Trimmer blade and head assembly with profiled teeth and trimmer tool

Abstract

The present application relates to a trimming blade and a head assembly with special-shaped teeth and a trimming tool, characterized in that cutting teeth and supporting teeth are formed between the hair guide grooves on the face plate and the side plate respectively, the tooth tips of the supporting teeth are integrated with the tooth tips of the cutting teeth; the tooth tips of the supporting teeth are folded or bent towards the tooth roots of the cutting teeth from the tooth tips of the cutting teeth as the starting point, based on the cutting working surface of the cutting teeth, so that a gap is formed between the outer surface of the side plate and the edge of the tooth tips of the cutting teeth. The beneficial effects are that the hair guide grooves on the face plate and the side plate are connected, the hair does not need to be preliminarily cut by scissors and the like and directly enters the hair guide grooves, thereby increasing the application range of the hair. By folding or bending the supporting teeth relative to the cutting teeth, the working strength is improved, and the gap between the side plate and the tooth tips of the cutting teeth can also be adjusted by folding or bending, so that the long hair does not contact the outer surface of the side plate when approaching the opening of the hair guide groove, thereby accelerating the hair entering speed and improving the hair entering efficiency.

Description

Technical Field

[0001] The present invention relates to a device for trimming hair, and more particularly to a trimming blade with special-shaped teeth, a cutter head assembly and a trimming tool, which are mainly used in the field of hair trimming. Background Art

[0002] The trimming blade used for trimming hair is the main component of a razor or shaver, mainly including a panel that contacts the skin and a side panel for supporting the panel. Regardless of whether the trimming blade is used for a rotary shaver or a reciprocating shaver, the side panels are basically directly bent along the edge of the panel, which results in the side panels being on the same vertical line with the tips of the cutting teeth on the panel. When relatively long hair enters the hair guide groove between adjacent cutting teeth, it is easily blocked and interfered by the side panels, making it difficult to enter the hair guide groove, thereby reducing the hair feeding speed and hair feeding efficiency of the trimming blade. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a trimming blade and a cutter head assembly and a trimming tool with special-shaped teeth, which form a certain distance between the outer surface of the side plate and the tooth tip of the cutting teeth by folding or bending, thereby avoiding the outer surface of the side plate from blocking or interfering with the hair entering the hair guide groove, thereby improving the hair feeding speed and hair feeding efficiency of the trimming blade.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is a trimming blade with special-shaped teeth, including a panel in contact with the skin and a side panel located below the panel for supporting the panel, a plurality of hair guide grooves that are interconnected and arranged at intervals are respectively provided on the panel and one end of the side panel close to the panel, cutting teeth and supporting teeth are respectively formed between the adjacent hair guide grooves on the panel and the side panel, and the tooth tips of the supporting teeth are connected to the tooth tips of the cutting teeth as a whole; with the cutting working surface of the cutting teeth as a reference, the tooth tips of the supporting teeth are folded and formed with the tooth tips of the cutting teeth as a starting point toward the tooth root direction of the cutting teeth, so that a tooth tip is formed between the outer surface of the side panel and the edge of the tooth tip of the cutting teeth spacing; the other end of the side panel is connected and fixed to the knife holder, wherein the side panel includes a first support segment, a second support segment, a third support segment and a basic support segment connected in sequence from top to bottom, and the guide groove is arranged on the first support segment, the second support segment and the third support segment, so that the support teeth are formed in the first support segment, the second support segment and the third support segment, the first support segment constitutes the tooth tip of the support tooth and the thickness of the first support segment is smaller than that of the remaining support segments; with the cutting working surface of the cutting tooth on the panel as a reference, the first support segment is horizontally arranged relative to the cutting working surface gap in a folded shape, and the length of the first support segment is greater than or equal to 2 times the thickness of the panel or side panel.

[0005] Preferably, the thickness of at least the local area where the cutting teeth are provided on the panel is smaller than the thickness of the panel.

[0006] Preferably, each guide groove on the panel has at least two different taperings from the surface projection of the panel in contact with the skin, so that the opening width of the guide groove is greater than the inner width.

[0007] Preferably, the guide groove on the panel comprises an inner cut groove placed inside the panel and an outer guide groove placed at the edge of the panel, and the inner cut groove is tapered from small to large inside and outside and has a tapering of 1°-10°, and the tapering of the outer guide groove is 1.2-4 times that of the inner cut groove, and the length of the outer guide groove is less than or equal to one third of the total length of the guide groove.

[0008] Preferably, the second support section and the third support section form an included angle, and the included angle is less than 180 degrees; the base support section is perpendicular to the cutting working surface of the panel, and an open arc hole is provided at the bottom of the base support section to detachably and fixedly connect the base support section with the tool holder.

[0009] Preferably, the panel is square, and the side plate is provided with two pieces respectively arranged at two sides of the panel, one end of each piece is integrally connected with the inner surface of the panel to support the panel, and the other end is connected with the tool holder to be fixed, and the guide grooves are linearly arranged along the two side edges of the panel.

[0010] Preferably, the arrangement length of the guide grooves on the two sides of the panel is less than the length of the panel, so that the two ends of the panel form reinforcing portions respectively, and the cross-sectional shape of the reinforcing portion is the same as or different from the cross-sectional shape of the cutting tooth.

[0011] Preferably, at least one second shaving area composed of a plurality of guide holes penetrating through the panel is provided between the guide grooves on the two sides of the panel, and the thickness of the second shaving area is less than the thickness of the panel and is the same as the thickness of the area provided with the cutting tooth on the two sides of the panel.

