CN217703511U

CN217703511U - Tool bit subassembly and stationary blade with stop gear

Info

Publication number: CN217703511U
Application number: CN202221852757.XU
Authority: CN
Inventors: 不公告发明人
Original assignee: ZHEJIANG HAISHUN ELECTRICAL CO Ltd
Current assignee: ZHEJIANG HAISHUN ELECTRICAL CO Ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-11-01
Anticipated expiration: 2032-07-18

Abstract

The utility model relates to a tool bit subassembly and stationary blade with stop gear, its characterized in that is equipped with stop gear at stationary blade internal surface, and the knife section is arranged in outside stop gear and is contacted with stop gear, and the cutting tooth of knife section and the laminating of the cutting tooth terminal surface of stationary blade and the knife section can follow stop gear reciprocating swing under the external drive under the exogenic action. The beneficial effects of the utility model are that be equipped with stop gear at stationary blade internal surface, the blade is arranged in stop gear and is contacted outside and with stop gear, when external force orders about the blade reciprocating swing, stop gear just can restrict the reciprocating swing direction of blade, prevent effectively that the blade from taking place the dislocation or deflecting at swing in-process both ends, and simultaneously, the blade can also be avoided taking place drunkenness from top to bottom under stop gear's restriction, the job stabilization nature of promotion blade that can be very big, the benefit is pruned to the hair of improvement tool bit subassembly.

Description

Tool bit subassembly and stationary blade with stop gear

Technical Field

The utility model relates to a prune the tool bit subassembly of hair, more specifically the tool bit subassembly and quiet blade that says so relate to one kind and have stop gear, mainly are applied to the hair clipper field.

Background

The cutter head assembly is the main component of the hair shaving tool and is mainly used for trimming and shaving beard and body hair. The hair cutting or shaving process mainly depends on the reciprocating swing of the movable blade along the fixed blade to cut beard or body hair to shave the hair. Because the moving blade of the existing cutter head component does not have a limiting mechanism to limit the moving blade when reciprocating along the static blade, the moving blade is easy to be misplaced, deflected or moved in the reciprocating swinging process along the static blade under the driving of the driving mechanism, the hair trimming benefit of the cutter head component is influenced, and the moving blade and the static blade are damaged.

Secondly, the hair is cut off mainly by the cooperation of the cutting teeth on the static blade and the cutting teeth on the movable blade in the trimming process. The hair cutting effect depends mainly on the thickness of the cutting teeth on the static blade. For example, the thinner the thickness of the cutting teeth on the stationary blade, the shorter the remaining length of the hair roots on the skin surface when cutting hair, the cleaner the skin surface, and the better the hair removal effect. If the thickness of the static cutter tooth is thicker, although the hair can be cut, the residual length of the hair root on the skin surface is longer under the influence of the thickness of the cutting tooth, and the hair cutting effect is correspondingly reduced. Because the thickness of the existing cutting teeth is the same as that of the static blade, in order to ensure the working strength of the static blade, the thicknesses of the static blade and the cutting teeth are basically more than 0.3mm, and therefore, the hair trimming effect is relatively poor.

SUMMERY OF THE UTILITY MODEL

To solve the above technical problems; the utility model provides a cutter head component with a limiting mechanism and a static blade, which can limit the reciprocating swing of the movable blade by utilizing the limiting mechanism, avoid the dislocation, deflection or play of the movable blade when reciprocating swing along the static blade and ensure the hair trimming benefit; meanwhile, the thickness of each cutting tooth in the static blade is reduced under the condition of ensuring the working strength of the static blade, so that the hair trimming effect is improved.

In order to solve the technical problems, the technical scheme adopted by the utility model is a tool bit assembly with a limiting mechanism, which comprises a static blade and a movable blade, wherein the static blade is provided with cutting teeth; the inner surface of the static blade is provided with a limiting mechanism, the movable blade is arranged outside the limiting mechanism and is contacted with the limiting mechanism, and the cutting teeth of the movable blade are attached to the end surface of the cutting teeth of the static blade under the action of external force and can swing back and forth along the limiting mechanism under the drive of the external force.

Preferably, the limiting mechanism is a flat limiting piece which is fixed on the inner surface of the static blade; the movable blade is provided with a limiting hole, the length of the limiting hole is larger than that of the limiting piece, and the side walls of the two sides of the limiting hole are in contact with the side walls of the two sides of the limiting piece, so that the movable blade can swing back and forth along the limiting piece under the driving of external force.

Preferably, the side wall of the limiting piece is provided with a limiting block, and the limiting block enables the limiting piece and the side wall of the limiting hole to form line contact or point contact.

Preferably, at least two protruding arc blocks perpendicular to the swinging direction are arranged on the side walls of the two sides of the limiting piece respectively, the arc center point of each arc block is tangent to the side walls of the two sides of the limiting hole to form vertical line contact, and the arc blocks form the limiting block.

Preferably, at least one triangular block with a triangular protruded screenshot is arranged on the side walls of the two sides of the limiting piece, one sharp corner edge of the triangular block is parallel to the side walls of the two sides of the limiting hole and forms line contact, and the triangular block forms the limiting block.

Preferably, the length of the triangular block is the same as that of the limiting piece.

Preferably, the side walls of the two sides of the limiting piece are respectively provided with at least two triangular blocks which are arranged at intervals, each triangular block is respectively fixed at the two ends of the side wall of the limiting piece, and one acute angle edge of each triangular block is parallel to the side wall of the limiting hole and forms line contact.

Preferably, at least two conical bodies are respectively arranged on the side walls of the two sides of the limiting piece, the top point of each conical body forms point contact with the side wall corresponding to the limiting hole, and the conical bodies form the limiting block.

Preferably, the thickness T of the limiting sheet₁Thickness T of moving blade₂The following relation is satisfied:

0.5T₂≤T₁≤2T₂。

preferably, the device also comprises a movable cutter seat, the movable cutter seat is provided with a swinging block, the lower end face of the swinging block is provided with a swinging groove, and the swinging groove is in linkage connection with the driving mechanism; the two sides of the swing block are respectively provided with a support sheet, the upper end surface of each support sheet is provided with at least one positioning column, and each positioning column is respectively inserted into the positioning hole of the movable blade so that the movable blade and the movable blade seat are synchronously linked.

Preferably, a reinforcing pad is arranged between the movable blade and the movable blade seat, a square hole which is larger than or equal to the limiting hole is formed in the reinforcing pad, and the reinforcing pad is attached to the upper end face of the movable blade so that the square hole is overlapped with the limiting hole; the corresponding position of the reinforcing pad is provided with a cylindrical hole with the same diameter as the limiting hole; and the positioning column arranged on the supporting sheet penetrates through the cylindrical hole and is inserted into the positioning hole to synchronously link the movable cutter holder, the reinforcing pad and the movable cutter blade.

Preferably, a connecting seat with the width smaller than the length of the square hole and crossing the square hole is arranged in the middle of the reinforcing pad, a concave groove is formed in one end face of the swinging block opposite to the swinging groove, and the concave groove is covered outside the connecting seat to enable the reinforcing pad to be synchronously connected with the movable cutter seat in a linkage mode.

Preferably, the connecting seat comprises side plates which are connected with two side walls of the square hole of the reinforcing pad and are vertical to the reinforcing pad and a bridging plate which is connected with the side plates, arc-shaped positioning pieces are symmetrically arranged on two sides of the bridging plate, and a plurality of through holes in different shapes are arranged on the bridging plate; arc-shaped cavities are arranged on two sides of a concave groove in a swinging block of the movable cutter seat, the positioning piece is arranged in the arc-shaped cavities, and a protruding linkage block matched with the through hole in shape is arranged at the bottom of the concave groove and is arranged in the corresponding through hole.

