CN117921752A - Moving blade with high strength narrow teeth - Google Patents

Abstract

The invention relates to a movable blade with high-strength narrow teeth, which is characterized in that at least one separation groove is arranged in each cutter tooth, the depth L1 of the separation groove is smaller than the depth L2 of a hair feeding groove, at least two divided teeth are formed in the cutter tooth, and the width L3 of each divided tooth is more than or equal to 0.1mm; at least one hollow groove is arranged at the end parts of the two ends of each cutter tooth, so that the end parts of the cutter tooth form at least two elastic supporting feet, and the hollow grooves and the separation grooves are arranged at intervals to form transverse ribs for connecting the separation teeth. The cutter tooth width is widened, at least one separation groove is formed in the cutter tooth, at least two partial teeth with the minimum width of 0.1mm are formed in the cutter tooth, and the aim of increasing the feeding angle by Mao Caokuan degrees and increasing the wool feeding amount is fulfilled. Secondly, forming transverse ribs connected with the tooth segments by utilizing the interval between the hollow grooves and the separation grooves, so as to strengthen the working strength of the tooth segments in the cutter teeth; and at least two elastic supporting feet are formed on two sides of the end part of the cutter tooth, so that the cutter tooth can shake back and forth when cutting off hairs, the generated sound is cleaner and more crisp, and the user has better sense feeling.

Description

Moving blade with high strength narrow teeth

Technical Field

The invention relates to a hair cutting blade, in particular to a movable blade with high-strength narrow teeth, which is mainly applied to the field of hair pruning tools such as shaving and the like.

Background

The inventor applies for the name in 2020, 04 and 09: integral type moves blade, bulletin number: CN211967597U, as shown in fig. 1, specifically discloses a body (1), a plurality of separation grooves (2) arranged on the body (1) enable a plurality of mutually independent cutter teeth (3) to be formed in the body (1), and hollow grooves (4) are respectively arranged at two ends of each cutter tooth (3), and support legs (L1) are formed at two sides of the end part of each cutter tooth (3) by using the arranged hollow grooves (4); when each cutter tooth (3) cuts off hair, each cutter tooth (3) can vibrate back and forth and generate crisp sound.

Although the hollow grooves (4) are additionally arranged at the two ends of each cutter tooth (3), each cutter tooth (3) can vibrate back and forth to make crisp sound after cutting hair. However, in order to ensure the working strength of each cutter tooth (3), the width of the cutter tooth (3) is required to be at least more than 0.3mm. Increasing the width of the cutter teeth (3) can naturally improve the working strength of the cutter teeth (3), and relatively also can lead the width of a separation groove (or called a hair feeding groove) between adjacent cutter teeth (3) to be relatively smaller, so that the hair feeding space is reduced, and the hair feeding amount and the hair trimming benefit are reduced.

Disclosure of Invention

In order to solve the above technical problems; the invention provides a movable blade with high-strength narrow teeth, which not only can reduce the width of cutter teeth, realize the narrowing of the cutter teeth and improve the hair feeding space and hair cutting benefit of a hair feeding groove between adjacent cutter teeth, but also can effectively improve the working strength of each cutter tooth, so that each cutter tooth can make crisp sound after cutting hair, and the using sense of a hair trimming tool is improved.

In order to solve the technical problems, the invention adopts the technical scheme that the movable blade with high-strength narrow teeth comprises a body, wherein a plurality of cutter teeth are arranged on the body at intervals, and a hair inlet groove is formed between every two adjacent cutter teeth; at least one separation groove is arranged in each cutter tooth, the depth L1 of the separation groove is smaller than the depth L2 of the hair feeding groove, at least two divided teeth are formed in each cutter tooth, and the width L3 of each divided tooth is more than or equal to 0.1mm; at least one hollow groove is arranged at the end parts of the two ends of each cutter tooth, so that the end parts of the cutter tooth form at least two elastic supporting feet, and the hollow grooves and the separation grooves are arranged at intervals to form transverse ribs for connecting the separation teeth.

Preferably, the spacing distance between the bottom of the separation groove and the top of the hollowed-out groove is not less than 0.05mm, so that the minimum width L4 of the transverse rib is not less than 0.05mm.

Preferably, the body is in an inverted U shape and comprises a cutting part in an arc shape and supporting parts fixed at two ends of the cutting part at intervals, and at least partial outer surfaces of the cutting part and the inner surfaces of the static cutters are always attached to form a fan-shaped cutting surface.

