CN215701875U - Quiet sword and tool bit subassembly - Google Patents

Abstract

The utility model relates to a static knife and knife head assembly, which is characterized in that grooves are arranged on cutting surfaces of a plurality of cutting teeth, and the edge distance D1 between two side edges of each groove and two side edges corresponding to the cutting teeth is 0.1-0.2 mm. The cutting surface of the body is provided with the groove, so that the contact area between the movable knife and the body is correspondingly reduced, the friction resistance is effectively reduced, the temperature rise of the body is reduced, and the comfort level of a user in use is improved. And secondly, the groove can be used for placing lubricating materials, so that the friction noise between the body and the movable knife is reduced, the abrasion of the power surface is reduced, the running current of the knife head is reduced, and the service life of the battery is prolonged. And the edge distance between the groove and the edge of the cutting tooth is controlled, so that crisp sound can be generated between the movable knife and the body when hair is cut, and the whole comfortable feeling of the hair trimmer is improved.

Description

Quiet sword and tool bit subassembly

Technical Field

The present invention relates to a stationary knife for trimming hair, and more particularly to a knife for use in a hair trimming device.

Background

The existing reciprocating shaver mainly comprises two types of shaver heads, one of which is a mesh shaver head for shaving short hairs and a trimming shaver head for shaving long hairs (which is usually arranged between two groups of mesh shaver heads and is also called as an intermediate shaver), and one or more groups of mesh shaver heads and intermediate shaver heads can be arranged at the same time.

The existing middle knife mainly comprises a static knife, a static knife bracket for fixing the static knife, a movable knife for trimming hair matched with the bottom surface of the static knife, and a movable knife base which is used for fixing power and is in linkage connection with a driving mechanism.

When the intermediate knife is used for shaving hair, the movable knife and the fixed knife are required to be attached to each other to finish the hair trimming, so that the contact area between the fixed knife and the movable knife is correspondingly too large, the temperature rise of the fixed knife and the movable knife is correspondingly improved in the process of frequent reciprocating motion of the movable knife, and the use comfort of the intermediate knife is reduced.

SUMMERY OF THE UTILITY MODEL

To solve the above technical problems; the utility model provides a static knife and a knife head assembly, wherein the static knife can effectively reduce the contact area between moving knives, reduce the integral temperature rise of the static knife and improve the use comfort of the static knife. Meanwhile, the fit degree of the static knife and the skin can be improved, and the hair trimming benefit is improved.

In order to solve the technical problems, the technical scheme adopted by the utility model is that the static knife comprises a body, wherein a plurality of hair guide holes are formed in the body, so that a plurality of cutting teeth are formed on the body; grooves are respectively arranged on the cutting surfaces of the cutting teeth, and the edge distance D1 between the two side edges of the grooves and the two side edges corresponding to the cutting teeth is 0.1-0.2 mm.

Preferably, the length of the groove is larger than the attaching width between the cutting surface of the cutting tooth and the movable blade.

Preferably, the depth D2 of the groove is less than or equal to 0.1 mm.

Preferably, the cross section of the groove is square, arc or polygonal.

Preferably, the body comprises a trimming plate, a left side plate and a right side plate which are connected with two sides of the trimming plate, and the hair guide holes are formed in the trimming plate to enable a plurality of cutting teeth to be formed on the trimming plate; the height of the left side plate is larger than that of the right side plate, so that the shearing plate is inclined.

Preferably, the inclination angle S of the trimming plate is less than or equal to 50 degrees.

A cutter head assembly comprising a stationary cutter as claimed in any one of the preceding claims.

Preferably, the top parts of the left side plate and the right side plate are respectively provided with connecting plates which incline outwards, and the two sides of the trimming plate are respectively connected with the connecting plates into a whole, so that the width between the left side plate and the right side plate is smaller than that of the trimming plate; the hair guide hole is connected with the left side plate and the right side plate.

The cutting surface of the body is provided with the groove, so that the contact area between the movable knife and the body is correspondingly reduced, the friction resistance is effectively reduced, the temperature rise of the body is reduced, and the comfort level of a user in use is improved. And secondly, the groove can be used for placing lubricating materials, so that the friction noise between the body and the movable knife is reduced, the abrasion of the power surface is reduced, the running current of the knife head is reduced, and the service life of the battery is prolonged. And the edge distance between the groove and the edge of the cutting tooth is controlled, so that crisp sound can be generated between the movable knife and the body when hair is cut, and the whole comfortable feeling of the hair trimmer is improved.

