A shaver

Abstract

The present application provides a kind of razor, including body, head structure, swing structure and dust cover, head structure includes head shell and multiple round head;The body includes casing, swing structure includes gear frame connected with head shell and head fixed frame connected with casing, head fixed frame is floatingly connected with gear frame, gear frame is equipped with first limiting part, head fixed frame is equipped with second limiting part;When under external force, first limiting part can be moved relative to second limiting part to realize that head shell is swung relative to casing, so that round head is shaved in the process of swing activity, when there is no external force, first limiting part and second limiting part are mutually close and fit in the rotation direction of motor shaft of drive motor, so that head shell does not occur relative to casing in the rotation direction of motor shaft in the starting moment of drive motor, guarantee the stability of round head, avoid the rotation of head shell in the rotation direction of motor shaft and the situation of running away.

Description

Technical Field

[0001] This invention relates to the field of hair trimmer technology, and more specifically, to a razor. Background Technology

[0002] Shavers with multiple round blades on the head typically have a swingable head design to shave hairs from various angles. A dust cover is usually installed on the outside of the swinging part to prevent dust from entering the shaver. The dust cover can elastically deform as the head rotates relative to the body. However, in existing shavers of this type, the head rotates and wobbles relative to the body in the direction of the motor shaft rotation at the moment the drive motor starts working. This is similar to the head shaking during startup, which affects the user experience. Summary of the Invention

[0003] To address at least one of the aforementioned problems, the present invention provides a shaver comprising a body, a shaver head structure, a swivel structure connected between the body and the shaver head structure, and a dust cover. The shaver head structure includes a shaver head housing and a plurality of circular shaver heads mounted on the shaver head housing. The body includes a casing, and the upper and lower ends of the dust cover are respectively connected to the shaver head housing and the casing. A drive motor for driving the circular shaver heads is installed inside the casing. The swivel structure includes a gear frame connected to the shaver head housing and a shaver head fixing frame connected to the casing. The shaver head fixing frame is floatingly connected to the gear frame. The gear frame has a first limiting portion, and the shaver head fixing frame has a second limiting portion. Under the action of an external force, the first limiting portion can move relative to the second limiting portion to realize the swivel of the shaver head housing relative to the casing. Under the action of no external force, the first limiting portion and the second limiting portion are tightly fitted together in the rotation direction of the motor shaft of the drive motor.

[0004] Optionally, the dust cover is provided with a plurality of first mounting holes and a plurality of third mounting holes, the cutter head housing is provided with a first protrusion that mates with the first mounting hole, the housing is connected with a fixing ring, and the fixing ring is provided with a first positioning post that mates with the third mounting hole.

[0005] Optionally, the dust cover has an upper flange and a lower flange at its upper and lower ends, respectively. The first mounting hole is located on the upper flange, and the third mounting hole is located on the lower flange. It also includes a gear bracket mounted above the upper flange and a cutter head fixing bracket mounted above the lower flange. The gear bracket is used to press the upper flange against the cutter head housing, and the cutter head fixing bracket is used to press the lower flange against the fixing ring.

[0006] Optionally, the first limiting part is a hook, and the second limiting part is a hanging hole that cooperates with the hook; the width of the hanging hole gradually increases from top to bottom in the rotation direction of the motor shaft, and when there is no external force, the hook cooperates with the top of the hanging hole, and the two sides of the hook in the rotation direction of the motor shaft are tightly fitted with the inner wall of the hanging hole.

[0007] Optionally, a switch knob is exposed on the body, and a circuit board and a drive motor are installed inside the body. The drive motor is electrically connected to the circuit board. The switch knob is equipped with a plurality of magnets spaced apart from each other. The circuit board is electrically connected to a plurality of Hall elements that correspond one-to-one with the magnets. By rotating the switch knob, different magnets and corresponding Hall elements are activated to switch the speed of the drive motor.

[0008] Optionally, the body includes an inner shell, the inner shell having a third mounting groove; the switch knob includes a first connecting frame and an arc-shaped adjustment section connected to each other; one end of the first connecting frame away from the arc-shaped adjustment section is hinged to the bottom end of the third mounting groove; the number of magnets is two, namely a first magnet and a second magnet, the first magnet and the second magnet being respectively mounted on the left and right sides of the first connecting frame; the number of Hall elements is also two, namely a first Hall element adapted to sense and cooperate with the first magnet and a second Hall element adapted to sense and cooperate with the second magnet.

[0009] Optionally, the third mounting groove is a V-shaped groove, the first connecting frame includes a triangular block and a sector block connected to each other, the triangular block is hinged to the V-shaped groove, the sector block is connected to the arc-shaped adjustment section, and the first magnet and the second magnet are respectively installed on the left and right side walls of the sector block.

[0010] Optionally, the body includes an inner shell and an elastic limiting component for limiting the rotational position of the switch knob, and the inner shell is provided with a fourth mounting groove for mounting the elastic limiting component.

[0011] Optionally, it also includes a tool holder body and a second connecting frame and a drive frame that are driven to each other. The circular cutter head is floatingly connected to the tool holder body. The circular cutter head includes a circular cutter shell and a moving blade installed in the circular cutter shell. The circular cutter shell is freely tilted relative to the tool holder body. The second connecting frame is driven to the moving blade. The drive frame is driven to the drive motor. The drive frame is provided with a connector. The second connecting frame is provided with a mounting cavity for mounting the connector. The bottom surface of the mounting cavity has a center point that corresponds to the center of the radial cross-section circle of the circular cutter head. The upper surface of the connector is provided with a protrusion that abuts against the center point.

[0012] Optionally, the tool holder body is provided with a first pin, the circular tool shell is provided with a shaft hole that is hinged to the first pin, and the center of the radial cross-section circle of the circular tool head, which is located in the same plane as the center line of the first pin, is offset from the center line of the first pin, so as to realize that the circular tool shell can tilt freely relative to the tool holder body.

[0013] Optionally, it also includes a transmission gear that is connected to the drive motor, and a third spring is installed between the transmission gear and the drive frame; the drive frame is provided with multiple hooks, and the transmission gear is provided with multiple locking holes that correspond to and cooperate with the hooks, and the hooks can move up and down within the locking holes.

[0014] Optionally, the circumferential profile of the connector is star-shaped, and the pointed corner of the star abuts against the inner wall of the mounting cavity.

[0015] Optionally, the cutter head structure further includes a protective cover, a cutter holder assembly, and a cutter base assembly. The protective cover is equipped with a first magnetic element, the cutter holder assembly is equipped with a second magnetic element, and the cutter base assembly is equipped with a third magnetic element. The upper and lower ends of the second magnetic element are respectively adapted to attract and cooperate with the first magnetic element and the third magnetic element.

[0016] Optionally, the tool holder assembly includes a tool holder body and a mounting bracket for mounting the second magnetic component to the tool holder body; the mounting bracket has a first receiving cavity for mounting the second magnetic component, and the upper edge surface of the first receiving cavity abuts against the lower surface of the tool holder body, so as to realize that the second magnetic component is hiddenly disposed in the mounting bracket.

[0017] Optionally, the tool holder assembly includes a mounting base and a tool holder cover connected to each other. The mounting base has a second receiving cavity for mounting the third magnetic component, and the tool holder cover covers the mounting base to achieve a concealed arrangement of the third magnetic component within the mounting base.

[0018] Optionally, a circuit board is installed inside the housing. The circuit board is electrically connected to an indicator light and an electrostatic induction device. The circuit board controls the indicator light to illuminate based on the human body electrostatic signal detected by the electrostatic induction device.

[0019] Optionally, the electrostatic induction device includes an electrostatic receiving contact, one end of which is exposed outside the housing; or, the electrostatic induction device includes an electrostatic receiving contact, the housing is made of a conductive metal, and the electrostatic receiving contact is electrically connected to the housing.

[0020] Optionally, the indicator light is located inside the housing, the housing has a light-transmitting portion, and the position of the indicator light corresponds to the position of the light-transmitting portion; the housing includes a housing body and a housing cover connected to the upper end of the housing body, and the light-transmitting portion is located on the housing cover; a switch knob is provided between the housing body and the housing cover, and the light-transmitting portion is located above the switch knob.

[0021] Compared to existing technologies, the shaver of this invention, when subjected to external force, utilizes the first and second limiting parts to cause the shaver head to swing, allowing the round shaver head to shave cleanly during this swinging motion. When no external force is applied, the first and second limiting parts abut against each other, preventing the shaver head housing from rotating relative to the motor housing in the direction of motor shaft rotation at the moment the drive motor starts. This ensures the stability of the round shaver head and prevents the shaver head housing from shifting or moving in the direction of motor shaft rotation, improving the user's experience and comfort. Furthermore, the structure is simple and easy to manufacture, and a dust cover is added to the outside of the swinging structure to prevent dust from entering the shaver's interior. Attached Figure Description

[0022] Figure 1 This is an overall structural diagram of the razor according to an embodiment of the present invention;

[0023] Figure 2 This is a structural diagram of the inner shell of an embodiment of the present invention;

[0024] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0025] Figure 4 This is an assembly structure diagram of the circuit board and the on / off knob according to an embodiment of the present invention;

[0026] Figure 5 This is a front view of the switch knob according to an embodiment of the present invention;

[0027] Figure 6 This is a cross-sectional view of the shaver according to an embodiment of the present invention in a stopped state;

[0028] Figure 7 This is a cross-sectional view of the shaver according to an embodiment of the present invention in a high-speed operating state;

[0029] Figure 8 This is a cross-sectional view of the shaver of this invention in a low-speed operating state.