Preferably, the depth L1 of the separation groove is greater than the arc height L5 of the sector-shaped cutting surface as seen in the forward projection of any one of the support portions, so that the transverse rib connecting the teeth is located outside the sector-shaped cutting surface.

Preferably, the joint of the transverse ribs and the teeth of each cutter tooth is in smooth transition.

Preferably, the horizontal extension lines of the upper end and the lower end of the hollow groove are respectively positioned above and below the groove bottom of the hair feeding groove.

Preferably, the upper end and the lower end of the hollow groove are respectively arc-shaped, and the radian of the upper end is smaller than that of the lower end to form a water drop shape, so that the elastic supporting legs formed on the two sides of the cutter tooth are gradually narrowed from top to bottom.

The beneficial effects of the invention are as follows:

1. Widening the width of the cutter teeth, and arranging at least one separation groove in the cutter teeth to form at least two partial teeth with the minimum width of 0.1mm in the cutter teeth, thereby realizing the purposes of increasing the feeding angle by Mao Caokuan degrees and improving the hair feeding amount.

2. The transverse ribs connected with the teeth are formed by utilizing the interval between the hollow grooves and the separation grooves, so that the working strength of the teeth in the cutter teeth is enhanced, and the influence on the hair trimming benefit of the movable blade caused by excessive bending deformation when the hair is cut due to the too small width of the teeth is avoided.

3. At least one hollowed-out groove is additionally arranged at the end part of the cutter tooth, so that at least two elastic supporting feet can be respectively formed at two sides of the end part of the cutter tooth. When the hair is cut, the hair stretches into the hair groove to form certain resistance on the split teeth, the split teeth and the elastic supporting legs positioned on the opposite side of the swinging direction form certain micro bending deformation, and the elastic supporting legs positioned on the side of the swinging direction are outwards spread. When the resistance of the cut hair disappears, the teeth can vibrate back and forth under the double acting forces of the reaction force and the reset of the elastic supporting legs, so that the sound of the cutter teeth when cutting the hair is clearer and more crisp, and the user has better sense feeling.

Drawings

FIG. 1 is a plan view of a conventional movable blade

FIG. 2 is a plan view of a moving blade with high strength narrow teeth according to an embodiment of the present invention

FIG. 3 is an enlarged view of the portion P in FIG. 2

FIG. 4 is an enlarged sectional view of the structure at A-A in FIG. 2

FIG. 5 is a perspective view of a moving blade with high strength narrow teeth according to an embodiment of the present invention

FIG. 6 is a second embodiment of a moving blade with high strength narrow teeth according to an embodiment of the present invention

FIG. 7 is a third embodiment of a moving blade with high strength narrow teeth according to an embodiment of the present invention

FIG. 8 is a fourth embodiment of a moving blade with high strength narrow teeth according to an embodiment of the present invention

FIG. 9 is a fifth embodiment of a moving blade with high strength narrow teeth according to an embodiment of the present invention

FIG. 10 is a sixth embodiment of a moving blade with high strength narrow teeth according to an embodiment of the present invention

Detailed Description

Embodiments of the present invention are further described below with reference to fig. 2-10:

The invention relates to a movable blade with high-strength narrow teeth, which comprises a body 1, wherein the body 1 is connected with a movable blade holder, and when in use, a driving part drives the movable blade holder (not shown in the figure) to enable the movable blade arranged on the movable blade holder to swing relatively along a static blade 9. In order to cut off hair, a plurality of cutter teeth 2 are arranged on the body 1 at intervals along the length direction of the body 1, and a hair inlet groove 3 is formed between adjacent cutter teeth 2. In order to ensure the working strength of the cutter teeth 2 in the movable blade, the width of the cutter teeth 2 in the conventional movable blade is relatively large and is basically more than 0.3mm, and the width of the hair feeding groove 3 is correspondingly reduced under the condition that the length of the movable blade is unchanged. When the width of the hair-feeding groove 3 is narrowed, the amount of hair fed is also relatively reduced, resulting in a reduced hair-cutting benefit. Therefore, on the premise of not increasing the production cost and ensuring the working strength of the cutter teeth 2, how to increase the width of the hair feeding groove 3 to increase the hair feeding amount and improve the hair trimming benefit is a technical problem facing the person skilled in the art.