[0012] On the basis of the above-mentioned trimming blade with special-shaped teeth, the applicant further proposes a technical scheme of a tool head assembly, which comprises the above-mentioned trimming blade with special-shaped teeth and a tool holder, a moving part, a support part and a moving cutter. The open arc hole on the trimming blade is detachably connected with the two side walls of the tool holder. The moving cutter is placed below the panel of the trimming blade and is synchronously linked with the moving part. The moving part is movably placed in the tool holder and drives the moving cutter to move along the inner surface of the panel under the action of external force. The support part is pressed on the tool holder and the moving part at two ends, so that the moving cutter always keeps in close contact with the inner surface of the panel.

[0013] Preferably, a plurality of moving cutter teeth are provided on the two sides of the moving cutter to cooperate with the cutting teeth on the two sides of the panel, and the tooth tip edge of each moving cutter tooth is arc-shaped. From the perspective of the normal projection direction of any one end of the moving cutter, the distance between the tooth tip of each moving cutter tooth and the intersection point of the first support section and the second support section of the side plate is between 0.15mm and 2mm.

[0014] Preferably, at least one guide groove is provided on the moving part, and a guide block is provided on the cutter holder, which is inserted into the guide groove to guide and limit the swinging direction of the moving part.

[0015] Preferably, the cutter holder comprises a base plate and end plates connected to the base plate at both ends, and a limiting block with a width less than or equal to the width of the end plate is arranged on the inner surface of each end plate, the upper end surface of the limiting block is lower than the upper end surface of the end plate, and a groove is arranged on the inner side of the end surface of the limiting block, the inner surface of the panel is attached to the upper end surface of the limiting block, so that the outer surface of the panel is flush with the upper end surface of the end plate, and the edges at both ends of the panel are arranged directly above the grooves.

[0016] Preferably, a swinging groove vertically penetrating the base plate is arranged at the center of the base plate, a plurality of spring seats are arranged on both sides of the swinging groove, pin holes penetrating both sides of the base plate are arranged at both ends of the base plate, a pin shaft is arranged in the pin hole, the both ends of the pin shaft are arranged outside the side wall of the base plate and inserted into the arc holes on the side plate, so that the trimming blade is detachably connected with the cutter holder, and the support is a spring, one end of which is sleeved on the spring seat, and the other end is sleeved in a spring column arranged at the bottom of the moving part, so that the outer surface of the moving cutter is always attached to the inner surface of the panel.

[0017] Preferably, the moving cutter comprises a blade-shaped moving cutter blade and a moving cutter seat, the moving cutter seat is connected with the bottom end surface of the moving cutter blade as a whole, a plurality of limiting holes are arranged on the moving cutter seat, limiting columns are arranged at the corresponding positions of the moving part, the limiting holes are sleeved on the limiting columns, so that the moving cutter seat and the moving cutter blade are synchronously displaced with the moving part, and the moving cutter teeth are arranged on the both side edges of the moving cutter blade, a plurality of interval-arranged and penetrating moving cutter blade row hair holes are arranged between the moving cutter teeth on both sides of the moving cutter blade, so that cutting blades are formed between adjacent row hair holes, and each cutting blade is located below the guide hair hole in the second shaving area of the panel.

[0018] A trimming tool comprising the cutter head assembly of any one of the above.

[0019] The present application has the following beneficial effects:

[0020] 1. By arranging the guide hair grooves on the panel and the side plate to be communicated with each other, the length of the guide hair groove is relatively increased, when trimming hair, the longer hair does not need to be preliminarily shortened by a scissors or a similar hair clipper and can directly enter the guide hair groove, the application range of the trimming blade to the hair is increased, and the trimming is no longer limited to the short hair.

[0021] 2. The cutting teeth and the supporting teeth are respectively formed between the adjacent guide hair grooves on the panel and the side plate, the supporting teeth are used to support the tooth tip end of the cutting teeth, and the bending deformation of the cutting teeth when contacting the skin is prevented, so that the hair entering the guide hair groove is prevented.

[0022] 3. By folding or bending the support teeth relative to the cutting teeth, the working strength of the cutting teeth and the support teeth is improved, and the folding or bending is used to adjust the distance between the outer surface of the side plate and the tooth tip end of the cutting teeth, so that the long hair can smoothly enter the guide groove when approaching the opening of the guide groove, the hair entering speed is accelerated, and the hair entering efficiency is improved.

[0023] 4. After the support teeth are folded or bent along the cutting teeth, the moving knife teeth are limited by the support teeth, so that the distance between the moving knife teeth and the tooth tip end of the cutting teeth is increased, the moving knife teeth are prevented from being too close to the tooth tip end of the cutting teeth to cut the skin, and the use safety of the trimming blade is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 Front view of the trimming blade with special-shaped teeth in the embodiment of the present application

[0025] Figure 2 Side view of the trimming blade with guide-shaped teeth in the embodiment of the present application

[0026] Figure 3 Perspective structural view of the trimming blade with guide-shaped teeth in the embodiment of the present application

[0027] Figure 4 Second embodiment of the trimming blade with guide-shaped teeth in the embodiment of the present application

[0028] Figure 5 Third embodiment of the trimming blade with guide-shaped teeth in the embodiment of the present application

[0029] Figure 6 Simple structure diagram of the trimming blade with guide-shaped teeth applied to a rotary shaving tool

[0030] Figure 7 Perspective structural view of the trimming head assembly in the embodiment of the present application

[0031] Figure 8 Assembly schematic view of the knife seat and the moving part in the embodiment of the present application

