Hair inlet groove structure of rotary shaver net

Abstract

The utility model discloses a hair inlet groove structure of a rotary shaver net, which comprises a hair inlet groove arranged on the top of the rotary shaver net and penetrating into a shaving track, the hair inlet groove is provided with a front edge and a rear edge, the front edge and the rear edge form a hair inlet groove with different widths, and the width of the hair inlet groove is larger than the width of the hair inlet groove. Wherein the middle part of the shaving track is correspondingly provided with a narrow part of the hair feeding groove and wide parts positioned on the two sides of the narrow part, the structure is simple, and the hair feeding efficiency is good.

Description

[Technical field]

[0001] The utility model relates to a hair feeding groove structure of a rotary shaver net. [Background technology]

[0002] The hair feeding grooves of existing rotary shaver blades are usually straight grooves cut by a grinding wheel. In order to prevent the skin from being cut by the blade when it squeezes into the shaving track through the hair feeding grooves, the width of the hair feeding grooves is usually set very small, such as about 0.25mm-0.26mm. This leads to a problem that the hair feeding efficiency is poor, and the shaver needs to be moved repeatedly to shave the hair cleanly.

[0003] The utility model is made based on this situation. [Contents of the utility model]

[0004] The technical problem to be solved by the utility model is to provide a hair feeding groove structure of a rotary shaver net with simple structure and good hair feeding efficiency.

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

[0006] A hair feed groove structure of a rotary razor mesh comprises a hair feed groove arranged on the mesh top of the rotary razor mesh and penetrating into a shaving track, wherein the hair feed groove has a front edge and a rear edge, and the front edge and the rear edge form a hair feed groove with a wide and narrow interval, wherein the middle part of the shaving track corresponds to a narrow part of the hair feed groove and wide parts located on both sides of the narrow part.

[0007] In the hair feeding slot structure of a rotary razor mesh as described above, a cutting edge is arranged on the front edge.

[0008] In the hair feeding groove structure of a rotary razor blade as described above, the blade is an acute-angle structure.

[0009] In the hair feed groove structure of a rotating razor mesh as described above, a mesh strip is formed between two adjacent hair feed grooves, and in the cross section of the mesh strip, the front side of the mesh strip has an inclined straight line segment, and the angle between the straight line segment and the fixed blade surface forms a blade; or the front side of the mesh strip has an inwardly concave arc segment, and the angle between the concave arc segment and the fixed blade surface forms a blade; or the front side of the mesh strip includes a first inclined segment and a second inclined segment, and relative to the up and down directions, the inclination of the first inclined segment is greater than that of the second inclined segment, and the angle between the first inclined segment and the fixed blade surface forms a blade.

[0010] As described above, in the hair feeding groove structure of the rotary razor net, when viewed upward from the bottom of the rotary razor net, corresponding to the position of the shaving track, the front edge is a straight line or a concave curve, and the rear edge is a concave and convex curve.

[0011] In the hair feeding groove structure of a rotary razor blade as described above, the slope of the side wall forming the blade on the front edge of the hair feeding groove is greater than the slope of the side wall corresponding to the rear edge.

[0012] In the hair inlet groove structure of a rotary razor blade as described above, the upper end of the hair inlet groove is provided with a rounded corner.

[0013] A hair feed groove structure of a rotating razor mesh as described above, wherein the hair feed groove includes a first hair feed groove, a second hair feed groove and / or a third hair feed groove, wherein the first hair feed groove has a side opening at its outer end in the transverse direction, the second hair feed groove is closed on all sides, and the third hair feed groove has a side opening at its inner end in the transverse direction and the outer end is a terminal end.

[0014] In the hair feed groove structure of a rotary razor blade as described above, a plurality of the first hair feed grooves and / or the third hair feed grooves are provided with chamfers at their side openings.

[0015] In the hair feeding groove structure of a rotary shaver mesh as described above, the hair feeding groove and the mesh top are integrally formed by powder metallurgy.

