Rotary shaver net with irregular pore inlet holes

Abstract

The rotary shaver net comprises a rigid shaver net body, the net top of the shaver net body is provided with the air inlet holes which are closed on the periphery and vertically penetrate through the net top, and air inlet hole sets formed by a plurality of irregular air inlet hole sets are arranged in a plurality of areas of the net top in the circumferential direction. More than two hair feeding holes are formed in the radial direction and the circumferential direction of the knife net body. The knife net has the advantages of being simple in structure and high in hair feeding efficiency.

Description

Technical Field

[0001] The utility model relates to a rotary shaver net with irregular hair inlet pores.

Background Art

[0002] At present, for the rotary shavers on the market, their razor nets are generally stamped from relatively thick metal plates, such as made of steel with a thickness of more than 0.4 mm. Generally, after stamping and forming during manufacturing, due to the rigidity of the razor net, good structural strength and stable shape, hair inlet grooves can be machined on it by a grinding wheel. The hair inlet grooves usually have openings on the side to facilitate the introduction of hair. The razor net usually has more than two shaving tracks inside and outside. After setting the hair inlet grooves on the outer shaving track, in order to further improve the performance, circular hair inlet holes will be stamped on the inner shaving track. For example, in the razor net structure disclosed in the patent with the publication number CN101396833A, the material thickness of the net top corresponding to the inner shaving track can be made thinner to improve the shaving cleanliness. Since when punching holes by stamping, the holes within a certain small angle range are punched out first, and then rotated to another angle to punch other holes, so generally circular holes are punched, and the circular hair inlet holes are generally regular holes with the same size and evenly arranged in the same direction, and the intervals between the holes are relatively large to prevent stamping deformation. And for shaving cleanliness, the material thickness around the holes is usually very thin, and for safety, the size of the holes will also be restricted to prevent the skin from being squeezed in. This results in low shaving efficiency of the circular hair inlet holes.

[0003] The present utility model is made based on this situation.

Content of the Utility Model

[0004] The technical problem to be solved by the present utility model is to provide a rotary shaver net with irregular hair inlet pores, which has the characteristics of simple structure and high hair inlet efficiency.

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

[0006] A rotary shaver net with irregular hair inlet pores includes a rigid razor net body. On the net top of the razor net body, there are hair inlet pores that are closed around the perimeter and penetrate the net top up and down. In several regions around the circumference of the net top, there are hair inlet pore sets formed by an irregular collection of multiple hair inlet pores. Each hair inlet pore set has more than two hair inlet pores in the radial direction and the circumferential direction of the razor net body.

[0007] For a rotary shaver net with irregular hair inlet pores as described above, the hair inlet pores and the net top are integrally formed by powder metallurgy.

[0008] A rotary shaver net with irregular hair inlet pores as described above, wherein the hair inlet pores concentrated in the hair inlet pores include a plurality of polygonal pores. Taking the lower edge of the hair inlet pore as the measurement reference, the distance d between the polygonal pores and adjacent hair inlet pores satisfies 0.2 mm ≤ d ≤ 0.4 mm.

[0009] A rotary shaver net with irregular hair inlet pores as described above. When one side of the polygonal pore is adjacent to the side of another polygonal pore, the two adjacent sides on the two polygonal pores are parallel or substantially parallel.

[0010] A rotary shaver net with irregular hair inlet pores as described above. A plurality of irregular hair inlet pores are distributed in an annular area and assembled to form an annular hair inlet pore set.

[0011] A rotary shaver net with irregular hair inlet pores as described above. The maximum length and width of the hair inlet pores concentrated in the hair inlet pores are respectively less than 1.0 mm.

[0012] A rotary shaver net with irregular hair inlet pores as described above. Two or more shaving rings are provided around the center on the mesh top of the shaver net body. The outermost shaving ring is provided with a hair inlet groove having a lateral opening at the outer end and / or inner end, and the hair inlet pore set is arranged on the inner shaving ring.

[0013] A rotary shaver net with irregular hair inlet pores as described above. A concave interval groove is provided between two adjacent shaving rings to separate the inner and outer shaving rings. On the same inner shaving ring, a hair inlet groove having a lateral opening at the outer end and communicating with the interval groove is provided on the outer side thereof, and a hair inlet pore set is arranged inside the hair inlet groove.

[0014] A rotary shaver net with irregular hair inlet pores as described above. The middle parts of the hair inlet grooves on the outermost shaving ring are bent in the same direction.

[0015] A rotary shaver net with irregular hair inlet pores as described above. The upper port of the hair inlet pore is provided with a rounded corner.

[0016] A rotary shaver net with irregular hair inlet pores as described above. The lower edge of the hair inlet pore is provided with an acute-edge blade.

