A floating head shaver

Abstract

The utility model discloses a floating cutter head shaver, including fuselage and the cutter head of being located at the top of fuselage, there is power assembly in the fuselage output rotary driving force, and the cutter head includes shell head, inner blade and knife net, and the inner blade is driven to rotate shaving by power assembly, and can float up and down, the buckle connection of shell head is connected in the knife net frame, and the knife net frame has spherical recess, and the knife net includes spherical base body and net face part, and the spherical base body is suitable for the configuration in the spherical recess, and can universal deflection, and the floating support is installed on the knife net frame, and the floating support has annular base body and a plurality of elastic sheets, and the annular base body is opened long slot hole at the corresponding elastic sheet, and one end of elastic sheet is connected long slot hole hole wall, and the other end is inclined to the upper abutment spherical base body stop ring, and through the deformation of elastic sheet, the displacement of knife net deflection is adapted and resets, and the shell head cover is outside the knife net, and has the cutter lip that exposes net face part, and restricts the knife net to the spherical recess and separates upward. The shaver is through the up and down floating of inner blade, and the knife net universal deflection adapts the facial profile curved surface, and the knife net is more close to the skin when shaving, and the shaven cleanliness is improved.

Description

Technical Field

[0001] This utility model relates to the field of personal care device technology, specifically to a floating head shaver. Background Technology

[0002] Electric shavers, as a widely used personal care appliance in daily life, primarily function for trimming and grooming facial hair and beard. Currently, the core structure of electric shavers on the market typically consists of three key parts: the shaver head, the inner blades, and the outermost foil. In conventional designs, the foil is usually designed to float up and down. The main purpose of this floating mechanism is to compensate for any gaps that may exist between the foil and the high-speed rotating inner blades, ensuring that the inner blades and foil always maintain a close fit. This is the most basic mechanical requirement for effective beard trimming.

[0003] However, in this existing mainstream design, the blade's freedom of movement is significantly limited. It can only adjust up and down in a single dimension, unable to deflect at multiple angles. This structural limitation makes it difficult for the blade to fully adapt to the complex and diverse contours of a user's face. Specifically, when the razor needs to conform to areas with significant changes in shape, such as the jawline and neck, the fixed or only up-and-down blade cannot adaptively deflect its angle to follow the curves of the face. The direct consequence is that the blade cannot achieve close contact with the skin surface. On the one hand, in areas with protrusions or depressions, the blade may not reach the skin, resulting in ineffective shaving of the beard in those areas, creating shaving dead spots and leaving beard residue. On the other hand, in some areas, the rigid edges of the blade may excessively compress the skin, causing discomfort or even a slight stinging sensation. The poor fit between the blade and facial skin, and insufficient adaptability when dealing with complex facial contours, affects the thoroughness of the shave and the comfort of use. Utility Model Content

[0004] This invention addresses the technical problems of poor blade head fit and unsatisfactory shaving effect in existing shavers by providing a floating blade shaver with a blade mesh that can rotate in all directions, improving the fit between the blade mesh and the facial skin and reducing beard residue.

[0005] The technical solution of this utility model is as follows: A floating head shaver includes a body and a head disposed on the top of the body. The body is equipped with a power assembly that outputs rotational driving force. The head includes a shell, an inner blade, and a blade net covering the outside of the inner blade. The inner blade is driven to rotate by the power assembly to perform shaving operations, and the inner blade can be floated up and down.

[0006] The shell head is equipped with a blade mesh frame, which has a spherical cavity. The blade mesh includes a spherical base and a mesh surface on top of the spherical base. The spherical base is fitted into the spherical cavity and can rotate in any direction. A floating support is mounted on the blade mesh frame. The floating support includes an annular base and several elastic plates evenly distributed along the circumference of the annular base. The annular base has elongated slots corresponding to the positions of the elastic plates. One end of each elastic plate is fixedly connected to the wall of the corresponding elongated slot, and the other end extends upward at an angle and elastically abuts against the retaining ring of the spherical base. The blade mesh is adapted to the deflection displacement by the deformation of the elastic plates, and the blade mesh is reset by the elastic restoring force of the elastic plates. The shell head covers the outside of the blade mesh and has a blade edge for exposing the mesh surface. At the same time, the shell head restricts the blade mesh from detaching upward from the spherical cavity.