[0032] Figure 9 Transverse sectional structural view of the trimming head assembly in the embodiment of the present application

[0033] Figure 10 Longitudinal sectional structural view of the trimming head assembly in the embodiment of the present application

[0034] Figure 11 Perspective structural view of the moving blade in the embodiment of the present application

[0035] Figure 12 Front structural view of the moving blade in the embodiment of the present application

[0036] Figure 13 Figure 1 is a perspective view of a knife holder according to an embodiment of the present application

[0037] Figure 14 Figure 2 is a perspective view of a knife holder according to another embodiment of the present application DETAILED DESCRIPTION

[0038] The embodiments of the present application will be further described with reference to the drawings:

[0039] As shown in Figures 1-5 the present application is a trimming blade 1 with special-shaped teeth, which comprises a panel 11 in contact with the skin, the outer surface of the panel 11 being in contact with the skin surface during use, and a side plate 12 below the panel 11 for supporting the panel 11, a plurality of hair guide grooves 13 in communication with each other and arranged in intervals are respectively arranged at the panel 11 and the end of the side plate 12 close to the panel 11, in actual production, the hair guide grooves 13 are basically formed by abrasive wheel cutting, by arranging the hair guide grooves 13 in communication with each other on the panel 11 and the side plate 12, the length of the hair guide grooves 13 is relatively increased, when trimming hair, the longer hair can directly enter the hair guide grooves 13 without the need of preliminary shortening by a scissors or a similar hair clipper, thereby increasing the application range of the trimming blade 1 to hair, which is no longer limited to trimming short hair. The cutting teeth 14 and the supporting teeth 15 are respectively formed between the adjacent hair guide grooves 13 on the panel 11 and the side plate 12, the cutting teeth 14 cooperate with the moving knife teeth 511 of the moving knife 5 to cut the hair entering the hair guide grooves 13, and the supporting teeth 15 are used to support the tooth tip end of the cutting teeth 14, preventing the cutting teeth 14 from being bent and deformed to hinder the hair from entering the hair guide grooves 13 when contacting the skin. In order to increase the working strength of the cutting teeth 14 and the supporting teeth 15, the tooth tip of the supporting teeth 15 and the tooth tip of the cutting teeth 14 are in an integral structure.

[0040] Since the hair length is more than 3mm, the hair morphology will present irregular curly morphology due to the influence of static electricity, skin secreted oil and the like, and the longer the hair length, the more complex the curly morphology. With the cutting working surface 16 of the cutting tooth 14 as the reference, the tooth tip of the supporting tooth 15 is folded or bent towards the tooth root direction of the tooth tip of the cutting tooth 14, so that a spacing D is formed between the outer surface of the side plate 12 and the tooth tip edge of the cutting tooth 14. By folding or bending the supporting tooth 15 relative to the cutting tooth 14, the working strength of the cutting tooth 14 and the supporting tooth 15 is improved, and the folding or bending can also be used to adjust the spacing D between the outer surface of the side plate 12 and the tooth tip end of the cutting tooth 14. The actual spacing D is preferably as large as possible under the condition of ensuring the working strength of the trimming blade, and is not limited herein. The long hair in irregular curved morphology will not contact the outer surface of the side plate 12 when approaching the opening of the hair guide groove 13, so as to smoothly enter the hair guide groove 13, accelerate the hair entering speed and improve the hair entering efficiency. Secondly, after the supporting tooth 15 is folded or bent along the cutting tooth 14, the moving knife tooth 511 of the moving knife 5 cannot be placed at the overlapping part of the cutting tooth 14 and the supporting tooth 15 due to the limitation of the supporting tooth 15, so the distance between the moving knife tooth 511 of the moving knife 5 and the tooth tip end of the cutting tooth 14 in the face plate 11 is relatively increased. The overlapping part of the cutting tooth 14 and the supporting tooth 15 can better play the role of separating and guiding the hair, accelerate the hair entering speed, prevent the moving knife tooth 511 from being too close to the tooth tip end of the cutting tooth 14 to cut the skin, and improve the use safety of the trimming blade 1. In order to facilitate the assembly of the trimming blade 1, the other end of the side plate 12 is connected and fixed with the knife seat 2. Unlike the existing trimming blade 1, it does not need to be directly connected with the knife seat 2 by means of an additional metal support, which ensures the working strength of the trimming blade 1, facilitates production and assembly, and improves the assembly efficiency.

[0041] In the process of trimming hair, the face plate 11 needs to be directly attached to the skin surface, and therefore the thickness of the face plate 11 directly determines the residual length of the hair root on the skin surface. In order to improve the shaving effect, the thickness of at least the local region T1 of the face plate 11 where the cutting tooth 14 is arranged is less than the thickness T2 of the face plate 11. The thickness of the region of the face plate 11 where the cutting tooth 14 is arranged is set to be less than the thickness of the remaining regions of the face plate 11, so that the thickness of each cutting tooth 14 is relatively thin. In this way, the residual length of the hair root on the skin surface can be shortened to the greatest extent during hair trimming, and the trimming effect of the hair is improved. Moreover, the thickness of the remaining regions of the face plate 11 remains unchanged, which ensures the working strength of the face plate 11.

