Foil of electric shaver and outer blade assembly of electric shaver

Abstract

A foil of an electric rotary shaver. A plurality of balls protruding from a skin contact surface and capable of rolling are provided on a foil top. An outer blade assembly for an electric rotary shaver. A plurality of balls protruding from corresponding skin contact surfaces and capable of rolling are provided on a foil top and / or a frame. An outer blade assembly for an electric foil shaver, provided with a plurality of rows of balls. A plurality of balls are provided in each row and are arranged along the length direction of the outer blade assembly. By means of the balls rolling on the skin contact surfaces, the skinfeel can be improved, the stimulation generated by shaving can be weakened, and the comfort of shaving can be improved.

Description

The foil and outer blade assembly of an electric shaver [Technical Field]

[0001] This invention relates to the field of razors, and more specifically to a blade foil for an electric razor used in a rotating razor. The invention also relates to an outer blade assembly for an electric razor used in a rotating razor, and further to an outer blade assembly for an electric razor used in a reciprocating razor. [Background Technology]

[0002] Electric shavers are mainly divided into two categories: rotary shavers and reciprocating shavers. Generally, the cutting component of an electric shaver includes an outer blade and a moving blade. The moving blade moves relative to the outer blade to cut the hair that enters through the pores. In a rotary shaver, the cutting component typically consists of a foil and a rotating moving blade located inside the foil. The foil is usually used to contact and move on the skin to shave hair in different areas of the beard or other body parts. The foil has pores for entering the hair. When the moving blade rotates, the cutting edge on the moving blade engages with the inner edge of the pore to cut the hair. In a reciprocating shaver, the cutting component typically consists of an outer blade and a moving blade that reciprocates along its length. The outer blade has cutting holes and / or fixed cutting teeth. When hair enters the cutting hole and / or fixed cutting teeth, the cutting edge on the moving blade engages with the inner edge of the cutting hole or the fixed cutting teeth to cut the hair. Regardless of whether it's a rotary shaver or a reciprocating shaver, in actual use, it's inevitable that skin irritation can occur during shaving or hair cutting, and the feel and comfort of shaving need improvement.

[0003] This invention was made based on this situation. [Summary of the Invention]

[0004] The technical problem to be solved by the present invention is to provide a blade foil for an electric shaver, which is used for rotating shavers. It has a simple structure and improves skin feel by using ball bearings, weakening the irritation caused by shaving and improving shaving comfort.

[0005] To solve the above-mentioned technical problems, the present invention provides a blade net for an electric shaver, used for rotating shavers, comprising a blade net body, the blade net body having a net top, the net top having a skin contact surface for adhering to the skin during operation, and the net top having a plurality of ball bearings protruding from the skin contact surface and capable of rolling.

[0006] In the blade foil of an electric shaver as described above, the height h of the ball protruding from the skin contact surface is less than the ball diameter r, and h ≤ 0.7r, 0.05mm ≤ h ≤ 0.5mm.

[0007] The blade of an electric shaver as described above, wherein the ball bearing is a steel ball or a bead made of glass or ceramic material.

[0008] As described above, the blade of an electric shaver has an annular shaving area on top, with hair inlet holes on the shaving area, and the ball bearing is located outside the shaving area.

[0009] As described above, the blade of an electric shaver has an annular shaving track on top, the shaving area is disposed on the shaving track, and a plurality of ball bearings are arranged circumferentially on the inner side and / or the outer side of the shaving track.

[0010] As described above, the blade mesh of an electric shaver has two or more coaxially arranged shaving tracks on the top of the mesh, ball bearings are provided between two adjacent shaving tracks, and the circle formed by the plurality of ball bearings is coaxial with the shaving tracks.

[0011] The blade of an electric shaver as described above has a continuous skin contact surface between two adjacent shaving tracks on the inner and outer sides of the ball bearing.

[0012] As described above, the foil of an electric shaver has a plurality of openings on the top of the foil for ball bearings to protrude from the skin contact surface. The ball bearings are larger than the openings and are prevented from falling out of the openings. The top of the foil has a limiting structure that confines the ball bearings to the position of the openings.

[0013] As described above, the foil of an electric shaver has a ball groove located below the exposed opening on the top of the foil, which cooperates with a ball bearing, and the limiting structure confines the ball bearing in the ball groove.

[0014] In the blade foil of an electric shaver as described above, a connecting frame is provided between the plurality of balls for connecting the plurality of balls together, and each ball can roll on the connecting frame.

