CN115416055A - Cutting blade with air holes - Google Patents

Abstract

The invention relates to a cutting blade with air holes, aiming at solving the technical problems that broken hair or chippings are scattered in disorder, the sanitation and comfort of a shaver are influenced and the like because cyclone is formed in a static blade net when the traditional movable blade rotates for cutting; it is characterized in that the substrate is provided with air holes penetrating through two sides of the substrate. The movable blade has the advantages that the air holes penetrating through the substrate are formed in the substrate of the movable blade, so that air can penetrate through the air holes when the substrate rotates to cut, the compression of the substrate on the air is reduced, the cyclone strength in the static blade net is weakened, broken hair or chippings are effectively prevented from splashing outside the static blade net, and the sanitation and the comfort of the shaver or the shaver during use are improved.

Description

Cutting blade with air holes

Technical Field

The invention relates to a shaving device, in particular to a cutting blade with air holes, which is mainly applied to a rotary shaver.

Background

The rotary shaver is mainly used for shaving beards and body hairs and cleaning hair balls on the surface of textile fabric, and the like, and the shaver for shaving the beards and the body hairs and the shaver for cleaning the hair balls are mainly different in the sizes of hair guide holes and similar in other structures. Rotary shavers are very popular because of their low noise and low vibration amplitude.

The rotary shaver mainly comprises a shell and a rotary motor arranged in the shell, and a cutter head component is arranged at the upper end of the shell and is in linkage connection with a driving mechanism. The hair trimming or hair bulb cleaning mainly depends on the matching of the movable knife and the static knife on the knife head component, the hair enters the static knife through the hair guide hole arranged on the static knife, the movable knife rotates along the inner wall of the static knife under the driving of the driving mechanism, and broken hair or scraps are cut off and temporarily stored in the static knife net. However, when the movable knife is rotated and cut, the air is extruded by the rotation of the movable knife, so that a cyclone is formed in the relatively closed static knife mesh, and broken hair or scraps temporarily stored in the static knife mesh can be scattered disorderly under the action of the cyclone, and even fly out through the hair guide holes of the static knife mesh, so that the broken hair or scraps are adhered to the surface of the skin or in the mouth and nasal cavity.

Disclosure of Invention

To solve the above technical problems; the invention provides a cutting blade with air holes, which can reduce the compression to air, remarkably reduce the strength of air flow generated when the cutting blade rotates, effectively prevent broken hair or scraps from splashing outside a static blade net, and improve the use sanitation and comfort of a shaver.

In order to solve the technical problems, the technical scheme adopted by the invention is that the cutting blade with the air holes comprises a substrate; the base sheet is provided with air holes penetrating through two sides of the base sheet.

Preferably, the air holes are provided with a plurality of air holes, and the cross sections of the air holes are circular, square or polygonal.

Preferably, the substrate comprises a cutting part and a supporting part, and the cutting part and the supporting part are respectively provided with a plurality of air holes; the cutting part is inclined relative to the supporting part to form an included angle between the cutting part and the supporting part.

Preferably, the included angle between the cutting part and the supporting part is 10-30 degrees.

Preferably, a front blade and a rear blade are formed on both sides of an upper end edge of the cutting part, respectively, as viewed in a thickness direction of the substrate, the cutting part is inclined toward the front blade side, and the front blade of the cutting part is attached to an inner wall of the stationary blade net when the substrate is rotated for cutting.

Preferably, an inclined plane is arranged 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 b of the inclined plane is less than 15 degrees.

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

Preferably, one side of the substrate is provided with an elastic supporting sheet, one end of the elastic supporting sheet is integrated with the substrate, and the other end of the elastic supporting sheet is inclined to support the substrate during rotary cutting of the substrate.

