Cutter head assembly and hair trimmer

Abstract

The tool bit assembly comprises a plurality of tool bits arranged side by side, a base and a limiting support, the tool bits are connected to the base in a floating mode in the longitudinal direction, the limiting support is fixedly connected to the base, and the limiting support comprises a plurality of limiting walls arranged in the side-by-side direction of the tool bits at intervals; wherein one tool bit is arranged between the two limiting walls at intervals, and every two adjacent tool bits are separated through one limiting wall. According to the tool bit assembly, one tool bit is arranged between the two limiting walls at intervals, so that the adjacent tool bits are separated through the limiting walls, excessive shaking is prevented, the movement stability of the tool bits is improved, and direct contact of the adjacent tool bits is avoided.

Description

Technical Field

[0001] This application relates to the technical field of hair trimming, and particularly to a cutter head assembly and a hair trimmer. Background Art

[0002] With the increasing requirements for the comfort and efficiency of hair trimming, multi-cutter head hair trimmers have emerged, such as multi-cutter head razors, which can shave more efficiently and thoroughly. In the prior art, a multi-cutter head hair trimmer usually includes more than two cutter heads. When more than two cutter heads float longitudinally at the same time, adjacent cutter heads may collide with each other and cause wear, thus affecting the service life of the cutter heads. Secondly, the collision between adjacent cutter heads will interfere with their respective independent movements, resulting in incomplete hair trimming. There may be areas of untrimmed hair, reducing the smoothness and cleanliness of hair trimming. Moreover, the collision between cutter heads will generate noise and reduce the user experience.

[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 proposes a cutter head assembly, aiming to solve the technical problem of mutual collision and interference between adjacent cutter heads.

[0005] To achieve the above object, the cutter head assembly proposed by the present utility model includes:

[0006] A plurality of cutter heads arranged side by side;

[0007] A base, to which a plurality of the cutter heads are longitudinally and movably connected; and

[0008] A limit bracket, fixedly connected to the base, the limit bracket includes a plurality of limit walls spaced along the side-by-side direction of the plurality of cutter heads, one of the cutter heads is arranged between the two limit walls, and adjacent two cutter heads are separated by one of the limit walls.

[0009] In one embodiment, the limit wall includes a first limit surface facing the base, and the first limit surface is spaced from the base;

[0010] The cutter head is provided with a limit convex portion along the side-by-side direction, the limit convex portion is located between the base and the first limit surface, and the top wall of the limit convex portion abuts against the first limit surface to limit the longitudinal floating range of the cutter head.

[0011] In one embodiment, the cutter head assembly further includes a housing, the housing is fixedly connected to the base, and a plurality of the cutter heads are arranged inside the housing;

[0012] The inner wall of the housing is provided with a limiting groove, and the limiting groove has a top wall limiting surface facing the base. On the sides of the two outermost cutting heads among the multiple cutting heads facing the inner wall of the housing, limiting protrusions are respectively provided, and the top wall of the limiting protrusion abuts against the top wall limiting surface to limit the longitudinal floating range of the cutting head.

[0013] In one embodiment, the limiting wall further includes a second limiting surface adjacent to the first limiting surface, and the second limiting surface extends longitudinally;

[0014] A limiting portion protrudes from the wall surface of the limiting wall facing the base, and the limiting portion has a third limiting surface opposite to and spaced from the second limiting surface, and the limiting protrusion is located between the second limiting surface and the third limiting surface.

[0015] In one embodiment, a rib is provided on the wall surface of the limiting wall facing the cutting head, and the rib extends longitudinally.

[0016] In one embodiment, the limiting bracket includes two connecting portions respectively connected to opposite ends of the limiting wall, and the connecting portions are fixedly connected to the base.

[0017] In one embodiment, the connecting portion includes a connecting plate, and the connecting plate is provided with a hook extending towards the base, and the base is provided with a clamping groove engaged with the hook.