Preferably, at least two spring columns are arranged on the supporting sheet opposite to the other end face provided with the positioning column, jacking springs are respectively sleeved on the spring columns, and the other ends of the jacking springs are abutted against the static cutter holder to enable the movable cutter holder to press the reinforcing pad and enable the cutting teeth of the movable cutter to be attached to the end faces of the cutting teeth of the static cutter; two ends of the static knife holder are respectively connected with the static knife blade to fix the movable knife holder, the reinforcing pad and the movable knife blade which can swing in a reciprocating manner between the static knife blade and the static knife holder.

Preferably, both ends of the static blade are respectively provided with a threaded seat with a threaded hole, and each threaded seat is fixedly connected with the inner surface of the static blade; the periphery of the static cutter holder is sealed, the inside of the static cutter holder is provided with a containing cavity, two ends of the static cutter holder are respectively provided with a screw hole, the static cutter holder is in threaded connection with a threaded seat on the static cutter blade through screws, the dynamic cutter holder and the reinforcing pad can swing in a reciprocating mode and are connected with the dynamic cutter blade, and a swing groove of the dynamic cutter holder is arranged outside the static cutter holder.

In order to improve the hair trimming effect of the cutter head component, a technical scheme of a static cutter blade is also provided on the basis of the cutter head component, and the static cutter blade specifically comprises a substrate, wherein a plurality of cutter teeth are arranged at the edge of at least one side of the substrate side by side to form a cutter tooth group, the cutter tooth group is downwards sunken along the outer surface of the substrate to ensure that the outer surface of each cutter tooth in the cutter tooth group is lower than the outer surface of the substrate, the inner surface of the cutter tooth group protrudes out of the inner surface of the substrate, and the edge of the cutter tooth group is connected with the substrate through a section difference surface; the inner surface of the cutter tooth group is provided with a cutting working surface, and the thickness of each cutting tooth in the cutter tooth group is smaller than that of the substrate.

Preferably, the thickness of the cutter tooth group is greater than or equal to 0.08mm and less than the thickness of the substrate.

Preferably, the depth of the downward recess of the blade teeth along the outer surface of the substrate is less than the thickness of the substrate.

Preferably, the section difference surface of the outer surface of the substrate, which is connected with the cutter tooth group, is inclined, and the inclination angle is less than or equal to 75 degrees.

Preferably, the segment difference surface comprises a first segment difference surface, a second segment difference surface and a third segment difference surface, the first segment difference surface enables the tooth root of each cutting tooth in the cutter tooth group to be connected with the substrate into a whole, the second segment difference surface and the third segment difference surface enable two ends of the cutter tooth group to be connected with the substrate respectively, and the distance between the connection positions of the second segment difference surface and the third segment difference surface and the substrate and the edge of the two ends of the substrate are 3 mm-5 mm respectively.

Preferably, the inclination angles of the second section of differential surface and the third section of differential surface are the same, and the inclination angles are equal to, larger than or smaller than the inclination angle of the first section of differential surface.

Preferably, the cross section of the outer surface of the substrate is arc-shaped, and the inner surface of the substrate is a horizontal plane and is lower than the cutting working surface of the cutter tooth group.

Preferably, the outer surface and the inner surface of the substrate are both horizontal surfaces, and the inner surface is lower than the cutting working surface of the cutter tooth group.

Preferably, one side of the substrate, on which the cutter tooth group is arranged, is provided with a bent edge with the height less than or equal to the thickness of the substrate, so that the end part of each cutting tooth in the cutter tooth group forms a tooth protrusion.

The beneficial effects of the utility model are that be equipped with stop gear at stationary blade internal surface, the blade is arranged in stop gear and is contacted outside and with stop gear, when external force orders about the blade reciprocating swing, stop gear just can restrict the reciprocating swing direction of blade, prevent effectively that the blade from taking place the dislocation or deflecting at swing in-process both ends, and simultaneously, the blade can also be avoided taking place drunkenness from top to bottom under stop gear's restriction, the job stabilization nature of promotion blade that can be very big, the benefit is pruned to the hair of improvement tool bit subassembly.

Drawings

FIG. 1 is a perspective view of a cutter head assembly with a position-limiting mechanism according to an embodiment of the present invention

FIG. 2 is a front view of a cutter head assembly with a position-limiting mechanism according to an embodiment of the present invention

FIG. 3 isbase:Sub>A sectional view of the structure at A-A in FIG. 2

FIG. 4 is a sectional view of the structure at B-B in FIG. 2

FIG. 5 is a perspective view of the movable blade and the position-limiting mechanism of the first embodiment of the present invention

FIG. 6 is a perspective view of the moving blade and the limiting mechanism of the second embodiment of the present invention

FIG. 7 is a perspective view of the movable blade and the limiting mechanism of the third embodiment of the present invention

FIG. 8 is a view showing an assembly structure of the movable blade holder, the reinforcing pad, the movable blade, and the stationary blade according to the embodiment of the present invention

FIG. 9 is a perspective view of the embodiment of the present invention

FIG. 10 is a front perspective view of a movable knife holder according to an embodiment of the present invention

FIG. 11 is a bottom perspective view of the movable knife holder in the embodiment of the present invention

Fig. 12 is an explosion structure diagram of a cutter head assembly with a limiting mechanism according to an embodiment of the present invention

FIG. 13 is a front perspective view of a stationary blade according to an embodiment of the present invention

FIG. 14 is a bottom perspective view of a stationary blade according to an embodiment of the present invention

Fig. 15 is a cross-sectional structure view of a stationary blade according to an embodiment of the present invention

Fig. 16 is a cross-sectional structural view of a second embodiment of a stationary blade 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. 1-12, the utility model relates to a cutter head component with a limiting mechanism, which comprises a static cutter blade 1 and a movable cutter blade 2, wherein the static cutter blade 1 is provided with cutting teeth 31; the cutting teeth 31 of the movable blade 2 are attached to the end faces of the cutting teeth 31 of the fixed blade 1 under the action of external force, and when hairs enter the cutting teeth 31 of the fixed blade 1, the cutting teeth 31 in the movable blade 2 can cut the hairs, so that the hairs are cut and shaved. In order to prevent the movable blade 2 from being dislocated, deflected or moved when reciprocating along the fixed blade 1 under the driving of the driving mechanism, the limiting mechanism 4 is arranged on the inner surface of the fixed blade 1, the movable blade 2 is arranged outside the limiting mechanism 4 and is contacted with the limiting mechanism 4, when the movable blade 2 is driven by external force to reciprocate, the limiting mechanism 4 can limit the reciprocating swinging direction of the movable blade 2, the dislocation or deflection of two ends of the movable blade 2 in the swinging process is effectively prevented, meanwhile, the movable blade 2 can be prevented from moving up and down under the limitation of the limiting mechanism 4, the working stability of the movable blade 2 can be greatly improved, and the hair trimming benefit of the blade head assembly is improved.

