Tool bit assembly of rotary electric shaver

Abstract

The utility model discloses a rotary type electric shaver head assembly which comprises a movable blade, a shaver net assembly and a connecting piece, the connecting piece penetrates through the movable blade to be connected with the shaver net assembly, the shaver net assembly comprises an inner-ring shaver net and an outer-ring shaver net, a first beard inlet area and a second beard inlet area are distributed on the inner-ring shaver net at equal intervals, and the first beard inlet area and the second beard inlet area are connected with the outer-ring shaver net at equal intervals. A first beard inlet area is arranged on the outer ring cutter net, a third beard inlet area is arranged on the outer ring cutter net, the first beard inlet area and the third beard inlet area are multiple sets of straight grooves radiating outwards in the radial direction, the second beard inlet area comprises an annular beard inlet groove and a comb tooth groove, and the comb tooth groove and the annular beard inlet groove are communicated to form a rake-shaped groove radiating from inside to outside. According to the utility model, through the combination of the wider straight flute beard inlet and the comb tooth flute beard inlet, various types of beards can be more efficiently captured and cut, so that the shaving efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of shaver technology, and in particular to a rotary electric shaver head assembly. Background Technology

[0002] The shaver head assembly is a key component commonly used in electric shavers. It typically consists of multiple round or oval heads, each containing rotating blades. These heads can rotate independently or synchronously, cutting facial or body hair through the shearing action between the blades and an external, fixed foil. The user holds the shaver head close to the skin; the hair enters the blade area through the perforations of the foil and is then cut by the rapidly rotating blades. Because the heads can move freely, rotary electric shavers are particularly suitable for tackling facial curves and uneven areas.

[0003] Existing razor heads typically use a single shaving inlet design. The size and shape of the shaving inlet cannot effectively capture various types and lengths of beards, resulting in reduced shaving efficiency. Users need to shave multiple times to achieve the desired effect. Existing heads also cause friction and pulling on the skin during shaving, leading to skin irritation, especially for users with sensitive skin. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a rotary electric shaver head assembly, which, through the combination of a wider straight groove shaving inlet and a comb groove shaving inlet, can more efficiently capture and cut various types of beard, thereby improving shaving efficiency.

[0005] To solve the above-mentioned technical problems, this utility model provides a rotary electric shaver head assembly, including a moving blade, a foil assembly, and a connector. The connector passes through the moving blade and connects to the foil assembly. The foil assembly includes an inner foil and an outer foil. The inner foil has a first and a second hair-feeding area evenly distributed on it, and the outer foil has a third hair-feeding area. The first and third hair-feeding areas are multiple sets of straight grooves radiating outward in a radial direction. The second hair-feeding area includes an annular hair-feeding groove and a comb-tooth groove. The comb-tooth groove and the annular hair-feeding groove are connected to form a rake-shaped groove radiating outward from the inside.

[0006] The inner ring blade includes an outer connecting edge and an inner connecting edge. The outer connecting edge extends radially inward to form a plurality of comb strips. The comb tooth groove is formed between adjacent comb strips. The free end of the comb strip is arc-shaped. The annular shaving groove is formed between the free end of the comb strip and the inner connecting edge of the inner ring blade.

[0007] The second shaving area is formed by the left shaving side, the inner shaving side, the right shaving side, and the outer connecting side. The inner shaving side is located on the side of the inner ring blade net that is close to the inner connecting side and relatively far from the outer connecting side. The minimum distance from the free end of the comb to the inner shaving side is greater than the width of the comb tooth groove.

[0008] The first shaving area has a first transition section, the second shaving area has a second transition section, and the third shaving area has a third transition section. The cross-sections of the first transition section and the third transition section are both arc curves. The two ends of the first transition section gradually bend to connect with the two sides of the first shaving area. The first transition section transitions the end of the first shaving area to the inner connecting edge. The two ends of the second transition section gradually bend to connect with the two sides of the second shaving area. The second transition section transitions the inner shaving side to the inner connecting edge. The two ends of the third transition section gradually bend to connect with the two sides of the third shaving area. The third transition section transitions the end of the third shaving area to the side wall of the outer ring blade.

