Shaver net capable of preventing water accumulation and dust accumulation

Abstract

The utility model discloses a razor net capable of preventing water accumulation and dust accumulation, which comprises a razor net body, the razor net body is provided with an inner cavity, the bottom of the net top of the razor net body is provided with a central positioning column, the net top of the razor net body is provided with more than two shaving rings which are concentrically arranged with the central positioning column, and the shaving rings are arranged in the inner cavity. Annular shaving rails are arranged under the shaving rings, a downwards-concave interval groove is formed between every two adjacent shaving rings, and at least one of the shaving rings on the two sides of the interval groove is provided with a hair inlet groove laterally penetrating into the interval groove. The bottom, close to one side of the spacing groove, of the fluff inlet groove is lower than the bottom of the spacing groove or flush with the bottom of the spacing groove, accumulated water and impurities in the spacing groove can be discharged into the fluff inlet groove, and water accumulation and impurity accumulation in the spacing groove are avoided.

Description

[Technical Field]

[0001] This utility model relates to a razor blade screen that prevents water and dust accumulation. [Background Technology]

[0002] The foil on existing rotary shavers is generally formed by stamping metal sheets, creating a spacer groove between two adjacent shaving rings. The stamped spacer groove is usually quite deep, and its width is relatively small to avoid occupying too much area. For example, the annular groove 1 formed between two shaving rings is shown in the attached drawing of the specification of Chinese Patent No. CN2863394Y, entitled "A Shaver Foil Cover". The stamped foil is generally processed by cutting the hair inlet groove with a grinding wheel. When processing the hair inlet groove with a grinding wheel, the hair inlet groove usually only cuts down to the middle and upper part of the spacer groove. If the hair inlet hole is stamped, it will not cut to the position of the spacer groove. This makes the spacer groove prone to water accumulation or impurity buildup.

[0003] This utility model was made based on this situation. [Utility Model Content]

[0004] The technical problem to be solved by this utility model is to provide a razor blade screen with a simple structure that prevents water and dust accumulation.

[0005] This utility model is achieved through the following technical solution:

[0006] A razor foil with anti-water and dust accumulation includes a foil body with an inner cavity. The bottom of the foil top of the foil body has a central positioning post. The foil top of the foil body has two or more shaving rings concentrically arranged with the central positioning post. The bottom of the shaving rings has an annular shaving track. There is a recessed gap groove between two adjacent shaving rings. At least one shaving ring on both sides of the gap groove has a hair inlet groove that extends laterally into the gap groove. The bottom of the hair inlet groove on the side closer to the gap groove is lower than or flush with the bottom of the gap groove.

[0007] As described above, in a razor blade screen designed to prevent water and dust accumulation, the bottom of the hair inlet groove on the side near the partition groove is lower than the bottom of the partition groove, and the bottom of the hair inlet groove extends obliquely downward from the bottom of the partition groove.

[0008] As described above, in a razor blade foil designed to prevent water and dust accumulation, the shaving rings on both sides of the spacer groove are provided with hair inlet grooves that extend laterally into the spacer groove, and the bottom of the spacer groove is an upwardly convex arc shape when viewed in cross-section.

[0009] As described above, in a razor blade foil designed to prevent water and dust accumulation, an obtuse angle α is formed between the side of the shaving track and the bottom of the hair inlet groove.

[0010] As described above, the razor blade foil for preventing water and dust accumulation has a straight section on the side of the shaving track parallel to the central axis OA, or a straight section on the side of the shaving track with an inclination angle e of less than 5° relative to the central axis OA, and the bottom of the hair inlet groove is connected to the straight section.

[0011] As described above, in a razor blade foil designed to prevent water and dust accumulation, the included angle b between the two side walls of the bottom of the partition groove is greater than 40°, and the depth h of the partition groove is between 0.3 mm and 0.6 mm.

[0012] As described above, in a razor blade foil designed to prevent water and dust accumulation, the bottom of the hair inlet groove near the partition groove is flush with the bottom of the partition groove, and the bottom of the hair inlet groove transitions to the side of the shaving track through a chamfer. Preferably, the chamfer is an angled angle or a rounded corner.

[0013] As described above, the razor blade screen for preventing water and dust accumulation is integrally formed by powder metallurgy, comprising the blade screen body, spacer groove, central positioning post, shaving ring, and hair inlet groove.

[0014] As described above, in a razor blade screen designed to prevent water and dust accumulation, the upper edge of the hair inlet groove is provided with a rounded corner R, and the lower edge of the side wall of the hair inlet groove is provided with an acute-angled blade.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. There is a recessed spacer groove between two adjacent shaving rings. At least one shaving ring on both sides of the spacer groove is provided with a hair inlet groove that extends laterally into the spacer groove. The bottom of the hair inlet groove on the side closer to the spacer groove is lower than or flush with the bottom of the spacer groove, which is conducive to the drainage of water and impurities in the spacer groove into the hair inlet groove and avoids water accumulation and impurity buildup in the spacer groove.