Because the size of the cutter head component is generally smaller, the production and assembly benefits are improved and the production cost is reduced in order to facilitate the production and assembly of the limiting mechanism 4, the limiting mechanism 4 is a flat limiting piece 41, and the limiting piece 41 is fixed on the inner surface of the static blade 1. Set up stop gear 4 into the platykurtic, can directly through stamping process one shot forming during production, the structure is extremely simple, and not only the productivity effect is higher, and when the equipment, utilize processes such as adhesive or spot welding also can be quick as an organic whole with spacing piece 41 and static blade 1 internal surface fixed connection, show the assembly benefit that promotes static blade 1 moreover, reduction in production cost. In order to facilitate the limiting piece 41 to limit the reciprocating swing direction of the moving blade 2, the moving blade 2 is provided with a limiting hole 21, and the side walls of the two sides of the limiting piece 41 are contacted to enable the moving blade 2 to swing back and forth along the limiting piece 41 under the driving of external force. The limiting sheet 41 is provided with the limiting hole 21, and two side walls of the limiting hole 21 are in contact with two corresponding side walls of the limiting sheet 41. When the movable blade 2 is driven by the driving mechanism to swing in a reciprocating manner, the side walls on the two sides of the limiting piece 41 can limit the side walls on the two sides of the limiting hole 21, so that the two ends of the movable blade 2 are effectively prevented from being dislocated, deflected or moved when swinging in a reciprocating manner along the stationary blade 1, and the working stability of the movable blade 2 is ensured. In order to ensure the hair cutting performance of the movable blade 2 when reciprocating along the stationary blade 1, the length of the limiting hole 21 is greater than that of the limiting piece 41, and the limiting piece 41 is positioned in the middle of the limiting hole 21, so that swing spaces are formed at two ends of the limiting hole 21, and the length of the swing spaces is greater than the left-right swing stroke of the movable blade 2.

In order to reduce the frictional resistance between the limiting piece 41 and the limiting hole 21 in the movable blade 2 and reduce the temperature rise (the surface temperature of the movable blade 2 and the stationary blade 1 rises due to the frictional heating, and the comfortable feeling of the skin is reduced even the skin is scalded when the hair is cut) and the working noise of the movable blade 2 and the stationary blade 1, the side wall of the limiting piece 41 is provided with a limiting block 42, and the limiting block 42 enables the limiting piece 41 and the side wall of the limiting hole 21 to form line contact or point contact. The limiting block 42 is additionally arranged on the side wall of the limiting sheet 41, which is in contact with the limiting hole 21, and the limiting block 42 and the corresponding side wall of the limiting hole 21 form line contact or point contact, so that the material use of the limiting sheet 41 can be reduced, and the material cost is reduced; moreover, when the cutter head assembly is assembled, the contact area between the limiting hole 21 and the limiting sheet 41 can be greatly reduced, the friction resistance between the movable blade 2 and the limiting sheet 41 is obviously reduced, the temperature rise and the working noise of the movable blade 2 and the static blade 1 are reduced, and the use comfort of the cutter head assembly is improved.

As shown in fig. 5-7, in order to optimize the structure of the limiting piece 41, facilitate production, processing and assembly, and reduce the frictional resistance between the moving blade 2 and the limiting piece 41, at least two protruding arc blocks perpendicular to the swinging direction are respectively disposed on the sidewalls of the two sides of the limiting piece 41, the arc middle point of each arc block is tangent to the sidewalls of the two sides of the limiting hole 21 to form a vertical line contact, and the arc blocks constitute the limiting block 42. The two ends of the side walls of the two sides of the limiting piece 41 are respectively provided with the arc-shaped blocks, the arc-shaped blocks are perpendicular to the swing direction of the movable blade 2 and can also be regarded as perpendicular to the thickness direction of the limiting piece 41, the structure is set, and when the structure is produced, the limiting piece 41 can be formed in one step through a stamping forming process, so that the material of the limiting piece 41 is reduced, and meanwhile, the production benefit of the limiting piece 41 can be improved. Secondly, by utilizing the arc-shaped block perpendicular to the swing direction of the movable blade 2, in the working process of the cutter head assembly, the arc-shaped middle points of the arc-shaped block are respectively in line contact with the side walls corresponding to the limiting holes 21 of the movable blade 2, so that the contact area between the limiting holes 21 of the movable blade 2 and the limiting pieces 41 is reduced. After the contact area is reduced, the frictional resistance between the movable blade 2 and the limiting piece 41 can be synchronously reduced, the temperature rise of the movable blade 2 and the fixed blade 1 is correspondingly reduced, and the comfort when the tool bit assembly is used is improved. In the actual production process, the arc-shaped block can also be directly arranged on the side wall corresponding to the limiting hole 21, the side wall of the limiting block 42 is contacted with the arc-shaped midpoint line of the arc-shaped block, the same technical purpose can be achieved, the same technical effect can be achieved, and the arc-shaped block can be specifically determined according to the requirements of customers or actual requirements.

Of course, in an actual production process, a line contact structure parallel to the swing direction of the movable blade 2 may be adopted. As shown in fig. 6, at least one triangular block with a triangular shape in a protruded sectional view is disposed on the side walls of the two sides of the limiting piece 41, one sharp corner edge of the triangular block is parallel to the side walls of the two sides of the limiting hole 21 and forms line contact, and the triangular block forms the limiting block 42. The length of the triangular blocks can be the same as that of the limiting piece 41, and two triangular blocks can be arranged at two ends of the side walls of two sides of the limiting piece 41 respectively. With the structure, the contact area between the movable blade 2 and the limiting blade 41 can be reduced, and the frictional resistance between the movable blade 2 and the limiting blade 41 can be reduced. However, one of the acute angle edges of the triangular block is parallel to the limiting block 42 and forms line contact, so that the limiting piece 41 and the triangular block cannot be formed in a one-time stamping mode under the influence of the angle of the acute angle edge during production, and the arc block is large in production difficulty compared with the arc block, so that the arc blocks are arranged at two ends of two sides of the limiting piece 41 and are the preferred implementation mode.

Besides the above-mentioned vertical line contact and horizontal line contact, a point contact structure may be adopted between the position-limiting hole 21 of the movable blade 2 and the position-limiting piece 41. As shown in fig. 7, at least two cones are respectively disposed on the sidewalls of the two sides of the stopper piece 41, the top of each cone forms a point contact with the corresponding sidewall of the stopper hole 21, and the cone constitutes the stopper 42. The contact area between the movable blade 2 and the limiting piece 41 can be reduced, and the friction resistance and the working temperature rise can be reduced. However, the tapered bodies arranged on the side walls of the two sides of the limiting piece 41 are difficult to process, and the processing difficulty is high, so that the arc-shaped block perpendicular to the swing direction of the movable blade 2 is adopted as an optimal implementation mode.

In order to ensure the working stability of the movable blade 2 and prevent the movable blade 2 from dislocation, deflection or movement in the reciprocating swing process, the thickness T of the limiting sheet₁Thickness T of moving blade₂The following relation is satisfied: 0.5T₂≤T₁≤2T₂Thickness T of the limiting piece₁Preferably 1T₂The thickness of the limiting piece 41 is the same as that of the movable blade 2, so that when the movable blade 2 swings back and forth, the limiting piece 41 can limit the back and forth swinging direction of the movable blade 2, and the thickness of the limiting piece 41 can be used for preventing the movable blade 2 from separating from the limiting piece 41 when the movable blade 2 moves up and down, thereby ensuring the working stability of the movable blade 2. Of course, the thickness of the stopper 41 may be set to be half of the thickness of the movable blade 2 in order to reduce the production cost, but since the stopper 41 is reduced in thickness so that the movable blade 2 is easily separated from the stopper 41 when the movable blade 2 moves up and down, the thickness of the stopper 41 is preferably the same as the thickness of the movable blade 2. Secondly, from the technical purpose and the technical effect to be achieved, the thicker the thickness of the limiting piece 41 is, the better the thickness is, for example, the thickness of the limiting piece 41 is 2 times of the thickness of the movable blade 2, so that although the dislocation, the deflection and the vertical movement of the movable blade 2 during the reciprocating swing can be absolutely prevented, the increase of the thickness of the limiting piece 41 will correspondingly increase the material cost of the limiting piece 41 and the production cost of the cutter head assembly, and therefore, the embodiment of the present embodiment is the preferred embodiment.

