CN117507013A - Cutting blade, reciprocating razor head and razor - Google Patents

Abstract

The invention relates to a cutting blade, a reciprocating razor head and a razor, which are characterized in that an inverted U-shaped groove is arranged on the straight line edge of a substrate to form supporting feet on two sides of the substrate, and at least one vent hole penetrating through the substrate is arranged between an arc-shaped cutting edge and the inverted U-shaped groove. The invention has the beneficial effects that the inverted U-shaped groove and the vent hole are arranged on the substrate, and the inverted U-shaped groove is utilized to reduce the surface area of the substrate and shorten the depth of the knife groove between the adjacent cutting blades; secondly, through the vent holes, when each cutting blade is driven by the motor of the shaver to swing back and forth along the static cutter mesh, each cutting blade can squeeze air to form air flow. After the beard is sheared by the cutting blade, the viscosity of grease secreted by skin can be overcome under the dual effects of vibration sense and air flow, the broken beard is prevented from being adhered to the side wall of the cutting blade under the action of the viscosity of the grease, the beard is accelerated to be discharged from the cutter groove, the discharging benefit of the broken beard is improved, and the cutter groove is prevented from being blocked when the vibration sense generated by the reciprocating swing of the cutting blade is weaker.

Description

Cutting blade, reciprocating razor head and razor

Technical Field

The invention relates to a cutting blade for trimming beard, in particular to a cutting blade, a reciprocating razor head and a razor, which are mainly applied to the field of personal care products such as shavers or shavers.

Background

The applicant claims the name in 2021, 3 and 29: prevent sword that moves of sword groove jam, patent number: 2021103339718, bulletin number: CN113001596a, the technical scheme adopted by the movable cutter is that a notch is arranged on each cutter blade, the depth of the cutter groove between adjacent cutter blades is shortened by using the notch, the time for passing the broken beards through the cutter groove is shortened, and the broken beards are accelerated to be discharged from the cutter groove, so that the technical purpose of preventing the cutter groove from being blocked is achieved. By adopting the structure, the viscosity of grease is overcome mainly by the vibration sense generated by driving the movable cutter to swing back and forth by the shaver motor, and broken beard is prevented from adhering to the side wall of the cutter to block the cutter groove. Although the depth of the cutter groove between adjacent blades can be shortened by providing the notch groove on the blade, the broken beard is prevented from adhering to the side wall of the cutter groove under the vibration feeling generated when the movable cutter reciprocates. However, the vibration sense generated by the reciprocating swing of the movable cutter is affected by the rotating speed of the motor, the rotating speed of the motor is affected by the change of the battery power, the battery voltage is reduced when the battery power is reduced, the rotating speed of the motor is reduced, the vibration sense generated by the reciprocating swing of the movable cutter is reduced correspondingly, the broken beards adhered to the side wall of the cutter groove cannot be vibrated and discharged out of the cutter groove, and the discharging benefit of the broken beards in the cutter groove is reduced, even the cutter groove is blocked.

Disclosure of Invention

In order to solve the above technical problems; the invention provides a cutting blade, a reciprocating razor head and a razor, wherein the cutting blade is additionally provided with an inverted U-shaped groove and a vent hole, so that the depth of a cutter groove between adjacent cutting blades is shortened by utilizing the inverted U-shaped groove, meanwhile, when the vibration sense is weakened, the discharge of broken beards from the cutter groove can be quickened by utilizing the air flow passing through the vent hole, the discharge benefit of the broken beards is improved, and the hair trimming performance and the working stability of the razor head are ensured.

In order to solve the technical problems, the invention adopts the technical proposal that the cutting blade comprises a substrate with an arc edge and a straight line edge, and an arc cutting edge is formed at the edge of the arc edge of the substrate; the straight line edge of the substrate is provided with an inverted U-shaped groove to form supporting legs on two sides of the substrate, and at least one vent hole penetrating through the substrate is arranged between the arc-shaped cutting edge and the inverted U-shaped groove.

