Rotary shaver net capable of preventing hair from being pulled

Abstract

The utility model discloses a rotary shaver net capable of preventing hair from being pulled out, which comprises a shaver net body, a shaving track is arranged at the bottom of the net top of the shaver net body, a hair inlet groove for hair to enter the shaving track is arranged on the net top corresponding to the shaving track, and obtuse angles are formed between a plurality of groove bottoms of the hair inlet groove and the side face of the shaving track or transition is achieved through chamfers. The utility model further discloses another rotary shaver net capable of preventing hair pulling, which comprises a blade net body formed by powder metallurgy, a shaving track is arranged at the bottom of the net top of the blade net body, a hair inlet groove corresponding to the shaving track is arranged on the net top of the blade net body, a convex ring is arranged on the net top of the blade net body, and the hair inlet groove is integrally formed on the convex ring through powder metallurgy in an injection mode. The hair inlet groove transversely penetrates through the inner side wall of the protruding ring, the height h from the intersecting line between the groove bottom, located on the inner side wall of the protruding ring, of the hair inlet groove and the side face of the shaving track to the top face of the net top is larger than or equal to 0.6 mm, and hair pulling when hair in the hair inlet groove slides out from the groove bottom direction is avoided.

Description

[Technical field]

[0001] The utility model relates to a rotary shaver blade net which can prevent hair from being pulled out. [Background technology]

[0002] The existing rotary shaver blade net is generally stamped, and usually one or more convex rings are stamped on the top of the net, and spacing grooves are stamped between different convex rings, and the shaving inlet grooves are cut on the convex rings by a grinding wheel. Figure 10 As shown in the figure, since the mesh top and the convex ring are relatively small and the material thickness of the knife mesh is relatively thick, after stamping, the inner side of the convex ring is often formed with some inclined surfaces, the beard inlet groove horizontally penetrates one or two side walls of the convex ring, the inner side of the convex ring is a shaving track, the beard inlet groove penetrates downward into the shaving track, and has a groove bottom at the side wall of the convex ring, and a sharp angle structure 1a less than 90° is often formed between the groove bottom and the side of the shaving track. When the beard 1b entering the beard inlet groove is not located in the cutting area of ​​the moving blade tooth 1c and is cut, and is about to slide out of the beard inlet groove when the knife mesh moves, as shown in FIG. Figure 10 If the beard has a certain length and is blocked by the sharp corner structure 1a, the hair is easily pulled by the sharp corner due to the narrow beard entry groove, which causes irritation and discomfort to the skin. Especially at the groove bottom on both sides of the spacing groove 1d, because the grinding wheel needs to avoid cutting the adjacent convex ring when cutting the groove, the groove bottom on both sides of the spacing groove is usually very shallow, and the middle of the beard is easy to touch the sharp corner structure 1a and be pulled.

[0003] The utility model is made based on this situation. [Utility Model Content]

[0004] The technical problem to be solved by the utility model is to provide a rotary shaver blade net with a simple structure and anti-hair pulling.

[0005] The utility model is realized by the following technical solutions:

[0006] A rotary razor blade net for preventing hair pulling comprises a blade net body, a shaving track is arranged at the bottom of the blade net top of the blade net body, a hair inlet groove for hair to enter the shaving track is arranged on the blade net top corresponding to the shaving track, and several groove bottoms of the hair inlet groove form an obtuse angle with the side surface of the shaving track or are transitioned by chamfering.

[0007] Regarding the rotary shaver blade net, in a preferred embodiment, a convex ring is provided on the top of the blade net body, the shaving track is located on the inner side of the convex ring, the hair feed groove transversely penetrates the inner wall and the outer wall of the convex ring, and the bottom of the hair feed groove located at the inner wall and / or the outer wall of the convex ring forms an obtuse angle or transitions through a chamfer with the side of the shaving track.

[0008] Regarding the rotating razor blade net described above, in another preferred embodiment, a convex ring is provided on the top of the blade net body, the shaving track is located inside the convex ring, on the outermost convex ring, the hair inlet groove transversely penetrates the inner side wall and the outer side wall of the convex ring, an obtuse angle is formed between the bottom of the groove at the inner side wall of the convex ring and the side surface of the shaving track or a chamfer is provided for transition, and the distance d between the bottom of the groove at the outer side wall of the convex ring and the top surface of the net top is d≥0.8mm.