[0030] Figure 9 This is a structural diagram of the magnetically assembled cutter head structure according to an embodiment of the present invention;

[0031] Figure 10 A cross-sectional view of the magnetically assembled cutter head structure according to an embodiment of the present invention. Figure 1 ;

[0032] Figure 11 A cross-sectional view of the magnetically assembled cutter head structure according to an embodiment of the present invention. Figure 2 ;

[0033] Figure 12 A cross-sectional view of the magnetically assembled cutter head structure according to an embodiment of the present invention. Figure 3 ;

[0034] Figure 13 This is a partial structural diagram of the magnetically assembled cutter head structure according to an embodiment of the present invention;

[0035] Figure 14 This is a structural diagram of the protective cover according to an embodiment of the present invention;

[0036] Figure 15 This is a partial cross-sectional view of the hair trimmer according to an embodiment of the present invention;

[0037] Figure 16 This is a structural diagram of the dust cover fixing structure for the cutter head according to an embodiment of the present invention;

[0038] Figure 17 This is a structural diagram of the dust cover according to an embodiment of the present invention;

[0039] Figure 18 This is a structural diagram of the gear carrier according to an embodiment of the present invention;

[0040] Figure 19 The structure of the cutter head fixing bracket in an embodiment of the present invention Figure 1 ;

[0041] Figure 20 The structure of the cutter head fixing bracket in an embodiment of the present invention Figure 2 ;

[0042] Figure 21 This is a structural diagram of the fixing ring according to an embodiment of the present invention;

[0043] Figure 22 This is a structural diagram of the cutter head housing according to an embodiment of the present invention;

[0044] Figure 23 This is an overall structural diagram of the hair trimmer according to an embodiment of the present invention;

[0045] Figure 24 This is a partial cross-sectional view of the hair trimmer according to an embodiment of the present invention;

[0046] Figure 25 This is a cross-sectional view of the blade rocking structure according to an embodiment of the present invention;

[0047] Figure 26 This is a structural diagram of the drive gear carrier according to an embodiment of the present invention;

[0048] Figure 27 This is a structural diagram of the cutter head fixing bracket according to an embodiment of the present invention;

[0049] Figure 28 This is an overall view of the razor according to an embodiment of the present invention;

[0050] Figure 29 This is a cross-sectional view of a razor according to an embodiment of the present invention;

[0051] Figure 30 The internal structure of the razor according to an embodiment of the present invention. Figure 1 ;

[0052] Figure 31 The internal structure of the razor according to an embodiment of the present invention. Figure 2 ;

[0053] Figure 32 The internal structure of the razor according to an embodiment of the present invention. Figure 3 ;

[0054] Figure 33 This is a partial structure of the razor according to an embodiment of the present invention. Figure 1 ;

[0055] Figure 34 This is a partial cross-sectional view of the razor according to an embodiment of the present invention;

[0056] Figure 35 for Figure 34 Enlarged view of section B;

[0057] Figure 36 This is a partial structure of the razor according to an embodiment of the present invention. Figure 2 ;

[0058] Figure 37 This is a partial structure of the razor according to an embodiment of the present invention. Figure 3 ;

[0059] Figure 38 This is a partial cross-sectional view of the blade connection structure according to an embodiment of the present invention;

[0060] Figure 39 This is a top view of the drive frame according to an embodiment of the present invention;

[0061] Figure 40 This is a structural diagram of the drive frame according to an embodiment of the present invention;

[0062] Figure 41 This is a structural diagram of the tool holder body according to an embodiment of the present invention;

[0063] Figure 42 This is a structural diagram of the circular blade shell according to an embodiment of the present invention;

[0064] Figure 43This is a structural diagram of the tool holder body and part of the circular tool head assembly according to an embodiment of the present invention.

[0065] Explanation of reference numerals in the attached figures:

[0066] 1. Body; 11. Housing; 111. Light-transmitting part; 112. Housing body; 113. Housing top cover; 12. Fixing ring; 121. First positioning post; 122. Positioning opening; 13. Inner shell; 131. Third mounting slot; 132. Third limiting part; 133. Fourth limiting part; 134. Fourth mounting slot; 14. Elastic limiting component; 141. Second positioning post; 142. Second spring; 15. Switch knob; 151. First connecting bracket; 1511. Triangular block; 1512. Sector block; 152. Arc-shaped adjustment section; 153. Positioning hole; 1531. First positioning hole; 153 2. Second positioning hole; 1533. Third positioning hole; 16. Magnet; 161. First magnet; 162. Second magnet; 2. Cutter head structure; 21. Cutter head housing; 211. First protrusion; 212. Second mounting groove; 22. Cutter head assembly; 221. Round cutter head; 2211. Round cutter housing; 22111. Shaft hole; 2212. Moving blade; 2213. Fixed blade; 22131. Second pin; 222. Drive gear; 223. Second connecting bracket; 2231. Mounting cavity; 2232. Fifth mounting hole; 224. Drive bracket; 2241. Connector; 2242. Protrusion; 2243. 225. Hook; 225. Transmission gear; 2251. Locking hole; 226. Third spring; 23. Protective cover; 231. Third receiving cavity; 24. Tool holder assembly; 241. Tool holder body; 2411. First groove; 2412. First pin; 242. Mounting bracket; 2421. First receiving cavity; 25. Tool holder assembly; 251. Mounting base; 2511. Second receiving cavity; 252. Tool holder cover; 2521. Second groove; 2522. Buckle; 26. First magnetic component; 27. Second magnetic component; 28. Third magnetic component; 3. Swing structure; 31. Gear frame; 311. First limiting part; 312 1. First mounting groove; 313. Second protrusion; 32. Cutter head fixing bracket; 321. Second limiting part; 322. Fourth mounting hole; 323. Positioning block; 324. Positioning strip; 33. First spring; 34. Fourth receiving cavity; 4. Dust cover; 41. First mounting hole; 42. Upper flange; 43. Second mounting hole; 44. Third mounting hole; 45. Lower flange; 46. Positioning groove; 5. Drive motor; 6. Circuit board; 61. Hollow part; 62. Hall element; 621. First Hall element; 622. Second Hall element; 63. Indicator light; 64. Electrostatic induction element; 641. Electrostatic receiving contact. Detailed Implementation

[0067] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0068] In the description of this invention, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.

[0069] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. The accompanying drawings of embodiments of the present invention provide a coordinate system XYZ, where the positive direction of the X-axis represents the left, the negative direction of the X-axis represents the right, the positive direction of the Y-axis represents the front, the negative direction of the Y-axis represents the rear, the positive direction of the Z-axis represents the top, and the negative direction of the Z-axis represents the bottom.

[0070] This invention provides a razor, combined with Figures 23 to 28 As shown, the device includes a body 1, a cutter head structure 2, a swinging structure 3 connecting the body 1 and the cutter head structure 2, and a dust cover 4. The cutter head structure 2 includes a cutter head housing 21 and a plurality of circular cutter heads 221 mounted on the cutter head housing 21. The body 1 includes a housing 11. The upper and lower ends of the dust cover 4 are respectively connected to the cutter head housing 21 and the housing 11. A drive motor 5 for driving the circular cutter heads 221 is installed inside the housing 11. The swinging structure 3 includes a gear frame 31 connected to the cutter head housing 21 and a gear carrier 31 connected to the machine body 1. The cutter head fixing bracket 32 ​​is connected to the housing 11 and is floatingly connected to the gear frame 31. The gear frame 31 is provided with a first limiting part 311 and the cutter head fixing bracket 32 ​​is provided with a second limiting part 321. Under the action of external force, the first limiting part 311 can move relative to the second limiting part 321 to realize the swing of the cutter head housing 21 relative to the housing 11. Under the action of no external force, the first limiting part 311 and the second limiting part 321 are closely fitted to each other in the rotation direction of the motor shaft of the drive motor 5.

[0071] The dust cover 4 is flexible and can undergo elastic deformation during the rotation of the blade head structure 2 relative to the body 1. When the blade head fixing bracket 32 ​​and the gear bracket 31 are installed, the first limiting part 311 of the gear bracket 31 is located inside the second limiting part 321 of the blade head fixing bracket 32. The lower half of the second limiting part 321 has extra space. Under the action of external force, the first limiting part 311 moves up and down within the existing extra space, realizing the movement of the round blade head 221 inside the blade head housing 21 connected to the gear bracket 31, so that the round blade head 221 can be rotated in a certain direction, ultimately achieving the purpose of shaving. The external force refers to the force applied to the skin during shaving. The direction of the motor shaft rotation refers to the direction in which the head holder 32 and the gear holder 31 rotate perpendicular to the horizontal plane; the tight fit between the first limiting part 311 and the second limiting part 321 means that when there is no external force, the upper parts of the first limiting part 311 and the second limiting part 321 do not come into contact; when there is no external force, the upper parts of the first limiting part 311 and the second limiting part 321 come into contact. At this time, because there is no external force, the contact between the first limiting part 311 and the second limiting part 321 is in a stationary state. Therefore, when the shaver is started, there will be no rotational movement between the head holder 32 and the gear holder 31.

