductive gel application area is specially designed; users can evenly apply conductive gel to this area before operation to reduce the resistance between the skin and the electrode pads, significantly improving current conduction and allowing the microcurrent to act more smoothly on the skin.

[0033] Working Principle: When the user applies the microcurrent fat-burning head 5 to areas such as the waist, abdomen, face, or arms, the high-precision microcurrent generator produces a microcurrent at the microampere level, which is conducted to the skin through electrode pads and conductive gel. When the microcurrent acts on the skin, it can precisely stimulate muscle contraction, simulating the body's natural muscle movement patterns, increasing muscle tension and vitality. During the continuous contraction and relaxation of muscles, a large amount of energy is consumed, prompting fat cells to break down for energy, thereby achieving an auxiliary fat-burning effect. Whether targeting fat in the waist, abdomen, face, or arms, the microcurrent can play a role. Simultaneously, the microcurrent can also promote skin cell metabolism, enhance cell activity, accelerate collagen synthesis, improve skin elasticity and radiance, making the skin firmer and healthier, further enhancing the overall beauty effect.

[0034] Finally, the following points should be noted: First, in the description of this invention, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can refer to mechanical connection or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the object being described changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other. In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-head beauty device that has a fat-burning effect on multiple fat deposits, comprising a beauty instrument (1), an ultrasonic fat-burning head (2), a negative pressure fat-burning head (3), an infrared fat-burning head (4), and a microcurrent fat-burning head (5), characterized in that: Telescopic component (6), which is connected to the bottom of the beauty device (1) and is used to adjust the length of the beauty device (1).

2. The multi-head beauty device with fat-burning effect on multiple fat deposits according to claim 1, characterized in that: The bottom of the beauty device (1) is provided with an internal thread (7), and the telescopic component (6) includes a connecting cylinder (61) connected to the bottom of the beauty device (1), and the top of the connecting cylinder (61) is provided with an external thread (62).

3. The multi-head beauty device with fat-burning effect on multiple fat deposits according to claim 2, characterized in that: The external thread (62) is connected inside the internal thread (7), and two symmetrical fixed cylinders (63) are installed inside the connecting cylinder (61), and springs (64) are installed inside both fixed cylinders (63).

4. The multi-head beauty device with fat-burning effect on multiple fat deposits as described in claim 3, characterized in that: One end of the spring (64) is equipped with a telescopic rod (65), which is located inside the fixed cylinder (63). One end of the two telescopic rods (65) is equipped with a connecting seat (66).

5. A multi-head beauty device with fat-burning effect on multiple fat deposits as described in claim 4, characterized in that: A slide rod (67) is mounted on the top of the connecting seat (66), and the connecting seat (66) is located inside the connecting cylinder (61).

6. The multi-head beauty device with fat-burning effect on multiple fat deposits according to claim 5, characterized in that: The slide bar (67) has several sets of equally spaced limiting inclined plates (68) installed on both sides. The connecting cylinder (61) has two symmetrical fixed seats (69) installed inside. A magnet (610) is installed on one side of the inside of the fixed seat (69).

7. A multi-head beauty device with fat-burning effect on multiple fat deposits as described in claim 6, characterized in that: The fixing base (69) and the magnet (610) are connected by a connecting rod (611). One end of the connecting rod (611) extends through and to the outside of the fixing base (69) where a pull plate (612) is installed. The other end of the connecting rod (611) is equipped with a connecting plate (613).

8. A multi-head beauty device with fat-burning effect on multiple fat deposits as described in claim 7, characterized in that: The connecting plate (613) is located inside the fixed base (69). A positioning inclined plate (614) is installed at one end of the connecting plate (613). A spring (615) is installed on one side of the connecting plate (613) and outside the connecting rod (611).

9. A multi-head beauty device with fat-burning effect on multiple fat deposits as described in claim 8, characterized in that: One end of the second spring (615) is connected to the magnet (610), the connecting plate (613) is made of iron, and a handle (616) is installed on the outside of the connecting cylinder (61).

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