[0009] Regarding the rotating razor blade net described above, in the third preferred embodiment, a convex ring is provided on the top of the blade net body, the shaving track is located inside the convex ring, the hair inlet groove only transversely penetrates the outer side wall or the inner side wall of the convex ring so that the hair inlet groove only has a bottom at the corresponding outer side wall or inner side wall, and an obtuse angle is formed between the bottom and the side surface of the shaving track or a chamfer is provided for transition.

[0010] Regarding the connection structure between the bottom of the hair inlet groove and the side surface of the shaving track, in a preferred embodiment, the bottom of the hair inlet groove is obliquely downward towards the shaving track, and the angle between the bottom and the side surface of the shaving track is an obtuse angle. Preferably, the side surface of the shaving track has a straight section parallel to the central axis OA of the rotating razor blade net, or relative to the central axis OA of the rotating razor blade net, the side surface of the shaving track has a straight section with an inclination angle a less than 5°, and the bottom is connected to the straight section.

[0011] Regarding the connection structure between the bottom of the hair inlet groove and the side surface of the shaving track, in another preferred embodiment, when chamfers are provided for transition between the bottoms of several hair inlet grooves and the side surfaces of the shaving track, the chamfers are oblique angles provided between the bottoms of the hair inlet grooves and the shaving track, the angle between the plane where the oblique angle is located and the side surface of the shaving track is an obtuse angle, or the chamfers are rounded corners provided between the bottoms of the hair inlet grooves and the side surfaces of the shaving track.

[0012] For a rotating razor blade net for preventing hair pulling as described above, the blade net body and the hair inlet grooves thereon are integrally injection molded by powder metallurgy.

[0013] For a rotating razor blade net for preventing hair pulling as described above, the upper end edge of the hair inlet groove is provided with a rounded corner.

[0014] For a rotating razor blade net for preventing hair pulling as described above, the lower end edge of the side wall of the hair inlet groove is provided with a sharp blade.

[0015] The technical problem to be solved by the present utility model is to provide another rotating razor blade net for preventing hair pulling with a simple structure.

[0016] To solve the above technical problems, a rotating razor blade net for preventing hair pulling of the present utility model includes a blade net body formed by powder metallurgy. A shaving track is provided at the bottom of the top of the blade net body. A hair inlet groove for allowing hair to enter the shaving track is provided on the top of the blade net corresponding to the shaving track. A convex ring is provided on the top of the blade net body. The shaving track is located inside the convex ring. The hair inlet groove is integrally injection molded on the convex ring by powder metallurgy. The hair inlet groove horizontally penetrates the inner side wall of the convex ring. The height h from the intersection line between the bottom of the groove of the hair inlet groove at the inner side wall of the convex ring and the side surface of the shaving track to the top surface of the top of the blade net is h≥0.6mm.

[0017] Compared with the prior art, the present utility model has the following advantages:

[0018] 1. The present utility model forms an obtuse angle or a chamfer transition between the bottoms of several grooves of the hair inlet groove and the side surfaces of the shaving track, so as to avoid hair pulling when the hair in the hair inlet groove slides out from the direction of the bottom of the groove.

[0019] 2. The blade net body and the hair inlet groove thereon of the present utility model are integrally injection molded by powder metallurgy, and the structure is simple, which is conducive to forming the corresponding obtuse angle or chamfer.

[0020] 3. The hair inlet groove of the present utility model is integrally injection molded on the convex ring by powder metallurgy, which can effectively control and deepen the depth at the bottom of the hair inlet groove. The height h from the intersection line between the bottom of the groove of the hair inlet groove at the inner side wall of the convex ring and the side surface of the shaving track to the top surface of the top of the blade net is h≥0.6mm, so as to avoid the angle formed between the bottom of the groove at the inner side wall of the convex ring and the side surface of the shaving track being too shallow relative to the top surface of the top of the blade net, and reduce the probability of hair pulling for medium and short beards.

