JP2018027192A - Composite material for handle part of hairdressing scissors or for operation part of medical forceps, handle part of hairdressing scissors or operation part of medical forceps made of composite material, manufacturing method for handle part of hairdressing scissors or medical forceps using composite material, hairdressing scissors with handle part made of composite material, usage of composite material as handle part of hairdressing scissors or operation part of medical forceps - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new composite material for a handle part of hairdressing scissors or for an operation part of medical forceps.SOLUTION: Composite material includes resin, and metal particles distributed in the resin. The metal particles preferably contain tungsten particles. The resin preferably is thermoplastic resin, more preferably, includes nylon.SELECTED DRAWING: None

Description

  The present invention relates to a composite material for a handle part of a barber / beauty salon or an operation part of a medical forceps. The present invention also relates to a handle portion of a barber / beauty salon made of the composite material or an operation portion of a medical forceps. The present invention also relates to a method for manufacturing a handle portion of a barber / beauty salon or an operation portion of a medical forceps using the composite material. The present invention also relates to a barber / beauty salon provided with a handle made of the composite material. The present invention also relates to a method of using the composite material for a handle part of a barber / beauty salon or an operation part of a medical forceps.

  2. Description of the Related Art Conventionally, a barber handle (for example, a handle member 1b of Patent Document 1) and a medical forceps operation section (for example, a handle portion 8 of Patent Document 2) are made of a material made of only metal such as steel or titanium (metal material). ) Is machined.

  Further, the handle portion of the barber / beauty salon can also be manufactured by a metal powder injection molding method as disclosed in Patent Document 3. The handle part of a beauty salon made by the metal powder injection molding method is also made only of a metal material.

JP 2014-195582 A JP 2014-023922 A JP 2009-142594 A

  Since the handle part of the barber / beauty salon made of metal material and the operation part of the medical forceps are hard and inflexible, depending on the user, the wrist may be burdened, and tendonitis may be caused. However, the types of metal materials used in the manufacture of the handle part of the barber / beauty salon and the operation part of the medical forceps are limited, and it is difficult to greatly change the strength and density of the metal material used. Therefore, it has been difficult to change the characteristics (for example, flexibility and weight) of the handle portion of the barber / beauty salon and the operation portion of the medical forceps according to the user's request.

  Further, in the metal powder injection molding method, it is necessary to sinter a molded body made of a metal powder and an organic binder, and there is a problem that the manufacturing cost is increased.

  An object of the present invention is to provide a novel composite material for a handle part of a barber / beauty salon or an operation part of a medical forceps. It is an object of the present invention to provide a composite material for a handle part of a barber / beauty salon or an operation part of a medical forceps capable of changing material characteristics according to a user's request.

  An object of the present invention is to provide a handle portion of a barber / beauty salon made of the composite material or an operation portion of a medical forceps.

  An object of the present invention is to provide a method for manufacturing a handle portion of a barber / beauty salon or an operation portion of a medical forceps using the composite material.

  An object of this invention is to provide the hairdressing and beauty salon provided with the handle | pattern part which consists of the said composite material.

  An object of this invention is to provide the method of using the said composite material for the handle part of a barber / beauty salon, or the operation part of medical forceps.

  The present invention is a composite material for a handle portion of a barber / beauty salon or an operation portion of a medical forceps, and includes a resin and metal particles dispersed in the resin.

  In the composite material of the present invention, the metal particles preferably include tungsten particles.

  In the composite material of the present invention, the resin is preferably a thermoplastic resin.

  In the composite material of the present invention, the resin preferably contains nylon.

  The present invention also relates to a handle part of a barber / beauty salon made of the composite material described above or an operation part of a medical forceps.

  In the handle part of the barber / beauty salon or the operation part of the medical forceps of the present invention, the surface is preferably plated or painted.

  The present invention also relates to a method for manufacturing the handle part of the barber / beauty salon described above or the operation part of the medical forceps. The manufacturing method includes a step of mixing a molten resin and metal particles to produce a mixture, and a step of injection-molding the mixture.

  The present invention also relates to a barber / beauty salon provided with a blade part and the handle part described above.

  In the hairdressing and beauty salon of the present invention, it is preferable that the blade portion and the handle portion are separable.

  In the hairdressing and beauty salon of the present invention, it is preferable that the blade body and the handle are welded and joined.

  The present invention also relates to a method of using a composite material including a resin and metal particles dispersed in the resin for a handle portion of a barber / beauty salon or an operation portion of a medical forceps.

  In the composite material of the present invention, the material properties (for example, mechanical properties and density) can be changed by changing the kind of the resin and metal particles, the blending ratio of the resin and metal particles, and the like. Therefore, if the composite material is used, it is possible to provide a barber / beauty salon handle or a medical forceps operation unit having characteristics (for example, flexibility and weight) according to the user's request.