[0018] In one embodiment, the width of the connecting plate is greater than the width between two adjacent limiting walls.

[0019] In one embodiment, the cutting head assembly further includes a plurality of fasteners, and the two connecting portions are respectively fixedly connected to the base through the fasteners;

[0020] The cutting head assembly further includes a housing, and a plurality of cutting heads are installed in the housing. Fixing holes facing the base are formed in the circumferential inner wall of the housing, and the fasteners are inserted into the fixing holes to fixedly connect the base, the limiting bracket and the housing.

[0021] In one embodiment, guiding holes are formed at opposite ends of any one of the cutting heads along the length direction of the limiting bracket, the guiding holes extend longitudinally, and the base includes a plurality of guiding shafts that are in limiting cooperation with the guiding holes;

[0022] A clearance space corresponding to the guiding shaft is formed in the connecting portion, and the guiding shaft is inserted into the guiding hole through the clearance space.

[0023] In one embodiment, a magnet groove is formed in the base. The limiting bracket further includes connecting portions respectively connected to opposite ends of the limiting wall. The connecting portions are fixedly connected to the base. The magnet groove is arranged corresponding to the connecting portions, and the connecting portions cover the magnet groove.

[0024] The present utility model further provides a hair trimmer, which includes the cutter head assembly and the driving device as described above. The output shaft of the driving device is connected to the cutter head assembly.

[0025] In the cutter head assembly of the present utility model, by arranging a limiting wall between the cutter heads, one of the cutter heads is arranged at intervals in the side-by-side direction between the two limiting walls, so that adjacent cutter heads are separated by the limiting wall, preventing excessive shaking, thereby improving the movement stability of the cutter heads and avoiding direct contact between adjacent cutter heads. When the cutter heads shake in the side-by-side direction, the limiting wall will limit the shaking range, so that the cutter heads cannot continue to shake in the direction of the already abutted limiting wall, thereby preventing collision between adjacent cutter heads, reducing the generation of noise, and enhancing the user experience. Through the isolation of the limiting wall, it is ensured that each cutter head can float independently without being interfered by adjacent cutter heads, making the trimming more thorough and uniform, thereby improving the smoothness and cleanliness of trimming and reducing the untrimmed hair area. 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 description in 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 FIG. 15 shows a schematic structural diagram of an embodiment of the cutter head assembly of the present utility model;

[0028] Figure 2 FIG. 19 is an exploded view of an embodiment of the cutter head assembly of the present utility model;

[0029] Figure 3 FIG. 23 is another exploded view of an embodiment of the cutter head assembly of the present utility model;

[0030] Figure 4 is Figure 1 a cross-sectional view taken along line N-N shown in FIG. 29;

[0031] Figure 5 FIG. 33 is another perspective view of an embodiment of the cutter head assembly of the present utility model;

[0032] Figure 6 is Figure 1 a cross-sectional view taken along line P-P shown in FIG. 39;

[0033] Figure 7 Schematic diagram of a limit bracket for an embodiment;

[0034] Figure 8 Schematic diagram of a limit bracket for another embodiment;

[0035] Figure 9 Schematic diagram of the structure of another embodiment of the tool bit assembly of the present utility model;

[0036] Figure 10 For Figure 9 Exploded view of the tool bit assembly shown;

[0037] Figure 11 For Figure 9 Cross-sectional view taken along M-M of the one shown;

[0038] Figure 12 For Figure 9 Another angular view of the tool bit assembly shown;

[0039] Figure 13 For Figure 9 Schematic diagram of the limit bracket of the embodiment shown.