In order to ensure the hair cutting performance of the cutter head component and facilitate the reciprocating swing of the movable blade 2, the cutter head component also comprises a movable cutter base 5, the movable cutter base 5 is provided with a swing block 51, the lower end surface of the swing block 51 is provided with a swing groove 52, and the swing groove 52 is in linkage connection with a driving mechanism. By arranging the swing groove 52 on the lower end surface of the swing block 51, after the cutter head assembly and the shaving tool are assembled, the swing groove 52 can be in linkage connection with a driving mechanism of the shaving tool, and the movable blade 2 is driven to swing back and forth by utilizing the high-speed rotation of an eccentric shaft of the driving mechanism, so that the hair is trimmed. Since the driving mechanism and the eccentric shaft of the shaving tool are conventional prior art and the present application does not relate to the improvement of the driving mechanism and the eccentric shaft, the driving mechanism and the eccentric shaft structure will not be described in detail herein. In order to ensure the synchronous linkage of the movable blade 2 and the movable blade seat 5, support sheets 53 are respectively arranged at two sides of the swinging block 51, at least one positioning column 54 is arranged on the upper end surface of each support sheet 53, and each positioning column 54 is respectively inserted into the positioning hole 23 of the movable blade 2 to make the movable blade 2 and the movable blade seat 5 synchronously linked. By respectively arranging the supporting sheets 53 at two sides of the swinging block 51 and respectively arranging the positioning columns 54 on the supporting sheets 53, when the hair trimmer is assembled, the movable blade 2 and the movable blade seat 5 can be in linkage connection by inserting the positioning columns 54 into the positioning holes 23 on the movable blade 2, and when the movable blade seat 5 is driven by the driving mechanism to swing in a reciprocating manner, the movable blade 2 can also swing in a reciprocating manner along the fixed blade 1 along with the movable blade seat 5 under the matching of the positioning columns 54 and the positioning holes 23, so that the hair trimming is realized. In the actual production process, the swing block 51, the swing groove 52, the support piece 53 and the positioning column 54 are integrated into a whole and are integrally formed through injection molding.

Because the thickness of the movable blade 2 is thin, in order to prevent the movable blade 2 from being stressed to be distorted or deformed when the movable blade 2 is driven by the positioning column 54 of the movable blade holder 5 to swing in a reciprocating manner, a reinforcing pad 6 is arranged between the movable blade 2 and the movable blade holder 5, a square hole 61 which is larger than or equal to the limiting hole 21 is arranged on the reinforcing pad 6, and the reinforcing pad 6 is attached to the upper end face of the movable blade 2 so that the square hole 61 is overlapped with the limiting hole 21; a cylindrical hole 62 with the same diameter as the limiting hole 21 is arranged at the corresponding position of the reinforcing pad 6; the positioning post 54 arranged on the supporting piece 53 passes through the cylindrical hole 62 and is inserted into the positioning hole 23 to make the movable knife holder 5, the reinforcing pad 6 and the movable knife blade 2 synchronously linked. Through set up between moving blade holder 5 and moving blade 2 and strengthen pad 6, reference column 54 on backing sheet 53 passes the cylinder hole 62 on strengthening pad 6 and inserts in locating hole 23, when moving blade holder 5 is reciprocal when swinging under actuating mechanism's the driving force that acts on moving blade 2 with original reference column 54 can decompose strengthen pad 6 and moving blade 2, has reduced the power that moving blade 2 bore, effectively avoids moving blade 2 to take place distortion or deformation when reciprocal swing, guarantees the job stabilization nature of moving blade 2. Secondly, when producing, strengthen filling up 6 for the plane body its width and length slightly be greater than spacing hole 21 of moving blade 2 and with the laminating of moving blade 2 terminal surface, for preventing to influence the reciprocal swing of moving blade 2, strengthen the centre department of filling up 6 and be equipped with spacing hole 21 assorted square hole 61, like this when spacing piece 41 thickness equals or is greater than moving blade 2 thickness, then can avoid spacing piece 41 terminal surface to contact to strengthen filling up 6, promote the job stabilization nature of moving blade 2. From the practical use effect, the reinforcing pad 6 may not be provided, for example, the thickness of the movable blade 2 is directly increased to improve the bending strength of the movable blade 2, and the same purpose can be achieved. But increasing the thickness of the movable blade 2 not only increases the material cost of the movable blade 2; moreover, the positioning column 54 on the movable tool post 5 that drives the movable blade 2 to synchronously swing back and forth is also prone to fracture. Therefore, a separate reinforcing pad 6 is provided as a preferred embodiment, which can increase the bending strength of the movable blade 2 while minimizing the increase of material cost, and can also avoid the positioning post 54 on the movable blade seat 5 from being broken by force by adding a corresponding structure on the reinforcing pad 6, thereby improving the use safety and the working stability of the blade assembly.

In order to prevent the positioning column 54 of the movable blade seat 5 from being broken due to stress when the movable blade 2 and the reinforcing pad 6 are driven to swing back and forth; the middle of the reinforcing pad 6 is provided with a connecting seat 63 which has a width smaller than the length of the square hole 61 and spans the square hole 61, the swinging block 51 is provided with a concave groove 55 relative to the swinging groove 52 and one end surface, and the concave groove 55 is covered outside the connecting seat 63 to ensure that the reinforcing pad 6 is synchronously linked and connected with the movable cutter seat 5. Through set up the connecting seat 63 that spanes quad slit 61 in the middle of strengthening 6 quad slits 61 of pad, when the equipment, just can be with setting up the concave groove 55 card that sets up on swing piece 51 and go into outside the connecting seat 63 and make strengthen 6 and move blade holder 5 and form mechanical spacing, when actuating mechanism drove the reciprocal swing of blade holder 5, the swing power of moving blade holder 5 mainly acts on concave groove 55 and connecting seat 63, just so can reduce the power that reference column 54 on the backing sheet 53 bore, effectively avoid reference column 54 atress on the backing sheet 53 and fracture, guarantee the job stabilization nature of moving blade 2. In the actual production process, curb plate 631, bridging board 632 of connecting seat 63 and reinforcement pad 6 structure as an organic whole through stamping forming, promote the working strength who strengthens pad 6.

When the movable knife holder 5 drives the movable knife blade 2 to swing back and forth, in order to prevent the positioning column 54 from breaking due to stress and facilitate the assembly and positioning of the movable knife holder 5, the connecting seat 63 comprises a side plate 631 which is connected with two side walls of the square hole 61 of the reinforcing pad 6 and is perpendicular to the reinforcing pad 6 and a bridging plate 632 which is connected with the side plate 631, arc-shaped positioning pieces 633 are symmetrically arranged on two sides of the bridging plate 632, and a plurality of through holes 634 with different shapes are arranged on the bridging plate 632; arc cavities 551 are arranged on two sides of a concave groove 55 in the swing block 51 of the movable cutter seat 5, the positioning sheet 633 is arranged in the arc cavities 551, and a protruding linkage block 552 matched with the through hole 634 in shape is arranged at the bottom of the concave groove 55 and is arranged in the corresponding through hole 634. Through adding in bridging board 632 both sides and establishing arc spacer 633, when moving blade holder 5 when the assembly, utilize arc spacer 633 and concave groove 55 both sides arc chamber 551 to cooperate, can be quick will move blade holder 5 and strengthen the connecting seat 63 accurate positioning of pad 6, improve the assembly benefit. And a plurality of link blocks 552 having different cross sections at the bottom of the concave groove 55 are used and inserted into the corresponding through holes 634 of the bridge plate 632. When the driving mechanism drives the movable knife holder 5 to swing back and forth, the force of the left-right swing is dispersed to the linkage blocks 552 and is not concentrated on the positioning columns 54 on the supporting sheets 53, so that the positioning columns 54 are effectively prevented from being broken due to excessive stress, and the use safety and the working stability of the movable knife assembly are improved.

