A rotating moving blade

Abstract

The present invention relates to a rotating movable blade, which has a plurality of bent outer teeth at the edge of a substrate, and a plurality of inner teeth fixed on the side wall of a mounting hole, each inner tooth can be bent toward the outside, inside, or inside and outside of the mounting hole, and can be combined with the outer teeth or independently form at least one circle of teeth. The beneficial effect of the present invention is that a plurality of inner teeth are provided on the side wall of the mounting hole of the substrate, each inner tooth is bent from the punched material of the mounting hole, thereby avoiding waste of substrate material to the greatest extent and reducing the production cost of the movable blade. Secondly, each inner tooth can be bent toward the outside, inside, or inside and outside of the mounting hole according to the shaving needs of the static blade net, so that one circle, two circles, or three circles of teeth can be formed integrally on the substrate, which not only improves the surface utilization rate of the static blade net and enhances the shaving efficiency; at the same time, the three-circle tooth group can be integrally formed with the substrate, reducing the material and production and assembly costs of the movable blade.

Description

Technical Field

[0001] The present invention relates to a hair trimming blade, in particular to a trimming blade used in a rotary shaver, mainly used in shavers or hair shavers. Background Art

[0002] There are two main types of moving blades used in rotary shavers. One is the inner blade style disclosed in the Chinese patent title: Rotary Electric Shaver, Publication No.: CN1077485C, as shown in the attached specification of the patent document. Figure 4 As shown in the reference numeral 4, the length of the movable blade matches the radius of the static blade net, and by rotating, it covers the entire inner surface of the static blade net to achieve beard trimming. Figure 1 As shown, the movable blade is composed of an outer ring cutting tooth group and an inner ring cutting tooth group arranged on a base. Each cutting tooth is formed by stamping and bending on the base. This movable blade is mainly suitable for beard trimming with a single-ring or double-ring static blade net.

[0003] The existing market has multiple rings of cutting teeth of the moving blade can only realize the integration of two rings of cutting teeth, although it can meet the use requirements of the single ring or double ring static blade mesh. However, for the static blade mesh with three rings of trimming grooves, the only way to meet the corresponding use requirements is to stack two independent moving blades together to form a moving blade with three rings of cutting teeth, as shown in the attached patent of Chinese patent CN101237967B. Figure 2 As shown, this split-type moving blade with three rings of cutting teeth is formed by bending the outer edges of two base plates of different outer diameters to form the cutting teeth, which are then stacked together to form the moving blade. While this structure facilitates production and processing, the idle area at the center of the two base plates is relatively large, and material in this center area is wasted due to blanking. This not only reduces the effective shaving area of the static blade, but also wastes material, which inadvertently increases the production cost of the moving blade. Summary of the Invention

[0004] In order to solve the technical problems that the three-ring movable blade is composed of a plurality of split base plates with different outer diameters, which not only increases the material and production costs of the movable blade, but also reduces the surface utilization rate of the static blade net and reduces the shaving effect; the present invention provides a rotating movable blade, which can be punched and bent into three-ring cutting tooth groups at one time, thereby improving the shaving efficiency of the movable blade and reducing the production and assembly costs.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is a rotating movable blade, including a base plate, a mounting hole is arranged at the center of the base plate, and a plurality of cutting teeth are provided on the base plate at an annular interval along the axis of the mounting hole; the cutting teeth include a plurality of bent outer teeth fixed at the edge of the base plate and arranged at an annular interval with the axis of the mounting hole as the reference, and a plurality of inner teeth fixed on the side wall of the mounting hole and arranged at an annular interval with the axis as the reference, each inner tooth is formed by the punching material of the mounting hole and bent toward the outside, inside or inside and outside of the mounting hole in an staggered manner, and can be combined with the outer teeth or independently form at least one circle of tooth groups.

[0006] Preferably, each outer blade tooth and each inner blade tooth are integrally formed with the substrate, and the outer blade teeth are arranged in a ring-shaped array along the edge of the substrate in groups of one or more; each inner blade tooth is bent toward the outside of the mounting hole and is placed between adjacent outer blade teeth to coincide with the rotation trajectory of the outer blade teeth, so that a circle of outer teeth group is formed at the edge of the substrate, and the outer teeth group constitutes the said blade tooth group.

[0007] Preferably, each outer blade tooth and each inner blade tooth are respectively an integral structure with the substrate, and the outer blade teeth are arranged in a ring-shaped array along the edge of the substrate in a group of one or more; each inner blade tooth is bent toward the outside of the mounting hole at different bending length intervals, wherein each inner blade tooth with a relatively long bending length is placed between adjacent outer blade teeth and coincides with the rotation trajectory of the outer blade teeth to form a circle of outer tooth group; each inner blade tooth with a relatively short bending length independently forms a circle of middle tooth group, and the rotation trajectory diameter of the middle tooth group is smaller than the rotation trajectory diameter of the outer tooth group; the outer tooth group and the middle tooth group constitute the blade tooth group.

[0008] Preferably, each outer blade tooth and each inner blade tooth are respectively an integral structure with the substrate, and the outer blade teeth are arranged in a ring-shaped array along the edge of the substrate in a group of one or more; each inner blade tooth is bent toward the outside and inside of the mounting hole in an alternating manner, wherein the rotation trajectory of the inner blade teeth bent toward the outside of the mounting hole coincides with the rotation trajectory of the outer blade teeth and are respectively placed between adjacent outer blade teeth to form a circle of outer tooth groups; the remaining inner blade teeth bent toward the inside of the mounting hole independently form a circle of inner tooth groups, the rotation trajectory diameter of the inner tooth group is smaller than the rotation trajectory diameter of the outer tooth group and are concentrically arranged; the outer tooth group and the inner tooth group constitute the blade tooth group.

[0009] Preferably, each outer blade tooth and each inner blade tooth are respectively an integral structure with the substrate, and the outer blade teeth are arranged in a group of one or more in a circular array along the axis of the mounting hole to form a circle of outer teeth group at the edge of the substrate; each inner blade tooth is bent toward the outside or inside of the mounting hole, so that a circle of middle teeth group or inner teeth group concentric with the outer teeth group is formed on the substrate, and the rotation trajectory diameter of the middle teeth group or inner teeth group is smaller than the rotation trajectory diameter of the outer teeth group; the outer teeth group and the middle teeth group or inner teeth group constitute the blade tooth group.

