Static knife net and trimming head and trimming tool

Abstract

This invention relates to a static shaving mesh, characterized in that the curved portion includes a main shaving area at the apex of the curved arc and auxiliary shaving areas on both sides of the apex of the curved arc; wherein, the area S1 of each hair inlet hole in the main shaving area is smaller than the area S2 of each hair inlet hole in the auxiliary shaving areas. The beneficial effect of this invention is that because the static shaving mesh is curved in an inverted U-shape, with the main shaving area being the highest point in the curved portion, during use, the pressure applied by the user's hand is primarily borne by the main shaving area to compress the skin. By reducing the area S1 of each hair inlet hole in the main shaving area, while ensuring that the hair to be trimmed, such as beard hair, can be inserted into the static shaving mesh through the hair inlet holes, the shaving blade can not only cut the beard along the root as much as possible, shortening the length of stubble remaining on the skin surface and improving the shaving effect, but also minimize the amount of skin embedded in the hair inlet holes, preventing the shaving blade from cutting the skin during shaving, thus improving the safety of the trimming tool and the user experience.

Description

Technical Field

[0001] This invention relates to a shaving foil, and more specifically to a static shaving foil, trimmer tip, and trimming tool, primarily used in razors and other hair trimming tools. Background Technology

[0002] When trimming a beard, a razor requires the cooperation of a moving blade and a stationary blade. In order to facilitate the capture and guidance of the beard hairs to be trimmed, the stationary blade of existing razors has several densely arranged holes of the same diameter for entering the beard. In order to work with the moving blade to cut the beard, the existing stationary blade is basically curved into an inverted U shape.

[0003] During use, to improve the beard trimming effect, most users use the highest point of the inverted U-shaped bend of the stationary blade to press and hold the skin, so that the beard hairs on the skin surface can be inserted into the beard insertion hole as much as possible. When the moving blade moves relative to the stationary blade under the drive mechanism, it cuts the beard hairs inserted into the beard insertion hole, making the stubble remaining on the skin surface shorter and improving the beard trimming effect.

[0004] While using the same aperture size for the beard feed can achieve beard trimming and improve the trimming effect, it also has some technical drawbacks. For example, when the user presses the razor to squeeze the skin with the stationary blade, the beard hairs to be trimmed not only extend into the feed hole as much as possible to improve the trimming effect, but also the skin is squeezed into the feed hole. When the razor is used to cut the beard, the skin is very easy to cut, which poses a certain safety hazard. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides a static blade mesh, a trimming scissor head, and a trimming tool. By controlling the diameter of the beard entry holes in different areas of the static blade, not only can the beard trimming performance and trimming effect of the static blade mesh be guaranteed, but also the skin can be prevented from being excessively squeezed into the entry holes, thus avoiding skin cuts and improving the safety of using the static blade mesh.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is a static blade mesh, including a substrate, with a number of entry holes penetrating the substrate in the central area of ​​the substrate, and a curved part formed by bending with the middle of the substrate as a reference to form an inverted U-shape; the curved part includes a main shearing area at the top of the curved arc and a matching shearing area on both sides of the top of the curved arc; wherein, the area S1 of each entry hole in the main shearing area is smaller than the area S2 of each entry hole in the matching shearing area.

[0007] Preferably, the included angle θ of the arc length forming the main shear zone in the curved portion is less than 100°.

[0008] Preferably, the area S2 of each shaving hole in the two auxiliary shaving zones located on both sides of the main shaving zone is the same or different.

[0009] Preferably, the shape of the shaving inlet hole in the main shearing zone is one or more combinations of circles, triangles, squares, or rhombuses, and its area S1 is not less than 0.03 mm. 2 .

[0010] Preferably, the shape of the entry holes in the main shearing area and the auxiliary shearing area is one or more combinations of circles, triangles, squares, or rhombuses, and the area S1 and the area S2 of each entry hole do not exceed 0.72 mm. 2 .