Preferably, two square holes are arranged on the supporting part of the substrate side by side, the elastic supporting pieces are provided with two pieces, the upper ends of the elastic supporting pieces are connected with the inner wall of the upper ends of the square holes into a whole, and the lower ends of the elastic supporting pieces protrude out of the side wall of the supporting part in an inclined shape and can support the substrate when the substrate is rotationally cut.

The movable blade has the advantages that the air holes penetrating through the substrate are formed in the substrate of the movable blade, so that air can penetrate through the air holes when the substrate rotates to cut, the compression of the substrate on the air is reduced, the cyclone strength in the static blade net is weakened, broken hair or chippings are effectively prevented from splashing outside the static blade net, and the sanitation and the comfort of the shaver or the shaver during use are improved.

Drawings

FIG. 1 is a front view of a cutting blade having a vent hole according to an embodiment of the present invention

FIG. 2 is a side view of a cutting blade having a vent hole according to an embodiment of the present invention

FIG. 3 is a perspective view of a cutting blade with ventilation holes according to an embodiment of the present invention

FIG. 4 is a schematic diagram of the cutting of the prior moving blade and static blade net

FIG. 5 is a schematic diagram of the cutting of the substrate and the stationary blade mesh in the embodiment of the present invention

FIG. 6 is an assembled perspective view of a substrate in an embodiment of the invention

FIG. 7 is an assembled sectional view illustrating a cutting blade having an airing hole according to an embodiment of the present invention

Detailed Description

The embodiments of the invention will be further explained with reference to the drawings in which:

as shown in fig. 1-7, when the movable blade is driven by the movable blade holder 4 to rotate along the inner wall of the stationary blade net 3 for cutting, cut-off beard, hair or hair ball and the like can temporarily exist in the stationary blade net 3, and the stationary blade net 3 is a relatively closed space, so that when the movable blade rotates, cyclone is formed in the stationary blade net 3, cut-off broken hair or debris can splash randomly under the influence of the cyclone, and even fly out through the guide hair hole of the stationary blade net 3, so that the broken hair or debris can adhere to and prick into skin or even mouth and nasal cavity when the user uses the device. In order to solve the technical problem of cyclone generated by the rotation of the moving knife, the technical scheme adopted by the invention is that the cutting blade with the air holes comprises a substrate 1; the base sheet 1 is provided with air holes 2 penetrating through both sides of the base sheet 1. Through arranging the air holes 2 penetrating through the substrate 1 on the substrate 1 of the movable cutter, when the substrate 1 rotates to cut, air can penetrate through the air holes 2, so that the compression of the substrate 1 on the air is reduced, the cyclone strength in the static cutter mesh 3 is weakened, broken hair or scraps are effectively prevented from splashing out of the static cutter mesh 3, and the sanitation and the comfort of the shaver or the shaver during use are improved.

In order to weaken the vortex air flow strength of the movable knife in the static knife net 3 during rotary cutting to the maximum extent, the air holes 2 are provided with a plurality of air holes, and the cross section of each air hole is circular, square or polygonal. Under the condition of ensuring the working strength of the substrate 1, a plurality of air holes 2 can be simultaneously arranged on the substrate 1, and the cross section of each air hole 2 is one of a circle, a square or a polygon. In the use process, the plurality of air holes 2 can greatly increase the air permeable area of the substrate 1 and reduce the extrusion of the substrate 1 to the air to the greatest extent, thereby achieving the purpose of weakening the air rotation strength in the static knife net 3, avoiding broken hair or scraps in the static knife net 3 from splashing out of the static knife net 3 and improving the sanitation and comfort of the shaver or shaver when in use. In the actual production process, the air holes 2 are integrally formed with the substrate 1 in a punching mode, and the shapes of the air holes 2 can be determined according to the actual requirements of users.