[0016] Compared with the prior art, the utility model has the following advantages: the hair feeding groove is a structure of alternating wide and narrow parts, and the hair feeding groove has a narrow part corresponding to the middle part of the shaving track and wide parts located on both sides of the narrow part. The narrow part can effectively prevent the skin from squeezing into the hair feeding groove, which is conducive to increasing the width of the wide part, thereby improving the efficiency of hair entering the hair feeding groove.

Brief Description of the Drawings

[0017] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0018] Figure 1 It is a structural schematic diagram of a rotary shaver net having the hair feeding groove structure of the utility model;

[0019] Figure 2 It is a bottom view of a rotary razor blade having the hair feeding groove structure of the utility model;

[0020] Figure 3 yes Figure 2 The cross-sectional view along the AA direction;

[0021] Figure 4 It is a structural schematic diagram of another embodiment of a rotary shaver blade having the hair feeding groove structure of the utility model;

[0022] Figure 5a-5d are cross-sectional schematic diagrams of different embodiments of the hair feed slot;

[0023] Figure 6a-6e It is a schematic diagram of the bottom structure of different wool feeding grooves of the utility model;

[0024] Figure 7 Schematic diagram of an embodiment in which the bottom of the groove in the knife mesh blank is closed;

[0025] Figure 8 It is a schematic diagram of an embodiment in which the groove in the knife net blank is a through hole that passes through from top to bottom and the bottom of the groove is not closed. [Specific implementation method]

[0026] The utility model is further described below in conjunction with the accompanying drawings:

[0027] like Figures 1 to 6e The hair feeding groove structure of a rotary razor mesh is shown, wherein the rotary razor mesh comprises a mesh body 1, the mesh body 1 is provided with an inner cavity 2, the mesh top 20 of the mesh body 1 is provided with a shaving track 6 at the bottom, the shaving track 6 is used for the movable cutter to rotate therein, the hair feeding groove structure comprises a hair feeding groove 4a which is arranged on the mesh top 20 of the rotary razor mesh and penetrates into the shaving track 6, with the direction of the movable cutter rotating as a reference, the hair feeding groove 4a has a front edge 401 and a rear edge 402, the front edge 401 and the rear edge 402 form a hair feeding groove 4a with a wide and narrow alternating width, wherein the middle portion of the shaving track 6 corresponds to a narrow portion 403 of the hair feeding groove 4a and wide portions 404 located on both sides of the narrow portion 403. The narrow portion 403 can effectively prevent the skin from squeezing into the hair feeding groove 4a, thereby facilitating the widening of the wide portion 404, thereby improving the efficiency of hair entering the hair feeding groove 4a.

[0028] The front edge 401 is provided with a blade 4b for cooperating with the rotating movable knife to cut the hair in the hair feeding groove 4a.

[0029] Preferably, if Figure 5a-5d In the illustrated embodiment, the blade 4b is an acute angle to improve the sharpness of cutting.

[0030] A mesh strip 30 is formed between two adjacent hair feeding grooves 4a. The cross section of the mesh strip 30 is as follows: Figure 5a , 5b In the embodiment shown, the side corresponding to the front edge 401 is the front side, and the front side of the mesh strip 30 has an inclined straight line segment 301, and the angle between the straight line segment 301 and the fixed blade surface 5 forms a blade 4b; Figure 5c In the embodiment shown, the front side of the mesh strip 30 has a concave arc segment 302, and the angle between the concave arc segment 302 and the fixed blade surface 5 forms a blade 4b; Figure 5d In the illustrated embodiment, the front side of the mesh strip 30 includes a first inclined section 304 and a second inclined section 305. Relative to the up and down directions, the slope of the first inclined section 304 is greater than that of the second inclined section 305. The angle between the first inclined section 304 and the fixed blade surface 5 forms a blade 4b.