[0011] Preferably, the thickness of the main shearing area D1 is greater than the thickness of the matching shearing area D2; or, the thickness of the main shearing area D1 is less than the thickness of the matching shearing area D2.

[0012] Preferably, the diameter of each shaving hole in the main shearing zone and the secondary shearing zone gradually increases, with the shaving hole at the center of the main shearing zone as the reference, and extending at intervals along the direction of the secondary shearing zone.

[0013] Based on the above-mentioned trimming scissor head, this application also proposes a trimming scissor head, including the aforementioned static blade mesh.

[0014] Based on the aforementioned trimming scissor head, this application also proposes a trimming tool, including the aforementioned trimming scissor head.

[0015] The beneficial effects of this invention are that the static blade mesh is curved in an inverted U-shape, with the main cutting area in the curved part being the highest point. During use, the main cutting area is mainly responsible for bearing the pressure applied by the user's hand to squeeze the skin. By reducing the area S1 of each hair inlet hole in the main cutting area, while ensuring that the hair to be trimmed can be inserted into the static blade mesh through the hair inlet holes, the moving blade can not only cut the beard along the root as much as possible, shortening the length of the stubble remaining on the skin surface and improving the shaving effect, but also minimize the amount of skin sinking into the hair inlet holes, preventing the moving blade from cutting the skin during shaving, thus improving the safety of the trimming tool and the user's experience. Attached Figure Description

[0016] Figure 1 This is a plan view of the static knife mesh according to an embodiment of the present invention.

[0017] Figure 2 This is a side view of the static blade mesh being bent into an inverted U-shape according to an embodiment of the present invention.

[0018] Figure 3 This is a first embodiment of the main shearing area and the secondary shearing area in this invention.

[0019] Figure 4 This is a second embodiment of the main shearing area and the secondary shearing area in this invention. Detailed Implementation

[0020] The embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0021] like Figures 1-4 As shown, the present invention relates to a static knife wire mesh, comprising a flexible substrate 1, wherein a plurality of entry holes 11 are provided in the central region of the substrate 1, the plurality of entry holes 11 being arranged at intervals along the transverse and longitudinal directions of the substrate 1, and the outermost entry hole 11 in the transverse and longitudinal directions is spaced apart from the edge of the substrate 1, in order to improve the overall strength of the static knife wire mesh, prevent the static knife wire mesh from tearing in the transverse or longitudinal direction, and ensure the service life and installation firmness of the static knife wire mesh.

[0022] In the specific assembly process, taking the center of the base plate 1 as a reference, the center of the stationary blade mesh is bent to form an inverted U-shaped curved portion 12. Its two sides are riveted or fastened to the stationary blade seat to form a single unit. The moving blade is placed at the bottom of the stationary blade mesh, and the blade edge of the moving blade contacts and adheres to the bottom surface of the curved portion 12 in the stationary blade mesh. When the hair to be trimmed, such as beard hair, is inserted into the hair inlet hole 11, the moving blade, driven by the drive mechanism, reciprocates along the curved portion 12 of the stationary blade mesh to cut the hair, thus realizing the hair trimming performance of the stationary blade mesh. The aforementioned components, such as the stationary blade seat, moving blade, and drive mechanism, are not related to the inventive points of this application and are not shown in the accompanying drawings.

[0023] Because the existing static blade meshes have identical entry holes 11 with the same diameter and cross-sectional area, and skin has a certain degree of elasticity and extensibility, when the user presses the trimming tool against the skin, not only does the stubble to be trimmed enter the entry hole 11 closer to the hair root, but some skin is also squeezed into the entry hole 11. When the moving blade is driven by the drive mechanism to reciprocate along the static blade mesh to cut the beard, although this shortens the length of stubble remaining on the skin surface and improves the trimming effect, the moving blade can also cut the skin, posing a safety hazard and resulting in a poor user experience.

