Body hair trimming blade capable of leaving hair roots, trimmer head, and hair trimmer

Abstract

Disclosed are a body hair trimming blade capable of leaving hair roots, a trimmer head, and a hair trimmer. The trimming blade comprises a fixed blade (1) and a movable blade (2), wherein the fixed blade is adapted to be fixedly connected to the hair trimmer; the movable blade is adapted to be movably connected to the hair trimmer and abut against the fixed blade; the fixed blade has a thickness of 0.15 mm; the fixed blade is provided with a plurality of fixed blade teeth (11) spaced apart on the fixed blade, the distance between two adjacent fixed blade teeth being 0.4 mm to 0.5 mm; and during trimming, the side of the fixed blade away from the movable blade is in contact with the skin, and the movable blade moves relative to the fixed blade so as to trim hair located between the two adjacent fixed blade teeth. When trimming body hair, the blade can leave roots of 0.15 mm, making the blade less likely to cut the skin, achieving higher trimming efficiency and longer service life. The trimmer head has a compact and flat structure, facilitating the precise trimming of body hair.

Description

A hair trimming blade with hair retention, a trimming scissor head, and a hair trimmer. Technical Field

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

[0002] Some hair trimmers can be used to trim body hair. Existing manual razors have a short stubble length of ≤0.1mm, and the corresponding blade thickness is also relatively thin, which can easily scratch the skin when trimming body hair. Ultra-thin razors have a short stubble length of ≤0.15mm, and the blade thickness at this stubble length is slightly thicker than that of manual razors, making it less likely to scratch the skin. However, the tooth spacing on the ultra-thin razor blade is 0.2mm, which results in less hair intake, slower speed when trimming large areas of hair, and lower trimming efficiency. Utility Model Content

[0003] To address at least one of the aforementioned problems, this utility model provides a hair trimming scissor head that retains hair roots, comprising a fixed blade and a movable blade. The fixed blade is adapted to be fixedly connected to a hair trimmer, and the movable blade is adapted to be movably connected to the hair trimmer and abut against the fixed blade. The fixed blade has a thickness of 0.15 mm and is provided with fixed teeth. Multiple fixed teeth are spaced apart on the fixed blade, and the distance between two adjacent fixed teeth is 0.4 mm to 0.5 mm. During trimming, the side of the fixed blade away from the movable blade contacts the skin, and the movable blade moves relative to the fixed blade to trim the hair located between two adjacent fixed teeth.

[0004] Optionally, the thickness of the moving blade is 0.2 mm.

[0005] Optionally, the fixed blade tooth is provided with a connecting hook on the side away from the fixed blade, the connecting hook being adapted to be fixedly connected to the blade head or hair trimmer, and the connecting hook being spaced apart from the side of the fixed blade away from the moving blade.

[0006] Optionally, the moving blade is fixedly provided with moving blade teeth, and multiple moving blade teeth are spaced apart on the moving blade. The opening between two adjacent moving blade teeth is a large-angle V-shaped opening. When the moving blade moves, the moving blade teeth cooperate with the corresponding fixed blade teeth to trim the hair between them.

[0007] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0008] 1. When trimming body hair and leaving a root length of 0.15mm, the fixed blade is slightly thicker than the 0.1mm blade, making it less likely to scratch the skin. In addition, the tooth pitch of the fixed blade is increased, which increases the amount of hair that can be cut, thereby improving the trimming speed and efficiency when trimming large areas of body hair.

[0009] 2. Since the thickness of the fixed blade is 0.15mm, as long as the height of the protrusion on the skin between the two fixed blade teeth is less than 0.15mm, the protrusion is at a safe distance and will not be scratched.

[0010] 3. Since the opening between two adjacent moving blades is a large-angle V-shaped opening, as long as the height of the protrusion on the skin between the two fixed blades does not exceed the upper surface of the moving blades, the skin will be squeezed out by the moving blades during the movement of the moving blades and will be within the limit of safety.

[0011] 4. After grinding, the fixed and moving blades have sharper cutting edges and a longer service life;

[0012] 5. The connecting hook acts as a hook after connecting to the blade or hair trimmer, making the fixed blade more stable and secure after installation. At the same time, the connecting hook does not protrude from the side of the fixed blade that contacts the skin, thus ensuring that the fixed blade can fit more closely to the skin and that the length of the hair left after trimming is more uniform.

[0013] In addition, this utility model provides a trimming scissor head, including the body hair trimming blade described above.

[0014] Optionally, the trimmer head also includes a blade holder, which is flat and suitable for connection with the hair trimmer. A blade assembly groove is provided on one side of the blade holder. The fixed blade is located at the opening of the blade assembly groove and is fixedly connected to the blade holder. The movable blade is slidably installed in the blade assembly groove. During trimming, the side of the fixed blade away from the bottom of the blade assembly groove contacts the skin.