[0040] Explanation of the reference numerals in the drawings:

[0041] Label Name Label Name Label Name 100 Cutting head assembly 110 Cutting head 111 Limit convex part 112 Guide hole 120 Base 121 Magnet groove 122 Guide shaft 130 Limit bracket 131 Limit wall 1311 First limit surface 1312 Second limit surface 1313 Third limit surface 1314 Rib 1315 Limit part 132 Connecting plate 133 Connecting part 140 Fastener 150 Shell 151 Fixing hole 134 Avoidance space 123 Card slot 135 Hook 152 Limit slot 153 Top wall limit surface

[0042] 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

[0043] 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 them. When the combination of the technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0044] 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 position relationship and movement conditions between the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0045] 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", "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, or solution B, or the solution where A and B are satisfied simultaneously.

[0046] The present utility model provides a cutter head assembly 100 for a hair trimmer, such as a shaver, a hair clipper, etc.

[0047] In an embodiment of the present utility model, please refer to Figures 1 to 13 , the cutter head assembly includes a plurality of cutter heads 110 arranged side by side, a base 120, and a limit bracket 130. The plurality of cutter heads 110 are longitudinally and floatingly connected to the base 120. The limit bracket 130 is fixedly connected to the base 120. The limit bracket 130 includes a plurality of limit walls 131 arranged at intervals along the side-by-side direction of the plurality of cutter heads 110. One of the cutter heads 110 is arranged at intervals in the side-by-side direction between the two limit walls 131, and adjacent cutter heads 110 are separated by a limit wall 131.

[0048] By arranging the limit walls 131 between the cutter heads 110 in the cutter head assembly of the present utility model, with one of the cutter heads 110 arranged at intervals in the side-by-side direction between the two limit walls 131, adjacent cutter heads 110 are separated by the limit walls 131, preventing excessive shaking, thereby improving the movement stability of the cutter heads 110 and avoiding direct contact between adjacent cutter heads 110. When the cutter heads 110 shake in the side-by-side direction, the limit walls 131 will limit their shaking range, preventing the cutter heads 110 from continuing to shake in the direction of the abutting limit wall 131, thus preventing collisions between adjacent cutter heads 110, reducing the generation of noise, and enhancing the user experience. Through the isolation of the limit walls 131, it is ensured that each cutter head 110 can float independently without being interfered by adjacent cutter heads 110, making the trimming more thorough and uniform, thereby improving the smoothness and cleanliness of the trimming and reducing the untrimmed hair areas.

[0049] In an embodiment of the present utility model, the hair trimmer includes three cutter heads 110. Each cutter head 110 is longitudinally and floatingly connected to the base 120. The limiting bracket 130 is fixedly connected to the base 120. The limiting bracket 130 includes two limiting walls 131. The middle cutter head 110 is arranged between the two limiting walls 131 at intervals in the side-by-side direction. The two limiting walls 131 limit the swaying range of the middle cutter head 110 in the side-by-side direction, preventing it from colliding with the cutter heads 110 on both sides, and prolonging the service life of the cutter heads 110. In other embodiments, the hair trimmer may include five cutter heads 110, and the limiting bracket 130 includes four limiting walls 131, and there is a limiting wall 131 between every two adjacent cutter heads 110.

[0050] Further, referring to Figure 7 , a rib 1314 is provided on the wall surface of the limiting wall 110 facing the cutter head 110, and the rib 1314 extends longitudinally.

[0051] Among them, a rib 1314 extending longitudinally is provided on the wall surface of the limiting wall 131 facing the cutter head 110, and the cutter head 110 is clamped between two opposite ribs 1314, so that the contact between the cutter head 110 and the limiting wall 131 changes from surface contact to line contact, reducing the contact area between the cutter head 110 and the limiting wall 131, thereby reducing the friction between the two and reducing the noise.

[0052] Further, referring to Figure 5 , Figure 7 and Figure 8 , the limiting wall 131 includes a first limiting surface 1311 facing the base 120, and the first limiting surface 1311 is spaced from the base 120; the cutter head 110 is provided with a limiting convex portion 111 in the side-by-side direction, and the limiting convex portion 111 is located between the base 120 and the first limiting surface 1311, and the top wall of the limiting convex portion 111 abuts against the first limiting surface 1311 to limit the longitudinal floating range of the cutter head 110.

