JP3070891U - Haircut shears - Google Patents

Abstract

(57) [Summary] [PROBLEMS] There are few scissors 10 that can open and close the cut with a force suitable for the grip strength of the user, and the scissors 10 are sometimes difficult to use. SOLUTION: A screw shaft 41 having a male screw provided on a connecting shaft for connecting an upper main body 21 and a lower main body 11 with scissors 10 provided with blades 13 and 23 in a tip direction is used, and a head 43 of the screw shaft 41 is used. Is fixed to the upper body 21 or the lower body 11 by welding, and the upper body 21 and the lower body 11 are coupled to each other by the adjustment ring 60 screwed with the screw shaft 41, and the adjustment ring 60 and the upper body 21 or the lower body 11 are Legs between
A seat spring 50 that engages the upper body 21 or the lower body 11 with the screw 55 is fitted on the screw shaft 41, and a plurality of concave portions 69 or convex portions are provided on the back surface of the adjustment ring 60 in an annular shape. A protrusion 57 engaging with the concave portion 69 of the 60 or a groove engaging with the convex portion is provided.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to scissors for performing haircuts at home.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, when cutting own hair at home or when a family member cuts hair of a child or the like, a cutter or a small scissor provided with a blade between combs has been used. However, when performing haircuts using scissors, care must be taken to ensure that there is no mistake in cutting, and since the hair is cut many times continuously, the blades of the upper body and lower body The number of times that the cut formed by and was continuously opened and closed increased, and the finger was sometimes tired.

[0003] For this reason, haircuts with scissors must be focused on hand movements, and haircuts may not be performed as desired. Many cutters are used, and various haircut cutters are commercially available. And, similar to general scissors, haircutting scissors are usually combined with an upper body and a lower body, which are provided with blades in the tip direction to form a cut, using a connecting shaft such as a stud, and the connecting shaft is used as a fulcrum. The upper body is rotatable with respect to the lower body so as to open and close the cut, and a handle provided with a hole for inserting the thumb behind the position of the tack as a fulcrum is formed on one of the upper body and the lower body, The other of the upper body and the lower body has a handle with a hole for the index finger. Some haircutting scissors also have a handle having a shape that allows the index finger to be attached to the middle finger.

[0004]

[Problems to be solved by the invention]

 Since the upper body and the lower body of the scissors are generally combined with studs, the force required to rotate the upper body relative to the lower body to open and close the cut is fixed by each scissor. It is. On the other hand, since the strength of the fingers and the grip strength vary depending on the individual, there are few scissors that can open and close the cut with a force suitable for the grip strength of the user, and care must be taken to make these scissors difficult to use and not miscut. Haircuts with scissors were sometimes avoided at home.

[0005] The present invention solves such a problem and provides scissors that enable adjustment of the force required for opening and closing the cut and enable the user to open and close the cut with a force that is easy for the user to use. The purpose of the present invention is to provide scissors that can easily perform haircuts while reducing fatigue.

[0006]

[Means for Solving the Problems]

 According to the present invention, a screw shaft (41) having a male screw formed on a connecting shaft for connecting an upper body (21) and a lower body (11) of scissors (10) having blades (13, 23) in a tip direction is provided. The screw shaft (41) is provided with a female screw that is screwed to the screw shaft (41) and the head (43) of the screw shaft (41) is fixed to one of the upper body (21) and the lower body (11) by welding. The other of the upper body (21) or the lower body (11) shall be attached to the screw shaft (41) by the adjusting ring (60) so as not to come off from the screw shaft (41). The other upper body (21) or lower body (11) is engaged with the lower body (11) by engaging the leg (55) with the other upper body (21) or lower body (11). A seat spring (50) that rotates integrally with the screw shaft (41) is fitted to the screw shaft (41), and a plurality of concave portions (69) or convex portions are formed on the back surface of the adjustment ring (60) so as to be annularly arranged. The seat bar The thread (50) is provided with a projection (57) engaging with the concave portion (69) of the adjusting ring (60) or a groove engaging with the convex portion.