In order to ensure that the end surfaces of the cutting teeth 31 in the movable blade 2 and the cutting teeth 31 in the stationary blade 1 are always attached and the hair cutting performance is ensured, at least two spring columns 56 are arranged on the support sheet 53 opposite to the other end surface provided with the positioning column 54, the spring columns 56 are respectively sleeved with a top pressure spring 7, the other end of the top pressure spring 7 is pressed against the stationary blade base 8, so that the movable blade base 5 presses the reinforcing pad 6 and the cutting teeth 31 of the movable blade 2 are attached to the end surfaces of the cutting teeth 31 of the stationary blade 1; two ends of the static knife holder 8 are respectively connected with the static knife blade 1 and fixed with the movable knife holder 5, the reinforcing pad 6 and the movable knife blade 2 which can swing back and forth and are fixed between the static knife blade 1 and the static knife holder 8. By additionally arranging the jacking spring 7 between the supporting sheet 53 and the static blade seat 8, one end of the jacking spring 7 is abutted against the static blade seat 8, and the other end of the jacking spring 7 is abutted against the supporting sheet 53, so that the elastic force of the jacking spring 7 can press the supporting sheet 53 of the movable blade seat 5 to apply the extrusion force of the spring to the reinforcing pad 6 and the movable blade 2, the cutting teeth 31 of the movable blade 2 and the cutting teeth 31 of the static blade 1 are always in an end surface joint state, and the hair trimming performance of the blade head assembly is ensured.

In order to facilitate the assembly of the cutter head assembly and the working stability of the movable blade 2 and the movable cutter holder 5, the two ends of the fixed blade 1 are respectively provided with a threaded seat 9 with a threaded hole, and each threaded seat 9 is respectively fixedly connected with the inner surface of the fixed blade 1; the periphery of the static cutter seat 8 is sealed and internally provided with a containing cavity, two ends of the static cutter seat 8 are respectively provided with a screw hole 81, the static cutter seat 8 is in threaded connection with the threaded seat 9 on the static cutter blade 1 through a screw 82, the movable cutter seat 5 and the reinforcing pad 6 can be connected with the movable cutter blade 2 in a reciprocating swinging mode, and the swinging groove 52 of the movable cutter seat 5 is arranged outside the static cutter seat 8. The screw seats 9 are respectively arranged at two ends of the inner surface of the fixed blade 1, and the fixed blade seat 8 and the fixed blade 1 can be fixed by connecting the screw 82 and the screw seats 9 during assembly. Different in the slot that inserts quiet blade holder 8 with two of traditional quiet blade 1, this kind of installation is simple structure not only, easily production assembly, but also can prevent effectively that quiet blade 1 from following the slot horizontal slip of quiet blade holder 8, guarantees the hair pruning performance of tool bit subassembly. The periphery of the static cutter seat 8 is sealed, an accommodating cavity is formed inside the static cutter seat 8, the reinforcing pad 6, the movable cutter seat 5 and the jacking spring 7 can be arranged in the accommodating cavity in a left-right reciprocating swinging mode in the assembling process, and the swinging groove 52 of the movable cutter seat 5 can penetrate through the static cutter seat 8 to be in linkage connection with a driving mechanism in the shaving tool.

In order to improve the hair trimming effect of the cutter head assembly, a technical scheme of a static blade is also provided on the basis of the cutter head assembly, as shown in fig. 13-16, the static blade specifically comprises a substrate 11, a plurality of cutting teeth 31 are arranged at the edge of at least one side of the substrate 11 side by side to form a cutter tooth group 3, the existing static blade 1 basically adopts open type cutting teeth 31, namely, the tooth tops are independent individuals, the tooth roots are connected with the substrate 11, and the cutter tooth group 3 consists of a plurality of cutting teeth 31 which are arranged at intervals in a single direction. Because the inner and outer end surfaces of the existing cutting tooth 31 are on the same plane or curved surface as the inner and outer end surfaces of the substrate 11, the thickness of the cutting tooth 31 is the same as the thickness of the substrate 11. In order to ensure the working strength of the static blade 1, the thickness of the existing static blade 1 is basically more than 0.3mm, so that the thickness of the cutting teeth 31 is relatively thick although the strength requirement can be met. During the hair trimming operation, the residual length of the hair roots on the skin is relatively long under the influence of the thickness of the cutting teeth 31, and the hair cannot be completely shaved, so that the use requirement of a user cannot be met. In order to solve the technical problem, the technical scheme is that the cutter tooth group 3 is integrally sunken along the outer surface of the base sheet 11 by a stamping process, so that the outer surface of each cutting tooth 31 is lower than the outer surface of the base sheet 11, the inner surface of each cutting tooth protrudes out of the inner surface of the base sheet 11, and a stepped surface 12 is formed between the tooth root of each cutting tooth 31 and the outer surface and the inner surface of the base sheet 11. Then, grinding operation is carried out on the inner surface of the cutter tooth group 3 protruding out of the inner surface of the substrate 11 by utilizing a grinding process to form a cutting working surface 13, and the thickness of each cutting tooth 31 in the cutter tooth group 3 is smaller than that of the substrate 11, so that the integral flatness of the cutting working surface 13 of the cutter tooth group 3 can be greatly improved, the friction resistance between the movable blade 2 and the static blade 1 is reduced during use, and the temperature rise of the static blade 1 and the movable blade 2 is reduced; meanwhile, the thickness of each cutting tooth 31 in the cutter tooth group 3 can be reduced to the greatest extent. It is well known that the thinner the thickness of the stationary blade 1, the shorter the residue of the hair roots on the skin when the hair is shaved, and the better the hair shaving effect. And because only the cutter tooth group 3 in the static blade 1 is ground to reduce the thickness of each cutting tooth 31 in the cutter tooth group 3, and the substrate 11 is not affected, the working strength of the static blade 1 can be effectively ensured.

As shown in fig. 15, in order to reduce the production difficulty of the stationary blade 1, in the actual grinding process, the inner surface of the cutter tooth group 3 and the step surface 12 connected with the inner surface of the cutter tooth group 3 are ground together to form an integral cutting working surface 13 slightly higher than the inner surface of the substrate 11, so that the assembly of the movable blade 2 is facilitated during the assembly, the contact area between the movable blade 2 and the stationary blade 1 is reduced, the friction is reduced, and the temperature rise is reduced. And secondly, the step difference surface 12 of the tooth root of the cutting tooth 31 in the cutter tooth group 3 can be gradually widened from narrow to wide, so that stress fracture of the cutting tooth 31 caused by stress concentration at the joint of the tooth root of each cutting tooth 31 and the step difference surface 12 is avoided, and the working strength and the service life of each cutting tooth 31 in the cutter tooth group 3 are ensured.

