Hair trimmer

Abstract

The hair trimmer comprises a main machine and a tool bit assembly detachably connected with the main machine in the longitudinal direction, first limiting parts are arranged on the two sides, in the first direction, of the top end of the main machine in a protruding mode, second limiting parts are formed in the two sides, in the second direction, of the top end of the main machine in a sunken mode, and the longitudinal direction, the first direction and the second direction are perpendicular in a pairwise mode; the two first limiting parts, the two second limiting parts and the top wall of the main machine define a tool bit limiting area, and the tool bit assembly is installed in the tool bit limiting area in a limiting mode in the first direction and the second direction. According to the hair trimmer, the tool bit assembly is detachably connected with the main machine in the longitudinal direction, and a user can easily detach the tool bit assembly from the main machine when cleaning and maintaining the hair trimmer.

Description

Technical Field

[0001] The present application relates to the field of hair trimmers, and particularly to a hair trimmer. Background Art

[0002] With the improvement of people's requirements for their own images, various hair trimmers have emerged, such as razors, hair clippers, hair removal trimmers, etc. Hair trimmers generally include a cutter head assembly and a main body. The cutter head assembly needs to be cleaned and maintained regularly to prevent hair from clogging the cutter head assembly and avoid damage to the cutter head assembly. However, in the prior art, it is difficult to disassemble the cutter head assembly and the main body, which is not convenient for cleaning and maintenance, affects the service life of the cutter head assembly, and reduces the efficiency of hair trimming.

[0003] The above content is only used to assist in understanding the technical solution of the utility model, and does not represent an admission that the above content is prior art. Summary of the Utility Model

[0004] In view of the above problems, the present utility model provides a hair trimmer, aiming to solve the technical problem of difficult disassembly of the cutter head assembly and the main body.

[0005] To achieve the above object, the hair trimmer provided by the present utility model includes:

[0006] A main body and a cutter head assembly detachably connected to the main body longitudinally. On both sides of the top end of the main body in a first direction, first limiting portions are convexly provided, and on both sides in a second direction, second limiting portions are recessed to be formed. The longitudinal direction, the first direction and the second direction are perpendicular to each other in pairs; the two first limiting portions, the two second limiting portions and the top wall of the main body enclose a cutter head limiting area, and the cutter head assembly is limited and installed in the cutter head limiting area in both the first direction and the second direction.

[0007] In one embodiment, the main body includes a main body case and a top cover. The top of the main body case has an opening, and the top cover is installed at the opening. At both ends of the top cover in the second direction, the second limiting portions are respectively formed, and on both side walls of the main body case in the first direction, protrusions are formed relative to the top cover to form the first limiting portions, and the cutter head assembly covers the top cover.

[0008] In one embodiment, the cutter head assembly includes a housing, and the housing includes an annular main body portion and a convex portion. The convex portion is fixedly connected to both sides of the annular main body portion in the second direction and extends towards the top cover;

[0009] The bottom of the annular main body portion is clamped between the two first limiting portions;

[0010] The top cover includes a cover body and two limiting lugs connected to both sides of the cover body in the second direction. The limiting lugs are recessed relative to the cover body in a direction away from the cutter head assembly to form the second limiting portion. A clearance notch corresponding to the second limiting portion is provided on the side wall of the main housing in the first direction; the convex portion is embedded in the second limiting portion and is exposed outside the main housing through the clearance notch.

[0011] In one embodiment, the convex portion is smoothly connected to the annular main body portion;

[0012] And / or, the outer surface of the convex portion is smoothly spliced with the outer surface of the main housing.

[0013] In one embodiment, the second limiting portion includes a first limiting surface, and the first limiting surfaces on the two second limiting portions are oppositely arranged in the second direction; both ends of the first limiting portion in the second direction extend beyond the first limiting surface to form limiting blocking portions, and the convex portion is clamped between the two limiting blocking portions in the first direction.

[0014] In one embodiment, the thickness of the convex portion gradually increases in a direction close to the top cover, and the outer surface of the convex portion is smoothly spliced with the outer surface of the limiting blocking portion.

