Cutting assembly of shaver and shaver net of cutting assembly

Abstract

The cutting assembly comprises the cutter net and a movable cutter assembly, the cutter net comprises a cutter net body formed through powder metallurgy, the cutter net body is provided with an inner cavity, a solid center positioning column is integrally formed at the bottom of the net top of the cutter net body, and the cutter net body is provided with a movable cutter assembly. A plurality of circles of shaving rails are arranged at the bottom of the net top of the knife net body, a pore inlet hole is formed in the net top of the knife net body, the movable knife assembly comprises a movable knife support and a movable knife fixed to the movable knife support, a plurality of circles of movable knife teeth are arranged on the movable knife corresponding to the shaving rails, and a center positioning hole matched with the center positioning column is formed in the top of the movable knife support. A transmission connecting part is arranged at the bottom of the movable cutter support, a water through hole is formed in the position, between the center positioning hole and the movable cutter teeth on the inner ring, of the movable cutter support, the solid center positioning column is beneficial to shrinking the center positioning column and the center positioning hole so as to enlarge the water through hole, and soft flocks between the center positioning column and the movable cutter teeth can be washed away and discharged.

Description

[Technical Field]

[0001] This utility model relates to a cutting component for a razor, and also to a blade mesh for a razor. [Background Technology]

[0002] Currently, the foils of rotary shavers on the market are usually formed by stamping steel. To ensure smoother rotation of the moving blades within the foil, a central positioning post is typically stamped downwards at the center of the foil. The moving blade assembly includes moving blades and a moving blade support. A central positioning hole that mates with the central positioning post is provided on the moving blade support. The foil typically has concentric inner and outer rings of shaving tracks. The moving blades are usually also mounted on a shaver disc with corresponding inner and outer rings of moving teeth. The moving blade support is fixed to the shaver disc and located inside the inner ring of moving teeth. The moving blade support extends from the bottom of the shaver disc and is connected to a drive mechanism. After shaving, hair usually accumulates between the moving blade assembly and the foil. Because there is a large gap between the outer side of the moving blade assembly and the foil, the hair between the outer side of the moving blade assembly and the foil is relatively easy to rinse away. However, the hair between the central positioning post and the moving blade teeth, especially the hair between the inner ring of the moving blade teeth and the central positioning post, is relatively difficult to rinse away. Therefore, a water passage hole is usually opened on the moving blade holder from top to bottom. When rinsing, the shaver head is flipped up so that the foil and moving blade assembly are turned upside down. Water enters through the water passage hole at the bottom to wash away the hair surrounding the central positioning post and the moving blade teeth. However, due to the small size of the cutting edge, the space inside the moving teeth of the inner ring is relatively limited. The outer diameter of the stamped center positioning post is usually quite large. Since the thickness of the steel material itself is about 0.5mm, the center positioning post is a hollow structure after stamping. In addition, the outer diameter of the center positioning post is generally about 2.5mm to ensure the strength of the die punch. It is difficult to reduce it further. Even if it is reduced, the reduction is limited and it comes at the cost of the die punch life. The water passage is located outside the center positioning hole and at a certain distance from the center positioning hole to ensure the strength of the side wall of the center positioning hole. Therefore, the water passage is generally narrow. The water flow and velocity through the water passage are relatively small. The flushing effect on the shavings hidden between the center positioning post and the moving teeth is not obvious, which is not conducive to chip removal. This makes it easy for shavings to accumulate between the center positioning post and the moving teeth.

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

[0004] The technical problem to be solved by this utility model is to provide a cutting component for a razor with a simple structure.

[0005] To solve the above-mentioned technical problems, this utility model provides a cutting component for a razor, including a blade net. The blade net contains a moving blade assembly. The blade net includes a blade net body formed by powder metallurgy. The blade net body has a downward-facing inner cavity. A solid central positioning post is integrally formed at the bottom of the top of the blade net body. Several concentric shaving tracks are arranged around the central positioning post at the bottom of the top of the blade net body. An inlet hole is provided on the top of the blade net body, and the inlet hole is vertically connected to the shaving tracks. The moving blade assembly includes a moving blade support and moving blades fixed on the moving blade support. Several concentric moving blade teeth are arranged on the moving blades corresponding to the shaving tracks. A central positioning hole that mates with the central positioning post is provided on the top of the moving blade support. A transmission connection part is provided at the bottom of the moving blade support. Several water passages are provided on the moving blade support between the central positioning hole and the inner concentric moving blade teeth, extending vertically through the moving blade support and surrounding the central positioning hole.

