Cutting blade with air vents

Abstract

The present application relates to the cutting blade with the air-permeable hole, to solve the existing moving knife in the rotation cutting and make the static knife net form the cyclone, cause the broken hair or the broken piece to be out of order splash, influence the health and the comfort etc. technical problem when the shaver is used, its characterized in that is equipped with the air-permeable hole that penetrates the both sides of the substrate on the substrate.The beneficial effect of the present application is through the air-permeable hole that penetrates the substrate on the substrate of moving knife, when the substrate rotates and cuts, air can pass through the air-permeable hole, reduce the compression of the substrate to air, thereby weaken the cyclone intensity in the static knife net, effectively avoid the broken hair or the broken piece to splash out of the static knife net, improve the health and the comfort when the shaving razor or the shaver is used.

Description

TECHNICAL FIELD

[0001] The present application relates to a shaving device, more particularly to a cutting blade with air holes, mainly applied to rotary shavers. BACKGROUND

[0002] The rotary shaver is mainly used for shaving beard and body hair and cleaning the lint on the surface of textile fabric. The shaver for shaving beard and body hair and the shaver for cleaning the lint are mainly different in the size of the hair guide holes and similar in other structures. The rotary shaver is popular because of its low working noise and small vibration amplitude.

[0003] The rotary shaver mainly comprises a housing and a rotary motor installed in the housing. A cutter assembly is installed at the upper end of the housing and connected with the driving mechanism. The hair trimming or lint cleaning mainly depends on the cooperation of the moving cutter and the static cutter on the cutter assembly. The hair enters the static cutter through the hair guide holes arranged on the static cutter. The moving cutter rotates along the inner wall of the static cutter under the drive of the driving mechanism to cut and temporarily store the broken hair or debris in the static cutter net. However, when the moving cutter rotates to cut, the air is compressed by the rotation of the moving cutter, which forms a cyclone in the relatively closed static cutter net. The broken hair or debris temporarily stored in the static cutter net will be scattered disorderly under the action of the cyclone, and even fly out of the static cutter net through the hair guide holes, so that the broken hair or debris adheres to the surface of the skin or the oral cavity. SUMMARY

[0004] In order to solve the above technical problems, the present application provides a cutting blade with air holes, which can reduce the compression of air, significantly reduce the air flow intensity generated when the cutting blade rotates, effectively prevent the broken hair or debris from splashing out of the static cutter net, and improve the use hygiene and comfort of the shaver.

[0005] To solve the above technical problems, the technical solution adopted by the present application is a cutting blade with air holes, which comprises a base sheet. Air holes are arranged on the base sheet and penetrate through both sides of the base sheet. The base sheet comprises a cutting part and a supporting part, and a plurality of air holes are arranged on the cutting part and the supporting part, respectively. An elastic support sheet is arranged on one side of the base sheet. One end of the elastic support sheet is integrated with the base sheet, and the other end is inclined and supports the base sheet when the base sheet rotates to cut. Two square holes are arranged side by side on the supporting part of the base sheet. Two elastic support sheets are arranged, and the upper ends of the elastic support sheets are connected with the inner walls of the upper ends of the square holes to form an integral structure. The lower ends of the elastic support sheets are inclined and protrude out of the side walls of the supporting part, and can support the base sheet when the base sheet rotates to cut.

[0006] Preferably, the air holes are arranged in plurality, and the cross section of the air holes is circular, square or polygonal.

[0007] Preferably, the cutting part is inclined relative to the supporting part to form an included angle between the cutting part and the supporting part.

[0008] Preferably, the included angle between the cutting part and the supporting part is 10°-30°.

[0009] Preferably, from the thickness direction of the substrate, a front cutting edge and a rear cutting edge are formed on both sides of the upper end edge of the cutting part, the cutting part is inclined to the side of the front cutting edge, and the front cutting edge of the cutting part is attached to the inner wall of the static blade net when the substrate is rotated and cut.