[0015] In one embodiment, the annular main body portion has a mating portion that mates with the first limiting portion. The mating portion has a top limiting surface and a side limiting surface connected to the top limiting surface. The top limiting surface protrudes outward in the first direction relative to the side limiting surface. The top limiting surface is in longitudinal limiting cooperation with the first limiting portion, and the side limiting surface is in limiting cooperation with the first limiting portion in the first direction.

[0016] In one embodiment, the outer surface of the annular main body portion is smoothly spliced with the outer surface of the main housing to form the outer surface of the hair trimmer.

[0017] In one embodiment, the top limiting surface and the side limiting surface are connected to form an arc-shaped guiding surface; the inner side wall of the first limiting portion is adapted to abut against the arc-shaped guiding surface;

[0018] And / or, the thickness of the first limiting portion gradually decreases in a direction close to the housing.

[0019] In one embodiment, the arc-shaped guiding surface and the circumferential surface of the convex portion are smoothly transitioned in the circumferential direction of the housing.

[0020] In one embodiment, the circumferential surface of the convex portion has a first bottom surface extending in the first direction and two second arc surfaces respectively connecting the first bottom surface and the arc-shaped guiding surface; the second limiting portion is adapted to the circumferential surface of the convex portion.

[0021] In one embodiment, the cutter head assembly further includes a base magnetically connected to the main body, and the housing is disposed around the base.

[0022] At both ends of the base in the second direction, there are respectively convex lugs extending towards the top cover, and the second limiting portion is provided with grooves for limiting cooperation with the lugs.

[0023] In one embodiment, the second limiting portion has a first limiting surface, and the first limiting surfaces on the two second limiting portions are oppositely arranged in the second direction; the first limiting surface and the top wall of the top cover are in arc transition to form a mating surface, and the bottom wall of the annular main body portion is arc-connected to the inner side wall of the convex portion to be adapted to the mating surface, and the groove is formed on the mating surface.

[0024] In one embodiment, magnetic members are provided at both ends of the base in the second direction, and the top cover is provided with magnetic members magnetically cooperating with the magnetic members.

[0025] The hair trimmer of the present utility model is detachably connected longitudinally through the cutter head assembly and the main body. When the user is cleaning and maintaining, the cutter head assembly can be easily detached from the main body, thereby effectively preventing hair blockage, improving the cleaning effect, and prolonging the service life of the cutter head assembly. Secondly, the top end of the main body protrudes a first limiting portion in the first direction, restricting the position of the cutter head assembly in the first direction; the top end of the main body is recessed to form a second limiting portion in the second direction, restricting the position of the cutter head assembly in the second direction. Through the concave and convex plug-in settings of the first limiting portion and the second limiting portion with the cutter head assembly in the first direction and the second direction respectively, the cutter head assembly can be fixed in both directions, and the contact area between the cutter head assembly and the cutter head limit is increased, improving the stability and firmness of the installation. The user can detach the cutter head assembly from the main body for cleaning and replacement through a simple action of removing the cover. At the same time, the limit installation of the cutter head assembly and the main body can realize the limit fixation of the cutter head assembly and the main body without additionally increasing parts, making the structure of the hair trimmer more compact and stable, reducing vibration and noise during use, improving the trimming efficiency and comfort, and also reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0027] Figure 1 The structural schematic diagram of one embodiment of the hair trimmer of the present utility model is shown;

[0028] Figure 2 Explosion diagram of an embodiment of the hair trimmer of the present utility model;

[0029] Figure 3 is Figure 1 Cross-sectional view of the hair trimmer;

[0030] Figure 4 is Figure 1 Another cross-sectional view of the hair trimmer;

[0031] Figure 5 Structural schematic diagram of the main body of the hair trimmer of the present utility model;

[0032] Figure 6 Structural schematic diagram of the cutter head assembly of the hair trimmer of the present utility model;

[0033] Figure 7 Structural schematic diagram of the top cover of the hair trimmer of the present utility model.