[0072] In this embodiment, when an external force is applied, the first limiting part 311 and the second limiting part 321 work together to make the entire shaver head swing, thereby allowing the round shaver head 221 to shave during the swinging motion, ensuring that the hair is shaved clean. When there is no external force, the first limiting part 311 and the second limiting part 321 abut against each other, so that the shaver head housing 21 will not rotate relative to the housing 11 in the rotation direction of the motor shaft at the moment the drive motor 5 starts, ensuring the stability of the round shaver head 221 and preventing the shaver head housing 21 from rotating and moving in the rotation direction of the motor shaft. This improves the user's experience and comfort. The structure is simple and easy to manufacture. A dust cover 4 is added to the outside of the swinging structure 3 to prevent dust from entering the shaver.

[0073] Optionally, combined Figure 28 , Figure 15 , Figure 16 , Figure 17 , Figure 22 As shown, the dust cover 4 is provided with a plurality of first mounting holes 41 and a plurality of third mounting holes 44, the cutter head housing 21 is provided with a first protrusion 211 that mates with the first mounting hole 41, the housing 11 is connected with a fixing ring 12, and the fixing ring 12 is provided with a first positioning post 121 that mates with the third mounting hole 44.

[0074] Multiple first mounting holes 41 are evenly spaced on the dust cover 4. The cutter head housing 21 has first protrusions 211 that cooperate with the first mounting holes 41. The number of first protrusions 211 is the same as the number of first mounting holes 41, and the positions of the multiple first mounting holes 41 and the multiple first protrusions 211 are arranged one-to-one. When installed, the first protrusions 211 are respectively located in the corresponding first mounting holes 41, realizing the fixed connection between the dust cover 4 and the cutter head housing 21. The number, shape, and size of the first mounting holes 41 are not fixed and unique. The preferred number of first mounting holes 41 is three, and the three first mounting holes 41 are symmetrically arranged, so the number of first protrusions 211 is also three. The shape of the first mounting holes 41 can be circular or elliptical, and the first mounting holes 41 and the first protrusions 211 are adapted to each other, so that the dust cover 4 can be firmly connected to the housing 11. In this embodiment, multiple first mounting holes 41 and multiple first protrusions 211 are used in conjunction. When the first mounting holes 41 and the first protrusions 211 are assembled in corresponding positions, the dust cover 4 is fixed on the cutter head housing 21, making the dust cover 4 more firmly fixed on the cutter head housing 21, ensuring that the dust cover 4 is not easy to fall off, and the structure is simple and easy to process.

[0075] Optionally, combined Figure 15 , Figure 16 , Figure 17 , Figure 18 As shown, the dust cover 4 has an upper flange 42 at its upper end, and the first mounting hole 41 is provided on the upper flange 42; it also includes a gear frame 31 installed above the dust cover 4, the gear frame 31 being used to press the upper flange 42 against the cutter head housing 21.

[0076] The upper flange 42 of the dust cover 4 is in the shape of a ring and is connected to the upper end of the dust cover 4. The upper flange 42 has three first mounting holes 41 with the same spacing. When the first mounting holes 41 are assembled with the first protrusions 211 in corresponding positions, the gear frame 31 is installed above the upper flange 42 of the dust cover 4 to press the upper flange 42, so that the upper flange 42 is firmly connected to the cutter head housing 21, which is conducive to a more secure connection between the dust cover 4 and the cutter head housing 21.

[0077] Optionally, combined Figure 15 , Figure 18 As shown, the gear frame 31 is provided with a first mounting groove 312, and the first protrusion 211 passes through the first mounting hole 41 and cooperates with the first mounting groove 312.

[0078] The gear carrier 31 has three first mounting slots 312. The three first mounting slots 312 are arranged at 120° intervals around the center point of the gear carrier 31 at the outer edge of the gear carrier 31. The first protrusion 211 on the cutter head housing 21 passes through the first mounting hole 41 and connects with the first mounting slot 312. The positions of the first mounting hole 41, the first protrusion 211 and the first mounting slot 312 are corresponding. This allows the gear carrier 31 to be firmly connected to the cutter head housing 21 through the cooperation of the first mounting slot 312 and the first protrusion 211. On the other hand, it also allows the dust cover 4 located below the gear carrier 31 to be firmly connected and not fall off.

[0079] Optionally, combined Figure 17 , Figure 18 , Figure 22 As shown, the upper flange 42 is provided with a plurality of second mounting holes 43, the gear frame 31 is provided with a plurality of second protrusions 313, and the cutter head housing 21 is provided with a plurality of second mounting grooves 212. The second protrusions 313 pass through the second mounting holes 43 and cooperate with the second mounting grooves 212.

[0080] There are three second mounting holes 43, which are set at 120° intervals with the center point of the dust cover 4 as the base point. That is, there are also three second protrusions 313. The positions of the second protrusions 313 correspond one-to-one with the positions of the second mounting holes 43. The positions of the second mounting holes 43, the second protrusions 313 on the gear frame 31, and the second mounting grooves 212 on the cutter head housing 21 are used in a corresponding and coordinated manner. After the second protrusions 313 pass through the second mounting holes 43, they connect with the second mounting grooves 212 on the cutter head housing 21, so that the connection between the gear frame 31, the dust cover 4 located below the gear frame 31, and the cutter head housing 21 is more secure.

[0081] Optionally, combined Figure 16 , Figure 17 , Figure 20 , Figure 21 As shown, the dust cover 4 has a lower flange 45 at its lower end, and the third mounting hole 44 is located on the lower flange 45; it also includes a blade holder 32 installed above the lower flange 45, and the blade holder 32 is used to press the lower flange 45 against the fixing ring 12.

[0082] The fixing ring 12 is located below the dust cover 4 and connects with the lower flange 45 at the lower end of the dust cover 4. The fixing ring 12 is provided with multiple sets of first positioning posts 121. The lower flange 45 of the dust cover 4 is provided with multiple third mounting holes 44. The number of first positioning posts 121 is the same as the number of third mounting holes 44. The positions of the first positioning posts 121 and the positions of the third mounting holes 44 are also set one by one. The shapes and sizes of the first positioning posts 121 and the third mounting holes 44 are compatible. When the installation is completed, the multiple first positioning posts 121 pass through the corresponding third mounting holes 44 to realize the fixed connection between the lower flange 45 of the dust cover 4 and the fixing ring 12, thereby achieving the purpose of firmly connecting the dust cover 4 and the machine body 1. The combined use of multiple sets of first positioning posts 121 and multiple third mounting holes 44 makes the dust cover 4 more firmly connected and less likely to fall off. A blade holder 32 is also provided above the lower flange 45 of the dust cover 4. The blade holder 32 works in conjunction with the fixing ring 12. The blade holder 32 is in contact with the upper surface of the lower flange 45, and the fixing ring 12 is in contact with the lower surface of the lower flange 45, so that the dust cover 4 is firmly connected between the blade holder 32 and the fixing ring 12.

[0083] Optionally, combined Figure 15 , Figure 19 As shown, the cutter head fixing bracket 32 ​​is provided with a fourth mounting hole 322, and the first positioning post 121 passes through the third mounting hole 44 and cooperates with the fourth mounting hole 322.

[0084] The cutter head fixing bracket 32 ​​is provided with multiple fourth mounting holes 322. The number of fourth mounting holes 322 is the same as the number of first positioning posts 121, and their positions correspond one-to-one. The shape and size of the fourth mounting holes 322 are adapted to the first positioning posts 121. When the installation is completed, the first positioning post 121 on the fixing ring 12 passes through the third mounting hole 44 located on the lower flange 45 and passes through the fourth mounting hole 322 on the cutter head fixing bracket 32, so as to realize the firm connection between the cutter head fixing bracket 32 ​​and the fixing ring 12, and also make the dust cover 4 located between the fixing ring 12 and the cutter head fixing bracket 32 ​​firmly connected.

[0085] Optionally, combined Figure 17 , Figure 19 , Figure 20 As shown, the lower flange 45 is provided with multiple positioning grooves 46, and the cutter head fixing bracket 32 ​​is provided with positioning blocks 323 that cooperate with the positioning grooves 46 to quickly position the mutual assembly position of the dust cover 4 and the housing 11.

[0086] Optionally, combined Figure 20 , Figure 21 As shown, the fixing ring 12 is provided with a positioning opening 122, and the cutter head fixing bracket 32 ​​is provided with a positioning strip 324 that cooperates with the positioning opening 122.

[0087] The lower flange 45 has four evenly spaced positioning grooves 46. The cutter head fixing bracket 32 ​​connected to the lower flange 45 has four positioning blocks 323 arranged at 90° intervals with the center point of the cutter head fixing bracket 32 ​​as the base point. The positioning grooves 46 and the positioning blocks 323 are corresponding and compatible. A positioning strip 324 is attached to the bottom of one of the positioning blocks 323. When the installation is completed, the four positioning blocks 323 of the cutter head fixing bracket 32 ​​are exactly located in the four positioning grooves 46 of the fixing ring 12. The positioning strip 324 connected to the positioning block 323 passes through the positioning opening 122 of the fixing ring 12, realizing the uniqueness of the fixing position of the fixing ring 12 and the cutter head fixing bracket 32, making the connection more secure and the disassembly more convenient.