Description of the Drawings

[0021] The following further details the specific implementation manners of the present utility model in conjunction with the drawings, wherein:

[0022] Figure 1 is the top view of an embodiment of a rotating razor blade net for preventing hair pulling of the present utility model;

[0023] Figure 2 is Figure 1 the cross-sectional view along the A-A direction in

[0024] Figure 3 is the structural schematic diagram of an embodiment of a rotating razor blade net for preventing hair pulling of the present utility model with an oblique angle transition between the bottom of the hair inlet groove and the side surface of the shaving track;

[0025] Figure 4 is the structural schematic diagram of an embodiment of a rotating razor blade net for preventing hair pulling of the present utility model with a rounded corner transition between the bottom of the hair inlet groove and the side surface of the shaving track;

[0026] Figure 5 It is a schematic structural view of an embodiment in which the hair inlet groove of the present utility model is provided with a chamfer only at the groove bottom corresponding to the inner side wall of the convex ring for transition with the side surface of the shaving track;

[0027] Figure 6 It is a schematic structural view of an embodiment in which the hair inlet groove of the present utility model is such that the groove bottom located at the inner side wall of the convex ring slopes downward obliquely towards the shaving track and forms an obtuse angle with the side surface of the shaving track;

[0028] Figure 7 It is a schematic structural view of an embodiment in which the hair inlet groove of the present utility model horizontally penetrates only one side wall of the convex ring;

[0029] Figure 8 It is a schematic cross-sectional view of the hair inlet groove;

[0030] Figure 9 It is a schematic structural view of another embodiment of a rotating razor blade net with anti-hair-pulling function of the present utility model;

[0031] Figure 10 It is a cross-sectional view of a rotating razor blade net at the position of the hair inlet groove in the prior art.

Detailed Embodiments

[0032] The present utility model will be further described below with reference to the accompanying drawings:

[0033] As Figures 1 to 7 shown, a rotating razor blade net with anti-hair-pulling function includes a blade net body 1. A shaving track 2 is provided at the bottom of the net top 10 of the blade net body 1. The shaving track 2 is a structure concave from bottom to top and is annularly distributed around the central axis of the blade net, for the movable cutter teeth to rotate inwardly. A hair inlet groove 3 corresponding to the shaving track 2 is provided on the net top 10 for hair to enter into the shaving track 2. An obtuse angle 4 is formed between the several groove bottoms 31 of the hair inlet groove 3 and the side surface of the shaving track 2 or a chamfer 5 is provided for transition, so as to prevent hair pulling when the hair in the hair inlet groove slides out from the direction of the groove bottom.

[0034] As Figure 2 、 3 、4, 5, 6 shown in the embodiments, a convex ring 6 is provided on the net top 10 of the blade net body 1. The shaving track 2 is located inside the convex ring 6. The hair inlet groove 3 horizontally penetrates the inner side wall 61 and the outer side wall 62 of the convex ring 6. An obtuse angle 4 is formed between the groove bottom 31 of the hair inlet groove 3 located at the inner side wall 61 and / or the outer side wall 62 of the convex ring 6 and the side surface of the shaving track 2 or a chamfer 5 is provided for transition.

[0035] As Figure 5 and Figure 6In the illustrated embodiment, a convex ring 6 is provided on the mesh top 10 of the cutter net body 1. The shaving track 2 is located inside the convex ring 6. On the outermost convex ring 6, the hair inlet groove 3 horizontally penetrates through the inner side wall 61 and the outer side wall 62 of the convex ring 6. An obtuse angle 4 is formed between the groove bottom 31 of the hair inlet groove 3 at the inner side wall 61 of the convex ring 6 and the side surface of the shaving track 2, or a chamfer 5 is provided for transition. The distance d between the groove bottom 31 of the hair inlet groove 3 at the outer side wall 62 of the convex ring 6 and the top surface of the mesh top 10 is ≥ 0.8 mm, so that the beard is not likely to touch the included angle between the groove bottom at the outer side wall 62 of the convex ring 6 and the side surface of the shaving track 2.

[0036] As Figure 7 In the illustrated embodiment, a convex ring 6 is provided on the mesh top 10 of the cutter net body 1. The shaving track 2 is located inside the convex ring 6. The hair inlet groove 3 only horizontally penetrates through the outer side wall 62 or the inner side wall 61 of the convex ring 6, so that the hair inlet groove 3 only has a groove bottom 31 at the corresponding outer side wall 62 or inner side wall 61. An obtuse angle 4 is formed between the groove bottom 31 and the side surface of the shaving track 2, or a chamfer 5 is provided for transition.