Preferably, a plurality of ventilation holes are arranged between the arc-shaped cutting edge and the inverted U-shaped groove at intervals of arcs or straight lines with the same diameter or different diameters, and each ventilation hole does not exceed two ends of the arc-shaped cutting edge.

Preferably, the substrate is semicircular, extension sheets with integrated structures are respectively arranged below the supporting legs of the substrate, so that the whole substrate is in an inverted U shape, and each extension sheet is provided with a limiting hole.

Preferably, the distance between the bottom of the inverted U-shaped groove and the highest point of the arc-shaped edge is H based on the highest point of the arc-shaped edge of the substrate, wherein H is greater than or equal to one quarter of the diameter of the substrate.

Preferably, the edges of the arc-shaped edges of the two sides of the substrate are provided with triangular grooves which are recessed inwards, so that the edges of the arc-shaped edges of the two sides of the substrate form an acute angle to form an arc-shaped cutting edge, and the arc length of the arc-shaped cutting edge is smaller than 150 degrees.

The applicant also provides a technical scheme of the reciprocating razor head on the basis of the cutting blades, which comprises a plurality of the cutting blades and movable blade holders for fixing the cutting blades, wherein each cutting blade is fixedly arranged on the movable blade holders at intervals along the length direction of the movable blade holders and connected into a whole, so that knife grooves are respectively formed between the adjacent cutting blades; the whisker arranging groove is arranged in the movable cutter seat, the whisker arranging groove is vertically communicated when any one of the two side faces of the driven cutter seat is seen in the orthographic projection direction, and the cutter grooves among the cutting blades are respectively communicated with the whisker arranging groove; when the orthographic projection direction of any end face of the two ends of the driven cutter seat is seen, the inverted U-shaped groove in each cutting blade is combined with the whisker arranging groove to form an air flow channel penetrating the two ends of the driven cutter seat.

Preferably, the movable cutter holder comprises two side plates which are arranged at intervals, a whisker arranging groove is formed between the two side plates, and extension sheets in each cutting blade are respectively inserted into the corresponding side plates and are connected and fixed into a whole by using a limiting hole, so that a substrate in each cutting blade is positioned above the side plates; the width of the beard arranging groove is matched with that of the inverted U-shaped groove, and a plurality of connecting sheets which are arranged at intervals are arranged between the lower ends of the two side plates to connect the two side plates into a whole.

Preferably, baffles are respectively arranged at two ends of the two side plates, and each baffle is provided with a through hole which is communicated with the whisker arranging groove to form an inlet and a outlet of the airflow channel, and the cross section area of the through hole is not less than 0.5mm ² 。

Preferably, the diameter of the substrate in at least one of the plurality of cutting blades is greater than the width of the two side plates, such that the outer side surfaces of the two extending blades extend beyond the outer side surfaces of the two side plates.

On the basis of the shaver head, a technical scheme of the shaver is also provided, the shaver comprises the reciprocating shaver head, and the reciprocating shaver head comprises the cutting blade.

The beneficial effects of the invention are as follows:

1. the straight line edge of the substrate is provided with the inverted U-shaped groove to enable the two sides of the substrate to form supporting feet, the inverted U-shaped groove arranged on the substrate is utilized to relatively reduce the surface area of the substrate, after the cutting blades are assembled, the depth of the cutter groove between the adjacent cutting blades is shortened, meanwhile, under the driving of a motor in the shaver, the vibration sense of the arc-shaped cutting edge on the substrate is relatively strong, when the beard stretches into the arc-shaped cutting edge of the static cutter net to be sheared, the time that the beard passes through the cutter groove is greatly shortened, the beard falls into the beard arranging groove from the cutter groove and is discharged, and therefore the beard is prevented from blocking the cutter groove to influence the hair trimming performance and trimming benefit of the cutting blades.