[0007] The above technical solution differs from conventional razor foils, which only have the ability to float up and down. This up-and-down movement is only used to compensate for the clearance between the inner blades during operation, maintaining the close contact between the blades and the foil to meet the basic conditions for beard trimming. Conventional structures do not have space to accommodate the foil's movement, and the foil's offset range is extremely small, making it unable to adapt well to the curved contours of the face.

[0008] This application features a spherical cavity in the blade holder, which, together with the spherical base of the blade, forms a spherical guide structure, giving the blade omnidirectional deflection capability. When the blade is subjected to an oblique force while in contact with the face, it will rotate at a regular angle based on the spherical fit, deflecting in any direction. It can change its tilt posture according to the facial contours, fully conforming to the curves and angles of the face, effectively reducing beard residue. Furthermore, the blade can float downwards to fit against the inner blade, ensuring that the inner blade remains in contact with the blade even after deflection. Simultaneously, a floating support is installed at the blade holder. The floating support adopts a ring-shaped base structure, with elastic sheets arranged circumferentially around the ring base, allowing the supporting force to be evenly distributed. The long slots in the annular base, located at the bottom circumferential position of the blade net, provide deformation avoidance space for the elastic sheets. Each elastic sheet is inclined upward and abuts against the retaining ring of the blade net's shaped base. When the blade net deflects, the elastic sheet on one side of the deflection direction is compressed and undergoes elastic deformation, while the elastic sheet on the other side extends with the deflection displacement. The blade net adapts to the deflection action by relying on the different degrees of deformation of each elastic sheet. When the force on the blade net disappears after deflection, the elastic restoring force of the elastic sheet itself can drive the blade net to automatically return to the center position, ensuring that it can properly adapt to the contour in the next use. The structure is simple and reliable. At the same time, the shell head can play an upper limiting role for the blade net, preventing the blade net from coming out of the spherical cavity during the force process, ensuring the stability of the overall assembly structure.

[0009] This structure compensates for the gap by having the inner blade float up and down, ensuring that the inner blade always fits snugly against the foil to complete the cut. At the same time, the foil can rotate in all directions to adapt to the facial contours and adjust its angle accordingly. With the help of the elastic plate, it can automatically reset, allowing the foil to continuously and closely fit the skin curves of different areas, avoiding dead angles and effectively improving shaving cleanliness and user comfort.

[0010] A further feature of this invention is as follows: the retaining ring is fixed or integrally provided on the outer periphery of the upper end of the spherical base, and the retaining ring is exposed above the spherical cavity; the lower part of the spherical base is adapted to be accommodated in the spherical cavity; the shell head abuts against the upper end face of the retaining ring to restrict the blade mesh from detaching from the spherical cavity upward; the floating support is provided between the upper end face of the blade mesh frame and the lower end face of the retaining ring.

[0011] By further configuring the above-mentioned design, the retaining ring is positioned on the outer periphery of the spherical base. The shell head presses against the upper surface of the retaining ring, precisely preventing the blade from detaching from the spherical cavity and further stabilizing the blade assembly position. Simultaneously, a floating support is arranged between the upper surface of the blade holder and the lower surface of the retaining ring, allowing the elastic plate to stably abut against and support the retaining ring. This determines the force support point of the elastic plate, ensuring that the supporting force of the elastic plate can directly act on the entire blade, guaranteeing uniform force distribution when the blade deflects and preventing unilateral offset and jamming. It also limits the vertical floating stroke of the blade, maintaining the normal fit between the blade and the blade.