[0010] Preferably, an inclined surface is provided between the front cutting edge and the rear cutting edge of the cutting part, so that the horizontal height of the front cutting edge is higher than that of the rear cutting edge, and the inclination angle of the inclined surface is less than 15°.

[0011] Preferably, the thickness of the substrate is less than or equal to 0.2mm.

[0012] The beneficial effects of the present application are that by providing a gas permeable hole through the substrate on the moving blade, when the substrate is rotated and cut, air can pass through the gas permeable hole, reducing the compression of the substrate on the air, thereby weakening the intensity of the cyclone in the static blade net, effectively preventing the splashing of hair or debris out of the static blade net, and improving the hygiene and comfort of the razor or shaver when used. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 Front view of the cutting blade with a gas permeable hole according to an embodiment of the present application

[0014] Fig. 2 Side view of the cutting blade with a gas permeable hole according to an embodiment of the present application

[0015] Fig. 3 Perspective view of the cutting blade with a gas permeable hole according to an embodiment of the present application

[0016] Fig. 4 Cutting schematic diagram of the existing moving blade and static blade net

[0017] Fig. 5 Cutting schematic diagram of the substrate and the static blade net in an embodiment of the present application

[0018] Fig. 6 Assembly perspective view of the substrate in an embodiment of the present application

[0019] Fig. 7 Assembly sectional view of the cutting blade with a gas permeable hole according to an embodiment of the present application DETAILED DESCRIPTION

[0020] The embodiments of the present application will be further described below with reference to the accompanying drawings:

[0021] As Figs. 1-7As shown, when the moving cutter rotates to cut along the inner wall of the static cutter net 3, the cut-off stubbles, hairs or hair balls will be temporarily stored in the static cutter net 3, and the static cutter net 3 is a relatively closed space, and when the moving cutter rotates, a cyclone will be formed in the static cutter net 3, and the cut-off hairs or debris will be scattered in disorder under the influence of the cyclone, and even fly out through the guide hole of the static cutter net 3, so that the cut-off hairs or debris will adhere to or even penetrate into the skin or oral cavity of the user during use. To solve the technical problem of the cyclone generated by the rotation of the moving cutter, the technical solution adopted by the present application is a cutting blade with air holes, which comprises a base sheet 1, and air holes 2 are arranged on the base sheet 1 and penetrate through both sides of the base sheet 1. By arranging the air holes 2 penetrating through the base sheet 1 on the base sheet 1 of the moving cutter, when the base sheet 1 rotates to cut, air can pass through the air holes 2, reducing the compression of the base sheet 1 on the air, thereby reducing the intensity of the cyclone in the static cutter net 3, effectively preventing the cut-off hairs or debris from flying out of the static cutter net 3, and improving the hygiene and comfort during use of the shaver or shaver.

[0022] To maximize the weakening of the cyclone intensity in the static cutter net 3 during the rotation and cutting of the moving cutter, the air holes 2 are arranged in a plurality of numbers, and the cross section of the air holes 2 is circular, square or polygonal. Under the condition of ensuring the working strength of the base sheet 1, a plurality of air holes 2 can be arranged on the base sheet 1 at the same time, and the cross section of the air holes 2 is one of circular, square or polygonal. During use, the plurality of air holes 2 can greatly increase the air permeation area of the base sheet 1, maximize the compression of the base sheet 1 on the air, thereby achieving the purpose of reducing the intensity of the cyclone in the static cutter net 3, preventing the cut-off hairs or debris in the static cutter net 3 from flying out of the static cutter net 3, and improving the hygiene and comfort during use of the shaver or shaver. In actual production process, the air holes 2 are integrally punched and formed with the base sheet 1, and the shape of the air holes 2 can be determined according to the actual needs of the user.

