CN220162514U

CN220162514U - Trimming blade with special-shaped teeth

Info

Publication number: CN220162514U
Application number: CN202321944901.7U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: ZHEJIANG HAISHUN ELECTRICAL CO Ltd
Current assignee: ZHEJIANG HAISHUN ELECTRICAL CO Ltd
Priority date: 2023-07-22
Filing date: 2023-07-22
Publication date: 2023-12-12
Anticipated expiration: 2033-07-22

Abstract

The utility model relates to a trimming blade with special-shaped teeth, which is characterized in that one side of each side tooth, which is close to a cutting tooth, is provided with a blade edge, wherein the blade edge comprises at least two line segments which are sequentially connected and extend from the opening end of a static tooth slot to the bottom of the static tooth slot, and an included angle < 1 > is formed between at least two line segments of the blade edge by taking the central axis of the static tooth slot as a reference, so that the width of an intersection point P between the opening end of the static tooth slot and the two line segments of the blade edge is narrowed. The utility model has the beneficial effects that the cutting edge of the side tooth is changed from a straight line or an oblique line into at least two line segments, and an included angle 1 is formed between the two line segments, so that the distance between the cutting edge from the opening end of the static tooth slot to the intersection point P of the two line segments is narrowed from wide. The time that the hair enters the bottom of the static tooth slot is effectively delayed, the blocking effect is achieved, the time is strived for by swinging cutting of the movable cutter, the hair can be cut off by the cutting teeth of the movable cutter before entering the bottom of the static tooth slot, the hair is effectively prevented from entering the bottom of the static tooth slot, and the phenomena of napping or clamping hair are prevented.

Description

Trimming blade with special-shaped teeth

Technical Field

The utility model relates to a hair trimming component, in particular to a trimming blade with special-shaped teeth, which is mainly applied to tools such as a hair trimmer, a shaver or a shaver.

Background

The trimming blade is a main component for trimming a head of a hair clipper, a shaver or a shaver, and is mainly divided into a stationary blade for guiding and catching hair and a movable blade for cutting hair, which is reciprocally swung along the stationary blade.

The existing static knife is shown in fig. 1, a plurality of cutting teeth (2) are arranged on one side of a blade body (1) at intervals, an opening-shaped static tooth groove (3) is formed between every two adjacent cutting teeth (2), edge teeth (4) which are prevented from deforming and have a wider width are respectively arranged on the outermost sides of two ends of the blade body (1), the width of each edge tooth (4) is larger than that of other cutting teeth (2), and a cutting edge (5) is arranged on one side, close to the cutting teeth (2), of each edge tooth (4) and is matched with the cutting teeth on the moving knife so as to cut hair entering the static tooth groove (3).

Because the cutting edge (5) on the existing edge tooth (4) is basically straight line or oblique line, when the movable knife swings along the single side of the static knife, the static tooth slot (3) between the edge tooth (4) and the cutting tooth (2) at one end of the static knife in the opposite swinging direction can be in a completely open state. At this time, the hair can quickly enter the groove bottom of the static tooth groove (3) without any obstacle. The length of the cutting teeth of the existing movable cutter is shorter than the depth of the static tooth grooves (3) between the adjacent cutting teeth (2) on the static cutter, hair entering the bottoms of the static tooth grooves (3) cannot be cut off by the cutting teeth of the passive cutter, and the movable cutter is very easy to be clamped between the end faces of the movable cutter and the static cutter, which are mutually attached, due to the fact that the movable cutter is clamped into the middle area of the static cutter when the movable cutter swings reciprocally along the static cutter, the phenomenon of pulling or clamping hair is caused, the skin is caused to produce pulling pain, and the use comfort of the trimming cutter head is reduced.

Disclosure of Invention

In order to solve the above technical problems; the utility model provides a trimming blade with special-shaped teeth, which can greatly delay the time for hair to enter into the outermost static tooth grooves at two ends of a static cutter, prevent the hair from entering into the bottoms of the static tooth grooves, strive for time for the swing cutting of a movable cutter, ensure that the hair is cut off before entering into the bottoms of the static tooth grooves, effectively avoid the hair from entering into the bottoms of the outermost static tooth grooves at two ends of the static cutter, prevent the phenomena of napping or clamping hair, and improve the use comfort of a hair trimming cutter head.