In order to improve the bending strength of the substrate 1 and prevent the substrate 1 from bending and deforming during rotary cutting to influence the hair trimming benefit, the substrate 1 comprises a cutting part 11 and a supporting part 12, and the cutting part 11 and the supporting part 12 are respectively provided with a plurality of air holes 2; the cutting portion 11 is inclined with respect to the support portion 12 such that an included angle is formed between the cutting portion 11 and the support portion 12. In the 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, because a plurality of air holes 2 for weakening the air rotation strength in the static knife net 3 are respectively arranged on the cutting part 11 and the supporting part 12, but the bending strength of the substrate 1 can be relatively reduced, the included angle is formed between the cutting part 11 and the supporting part 12 by bending the cutting part 11, the bending strength of the substrate 1 can be effectively improved, the moving knife is prevented from bending deformation during rotary cutting, and the hair trimming benefit of the moving knife is ensured.

In order to balance the hair cutting performance and the working strength of the movable blade to the maximum extent, the included angle a between the cutting part 11 and the supporting part 12 is 10-30 degrees, preferably 24 degrees, if the bending angle of the cutting part 11 is too small, for example, less than 10 degrees, the bending resistance of the substrate 1 is relatively poor, and when the substrate 1 rotates to cut, the cutting part 11 is easy to bend and deform, and the hair cutting performance of the movable blade is affected. On the other hand, if the bending angle of the cutting portion 11 is too large, for example, greater than 30 °, although the bending strength of the substrate 1 is improved, the inclination angle of the cutting portion 11 is relatively increased, which not only increases the distance between the substrate 1 and the inner wall of the stationary blade net 3, needs to increase the height of the substrate 1, and increases the material cost of the movable blade, but also decreases the hair trimming performance of the cutting portion 11, so the embodiment of the present embodiment is a preferred embodiment.

The movable knife is a main component of the rotary shaver, the rotary shaver or the rotary hair bulb trimmer and is used for cutting beards, hairs or hair bulbs extending into the static knife net 3 to realize the trimming of the beards and the hairs or the cleaning of the hair bulbs. Because the existing movable knife contacts the inner wall of the static knife net 3 through the end surface at the upper end of the movable knife, the hair trimming performance of the movable knife can be ensured, but the contact area between the movable knife and the inner wall of the static knife net 3 is relatively overlarge, so that the friction force between the movable knife and the inner wall of the static knife net 3 is increased when the movable knife rotates at a high speed for cutting, the temperature of the movable knife and the static knife net 3 is excessively increased, the temperature of the movable knife and the static knife net 3 is overhigh, the skin can be scalded under serious conditions, and the use comfort of the shaver or the shaver is reduced. Therefore, in order to solve the above technical defects, a front blade 13 and a rear blade 14 are respectively formed on both sides of the upper end edge of the cutting part 11 as viewed from the thickness direction of the substrate 1, the cutting part 11 is inclined toward the front blade 13 side, and the front blade 13 of the cutting part 11 is attached to the inner wall of the stationary blade net 3 when the substrate 1 is rotated for cutting. The movable knife is inserted into the mounting groove 41 of the movable knife seat 4 during assembly, the width of the mounting groove 41 is larger than the thickness of the movable knife, when the movable knife seat 4 rotates along with the driving mechanism, under the action of frictional resistance between the front cutting edge 13 of the cutting part 11 of the substrate 1 and the inner wall of the static knife net 3, the substrate 1 can incline in the reverse direction of the rotating direction, so that the front cutting edge 13 of the cutting part 11 is in contact with the inner wall of the static knife net 3 and rotates along the inner wall of the static knife net 3, and after beards, hairs or hair bulbs enter the static knife net 3 through the hair guiding holes of the static knife net 3, the front cutting edge 13 of the cutting part 11 is matched with the hair guiding holes of the static knife net 3 to cut off the beards, hairs or hair bulbs, so as to realize the trimming of the beards and the hair or the cleaning of the hair bulbs. The front cutting edge 13 of the cutting part 11 is attached to the inner wall of the static cutter mesh 3, and the surface contact between the traditional movable cutter and the inner wall of the static cutter mesh 3 is changed into line contact, so that the hair trimming performance of the movable cutter cannot be reduced, and the working stability of the rotary shaver, the hair shaver or the hair bulb device is ensured; meanwhile, the friction force between the movable cutter and the static cutter net 3 can be effectively reduced, the temperature rise is prevented from being too fast, the temperatures of the movable cutter and the static cutter net 3 are prevented from being too high, and the use comfort of the shaver, the shaver and the hair bulb device is improved. And the frictional resistance between the moving blade and the static blade net 3 is reduced, the starting voltage and the working voltage of the shaver, the shaver and the hair bulb device can be reduced, and the service life of the battery of the shaver, the shaver and the hair bulb device are prolonged.

