Tool bit structure and hair trimmer

Abstract

The utility model discloses a tool bit structure and a hair trimmer with the tool bit structure. The tool bit structure comprises a shell, a driving shaft and a tool bit mechanism. The driving shaft is arranged in the shell through a first fixing frame, the first fixing frame is erected on an opening in one end of the shell and located in a cavity of the shell, and the driving shaft is rotatably arranged on the first fixing frame in a penetrating mode; the tool bit mechanism is arranged on an opening in one end of the shell and connected with the shell, the tool bit mechanism is connected with one end of the driving shaft, the first fixing frame is located on the inner side of the tool bit mechanism, and the driving shaft drives a movable cutter in the tool bit mechanism to rotate. A driving shaft of the hair trimmer is arranged in a shell through a first fixing frame, a cutter head mechanism is connected to one end of the driving shaft, the driving shaft can drive a movable cutter of the cutter head mechanism to rotate, and the first fixing frame is arranged in a cavity of the shell and located on the inner side of the cutter head mechanism, so that the cutter head mechanism can be conveniently detached from the shell; therefore, the interior of the hair trimmer can be cleaned conveniently or the movable cutter structure of the cutter head mechanism can be replaced conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of personal care products, and particularly relates to a cutter head structure and a hair trimmer. Background Art

[0002] An electric shaver is a daily necessity for many men. After long-term use, the moving blade of the shaver will become dull due to long-term use, or the cutter head structure inside the shaver needs to be cleaned, so the cutter head structure of the shaver needs to be removed. In some current shavers, the fixing structure of the moving blade shaft is arranged in the cutter head structure, making it difficult to disassemble the cutter head structure. Moreover, the fixing structure also occupies the space for arranging the moving blade and the stationary blade, reducing the trimming range of the cutter head structure, thus resulting in a poor user experience. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a cutter head structure that can quickly disassemble part of the cutter head structure, facilitating the cleaning of the inside of the cutter head structure or the replacement of parts of the cutter head structure.

[0004] The utility model also provides a hair trimmer with the above-mentioned cutter head structure.

[0005] According to the cutter head structure of the first aspect embodiment of the utility model, the cutter head structure includes:

[0006] A housing;

[0007] A drive shaft, which is arranged in the housing through a first fixing frame. The first fixing frame is erected on the open end of the housing and is located in the cavity of the housing. The drive shaft is rotatably arranged on the first fixing frame; and

[0008] A cutter head mechanism, which is arranged on the open end of the housing and connected to the housing. The cutter head mechanism is connected to one end of the drive shaft. The first fixing frame is located inside the cutter head mechanism, and the drive shaft drives the moving blade in the cutter head mechanism to rotate.

[0009] According to the cutter head structure of the embodiment of the utility model, it has at least the following beneficial effects: the drive shaft is arranged in the housing through the first fixing frame, and the cutter head mechanism is connected to one end of the drive shaft. The drive shaft can drive the moving blade of the cutter head mechanism to rotate. The first fixing frame is arranged in the cavity of the housing and is located inside the cutter head mechanism, so that the cutter head mechanism can be easily disassembled from the housing, facilitating the cleaning of the inside of the cutter head mechanism or the replacement of the moving blade structure of the cutter head mechanism.

[0010] According to some embodiments of the present utility model, the first fixing bracket includes a limiting portion and a fixing portion. The fixing portion is disposed outside the limiting portion. The limiting portion is sleeved outside the driving shaft, and an outer edge of the fixing portion is connected to one end of an opening of the housing.

[0011] According to some embodiments of the present utility model, the cutter head mechanism includes a cutter head assembly and a fixing assembly. The cutter head assembly is respectively disposed on an opening at one end of the housing and connected to the driving shaft through the fixing assembly.

[0012] According to some embodiments of the present utility model, the cutter head assembly includes a moving cutter member and a stationary cutter member. The fixing assembly includes a first fixing member and a second fixing member. The moving cutter member is connected to one end of the driving shaft through the first fixing member, and the stationary cutter member is detachably connected to the housing through the second fixing member.

[0013] According to some embodiments of the present utility model, the moving cutter member includes a first moving cutter and a second moving cutter. The first moving cutter and the second moving cutter are distributed along a radial direction of the driving shaft. The stationary cutter member includes a first stationary cutter and a second stationary cutter. The first moving cutter is correspondingly disposed with the first stationary cutter, and the second moving cutter is correspondingly disposed with the second stationary cutter.

[0014] According to some embodiments of the present utility model, the first stationary cutter and the second stationary cutter are connected through a stationary cutter connecting frame. The stationary cutter connecting frame includes an upper fixing ring and a lower fixing ring. An edge where the first stationary cutter and the second stationary cutter are connected is clamped in an annular groove of the lower fixing ring through the upper fixing ring.

[0015] According to some embodiments of the present utility model, a cutter thickness of the first stationary cutter is greater than a cutter thickness of the second stationary cutter.

[0016] According to some embodiments of the present utility model, the first moving cutter and the second moving cutter are respectively fixed on the first fixing member. The first fixing member is provided with a positioning post and a fixing post. The first moving cutter is provided with a mounting hole, and the second moving cutter is provided with an elastic piece. The first moving cutter is clamped with the first fixing member through the positioning post, and the second moving cutter is fixed in the mounting hole through the elastic piece and the fixing post.

[0017] According to some embodiments of the present utility model, the second fixing member includes:

[0018] A cover body, the cover body is detachably covered on an opening at one end of the housing; and

[0019] A second fixing bracket, which is clamped with the cover body, and the outer edge of the fixed knife member is clamped between the cover body and the second fixing bracket.

[0020] According to some embodiments of the present invention, the cover body is connected to the outer shell by a magnetic attraction method.