[0006] In the cutting assembly of a razor as described above, the outer diameter d of the central positioning post is ≤ 2.0 mm, and the width w of the water passage is ≥ 1.0 mm.

[0007] In the razor cutting assembly described above, the outer diameter d of the central positioning post satisfies 1.0mm≤d≤1.5mm, the width w of the water passage hole is ≥1.3mm, the transmission connection part has a groove structure, and the water passage hole and the transmission connection part are integrated.

[0008] In the cutting assembly of a razor as described above, there are two or more but no more than six water passages arranged around the circumference, and the length a of the water passages is ≥ 1.3 mm.

[0009] As described above, in a razor cutting assembly, the bottom of the top of the foil body has a downwardly protruding thickened portion, the thickened portion being located above the central positioning hole, and the central positioning post being connected to the thickened portion.

[0010] In the cutting component of a razor as described above, the thickened portion is located within the area corresponding to the inscribed circle C formed by several water holes in the vertical projection.

[0011] Another technical problem to be solved by this utility model is to provide a razor blade screen with a simple structure. The solid central positioning post formed by powder metallurgy is conducive to reducing the outer diameter and increasing the width of the water passage in the radial direction between the central positioning hole and the moving blade teeth of the inner ring on the moving blade assembly, thereby increasing the cross-sectional area of ​​the water passage.

[0012] To solve the above-mentioned technical problems, this utility model provides a razor blade net, including a blade net body formed by powder metallurgy. The blade net body has an inner cavity with an opening facing downwards. A solid central positioning post is integrally formed at the bottom of the top of the blade net body. The blade net body has several rings of shaving tracks around the outer side of the central positioning post at the bottom of the top of the blade net body. The top of the blade net body has hair inlet holes, which are vertically connected to the shaving tracks.

[0013] In the blade foil of the razor described above, the outer diameter d of the central positioning post is ≤ 2.0 mm.

[0014] In the blade foil of the shaver described above, the outer diameter d of the central positioning post satisfies 1.0mm≤d≤1.5mm.

[0015] As described above, the razor foil has a downwardly protruding thickened portion at the bottom of the top of the foil body, and the central positioning post is connected below the thickened portion.

[0016] Compared with the prior art, the present invention has the following advantages: In the present invention, the blade mesh body and the central positioning post are integrally formed by powder metallurgy, and the central positioning post adopts a solid structure, which is conducive to reducing the outer diameter of the central positioning post. After the outer diameter of the central positioning post is reduced, the corresponding diameter of the central positioning hole can be reduced, which is conducive to increasing the width of the water passage hole in the radial direction of the moving blade assembly, increasing the water flow rate and velocity through the water passage hole during rinsing, so as to better flush away and discharge the burrs hidden between the central positioning post and the moving blade teeth. [Attached Image Description]

[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0018] Figure 1 This is an exploded view of the cutting component of a razor according to this utility model;

[0019] Figure 2 This is an exploded view of the cutting component of a razor according to this utility model;

[0020] Figure 3 This is a top view of a cutting component of a razor according to the present invention;

[0021] Figure 4 This is one embodiment of the cutting component of a razor according to the present invention. Figure 3 A cross-sectional view along the AA direction;

[0022] Figure 5 This is a schematic diagram of a structural embodiment in which the central positioning post is connected by a thickened portion;

[0023] Figure 6This is a schematic diagram of another embodiment where the central positioning post is connected by the thickened part;

[0024] Figure 7 This is a top view of the moving blade assembly;

[0025] Figure 8 This is a cross-sectional view of one embodiment of the blade mesh.