Of course, during the grinding operation, the thickness of each cutting tooth 31 may be reduced by grinding only the inner surface of each cutting tooth 31 in the cutter tooth group 3, as shown in fig. 16, but the grinding operation may make the stepped surface 12 connecting the tooth roots of each cutting tooth 31 higher than the cutting surface 13 of the cutter tooth group 3, which is not only disadvantageous for the assembly of the movable blade 2. Furthermore, the connection between the tooth root of each cutting tooth 31 of the cutter tooth group 3 and the stepped surface 12 is also easily broken, and the service life of the stationary blade 1 is accordingly reduced, so that the integral grinding of the inner surface of the cutter tooth group 3 is a preferred embodiment.

For improving the hair shaving effect of the static blade 1, the thickness T of the blade tooth group₃(it can also be regarded as the thickness of each cutting tooth 31 on the stationary blade 1) is greater than or equal to 0.08mm and less than the substrate thickness T₄. Thickness T of substrate₄Between 0.3mm and 2 mm. In actual use, the selection can be carried out according to different purposes. Substrate thickness T, for example for a static blade 1 in the shaving field₄Preferably between 0.35 and 0.5 mm. Substrate thickness T of a stationary blade 1 for hair dressing applications₄The size of the blade can be increased correspondingly and is basically more than 0.5mm, and the specific selection can be determined according to the structure of the static blade 1. Substrate thickness T of a stationary blade 1 for shaving applications in general₄Preferably, a 0.35mm sheet is used for processing, so that the working strength of the static blade 1 is ensured, and the production cost can be reduced to the maximum extent. Theoretical thickness T of cutter tooth group₃The thinner the stationary blade 1, the better the hair shaving effect. In order to avoid deformation or breakage of the cutting teeth 31 in the cutter tooth group 3, which would affect the shaving of hair, the thickness T of the cutter tooth group₃And may also depend on the hardness of the substrate 11.

For example:

when the hardness of the substrate 11 is between HRC52 and HRC55, the thickness T of the cutter tooth group₃(also can be considered as the thickness of each cutting tooth 31) is preferably 0.13mm + -0.03 mm. Therefore, the cutting teeth 31 are prevented from deforming, twisting or breaking when hairs enter the hair guide grooves adjacent to the cutting teeth 31, the working stability of each cutting tooth 31 is ensured, and the hair trimming effect is improvedAnd (5) fruit.

When the hardness of the substrate 11 is less than HRC52, the toughness of the substrate 11 is improved, and the thickness T of the cutter tooth group₃It is set to 0.10mm or less, so that the deformation, distortion or breakage of each cutting tooth 31 in the cutter tooth group 3 can be prevented.

When the hardness of the substrate 11 is greater than HRC55, the toughness of the substrate 11 is correspondingly reduced, but the brittleness of the substrate is correspondingly increased, and in order to prevent the cutting teeth 31 in the cutter tooth group 3 from cracking or breaking, the thickness T of the cutter tooth group can be correspondingly increased₃For example, setting thickness T of cutter teeth₃Is the thickness T of the substrate₄One-half, two-thirds or three-quarters of the amount of the blade to ensure the usability of the stationary blade 1.

Thickness T of cutter tooth group₃The selection can be flexibly set according to different materials and different hardness of the substrate 11, and the embodiment is not further limited.

In order to improve the fit of the static blade 1 to the skin during hair cutting and the comfort of the skin during hair shaving, the teeth 3 are recessed downward along the outer surface of the substrate 11 by a depth T₅Less than the thickness T of the substrate₄. The depth T of the recess of the cutter tooth group 3₅Set less than the thickness T of the substrate₄When the inner surface of the cutter tooth group 3 is ground, the thickness T of the cutter tooth group can be reduced to the maximum degree₃Meanwhile, the supporting connection of the segment difference surface 12 is utilized to ensure the working strength of each cutting tooth 31 in the cutter tooth group 3, and the service performance and the working stability of the static blade 1 are ensured. Moreover, due to the difference in height between the outer surface of the cutter tooth group 3 and the outer surface of the substrate 11 (it can also be regarded as the depth T of the depression of the cutter tooth group 3 along the outer surface of the substrate 11)₅) Less than the thickness T of the substrate₄When the outer surface of the cutter tooth group 3 is contacted with the skin, the outer surface of the substrate 11 can not generate the pushing feeling to the skin, so that the attaching degree and the use comfort of the static blade 1 and the skin can be effectively improved.

The thinner the thickness of each cutting tooth 31 in the cutter tooth group 3 is, the greater the amount of grinding of the inner surface of each cutting tooth 31 in the cutter tooth group 3 is. Conversely, as the thickness of each cutting tooth 31 in the set 3 is thicker, the amount of grinding of the inner surface of each cutting tooth 31 in the set 3 is less. Therefore, in the actual production process, the cutter tooth group 3 is along the surface of the substrate 11Depth of depression T of face₅Can also be according to the thickness T of the cutter tooth group₃And then.

For example:

required thickness T of cutter tooth group₃When the thickness is less than 0.10mm, the grinding amount of the inner surface of each cutting tooth 31 in the cutter tooth group 3 is relatively large, and in order to ensure the working strength of each cutting tooth 31 in the cutter tooth group 3, the depth T of the recess of the cutter tooth group 3 along the outer surface of the substrate 11 can be properly reduced₅(the optimum recess depth is less than half the thickness of the substrate 11). When the inner surface of the cutter tooth group 3 is ground, the stepped surface 12 is subjected to less grinding, so that the stepped surface 12 can be used for supporting the tooth root of each cutting tooth 31 in the cutter tooth group 3, and the working strength of each cutting tooth 31 in the cutter tooth group 3 is ensured.

When the thickness T of the cutter tooth group is required₃Above 0.20mm, the amount of grinding of the inner surface of each cutting tooth 31 in the set 3 is relatively small. At this time, the depth of the recess of the cutter tooth group 3 along the outer surface of the substrate 11 can be increased, for example, the depth of the recess is greater than the thickness of the substrate 11 or greater than two thirds, one half, etc. of the thickness of the substrate 11, and the working strength of each cutting tooth 31 in the cutter tooth group 3 can also be ensured. But with a corresponding increase in the height difference between the outer surface of the set of cutter teeth 3 and the outer surface of the base plate 11. When the outer surface of the cutter tooth group 3 contacts with the skin, the outer surface of the substrate 11 can generate a pushing force on the skin, which can affect the fit between the cutter tooth group 3 and the skin, and the skin contact feeling is relatively poor. Therefore, it is preferred that the depth of depression of tooth set 3 down substrate 11 be less than the thickness of substrate 11.