[0015] As described above, the blade mesh of an electric shaver has a mounting groove located below the ball bearing grooves on the top of the mesh, which connects multiple ball bearing grooves together. The limiting structure is installed in the mounting groove, and the side wall of the mounting groove has several drain outlets.

[0016] The blade mesh of an electric shaver as described above, the defining structure includes a support plate fixed on top of the mesh for supporting balls from below.

[0017] The blade mesh of an electric shaver as described above is made of powder metallurgy, and the exposed opening and ball bearing groove are formed by injection molding.

[0018] As described above, the foil of an electric shaver includes an extension on the top of the foil extending to the outside of the foil body. The foil body is provided with a floating connection structure for floating connection with the shaver head holder. The top of the extension is provided with a skin contact surface, and a plurality of ball bearings protrude from the skin contact surface of the extension.

[0019] As described above, the foil of an electric shaver has a recessed groove on the top of the foil that extends inward from top to bottom. A plurality of balls are mounted on a retaining assembly and are able to roll on the retaining assembly. The retaining assembly is fixed in the recessed groove and has a skin contact surface.

[0020] As described above, the foil of an electric shaver includes an upper retainer and a lower retainer that define a ball bearing between them, and the upper retainer has an opening for the ball bearing to protrude.

[0021] The second technical problem to be solved by the present invention is to provide an outer blade assembly for an electric shaver, which is used to rotate the shaver. It has a simple structure and improves skin feel by using a ball bearing, weakening the irritation generated during shaving and improving shaving comfort.

[0022] To solve the above-mentioned technical problems, the present invention provides an outer blade assembly for an electric shaver, used for rotating the shaver, including a blade net and a blade holder. The blade net is mounted on the blade holder, and the blade net includes a blade net body with a net top. The net top and the blade holder each have a skin contact surface for adhering to the skin during operation. The net top and / or the blade holder are provided with a plurality of rolling balls protruding from the corresponding skin contact surfaces and capable of rolling. The plurality of rolling balls are arranged in a circumferential direction.

[0023] In the outer blade assembly of an electric shaver as described above, the height h of the ball protruding from the skin contact surface and the ball diameter r of the ball satisfy the condition 0.05mm≤h≤0.7r.

[0024] The third technical problem to be solved by the present invention is to provide an outer blade assembly for an electric shaver, which is used in a reciprocating shaver. It has a simple structure and improves skin feel by using a ball bearing, weakening the irritation generated during shaving and improving shaving comfort.

[0025] To solve the above-mentioned technical problems, the present invention provides an outer blade assembly for an electric shaver, used in a reciprocating shaver, comprising:

[0026] The outer blade has cutting teeth and / or cutting holes along its length.

[0027] External tool holder, used to mount external tools.

[0028] The skin contact surface is used to adhere to the skin during shaving.

[0029] The ball bearings are arranged in several rows, with multiple ball bearings in each row, along the length of the outer blade. The ball bearings protrude from the skin contact surface and are capable of rolling.

[0030] As described above, the outer blade assembly of an electric shaver has a skin contact surface on the outer side of the cutting area corresponding to the cutting teeth and / or cutting holes, and a ball bearing is provided on the outer side of the cutting area corresponding to the cutting teeth and / or cutting holes. The outer blade has multiple protrusions on the outer side of the cutting area corresponding to the cutting teeth and / or cutting holes, allowing the ball bearing to protrude from the skin contact surface of the outer blade. The ball bearing is larger than the protrusions and prevents the ball bearing from falling out of the protrusions. The bottom of the outer blade has a limiting structure that confines the ball bearing to the position of the protrusions.

[0031] As described above, in an electric shaver outer blade assembly, the outer blade holder portion protrudes from the outer side of the outer blade and has a skin contact surface, and the skin contact surface of the outer blade holder has a plurality of ball bearings protruding from the skin contact surface.

[0032] In the outer blade assembly of an electric shaver as described above, the height h of the ball protruding from the skin contact surface and the ball diameter r of the ball satisfy the condition 0.05mm≤h≤0.7r≤1mm.

[0033] Compared with the prior art, the present invention has the following advantages:

[0034] 1. The present invention relates to a rotating electric shaver with a foil having multiple ball bearings protruding from the skin contact surface and capable of rolling on the top of the foil. During shaving, the top of the foil presses against the skin, the skin contact surface moves against the skin, and the ball bearings protrude from the skin contact surface, with their protruding parts also pressing against the skin. The movement of the ball bearings on the skin and the rolling caused by friction on the skin can improve the skin feel, reduce the irritation caused by shaving, and improve the comfort of shaving.