[0088] Optionally, combined Figure 24 , Figure 25 As shown, a first spring 33 is provided between the gear frame 31 and the cutter head fixing frame 32. The upper and lower ends of the first spring 33 abut against the gear frame 31 and the cutter head fixing frame 32 respectively to realize that the gear frame 31 is floatingly connected to the cutter head fixing frame 32.

[0089] The first spring 33 is preferably a compression spring. In the absence of external force, the compression spring is in its original state, with its upper end abutting against the gear carrier 31 and its lower end abutting against the cutter head fixing bracket 32. At this time, under the spring force of the compression spring, the first limiting part 311 and the second limiting part 321 are tightly fitted together in the direction of motor shaft rotation, meaning that the upper parts of the first limiting part 311 and the second limiting part 321 are not in direct contact. Under the action of external force, the compression spring deforms, and the first limiting part 311 relative to the first limiting part 321... The second limiting part 321 moves downward, and the first limiting part 311 and the second limiting part 321 are no longer tightly fitted together. The first limiting part 311 can move within the space of the second limiting part 321, so that the circular cutter head 221 connected to the gear frame 31 can swing, and finally achieve the effect of the circular cutter head 221 shaving. The structure is simple and easy to process. When the external force is removed again, under the action of the spring force of the compression spring, the first limiting part 311 moves upward relative to the second limiting part 321 to reset and make the two seamlessly abut against each other again.

[0090] Optionally, combined Figure 24 , Figure 25 , Figure 26 , Figure 27 As shown, there are four of each of the first limiting part 311 and the second limiting part 321, and the first limiting part 311 and the second limiting part 321 are matched one-to-one.

[0091] With the center point of the gear carrier 31 as the base point, a first limiting part 311 is provided at 90° intervals, and with the center point of the cutter head fixing frame 32 as the base point, a second limiting part 321 is provided at 90° intervals. The first limiting parts 311 and the second limiting parts 321 are evenly spaced. The corresponding arrangement of multiple first limiting parts 311 and second limiting parts 321 makes the connection between the first limiting parts 311 and the second limiting parts 321 more secure when they are in close contact. This also makes the connection between the gear carrier 31 and the cutter head fixing frame 32 more secure. It is not easy for the cutter head structure 2 to loosen when it swings during operation, ensuring normal use and convenient assembly.

[0092] Optionally, combined Figure 25 , Figure 26 , Figure 27 As shown, the first limiting part 311 is a hook, and the second limiting part 321 is a hanging hole that cooperates with the hook.

[0093] When no external force is applied, the hook is attached to the hanging hole and in close contact with it, preventing the gear frame 31 with the first limiting part 311 and the cutter head fixing frame 32 with the second limiting part 321 from rotating relative to each other. There is extra space in the hanging hole. When an external force is applied, the hook is not in close contact with the hanging hole, and the hook moves in the extra space in the hanging hole, allowing the round cutter head 221 to swing, ultimately achieving the shaving effect of the round cutter head 221. The structure is simple and easy to process.

[0094] Optionally, combined Figure 25 , Figure 27 As shown, the width of the hanging hole gradually increases from top to bottom in the rotation direction of the motor shaft. When there is no external force, the hook engages with the top of the hanging hole, and the hooks are tightly engaged with the inner wall of the hanging hole on both sides in the rotation direction of the motor shaft.

[0095] The four hooks, four corresponding hanging holes, and compression springs work together. The width of the hanging holes increases from top to bottom. When no external force is applied, the compression spring is in its original state. Under the action of the spring force, the hooks are tightly attached to the top of the hanging holes, that is, the hooks are attached to the inner wall of the top of the hanging holes. At this time, the hooks and hanging holes are in a relatively static state. When an external force is applied, the compression spring deforms, causing the first limiting part 311 of the gear frame 31 to move relative to the second limiting part of the cutter head fixing frame 32. That is, the hooks move up and down in the hanging holes, ultimately causing the round cutter head 221 to swing and complete the shaving purpose.

[0096] Optionally, combined Figure 27As shown, the surface of the hook that contacts the hanging hole is an arc surface, which increases the contact area between the hook and the hanging hole, making the connection more secure and the structure simpler. Alternatively, the hanging hole can also be trapezoidal in shape, wider at the bottom and narrower at the top, in which case the surface of the hook that contacts the hanging hole is flat.

[0097] Optionally, combined Figure 24 , Figure 25 , Figure 27 As shown, the gear frame 31 and the cutter head fixing frame 32 are connected to form a fourth receiving cavity 34 that extends vertically. The circular cutter head 221 includes a circular cutter head 221 and a drive gear 222 that are connected to each other. The circular cutter head 221 is located above the fourth receiving cavity 34, and the drive motor 5 is located below the fourth receiving cavity 34. The drive gear 222 is connected to the motor shaft of the drive motor 5 inside the fourth receiving cavity 34.

[0098] The presence of the fourth receiving cavity 34 allows the drive motor 5 to drive the circular cutter head 221 above the fourth receiving cavity 34 to operate, thereby achieving the purpose of shaving with the circular cutter head 221. In addition, it also ensures that the operation of the cutter head swing structure 3 will not affect the normal operation of the drive motor 5 driving the circular cutter head 221. Furthermore, the structure is simple and easy to process.

[0099] Optionally, combined Figure 24 , Figure 25 As shown, under the drive of the drive motor 5, the drive gear 222 can rotate freely relative to the gear carrier 31. The drive gear 222 is located above the gear carrier 31, and the upper surface of the gear carrier 31 is not in contact with the drive gear 222 and there is a gap between them, so that the drive motor 5 can drive the drive gear 222 to rotate freely, and the gear carrier 31 will not interfere with the operation of the drive gear 222, thus ensuring the independent rotation of the drive gear 222.

[0100] Optionally, combined Figure 1 , Figure 4 , Figure 6 , Figure 7 , Figure 8 As shown, it includes a switch knob 15 suitable for exposure and installation on the body 1, and a circuit board 6 and a drive motor 5 suitable for installation inside the body 1. The drive motor 5 is electrically connected to the circuit board 6. The switch knob 15 is equipped with a plurality of magnets 16 arranged at intervals. The circuit board 6 is electrically connected to a plurality of Hall elements 62 corresponding one-to-one with the magnets 16. By rotating the switch knob 15, different magnets 16 are inductively engaged with the corresponding Hall elements 62 to switch the speed of the drive motor 5.

[0101] A magnet 16 is installed at the switch knob 15, and a Hall element 62 is installed on the circuit board 6. The magnet 16 and the Hall element 62 work together. When the user rotates the switch knob 15, the magnet 16 installed on the switch knob 15 also rotates. When the magnet 16 rotates to the position corresponding to the Hall element 62, the magnet 16 and the Hall element 62 generate magnetic induction. The Hall element 62 receives the magnetic induction signal and feeds it back to the circuit board 6. The circuit board 6 changes the voltage value supplied to the drive motor 5 according to the received magnetic induction signal, thereby adjusting the speed of the drive motor 5. During the rotation of the switch knob 15, only one magnet 16 can always sense the corresponding Hall element 62. That is, no matter how the switch knob 15 is rotated, there will never be two sets of magnets 16 sensing the Hall element 62. This ensures that the magnetic induction signal received by the circuit board 6 is unique and ensures normal operation. The magnetic induction signals generated by the magnets 16 at different positions and the corresponding Hall elements 62 are different. The circuit board 6 can control the different voltage values ​​supplied to the drive motor 5 according to the different magnetic induction signals, thereby realizing the switching of the speed of the drive motor 5 by rotating the switch knob 15.

[0102] In this embodiment, two or more sets of magnets 16 and Hall elements 62 connected to the circuit board 6 are provided on the switch knob 15. The magnets 16 and Hall elements 62 are correspondingly set and used in conjunction. When the magnets 16 and their corresponding Hall elements 62 are used in conjunction, a magnetic induction signal is generated and transmitted to the circuit board 6. The circuit board 6 controls the change of the voltage value of the drive motor 5 to change the speed, thereby realizing the adjustment of the speed and meeting the user's speed requirements in different situations. This structure, which switches the speed of the drive motor 5 by rotating the switch, has fewer parts, a simple structure, and is convenient and quick to operate.

[0103] Optionally, combined Figure 1 , Figure 2 , Figure 3 , Figures 5 to 8 As shown, the body 1 includes an inner shell 13, the inner shell 13 is provided with a third mounting groove 131, and the switch knob 15 includes a first connecting frame 151 and an arc-shaped adjustment section 152 connected to each other. One end of the first connecting frame 151 away from the arc-shaped adjustment section 152 is hinged to the bottom end of the third mounting groove 131.