[0037] Regarding the connection structure between the groove bottom of the hair inlet groove 3 and the side surface of the shaving track 2, in one preferred embodiment, as Figure 2 and Figure 6 shown, the groove bottom 31 of the hair inlet groove 3 slopes downward obliquely towards the shaving track 2, and the included angle between the groove bottom 31 and the side surface of the shaving track 2 is an obtuse angle. Preferably, as Figure 2 shown, the side surface of the shaving track 2 has a straight section 21 parallel to the central axis OA of the rotary shaver cutter net. The groove bottom 31 is connected to the straight section 21, which can better avoid hair pulling; or, as Figure 6 shown, the straight section 21 can also be inclined at a small angle with respect to the central axis OA of the rotary shaver cutter net, and the inclination angle a is within 5°. The side surface of the shaving track 2 is a rotating surface around the central axis OA of the rotary shaver cutter net. Here, the straight section means that in the plane coplanar with the central axis OA of the rotary shaver cutter net, the intersection line of the straight section and this plane is a straight line segment or a line segment close to a straight line.

[0038] In another preferred embodiment, a chamfer 5 is provided for transition between the groove bottom 31 and the side surface of the shaving track 2. As Figure 3 shown, the chamfer 5 is an oblique angle provided between the groove bottom 31 of the hair inlet groove 3 and the shaving track 2, and the included angle between the plane where the oblique angle is located and the side surface of the shaving track 2 is an obtuse angle; or, as Figure 4 and Figure 5 shown, the chamfer 5 is a rounded corner provided between the groove bottom 31 of the hair inlet groove 3 and the side surface of the shaving track 2.

[0039] Preferably, the cutter net body 1 and the hair inlet groove 3 thereon are integrally injection molded by powder metallurgy, so as to facilitate the formation of corresponding obtuse angles 4 or chamfers 5. Among them, the chamfer 5 can be injection molded by an injection mold, and the obtuse angle 4 can be obtained by the inclination direction of the bottom of the hair inlet groove 3 and the slope of the side surface of the shaving track 2 formed by the mold.

[0040] As Figure 8 shown, preferably, a rounded corner R is provided at the upper end edge of the hair inlet groove 3 to improve the skin feel; preferably, a sharp blade 32 is provided at the lower end edge of the side wall of the hair inlet groove 3 to improve the cutting sharpness. It is easy to form a rounded corner at the upper end edge of the hair inlet groove and a sharp blade at the lower end edge of the side wall of the hair inlet groove by powder metallurgy.

[0041] For the powder metallurgy forming process, it includes the following steps: injecting a raw material with stainless steel powder through an injection molding machine to obtain a cutter net blank. The cutter net blank includes a cutter net body, and the cutter net body has an inner cavity with an opening facing downwards. An hair inlet groove is integrally formed on the net top of the cutter net body; putting the cutter net blank into a degreasing furnace for degreasing; putting the degreased cutter net blank into a sintering furnace for sintering; performing heat treatment hardening on the sintered cutter net blank; shaving off part of the material from the bottom of the net top of the cutter net body to obtain the fixed cutter surface of the shaving track, making the thickness of the net top at the position of the fixed cutter surface thinner, and the fixed cutter surface is used to fit with the top surface of the moving cutter teeth on the moving cutter.

[0042] As Figure 9 shown, a rotary shaver cutter net for preventing hair pulling includes a cutter net body 1 formed by powder metallurgy. A shaving track 2 is provided at the bottom of the net top 10 of the cutter net body 1. An hair inlet groove 3 for allowing hair to enter the shaving track 2 is provided on the net top 10 corresponding to the shaving track 2. A convex ring 6 is provided on the net top 10 of the cutter net body 1. The shaving track 2 is located inside the convex ring 6. The hair inlet groove 3 is integrally injection molded on the convex ring 6 by powder metallurgy. The hair inlet groove 3 horizontally penetrates the inner side wall 61 of the convex ring 6. The height h from the intersection line between the bottom 31 of the hair inlet groove 3 at the inner side wall 61 of the convex ring 6 and the side surface of the shaving track 2 to the top surface of the net top 10 is ≥ 0.6 mm, so as to avoid the angle formed between the bottom 31 of the hair inlet groove 3 at the inner side wall 61 of the convex ring 6 and the side surface of the shaving track 2 being too shallow relative to the top surface of the net top 20, and reduce the probability of hair pulling for medium and short beards.

Claims

1. A rotary shaver net for preventing hair pulling, characterized in that: It includes a cutter net body (1). On the bottom of the net top (10) of the cutter net body (1), there is a shaving track (2). On the net top (10), corresponding to the shaving track (2), there is a hair inlet groove (3) for hair to enter into the shaving track (2). An obtuse angle (4) is formed between the bottoms (31) of several grooves of the hair inlet groove (3) and the side surface of the shaving track (2), or a chamfer (5) is provided for transition.