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

[0018] 1. In several regions of the net top of the present utility model in the circumferential direction, there are pore sets for hair entry formed by aggregating a plurality of irregular hair entry pores. The irregular hair entry pores in the pore sets for hair entry facilitate the entry of the shaver moving in different directions and hairs growing in different directions for cutting. The hair entry pores and the net top are integrally formed by powder metallurgy, with a simple structure, which simplifies the production process of the pore sets for hair entry, helps to reduce the distance between the irregular hair entry pores in the pore sets for hair entry, increases the area ratio of the pores in the pore sets for hair entry, and improves the hair entry efficiency.

[0019] 2. The upper port of the hair entry pore of the present utility model is provided with a rounded corner R, which gives a good skin feeling and high hair entry efficiency. The lower edge of the hair entry pore is provided with a sharp blade for sharp cutting.

[0020] 3. The cutter net of the present utility model is provided with hair entry grooves on the outermost shaving ring, which is conducive to guiding the hairs into and cutting medium and long beards. The inner shaving ring is provided with pore sets for hair entry, which is conducive to making the inner shaving ring thinner and improving the shaving cleanliness. The combination of the two makes the cutter net have better shaving efficiency and shaving cleanliness.

[0021] 4. The hair entry pores in the pore sets for hair entry of the present utility model include a plurality of polygonal pores. The distance d between the polygonal pores and the adjacent hair entry pores satisfies 0.2 mm ≤ d ≤ 0.4 mm, preferably 0.2 mm ≤ d ≤ 0.3 mm. The design of the polygonal pores can better utilize the space to increase the area ratio of the pores. Since the connecting material between the pores needs to have a certain width to meet the structural strength, when one side of a polygonal pore is adjacent to the side of another polygonal pore, the two adjacent sides of the two polygonal pores are parallel or substantially parallel, which is conducive to increasing the area ratio of the pores while meeting the strength of the connecting material between the pores.

Description of the Drawings

[0022] The following further details the specific implementation manners of the present utility model in conjunction with the drawings, where:

[0023] Figure 1 is a schematic structural diagram of an embodiment of a rotary shaver net with irregular hair entry pores of the present utility model;

[0024] Figure 2 is a schematic structural diagram of another embodiment of a rotary shaver net with irregular hair entry pores of the present utility model;

[0025] Figure 3 is Figure 2 a partial enlarged view of I in

[0026] Figure 4 is a schematic structural diagram of a third embodiment of a rotary shaver net with irregular hair entry pores of the present utility model;

[0027] Figure 5 It is a schematic structural diagram of the fourth embodiment of a rotary razor net with irregular hair inlet pores of the present utility model;

[0028] Figure 6 is Figure 5 The partial enlarged view at II in;

[0029] Figure 7 It is a schematic structural diagram of the fifth embodiment of a rotary razor net with irregular hair inlet pores of the present utility model;

[0030] Figure 8 It is a schematic cross-sectional view of a hair inlet groove or a hair inlet pore;

[0031] Figure 9 It is a schematic diagram of an embodiment where the knife net body is polygonal;

[0032] Figure 10 It is a schematic diagram of an embodiment where the knife net body is plum blossom-shaped;

[0033] Figure 11 It is a schematic structural diagram of the sixth embodiment of a rotary razor net with irregular hair inlet pores of the present utility model.

Detailed implementation manners

[0034] The present utility model will be further described below in conjunction with the accompanying drawings:

[0035] Such as Figures 1 to 11 shown, a rotary razor net with irregular hair inlet pores includes a rigid knife net body 1. An inlet pore 4a2 that is closed around and penetrates the net top 20 up and down is provided on the net top 20 of the knife net body 1. In several regions of the net top 20 around the circumferential direction, a pore set 400 formed by a collection of irregular multiple inlet pores 4a2 is provided. The pore set 400 has two or more inlet pores 4a2 in both the radial direction and the circumferential direction of the knife net body 1. The irregular multiple inlet pores 4a2 refer to multiple pores with different shapes arranged orderly or disorderly, or refer to multiple pores with the same non-circular shape arranged disorderly. The irregular inlet pores 4a2 in the pore set 400 facilitate the movement of the razor from different directions and the entry of hairs growing in different directions for cutting.

[0036] The maximum length and width of the inlet pores 4a2 in the pore set 400 are respectively less than 1.0 mm, preferably greater than 0.35 mm and less than 0.7 mm, so as to facilitate the arrangement of multiple inlet pores in both the radial direction and the circumferential direction of the knife net body 1 for the pore set 400, forming a dense pore area, so as to reduce the material thickness of the cutting area corresponding to the pore set 400 while increasing the hair inlet area.