[0053] Among them, through the limiting convex portion 111 provided on the cutter head 110 in the side-by-side direction and the first limiting surface 1311 for limiting cooperation, the longitudinal floating range of the cutter head 110 is controlled, preventing the cutter head 110 from tilting towards the adjacent cutter head 110 due to excessive floating, thereby avoiding the collision and wear between the cutter heads 110 and prolonging the service life of the cutter heads 110. At the same time, by restricting the longitudinal floating range of the cutter head 110, the cutter head 110 is kept stable during trimming, avoiding tilting interference, thereby improving the accuracy and effect of hair trimming and ensuring the smoothness and cleanliness of trimming.

[0054] In an embodiment of the present utility model, the cutter heads 110 on both sides are provided with limiting convex portions 111 protruding along the side-by-side direction. The middle cutter head 110 is spaced between two limiting walls 131. The limiting convex portions 111 of the cutter heads 110 on both sides are respectively matched with the first limiting surface 1311 to limit the longitudinal floating range of the cutter heads 110 on both sides, and prevent the cutter heads 110 on both sides from tilting towards the middle cutter head 110 due to excessive floating. In some embodiments, the middle cutter head 110 may also be provided with a limiting convex portion 111 that is in limiting cooperation with the first limiting surface 1311.

[0055] Further, referring to Figure 2 and Figure 5 , the cutter head assembly 100 further includes a housing 150. The housing 150 is fixedly connected to the base 120. A plurality of cutter heads 110 are arranged in the housing 150. A limiting groove 152 is provided on the inner wall of the housing 150. The limiting groove 152 has a top wall limiting surface 153 facing the base 120. Limiting convex portions 111 are provided on one side of the two outermost cutter heads 110 among the plurality of cutter heads 110 facing the inner wall of the housing 150. The top wall of the limiting convex portion 111 abuts against the top wall limiting surface 153 to limit the longitudinal floating range of the cutter head 110.

[0056] Wherein, by respectively providing limiting convex portions 111 on the opposite sides of the outermost cutter head 110, the limiting cooperation between the two opposite limiting convex portions 111 and the first limiting surface 1311 and the top wall limiting surface 153 controls the longitudinal floating range of the cutter head 110, and prevents tilting and collision caused by excessive floating. Secondly, the limiting convex portions 111 are provided on the opposite sides of the outermost cutter head 110, which balances the force on the cutter head 110 during use, ensures the stability of the cutter head 110 during floating, and avoids tilting and instability caused by uneven force on one side, thereby improving the trimming effect and comfort.

[0057] In an embodiment of the present utility model, the cutter head assembly 100 includes three cutter heads 110. The middle cutter head 110 is spaced between two limiting walls 131. Limiting convex portions 111 are provided on one side of each cutter head 110 located on the opposite sides of the middle cutter head 110 facing the housing 150. The two limiting convex portions 111 located on the opposite sides of the cutter head 110 respectively abut against the first limiting surface 1311 and the top wall limiting surface 153, so that the cutter head 110 can float stably and avoid tilting caused by uneven force on one side.

[0058] Further, the limiting wall 131 further includes a second limiting surface 1312 adjacent to the first limiting surface 1311. The second limiting surface 1312 extends longitudinally. A limiting portion 1315 protrudes from the wall surface of the limiting wall 131 facing the base 120. The limiting portion 1315 has a third limiting surface 1313 opposite to and spaced from the second limiting surface 1312. The limiting convex portion 111 is located between the second limiting surface 1312 and the third limiting surface 1313.