In view of the above-mentioned technical problems, the technical team of the present inventors proposes the following solutions: by adopting reverse thinking, contrary to the thought of reducing the tooth width, by increasing the width of the cutter tooth 2 and then arranging at least one separation groove 4 in the cutter tooth 2, and enabling the separation groove depth L1 to be smaller than the hair feeding groove depth L2, at least two separation teeth 5 are formed in the cutter tooth 2, so that the width of the separation groove 4 can be controlled according to actual needs, the minimum width L3 of the separation teeth can be controlled to be more than or equal to 0.1mm, and the purposes of increasing the width of the hair feeding groove 3 and improving the hair feeding amount are achieved.

In order to ensure the working strength of each tooth 5, at least one hollow groove 6 is further formed at the end parts of the two ends of each cutter tooth 2, so that at least two elastic supporting feet 7 are formed at the end parts of the cutter teeth 2, and transverse ribs 8 for connecting the tooth 5 are formed by the hollow grooves 6 and the separation grooves 4 at intervals. Through the hollow-out groove 6 arranged at the end part of the cutter tooth 2, the following purposes can be achieved:

Firstly, utilize the interval between hollow groove 6 and the separating groove 4 to form the horizontal muscle 8 of connection minute tooth 5 for strengthen the working strength of minute tooth 5 in the sword tooth 2, avoid because of minute tooth width L3 is too little and lead to taking place excessive bending deformation and influence the hair pruning benefit of moving the blade when cutting the hair.

Secondly, at least one hollowed-out groove 6 is additionally arranged at the end part of the cutter tooth 2, so that at least two elastic supporting feet 7 can be respectively formed at two sides of the end part of the cutter tooth 2. When cutting hair, the hair will extend into the hair groove 3 and will form a certain resistance against the teeth 5. At this time, as shown in fig. 3, the minute tooth 5 and the elastic supporting leg 7 at the opposite side of the swing direction form a certain slight bending deformation, and the elastic supporting leg 7 at the opposite side of the swing direction is spread outward. When the threshold value is reached, the tooth 5 and the static knife 9 are matched to cut off the hair, the resistance of the hair disappears, the tooth 5 can vibrate back and forth under the double acting forces of the reaction force and the reset of the elastic supporting leg 7, so that the sound of the cutter tooth 2 when cutting the hair is cleaner and more crisp, and the sense of the user is better. If the hollow groove 6 is not formed, after the contact of the tooth 5 with the hair is blocked, the end rigidity of the cutter tooth 2 is strong, and a larger deformation space cannot be provided for the tooth 5, so that the swing amplitude of the tooth 5, which swings back and forth after the hair is cut off, becomes smaller, and a lower sound is emitted.

In actual production, the hollowed-out groove 6 can be only arranged at the end part of one end of the cutter tooth 2, but the hollowed-out groove 6 is only arranged at one end of the cutter tooth 2, so that the back and forth vibration amplitude and frequency after the hair is cut off by the tooth 5 can be weakened. It is therefore a preferred embodiment to provide hollowed-out grooves 6 at the ends of the cutter teeth 2, respectively.

In the above general idea for solving the problems, the present inventors have also proposed other embodiments, as shown in fig. 6 and 10, in which one or more dividing grooves 4 may be provided in the cutter teeth 2, so that a plurality of dividing teeth 5 having a width equal to or greater than 0.1mm are formed in the cutter teeth 2, thereby increasing the width of the hair feeding groove 3 to improve the hair feeding amount and hair trimming efficiency. Meanwhile, in order to ensure the working strength of each tooth 5 and improve the use sense of a user, one or more hollow grooves 6 which are in the same or different shapes and are arranged at intervals with the separation grooves 4 can be arranged at the end part of each tooth 2, so that transverse ribs 8 are formed between each adjacent tooth 5 in the tooth 2, and at least two elastic supporting feet 7 are formed at the end part of the tooth 2, the working strength of each tooth 5 can be improved by utilizing the transverse ribs 8, and the hair trimming performance is ensured. Meanwhile, the elastic supporting legs 7 can be utilized to generate bending deformation after the teeth 5 are blocked to accumulate energy, so that the teeth 5 can vibrate back and forth after cutting off hairs, more crisp sound is generated, and the using sense organs of users are improved. The above embodiments are provided only for preferred combinations and should not be construed as limiting the application, and those skilled in the art can freely change, substitute or combine according to actual demands.