[0012] A further feature of this invention is that the elastic sheet has a fixed section, a bending section, and a top abutment section. The fixed section is fixed to the wall of the long slot, the top abutment section supports and abuts against the lower end face of the retaining ring, and the bending section has a multi-bending structure with its two ends connected to the fixed section and the top abutment section, respectively.

[0013] By further configuring the elastic sheet as described above, a three-section structure is formed: a fixed section, a bending section, and a top-stop section. The fixed section ensures stable fixation of the elastic sheet, the top-stop section guarantees reliable contact and support with the retaining ring, and the bending section, formed by multiple bends, possesses stronger deformation capacity and buffering performance. The bending section can adapt to different degrees of displacement of the blade net, whether it is a small or large deflection. Compared to ordinary straight elastic sheets, the multiple-bending structure has higher deformation tolerance, can continuously and stably provide support and reset force for the blade net, slows down the fatigue aging rate of the elastic structure, and maintains the blade net's deflection and reset performance for a long time.

[0014] A further feature of this invention is as follows: the cutter head is provided, and the shell of the cutter head is screwed onto the top of the machine body. The shell and the machine body are respectively provided with a locking block and a locking groove. The locking groove has a connected insertion port and a locking slot. The inner wall of the locking slot is provided with a locking protrusion. The locking block can slide into the insertion port axially. Rotating the shell head can cause the locking block to rotate into the locking slot to form an axial limit. The locking protrusion on the locking slot engages with the locking block to form a circumferential anti-disengagement limit.

[0015] By employing the aforementioned further design, an axial sliding fit and circumferential screw-in locking assembly method is used to connect the single cutter head housing to the machine body. The housing assembly operation is simple and easy to disassemble and clean. After the locking block enters the bayonet slot, it can limit the axial position, preventing the housing head from axially detaching. Combined with the locking protrusions on the inner wall of the bayonet slot, it can form a circumferential locking restriction on the locking block, preventing the housing head from rotating and loosening under external force during use. The overall locking structure ensures the structural stability of the single cutter head after assembly, preventing housing head shaking or displacement during use and ensuring stable working position of the cutter head.

[0016] A further feature of this invention is that the powertrain includes a drive motor, and the inner blade of the cutter head is driven and linked with the output shaft of the drive motor.

[0017] With the above-mentioned further configuration, the inner blade of one shaving head is connected to the output shaft of the drive motor for power transmission, eliminating intermediate transmission components and simplifying the overall power structure layout. The shorter power transmission path reduces power loss during transmission, ensuring that the motor output power can directly act on the inner blade, resulting in a faster blade response. It also reduces the probability of wear on transmission components, lowers the chance of malfunctions, and maintains the inner blade's uniform and stable rotation to complete the shaving operation.

[0018] A further feature of this invention is as follows: multiple cutter heads are provided, and the shells of multiple cutter heads are snapped onto the main shell. The main shell is screwed onto the top of the machine body. The main shell and the machine body are respectively provided with a locking block and a locking groove. The locking groove has a connected insertion port and a locking slot. The inner wall of the locking slot is provided with a locking protrusion. The locking block can slide into the insertion port axially. Rotating the main shell can cause the locking block to rotate into the locking slot to form an axial limit. The locking protrusion on the locking slot engages with the locking block to form a circumferential anti-disengagement limit.

[0019] With the above-mentioned further design, multiple sets of shaving heads are uniformly assembled on the main housing, enabling simultaneous shaving operations with multiple heads, increasing the shaving coverage area, and improving overall shaving efficiency. The main housing and the body use a screw-on locking structure with a connector and a snap-fit, making the assembly of the main housing simple and easy to disassemble and clean.

[0020] A further feature of this invention is that the powertrain includes a drive motor, a transmission gear, and multiple output gears. The transmission gear is linked to the output shaft of the drive motor, and the multiple output gears are directly or indirectly meshed with the transmission gear. Each output gear is provided with a transmission shaft, and each transmission shaft is linked to the inner blade of the corresponding cutter head.