[0015] Optionally, the outer wall of the blade holder is provided with a plurality of hair inlet channels at intervals, each hair inlet channel being interconnected with the gap between two adjacent fixed blade teeth, and the width of the hair inlet channel being greater than or equal to the distance between two adjacent fixed blade teeth.

[0016] Optionally, the moving blade is provided with a directional plate on the side away from the fixed blade, the bottom of the blade assembly groove is provided with a directional groove, and the directional plate is inserted into the directional groove and moves within the directional groove.

[0017] Optionally, a tension spring is provided on the side of the moving blade away from the fixed blade, and the side of the tension spring away from the fixed blade abuts against the bottom of the blade assembly groove to drive the moving blade to press against the fixed blade.

[0018] Compared with the prior art, in addition to the same advantages as the aforementioned hair-retaining trimming blades, this utility model also has the following beneficial effects:

[0019] 1. The trimmer head has a compact and flat structure, which makes it easy to trim body hair in certain areas with precision.

[0020] 2. During the movement of the moving blade, it is limited by the cooperation of the guide plate and the guide groove, which enables stable directional movement and prevents deviation. At the same time, the moving blade is kept in a tight state against the fixed blade under the action of the tension spring, so the hair trimming is smoother and less likely to cause hair to get stuck.

[0021] In addition, this utility model provides a hair trimmer, including the body hair trimming blade with hair retention as described above. Compared with the prior art, the hair trimmer of this utility model has the same advantages as the body hair trimming blade with hair retention as described above, which will not be repeated here. Attached Figure Description

[0022] Figure 1 is a structural diagram of the fixed blade and the moving blade in an embodiment of this utility model;

[0023] Figure 2 is an exploded view of the fixed blade and the moving blade in the embodiment of this utility model;

[0024] Figure 3 is a structural diagram of the fixed blade, moving blade, blade support and connecting support in an embodiment of this utility model;

[0025] Figure 4 is a structural diagram of the fixed blade, the movable blade, and the blade support in an embodiment of this utility model.

[0026] Figure 5 is a structural diagram of the fixed blade, the moving blade, and the blade support in an embodiment of this utility model.

[0027] Explanation of reference numerals in the attached drawings: 1. Fixed blade; 11. Fixed blade tooth; 12. Connecting hook; 2. Moving blade; 21. Moving blade tooth; 22. Orientation plate; 23. Tension spring; 3. Blade support; 31. Blade assembly slot; 32. Hair inlet channel; 33. Orientation slot; 34. Drive slot; 4. Connecting bracket. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] 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.

[0031] The present application will be further described in detail below with reference to Figures 1-5.

[0032] In a first aspect, this utility model provides a body hair trimming blade that retains hair at the base. Referring to Figures 1 and 2, the body hair trimming blade head includes a fixed blade 1 and a movable blade 2. The fixed blade 1 is adapted to be fixedly connected to a hair trimmer; the movable blade 2 is adapted to be movably connected to the hair trimmer and abuts against the fixed blade 1 to trim the hair. The fixed blade 1 is provided with fixed teeth 11, and multiple fixed teeth 11 are spaced apart on the fixed blade 1; the movable blade 2 is fixedly provided with movable teeth 21, and multiple movable teeth 21 are spaced apart on the movable blade 2. When trimming body hair, the side of the fixed blade 1 away from the movable blade 2 contacts the skin, and the movable blade 2 moves relative to the fixed blade 1, and the movable teeth 21 trim the hair located between two adjacent fixed teeth 11.

[0033] Specifically, in this embodiment, both the fixed blade 1 and the moving blade 2 are rectangular blades. The fixed blade teeth 11 are integrally formed in the width direction of the fixed blade 1 and are spaced apart along the length direction of the fixed blade 1. The fixed blade 1 has fixed blade teeth 11 in both width directions, so that when the fixed blade teeth 11 on one side are not sharp, the direction can be reversed to use the other side for trimming.

[0034] The thickness of the fixed blade 1 is 0.15mm, and the thickness of the fixed blade teeth 11 is the same as the thickness of the fixed blade 1. The distance between two adjacent fixed blade teeth 11 is 0.4mm-0.5mm, and in this embodiment, the distance between two adjacent fixed blade teeth 11 is preferably 0.5mm. According to the actual situation and design standards, if the distance between two adjacent fixed blade teeth 11 is greater than 0.5mm, the thickness of the fixed blade 1 needs to be increased to more than 0.15mm, and the corresponding length of the trimmed body hair will be greater than 0.15mm, which will not be the optimal trimming length for body hair.