As described above, according to the present invention, the upper body (21) and the lower body (11) of the scissors (10) are rotatably connected by the screw shaft (41), which is a connecting shaft forming a male screw. Since the upper body (21) and the lower body (11) are prevented from coming off by screwing the adjusting ring (60) having the female screw to the screw shaft (41), the adjusting ring (60) is By rotating, the pressure contact force between the upper body (21) and the lower body (11), that is, the cut formed by the blade (23) of the upper body (21) and the blade (13) of the lower body (11) is reduced. The force required to open and close can be adjusted.

Then, the screw shaft (41) is welded and fixed to one of the upper main body (21) and the lower main body (11), and is engaged with the other of the upper main body (21) or the lower main body (11) by the leg (55). It has a seat spring (50) that rotates together with the other upper body (21) or lower body (11), and is engaged with the projection (57) of the seat spring (50). The upper main body (21) and the lower main body (11) are combined so that the upper main body (21) and the lower main body (11) do not come off with the adjusting ring (60) having the concave portion (69). Even if the cut is repeatedly opened and closed so as to rotate, the adjusting ring (60) is always in a fixed rotational position with respect to the other upper body (21) or lower body (11), and the screw shaft Since the (41) is welded and fixed to the upper body (21) or the lower body (11), the adjustment ring (60) is The rotation with respect to the screw shaft (41) is repeated with a rotation width according to the amount of movement, and the adjustment ring (60) rotates carelessly with respect to the screw shaft (41), and the force required to open and close the cut is reduced by the user. Can be prevented from changing contrary to the intention of the user.

[0009]

[Embodiment of the invention]

 As shown in FIG. 1, the haircut scissors 10 according to the present invention are provided with metal blades 13 and 23 forming a cut end in a front end direction, and a handle 15 and 25 for hanging a finger in a rear end direction. A scissors 10 composed of an upper main body 21 and a lower main body 11 formed of synthetic resin, and a fulcrum connecting the upper main body 21 and the lower main body 11 has a thick disk-shaped resin adjustment ring. It has 60.

As shown in FIGS. 2 and 3, the scissors 10 are such that a male screw 41 having a head 43 is attached to the lower main body 11 and the male screw is used as a coupling axis with the upper main body 21. The screw shaft 41, which is the coupling shaft, is passed through the shaft hole 31 of the upper body 21, the upper body 21 is mounted, the seat spring 50 is further fitted, the adjustment ring 60 is screwed in, and the upper cap 73 is covered. Thus, the scissors 10 are formed by combining the upper body 21 and the lower body 11.

The screw shaft 41 that couples the upper body 21 and the lower body 11 forms a male screw over the entire length from the immediate vicinity to the tip of the head 43, as well as the thickness of the metal plate portion of the lower body 11. The vicinity of the head 43, which is the same as the thickness of the metal plate portion of the upper body 21, is formed in a columnar shape, and a male screw may be formed only near the tip. The screw shaft 41 penetrates the metal plate portion of the lower main body 11 and the metal plate portion of the upper main body 21 to rotatably support the upper main body 21, and fixes the head 43 of the screw shaft 41 to the lower main body 11. The screw shaft 41 is securely fixed to the lower main body 11 by welding to the metal plate, and the lower cap 71 covering the head 43 is fitted into the cap hole 17 of the lower main body 11.

After the seat spring 50 is inserted into the screw shaft 41 and the adjusting ring 60 is further screwed into the screw shaft 41, the tip of the screw shaft 41 is crushed to form an enlarged portion 45. The upper cap 73 is fitted to the adjustment ring 60 after forming the enlarged portion 45 so as not to come off. As shown in FIG. 3, the seat spring 50 inserted between the adjustment ring 60 and the upper body 21 has a plurality of legs projecting outward from the outer periphery of the annular portion 51 having a flat annular shape and curving downward. An elastic thin metal plate having at least one protrusion 57 is provided on the upper surface of the annular portion 51 having a portion 55 and a through hole 53 provided in the center.