[0010] Preferably, each outer blade tooth and each inner blade tooth are respectively an integral structure with the substrate, and the outer blade teeth are arranged in a group of one or more in a circular array along the axis of the mounting hole to form a circle of outer teeth group at the edge of the substrate; each inner blade tooth is bent toward the outside and inside of the mounting hole in an alternating manner to form an independent circle of middle teeth group and inner teeth group on the substrate, and the rotation trajectory diameter of the middle teeth group is larger than the rotation trajectory diameter of the inner teeth group and smaller than the rotation trajectory diameter of the outer teeth group; the outer teeth group, middle teeth group and inner teeth group constitute the blade tooth group.

[0011] Preferably, the cutting teeth also include a plurality of middle teeth arranged on the substrate between the plurality of outer teeth and the inner teeth, and each outer tooth, middle tooth and inner tooth are respectively integrated with the substrate; the outer teeth are grouped into one or more in a circular array along the axis of the mounting hole to form a circle of outer teeth group at the edge of the substrate; each middle tooth is arranged in a circular array along the mounting hole, and each inner tooth is bent toward the outside of the mounting hole and placed between adjacent middle teeth, and the rotation trajectory of each middle tooth and inner tooth is the same to form a circle of middle teeth group, and the rotation trajectory diameter of the middle teeth group is smaller than the rotation trajectory diameter of the outer teeth group, and the outer teeth group and the middle teeth group constitute the tooth group.

[0012] Preferably, the cutting teeth also include a plurality of middle teeth arranged on the substrate between a plurality of outer teeth and inner teeth, and each outer tooth, middle tooth and inner tooth are respectively integrated with the substrate; the outer teeth are grouped into one or more and arranged in a circular array along the axis of the mounting hole to form a circle of outer teeth group at the edge of the substrate; each middle tooth is evenly distributed in a circular pattern along the axis of the mounting hole to form a circle of independent middle teeth group; each inner tooth is bent along the inner side of the mounting hole to form a circle of independent inner teeth group; the rotation trajectory diameter of the middle tooth group is larger than the rotation trajectory diameter of the inner tooth group and smaller than the rotation trajectory diameter of the outer tooth group; the outer tooth group, middle tooth group and inner tooth group constitute the tooth group.

[0013] Preferably, the cutting teeth also include a plurality of middle teeth arranged on the substrate between a plurality of outer teeth and inner teeth, and each outer tooth, middle tooth and inner tooth are respectively integrated with the substrate; the outer teeth are grouped into one or more in a circular array along the axis of the mounting hole to form a circle of outer teeth group at the edge of the substrate; each middle tooth is evenly distributed in a circular pattern along the axis of the mounting hole; each inner tooth is bent toward the outside and inside of the mounting hole in an alternating manner, wherein the inner teeth bent toward the outside of the mounting hole are placed between adjacent middle teeth and their rotation trajectories overlap to form a circle of middle teeth group; the remaining inner teeth facing the inside of the mounting hole independently form a circle of inner teeth group; the rotation trajectory of the middle tooth group is greater than the rotation trajectory of the inner tooth group and smaller than the rotation trajectory of the outer tooth group; the outer tooth group, middle tooth group and inner tooth group constitute the tooth group.

[0014] Preferably, a circle of bent annular plates protruding from the surface of the substrate is provided at the edge of the substrate, and the outer teeth are fixed on the annular plates in a group of one or more in an annular spaced array and are integrated with the annular plates.

[0015] Preferably, an arc-shaped limiting groove is provided between adjacent inner teeth on the side wall of the mounting hole of the substrate.

[0016] Preferably, each inner blade tooth is bent along the mounting hole on the substrate so as to form a limiting notch on the peripheral side wall of the mounting hole.

[0017] Preferably, the plurality of tooth groups are coaxially arranged with the axis of the mounting hole on the substrate as a reference, and the number of cutting teeth in each tooth group increases sequentially from the inside to the outside.

[0018] Preferably, the blades of the outer teeth, middle teeth or inner teeth of the cutting teeth are in one or more combinations of V-shape, W-shape, C-shape, trapezoidal shape or straight flat shape.

[0019] The present invention has the beneficial effect of providing a plurality of internal cutting teeth on the sidewalls surrounding the mounting hole of the substrate. Each internal cutting tooth is formed by bending the material punched out of the mounting hole, thereby minimizing substrate material waste and reducing the production cost of the movable blade. Furthermore, each internal cutting tooth can be bent toward the outside, inside, or inside and outside of the mounting hole in a staggered manner, depending on the shaving needs of the static blade net. This allows for the formation of one, two, or three rings of cutting teeth on the substrate. This not only improves the surface utilization of the static blade net and enhances shaving efficiency, but also allows the three rings of cutting teeth to be formed integrally with the substrate, reducing the material and production and assembly costs of the movable blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A planar structural diagram of a first embodiment of a rotating moving blade according to an embodiment of the present invention

[0021] Figure 2 A planar structural diagram of a second embodiment of a rotating moving blade according to an embodiment of the present invention

[0022] Figure 3 A planar structural diagram of a third embodiment of a rotary moving blade according to an embodiment of the present invention

[0023] Figure 4 A plan view of the fourth embodiment of a rotary moving blade according to the present invention

[0024] Figure 5 A plan view of the fourth embodiment of a rotary moving blade according to the present invention

[0025] Figure 6 A plan view of the fifth embodiment of a rotary moving blade according to an embodiment of the present invention

[0026] Figure 7 A planar structural diagram of a sixth embodiment of a rotary moving blade according to an embodiment of the present invention

[0027] Figure 8 A plan view of the seventh embodiment of a rotary moving blade according to an embodiment of the present invention

[0028] Figure 9 A planar structural diagram of an eighth embodiment of a rotary moving blade according to an embodiment of the present invention

[0029] Figure 10 A three-dimensional structural diagram of an eighth embodiment of a rotary moving blade according to an embodiment of the present invention

[0030] Figure 11 A planar structural diagram of a V-shaped blade of a rotary moving blade according to an embodiment of the present invention

