CN218170486U - Move sword and tool bit subassembly - Google Patents

Abstract

The utility model relates to a moving knife and knife head component, which is characterized in that a substrate comprises a cutting part and a supporting part, and a front cutting edge and a rear cutting edge are respectively formed on two sides of the edge of the upper end of the cutting part when seen from the thickness direction of the substrate; the upper end of the cutting part is contacted with the inner wall of the static cutter net when seen from the width direction of the substrate, and the front cutting edge of the cutting part is jointed with the inner wall of the static cutter net when the substrate is rotated and cut. The utility model has the advantages that the front cutting edge of the cutting part is attached to the inner wall of the static knife net, the surface contact between the traditional movable knife and the inner wall of the static knife net is changed into line contact, and the working stability of the shaver is ensured; meanwhile, the friction force between the movable cutter and the static cutter net can be reduced, the over-high temperature of the movable cutter and the static cutter net and the over-high temperature of the movable cutter and the static cutter net are avoided, and the use comfort of the shaver is improved. And the frictional resistance between the movable knife and the static knife net is reduced, the starting voltage and the working current of the shaver can be reduced, the service life of a battery of the shaver is prolonged, and the service life of the battery of the shaver is prolonged.

Description

Move sword and tool bit subassembly

Technical Field

The utility model relates to a shaving head, more specifically the moving sword that relates to a rotation type shaving that says so is mainly applied to in the rotation type shaving ware.

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 size of pores, and other structures are similar. 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 cutter and the static cutter on the cutter head component, the hair enters the static cutter through the hair inlet holes formed in the static cutter, and the movable cutter rotates along the inner wall of the static cutter under the driving of the driving mechanism, so that the hair entering the static cutter is trimmed or hair bulbs are cleaned.

The movable knife and the static knife of the existing knife head component are contacted by utilizing the end surface of the movable knife to be attached to the inner wall of the static knife, although hair trimming can be realized by adopting the matching mode, in the hair trimming process, the end surface of the movable knife is attached to the inner wall of the static knife, the contact area is too large, the friction resistance is correspondingly increased, the temperature rise of the static knife and the movable knife is too fast, the temperature of the movable knife and the static knife is improved, and the use comfort level of the static knife is reduced; and the working current of the cutter head component in the working process is increased, and the working time limit of the rechargeable battery of the shaver is shortened. Secondly, in order to ensure the working stability of the movable knife and prevent the movable knife from bending and deforming in the rotary cutting process, the thickness of the movable knife is generally more than 0.2mm, and the production cost of the movable knife is relatively increased.

SUMMERY OF THE UTILITY MODEL

To solve the above technical problems; the utility model provides a move sword and tool bit subassembly, this move the sword not only will move the face contact of sword and quiet sword and change into line contact, reduce area of contact, reduce quiet sword and the temperature rise of moving the sword, promote tool bit subassembly's use travelling comfort, simultaneously, still through moving the sword and tear the processing of bending open, improve the working strength who moves the sword, reduce the material cost who moves the sword.

In order to solve the technical problems, the technical proposal adopted by the utility model is a moving knife, which comprises a substrate; the substrate comprises a cutting part and a supporting part, and a front blade and a rear blade are respectively formed on two sides of the edge of the upper end of the cutting part when viewed from the thickness direction of the substrate; the upper end of the cutting part is contacted with the inner wall of the static cutter net when seen from the width direction of the substrate, and the front cutting edge of the cutting part is jointed with the inner wall of the static cutter net when the substrate is rotated and cut.

Preferably, the upper end of the cutting part is arc-shaped and matched with the arc of the static knife net when viewed from the width direction of the substrate.

Preferably, the cutting portion is inclined toward the front blade side as viewed in the thickness direction of the substrate such that an included angle is formed between the cutting portion and the supporting portion.

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

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 cutting part and the supporting part is less than or equal to 0.2mm.

Preferably, air holes penetrating through the cutting part and the supporting part are formed at the cutting part and the supporting part close to the cutting part.

Preferably, the plurality of air holes are arranged and are circular, square or polygonal.

Preferably, the substrate further comprises an elastic supporting piece, one end of the elastic supporting piece is connected with the supporting part into a whole, and the other end of the elastic supporting piece is inclined and supports the substrate when the substrate is rotatably cut.

Preferably, the supporting part is provided with two square holes 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 walls 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 walls of the supporting part in an inclined manner and can support the substrate when the substrate is rotationally cut.