[0024] Based on the above-mentioned technical defects, this application adopts the following improvement measures: the curved part 12 in the static knife wire mesh is divided into two main shearing areas 13 with different structures and the auxiliary shearing areas 14 located on both sides of the main shearing areas 13, so that the area S1 of each shaving hole 11 in the main shearing area 13 is smaller than the area S2 of each shaving hole 11 in the auxiliary shearing area 14. Because the static blade mesh is curved in an inverted U-shape, the main cutting area 13 (which can also be understood as the arc-shaped top of the curved part 12) in the curved part 12 is the highest point. During use, the main cutting area 13 basically bears the pressure applied by the user's hand to squeeze the skin. By reducing the area S1 of each hair inlet hole 11 in the main cutting area 13, while ensuring that the hair to be cut can be inserted into the static blade mesh through the hair inlet hole 11, the blade can not only cut the beard along the root as much as possible, shorten the length of the stubble remaining on the skin surface, and improve the shaving effect, but also minimize the amount of skin squeezed into the hair inlet hole 11, prevent the blade from cutting the skin during shaving, and improve the safety of the trimming tool and the user's experience.

[0025] Furthermore, by setting the area S2 of each hair inlet hole 11 in the trimming area 14 to be larger than the area S1 of each hair inlet hole 11 in the main trimming area 13, when the trimming tool slides along the skin, at least one of the two trimming areas 14 will approach or adhere to the skin. Since the pressing pressure applied by the user's hand is mainly concentrated in the arc apex area of ​​the curved part 12, i.e., the main trimming area 13, while the pressing pressure on the trimming area 14 is relatively small, the skin will not be squeezed into the hair inlet hole 11 of the trimming area 14 during shaving, ensuring the safety of the static blade. When the area S2 of the hair inlet hole 11 in the trimming area 14 is relatively increased, the hairs such as beards to be trimmed on the skin corresponding to the trimming area 14 can quickly enter the hair inlet hole 11, improving the hair inlet efficiency and trimming performance of the trimming area 14.

[0026] During shaving, the main cutting area 13 in the curved section 12 primarily bears the pressure applied to the skin by the user's hand. To minimize the risk of skin being squeezed into the hair inlet 11 of the main cutting area 13 and cut by the passive blade when cutting the beard, the arc angle θ forming the main cutting area 13 in the curved section 12 is less than 100°. Since the curved section 12 in the static blade needs to withstand the pressure from the user's hand, if the arc angle θ is set too small (e.g., 5°–10°), the contact area between the main cutting area 13 and the skin is relatively small when the user presses down on the curved section 12, thus reducing the efficiency of hair entry and trimming. Furthermore, due to the small contact area between the main cutting area 13 and the skin, some skin may be squeezed into the hair inlet 11 of the cutting area and cut by the passive blade, posing a safety hazard. If the arc angle θ of the main cutting area 13 is set too large, such as greater than 130°, when the user presses and drives the curved part 12 to compress and flatten the skin, the area of ​​the main cutting area 13 exceeds the contact area with the skin. The hair-feathering holes 11 at the edge, when no external pressure is applied and limited by the shrinking area S1, cannot smoothly extend the hairs to be trimmed into the hair-feathering holes 11 of the trimming area 14, affecting the hair-feathering efficiency of the static blade mesh. Therefore, for safety and hair-feathering efficiency, the arc angle θ of the main cutting area 13 in this embodiment is preferably between 30° and 70°.