[0009] Each set of combs has 5 combs.

[0010] The cross-sections of the inner and outer ring cutter meshes are set as spherical arches.

[0011] The moving blade includes an inner cutting ring and an outer cutting ring. The inner cutting ring is provided with a first cutting foot, and the outer cutting ring is provided with a second cutting foot. The first cutting foot is bent upwards, and the second cutting foot is bent upwards and then bent outwards.

[0012] Both the first and second cutting feet are provided with cutting grooves.

[0013] The width of both the first and second cutting edges is 1.2 mm.

[0014] The thickness of the inner ring blade mesh is smaller than that of the outer ring blade mesh.

[0015] When this shaver is in use, the internal motor starts operating after the shaver is turned on, driving the inner and outer cutting rings in the moving blades to rotate at high speed. The user brings the shaver's foil assembly close to the skin, and the beard enters the shaving area through the first, second, and third entry zones. Each entry point is electrochemically processed to create rounded corners, allowing the beard to pass through these openings more smoothly into the shaving area. The comb-like groove design in the second entry zone makes it easier to capture and guide the beard to the moving blades. The beard first comes into contact with the third entry zone, where the outer foil is relatively thick, performing a rough cut. Then, the beard continues into the more refined first and second entry zones, where the inner foil is thinner, allowing for a finer cut, thus achieving a rough shave followed by a finer trim. During shaving, the spherical arch design of the foil assembly allows the shaver head to closely follow the facial contours, ensuring smoother head movement and greater skin contact. When shaving is complete, the user turns off the power, the motor stops working, and the moving blades also stop rotating.

[0016] The beneficial effects of this utility model are:

[0017] This invention combines a wider straight groove beard inlet with a comb-tooth groove beard inlet, which can more efficiently capture and cut various types of beard hairs, thereby improving shaving efficiency.

[0018] By using blades of varying thicknesses, the beard is initially cut by the thicker feed grooves, and then finely trimmed by the thinner feed grooves, providing a better shaving experience.

[0019] The blade edge of the shaving inlet is electrochemically processed to form a rounded transition and is polished, which reduces friction and pulling on the skin during shaving and improves shaving comfort. Attached Figure Description

[0020] Figure 1 This is an exploded view of this utility model.

[0021] Figure 2 This is a top view of the blade mesh assembly of this utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the moving blade of this utility model.

[0023] In the diagram: 1. Moving blade; 2. Blade assembly; 3. Connector; 4. Inner ring blade; 5. Outer ring blade; 6. First shaving area; 7. Second shaving area; 8. Third shaving area; 9. Comb; 10. Inner cutting ring; 11. Outer cutting ring; 12. First blade foot; 13. Second blade foot; 14. Cutting groove; 15. Annular shaving groove; 16. Comb groove; 17. First transition section; 18. Second transition section; 19. Third transition section; 20. Outer connecting edge; 21. Inner connecting edge; 22. Left shaving side; 23. Inner shaving side; 24. Right shaving side. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] according to Figure 1 and Figure 2 As shown, a rotary electric shaver head assembly of this utility model includes a moving blade 1, a foil assembly 2, and a connector 3. The connector 3 passes through the moving blade 1 and connects to the foil assembly 2. The foil assembly 2 includes an inner ring foil 4 and an outer ring foil 5. The inner ring foil 4 has multiple sets of first hair-feeding areas 6 and second hair-feeding areas 7. The outer ring foil 5 has a third hair-feeding area 8. The first hair-feeding areas 6 and the third hair-feeding areas 8 are both straight grooves. The second hair-feeding area 7 includes an annular hair-feeding groove 15 and a comb-tooth groove 16. The inner ring foil 4 includes an outer connecting... The outer connecting edge 20 and the inner connecting edge 21 extend radially inward to form a plurality of comb strips 9. The comb tooth groove 16 is formed between adjacent comb strips 9. The free end of the comb strip 9 is arc-shaped. The annular hair inlet groove 15 is formed between the free end of the comb strip 9 and the inner connecting edge 21 of the inner ring blade 4. The comb tooth groove 16 and the annular hair inlet groove 15 are connected to form a rake-shaped groove radiating from the inside to the outside. By combining the comb tooth groove 16 and the straight groove, the opening of the comb tooth groove 16 is larger, which makes it easier to enter the hair and increases the shaving efficiency. Each set of comb strips 9 is provided with 5.