A cutter head component comprises the movable cutter.

The utility model has the advantages that the front cutting edge of the cutting part is attached to the inner wall of the static cutter mesh, the surface contact between the traditional movable cutter and the inner wall of the static cutter mesh is changed into line contact, the hair trimming performance of the movable cutter can not be reduced, and the working stability of the rotary shaver is ensured; meanwhile, the friction force between the movable cutter and the static cutter net can be effectively reduced, the over-high temperature of the movable cutter and the static cutter net and the over-high temperature of the movable cutter and the static cutter net are avoided, and the use comfort of the shaver is improved. And the frictional resistance between the movable knife and the static knife net is reduced, the starting voltage and the working voltage of the shaver can be reduced, the service life of the battery of the shaver is prolonged, and the service life of the battery is prolonged.

Drawings

FIG. 1 is a schematic view of the rotary cutting of a conventional moving blade and stationary blade net

FIG. 2 is a schematic view of the rotary cutting of the moving blade and the static blade net in the embodiment of the present invention

FIG. 3 is a front view structure diagram of a movable knife of the embodiment of the present invention

FIG. 4 is a side view structure diagram of the embodiment of the present invention

FIG. 5 is a perspective view of a movable knife of the present invention

FIG. 6 is a perspective view of the movable knife and the movable knife holder of the present invention

Fig. 7 is a cross-sectional structure view of a tool bit assembly according to an embodiment of the present invention

FIG. 8 is a perspective view of a tool bit assembly according to an embodiment of the present invention

Detailed Description

The embodiments of the present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 2-5, the technical solution adopted by the present invention is a moving blade, the moving blade 1 is a main component of a rotary shaver, a rotary shaver or a rotary hair bulb trimmer, and is used for cutting off the beard extending into the static blade net 2, so as to trim the beard. Because what move the contact of sword 1 and quiet sword net 2 inner wall now is the terminal surface that moves the sword upper end, though can guarantee to move the hair trimming performance of sword 1, it is then too big relatively to move the area of contact between sword 1 and the quiet sword net 2 inner wall, makes the frictional force increase between the sword 1 and the quiet sword net 2 inner wall when making high-speed rotatory cutting, can lead to moving the temperature rise of sword 1 and quiet sword net 2 too fast, causes to move the temperature of sword 1 and quiet sword net 2 too high, can scald skin under the serious condition, reduces the use travelling comfort of razor. Therefore, in order to solve the technical defects, the movable knife 1 comprises a substrate 11, the substrate 11 comprises a cutting part 111 and a supporting part 112, and a front blade 113 and a rear blade 114 are respectively formed on two sides of the upper end edge of the cutting part 111 when viewed from the thickness direction of the substrate 11; the upper end of the cutting part 111 is in contact with the inner wall of the stationary blade net 2 when viewed from the width direction of the substrate 11, and the front blade 113 of the cutting part 111 is attached to the inner wall of the stationary blade net 2 when the substrate 11 is rotated for cutting. The movable blade 1 is inserted into the mounting groove 41 of the movable blade holder 4 during assembly, the width of the mounting groove 41 is wider than the thickness of the movable blade 1, when the movable blade holder 4 rotates along with the driving mechanism, the substrate 11 can incline in the reverse direction of the rotating direction under the action of the frictional resistance between the front blade 113 of the cutting part 111 of the substrate 11 and the inner wall of the static blade net 2, so that the front blade 113 of the cutting part 111 is in contact with the inner wall of the static blade net 2 and rotates along the inner wall of the static blade net 2, and after a beard enters the static blade net 2 through the beard guiding hole of the static blade net 2, the front blade 113 of the cutting part 111 is matched with the beard guiding hole of the static blade net 2 to cut off the beard, so that beard trimming is realized. The front cutting edge 113 of the cutting part 111 is attached to the inner wall of the static cutter net 2, so that the traditional surface contact between the movable cutter 1 and the inner wall of the static cutter net 2 is changed into line contact, the hair trimming performance of the movable cutter 1 cannot be reduced, and the working stability of the rotary shaver is ensured; meanwhile, the friction force between the movable cutter 1 and the static cutter net 2 can be effectively reduced, the temperature rise is prevented from being too fast, the temperatures of the movable cutter 1 and the static cutter net 2 are prevented from being too high, and the use comfort of the shaver is improved. And the frictional resistance between the movable blade 1 and the static blade net 2 is reduced, the starting voltage and the working voltage of the shaver can be reduced, and the service life of a battery of the shaver are prolonged.