Drawings

FIG. 1 is a sectional view of a tool bit assembly incorporating an embodiment of the present invention

FIG. 2 is an enlarged view of the point P in FIG. 1

FIG. 3 is a perspective view of a stationary knife according to an embodiment of the present invention

FIG. 4 is an assembly structure view of a stationary knife in the embodiment of the present invention

Detailed Description

The embodiments of the utility model will be further explained with reference to the drawings in which:

as shown in fig. 1-4, the present invention is a stationary knife, comprising a body 1, a plurality of hair introducing holes 2 are provided on the body 1 to form a plurality of cutting teeth 3 on the body 1; in the use, the cutting teeth of the movable knife 5 are attached to the cutting teeth 3 on the body 1 and do reciprocating motion to trim hair, grooves 4 are respectively arranged on the cutting surfaces of the cutting teeth 3 to reduce the contact area between the movable knife 5 and the body 1 and the overall temperature rise of the knife head, and the edge distances D1 between the two side edges of the grooves 4 and the two side edges corresponding to the cutting teeth 3 are 0.1-0.2 mm. Through set up recess 4 on the cutting plane at body 1, when moving sword 5 and body 1 laminating, then corresponding reduction move the area of contact between sword 5 and the body 1, and when moving sword 5 reciprocating motion under actuating mechanism's drive, effectively reduce frictional resistance, reduce the temperature rise of body 1, promote the comfort level of user when using. Secondly, in the actual use process, the groove 4 can be used for placing lubricating materials, so that the friction noise between the body 1 and the movable blade 5 is reduced, the abrasion of the power surface is reduced, the running current of the blade head is reduced, and the service life of the battery is prolonged. And the margin D1 between the edge of the groove 4 and the edge of the cutting tooth 3 is set between 0.1-0.2 mm, preferably 0.1mm, so that the movable blade 5 and the body 1 can make crisp sound when cutting hair, and the whole comfort of the hair trimmer is improved. Meanwhile, the volume of the groove 4 can be increased to the maximum extent, and more lubricating materials can be placed.

In order to reduce the contact area between the movable knife 5 and the body 1 to the maximum extent and reduce the abrasion of the movable knife 5 and the temperature rise of the body 1, the length of the groove 4 is greater than the joint width between the cutting surface of the cutting tooth 3 and the movable knife 5. The length of the groove 4 is larger than the fit width between the groove and the movable blade 5, so that the contact area between the movable blade 5 and the body 1 can be effectively reduced, the hair trimming benefit between the movable blade 5 and the body 1 is ensured, and the purposes of reducing friction force and increasing the temperature of the body 1 can be realized.

In order to ensure that the contact area between the movable blade 5 and the body 1 is reduced and the working strength of the cutting teeth 3 of the body 1 is ensured, the depth D2 of the groove 4 is less than or equal to 0.1mm, and preferably is 0.05 mm. In order to ensure the hair cutting benefit, the thickness of the existing body 1 is thinner, and if the depth of the groove 4 is set to be larger, although the purpose of reducing the contact area between the movable blade 5 and the body 1 can be realized, the working strength of the cutting teeth 3 of the body 1 can be correspondingly reduced, so that the cutting teeth 3 are easy to break. If the depth of the groove 4 is set to be smaller, the total amount of the lubricating material placed in the groove 4 is affected, and the technical purposes of reducing the abrasion of the movable knife 5, reducing the running current of the knife head and prolonging the service life of the battery are correspondingly shortened.

In order to ensure the working strength of the cutting teeth 3 of the body 1, the cross section of the groove 4 is square, arc or polygonal. The groove 4 is produced and processed in the actual production process in the modes of etching, electric pulse, stamping and the like, and when the width of the cutting tooth 3 is less than or equal to 0.4mm, the groove 4 is processed by adopting the etching process as the optimal production scheme. The specific cross-section of the groove 4 may be determined according to the user's needs, and the embodiment is not further limited.