[0031] Figure 12 A three-dimensional structural diagram of a V-shaped blade of a rotary moving blade according to an embodiment of the present invention

[0032] Figure 13 A three-dimensional structural diagram of a C-shaped blade of a rotary moving blade according to an embodiment of the present invention

[0033] Figure 14 A three-dimensional structural diagram of a trapezoidal blade of a rotary moving blade according to an embodiment of the present invention

[0034] Figure 15 A three-dimensional structural diagram of a W-shaped blade of a rotary moving blade according to an embodiment of the present invention DETAILED DESCRIPTION

[0035] The embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0036] like Figure 1-15 As shown, the present invention is a rotating movable blade, including a generally circular base plate 1. In order to facilitate the assembly and fixation of the movable blade and the movable blade holder, the base plate 1 is basically provided with a mounting hole 2, and the mounting hole 2 is arranged at the center of the circle of the base plate 1. In order to trim the beard or hair, a plurality of cutting teeth 3 are provided on the base plate 1 and are arranged in a circular manner along the axis of the mounting hole 2. Since the cutting teeth 3 of the existing movable blade are basically only provided at the edge of the base plate 1 and between the mounting hole 2 and the edge of the base plate 1 to form a two-circle tooth group 4. Although this can meet the use requirements of the double-ring razor net, for the three-ring razor net, it is necessary to separately provide one or two base plates 1 that overlap to form a movable blade with a three-circle tooth group 4, such as the attached patent of Chinese patent CN101237967B. Figure 2As shown, this split-type moving blade with three rings of cutting teeth 3 is formed by bending the outer edges of two substrates 1 to form the cutting teeth 3, which are then stacked together to form the moving blade. Although this structure is convenient for production and processing, the idle area at the center of the two substrates 1 is relatively large, and the material in this center area is wasted due to punching. This not only reduces the effective shaving area of the static blade mesh, but also wastes material, which invisibly increases the production cost of the moving blade. To solve the technical problems of the three-ring moving blade, a split-type multiple substrates 1 are used, which not only increases the material and production costs of the moving blade, but also reduces the surface utilization of the static blade mesh, reducing the shaving effect. This embodiment provides the following technical solution: the cutting teeth 3 include a plurality of bent outer teeth 31 fixed at the edge of the substrate 1 and arranged in an annular pattern with the axis of the mounting hole 2 as the reference, and a plurality of inner teeth 32 fixed on the sidewall of the mounting hole 2 and arranged in an annular pattern with the axis as the reference. Each inner tooth 32 can be bent toward the outside, inside, or inside and outside of the mounting hole 2, and can be combined with the outer teeth 31 or independently form at least one circle of teeth 4. A plurality of inner teeth 32 are provided on the sidewall of the mounting hole 2 of the substrate 1. Each inner tooth 32 is bent from the punched material at the center of the mounting hole 2 (it can also be understood that after the inner teeth 32 are bent, the mounting hole 2 is formed in the center of the substrate 1). This minimizes waste of substrate 1 material and reduces the production cost of the movable blade. Secondly, each inner blade tooth 32 can be bent toward the outside, inside, or inside and outside of the mounting hole 2 in an staggered manner according to the shaving needs of the static blade net, so that one circle, two circles or three circles of blade tooth groups 4 can be formed integrally on the base plate 1, which can not only improve the surface utilization rate of the static blade net and enhance the shaving efficiency; at the same time, the three circles of blade tooth groups 4 can be integrally formed with the base plate 1, reducing the material and production and assembly costs of the dynamic blade.

[0037] Example 1

[0038] like Figure 1As shown, each outer blade tooth 31 and inner blade tooth 32 is integrally formed with the substrate 1 and can be integrally formed during production using stamping and bending processes. The outer blade teeth 31 are arranged in a circular array along the edge of the substrate 1 in groups of one or more. In actual production, the outer blade teeth 31 are arranged in a circular array along the outer diameter of the substrate 1 in groups of two or five. This increases the number of cutting teeth 3 that the moving blade passes through per unit time during one rotation, thereby improving the shaving efficiency of the beard. According to the customer's technical requirements, when only one circle of shaving grooves is provided in the static blade net (not shown in the figure), each inner blade tooth 32 can be bent along the outside of the mounting hole 2 and placed between adjacent outer blade teeth 31 to coincide with the rotation trajectory F1 of the outer blade teeth 31, so that a circle of outer teeth 41 is formed at the outer edge of the substrate 1. This outer teeth 41 constitutes the blade tooth group 4. Based on customer requirements, the outer teeth 31 and inner teeth 32 on the substrate 1 are combined to form a ring of teeth 4. While this doesn't increase the surface utilization of the static blade mesh, it does increase the number of cutting teeth 3 that interact with the static blade mesh per rotation of the moving blade, effectively improving the shaving efficiency of the moving blade. Furthermore, each inner tooth 32 is bent from the inside out, which improves the weight balance between the interior and edges of the substrate 1, ensuring the stability of the moving blade during rotational shaving.

[0039] Example 2

[0040] like Figure 2As shown, each outer blade tooth 31 and inner blade tooth 32 is integrally formed with the substrate 1 and can be integrally formed during production using stamping and bending processes. The outer blade teeth 31 are arranged in a circular array along the edge of the substrate 1 in groups of one or more. In actual production, the outer blade teeth 31 are arranged in groups of two or five along the outer diameter of the substrate 1. This increases the number of cutting teeth 3 that the moving blade passes per rotation, thereby improving shaving efficiency. Based on the customer's technical requirements, when only two circles of shaving grooves are provided in the static blade net (not shown in the figure), each inner blade tooth 32 is bent toward the outside of the mounting hole 2 at varying bend lengths. Inner blade teeth 32 with relatively long bend lengths are positioned between adjacent outer blade teeth 31 and overlap with the rotational trajectory of the outer blade teeth 31, forming a circle of outer teeth 41. Inner blade teeth 32 with relatively short bend lengths independently form a circle of middle teeth 42, with the diameter of the rotational trajectory F2 of the middle teeth 42 being smaller than the diameter of the rotational trajectory F1 of the outer teeth 41. These outer teeth 41 and middle teeth 42 constitute the blade tooth group 4. Based on the customer's technical requirements, the bend lengths of each inner blade tooth 32 on the sidewall of the mounting hole 2 are controlled, and a portion of the inner blade teeth 32 are positioned between adjacent outer blade teeth 31, forming a circle of outer teeth 41. The remaining inner teeth 32 independently form a circle of middle teeth group 42, so that the outer teeth group 41 and the middle teeth group 42 can be used in conjunction with the two circles of shaving grooves in the static blade net to complete beard trimming. Different bending lengths are used for each inner tooth 32 to form two circles of tooth groups 4 on the substrate 1, which relatively improves the surface utilization rate of the static blade net and improves the shaving efficiency of the beard. In addition, during the actual shaving process, the area near the edge of the static blade net has more beards entering. The bending length of some of the inner teeth 32 is increased to form a circle of outer teeth group 41 between them and the outer teeth 31. When the movable blade rotates to shave, the added inner teeth 32 can effectively increase the number of cutting teeth 3 that pass through the outer teeth group 41 per unit time, thereby improving the shaving efficiency of the movable blade.