[0035] 2. The blade mesh of the electric shaver used in this invention for rotary shavers is equipped with ball bearings. The ball bearings are spherical and can roll in any direction at 360°. Even if the rotary shaver is held and moved in different directions on the skin without changing the angle of the shaver, the ball bearings can still roll in the corresponding direction, avoiding the limitation of the direction of movement of the rotary shaver and better matching the non-directional movement of the rotary shaver.

[0036] 3. In the electric shaver blade of the present invention, the height h of the ball protruding from the skin contact surface is less than the ball diameter r, especially h ≤ 0.7r, and 0.05mm ≤ h ≤ 0.5mm. This can prevent the ball from protruding too high, which would affect the stability of the ball assembly, and prevent the skin from being lifted too high, which would result in poor skin contact in the shaving area and reduce shaving efficiency and cleanliness. Moreover, a ball that protrudes too high will also affect the skin feel. On the other hand, it avoids the problem that if the ball protrudes too small, it will be difficult to drive the ball to roll due to friction with the skin.

[0037] 4. The blade of the electric shaver of the present invention is used for a rotary shaver. Multiple ball bearings are arranged circumferentially on the inner and / or outer sides of the shaving track. Since the skin irritation during shaving is mainly caused by the interaction between the rotating motion of the blade and the edge of the hair follicle, the skin irritation area is distributed on the annular shaving track. The multiple ball bearings are evenly or nearly evenly distributed on the inner and / or outer sides of the shaving track in a circumferential direction. The uniform distribution of the ball bearings on the blade is beneficial to improving skin feel. Moreover, the ball bearings are closer to the area where skin irritation occurs, so as to better reduce the irritation caused by shaving.

[0038] 5. The blade of the electric shaver of the present invention for a rotary shaver has a continuous inner and outer skin contact surface between two adjacent shaving tracks on the inner and outer sides of the ball bearing. The skin contact surfaces corresponding to the two shaving tracks are continuous. In addition, the ball bearing protrudes in the middle of the skin contact surface of the two shaving tracks, which can better improve the skin feel and comfort.

[0039] 6. The blade of the electric shaver used in this invention for rotary shavers is made of powder metallurgy, and the exposed opening and ball bearing groove are formed by injection molding through a mold, which is simple in production process.

[0040] 7. The blade foil of the electric shaver used in this invention for rotary shavers is made of powder metallurgy. The top of the foil includes an extension extending to the outside of the foil body. The foil body has a floating connection structure. Multiple ball bearings protrude from the skin contact surface of the extension, improving shaving feel and comfort. The extension, in conjunction with the floating connection structure, can be directly mounted to the shaver head holder, avoiding the need for a separate shaver head holder to float the foil, thus saving on components.

[0041] 8. The outer blade assembly of the electric shaver for rotary shavers of the present invention has multiple protruding and rolling balls on the top of the mesh and / or the blade holder, which improve the skin feel during shaving, reduce the irritation caused by shaving, and improve the comfort of shaving.

[0042] 9. The outer blade assembly of the electric shaver for reciprocating shavers of the present invention has several rows of ball bearings, each row including multiple ball bearings that protrude on the skin contact surface and can roll. The protruding ball bearings improve the skin feel during shaving with the reciprocating shaver, reduce the irritation caused by shaving, and improve the comfort of shaving. [Attached Image Description]

[0043] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0044] Figure 1 is a schematic diagram of the blade structure of the electric shaver for rotary shavers according to the present invention;

[0045] Figure 2 is a top view of the blade of the electric shaver for rotary shavers according to the present invention, and a cross-sectional view along the AA direction in Figure 1.

[0046] Figure 3 is an exploded view of the blade of the electric shaver used in the rotary shaver of the present invention;

[0047] Figure 4 is a cross-sectional view of the blade of the electric shaver for rotary shavers of the present invention along the AA direction in Figure 2.