Most of the existing pruning tools adopt different cutter heads which are integrated together so as to realize the pruning of hairs with different lengths, in order to ensure the pruning benefit of the body 1, the body 1 comprises a pruning plate 11, a left side plate 12 and a right side plate 13 which are connected with the two sides of the pruning plate 11, and a hair guide hole 2 is arranged on the pruning plate 11 so that a plurality of cutting teeth 3 are formed on the pruning plate 11; the height of the left side plate 12 is larger than that of the right side plate 13, so that the shear plate 11 is inclined. Set up to the slope form through the upper surface with body 1, when the clipper is integrated a plurality of tool bits simultaneously, just can make each tool bit be the slope form and arrange to promote the laminating degree between each tool bit on the clipper and the skin, avoid the mutual interference between each tool bit, promote the benefit and the hair pruning effect of hair sword pruning.

In order to ensure the best fit degree of the body 1 with the skin when the body is integrated in the multi-cutter head trimming tool and improve the hair trimming benefit, the inclination angle S of the trimming plate 11 is less than or equal to 50 degrees, and preferably is 9 degrees. When body 1 is integrated in the clipper of many tool bits, the cutter head of repairing under the most circumstances can be installed in the intermediate position, when the upper surface of body 1 was the level form like this, receives the separation of both sides mould tool bit, can seriously influence the laminating degree between body 1 and the skin to influence clipper's hair pruning benefit and effect. The inclination angle S of the trimming plate 11 is set to be less than or equal to 50 °, preferably 9 °, so that when a plurality of tool bits are integrated on the trimming tool, the optimum fitting degree between the body 1 and the skin can be ensured by adjusting the inclination angle S of the trimming plate 11 regardless of the position at which the static tools are arranged. The inclination angle S in this embodiment is 9 °, and is set based on the fact that the trimmer integrates three cutting heads and the stationary blade is located at the middle position. Different mounting positions can select different inclination angles.

Because most of the existing pruning tools are integrated with a plurality of different tool bits, the installation clearance between the tool bits is very limited due to the influence of the installation space of the pruning tools, which is not beneficial to the production and assembly of the static knife, and in order to ensure the assembly of the static knife, the tops of the left side plate 12 and the right side plate 13 are respectively provided with an outward-inclined connecting plate 14, and the two sides of the pruning plate 11 are respectively connected with the connecting plates 14 into a whole, so that the width between the left side plate 12 and the right side plate 13 is smaller than the width of the pruning plate 11; the hair guide hole 2 is connected with the left side plate 12 and the right side plate 13. Under the condition that the width of the trimming plate 11 is not changed, the connecting plate 14 is arranged to shrink the distance between the left side plate 12 and the right side plate 13, so that the hair cutter leading-in hole benefits of the hair leading-in holes 2 in the trimming plate 11 and the connecting plate 14 can be guaranteed, meanwhile, the whole volume of the static cutter can be reduced to the greatest extent, the static cutter is convenient to assemble, and the assembling benefits are improved.

A cutter head assembly comprising a stationary cutter as claimed in any one of the preceding claims.

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

Claims (8)

1. A static knife comprises a body, wherein a plurality of hair leading-in holes are arranged on the body to form a plurality of cutting teeth on the body; the cutting tooth is characterized in that grooves are formed in cutting surfaces of a plurality of cutting teeth, and the edge distance D1 between two side edges of each groove and the corresponding two side edges of each cutting tooth is 0.1-0.2 mm.

2. The stationary knife according to claim 1, wherein the length of the groove is greater than the width of the fit between the cutting surface of the cutting tooth and the movable knife.

3. A stationary knife according to claim 1, characterized in that the depth D2 of the groove is 0.1mm or less.

4. A stationary knife according to claim 1, characterized in that the cross-section of the recess is square, arc-shaped or polygonal.

5. The stationary knife according to claim 1, wherein the body comprises a shear plate, and a left side plate and a right side plate connected to both sides of the shear plate, and the hair introduction holes are formed in the shear plate to form a plurality of cutting teeth; the height of the left side plate is larger than that of the right side plate, so that the shearing plate is inclined.

6. A stationary knife according to claim 5, characterized in that the angle of inclination S of the shear plate is less than or equal to 50 °.

7. The static knife according to claim 5, wherein the top parts of the left side plate and the right side plate are respectively provided with an outward inclined connecting plate, and the two sides of the trimming plate are respectively connected with the connecting plates into a whole, so that the width between the left side plate and the right side plate is smaller than that of the trimming plate; and the hair guide holes are connected with the connecting plates on the left side plate and the right side plate.

8. A cutter head assembly comprising a stationary cutter according to any one of claims 1 to 7.

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