Blade, cutter head structure, and hair trimmer

Abstract

A blade, comprising a body (1). One side of the body is provided with a contact surface (11); the roughness of the contact surface is a, and a satisfies: 0.05 µm ≤ a ≤ 0.3 µm; and the contact surface is provided with a channel (12) for exhausting air and guiding oil. By optimizing the roughness and providing the channel, the blade has higher sharpness, achieving smoother cutting. The roughness of the contact surface is controlled between 0.05 µm and 0.3 µm, so that the surface is smooth enough to reduce friction. The design of the channel provides an exhaust path for the contact surface, effectively solving the problem of vacuum absorption caused by high smoothness, reducing the current required for cutting, reducing power consumption and temperature rise, and improving energy efficiency. Further disclosed are a cutter head structure and a hair trimmer.

Description

A blade, a blade head structure, and a hair trimmer Technical Field

[0001] This utility model relates to the field of hair trimmer technology, specifically to a blade, a blade head structure, and a hair trimmer. Background Technology

[0002] Currently, to maintain sharpness and control temperature rise, the surface roughness of cutting tools is traditionally controlled within the range of 0.35μm to 0.45μm. Further increasing the surface roughness, resulting in a smoother surface, while improving the blade's sharpness, can also create a mirror-like effect, leading to vacuum adhesion. This adhesion increases the current required for cutting and raises the blade's temperature, thus affecting its performance. Utility Model Content

[0003] To address at least one of the aforementioned problems, this utility model first provides a blade comprising a body, wherein a contact surface is provided on one side of the body, the roughness of the contact surface being a, wherein a satisfies: 0.05μm≤a≤0.3μm; and the contact surface is provided with channels for venting and guiding oil.

[0004] Optionally, 'a' satisfies: 0.1μm≤a≤0.2μm; the depth and / or width of the channel is 'b', where 'b' satisfies: 0.005mm≤b≤0.05mm.

[0005] Optionally, the channel covers the entire contact surface.

[0006] Optionally, the channel includes a plurality of interconnected regular hexagonal grooves.

[0007] Optionally, the body is provided with a plurality of spaced-apart cutting teeth, and the channel further includes a plurality of spaced-apart straight grooves, the straight grooves being connected to the regular hexagonal grooves, and the straight grooves being distributed at the positions of the cutting teeth.

[0008] Optionally, the body is provided with a plurality of spaced-apart cutting teeth, each of which has a cutting edge on the side near the contact surface. The cutting edge is fish-scale patterned so that the cutting edge is alternately thick and thin.

[0009] Optionally, the sidewalls of the cutting teeth are alternately provided with concave and convex portions, and adjacent concave and convex portions are smoothly transitioned.

[0010] Compared to existing technologies, the blade in this invention has higher sharpness and smoother cutting by optimizing roughness and setting grooves. The surface roughness is controlled between 0.05μm and 0.3μm, making the surface smooth enough to reduce friction. The groove design provides an exhaust path for the contact surface, effectively solving the vacuum adsorption problem caused by high surface finish, reducing the current required for cutting, reducing power consumption and temperature rise, and improving energy efficiency.

[0011] In addition, this utility model provides a blade head structure, including the blade as described above.

[0012] Optionally, the assembly further includes a moving blade assembly, which includes a moving blade holder and a moving blade that is reciprocally connected to the blade. The blade is a fixed blade, and one side of the fixed blade has a contact surface that contacts the moving blade. The fixed blade has an inner side and an outer side, with the contact surface located on the inner side. The inner side has a recess, and a fixing block is installed in the recess. The fixing block has a threaded hole and also includes a screw. The moving blade holder is fixed to the fixed blade by the engagement of the screw and the threaded hole. The outer side is a flat surface.

[0013] Compared with the prior art, the blade structure described in this utility model has the same advantages as the blade described above compared with the prior art, and will not be repeated here.

[0014] In addition, this utility model provides a hair trimmer, including the blades described above.