In order to solve the technical problems, the technical scheme adopted by the utility model is that the trimming blade with the special-shaped teeth comprises a blade body, wherein the blade body is provided with side teeth at two end edges and a plurality of cutting teeth arranged between the two side teeth at intervals, and an open static tooth slot is formed between two adjacent teeth; each side tooth is close to one side of the cutting tooth and is provided with a cutting edge which comprises at least two line segments which are connected in sequence and extend from the opening end of the static tooth groove to the bottom of the static tooth groove, an included angle 1 is formed between the at least two line segments of the cutting edge by taking the central axis of the static tooth groove as a reference, and the cutting edge is narrowed from wide to narrow at the intersection point P between the opening end of the static tooth groove and the two line segments.

Preferably, at least two line segments on the edge are straight lines, curved lines or a combination thereof.

Preferably, the central axis of the static tooth slot is taken as a reference, the horizontal linear distance between the upper vertex of one line segment, close to the opening end of the static tooth slot, of at least two line segments on the edge and the central axis is L1, and the horizontal linear distance between the intersection point P of the two line segments and the central axis is L2, wherein L1 is more than or equal to L2 x (1.5-5).

Preferably, the included angle between at least two line segments on the edge is less than 1, and the angle range is as follows: 180 DEG > < 1 > 90 deg.

Preferably, the edge of each side tooth at least comprises a first line segment and a second line segment, the intersection point P of the first line segment and the second line segment is positioned below the tooth tip of the cutting tooth, the central axis of the static tooth slot is used as a reference, the included angle 2 between the first line segment and the central axis is larger than the included angle 3 between the second line segment and the central axis, and the edge is narrowed from the opening end of the static tooth slot to the intersection point P of the first line segment and the second line segment.

Preferably, the first line segment and the second line segment are respectively straight lines, and the joints of the two ends of the first line segment and the second line segment are respectively smooth transition.

The utility model has the beneficial effects that the cutting edge of the side tooth is changed from a straight line or an oblique line into at least two line segments, and an included angle 1 is formed between the two line segments, so that the distance between the cutting edge from the opening end of the static tooth slot to the intersection point P of the two line segments is narrowed from wide. The hair trimming cutter has the advantages that the hair trimming cutter is affected by the width narrowing between the edge and the central axis of the static tooth groove, the time for the hair to enter the bottom of the static tooth groove can be effectively delayed, the effect of blocking the hair is achieved, the time is strived for the swing cutting of the movable cutter, the hair can be cut off by the cutting teeth of the passive cutter before entering the bottom of the static tooth groove, the hair is effectively prevented from entering the bottom of the static tooth groove at the outermost part of the two ends of the static cutter, the phenomena of napping or clamping hair are prevented, and the use comfort of the hair trimming cutter head is improved.

Drawings

FIG. 1 is a front view of a conventional trimming blade

FIG. 2 is a front view of a trimming blade having profiled teeth according to an embodiment of the present utility model

FIG. 3 is an enlarged view of the portion K of FIG. 2

FIG. 4 is a perspective view of a trimming blade with shaped teeth according to the novel embodiment

FIG. 5 is a schematic view showing the assembly of a trimming blade having shaped teeth according to the embodiment of the present utility model

FIG. 6 is a schematic view illustrating the processing of a static tooth slot according to an embodiment of the present utility model

Detailed Description

Embodiments of the utility model are further described below with reference to the accompanying drawings:

as shown in fig. 1-6, the present utility model is a trimming blade with profiled teeth, which is actually a stationary blade, which is stationary during operation, requiring cooperation of a moving blade to effect trimming of hair. The cutter comprises a cutter body 11, wherein edge teeth 12 at two end parts and a plurality of cutting teeth 13 arranged at intervals between the two edge teeth 12 are arranged on the cutter body 11, an open static tooth groove 14 is formed between two adjacent teeth, the two adjacent teeth are arranged at intervals between the edge teeth 12 and the cutting teeth 13 and between the cutting teeth 13 and the cutting teeth 13, the interval distance is the static tooth groove 14 and is used for separating and capturing hair, and the movable cutter 10 is convenient for cutting the hair when swinging reciprocally along the end face of the cutting cutter. Each of the side teeth 12 has a blade edge 15 on a side thereof adjacent to the cutting tooth 13, and the blade edge 15 cooperates with the blade edge of the cutting tooth 13 of the movable blade 10 to cut hair entering the stationary tooth slot 14. Since the edge 15 of the edge teeth 12 at the two end parts of the existing trimming blade is basically straight or oblique, when the movable blade 10 swings along the single side of the static blade, the static tooth slot 14 between the edge teeth 12 at one end of the static blade, which is opposite to the swinging direction, and the cutting tooth 13 is in a completely open state, and the hair can enter the slot bottom of the static tooth slot 14 quickly without any obstacle. The length of the cutting teeth 13 of the conventional movable cutter 10 is shorter than the depth of the static tooth grooves 14 between the adjacent cutting teeth 13 on the static cutter, so that hairs entering the bottoms of the static tooth grooves 14 cannot be cut off by the cutting teeth 13 of the movable cutter 10, and when the movable cutter 10 swings reciprocally along the static cutter, the hairs are easily brought into the middle area of the static cutter and clamped between the end surfaces of the movable cutter 10 and the static cutter, which are mutually attached to each other, so that the phenomena of hair pulling or hair clamping are caused, and the skin is caused to produce a pulling pain feeling. In order to solve the problem that when the movable cutter 10 swings along a single side of the stationary cutter, a stationary tooth slot 14 between a side tooth 12 and a cutting tooth 13, which are opposite to one end of the blade body 11 in the swinging direction, is in a completely open state, so that hair quickly enters the slot bottom of the stationary tooth slot 14 without any obstacle, and phenomena such as napping or hair clamping easily occur, the cutting edge 15 on the side tooth 12 comprises at least two line segments which are sequentially connected and extend from the open end of the stationary tooth slot 14 to the slot bottom of the stationary tooth slot 14, an included angle 1 is formed between the at least two line segments of the cutting edge 15 by taking the central axis 16 of the stationary tooth slot 14 as a reference, and the intersection point P between the open end of the stationary tooth slot 14 and the two line segments of the cutting edge 15 is narrowed from wide. The cutting edge 15 of the edge tooth 12 is changed from a straight line or oblique line into at least two line segments, an included angle 1 is formed between the two line segments, so that the distance between the cutting edge 15 from the opening end of the static tooth groove 14 to the intersection point P of the two line segments is narrowed from wide, the influence of the narrowing of the width between the cutting edge 15 and the central axis 16 of the static tooth groove 14 can effectively delay the time of the hair entering the bottom of the static tooth groove 14, and the effect of blocking the hair is achieved. The motor of the existing shaver or hair clipper rotates up to 8000 revolutions per minute, the movable cutter 10 can reciprocate along the trimming blade for more than 15000 times per minute under the drive of the eccentric shaft, and the time for the swinging cutting of the movable cutter 10 is strived for in the time for delaying the hair to enter the bottom of the static tooth slot 14, so that the hair can be cut off by the cutting teeth 13 of the movable cutter 10 before entering the bottom of the static tooth slot 14, the hair is prevented from entering the bottom of the static tooth slot 14 between the side teeth 12 and the cutting teeth 13, the phenomenon of napping or clamping hair is prevented, and the use comfort of the hair trimming device is improved.

In order to delay the time of the hair entering the groove of the static tooth groove 14 and prevent the hair from entering the groove bottom of the static tooth groove 14 quickly, at least two line segments on the blade edge 15 can be selected as straight lines, curves or combination of straight lines and curves, as long as an included angle is formed between the two line segments and the position from the opening end of the static tooth groove 14 to the intersection point P of the two line segments is narrowed from wide, and the purpose of preventing the hair from entering the groove bottom of the static tooth groove 14 quickly is achieved.

