Shaver moving blade with arc-shaped cutting edge

Abstract

The utility model discloses a shaver moving cutter with an arc-shaped cutting edge, which comprises a cutter head with a central hole; the blades surround the center hole and are integrally arranged in the front direction of the cutterhead; the cutting edge is formed on a beard and hair cutting line on each blade and generally tends to be perpendicular to the rotating direction of the cutterhead; the projection of the cutting edge on the parallel surface of the cutterhead has a first radian which is reversely bent towards the rotating direction of the cutterhead; and the projection of the cutting edge on the vertical surface of the cutter head has a second radian bent towards the front surface of the cutter head. The cutting edge of the blade has amplitudes in two directions, the first radian can limit beards from the two sides of the cutting edge, the beards entering the slotted holes of the cutter net are prevented from sliding out of the cutter net again, and reliable capturing and front cutting of the beards are guaranteed; due to the second radian, the blade can be more precisely attached to the blade net, the blade net can be better attached to the skin, and therefore the shaving effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of razors, in particular to a movable blade of a razor with an arc-shaped cutting edge. Background Art

[0002] A rotary shaver is a common electric shaving device, which is mainly composed of a moving blade, a blade net, a motor and a transmission device. When the motor drives the moving blade to rotate, the moving blade moves under the blade net, using the beard grooves or beard grooves on the blade net to capture the hair and complete the shearing. When the hair is long and hard or the moving blade is not sharp enough, the beard may slip out of the groove of the blade net after contacting the moving blade and being effectively captured, resulting in an unclean shaving. The shaving action needs to be repeated many times to achieve the ideal effect.

[0003] On the other hand, rotary shavers need to be cleaned before and after use to remove dirt and hair residues on the blade. The traditional cleaning method is to disassemble and then clean manually. Rotary shavers with automatic cleaning functions on the market also cannot guarantee efficient cleaning effects and cannot completely remove hair residues and difficult-to-clean dirt.

[0004] The above two factors both increase the time cost of shaving and bring inconvenience to the user, so it is necessary to improve the existing rotary shaver. Utility Model Content

[0005] In order to improve the performance of a rotary shaver and save shaving time, the utility model provides a shaver movable blade with an arc-shaped cutting edge.

[0006] The technical solution adopted by the utility model is as follows: a movable blade of a razor with an arc-shaped cutting edge, comprising: a blade disc having a central hole; at least one circle of blades surrounding the central hole, which are integrally arranged in the front direction of the blade disc; a cutting edge, a hair cutting line formed on each blade, which generally tends to be perpendicular to the rotation direction of the blade disc; a projection of the cutting edge on a plane parallel to the blade disc, which has a first curvature curved in the opposite direction of the rotation direction of the blade disc; a projection of the cutting edge on a plane vertical to the blade disc, which has a second curvature curved in the front direction of the blade disc.

[0007] Preferably, the blade is divided into an upper blade body and a lower blade body, the cutting edge is formed at the front end of the upper blade body, and the lower blade body is connected to the upper blade body and the blade disc.

[0008] Preferably, the upper blade body is a tile-like structure, the upper end surface forms an arc-shaped upper blade surface, the inner side surface forms an arc-shaped lower blade surface, and the intersection line of the upper blade surface and the lower blade surface forms the cutting edge.

[0009] Preferably, the thickness of the upper blade body is smaller than the thickness of the lower blade body.

[0010] Preferably, it also includes: a driving member fixed in the central hole and having a coupling hole for transmission connection with the power shaft of the shaver; at least two rotary arms, located on the back of the blade disc, extending radially outward from the outer edge of the driving member to form a stirring blade structure within the diameter of the blade disc.

[0011] Preferably, the rotary arm is in contact with the back side of the cutter disc.

[0012] Preferably, the height of the spiral arm is greater than its thickness.

[0013] Preferably, the outer end portion of the spiral arm is inclined toward the rotary cutting direction of the blade, and the spiral arm forms a concave liquid-facing surface on one side of the inclined direction.

[0014] Preferably, the driving member and the rotary arm are integrally formed by injection molding with the cutter disc as an inlay.

[0015] Preferably, it also includes: inlay holes, which correspond one-to-one to the spiral arms and are arranged on the cutter disc close to the outer end of the spiral arm.

[0016] The utility model has the following beneficial effects:

[0017] 1. The blade edge has two-way radius. The first radius can limit the beard from both sides of the blade edge to prevent the beard that has entered the knife net slot from sliding out of the knife net again, ensuring reliable capture and forward cutting of the beard; the second radius can make the blade and the knife net fit more precisely, and the knife net can also fit the skin more closely, thereby improving the shaving effect;

[0018] 2. A rotary arm is arranged on the back of the blade disc and connected to the driving part. When the shaver is in cleaning mode, the driving part drives the rotary arm to rotate, thereby generating a stirring effect in the blade head area. This stirring effect can enhance the flow of water, effectively clean the hair residue and dirt on the moving blade and the blade net, and improve the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of an embodiment of the utility model.