In order to prevent the technical problems that the contact area between the movable cutter and the inner wall of the static cutter mesh 3 is too large, so that the friction force between the movable cutter and the static cutter mesh 3 is increased, the temperature rise of the movable cutter and the static cutter mesh 3 is too fast, the temperature is too high, the starting voltage and the working current are increased, and the like, an inclined plane 15 is arranged between a front cutting edge 13 and a rear cutting edge 14 of the cutting part 11, 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 plane 15 is smaller than 15 degrees, preferably 5 degrees. The front cutting edges 13 and the rear cutting edges 14 on two sides of the upper end of the cutting part 11 are set to be different in height to form the inclined planes 15, and the front cutting edges 13 are in contact with the inner wall of the static knife net 3 and are higher than the rear cutting edges 14, so that when the substrate 1 rotates to cut, the movable knife is guaranteed to be in line contact with the inner wall of the static knife net 3, the contact area of the movable knife and the static knife net 3 is reduced, the temperature rise of the static knife net 3 and the movable knife is controlled to the maximum degree, the temperature is reduced, the use comfort of the static knife net 3 is improved, the starting voltage and the working current are reduced, meanwhile, the sharpness of the front cutting edges 13 of the cutting part 11 can be improved by utilizing the inclination angle, and the hair trimming efficiency of the movable knife is improved. Of course, the inclination angle b of the inclined surface 15 between the front blade 13 and the rear blade 14 of the cutting part 11 may be set to 15 °, 45 °, 60 ° or the like, but setting an excessively large inclination angle makes the front blade 13 of the cutting part 11 too sharp, and the front blade 13 is likely to break during use, thereby damaging the movable blade.

In order to ensure the working strength of the movable knife and prevent the movable knife from bending and deforming during rotary cutting to influence the trimming and cleaning of beards, hairs or hair bulbs, the thickness of the conventional movable knife is relatively thick, and the production cost of the movable knife is correspondingly increased. In order to reduce the production cost of the movable knife, the thickness of the substrate 1 is less than or equal to 0.2mm. On the basis of the bent cutting part 11, the thicknesses of the cutting part 11 and the supporting part 12 of the substrate 1 are reduced, preferably to be 0.1mm, so that the material cost of the movable knife can be saved, the working strength of the movable knife can be ensured, the substrate 1 is prevented from bending and deforming during rotary cutting, and the hair trimming performance of the movable knife is ensured.