[0021] By further configuring the aforementioned system, a gear transmission mechanism is formed by combining transmission gears with multiple sets of output gears. The power output from the drive motor is distributed to each output gear via the transmission gears, synchronously driving multiple transmission shafts to rotate, thereby driving the internal blades inside each cutter head to rotate. This gear meshing transmission method offers strong power transmission capacity and smooth operation, ensuring that multiple internal blades maintain a stable and synchronous rotational speed, avoiding inconsistent cutter head rotation speeds. Simultaneously, the direct or indirect meshing transmission method adapts to the layout requirements of multiple cutter heads, rationally distributing power and meeting the power supply needs of multiple cutter heads operating simultaneously. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a single cutter head in a specific embodiment of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of a single cutter head in a specific embodiment of this utility model;

[0024] Figure 3 This is a schematic diagram of the upper part of the body of a specific embodiment of the present utility model;

[0025] Figure 4 This is a schematic diagram of the bottom surface structure of a single cutter head in a specific embodiment of this utility model;

[0026] Figure 5 This is a schematic diagram of the shell surface structure of a single cutter head in a specific embodiment of this utility model;

[0027] Figure 6 This is a schematic diagram of the knife frame structure according to a specific embodiment of the present utility model;

[0028] Figure 7 This is a schematic diagram of the elastic sheet structure of a specific embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the mesh and inner blade assembly structure of a specific embodiment of this utility model;

[0030] Figure 9 This is a schematic diagram of the structure of multiple cutter heads in a specific embodiment of this utility model;

[0031] Figure 10 for Figure 9 A schematic diagram of the powertrain structure.

[0032] In the diagram: 1. Body; 2. Blade head; 21. Shell head; 21. Blade edge; 3. Power assembly; 31. Drive motor; 31. Output shaft; 32. Transmission gear; 33. Output gear; 34. Transmission shaft; 32. Inner blade; 23. Blade mesh; 231. Spherical base; 232. Mesh surface; 2311. Retaining ring; 24. Blade mesh frame; 241. Spherical cavity; 25. Floating support; 26. Floating spring; 251. Annular base; 2511. Long slot; 2521. Elastic sheet; 2521. Fixed section; 2522. Bending section; 2523. Top abutment section; 9. Locking block; 10. Locking groove; 101. Insert; 102. Locking protrusion; 103. Overall shell; 11. Detailed Implementation

[0033] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] like Figure 1-10 As shown, this utility model discloses a floating head shaver, including a body 1 and a shaver head 2 mounted on the top of the body 1. The body 1 is equipped with a power assembly 3 that outputs rotational driving force. The shaver head 2 includes a shell head 21, an inner blade 22, and a blade net 23 covering the outer side of the inner blade 22. The inner blade 22 is driven to rotate by the power assembly 3 to perform shaving operations. The inner blade 22 is supported by a conventional floating spring 26 structure to achieve up-and-down floating. The shaver head is a detachable structure, and the body 1 is also a conventional detachable structure. It is equipped with a charging interface and can have a built-in rechargeable battery to power the power assembly 3.