[0042] In order to accelerate the hair feeding speed of each guide groove 13 and improve the hair feeding efficiency of the trimming blade 1, each guide groove 13 on the panel 11 has at least two different tapers from the surface projection of the panel 11 contacting the skin, so that the opening width of the guide groove 13 is greater than the inner width. The guide groove 13 is provided with two sections and different tapers, compared with the guide groove 13 with the same taper, the area of the guide groove 13 can be increased, and the cutting teeth 14 between the adjacent guide grooves 13 can be prevented from being too narrow to pierce the skin. Secondly, the guide groove 13 is provided with two sections and different tapers, so that the opening width of the guide groove 13 can be maximally enlarged, the hair feeding amount of the guide groove 13 is relatively increased, and the tooth tip end of the cutting teeth 14 between the guide grooves 13 can be prevented from being too narrow to maintain a certain width, so that each cutting tooth 14 can separate the hair more quickly when inserted into the hair cluster.

[0043] In order to increase the hair feeding amount of the guide groove 13 and prevent the tooth tip end of the cutting teeth 14 from being too narrow to pierce the skin, the guide groove 13 on the panel 11 includes an inner cutting groove 131 arranged inside the panel 11 and an outer guide groove 132 arranged at the edge of the panel 11. The inner cutting groove 131 is used to cooperate with the cutter tooth 511 of the cutter 5 to cut the hair, and the outer guide groove 132 is used to separate the hair so that the hair can quickly enter the inner cutting groove 131. Taking the central axis of the guide groove 13 as the reference, the inner cutting groove 131 is tapered from small to large, and the taper ∠1 is 1°-10°. The larger the taper, the larger the capacity of the inner cutting groove 131, and the hair feeding amount of each cutting tooth 14 is relatively increased. However, the width of the cutting teeth 14 between the adjacent guide grooves 13 is limited. If the taper of the inner cutting groove 131 is too large, the tooth tip end of the cutting teeth 14 will be too narrow or even form a sharp angle, which will pierce the skin. Therefore, the taper of the inner cutting groove 131 is 6°±1°, which is the preferred embodiment. In order to improve the hair feeding speed of the inner cutting groove 131, the taper ∠2 of the outer guide groove 132 is 1.2-4 times larger than the taper ∠1 of the inner cutting groove 131, preferably 2 times, so that the opening width of the outer guide groove 132 is greater than the width of the inner cutting groove 131. When the taper of the outer guide groove 132 is larger than the taper of the inner cutting groove 131, the opening of the guide groove 13 is relatively wide, which can increase the hair feeding amount and accelerate the hair feeding into the guide groove 13, and can minimize the width of the tooth tip end of the cutting teeth 14 to prevent the cutting teeth 14 from forming a sharp tooth to pierce the skin, so that the tooth tip of the cutting teeth 14 can separate and guide the hair at a certain width. In order to improve the hair separation and guiding effect of the cutting teeth 14, the length L1 of the outer guide groove 132 is less than or equal to one third of the total length L2 of the guide groove 13, so that the length of the outer guide groove 132 is the same as the length of the supporting tooth 15 folded or bent along the tooth tip of the cutting tooth 14 during the production process.

[0044] In order to facilitate the production and assembly of the trimming blade 1 and reduce the space occupied by the trimming blade 1 during assembly, the side plate 12 comprises a first support section 121, a second support section 122, a third support section 123 and a base support section 124 connected in sequence from top to bottom and bent and formed in sequence at different angles, which can significantly improve the working strength of the trimming blade 1, and the base support section 124 can realize the connection and fixation of the trimming blade 1 and the blade seat 2 without the help of a metal support, thereby improving the assembly benefit. The hair guide groove 13 is arranged on the first support section 121, the second support section 122 and the third support section 123, which can relatively lengthen the length of the hair guide groove 13, so that the hair in irregular curly shape can directly enter the hair guide groove 13, without needing to be first cut short by a scissors or hair clipper before trimming, thereby improving the versatility of the trimming blade 1. When the hair guide groove 13 is formed in the first support section 121, the second support section 122 and the third support section 123 of the side plate 12, the support teeth 15 are also correspondingly formed in the first support section 121, the second support section 122 and the third support section 123, the first support section 121 is directly connected with the cutting tooth 14 to form the tooth tip of the support tooth 15, and the thickness of the first support section 121 is less than or equal to that of the remaining support sections; taking the cutting working surface 16 of the cutting tooth 14 on the panel 11 as a reference, the first support section 121 is arranged in a gap horizontal manner relative to the cutting working surface 16 to form a folded shape, and a certain gap is arranged between the cutting tooth 14 and the first support section 121, so that when the hair clumps are inserted, the hair can directly pass through the gap between the cutting tooth 14 and the first support section 121, without being clamped, thereby ensuring the use comfort of the trimming blade 1. Of course, the first support section 121 can also be arranged in an inclined bent manner along the cutting working surface 16 of the cutting tooth 14, so that the space between the cutting working surface 16 of the cutting tooth 14 and the first support section 121 is larger, but the total height between the cutting tooth 14 and the support tooth 15 is relatively increased, which is not conducive to the separation and introduction of the hair into the hair guide groove 13, therefore, the tooth tip of the support tooth 15, i.e. the first support section 121, is arranged in a folded gap horizontal manner relative to the cutting tooth 14, which is the preferred embodiment. In order to improve the separation and introduction effect of the hair of the cutting tooth 14 and prevent the moving knife 5 from cutting the skin, the length of the first support section 121 is greater than or equal to twice the thickness of the panel 11 or the side plate 12, in the actual production process, the side plate 12 and the panel 11 are integrated, the first support section 121 and the cutting tooth 14 are folded, a piece of spacer plate is placed between the first support section 121 and the cutting working surface 16 of the cutting tooth 14 during folding, and the spacer plate is extracted after folding to form a gap between the first support section 121 (i.e. the tooth tip of the support tooth 15) and the cutting tooth 14, and the size of the gap is determined by the thickness of the spacer plate.