Because the movable knife is inserted into the mounting groove 41 of the movable knife holder 4 during assembly, the width of the mounting groove 41 is wider than the thickness of the movable knife 1, when the movable knife holder 4 rotates along with the driving mechanism, the substrate 1 can tilt in the opposite direction of the rotating direction under the action of the frictional resistance between the front blade 13 of the cutting part 11 of the substrate 1 and the inner wall of the stationary knife net 3. In order to improve the working strength of the substrate 1 during tilting and prevent the supporting portion 12 of the substrate 1 from bending and deforming, the substrate 1 further comprises an elastic supporting piece 16, one end of the elastic supporting piece 16 is connected with the supporting portion 12 into a whole, and the other end of the elastic supporting piece is tilted to support the substrate 1 during the rotary cutting of the substrate 1. By arranging the elastic supporting sheet 16 on one side of the supporting part 12, the elastic supporting sheet 16 is pressed on the limiting platform 42 on the movable cutter holder 4 to provide supporting force for the substrate 1 during oblique cutting, so that the bending or deformation of the supporting sheet during the rotary cutting of the substrate 1 is effectively avoided, and the bending strength of the substrate 1 and the hair trimming performance of the movable cutter are improved. And only the front cutting edge 13 of the cutting part 11 is in contact with the inner wall of the static cutter mesh 3 and keeps in line contact in the cutting process of the movable cutter, so that the temperature rise of the movable cutter and the static cutter mesh 3 is effectively controlled, the surface temperature of the static cutter mesh 3 is reduced, the use comfort of the static cutter mesh 3 is improved, the starting voltage and the working current of the movable cutter are reduced, and the service life of a battery of the shaver are prolonged.

In order to facilitate the production and processing of the elastic supporting pieces 16, the supporting part 12 is provided with two square holes 17 side by side, the elastic supporting pieces 16 are provided with two pieces, the upper ends of the elastic supporting pieces 16 are connected with the inner walls of the upper ends of the square holes 17 into a whole, and the lower ends of the elastic supporting pieces protrude out of the side walls of the supporting part 12 in an inclined manner and can support the substrate 1 when the substrate 1 is rotatably cut. By arranging the two square holes 17 on the supporting part 12 and connecting one end of the elastic supporting piece 16 and the inner wall of the upper end of the square hole 17 into a whole, the elastic supporting piece 16 can be integrally formed by an over-pressing process in the production process, so that the production benefit of the elastic supporting piece 16 is improved and the working strength of the substrate 1 is improved.

The above examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of the present invention.

Claims (9)

1. A cutting blade having a vent, comprising a substrate; it is characterized in that the substrate is provided with air holes penetrating through two sides of the substrate.

2. A cutting blade with a vent according to claim 1, wherein the vent is provided in a plurality and has a circular, square or polygonal cross-section.

3. A cutting blade with ventilation holes as claimed in claim 1, wherein the substrate comprises a cutting portion and a supporting portion, the cutting portion and the supporting portion are respectively provided with a plurality of ventilation holes; the cutting part is inclined relative to the supporting part to form an included angle between the cutting part and the supporting part.

4. The cutting blade with the air holes as claimed in claim 3, wherein the included angle between the cutting part and the supporting part is between 10 ° and 30 °.

5. A cutting blade with vent holes according to claim 4, wherein a front blade edge and a rear blade edge are formed on both sides of an upper end edge of the cutting part as viewed in a thickness direction of the substrate, the cutting part is inclined toward the front blade edge side, and the front blade edge of the cutting part is engaged with an inner wall of the stationary blade net when the substrate is rotated for cutting.

6. A cutting blade with air holes as claimed in claim 3, wherein an inclined plane is arranged between the front cutting edge and the rear cutting edge of the cutting part to make the horizontal height of the front cutting edge higher than that of the rear cutting edge, and the inclination angle b of the inclined plane is less than 15 degrees.

7. A cutting blade with vent holes as defined in claim 1, wherein said substrate has a thickness of 0.2mm or less.

8. A cutting blade with vent holes according to claim 1, wherein an elastic support piece is provided at one side of the substrate, and one end of the elastic support piece is integrally formed with the substrate and the other end thereof is inclined to support the substrate while the substrate is being rotated for cutting.

9. A cutting blade with ventilation holes according to claims 3 and 8, wherein two square holes are formed side by side in the supporting portion of the substrate, the elastic support pieces are provided with two pieces, and each elastic support piece has an upper end integrally connected to the inner wall of the upper end of the square hole and a lower end obliquely protruding from the side wall of the supporting portion and supporting the substrate when the substrate is rotated for cutting.

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