2. The rotary shaver net for preventing hair pulling according to claim 1, wherein: On the net top (10) of the cutter net body (1), there is a convex ring (6). The shaving track (2) is located inside the convex ring (6). The hair inlet groove (3) transversely penetrates through the inner side wall (61) and the outer side wall (62) of the convex ring (6). An obtuse angle (4) is formed between the bottoms (31) of the hair inlet groove (3) at the inner side wall (61) and / or the outer side wall (62) of the convex ring (6) and the side surface of the shaving track (2), or a chamfer (5) is provided for transition.

3. The rotating razor net for preventing hair pulling according to claim 1, wherein: On the net top (10) of the cutter net body (1), there is a convex ring (6). The shaving track (2) is located inside the convex ring (6). On the outermost convex ring (6), the hair inlet groove (3) transversely penetrates through the inner side wall (61) and the outer side wall (62) of the convex ring (6). An obtuse angle (4) is formed between the bottoms (31) of the hair inlet groove (3) at the inner side wall (61) of the convex ring (6) and the side surface of the shaving track (2), or a chamfer (5) is provided for transition. The distance d between the bottoms (31) of the hair inlet groove (3) at the outer side wall (62) of the convex ring (6) and the top surface of the net top (10) is ≥ 0.8 mm.

4. The rotating razor blade net for preventing hair pulling according to claim 1, wherein: On the net top (10) of the cutter net body (1), there is a convex ring (6). The shaving track (2) is located inside the convex ring (6). The hair inlet groove (3) only transversely penetrates through the outer side wall (62) or the inner side wall (61) of the convex ring (6) so that the hair inlet groove (3) only has bottoms (31) at the corresponding outer side wall (62) or inner side wall (61). An obtuse angle (4) is formed between the bottoms (31) and the side surface of the shaving track (2), or a chamfer (5) is provided for transition.

5. A rotary shaver net for preventing hair pulling according to any one of claims 1 to 4, characterized in that: The bottoms (31) of the hair inlet groove (3) are obliquely downward towards the shaving track (2), and the angle between the bottoms (31) and the side surface of the shaving track (2) is an obtuse angle.

6. A rotary shaver net for preventing hair pulling according to claim 5, characterized in that: The side surface of the shaving track (2) has a straight section (21) parallel to the central axis (OA) of the rotary shaver cutter net, or relative to the central axis (OA) of the rotary shaver cutter net, the side surface of the shaving track (2) has a straight section (21) with an inclination angle a less than 5°. The bottoms (31) are connected to the straight section (21).

7. A rotary shaver net for preventing hair pulling according to any one of claims 1 to 4, characterized in that: The bottoms (31) of several grooves of the hair inlet groove (3) and the side surface of the shaving track (2) are transitioned through a chamfer (5). The chamfer (5) is an oblique angle provided between the bottoms (31) of the hair inlet groove (3) and the shaving track (2). The angle between the plane where the oblique angle is located and the side surface of the shaving track (2) is an obtuse angle, or the chamfer (5) is a rounded corner provided between the bottoms (31) of the hair inlet groove (3) and the side surface of the shaving track (2).

8. A rotating razor blade net for preventing hair pulling according to any one of claims 1-4, characterized in that: The cutter net body (1) and the hair inlet groove (3) thereon are integrally injection molded by powder metallurgy.

9. The rotating razor blade net for preventing hair pulling according to claim 8, characterized in that: The upper end edge of the hair inlet groove (3) is provided with a rounded corner (R), and the lower end edge of the side wall of the hair inlet groove (3) is provided with a sharp blade (32).

10. A rotary shaver net for preventing hair pulling, characterized in that: It includes a cutter net body (1) formed by powder metallurgy. A shaving track (2) is provided on the bottom of the net top (10) of the cutter net body (1). A hair inlet groove (3) for allowing hair to enter the shaving track (2) is provided on the net top (10) corresponding to the shaving track (2). A convex ring (6) is provided on the net top (10) of the cutter net body (1). The shaving track (2) is located inside the convex ring (6). The hair inlet groove (3) is integrally injection molded on the convex ring (6) by powder metallurgy. The hair inlet groove (3) horizontally penetrates the inner side wall (61) of the convex ring (6). The height h of the intersection line between the groove bottom (31) of the hair inlet groove (3) at the inner side wall (61) of the convex ring (6) and the side surface of the shaving track (2) from the top surface of the net top (10) is h≥0.6mm.

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