[0045] Since the moving blade 5 is in contact with the cutting working surface 16 of the cutting tooth 14 to cut the hair entering the hair guide groove 13, the second support section 122 and the third support section 123 form an angle ∠3, and the angle ∠3 is less than 180 degrees. The specific angle is determined according to the shape of the moving blade tooth 511, and the setting rule is to avoid interference with the movement of the moving blade tooth 511 along the cutting working surface 16 of the cutting tooth 14. In order to reduce the space occupied by the trimming blade 1 during assembly, the base support section 124 is perpendicular to the cutting working surface 16 of the panel 11, so that the outer surface of the side plate 12 is relatively contracted to the edge of the panel 11. In order to facilitate the assembly of the trimming blade 1, an arc-shaped hole 125 is provided at the bottom of the base support section 124, which is connected with the knife holder 2 in a detachable manner. During assembly, the pin shaft 28 provided on the knife head is inserted into the arc-shaped hole 125 to detachably connect the trimming blade 1 with the knife holder 2.

[0046] The technical scheme of the trimming blade 1 described above can be applied to reciprocating shavers or hair trimmers, and can also be applied to rotary shavers or hair trimmers. When the trimming blade 1 is applied to the reciprocating shaver or hair trimmer, the panel 11 is square, the side plate 12 is provided with two plates respectively arranged on both sides of the panel 11, one end of which is connected with the inner surface of the panel 11 as a whole to support the panel 11, and the other end is connected with the knife holder 2 to be fixed. The hair guide groove 13 is linearly arranged along the two side edges of the panel 11. When the trimming blade 1 is applied to the rotary shaver or hair trimmer, the panel 11 is circular, and the side plate 12 is in the form of a circular ring with a diameter smaller than that of the panel 11. One end of the side plate 12 is connected with the inner surface of the panel 11 as a whole, and the other end is connected with the knife holder 2 to be fixed. The hair guide groove 13 is circularly arranged along the outer circumferential edge of the panel 11.

[0047] When the trimming blade 1 is applied to a reciprocating shaver or shaver, the arrangement length of the plurality of hair guide grooves 13 on both sides of the face plate 11 is less than the length of the face plate 11, so that the ends of the face plate 11 form reinforcing portions 126, respectively, in which the hair guide grooves 13 and the cutting teeth 14 are not arranged, preventing the hair guide grooves 13 from being arranged too close to the ends of the face plate 11, which causes the trimming blade 1 to deform during operation, affecting the hair trimming effect. In actual production, the cross-sectional shape of the reinforcing portion 126 can be the same as the cross-section of the cutting teeth 14 in the side plate 12, that is, the side plate 12 of the reinforcing portion 126 also has a multi-bending shape, such as also having a first support section 121, a second support section 122, a third support section 123, and a base support section 124. Of course, the cross-section of the reinforcing portion 126 can also be different from the cross-section of the cutting teeth 14 arranged in the side plate 12. For example, the side plate 12 of the reinforcing portion 126 is arc-shaped at the connection with the face plate 11, and does not have a folding feature, while the side plate 12 itself only has a mutual connection and support section and a base section. Compared with the tooth tip structure of the folding cutting teeth 14 and the support teeth 15, the strength of the ends of the face plate 11 can be better, but since the side plate 12 has two different types, it is not conducive to production and processing, and therefore, the cross-section of the side plate 12 of the reinforcing portion 126 is preferably the same as the cross-section of the cutting teeth 14.

[0048] When the trimming blade 1 is applied to a reciprocating shaver or shaver, the arrangement length of the plurality of hair guide grooves 13 on both sides of the face plate 11 is less than the length of the face plate 11, so that the ends of the face plate 11 form reinforcing portions 126, respectively, in which the hair guide grooves 13 and the cutting teeth 14 are not arranged, preventing the hair guide grooves 13 from being arranged too close to the ends of the face plate 11, which causes the trimming blade 1 to deform during operation, affecting the hair trimming effect. In actual production, the cross-sectional shape of the reinforcing portion 126 can be the same as the cross-section of the cutting teeth 14 in the side plate 12, that is, the side plate 12 of the reinforcing portion 126 also has a multi-bending shape, such as also having a first support section 121, a second support section 122, a third support section 123, and a base support section 124. Of course, the cross-section of the reinforcing portion 126 can also be different from the cross-section of the cutting teeth 14 arranged in the side plate 12. For example, the side plate 12 of the reinforcing portion 126 is arc-shaped at the connection with the face plate 11, and does not have a folding feature, while the side plate 12 itself only has a mutual connection and support section and a base section. Compared with the tooth tip structure of the folding cutting teeth 14 and the support teeth 15, the strength of the ends of the face plate 11 can be better, but since the side plate 12 has two different types, it is not conducive to production and processing, and therefore, the cross-section of the side plate 12 of the reinforcing portion 126 is preferably the same as the cross-section of the cutting teeth 14.

