JP5194190B1 - scissors - Google Patents

Abstract

An object of the present invention is to provide a heel that reduces fatigue of fingers when using the heel compared to a heel that does not have a hollow elastic body on the handle of the heel.
A hollow elastic body in which a hollow portion is formed by closing an opening of the groove in an annular elastic body having a groove formed on the outside and two blade bodies rotatably supported around an intersecting intersection. And a frame body integrally formed outside the hollow elastic body so as to cover the closed opening of the hollow elastic body, and by fixing the frame body to each of the two blade bodies, Compared with a heel that does not have a hollow elastic body in the handle of the heel, it is possible to provide a heel that reduces finger fatigue when using the heel.
[Selection] Figure 1

Description

The present invention relates to scissors.

  Japanese Patent Application Laid-Open No. 2003-310441 describes a heel in which a soft material layer is provided on a finger ring that is a part of a heel handle.

Japanese Patent Laid-Open No. 2003-310441

  An object of the present invention is to provide a bag having a hollow elastic body on a handle of the bag.

The scissors according to claim 1 include two blades that are rotatably supported around intersecting intersections, and a convex portion formed on one surface of the opening of the groove in an annular elastic body having a groove formed outside. By fitting a recess formed on the other surface of the opening, the opening of the groove is closed to form a hollow portion inside, and a pair of other grooves are formed on both sides of the annular elastic body along the groove. A hollow elastic body made of a soft material formed on the surface, and fixed to each of the two blade bodies, and a hard material is put into the pair of other grooves, and a closed opening of the hollow elastic body is formed in the hard material characterized in that and a frame body made of the rigid material formed integrally with the outer side of the hollow resilient body so as to cover at.

  According to the invention which concerns on Claim 1, compared with the heel which is not equipped with the hollow elastic body in the heel handle, the fatigue | fatigue of the finger at the time of using a heel can be decreased.

The top view which shows the bag which concerns on this invention (Example 1) Plan view of an annular elastic body according to the present invention (Example 1) A perspective plan view of an annular elastic body according to the present invention (Example 1) FIG. 1 is a partially enlarged view of a cross section taken along the line AA of the frame of FIG. Schematic sectional view of an injection mold for producing an annular elastic body according to the present invention (Example 1) FIG. 5 is a partially enlarged view of a portion A (a peripheral portion of the cavity 38) (Example 1). Schematic cross-sectional view of an injection mold for producing a half of a bag according to the present invention (Example 1) FIG. 7 is a partially enlarged view of the portion A (the peripheral portion of the cavity 48) (Example 1).

  The present invention will be described with reference to the drawings. In addition, this invention is not limited at all by the following examples.

An embodiment according to the present invention will be described with reference to FIGS.
In the first embodiment, a general bag will be described as an example.
5 to 8 omit illustrations other than the main part of the injection mold in order to simplify the description.

〔scissors〕
As shown in FIG. 1, the scissors 10 are supported so that two metal blades 1 and 2 can be rotated around an intersection where the support shaft 3 intersects. A blade portion is formed at one end of the blade body 1 and the blade body 2, and a finger hook ring portion 6 and a finger ring for passing a user's finger when using the collar 10 at the other end portion. The handle body 4 and the handle body 5 each provided with the portion 7 are fixed.

  The handle 4 has a finger ring 6 and a frame 8 made of a hard material integrally formed on the outside of the finger ring 6. Similarly, the handle 5 has a finger ring 7 and a frame 9 made of a hard material integrally formed on the outside of the finger ring 7. In Example 1, ABS resin is used as the hard material.

  2 and 3 are perspective views showing the ring-shaped elastic body 11 constituting the finger ring portion 6 and the finger ring portion 7. The annular elastic body 11 is made of a soft material, and has a groove 12 formed on the outer side (outer peripheral surface) in the circumferential direction. A pair of grooves 16 are formed along the grooves 12 on both side surfaces of the annular elastic body 11. When the annular elastic body 11 is attached to the flange 10, the opening 13 of the groove 12 is closed to form a hollow elastic body 17 having a hollow portion 15 formed therein, and a hard material integrated into the pair of grooves 16 is used. Put them together and mold them together. In this embodiment, a thermoplastic elastomer is employed as the soft material.