[0034] Explanation of the reference numerals in the drawings:

[0035] Reference numeral Name Reference numeral Name Reference numeral Name 100 Hair trimmer 110 Main body 111 First limiting part 112 Second limiting part 1121 First limiting surface 1122 Fitting surface 1123 Groove 119 Limiting stop part 113 Main body housing 114 Top cover 1141 Limiting lug 116 Magnetic part 1142 Cover body 118 Cutting head limiting area 120 Cutting head assembly 121 Outer shell 122 Annular main body part 1221 Fitting part 1222 Top limiting surface 1223 Side limiting surface 1224 Arc-shaped guiding surface 123 Protrusion 1231 Peripheral surface of the protrusion 1232 First bottom surface 1233 Second arc surface 124 Base 1241 Lug 1242 Magnetic attraction part 1131 Avoidance notch

[0036] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of the technical solutions appears to be mutually contradictory or unable to be implemented, it should be considered that such a combination of the technical solutions does not exist and is not within the protection scope required by the present utility model.

[0038] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, such descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where both A and B are satisfied simultaneously.

[0040] The present utility model provides a hair trimmer 100.

[0041] In the embodiments of the present utility model, please refer to Figures 1 to 7 , the hair trimmer 100 includes a main body 110 and a cutter head assembly 120 detachably connected to the main body 110 longitudinally. On both sides of the top end of the main body 110 in the first direction, first limiting portions 111 are convexly provided, and on both sides in the second direction, second limiting portions 112 are recessed to form. The longitudinal direction, the first direction, and the second direction are perpendicular to each other pairwise; the two first limiting portions 111, the two second limiting portions 112, and the top wall of the main body 110 enclose a cutter head limiting area 118, and the cutter head assembly 120 is limited and installed in the cutter head limiting area 118 in both the first direction and the second direction.

[0042] In the hair trimmer 100 of the present utility model, the cutter head assembly 120 and the main body 110 are detachably connected longitudinally. When the user performs cleaning and maintenance, the cutter head assembly 120 can be easily detached from the main body 110, thereby effectively preventing hair blockage, improving the cleaning effect, and prolonging the service life of the cutter head assembly 120. Secondly, first limiting portions 111 are convexly provided on the top end of the main body 110 in the first direction, restricting the position of the cutter head assembly 120 in the first direction; second limiting portions 112 are recessed to form on the top end of the main body 110 in the second direction, restricting the position of the cutter head assembly 120 in the second direction. Through the arrangement of the first limiting portions 111 and the second limiting portions 112, the cutter head assembly 120 can be fixed in both directions, ensuring the stability and firmness of the installation. And the user can detach the cutter head assembly 120 from the main body 110 for cleaning and replacement through a simple action of removing the cover. At the same time, the limited installation of the cutter head assembly 120 and the main body 110 can achieve the limited fixation of the cutter head assembly 120 and the main body 110 without additionally increasing components, making the structure of the hair trimmer 100 more compact and stable, reducing vibration and noise during use, improving the trimming efficiency and comfort, and at the same time reducing the production cost.

[0043] It should be noted that the detachable connection method between the cutter head assembly 120 and the main body 110 can be snap connection, connection with threaded fasteners, or other detachable connection methods. In the embodiments of the present utility model, the cutter head assembly 120 is magnetically connected to the main body 110, that is, the cutter head assembly 120 is provided with a magnetic member 1242, and the main body 110 is provided with a magnetic part 116 that magnetically cooperates with the magnetic member 1242 to achieve the detachable connection between the cutter head assembly 120 and the main body 110.

[0044] Specifically, referring to Figure 2 , Figure 5 and Figure 7 , in an embodiment, the main body 110 includes a main body housing 113 and a top cover 114. The top of the main body housing 113 has an open mouth (not shown in the figure), and the top cover 114 is installed at the open mouth. Second limiting parts 112 are respectively formed at both ends of the top cover 114 in the second direction. The two side walls of the main body housing 113 protrude relative to the top cover 114 in the first direction to form first limiting parts 111. The cutter head assembly 120 covers the top cover 114, and the top cover 114 and the two first limiting parts 111 enclose a cutter head limiting area 118.