[0035] Referring to Figures 1 and 2, each fixed blade tooth 11 has a connecting hook 12 integrally formed at the end away from the fixed blade 1. The connecting hook 12 is bent away from the side of the fixed blade 1 that contacts the skin, forming a hook with its opening facing the skin. The connecting hooks 12 are spaced apart from the side of the fixed blade 1 that contacts the skin. On the one hand, the fixed blade 1 can be fixedly connected to the blade head or hair trimmer through the connecting hooks 12, making the fixed blade 1 more stable and secure after installation. On the other hand, the connecting hooks 12 do not protrude from the side of the fixed blade 1 that contacts the skin, thereby ensuring that the fixed blade 1 can fit more closely to the skin, resulting in a more uniform length of hair left after trimming.

[0036] Referring to Figures 1 and 2, since the fixed blade 1 has fixed teeth 11 on both sides of its width, the corresponding moving blade 2 has moving teeth 21 in both width directions, with the moving teeth 21 on the same side arranged at intervals along the length of the moving blade 2. In this embodiment, the thickness of the moving blade 2 is preferably 0.2 mm, and the thickness of the moving teeth 21 is the same as the thickness of the moving blade 2. The opening between two adjacent moving teeth 21 is a large-angle V-shaped opening. When the moving blade 2 moves, the moving teeth 21 cooperate with the corresponding fixed teeth 11 to trim the hair between them.

[0037] The implementation principle of the body hair trimming scissors head according to this application embodiment is as follows: The thickness of the fixed blade 1 is 0.15mm, which is slightly thicker than the 0.1mm blade. As long as the height of the protrusion on the skin between the two fixed blade teeth 11 is less than 0.15mm, the protrusion is at a safe distance and will not be scratched. The opening between the moving blade teeth 21 is set as a large-angle V-shaped opening. When the height of the protrusion on the skin between the two fixed blade teeth 11 does not exceed the upper surface of the moving blade teeth 21, the skin will be squeezed out by the moving blade 2 during the movement of the moving blade 2 and kept within the limit of safety, thus making it less likely to scratch the skin when trimming body hair. The tooth spacing of the fixed blade 1 is increased, which increases the amount of hair that can be cut, thereby improving the trimming speed and efficiency when trimming large areas of body hair.

[0038] Secondly, another embodiment of this utility model provides a trimming head, on which the aforementioned hair-leaving trimming blade is mounted. Referring to FIG3, the trimming head includes a blade holder 3 and a connecting bracket 4. The blade holder 3 is a flat rectangular bracket. One end of the connecting bracket 4 is connected to the blade holder 3, and the other end is connected to the hair trimmer. The length of the connecting bracket 4 is less than the length of the blade holder 3. The hair-leaving trimming blade is mounted on the blade holder 3, thereby facilitating the trimming of body hair at different locations on the body by the blade holder 3.

[0039] Referring to Figures 2, 3, and 4, the blade holder 3 has a blade assembly groove 31 on the side opposite to the connecting bracket 4. The fixed blade 1 is located at the opening of the blade assembly groove 31, and the movable blade 2 is slidably installed within the blade assembly groove 31. The side of the fixed blade 1 opposite to the movable blade 2 is flush with the side of the blade holder 3 where the blade assembly groove 31 is located, so that when trimming body hair, the side of the fixed blade 1 away from the bottom of the assembly groove contacts the skin.

[0040] The blade assembly groove 31 has a groove on its wall that fits the connecting hook 12. After the connecting hook 12 is inserted into the groove, the fixed blade 1 and the blade holder 3 are subjected to secondary injection molding. The secondary injection molding process includes a blocking strip and a shielding block. The shielding block fills the groove, thereby fixing the connecting hook 12 to the blade holder 3. The side of the shielding block facing away from the groove opening is flush with the outer surface of the fixed blade 1, allowing the fixed blade 1 to fit better against the skin. There are two blocking strips, which are located on both sides of the fixed blade 1 along its length and abut against the side of the fixed blade 1 that contacts the skin, forming a limit. When trimming body hair, the fixed blade 1 between the two blocking strips contacts the skin.

[0041] Referring to Figures 2, 3, and 4, the outer wall of the blade holder 3 is provided with multiple hair inlet channels 32 at intervals. Each hair inlet channel 32 is connected to the gap between two adjacent fixed blade teeth 11. The width of the hair inlet channel 32 is greater than or equal to the distance between two adjacent fixed blade teeth 11, thereby maximizing the number of hairs entering between two adjacent fixed blade teeth 11.