As shown in FIG. 4, the adjusting ring 60 has a cylindrical portion 67 protruding from the lower surface of the ring main body 61 in a cylindrical shape, and a screw hole formed with a female screw is formed at the center of the cylindrical portion 67. 65 is provided, and a plurality of grooves are provided radially on the lower end surface of the cylindrical portion 67 to form a plurality of concave portions 69 arranged in an annular shape. In addition, a cap hole 63 for fitting the upper cap 73 is provided on the upper surface of the adjustment ring 60, and a number of irregularities are formed on the outer peripheral edge of the ring main body 61 so that the adjustment ring 60 is gripped with a fingertip. The rotation can be easily performed.

The upper body 21 of the scissors 10 is provided with a shaft hole 31 that penetrates a metal portion, and an adjustment hole 33 having the same central axis as the shaft hole 31 is formed in a resin portion around the shaft hole 31. Is forming. The shaft hole 31 has a diameter very slightly larger than the outer diameter of the screw shaft 41, and the diameter of the adjustment hole 33 is slightly larger than the outer shape of the cylindrical portion 67 of the adjustment ring 60. . Further, the diameter of the adjustment hole 33 is slightly larger than the outer shape of the annular portion 51 of the seat spring 50, and the periphery thereof is a linear groove parallel to the axial direction of the shaft hole 31 and the adjustment hole 33. The shape has a mating groove 35.

Therefore, after the screw shaft 41 is passed through the shaft hole 31 and the upper main body 21 is supported by the screw shaft 41, the seat spring 50 is adjusted so that the screw shaft 41 passes through the through hole 53 of the seat spring 50. When inserted in 33, the legs 55 projecting outward from the annular portion 51 are engaged with the engagement grooves 35, and the seat spring 50 is rotated integrally with the upper body 21 while the upper body 21 is When the seat spring 50 does not rotate with respect to 11, the seat spring 50 can be fitted to the screw shaft 41 in a state where the seat spring 50 does not rotate due to external force.

Since a plurality of radial grooves forming the concave portion 69 are provided on the lower end surface of the cylindrical portion 67 of the adjusting ring 60, the screw holes 65 of the adjusting ring 60 are screwed to the screw shaft 41. When the adjustment ring 60 is rotated in this way, the projection 57 of the seat spring 50 and the concave portion 69 of the adjustment ring 60 are disengaged, and a click feeling can be generated in accordance with the rotation of the adjustment ring 60. .

Further, the engagement between the projection 57 of the seat spring 50 and the recess 69 of the adjustment ring 60 increases the rotational friction force between the adjustment ring 60 and the seat spring 50, and the adjustment ring 60 Although it rotates together with the seat spring 50 in accordance with the rotation, the rotation is repeated with a predetermined rotation width corresponding to the rotation of the upper body 21 with respect to the screw shaft 41, and the adjusting ring 60 is inadvertently moved by the screw shaft 41. The rotation of the upper body 21 and the lower body 11 can be prevented from loosening by preventing the careless rotation.

Therefore, after the outer periphery of the ring main body 61 is pinched and the ring main body 61 is rotated and the contact pressure between the upper main body 21 and the lower main body 11 is arbitrarily adjusted, the upper main body 21 is lowered so as to open and close the cut. Even if the rotation with respect to the main body 11 is repeated, the rotation angle between the adjustment ring 60 and the upper main body 21 is always fixed at a constant value, and the screw shaft 41 is fixed to the lower main body 11. 60 rotates inadvertently with respect to the screw shaft 41 beyond the rotation width of the upper body 21, and the force required for opening and closing the scissors 10 is maintained at a constant magnitude adjusted by the adjustment ring 60, and the cut Can be prevented from loosening.

As shown in FIGS. 2 and 3, the engagement between the seat spring 50 and the adjustment ring 60 is performed by providing a concave portion 69 in the cylindrical portion 67 of the adjustment ring 60 and providing a projection 57 in the seat spring 50. However, the present invention is not limited to this case.A radially linear groove or slit is provided in the annular portion 51 of the seat spring 50 to form discontinuous irregularities in the circumferential direction, and is formed on the lower surface of the cylindrical portion 67 of the adjustment ring 60. Protrusions may be provided to give a clicking feeling when the adjustment ring 60 is rotated.