[0045] In this embodiment, the top cover 114 is in a "ji" shape. The side walls of the "ji"-shaped top cover 114 in the second direction form the second limiting parts 112, which cooperate with the first limiting parts 111 formed on the main body housing 113 to fix the position of the cutter head assembly 120. The cutter head assembly 120 is clamped between the two first limiting parts 111 and covers the second limiting parts 112. This limiting installation method does not require additional parts, realizing the simplification and compactness of the structure. The concave-convex plug-in setting increases the contact area between the cutter head assembly 120 and the main body 110, improving the installation stability of the cutter head assembly 120 and the main body 110. The combination of the top cover 114 and the main body housing 113 forms a complete limiting area, reducing the externally protruding parts and connecting parts, making the setting of the entire hair trimmer 100 more compact. Without redundant gaps and voids, the appearance is more beautiful. Secondly, the components of the main body 110 are arranged inside the main body housing 113 and sealed by the top cover 114, preventing hair, dust, etc. from entering the inside of the main body housing 113, effectively protecting the internal components of the main body 110 and extending the service life of the main body 110. At the same time, the magnetic part 116 is arranged on the top cover 114 to magnetically cooperate with the cutter head assembly 120. During assembly, the cutter head assembly 120 is aligned with the open mouth of the main body housing 113, and the suction force of the magnetic part 116 will automatically adsorb the cutter head assembly 120 to the top cover 114. At the same time, the cutter head assembly 120 is clamped between the two first limiting parts 111 and covers the second limiting parts 112, ensuring the position fixation of the cutter head assembly 120 in the first direction and the second direction and not being easily movable.

[0046] Specifically, referring to Figure 2 and Figure 7, in one embodiment, the cutter head assembly 120 includes a housing 121, and the housing 121 is installed within the cutter head limiting area 118; the housing 121 includes an annular main body portion 122 and a convex portion 123, the convex portion 123 is fixedly connected to both sides of the annular main body portion 122 in the second direction and extends towards the top cover 114, and the bottom of the annular main body portion 122 is clamped between the two first limiting portions 111; the top cover 114 includes a cover main body 1141 and two limiting lugs 1142 connected to both sides of the cover main body 1141 in the second direction, the limiting lugs 1142 are recessed relative to the cover main body 1141 in a direction away from the cutter head assembly 120 to form a second limiting portion 112, and the side wall of the main housing 113 in the first direction is provided with an avoidance notch 1131 corresponding to the second limiting portion 112; the convex portion 123 is embedded in the second limiting portion 112 and is exposed to the main housing 113 through the avoidance notch 1131, and the outer surface of the convex portion 123 forms the outer surface of the hair trimmer 100.

[0047] In this embodiment, through the arrangement that the convex portion 123 is embedded in the second limiting portion 112, there is no need to additionally increase components to achieve limiting and fixing, reducing the number of components and production complexity. The outer surface of the convex portion 123 forms the outer surface of the hair trimmer 100, making the appearance of the entire device more integrated and beautiful. The arrangement of the annular main body portion 122 and the convex portion 123 makes the connection between the cutter head assembly 120 and the main body 110 more compact, reducing the exposed components and making the product look more concise and modern.

[0048] Furthermore, the convex portion 123 is smoothly connected to the annular main body portion 122; and / or, the outer surface of the convex portion 123 is smoothly spliced with the outer surface of the main housing 113.

[0049] Among them, the convex portion 123 being smoothly connected to the annular main body portion 122 ensures a smooth and beautiful appearance, avoiding rigid connection lines and enhancing the overall visual effect of the hair trimmer 100. Secondly, the outer surface of the convex portion 123 being smoothly spliced with the outer surface of the main housing 113 makes the entire device look more integrated and coordinated, without obvious misalignment phenomena, improving the aesthetics of the product. The smooth connection and transition not only improve the aesthetics of the device but also make the user feel more comfortable during use. There are no abrupt edges and corners, reducing the discomfort and scratching risk that may be brought during accidental operation.