[0020] Figure 2 It is an assembly schematic diagram of an embodiment of the utility model.

[0021] Figure 3 It is a top view schematic diagram of an embodiment of the utility model.

[0022] Figure 4 It is a left side schematic diagram of an embodiment of the utility model.

[0023] Figure 5 It is an enlarged schematic diagram of point A in the embodiment of the present utility model.

[0024] In the figure: the cutter disc 1; the center hole 2; the blade 3, the cutting edge 301, the upper cutter body 302, the lower cutter body 303, the upper cutter surface 304, the lower cutter surface 305; the driving member 4; the coupling hole 5; the rotary arm 6; the liquid-facing surface 7; the inlay hole 8. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the embodiments and drawings.

[0026] In the embodiment, Figures 1 to 5 The above is a razor blade with an arc-shaped cutting edge, comprising: a blade disc 1 having a central hole 2; at least one circle of blades 3 surrounding the central hole 2, which are integrally arranged in the front direction of the blade disc 1; a cutting edge 301, which is a hair cutting line formed on each blade 3 and generally tends to be perpendicular to the rotation direction of the blade disc 1. The position of the cutting edge 301 is as follows: Figure 5 As shown by the red thick line; Figure 3 As shown, the projection of the cutting edge 301 on the plane parallel to the cutter disc 1 has a first curvature that is bent in the opposite direction of the rotation direction of the cutter disc 1; Figure 4 As shown, the projection of the cutting edge 301 on the vertical plane of the blade disc 1 has a second curvature that bends toward the front direction of the blade disc 1. The first curvature can limit the beard from both sides of the cutting edge 301, preventing the beard that has entered the blade mesh slot from sliding out of the blade mesh again, ensuring reliable capture and front cutting of the beard; the second curvature can make the blade 3 fit more precisely with the blade mesh, and the blade mesh can also fit the skin more closely, thereby improving the shaving effect. In general, the moving blade of this structure can significantly improve the shaving efficiency of the rotary shaver, shorten the shaving time, and provide convenience for the user.

[0027] like Figure 5 As shown, the blade 3 is divided into an upper blade body 302 and a lower blade body 303, and a cutting edge 301 is formed at the front end of the upper blade body 302, and the lower blade body 303 is connected between the upper blade body 302 and the blade disc 1. Specifically, the upper blade body 302 is a tile-like structure, with an upper blade surface 304 with an arc-shaped upward arch formed on the upper end surface, and an arc-shaped lower blade surface 305 with an arc-shaped inward arch formed on the inner side surface, and the intersection line of the upper blade surface 304 and the lower blade surface 305 forms the cutting edge 301. In this structure, the upper blade body 302 and the lower blade body 303 of the blade 3 can be bent from the blank of the blade disc 1; the upper blade body 302 first passes through a pressing mold to form an arc-shaped lower blade surface 305, and then passes through a shearing mold to form an arc-shaped upper blade surface 304, and then forms a cutting edge 301. It has the advantages of easy implementation of processing technology and good product consistency, and the cost is comparable to that of ordinary moving knives.

[0028] like Figure 5As shown, the thickness of the upper blade body 302 is less than that of the lower blade body 303. The thinner upper blade body 302 is conducive to the bending of the lower blade surface 305, and can provide a longer cutting edge 301 to improve shaving efficiency; the thicker lower blade body 303 can improve the strength and rigidity of the overall structure of the blade 3, reduce the deformation of the blade 3, and thus increase the service life.

[0029] In the embodiment, Figure 1 , 2 As shown, it also includes: a driving member 4, fixed in the central hole 2, having a coupling hole 5 connected to the power shaft of the shaver; at least two rotary arms 6, located on the back of the blade disc 1, extending radially outward from the outer edge of the driving member 4, and forming a stirring blade structure within the diameter range of the blade disc 1. In this embodiment, the rotary arms 6 are arranged on the back of the blade disc and connected to the driving member 4. When the shaver is turned on the cleaning mode, the driving member 4 drives the rotary arms 6 to rotate, thereby generating a stirring effect in the blade head area. This stirring effect can enhance the flow of water, effectively clean the hair residues and dirt on the moving blade and the blade net, and improve the cleaning effect.

[0030] In the embodiment, Figure 1 , 2 As shown, the rotary arm 6 is fitted with the back of the blade disc 1. The rotary arm 6 can not only play a stirring role, but also play a role in strengthening the support of the blade disc 1, thereby improving the overall rigidity of the moving blade and helping to increase the service life.