[0015] Compared to existing technologies, the hair trimmer described in this utility model has the same advantages as the blades mentioned above, which will not be repeated here. Attached Figure Description

[0016] Figure 1 is a structural diagram of the blade according to an embodiment of the present invention;

[0017] Figure 2 is a structural diagram of the blade according to an embodiment of this utility model;

[0018] Figure 3 is an enlarged view of part A in Figure 2;

[0019] Figure 4 is a structural diagram of the assembly of the blade and the fixing block according to an embodiment of the present invention;

[0020] Figure 5 is an enlarged view of part B in Figure 4;

[0021] Figure 6 is a structural diagram of the cutter head structure of an embodiment of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Body; 11. Contact surface; 12. Channel; 121. Regular hexagonal groove; 122. Straight groove; 13. Cutting tooth; 131. Cutting edge; 1311. Recess; 1312. Protrusion; 14. Inner side; 141. Pit; 15. Outer side; 2. Moving tool assembly; 21. Moving tool holder; 22. Moving tool; 3. Fixing block; 31. Threaded hole. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.

[0026] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0027] This utility model provides a blade, as shown in Figures 1 to 5, which includes a body 1. One side of the body 1 is provided with a contact surface 11. The roughness of the contact surface 11 is a, and a satisfies: 0.05μm≤a≤0.3μm. The contact surface 11 is provided with channels 12 for venting and guiding oil.

[0028] The blade body 1 can be either a moving blade 22 or a fixed blade, depending on its installation method and function in the cutter head structure. In the cutter head structure, the moving blade 22 and the fixed blade are installed opposite each other and reciprocate during use. A contact surface 11 is provided on one side of the blade body 1. This contact surface 11 refers to the part where the moving blade 22 and the fixed blade directly contact each other during relative motion. The roughness of the contact surface 11 of the body 1 is controlled within the range of 0.05μm to 0.3μm. Compared with the traditional roughness range, this lower roughness range provides a smoother surface, which helps to further enhance the sharpness and cutting efficiency of the blade.

[0029] The contact surface 11 of the cutting tool is designed with channels 12 for venting and guiding oil. The channels 12 are distributed on the contact surface 11 so that during the reciprocating motion of the fixed tool and the moving tool 22, the vacuum on the contact surface 11 can be quickly eliminated by the venting function of the channels 12 to prevent vacuum adsorption. The channels 12 also have an oil guiding function, which can guide the lubricating oil to the contact surface, reduce the friction between the moving tool 22 and the fixed tool, thereby improving the smoothness of the cutting tool, and also prevent heat from accumulating during the reciprocating motion, thereby effectively reducing the temperature rise of the cutting tool. The channels 12 contain lubricating oil, and the oil guiding function of the channels 12 brings better lubrication effect, making the cutting process of the cutting tool smoother and more comfortable, avoiding the discomfort caused by friction, and providing a better user experience.

[0030] In this embodiment, the blade has higher sharpness and smoother cutting by optimizing the roughness and setting the groove 12. The roughness of the contact surface 11 is controlled between 0.05μm and 0.3μm to make the surface smooth enough to reduce friction. The design of the groove 12 provides an exhaust path for the contact surface 11, which effectively solves the vacuum adsorption problem caused by high surface finish, reduces the current required for cutting, reduces power consumption and temperature rise, and improves energy efficiency.

[0031] Optionally, as shown in Figure 5, the roughness a of the contact surface 11 is further controlled between 0.1μm and 0.2μm, which makes the surface smoother and allows for better control of the sharpness. The depth of the groove 12 is b, which satisfies the condition that 0.005mm ≤ b ≤ 0.05mm. The depth of the groove 12 refers to the depth of the groove that is recessed inward from the contact surface 11 towards the thickness of the cutting tool. This depth range of the groove 12 helps to expel gas in time during the cutting process, reducing the adsorption effect. Furthermore, through precise control of the groove 12 depth, the oil guiding effect is more stable, which helps to form a thin lubricating oil film on the cutting surface, reducing friction and cutting tool wear.

[0032] Optionally, the width of the channel 12 is b, where b satisfies: 0.005mm≤b≤0.05mm. The width of the channel 12 refers to the width between the two walls of the channel 12. This width range of the channel 12 can reduce the adsorption effect, avoid increasing the roughness of the contact surface 11, and ensure that the lubricating oil flows normally in the channel 12.

[0033] In this embodiment, the precisely controlled roughness and groove 12 depth make the blade sharper and smoother during cutting, improving the cutting efficiency of the blade; through the precise groove 12 depth design, the gas generated by the blade during cutting can be quickly discharged, avoiding the current and power consumption caused by adsorption, making the hair trimmer more energy-efficient; the groove 12 also has a more stable oil guiding effect, effectively reducing the friction and wear of the blade.