2. At least one ventilation hole penetrating through the substrate is arranged between the arc-shaped cutting edge and the inverted U-shaped groove, and when each cutting blade is driven by a motor of the shaver to swing back and forth along the static cutter net, each cutting blade can squeeze air to form air flow. When the rotating speed of the motor is reduced, the vibration sense generated by the reciprocating swing of the cutting blade is weakened and insufficient to shake the broken beard, the air flow can pass through the vent holes arranged between the arc-shaped cutting edge and the inverted U-shaped groove along the reciprocating swing direction of the cutting blade, so that the cyclone formed in the cutter groove between the adjacent cutting blades applies extra force to the broken beard to overcome the viscosity of grease, the broken beard is discharged from the cutter groove, the discharging benefit of the broken beard is improved, and the cutter groove is prevented from being blocked when the vibration sense generated by the reciprocating swing of the cutting blade is weaker.

Drawings

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

FIG. 2 is a perspective view showing a structure of a cutter blade according to an embodiment of the present invention

Fig. 3 is a perspective view showing a first embodiment of a reciprocating razor head according to the present invention

Fig. 4 is a perspective view showing a structure of a second embodiment of a reciprocating razor head according to the present invention

FIG. 5 is an assembled cross-sectional view of a cutting blade in accordance with an embodiment of the present invention

FIG. 6 is a sectional view showing an assembled structure of a movable cutter holder according to an embodiment of the present invention

Fig. 7 is a bottom perspective view of a second embodiment of a movable cutter holder according to an embodiment of the present invention

FIG. 8 is a top perspective view of a second embodiment of a movable blade holder according to an embodiment of the present invention

Detailed Description

Embodiments of the present invention will be further described with reference to fig. 1 to 8:

as shown in fig. 1-2, the present invention is a cutting blade 1, comprising a substrate 11 having an arcuate edge 111 and a straight edge 112, wherein the arcuate edge 111 of the substrate 11 is attached to the inner surface of a stationary blade net (not shown), and when shaving, the beard extending into the stationary blade net is sheared by an arcuate cutting edge 12 formed at the edge of the arcuate edge 111 of the substrate 11, thereby achieving the purpose of hair trimming or shaving.

Because the hair is more or less adhered with grease secreted by the skin of a human body, the grease has certain viscosity, and meanwhile, the mass of the broken beard is light, and the broken beard is extremely easy to be adhered in the side wall of the cutter groove 3 under the viscosity of the grease after being sheared by the arc-shaped cutting edge 12 and entering the cutter groove 3; at the same time, the crushed beard forms are different and mostly in a curled shape, and the crushed beard which is shaved later is sequentially overlapped on the crushed beard which is adhered to the side wall of the cutter groove 3, so that the cutter groove 3 is blocked. Therefore, the inverted U-shaped grooves 13 are arranged on the straight edges 112 of the substrate 11 to form the supporting feet 14 on the two sides of the substrate 11, the surface area of the substrate 11 is relatively reduced by the inverted U-shaped grooves 13 arranged on the substrate 11, the depth of the cutter grooves 3 between the adjacent cutter blades 1 is shortened after the cutter blades 1 are assembled, meanwhile, the vibration sense at the arc-shaped cutting edges 12 on the substrate 11 is relatively strong under the driving of a motor in the shaver, when the beard stretches into the static cutter net arc-shaped cutting edges 12 to be sheared, the time of passing through the cutter grooves 3 can be greatly shortened, the beard is accelerated to fall into the beard discharging grooves 22 from the cutter grooves 3 and be discharged, and therefore the beard cutting blocking grooves 3 are prevented from affecting the hair trimming performance and trimming benefits of the cutter blades 1.