[0035] The shell head 21 is equipped with a blade mesh frame 24, which is connected to the shell head by screws or clips. The clip connection is a conventional design, usually with claws on the outer wall of the blade mesh frame. The claws pass through corresponding holes in the shell head and then snap on to secure the connection. This design allows for convenient assembly and disassembly and provides a stable connection structure. The blade mesh frame 24 has a spherical cavity 241. The blade mesh 23 includes a spherical base 231 and a mesh surface 232 located above the spherical base 231. The mesh surface has evenly distributed mesh holes for the beard to enter. The spherical base 231 is fitted into the spherical cavity 241 and can be deflected in any direction. Turn; The knife frame 24 is equipped with a floating support 25 by screws or clips, etc. The floating support 25 includes an annular base 251 and a plurality of elastic plates 252 evenly distributed around the annular base 251. The floating support is an annular base structure. The annular base 251 has elongated slots 2511 corresponding to the positions of each elastic plate 252. One end of each elastic plate 252 is integrally fixed to the wall of the corresponding elongated slot 2511, and the other end extends obliquely upward and elastically abuts against the retaining ring 2311 of the spherical base 231. Specifically, the elastic plate 252 52 has a fixed section 2521, a bent section 2522, and a top abutment section 2523. The fixed section 2521 is fixed to the wall of the long slot 2511. The top abutment section 2523 supports and abuts against the lower end face of the retaining ring 2311. The bent section 2522 has a multi-bending structure, and its two ends are integrally connected to the fixed section 2521 and the top abutment section 2523 respectively. The elastic sheet 252 deforms to adapt to the deflection displacement of the blade mesh 23, and the elastic restoring force of the elastic sheet 252 is used to realize the reset of the blade mesh 23. The shell head 21 covers the outside of the blade mesh 23 and has a blade edge 2 for exposing the mesh surface 232. 11. Simultaneously, the shell head 21 restricts the blade mesh 23 from detaching upwards from the spherical cavity 241. Specifically, the retaining ring 2311 is fixed or integrally provided on the outer periphery of the upper end of the spherical base 231, and the retaining ring 2311 is exposed above the spherical cavity 241. The lower part of the spherical base 231 is adapted to be accommodated within the spherical cavity 241. The shell head 21 abuts against the upper end face of the retaining ring 2311 to restrict the blade mesh 23 from detaching upwards from the spherical cavity 241. The floating support 25 is located between the upper end face of the blade mesh frame 24 and the lower end face of the retaining ring 2311, so that the elastic sheet can stably provide elastic support to the retaining ring. The bent section of the elastic sheet has multiple deformation areas due to its multiple bending structure. Compared with a straight elastic sheet, it can adapt to different deflection amplitudes of the blade mesh. Whether the blade mesh swings slightly or deflects in a large omnidirectional direction, the bent section can generate corresponding deformation to adapt to the displacement, while continuously providing stable support and restoring elasticity.

[0036] This product comes in two implementation forms: a single-head assembly structure and a multi-head assembly structure.

[0037] Example 1: The device adopts a single-blade layout structure, with one blade 2. The shell 21 of the blade 2 is screwed onto the top of the body 1. The shell 21 and the body 1 are respectively provided with a locking block 9 and a locking groove 10. Specifically, the locking block is located on the inner wall of the lower end of the shell 21, and the locking groove 10 is located on the outer periphery of the upper end of the body 1. Of course, the positions of the locking block and the locking groove can be interchanged, and multiple locking blocks and locking grooves are provided along the circumference. The locking groove 10 has a connected insertion port 101 and a locking slot 102 for insertion. The opening is axially positioned, and the bayonet is circumferentially positioned. A locking protrusion 103 is integrally formed on the inner wall of the bayonet 102. During installation, the locking block 9 can slide axially into the insertion port 101. Rotating the housing head 21 allows the locking block 9 to rotate into the bayonet 102, forming an axial limit, i.e., limiting the vertical direction. After the housing head 21 is rotated into position, the locking protrusion on the bayonet engages with the side of the locking block to achieve a circumferential anti-detachment limit, preventing the housing head from rotating and loosening due to external forces during use, ensuring structural stability after single-blade assembly. In this embodiment, the power assembly 3 includes a drive motor 31. The inner blade 22 of the blade head 2 is driven and linked to the output shaft 311 of the drive motor 31. The motor's operation directly drives the inner blade to rotate. The blade head as a whole relies on the locking block, locking groove, and locking protrusion to complete the screw-lock assembly. The axial sliding limit combined with the circumferential locking limit ensures that the blade head will not loosen or fall off after assembly, ensuring structural stability during blade head operation. If the cutter head needs to be cleaned and maintained, rotate the housing head in the opposite direction to disengage the locking block from the slot and slide it out of the insertion port, then the cutter head can be completely disassembled and removed.