[0049] As Figures 5-12As shown, on the basis of the above-mentioned trimming blade 1 with special-shaped teeth, the applicant also proposes a technical solution of a cutter head assembly, which comprises the above-mentioned trimming blade 1 with special-shaped teeth and a cutter seat 2, a moving part 3, a supporting part 4 and a moving cutter 5. The optimal-arc hole 125 on the trimming blade 1 is detachably connected with the two side walls of the cutter seat 2. Of course, the side plate 12 of the trimming blade 1 can be connected and fixed with the side walls of the cutter seat 2 in a welding or plug-in manner. The cutter seat 2 is detachably connected and fixed with the body (not shown in the figure) of the shaving tool. The cutter seat 2 and the body are detachably connected, which is convenient for the overall cleaning or replacement of the cutter head assembly. The moving cutter 5 is arranged below the face plate 11 of the trimming blade 1 and is synchronously linked with the moving part 3. The moving part 3 is movably arranged in the cutter seat 2 and is driven by the output shaft of the motor installed in the body to drive the moving cutter 5 to move along the inner surface of the face plate 11. The moving mode can be reciprocating or rotating. The supporting part 4 is respectively pressed on the cutter seat 2 and the moving part 3 at both ends, so that the moving cutter 5 and the inner surface of the face plate 11 always remain in close contact. This not only can prevent the moving cutter 5 from jumping, which leads to the technical defects such as pulling and tearing hair, affecting the shaving comfort; and when the face plate 11 is bent and deformed under the reaction force of the hand pressing the body after contacting the skin, the supporting part 4 can be synchronously displaced downward to leave a buffer space, preventing the trimming blade 1 and the moving cutter 5 from being damaged under stress, improving the use safety of the trimming blade 1 and the moving cutter 5 and prolonging the service life of the cutter head assembly.

[0050] In the process of trimming hair, the cutting teeth 14 on the face plate 11 are stationary and need to cooperate with the moving cutter teeth 511 arranged on both sides of the moving cutter 5. In order to prevent the moving cutter teeth 511 from cutting the skin during the process of trimming hair, the tooth tip edge of each moving cutter tooth 511 is arc-shaped and the end face is inclined. From the perspective of the normal projection direction of any end of the moving cutter 5, the distance L3 between the tooth tip of each moving cutter tooth 511 and the intersection point P of the first supporting section 121 and the second supporting section 122 of the side plate 12 is between 0.15mm and 2mm, preferably 0.5mm. By increasing the distance between the tooth tip of the moving cutter tooth 511 and the intersection point P of the first supporting section 121 and the second supporting section 122, the moving cutter tooth 511 can be relatively far away from the opening of the hair guide groove 13. During the process of trimming hair, the moving cutter tooth 511 can avoid cutting the skin, thereby improving the use safety of the cutter head assembly.

[0051] The moving member 3 is driven by a motor shaft mounted within the housing to move the movable blade 5 along the inner surface of the panel 11 of the trimming blade 1. To prevent misalignment or deviation that could affect hair cutting performance, at least one guide slot 31 is provided on the moving member 3, and a guide block 211 is provided on the blade holder 2. The guide block 211 inserts into the guide slot 31 to guide and restrict the direction of movement of the moving member 3. The cooperation between the guide slot 31 and the guide block 211 effectively ensures the operational stability of the movable blade 5 and the trimming blade 1, preventing misalignment and deviation, and improving the hair cutting performance of the cutter head assembly. Alternatively, guide rails could be provided on the inner surface of the panel 11 of the trimming blade 1, and guide slots could be provided on the movable blade 5. The cooperation between the guide rails and the guide slots would also achieve the same purpose and effect. However, since the guide slots 31 and the guide blocks 211 provided on the blade holder 2 and moving member 3 are easier to manufacture, process, and assemble, this embodiment is the preferred embodiment.

[0052] When the trimming blade 1 is used in a reciprocating razor, the superior arc holes 125 on the side panels 12 of the panel 11 are used to detachably connect the trimming blade 1 to the blade holder 2. To enhance the assembly firmness and working strength of the panel 11, the blade holder 2 includes a base plate 21 and end plates 22 disposed at both ends of the base plate 21 and integrally connected to the base plate 21. A stopper 23 having a width less than or equal to the width of the end plate 22 is provided on the inner surface of each end plate 22. The upper end surface of the stopper 23 is lower than the upper end surface of the end plate 22, and a groove 24 is provided on the inner side of the end surface of the stopper 23. The inner surface of the panel 11 is aligned with the upper end surface of the stopper 23 so that the outer surface of the panel 11 is flush with the upper end surface of the end plate 22, and the edges of the panel 11 are directly above the groove 24. The provision of the end plates 22 protects the trimming blade 1 during assembly, preventing damage to the trimming blade 1 from external factors and preventing the edges of the trimming blade 1 from cutting the skin. A stopper 23 is provided on the inner surface of the end plate 22. During assembly, the inner surfaces of the trimming blade 1 at both ends (i.e., the inner surface of the panel) can be placed directly above the stopper 23. The stopper 23 limits the position of the trimming blade 1 to prevent displacement that would affect hair trimming performance. It also supports the panel 11 of the trimming blade 1, thereby improving the working strength of the connection between the trimming blade 1 and the blade holder 2. A groove 24 is provided on the inner side of the upper end surface of the stopper 23. The burrs generated at the edges of the trimming blade 1 during the cutting process can be placed in the groove 24. This does not affect the outer surface of the trimming blade 1 from protruding above the upper end surface of the end plate 22, thereby improving the overall aesthetics of the cutter head assembly.