Detailed Implementation Methods

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] like Figure 1-8 The diagram shows a cutting component for a razor, including a foil 10. The foil 10 includes a foil body 1, which is formed by powder metallurgy. The foil body 1 has a downward-facing inner cavity 2. A solid central positioning post 3 is integrally formed at the bottom of the foil top of the foil body 1. The foil body 1 has several concentric shaving tracks 4 around the outer side of the central positioning post 3 at the bottom of the foil top. The foil body 1 has hair inlet holes 5 on the foil top, which are vertically connected to the shaving tracks 4. A moving blade is provided inside the foil 10. The component includes a moving blade bracket 7 and a moving blade 8 fixed on the moving blade bracket 7. The moving blade 8 has several rings of moving blade teeth 81 corresponding to the shaving track 4. The top of the moving blade bracket 7 has a central positioning hole 71 that mates with the central positioning post 3. The bottom of the moving blade bracket 7 has a transmission connection part 72. The moving blade bracket 7 has several water passage holes 73 that pass through the moving blade bracket 7 vertically between the central positioning hole 71 and the inner ring of moving blade teeth 81. The water passage holes 73 are several in number and surround the outside of the central positioning hole 71.

[0028] The blade body 1 and the central positioning post 3 are integrally formed by powder metallurgy, and the central positioning post 3 has a solid structure, which makes it easier to reduce the outer diameter of the central positioning post 3. After the outer diameter of the central positioning post 3 is reduced, the corresponding diameter of the central positioning hole 71 can be reduced, which helps to increase the width w of the water passage hole 73 in the radial direction of the moving blade assembly, and increase the water flow rate and velocity through the water passage hole 73 during flushing, so as to better flush away and discharge the burrs hidden between the central positioning post and the moving blade teeth.

[0029] Preferably, the outer diameter d of the central positioning post 3 is ≤ 2.0 mm, and the width w of the water passage hole 73 is ≥ 1.0 mm; further, the outer diameter d of the central positioning post 3 satisfies 1.0 mm ≤ d ≤ 1.5 mm, and the width w of the water passage hole 73 is ≥ 1.3 mm. This is beneficial for ensuring the strength of the central positioning post 3, while also allowing the water passage hole 73 to be larger, so that water can flow smoothly through the water passage hole 73 during flushing, improving the flushing and chip removal effect. Moreover, the large water passage hole 73 also facilitates the falling of fine debris from top to bottom out of the cutting assembly when the cutter head vibrates.

[0030] The water passage 73 is provided in two or more but no more than six circumferential directions, and the length a of the water passage 73 is ≥1.3mm, preferably three, to avoid the water passage 73 being too short.

[0031] The transmission connection part 72 has a groove structure, and the lower middle part of the water passage hole 73 is integrated with the transmission connection part 72 to form a large notch, so that when the cutting component is flipped over to rinse, the water flow first falls on the large notch and then flows away from the water passage hole 73, making it easier for water to enter the water passage hole 73.

[0032] Preferably, such as Figure 5 and Figure 6 In the embodiment shown, the bottom of the top of the knife net body 1 is provided with a downwardly protruding thickened part 6. The thickened part 6 is located above the central positioning hole 71. The central positioning post 3 is connected to the thickened part 6, thereby improving the strength of the central positioning post 3 and making it easier to reduce the outer diameter of the central positioning post 3.

[0033] In the vertical projection, the thickened part 6 is located in the area corresponding to the inscribed circle C formed by several water passage holes 73, so as to avoid the thickened part 6 blocking the water passage holes 73.

[0034] exist Figure 5 In the illustrated embodiment, the thickened portion 6 has a downward-facing conical portion 61, and the central positioning post 3 is connected below the conical portion 61.

[0035] The powder metallurgy forming process for shaving nets includes the following steps: A raw material containing stainless steel powder is injection molded into a shaving net blank using an injection molding machine. The shaving net blank includes a shaving net body with a downward-facing inner cavity. Multiple downward-facing recesses are integrally formed on the top of the shaving net body, and a central positioning post is provided at the bottom of the top of the shaving net body. The shaving net blank is then placed in a degreasing furnace for degreasing. The degreased shaving net blank is then placed in a sintering furnace for sintering. The sintered shaving net blank is then subjected to heat treatment for hardening. A portion of the material is removed from the bottom of the top of the shaving net body to form a fixed blade surface. Simultaneously, an interconnected shaving pore is formed at the recess, and a shaving track for the rotating movement of the moving blades is formed below the fixed blade surface.