Secondly, as the electric quantity of the battery in the shaver decreases to reduce the rotation speed of the motor (when the electric quantity is reduced by less than 50%, the voltage of the battery decreases, and the voltage decreases to reduce the output power of the motor, so that the rotation speed of the motor is reduced), the vibration sense generated by the reciprocating swing of the cutting blade 1 is correspondingly weakened, and the broken beard adhered to the side wall of the cutting blade 1 cannot be shaken off and discharged from the cutter groove 3, so that the broken beard is easy to adhere to the side wall of the cutting blade 1 under the viscous action of grease to block the cutter groove 3. Based on this, at least one ventilation hole 15 penetrating the substrate 11 is provided between the arc-shaped cutting edge 12 and the inverted U-shaped groove 13, and each cutting blade 1 presses air to form an air flow when each cutting blade 1 is reciprocally swung along the stationary blade net by the motor of the shaver. When the vibration sense generated by the reciprocating swing of the cutting blade 1 is weakened and insufficient to shake the broken beard due to the reduction of the rotation speed of the motor, the air flow can pass through the vent holes 15 arranged between the arc-shaped cutting edge 12 and the inverted U-shaped groove 13 along the reciprocating swing direction of the cutting blade 1, so that the cyclone formed in the knife groove 3 between the adjacent cutting blades 1 applies extra force to the broken beard to overcome the viscosity of grease, the broken beard is discharged from the knife groove 3, the discharging benefit of the broken beard is improved, and the blocking of the knife groove 3 is prevented when the vibration sense generated by the reciprocating swing of the cutting blade 1 is weaker.

In actual production, the plurality of vent holes 15 are arranged, the vent holes 15 can be in an arc line (namely, the arc line segments of the arc-shaped cutting edge 12 are used as references) or are horizontally and linearly arranged between the arc-shaped cutting edge 12 and the inverted U-shaped groove 13 at intervals, and the best mode is that the plurality of vent holes 15 are positioned in the arc line segments of the arc-shaped cutting edge 12 and do not exceed the arc line segments of the arc-shaped cutting edge 12, so that when the beard extending into the static cutter net is sheared in the arc-shaped cutting edge 12, the beard can be immediately scattered by the formed cyclone to be discharged out of the cutter groove 3, and the adhesion of the beard to the side wall of the cutting blade 1 is avoided to the greatest extent.

For the production assembly of cutter blade 1, set up the substrate 11 into semi-circular, when cutter blade 1 when the assembly, semi-circular substrate 11 is better with the laminating degree of bending to be the quiet sword net internal surface of U-shaped to make quiet sword net U-shaped both sides possess hair pruning performance as well, promote the hair that advances of quiet sword net and hair pruning area. Of course, if the bending arc of the static blade net is large, the substrate 11 may be correspondingly set to be inferior-arc-shaped to match the bending arc. The specific setting can be set according to the actual curvature of the static cutter mesh. The inverted U-shaped grooves 13 are arranged in the substrate 11, so that the supporting legs 14 are respectively formed on two sides of the substrate 11, the depth of the cutter grooves 3 between the adjacent cutting blades 1 can be greatly shortened by arranging the inverted U-shaped grooves 13, the time for passing through the cutter grooves 3 is shortened, and the discharging benefit of the crushed beards is accelerated. However, the inverted U-shaped groove 13 may be changed to other shapes, such as a taper, a horn shape, or a trapezoid shape, according to the actual needs, and the present embodiment is not limited thereto.

In some embodiments, the base 11 is semicircular, and limited by the size of the cutting blade 1, if the inverted U-shaped groove 13 is provided too deeply, the strength of the base 11 is relatively weakened, and the base 11 is easily bent and deformed during hair cutting, reducing hair cutting performance. If the inverted U-shaped groove 13 is too shallow, the function of shortening the cutter groove 3 cannot be achieved; meanwhile, when the cutting blade 1 is assembled, the installation firmness of the cutting blade 1 cannot be ensured. Therefore, in order to ensure the working strength of the cutting blade 1 and facilitate the production and assembly, the supporting legs 14 on both sides of the inverted U-shaped groove 13 of the substrate 11 are respectively provided with an integrally structured extension piece 16, and in the assembly process, the extension piece 16 can be inserted into the movable blade holder 2 to at least enable most of the substrate 11 to be placed outside the movable blade holder 2, so that the connection firmness between the cutting blade 1 and the movable blade holder 2 is ensured, and the depth of the blade groove 3 is shortened to the greatest extent. Secondly, the substrate 11 is mostly arranged outside the movable knife holder 2, when the cutting blade 1 and the static knife net are matched to cut hair, the substrate 11 can generate a back and forth vibration effect, so that the sound generated during hair trimming is cleaner and more crisp, and the sense of a user during use is improved. In order to ensure the connection firmness between the extension piece 16 and the movable cutter seat 2, each extension piece 16 is provided with a limiting hole 17.