[0104] The main body 1 adopts a cylindrical design, which allows users to grip the main body 1 better and increases the user's experience and comfort. The arc-shaped adjustment section 152 is exposed outside the main body 1. The center of the arc-shaped adjustment section 152 is the hinge point, which can be rotated around the hinge point to realize the left and right swing of the arc-shaped adjustment section 152. The magnet 16 can be installed on the first connecting frame 151 or on the arc-shaped adjustment section 152.

[0105] Optionally, combined Figure 6 , Figure 7 , Figure 8 As shown, there are two magnets 16, namely a first magnet 161 and a second magnet 162, which are respectively installed on the left and right sides of the first connecting frame 151; there are two Hall elements 62, namely a first Hall element 621 adapted to cooperate with the first magnet 161 and a second Hall element 622 adapted to cooperate with the second magnet 162.

[0106] There are two magnets 16 and two corresponding Hall elements 62, which are respectively set on the left and right sides of the circuit board 6. When the rotating arc-shaped adjustment section 152 makes the left magnet 16 and the left Hall element 62 sense each other, the driving motor 5 runs at high speed. When the rotating arc-shaped adjustment section 152 makes the right magnet 16 and the right Hall element 62 sense each other, the driving motor 5 runs at low speed. This allows for switching between high speed and low speed. The two speed settings are switched using a rocker mechanism, which is simple in structure and easy to operate.

[0107] Optionally, combined Figure 2 , Figure 3 , Figures 5 to 8 As shown, the third mounting groove 131 is a V-shaped groove, the first connecting frame 151 includes a triangular block 1511 and a sector block 1512 connected to each other, the triangular block 1511 is hinged to the V-shaped groove, the sector block 1512 is connected to the arc-shaped adjustment section 152, and the first magnet 161 and the second magnet 162 are respectively installed on the left and right side walls of the sector block 1512.

[0108] The triangular block 1511 is triangular in shape and hinged to the third mounting groove 131, which is a V-shaped groove. The triangular block 1511 has ample space within the V-shaped groove, facilitating its adjustment and rotation. When the arc-shaped adjustment section 152 rotates to the left, the sector block 1512 and the triangular block 1511 connected to it also rotate to the left. When rotated to a certain position, the left side of the triangular block 1511 abuts against the inner left sidewall of the V-shaped groove, providing positioning and limiting. At this time, the first magnet 161 located on the left side wall of the sector block 1512 is induction with the first Hall element 621; similarly, when the arc-shaped adjustment section 152 rotates to the right, the sector block 1512 and the triangular block 1511 connected to the sector block 1512 also rotate to the right. When it rotates to a certain position, the right side of the triangular block 1511 just touches the right inner side wall of the V-shaped groove, which plays a role in positioning and limiting. At this time, the second magnet 162 located on the right side wall of the sector block 1512 is induction with the second Hall element 622.

[0109] Optionally, combined Figure 3 , Figures 5 to 8 As shown, the inner shell 13 is also provided with a third limiting part 132 and a fourth limiting part 133. The third limiting part 132 and the fourth limiting part 133 are respectively adapted to abut against the left and right side walls of the fan-shaped block 1512. The first Hall element 621 is located behind the third limiting part 132, and the second Hall element 622 is located behind the fourth limiting part 133, so that the Hall element 62 can be spaced a certain distance from the magnet 16, and the Hall element 62 is wrapped inside the inner shell 13, which can be better protected.

[0110] The third limiting part 132 and the fourth limiting part 133 are provided so that the switch knob 15 can only rotate within a limited range of space, limiting the extreme position of rotation. When the third limiting part 132 abuts against the left side wall of the sector block 1512, the drive motor 5 is in a low-speed running state. When the third limiting part 132 abuts against the right side wall of the sector block 1512, the drive motor 5 is in a high-speed running state.

[0111] Optionally, combined Figure 4 As shown, the circuit board 6 has a hollowed-out portion 61 through which the back of the V-shaped groove passes; this design makes the overall structure more compact. When the switch knob 15 is rotated to the left and right sides respectively, the magnet 16 on the knob switch and the corresponding Hall element 62 are closer together, which is conducive to realizing mutual induction between the magnet 16 and the Hall element 62 and improving the sensitivity of the induction coordination.

[0112] Optionally, combined Figure 2 , Figure 3, Figure 5 As shown, the body 1 includes an inner shell 13 and an elastic limiting component 14 for limiting the rotational position of the switch knob 15. The inner shell 13 is provided with a fourth mounting groove 134 for mounting the elastic limiting component 14. The setting of the elastic limiting component 14 enables the switch knob 15 to stay stably when rotated to the high speed position, low speed position or off position.

[0113] Optionally, combined Figure 2 , Figure 3 , Figure 5 As shown, the elastic limiting component 14 includes a second positioning post 141 and a second spring 142. The two ends of the second spring 142 are respectively connected to the second positioning post 141 and the fourth mounting groove 134. The switch knob 15 is provided with a plurality of positioning holes 153, and one of the plurality of positioning holes 153 is selected to cooperate with the second positioning post 141.

[0114] The size and shape of the positioning hole 153 are designed to match the second positioning post 141. When the second positioning post 141 is in contact with the positioning hole 153 at the center of the switch knob 15, the device is in the off state. When the second positioning post 141 is in contact with the positioning hole 153 on the far right of the switch knob 15, the device is in a high-speed rotation state. When the second positioning post 141 is in contact with the positioning hole 153 on the far left of the switch knob 15, the device is in a low-speed rotation state. This design using the positioning hole 153 and the second positioning post 141 is simple and reliable. The second positioning post 141, in conjunction with different positioning holes 153, enables the setting of different gears.

[0115] Optionally, combined Figure 2 , Figure 3 , Figure 5 As shown, the number of positioning holes 153 is at least three, namely a first positioning hole 1531, a second positioning hole 1532, and a third positioning hole 1533 arranged sequentially. When the second positioning post 141 is engaged with the second positioning hole 1532, the drive motor 5 is in the off state, i.e., the off position. When the second positioning post 141 is engaged with the first positioning hole 1531, the drive motor 5 is in the high-speed running state, i.e., the high-speed position. When the second positioning post 141 is engaged with the third positioning hole 1533, the drive motor 5 is in the low-speed running state, i.e., the low-speed position.

[0116] The high-speed and low-speed gears are spaced far apart, so the magnet 16 and Hall element 62 will not interfere with each other when they are sensing each other in the high-speed or low-speed gears, thus preventing signal interference and ensuring smooth switching between gears. In addition, the number of positioning holes 153 can be set to four, namely high-speed, medium-speed, off-speed, and low-speed, or six, namely ultra-high-speed, normal high-speed, medium-speed, off-speed, normal low-speed, and ultra-low-speed.

[0117] Optionally, combined Figures 33 to 43 As shown, the tool holder includes a tool holder body 241, a circular cutter head 221 floatingly connected to the tool holder body 241, and a second connecting frame 223 and a drive frame 224 that are mutually connected. The circular cutter head 221 includes a circular cutter shell 2211 and a moving blade 2212 installed in the circular cutter shell 2211. The circular cutter shell 2211 is freely tilted relative to the tool holder body 241. The second connecting frame 223 is connected to the moving blade 2212. The drive frame 224 is adapted to be connected to a drive motor 5. The drive frame 224 is provided with a connector head 2241. The second connecting frame 223 is provided with a mounting cavity 2231 for mounting the connector head 2241. The bottom surface of the mounting cavity 2231 has a center point corresponding to the center of the radial cross-section circle of the circular cutter head 221. The upper surface of the connector head 2241 is provided with a protrusion 2242 that abuts against the center point.

[0118] Among them, the moving blade 2212 can freely tilt along with the circular blade housing 2211. That is, when no external force is applied to the circular blade head 221, the overall structure of the circular blade head 221 can freely tilt to one side relative to the tool holder body 241 under its own gravity. In this embodiment, the circular blade head 221 tilts towards the outer edge of the tool holder body 241. The second connecting bracket 223 is coaxially arranged with the circular blade head 221. The center point of the mounting cavity 2231 overlaps with the center of the circular blade head 221 in the axial direction. The protrusion 2242 on the connector 2241 has a small area and can be accurately supported on the center point, ensuring that the circular blade head 221 remains tilted when not in operation. When in operation, the drive motor 5 The drive frame 224 is started and rotates synchronously, which in turn drives the second connecting frame 223 to rotate synchronously. The second connecting frame 223 drives the moving blade 2212 to rotate synchronously. The moving blade 2212 works in conjunction with the fixed blade 2213 connected to the circular blade housing 2211 to trim hair. During operation, the fixed blade 2213 comes into contact with the skin and exerts an external force on the circular blade head 221. Under the action of the external force, the circular blade head 221 can swing relative to the blade holder body 241 so that hair at all angles can be shaved clean. The circular blade head 221 has a cylindrical outer contour structure, and the cross section taken in the radial direction on the cylindrical outer contour structure is the radial cross section circle of the circular blade head 221 described above.

[0119] In this embodiment, a protrusion 2242 with a relatively small surface area is provided on the connector 2241 of the drive frame 224, so that when the second connector 223 and the drive frame 224 are assembled, the protrusion 2242 can accurately press against the center point of the bottom surface of the mounting cavity 2231 of the second connector 223, ensuring that the freely tilted circular cutter head 221 can always remain tilted in its natural state when not working, in order to meet product requirements. In addition, by using the protrusion 2242 to contact the second connector 223, the overall contact area is reduced, which can achieve the effect of reducing noise.