[0048] Figure 5 is an enlarged view of Figure 4;

[0049] Figure 6 is a structural schematic diagram of an embodiment of the present invention in which multiple balls are connected together by a connecting frame;

[0050] Figure 7 is a cross-sectional view of the embodiment of Figure 6;

[0051] Figure 8 is a schematic diagram of a ball bearing installation structure;

[0052] Figure 9 is a top view of an embodiment of the present invention in which a recessed groove is provided on the top of the mesh for mounting balls;

[0053] Figure 10 is a cross-sectional view of the embodiment in Figure 9 at BB;

[0054] Figure 11-12 is a schematic diagram of the structure with an extension on the top of the mesh extending to the outside of the knife mesh body;

[0055] Figure 13 is a schematic diagram of the head of an electric shaver having the outer blade assembly of the present invention for a rotary shaver;

[0056] Figure 14 is a schematic diagram of the structure of an embodiment of the outer blade assembly of the electric shaver for reciprocating shavers of the present invention;

[0057] Figure 15 is a structural schematic diagram of an embodiment of the outer blade in the outer blade assembly of the reciprocating razor of the present invention;

[0058] Figure 16 is a cross-sectional view of the outer blade in Figure 15 along the width direction;

[0059] Figure 17 is a cross-sectional view in the width direction of another embodiment of the outer blade assembly of the electric shaver for reciprocating shavers according to the present invention.

Detailed Implementation Methods

[0060] The present invention will now be further described with reference to the accompanying drawings:

[0061] As shown in Figures 1 to 12, an electric shaver's foil 100 is used for rotating the shaver. It includes a foil body 1, which has a foil top 10. The foil top 10 has a skin contact surface 11 that adheres to the skin during operation. The foil top 10 has multiple ball bearings 2 that protrude from the skin contact surface 11 and can roll. During shaving, the foil top 10 presses against the skin, the skin contact surface 11 moves against the skin, and the ball bearings 2 protrude from the skin contact surface 11, their protruding portions also pressing against the skin. The smooth movement of the ball bearings on the skin and the rolling motion caused by friction improve skin feel, reduce irritation during shaving, and enhance shaving comfort.

[0062] The rotary shaver features ball bearings on its foil. These ball bearings are spherical and can roll in any direction (360°). Even when holding the rotary shaver and moving it in different directions on the skin without rotating the shaver, the ball bearings will still roll in the corresponding direction. This avoids being limited by the direction of movement of the rotary shaver and allows for better compatibility with the non-directional movement of the rotary shaver.

[0063] Preferably, the height h of the ball bearing 2 protruding from the skin contact surface 11 is less than the ball diameter r of the ball bearing 2. Preferably, h ≤ 0.7r, and 0.05mm ≤ h ≤ 0.5mm. This can prevent the ball bearing from protruding too high, which would affect the stability of the ball bearing assembly, and prevent the skin from being lifted too high, which would result in poor contact between the skin contact surface 11 and the skin in the shaving area 12, thus reducing the shaving efficiency and cleanliness. Moreover, a ball bearing that protrudes too high will also affect the skin feel. On the other hand, it can prevent the ball bearing from being too small and having difficulty rolling due to friction with the skin.

[0064] Preferably, the diameter of the ball bearing is 0.5mm≤2r≤1.5mm. If the ball bearing is too large, it will occupy too much volume; if the ball bearing is too small, it will be difficult to produce a skin-feeling sensation.

[0065] Preferably, the ball 2 is a steel ball or a ball made of glass or ceramic material, and ceramic balls have good antibacterial properties.

[0066] The top of the mesh 10 has an annular shaving area 12, and the shaving area 12 has hair inlet 13. The ball bearing 2 is located outside the shaving area 12. The shaving area 12 corresponds to the area covered by the rotation path of the cutting teeth 100 on the moving blade when they rotate, as shown in Figure 2. The moving blade has two cutting teeth 100. The area covered by the rotation path of the outer cutting teeth 100 when they rotate is an annular area enclosed by circles s1 and s2, and the area covered by the rotation path of the inner cutting teeth 100 when they rotate is an annular area enclosed by circles s3 and s4. The ball bearing 2 is located outside the shaving area 12 to avoid contact with the cutting teeth 100 on the moving blade and causing collision.

[0067] Preferably, the top of the net 10 is provided with an annular shaving track 14, and the shaving area 12 is disposed on the shaving track 14. The shaving track 14 is used for the cutting teeth 100 of the moving blade to rotate within it. A plurality of the rollers 2 are arranged circumferentially on the inner and / or outer sides of the shaving track 14. Since the skin irritation during shaving is mainly caused by the interaction between the rotating motion of the moving blade and the edge of the hair follicle, the skin irritation area is distributed on the annular shaving track. The plurality of rollers 2 are evenly or nearly evenly distributed circumferentially on the inner and / or outer sides of the shaving track 14. The uniform distribution of the rollers on the blade net is beneficial to improving the skin feel, and the rollers are closer to the place where skin irritation occurs, so as to better reduce the irritation caused by shaving.