  Since the annular elastic body 11 is formed of a soft soft material and has a hollow portion when the hollow elastic body 17 is formed, when the person (user) uses the heel 10, the gripping condition of the heel 10 is increased. Will be better. For this reason, the workability | operativity of the cage | basket 10 can be improved. Moreover, since the finger ring part 6 and the finger ring part 7 are hollow inside, it is possible to reduce the weight and cost of the bag.

FIG. 4 is an enlarged view of the AA cross section of the handle 4 of FIG. Although a cross-sectional view of the handle 5 is not shown, the handle 4 and the handle 5 are symmetrically configured, so that the cross-sectional view of the handle 5 may be considered substantially the same as that shown in FIG. .
As shown in FIG. 4, the frame 8 is configured so that a part of the handle 4 integrally formed enters the pair of grooves 16 formed in the hollow elastic body 17 constituting the finger ring portion 6. Yes. For this reason, the finger ring 6 (hollow elastic body 17) is structured not to be detached from the frame 8.

[Injection mold for molding annular elastic body]
Next, an injection mold for manufacturing (molding) the annular elastic body 11 will be described.
FIG. 5 is a partial sectional view of an injection mold for manufacturing the annular elastic body 11. FIG. 6 is an enlarged view of the dotted line portion A in FIG. 5 as viewed from the N direction (arrow N), as a first mold having a first cavity surface for molding the annular elastic body 11. 3 is a partially enlarged view of a nesting 33 provided in the fixed side mold 31. FIG. In other words, FIG. 6 shows a first cavity surface in which the injection mold shown in FIG. 5 is separated (divided) at the parting line surface 39 and the nesting 33 of the fixed mold 31 is viewed in the direction of arrow N. 58 is a partially enlarged view in the vicinity of 58. FIG.

  As shown in FIG. 5, the injection mold 30 includes a fixed mold 31 as a first mold having a cavity 38 and a movable mold 32 as a second mold. The surface 39 is configured to be separable.

(Nested)
As shown in FIG. 6, a nesting (fixed side nesting) 33 is fixed to the fixed side mold 31, and a nesting (movable side nesting) 34 is fixed to the movable side mold 32. By closing the side mold 32, the insert 33 and the insert 34 are combined to form a cavity 38 for forming the annular elastic body 11.

Next, the movable mold 32 of the injection mold 30 is moved to the fixed mold 31 and clamped, and the soft material melted from the resin injection nozzle (not shown) of the injection molding apparatus is injected into the injection mold. 30. The molten soft material injected into the injection mold 30 is formed by clamping the injection mold 30 via the sprue 35 of the sprue bush provided on the fixed mold 31, the runner 36 and the gate 37. Is injected into the cavity 38.
In the first embodiment, since the cavity 38 is formed in a substantially circular shape, the molten soft material (thermoplastic elastomer) injected into the cavity 38 is injected into the cavity 38 and then cooled and solidified, whereby an annular elasticity is obtained. The body 11 can be molded.

[Injection mold for producing halves of cocoons]
Next, an injection mold for manufacturing the half of the bag 10 according to the present invention will be described.
FIG. 7 is a partial cross-sectional view of an injection mold for manufacturing the half of the bag 10 according to the present invention. 8 includes a first cavity surface 19 for forming the frame body 4 and the frame body 5 when the dotted line portion B of FIG. 7 is enlarged and viewed from the M direction (arrow M). It is the elements on larger scale of the insert 43 with which the fixed side metal mold | die 41 as a metal mold | die is equipped. In other words, FIG. 7 shows the first cavity surface in which the injection mold shown in FIG. 8 is separated (divided) by the parting line surface 49 and the nesting 43 of the fixed mold 41 is viewed from the arrow M. It is the elements on larger scale of 19 vicinity.

  As shown in FIG. 7, an injection mold 40 for manufacturing the half of the bag 10 according to the present invention includes a stationary mold 41 as a first mold having a cavity 48, A movable mold 42 as a mold is configured so as to be divided by a parting line surface 49.

(Frame nesting)
As shown in FIG. 8, a frame body nest (fixed side nest) 43 is fixed to the fixed side mold 41, and a frame body nest (movable side nest) 44 is fixed to the movable side mold 42. By clamping the fixed side mold 41 and the movable side mold 42, the frame body insert 43 and the frame body insert 44 are combined to form a cavity 48 for forming the frame body 4 and the frame body 5. .