[0120] Optionally, combined Figure 33 , Figure 41 , Figure 42 , Figure 43 As shown, the tool holder body 241 is provided with a first pin 2412, and the circular tool shell 2211 is provided with a shaft hole 22111 that is hinged to the first pin 2412. The center of the radial cross-section circle of the circular tool head 221, which is located in the same plane as the center line of the first pin 2412, is offset from the center line of the first pin 2412, so as to realize that the circular tool shell 2211 can freely tilt relative to the tool holder body 241.

[0121] Each circular cutter housing 2211 has two shaft holes 22111, which are symmetrically arranged. Correspondingly, the tool holder body 241 also has two first pins 2412. After the two first pins 2412 are hinged to the two shaft holes 22111, the circular cutter head 221 can swing relative to the tool holder body 241 in a rocker motion when subjected to external force. The structure of the first pins 2412 and shaft holes 22111 mutually engaging achieves the hinged connection between the tool holder body 241 and the circular cutter head 221. Furthermore, the center of the radial cross-section circle of the circular cutter head 221, which is located in the same plane as the centerline of the first pin, is aligned with the first pin. The centerline of shaft 2412 is offset, so that the centerline of the first pin 2412 is eccentrically set relative to the round cutter head 221. This allows the round cutter head 221 to tilt freely relative to the tool holder body 241 when no external force is applied, and the protrusion 2242 abuts against the center point of the bottom surface of the mounting cavity 2231, so that the round cutter head 221 can maintain its tilt in its natural state when not in operation, making it easy to achieve tilt reset to meet appearance requirements. In this embodiment, the round cutter heads 221 are all tilted towards the outer edge of the tool holder body 241, that is, the centerline of the first pin 2412 is offset from the center of the radial cross-section circle of the round cutter head 221 towards the outer edge of the tool holder body 241.

[0122] Optionally, combined Figure 34 , Figure 35 , Figure 38 , Figure 43As shown, the circular blade head 221 also includes a fixed blade 2213. The fixed blade 2213 is provided with a second pin 22131. The second connecting frame 223 is provided with a fifth mounting hole 2232 that rotatably engages with the second pin 22131. Through the rotatable engagement of the second pin 22131 and the fifth mounting hole 2232, the coaxiality of the second connecting frame 223 driving the moving blade 2212 to rotate is better and the rotation is more stable, so as to drive the moving blade 2212 to rotate relative to the fixed blade 2213 to achieve the purpose of cutting hair.

[0123] Optionally, combined Figure 37 , Figure 38 As shown, it also includes a gear transmission assembly, which includes a drive gear 222 and multiple transmission gears 225 that mesh with the drive gear 222. The drive gear 222 is connected to the drive motor 5, and the transmission gears 225 are connected to the drive frame 224. In this embodiment, there are three circular cutter heads 221, and correspondingly three transmission gears 225. When the drive motor 5 is working, it drives the drive gear 222 to rotate, and the drive gear 222 drives the three transmission gears 225 to rotate synchronously. The transmission gears 225 drive the corresponding drive frame 224 to rotate, and the drive frame 224 drives the second connecting frame 223 to rotate. The second connecting frame 223 drives the corresponding circular cutter head 221 to perform cutting work.

[0124] Optionally, combined Figure 37 , Figure 38 As shown, it also includes a transmission gear 225 that is connected to the drive motor 5. A third spring 226 is installed between the transmission gear 225 and the drive frame 224. Under the action of the spring force of the third spring 226, the protrusion 2242 of the connector 2241 of the drive frame 224 is pushed to firmly press against the second connector 223. The third spring 226 is provided so that the drive frame 224 and the circular cutter head 221 can have space to move up and down to prevent the structure from jamming.

[0125] Optionally, combined Figure 37 As shown, the drive frame 224 is provided with multiple hooks 2243, and the transmission gear 225 is provided with multiple locking holes 2251 that correspond to and cooperate with the hooks 2243. The hooks 2243 can move up and down within the locking holes 2251. The multiple hooks 2243 are evenly spaced on the outer circumferential surface of the drive frame 224. Through the mutual cooperation of the hooks 2243 and the locking holes 2251, the transmission gear 225 and the drive frame 224 can be connected to each other, and the drive frame 224 can be ensured to have space for up and down movement relative to the transmission gear 225. The overall structure is simple and the operation is reliable.

[0126] Optionally, combined Figure 37As shown, the hook 2243 and the hole 2251 are fixed to each other in the rotation direction of the transmission gear 225. That is, the two side walls of the hook 2243 in the rotation direction of the transmission gear 225 are in close contact with the inner wall of the hole 2251, ensuring that the transmission gear 225 can drive the drive frame 224 to rotate synchronously during the rotation process, without causing rotational movement in the rotation direction of the transmission gear 225, thus ensuring the stability of the rotational motion.

[0127] Optionally, combined Figure 38 , Figure 39 , Figure 40 As shown, the circumferential contour of the connector 2241 is star-shaped, and the sharp corner of the star abuts against the inner wall of the mounting cavity 2231; the circumferential contour of the connector 2241 is preferably pentagonal, and the inner contour of the mounting cavity 2231 is pentagonal. Compared with a pentagon, a pentagon is less prone to slipping and wear, and the pentagon makes angular contact with the inner wall of the tool holder body 241, resulting in a small contact area and greatly reducing noise.

[0128] Optionally, combined Figure 9 , Figure 10 , Figure 11 As shown, the assembly includes a protective cover 23, a tool holder assembly 24, and a tool holder assembly 25. The protective cover 23 is equipped with a first magnetic element 26, the tool holder assembly 24 is equipped with a second magnetic element 27, and the tool holder assembly 25 is equipped with a third magnetic element 28. The upper and lower ends of the second magnetic element 27 are respectively adapted to attract and cooperate with the first magnetic element 26 and the third magnetic element 28.

[0129] The tool holder assembly 24 is mounted above the tool holder assembly 25, which is mounted on the machine body 1. A protective cover 23 is provided to protect the tool head structure 2. The size of the protective cover 23 is adapted to the tool head structure 2 that needs to be covered. When assembled, the components from top to bottom are: the protective cover 23, the tool holder assembly 24 for mounting the round tool head 221, and the tool holder assembly 25 for mounting the tool holder assembly 24. The first magnetic component 26, the second magnetic component 27, and the third magnetic component 28 are also arranged from top to bottom. The magnetic components attract each other through magnetic force. The first magnetic component 26, the second magnetic component 27, and the third magnetic component 28 can all be magnets. In use, the first magnetic component 26 and the second magnetic component 27 attract each other due to their opposite polarities, and the second magnetic component 27 and the third magnetic component 28 attract each other due to their opposite polarities. Alternatively, the first magnetic component 26 and the third magnetic component 28 can be iron blocks, and the second magnetic component 27 can be a magnet. The iron block can be replaced with a magnetically affinityous metal block such as nickel or cobalt.

[0130] The first magnetic component 26, the second magnetic component 27, and the third magnetic component 28 work together as follows: When the tool holder assembly 24 needs to be installed on the tool holder assembly 25, the third magnetic component 28 on the tool holder assembly 25 and the second magnetic component 27 on the tool holder assembly 24 are attracted to each other, thus allowing the tool holder assembly 24 to be installed on the tool holder assembly 25; when the protective cover 23 needs to be installed on the tool holder assembly 24, the second magnetic component 27 on the tool holder assembly 24 and the first magnetic component 26 on the protective cover 23 are attracted to each other; when the protective cover 23 is not installed on the tool holder assembly 24 and the tool holder assembly 24 is not installed on the tool holder assembly 25, the user can directly remove the protective cover 23 and the tool holder assembly 24 respectively, so that the three sets of magnetic components cannot attract each other and work together, making disassembly and assembly very convenient.

[0131] In this embodiment, the protective cover 23, the tool holder assembly 24, and the tool holder assembly 25 are detachably connected through the cooperation of three sets of magnetic components. The operation is simple and convenient. The magnetic connection method allows the user to easily place each magnetic component in its corresponding position during assembly, which increases the user's experience and comfort. It is also not easily damaged and has a long service life.

[0132] Optionally, combined Figure 10 , Figure 14 As shown, the protective cover 23 is provided with a third receiving cavity 231 for mounting the first magnetic component 26.

[0133] The number of cutting heads can be set to three groups and arranged in a triangular and closely distributed manner on the cutting head assembly 24. There are three first magnetic elements 26, two magnetic elements 27 and three magnetic elements 28, and the positions of each magnetic element are arranged corresponding to each other. The three groups of first magnetic elements 26 are respectively installed in the third receiving cavity 231 of the protective cover 23 at intervals. When the protective cover 23 is on the cutting head assembly 24, the three groups of first magnetic elements 26 are arranged in a triangular position between the three cutting heads, so that the blades in the cutting heads will not be magnetized by the first magnetic elements 26, thereby ensuring the normal use of the blades.