[0041] Example 3

[0042] like Figure 3As shown, each outer blade tooth 31 and inner blade tooth 32 is integrally formed with the substrate 1 and can be formed integrally during production using stamping and bending processes. The outer blade teeth 31 are arranged in a circular array along the edge of the substrate 1 in groups of one or more. In actual production, the outer blade teeth 31 are arranged in groups of two or five in a circular array along the outer diameter of the substrate 1. This increases the number of cutting teeth 3 that the moving blade passes per rotation, thereby improving shaving efficiency. According to the customer's technical requirements, when only two circles of shaving grooves are set in the static knife net (not shown in the figure), each inner tooth 32 is bent and formed alternately toward the outside and inside of the mounting hole 2, among which the inner teeth 32 bent and formed toward the outside of the mounting hole 2 have a rotation trajectory that coincides with the rotation trajectory F1 of the outer teeth 31 and are respectively placed between adjacent outer teeth 31 to form a circle of outer tooth group 41; the remaining inner teeth 32 bent and formed toward the inside of the mounting hole 2 independently form a circle of inner tooth group 43, and the diameter of the rotation trajectory F3 of the inner tooth group 43 is smaller than the diameter of the rotation trajectory F1 of the outer tooth group 41 and is concentrically arranged; the outer tooth group 41 and the inner tooth group 43 constitute the tooth group 4. According to the customer's technical requirements, the bending length of each inner tooth 32 on the side wall of the mounting hole 2 is controlled, and the part of the inner teeth 32 bent toward the outside of the mounting hole 2 is placed between the adjacent outer teeth 31 to form a circle of outer teeth group 41, and the remaining inner teeth 32 bent toward the inside of the mounting hole 2 independently form a circle of inner teeth group 43. This not only increases the number of cutting teeth 3 in the outer teeth group 41, but also improves the shaving efficiency per unit time of one rotation of the movable blade; at the same time, the use of the independent inner teeth group 43 can also effectively improve the utilization rate of the surface of the static blade net and improve the shaving efficiency of the static blade net.

[0043] Example 4

[0044] like Figure 4-5As shown, each outer blade tooth 31 and each inner blade tooth 32 is an integral structure with the substrate 1 and can be integrally formed using stamping and bending processes during production; and the outer blade teeth 31 are arranged in a ring-shaped array along the axis of the mounting hole 2 in a group of one or more to form a circle of outer teeth group 41 at the edge of the substrate 1; in the actual production process, the outer blade teeth 31 are arranged in a ring-shaped array along the outer diameter of the substrate 1 in a group of two or five, thereby increasing the number of cutting teeth 3 passed by the movable blade in the unit time of one rotation to improve the shaving efficiency of the beard. According to customer technical requirements, when only two circles of shaving grooves are provided in the static blade net (not shown in the figure), each inner blade tooth 32 is bent toward the outside or inside of the mounting hole 2, forming a circle of middle teeth 42 or inner teeth 43 on the substrate 1, which is concentric with the outer teeth group 41. The diameters of the rotation paths F2 and F3 of the middle teeth group 42 or inner teeth group 43 are smaller than the diameter of the rotation path F1 of the outer teeth group 41. The outer teeth group 41 and the middle teeth group 42 or inner teeth group 43 constitute the blade tooth group 4. By controlling the bending of each inner blade tooth toward the outside or inside of the mounting hole 2, the outer edge of the substrate 1 forms the outer teeth group 41, while also forming the middle teeth group 42 bent toward the outside of the mounting hole 2 or the inner teeth group 43 bent toward the inside of the mounting hole 2. This effectively increases the surface utilization of the static blade net and improves the shaving efficiency of the dynamic blade. Furthermore, each inner tooth 32 in the outer tooth group 41 on the substrate 1 is formed by bending the blanking material of the mounting hole 2, thereby improving the material utilization rate of the substrate 1, avoiding material waste, and reducing production costs.

[0045] Example 5

[0046] like Figure 6As shown, each outer blade tooth 31 and each inner blade tooth 32 is an integral structure with the substrate 1 and can be integrally formed using stamping and bending processes during production; and the outer blade teeth 31 are arranged in a ring-shaped array along the axis of the mounting hole 2 in a group of one or more to form a circle of outer teeth group 41 at the edge of the substrate 1; in the actual production process, the outer blade teeth 31 are arranged in a ring-shaped array along the outer diameter of the substrate 1 in a group of two or five, thereby increasing the number of cutting teeth 3 passed by the movable blade in the unit time of one rotation to improve the shaving efficiency of the beard. According to the customer's technical requirements, when three circles of shaving grooves are set in the static knife net (not shown in the figure), each inner tooth 32 is bent and formed in an alternating manner toward the outside and inside of the mounting hole 2, so that an independent circle of middle tooth group 42 and inner tooth group 43 are formed on the substrate 1. The diameter of the rotation trajectory F2 of the middle tooth group 42 is larger than the diameter of the rotation trajectory F3 of the inner tooth group 43 and smaller than the diameter of the rotation trajectory F1 of the outer tooth group 41; the outer tooth group 41, the middle tooth group 42 and the inner tooth group 43 constitute the knife tooth group 4. By controlling the inner teeth 32 to be bent and formed alternately toward the outside and inside of the mounting hole 2, three circles of independent tooth groups 4 including the outer tooth group 41 are formed on the substrate 1. When in use, the three independent outer tooth groups 41, the middle tooth group 42 and the inner tooth group 43 can be respectively matched with the three circles of shaving grooves in the static knife net, which can greatly improve the surface utilization rate of the static knife net and improve the shaving efficiency of the dynamic blade; at the same time, the three circles of tooth groups 4 are all integrated with the substrate 1, and the punching material of the mounting hole 2 is used to bend and form the middle tooth group 42 and the inner tooth group 43, which greatly reduces the material cost of the dynamic blade.