  Since the handle part of the barber / beauty salon manufactured using the composite material of the present invention or the operation part of the medical forceps has characteristics according to the user's request, the barber / beauty provided with the handle part A medical forceps including a scissors or the operation unit is easy to use for a user.

  The method for producing the handle part of the barber / beauty salon of the present invention or the operation part of the medical forceps includes a step of mixing a molten resin and metal particles to prepare a mixture and a step of injection molding the mixture. Unlike the metal powder injection molding method, it does not include a step of sintering the compact. Therefore, the manufacturing process of the handle portion of the barber / beauty salon or the operation portion of the medical forceps can be simplified, and the manufacturing cost can be reduced.

(A) is a top view of a barber and beauty salon, (b) is an exploded perspective view of a barber and beauty salon. (A)-(c) is a figure showing the modification of the hairdressing beauty salon of FIG. 1, (a) is a disassembled perspective view, (b) is B1 arrow sectional drawing and B2 arrow sectional drawing of (a). (C) is sectional drawing of the state which engaged the inclination part of the blade body part, and the inclination protrusion of the handle part. It is a disassembled perspective view showing the modification of the barber / beauty salon of FIG. (A) is a top view of a barber and beauty salon, (b) is an exploded perspective view of a barber and beauty salon. It is a front view of medical forceps.

  The present invention is described in detail below.

<Composite material>
The composite material for the handle part of the barber / beauty salon or the operation part of the medical forceps of the present invention includes at least a resin matrix and metal particles dispersed in the resin matrix.

  As the resin, for example, a thermoplastic resin such as nylon 6 (polyamide 6: PA6), nylon 12 (polyamide 12: PA12), polyphenylene sulfide (PPS) or the like can be used, and two or more kinds of resins are used in combination. You can also

  As the metal constituting the metal particles, for example, a single metal such as tungsten, gold, silver, platinum, aluminum, iron, stainless steel, titanium, zirconium or an alloy thereof can be used, and two or more kinds of metal particles can be used. Can also be used in combination. As the metal particles, for example, particles having an average particle diameter of several μm to several tens of μm can be used.

  The surface of the metal particles may be coated. Examples of the coating applied to the metal particles include a coating in which the metal particles are dispersed without agglomeration when mixed with a resin, an oxidation resistant coating, or a corrosion resistant coating.

  In addition to the resin and the metal particles, other substances (additives) may be added. Examples of other substances include fillers such as zinc oxide. By using inexpensive zinc oxide as a filler, the amount of expensive metal particles used can be suppressed.

  The material properties of the composite material (for example, mechanical properties such as bending strength and flexural modulus, density, etc.) should be adjusted by changing the type of resin and metal particles used and the blending ratio of resin and metal particles. Can do.

<Barber and medical forceps>
As shown in FIG. 1 and FIG. 4, the barber / beauty salon 1 </ b> A, 1 </ b> B includes a pair of scissors members 2 and a shaft member 3 composed of a plurality of members that pivotally support the pair of scissors members 2. Yes. The eaves member 2 includes a blade body portion 21 and a handle portion 22 which is a portion operated by a user to open and close the blade body portion 21, and the handle portion 22 is a composite material of the present invention. It is produced by.

  In the hairdressing and beauty salon 1A shown in FIG. 1, the blade body 21 includes a blade body main body 21a for cutting hair, a concave rotation receiving portion 21b into which a rotation member 31 such as a bearing is fitted, and a handle to be described later. It has a fitting hole 21c into which the shaft projection 22c of the part 22 is fitted, and a connecting part 21e formed with a female screw 21d into which the fastening member 4 is screwed. The handle portion 22 includes a handle portion main body 22a, a base portion 22b, a shaft portion protrusion 22c that is provided in the base portion 22b and fits into the fitting hole 21c, and a female screw 22d into which the fastening member 4 is screwed. Part 22e. The blade portion 21 and the handle portion 22 are connected by screwing the fastening member 4 to the female screw 21d of the connecting portion 21e and the female screw 22d of the connecting portion 22e.

  In the hairdressing and beauty salon 1A, when the blade part 21 or the handle part 22 is damaged, only the blade part 21 or only the handle part 22 can be replaced.

  2 (a) to 2 (c) are diagrams showing a modification of the barber / beauty salon 1A. The same members as those of the hairdressing and beauty salon 1A shown in FIG. For convenience of explanation, the upper and lower parts of FIG. 2B will be described as the upper and lower parts of the hairdressing and beauty salon 1A, respectively.