[0053] For the detachable connection of the trimming blade 1 and the blade holder 2 and the installation and fixation of the supporting member 4, the oscillation groove 25 vertically penetrating the base plate 21 is arranged at the center of the base plate 21, and a plurality of spring seats 26 are arranged at both sides of the oscillation groove 25, and the pin hole 27 penetrating both sides of the base plate 21 is arranged at both ends of the base plate 21, and the pin shaft 28 is arranged in the pin hole 27 and the both ends of the pin shaft 28 are arranged outside the side wall of the base plate 21 and inserted into the optimal arc hole 125 on the side plate 12, so that the trimming blade 1 is detachably and fixedly connected with the blade holder 2. Of course, the pin hole 27 can not be arranged, for example, the pin column protruding from the side wall is arranged on both side walls of the blade holder 2, and the optimal arc hole 125 can be directly clamped outside the pin column, so that the side plate 12 of the trimming blade 1 is detachably and fixedly connected with the blade holder 2. And the supporting member 4 is a spring, one end of which is sleeved on the spring seat 26 arranged on the base plate 21, and the other end is sleeved on the spring column 32 arranged at the bottom of the moving member 3, so that the outer surface of the moving blade 5 always keeps in close contact with the inner surface of the face plate 11.

[0054] In order to reduce the production cost of the cutter head assembly, the moving blade 5 includes the blade-shaped moving blade 51 and the moving blade holder 52, the moving blade tooth 511 is arranged in the moving blade 51, and the moving blade holder 52 is integrally connected with the bottom end surface of the moving blade 51, and the integral connection of the moving blade 51 and the moving blade holder 52 can be realized by welding, bonding or clamping and the like. A plurality of limiting holes 521 are arranged on the moving blade holder 52, and the limiting column 33 is arranged at the corresponding position of the moving member 3, the limiting hole 521 is sleeved on the limiting column 33, so that the moving blade holder 52 and the moving blade 51 are synchronously displaced with the moving member 3, and the limiting hole 521 arranged on the moving blade holder 52 and the limiting column 33 arranged on the moving member 3 are cooperated, so that the synchronous nature of the moving blade 5 and the moving member 3 can be ensured while the assembly is facilitated. Since the second shaving area 17 is arranged on the face plate 11 of the trimming blade 1, in order to cut the hair entering the second shaving area 17, the moving blade tooth 511 is arranged at the two side edges of the moving blade 51, and a plurality of spacing and penetrating moving blade 51 hair arranging holes 512 are arranged between the moving blade teeth 511 at both sides of the moving blade 51, so that the cutting piece 513 is formed between the adjacent hair arranging holes 512, each cutting piece 513 is located below the hair guide hole 171 of the second shaving area 17 of the face plate 11, and each cutting piece 513 cooperates with the second shaving area 17 to cut the hair entering the hair guide hole 171 to realize fine trimming.

[0055] A trimming tool, comprising the cutter head assembly of any one of the above.

[0056] The above embodiments should not be regarded as limitation of the present application, but any improvement based on the spirit of the present application should be within the protection scope of the present application.

Claims

1. A trimming blade with special-shaped teeth, comprising a panel (11) in contact with the skin and a side panel (12) located below the panel (11) for supporting the panel (11), characterized in that A plurality of guide grooves (13) are provided on the panel (11) and the side panel (12) at one end thereof close to the panel (11), and are interconnected and arranged at intervals. Cutting teeth (14) and supporting teeth (15) are formed between adjacent guide grooves (13) on the panel (11) and the side panel (12), respectively. The tooth tips of the supporting teeth (15) are connected to the tooth tips of the cutting teeth (14) as a whole. With the cutting working surface (16) of the cutting teeth (14) as a reference, the tooth tips of the supporting teeth (15) are folded and formed with the tooth tips of the cutting teeth (14) as a starting point toward the tooth roots of the cutting teeth (14), so that a distance D is formed between the outer surface of the side panel (12) and the tooth tip edges of the cutting teeth (14). The other end of the side panel (12) is connected and fixed to the knife seat (2), wherein the side panel (12) comprises a first supporting section (16) connected in sequence from top to bottom. 21), a second support section (122), a third support section (123) and a base support section (124); the hair guide groove (13) is arranged on the first support section (121), the second support section (122) and the third support section (123), so that the support teeth (15) are formed in the first support section (121), the second support section (122) and the third support section (123); the first support section (121) constitutes the tooth tip of the support teeth (15) and the thickness of the first support section (121) is smaller than that of the other support sections; with the cutting working surface (16) of the cutting teeth (14) on the panel (11) as a reference, the first support section (121) is horizontally arranged relative to the cutting working surface (16) in a folded shape, and the length of the first support section (121) is greater than or equal to twice the thickness of the panel (11) or the side panel (12).

2. The trimming blade with special-shaped teeth according to claim 1, characterized in that The thickness T1 of at least a local area of ​​the panel (11) where the cutting teeth (14) are provided is smaller than the thickness T2 of the panel (11).

3. The trimming blade with special-shaped teeth according to claim 1, characterized in that From the orthographic projection of the outer surface of the panel (11) in contact with the skin, each hair guide groove (13) on the panel (11) has at least two different tapers, so that the opening width of the hair guide groove (13) is greater than the inner width.

4. The trimming blade with special-shaped teeth according to claim 3, characterized in that The hair guide groove (13) on the panel (11) comprises an inner groove (131) disposed inside the panel (11) and an outer groove (132) disposed at the edge of the panel (11). With the central axis of the hair guide groove (13) as a reference, the inner groove (131) is tapered with a smaller inner portion and a larger outer portion, and a taper ∠1 thereof is between 1° and 10°. The taper ∠2 of the outer groove (132) is 1.2 to 4 times the taper ∠1 of the inner groove (131), and the length L1 of the outer groove (132) is less than or equal to one third of the total length L2 of the hair guide groove (13).