Because the depth of the cutter groove 3 between the adjacent cutting blades 1 is shortened by adding the inverted U-shaped groove 13 on the substrate 11, in order to balance the depth of the cutter groove 3 and the working strength of the cutting blades 1, the distance between the bottom of the inverted U-shaped groove 13 and the highest point of the arc-shaped edge 111 is H based on the highest point of the arc-shaped edge 111 of the substrate 11, wherein H is more than or equal to one quarter of the diameter of the substrate 11. If the H value is too large, the depth of the inverted U-shaped groove 13 is correspondingly increased, and the overall working strength of the cutting blade 1 is certainly reduced. On the other hand, if the H value is too small, the depth of the inverted U-shaped groove 13 is relatively shortened, and the technical purpose of accelerating the discharge of the crushed beard from the cutter groove 3 cannot be achieved, so that the embodiment of this example is a preferable embodiment.

When the cutting blade 1 is used for trimming beard, the arc-shaped cutting edges 12 arranged at the edges of the two sides of the arc-shaped edges 111 of the substrate 11 are matched with the inner surface of the static cutter mesh, and in order to improve the hair trimming performance of the cutting blade 1, the edges of the arc-shaped edges 111 at the two sides of the substrate 11 are provided with inward concave triangular grooves, so that the edges of the arc-shaped edges 111 at the two sides of the substrate 11 form acute angles to form the arc-shaped cutting edges 12, thereby improving the hair trimming performance of the cutting blade 1. Of course, the triangular groove can also be in a trapezoid shape, and the same purpose can be achieved only by ensuring that the arc-shaped cutting edges 12 forming acute angles at the edges of the arc-shaped edges 111 on both sides of the substrate 11, and the specific arrangement can be customized according to the requirements of users. In order to improve the hair trimming benefit, the arc length S of the arc-shaped cutting edge 12 is smaller than 150 degrees, that is, the straight extension line between the two ends of the arc-shaped cutting edge 12 forms an included angle, and the included angle is smaller than 150 degrees, because the arc-shaped edge 111 of the cutting blade 1 is attached to the inner surface of the static blade net after the static blade net is bent and formed, the larger the arc length of the arc-shaped cutting edge 12 is, the larger the area of the static blade net can be covered when the cutting blade 1 swings reciprocally along the inner surface of the static blade net, the hair trimming range can be enlarged relatively, and the hair trimming benefit is improved. However, due to some installation structures, the static knife net can only contact the skin in the central area of the bending part, and both sides are easily blocked and influenced by other knife groups, and have no hair feeding condition, so that the arc length of the arc-shaped cutting edge 12 can be adjusted according to practical situations, and the embodiment is not limited further.