[0038] Example 2: The equipment adopts a multi-blade layout structure, with multiple sets of blades 2, and the shells 21 of multiple blades 2 are snapped onto the main shell 11. The main shell 11 is screwed onto the top of the machine body 1. The main shell 11 and the machine body 1 are respectively provided with a locking block 9 and a locking groove 10. Specifically, the locking block is located on the inner wall of the lower end of the main shell 11, and the locking groove 10 is located on the outer periphery of the upper end of the machine body 1. Of course, the locking block and the locking groove can also be interchanged, and multiple locking blocks and locking grooves are provided along the circumference; the locking groove 1 The 0 also has a connected insertion port 101 and a bayonet 102. The insertion port is set along the axial direction and the bayonet is set along the circumferential direction. A locking protrusion 103 is integrally provided on the inner wall of the bayonet 102. During installation, the locking block 9 can slide into the insertion port 101 along the axial direction. Rotating the main housing 11 will allow the locking block 9 to be rotated into the bayonet 102 to form an axial limit. After being rotated into place, the locking protrusion will also lock into the side of the locking block to form a circumferential anti-disengagement limit. The disassembly and assembly are convenient, and at the same time, it can ensure the structural stability of the main housing after assembly and will not loosen on its own during use. The power assembly 3 in this embodiment includes a drive motor 31, a transmission gear 32, and multiple output gears 33. The transmission gear 32 is linked to the output shaft 311 of the drive motor 31. The multiple output gears 33 are directly or indirectly meshed with the transmission gear 32. Each output gear 33 is fixedly or integrally provided with a transmission shaft 34. Each transmission shaft 34 passes through and is linked with the inner blade 22 of the corresponding shaving head 2. The power output by the drive motor can synchronously drive the multiple inner blades to rotate after being split by the gears, so as to realize the synchronous shaving operation of multiple heads.

[0039] The specific working principle is as follows:

[0040] After the device is powered on, the powertrain starts running, driving the inner blades to rotate and cut. During shaving: the foil conforms to the skin of the face. Different areas of the face have different curvatures. When subjected to facial pressure, the spherical base of the foil deflects in all directions based on the spherical cavity, thus adapting to the contours of the face. When the foil deflects, it presses down on the retaining ring, which applies pressure to the elastic plate below. The elastic plate deforms under the pressure, thus adapting to the amount of deflection displacement of the foil. When the shaving head moves to a flat area of ​​the face or leaves the face, the pressure on the foil disappears, and the deformed elastic plate rebounds and returns to its original position, simultaneously pushing the retaining ring and the entire foil back to their initial assembly posture. At the same time, the shell head always provides an upper limit to the retaining ring, preventing the foil from detaching from its assembly position throughout the process.

[0041] The single-blade head model relies on a direct-drive motor to rotate the blade, resulting in direct and efficient power transmission; the multi-blade head model distributes power through a gear meshing structure, enabling multiple blades to rotate synchronously.

[0042] It should be noted that in the description of this utility model, all directional indicators (such as up, down, forward, backward, etc.) are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0043] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A floating head shaver, comprising a body (1) and a shaver head (2) disposed on the top of the body (1), wherein the body (1) is equipped with a power assembly (3) that outputs rotational driving force, and the shaver head (2) comprises a housing (21), an inner blade (22), and a foil (23) covering the outer side of the inner blade (22), wherein the inner blade (22) is driven to rotate by the power assembly (3) to perform shaving operations, and the inner blade (22) can be floated up and down; characterized in that: The shell head (21) is equipped with a blade mesh frame (24), which has a spherical cavity (241). The blade mesh (23) includes a spherical base (231) and a mesh surface (232) above the spherical base (231). The spherical base (231) is adapted to be housed in the spherical cavity (241) and can be deflected in any direction. A floating support (25) is mounted on the blade mesh frame (24). The floating support (25) includes an annular base (251) and a plurality of elastic plates (252) evenly distributed along the circumference of the annular base (251). The annular base (251) has corresponding elastic plates (252) on each elastic plate. The positions of the elastic plates (252) are respectively provided with long slots (2511). One end of each elastic plate (252) is fixedly connected to the hole wall of the corresponding long slot (2511), and the other end extends upward at an angle and elastically abuts against the retaining ring (2311) of the spherical base (231). The elastic plate (252) deforms to adapt to the deflection displacement of the blade net (23), and the blade net (23) is reset by relying on the elastic restoring force of the elastic plate (252). The shell head (21) is covered on the outside of the blade net (23) and has a blade edge (211) for the mesh surface (232) to be exposed. At the same time, the shell head (21) restricts the blade net (23) from moving upward away from the spherical cavity (241).