[0021] According to the hair clipper of the second aspect embodiment of the present invention, the hair clipper includes the cutter head structure described in any one of the above embodiments.

[0022] According to the hair clipper of the embodiment of the present invention, it has at least the following beneficial effects: the driving shaft of the hair clipper is arranged in the outer shell through the first fixing bracket, the cutter head mechanism is connected to one end of the driving shaft, and the driving shaft can drive the moving knife of the cutter head mechanism to rotate. And the first fixing bracket is arranged in the cavity of the outer shell and is located inside the cutter head mechanism, so that it is convenient for the cutter head mechanism to be disassembled from the outer shell, so as to facilitate cleaning the inside of the hair clipper or replacing the structural parts of the cutter head mechanism of the hair clipper.

[0023] According to some embodiments of the present invention, the hair clipper includes a floating structure, the cutter head structure is arranged on the outer shell through the floating structure, the floating structure is arranged in the outer shell and sleeved on the outer peripheral side of the driving shaft, and the first fixing bracket is located outside the floating structure.

[0024] According to some embodiments of the present invention, the outer shell includes a first shell, the outer edge of the first fixing bracket is arranged on the first shell, the floating structure includes a first frame body and a second frame body, the first frame body and the second frame body are connected by a plurality of elastic sheets, and the plurality of elastic sheets are evenly distributed at intervals along the circumferential direction of the first frame body, and the first frame body is arranged on the first shell;

[0025] The outer shell further includes:

[0026] A second shell, which is arranged on the outer peripheral side of the first shell; and

[0027] A third shell, which is arranged on the inner side of the first shell, the second frame body is arranged in the third shell, and the first shell can float between the second shell and the third shell through the floating structure.

[0028] According to some embodiments of the present invention, the diameter of the first frame body is larger than the diameter of the second frame body, and the elastic sheet is bent towards the axis of the driving shaft.

[0029] According to some embodiments of the present utility model, the inner side of the second housing has a spherical inner wall, the outer side of the third housing has a spherical outer wall, both the inner and outer sides of the first housing have mating spherical walls, the spherical walls respectively mate with the spherical inner wall and the spherical outer wall, and the first housing can move between the second housing and the third housing.

[0030] According to some embodiments of the present utility model, the hair clipper further includes a cutter pressing structure, and the other end of the drive shaft is connected to a drive source through the cutter pressing structure.

[0031] According to some embodiments of the present utility model, the cutter pressing structure includes:

[0032] A universal shaft sleeve, one end of the universal shaft sleeve is connected to one end of the drive shaft, an elastic member is arranged in the universal shaft sleeve, one end of the elastic member sleeves one end of the drive shaft and abuts against the inner wall of the universal shaft sleeve; and

[0033] A universal shaft, one end of the universal shaft is movably arranged in the universal shaft sleeve along the axial direction, the other end of the elastic member abuts against the end of one end of the universal shaft, and the other end of the universal shaft is connected to the drive source.

[0034] According to some embodiments of the present utility model, the hair clipper further includes a face cover, the face cover can be covered on the outside of the first fixing frame, the center of the face cover is sleeved on the first fixing frame, and the outer edge of the face cover is arranged on the housing.

[0035] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0037] Figure 1 is a schematic diagram of the hair clipper according to the second aspect embodiment of the present utility model;

[0038] Figure 2 is Figure 1 a half-sectional schematic diagram of the shown hair clipper;

[0039] Figure 3 is Figure 2 a half-sectional axonometric schematic diagram of the shown hair clipper;

[0040] Figure 4 is Figure 2 a schematic diagram of the first fixing frame of the shown hair clipper;

[0041] Figure 5 For Figure 3 Schematic diagram of the cooperation between the fixed knife member and the second fixed member of the hair trimmer shown;

[0042] Figure 6 For Figure 1 Schematic diagram of a partial structure of the hair trimmer shown (the fixed knife member and the second fixed member are omitted);

[0043] Figure 7 For Figure 1 Explosion schematic diagram of the cutter head structure of the hair trimmer shown;

[0044] Figure 8 For Figure 1 Explosion schematic diagram of the floating structure of the hair trimmer shown;

[0045] Figure 9 For Figure 1 Schematic diagram of the hair trimmer in the floating state shown.

[0046] Reference numerals:

[0047] Housing 10; first housing 11; second housing 12; third housing 13;

[0048] Drive shaft 20; first fixing bracket 21; limiting portion 211; fixing portion 212;

[0049] Cutter head mechanism 30; cutter head assembly 31; moving knife member 311; first moving knife 3111; mounting hole 3111a; second moving knife 3112; elastic piece 3112a; fixed knife member 312; first fixed knife 3121; second fixed knife 3122; fixed knife connecting frame 313; upper fixing ring 3131; lower fixing ring 3132; annular groove 3132a; fixing component 32; first fixing member 321; positioning post 3211; fixing post 3212; second fixing member 322; cover body 3221; second fixing bracket 3222;

[0050] Floating structure 40; first frame body 41; second frame body 42; elastic piece 43;

[0051] Knife pressing structure 50; universal shaft sleeve 51; elastic member 52; universal shaft 53;

[0052] Face cover 60. Detailed implementation manners

[0053] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0054] In the description of the present utility model, it should be understood that with respect to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0055] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0056] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0057] Refer to Figures 1 to 4 , according to the cutter head structure of the first aspect embodiment of the present utility model, the cutter head structure includes a housing 10, a drive shaft 20, and a cutter head mechanism 30. The drive shaft 20 is disposed in the housing 10 through a first fixing bracket 21. The first fixing bracket 21 is erected on the open end of the housing 10 and is located in the cavity of the housing 10. The drive shaft 20 is rotatably disposed through the first fixing bracket 21. The cutter head mechanism 30 is disposed on the open end of the housing 10 and is connected to the housing 10. The cutter head mechanism 30 is connected to one end of the drive shaft 20. The first fixing bracket 21 is located inside the cutter head mechanism 30, and the drive shaft 20 drives the moving cutter in the cutter head mechanism 30 to rotate.