[0023] To improve the bending strength of the base sheet 1 and prevent the base sheet 1 from being bent and deformed during rotation and cutting, affecting the hair trimming effect, the base sheet 1 comprises a cutting part 11 and a supporting part 12, and a plurality of air holes 2 are arranged on the cutting part 11 and the supporting part 12 respectively; the cutting part 11 is inclined relative to the supporting part 12 to form an included angle between the cutting part 11 and the supporting part 12. In actual production process, the cutting part 11 is bent relative to the supporting part 12 to form an included angle between the cutting part 11 and the supporting part 12. Since a plurality of air holes 2 for reducing the intensity of the cyclone in the static cutter net 3 are arranged on the cutting part 11 and the supporting part 12 respectively, the bending strength of the base sheet 1 will be relatively reduced. By bending the cutting part 11 to form an included angle between the cutting part 11 and the supporting part 12, the bending strength of the base sheet 1 can be effectively improved, preventing the moving cutter from being bent and deformed during rotation and cutting, and ensuring the hair trimming effect of the moving cutter.

[0024] To maximize the balance between the hair trimming performance and working intensity of the movable blade, the angle ∠a between the cutting portion 11 and the supporting portion 12 is between 10° and 30°, preferably 24°. If the bending angle of the cutting portion 11 is too small, such as less than 10°, the bending resistance of the base plate 1 will be relatively poor. During the rotation and cutting of the base plate 1, the cutting portion 11 will be easily bent and deformed, affecting the hair trimming performance of the movable blade. If the bending angle of the cutting portion 11 is too large, such as greater than 30°, although the bending strength of the base plate 1 is improved, the inclination angle of the cutting portion 11 will also be relatively increased. This will not only increase the distance between the base plate 1 and the inner wall of the static blade net 3, requiring the height of the base plate 1 to be increased, and increasing the material cost of the movable blade, but the excessively large inclination angle will also reduce the hair trimming performance of the cutting portion 11. Therefore, the embodiment of this embodiment is the preferred embodiment.

[0025] The moving blade is the main component of the rotary shaver, rotary hair cutter or rotary ball trimmer, which is used to cut the beard, hair or ball that extends into the static blade net 3, so as to realize the trimming of the beard or hair or the cleaning of the ball. Since the end face of the upper end of the moving blade contacts the inner wall of the static blade net 3, although the hair trimming performance of the moving blade can be ensured, the contact area between the moving blade and the inner wall of the static blade net 3 is relatively large, which increases the friction between the moving blade and the inner wall of the static blade net 3 during high-speed rotation cutting, and causes the temperature of the moving blade and the static blade net 3 to rise too fast, so that the temperature of the moving blade and the static blade net 3 is too high, which may cause skin burns in serious cases, and reduces the use comfort of the shaver or hair cutter. Therefore, in order to solve the above technical defects, from the thickness direction of the base sheet 1, the front blade 13 and the rear blade 14 are respectively formed on both sides of the upper end edge of the cutting part 11, the cutting part 11 is inclined to the side of the front blade 13, and the front blade 13 of the cutting part 11 is in contact with the inner wall of the static blade net 3 during rotation cutting of the base sheet 1. The moving blade is inserted into the mounting groove 41 of the moving blade seat 4 during assembly, and the width of the mounting groove 41 is wider than the thickness of the moving blade. When the moving blade seat 4 rotates with the driving mechanism, under the action of the frictional resistance between the front blade 13 of the cutting part 11 of the base sheet 1 and the inner wall of the static blade net 3, the base sheet 1 will be inclined to the opposite direction of the rotation direction, so that the front blade 13 of the cutting part 11 is in contact with the inner wall of the static blade net 3 and rotates along the inner wall of the static blade net 3. When the beard, hair or ball enters the static blade net 3 through the guide hole of the static blade net 3, it will be cut off by the cooperation of the front blade 13 of the cutting part 11 and the guide hole of the static blade net 3, so as to realize the trimming of the beard or hair or the cleaning of the ball. By contacting the front blade 13 of the cutting part 11 with the inner wall of the static blade net 3, the surface contact between the traditional moving blade and the inner wall of the static blade net 3 is changed to line contact, which not only does not reduce the hair trimming performance of the moving blade, but also ensures the working stability of the rotary shaver, hair cutter or ball trimmer. At the same time, it can effectively reduce the friction between the moving blade and the static blade net 3, avoid the temperature rising too fast and the temperature of the moving blade and the static blade net 3 being too high, and improve the use comfort of the shaver, hair cutter and ball trimmer. Moreover, the reduction of the frictional resistance between the moving blade and the static blade net 3 can also reduce the starting voltage and working voltage of the shaver, hair cutter and ball trimmer, increase the battery use time limit and service life of the shaver, hair cutter and ball trimmer.