The applicant also proposes a technical scheme of a reciprocating razor head based on the above-mentioned cutting blades 1, comprising a plurality of the above-mentioned cutting blades 1 and a movable blade holder 2 for fixing the cutting blades 1, wherein the movable blade holder 2 is fixedly connected with the movable blade holder 2 into a whole by inserting an extension piece 16 in each cutting blade 1 during production and assembly. In order to facilitate the discharge of the cut beard, the cutting blades 1 are arranged at intervals along the length direction of the movable cutter, so that cutter grooves 3 are respectively formed between the adjacent cutting blades 1, and the cut beard falls into the cutter grooves 3 and is discharged. Since the inverted U-shaped grooves 13 are provided in each cutting blade 1, the surface area of each cutting blade 1 is correspondingly reduced, and after the knife grooves 3 are formed between the adjacent cutting blades 1, the depth of the knife grooves 3 is affected by the inverted U-shaped grooves 13 and is correspondingly shortened. When the cutting blade 1 is matched with the static blade net to cut the beard which stretches into the static blade net, the time for passing through the cutter groove 3 can be reduced, under the double acting forces of vibration sense (when the motor drives the movable blade seat 2 to swing reciprocally, the movable blade seat 2 and each cutting blade 1 arranged on the movable blade seat 2 can vibrate, the intensity of vibration sense can be reduced along with the reduction of the rotating speed of the motor) and air flow (when the motor drives the movable blade seat 2 to swing reciprocally, each cutting blade 1 can squeeze air towards the swinging direction, so that the air flow is formed in the cutter head), the viscosity of grease can be effectively overcome, the crushed beard is prevented from being adhered to the side wall of the cutting blade 1 under the viscous acting force of the grease, the beard is accelerated to be discharged from the cutter groove 3, and the beard cutting performance is prevented from being influenced by the blockage of the crushed beard.

The broken beard is discharged from the cutter head, a beard discharging groove 22 is arranged in the movable cutter seat 2, the beard discharging groove 22 is vertically communicated when any one of two side faces of the movable cutter seat 2 is seen in the orthographic projection direction, and the cutter grooves 3 between the cutting blades 1 are respectively communicated with the beard discharging groove 22; by arranging the whisker arranging groove 22 in the movable cutter seat 2, the working strength of the movable cutter seat 2 can be effectively ensured, and the material cost of the movable cutter seat 2 can be reduced; after the broken beard enters the beard arranging groove 22 from the shaver groove 3, the broken beard can drop into a temporary storage cavity (not shown in the figure) enclosed between the reciprocating shaver head and the shaver body from the beard arranging groove 22 for temporary storage, and after the shaving is finished, the reciprocating shaver head is removed from the shaver body to clean the broken beard. Secondly, when the front projection direction of any end face of the two ends of the driven cutter holder 2 is seen, the inverted U-shaped grooves 13 in the cutting blades 1 and the beard discharging grooves 22 are combined to form air flow passages 4 penetrating the two ends of the driven cutter holder 2, the inverted U-shaped grooves 13 in the cutting blades 1 are communicated with the beard discharging grooves 22 to form the air flow passages 4 penetrating the two ends of the driven cutter holder 2, and when the motor in the shaver drives the driven cutter holder 2 to reciprocate, the cutting blades 1 can squeeze air to enable one end of the air flow driven cutter holder 2 to enter and discharge from the opposite end, so that the broken beard in the accelerating cutter holder 3 falls into the beard discharging grooves 22 from the cutter holder 3 and is discharged into a temporary storage cavity enclosed between the reciprocating shaver head and the shaver body through the beard discharging grooves 22 to be temporarily stored, and the beard trimming benefit of the reciprocating shaver head is prevented from being influenced by the blocking of the cutter holder 3.