[0034] Optionally, as shown in Figure 1, the grooves 12 cover the contact surface 11, thereby more evenly covering the entire cutting surface and avoiding the problems of local adsorption and uneven friction. The uniformly distributed groove structure 12 on the contact surface 11 enables the entire blade surface to have venting and oil guiding functions, forming a complete venting and oil guiding network, further reducing the vacuum adsorption phenomenon that occurs during cutting, thereby reducing the current demand. The fully distributed grooves 12 achieve a uniform oil guiding effect, making the blade have low friction and good smoothness during contact.

[0035] Optionally, as shown in Figures 1, 4, and 5, the channel 12 includes multiple interconnected regular hexagonal grooves 121. The channel 12 on the contact surface 11 is formed by multiple regular hexagonal grooves 121 arranged in a manner that allows the hexagons to communicate with each other, forming a continuous honeycomb network structure. This arrangement effectively covers the contact surface 11 of the cutting tool, enhancing the comprehensiveness and uniformity of the channel 12 in terms of venting and oil guiding functions. The shape of the regular hexagonal grooves 121, with their edges connected, maximizes the utilization of the area of ​​the contact surface 11, making the groove structure compact and stable. This also allows gas to be quickly discharged from any contact position, further reducing the vacuum adsorption phenomenon generated during cutting and improving the working efficiency of the cutting tool. The arrangement of multiple regular hexagonal grooves 121 also provides abundant oil guiding paths, allowing lubricating oil to evenly cover the contact surface 11, reducing friction and wear, and improving the smoothness of cutting. Alternatively, two adjacent regular hexagonal grooves 121 can be connected by a straight groove.

[0036] Optionally, as shown in Figures 1 to 5, the body 1 is provided with a plurality of spaced-apart cutting teeth 13, and the channel 12 further includes a plurality of spaced-apart linear grooves 122. The linear grooves 122 are connected to the regular hexagonal grooves 121, and the linear grooves 122 are distributed at the positions of the cutting teeth 13. A plurality of spaced-apart linear grooves 122 are arranged on the contact surface 11 of the cutting tooth 13 area. Each linear groove 122 extends along the length of the cutting tooth 13, ensuring that the cutting tooth 13 also has efficient air venting and oil guiding capabilities during the cutting process. This results in smoother air venting and more uniform lubrication distribution during cutting, improving cutting smoothness and precision, reducing friction, and enhancing durability.

[0037] Optionally, as shown in Figures 1 to 5, the body 1 is provided with a plurality of spaced-apart cutting teeth 13, and each cutting tooth 13 is provided with a cutting edge 131 on the side near the contact surface 11. The cutting edge 131 is fish scale patterned so that the cutting edge 131 is alternately thick and thin.

[0038] Among them, the cutting edge 131 of the blade tooth 13 near the contact surface 11 is processed into a fish scale pattern, forming a surface with alternating thicknesses. The fish scale pattern of the cutting edge 131 with its varying thicknesses allows the cutting edge 131 to contact the hair at different pressures and angles during operation, thereby effectively reducing friction and cutting resistance. Specifically, the thinner parts help the hair to retreat, while the resistance generated when transitioning to the thicker parts helps to stabilize the hair at the blade edge, facilitating efficient cutting and reducing cutting resistance, making the cutting process easier and more efficient. The fish scale pattern makes the cutting part sharper, improving the cutting ability of the blade tooth 13 through a smaller angle.

[0039] Optionally, as shown in Figures 2 and 3, the sidewalls of the blade 13 are alternately provided with concave portions 1311 and convex portions 1312, with adjacent concave portions 1311 and convex portions 1312 smoothly transitioning; the sidewalls of the blade 13 are alternately provided with concave portions 1311 and convex portions 1312, and each concave and convex portion 1312 is connected by a smooth transition structure to form a continuous wavy sidewall, which adds a three-dimensional texture to the sidewalls of the blade 13, effectively optimizing the capture and segmentation effect of the blade 13 on hair during the trimming process; the smooth transition between the concave portions 1311 and convex portions 1312 reduces the resistance of the blade 13 during the cutting process, avoids hair jamming, and improves cutting efficiency and stability.

[0040] Another embodiment of this utility model provides a blade head structure, including the blade described above.

[0041] In this embodiment, the blade structure, through optimized roughness and the setting of the groove 12, has higher blade sharpness and smoother cutting. The roughness of the contact surface 11 is controlled between 0.05μm and 0.3μm, making the surface smooth enough to reduce friction. The design of the groove 12 provides an exhaust path for the contact surface 11, effectively solving the vacuum adsorption problem caused by high surface finish, reducing the current required for cutting, reducing power consumption and temperature rise, and improving energy efficiency.