[0068] Preferably, as shown in the embodiments in Figures 1-10, the top of the net 10 is provided with two or more coaxially arranged shaving tracks 14, with ball bearings 2 positioned between adjacent shaving tracks 14, and the circle formed by the plurality of ball bearings 2 being coaxial with the shaving track 14 at angle OA. Having two or more shaving tracks 14 increases the shaving area and improves shaving efficiency, while the ball bearings 2 positioned between adjacent shaving tracks 14 result in a compact structure that optimizes spatial layout.

[0069] Preferably, as shown in the embodiments of Figures 4, 5, 7, and 8, there is a continuous skin contact surface 11 between two adjacent shaving tracks 14 on the inner and outer sides of the ball 2. The skin contact surfaces 11 corresponding to the two shaving tracks 14 are continuous. In addition, the ball protruding on the middle of the skin contact surfaces 11 of the two shaving tracks 14 can better improve the skin feel and comfort.

[0070] As shown in the embodiments in Figures 1 to 8, the top of the mesh 10 is provided with a plurality of exposure openings 15 for the ball bearing 2 to be exposed from the skin contact surface 11. The ball bearing 2 is larger than the exposure openings 15 and prevents the ball bearing 2 from falling out of the exposure openings 15. The top of the mesh 10 is provided with a limiting structure that limits the ball bearing 2 to the position of the exposure openings 15.

[0071] Preferably, the top of the mesh 10 has a ball groove 16 below the exposed opening 15 to cooperate with the ball 2. The limiting structure confines the ball 2 in the ball groove 16, which is simple in structure. Preferably, the ball groove 16 is a spherical groove.

[0072] As shown in the embodiment of Figures 3-5, after the balls 2 are individually inserted into the ball grooves 16, the balls are then confined within the ball grooves 16 by a support plate 4 mounted below the balls 2. Regarding the confining structure, the confining structure includes a support plate 4 fixed to the top of the mesh 10 for supporting the balls 2 from below. The support plate 4 can be fixed to the top of the mesh 10 by welding or bonding.

[0073] Further, as shown in the embodiment of Figures 6-7, a connecting frame 3 is provided between the plurality of balls 2 to connect the plurality of balls 2 together, and each ball 2 can roll on the connecting frame 3. The structure is simple. During installation, the connecting frame 3 containing the balls 2 is simply installed on the top of the net 10 with the balls 2 aligned with the ball grooves 16. Production and assembly are convenient. Regarding the limiting structure, the limiting structure can be a support plate 4 supporting the balls 2 from below. The support plate 4 can be fixed to the top of the net 10 by welding or bonding; or, the connecting frame 3 can also be used as the limiting structure, and the connecting frame 3 can be fixed to the top of the net 10 by welding or bonding.

[0074] Preferably, the top of the net 10 is provided with an installation groove 17 below the ball groove 16, which connects multiple ball grooves 16 together. The support plate 4 and / or the connecting frame 3 are installed in the installation groove 17. The side wall of the installation groove 17 is provided with a number of drain outlets 18 for draining water from the ball grooves 16 and the installation groove 17.

[0075] Preferably, the blade body 1 and the top 10 are manufactured by powder metallurgy, and the exposed opening 15 and the ball bearing groove 16 are formed by injection molding, resulting in a simple manufacturing process. For the powder metallurgy manufacturing process of the blade, refer to the technical solution disclosed in Chinese Patent Publication No. CN118559761A, entitled "Rotary Shaver Blade and its Powder Metallurgy Manufacturing Process".

[0076] As shown in the embodiment of Figures 11-12, the top of the mesh 10 includes an extension 101 extending to the outside of the blade mesh body 1. The blade mesh body 1 is provided with a floating connection structure for floating connection with the blade holder 8. The top of the extension 101 is provided with a skin contact surface 11, and a plurality of ball bearings 2 protrude from the skin contact surface 11 of the extension 101. Preferably, the floating connection structure includes a shaft hole 71 laterally disposed on the blade mesh body 1 for rotatably connecting to the blade holder 8 to achieve floating on the blade holder 8. The extension 101, in conjunction with the floating connection structure, can be directly installed on the blade holder 8, avoiding the structure in the prior art that requires a separate blade holder to float the blade mesh on the blade holder 8, thus saving parts.