[0026] To prevent the moving cutter from contacting the inner wall of the static cutter net 3 with too large an area, thereby increasing the friction between the moving cutter and the static cutter net 3, causing the temperature of the moving cutter and the static cutter net 3 to rise too fast, the temperature to be too high, the starting voltage and working current to increase, and other technical problems, the cutting part 11 is provided with an inclined surface 15 between the front cutting edge 13 and the rear cutting edge 14, so that the horizontal height of the front cutting edge 13 is higher than that of the rear cutting edge 14, and the inclination angle ∠b of the inclined surface 15 is less than 15°, preferably 5°. The front cutting edge 13 and the rear cutting edge 14 on both sides of the upper end of the cutting part 11 are set to different heights to form the inclined surface 15. Since the front cutting edge 13 contacts the inner wall of the static cutter net 3 and is higher than the rear cutting edge 14, when the substrate 1 is rotated and cut, not only is the moving cutter kept in line contact with the inner wall of the static cutter net 3, reducing the contact area between the moving cutter and the static cutter net 3, but also the temperature rise of the static cutter net 3 and the moving cutter is controlled to the maximum extent, the temperature is reduced, the comfort of use of the static cutter net 3 is improved, and the starting voltage and working current are reduced. At the same time, the inclination angle can also be used to improve the sharpness of the front cutting edge 13 of the cutting part 11 and the efficiency of the moving cutter in trimming hair. Of course, the inclination angle ∠b of the inclined surface 15 between the front cutting edge 13 and the rear cutting edge 14 of the cutting part 11 can also be set to 15°, 45° or 60°, etc. However, a too large inclination angle will make the front cutting edge 13 of the cutting part 11 too sharp, which can easily cause the front cutting edge 13 to break and damage the moving cutter during use. Therefore, the embodiment is a preferred embodiment.

[0027] To ensure the working strength of the moving cutter and prevent the moving cutter from being bent and deformed during rotation and cutting, affecting the trimming and cleaning of the beard, hair or hair ball, the thickness of the existing moving cutter is relatively thick, which correspondingly increases the production cost of the moving cutter. To reduce the production cost of the moving cutter, the thickness of the substrate 1 is ≤0.2 mm. On the basis of the bent cutting part 11, the thickness of the cutting part 11 and the support part 12 of the substrate 1 is reduced to 0.1 mm, which not only saves the material cost of the moving cutter, but also ensures the working strength of the moving cutter and prevents the substrate 1 from being bent and deformed during rotation and cutting, thereby ensuring the hair trimming performance of the moving cutter.