[0058] Specifically, the outer shell 10 serves as the main support part of the cutter head structure and has the function of accommodating and protecting internal components. One end of the outer shell 10 is provided with an opening for installing and exposing the cutter head mechanism 30 for shaving or trimming operations. The drive shaft 20 is the core component for transmitting power. It is stably arranged in the cavity of the outer shell 10 through the first fixing bracket 21. One end of the drive shaft 20 is connected to the cutter head mechanism 30, and the other end is connected to an external power source (such as a motor) to achieve rotational motion. The first fixing bracket 21 is an important support structure. It is erected on the opening at one end of the outer shell 10 and is located in the cavity of the outer shell 10. The design of the first fixing bracket 21 ensures that the drive shaft 20 can pass through it stably and rotatably. At the same time, it also plays a role in separating the internal space of the outer shell 10 and supporting the cutter head mechanism 30. The cutter head mechanism 30 is the key part for performing shaving or trimming functions. It is arranged on the opening at one end of the outer shell 10 and is tightly connected to the outer shell 10. The cutter head mechanism 30 contains a moving cutter inside, and the moving cutter is connected to one end of the drive shaft 20. When the drive shaft 20 rotates, it drives the moving cutter to rotate together, thereby achieving the effect of shaving or trimming.

[0059] In the specific implementation process, the outer shell 10 can be made of strong and durable materials such as metal or plastic to ensure its structural strength and stability. The connection between the drive shaft 20 and the first fixing bracket 21 can adopt a rotational support structure such as a bearing to reduce friction and improve rotational efficiency. The connection between the cutter head mechanism 30 and the outer shell 10 can adopt methods such as threaded connection, snap connection, or adhesion to ensure the firmness and tightness of the connection. The design of the moving cutter can be varied in multiple ways according to actual needs. For example, multiple blades can be combined to improve the shaving or trimming effect and efficiency.

[0060] Furthermore, it can also be understood that the cutter head structure according to the embodiment of the present utility model has at least the following beneficial effects: The drive shaft 20 is arranged in the outer shell 10 through the first fixing bracket 21, and the cutter head mechanism 30 is connected to one end of the drive shaft 20. The drive shaft 20 can drive the moving cutter of the cutter head mechanism 30 to rotate. The first fixing bracket 21 is arranged in the cavity of the outer shell 10 and is located inside the cutter head mechanism 30, so that it is convenient to disassemble the cutter head mechanism 30 from the outer shell 10, which is convenient for cleaning the inside of the cutter head mechanism 30 or replacing the moving cutter structure of the cutter head mechanism 30.

[0061] Specifically, referring to Figures 2 to 4, in some embodiments of the present utility model, the first fixing bracket 21 includes a limiting portion 211 and a fixing portion 212. The fixing portion 212 is disposed outside the limiting portion 211. The limiting portion 211 is sleeved outside the driving shaft 20, and the outer edge of the fixing portion 212 is connected to one end of the opening of the housing 10. In the specific implementation manner of the present utility model, the first fixing bracket 21 is further designed to include two parts, namely, a limiting portion 211 and a fixing portion 212. The main function of the limiting portion 211 is to be sleeved outside the driving shaft 20 to position and limit the driving shaft 20, ensuring that it can rotate stably at a specified position. The fixing portion 212 is disposed outside the limiting portion 211, and its outer edge is tightly connected to one end of the opening of the housing 10, thereby firmly mounting the first fixing bracket 21 on the housing 10. Such a design not only enhances the overall stability of the cutter head structure but also ensures that the driving shaft 20 can maintain an accurate position and angle during rotation, thereby improving the precision and effect of shaving or trimming.

[0062] Referring to Figure 3 and Figures 5 to 8 , in some embodiments of the present utility model, the cutter head mechanism 30 includes a cutter head assembly 31 and a fixing assembly 32. The cutter head assembly 31 is respectively disposed on one end opening of the housing 10 and connected to the driving shaft 20 through the fixing assembly 32. In the specific implementation manner of the present utility model, the cutter head mechanism 30 is designed to include two parts, namely, a cutter head assembly 31 and a fixing assembly 32. The cutter head assembly 31 is the key part for performing shaving or trimming functions, and it includes core components such as a moving cutter. The fixing assembly 32 plays a role in stably mounting the cutter head assembly 31 on one end opening of the housing 10 and ensuring its firm connection with the driving shaft 20. Through such a design, the cutter head mechanism 30 can accurately perform shaving or trimming operations driven by the driving shaft 20 while maintaining the stability and durability of the structure.

[0063] Further, referring to Figure 3 and Figures 5 to 8, in some embodiments of the present utility model, the cutter head assembly 31 includes a moving cutter member 311 and a stationary cutter member 312, and the fixing assembly 32 includes a first fixing member 321 and a second fixing member 322. The moving cutter member 311 is connected to one end of the drive shaft 20 through the first fixing member 321, and the stationary cutter member 312 is detachably connected to the housing 10 through the second fixing member 322. In the specific implementation manner of the present utility model, the cutter head assembly 31 is further subdivided into a moving cutter member 311 and a stationary cutter member 312. The moving cutter member 311 is the main component in the cutter head mechanism 30 that performs shaving or trimming functions, and it is firmly connected to one end of the drive shaft 20 through the first fixing member 321. When the drive shaft 20 rotates, the moving cutter member 311 will rotate together, thereby achieving the effect of shaving or trimming. The stationary cutter member 312 plays an auxiliary and cooperative role with the moving cutter member 311, and it is detachably connected to the housing 10 through the second fixing member 322. Such a design not only facilitates the replacement and cleaning by the user during use but also ensures the stability and durability of the overall structure of the cutter head mechanism 30. At the same time, the ingenious design of the first fixing member 321 and the second fixing member 322 further enhances the connection strength between the cutter head mechanism 30, the housing 10, and the drive shaft 20, making the entire cutter head structure more stable and reliable during use.