[0134] Optionally, combined Figure 10 , Figure 11 , Figure 13 As shown, the tool holder assembly 24 includes a tool holder body 241 and a mounting bracket 242 for mounting the second magnetic component 27 onto the tool holder body 241; the addition of the mounting bracket 242 facilitates the installation of the second magnetic component 27 and makes assembly convenient.

[0135] Optionally, combined Figure 11 , Figure 12 , Figure 13As shown, the mounting bracket 242 is provided with a first receiving cavity 2421 for mounting the second magnetic component 27. The upper edge surface of the first receiving cavity 2421 abuts against the lower surface of the tool holder body 241, so that the second magnetic component 27 is hidden in the mounting bracket 242.

[0136] The mounting bracket 242 extends outward from its center point as a base, with three supports spaced at 120° intervals. A second magnetic component 27 is installed at the outer end of each support. The design of the mounting bracket 242 ensures that the second magnetic component 27, located in the middle, has an independent component for fixation, making its installation more secure and preventing it from falling off. A first receiving cavity 2421 is connected to the outer end of the three supports for installing the second magnetic component 27. The shape and size of the first receiving cavity 2421 are adapted to the shape and size of the second magnetic component 27. The second magnetic component 27 is concealed within the first receiving cavity 2421, preventing it from being exposed and hidden from view. This avoids the risk of rust if the second magnetic component 27 is made of iron or other metals, ensuring normal use.

[0137] Optionally, combined Figure 13 As shown, the mounting bracket 242 and the tool holder body 241 are fixedly connected to each other by heat pressing. The design of fixing the mounting bracket 242 and the tool holder body 241 by heat pressing makes the connection between the mounting bracket 242 and the tool holder body 241 more firm and tight, and will not fall off. It is also convenient, simple and quick to operate and process.

[0138] Optionally, combined Figure 10 , Figure 11 As shown, the tool holder body 241 is provided with a first groove 2411 for mounting the second magnetic component 27.

[0139] When the installation is complete, a portion of the second magnetic component 27 is installed in the first receiving cavity 2421 of the mounting bracket 242, and the other portion of the second magnetic component 27 is installed in the first groove 2411 of the tool holder body 241. This not only ensures that the second magnetic component 27 is completely hidden in the first receiving cavity 2421 and the first groove 2411, preventing it from contacting the outside world and avoiding damage to the second magnetic component 27, thus ensuring its long-term effective use, but also ensures that the position between the mounting bracket 242 and the tool holder body 241 is firmly fixed after installation, preventing movement due to external forces, thereby ensuring normal use.

[0140] Optionally, combined Figure 10 , Figure 11As shown, the tool holder assembly 25 includes a mounting base 251 and a tool holder cover 252 connected to each other. The mounting base 251 has a second receiving cavity 2511 for mounting the third magnetic component 28. The tool holder cover 252 covers the mounting base 251 to achieve a concealed installation of the third magnetic component 28 within the mounting base 251. The shape and size of the second receiving cavity 2511 are adapted to the shape and size of the third magnetic component 28. The addition of the tool holder cover 252 ensures that the third magnetic component 28 is concealed within the tool holder assembly 25, preventing it from being exposed and thus avoiding potential rusting if the third magnetic component 28 is made of iron or other metal materials. This ensures normal use.

[0141] Optionally, combined Figure 10 , Figure 11 As shown, the tool holder cover 252 is provided with a second groove 2521 for mounting the third magnetic component 28.

[0142] When installed, a portion of the third magnetic component 28 is installed in the second receiving cavity 2511 of the mounting base 251, and the other portion is installed in the second groove 2521 of the tool holder cover 252. The third magnetic component 28 is concealed. By dividing the tool holder assembly 25 into two layers consisting of the mounting base 251 and the tool holder cover 252, the third magnetic component 28 is installed in the lower mounting base 251 and covered by the tool holder cover 252. This makes the appearance neater and more aesthetically pleasing, and the third magnetic component 28 is less prone to rusting. The shape and size of the third magnetic component 28, the second groove 2521, and the second receiving groove are compatible, making them easy to use. Moreover, after installation, the position between the tool holder cover 252 and the mounting base 251 is firmly fixed, and it is not easy for the position to move under external force, ensuring normal use.

[0143] Optionally, combined Figure 10 , Figure 11 As shown, the edge of the tool holder cover 252 is provided with a plurality of spaced buckles 2522, which are snapped together with the edge of the mounting base 251. Through the snap-fit ​​design between the buckles 2522 and the edge of the mounting base 251, the tool holder cover 252 and the mounting base 251 are detachably connected, making the installation and removal of the tool holder cover 252 and the mounting base 251 more convenient.

[0144] Optionally, combined Figures 28 to 32 As shown, the device includes a housing 11 and a circuit board 6 installed inside the housing 11. The circuit board 6 is electrically connected to an indicator light 63 and an electrostatic induction device 64. The circuit board 6 controls the indicator light 63 to light up based on the human body electrostatic signal detected by the electrostatic induction device 64.

[0145] The electrostatic induction element 64 is used to detect static electricity from the human body. When the user wants to know the remaining battery power of the shaver without turning it on, the user only needs to hold the shaver and directly or indirectly contact the electrostatic induction element 64. The static electricity from the user's body is transferred to the shaver. The electrostatic induction element 64 detects the static electricity from the user's body and generates an electrical signal, which is sent to the circuit board 6. After receiving the electrical signal, the circuit board 6 controls the indicator light 63 to light up. When the user puts down the shaver, no static electricity is transferred to the shaver, so the electrostatic induction element 64 can no longer detect static electricity from the human body, and the indicator light 63 turns off.

[0146] In this embodiment, electrostatic induction technology is used. When the user's hand directly or indirectly touches the shaver, the electrostatic induction element 64 detects static electricity, and the indicator light 63 lights up. This allows the user to check the real-time battery status of the shaver whether the shaver switch knob 15 is off or on, so that the user can charge the shaver in time when the battery is low, ensuring normal use of the shaver and saving power.

[0147] In one embodiment, the electrostatic induction element 64 includes an electrostatic receiving contact 641, one end of which is exposed outside the housing 11.

[0148] One end of the electrostatic receiving contact 641 is connected to the circuit board 6, and the other end extends outward through the lower part of the housing 11 and is exposed outside the housing 11, so that the user can find the electrostatic receiving contact 641 more quickly and conveniently, and the user can directly touch the electrostatic receiving contact 641 with his / her hand, thereby achieving the effect of the indicator light 63 lighting up.

[0149] In another embodiment, combined Figure 29 , Figure 30 As shown, the electrostatic induction device 64 includes an electrostatic receiving contact 641, the housing 11 is made of conductive metal, and the electrostatic receiving contact 641 is electrically connected to the housing 11.

[0150] One end of the electrostatic receiving contact 641 is connected to the circuit board 6, and the other end extends to contact the inner wall of the lower part of the housing 11. When the user wants to check the current battery level of the shaver, they only need to hold the outer wall of the housing 11. The static electricity from the human body is transmitted to the circuit board 6 through the electrostatic receiving contact 641, causing the indicator light 63 to light up, thus indicating the current battery level of the shaver. The operation is simple; the user only needs to hold the housing 11 comfortably. The housing 11 is made of a conductive metal material, such as copper, aluminum, platinum, or stainless steel, which have good conductivity.

[0151] Optionally, combined Figure 29As shown, the electrostatic receiving contact 641 is a spring, and one end of the spring abuts against the inner wall of the housing 11.

[0152] One end of the spring is connected to the circuit board 6, and the other end abuts against the inner wall of the housing 11. The spring has elasticity, which can ensure that the spring can be tightly abutted against the inner wall of the housing 11, so that electrostatic transmission can proceed normally and ensure that the control indicator light 63 of the circuit board 6 is lit normally.

[0153] Optionally, combined Figure 28 , Figure 30 As shown, the indicator light 63 is disposed inside the housing 11, and the housing 11 has a light-transmitting part 111. The position of the indicator light 63 corresponds to the position of the light-transmitting part 111.

[0154] When the indicator light 63 is lit, the power status of the shaver can be displayed through the light-transmitting part 111 of the housing 11. When the indicator light 63 is not lit, the indicator light 63 cannot be seen from the outside of the housing 11. This makes the overall appearance of the shaver consistent, simple and beautiful.

[0155] Optionally, combined Figure 28 , Figure 29 As shown, the housing 11 includes a housing body 112 and a housing cover 113 connected to the upper end of the housing body 112, and the light-transmitting part 111 is provided on the housing cover 113.

[0156] The housing body 112 is preferably made of conductive metal, which is conducive to the transmission of static electricity and enables the indicator light 63 to light up and turn off; the housing cover 113 is made of semi-transparent plastic, which allows the user to check the shaver's battery level through the housing cover 113.

[0157] Optionally, combined Figure 28 , Figure 30 As shown, a switch knob 15 is provided between the housing body 112 and the housing cover 113, and the light-transmitting part 111 is located above the switch knob 15.

[0158] The display screen can be located on top of the switch knob 15. When the user is using the shaver, the user's hand only holds the main body 112 of the shaver to shave, without obstructing the display screen on the switch knob 15. This allows the user to check the display screen and know the battery status of the shaver while it is in use.