  A resin injection nozzle (not shown) of the injection molding apparatus transfers the injection molding die 40 to the molten hard material via a sprue 45 of a sprue bush provided on the fixed side die 41, a runner 46, and a gate 47. It can be injected (injected) into the cavity 48 formed by clamping.

[Manufacturing method of rice cake]
Next, a method for manufacturing a bag using the injection mold 30 and the injection mold 40 will be described.

(Molding material)
In Example 1, a thermoplastic elastomer was used as a resin (pellet), which is a molding material for a ring-shaped elastic body formed of a soft material, in manufacturing a bag. In addition, as a resin (pellet) that is a molding material for a frame formed of a hard material, it is an abbreviation for a copolymer synthetic resin made of ABS resin “Acrylonitrile”, “Butadiene”, and “Styrene”. Was used.
The blade is made of SUS (short for “Stainless Used Steel”), which has a high anticorrosion effect.

(Production method)
First, the injection mold 30 shown in FIGS. 5 and 6 is prepared, the movable side mold 32 of the injection mold 30 is moved to the fixed mold 31 and clamped, and the resin injection nozzle of the injection molding apparatus A molten soft material (not shown) is injected into the injection mold 30. The molten soft material injected into the injection mold 30 is formed by clamping the injection mold 30 via the sprue 35 of the sprue bush provided on the stationary mold 4, the runner 36 and the gate 37. Is injected into the cavity 38.

After the melted soft material is filled in the cavity 38, the melted soft material is cured (cooled and solidified), and then the mold is opened to take out the annular elastic body 11. And the opening part 13 of the groove | channel 12 of the cyclic | annular elastic body 11 taken out from the injection mold 30 is closed, and the hollow elastic body 17 which formed the hollow part inside is formed.
The hollow elastic body 17 may be formed by attaching one surface and the other surface of the opening 13 of the groove 12 of the annular elastic body 11 with an adhesive. However, as shown in FIG. 4, it is preferable to form a convex portion on one surface of the opening 13 of the groove 12 of the annular elastic body 11 and a concave portion on the other surface, and fit the convex portion and the concave portion together. The hollow elastic body 17 can be easily formed from the annular elastic body 11. In this case, as shown in FIG. 4, it is better that the convex portion has a narrow base portion and a wide tip portion, and the concave portion has a wide base portion (bottom) groove width and a narrow tip portion groove width. . If it does in this way, after fitting a convex part and a crevice, it can be made difficult to return to hollow elastic body 11 from hollow elastic body 17.

  Next, the injection mold 40 shown in FIGS. 7 and 8 is prepared, and the hollow elastic body 17 and the blade body are set in advance (insert) in the cavity 48 of the movable mold 42 of the injection mold 40. To do. Thereafter, the movable mold 32 of the injection mold 30 is moved to the fixed mold 31 and clamped, and a molten hard material (molten resin) is injected from a resin injection nozzle (not shown) of the injection molding apparatus. Injection into the cavity 48 of the molding die 40. The molten resin injected into the cavity 48 is injected (injected) into the cavity 48 through the sprue 45 of the sprue bush provided in the fixed side mold 40, the runner 46 and the gate 47.

  After the cavity 48 is filled with the molten resin, the frame resin, the blade body, and the hollow elastic body 17 are integrally formed by curing (cooling and solidifying) the ABS resin of the thermoplastic resin that is the molten resin. A half is obtained. Thereafter, the mold is opened and the molded half of the bag is taken out. Here, the half body means one in which the handle 4 is fixed to the blade 1 or one in which the handle 5 is fixed to the blade 2. Moreover, a pair of half body means what fixed the handle 4 to the blade 1, and what fixed the handle 5 to the blade 2.

  Then, the obtained half of the ridge and another half of the ridge formed by the above method (a pair of halves) are overlapped so that the through holes formed in each half overlap, and the through holes are overlapped. The rod 10 according to the present invention shown in FIG. Needless to say, the support shaft 3 is fixed by a known method so as to ensure the function as a rod. The point where the centers of the through holes of the two halves overlap is an intersection.