In the above-described embodiment, a part of the cut and the main body are made of a metal plate, and a part covering the handles 15, 25 and a part of the blades 13 and 23 forming the cut is formed of synthetic resin. Even when the scissors 10 are used or the entire scissors 10 are made of metal, the screw shaft 41 is fixedly attached to the lower main body 11 as a unit, and the shaft hole 31 is centered on the upper surface around the shaft hole 31 of the upper main body 21. A large number of circumferentially discontinuous concave portions or convex portions are formed in an annular shape, and the tip ends of the plurality of leg portions 55 provided on the seat spring 50 are close to an acute angle, or a minute projection is provided at the tip of the leg portion 55. The leg 55 of the seat spring 50 can be engaged with the upper surface of the upper main body 21 by providing a projection 57 on the annular portion 51 of the seat spring 50 and engaged with the adjustment ring 60 to similarly open and close the opening and closing force. The scissors 10 can always be opened and closed with a constant force adjusted while adjusting the cutting force.

[0021]

[Effect of the invention]

 The present invention has a screw shaft that penetrates and couples the upper body and the lower body of the scissors, and the head of the screw shaft is welded and fixed to one of the upper body and the lower body. The adjustment ring has an upper body and a lower body so that the upper body and the lower body are not detached by the adjustment ring, and a seat spring is provided between the adjustment ring and the upper body or the lower body. The adjustment ring has a plurality of concave portions or convex portions on its back surface in an annular shape while being engaged with the main body or the lower main body, and the seat spring has a projection or an adjustment that engages with the concave portion of the adjustment ring. Haircut scissors having a groove that engages with the convex part of the ring.

[0022] Therefore, even if the adjusting ring is rotated to adjust the rotational hardness and the cut is repeatedly opened and closed, the adjusted hardness can be maintained. An easy-to-use scissors for cutting hair can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of scissors according to the present invention.

FIG. 2 is a sectional view showing an embodiment of the scissors according to the present invention.

FIG. 3 is an exploded perspective view showing one embodiment of the scissors according to the present invention.

FIG. 4 is a bottom perspective view of the adjustment ring used for the scissors according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Scissor 11 Lower body 13 Blade 15 Handle 17 Cap hole 21 Upper body 23 Blade 25 Handle 31 Shaft hole 33 Adjustment hole 35 Engagement groove 41 Screw shaft 43 Head 45 Enlarged portion 50 Seat spring 51 Annular portion 53 Through hole 55 Leg 57 Projection 60 Adjustment ring 61 Ring body 63 Cap hole 65 Screw hole 67 Cylindrical part 69 Recess 71 Lower cap 73 Upper cap

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[Procedure amendment]

[Submission date] February 21, 2000 (200.2.2
1)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Name of device

[Correction method] Change

[Correction contents]

[Name of device] Haircut shears

Claims (1)

[Utility model registration claims] 1. A screw shaft having a male screw formed at least in the vicinity of a distal end thereof as a connecting shaft that penetrates and connects an upper body and a lower body of scissors provided with a blade in a distal direction, and a head of the screw shaft. The part is welded and fixed to one of the upper main body or the lower main body, and has an adjusting ring provided with a female screw to be screwed with the screw shaft, and the other of the upper main body or the lower main body is separated from the screw shaft by the adjusting ring. A seat spring is mounted so as not to come off, and has a seat spring between the adjustment ring and the other upper body or lower body, and the seat spring has a leg and is engaged with the other upper body or lower body by the leg. The adjusting ring is rotated integrally with the upper body or the lower body, and the adjusting ring has a plurality of concave portions or convex portions arranged annularly on the back surface thereof. The seat spring is engaged with the concave portion of the adjusting ring. Have a groove that engages with the Haircut scissors characterized by: