Movable blade helical tooth scissors

Abstract

The pair of movable blade helical tooth scissors comprises a movable blade and a static blade, the movable blade is hinged to the static blade through a pivot, a first finger ring is arranged at the end of the movable blade, a second finger ring is arranged at the tail end of the static blade, a plurality of helical tooth parts arranged at intervals are arranged on the edge, close to the static blade, of the movable blade, and a plurality of arc-shaped tooth grooves arranged at intervals are formed in the static blade. Tooth blades are formed between the tooth grooves, and the tooth blades and the oblique tooth parts are matched with each other to shear hair. The oblique tooth part provides a sharp edge for the scissors, the movable blade rotates towards the static blade through the hinged position, and the oblique tooth part is matched with the tooth blade between the arc-shaped tooth grooves, so that hair is quickly cut and thinned. In addition, the helical tooth parts are gradually contacted with the tooth blades in the rotating process, so that the hair is gradually cut off in a layered manner in the shearing process, and the damage to the hair cuticles is reduced. Meanwhile, the arc-shaped tooth grooves can contain more hair, the hair can be kept stable, the hair is prevented from sliding or shifting during shearing, and therefore the shearing accuracy is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to scissors technical field, concretely relates to a movable blade bevel tooth scissors. BACKGROUND

[0002] Scissors refer to one side of the blade is jagged scissors, the number of teeth and the shape of the teeth are different, without changing the overall length of the hair, make heavy hair more soft, reasonable use of scissors can also produce some special effects on the hair.

[0003] The utility model discloses a hair scissors thinning tooth tip bevel tooth structure, including first scissors body and second scissors body, a plurality of parallel and interval arrangement's open groove are established to the first scissor blade, and the top between adjacent two open grooves is equipped with bevel tooth blade, and the bevel tooth blade includes arc blade part and a plurality of straight tooth blade parts that are arranged continuously in ladder shape and are connected with the arc blade part.

[0004] However, the above-mentioned hair scissors have the following defects:

[0005] First, the bevel tooth blade is arranged at the top between the open grooves, and the structural strength of the end of the open groove is low. After a period of use, the bevel tooth blade is seriously blunted, and the hair cannot be cut off in time, which may cause the hair to be pushed out.

[0006] Second, according to the description and the attached Figure 1 and the attached Figure 2 , it can be seen that the open groove is long and straight, and the hair that does not need to be thinned is arranged in the open groove. During the cutting process, the hair is easy to slip or deviate, causing the inconsistency of the thinned hair volume.

[0007] Third, the width of the bevel tooth blade is small, that is, the contact area of the hair with the single bevel tooth blade is small, and the bevel tooth blade has strong pulling or cracking on the hair, which is easy to cause damage to the hair.

[0008] Therefore, it is necessary to improve the above-mentioned defects. UTILITY MODEL CONTENTS

[0009] The utility model discloses a movable blade bevel tooth scissors that can place the hair stably during thinning, has strong cutting ability and long service life, to solve the above-mentioned problems existing in the prior art.

[0010] To achieve the above-mentioned purpose, the utility model adopts the technical scheme: a movable blade bevel tooth scissors, including movable blade and static blade, the movable blade and the static blade are hinged through the pivot, the movable blade end is equipped with the first finger ring, and the static blade tail end is equipped with the second finger ring, characterized by: the movable blade edge close to the static blade is equipped with a plurality of interval arrangement's bevel tooth part, the static blade is equipped with a plurality of interval arrangement's arc tooth groove, and the tooth groove forms the tooth blade, and the tooth blade and the bevel tooth part are matched to realize the cutting of the hair.

[0011] By adopting the technical scheme, the bevel tooth part provides a sharp edge for the scissors, the moving blade rotates towards the static blade through the hinge, the bevel tooth part cooperates with the tooth edge between the arc-shaped tooth groove, and hair is quickly cut and thinned. In addition, the bevel tooth part gradually contacts the tooth edge in the rotating process, so that the hair is gradually layered and cut off in the cutting process, instead of being broken by the whole blade at one time, thereby reducing damage to hair scales. At the same time, the arc-shaped tooth groove can accommodate more hair, can keep the hair stable, and prevent the hair from sliding or shifting during cutting, thereby improving the accuracy of cutting.

[0012] The moving blade bevel tooth scissors can be further provided with a plurality of bevel tooth strips arranged in steps, and the bevel tooth parts are provided with a round corner.

[0013] By adopting the technical scheme, the stepped bevel tooth strips cut the hair in layers and gradually, reduce the amount of hair cut at one time, avoid hair breakage or hair roughness caused by excessive pressure at one time, the micro gap formed by the stepped difference can guide the cut hair to slide out naturally, and reduce the hair residue. The round corner between the bevel tooth parts can not only smoothly guide the remaining hair into the tooth groove, but also disperse the stress generated during cutting, preventing the bevel tooth strips from being damaged during construction. In addition, the bevel tooth strips form multi-stage buffer contact with the tooth groove of the static blade when closed, further eliminating the cutting impact force, ensuring smooth and non-stuck thinning process, especially suitable for high-frequency and fine hair styling operations.

[0014] The moving blade bevel tooth scissors can be further provided with a first hinge hole in the moving blade, a second hinge hole in the static blade, a pivot arranged in the first hinge hole and the second hinge hole, a holding part between the second hinge hole and the second finger ring, and a hump in the middle of the holding part.

[0015] By adopting the technical scheme, the hump of the holding part is adapted to the curvature of the human thumb, enhances the fit and slip resistance when holding, and reduces hand fatigue after a long time of operation; at the same time, the distance between the second hinge hole and the holding part is optimized by the lever ratio, so that the closing action of the moving blade bevel tooth part is more labor-saving, especially suitable for micro-force operation required for fine thinning. The recessed areas on both sides of the hump form a natural finger position guide, ensuring stable holding of the scissors during high-speed cutting, avoiding uneven thinning caused by deviation. In addition, the hole diameter difference between the first hinge hole and the second hinge hole matches the pivot, which can adjust the tightness of the scissors, accurately align the bevel tooth part with the tooth groove of the static blade, and adjust the cutting resistance by rotating the pivot, adapting to the operation habits of different hair stylists.

[0016] The moving blade bevel tooth scissors can be further provided with a first tooth surface and a second tooth surface, the first tooth surface and the second tooth surface have an included angle a with the plane where the moving blade is located, any two adjacent first tooth surfaces and second tooth surfaces have an included angle β, the included angle a is 40°-50°, and the included angle β is 80°-90°.

[0017] By adopting the technical scheme, the sharp edge is formed at the connection between the first tooth surface and the second tooth surface, which can effectively cut off the hair, the first tooth surface and the second tooth surface have an included angle a of 40°-50° with the plane where the moving blade is located, that is, the opening angle of the moving blade, the helical gear has high sharpness and long service life in the opening angle range, and the first tooth surface and the second tooth surface have an included angle β of 80°-90°, which can not only ensure that the helical gear and the tooth blade can effectively cooperate to apply shearing force to cut off the hair, but also prevent the hair from slipping out between the helical gear and the tooth blade.

[0018] The moving blade helical tooth scissors can be further provided as follows: the included angle a is 45°, and the included angle β is 85°.

[0019] By adopting the technical scheme, when the included angle a between the helical gear and the plane of the moving blade is 45°, the sharpness and service life of the scissors are combined to achieve the best effect, the edge of the helical gear can be kept sharp for a long time to prevent blunting and improve the service life of the moving blade, and the included angle β of the first tooth surface and the second tooth surface is set to 85°, which can form sufficient occlusal pressure to achieve hair cutting with zero residue, and avoid blade surface friction loss caused by complete perpendicularity.

[0020] The moving blade helical tooth scissors can be further provided as follows: the first finger ring is provided with a first inclined surface, one side of the first finger ring is provided with a buffer part, a mounting hole is formed in the middle of the buffer part, and a limiting surrounding edge is arranged at the edge of the buffer part.

[0021] By adopting the technical scheme, the inclination angle of the first inclined surface is adapted to the curvature of the index knuckle, so that the pressure of the finger pulp is evenly distributed when holding, and joint fatigue during long-term trimming is reduced; the buffer part is inserted into the mounting hole, and the buffer part can buffer the collision between the first finger ring and the second finger ring during trimming, so as to absorb the shearing vibration and prevent the scissors from falling out of the hands of the barber due to vibration.

[0022] The moving blade helical tooth scissors can be further provided as follows: the second finger ring is provided with a second inclined surface, the end of the holding part is provided with an arc-shaped contact part, and the arc-shaped contact part is integrally formed with the holding part.

[0023] By adopting the technical scheme, the second finger ring cooperates with the first finger ring, the barber can effectively hold the scissors by inserting the thumb and the ring finger into the first finger ring and the second finger ring, respectively, so as to prevent the scissors from falling off the fingers, the second inclined surface can provide a suitable placement angle for the fingers, improve the comfort during holding, and make the opening and closing movement of the moving blade helical part more labor-saving, which is especially suitable for high-difficulty operation scenes such as hair root fine trimming or reverse shearing. In addition, the arc-shaped contact part is fitted with the curvature of the thumb pulp to form a stable support surface, enhance the axial control force during operation of the scissors, avoid position deviation caused by hand shaking, and the integrally formed design eliminates the gaps of traditional welding or riveting structures, reduces the risk of stress concentration, and improves the convenience and stability of operation of the scissors.

[0024] The utility model discloses the beneficial effect is:

[0025] First, the thinning function is realized through the cooperation of the moving blade and the static blade, the oblique tooth part provides the sharp edge for the scissors, the moving blade rotates to the static blade through the hinge, the tooth edge cooperation between the oblique tooth part and the arc tooth groove carries out the hair to be cut and thinned quickly.In addition, the oblique tooth part gradually contacts the tooth edge in the rotating process, so that the hair is cut and thinned gradually in the cutting process, instead of being broken by the full blade at one time, thereby reducing the damage to the hair scale.Meanwhile, the arc tooth groove can disperse the cutting pressure, avoid the hair breakage or the hair roughness caused by the local stress concentration, further reduce the jamming feeling when cutting, and improve the operation fluency.

[0026] Second, the oblique tooth bar includes the first tooth surface and the second tooth surface, the sharp edge is formed at the junction of the first tooth surface and the second tooth surface, can effectively cut the hair, the first tooth surface and the second tooth surface all have the angle α of 40 ° ~ 50 ° with the plane where the moving blade is, that is, the opening angle of the moving blade, the oblique tooth bar in this opening interval has higher sharpness and longer service life, when the angle α is 45 °, the first tooth surface and the second tooth surface of any two adjacent oblique tooth bars have the angle β of 80 ° ~ 90 °, which can not only ensure that the oblique tooth bar and the tooth edge can effectively cooperate to apply the cutting force to cut the hair, but also can prevent the hair from slipping out between the oblique tooth bar and the tooth edge, when the angle β is 85 °, the oblique tooth bar can form sufficient occlusion pressure to realize the hair cutting with zero residue, and also avoid the blade surface friction loss caused by the complete perpendicularity.

[0027] The utility model will be further explained in detail in connection with the drawings and examples. DRAWINGS

[0028] Figure 1 It is the whole structure schematic view of the moving blade oblique tooth scissors of the utility model;

[0029] Figure 2 It is the structure schematic view of the moving blade of the utility model;

[0030] Figure 3 It is the structure schematic view of the moving blade of the utility model; Figure 2 It is the structure enlarged schematic view of part A of the utility model;

[0031] Figure 4 It is the cross section schematic view of the moving blade of the utility model;

[0032] Figure 5 It is the structure schematic view of another angle of the moving blade of the utility model;

[0033] Figure 6 It is the structure schematic view of the static blade of the utility model;

[0034] Figure 7 It is the structure schematic view of the static blade of the utility model;Figure 6 Structure enlarged schematic view of middle B part;

[0035] Figure 8 Structure schematic view of another view angle of the static blade of the utility model;

[0036] Label annotation: moving blade 1, first finger ring 11, first inclined surface 111, buffer part 112, mounting hole 113, limiting surrounding edge 114, bevel gear part 12, bevel gear rack 121, first tooth surface 1211, second tooth surface 1212, round corner 122, first hinged hole 13, static blade 2, second finger ring 21, second inclined surface 211, tooth groove 22, tooth blade 23, second hinged hole 24, holding part 25, hump 251, contact part 252. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the utility model will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0038] As Figures 1 to 8 shown in a kind of moving blade bevel gear scissors, including moving blade 1 and static blade 2, moving blade 1 is hinged with static blade 2, moving blade 1 end is equipped with first finger ring 11, static blade 2 tail end is equipped with second finger ring 21, moving blade 1 is equipped with several interval setting bevel gear parts 12 at the edge close to static blade 2, static blade 2 is equipped with several interval setting arc tooth groove 22, tooth groove 22 forms tooth blade 23 between, tooth blade 23 and bevel gear part 12 are mutually cooperated to realize the shearing of hair. Bevel gear part 12 provides sharp edge for scissors, moving blade 1 is rotated to static blade 2 by hinged place, tooth blade 23 between bevel gear part 12 and arc tooth groove 22 cooperation, hair is carried out fast shearing and thinning. In addition, bevel gear part 12 is gradually contacted with tooth blade 23 in the rotating process, so that hair is progressively layered cut during shearing, not one-time full-blade pressure break, to reduce the damage to hair scale. At the same time, arc tooth groove 22 can accommodate more hair, can make hair keep stable, prevent hair from sliding or displacement when shearing, to improve the accuracy of shearing.

[0039] The bevel gear part 12 is provided with a plurality of stepped bevel gears 121, and a round corner 122 is arranged between the bevel gear parts 12. The stepped bevel gears 121 can reduce the amount of hair cut at one time by layered and progressive shearing, and avoid hair breakage or frizz caused by excessive pressure at one time. Meanwhile, the micro gap formed by the stepped difference can guide the cut hair to slide out naturally, reducing the hair residue. The round corner 122 between the bevel gear parts 12 can not only smoothly guide the remaining hair into the tooth groove 22, but also disperse the stress generated during shearing, preventing the bevel gears 121 from collapsing during the construction process. In addition, the bevel gears 121 form multi-stage buffer contact with the tooth groove 22 of the static blade 2 when closed, further eliminating the shearing impact force, ensuring a smooth and non-jamming thinning process, and being particularly suitable for high-frequency and fine hair trimming operations.

[0040] The moving blade 1 is provided with a first hinge hole 13, the static blade 2 is provided with a second hinge hole 24, a pivot is arranged in the first hinge hole 13 and the second hinge hole 24, a holding part 25 is arranged between the second hinge hole 24 and the second finger ring 21, and a hump 251 is arranged in the middle of the holding part 25. The hump 251 of the holding part 25 is convex and matches the curvature of the human thumb, which can enhance the fit and prevent slipping when holding, and reduce hand fatigue after a long time of operation. Meanwhile, the distance between the second hinge hole 24 and the holding part 25 is optimized by the lever ratio, so that the closing action of the bevel gear part 12 of the moving blade 1 is more labor-saving, and is particularly suitable for micro-force operation required by fine thinning. The recessed areas on both sides of the hump 251 form a natural finger position guide, which can ensure stable holding of the scissors during high-speed shearing, and avoid uneven thinning caused by deviation. In addition, the hole diameter difference between the first hinge hole 13 and the second hinge hole 24 is matched with the design of the micro taper of the pivot, which can adjust the tightness of the scissors occlusion, realize accurate alignment of the bevel gear part 12 and the tooth groove 22 of the static blade 2, and adjust the shearing resistance by rotating the pivot, which is suitable for the operation habits of different hair stylists.

[0041] The bevel gear 121 includes a first tooth surface 1211 and a second tooth surface 1212, and a sharp edge is formed at the connection between the first tooth surface 1211 and the second tooth surface 1212, which can effectively cut the hair. The first tooth surface 1211 and the second tooth surface 1212 both have an angle α of 40°-50° with the plane where the moving blade 1 is located, which is the opening angle of the moving blade 1. The bevel gear 121 in this opening range has high sharpness and long service life. When the angle α is 45°, the first tooth surface 1211 and the second tooth surface 1212 of any two adjacent bevel gears 121 have an angle β of 80°-90°, which can ensure that the bevel gear 121 and the tooth blade 23 can effectively cooperate to apply shearing force to cut the hair, and prevent the hair from slipping out between the bevel gear 121 and the tooth blade 23. When the angle β is 85°, the bevel gear 121 can form sufficient occlusion pressure to achieve zero hair residue, and avoid blade surface friction loss caused by complete perpendicularity.

[0042] The first finger ring 11 is provided with a first inclined surface 111, and the first finger ring 11 is provided with a buffer part 112 on one side, and the buffer part 112 is provided with a mounting hole 113 in the middle, and the buffer part 112 is provided with a limiting surrounding edge 114 at the edge. The inclination angle of the first inclined surface 111 is matched with the knuckle curvature of the index finger, so that the pressure of the finger pulp is uniformly dispersed when holding, and the joint fatigue of long-time trimming is reduced; the buffer part is inserted into the mounting hole 113, and the buffer part can buffer the collision between the first finger ring 11 and the second finger ring 21 during trimming, and cut the vibration, so that the scissors do not fall from the hands of the hairdresser due to vibration.

[0043] The second finger ring 21 is provided with a second inclined surface 211, and the end of the holding part 25 is provided with an arc-shaped contact part 252, which is integrally formed with the holding part 25. The second finger ring 21 cooperates with the first finger ring 11, the hairdresser inserts the thumb and the ring finger into the first finger ring 11 and the second finger ring 21 respectively, which can effectively hold the scissors, prevent the scissors from being separated from the fingers, and the second inclined surface 211 can provide a suitable placing angle for the fingers, improve the comfort during holding, make the opening and closing action of the oblique tooth part 12 of the moving blade 1 more labor-saving, and especially suitable for hair root finishing or reverse cutting and other high-difficulty operation scenes. In addition, the arc-shaped contact part 252 is matched with the curvature of the thumb pulp to form a stable support surface, enhances the axial control force when controlling the scissors, avoids the position deviation caused by the shaking of the hands, and the integrally formed design eliminates the gap of the traditional welding or riveting structure, reduces the risk of stress concentration, improves the convenience and stability of the scissors operation.

[0044] The above-mentioned embodiments only express several embodiments of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model.

Claims

1. A bevel tooth scissors with moving blade, comprising a moving blade and a static blade, the moving blade and the static blade are hinged by a pivot, the moving blade is provided with a first finger ring at the end, and the static blade is provided with a second finger ring at the tail end, characterized in that: The oblique tooth part is provided with a plurality of oblique tooth strips arranged in steps, and the oblique tooth parts are provided with round corners.

2. The bevel edged toothed scissors according to claim 1, wherein: The movable blade is provided with a first hinge hole, the fixed blade is provided with a second hinge hole, the pivot is arranged in the first hinge hole and the second hinge hole, the second hinge hole is provided with a holding part between the second finger ring, and the middle part of the holding part is provided with a hump.

3. The bevel edged toothed scissors according to claim 2, wherein: The oblique tooth strip comprises a first tooth surface and a second tooth surface, the first tooth surface and the second tooth surface have an included angle α with the plane where the movable blade is located, any two adjacent first tooth surfaces and second tooth surfaces have an included angle β, the included angle α is 40°-50°, and the included angle β is 80°-90°.

4. The bevel edged toothed scissors according to claim 2, wherein: The included angle α is 45°, and the included angle β is 85°.

5. The bevel edged toothed scissors according to claim 4, wherein: The first finger ring is provided with a first inclined surface, one side of the first finger ring is provided with a buffer part, the middle part of the buffer part is provided with a mounting hole, and the edge of the buffer part is provided with a limiting surrounding edge.

6. The bevel edged toothed scissor of claim 1, wherein: The second finger ring is provided with a second inclined surface, the end of the holding part is provided with an arc-shaped contact part, and the arc-shaped contact part is integrally formed with the holding part.

7. The bevel edged toothed scissor of claim 3, wherein: ​

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