[0059] During use, when the cutter head 110 is subjected to skin pressure, it may tilt and move along the length direction of the limit bracket 130. In this embodiment, a second limit surface 1312 adjacent to the first limit surface 1311 is provided. The second limit surface 1312 extends longitudinally. The limit portion 1315 protruding from the limit wall 131 has a third limit surface 1313 opposite to and spaced from the second limit surface 1312. By making the limit convex portion 111 located between the second limit surface 1312 and the third limit surface 1313, the movement of the limit convex portion 111 in the length direction of the limit bracket 130 is restricted. When the skin fits against the cutter head 110 and applies a certain pressure, the second limit surface 1312 and the third limit surface 1313 restrict the movement of the limit convex portion 111, thereby restricting the movement of the cutter head 110, preventing the cutter head 110 from moving excessively in the length direction of the limit bracket 130, resulting in unstable structure of the cutter head 110, ensuring the position of the cutter head 110 in the length direction is more stable, preventing the cutter head 110 from moving and tilting excessively, and prolonging the service life of the cutter head 110.

[0060] In one embodiment, the cutter head 110 is in a long strip shape. Opposite ends of any cutter head 110 along its length direction are both provided with guide holes 112. The guide holes 112 extend towards the base 120. The base 120 includes a plurality of guide shafts 122 that are in limit fit with the guide holes 112. Each guide shaft 122 is sleeved with an elastic member to enable the cutter head 110 to float longitudinally relative to the base 120; the limit bracket 130 is provided with an avoidance space 134 corresponding to the guide shaft 122, and the guide shaft 122 is inserted into the guide hole 112 through the avoidance space 134.

[0061] The guide holes 112 of the cutter head 110 along its length direction cooperate with the guide shafts 1 on the base 120, ensuring the precise positioning of the cutter head 110 during use and guiding the longitudinal floating of the cutter head 110. The avoidance space 134 allows the guide shaft 122 to move within a certain range, but at the same time restricts the excessive movement amplitude, which can reduce the unnecessary movement of the cutter head 110 during use. Secondly, each guide shaft 122 is sleeved with an elastic member to achieve the longitudinal floating of the cutter head 110. The elastic member can be elastic components such as springs and silica gels. For example, during use, when the cutter head 110 is subjected to skin pressure, the elastic force of the elastic member forms a force opposite to the pressure, so that the cutter head 110 always fits against the user's skin.

[0062] In one embodiment, the limiting bracket 130 includes two connecting portions 133 respectively connected to opposite ends of the limiting wall 131. An avoidance space 134 is formed in the connecting portion 133, and the connecting portion 133 is fixedly connected to the base. This arrangement helps to disperse the force on the limiting wall 131. For example, when the cutter head 110 abuts against the limiting wall 131, the force received can be dispersed to the two connecting portions 133, preventing damage caused by long-term concentrated force on the limiting wall 131 and improving the service life of the limiting bracket 130.

[0063] Furthermore, the limiting bracket 130 is detachably and fixedly connected to the base 120. With the detachable arrangement, users can easily remove the limiting bracket 130 from the base 120 for thorough cleaning and maintenance, preventing the accumulation of hair and dirt, maintaining the hygiene of the cutter head 110 and the base 120, and extending the service life. Secondly, users can conveniently replace a damaged limiting bracket 130 or the cutter head assembly without replacing the entire hair trimmer, reducing the maintenance cost and improving the service life and economy of the trimmer. In some embodiments, the limiting bracket 130 and the base 120 can be connected by screws. The base 120 is provided with screw holes, and the limiting bracket 130 is provided with screw holes matching the screw holes. In other embodiments, the limiting bracket 130 and the base 120 can also be connected by magnetic attraction.

[0064] Specifically, referring to Figure 10 and Figure 13 , in one embodiment, the connecting portion 133 includes a connecting plate 132. The connecting plate 132 includes a hook 135 extending towards the base 120, and the base 120 is provided with a slot 123 engaged with the hook 135.