[0027] Because skin has a certain degree of elasticity and extensibility, when the user presses the trimming tool, causing the static blade mesh to squeeze against the skin, some areas of skin can be squeezed into the beard entry hole 11 and cut by the passive blade. The average diameter of human beard hairs is between 0.125 and 0.159 mm, which translates to an area of ​​approximately 0.012 to 0.02 mm². 2 Between these points, the area S1 of each shaving hole 11 within the main shearing zone 13 shall be set to be no less than 0.03 mm². 2 Preferably 0.05mm 2 During shaving, when the user holds the trimmer and presses it to cause the static foil to squeeze against the skin, it not only allows the hair to be trimmed to smoothly enter the hair inlet holes 11 of the main trimming area 13, ensuring the hair inlet efficiency of the main trimming area 13; at the same time, due to the reduced area S1 of the hair inlet holes 11, it also effectively reduces the amount of skin squeezed into the hair inlet holes 11, avoiding skin cuts when the blades are cutting the hair, and improving the safety of using the static foil. Of course, it can also be appropriately increased, for example, setting the area S1 of each hair inlet hole 11 in the main trimming area 13 to 0.06 mm. 2 0.08 mm 2 or 0.10mm 2 In principle, the diameter should not exceed 0.11 mm. 2 As long as it's larger than the average cross-sectional area of ​​the beard, it's fine. However, a larger setting is acceptable, such as greater than 0.11mm. 2At the same time, some skin may be squeezed into the pore 11, which may easily cause cuts from the knife and pose a safety hazard. Therefore, the implementation method of this embodiment is the preferred implementation method.

[0028] For safety reasons and to prevent skin cuts, the area S1 of each hair inlet hole 11 within the main trimming area 13 is relatively reduced. However, during actual shaving, the main trimming area 13 in the curved portion 12 bears the pressure from the user's hand, while the trimming area 14 can withstand relatively little or no pressure from the user's hand. When the user's hand drives the trimming tool to shave along the skin, at least one trimming area 14 is close to or in contact with the skin. To improve the hair entry and trimming efficiency of the trimming area 14, the area S2 of each hair inlet hole 11 within the trimming area 14 does not exceed 0.72 mm. 2 In specific implementation, the area S2 of each shaving hole 11 within the cutting area 14 is preferably 0.72 mm². 2 Of course, you can also set it to a larger size, such as 1 or 2 mm. 2 However, due to its larger size, the bending strength of the shearing area 14 is prone to deformation. When the moving blade oscillates back and forth along the curved part 12, the frictional resistance increases relatively, causing the surface temperature of the stationary blade mesh to rise, resulting in overheating and reducing the comfort of using the stationary blade mesh. Therefore, based on considerations of safety and efficient fiber feeding, the areas S1 and S2 of the fiber feeding holes 11 in the main shearing area 13 and the shearing area 14 should not exceed 0.72 mm². 2 This is the preferred implementation method for the applicant.

[0029] Secondly, by increasing the area S2 of each hair inlet hole 11 in the trimming area 14, when the main trimming area 13 slides along the skin at an angle, the hair to be trimmed that is close to or against the skin can also be quickly inserted into the hair inlet hole 11 in the trimming area 14 and passively cut by the blade, thereby improving the hair inlet efficiency and hair trimming efficiency of the static blade mesh.

[0030] In addition, during actual production, the shape of each beard entry hole 11 in the main cutting area 13 and the auxiliary cutting area 14 can be circular, triangular, square (including rectangle or square), rhomboid, or irregular, as long as it can accommodate the beard entering the entry hole 11. Of course, several shapes can also be combined as needed for the beard to be introduced into the main cutting area 13, and the specific shape is not further limited in this embodiment.

[0031] In some specific embodiments, the area S2 of each hair inlet hole 11 in the two auxiliary cutting areas 14 located on both sides of the main cutting area 13 can be set to be the same or different. If set to be the same, it can facilitate production and processing and improve the production efficiency of the static blade wire. If set to be different, it can be applied to the trimming of different human hair, expanding the applicability of the static blade wire. The specific settings can be customized according to user or market needs.