[0026] The second beard-feeding area 7 is formed by the left shaving side 22, the inner shaving side 23, the right shaving side 24, and the outer connecting side 20. The inner shaving side 23 is located on the side of the inner ring blade 4 that is close to the inner connecting side 21 and relatively far away from the outer connecting side 20. The minimum distance from the free end of the comb 9 to the inner shaving side 23 is greater than the width of the comb tooth groove 16, ensuring that the free end of the comb 9 does not disturb the beard from entering the annular shaving groove.

[0027] The first beard-feeding area 6 has a first transition portion 17, the second beard-feeding area 7 has a second transition portion 18, and the third beard-feeding area 8 has a third transition portion 19. Both the first transition portion 17 and the third transition portion 19 have arc-shaped cross-sections. The first transition portion 17 gradually bends at both ends to connect with the sides of the first beard-feeding area 6, and the second transition portion 18 gradually bends at both ends to connect with the sides of the second beard-feeding area 7. The first transition portion 17 transitions the first beard-feeding area 6 to the inner connecting edge 21, and the second transition portion 18 transitions the end of the second beard-feeding area 7 to the inner connecting edge 21. The third transition portion 19 gradually bends at both ends to connect with the sides of the third beard-feeding area 8, and the third transition portion 19 transitions the end of the third beard-feeding area 8 to the side wall of the outer ring foil 5. This allows the beard to enter the shaving area more smoothly, resulting in higher comfort, better skin contact during movement, and a better shaving experience. The outer skin-contacting blade edge is also polished to form a rounded transition on the beard-feeding blade, providing a better skin feel. The inner ring foil 4 is thinner than the outer ring foil, so that when shaving the beard from the side, the working area is from thick to thin, forming a rough shave followed by a fine trim.

[0028] The inner and outer ring blades 4 and 5 are designed with spherical arched cross sections, which facilitates movement and close contact with the skin during shaving, thus improving shaving comfort.

[0029] according to Figure 3 As shown, the moving blade 1 includes an inner cutting ring 10 and an outer cutting ring 11. The inner cutting ring 10 is provided with a first cutting foot 12, and the outer cutting ring 11 is provided with a second cutting foot 13. The first cutting foot 12 is bent upwards, and the second cutting foot 13 is bent upwards and then outwards. Both the first cutting foot 12 and the second cutting foot 13 are provided with cutting grooves 14. The width of the first cutting foot 12 and the second cutting foot 13 is 1.2mm, which is significantly wider than similar products.

[0030] The blade assembly 2 has a central column, which passes through the moving blade 1 and connects to the connector 3, serving as a high-speed rotating positioning shaft.

[0031] When this utility model is in use, after the shaver is started, the internal motor begins to operate, driving the inner cutting ring 10 and outer cutting ring 11 in the moving blade 1 to rotate at high speed. The user brings the shaver's foil assembly 2 close to the skin, and the beard enters the shaving area through the first entry area 6, the second entry area 7, and the third entry area 8. Each entry point is electrochemically processed to form a rounded transition, allowing the beard to enter the shaving area more smoothly. The comb groove 16 design of the second entry area 7 makes it easier for the beard to be captured and guided to the moving blade 1. The beard first comes into contact with the third entry area 8. The outer foil 5 is relatively thick, performing a rough cut first. Then, the beard continues to be carried into the more refined first entry area 6 and second entry area 7. The inner foil 4 is thinner, enabling a more precise cut, thus achieving the effect of a rough shave followed by a fine trim. During shaving, the spherical arch design of the foil assembly 2 allows the shaving head to closely follow the contours of the face, ensuring smoother movement and greater skin contact. After shaving, the user turns off the power, the motor stops working, and the moving blade 1 also stops rotating.

[0032] The beneficial effects of this utility model are:

[0033] This invention combines a wider straight groove beard inlet with a comb-tooth groove beard inlet, which can more efficiently capture and cut various types of beard hairs, thereby improving shaving efficiency.