[0065] In this embodiment, the limiting bracket 130 is snap-fitted to the base 120. The hook 135 extends towards the base 120 and engages with the slot 123 to form a firm connection, which can effectively prevent the limiting bracket 130 from shaking or loosening during use, improving the stability and firmness of the connection and ensuring the reliability of the hair trimmer during use. Secondly, the design of the hook 135 enables users to quickly disassemble and assemble the limiting bracket 130 through simple snapping and unsnapping operations without additional tools, improving the convenience of cleaning and maintenance and saving time and effort.

[0066] Furthermore, the width of the connecting plate 132 is greater than the width between two adjacent limiting walls 131.

[0067] The width of the connecting plate 132 is greater than the width between two adjacent limiting walls 131, increasing the contact area of the connecting plate 132. The larger area of the connecting plate 132 provides a greater contact and engagement area, making the connection between the limiting bracket 130 and the base 120 more stable, effectively preventing shaking and loosening, and improving the stability and firmness of the trimmer. If the area of the connecting plate 132 is small, the connection between the limiting bracket 130 and the base 120 may not be stable enough, resulting in shaking or loosening during use. Secondly, the larger area of the connecting plate 132 can disperse the force more evenly, enhancing the load-bearing capacity of the limiting bracket 130 and the base 120, reducing local stress concentration, preventing component deformation or damage, and extending the service life of the hair trimmer.

[0068] Reference Figure 3 , in another embodiment, the limiting bracket 130 is in a long strip shape, and the cutter head assembly 100 further includes a plurality of fasteners 140. The opposite ends of the limiting bracket 130 along its length direction are respectively fixedly connected to the base 120 through the fasteners 140.

[0069] In this embodiment, the fastener 140 is a bolt, and the threaded fastener 140 is inserted and fixed from the base 120 to the limiting bracket 130. The threaded fastener 140 provides a reliable mechanical connection. By rotating the thread, a strong clamping force can be achieved, making the limiting bracket 130 firmly fixed on the base 120, effectively preventing loosening and displacement, and improving the stability and firmness of the trimmer. Secondly, the hair trimmer will bear a certain force during use. If the connection is not strong enough, it may cause breakage or damage. The threaded fastener 140 provides a high-strength fixation through threaded connection, can withstand a large force, is not easy to break or damage, and improves the durability and safety of the hair trimmer

[0070] Furthermore, reference Figure 6 , a plurality of fixing holes 151 facing the base 120 are formed on the inner wall of the circumferential side of the housing 150, and the fasteners 140 are inserted into the fixing holes 151 to fixedly connect the base 120, the limiting bracket 130 and the housing 150.

[0071] In this embodiment, the fasteners 140 are inserted into the fixing holes 151 of the housing 150, making the connection between the housing 150 and the base 120 more stable, effectively preventing shaking and loosening of the cutter head assembly during use, and improving the firmness and stability of the overall structure. Secondly, the corresponding setting of the fixing holes 151 and the fasteners 140 provides a clear installation position and path, making the assembly process more convenient and accurate, reducing the assembly time and difficulty, and improving the production efficiency.

[0072] In one embodiment, the base 120 is provided with a magnet groove 121, the magnet groove 121 is arranged corresponding to the connecting portion 133, and the connecting portion 133 covers the magnet groove 121.

[0073] In the prior art, hair trimmers usually use glue to stick magnets in the magnet groove 121. If the glue fails or the hair trimmer drops and impacts, the magnet will fall off from the magnet groove 121. The embodiment of the present utility model adopts the method of pressing the connecting portion 133 against the magnet groove 121, ensuring that the magnet can be firmly embedded in the magnet groove 121 and is not easy to fall off. The magnetic connection provides a fast and reliable assembly method while maintaining sufficient connection force to ensure that the hair trimmer will not be disturbed or damaged due to the magnet falling off during use.

[0074] The present utility model also proposes a hair trimmer, which includes the cutter head assembly 100 and a driving device as described above, and the output shaft of the driving device is connected to the cutter head assembly 100.