[0077] As shown in the embodiment of Figures 9-10, the top of the mesh 10 has a recessed groove 19 that curves inward from top to bottom. Multiple balls 2 are mounted on a retaining assembly, allowing them to roll on the assembly. The retaining assembly is fixed within the recessed groove 19 and has a skin contact surface 11. Preferably, the skin contact surface 11 on the retaining assembly is substantially flush with the skin contact surface 11 on the shaving track 14, eliminating any noticeable step difference between them and improving skin comfort.

[0078] Preferably, as shown in the embodiment of FIG10, the retaining component includes an upper retaining member 5 and a lower retaining member 6. The upper surface of the upper retaining member 5 is a skin contact surface 11. The upper retaining member 5 and the lower retaining member 6 confine the ball 2 between them. The upper retaining member 5 is provided with an exposure opening 15 for the ball 2 to be exposed. The structure is simple, and the ball can be installed in the lower groove 19 as a whole with the retaining component. The production is simple and convenient. The retaining component can be installed and fixed by means of bonding, welding, or snap-fit.

[0079] Figure 13 shows an outer blade assembly for an electric shaver, used for rotating the shaver. It includes a foil and a shaver holder 7. The foil is mounted on the holder 7 and includes a foil body 1. The foil body 1 has a foil top 10. Both the foil top 10 and the holder 7 have skin contact surfaces 11 for contacting the skin during operation. The foil top 10 has multiple ball bearings 2 protruding from and rolling on the corresponding skin contact surfaces 11. Alternatively, the holder 7 may have multiple ball bearings 2 protruding from and rolling on the corresponding skin contact surfaces 11, or both the foil top 10 and the holder 7 may have multiple ball bearings 2 protruding from and rolling on the corresponding skin contact surfaces 11. These ball bearings 2 are arranged circumferentially. The protruding ball bearings 2 improve the skin feel during shaving, reduce irritation, and enhance shaving comfort. When the foil top has ball bearings, the foil structure is similar to the foil 100 of the electric shaver described above. When the blade holder 7 is equipped with a ball bearing, the ball bearing is installed in the same way as the ball bearing installation method of the blade net 100 of the electric shaver described above. That is, the ball bearing is installed on the blade holder 7 through the protrusion, the ball bearing groove and the limiting structure, or the ball bearing is installed on the blade holder 7 by setting the lower groove 19 and cooperating with the retaining component.

[0080] Preferably, the height h of the ball bearing 2 protruding from the skin contact surface 11 of the blade holder 7 and the ball diameter r of the ball bearing 2 satisfy the condition 0.05mm≤h≤0.7r. This can prevent the ball bearing from protruding too high from affecting the stability of the ball bearing assembly and from affecting the skin feel. In addition, it can prevent the ball bearing from being too small to cause friction with the skin and make it difficult to drive the ball bearing to roll.

[0081] Figures 14-17 show an outer blade assembly for an electric shaver, used in a reciprocating shaver, including...

[0082] The outer blade 1a is provided with cutting teeth 1a1 and / or cutting holes 1a2 along its length direction. The cutting teeth 1a1 and / or cutting holes 1a2 are used to cooperate with a moving blade that reciprocates in the length direction to cut hair.

[0083] The outer tool holder 7a is used to mount the outer tool 1a.

[0084] Skin contact surface 11, used to adhere to the skin during shaving.

[0085] The ball bearing 2 has several rows, with multiple balls bearing 2 in each row arranged along the length of the outer blade 1a. The ball bearing 2 protrudes from the skin contact surface 11 and can roll.

[0086] The raised ball bearing 2 improves the skin feel during shaving with a reciprocating shaver, reduces irritation, and enhances shaving comfort.

[0087] As shown in the embodiment of Figures 15-17, the outer blade 1a has a skin contact surface 11 outside the cutting area 12a corresponding to the cutting teeth 1a1 and / or cutting holes 1a2, and a ball 2 is provided outside the cutting area 12a corresponding to the cutting teeth 1a1 and / or cutting holes 1a2. The outer blade 1a has a plurality of exposure openings 15 outside the cutting area 12a corresponding to the cutting teeth 1a1 and / or cutting holes 1a2, which allow the ball 2 to be exposed from the skin contact surface 11 of the outer blade 1a. The ball 2 is larger than the exposure opening 15 and prevents the ball 2 from falling out of the exposure opening 15. The bottom of the outer blade 1a has a limiting structure that limits the ball 2 to the position of the exposure opening 15.