In order to avoid the squeezing feeling of the static blade 1 on the skin surface when the static blade 1 contacts the skin and influence the hair shaving smoothness and the skin comfort of the static blade 1, the section difference surface 12 of the outer surface of the substrate 11 connected with the cutter tooth group 3 is inclined, and the inclination angle K is less than or equal to 75 degrees. The inclination angle K is an angle between an extension line of a joint between the outer surface of the substrate 11 and the step surface 12 as a reference line and the step surface 12, or an angle between an extension line of a joint between the outer surface of the cutter tooth group 3 and the step surface 12 as a reference line and the step surface 12. From the viewpoint of comfort of the stationary blade 1, the more gentle the inclination angle K of the stepped surface 12, the smoother the movement of the outer surface of the blade tooth group 3 and the outer surface of the base plate 11 along the skin surface during hair cutting. Therefore, the inclination angle K of the stepped surface 12 is preferably 15 ° ± 1 °, so that the outer surface of the cutter tooth group 3 and the outer surface of the substrate 11 can be connected relatively gently, when the outer surface of the cutter tooth group 3 contacts with the skin and moves along the skin surface for shaving, the outer surface of the substrate 11 does not generate a pushing feeling on the skin, the skin comfort when the static blade 1 is used is improved, and the hair trimming smoothness of the static blade 1 is ensured. Of course, the inclination angle K of the stepped surface 12 may be set to be larger or smaller, for example, the inclination angle K may be set to be 50 ° or larger, so that the inclination slope of the stepped surface 12 is steeper. When the outer surface of the cutter tooth group 3 is attached to the skin, when the outer surface of the substrate 11 moves along the skin surface along with the cutter tooth group 3, a squeezing force is generated on the skin surface under the influence of the height difference, so that the smoothness of hair removal is influenced, and the comfort of the skin is reduced. If the inclination angle K of the stepped surface 12 is set to be smaller, for example, the inclination angle K is smaller than 5 ° or less, the distance between the tooth root of each cutting tooth 31 in the cutting tooth group 3 and the substrate 11 will be correspondingly increased, and after the inner surface of the cutting tooth group 3 is ground, the inner surface of the stepped surface 12 will be removed together, which will seriously affect the working strength of each cutting tooth 31 in the cutting tooth group 3 during use. Next, the stepped surface 12 may be made vertical without considering the skin contact feeling, but since the vertical stepped surface 12 is provided and the mold release is not easy at the time of press forming, it is a preferable embodiment to set the inclination angle K of the stepped surface 12 to 15 ° ± 1 °.

The existing static blade 1 basically adopts an open type cutting tooth 31, namely, the tooth tip is an independent body, the tooth root is connected with the substrate 11, one side of the cutter tooth group 3 is an open type structure, and the other three sides are respectively connected with the substrate 11 through a segment difference surface 12. In order to ensure the working strength of the cutter tooth group 3, the segment difference surface 12 comprises a first segment difference surface 121, a second segment difference surface 122 and a third segment difference surface 123, the first segment difference surface 121 enables the tooth root of each cutting tooth 31 in the cutter tooth group 3 to be connected with the substrate 11 into a whole, the second segment difference surface 122 and the third segment difference surface 123 enable two ends of the cutter tooth group 3 to be connected with the substrate 11 respectively, and the distance T between the joints of the second segment difference surface 122 and the third segment difference surface 123 and the substrate 11 and the edge distance T between the joints of the two ends of the substrate 11 and the edges of the two ends of the substrate 11 respectively₆3mm to 5mm. The second stage difference surface 122 and the third stage difference surface123 are spaced from the edges of the substrate 11 by a distance T₆The control is 3 mm-5 mm, and in the use process, the edge parts at two ends of the reserved substrate 11 with 3 mm-5 mm can be effectively utilized to support the cutter tooth group 3, so that the distortion of each cutting tooth 31 in the cutter tooth group 3 is prevented in use, and the use performance and the working stability of the static blade 1 are improved. If no edge part with the thickness of 3 mm-5 mm is reserved at the two ends of the substrate 11, the two ends of the cutter tooth group 3 directly cover the two ends of the substrate 11, so that the cutter tooth group 3 can only be connected with the substrate 11 by using the first section difference surface 121, and when the cutter tooth group is used, each cutting tooth 31 in the cutter tooth group 3 is very easy to distort and deform, and the service performance and the working stability of the static blade 1 are seriously influenced. Of course, the margin of the two ends of the substrate 11 may be set larger, for example, 8mm, 10mm or more, but the larger margin will correspondingly increase the material cost of the substrate 11 or shorten the length of the cutter tooth group 3 to reduce the number of the cutting teeth 31, thereby reducing the shaving efficiency. Therefore, the optimal embodiment is that the reserved distance between the two end edge parts of the substrate 11 is 3 mm-5 mm, so that the material cost of the substrate 11 can be reduced to the greatest extent while the working strength of each cutting tooth 31 of the cutter tooth group 3 is ensured. The inclination angles of the second section difference surface 122 and the third section difference surface 123 are the same, and the inclination angles of the second section difference surface 122 and the third section difference surface 123 are equal to, larger than or smaller than the inclination angle K of the first section difference surface 121. In order to reduce the manufacturing difficulty of the stamping die, the inclined angles of the first section difference surface 121, the second section difference surface 122 and the third section difference surface 123 are preferably the same. Of course, the setting may also be customized according to the requirements of the user, and the specific setting is not further limited in this embodiment.

In order to improve the fit degree of the static blade 1 and the skin, the cross section of the outer surface of the substrate 11 is arc-shaped, and the inner surface is a horizontal plane and is lower than the cutting working surface 13 of the cutter tooth group 3. The outer surface of the substrate 11 is designed to be the cambered surface, so that the cambered surface of the substrate 11 can be better attached to the skin when in use, and the shaving effect and the shaving benefit of the static blade 1 are improved. Of course, the outer surface of the substrate 11 may be set to a horizontal surface as desired to accommodate the overall style of different shaving tools or the aesthetic requirements of different users. The specific setting can be determined according to actual needs or user requirements.

For improving the skin feeling of the stationary blade 1 in useThe side of the base plate 11 where the cutter tooth group 3 is arranged is provided with a bending edge with the height less than or equal to the thickness of the base plate 11, so that the end part of each cutting tooth 31 in the cutter tooth group 3 forms a tooth bulge 14. When the cutting teeth are cut, the teeth 14 are formed at the end of each cutting tooth 31, and the tooth height T is set by the bent edge at the edge of one side of the substrate 11 where the cutting tooth group 3 is provided₇Less than or equal to the substrate thickness T₄. Of course, the tooth-like protrusions 14 may be formed without using a hemming process, for example, by increasing the thickness of the base sheet 11 (e.g., the thickness is greater than 0.5 mm), and when the inner surface of the tooth group 3 is ground to cut the working surface 13, the tooth-like protrusions 14 may be formed by controlling the distance between the grinding wheel and the edge of the base sheet 11. But the thickness T of the substrate is obtained by adopting the grinding process to process the tooth convex 14 structure₄The requirement of thicker and significantly increased grinding amount not only increases the material cost of the substrate 11, but also reduces the processing efficiency of the cutting working surface 13 of the cutter tooth group 3, so that the formation of the tooth protrusion 14 by using the flanging process is a preferred embodiment. The purpose of arranging the tooth convex 14 structure at the end part of the cutting tooth 31 is mainly to prevent the end part of the cutting tooth 31 from stabbing the skin and improve the use safety of the static blade 1. And the teeth projections 14 are used for stimulating the skin, particularly when shaving the head, the teeth projections 14 at the ends of the cutting teeth 31 can play a role similar to a comb, stimulate the nerves of the head, accelerate the blood circulation and blood oxygen supply of the skin of the head, so that more comfortable skin feeling is generated, and the use comfort of the static blade 1 is improved.

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

1. A cutter head component with a limiting mechanism comprises a fixed blade and a movable blade, wherein the fixed blade and the movable blade are provided with cutting teeth; the cutting tooth of the movable blade is attached to the end face of the cutting tooth of the fixed blade under the action of external force, and the movable blade can swing back and forth along the limiting mechanism under the driving of the external force.

2. The cutter head component with the limiting mechanism as claimed in claim 1, wherein the limiting mechanism is a flat limiting piece fixed on the inner surface of the static blade; the movable blade is provided with a limiting hole, the length of the limiting hole is larger than that of the limiting piece, and the side walls of the two sides of the limiting hole are in contact with the side walls of the two sides of the limiting piece, so that the movable blade can swing back and forth along the limiting piece under the driving of external force.