[0017] 2. The bottom of the hair inlet groove extends obliquely downward from the bottom of the interval groove. An obtuse angle α is formed between the side of the shaving track and the bottom of the hair inlet groove. Alternatively, the bottom of the hair inlet groove on the side closer to the interval groove is flush with the bottom of the interval groove. The bottom of the hair inlet groove and the side of the shaving track are transitioned by a chamfer to avoid forming a sharp angle between the side of the shaving track and the bottom of the hair inlet groove, which would cause pulling and irritation when long hairs in the hair inlet groove slide out of the shaving track. [Attached Image Description]

[0018] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0019] Figure 1This is a schematic diagram of the structure of a razor blade screen that prevents water and dust accumulation according to this utility model;

[0020] Figure 2 This is a cross-sectional view of a razor blade screen that prevents water and dust accumulation according to this utility model;

[0021] Figure 3 yes Figure 2 Enlarged view of part A in the middle;

[0022] Figure 4 This is a schematic diagram of an embodiment of the present invention in which a hair inlet groove is provided on one side of the shaving ring and a hair inlet hole is provided on the other side of the shaving ring.

[0023] Figure 5 yes Figure 4 Cross-sectional view of the Chinese embodiment;

[0024] Figure 6 This is a schematic diagram of an embodiment in which the side of the shaving track has an inclined, straight section connected to the bottom of the hair inlet groove.

[0025] Figure 7 This is a schematic diagram of an embodiment in which the bottom of the hair inlet groove and the side of the shaving track are transitioned by a chamfer.

[0026] Figure 8 This is a schematic diagram of the cross-section of the infeed groove.

Detailed Implementation Methods

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] like Figures 1 to 7 The razor foil shown includes a foil body 1 with an inner cavity 2. A central positioning post 4 is provided at the bottom of the top of the foil body 1. Two or more shaving rings 5 ​​are provided on the top of the foil body 1, concentrically arranged with the central positioning post 4. A ring-shaped shaving track 6 is provided under the shaving rings 5. A recessed gap groove 3 is provided between two adjacent shaving rings 5. At least one shaving ring 5 on both sides of the gap groove 3 has a hair inlet groove 7 that extends laterally into the gap groove 3. The bottom 71 of the hair inlet groove 7 on the side closer to the gap groove 3 is lower than or flush with the bottom 31 of the gap groove 3, which facilitates the drainage of water and impurities in the gap groove 3 into the hair inlet groove 7 and avoids water accumulation and impurity buildup in the gap groove 3.

[0029] like Figure 1-3 and Figure 5-6In the embodiment shown, the bottom 71 of the inlet groove 7 on the side near the partition groove 3 is lower than the bottom 31 of the partition groove 3, and the bottom 71 of the inlet groove extends obliquely downward from the bottom of the partition groove 3. This facilitates the downward discharge of water and impurities in the partition groove 3 through the inlet groove 7, and avoids water accumulation and impurity buildup between the bottom of the partition groove 3 and the bottom 71 of the inlet groove.

[0030] Preferably, such as Figure 2-3 In the embodiment shown, the shaving rings 5 ​​on both sides of the spacer groove 3 are provided with hair inlet grooves 7 that extend laterally into the spacer groove 3. The bottom of the spacer groove 3 is an upwardly convex arc shape when viewed from its cross-section, so that water does not easily accumulate at the bottom of the spacer groove 3.

[0031] Preferably, such as Figure 2-3 In the illustrated embodiment, the included angle b between the two side walls on both sides of the bottom of the spacer groove 3 is greater than 40°, and the depth h of the spacer groove 3 is between 0.3mm and 0.6mm, avoiding the spacer groove from forming a deep and narrow structure, which facilitates rinsing and chip removal. When the side wall of the spacer groove is viewed as a curve in cross-section, the included angle b is the angle formed by the tangent line at a point on the curve at the same height L1, and the included angle b at any height of the spacer groove is greater than 40°.

[0032] Preferably, such as Figure 2-3 and Figure 5-6 In the illustrated embodiment, an obtuse angle α is formed between the side of the shaving track 6 and the bottom of the hair inlet groove 71. This avoids the formation of a sharp angle between the side of the shaving track 6 and the bottom of the hair inlet groove 71, which could cause pulling or irritation when long hairs in the hair inlet groove slide laterally out of the shaving track. Preferably, the obtuse angle α is greater than 100°. When the side of the shaving track 6 and / or the bottom of the hair inlet groove 71 are viewed as curves in cross-section, the obtuse angle α is the angle between the corresponding tangents at the intersection of the side of the shaving track and the bottom of the hair inlet groove.

[0033] Preferably, the side of the shaving track 6 has a straight section 61 parallel to the central axis OA, or the side of the shaving track 6 has a straight section 61 with an inclination angle e of less than 5° relative to the central axis OA. The bottom of the hair inlet groove 71 is connected to the straight section 61, which is beneficial for processing the shaving track 6 and can avoid forming a sharp angle between the bottom of the hair inlet groove 71 and the side of the shaving track, thus reducing the occurrence of hair pulling.