[0159] Optionally, combined Figure 28 , Figure 29 As shown, the housing 11 has a cylindrical structure.

[0160] The casing 11 adopts a cylindrical design, which not only makes the internal space of the casing 11 large enough to install components such as circuit board 6 and indicator light 63, but also makes the user's experience and comfort when holding the casing 11 better.

[0161] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A shaver, characterized by The utility model provides a circular cutter head structure, including fuselage (1), cutter head structure (2) and connect between the fuselage (1) and the cutter head structure (2) swing structure (3) and dust cover (4), the cutter head structure (2) includes cutter head shell (21) and a plurality of installation cutter head shell (21) round cutter head (221), the fuselage (1) includes casing (11), and the upper and lower ends of dust cover (4) are connected with cutter head shell (21) and casing (11) respectively, and drive motor (5) for driving round cutter head (221) operation is installed in casing (11), swing structure (3) includes gear carrier (31) connected with cutter head shell (21) and cutter head fixed frame (32) connected with casing (11), and cutter head fixed frame (32) is floatingly connected with gear carrier (31), and gear carrier (31) is equipped with first limiting portion (311), and cutter head fixed frame (32) is equipped with second limiting portion (321), when under the action of external force, first limiting portion (311) can be moved relative to second limiting portion (321) to realize that cutter head shell (21) is relative to casing (11) swing, first limiting portion (311) is hook, and second limiting portion (321) is the hook cooperation of hanging hole, the width of hanging hole in the rotation direction of motor shaft of drive motor (5) gradually increases from top to bottom, when there is no external force, the hook is matched with the top of hanging hole, and the both sides of hook in the rotation direction of motor shaft of drive motor (5) are tightly matched with the inner wall of hanging hole.

2. The shaving razor of claim 1, wherein, Dust cover (4) is equipped with a plurality of first installation hole (41) and a plurality of third installation hole (44), and cutter head shell (21) is equipped with the first convex column (211) cooperation of first installation hole (41), and casing (11) is connected with fixed ring (12), and fixed ring (12) is equipped with the first positioning column (121) cooperation of third installation hole (44).

3. The shaving razor of claim 2, wherein, The upper and lower ends of dust cover (4) are equipped with upper flanging (42) and lower flanging (45) respectively, first installation hole (41) is arranged in upper flanging (42), and third installation hole (44) is arranged in lower flanging (45), further including gear carrier (31) installed above upper flanging (42) and cutter head fixed frame (32) installed above lower flanging (45), gear carrier (31) is used to compress upper flanging (42) to cutter head shell (21), and cutter head fixed frame (32) is used to compress lower flanging (45) to fixed ring (12).

4. The shaving razor of claim 1, wherein, The switch knob (15) is arranged on the machine body (1), the circuit board (6) and the driving motor (5) are arranged in the machine body (1), the driving motor (5) is electrically connected with the circuit board (6), the switch knob (15) is provided with a plurality of magnets (16) arranged at intervals, the circuit board (6) is electrically connected with a plurality of Hall elements (62) corresponding to the magnets (16), and the rotation of the switch knob (15) makes different magnets (16) and corresponding Hall elements (62) inductive cooperation to realize the switching of the rotating speed of the driving motor (5).

5. The shaving razor of claim 4, wherein, The machine body (1) comprises an inner container shell (13) provided with a third mounting groove (131), the switch knob (15) comprises a first connecting frame (151) and an arc-shaped adjusting section (152) connected with each other, and the first connecting frame (151) is hingedly connected with the bottom end of the third mounting groove (131) at an end away from the arc-shaped adjusting section (152); the number of the magnets (16) is two, which are a first magnet (161) and a second magnet (162), and the first magnet (161) and the second magnet (162) are arranged on the left and right sides of the first connecting frame (151) respectively; the number of the Hall elements (62) is two, which are a first Hall element (621) adapted to inductive cooperation with the first magnet (161) and a second Hall element (622) adapted to inductive cooperation with the second magnet (162).

6. The shaving razor of claim 5, wherein, The third mounting groove (131) is a V-shaped groove, the first connecting frame (151) comprises a triangular block (1511) and a sector block (1512) connected with each other, the triangular block (1511) is hingedly connected with the V-shaped groove, the sector block (1512) is connected with the arc-shaped adjusting section (152), and the first magnet (161) and the second magnet (162) are arranged on the left and right side walls of the sector block (1512) respectively.

7. The shaving razor of claim 4, wherein, The machine body (1) comprises an inner container shell (13) and an elastic limiting assembly (14) for limiting the rotating position of the switch knob (15), and the inner container shell (13) is provided with a fourth mounting groove (134) for mounting the elastic limiting assembly (14).

8. The shaver according to claim 1, characterized in that The knife head structure (2) further comprises a tool rest body (241), a second connecting frame (223) and a driving frame (224) which are in transmission connection with each other, the circular knife head (221) is in floating connection relative to the tool rest body (241), the circular knife head (221) comprises a circular knife shell (2211) and a moving blade (2212) which is installed in the circular knife shell (2211), the circular knife shell (2211) is free to tilt relative to the tool rest body (241), the second connecting frame (223) is in transmission connection with the moving blade (2212), and the driving frame (224) is in transmission connection with the driving motor (5); the driving frame (224) is provided with a connecting head (2241), the second connecting frame (223) is provided with a mounting cavity (2231) for mounting the connecting head (2241), a bottom surface of the mounting cavity (2231) has a center point which is arranged in correspondence with the center of a radial section circle of the circular knife head (221), and an upper surface of the connecting head (2241) is provided with a convex point (2242) which is in abutment with the center point.

9. The shaver according to claim 8, characterized in that The tool rest body (241) is provided with a first pin shaft (2412), the circular knife shell (2211) is provided with a shaft hole (22111) which is hinged with the first pin shaft (2412), and the center of the radial section circle of the circular knife head (221) which is in the same plane as a center line of the first pin shaft (2412) deviates from the center line of the first pin shaft (2412), so as to realize that the circular knife shell (2211) is free to tilt relative to the tool rest body (241).

10. The shaver according to claim 8, characterized in that The knife head structure (2) further comprises a transmission gear (225) which is in transmission connection with the driving motor (5), a third spring (226) is installed between the transmission gear (225) and the driving frame (224); the driving frame (224) is provided with a plurality of clamping hooks (2243), the transmission gear (225) is provided with a plurality of clamping holes (2251) which are in corresponding cooperation with the clamping hooks (2243), and the clamping hooks (2243) can move up and down in the clamping holes (2251).

11. The shaver according to claim 8, characterized in that A circumferential contour of the connecting head (2241) is in the shape of a star, and a sharp corner of the star is in abutment with an inner wall of the mounting cavity (2231).

12. The shaver according to claim 1, characterized in that The knife head structure (2) further comprises a protective cover (23), a tool rest assembly (24) and a tool seat assembly (25), the protective cover (23) is installed with a first magnetic part (26), the tool rest assembly (24) is installed with a second magnetic part (27), and the tool seat assembly (25) is installed with a third magnetic part (28), and upper and lower ends of the second magnetic part (27) are respectively adapted to be in attraction cooperation with the first magnetic part (26) and the third magnetic part (28).

13. The shaver according to claim 12, characterized in that The tool holder assembly (24) comprises a tool holder body (241) and a mounting frame (242) for mounting the second magnetic member (27) to the tool holder body (241); the mounting frame (242) is provided with a first accommodating cavity (2421) for mounting the second magnetic member (27), and an upper edge surface of the first accommodating cavity (2421) is in abutting connection with a lower surface of the tool holder body (241) to realize hidden arrangement of the second magnetic member (27) in the mounting frame (242).

14. The shaver according to claim 12, characterized in that The tool seat assembly (25) comprises a mounting seat (251) and a tool seat cover (252) connected to each other, the mounting seat (251) is provided with a second accommodating cavity (2511) for mounting the third magnetic member (28), and the tool seat cover (252) covers the mounting seat (251) to realize hidden arrangement of the third magnetic member (28) in the mounting seat (251).

15. The shaving razor of any of claims 1-14, wherein, The circuit board (6) is installed in the shell (11), the circuit board (6) is electrically connected with an indicator lamp (63) and an electrostatic induction member (64), and the circuit board (6) controls the indicator lamp (63) to emit light according to a human body electrostatic signal detected by the electrostatic induction member (64).

16. The shaving razor of claim 15, wherein, The electrostatic induction member (64) comprises an electrostatic receiving contact foot (641), one end of the electrostatic receiving contact foot (641) is exposed outside the shell (11); or the electrostatic induction member (64) comprises an electrostatic receiving contact foot (641), the material of the shell (11) is a conductive metal material, and the electrostatic receiving contact foot (641) is electrically connected with the shell (11).

17. The shaver of claim 15, wherein, The indicator lamp (63) is arranged in the shell (11), the shell (11) has a light transmission part (111), and the position of the indicator lamp (63) corresponds to the position of the light transmission part (111); the shell (11) comprises a shell body (112) and a shell upper cover (113) connected to the upper end of the shell body (112), and the light transmission part (111) is arranged on the shell upper cover (113); a switch knob (15) is arranged between the shell body (112) and the shell upper cover (113), and the light transmission part (111) is located above the switch knob (15).

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