[0031] Observe from the bottom of the rotating shaver net upward, corresponding to the position of the shaving track 6, as shown in FIG. Figure 6a and 6d In the embodiment shown, the front edge 401 is a straight line, or Figure 6b and 6e In the illustrated embodiment, the front edge 401 is a concave curve, so that the front edge 401 has better cutting performance, and the rear edge 402 is a concave and convex curve.

[0032] Preferably, if Figure 5b-5d In the embodiment shown, the slope of the side wall forming the blade 4b on the front edge 401 of the feed groove 4a is greater than the slope of the corresponding side wall of the rear edge 402, which improves the cutting sharpness of the feed groove 4a while improving the structural strength of the rear edge 402 and avoiding structural deformation of the protruding rear edge 402.

[0033] The upper end of the hair feeding groove 4a is provided with a rounded corner R, so that the entrance of the hair feeding groove 4a at the top is significantly enlarged, which is easy to introduce hair and improve the hair feeding and cutting efficiency.

[0034] The hair feeding groove 4a includes a first hair feeding groove 4a1, a second hair feeding groove 4a2 and / or a third hair feeding groove 4a3. Figure 1 In the embodiment shown, the first hair feeding groove 4a1 has a side opening at its outer end in the transverse direction and a terminal end at its inner end, the second hair feeding groove 4a2 is closed on all sides, and the third hair feeding groove 4a3 has a side opening at its inner end in the transverse direction and a terminal end at its outer end.

[0035] Or, if Figure 4 In the illustrated embodiment, the first hair feeding groove 4a1 has a side opening at its outer end in the lateral direction, and similarly has a side opening at its inner end.

[0036] Furthermore, some of the first hair feeding grooves 4a1 and / or the third hair feeding grooves 4a3 are provided with chamfers 7 at their side openings, which facilitates the introduction of hair into the shaving track 6 for cutting.

[0037] The hair feeding groove 4a and the mesh top 20 are integrally formed by powder metallurgy, that is, the hair feeding groove 4a and the mesh top 20 are integrally formed by injection molding, which has a simple structure and is conducive to mass production and improved production efficiency.

[0038] The following is an embodiment of a powder metallurgy forming process, comprising the following steps:

[0039] A. A raw material having stainless steel powder is injection molded by an injection molding machine to obtain a knife net blank, wherein the knife net blank comprises a knife net body 1, wherein the knife net body 1 has an inner cavity 2 with an opening facing downward, and a plurality of downwardly concave grooves 4 are integrally formed on the mesh top of the knife net body 1, wherein the groove 4 has a groove wall inclined upward and outward, and a rounded corner R is formed between the groove wall and the top surface of the mesh top of the knife net body 1;

[0040] B. Put the knife mesh blank into the degreasing furnace for degreasing;

[0041] C. Put the degreased knife mesh blank into the sintering furnace for sintering;

[0042] D. heat-treating and hardening the sintered blade mesh blank. Preferably, the heat-treating and hardening process makes the hardness of the blade mesh blank reach 40HRC or above;

[0043] E. Part of the material is cut off from the bottom of the mesh top of the knife mesh body 1 to form a fixed knife surface 5. At the same time, a hair feed groove 4a that is connected to each other from top to bottom is formed at the groove 4, and a blade 4b with an acute angle is formed on the side wall of the hair feed groove 4a. A shaving track 6 is formed below the fixed knife surface 5 for the movable knife teeth to rotate.

[0044] In one embodiment, a raw material having stainless steel powder is prepared by mixing stainless steel powder and POM powder evenly and then manufacturing the granular raw material through a granulator, wherein the mass of POM powder accounts for 5% to 15%; the stainless steel powder can be selected from 440C stainless steel powder, 316 stainless steel powder or 420 stainless steel powder.

[0045] In step B, the degreasing temperature is 100° C. to 150° C. Oxalic acid is introduced into the degreasing furnace to vaporize the POM material in the knife mesh blank at high temperature and remove it. The degreasing time is 6 h to 10 h.