In order to facilitate the production and processing of the movable cutter holder 2 and the assembly of the cutting blades 1, the movable cutter holder 2 comprises two side plates 21 which are arranged at intervals, whisker-arranging grooves 22 are formed between the two side plates 21, extension sheets 16 in each cutting blade 1 are respectively inserted into the corresponding side plates 21 and are connected and fixed into a whole by using limit holes 17, so that substrates 11 in each cutting blade 1 are positioned above the side plates 21, and the width of the whisker-arranging grooves 22 is matched with the groove width of the inverted U-shaped groove 13; when the extending pieces 16 in each cutting blade 1 are inserted into the corresponding side plates 21 to be connected with the side plates 21 into a whole, most of the substrates 11 in the cutting blade 1 can be positioned above the side plates 21, so that the height of the cutting blade 1 above the movable blade holder 2 is increased, the cross section of the cutting blade 1 covering the static blade net is enlarged during reciprocating swing cutting, and the trimming benefit of beard is improved; meanwhile, the cutting blade 1 can be increased to make the substrate 11 generate back and forth vibration to make a cleaner and more crisp sound after cutting the beard, so that the use sense of a user is improved. When the beard is sheared by the cutting blade 1 and falls into the cutter groove 3, the crushed beard can rapidly enter the beard discharging groove 22 from the cutter groove 3 under the dual actions of vibration sense and air flow of the cutting blade 1 and is discharged through the beard discharging groove 22, so that the crushed beard is prevented from blocking the cutter groove 3, and the working performance of the reciprocating razor head is ensured. In order to improve the working strength of the movable cutter holder 2, a plurality of connecting sheets 23 which are arranged at intervals are arranged between the lower ends of the two side plates 21 to connect the two side plates 21 into a whole. In the actual production process, each cutting blade 1 is integrally formed with the side plate 21 through secondary injection molding, namely the extending pieces 16 in the cutting blade 1 are arranged in an injection mold, so that each extending piece 16 is fixedly connected with the side plate 21, meanwhile, as the limiting holes 17 are formed in each extending piece 16, after the extending pieces 16 and the side plate 21 are integrally formed, the extending pieces 16 in the cutting blade 1 can be effectively prevented from being displaced under the limitation of the limiting holes 17, and the connection firmness of each cutting blade 1 and the movable blade holder 2 can be improved while the production and the processing are facilitated.

To ensure movement ofThe safety in utilization of the cutting blade 1 at the outermost side of the two ends of the cutter holder 2 is characterized in that the two end parts of the two side plates 21 are respectively provided with a baffle plate 24, the baffle plate 24 can be utilized to protect the cutting blade 1 at the outermost side of the movable cutter holder 2, the safety in utilization of the cutting blade 1 is improved, and damage caused by external factors touching the cutting blade 1 at the outer side is avoided. In order to ensure smooth air flow of the air flow channel 4 in the movable knife holder 2, through holes 25 are arranged in each baffle plate 24 and are communicated with the whisker arranging groove 22 to form an inlet and an outlet of the air flow channel 4, and the cross section of the through holes 25 is not smaller than 0.5mm ² . If the cross-sectional area of the through hole 25 is too small, the air flow in the air flow passage 4 in the movable blade holder 2 is affected, and the purpose of accelerating the discharge of the crushed beard out of the cutter groove 3 cannot be achieved, especially in the case that the vibration feeling of the movable blade holder 2 and each cutting blade 1 is weakened due to the reduction of the motor rotation speed caused by the reduction of the battery power in the shaver body.

In order to facilitate the integral molding of each cutting blade 1 and the movable blade holder 2, the diameter of the substrate 11 in at least one cutting blade 1 of the plurality of cutting blades 1 is larger than the width of the two side plates 21, so that the outer side surfaces of the two extending blades 16 exceed the outer side surfaces of the two side plates 21, and in the actual production process, the diameter of the substrate 11 in each cutting blade 1 is larger than the width of the two sides, so that the outer side surfaces of the extending blades 16 in the cutting blades 1 exceed the outer side surfaces of the two side plates 21, and therefore, when the secondary injection molding is performed, the parts of the extending blades 16 protruding out of the surfaces of the side plates 21 can be utilized to position, the stability of each cutting blade 1 during the secondary injection molding is ensured, and the equidistant arrangement of the cutting blades 1 on the side plates 21 of the movable blade holder 2 is ensured.

On the basis of the reciprocating razor head, the applicant also provides a technical scheme of the razor, wherein the razor comprises the reciprocating razor head, and the reciprocating razor head comprises the cutting blades.

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

Claims (10)

1. A cutting blade including a substrate (11) having an arcuate edge (111) and a straight edge (112), an arcuate cutting edge (12) being formed at an edge of the arcuate edge (111) of the substrate (11); the device is characterized in that an inverted U-shaped groove (13) is arranged on a linear edge (112) of a substrate (11) to form supporting legs (14) on two sides of the substrate (11), and at least one vent hole (15) penetrating through the substrate (11) is arranged between the arc-shaped cutting edge (12) and the inverted U-shaped groove (13).