  As shown in FIGS. 2A and 2B, a portion of the rotation receiving portion 21b that is far from the connection portion 21e (of the rotation reception portion 21b, closer to the connection portion 21e with respect to the center of the fitting hole 21c). An inclined portion 21f is formed in a portion far from the connecting portion 21e (not a portion). 2B, the inclined portion 21f is inclined downward from the rotation receiving portion 21b toward the center of the fitting hole 21c.

  As shown in FIGS. 2A and 2B, the shaft protrusion 22c is formed with an inclined protrusion 22f that engages with the inclined portion 21f. The inclined protrusion 22f is a portion of the shaft portion protrusion 22c that is farther from the connecting portion 22e (the portion of the shaft portion protrusion 22c that is far from the connecting portion 22e than the portion near the connecting portion 22e with respect to the center of the shaft portion protrusion 22c). Is formed. As shown in the B-2 arrow sectional view of FIG. 2B, the inclined protrusion 22f is inclined downward from the upper surface of the shaft protrusion 22c toward the center of the shaft protrusion 22c.

  When the blade body portion 21 and the handle portion 22 are connected, as shown in FIG. 2C, the inclined portion 21f and the inclined protrusion 22f are engaged (contacted). Therefore, for example, even when the blade 21 is bent inward (toward the other blade 21) or the handle 22 is bent inward (toward the other handle 22). The portion 21b ′ far from the connecting portion 21e and the portion 22b ′ far from the connecting portion 22e in the base portion 22b do not separate from the opposite surface (outer surface) of the rotation receiving portion 21b. When the inclined portion 21f and the inclined protrusion 22f are not provided and the connecting portion 21e and the connecting portion 22e are merely connected by the fastening member 4, the blade portion 21 is bent inward or the handle portion 22 is When bent inward, the portion 21b ′ and the portion 22b ′ are separated from each other, thereby concentrating stress on the connecting portion 21e and the connecting portion 22e, and possibly damaging the connecting portion 21e or the connecting portion 22e. The However, the engagement between the inclined portion 21f and the inclined protrusion 22f prevents the portion 21b 'and the portion 22b' from separating, and stress concentration on the connecting portion 21e and the connecting portion 22e can be avoided.

  FIG. 3 is a diagram illustrating another modification of the hairdressing and beauty salon 1A. The same members as those of the hairdressing and beauty salon 1A shown in FIG. Two portions of the rotation receiving portion 21b far from the coupling portion 21e (the portion of the rotation receiving portion 21b far from the coupling portion 21e rather than the portion near the coupling portion 21e with respect to the center of the fitting hole 21c) Two female screws 21g are formed. Two female screws 22g that match the female screw 21g are formed on the base 22b. The female screw 22g is formed in a portion of the base portion 22b that is far from the connecting portion 22e (a portion of the base portion 22b that is far from the connecting portion 22e rather than a portion near the connecting portion 22e with respect to the center of the shaft protrusion 22c). Yes. A fastening member 5 such as a screw is screwed into the female screw 21g and the female screw 22g. Also by such a method, the part 21b 'and the part 22b' are prevented from being separated from each other, and stress concentration on the connecting part 21e and the connecting part 22e can be avoided.

  In the hairdressing and beauty salon 1B shown in FIG. 4, the blade body portion 21 and the handle portion 22 are connected to each other so as not to be separated by welding. As a method of welding and joining the blade part 21 and the handle part 22, for example, a joining method using a laser disclosed in JP-A-2006-016429 can be used.

  As shown in FIG. 5, the medical forceps 10 includes an operation member 11, an operation unit 12 made of the composite material of the present invention, a pipe 13 disposed between the operation member 11 and the operation unit 12, An operating mechanism (not shown) that is formed in the pipe 13 and operates (opens and closes and rotates) the operating member 11 by operating the operation unit 12 is provided. As the operation mechanism, a known mechanism can be adopted in the medical forceps.

<Manufacturing method of composite material, handle portion of barber / beauty salon and operation portion of medical forceps>
The composite material can be manufactured by weighing the resin and metal particles so as to have a predetermined blending ratio and mixing the molten resin and metal particles until they are uniform. The mixing temperature and mixing time of the resin and metal particles are appropriately determined according to the type of resin and metal particles used, the blending ratio of the resin and metal particles, and the like. Moreover, a known mixer (or kneader) can be used as a mixer for mixing the resin and the metal particles.

  The handle part of the barber / beauty salon and the operation part of the medical forceps can be manufactured by injection molding a molten mixture of a molten resin and metal particles.

  The handle portion of the barber / beauty salon and the operation portion of the medical forceps can also be manufactured by machining, such as cutting or grinding, the block material or plate material of the composite material of the present invention.