In order to improve the comfort when shaving, the static blade net 2 of the rotary shaver is arranged in a circular arc shape protruding along the center, and the skin feeling when the static blade net 2 is contacted with the skin is improved by utilizing the arc shape of the static blade net 2. Therefore, in order to ensure the engagement of the movable blade 1 with the stationary blade net 2, the upper end of the cutting portion 111 is curved and matches the curved shape of the stationary blade net 2 as viewed in the width direction of the base sheet 11. Of course, the rotary shaver may also use a planar static blade net 2, and if the static blade net 2 is planar, the upper end of the cutting portion 111 may be arranged to be flat, and the specific arrangement may be determined according to the cross-sectional shape of the static blade net 2.

In order to reduce the material cost of the movable blade 1, the thickness of the existing movable blade 1 is more than 0.2mm, so that the bending strength of the movable blade is improved by increasing the material thickness, and although the working strength of the movable blade 1 can be improved by increasing the material thickness, the production cost of the movable blade 1 can be correspondingly improved. In order to ensure the working strength of the movable blade 1 and reduce the production cost of the movable blade 1, the cutting portion 111 is inclined toward the front blade 113 side when viewed from the thickness direction of the substrate 11, so that an included angle is formed between the cutting portion 111 and the supporting portion 112. When the substrate 11 rotates, the front blade 113 of the cutting part 111 is attached to the arc-shaped inner wall of the static blade net 2 to cut off the beard extending into the beard inlet hole of the static blade net 2, so that the hair trimming performance of the movable blade 1 is ensured; meanwhile, the bending strength of the movable blade 1 can be improved by utilizing the bent cutting part 111, the material thickness of the substrate 11 can be reduced under the condition of ensuring the working strength of the substrate 11, the production cost of the movable blade 1 is reduced, and the working performance of the movable blade 1 is ensured.

In order to balance the hair cutting performance and the working strength of the movable blade 1 to the maximum extent, the angle of the included angle between the cutting part 111 and the supporting part 112 is 10 to 30 degrees, preferably 24 degrees, if the bending angle of the cutting part 111 is too small, for example, less than 10 degrees, the bending resistance of the substrate 11 is relatively poor, and when the substrate 11 rotates to cut, the cutting part 111 is easy to bend and deform, which affects the hair cutting performance of the movable blade 1. On the other hand, if the bending angle of the cutting portion 111 is too large, for example, greater than 30 °, although the bending strength of the base sheet 11 is improved, the inclination angle of the cutting portion 111 is relatively increased, which not only increases the distance between the base sheet 11 and the inner wall of the stationary blade net 2, but also increases the height of the base sheet 11, increases the material cost of the movable blade 1, and further, the too large inclination angle also reduces the hair cutting performance of the cutting portion 111, so the embodiment of the present embodiment is a preferred embodiment.

In order to prevent the technical problems that the contact area between the movable knife 1 and the inner wall of the static knife net 2 is too large, so that the friction force between the movable knife 1 and the static knife net 2 is increased, the temperature rise of the movable knife 1 and the static knife net 2 is too fast, the temperature is too high, the starting voltage and the working current are increased, and the like, an inclined plane 115 is arranged between the front knife edge 113 and the rear knife edge 114 of the cutting part 111, so that the horizontal height of the front knife edge 113 is higher than that of the rear knife edge 114, and the inclination angle b of the inclined plane 115 is smaller than 15 degrees and preferably 5 degrees. Set up the preceding cutting edge 113 and the back cutting edge 114 of cutting portion 111 upper end both sides to different height formation inclined plane 115, because preceding cutting edge 113 contacts and is higher than back cutting edge 114 with quiet sword net 2 inner wall, like this when the rotatory cutting of substrate 11, not only guarantee to move sword 1 and quiet sword net 2 inner wall and keep the line contact, reduce the area of contact of moving sword 1 and quiet sword net 2, the at utmost control quiet sword net 2 and the temperature rise of moving sword 1, reduce the temperature, promote the use comfort level of quiet sword net 2 and reduce starting voltage and operating current, simultaneously, can also utilize inclination to promote the sharpness of cutting portion 111 preceding cutting edge 113, promote the hair pruning efficiency of moving sword 1. Of course, the inclination angle ≤ b of the inclined surface 115 between the front blade 113 and the rear blade 114 of the cutting portion 111 may be set to 15 °, 45 °, 60 °, or the like, but setting an excessively large inclination angle makes the front blade 113 of the cutting portion 111 too sharp, and the front blade 113 is likely to break during use, and the movable blade 1 is damaged, and therefore, the embodiment of the present embodiment is a preferred embodiment.