5. The trimming blade with special-shaped teeth according to claim 1, characterized in that The second support section (122) and the third support section (123) form an included angle ∠3, and the included angle ∠3 is less than 180 degrees; the basic support section (124) is perpendicular to the cutting working surface (16) of the panel (11), and an open-shaped superior arc hole (125) is provided at the bottom of the basic support section (124) so ​​that it can be detachably fixedly connected to the knife seat (2).

6. The trimmer blade with special-shaped teeth according to claim 1, characterized in that The panel (11) is square in shape, and the side panels (12) are provided with two pieces respectively arranged on both sides of the panel (11), one end of which is connected to the inner surface of the panel (11) as a whole to support the panel (11), and the other end is connected and fixed to the knife seat (2), and the hair guide grooves (13) are arranged on the upper edges of the panel (11) and the side panels (12) in a linear array.

7. The trimmer blade with special-shaped teeth according to claim 6, characterized in that The arrangement length of the plurality of hair guide grooves (13) on both sides of the panel (11) is shorter than the length of the panel (11), so that reinforcement parts (126) are respectively formed at both ends of the panel (11), and the cross-sectional shape of the reinforcement part (126) is the same as or different from the cross-sectional shape of the cutting teeth (14).

8. The trimmer blade with special-shaped teeth according to claim 6, characterized in that At least a second shaving area (17) consisting of a plurality of shaving holes (171) penetrating the panel (11) is provided between the hair guide grooves (13) on both sides of the panel (11). The thickness of the second shaving area (17) is less than the thickness of the panel (11) and is the same as the thickness of the area where the cutting teeth (14) are provided on both sides of the panel (11).

9. A cutter head assembly, characterized in that The invention comprises a trimming blade (1) with special-shaped teeth as claimed in any one of claims 1 to 8, a blade holder (2), a moving part (3), a support part (4) and a movable knife (5), wherein the superior arc hole (125) on the trimming blade (1) is detachably connected to the two side walls of the blade holder (2); the movable knife (5) is placed below the panel (11) of the trimming blade (1) and is synchronously linked with the moving part (3); the moving part (3) is movably placed in the blade holder (2) and drives the movable knife (5) to move along the inner surface of the panel (11) under the action of an external force; the two ends of the support part (4) are respectively pressed against the blade holder (2) and the moving part (3) so that the movable knife (5) always keeps in contact with the inner surface of the panel (11).

10. The cutter head assembly according to claim 9, characterized in that A plurality of movable blade teeth (511) are provided on both sides of the movable blade (5) to cooperate with the cutting teeth (14) on both sides of the panel (11), and the tooth tip edge of each movable blade tooth (511) is arc-shaped; when viewed from the positive projection direction of either end of the movable blade (5), the distance L3 between the tooth tip of each movable blade tooth (511) and the intersection point P of the first supporting section (121) and the second supporting section (122) of the side panel (12) is between 0.15 mm and 2 mm.

11. The cutter head assembly according to claim 9, characterized in that At least one guide groove (31) is provided on the moving part (3), and a guide block (211) is provided on the knife seat (2). The guide block (211) is inserted into the guide groove (31) to guide and limit the moving direction of the moving part (3).

12. The cutter head assembly according to claim 9, characterized in that The knife seat (2) includes a base plate (21) and end plates (22) placed at both ends of the base plate (21) and connected to the base plate (21) as a whole. A limit block (23) with a width less than or equal to the width of the end plate (22) is provided on the inner surface of each end plate (22). The upper end surface of the limit block (23) is lower than the upper end surface of the end plate (22) and a groove (24) is provided on the inner side of the end surface of the limit block (23). The inner surface of the panel (11) is fitted with the upper end surface of the limit block (23) so that the outer surface of the panel (11) is flush with the upper end surface of the end plate (22), and the edges of the two ends of the panel (11) are placed directly above the groove (24).

13. A cutter head assembly according to claim 12, characterized in that A swing groove (25) vertically penetrating the base plate (21) and a plurality of spring seats (26) arranged on both sides of the swing groove (25) are provided at the center of the base plate (21); pin holes (27) penetrating both sides of the base plate (21) are respectively provided at both ends of the base plate (21); a pin shaft (28) is placed in the pin hole (27); its two ends are placed outside the side wall of the base plate (21) and inserted into the superior arc hole (125) on the side plate (12), so that the trimming blade (1) is detachably fixedly connected to the blade seat (2); the support member (4) is a spring, one end of which is sleeved on the spring seat (26) and the other end is sleeved on the spring column (32) arranged at the bottom of the moving member (3), so that the outer surface of the moving knife (5) always keeps in contact with the inner surface of the panel (11).

14. The cutter head assembly according to claim 9, characterized in that The movable blade (5) comprises a sheet-shaped movable blade (51) and a movable blade seat (52). The movable blade seat (52) is connected to the bottom end surface of the movable blade (51) as a whole. A plurality of limiting holes (521) are provided on the movable blade seat (52). A limiting column (33) is provided at a corresponding position of the moving part (3). The limiting hole (521) is sleeved on the limiting column (33) so that the movable blade seat (52) and the movable blade (51) are synchronously displaced with the moving part (3); movable blade teeth (511) are provided on both side edges of the movable blade (51), and a plurality of hair removal holes (512) are provided between the movable blade teeth (511) on both sides of the movable blade (51) and penetrate the movable blade (51), so that a cutting piece (513) is formed between adjacent hair removal holes (512). Each cutting piece (513) is located below the hair guide hole (171) of the second shaving area (17) in the panel (11).

15. A pruning tool, characterized in that A cutter head assembly comprising any one of claims 9 to 14.

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