  The handle portion of the barber / beauty salon and the operation portion of the medical forceps may be subjected to a glossing (mirror finishing) treatment, an oxidation resistance treatment or a corrosion resistance treatment. Examples of such treatment include plating such as chrome plating or painting such as baking.

  Hereinafter, the present invention will be specifically described by way of examples. However, the present invention is not limited to these examples.

<Production of composite material>
In Examples 1 to 3, nylon 6 and tungsten particles of several μm to several tens of μm were heated and mixed to prepare a molten mixture, and the molten mixture was cooled to room temperature and solidified to prepare a composite material. In Example 4, a nylon 12, several μm to several tens of μm tungsten particles and zinc oxide (filler) are heated and mixed to prepare a molten mixture, and the molten mixture is cooled to room temperature and solidified to be combined. The material was made. Table 1 shows the types of resins, metal particles and additives used in Examples 1 to 4, and their blending ratios.

<Bending strength and flexural modulus>
The bending strength of the obtained composite material was measured according to ASTM D-790 using Autograph AGS-X (manufactured by Shimadzu Corporation). Moreover, according to ASTM D-790, the bending elastic modulus was measured from the bending load-deflection curve.

<Density>
The density of the obtained composite material was measured according to ASTM D-792 using an automatic hydrometer DMA-200H (manufactured by Shinko Denshi Co., Ltd.).

<Experimental result>
Table 1 shows the bending strength, flexural modulus, and density of the composite materials obtained in Examples 1 to 4. As shown in Table 1, the composite materials obtained in Examples 1 to 4 have a bending strength of 68 to 145 MPa, a flexural modulus of 4.7 to 23.0 GPa, and a density of 6.0 to 13.0 g / cm. ³ had.

  As described above, in the composite material of the present invention, the mechanical properties such as the bending strength and the bending elastic modulus and the density can be changed by changing the kind of the resin and the metal particles, the blending ratio of the resin and the metal particles, and the like. Can do. Thus, when a hairdressing scissor handle or medical forceps operation part is made from the composite material, the shape is the same as that made from a metal material, but the characteristics such as flexibility and weight are the same as the user. Can be changed according to the demands. Therefore, without changing the feel of the hand when grasping the handle part of the barber / beauty salon or the operation part of the medical forceps, the characteristics of the handle part of the barber / beauty salon or the operation part of the medical forceps can be changed according to the user's request. Can be changed.

  Further, since the composite material of the present invention contains a resin, it is more flexible than a metal material. As a result, the handle part of the barbershop or medical forceps made of the composite material is compared with the handle part of the barbershop or medical forceps made of a metal material when used. Therefore, the burden on the wrist of the user is reduced, which may help prevent tendonitis.

  The composite material of the present invention is manufactured by cooling a mixture of molten resin and metal particles, and is not sintered unlike the metal powder injection molding method. Therefore, the composite material of the present invention can be manufactured at a low cost.

  When manufacturing the handle part of a hairdressing and beauty salon with the manufacturing method of the present invention, plating can be employed in the glossing (mirror finish) process, so buffing, which was necessary when manufacturing from a metal material, is performed. There is no need to do it. As a result, the manufacturing process can be simplified and the manufacturing cost can be reduced.

DESCRIPTION OF SYMBOLS 1A Barber / Beauty Salon 1B Barber / Beauty Salmon 2 Barb member 21 Blade body part 22 Handle part 3 Shaft member 4 Fastening member 10 Medical forceps 11 Actuating member 12 Operation part 13 Pipe

Claims (11)

A composite material for a handle part of a barber / beauty salon or an operation part of a medical forceps,
Resin, and metal particles dispersed in the resin,
A composite material characterized by that. The metal particles include tungsten particles,
The composite material according to claim 1. The resin is a thermoplastic resin.
The composite material according to claim 1 or 2. The resin includes nylon,
The composite material according to any one of claims 1 to 3.   A handle portion of a barber / beauty salon made of the composite material according to claim 1 or an operation portion of a medical forceps. Surface is plated or painted,
The handle part of the barber / beauty salon according to claim 5 or the operation part of the medical forceps. A method for producing a handle part of a barber / beauty salon according to claim 5 or an operation part of a medical forceps,
Mixing the melted resin and metal particles to produce a mixture;
Injection molding the mixture;
Manufacturing method. The blade body,
The handle according to claim 5 or 6,
Barber / beauty salon with The blade part and the handle part are separable,
The barber / beauty salon according to claim 8. The blade body and the handle are welded and joined.
The barber / beauty salon according to claim 8.   A method of using a composite material containing a resin and metal particles dispersed in the resin for a handle part of a barber / beauty salon or an operation part of a medical forceps.

Images