[0047] Example 6

[0048] like Figure 7As shown, to maximize utilization of the limited space within substrate 1 and enhance the shaving efficiency of the movable blade, the cutting teeth 3 also include a plurality of middle teeth 33 disposed on substrate 1 between a plurality of outer teeth 31 and inner teeth 32. Each outer tooth 31, middle tooth 33, and inner tooth 32 is integrally formed with substrate 1 during production using stamping and bending processes. The outer teeth 31 are arranged in groups of one or more in an annular array along the axis of mounting hole 2, forming a ring of outer teeth 41 at the edge of substrate 1. In actual production, the outer teeth 31 are arranged in groups of two or five in an annular array along the outer diameter of substrate 1. This increases the number of cutting teeth 3 that the movable blade passes over during one rotation, thereby enhancing shaving efficiency. According to the customer's technical requirements, when two circles of shaving grooves are set in the static knife net (not shown in the figure), each middle knife tooth 33 is arranged in a ring-shaped interval along the mounting hole 2, and each inner knife tooth 32 is bent toward the outside of the mounting hole 2 and placed between adjacent middle knife teeth 33. The rotation trajectory of each middle knife tooth 33 and the inner knife teeth 32 are the same to form a circle of middle tooth group 42. The diameter of the rotation trajectory F2 of the middle tooth group 42 is smaller than the diameter of the rotation trajectory F1 of the outer tooth group 41. The outer tooth group 41 and the middle tooth group 42 constitute the knife tooth group 4. By adding a plurality of middle blade teeth 33 between the outer blade teeth 31 of the base plate 1 and the inner blade teeth 32 on the side wall of the mounting hole 2, the inner blade teeth 32 are bent toward the outside of the mounting hole 2, and each inner blade tooth 32 is placed between adjacent middle blade teeth 33 to form a circle of independent middle tooth groups 42. In this way, two circles of blade tooth groups 4, namely the outer tooth group 41 and the middle tooth group 42, are formed on the base plate 1. When in use, while improving the surface utilization rate of the static blade net, it can also increase the number of cutting teeth 3 in the middle tooth group 42, thereby improving the shaving efficiency of the moving blade per unit time of one rotation.

[0049] Example 7

[0050] like Figure 8As shown, to maximize the use of the limited space on substrate 1 and enhance the shaving efficiency of the movable blade, the cutting teeth 3 also include a plurality of intermediate teeth 33 disposed on substrate 1 between a plurality of outer teeth 31 and inner teeth 32. Each outer tooth 31, intermediate tooth 33, and inner tooth 32 is integrally formed with substrate 1 and can be integrally formed during production using stamping and bending processes. The outer teeth 31 are arranged in a ring-shaped array along the axis of mounting hole 2, forming a circle of outer teeth 41 at the edge of substrate 1. In actual production, the outer teeth 31 are arranged in groups of two or five, forming a ring-shaped array along the outer diameter of substrate 1. This increases the number of cutting teeth 3 that the movable blade passes during one rotation, thereby enhancing shaving efficiency. According to the customer's technical requirements, when three circles of shaving grooves are set in the static knife net (not shown in the figure), each middle knife tooth 33 is evenly distributed in a ring shape along the axis of the mounting hole 2; each inner knife tooth 32 is bent toward the outside and inside of the mounting hole 2 in an alternating manner, wherein the inner knife teeth 32 bent toward the outside of the mounting hole 2 are respectively placed between adjacent middle knife teeth 33 and the rotation trajectories overlap to form a circle of middle tooth group 42; the remaining inner knife teeth 32 facing the inside of the mounting hole 2 independently form a circle of inner tooth group 43; the rotation trajectory F2 of the middle tooth group 42 is greater than the rotation trajectory F3 of the inner tooth group 43 and smaller than the rotation trajectory F1 of the outer tooth group 41; the outer tooth group 41, the middle tooth group 42 and the inner tooth group 43 constitute the knife tooth group 4. By adding a plurality of middle teeth 33 in a circular array along the axis of the mounting hole 2 between the outer teeth 31 of the substrate 1 and the inner teeth 32 on the side walls of the mounting hole 2, the number of cutting teeth 3 is increased within the limited plane space of the substrate 1 to improve the shaving efficiency of the beard. Secondly, each inner tooth 32 is bent toward the inside of the mounting hole 2 to form a circle of independent inner tooth groups 43. By using the inner tooth group 43 in conjunction with the shaving grooves in the static blade net, the central area of the static blade net can achieve shaving performance, which not only improves the surface utilization of the static blade net, but also maximizes the shaving efficiency of the moving blade. In the actual production process, each inner tooth 32 is bent and formed by the punched material of the mounting hole 2. While improving the material utilization of the substrate 1, it reduces the waste of the substrate 1 material, realizes the integrated formation of three circles of tooth groups 4 in the same substrate 1, and reduces the material and production costs of the moving blade.