[0042] Referring to Figures 4 and 5, the movable blade 2 is bent into a directional plate 22 on the side away from the fixed blade 1. The bottom of the blade assembly groove 31 is provided with a directional groove 33, and the directional plate 22 is inserted into the directional groove 33 and moves within the directional groove 33. To facilitate the installation of the movable blade 2, both the blade assembly groove 31 and the directional groove 33 extend through the blade support 3 along the sliding direction of the movable blade 2.

[0043] The bottom of the directional groove 33 is provided with a drive groove 34. The extension direction of the drive groove 34 is consistent with the extension direction of the directional groove 33. The drive groove 34 passes through the side of the blade bracket 3 away from the blade assembly groove 31, so as to facilitate the eccentric column or reciprocating drive component in the hair trimmer to cooperate with the moving blade 2 to drive the moving blade 2 to move back and forth.

[0044] Referring to Figures 4 and 5, the moving blade 2 is integrally bent with a tension spring 23 on the side away from the fixed blade 1. The side of the tension spring 23 away from the fixed blade 1 abuts against the bottom of the blade assembly groove 31 to drive the moving blade 2 to press against the fixed blade 1, thereby making the hair trimming smoother and less likely to cause hair to get stuck.

[0045] Thirdly, another embodiment of the present invention provides a hair trimmer, which is equipped with the body hair trimming blade described in the first aspect and the trimming head described in the second aspect.

[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 hair trimming blade that leaves body hair at the base, characterized in that: The device includes a fixed blade (1) and a movable blade (2). The fixed blade (1) is adapted to be fixedly connected to the hair trimmer, and the movable blade (2) is adapted to be movably connected to the hair trimmer and abut against the fixed blade (1). The thickness of the fixed blade (1) is 0.15 mm. The fixed blade (1) is provided with fixed teeth (11). Multiple fixed teeth (11) are spaced apart on the fixed blade (1). The distance between two adjacent fixed teeth (11) is 0.4 mm to 0.5 mm. During trimming, the side of the fixed blade (1) away from the movable blade (2) contacts the skin, and the movable blade (2) moves relative to the fixed blade (1) to trim the hair located between two adjacent fixed teeth (11).

2. The body hair trimming blade according to claim 1, characterized in that: The thickness of the moving blade (2) is 0.2 mm.

3. The body hair trimming blade according to claim 1, characterized in that: The fixed blade tooth (11) is provided with a connecting hook (12) on the side away from the fixed blade (1). The connecting hook (12) is adapted to be fixedly connected to the blade head or hair trimmer. The connecting hook (12) and the fixed blade (1) are arranged at intervals on the side away from the moving blade (2).

4. A hair trimming blade with hair retention as described in any one of claims 1-3, characterized in that: The moving blade (2) is fixedly provided with moving blade teeth (21). Multiple moving blade teeth (21) are spaced apart on the moving blade (2). The opening between two adjacent moving blade teeth (21) is a large-angle V-shaped opening. When the moving blade (2) moves, the moving blade teeth (21) cooperate with the corresponding fixed blade teeth (11) to trim the hair between them.

5. A trimmer blade, characterized in that, Includes the body hair trimming blade as described in any one of claims 1-4.

6. A trimmer blade according to claim 5, characterized in that: Includes a blade holder (3), which is flat and suitable for connection with a hair trimmer. The blade holder (3) has a blade assembly groove (31) on one side. The fixed blade (1) is located at the opening of the blade assembly groove (31) and is fixedly connected to the blade holder (3). The movable blade (2) is slidably installed in the blade assembly groove (31). During trimming, the side of the fixed blade (1) away from the bottom of the blade assembly groove (31) contacts the skin.

7. A trimmer blade according to claim 6, characterized in that: The outer wall of the blade holder (3) is provided with a plurality of hair inlet channels (32) spaced apart. Each hair inlet channel (32) is connected to the gap between the corresponding two adjacent fixed blade teeth (11). The width of the hair inlet channel (32) is greater than or equal to the distance between the two adjacent fixed blade teeth (11).

8. A trimmer blade according to claim 5, characterized in that: The moving blade (2) has a directional plate (22) on the side away from the fixed blade (1), and the bottom of the blade assembly groove (31) has a directional groove (33). The directional plate (22) is inserted into the directional groove (33) and moves within the directional groove (33).

9. A trimmer blade according to claim 5, characterized in that: The movable blade (2) is provided with a tension spring (23) on the side away from the fixed blade (1). The side of the tension spring (23) away from the fixed blade (1) abuts against the bottom of the blade assembly groove (31) to drive the movable blade (2) to press against the fixed blade (1).

10. A hair trimmer, characterized in that, Includes the body hair trimming blade as described in any one of claims 1-4.

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