[0034] like Figure 7 In the illustrated embodiment, the bottom 71 of the hair inlet groove 7 near the side of the spacer groove 3 is flush with the bottom 31 of the spacer groove 3, and the bottom 71 of the hair inlet groove and the side of the shaving track 6 are transitioned by a chamfer 8 to avoid forming a sharp angle between the side of the shaving track 6 and the bottom 71 of the hair inlet groove, which would cause pulling and irritation when long hairs in the hair inlet groove slide sideways out of the shaving track. The chamfer 8 can be an angled angle or a rounded corner.

[0035] Preferably, the blade body 1, the spacer groove 3, the central positioning post 4, the shaving ring 5, and the hair inlet groove 7 are integrally formed by powder metallurgy, which facilitates the injection molding of the spacer groove 3 and the hair inlet groove 7, and forms the bottom 71 of the hair inlet groove and the bottom 31 of the spacer groove 3.

[0036] Preferably, such as Figure 8 In the embodiment shown, the upper edge of the hair inlet groove 7 is provided with a rounded corner R to improve the skin feel; the lower edge of the side wall of the hair inlet groove 7 is provided with an acute-angled blade 72 to improve sharpness.

[0037] The powder metallurgy forming process includes the following steps: A raw material containing stainless steel powder is injection molded using an injection molding machine to obtain a blade blank. The blade blank includes a blade body with a downward-facing inner cavity. A shaving ring, a central positioning post, a spacer groove, and a hair inlet groove are integrally formed on the top of the blade body. The blade blank is then placed in a degreasing furnace for degreasing. The degreased blade blank is then placed in a sintering furnace for sintering. The sintered blade blank is then subjected to heat treatment for hardening. A portion of the material is removed from the bottom of the shaving ring to obtain a shaving track. The top surface of the shaving track is a fixed blade surface. The thickness of the shaving ring decreases at the fixed blade surface, and the fixed blade surface is used to fit against the top surface of the moving blade teeth on the moving blade.

Claims

1. A razor blade foil that prevents water and dust accumulation, characterized in that: The utility model relates to a razor net body (1) is provided with inner chamber (2), the bottom of the net top of razor net body (1) is equipped with center positioning column (4), the net top of razor net body (1) is equipped with two or more than two concentric setting shaving ring (5) with center positioning column (4), the bottom of shaving ring (5) is equipped with annular shaving track (6), adjacent two shaving ring (5) between have concave interval groove (3), at least one shaving ring (5) on the shaving ring (5) on the both sides of interval groove (3) is equipped with lateral hair inlet groove (7) that goes into interval groove (3), the hair inlet groove bottom (71) of hair inlet groove (7) near interval groove (3) side is lower than the groove bottom (31) of interval groove (3) or is flush with the groove bottom (31) of interval groove (3).

2. A shaver head according to claim 1, characterized in that: The hair inlet groove bottom (71) of hair inlet groove (7) near interval groove (3) side is lower than the groove bottom (31) of interval groove (3), and the hair inlet groove bottom (71) extends obliquely downward from the groove bottom of interval groove (3).

3. A shaver head according to claim 2, characterized in that: The shaving ring (5) on the both sides of interval groove (3) is equipped with lateral hair inlet groove (7) that goes into interval groove (3), and the groove bottom of interval groove (3) is upwardly convex arc-shaped when observed from the cross section.

4. A shaver head according to claim 2, wherein: An obtuse angle a is formed between the side of shaving track (6) and the hair inlet groove bottom (71).

5. A shaver head according to claim 4, characterized in that: The side of shaving track (6) has a flat section (61) parallel to the central axis (OA), or relative to the central axis (OA), the side of shaving track (6) has a flat section (61) with an inclination angle e less than 5°, and the hair inlet groove bottom (71) is connected with the flat section (61).

6. A shaver head according to claim 2, wherein: An included angle b between the two side walls on both sides of the groove bottom of interval groove (3) is greater than 40°, and the depth h of interval groove (3) is between 0.3 mm and 0.6 mm.

7. A shaver head according to claim 1, wherein: The hair inlet groove bottom (71) of hair inlet groove (7) near interval groove (3) side is flush with the groove bottom (31) of interval groove (3), and the hair inlet groove bottom (71) and the side of shaving track (6) are transitioned through a chamfer (8).

8. A shaver head according to claim 7, characterized in that: The chamfer (8) is an inclined angle or a rounded chamfer.

9. A water and debris accumulation resistant razor head according to any one of claims 1 to 8, characterized in that: The razor net body (1), interval groove (3), center positioning column (4), shaving ring (5) and hair inlet groove (7) are integrally formed by powder metallurgy.

10. A shaver head according to claim 9, characterized in that: A rounded chamfer (R) is arranged on the upper end edge of hair inlet groove (7), and a sharp blade (72) is arranged on the lower end edge of the side wall of hair inlet groove (7).

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