In order to ensure the working strength of the movable knife 1 and prevent the movable knife 1 from generating bending deformation during rotary cutting to influence the trimming and cleaning of beards, hairs or hair bulbs, the thickness of the material of the conventional movable knife 1 is relatively thick, and the production cost of the movable knife 1 is correspondingly increased. In order to reduce the production cost of the movable blade 1, the thickness of the cutting part 111 and the supporting part 112 is less than or equal to 0.2mm. On the basis of the bent cutting part 111, the thicknesses of the cutting part 111 and the supporting part 112 of the substrate 11 are reduced, preferably 0.1mm, so that the material cost of the movable blade 1 can be saved, the working strength of the movable blade 1 can be ensured, the substrate 11 is prevented from bending and deforming during rotary cutting, and the hair trimming performance of the movable blade 1 is ensured.

When the movable knife 1 is driven by the movable knife seat 4 to rotate and cut along the inner wall of the static knife net 2, cut-off broken beard, hair or hair balls and the like can temporarily store in the static knife net 2, a relatively closed space is formed in the static knife net 2, when the movable knife 1 rotates, cyclone can be formed in the static knife net 2, cut-off broken wool shreds can splash disorderly under the influence of the cyclone, and even the broken wool shreds are guided by the guide beard Kong Feichu of the static knife net 2, so that the broken wool shreds can be adhered to and pricked into skin or oral and nasal cavities when a user uses the hair cutter. In order to solve the technical problem of the cyclone generated by the rotation of the movable blade 1, air holes 116 penetrating through the cutting part 111 and the supporting part 112 are arranged at the positions of the cutting part 111 and the supporting part 112 close to the cutting part 111. Through arranging the air holes 116 at the cutting part 111 on the substrate 11 of the movable blade 1 and the connecting part of the cutting part 111 and the supporting part 112, when the substrate 11 rotates and cuts, air can pass through the air holes 116, the extrusion to the air is reduced by the cutting part 111 and the supporting part 112 of the substrate 11, the cyclone phenomenon in the static blade net 2 can be obviously weakened, the strength of the cyclone is reduced, the broken wool chips are effectively prevented from splashing out of the static blade net 2, and the sanitation and comfort of the shaver during use are improved.

In order to reduce the cyclone strength of the movable knife 1 in the static knife net 2 during rotary cutting to the maximum extent, a plurality of air holes 116 are arranged, and the shape of the air holes is circular, square or polygonal. Under the condition of ensuring the working strength of the cutting part 111 and the supporting part 112 of the substrate 11, a plurality of air holes 116 may be simultaneously formed on the cutting part 111 and the supporting part 112, and the shape of the air holes 116 is one of a circle, a square or a polygon. In the use process, the plurality of air holes 116 can greatly increase the air permeable area of the substrate 11, and reduce the extrusion of the substrate 11 to the air to the greatest extent, thereby achieving the purpose of weakening the air rotation strength in the static knife net 2, avoiding the broken wool chips in the static knife net 2 from splashing out of the static knife net 2, and improving the sanitation and comfort of the shaver in use.

Since the movable blade 1 is inserted into the mounting groove 41 of the movable blade holder 4 during assembly, the width of the mounting groove 41 is wider than the thickness of the movable blade 1, and when the movable blade holder 4 rotates along with the driving mechanism, the substrate 11 tilts in the opposite direction of the rotating direction under the action of the frictional resistance between the front blade 113 of the cutting part 111 of the substrate 11 and the inner wall of the stationary blade net 2. In order to improve the working strength of the substrate 11 during the inclination and prevent the bending deformation of the supporting portion 112 of the substrate 11, the substrate 11 further comprises an elastic supporting piece 117, one end of the elastic supporting piece 117 is connected with the supporting portion 112 into a whole, and the other end of the elastic supporting piece 117 is inclined to support the substrate 11 during the rotary cutting of the substrate 11. By arranging the elastic supporting sheet 117 at one side of the supporting portion 112, the supporting force is provided by the elastic supporting sheet 117 when the substrate 11 is obliquely cut, so that the bending or deformation of the supporting sheet when the substrate 11 is rotationally cut is effectively avoided, and the bending strength of the substrate 11 and the hair trimming performance of the movable blade 1 are improved. And only the front cutting edge 113 of the cutting part 111 is in contact with the inner wall of the static cutter mesh 2 and keeps in line contact in the cutting process of the movable cutter 1, so that the temperature rise of the movable cutter 1 and the static cutter mesh 2 is effectively controlled, the surface temperature of the static cutter mesh is reduced, the use comfort of the static cutter mesh is improved, the starting voltage and the working current of the movable cutter 1 are reduced, and the service life of a battery of the shaver is prolonged.