[0051] Example 8

[0052] like Figure 9-10As shown, to maximize the use of the limited space on substrate 1 and enhance the shaving efficiency of the movable blade, the cutting teeth 3 also include a plurality of intermediate teeth 33 disposed on substrate 1 between a plurality of outer teeth 31 and inner teeth 32. Each outer tooth 31, intermediate tooth 33, and inner tooth 32 is integrally formed with substrate 1 and can be integrally formed during production using stamping and bending processes. The outer teeth 31 are arranged in a ring-shaped array along the axis of mounting hole 2, forming a circle of outer teeth 41 at the edge of substrate 1. In actual production, the outer teeth 31 are arranged in groups of two or five, forming a ring-shaped array along the outer diameter of substrate 1. This increases the number of cutting teeth 3 that the movable blade passes during one rotation, thereby enhancing shaving efficiency. According to customer technical requirements, when three rings of shaving grooves are provided in the static blade net (not shown), each middle tooth 33 is evenly distributed in a ring along the axis of the mounting hole 2, forming a ring of independent middle teeth 42. Each inner tooth 32 is bent along the inner side of the mounting hole 2 to form a ring of independent inner teeth 43. The diameter of the rotation trajectory F2 of the middle tooth group 42 is greater than the diameter of the rotation trajectory F3 of the inner tooth group 43 and smaller than the diameter of the rotation trajectory F1 of the outer tooth group 41. The outer tooth group 41, middle tooth group 42, and inner tooth group 43 constitute the tooth group 4. Multiple middle teeth 33 are added between the outer teeth 31 of the substrate 1 and the inner teeth 32 on the sidewall of the mounting hole 2, forming a ring of middle teeth 42. Adding multiple middle teeth 33 to form a middle tooth group 42 within the limited space of the substrate 1 increases the number of cutting teeth 3 on the substrate 1 without increasing the material cost of the substrate 1, thereby improving the shaving efficiency of the dynamic blade. The multiple inner teeth 32 disposed on the peripheral sidewalls of the mounting hole 2 are bent toward the inside of the mounting hole 2 to form an independent inner tooth group 43. This results in three independent circles of teeth 4 formed on the substrate 1. During use, the three circles of teeth 4 can respectively cooperate with the three circles of shaving grooves within the static blade net, which not only improves the surface utilization of the static blade net and enhances the shaving effect, but also utilizes the material punched out of the mounting hole 2 to form the inner teeth 32, improving the utilization of the substrate 1 material. The three circles of teeth 4 are formed integrally on the substrate 1, reducing the material cost of the dynamic blade.

[0053] like Figure 11-15As shown, to enhance the secure connection between each outer cutting tooth 31 and the substrate 1 and prevent fracture or cracking at the junction of the outer cutting teeth 31 and the substrate 1 during bending, which could compromise the working strength of the outer cutting teeth 31, a ring of bent annular plates 11 protruding from the surface of the substrate 1 is provided at the edge of the substrate 1. Each outer cutting tooth 31 is fixed to the annular plate 11 in a circular array, one or more in a group, forming an integral structure with the annular plate 11. By adding the annular plate 11 and uniformly distributing each outer cutting tooth 31 in a circular array on the end surface of the annular plate 11, stress concentration at the junction of the root of the outer cutting tooth 31 and the edge of the substrate 1 is avoided, preventing fracture at the root of the outer cutting tooth 31 along the edge of the substrate 1. This improves the working strength of each outer cutting tooth 31 and ensures the shaving efficiency of the movable blade. In actual production, each outer cutting tooth 31 is integrally formed with the annular plate 11, which in turn is integrally formed with the substrate 1 through bending. Secondly, because the outer circle of teeth 31 on the substrate 1 has a relatively long circumference, to enhance the shaving efficiency of this outer circle of teeth 31, the cutting teeth 3 within this outer circle 31 are arranged in a circular array along the center of the substrate 1, in groups of one or more. In actual production, the cutting teeth 3 within the outer tooth group 41 are arranged in groups of two, three, four, or five. The greater the number of outer teeth 31 positioned along the outer edge of the substrate 1 during one rotation of the substrate 1, the higher the shaving efficiency. Of course, the number of cutting teeth 3 within the outer tooth group 41 can be determined based on customer requirements and is not limited in this embodiment.

[0054] During shaving, the movable blade needs to perform rotational cutting along the bottom end surface of the stationary blade. To enhance the connection strength and rotational synchronization between the movable blade and the movable blade holder (not shown in the figure), an arc-shaped limiting groove 12 is provided between adjacent inner teeth 32 on the side wall of the mounting hole 2 of the substrate 1. The arc-shaped limiting groove 12 is added between adjacent inner teeth 32 on the peripheral side wall of the mounting hole 2. When assembling the movable blade, the peripheral side wall of the movable blade holder can be snapped into the arc-shaped limiting groove 12. This not only enhances the connection strength between the movable blade and the movable blade holder, but also effectively ensures the synchronization between the movable blade and the movable blade holder, thereby improving the rotary cutting efficiency of the movable blade. In the actual production process, the movable blade holder and the substrate 1 are integrally formed by secondary injection molding, thereby ensuring that the connection between the movable blade holder and the arc-shaped limiting groove 12 on the peripheral side wall of the mounting hole 2 is more reliable to the greatest extent.

[0055] To further enhance the connection between the movable blade and the drive motor within the shaver, each inner cutter tooth 32 is bent along the mounting hole 2 on the substrate 1, forming a retaining notch 13 on the peripheral sidewall of the mounting hole 2. After each inner cutter tooth 32 is bent along the peripheral sidewall of the mounting hole 2, and the notch 13 is formed on the peripheral sidewall of the mounting hole 2, during installation, the peripheral sidewall of the movable blade holder can be directly snapped into the notch 13, forming the substrate 1 and the movable blade holder as a single unit. When the drive shaft of the drive motor drives the movable blade holder to rotate, the operating stability of the movable blade is effectively enhanced, improving the shaving efficiency of the movable blade. In actual production, the movable blade holder and substrate 1 are integrally molded through a secondary injection molding process, thereby ensuring a more reliable connection between the movable blade holder and the notch 13 on the peripheral sidewall of the mounting hole 2.