[0046] Preferably, in the above step A, Figure 7 As shown, the bottom of the groove 4 is closed. In step C, the knife mesh blank obtained after sintering has a material thickness T1 of the closed part of the bottom of the groove 4 ≥ 0.2 mm, which is conducive to injection molding of the groove 4. The depth T2 of the groove 4 is ≥ 0.2 mm, which is conducive to processing the roughening groove 4a while ensuring the thickness between the fixed knife surface 5 and the top surface of the mesh top. Figure 7 As shown by the dotted line L1, material is cut from the bottom of the mesh top of the knife mesh body 1 to the position L1, and the position L1 is located above the bottom of the groove 4, so that the groove is connected from top to bottom to form a hair feeding groove.

[0047] Of course, you can also Figure 8 As shown, the groove 4 can also pass through the top of the net from top to bottom, and the bottom is not closed.

Claims

1. A hair feeding groove structure of a rotary shaver net, characterized in that: The invention comprises a hair feeding groove (4a) arranged on the mesh top (20) of a rotating shaver mesh and extending into a shaving track (6), wherein the hair feeding groove (4a) has a front edge (401) and a rear edge (402), wherein the front edge (401) and the rear edge (402) form a hair feeding groove (4a) with a wide and narrow interval, wherein the middle part of the shaving track (6) corresponds to a narrow part (403) of the hair feeding groove (4a) and wide parts (404) located on both sides of the narrow part (403).

2. The hair feeding groove structure of a rotary shaver according to claim 1, characterized in that: The front edge (401) is provided with a blade (4b).

3. The hair feeding groove structure of a rotary shaver blade according to claim 2, characterized in that: The blade (4b) is an acute-angle structure.

4. The hair feeding groove structure of a rotary shaver blade according to claim 3, characterized in that: A mesh strip (30) is formed between two adjacent hair feeding grooves (4a); in a cross section of the mesh strip (30), the front side of the mesh strip (30) has an inclined straight line segment (301), and the angle between the straight line segment (301) and the fixed blade surface (5) forms a blade (4b); or the front side of the mesh strip (30) has an inwardly concave arc segment (302), and the angle between the concave arc segment (302) and the fixed blade surface (5) forms a blade (4b); or the front side of the mesh strip (30) includes a first inclined segment (304) and a second inclined segment (305), and relative to the up and down direction, the inclination of the first inclined segment (304) is greater than that of the second inclined segment (305), and the angle between the first inclined segment (304) and the fixed blade surface (5) forms a blade (4b).

5. The hair feeding groove structure of a rotary shaver blade according to claim 2, characterized in that: Observing upward from the bottom of the rotating razor blade, corresponding to the position of the shaving track (6), the front edge (401) is a straight line or a concave curve, and the rear edge (402) is a concave and convex curve.

6. The hair feeding groove structure of a rotary shaver blade according to claim 5, characterized in that: The slope of the side wall forming the blade (4b) on the front edge (401) of the hair feeding groove (4a) is greater than the slope of the side wall corresponding to the rear edge (402).

7. A hair feeding groove structure of a rotary shaver blade according to any one of claims 1 to 6, characterized in that: The upper end of the hair inlet groove (4a) is provided with a rounded corner R.

8. A hair feeding groove structure of a rotary shaver blade according to any one of claims 1 to 6, characterized in that: The hair feed groove (4a) comprises a first hair feed groove (4a1), a second hair feed groove (4a2) and / or a third hair feed groove (4a3); the first hair feed groove (4a1) has a side opening at its outer end in the transverse direction, the second hair feed groove (4a2) is closed on all sides, and the third hair feed groove (4a3) has a side opening at its inner end in the transverse direction and the outer end is a terminal end.

9. The hair feeding groove structure of a rotary shaver blade according to claim 8, characterized in that: A plurality of the first hair feeding grooves (4a1) and / or the third hair feeding grooves (4a3) are provided with chamfers (7) at their side openings.

10. A hair feeding groove structure of a rotary shaver blade according to any one of claims 1 to 6, characterized in that: The hair feeding groove (4a) and the mesh top (20) are integrally formed by powder metallurgy.

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