In order to improve the working strength of the tooth 5 and prevent bending deformation from affecting the hair trimming performance when cutting hair, the interval distance between the bottom of the separation groove 4 and the top of the hollow groove 6 is not less than 0.05mm, so that the width L4 of the transverse rib is not less than 0.05mm. The larger the width L4 of the transverse rib, the higher the working strength of the tooth 5, but the thickness of the body 1 of the existing movable blade is basically between 0.2mm and 0.6mm for the practical requirements of the production cost and the hair trimming performance, so that the transverse rib width L4 is determined by referring to the thickness of the body 1 in the practical production. If the thickness of the body 1 is thicker (more than 0.6 mm), the width L4 of the transverse rib is smaller; conversely, the smaller the thickness of the body 1 (less than 0.2 mm), the corresponding increase in the width L4 of the transverse rib.

In order to ensure the working strength of the tooth 5, the transverse rib 8 is generally arranged at the center position of the tooth at an angle of Mao Caoshen degrees L2. Under the condition that the width L4 of the transverse rib is unchanged, the setting position of the transverse rib 8 is smaller than half of the depth L2 of the hair feeding groove, which means that the length of the tooth 5 is increased, but the minimum width L3 of the tooth is 0.1mm, for example, the length is too long, and the working strength of the tooth 5 is low, so that the hair trimming performance is affected by the distortion and deformation. If the setting position of the transverse rib 8 exceeds half of the depth L2 of the hair-feeding groove, the length of the tooth 5 is shortened, the bending strength of the tooth 5 is correspondingly improved, the bending deformation space of the tooth 5 is reduced after the tooth 5 is blocked, and the elastic supporting leg 7 cannot store larger energy, so that the amplitude of the tooth 5 vibrating back and forth after cutting hair is reduced, and the effect of crisp sound cannot be generated.

In order to improve hair trimming benefits, the body 1 is in an inverted U shape, and comprises an arc-shaped cutting part 11 and supporting parts 12 fixed at two ends of the cutting part 11 at intervals, wherein at least partial outer surfaces of the cutting part 11 and inner surfaces of the static cutters 9 are always kept in fit to form a fan-shaped cutting surface 10. Seen in forward projection from any support 12, the separation groove depth L1 is greater than the arc height L5 of the sector-shaped cutting surface 10, so that the transverse rib 8 connecting the minute teeth 5 is located outside the sector-shaped cutting surface 10. The depth of the separation groove 4 is set to be larger than that of the sector-shaped cutting surface 10, and the transverse ribs 8 are arranged outside the sector-shaped cutting surface 10, so that when entering the area of the sector-shaped cutting surface 10, the separation groove is not blocked by the transverse ribs 8, smooth hair introduction and hair trimming in the whole area of the sector-shaped cutting surface 10 are ensured, and the hair trimming benefit of the hair trimming tool is improved.

In some embodiments, the connection between the transverse rib 8 and the dividing teeth 5 in each cutter tooth 2 is smooth. The smooth transition is utilized to disperse and conduct the transverse bearing resistance of the minute teeth 5 to the greatest extent, improve the working strength of the minute teeth 5, improve the toughness of the minute teeth 5 and enlarge the amplitude of the minute teeth 5 to-and-fro vibration, so that the sound of the minute teeth 5 after cutting off hairs is cleaner and more fragile, and the user using sense is better. Meanwhile, the phenomena of napping, clamping or pulling hair at the joint of the transverse ribs 8 and the teeth 5 can be avoided, and the use comfort in the hair trimming process is improved.

In order to increase the back and forth vibration amplitude of the split teeth 5 after cutting off the hair, the horizontal extension lines of the upper end and the lower end of the hollowed-out groove 6 are respectively positioned above and below the groove bottom of the hair feeding groove 3. Through the distance of control fretwork groove 6 bottom and advance hair groove 3 bottom, make the bottom of fretwork groove 6 be in the below that advances hair groove 3 bottom, corresponding increase the length of cutter tooth 2 tip elastic support foot 7. When the teeth 5 bear the resistance of hair, the elastic supporting feet 7 can realize larger bending deformation and accumulate larger reset resilience force, so that the back and forth vibration amplitude of the teeth 5 is larger, the frequency is faster, and the generated sound is more crisp. The groove top of the hollow groove 6 is arranged above the hair feeding groove 3, so that the length of the elastic supporting leg 7 can be controlled by utilizing the distance between the groove top of the hollow groove 6 and the groove bottom of the hair feeding groove 3, the longer the length of the elastic supporting leg 7 is, the stronger the resilience force can be accumulated, the larger the back and forth vibration amplitude of the tooth 5 is, and the faster the frequency is. Conversely, when the distance between the bottom of the hollow groove 6 and the bottom of the wool inlet groove 3 is reduced, the length of the elastic supporting leg 7 is correspondingly shortened, the accumulated force is correspondingly weakened, the back and forth vibration amplitude of the tooth 5 is correspondingly reduced, the vibration frequency is reduced, and the generated sound is relatively low.