[0050] Furthermore, in one embodiment, the second limiting portion 112 includes a first limiting surface 1121, and the first limiting surfaces 1121 on the two second limiting portions 112 are oppositely arranged in the second direction; the two ends of the first limiting portion 111 in the second direction extend beyond the first limiting surface 1121 to form a limiting stop portion 119, and the convex portion 123 is clamped between the two limiting stop portions 119 in the first direction.

[0051] In this embodiment, both ends of the first limiting portion 111 in the second direction extend beyond the first limiting surface 1121 to form limiting blocking portions 119, providing a more secure limiting effect. The convex portion 123 of the housing 121 is clamped between the two limiting blocking portions 119 in the first direction, ensuring that the cutter head assembly 120 will not easily shift during use, thereby improving the stability of the hair trimmer 100. Secondly, the convex portion 123 is clamped between the two limiting blocking portions 119 in the first direction, ensuring that the cutter head assembly 120 can be accurately positioned during installation, reducing the adjustment time for the user during installation, and improving the assembly efficiency. The precise limiting setting also ensures the close cooperation between the cutter head assembly 120 and the main body 110, enhancing the working efficiency of the hair trimmer 100.

[0052] Furthermore, the thickness of the convex portion 123 gradually increases in the direction approaching the top cover 114, and the outer surface of the convex portion 123 is smoothly joined with the outer surface of the limiting blocking portion 119.

[0053] Wherein, the thickness of the convex portion 123 is adapted to the width of the limiting blocking portion 119, and the thickness of the convex portion 123 gradually increases in the direction of the top cover 114, providing a larger contact area and increasing the biting force between the convex portion 123 and the main body housing 113, making the installation of the cutter head assembly 120 more firm. This setting not only increases the contact area between the limiting blocking portion 119 and the convex portion 123, but also effectively prevents the unnecessary movement of the cutter head assembly 120 during use, improving the stability and safety of the hair trimmer 100. Secondly, the outer surface of the convex portion 123 is smoothly joined with the outer surface of the limiting blocking portion 119, eliminating possible edges and protrusions, making the appearance of the hair trimmer 100 cleaner and more beautiful. This setting not only enhances the visual effect of the product, but also improves the user experience.

[0054] Furthermore, referring to Figure 4 and Figure 6 , in an embodiment, the annular main body portion 122 has a mating portion 1221 that mates with the first limiting portion 111. The mating portion 1221 has a top limiting surface 1222 and a side limiting surface 1223 connected to the top limiting surface 1222. The top limiting surface 1222 protrudes outward in the first direction relative to the side limiting surface 1223. The top limiting surface 1222 is in longitudinal limiting cooperation with the first limiting portion 111, and the side limiting surface 1223 is in limiting cooperation with the first limiting portion 111 in the first direction.

[0055] In this embodiment, the arrangement of the mating portion 1221 makes the mating between the annular main body portion 122 and the first limiting portion 111 more compact. The outward convex arrangement of the top limiting surface 1222 and the side limiting surface 1223 effectively saves space, making the hair trimmer 100 more stable and firm during use. Secondly, the top limiting surface 1222 and the side limiting surface 1223 of the mating portion 1221 are respectively in limiting cooperation with the first limiting portion 111, effectively improving the assembly accuracy between the cutter head assembly 120 and the main body 110. The outward convex arrangement of the top limiting surface 1222 ensures the longitudinal limitation of the main body housing 113 by the housing 121, enabling the cutter head assembly 120 to be accurately positioned during installation, reducing the adjustment and error during assembly.

[0056] Furthermore, the top limiting surface 1222 and the side limiting surface 1223 are connected to form an arc-shaped guiding surface 1224, and the inner side wall of the first limiting portion 111 is adapted to abut against the arc-shaped guiding surface 1224; and / or, the thickness of the first limiting portion 111 gradually decreases towards the direction of the housing 121.

[0057] In this embodiment, the arc-shaped guiding surface 1224 can effectively guide the position of the cutter head assembly 120 during the installation process, improving the assembly accuracy and stability. It ensures that the cutter head assembly 120 can smoothly enter the correct position during installation, making the installation process of the cutter head assembly 120 smoother and more efficient, reducing the possible errors and adjustments during assembly, saving operation time and improving the overall use efficiency. Secondly, the arc-shaped guiding surface 1224 can not only guide the position of the cutter head assembly 120, but also enhance the stability of the limitation. It ensures that the inner side wall of the first limiting portion 111 can closely fit the top limiting surface 1222 and the side limiting surface 1223, avoiding possible loosening and displacement, and improving the reliability and safety of the hair trimmer 100.

[0058] In addition, by gradually reducing the thickness of the first limiting portion 111 towards the direction of the housing 121, the overall size and volume of the hair trimmer 100 can be effectively reduced. Secondly, setting the part of the first limiting portion 111 far from the housing 121 to be thicker and smoothly transitioning with the main body housing 113 can significantly enhance the structural rigidity of the main body housing 113, which is beneficial to protecting internal parts of the main body 110 such as motors and circuit boards from external impacts or vibrations, and improving the durability and reliability of the hair trimmer 100.

[0059] Further, the arc-shaped guiding surface 1224 and the circumferential surface 1231 of the convex portion are smoothly transitioned in the circumferential direction of the housing 121. This setting ensures the precise guiding during the installation of the cutter head assembly 120, reduces possible friction and resistance, and enables the cutter head assembly 120 to smoothly enter the correct position. If there are uneven surfaces, it will cause difficulties in alignment during the installation of the cutter head assembly 120, increasing the operation difficulty for the user to install the cutter head assembly 120. Secondly, the smooth transition between the arc-shaped guiding surface 1224 and the circumferential surface 1231 of the convex portion makes the installation of the cutter head assembly 120 more fitting with the main body 110, reduces the gap between the cutter head assembly 120 and the main body 110, and makes the appearance of the hair trimmer 100 more beautiful and modern.

[0060] Specifically, the circumferential surface 1231 of the convex portion has a first bottom surface 1232 extending in the first direction and two second arc surfaces 1233 respectively connecting the first bottom surface 1232 and the arc-shaped guiding surface 1224; the second limiting portion 112 is adapted to the circumferential surface 1231 of the convex portion.

[0061] Among them, the first bottom surface 1232 is a part of the bottom surface of the convex portion 123 extending in the first direction, which helps to ensure that the convex portion 123 can be adapted to the second limiting portion 112 during installation and maintain a stable installation position. The second arc surface 1233 connects the first bottom surface 1232 and the arc-shaped guiding surface 1224, and the shape of the second arc surface 1233 is adapted to the inner wall surface of the limiting stop portion 119. The setting of the second arc surface 1233 makes the transition between the first bottom surface 1232 and the arc-shaped guiding surface 1224 smooth. At the same time, the second arc surface 1233 not only ensures the smooth guiding of the cutter head assembly 120 during installation, but also helps to reduce the possible assembly resistance and friction.

[0062] Further, in an embodiment, the outer surface of the annular main body portion 122 is smoothly spliced with the outer surface of the main body housing 113 to form the outer surface of the hair trimmer 100.

[0063] In this embodiment, the first limiting portion 111 is a part of the top of the main body housing 113, which is used to position and limit the installation position of the cutter head assembly 120, and the outer surface of the first limiting portion 111 is smoothly transitioned with the outer surface of the main body housing 113. The outer surface of the annular main body portion 122 forms a part of the outer surface of the hair trimmer 100, and the smooth splicing between the outer surface of the annular main body portion 122 and the outer surface of the main body housing 113 ensures the unity and integrity of the overall appearance of the hair trimmer 100. The smooth transition and smooth splicing settings ensure the unity of the overall appearance of the device, making the hair trimmer 100 appear more delicate and modern in appearance.

[0064] In one embodiment, the cutter head assembly 120 further includes a base 124 magnetically connected to the host 110, and the housing 121 is disposed around the base 124. At both ends of the base 124 in the second direction, there are respectively convex ears 1241 extending toward the top cover 114, and the second limiting portion 112 is provided with a groove 1123 for limiting cooperation with the convex ears 1241.