Another embodiment of the present invention will be described.
In order to make the description easy to understand, only differences from the first embodiment will be described, and the same portions are denoted by the same reference numerals and the description thereof will be omitted.

  The difference between the second embodiment and the first embodiment is that in the first embodiment, the blade body is integrally formed with the frame body and the hollow elastic body in the mold, whereas in the second embodiment, the frame body and the hollow body are hollow. The elastic body is integrally molded with the injection mold 40, and after the injection molded product is taken out from the injection mold 40, the injection molded product and the blade body are fixed.

More specifically, for example, after taking out an injection molded product in which a frame body and a hollow elastic body are integrally molded from the injection mold 40, the blade body is assembled and fixed to the injection molded product by human work or the like. , Forming the half of the cocoon. And the through-hole (not shown) used as the spindle 3 which supports the half of the obtained scissors and the scissors half of the scissors so as to be rotatable around the intersection where the two blades intersect is formed. 1 is obtained by superimposing the halves of the heels and assembling them with the screws 14.
Through the above steps, the bag 10 shown in FIG. 1 can be manufactured.

  The above-described embodiments have been illustrated for the purpose of explanation, and the present invention is not limited thereto. The present invention can be recognized by those skilled in the art from the scope of the claims and the description. Modifications, deletions, and additions are possible as long as they are not contrary to the technical idea of the above.

  For example, the step of closing the opening 13 of the groove 12 of the annular elastic body 11 with a thermoplastic elastomer to form a hollow elastic body having a hollow portion may be performed in an injection mold.

  In the first embodiment described above, the opening and closing directions of the fixed side mold and the movable side mold may be the vertical direction or the horizontal direction.

  Moreover, you may shape | mold which decorates the surface of a frame, and may insert decorations, such as a metal and a jewel. As decoration, in addition to various illustrations (designs) such as animals and landscapes, various characters such as company logo marks, domains, brand names, catchphrases, etc. can be adopted and can be used for advertising purposes. In addition, aromatic materials such as tourmaline fine particles having a negative ion effect, bamboo charcoal deodorant material, and white snake may be used as decorations.

  Moreover, although the shape of the frame has been illustrated as an elliptical shape, it may be any shape as long as it does not hinder the movement of opening and rotating a polygonal shape such as a triangular shape by opening the blade of the scissors.

  Moreover, in the said Example, fixing to the half parts of a collar with a screw was illustrated, However, It does not pose a problem to insert and assemble a metal-made pin instead of a screw. There is no problem even if the pins and screws are inserted by combining the halves of the collar in the injection mold. There is no problem even if it is adopted in the manufacturing method of right-handed and left-handed cocoons.

  Further, by using copper and SUS (abbreviation of “Stainless steel”) having a high anticorrosion effect as the material of the pin and screw exemplified above, corrosion of the surface of the pin can be prevented. In the case of a material mainly composed of iron, the corrosion problem can be solved by applying a surface treatment such as nickel plating.

  In addition, when the pin requires bending strength or the like, when aluminum or copper alone is insufficient, the pin has a high strength, for example, a sandwich structure of SUS and an alloy of iron or copper, or a two-layer structure. You may make such a complex.

  In the examples, the ABS resin, which is a thermoplastic resin employed in the frame, is exemplified, but various other thermoplastic resins such as polypropylene and polystyrene, thermosetting resins, thermoplastic elastomers, and the like can be used together. is there. Thermosetting resins are characterized by high heat resistance and somewhat higher rigidity than the thermoplastic resins described below, while thermoplastic resins are mass-produced as represented by injection molding. There is a feature suitable for. Any synthetic resin such as polypropylene, elastomer, a mixture of polypropylene and elastomer, PES (polyethersulfone), polyacetal, polyimide, or polyarylate is not problematic. When the thermoplastic resin is an ABS resin, the elastic plastic is preferably a combination of a styrene elastomer, a polyurethane elastomer, a polyester elastomer or a polyamide elastomer.

  Incidentally, the thermosetting resin is not limited as long as it is a thermosetting resin generally used for molding. Examples include epoxy resin diallyl phthalate prepolymer, diallyl phthalate resin, silicone resin, phenol resin, unsaturated polyester resin, polyimide resin, polyurethane resin, melamine resin, and urea resin.