In order to delay the time of entering the slot of the static slot 14, the quick entering of the hair into the slot bottom of the static slot 14 is blocked, the central axis 16 of the static slot 14 is taken as a reference, the horizontal straight line distance between the upper vertex of one line segment, which is close to the opening end of the static slot 14, of at least two line segments on the cutting edge 15 and the central axis 16 is L1, the horizontal straight line distance between the intersection point P of the two line segments and the central axis 16 is L2, wherein L1 is more than or equal to L2× (1.5-5), L1 is preferably 3 times of L2, the larger the difference value between L1 and L2 is, the narrower the width between the intersection point P of the two line segments and the central axis 16 of the static slot 14 is, and the purposes of delaying the entering of the hair into the slot of the static slot 14 and blocking the quick entering of the hair into the slot bottom of the static slot 14 can be achieved. Of course, if the difference between L1 and L2 is too large, e.g., greater than 5 times, although the purpose of delaying hair and preventing hair from entering the bottom of the static slot 14 is achieved, normal hair catching and trimming are also affected accordingly, and thus L1 is 3 times L2 as the best embodiment. In contrast, when the difference between L1 and L2 is too small, for example, less than 1.5 times, this means that the width between the intersection point P of the open end of the static tooth slot 14 and the two line segments and the central axis 16 of the static tooth slot 14 is relatively gentle, so that the time for the hair to enter the static tooth slot 14 cannot be delayed, and the purpose of preventing the hair from entering the bottom of the static tooth slot 14 cannot be better achieved.

In order to delay the time of the hair entering the groove of the static tooth groove 14 and prevent the hair from entering the groove bottom of the static tooth groove 14 rapidly, the included angle between at least two line segments on the cutting edge 15 is less than 1, and the angle range is as follows: 180 DEG > < 1 DEG > 90 DEG, preferably 160 DEG, in theory, the edge 15 of the tooth 12 can play a certain role in delaying and blocking the hair as long as the two line segments form an angle of < 1 >. The length of time to delay the hair from entering the bottom of the static tooth slot 14 depends on the change of the included angle 1. When the angle of the included angle 1 is larger, such as 175 degrees, the cutting edge 15 is close to a straight line or oblique line, the width change of the L1 and the L2 is gentle, the action of delaying and preventing the hair from entering the bottom of the static tooth groove 14 is relatively limited, and the expected purpose cannot be achieved. When the angle of the included angle is set to be too small, for example, 100 degrees, the width change of the L1 and the L2 is sharply narrowed, so that better delay and obstruction effects can be achieved, and normal hair trimming is affected; at the same time, the width of the toothing 12 is also reduced relatively. When the trimming blade is used, the trimming blade is provided with the side teeth 12 and the side teeth 13, the strength of which is correspondingly reduced, the purpose of preventing the trimming blade from deforming cannot be achieved, and the usability of the trimming blade is affected, so that the implementation of the embodiment is a preferred implementation.

In order to delay the time of hair entering the slot of the static slot 14 and prevent the hair from entering the slot bottom of the static slot 14 quickly, the cutting edge 15 of each side tooth 12 at least comprises a first line segment 17 and a second line segment 18, the intersection point P of the first line segment 17 and the second line segment 18 is positioned below the tooth tip of the cutting tooth 13, and after the movable blade 10 is assembled with the trimming blade (i.e. the static blade) to form an end face fit, the intersection point P also needs to be positioned below the cutting tooth 13 of the movable blade 10. When the trimming blade works, after the hair enters the static tooth groove 14, the effect of narrowing the width of the intersection point P of the first line segment 17 and the second line segment 18 is achieved, the time of the hair entering the groove bottom is delayed, the intersection point P also plays a role in blocking the hair correspondingly, so that the movable blade 10 can cut the hair before the hair enters the groove bottom of the static tooth groove 14, the hair is prevented from entering the groove bottom of the static tooth groove 14, and the effect of preventing the hair from being pulled or clamped is achieved. In the actual production process of the trimming blade, the second line segment 18 on the edge 15 of the edge tooth 12 and the line segment connecting the bottom of the static tooth groove 14 are naturally formed by the grinding wheel 19 when the static tooth groove 14 is rotationally cut, and the shape from the second line segment 18 to the opening end of the static tooth groove 14 is formed by secondary processing, wherein the secondary processing can be the cutting of the grinding wheel 19, the turning, milling and other machining equipment. Because the static tooth groove 14 is formed by rotationally cutting the grinding wheel 19, in order to facilitate the withdrawal of the grinding wheel 19 after rotationally cutting the static tooth groove 14, the thickness of the edge of the grinding wheel 19 is smaller than the thickness of the central area of the grinding wheel 19, therefore, a certain included angle 3 is formed between the second line segment 18 and the central axis 16 by taking the central axis 16 of the static tooth groove 14 as a reference, and the included angle 3 is based on the actual size of the grinding wheel 19. In order to make the blade edge 15 of the edge tooth 12 have a certain function of delaying and blocking hair, the central axis 16 of the static tooth groove 14 is used as a reference, the included angle 2 between the first line segment 17 and the central axis 16 is larger than the included angle 3 between the second line segment 18 and the central axis 16, so that the width of the blade edge 15 is narrowed between the opening end of the static tooth groove 14 and the intersection point P of the first line segment 17 and the second line segment 18.