[0037] The inlet pores 4a2 and the mesh top 20 are integrally formed by powder metallurgy, with a simple structure, which simplifies the production process of the inlet pore set 400, facilitates reducing the distance between the irregular inlet pores in the inlet pore set 400, increases the area ratio of the pores in the inlet pore set 400, and improves the hair inlet efficiency.

[0038] The cutter mesh body 1 formed by powder metallurgy can be circular, such as Figure 9 and Figure 10 shown. The cutter mesh body 1 can also be polygonal, plum blossom-shaped or of other shapes. When the cutter mesh body 1 is not circular, the circumferential direction of the cutter mesh body refers to the rotation direction of the moving cutter when it cooperates with the moving cutter, and the radial direction is perpendicular to the rotation direction of the moving cutter.

[0039] Furthermore, a chamfered corner R is provided at the upper port of the inlet pore 4a2 to improve the skin feel and the hair inlet efficiency. Further, a sharp blade 4b is provided at the lower edge of the inlet pore 4a2 to improve the sharpness of cutting.

[0040] Furthermore, the inlet pores 4a2 in the inlet pore set 400 include a plurality of polygonal pores 401. Taking the lower edge of the inlet pore 4a2 as the measurement reference, the distance d between the polygonal pore 401 and the adjacent inlet pore 4a2 satisfies 0.2 mm ≤ d ≤ 0.4 mm, preferably 0.2 mm ≤ d ≤ 0.3 mm. The design of the polygonal pores can better utilize the space to increase the area ratio of the pores.

[0041] Furthermore, as Figure 1 、 4 、6, 11 shown, when one side of the polygonal pore 401 is adjacent to the side of another polygonal pore 401, the two adjacent sides on the two polygonal pores 401 are parallel or substantially parallel. Since the connecting material between the pores needs to have a certain width to meet the structural strength, such as a width greater than 0.2 mm, and the two adjacent sides on the two polygonal pores 401 are parallel or substantially parallel, it is beneficial to increase the area ratio of the pores while meeting the strength of the connecting material between the pores.

[0042] Preferably, a plurality of irregular inlet pores 4a2 are distributed in an annular area and assembled to form an annular inlet pore set 400. As Figure 4 、 Figure 5 、 Figure 11 The embodiment is an annular inlet pore set formed by a plurality of irregular polygonal pores, or as shown in 1 and Figure 2 the embodiment, the inlet pores in the inlet pore set 400 can include polygonal pores, elliptical pores or pores of other shapes.

[0043] Of course, as Figure 7 shown, the inlet pore set 400 can also be a collection of a plurality of inlet pores in a certain arc-shaped area on the shaving ring.

[0044] Preferably, a fillet transition is provided between two adjacent sides of the polygonal hole 401.

[0045] Preferably, as Figure 1 and Figure 7 shown in the embodiment, two or more shaving rings 3 are provided around the center on the mesh top 20 of the cutter net body 1. An inlet hair groove 4a1 with a lateral opening at the outer end and / or inner end is provided on the outermost shaving ring 3, and the inlet pore set 400 is arranged on the inner shaving ring 3. By providing the inlet hair groove 4a1 on the outermost shaving ring 3 of the cutter net, the inlet hair groove 4a1 penetrates the shaving ring 3 up and down and has an opening on the side for hair to enter from the side, which is conducive to guiding the hair into and cutting medium-length beards. The inner shaving ring 3 is provided with the inlet pore set 400, which is conducive to making the inner shaving ring 3 thinner and improving the shaving cleanliness. The combination of the two makes the cutter net have better shaving efficiency and shaving cleanliness.

[0046] Preferably, as Figure 5 shown in the embodiment, a spacing groove 14 is provided between two adjacent shaving rings 3 and is concave downward to separate the inner and outer shaving rings 3. On the outer side of the same inner shaving ring 3, an inlet hair groove 4a1 with a lateral opening at the outer end communicating with the spacing groove 14 is provided. An inlet pore set 400 is arranged inside the inlet hair groove 4a1. During the moving shaving process, the spacing groove 14 is conducive to the medium-length beards pressed down by the cutter net to bounce up, and the inlet hair groove 4a1 communicating with the spacing groove 14 is conducive to the medium-length beards in the spacing groove 14 entering for cutting. The hair cut by the inlet hair groove 4a1 can quickly enter the position of the inlet pore set 400 and be further shaved clean.

[0047] Preferably, the middle parts of the inlet hair grooves 4a1 on the outermost shaving ring 3 are bent in the same direction, as Figure 1 shown. Since the moving cutter teeth 5 on the moving cutter generally rotate in the middle area corresponding to the inlet hair groove, when the moving cutter teeth 5 move in the direction in which the middle of the inlet hair groove is bent, it is conducive to the moving cutter teeth avoiding the lateral opening of the inlet hair groove and improving safety.