  The thermoplastic resin is not particularly limited as long as it is a thermoplastic resin generally used for molding. For example, polystyrene resin (PS), high impact polystyrene resin (HIPS), styrene-maleic acid copolymer resin, butadiene-styrene copolymer resin, acrylic nitrilo / styrene copolymer resin (AS), acrylic nitrilo / butadiene / styrene. Styrenic resin represented by copolymer resin (ABS), polyphenylene ether resin (PPE), modified polyphenylene ether resin, and modified polyphenylene oxide resin {PP0 (E)}, polyethylene (PE), chlorinated polyethylene, ethylene- Olefin resins such as α-olefin copolymer resin, modified polyolefin, transparent polyolefin, 6-nylon (PA6), 6,6-nylon (PA66), reinforced polyamide, PA-MCX, amorphous polyamide, aromatic polyamide Amide resins such as aramid), polyethylene terephthalate (PET), polyester resins typified by polyethylene terephthalate (PET), vinyl chloride resin (PVC), polyvinyl acetate resin (PVAc), acrylic modified polychlorinated resin Vinyl-based resins typified by vinyl, cellulose acetate (CA), cellulose acetate butyrate (CAB), cellulose-based resins (cellulose derivatives) typified by ethyl cellulose, celluloid cellophane, and other polymethacrylates (PMMA, acrylic resin, methacrylic) Resin), polyvinylidene chloride resin (PVDC), polytetrafluoroethylene (PTFE), ethylene polytetrafluoroethylene copolymer resin (ETFE), and other fluororesins, ethylene vinyl acetate copolymer resin (EVA), eye Onomer (IO), modified polycarbonate, polycarbonate resin (PC), polyarylate (PAR, U polymer), polysulfone (PSU), polyethersulfone (PES), polythioethersulfone (PTES), chlorinated polyether, thermoplastic Polyimide (TPI), polyamino bismaleimide (PABM), polyketone, polyamideimide (PAI), polyetheretherketone (PEEK), polyetherketone (PEK), thermoplastic polyurethane (PUR), polyvinyl acetal, polyvinyl alcohol, polychlorinated Vinylidene, polyethernitrile (PECN), polyphenylene sulfide (PPS), polyetherimide (PEI), allyl resin, ethylene-vinyl acetate copolymer resin, ethylene-vinyl chloride copolymer Copolymer resin, furan resin, methacryl-styrene copolymer resin, nitrile resin, xylene resin, polymethylpentene, polyallylsulfone (PASF), polybenzimidazole (PBI), polybutadiene resin, polybutylene, aromatic polyester, olefin vinyl alcohol Polymer resin, petroleum resin, polyoxymethylene (POM), polyacetal (POM), liquid crystal polyester (LCP), styrene-butadiene (SBC), polyolefin (TPO), urethane (TPU), polyester (TPEE) Elastomers represented by polyamide-based (TPAE), 1,2-polybutadiene (PB), polyvinyl chloride-based (TPVC), 1,2-polybutadiene, trans 1,4-polyisoprene, chlorinated polyethylene, etc. Resin PPE / PS, PPE / HIPS, PPE / PA, PC / ABS, PC / HIPS, PPE / PA, which have been modified by properties such as render, copolymerization, and graft polymerization. Examples thereof include polymer alloys (blend polymers) such as PES / LCP, fillers such as glass fibers, carbon fibers and talc, and composite materials reinforced with reinforcing agents.

  The styrenic resin is a resin containing at least 25% by weight or more of a styrenic monomer in a polymer, and is a homopolymer of a styrenic monomer or two or more kinds of styrenic monomers. A polymer, a copolymer of the styrenic monomer and one or more of other monomers copolymerizable with the styrenic monomer, and the diene rubber with the styrenic monomer. A graft copolymer obtained by graft polymerization of one kind or two or more kinds, a micro blend or a polymer blend of the styrene resin and the diene rubber, and the like are included.