[0075] The present utility model also proposes a hair trimmer, which includes a driving device and a cutter head assembly 100. The specific structure of the cutter head assembly refers to the above embodiment. Since this hair trimmer adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated herein one by one. Among them, the output shaft of the driving device is connected to the cutter head assembly 100. This hair trimmer can specifically be a shaver, a hair clipper, a hair trimmer, etc., which is not specifically limited herein.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than 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 recorded in the foregoing embodiments, or perform equivalent replacements on 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 cutter head assembly for a hair trimmer, characterized in that, Comprising: A plurality of cutter heads arranged side by side; A base, and the plurality of cutter heads are longitudinally and floatingly connected to the base; And A limit bracket fixedly connected to the base, the limit bracket includes a plurality of limit walls arranged at intervals along the side-by-side direction of the plurality of cutter heads, one of the cutter heads is arranged between the two limit walls, and adjacent two cutter heads are separated by one of the limit walls.

2. The cutter head assembly according to claim 1, wherein The limit wall includes a first limit surface facing the base, and the first limit surface is arranged at an interval from the base; The cutter head is provided with a limit convex portion along the side-by-side direction, the limit convex portion is located between the base and the first limit surface, and the top wall of the limit convex portion abuts against the first limit surface to limit the longitudinal floating range of the cutter head.

3. The cutter head assembly according to claim 2, wherein, The cutter head assembly further includes a housing fixedly connected to the base, and the plurality of cutter heads are arranged in the housing; The inner wall of the housing is provided with a limit groove having a top wall limit surface facing the base, and the two outermost cutter heads among the plurality of cutter heads are respectively provided with the limit convex portions on the side facing the inner wall of the housing, and the top wall of the limit convex portion abuts against the top wall limit surface to limit the longitudinal floating range of the cutter head.

4. The cutter head assembly according to claim 2, wherein, The limit wall further includes a second limit surface adjacent to the first limit surface, and the second limit surface extends longitudinally; A limit portion protrudes from the wall surface of the limit wall facing the base, and the limit portion has a third limit surface opposite to and spaced from the second limit surface, and the limit convex portion is located between the second limit surface and the third limit surface.

5. The cutter head assembly according to claim 1, wherein, The wall surface of the limit wall facing the cutter head is provided with a rib extending longitudinally.

6. The cutter head assembly according to claim 1, wherein, The limit bracket includes two connecting portions respectively connected to opposite ends of the limit wall, and the connecting portions are fixedly connected to the base.

7. The cutter head assembly according to claim 6, characterized in that, The connecting portion includes a connecting plate, the connecting plate is provided with a hook extending towards the base, and the base is provided with a clamping groove engaged with the hook.

8. The cutter head assembly according to claim 7, characterized in that, The width of the connecting plate is greater than the width between adjacent two limit walls.

9. The cutter head assembly according to claim 6, characterized in that, The cutter head assembly further includes a plurality of fasteners, and the two connecting portions are respectively fixedly connected to the base through the fasteners; The cutter head assembly further includes a housing, a plurality of cutter heads are installed in the housing, a plurality of fixing holes facing the base are opened on the inner wall of the circumferential side of the housing, and the fasteners are inserted into the fixing holes to fixedly connect the base, the limit bracket and the housing.

10. The cutter head assembly according to claim 6, characterized in that, Any one of the cutter heads is provided with guiding holes at opposite ends along the length direction of the limit bracket, the guiding holes extend longitudinally, and the base includes a plurality of guiding shafts in limiting fit with the guiding holes; The connecting portion is provided with an avoidance space corresponding to the guiding shaft, and the guiding shaft is inserted into the guiding hole through the avoidance space.

11. The cutter head assembly according to claim 6, characterized in that, The base is provided with a magnet groove corresponding to the connecting portion, and the connecting portion covers the magnet groove.

12. A hair trimmer, characterized in that, Comprising the cutter head assembly according to any one of claims 1 to 11 and a driving device, and an output shaft of the driving device is connected to the cutter head assembly.

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