[0034] By using blades of varying thicknesses, the beard is initially cut by the thicker feed grooves, and then finely trimmed by the thinner feed grooves, providing a better shaving experience.

[0035] The blade edge of the shaving inlet is electrochemically processed to form a rounded transition and is polished, which reduces friction and pulling on the skin during shaving and improves shaving comfort.

[0036] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A rotary electric shaver head assembly, comprising a moving blade (1), a foil assembly (2), and a connector (3), wherein the connector (3) passes through the moving blade (1) and is connected to the foil assembly (2), and the foil assembly (2) comprises an inner foil (4) and an outer foil (5), characterized in that: The inner ring blade mesh (4) is provided with a first shaving region (6) and a second shaving region (7) at equal intervals. The outer ring blade mesh (5) is provided with a third shaving region (8). The first shaving region (6) and the third shaving region (8) are multiple sets of straight grooves that radiate outward along the radial direction. The second shaving region (7) includes an annular shaving groove (15) and a comb groove (16). The comb groove (16) and the annular shaving groove (15) are connected to form a rake-shaped groove that radiates outward from the inside.

2. The rotary electric shaver head assembly according to claim 1, characterized in that: The inner ring blade mesh (4) includes an outer connecting edge (20) and an inner connecting edge (21). The outer connecting edge (20) extends radially inward to form a plurality of comb strips (9). The comb tooth groove (16) is formed between adjacent comb strips (9). The free end of the comb strip (9) is arc-shaped. The annular shaving groove (15) is formed between the free end of the comb strip (9) and the inner connecting edge (21) of the inner ring blade mesh (4).

3. The rotary electric shaver head assembly according to claim 2, characterized in that: The second shaving area (7) is formed by the left shaving side (22), the inner shaving side (23), the right shaving side (24) and the outer connecting side (20). The inner shaving side (23) is located on the side of the inner ring blade (4) close to the inner connecting side (21) and relatively far from the outer connecting side (20). The minimum distance from the free end of the comb (9) to the inner shaving side (23) is greater than the width of the comb tooth groove (16).

4. The rotary electric shaver head assembly according to claim 3, characterized in that: The first shaving region (6) is provided with a first transition part (17), the second shaving region (7) is provided with a second transition part (18), and the third shaving region (8) is provided with a third transition part (19). The cross-sections of the first transition part (17) and the third transition part (19) are both arc curves. The two ends of the first transition part (17) gradually bend to connect with the two sides of the first shaving region (6). The first transition part (17) transitions the end of the first shaving region (6) to the inner connecting edge (21). The two ends of the second transition part (18) gradually bend to connect with the two sides of the second shaving region (7). The second transition part (18) transitions the inner shaving side edge (23) to the inner connecting edge (21). The two ends of the third transition part (19) gradually bend to connect with the two sides of the third shaving region (8). The third transition part (19) transitions the end of the third shaving region (8) to the side wall of the outer ring blade net (5).

5. A rotary electric shaver head assembly according to claim 2, characterized in that: Each set of combs (9) has 5 combs.

6. The rotary electric shaver head assembly according to claim 1, characterized in that: The cross-sections of the inner ring knife mesh (4) and the outer ring knife mesh (5) are set as spherical arches.

7. The rotary electric shaver head assembly according to claim 1, characterized in that: The moving blade (1) includes an inner cutting ring (10) and an outer cutting ring (11). The inner cutting ring (10) is provided with a first cutting foot (12), and the outer cutting ring (11) is provided with a second cutting foot (13). The first cutting foot (12) is bent upwards, and the second cutting foot (13) is bent upwards and then bent outwards.

8. A rotary electric shaver head assembly according to claim 7, characterized in that: Both the first cutting edge (12) and the second cutting edge (13) are provided with cutting grooves (14).

9. A rotary electric shaver head assembly according to claim 7, characterized in that: The width of the first cutting edge (12) and the second cutting edge (13) is 1.2 mm.

10. A rotary electric shaver head assembly according to claim 1, characterized in that: The thickness of the inner ring blade mesh (4) is smaller than that of the outer ring blade mesh (5).

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