[0088] In the embodiment shown in Figures 15-16, the outer blade 1a has a ball bearing groove 16, and the ball bearing 2 is installed in the ball bearing groove 16. Preferably, the limiting structure is a support plate 4 fixed to the bottom of the outer blade 1a to support the ball bearing 2 from below. Of course, multiple balls can also be installed on a strip-shaped connecting frame and then the connecting frame is installed on the outer blade 1a.

[0089] Alternatively, as shown in the embodiment of Figure 17, the outer blade holder 7a is fixed below the outer blade 1a, and the outer blade holder 7a is provided with a downwardly recessed ball groove 16 below the exposed opening 15. The limiting structure is composed of the ball groove 16, which limits the ball 2 to the exposed opening 15.

[0090] As shown in the embodiment of Figure 14, the outer blade holder 7a is partially exposed on the outside of the outer blade 1a and has a skin contact surface 11. The skin contact surface 11 of the outer blade holder 7a has a plurality of ball bearings 2 protruding from the skin contact surface 11.

[0091] Regarding the installation of the ball bearing 2, multiple exposure openings 15 can be provided on the outer blade holder 7a for the ball bearing 2 to protrude from the skin contact surface 11. The ball bearing 2 is larger than the exposure opening 15 and prevents the ball bearing 2 from coming out of the exposure opening 15. The bottom of the outer blade holder 7a is provided with a limiting structure that limits the ball bearing 2 to the position of the exposure opening 15.

[0092] Furthermore, the outer tool holder 7a is provided with a ball groove, and the ball is installed in the ball groove; the limiting structure can be a support plate fixed on the outer tool holder to support the ball from below. Of course, multiple balls can also be installed on a strip-shaped connecting frame and then the connecting frame is installed on the outer tool holder.

[0093] Preferably, the height h of the ball bearing 2 protruding from the skin contact surface 11 and the ball diameter r of the ball bearing 2 satisfy the condition 0.05mm≤h≤0.7r≤1mm. When the outer blade 1a is provided with the ball bearing 2, it is preferable that the height h of the ball bearing 2 protruding from the skin contact surface 11 of the outer blade 1a is ≤0.5mm. This serves two purposes: firstly, it can prevent the ball bearing from protruding too high, which would affect the stability of the ball bearing assembly, and secondly, it can prevent the skin from being lifted too high, which would result in poor contact between the skin contact surface 11 and the skin in the shaving area 12, thus reducing the shaving efficiency and cleanliness. Moreover, a ball bearing that protrudes too high will also affect the skin feel. Furthermore, it can prevent the ball bearing from being too large or too small, which would make it difficult to rotate due to friction with the skin.

Claims

1. A cutter net (100) of an electric shaver for a rotary shaver, comprising a cutter net body (1) provided with a net top (10) having a skin contact surface (11) for being applied against the skin during operation, characterized in that: The top of the net (10) is provided with a plurality of ball bearings (2) that protrude from the skin contact surface (11) and can roll.

2. A shaving head (100) for an electric shaver according to claim 1, characterized in that: The height h of the ball (2) protruding from the skin contact surface (11) is less than the ball diameter r of the ball (2), and h ≤ 0.7r, 0.05mm ≤ h ≤ 0.5mm.

3. The blade net (100) of an electric shaver according to claim 1, characterized in that: The ball (2) is a steel ball or a bead made of glass or ceramic material.

4. The blade net (100) of an electric shaver according to claim 1, characterized in that: The top of the net (10) is provided with an annular shaving area (12), the shaving area (12) is provided with hair inlet holes (13), and the ball (2) is located outside the shaving area (12).

5. The blade net (100) of an electric shaver according to claim 4, characterized in that: The top of the net (10) is provided with an annular shaving track (14), the shaving area (12) is set on the shaving track (14), and a plurality of the balls (2) are arranged in a circumferential direction on the inner side and / or the outer side of the shaving track (14).

6. The blade net (100) of an electric shaver according to claim 5, characterized in that: The top of the net (10) is provided with two or more coaxial shaving tracks (14), and ball bearings (2) are provided between two adjacent shaving tracks (14), and the circle formed by the multiple ball bearings (2) is coaxial with the shaving track (14) (OA).

7. The blade net (100) of an electric shaver according to claim 6, characterized in that: There is a continuous skin contact surface (11) between two adjacent shaving tracks (14) on the inner and outer sides of the ball (2).

8. The blade foil (100) of an electric shaver according to claim 1, characterized in that: The top of the mesh (10) is provided with a plurality of openings (15) for the ball (2) to be exposed from the skin contact surface (11). The ball (2) is larger than the opening (15) and prevents the ball (2) from coming out of the opening (15). The top of the mesh (10) is provided with a limiting structure that limits the ball (2) to the position of the opening (15).