[0031] In the embodiment, Figure 2 As shown, the height h of the rotary arm 6 is greater than its thickness b, and the outer end of the rotary arm 6 is inclined toward the rotation direction of the driving member 4, that is, the rotary cutting direction of the blade. This design allows the size and angle of the rotary arm 6 to better adapt to the structure of the cutter disc 1, play a better stirring role, thereby enhancing the cleaning force and ensuring thorough cleaning of the moving knife and the knife net.

[0032] In the embodiment, Figure 2 As shown, the outer end of the rotary arm 6 is inclined toward the rotary cutting direction of the blade 3, and the rotary arm 6 forms a concave liquid-facing surface 7 on one side of the inclined direction. The design of the liquid-facing surface 7 allows the water flow to gather on the moving blade, thereby improving the utilization rate of the water flow; at the same time, a stronger flushing force is formed during the stirring process, which can more thoroughly rinse the blade head.

[0033] In the embodiment, Figure 1 , 2As shown, the driving member 4 and the swing arm 6 are an integral injection molded part with the cutter disc 1 as an insert. In addition, an insert hole 8 corresponding to the swing arm 6 is provided on the cutter disc 1 near the outer end of the swing arm 6. The insert hole 8 can be a through hole or a blind hole. This structure can provide better stability and durability, while simplifying the assembly process and reducing costs. The insert hole 8 is used to strengthen and fix the swing arm 6 during the injection molding process, further strengthening the connection stability between the swing arm 6 and the cutter disc 1, and ensuring the firmness and reliability of the overall moving knife.

[0034] Obviously, the above embodiments of the present invention are only examples for explaining the present invention, and are not intended to limit the implementation methods of the present invention. Other obvious changes or modifications derived from the essence of the present invention still fall within the protection scope of the present invention.

Claims

1. A razor blade with an arc-shaped cutting edge, comprising: A cutter disc (1) having a central hole (2); At least one circle of blades (3) surrounding the central hole (2) and integrally arranged in the front direction of the blade disc (1); A cutting edge (301), a hair cutting line formed on each blade (3), generally tending to be perpendicular to the rotation direction of the blade disc (1); It is characterized in that The projection of the cutting edge (301) on a plane parallel to the cutter disc (1) has a first curvature that bends in the opposite direction of the rotation direction of the cutter disc (1); and the projection of the cutting edge (301) on a plane vertical to the cutter disc (1) has a second curvature that bends in the front direction of the cutter disc (1).

2. A razor blade with an arc-shaped cutting edge according to claim 1, characterized in that: The blade (3) is divided into an upper blade body (302) and a lower blade body (303); the cutting edge (301) is formed at the front end of the upper blade body (302); and the lower blade body (303) is connected to the upper blade body (302) and the blade disc (1).

3. A razor blade with an arc-shaped cutting edge according to claim 2, characterized in that: The upper blade body (302) is a tile-like structure, with an upper end surface forming an arc-shaped upper blade surface (304), and an inner side surface forming an arc-shaped lower blade surface (305), and the intersection line of the upper blade surface (304) and the lower blade surface (305) forms the cutting edge (301).

4. A razor blade with an arc-shaped cutting edge according to claim 2 or 3, characterized in that: The thickness of the upper blade body (302) is smaller than the thickness of the lower blade body (303).

5. A razor blade with an arc-shaped cutting edge according to claim 1, characterized in that: Also includes: A driving member (4) fixed in the central hole (2) and having a coupling hole (5) for transmission connection with a power shaft of the shaver; At least two rotary arms (6) are located on the back of the blade disc (1) and extend radially outward from the outer edge of the driving member (4) to form a stirring blade structure within the diameter of the blade disc (1).

6. The movable blade of a razor with an arc-shaped cutting edge according to claim 5, characterized in that: The rotary arm (6) is fitted onto the back side of the cutter disc (1).

7. The movable blade of a razor with an arc-shaped cutting edge according to claim 5, characterized in that: The height (h) of the spiral arm (6) is greater than its thickness (b).

8. The movable blade of a razor with an arc-shaped cutting edge according to claim 5, characterized in that: The outer end of the rotary arm (6) is inclined toward the rotary cutting direction of the blade (3), and the rotary arm (6) forms a concave liquid-facing surface (7) on one side of the inclined direction.

9. The movable blade of a razor with an arc-shaped cutting edge according to claim 5, characterized in that: The driving member (4) and the rotary arm (6) are integrally formed by injection molding and are embedded in the cutter disc (1).

10. The movable blade of a razor with an arc-shaped cutting edge according to claim 8, characterized in that: Also includes: The inlay holes (8) correspond one to one with the rotary arms (6) and are arranged on the cutter disc (1) close to the outer end of the rotary arm (6).

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