[0028] Since the moving blade is inserted into the installation groove 41 of the moving blade seat 4 when assembled, the width of the installation groove 41 is wider than the thickness of the moving blade 1, when the moving blade seat 4 rotates with the driving mechanism, under the friction resistance between the front cutting edge 13 of the cutting part 11 of the base sheet 1 and the inner wall of the static blade net 3, the base sheet 1 will be inclined towards the opposite direction of the rotation direction. In order to improve the working strength of the base sheet 1 when inclined, and prevent the bending deformation of the supporting part 12 of the base sheet 1, the base sheet 1 further comprises a elastic supporting sheet 16, one end of which is connected with the supporting part 12 integrally, and the other end is inclined and supports the base sheet 1 when the base sheet 1 rotates and cuts. By arranging the elastic supporting sheet 16 on one side of the supporting part 12, the elastic supporting sheet 16 is pressed against the limiting platform 42 on the moving blade seat 4 to provide support force when the base sheet 1 is inclined and cut, effectively avoiding the bending or deformation of the supporting sheet when the base sheet 1 rotates and cuts, improving the bending strength of the base sheet 1 and the hair trimming performance of the moving blade. And ensuring that only the front cutting edge 13 of the cutting part 11 contacts and maintains linear contact with the inner wall of the static blade net 3 during cutting, effectively controlling the temperature rise of the moving blade and the static blade net 3, reducing the surface temperature of the static blade net 3, improving the use comfort of the static blade net 3, and reducing the starting voltage and working current of the moving blade, prolonging the use time limit and service life of the battery of the shaver.

[0029] In order to facilitate the production and processing of the elastic supporting sheet 16, two square holes 17 are arranged side by side on the supporting part 12, the elastic supporting sheet 16 is provided with two pieces, and the upper end of each elastic supporting sheet 16 is connected with the upper end inner wall of the square hole 17 integrally, and the lower end is inclined and protrudes out of the side wall of the supporting part 12 and can support the base sheet 1 when the base sheet 1 rotates and cuts. By arranging two square holes 17 on the supporting part 12, and connecting one end of the elastic supporting sheet 16 with the upper end inner wall of the square hole 17 integrally, it is possible to be over-stamped and formed integrally during production, improving the production efficiency of the elastic supporting sheet 16 and improving the working strength of the base sheet 1.

[0030] The above embodiments should not be considered as limiting the application, but any improvement based on the spirit of the application should be within the scope of protection of the application.

Claims

1. A cutting blade with air holes, comprising a substrate (1); characterized in that The substrate (1) is provided with ventilation holes (2) penetrating both sides of the substrate (1). The substrate (1) comprises a cutting portion (11) and a supporting portion (12). The cutting portion (11) and the supporting portion (12) are respectively provided with a plurality of ventilation holes (2). An elastic support piece (16) is provided on one side of the substrate (1). One end of the elastic support piece (16) is integrally formed with the substrate (1), and the other end is inclined to support the substrate (1) when the substrate (1) is rotated and cut. Two square holes (17) are arranged side by side on the supporting portion (12) of the substrate (1). The elastic support piece (16) is provided with two pieces, and the upper end of each elastic support piece (16) is integrally connected to the inner wall of the upper end of the square hole (17), and the lower end protrudes out of the side wall of the supporting portion (12) in an inclined shape and can support the substrate (1) when the substrate (1) is rotated and cut.

2. The cutting blade with air holes according to claim 1, characterized in that There are a plurality of the air holes (2), and the cross-sections thereof are circular, square or polygonal.

3. The cutting blade with air holes according to claim 1, characterized in that The cutting portion (11) is inclined relative to the supporting portion (12) so that an angle is formed between the cutting portion (11) and the supporting portion (12).

4. The cutting blade with air holes according to claim 1, characterized in that The included angle ∠a between the cutting portion (11) and the supporting portion (12) is between 10° and 30°.

5. The cutting blade with air holes according to claim 1, characterized in that Viewed from the thickness direction of the substrate (1), a front blade (13) and a rear blade (14) are respectively formed on both sides of the upper edge of the cutting portion (11), the cutting portion (11) is inclined toward the front blade (13), and the front blade (13) of the cutting portion (11) is in contact with the inner wall of the static blade net when the substrate (1) is rotated for cutting.

6. The cutting blade with air holes according to claim 5, characterized in that An inclined surface is provided between the front blade (13) and the rear blade (14) of the cutting portion (11) so that the horizontal height of the front blade (13) is higher than that of the rear blade (14), and the inclination angle ∠b of the inclined surface is less than 15°.

7. The cutting blade with air holes according to claim 1, characterized in that The thickness of the substrate (1) is ≤0.2 mm.

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