Shaver net

Abstract

The utility model discloses a razor net which comprises a razor net body, the razor net body is provided with an inner cavity, the middle of the net top of the razor net body is provided with a downward concave groove, a central positioning column is arranged below the groove bottom of the groove, more than two shaving rings are arranged on the outer side of the groove, the shaving rings and the central positioning column are concentrically arranged, and the razor net body is provided with an inner cavity. An annular shaving track is arranged below the shaving ring, a hair inlet structure is arranged on the shaving ring in the circumferential direction, a patch is fixed in the groove, the top face of the patch is a curved face, the middle of the top face is high, and the top face of the patch is gradually lowered towards the outer side. The highest point of the top surface of the patch is higher than the top surface of the adjacent shaving ring, and the outer edge of the top surface of the patch is lower than the top surface of the adjacent shaving ring, so that the patch is in contact with the skin to form skin support, and skin irritation caused by excessive extrusion of the skin on a hair inlet structure on the shaving ring under excessive pressure is avoided; and when the patch is attached to the skin to move, smooth comfort can be provided.

Description

[Technical Field]

[0001] This utility model relates to a razor blade mesh. [Background Technology]

[0002] The main function of a rotary shaver is shaving. Currently, the foil is generally formed by stamping metal sheets. It typically has several shaving rings stamped on the top of the foil, with entry holes for hair to enter and cut. A recessed groove is formed on the inner side of the shaving ring. To meet the centering requirements of the rotating blades, a hollow center positioning post is stamped downwards from the bottom of the groove. To cover the bottom of the groove and prevent the stamped positioning post from being exposed, a patch is usually fixed in the groove. Since the metal sheet is generally about 0.5mm thick, the groove usually has a certain depth to form the shaving rings and center positioning post, and to ensure the center positioning post protrudes downwards for centering with the rotating blade assembly. After installation, the patch is usually below the surface of the shaving rings.

[0003] Current research and improvements on the foil of rotary shavers generally focus on cutting performance. However, the foil is the part that comes into contact with the skin during shaving, and its comfort is closely related to the shaving process, but it is easily overlooked.

[0004] Existing razor foils have a gap groove between two adjacent shaving rings. Similarly, in order to better form the raised shaving rings during the stamping process, the gap groove is usually recessed quite deeply. In order to avoid the gap groove occupying too much area, its width is relatively small. As shown in the attached figure of the specification of Chinese patent CN2863394Y entitled "A Razor Foil Cover", when the hair inlet groove is processed by cutting groove with a grinding wheel, the hair inlet groove usually only cuts down to the middle and upper part of the gap groove. If the hair inlet hole is stamped, it will not be punched to the position of the gap groove. This makes the gap groove easy to accumulate water or impurities.

[0005] This utility model was made based on this situation. [Utility Model Content]

[0006] The technical problem to be solved by this utility model is to provide a razor foil with a simple structure and comfortable feel.

[0007] This utility model is achieved through the following technical solution:

[0008] A razor foil includes a foil body with an inner cavity. A downwardly recessed groove is located in the center of the foil top. A central positioning post is located below the bottom of the groove. Two or more shaving rings, concentrically arranged with the central positioning post, are located on the outer side of the groove. An annular shaving track is located below each shaving ring. A hair-feeding structure is provided on each shaving ring in a circumferential direction. A patch is fixed in the groove. The top surface of the patch is curved, higher in the middle and gradually decreasing outwards. At its highest point, the top surface of the patch is higher than the top surface of the adjacent shaving ring, and the outer edge of the top surface of the patch is lower than the top surface of the adjacent shaving ring.

[0009] As described above, the razor foil body, groove, central positioning post, shaving ring, and hair feeding structure are integrally formed by powder metallurgy.

[0010] As described above, in a razor blade foil, the top of the central positioning post is closed, the top surface of the patch is spherical, and the bottom of the patch is concave upward and forms an adhesive space with the bottom of the groove.

[0011] In a razor foil as described above, all the shaving rings and pads are distributed along a spherical surface S, and the pads are tangent to the spherical surface S.

[0012] As described above, the diameter of the spherical foil is between 150 mm and 350 mm.