In order to reduce the processing difficulty of the cutting edge 15 of the edge tooth 12 and reduce the production cost, the first line segment 17 and the second line segment 18 are respectively straight lines, the straight lines are inclined straight lines, and the connection positions of the two ends of the first line segment 17 and the second line segment 18 are respectively in smooth transition. Because the static tooth groove 14 is formed by rotary cutting of the grinding wheel 19, the shape of the second line segment 18 is the same as that of the outer side of the grinding wheel 19 and is an inclined straight line, so that independent processing of the second line segment 18 is avoided, and the processing difficulty of the cutting edge 15 of the edge tooth 12 is reduced; moreover, the inclined straight line can be utilized to facilitate the withdrawal of the grinding wheel 19 after the static tooth slot 14 is formed by rotary cutting. The first line segment 17 and the second line segment 18 are also inclined lines, which are easier to process than straight lines or inclined lines due to the convenience of processing. Thus, a straight or diagonal line is a preferred embodiment of the first and second line segments 17, 18. The joints of the two ends of the first line segment 17 and the second line segment 18 are respectively in smooth transition, so that the whole edge 15 of the edge tooth 12 can be seen more smoothly, and the whole aesthetic feeling of the trimming blade can be improved.

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

Claims

1. The trimming blade with the special-shaped teeth comprises a blade body (11), wherein the blade body (11) is provided with side teeth (12) at two end edges and a plurality of cutting teeth (13) arranged between the two side teeth (12) at intervals, and an open static tooth slot (14) is formed between two adjacent teeth; the cutting tooth is characterized in that one side of each edge tooth (12) close to the cutting tooth (13) is provided with a cutting edge (15), the cutting edge (15) comprises at least two line segments which are sequentially connected and extend from the opening end of the static tooth groove (14) to the groove bottom of the static tooth groove (14), an included angle 1 is formed between at least two line segments of the cutting edge (15) by taking the central axis (16) of the static tooth groove (14) as a reference, and the cutting edge (15) is narrowed from the opening end of the static tooth groove (14) to an intersection point P of the two line segments.

2. Trimming blade with profiled teeth according to claim 1, characterized in that at least two line segments on the cutting edge (15) are straight, curved or a combination thereof.

3. The trimming blade with special-shaped teeth according to claim 1, wherein the horizontal straight line distance between the upper vertex of one line segment, which is close to the opening end of the static tooth slot (14), of at least two line segments on the cutting edge (15) and the central axis (16) is L1, and the horizontal straight line distance between the intersection point P of the two line segments and the central axis (16) is L2, wherein L1 is equal to or greater than L2× (1.5-5), based on the central axis (16) of the static tooth slot (14).

4. Trimming blade with profiled teeth according to claim 1, characterized in that the angle 1 between at least two line segments on the edge (15) is in the range: 180 DEG > < 1 > 90 deg.

5. Trimming blade with profiled teeth according to any of the claims 1-4, characterized in that the cutting edge (15) of each tooth (12) comprises at least a first line segment (17) and a second line segment (18), the intersection point P of the first line segment (17) and the second line segment (18) being below the tooth tip of the cutting tooth (13), the angle ∈2 between the first line segment (17) and the central axis (16) being larger than the angle ∈3 between the second line segment (18) and the central axis (16) with respect to the central axis (16) of the static tooth slot (14), so that the cutting edge (15) narrows from wide between the open end of the static tooth slot (14) to the intersection point P of the first line segment (17) and the second line segment (18).

6. The trimming blade with special-shaped teeth according to claim 5, wherein the first line segment (17) and the second line segment (18) are respectively straight lines, and the connection parts of the two ends of the first line segment (17) and the second line segment (18) are respectively smooth transition.