In order to facilitate the production and processing of the elastic supporting pieces 117, the supporting portion 112 is provided with two square holes 118 side by side, the elastic supporting pieces 117 are provided with two pieces, the upper ends of the elastic supporting pieces 117 are connected with the inner walls of the upper ends of the square holes 118 into a whole, and the lower ends of the elastic supporting pieces protrude out of the side walls of the supporting portion 112 in an inclined manner and can support the substrate 11 when the substrate 11 is rotatably cut. By arranging the two square holes 118 on the supporting portion 112 and connecting one end of the elastic supporting piece 117 with the inner wall of the upper end of the square hole 118 into a whole, the elastic supporting piece 117 can be integrally formed by a stamping process in the production process, so that the production benefit of the elastic supporting piece 117 is improved and the working strength of the substrate 11 is improved.

As shown in fig. 6-8, a cutter head assembly comprises the moving blade 1, the static blade net 2, the static blade holder 3, the moving blade holder 4 and the floating elastic sheet 5, wherein the static blade net 2 is installed at one end of the static blade holder 3 through the fixing ring 6, the moving blade holder 4 is provided with a plurality of floating elastic sheets which are perpendicular to the moving blade holder 4, one side of each installation groove 41 is respectively provided with a limiting platform 42, the moving blades 1 are the same in number as the installation grooves 41, are respectively inserted into the installation grooves 41 and are connected with the floating elastic sheet 5 which is fixed at the bottom of the moving blade holder 4, and the elastic supporting sheet 117 is arranged on the limiting platform 42 to support the moving blades 1.

The above embodiments should not be considered 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 (11)

1. A movable knife comprises a substrate; the cutting device is characterized in that the substrate comprises a cutting part and a supporting part, and a front blade and a rear blade are respectively formed on two sides of the edge of the upper end of the cutting part when viewed from the thickness direction of the substrate; the upper end of the cutting part is contacted with the inner wall of the static cutter net when seen from the width direction of the substrate, and the front cutting edge of the cutting part is jointed with the inner wall of the static cutter net when the substrate is rotated and cut.

2. The moving blade according to claim 1, wherein the upper end of the cutting portion is curved and matches the curve of the stationary blade net when viewed in the width direction of the base sheet.

3. The moving blade according to claim 1, wherein the cutting portion is inclined toward the front blade edge side as viewed in the thickness direction of the base sheet so that an included angle is formed between the cutting portion and the supporting portion.

4. The movable blade according to claim 3 wherein the angle of the included angle between the cutting portion and the support portion is between 10 ° and 30 °.

5. The movable knife according to claim 1, characterized in that an inclined plane is arranged between the front blade and the rear blade of the cutting part to make the horizontal height of the front blade higher than that of the rear blade, and the inclination angle b of the inclined plane is less than 15 degrees.

6. The movable blade according to claim 1 wherein the thickness of said cutting portion and said support portion is less than or equal to 0.2mm.

7. The moving blade according to claim 1 wherein air holes are formed through the cutting portion and the supporting portion near the cutting portion.

8. A moving blade according to claim 7 wherein said plurality of air holes are circular, square or polygonal.

9. The moving blade according to claim 1 wherein said substrate further comprises an elastic support blade, one end of said elastic support blade is integrally connected to said support portion, and the other end of said elastic support blade is inclined and supports said substrate during the rotation cutting of said substrate.

10. The moving blade according to claim 8 wherein the supporting portion has two side-by-side square holes, the elastic supporting pieces have two pieces, and the upper end of each elastic supporting piece is integrally connected to the inner wall of the upper end of the square hole, and the lower end of each elastic supporting piece is obliquely protruded out of the side wall of the supporting portion and can support the substrate during the rotary cutting of the substrate.

11. A cutter head assembly comprising a movable cutter according to any one of claims 1 to 10.

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