[0013] As described above, in a razor blade foil, the top surface of the patch is a frosted surface.

[0014] As described in any one of the above, a razor blade foil has a recessed spacer groove between two adjacent shaving rings. At least one of the shaving rings on both sides of the spacer groove has a hair inlet structure 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 the bottom of the spacer groove, and the bottom of the hair inlet groove extends obliquely downward from the bottom of the spacer groove.

[0015] As described above, in a razor foil, the hair-feeding structure of the shaving rings on both sides of the spacer groove includes a hair-feeding groove that extends laterally into the spacer groove, and the bottom of the spacer groove is an upwardly convex arc shape when viewed in cross-section.

[0016] In the razor foil described above, the side of the shaving track near the spacer groove forms an obtuse angle α with the bottom of the hair inlet groove.

[0017] In the razor foil described above, the included angle b between the two side walls on both sides 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.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. During shaving, the top surface of the foil presses against the skin and moves. The top surface of the pad is higher than the top surface of the adjacent shaving ring, which facilitates the pad's contact with the skin and provides support, reducing pressure between the shaving ring and the skin. This prevents excessive pressure on the delicate skin from over-compressing the hair-advancing structures on the shaving ring, which could cause skin irritation. Furthermore, the outer edge of the pad's top surface is lower than the top surface of the adjacent shaving ring, preventing the sides of the pad from obstructing the skin and affecting the shaving feel when moving on the skin. The top surface of the pad lacks hair-advancing grooves or pores, providing a smooth and comfortable feel when moving on the skin. Preferably, the top surface of the pad is a frosted surface with a mesh size between 120 and 220. Since the skin surface usually secretes oil, a frosted surface provides a better shaving feel.

[0020] 2. The blade body, groove, central positioning post, shaving ring, and bristle inlet structure are integrally formed by powder metallurgy, resulting in a simple structure that facilitates the molding of the groove, central positioning post, shaving ring, and bristle inlet structure. This avoids the groove depth being affected by the depth position of the central positioning post protruding into the inner cavity, allowing the patch to protrude above the adjacent shaving ring after being installed in the groove. The top of the central positioning post is closed to allow for the injection of adhesive through a sprue above the central positioning post. The bottom of the patch is concave upwards and forms an adhesive-containing space with the bottom of the groove, allowing the patch to be fixed in the groove with adhesive. The adhesive-containing space is used to hold the adhesive, ensuring that the bottom edge of the patch can adhere to the bottom of the groove for positioning. This prevents the patch from being lifted by the adhesive during installation and ensures accurate installation, facilitating better distribution of the shaving ring and patch along the spherical surface S.

[0021] 3. There is a recessed spacer groove between two adjacent shaving rings. At least one of the shaving rings on both sides of the spacer groove has a hair inlet structure that extends laterally into the spacer groove. The bottom of the hair inlet groove is lower than the bottom of the spacer groove, and the bottom of the hair inlet groove extends obliquely downward from the bottom of the spacer groove. This facilitates the downward drainage of water and impurities in the spacer groove, and avoids water accumulation and impurity buildup in the spacer groove. [Attached Image Description]

[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0023] Figure 1 This is an exploded view of a razor blade net according to this utility model;

[0024] Figure 2 This is a cross-sectional view of a razor blade net according to the present invention;

[0025] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0026] Figure 4 This is the top view of the patch;

[0027] Figure 5 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.

Detailed Implementation Methods

[0028] The present invention will be further described below with reference to the accompanying drawings:

[0029] like Figures 1 to 5 The razor foil shown includes a foil body 1, which has an inner cavity 2. The top of the foil body 1 has a downwardly recessed groove 3. A central positioning post 4 is provided below the bottom of the groove 3. Two or more shaving rings 5 ​​are provided on the outer side of the groove 3, which are concentrically arranged with the central positioning post 4. A ring-shaped shaving track 6 is provided under the shaving rings 5. A hair feeding structure is provided on the circumferential direction of the shaving rings 5. A patch 7 is fixed in the groove 3. The top surface of the patch is curved and is high in the middle and gradually decreases outward. Preferably, the top surface of the patch 7 is spherical. The top surface of the patch 7 is higher than the top surface of the adjacent shaving ring 5 at the highest point 71, and the outer edge 72 of the top surface of the patch 7 is lower than the top surface of the adjacent shaving ring 5.