[0065] In this embodiment, the base 124 is a part of the cutter head assembly 120, and its function is to support and fix the position of the cutter head assembly 120 on the host 110. The base 124 is usually a flat structure for fixedly connecting the cutter head and the housing 121. At both ends of the base 124 in the second direction, there are respectively convex ears 1241 extending longitudinally toward the top cover 114. The arrangement of the longitudinally extending convex ears 1241 can make the cutter head assembly 120 more compact in the lateral dimension. In contrast, laterally extending convex ears 1241 may increase the lateral width of the cutter head assembly 120, resulting in an increase in the overall volume. By means of the longitudinally extending convex ears 1241, the volume of the cutter head assembly 120 can be effectively reduced without sacrificing function and stability. Secondly, the longitudinally extending convex ears 1241 can provide good vertical support and guiding functions, ensuring that the cutter head assembly 120 can be accurately positioned and stably fixed on the host 110 during installation. This arrangement not only helps to reduce the vibration and movement of the components during transportation and use, but also improves the stability of the overall structure. In addition, the second limiting portion 112 is provided with a groove 1123 for limiting cooperation with the convex ears 1241. The arrangement of the groove 1123 enables the convex ears 1241 to be accurately inserted therein, forming a safe and stable connection, while restricting the movement of the cutter head assembly 120 in the second direction to ensure the accuracy and stability of its position.

[0066] Specifically, referring to Figure 5 and Figure 6 , the second limiting portion 112 has a first limiting surface 1121, and the first limiting surface 1121 is in arc transition with the top wall of the top cover 114 to form a mating surface 1122. The bottom wall of the annular main body portion 122 is arc-connected to the inner side wall of the convex portion 123 to be adapted to the mating surface 1122, and a groove 1123 is formed on the mating surface 1122.

[0067] In this embodiment, an arc connection is adopted between the bottom wall of the annular main body portion 122 and the inner side wall of the convex portion 123. This setting helps to reduce edges and sharp parts, and reduce the friction and wear that may occur during assembly and use. The first limiting surface 1121 is used to limit the movement of the cutter head assembly 120 in the second direction. The connection between the bottom wall of the annular main body portion 122 and the inner side wall of the convex portion 123 can be adapted to the arc-shaped mating surface 1122, reducing the gap between the housing 121 and the second limiting portion 112, making the assembly of the cutter head assembly 120 and the main body 110 more compact. The groove 1123 is provided on the mating surface 1122, further restricting the relative position of the cutter head assembly 120 and the main body 110, and ensuring that the cutter head assembly 120 will not move or loosen easily after installation, thus effectively restricting the movement of the cutter head assembly 120 in the second direction.

[0068] Specifically, referring to Figure 3 , in one embodiment, magnetic members 1242 are provided at both ends of the base 124 in the second direction, and the top cover 114 is provided with magnetic members 116 that are magnetically coupled with the magnetic members 1242.

[0069] In this embodiment, the magnetic member 1242 can be a magnet, a magnetic metal, or other magnetic materials, and the magnetic member 116 can be a magnet or other magnetic elements that can be magnetically attracted to the magnetic member 1242. The base 124 and the top cover 114 are magnetically connected to achieve the detachable connection between the cutter head assembly 120 and the main body 110. The magnetic connection provides good fixing force, which can ensure that the cutter head assembly 120 is securely fixed on the main body 110, avoiding affecting the use effect due to movement or loosening. During disassembly, the magnetic connection method enables the cutter head assembly 120 to be easily installed and disassembled without tools, making the user operation more convenient.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hair trimmer, characterized in that, It includes a main body and a cutter head assembly detachably connected to the main body longitudinally. On both sides of the top end of the main body in the first direction, first limiting parts are convexly provided, and on both sides in the second direction, second limiting parts are recessed to form. The longitudinal direction, the first direction and the second direction are perpendicular to each other in pairs. The two first limiting parts, the two second limiting parts and the top wall of the main body enclose a cutter head limiting area, and the cutter head assembly is limited and installed in the cutter head limiting area in both the first direction and the second direction.