[0056] To enhance beard trimming efficiency, multiple tooth groups 4 are coaxially arranged around the axis of the mounting hole 2 on the base plate 1. The number of cutting teeth 3 in each tooth group 4 increases from the inside out. The coaxial arrangement of the outer tooth group 41, the middle tooth group 42, and / or the inner tooth group 43 on the base plate 1 effectively improves the smoothness of the rotating blade during shaving, prevents polarization of the rotating blade during shaving, and reduces vibration during operation. As needed, three circles of tooth groups 4 can be formed on the substrate 1, such as an outer tooth group 41, a middle tooth group 42, and an inner tooth group 43. The three circles of tooth groups 4 are located on the same plane of the substrate 1. The diameters of their rotational trajectories F1, F2, and F3 inevitably differ in size, resulting in different circumferences of the diameters of the rotational trajectories of each circle of tooth groups 4. Therefore, with the mounting hole 2 of the substrate 1 as the reference, the number of cutting teeth 3 on each circle of tooth groups 4 increases from the inside to the outside. The cutting teeth 3 on each circle of tooth groups 4 are evenly spaced along the mounting hole 2 in an annular pattern, thereby preventing polarization of the movable blade during rotational shaving and improving the shaving efficiency of the movable blade. To maximize shaving efficiency, in actual production, the cutting teeth 3 in the outer tooth group 41 are arranged in groups of two or more, evenly spaced along the axis of the mounting hole 2 of the substrate 1, increasing the number of cutting teeth 3 in the outer tooth group 41 to improve the shaving efficiency of the movable blade.

[0057] like Figure 11-15As shown, the blades of the outer teeth 31, the middle teeth 33, or the inner teeth 32 of the cutting teeth 3 are in one or more combinations of V-shape, W-shape, C-shape, trapezoidal shape, or a straight flat shape, preferably V-shape. Since the V-shape, W-shape, C-shape, or trapezoidal shape all have one thing in common, that is, the opening width of the blade is relatively large and gradually becomes smaller as it extends inward. When shaving, the wider blade opening can not only capture more beards, but also gather the beards toward the center of the blade, thus preventing the beards from escaping outward along the blade during shaving, thereby improving the shaving efficiency. Since the substrate 1 can be provided with three circles of tooth groups 4 as needed, and due to the size limitation of the multi-head shaver, the diameter of the substrate 1 is relatively small, when stamping and bending the outer teeth 31, the middle teeth 33, and the inner teeth 32 in the cutting teeth 3 are stamped and bent under limited space conditions, the processing difficulty of stamping and bending the outer teeth 31, the middle teeth 33, and the inner teeth 32 is relatively large. Therefore, in actual production, only the outer teeth 31 have V-shaped blades, while the middle teeth 33 and inner teeth 32 have straight, flat blades. Of course, simply setting the outer teeth 31's blades to be V-shaped doesn't mean that only the outer teeth 31's blades can be improved. The blades of the middle teeth 33 and / or inner teeth 32 can also be set to be V-shaped, or a combination of multiple shapes, based on customer or market demands. Furthermore, the individual cutting teeth 3 in the outer tooth group 41, the middle tooth group 42, or the inner tooth group 43 can also be combined using different blade shapes, so that multiple cutting teeth 3 in a circle of tooth groups 4 have blades of different shapes. This can be determined based on customer or market demands.

[0058] The above embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the scope of protection of the present invention.

Claims

1. A rotary moving blade, comprising a base plate (1), a mounting hole (2) provided at the center of the base plate (1), and a plurality of cutting teeth (3) provided on the base plate (1) at annular intervals along the axis of the mounting hole (2); characterized in that The cutting teeth (3) include a plurality of outer blade teeth (31) fixed at the edge of the substrate (1) and arranged in an annular space with the axis of the mounting hole (2) as the reference, and a plurality of inner blade teeth (32) fixed on the peripheral side wall of the mounting hole (2) and arranged in an annular space with the axis as the reference. Each inner blade tooth (32) is formed by bending the blanking material of the mounting hole (2) toward the outside, inside, or inside and outside of the mounting hole (2) in an alternating manner, and can be combined with the outer blade teeth (31) or independently form at least one circle of blade teeth group (4).

2. A rotary moving blade according to claim 1, characterized in that Each outer blade tooth (31) and each inner blade tooth (32) are integrally formed with the substrate (1), and the outer blade teeth (31) are arranged in a ring-shaped array along the edge of the substrate (1) in a group of one or more. Each inner blade tooth (32) is bent toward the outside of the mounting hole (2) and is placed between adjacent outer blade teeth (31) to coincide with the rotation trajectory of the outer blade teeth (31), so that a circle of outer teeth (41) is formed at the edge of the substrate (1), and the outer teeth (41) constitutes the blade tooth group (4).

3. The rotary moving blade according to claim 1, characterized in that Each outer blade tooth (31) and each inner blade tooth (32) is an integral structure with the substrate (1), and the outer blade teeth (31) are arranged in a ring-shaped interval array along the edge of the substrate (1) in a group of one or more; each inner blade tooth (32) is bent toward the outside of the mounting hole (2) at different bending length intervals, wherein each inner blade tooth (32) with a relatively long bending length is respectively placed between adjacent outer blade teeth (31) and overlaps with the rotation trajectory of the outer blade teeth (31) to form a circle of outer teeth group (41); each inner blade tooth (32) with a relatively short bending length independently forms a circle of middle teeth group (42), and the diameter of the rotation trajectory F2 of the middle teeth group (42) is smaller than the diameter of the rotation trajectory F1 of the outer teeth group (41); the outer teeth group (41) and the middle teeth group (42) constitute the blade tooth group (4).

4. The rotary moving blade according to claim 1, characterized in that Each outer blade tooth (31) and each inner blade tooth (32) is an integral structure with the substrate (1), and the outer blade teeth (31) are arranged in a ring-shaped spaced array along the edge of the substrate (1) in a group of one or more. Each inner blade tooth (32) is bent toward the outside and inside of the mounting hole (2) in an alternating manner, wherein the rotation trajectory of the inner blade teeth (32) bent toward the outside of the mounting hole (2) coincides with the rotation trajectory of the outer blade teeth (31) and are respectively arranged between adjacent outer blade teeth (31) to form a circle of outer teeth group (41); the remaining inner blade teeth (32) bent toward the inside of the mounting hole (2) independently form a circle of inner teeth group (43), the rotation trajectory F3 of the inner teeth group (43) having a diameter smaller than the rotation trajectory F1 of the outer teeth group (41) and being concentrically arranged; the outer teeth group (41) and the inner teeth group (43) constitute the blade tooth group (4).