[0042] Optionally, as shown in Figures 1 to 6, the device further includes a moving blade assembly 2. The moving blade assembly 2 includes a moving blade holder 21 and a moving blade 22 that is reciprocally connected to the blade. The blade is a fixed blade, and one side of the fixed blade has a contact surface 11 that contacts the moving blade 22. The fixed blade has an inner side surface 14 and an outer side surface 15. The contact surface 11 is located on the inner side surface 14. The inner side surface 14 has a recess 141, and a fixing block 3 is installed in the recess 141. The fixing block 3 has a threaded hole 31 and also includes a screw. The moving blade holder 21 is fixed to the fixed blade by the engagement of the screw and the threaded hole 31. The outer side surface 15 is a flat surface.

[0043] The fixed connection between the moving blade holder 21 and the fixed blade is achieved through the cooperation of screws and threaded holes 31, which ensures the stability of the moving blade 22 during reciprocating movement, reduces the shaking that may occur during cutting, and thus improves the cutting accuracy. The contact surface 11 is located on the inner side 14 of the fixed blade, ensuring that the moving blade 22 smoothly cooperates with the contact surface 11 during reciprocating motion. The outer side 15 of the fixed blade is the part of the blade head structure that directly contacts the skin. The flat surface design, that is, the outer side 15 of the fixed blade is a whole without screw holes, greatly improves the skin feel and aesthetics.

[0044] Another embodiment of the present invention provides a hair trimmer, including the blades described above.

[0045] The hair trimmer in this embodiment has higher blade sharpness and smoother cutting by optimizing roughness and setting groove 12. The roughness of the contact surface 11 is controlled between 0.05μm and 0.3μm to make the surface smooth enough to reduce friction. The design of groove 12 provides an exhaust path for the contact surface 11, effectively solving the vacuum adsorption problem caused by high surface finish, reducing the current required for cutting, reducing power consumption and temperature rise, and improving energy efficiency.

[0046] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. A blade, characterized in that, Includes a body (1), one side of which is provided with a contact surface (11), the roughness of which is a, and a satisfies: 0.05μm≤a≤0.3μm; the contact surface (11) is provided with channels (12) for venting and guiding oil.

2. The blade according to claim 1, characterized in that, The a satisfies: 0.1μm≤a≤0.2μm; the depth and / or width of the channel (12) is b, and the b satisfies: 0.005mm≤b≤0.05mm.

3. The blade according to claim 1, characterized in that, The channel (12) covers the contact surface (11).

4. The blade according to claim 1, characterized in that, The channel (12) includes a plurality of interconnected regular hexagonal grooves (121).

5. The blade according to claim 4, characterized in that, The body (1) is provided with a plurality of spaced-apart cutting teeth (13), and the channel (12) further includes a plurality of spaced-apart straight grooves (122). The straight grooves (122) are connected to the regular hexagonal grooves (121), and the straight grooves (122) are distributed at the positions of the cutting teeth (13).

6. The blade according to any one of claims 1-5, characterized in that, The body (1) is provided with a plurality of spaced-apart cutting teeth (13), and each cutting tooth (13) is provided with a cutting edge (131) on the side near the contact surface (11). The cutting edge (131) is fish scale pattern so that the cutting edge (131) is alternately thick and thin.

7. The blade according to claim 6, characterized in that, The sidewalls of the blade (13) are alternately provided with recesses (1311) and protrusions (1312), and adjacent recesses (1311) and protrusions (1312) are smoothly transitioned.

8. A blade head structure, characterized in that, Includes the blade as described in any one of claims 1-7.

9. The cutter head structure according to claim 8, characterized in that, It also includes a moving blade assembly (2), which includes a moving blade holder (21) and a moving blade (22) that is reciprocally connected to the blade. The blade is a fixed blade, and one side of the fixed blade is provided with a contact surface (11). The contact surface (11) contacts the moving blade (22). The fixed blade has an inner side surface (14) and an outer side surface (15). The contact surface (11) is located on the inner side surface (14). The inner side surface (14) is provided with a recess (141). A fixing block (3) is installed in the recess (141). The fixing block (3) is provided with a threaded hole (31) and also includes a screw. The moving blade holder (21) is fixed to the fixed blade by the cooperation of the screw and the threaded hole (31). The outer side surface (15) is a flat surface.

10. A hair trimmer, characterized in that, Includes the blade as described in any one of claims 1-7.

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