2. The hair trimmer according to claim 1, wherein, The main body includes a main body shell and a top cover. The top of the main body shell has an opening, and the top cover is installed at the opening. The two ends of the top cover in the second direction respectively form the second limiting parts, and the side walls of the main body shell on both sides in the first direction protrude relative to the top cover to form the first limiting parts, and the cutter head assembly covers the top cover.

3. The hair trimmer according to claim 2, characterized in that, The cutter head assembly includes a housing, and the housing includes an annular main body part and a convex part. The convex part is fixedly connected to both sides of the annular main body part in the second direction and extends towards the top cover. The bottom of the annular main body part is clamped between the two first limiting parts. The top cover includes a cover main body and two limiting lugs connected to both sides of the cover main body in the second direction. The limiting lugs are recessed relative to the cover main body in a direction away from the cutter head assembly to form the second limiting parts. The side walls of the main body shell in the first direction are provided with avoidance notches corresponding to the second limiting parts. The convex part is embedded in the second limiting part and is exposed outside the main body shell through the avoidance notches.

4. The hair trimmer according to claim 3, wherein, The convex part is smoothly connected to the annular main body part. And / or, the outer surface of the convex part is smoothly spliced with the outer surface of the main body shell.

5. The hair trimmer according to claim 3, characterized in that, The second limiting part includes a first limiting surface, and the first limiting surfaces on the two second limiting parts are oppositely arranged in the second direction. The two ends of the first limiting part in the second direction extend beyond the first limiting surface to form limiting blocking parts, and the convex part is clamped between the two limiting blocking parts in the first direction.

6. The hair trimmer according to claim 5, characterized in that, The thickness of the convex part gradually increases towards the direction close to the top cover, and the outer surface of the convex part is smoothly spliced with the outer surface of the limiting blocking part.

7. The hair trimmer according to claim 3, wherein The annular main body part has a matching part matching with the first limiting part. The matching part has a top limiting surface and a side limiting surface connected to the top limiting surface. The top limiting surface protrudes outwards in the first direction relative to the side limiting surface. The top limiting surface is in longitudinal limiting cooperation with the first limiting part, and the side limiting surface is in limiting cooperation with the first limiting part in the first direction.

8. The hair trimmer according to claim 7, wherein The outer surface of the annular main body part is smoothly spliced with the outer surface of the main body shell to form the outer surface of the hair trimmer.

9. The hair trimmer according to claim 7, characterized in that, The top limiting surface and the side limiting surface are connected to form an arc-shaped guiding surface. The inner side wall of the first limiting part is adapted to abut against the arc-shaped guiding surface. And / or, the thickness of the first limiting part gradually decreases towards the direction close to the housing.

10. The hair trimmer according to claim 9, characterized in that, The arc-shaped guiding surface and the peripheral surface of the convex part are smoothly transitioned in the circumferential direction of the housing.

11. The hair trimmer according to claim 10, wherein, The circumferential surface of the convex portion has a first bottom surface extending in the first direction and two second arc surfaces respectively connecting the first bottom surface and the arc-shaped guiding surface; the second limiting portion is adapted to the first bottom surface.

12. The hair trimmer according to any one of claims 3 to 11, characterized in that, The cutter head assembly further includes a base magnetically connected to the main body, and the housing is disposed around the base; At both ends of the base in the second direction, there are respectively convex lugs extending towards the top cover, and the second limiting portion is provided with a groove for limiting cooperation with the lugs.

13. The hair trimmer according to claim 12, characterized in that, The second limiting portion has a first limiting surface, and the first limiting surfaces on the two second limiting portions are oppositely arranged in the second direction; the first limiting surface is in arc transition with the top wall of the top cover to form a mating surface, and the bottom wall of the annular main body portion is arc-connected to the inner side wall of the convex portion to be adapted to the mating surface, and the groove is formed on the mating surface.

14. The hair trimmer according to claim 13, characterized in that, Magnets are provided at both ends of the base in the second direction, and magnetic members magnetically cooperating with the magnets are provided on the top cover.

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