5. The rotary moving blade according to claim 1, characterized in that Each outer blade tooth (31) and each inner blade tooth (32) are respectively integrated with the substrate (1), and the outer blade teeth (31) are arranged in a ring-shaped array along the axis of the mounting hole (2) to form a circle of outer teeth group (41) at the edge of the substrate (1); each inner blade tooth (32) is bent toward the outside or inside of the mounting hole (2) to form a circle of middle teeth group (42) or inner teeth group (43) concentric with the outer teeth group (41) on the substrate (1), and the diameter of the rotation trajectory F2, F3 of the middle teeth group (42) or the inner teeth group (43) is smaller than the diameter of the rotation trajectory F1 of the outer teeth group (41); the outer teeth group (41) and the middle teeth group (42) or the inner teeth group (43) constitute the blade tooth group (4).

6. The rotary moving blade according to claim 1, characterized in that Each outer blade tooth (31) and each inner blade tooth (32) are respectively integrated with the substrate (1), and the outer blade teeth (31) are arranged in a ring-shaped array along the axis of the mounting hole (2) to form a circle of outer teeth group (41) at the edge of the substrate (1); each inner blade tooth (32) is bent toward the outer side and the inner side of the mounting hole (2) in an alternating manner, so that an independent circle of middle teeth group (42) and inner teeth group (43) are formed on the substrate (1), and the diameter of the rotation trajectory F2 of the middle teeth group (42) is larger than the diameter of the rotation trajectory F3 of the inner teeth group (43) and smaller than the diameter of the rotation trajectory F1 of the outer teeth group (41); the outer teeth group (41), the middle teeth group (42) and the inner teeth group (43) constitute the blade tooth group (4).

7. The rotary moving blade according to claim 1, characterized in that The cutting teeth (3) further include a plurality of middle teeth (33) arranged between a plurality of outer teeth (31) and an inner tooth (32) on the substrate (1), wherein each outer tooth (31), middle tooth (33) and inner tooth (32) are respectively integrated with the substrate (1); the outer teeth (31) are arranged in a ring-shaped array along the axis of the mounting hole (2) to form a circle of outer teeth (41) at the edge of the substrate (1); each middle tooth (33) is arranged along the axis of the mounting hole (2) to form a circle of outer teeth (4 ... The mounting holes (2) are arranged in an annular pattern, and the inner teeth (32) are bent toward the outside of the mounting holes (2) and respectively placed between adjacent middle teeth (33). The rotational trajectories of the middle teeth (33) and the inner teeth (32) are the same, forming a circle of middle teeth group (42). The diameter of the rotational trajectory F2 of the middle teeth group (42) is smaller than the diameter of the rotational trajectory F1 of the outer teeth group (41). The outer teeth group (41) and the middle teeth group (42) constitute the tooth group (4).

8. The rotary moving blade according to claim 1, characterized in that The cutting teeth (3) further include a plurality of middle teeth (33) arranged between a plurality of outer teeth (31) and an inner tooth (32) on the substrate (1), wherein each outer tooth (31), middle tooth (33) and inner tooth (32) are respectively integrated with the substrate (1); the outer teeth (31) are arranged in a ring-shaped array along the axis of the mounting hole (2) to form a circle of outer teeth (41) at the edge of the substrate (1); each middle tooth (33) is arranged along the axis of the mounting hole (2) to form a circle of outer teeth (4 ... The axis of the mounting hole (2) is evenly distributed in a ring shape to form a circle of independent middle tooth groups (42); each inner tooth (32) is bent along the inner side of the mounting hole (2) to form a circle of independent inner tooth groups (43); the diameter of the rotation trajectory F2 of the middle tooth group (42) is greater than the diameter of the rotation trajectory F3 of the inner tooth group (43) and smaller than the diameter of the rotation trajectory F1 of the outer tooth group (41); the outer tooth group (41), the middle tooth group (42) and the inner tooth group (43) constitute the knife tooth group (4).

9. The rotary moving blade according to claim 1, characterized in that The cutting teeth (3) further include a plurality of middle teeth (33) arranged on the substrate (1) between the plurality of outer teeth (31) and the inner teeth (32), wherein each outer tooth (31), the middle tooth (33) and the inner tooth (32) are respectively integrated with the substrate (1); the outer teeth (31) are arranged in a ring-shaped array along the axis of the mounting hole (2) to form a circle of outer teeth (41) at the edge of the substrate (1); the middle teeth (33) are arranged in a ring-shaped uniform distribution along the axis of the mounting hole (2); and the inner teeth (32) are respectively staggered toward the mounting hole ( 2) the outer side and the inner side are bent and formed, wherein the inner teeth (32) bent and formed toward the outer side of the mounting hole (2) are respectively placed between adjacent middle teeth (33) and their rotational trajectories overlap to form a circle of middle teeth group (42); the remaining inner teeth (32) facing the inner side of the mounting hole (2) independently form a circle of inner teeth group (43); the rotational trajectory F2 of the middle teeth group (42) is greater than the rotational trajectory F3 of the inner teeth group (43) and smaller than the rotational trajectory F1 of the outer teeth group (41); the outer teeth group (41), the middle teeth group (42) and the inner teeth group (43) constitute the tooth group (4).

10. The rotary moving blade according to claim 1, characterized in that A circle of bent annular plates (11) protruding from the surface of the substrate (1) is provided at the edge of the substrate (1), and the outer blade teeth (31) are fixed on the annular plates (11) in a ring-shaped spaced array in groups of one or more and are integrated with the annular plates (11).

11. The rotary moving blade according to claim 1, characterized in that An arc-shaped limiting groove (12) is provided between adjacent inner cutting teeth (32) on the side wall of the mounting hole (2) of the substrate (1).

12. The rotary moving blade according to claim 1, characterized in that Each inner blade tooth (32) is bent along the mounting hole (2) on the substrate (1) to form a limiting bayonet (13) on the peripheral side wall of the mounting hole (2).

13. The rotary moving blade according to claim 1, characterized in that Taking the axis of the mounting hole (2) on the substrate (1) as a reference, a plurality of blade tooth groups (4) are coaxially arranged, and the number of cutting teeth (3) of each blade tooth group (4) increases sequentially from the inside to the outside.

14. A rotary moving blade according to any one of claims 1 to 13, characterized in that The blades of the outer teeth (31), the middle teeth (33) or the inner teeth (32) of the cutting teeth (3) are in one or more combinations of V-shape, W-shape, C-shape, trapezoidal shape or straight flat shape.

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