[0048] For the powder metallurgy integral molding process, it includes the following steps:

[0049] A. 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 1. The cutter net body 1 has an inner cavity with an opening facing downward. A plurality of downwardly concave inlet hair grooves and inlet pores are integrally formed on the mesh top 20 of the cutter net body 1. The inlet hair grooves and inlet pores have groove walls that are inclined upward and outward. A fillet R is formed between the groove walls and the top surface of the mesh top of the cutter net body 1.

[0050] B. Placing the cutter net blank into a degreasing furnace for degreasing;

[0051] C. Put the degreased cutter net blank into a sintering furnace for sintering;

[0052] D. Heat-treat and harden the sintered cutter net blank. Preferably, the heat treatment hardening makes the hardness of the cutter net blank reach above 40 HRC;

[0053] E. Cut off part of the material from the bottom of the top of the cutter net body 1 to make the shaving ring 3 thinner, and make the hair inlet groove and the hair inlet pores penetrate the top 20 from top to bottom.

[0054] In one embodiment, the raw material with stainless steel powder is made into granular raw material by a granulator after mixing stainless steel powder and POM powder evenly, wherein the mass proportion of POM powder is 5% - 15%; the stainless steel powder can be 440C stainless steel powder or 316 stainless steel powder or 420 stainless steel powder.

[0055] In step B, the degreasing temperature is 100°C - 150°C. Oxalic acid is introduced into the degreasing furnace to vaporize and remove the POM material in the cutter net blank at high temperature, and the degreasing time is 6h - 10h.

Claims

1. A rotary shaver with irregular hair-entry pores, characterized in that: The invention comprises a rigid knife net body (1), wherein a mesh top (20) of the knife net body (1) is provided with inlet holes (4a2) which are closed on all sides and penetrate the mesh top (20) from top to bottom, and inlet hole groups (400) formed by a plurality of irregular inlet holes (4a2) are provided in a plurality of regions around the mesh top (20) in a circumferential direction, wherein the inlet hole group (400) has more than two inlet holes (4a2) in both the radial direction and the circumferential direction of the knife net body (1).

2. A rotary shaver with irregular hair-entry holes according to claim 1, characterized in that: The inlet holes (4a2) and the mesh top (20) are integrally formed by powder metallurgy.

3. A rotary shaver with irregular hair-entry holes according to claim 2, characterized in that: The inlet pores (4a2) in the inlet pore set (400) include a plurality of polygonal holes (401), and the lower edge of the inlet pore (4a2) is used as a measurement reference, and the spacing d between the polygonal hole (401) and the adjacent inlet pore (4a2) satisfies 0.2mm≤d≤0.4mm.

4. A rotary shaver with irregular hair-entry holes according to claim 3, characterized in that: When one side of the polygonal hole (401) is adjacent to the side of another polygonal hole (401), the two adjacent sides of the two polygonal holes (401) are parallel or substantially parallel.

5. A rotary shaver with irregular hair-entry holes according to claim 3, characterized in that: A plurality of irregular inlet pores (4a2) are distributed in an annular region and assembled to form an annular inlet pore set (400).

6. A rotary shaver with irregular hair-entry holes according to any one of claims 1 to 5, characterized in that: The maximum length and width of the inlet pores (4a2) in the inlet pore set (400) are respectively less than 1.0 mm.

7. A rotary shaver with irregular hair-entry holes according to any one of claims 1 to 5, characterized in that: More than two shaving rings (3) are arranged around the center on the net top (20) of the knife net body (1), the outermost shaving ring (3) is provided with a hair inlet groove (4a1) with a lateral opening at the outer end and / or the inner end, and the hair inlet hole set (400) is arranged on the inner shaving ring (3).

8. A rotary shaver with irregular hair-entry holes according to claim 7, characterized in that: A recessed spacing groove (14) is provided between two adjacent shaving rings (3) to separate the inner and outer shaving rings (3); a hair inlet groove (4a1) having a lateral opening at its outer end and connected to the spacing groove (14) is provided on the outer side of the same inner shaving ring (3); and a hair inlet hole set (400) is provided on the inner side of the hair inlet groove (4a1).

9. A rotary shaver with irregular hair-entry holes according to claim 7, characterized in that: The middle parts of the hair feeding grooves (4a1) on the outermost shaving ring (3) are all bent in the same direction.

10. A rotary shaver blade with irregular hair-entry holes according to any one of claims 2 to 5, 8 and 9, characterized in that: The upper end of the hair inlet hole (4a2) is provided with a rounded corner R, and the lower edge of the hair inlet hole (4a2) is provided with an acute-angled blade (4b).

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