[0030] When the foil is installed on a shaver for shaving, the top surface of the foil presses against the skin and moves. The top surface of the pad 7 is higher than the top surface of the adjacent shaving ring 5, which facilitates the contact of the pad 7 with the skin and forms skin support, reducing the pressure between the shaving ring 5 and the skin, and preventing excessive pressure on the soft skin from causing skin irritation due to over-compression of the hair-entry structure on the shaving ring 5. Moreover, the outer edge 72 of the top surface of the pad 7 is lower than the top surface of the adjacent shaving ring 5, preventing the side of the pad from blocking the skin and affecting the skin feel when moving on the skin. The top surface of the pad does not have hair-entry grooves or pores, which provides a smooth and comfortable feel when it is attached to the skin. Preferably, as shown in the image. Figure 4 As shown, the top surface of the patch 7 is frosted, with a mesh size between 120 and 220. Since the skin surface usually secretes oil, the frosted surface provides a better skin feel. Of course, the top surface of the patch 7 can be printed or engraved with patterns.

[0031] The blade body 1, groove 3, central positioning post 4, shaving ring 5, and hair inlet structure are integrally formed by powder metallurgy. The structure is simple and facilitates the forming of groove 3, central positioning post 4, shaving ring 5, and hair inlet structure. This allows the depth of groove 3 and the depth of central positioning post 4 protruding into inner cavity 2 to be formed separately, avoiding excessive depth of groove 3 so that patch 7 can be installed in groove 3 and protrude above adjacent shaving ring 5.

[0032] 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 shaving foil blank. The shaving foil blank includes a shaving foil body with a downward-facing inner cavity. A shaving ring, a central positioning post, a groove, and a bristle inlet structure are integrally formed on the top of the shaving foil body. The shaving foil blank is then placed in a degreasing furnace for degreasing. The degreased shaving foil blank is then placed in a sintering furnace for sintering. The sintered shaving foil 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.

[0033] Preferably, the top of the central positioning post 4 is closed so that an inlet can be provided above the central positioning post 4 to allow glue to enter. The bottom of the patch 7 is concave upward and forms a glue-containing space 8 with the bottom of the groove 3 so that the patch can be glued and fixed in the groove 3. The glue-containing space 8 is used to hold the glue so that the bottom edge of the patch 7 can be attached to the bottom of the groove 3 for positioning, and to prevent the patch from being lifted by the glue during installation and thus not being installed accurately.

[0034] Preferably, all the shaving rings 5 ​​and the pads 7 are distributed along the spherical surface S, the pads 7 are tangent to the spherical surface S, and the shaving rings 5 ​​are either tangent to the spherical surface S or the top surface of the shaving rings coincides with the spherical surface S.

[0035] Preferably, the diameter of the spherical surface S is between 150mm and 350mm to avoid excessive height difference between the shaving rings, which would increase the manufacturing difficulty of the moving blade that cooperates with the shaving track 6.

[0036] Preferably, there is a recessed spacer groove 9 between two adjacent shaving rings 5. At least one of the shaving rings 5 ​​on both sides of the spacer groove 9 has a hair inlet structure that extends laterally into the spacer groove 9 as a hair inlet groove 10. The bottom of the hair inlet groove 10 on the side closer to the spacer groove 9 is lower than the bottom of the spacer groove 9, and the bottom of the hair inlet groove 10 extends obliquely downward from the bottom of the spacer groove 9. This facilitates the downward drainage of water and impurities in the spacer groove 9 through the hair inlet groove 10, thus preventing water and impurities from accumulating in the spacer groove 9.

[0037] Furthermore, such as Figure 3 As shown, the hair inlet structure of the shaving rings 5 ​​on both sides of the spacer groove 9 includes a hair inlet groove 10 that extends laterally into the spacer groove 9. The bottom of the spacer groove 9 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 9.