In order to improve the transverse bending strength (transverse refers to the reciprocating swing direction of the cutter tooth 2 and the minute tooth 5) of the elastic supporting leg 7, the upper end and the lower end of the hollowed-out groove 6 are respectively arc-shaped, and the radian of the upper end is smaller than that of the lower end to form a water drop shape, so that the elastic supporting leg 7 formed on two sides of the cutter tooth 2 is gradually narrowed from top to bottom. The hollow groove 6 at the end part of the cutter tooth 2 is provided with a drop shape with a small upper part and a big lower part, so that the whole appearance of the movable blade can be improved. The width of the elastic supporting leg 7 is narrowed from top to bottom by utilizing the shape change of small upper part and large lower part, the bending strength of the elastic supporting leg 7 is increased, meanwhile, the elastic supporting leg 7 can be ensured to generate bending deformation accumulated energy when the teeth 5 are blocked, and enough kinetic energy support is provided for the teeth 5 to shake back and forth after cutting hair, so that the teeth 5 can generate crisp sound when cutting hair, and the using sense of a user is improved. As can be seen from fig. 7, the hollow groove 6 may also be circular, which also makes it possible to gradually narrow the elastic support leg 7 from top to bottom. Of course, the hollow groove 6 may be a long strip as shown in fig. 6, so that the width of the elastic supporting leg 7 is kept uniform up and down, and the transverse bending strength of the cutter tooth 2 is relatively weak. Thus, a drop or round shape is the preferred embodiment.

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

Claims (7)

1. The movable blade with the high-strength narrow teeth comprises a body (1), wherein a plurality of cutter teeth (2) are arranged on the body (1) at intervals, and a hair inlet groove (3) is formed between every two adjacent cutter teeth (2); the cutter tooth (2) is provided with at least one separation groove (4), the depth L1 of the separation groove is smaller than the depth L2 of the hair feeding groove, at least two sub-teeth (5) are formed in the cutter tooth (2), and the width L3 of the sub-teeth is more than or equal to 0.1mm; at least one hollowed-out groove (6) is arranged at the end parts of the two ends of each cutter tooth (2) to enable the end parts of the cutter teeth (2) to form at least two elastic supporting feet (7), and the hollowed-out groove (6) and the separation groove (4) are arranged at intervals to form transverse ribs (8) connected with the separation teeth (5).

2. The movable blade with high-strength narrow teeth according to claim 1, wherein the spacing distance between the bottom of the separation groove (4) and the top of the hollowed groove (6) is not less than 0.05mm, so that the minimum width L4 of the transverse rib (8) is not less than 0.05mm.

3. The movable blade with high-strength narrow teeth according to claim 1, characterized in that the body (1) is in an inverted U shape and comprises an arc-shaped cutting part (11) and supporting parts (12) fixed at two ends of the cutting part (11) at intervals, wherein at least partial outer surfaces of the cutting part (11) are always attached to the inner surface of the static blade (9) to form a sector-shaped cutting surface (10).

4. A moving blade with high strength narrow teeth according to claim 3, characterized in that the separation groove depth L1 is larger than the arc height L5 of the sector-shaped cutting surface (10) seen in forward projection of any support part (12), so that the transverse rib (8) connecting the teeth (5) is located outside the sector-shaped cutting surface (10).

5. The movable blade with high-strength narrow teeth according to claim 1, characterized in that the connection of the transverse ribs (8) and the dividing teeth (5) in each cutter tooth (2) is in smooth transition.

6. The movable blade with high-strength narrow teeth according to claim 1, characterized in that the horizontal extension lines of the upper and lower ends of the hollow groove (6) are respectively positioned above and below the groove bottom of the hair-feeding groove (3).

7. The movable blade with high-strength narrow teeth according to claim 1, wherein the upper end and the lower end of the hollow groove (6) are respectively arc-shaped, the radian of the upper end is smaller than that of the lower end to form a water drop shape, and the elastic supporting feet (7) formed on the two sides of the cutter tooth (2) are gradually narrowed from top to bottom.