2. Cutting blade according to claim 1, characterized in that a plurality of ventilation holes (15) are provided, arranged between the arcuate cutting edge (12) and the inverted U-shaped groove (13) at an arcuate or linear interval of the same diameter or of different diameters, and that each ventilation hole (15) does not extend beyond the ends of the arcuate cutting edge (12).

3. Cutting blade according to claim 1, characterized in that the base plate (11) is semicircular, that the base plate (11) is provided with integrally formed extension pieces (16) below the support legs (14) of the base plate (11) respectively, so that the base plate (11) is formed in an inverted U-shape overall, and that each extension piece (16) is provided with a limiting hole (17).

4. Cutting blade according to claim 1, characterized in that the distance between the bottom of the inverted U-shaped groove (13) and the highest point of the arcuate edge (111) of the substrate (11) is H, based on the highest point of the arcuate edge (111), wherein H is greater than or equal to one quarter of the diameter of the substrate (11).

5. The cutting blade according to claim 1, characterized in that the edges of the arcuate edges (111) of the two sides of the substrate (11) are provided with triangular grooves recessed inwards, so that the edges of the arcuate edges (111) of the two sides of the substrate (11) form an acute angle to form an arcuate cutting edge (12), and the arc length S of the arcuate cutting edge (12) is less than 150 degrees.

6. Reciprocating razor head characterized by comprising a plurality of cutting blades (1) according to any one of claims 1-5 and a movable blade holder (2) for fixing the cutting blades (1), wherein each cutting blade (1) is fixedly arranged on the movable blade holder (2) at intervals along the length direction of the movable blade holder (2) and connected as a whole, so that a blade groove (3) is respectively formed between adjacent cutting blades (1); the whisker arranging groove (22) is arranged in the movable cutter holder (2), the whisker arranging groove (22) is vertically communicated when any one of the two side faces of the movable cutter holder (2) is seen in the orthographic projection direction, and the cutter grooves (3) between the cutting blades (1) are respectively communicated with the whisker arranging groove (22); the inverted U-shaped grooves (13) in the cutting blades (1) and the whisker arranging grooves (22) are combined to form an air flow channel (4) penetrating through the two ends of the movable cutter holder (2) when seen in the orthographic projection direction of any end face of the two ends of the movable cutter holder (2).

7. The reciprocating razor head according to claim 6, characterized in that the movable blade holder (2) comprises two side plates (21) arranged at intervals, a whisker groove (22) is formed between the two side plates (21), and the extension pieces (16) in each cutting blade (1) are respectively inserted into the corresponding side plates (21) and are connected and fixed into a whole by using the limiting holes (17), so that the substrate (11) in each cutting blade (1) is positioned above the side plates (21); the width of the whisker arranging groove (22) is matched with the groove width of the inverted U-shaped groove (13), and a plurality of connecting sheets (23) which are arranged at intervals are arranged between the lower ends of the two side plates (21) to connect the two side plates (21) into a whole.

8. A reciprocating razor head according to claim 7, characterized in that the two side plates (21) are provided with respective baffle plates (24) at both ends thereof, each baffle plate (24) being provided with a through hole (25) communicating with the whisker groove (22) to form an inlet and outlet of the air flow passage (4), the through hole (25) having a cross-sectional area of not less than 0.5mm ² 。

9. A reciprocating razor head according to claim 6, characterized in that the diameter of the base piece (11) in at least one of the cutting blades (1) of the plurality of cutting blades (1) is larger than the width of the side plates (21) such that the outer sides of the two extending pieces (16) extend beyond the outer sides of the side plates (21).

10. Razor characterized by comprising a reciprocating razor head according to any of the preceding claims 6 to 9, the reciprocating razor head comprising a cutting blade according to any of the preceding claims 1 to 5.