[0038] Preferably, such as Figure 3As shown, the side of the shaving track 6 near the spacer groove 9 forms an obtuse angle α with the bottom of the hair inlet groove 10. This avoids a sharp angle between the side of the shaving track and the bottom of the hair inlet groove, which could cause pulling or irritation when long hairs in the hair inlet groove 10 slide sideways out of the shaving track 6. Preferably, the obtuse angle α is greater than 100°. When the side of the shaving track and / or the bottom of the hair inlet groove are curved when viewed in cross-section, the obtuse angle α is the angle between the tangents at the intersection of the side of the shaving track and the bottom of the hair inlet groove.

[0039] Preferably, such as Figure 3 As shown, the included angle b between the two side walls on both sides of the bottom of the partition groove 9 is greater than 40°, and the depth h of the partition groove 9 is between 0.3mm and 0.6mm to avoid the partition groove 9 forming a deep and narrow structure, which is conducive to rinsing and chip removal. When the side wall of the partition groove 9 is viewed as a curve in cross-section, the included angle b is the angle formed by the tangent of the point on the curve at the same height L1, and the included angle b at any height of the partition groove 9 is greater than 40°.

Claims

1. A shaving razor cartridge, characterized by: The utility model provides a razor net body (1) is provided with inner chamber (2), the middle part of the net top of razor net body (1) is provided with the recess (3) that is concave downward, the bottom of recess (3) is provided with the center positioning column (4), the outside of recess (3) is provided with more than two shaving ring (5) with the concentric setting of center positioning column (4), the bottom of shaving ring (5) is provided with annular shaving track (6), the circumferential direction of shaving ring (5) is provided with the hair inlet structure, the top of patch (7) is fixed in recess (3) is curved and gradually reduces to the outside, the top of patch (7) is higher than the top of adjacent shaving ring (5) in the position of highest point (71) and the outer edge (72) of the top of patch (7) is lower than the top of adjacent shaving ring (5).

2. A razor cartridge according to claim 1 wherein: The razor net body (1), the recess (3), the center positioning column (4), the shaving ring (5) and the hair inlet structure are integrally formed by powder metallurgy.

3. A razor cartridge according to claim 2, characterized in that: The top of the center positioning column (4) is closed, the top of the patch (7) is spherical, the bottom of the patch (7) is concave upward and forms a glue space (8) with the bottom of the recess (3).

4. A razor cartridge according to claim 3, characterized in that: All the shaving rings (5) and the patch (7) are distributed along the spherical surface (S), and the patch (7) is inscribed in the spherical surface (S).

5. A razor cartridge according to claim 4, characterized in that: The diameter of the spherical surface (S) is between 150 mm and 350 mm.

6. A razor cartridge according to claim 1 wherein: The top of the patch (7) is a frosted surface with a mesh number between 120 mesh and 220 mesh.

7. A razor cartridge according to any one of claims 1 to 6 wherein: There is a concave interval groove (9) between the two adjacent shaving rings (5), and the hair inlet structure of at least one shaving ring (5) on the two shaving rings (5) on both sides of the interval groove (9) is a hair inlet groove (10) laterally penetrating into the interval groove (9), the groove bottom of the hair inlet groove (10) near the interval groove (9) is lower than the groove bottom of the interval groove (9), and the groove bottom of the hair inlet groove (10) extends obliquely downward from the groove bottom of the interval groove (9).

8. A razor cartridge according to claim 7, characterized in that: The hair inlet structure of the shaving rings (5) on both sides of the interval groove (9) includes a hair inlet groove (10) laterally penetrating into the interval groove (9), and the groove bottom of the interval groove (9) is an upward convex arc when viewed from the cross section.

9. A razor cartridge according to claim 7 wherein: The side surface of the shaving track (6) near the interval groove (9) forms an obtuse angle a with the groove bottom of the hair inlet groove (10).

10. A razor cartridge according to claim 7, characterized in that: The included angle b between the two side walls on both sides of the groove bottom of the interval groove (9) is greater than 40°, and the depth h of the interval groove (9) is between 0.3 mm and 0.6 mm.

Images