  Typical examples of the styrenic resin include polystyrene (PS) which is a styrene homopolymer, a blend of a rubbery polymer obtained by graft-polymerizing styrene to the diene rubber, acrylic rubber and olefin rubber and polystyrene. High impact polystyrene (HIPS), which is a polymer, is a rubber material added for the purpose of imparting mechanical properties to the resin. The rubber material added for the purpose of imparting is olefin rubber and / or acrylic rubber, or mono-based materials of these saturated rubbers), acrylonitrile / styrene copolymer (AS), styrene / butadiene copolymer, styrene・ Α-methylstyrene copolymer, styrene / maleic anhydride copolymer, styrene / methyl Graft rubber obtained by graft polymerization of acrylonitrile monomer and styrene monomer to diene rubber, acrylic rubber, and olefin rubber to tacrylate copolymer, styrene / ethylene copolymer, styrene / ethylene / propylene / butadiene copolymer Blend polymer of polymer and acrylonitrile / styrene copolymer, ACS, which is a mixed resin of chlorinated polyethylene and acrylonitrile / styrene copolymer, Acrylonitrile containing olefin rubber by graft polymerization of acrylonitrile and styrene to olefin rubber AES (ABS), which is a mixed resin of terpolymer of styrene and styrene and acrylonitrile / styrene copolymer, and acrylic rubber-containing acrylo by graft polymerization of acrylonitrile and styrene to acrylic rubber AAS (AAS, ABS), which is a mixed resin of a terpolymer of tolyl and styrene and an acrylonitrile / styrene copolymer, an acrylonitrile / dimethylsiloxane / styrene copolymer and an acrylonitrile / butadiene / styrene copolymer resin There is ASIS which is a mixed resin. Here, ABS is a rubber material added for the purpose of imparting mechanical properties to the resin, and butadiene rubber or butadiene rubber as a main component. ABS is a rubber material added for the purpose of imparting mechanical properties to the resin. Means an olefin rubber and an acrylic rubber, or those having a saturated rubber as a main component.

A typical example of the polyphenylene ether (PPE) resin is poly (2,6-dimethyl-1,4-phenylene ether) obtained by oxidative polymerization of 2,6-xylenol with a copper catalyst. Further, a copolymer of 2,6-dimethyl-1,4-phenylene ether and 2,3,6-trimethyl-1,4-phenylene ether, 2,6-dimethylphenol and 2,3,6-trimethylphenol There are copolymers of In addition, the PPE resin modified with a styrene resin and / or an amide resin is also included in the modified PPE resin and the modified PPe resin of the present invention.
The modified PPE refers to the polymer alloy / polymer blend of HIPS, ABS, and PPE, and the modified PPE refers to the polymer alloy / polymer blend of HIPS, ABS, and PPE.

  The polycarbonate resin (PC resin) can be used alone as a molding (mold) thermoplastic resin, but as a material mainly mixed with the styrene resin or PPE resin to form a polymer alloy / polymer blend. used. There is no particular limitation as long as it is a polycarbonate derived from an aromatic dihydroxy compound.

  Examples of the aromatic dihydroxy compound include 2,2-bis (4-hydroxyphenyl) propane (also referred to as bisphenol A), tetramethylbisphenol A, tetrabromobisphenol A, and bis (4-hydroxyphenyl) -p-diisopropyl. Benzene, hydroquinone, resorcinol, 4,4′-dihydroxydiphenyl, etc. can be used, but bis (4-hydroxyphenyl) alkane dihydroxy compounds are usually selected, and bisphenol A or bisphenol A and other fragrances are particularly preferred. Combinations with group dihydroxy compounds are preferred.

  The polyolefin resin is a resin obtained by polymerizing one or more of α-olefin using a radical initiator, a metal oxide catalyst, a Ziegler-Natta catalyst, a Kaminsky catalyst, etc. Two or more kinds of the resins may be mixed.

  The polyolefin resin may be copolymerized with another monomer copolymerizable with the α-olefin. Typical examples are polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, and the like. Although it is used as a molding material singly or in the form of a mixture of two or more, it may be further mixed with other thermoplastic resins such as the styrene resin, for example, PS, HIPS, AS, ABS resin, PPE resin, etc. .

  The α-olefin is a linear, branched or cyclic olefin having a polymerizable double bond at the α-position, and usually has 2 to 8 carbon atoms. Specific examples of α-olefins include ethylene and propylene.