[0032] To improve the shaving effect, in practice, the thickness D1 of the main trimming area 13 can be set to be greater than the thickness D2 of the auxiliary trimming area 14. Since the main trimming area 13 mainly bears the pressure of the user's hand during shaving, by controlling the material thickness of the main trimming area 13, the distance between the inner surface of the main trimming area 13 and the skin can be shortened. The shorter the distance, the shorter the length of stubble remaining on the skin surface, and the better the shaving effect.

[0033] Of course, if the lifespan of the static foil is considered, the thickness D1 of the main trimming zone 13 can be set smaller than the thickness D2 of the auxiliary trimming zone 14. Since the static foil mainly relies on the main trimming zone 13 for beard trimming during daily shaving, if the thickness is relatively thin, although the shaving effect is better, the lifespan is relatively shorter. Therefore, in order to extend the lifespan of the static foil, the thickness D1 of the main trimming zone 13 can be increased to be greater than the thickness D2 of the auxiliary trimming zone 14.

[0034] For safety reasons, this application reduces the area S1 of each feed hole 11 within the main shearing zone 13. In actual production, the feed holes 11 can have the same diameter and form the same area. Alternatively, a gradually increasing diameter can be used. For example, with the center of the main shearing zone 13 as a reference, the feed holes 11 are arranged at intervals along the direction of the matching shearing zone 14, and the diameter of each feed hole 11 gradually increases. Similarly, the feed holes 11 within the matching shearing zone 14 can also be set to have the same diameter and form the same area. Alternatively, a gradually increasing diameter can be used, for example, starting from the feed hole 11 at the outermost edge of the main shearing zone 13.

[0035] Based on the above-mentioned trimming scissor head, this application also proposes a trimming scissor head, including the aforementioned static blade mesh.

[0036] Based on the aforementioned trimming scissor head, this application also proposes a trimming tool, including the aforementioned trimming scissor head.

[0037] The above embodiments should not be considered as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A stationary knife screen comprising a base sheet (1) having a plurality of entry holes (11) formed through the base sheet (1) in a central region of the base sheet (1) and a curved portion (12) formed in a reverse U shape with the middle of the base sheet (1) as a reference; characterized in that The curved section (12) includes a main shearing area (13) at the top of the curved arc and a pairing shearing area (14) on both sides of the top of the curved arc; wherein, the area S1 of each entry hole (11) in the main shearing area (13) is smaller than the area S2 of each entry hole (11) in the pairing shearing area (14).

2. The stationary knife screen of claim 1, wherein The arc length angle θ of the main shear zone (13) formed in the curved part (12) is less than 100°.

3. The stationary knife screen of claim 1, wherein The area S2 of each of the two auxiliary cutting zones (14) located on both sides of the main cutting zone (13) is the same or different.

4. The stationary knife screen of claim 1, wherein The shape of the inlet hole (11) in the main shearing zone (13) is one or more combinations of circular, triangular, square or diamond, and its area S1 is not less than 0.03 mm 2 .

5. The static knife wire mesh according to claim 1, characterized in that... The shape of the entry holes (11) in the main shear zone (13) and the matching shear zone (14) is one or more combinations of a circle, a triangle, a square or a diamond, and the area S1 of each entry hole (11) and the area S2 of the entry hole (11) are not more than 0.72 mm 2 .

6. The static knife wire mesh according to claim 1, characterized in that... The thickness D1 of the main shearing area (13) is greater than the thickness D2 of the matching shearing area (14); or, the thickness D1 of the main shearing area (13) is less than the thickness D2 of the matching shearing area (14).

7. The static knife wire mesh according to claim 1, characterized in that... The diameter of each shaving hole (11) in the main shearing area (13) and the secondary shearing area (14) gradually increases with the shaving hole (11) at the center of the main shearing area (13) as the reference, and the shaving holes (11) are arranged at intervals along the direction of the secondary shearing area (14).

8. A tool for trimming scissor tips, characterized in that... Includes the static knife mesh according to any one of claims 1 to 7.

9. A pruning tool, characterized in that... Includes the trimmer head as described in claim 8.

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