[0036] In one embodiment, the raw material containing stainless steel powder is produced by uniformly mixing stainless steel powder and POM powder and then granulating it into granules using a granulator, wherein the mass percentage of POM powder is 5% to 15%; preferably, the stainless steel powder is 440C stainless steel powder or 316 stainless steel powder, the mass percentage of POM powder is 8% ± 2%, and the particle size of the stainless steel powder and POM powder is less than 20 μm, such as 3 μm to 8 μm.

Claims

1. A cutting assembly for a shaver, characterized by: The invention relates to a razor net (10) comprising a moving cutter assembly, the razor net (10) comprising a razor net body (1) formed by powder metallurgy, the razor net body (1) having an inner cavity (2) with an opening facing downward, a solid center positioning column (3) being integrally formed on the bottom of the top of the razor net body (1), a plurality of shaving tracks (4) being arranged around the outer side of the center positioning column (3) on the bottom of the top of the razor net body (1), an inlet hole (5) being arranged on the top of the razor net body (1) and communicating with the shaving tracks (4) above and below, the moving cutter assembly comprising a moving cutter support (7) and a moving cutter (8) fixed on the moving cutter support (7), a plurality of moving cutter teeth (81) being arranged on the moving cutter (8) corresponding to the shaving tracks (4), a center positioning hole (71) being arranged on the top of the moving cutter support (7) and matching with the center positioning column (3), a transmission connecting part (72) being arranged on the bottom of the moving cutter support (7), a plurality of water passing holes (73) being arranged on the moving cutter support (7) and penetrating the moving cutter support (7) from top to bottom between the center positioning hole (71) and the innermost moving cutter teeth (81), the water passing holes (73) being arranged around the outer side of the center positioning hole (71).

2. A cutting assembly for a shaver according to claim 1, characterized in that: The outer diameter d of the center positioning column (3) is less than or equal to 2.0 mm, and the width w of the water passing hole (73) is greater than or equal to 1.0 mm.

3. A cutting assembly for a shaver according to claim 2, characterized in that: The outer diameter d of the center positioning column (3) satisfies 1.0 mm≤d≤1.5 mm, and the width w of the water passing hole (73) is greater than or equal to 1.3 mm.

4. A cutting assembly for a shaver according to claim 3, characterized in that: The water passing holes (73) are arranged in more than two and less than six in the circumferential direction, and the length a of the water passing hole (73) is greater than or equal to 1.3 mm, the transmission connecting part (72) is in a groove structure, and the water passing hole (73) is integrated with the transmission connecting part (72).

5. A cutting assembly for a shaver according to any one of claims 1 to 4, characterized in that: A thickened part (6) protruding downward is arranged on the bottom of the top of the razor net body (1), the thickened part (6) is above the center positioning hole (71), and the center positioning column (3) is connected to the thickened part (6).

6. A cutting assembly for a shaver according to claim 5, characterized in that: In the projection in the up-down direction, the thickened part (6) is in the area corresponding to the inscribed circle (C) surrounded by the plurality of water passing holes (73).

7. A shaving razor cartridge (10) characterized by: The invention relates to a razor net body (1) formed by powder metallurgy, the razor net body (1) having an inner cavity (2) with an opening facing downward, a solid center positioning column (3) being integrally formed on the bottom of the top of the razor net body (1), a plurality of shaving tracks (4) being arranged around the outer side of the center positioning column (3) on the bottom of the top of the razor net body (1), and an inlet hole (5) being arranged on the top of the razor net body (1) and communicating with the shaving tracks (4) above and below.

8. A shaving razor's head (10) according to claim 7, characterized in that: The outer diameter d of the center positioning column (3) is less than or equal to 2.0 mm.

9. A shaving razor's head (10) according to claim 8, characterized in that: The outer diameter d of the center positioning column (3) satisfies 1.0 mm≤d≤1.5 mm.

10. A shaving razor's head (10) according to any one of claims 7 to 9, characterized in that: A thickened part (6) protruding downward is arranged on the bottom of the top of the razor net body (1), and the center positioning column (3) is connected below the thickened part (6).

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