9. The blade net (100) of an electric shaver according to claim 8, characterized in that: The top of the net (10) is provided with a ball groove (16) below the exposed opening (15) to cooperate with the ball (2), and the limiting structure limits the ball (2) in the ball groove (16).

10. The blade foil (100) of an electric shaver according to claim 9, characterized in that: A connecting frame (3) is provided between the plurality of said balls (2) for connecting the plurality of balls (2) together, and each ball (2) can roll on the connecting frame (3).

11. The blade foil (100) of an electric shaver according to claim 8, characterized in that: The top of the mesh (10) is provided with an installation groove (17) below the ball groove (16) to connect multiple ball grooves (16) together. The limiting structure is installed in the installation groove (17), and the side wall of the installation groove (17) is provided with a number of drain outlets (18).

12. The blade net (100) of an electric shaver according to claim 9, characterized in that: The defined structure includes a support plate (4) fixed on the top of the net (10) for supporting the balls (2) from below.

13. The blade foil (100) of an electric shaver according to claim 9, characterized in that: The blade mesh body (1) and mesh top (10) are made of powder metallurgy, and the exposed opening (15) and ball groove (16) are formed by injection molding.

14. The blade foil (100) of an electric shaver according to claim 13, characterized in that: The top of the net (10) includes an extension (101) extending to the outside of the blade net body (1). The blade net body (1) is provided with a floating connection structure for floating connection with the blade head holder (8). The top of the extension (101) is provided with a skin contact surface (11). A plurality of the ball bearings (2) protrude from the skin contact surface (11) of the extension (101).

15. The blade foil (100) of an electric shaver according to claim 1, characterized in that: The top of the net (10) is provided with a recessed groove (19) that is concave from top to bottom. A plurality of the balls (2) are mounted on the retaining assembly and the balls (2) can roll on the retaining assembly. The retaining assembly is fixed in the recessed groove (19) and has a skin contact surface (11).

16. The blade foil (100) of an electric shaver according to claim 15, characterized in that: The retaining assembly includes an upper retainer (5) and a lower retainer (6), which define the ball (2) between them. The upper retainer (5) has an exposure opening (15) for the ball (2) to be exposed.

17. An outer blade assembly for an electric shaver, used for rotating the shaver, comprising a foil and a shaver holder (7), the foil being mounted on the shaver holder (7), the foil comprising a foil body (1), the foil body (1) having a foil top, the foil top (10) and the shaver holder (7) respectively having skin contact surfaces (11) for contacting the skin during operation, characterized in that: The top of the net (10) and / or the knife holder (7) are provided with a plurality of ball bearings (2) that protrude from the corresponding skin contact surface (11) and can roll, and the plurality of ball bearings (2) are arranged in a circumferential direction.

18. An outer blade assembly for an electric shaver, used in a reciprocating shaver, characterized in that: include An outer blade (1a) is provided with cutting teeth (1a1) and / or cutting holes (1a2) along its length. An outer tool holder (7a) is used to mount an outer tool (1a). Skin contact surface (11), used to adhere to the skin during shaving. The ball (2) has several rows, with multiple balls (2) in each row arranged along the length of the outer blade (1a). The ball (2) protrudes from the skin contact surface (11) and can roll.

19. The outer blade assembly of an electric shaver according to claim 18, characterized in that: The outer blade (1a) has a skin contact surface (11) outside the cutting area (12a) corresponding to the cutting teeth (1a1) and / or cutting holes (1a2), and a ball (2) is provided outside the cutting area (12a) corresponding to the cutting teeth (1a1) and / or cutting holes (1a2). The outer blade (1a) has a plurality of exposure openings (15) outside the cutting area (12a) corresponding to the cutting teeth (1a1) and / or cutting holes (1a2) for the ball (2) to be exposed from the skin contact surface (11) of the outer blade (1a). The ball (2) is larger than the exposure opening (15) and prevents the ball (2) from coming out of the exposure opening (15). The bottom of the outer blade (1a) has a limiting structure that limits the ball (2) to the position of the exposure opening (15).

20. The outer blade assembly of an electric shaver according to claim 18, characterized in that: The outer blade holder (7a) is partially exposed on the outside of the outer blade (1a) and has a skin contact surface (11). The skin contact surface (11) of the outer blade holder (7a) has a plurality of ball bearings (2) protruding from the skin contact surface (11).

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