[0064] Similarly, in some embodiments of the present utility model, the moving cutter member 311 includes a first moving cutter 3111 and a second moving cutter 3112. The first moving cutter 3111 and the second moving cutter 3112 are arranged along the radial direction of the drive shaft 20. The stationary cutter member 312 includes a first stationary cutter 3121 and a second stationary cutter 3122. The first moving cutter 3111 is correspondingly arranged with the first stationary cutter 3121, and the second moving cutter 3112 and the second stationary cutter 3122 are correspondingly arranged. In the specific implementation manner of the present utility model, the moving cutter member 311 is further designed to include a first moving cutter 3111 and a second moving cutter 3112. These two moving cutters are arranged along the radial direction of the drive shaft 20. Such a layout enables them to cover a wider shaving or trimming area when rotating, improving the use efficiency. The stationary cutter member 312 correspondingly includes a first stationary cutter 3121 and a second stationary cutter 3122, which are respectively correspondingly arranged with the first moving cutter 3111 and the second moving cutter 3112. The cooperation between the first moving cutter 3111 and the first stationary cutter 3121, as well as the cooperation between the second moving cutter 3112 and the second stationary cutter 3122, have been carefully designed to ensure a stable and uniform cutting effect during shaving or trimming. Such a design of the cutter head assembly 31 not only enhances the overall performance of the razor but also brings a more comfortable and efficient use experience to the user.

[0065] Further, referring to Figure 3 , Figure 5 andFigure 7 , in some embodiments of the present utility model, the first fixed cutter 3121 and the second fixed cutter 3122 are connected by a fixed cutter connecting frame 313. The fixed cutter connecting frame 313 includes an upper fixing ring 3131 and a lower fixing ring 3132. The connected edges of the first fixed cutter 3121 and the second fixed cutter 3122 are clamped in the annular groove 3132a of the lower fixing ring 3132 through the upper fixing ring 3131. In the specific implementation manner of the present utility model, the first fixed cutter 3121 and the second fixed cutter 3122 are connected by the fixed cutter connecting frame 313. The fixed cutter connecting frame 313 is designed to include two parts, namely an upper fixing ring 3131 and a lower fixing ring 3132. The design of the upper fixing ring 3131 and the lower fixing ring 3132 enables the connected edges of the first fixed cutter 3121 and the second fixed cutter 3122 to be firmly clamped in the annular groove 3132a of the lower fixing ring 3132. Such a connection method not only ensures the stable connection between the first fixed cutter 3121 and the second fixed cutter 3122, but also makes the entire fixed cutter component 312 more compact and firm in structure. At the same time, the design of the fixed cutter connecting frame 313 also takes into account the requirements of easy installation and disassembly, so that users can conveniently replace or clean during use. Such a design further improves the overall performance of the razor and the user experience.

[0066] In some embodiments of the present utility model, the thickness of the first fixed cutter 3121 is greater than the thickness of the second fixed cutter 3122. In the specific implementation manner of the present utility model, the first fixed cutter 3121 and the second fixed cutter 3122 are different in the design of the cutter thickness. Specifically, the thickness of the first fixed cutter 3121 is designed to be greater than the thickness of the second fixed cutter 3122. Such a design is considered based on different shaving or trimming requirements. The thicker first fixed cutter 3121 can cooperate with the first moving cutter 3111 to trim the hair once, and can cut the longer hair shorter; while the thinner second fixed cutter 3122 can cooperate with the second moving cutter 3112 to further trim the hair, and can trim the shorter hair again to make the trimming cleaner. Therefore, it can be imagined that the second fixed cutter 3122 and the second moving cutter 3112 are arranged inside the first fixed cutter 3121 and the first moving cutter 3111. During the hair trimming process, the first fixed cutter 3121 and the first moving cutter 3111 can first cut the hair shorter, and then the second fixed cutter 3122 and the second moving cutter 3112 can cut and trim again. Such a progressive trimming method can make the hair trimming cleaner. Through such a design, the cutter head structure can more flexibly adapt to different shaving or trimming scenarios, providing users with a more personalized and efficient shaving experience. At the same time, the design of different cutter thicknesses also takes into account the durability and service life of the blades to ensure the performance and quality of the entire razor.

[0067] Refer to Figures 6 to 7, in some embodiments of the present utility model, the first moving blade 3111 and the second moving blade 3112 are respectively fixed to the first fixing member 321. The first fixing member 321 is provided with a positioning post 3211 and a fixing post 3212. The first moving blade 3111 is provided with a mounting hole 3111a, and the second moving blade 3112 is provided with a spring piece 3112a. The first moving blade 3111 is clamped to the first fixing member 321 through the positioning post 3211, and the second moving blade 3112 is fixed in the mounting hole 3111a through the spring piece 3112a and the fixing post 3212. In this specific embodiment, the first moving blade 3111 and the second moving blade 3112 are respectively fixed to the first fixing member 321. To achieve this fixed connection, the first fixing member 321 is specifically provided with a positioning post 3211 and a fixing post 3212. The first moving blade 3111 is provided with a mounting hole 3111a, which cooperates with the positioning post 3211, enabling the first moving blade 3111 to be firmly clamped to the first fixing member 321 through the positioning post 3211. The second moving blade 3112 is provided with a spring piece 3112a, and this spring piece 3112a interacts with the fixing post 3212 to stably fix the second moving blade 3112 in the mounting hole 3111a. Through such a design, both the first moving blade 3111 and the second moving blade 3112 can be accurately positioned and firmly installed on the first fixing member 321, so as to rotate stably under the drive of the drive shaft 20 to achieve the functions of shaving or trimming. At the same time, this ingenious fixing method also makes the cutter head structure more compact and durable as a whole.

[0068] Referring to Figure 5 and Figure 7 , in some embodiments of the present utility model, the second fixing member 322 includes: a cover body 3221 and a second fixing frame 3222. The cover body 3221 is detachably covered on one end of the opening of the housing 10; the second fixing frame 3222 is clamped to the cover body 3221, and the outer edge of the stationary cutter member 312 is clamped between the cover body 3221 and the second fixing frame 3222. The second fixing member 322 is designed to include two parts, namely a cover body 3221 and a second fixing frame 3222. The cover body 3221 is detachable and can be covered on one end of the opening of the housing 10, thus playing a role in closing and protecting the cutter head mechanism 30. The second fixing frame 3222 is clamped to the cover body 3221, and such a design enables the second fixing frame 3222 to be stably installed on the cover body 3221. The outer edge of the stationary cutter member 312 is ingeniously clamped between the cover body 3221 and the second fixing frame 3222. Such a connection method not only ensures the stability of the stationary cutter member 312, but also makes the entire cutter head structure more convenient and quick to disassemble and replace. Through such a design, users can more easily clean and maintain the cutter head mechanism 30 during use, thereby prolonging the service life of the razor and maintaining its good shaving effect.

[0069] Further, in some embodiments of the present utility model, the cover body 3221 is connected to the outer shell 10 by a magnetic attraction method. The cover body 3221 is designed to be connected to the outer shell 10 by a magnetic attraction method. This magnetic attraction method not only ensures the stable fixation of the cover body 3221 on the outer shell 10, but also enables the user to disassemble and install the cover body 3221 more conveniently and quickly.

[0070] Specifically, a magnet or magnetic material may be built into the open end of the outer shell 10, and a ferrous component or magnetic component capable of attracting the magnet or magnetic material is correspondingly provided on the cover body 3221. When the cover body 3221 approaches the open end of the outer shell 10, the attraction between the magnet or magnetic material and the ferrous component or magnetic component will firmly adsorb the cover body 3221 on the outer shell 10. The magnetic attraction connection method has the advantages of simple operation, stable connection, easy disassembly and installation, etc. The user can easily disassemble or install the cover body 3221 from the outer shell 10 without using any tools or complex operation steps. At the same time, the magnetic attraction connection method can also ensure the close fit of the cover body 3221 on the outer shell 10, preventing loosening or falling off during use. Through the magnetic attraction connection method, the cover body 3221 is stably fixed on the outer shell 10, and at the same time, the detachable connection with the outer shell 10 is realized. This structure not only improves the overall performance and stability of the product, but also greatly facilitates the user's daily cleaning and maintenance work. When the user needs to clean or replace the cutter head assembly 31, the cover body 3221 can be easily disassembled, and then the fixed cutter member 312 can be disassembled from the outer shell 10 for cleaning or replacement. After cleaning or replacement, the user only needs to bring the cover body 3221 close to the open end of the outer shell 10, and it can be firmly installed on the outer shell 10 by magnetic attraction.

[0071] Refer to Figure 1 , according to the hair trimmer of the second aspect embodiment of the present utility model, the hair trimmer includes the cutter head structure of any one of the above embodiments. The driving shaft 20 of the hair trimmer is arranged in the outer shell 10 through the first fixing frame 21, and the cutter head mechanism 30 is connected to one end of the driving shaft 20. The driving shaft 20 can drive the moving cutter of the cutter head mechanism 30 to rotate, and the first fixing frame 21 is arranged in the cavity of the outer shell 10 and is located inside the cutter head mechanism 30, so as to facilitate the disassembly of the cutter head mechanism 30 from the outer shell 10, so as to facilitate cleaning the inside of the hair trimmer or replacing the structural parts of the cutter head mechanism 30 of the hair trimmer.

[0072] Refer to Figures 1 to 3 and Figures 8 to 9, in some embodiments of the present utility model, the hair trimmer includes a floating structure 40. The cutter head structure is disposed on the housing 10 through the floating structure 40. The floating structure 40 is disposed in the housing 10 and sleeved on the outer peripheral side of the drive shaft 20. The first fixing frame 21 is located outside the floating structure 40.

[0073] Specifically, the floating structure 40 is ingeniously disposed in the housing 10 and sleeved on the outer peripheral side of the drive shaft 20. Such a design enables the cutter head structure to flexibly float in multiple directions with the support of the floating structure 40 to better adapt to the contours of the face or body. The first fixing frame 21 is located outside the floating structure 40 and cooperates with the floating structure 40 to ensure the stable fixation and flexible floating of the cutter head structure. The main function of the floating structure 40 is to allow the cutter head structure to make fine adjustments according to the contours of the user's face or body during trimming to ensure the uniformity and comfort of trimming. Through the design of the floating structure 40, the cutter head structure can automatically adjust the angle when encountering facial curves or uneven parts, so as to maintain close contact with the skin, reducing pulling and irritation. When the user uses the hair trimmer for trimming, the drive shaft 20 drives the cutter head structure to rotate. At the same time, the floating structure 40 allows the cutter head structure to flexibly float in multiple directions to adapt to different facial or body contours. The first fixing frame 21 and the floating structure 40 cooperate together to ensure the stable fixation of the cutter head structure during floating, preventing it from shaking excessively or falling off. Through such a design, the hair trimmer can provide a more fitting and comfortable trimming experience, reducing the pulling feeling and discomfort of the user.

[0074] Further, referring to Figures 2 to 3 and Figure 8 , in some embodiments of the present utility model, the housing 10 includes a first housing 11. The outer edge of the first fixing frame 21 is disposed on the first housing 11. The floating structure 40 includes a first frame body 41 and a second frame body 42. The first frame body 41 and the second frame body 42 are connected by a plurality of elastic sheets 43. The plurality of elastic sheets 43 are evenly distributed at intervals along the circumferential direction of the first frame body 41. The first frame body 41 is disposed on the first housing 11. The housing 10 further includes a second housing 12 and a third housing 13. The second housing 12 is disposed on the outer peripheral side of the first housing 11. The third housing 13 is disposed inside the first housing 11. The second frame body 42 is disposed in the third housing 13. The first housing 11 can float between the second housing 12 and the third housing 13 through the floating structure 40.

[0075] The housing 10 is mainly composed of a first housing 11, a second housing 12 and a third housing 13, which together constitute the main structure of the hair trimmer. The first housing 11 is the basic part of the housing 10, and it bears the main components of the cutter head structure, such as the first fixing frame 21. The outer edge of the first fixing frame 21 is arranged on the first housing 11, ensuring the stable connection between the cutter head structure and the housing 10. The second housing 12 is arranged on the outer peripheral side of the first housing 11, and it plays a role in protecting the internal structure and enhancing the overall aesthetics. The third housing 13 is arranged inside the first housing 11, and it provides an installation space for the floating structure 40 and ensures the stability of the floating structure 40 during the trimming process.

[0076] The floating structure 40 is mainly composed of a first frame body 41 and a second frame body 42, which are connected together by a plurality of elastic sheets 43. These elastic sheets 43 are evenly distributed at intervals along the circumferential direction of the first frame body 41, providing good elasticity and stability for the floating structure 40. The first frame body 41 is arranged on the first housing 11, and it serves as a connection bridge between the floating structure 40 and the housing 10, ensuring that the floating structure 40 can float stably on the housing 10. The second frame body 42 is arranged in the third housing 13, and it is connected to the first frame body 41 by the elastic sheets 43, jointly constituting the main part of the floating structure 40.

[0077] Therefore, it can be understood that when the user uses the hair trimmer for trimming, the first housing 11 can float between the second housing 12 and the third housing 13 through the floating structure 40. This floating method enables the cutter head structure to better adapt to the contours of the face or body, providing a more fitting and comfortable trimming experience. The elastic sheets 43 in the floating structure 40 play a key buffering and adapting role. When encountering facial curves or uneven parts, the elastic sheets 43 can undergo slight deformations, enabling the first housing 11 to float flexibly in multiple directions, thus maintaining the close fit between the cutter head structure and the skin.

[0078] More specifically, referring to Figure 8, in some embodiments of the present utility model, the diameter of the first housing 41 is greater than that of the second housing 42, and the elastic piece 43 is bent towards the axis of the drive shaft 20. The first housing 41, as the main component of the floating structure 40, is designed to have a diameter greater than that of the second housing 42. This design enables the first housing 41 to more stably carry the cutter head structure and provides a larger floating space during trimming. The second housing 42 is located inside the first housing 41 and is connected to the first housing 41 by the elastic piece 43. Since the diameter of the second housing 42 is smaller, it can move more flexibly in the third housing 13, thereby further enhancing the adaptability and flexibility of the floating structure 40. The elastic piece 43 is the key component connecting the first housing 41 and the second housing 42, and they are designed to be bent towards the axis of the drive shaft 20. This bent setting enables the elastic piece 43 to deform when subjected to an external force, allowing the first housing 41 to float in multiple directions. When the cutter head structure encounters facial curves or uneven parts, the bent design of the elastic piece 43 enables it to undergo a slight deformation, and then the first housing 41 can automatically adjust its angle to maintain close contact with the skin. This design not only improves the uniformity and comfort of trimming but also reduces the pulling feeling and discomfort of the user.

[0079] Combined with the description of the above embodiments, the housing 10 is composed of a first housing 11, a second housing 12, and a third housing 13, and the floating structure 40 includes a first housing 41, a second housing 42, and an elastic piece 43. These components together constitute the main structure of the hair trimmer and achieve the flexible floating and stable fixation of the cutter head structure during trimming. When the user uses the hair trimmer for trimming, the drive shaft 20 drives the cutter head structure to rotate. At the same time, the floating structure 40 allows the cutter head structure to float flexibly in multiple directions to adapt to different facial or body contours. This floating is achieved through the bent design of the elastic piece 43 and the relative movement between the first housing 41 and the second housing 42. Through such a design, the hair trimmer can provide a more fitting and comfortable trimming experience, reduce the pulling feeling and discomfort of the user, and improve the uniformity and efficiency of trimming.

[0080] Further, referring to Figures 2 to 3 and Figure 8 , in some embodiments of the present utility model, the inner side of the second housing 12 has a spherical inner wall, the outer side of the third housing 13 has a spherical outer wall, both the inner and outer sides of the first housing 11 have matching spherical walls, the spherical walls respectively match the spherical inner wall and the spherical outer wall, and the first housing 11 can move between the second housing 12 and the third housing 13.

[0081] Specifically, the inner side of the second housing 12 is designed to have a spherical inner wall. This design enables a spherical space to be formed inside the second housing 12, providing the necessary space for the movement of the first housing 11. The outer side of the third housing 13 has a spherical outer wall. This design enables the third housing 13 to fit with the inner spherical wall of the first housing 11, ensuring that the first housing 11 can float stably on the third housing 13. Both the inner and outer sides of the first housing 11 have spherical walls that fit with the spherical inner wall of the second housing 12 and the spherical outer wall of the third housing 13 respectively. Due to this spherical wall design, the first housing 11 can move freely between the second housing 12 and the third housing 13, achieving floating in multiple directions. This floating method enables the cutter head structure to better adapt to the contours of the face or body, providing a more fitting and comfortable trimming experience.

[0082] Combined with the description of the foregoing embodiments, the housing 10 is composed of a first housing 11, a second housing 12, and a third housing 13, which together constitute the main structure of the hair trimmer. When the user uses the hair trimmer for trimming, the drive shaft 20 will drive the cutter head structure to rotate. At the same time, due to the spherical wall design between the first housing 11 and the second housing 12 and the third housing 13, the first housing 11 can float flexibly in multiple directions to adapt to different facial or body contours. Through such a design, the hair trimmer not only improves the uniformity and comfort of trimming, but also reduces the pulling feeling and discomfort of the user, making the trimming process smoother and more efficient. The hair trimmer realizes the flexible movement and stable floating of the first housing 11 between the second housing 12 and the third housing 13 through the spherical wall structure and the relative positional relationship of the second housing 12, the third housing 13, and the first housing 11. This design not only improves the overall performance and comfort of the product, but also greatly enhances the user experience and satisfaction.

[0083] Referring to Figures 2 to 3 and Figure 8 , in some embodiments of the present utility model, the hair trimmer further includes a cutter pressing structure 50, and the other end of the drive shaft 20 is connected to the drive source through the cutter pressing structure 50. Such a design enables the power to be transmitted to the drive shaft 20 through the cutter pressing structure 50 when the drive source is started, thereby driving the cutter head structure to rotate and realizing the trimming function.

[0084] Further, in some embodiments of the present utility model, the cutter pressing structure 50 includes a universal shaft sleeve 51 and a universal shaft 53. One end of the universal shaft sleeve 51 is connected to one end of the drive shaft 20. An elastic member 52 is disposed in the universal shaft sleeve 51. One end of the elastic member 52 sleeves one end of the drive shaft 20 and abuts against the inner wall of the universal shaft sleeve 51. One end of the universal shaft 53 is movably disposed in the universal shaft sleeve 51 along the axial direction. The other end of the elastic member 52 abuts against the end of one end of the universal shaft 53. The other end of the universal shaft 53 is connected to a drive source.

[0085] Specifically, based on the hair trimmer of the above embodiment, the specific structure and connection mode of the cutter pressing structure 50 are further described in detail in this embodiment. The cutter pressing structure 50 mainly includes two parts: a universal shaft sleeve 51 and a universal shaft 53. One end of the universal shaft sleeve 51 is connected to one end of the drive shaft 20, and they are stably connected through close cooperation. An elastic member 52 is disposed in the universal shaft sleeve 51. One end of the elastic member 52 sleeves one end of the drive shaft 20 and abuts against the inner wall of the universal shaft sleeve 51. Such a design enables the elastic member 52 to provide certain buffering and supporting effects for the drive shaft 20, enhancing the stability of the cutter head structure. One end of the universal shaft 53 is movably disposed in the universal shaft sleeve 51 along the axial direction. This movable design enables the universal shaft 53 to flexibly float in multiple directions to adapt to different trimming requirements. The other end of the elastic member 52 abuts against the end of one end of the universal shaft 53, providing certain pre-tightening force and stability for the universal shaft 53. The other end of the universal shaft 53 is connected to a drive source. When the drive source is started, the power is transmitted to the drive shaft 20 through the universal shaft 53, thereby driving the cutter head structure to rotate.

[0086] Refer to Figures 6 to 8 , in some embodiments of the present utility model, the hair trimmer further includes a face cover 60. The face cover 60 can be covered on the outside of the first fixing frame 21. The center of the face cover 60 is sleeved on the first fixing frame 21, and the outer edge of the face cover 60 is disposed on the housing 10. The hair trimmer provided by the embodiment of the present utility model further includes a face cover 60. This face cover 60 can be covered on the outside of the first fixing frame 21, playing a role in protecting and beautifying the appearance of the product. At the same time, the central part of the face cover 60 is sleeved on the first fixing frame 21 to ensure the stable connection between the face cover 60 and the first fixing frame 21. The outer edge of the face cover 60 is disposed on the housing 10. Such a design enables the face cover 60 to be firmly fixed on the housing 10, not easily falling off or shaking, and can also protect the structure inside the housing 10.

[0087] In practical applications, when a user needs to use a hair trimmer for trimming, the face cover 60 can be first installed on the first fixing frame 21 and the housing 10. In this way, the face cover 60 can play a role in shielding and protecting the internal structure, preventing dust or foreign objects from entering the inside of the trimmer and affecting the service life and performance of the product. At the same time, the beautiful appearance of the face cover 60 can also enhance the overall texture of the product and improve the user experience.

[0088] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present utility model within the scope of knowledge possessed by those of ordinary skill in the relevant technical field.

Claims

1. A cutter head structure, characterized in that: include: Housing (10); a drive shaft (20), the drive shaft (20) being arranged in the housing (10) via a first fixing frame (21), the first fixing frame (21) being mounted on an opening at one end of the housing (10) and being located in a cavity of the housing (10), the drive shaft (20) being rotatably passed through the first fixing frame (21); as well as A cutter head mechanism (30), wherein the cutter head mechanism (30) is arranged on an opening at one end of the outer shell (10) and is connected to the outer shell (10), the cutter head mechanism (30) is connected to one end of the drive shaft (20), the first fixing frame (21) is located on the inner side of the cutter head mechanism (30), and the drive shaft (20) drives the movable cutter in the cutter head mechanism (30) to rotate.

2. The cutter head structure according to claim 1, characterized in that: The first fixing frame (21) comprises a limiting portion (211) and a fixing portion (212), wherein the fixing portion (212) is arranged on the outside of the limiting portion (211), the limiting portion (211) is sleeved on the outside of the driving shaft (20), and the outer edge of the fixing portion (212) is connected to one end of the opening of the housing (10).