2. The floating head shaver according to claim 1, characterized in that: The retaining ring (2311) is fixed or integrally provided on the outer periphery of the upper end of the spherical base (231), and the retaining ring (2311) is exposed above the spherical cavity (241). The lower part of the spherical base (231) is adapted to be contained in the spherical cavity (241). The shell head (21) abuts against the upper end face of the retaining ring (2311) to restrict the blade net (23) from detaching upward from the spherical cavity (241). The floating support (25) is provided between the upper end face of the blade net frame (24) and the lower end face of the retaining ring (2311).

3. The floating head shaver according to claim 1, characterized in that: The elastic sheet (252) has a fixed section (2521), a bent section (2522) and a top abutment section (2523). The fixed section (2521) is fixed to the wall of the long slot (2511). The top abutment section (2523) supports and abuts against the lower end face of the retaining ring (2311). The bent section (2522) has a multiple bending structure and its two ends are respectively connected to the fixed section (2521) and the top abutment section (2523).

4. The floating head shaver according to claim 1, 2, or 3, characterized in that: The cutter head (2) is provided, and the shell head (21) of the cutter head (2) is screwed onto the top of the machine body (1). The shell head (21) and the machine body (1) are respectively provided with a locking block (9) and a locking groove (10). The locking groove (10) has a connected insertion port (101) and a locking slot (102). The inner wall of the locking slot (102) is provided with a locking protrusion (103). The locking block (9) can slide into the insertion port (101) axially. By rotating the shell head (21), the locking block (9) can be rotated into the locking slot (102) to form an axial limit. The locking protrusion (103) on the locking slot (102) engages with the locking block (9) to form a circumferential anti-disengagement limit.

5. The floating head shaver according to claim 4, characterized in that: The powertrain (3) includes a drive motor (31), and the inner blade (22) of the cutter head (2) is driven and linked with the output shaft (311) of the drive motor (31).

6. The floating head shaver according to claim 1, 2, or 3, characterized in that: The cutter head (2) is provided in multiple ways, and the shell head (21) of the multiple cutter heads (2) is snapped to the main shell (11). The main shell (11) is screwed on the top of the machine body (1). The main shell (11) and the machine body (1) are respectively provided with a locking block (9) and a locking groove (10). The locking groove (10) has a connected insertion port (101) and a locking slot (102). The inner wall of the locking slot (102) is provided with a locking protrusion (103). The locking block (9) can slide into the insertion port (101) axially. Rotating the main shell (11) will cause the locking block (9) to rotate into the locking slot (102) to form an axial limit. The locking protrusion (103) on the locking slot (102) engages with the locking block (9) to form a circumferential anti-disengagement limit.

7. The floating head shaver according to claim 6, characterized in that: The powertrain (3) includes a drive motor (31), a transmission gear (32) and multiple output gears (33). The transmission gear (32) is linked with the output shaft (311) of the drive motor (31). The multiple output gears (33) are directly or indirectly meshed with the transmission gear (32). Each output gear (33) is provided with a transmission shaft (34). Each transmission shaft (34) is connected to the inner blade (22) of the corresponding cutter head (2) for transmission linkage.

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