3. The cutter head component with the limiting mechanism according to claim 2, wherein a limiting block is provided on the side wall of the limiting piece, and the limiting block makes the limiting piece and the side wall of the limiting hole form line contact or point contact.

4. The cutter head component with the limiting mechanism according to claim 3, wherein at least two arc-shaped blocks protruding from the side walls of the limiting plate are respectively arranged on the side walls of the limiting plate, the arc-shaped middle points of the arc-shaped blocks are tangent to the side walls of the limiting hole to form vertical line contact, and the arc-shaped blocks form the limiting block.

5. The cutter head component with a limiting mechanism according to claim 3, wherein at least one triangular block with a triangular shape in a protruded sectional view is provided on both side walls of the limiting piece, one of the acute angle edges of the triangular block is parallel to and in line contact with both side walls of the limiting hole, and the triangular block constitutes the limiting block.

6. The cutter head component with the limiting mechanism according to claim 5, wherein the length of the triangular block is the same as that of the limiting piece.

7. The cutter head component with the limiting mechanism according to claim 5, wherein at least two triangular blocks are respectively arranged on the side walls of the two sides of the limiting piece at intervals, each triangular block is respectively fixed on the two ends of the side wall of the limiting piece, and one acute angle edge of each triangular block is parallel to the side wall of the limiting hole and forms line contact.

8. The cutter head component with the limiting mechanism according to claim 3, wherein at least two conical bodies are respectively arranged on the side walls of the limiting piece at both sides, the vertex of each conical body is respectively in point contact with the corresponding side wall of the limiting hole, and the conical bodies form the limiting block.

9. The cutter head component with a limiting mechanism according to claim 2, wherein the thickness T of the limiting sheet₁Thickness T of moving blade₂The following relation is satisfied:

0.5T₂≤T₁≤2T₂。

10. the cutter head component with the limiting mechanism is characterized by further comprising a movable cutter seat, wherein the movable cutter seat is provided with a swinging block, the lower end face of the swinging block is provided with a swinging groove, and the swinging groove is in linkage connection with the driving mechanism; the two sides of the swing block are respectively provided with a support sheet, the upper end surface of each support sheet is provided with at least one positioning column, and each positioning column is respectively inserted into the positioning hole of the movable blade so that the movable blade and the movable blade seat are synchronously linked.

11. The cutter head component with the limiting mechanism is characterized in that a reinforcing pad is arranged between the movable cutter blade and the movable cutter seat, a square hole which is larger than or equal to the limiting hole is formed in the reinforcing pad, and the reinforcing pad is attached to the upper end face of the movable cutter blade to enable the square hole to be coincident with the limiting hole; a cylindrical hole with the same diameter as the limiting hole is arranged at the corresponding position of the reinforcing pad; and the positioning column arranged on the supporting sheet penetrates through the cylindrical hole and is inserted into the positioning hole to synchronously link the movable cutter holder, the reinforcing pad and the movable cutter blade.

12. The cutter head component with the limiting mechanism according to claim 11, wherein the middle of the reinforcing pad is provided with a connecting seat having a width smaller than the length of the square hole and crossing the square hole, the swinging block is provided with a concave groove opposite to the swinging groove and on one end face, and the concave groove is covered outside the connecting seat to enable the reinforcing pad to be synchronously linked with the movable cutter seat.

13. The cutter head component with the limiting mechanism according to claim 12, wherein the connecting base comprises a side plate which is connected with two side walls of the square hole of the reinforcing pad and is perpendicular to the reinforcing pad and a bridging plate which is connected with the side plate, arc-shaped positioning pieces are symmetrically arranged on two sides of the bridging plate, and a plurality of through holes with different shapes are arranged on the bridging plate; arc-shaped cavities are arranged on two sides of a concave groove in a swinging block of the movable cutter seat, the positioning piece is arranged in the arc-shaped cavities, and a protruding linkage block matched with the through hole in shape is arranged at the bottom of the concave groove and is arranged in the corresponding through hole.

14. The cutter head assembly with the limiting mechanism according to claim 10, wherein at least two spring posts are arranged on the support sheet opposite to the other end surface provided with the positioning post, top pressure springs are respectively sleeved on the spring posts, and the other ends of the top pressure springs are abutted against the fixed cutter base to enable the movable cutter base to press the reinforcing pad and enable the cutting teeth of the movable cutter to be attached to the end surfaces of the cutting teeth of the fixed cutter; two ends of the static knife seat are respectively connected with the static knife blade to fix the movable knife seat, the reinforcing pad and the movable knife blade which can be fixed between the static knife blade and the static knife seat in a reciprocating swing mode.

15. The cutter head component with the limiting mechanism according to claim 14, wherein the two ends of the fixed blade are respectively provided with a threaded seat with a threaded hole, and each threaded seat is fixedly connected with the inner surface of the fixed blade; the periphery of the static cutter holder is sealed, the inside of the static cutter holder is provided with a containing cavity, two ends of the static cutter holder are respectively provided with a screw hole, the static cutter holder is in threaded connection with a threaded seat on the static cutter blade through screws, the dynamic cutter holder and the reinforcing pad can swing in a reciprocating mode and are connected with the dynamic cutter blade, and a swing groove of the dynamic cutter holder is arranged outside the static cutter holder.

16. A stationary blade for use in the cutter head assembly as claimed in any one of claims 1 to 15, comprising a substrate, wherein the cutting teeth are provided with a plurality of cutting teeth arranged side by side at least at one edge of the substrate to form a cutting tooth group, the cutting tooth group is recessed downwardly along an outer surface of the substrate so that an outer surface of each cutting tooth in the cutting tooth group is lower than the outer surface of the substrate, the inner surface protrudes beyond the inner surface of the substrate, and the edges of the cutting tooth group are connected with the substrate by a step difference surface; the inner surface of the cutter tooth group is provided with a cutting working surface, and the thickness of each cutting tooth in the cutter tooth group is smaller than that of the substrate.

17. The stationary blade as set forth in claim 16, wherein said set of teeth has a thickness greater than or equal to 0.08mm and less than the thickness of the substrate.

18. The stationary blade as set forth in claim 16 wherein said set of teeth are recessed downwardly along the outer surface of the base sheet to a depth less than the thickness of the base sheet.

19. The stationary blade as recited in claim 16, wherein said step difference surface of the outer surface of the base plate to which the sets of teeth are attached is inclined at an angle of 75 ° or less.

20. The stationary blade as recited in claim 16, wherein the stepped differential surface comprises a first stepped differential surface, a second stepped differential surface and a third stepped differential surface, the first stepped differential surface connects the tooth root of each cutting tooth of the cutter tooth group with the substrate, the second stepped differential surface and the third stepped differential surface connect two ends of the cutter tooth group with the substrate, respectively, and the distance between the connection point of the second stepped differential surface and the substrate and the edge of the two ends of the substrate is 3mm to 5mm.

21. The stationary blade as set forth in claim 20, wherein the second and third segment difference surfaces are inclined at the same angle as, greater than, or less than the angle of inclination of the first segment difference surface.

22. The stationary blade according to claim 16, wherein the base sheet has an arcuate outer surface cross-section and an inner surface that is horizontal and below the cutting face of the set of teeth.

23. The stationary blade according to claim 16, wherein the outer and inner surfaces of said base sheet are horizontal and the inner surface is lower than the cutting face of the set of teeth.

24. The stationary blade as set forth in claim 16, wherein said base sheet is provided with a bent edge having a height less than or equal to the thickness of the base sheet at a side thereof where said set of teeth is provided, so that the end of each cutting tooth in said set of teeth is formed into a tooth-like protrusion.