3. The cutter head structure according to claim 1, characterized in that: The cutter head mechanism (30) comprises a cutter head assembly (31) and a fixing assembly (32); the cutter head assembly (31) is respectively arranged on an opening at one end of the housing (10) and connected to the driving shaft (20) through the fixing assembly (32).

4. The cutter head structure according to claim 3, characterized in that: The cutter head assembly (31) comprises a movable cutter component (311) and a fixed cutter component (312); the fixed assembly (32) comprises a first fixed component (321) and a second fixed component (322); the movable cutter component (311) is connected to one end of the drive shaft (20) via the first fixed component (321); and the fixed cutter component (312) is detachably connected to the housing (10) via the second fixed component (322).

5. The cutter head structure according to claim 4, characterized in that: The movable knife component (311) includes a first movable knife (3111) and a second movable knife (3112), and the first movable knife (3111) and the second movable knife (3112) are distributed along the radial direction of the driving shaft (20); the fixed knife component (312) includes a first fixed knife (3121) and a second fixed knife (3122), and the first movable knife (3111) and the first fixed knife (3121) are correspondingly arranged, and the second movable knife (3112) and the second fixed knife (3122) are correspondingly arranged.

6. The cutter head structure according to claim 5, characterized in that: The first fixed knife (3121) and the second fixed knife (3122) are connected via a fixed knife connecting frame (313), and the fixed knife connecting frame (313) comprises an upper fixed ring (3131) and a lower fixed ring (3132), and the connected edges of the first fixed knife (3121) and the second fixed knife (3122) are clamped in the annular groove (3132a) of the lower fixed ring (3132) via the upper fixed ring (3131).

7. The cutter head structure according to claim 5, characterized in that: The thickness of the first fixed knife (3121) is greater than the thickness of the second fixed knife (3122).

8. The cutter head structure according to claim 5, characterized in that: The first movable knife (3111) and the second movable knife (3112) are respectively fixed on the first fixing component (321); the first fixing component (321) is provided with a positioning column (3211) and a fixing column (3212); the first movable knife (3111) is provided with a mounting hole (3111a); the second movable knife (3112) is provided with a spring sheet (3112a); the first movable knife (3111) is clamped with the first fixing component (321) via the positioning column (3211); the second movable knife (3112) is fixed in the mounting hole (3111a) via the spring sheet (3112a) and the fixing column (3212).

9. The cutter head structure according to claim 4, characterized in that: The second fixing member (322) comprises: a cover body (3221), the cover body (3221) being detachably covered on one end of the opening of the housing (10); and A second fixing frame (3222), wherein the second fixing frame (3222) is clamped with the cover body (3221), and an outer edge of the fixed knife component (312) is clamped between the cover body (3221) and the second fixing frame (3222).

10. The cutter head structure according to claim 9, characterized in that: The cover body (3221) is connected to the housing (10) by magnetic attraction.

11. A hair trimmer, characterized in that: The invention comprises a cutter head structure as claimed in any one of claims 1 to 10.

12. The hair trimmer according to claim 11, characterized in that It also includes a floating structure (40), wherein the cutter head structure is arranged on the housing (10) through the floating structure (40), the floating structure (40) is arranged in the housing (10) and sleeved on the outer peripheral side of the drive shaft (20), and the first fixing frame (21) is located outside the floating structure (40).

13. The hair trimmer according to claim 12, characterized in that The housing (10) comprises a first shell (11), the outer edge of the first fixing frame (21) is arranged on the first shell (11), the floating structure (40) comprises a first frame (41) and a second frame (42), the first frame (41) and the second frame (42) are connected by a plurality of elastic sheets (43), the plurality of elastic sheets (43) are evenly distributed along the circumference of the first frame (41), and the first frame (41) is arranged on the first shell (11); The housing (10) further comprises: a second housing (12), the second housing (12) being disposed on an outer peripheral side of the first housing (11); and A third shell (13), wherein the third shell (13) is arranged on the inner side of the first shell (11), the second frame (42) is arranged in the third shell (13), and the first shell (11) can float between the second shell (12) and the third shell (13) through the floating structure (40).

14. The hair trimmer according to claim 13, characterized in that The diameter of the first frame (41) is greater than the diameter of the second frame (42), and the elastic sheet (43) is bent toward the axis of the driving shaft (20).

15. The hair trimmer according to claim 13, characterized in that The inner side of the second shell (12) has a spherical inner wall, the outer side of the third shell (13) has a spherical outer wall, and the inner and outer sides of the first shell (11) both have matching spherical walls, the spherical walls respectively match the spherical inner wall and the spherical outer wall, and the first shell (11) can move between the second shell (12) and the third shell (13).

16. The hair trimmer according to claim 11, characterized in that It also comprises a knife pressing structure (50), and the other end of the driving shaft (20) is connected to a driving source via the knife pressing structure (50).

17. The hair trimmer according to claim 16, characterized in that The knife pressing structure (50) comprises: a universal shaft sleeve (51), one end of which is connected to one end of the drive shaft (20), an elastic member (52) being arranged in the universal shaft sleeve (51), one end of which is sleeved on one end of the drive shaft (20) and abuts against an inner wall of the universal shaft sleeve (51); and A universal shaft (53), one end of which can be movably arranged in the universal shaft sleeve (51) along the axial direction, the other end of the elastic member (52) abuts against the end of one end of the universal shaft (53), and the other end of the universal shaft (53) is connected to the driving source.

18. The hair trimmer according to claim 11, characterized in that It also includes a cover (60), which can be covered on the outside of the first fixing frame (21), the center of the cover (60) is sleeved on the first fixing frame (21), and the outer edge of the cover (60) is arranged on the outer shell (10).

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