  The polyarylate is a resin having high heat resistance and flame retardancy obtained by polymerization of a bisphenol compound and a phthalic acid compound represented by terephthalic acid and isophthalic acid. Hydroxyphenyl) propane (also referred to as bisphenol A), tetramethylbisphenol A, tetrabromobisphenol A, bis (4-hydroxyphenyl) -p-diisopropylbenzene, hydroquinone, resorcinol, 4,4′-dihydroxydiphenyl, etc. are used. However, bis (4-hydroxyphenyl) alkane dihydroxy compounds are usually selected, and bisphenol A or a combination of bisphenol A and other aromatic dihydroxy compounds is particularly preferred.

  Representative examples of the bisphenol include bis (3,5-dimethyl-4-hydroxyphenyl) methane, bis (3,5-diethyl-4-hydroxyphenyl) methane, and bis (3,5-dibromo-4-hydroxy). Phenyl) methane, 1,1-bis (3,5-dimethyl-4-hydroxyphenyl) ethane, 1,1-bis (3,5-diethyl-4-hydroxyphenyl) ethane, bis (3,5-dibromo- 4-hydroxyphenyl) ethane, 1,1-bis (3,5-dimethyl-4-hydroxyphenyl) propane, 2,2-bis (3,5-dimethyl-4-hydroxyphenyl) propane, 1,1-bis (3,5-diethyl-4-hydroxyphenyl) propane, 2,2-bis (3,5-diethyl-4-hydroxyphenyl) propane, 1,1-bis 3,5-dibromo-4-hydroxyphenyl) propane, 2,2-bis (3,5-dibromo-4-hydroxyphenyl) propane, 1,1-bis (3,5-dimethyl-4-hydroxyphenyl) butane 2,2-bis (3,5-dimethyl-4-hydroxyphenyl) butane, 1,1-bis (3,5-diethyl-4-hydroxyphenyl) butane, 2,2-bis (3,5-diethyl) -4-hydroxyphenyl) butane, 1,1-bis (3,5-dibromo-4-hydroxyphenyl) butane, 2,2-bis (3,5-dibromo-4-hydroxyphenyl) butane, 1,1- Bis (3,5-dimethyl-4-hydroxyphenyl) cyclohexane, 1,1-bis (3,5-diethyl-4-hydroxyphenyl) cyclohexane, 1,1-bis (3 -Dibromo-4-hydroxyphenyl) cyclohexane, bis (3,5-dimethyl-4-hydroxyphenyl) phenylmethane, bis (3,5-diethyl-4-hydroxyphenyl) phenylmethane, bis (3,5-dibromo- 4-hydroxyphenyl) phenylmethane, 1,1-bis (3,5-dimethyl-4-hydroxyphenyl) -1-phenylethane, 1,1-bis (3,5-diethyl-4-hydroxyphenyl) -1 -Phenylethane, 1,1-bis (3,5-dibromo-4-hydroxyphenyl) -1-phenylethane, bis (3,5-dimethyl-4-hydroxy) diphenylmethane, bis (3,5-diethyl-4 -Hydroxy) diphenylmethane, bis (3,5-dibromo-4-hydroxy) diphenylmethane, bis (3,5- Dimethyl-4-hydroxyphenyl) ether, bis (3,5-diethyl-4-hydroxyphenyl) ether, bis (3,5-dibromo-4-hydroxyphenyl) ether, bis (3,5-dimethyl-4-hydroxy) Phenyl) sulfide, bis (3,5-diethyl-4-hydroxyphenyl) sulfide, bis (3,5-dibromo-4-hydroxyphenyl) sulfide, bis (3,5-dimethyl-4-hydroxyphenyl) sulfone, bis (3,5-diethyl-4-hydroxyphenyl) sulfone, bis (3,5-dibromo-4-hydroxyphenyl) sulfone, bis (3,5-dimethyl-4-hydroxyphenyl) ketone, bis (3,5- Diethyl-4-hydroxyphenyl) ketone, bis (3,5-dibromo-4-hydro Shifeniru) and ketone, and the like. Among these, bis (3,5-dimethyl-4-hydroxyphenyl) methane, 2,2-bis (3,5-dimethyl-4-hydroxyphenyl) propane, 1,1-bis (3,5- Dimethyl-4-hydroxyphenyl) cyclohexane, 1,1-bis (3,5-dimethyl-4-hydroxyphenyl) -1-phenylethane, bis (3,5-dimethyl-4-hydroxyphenyl) phenylmethane, bis ( 3,5-dimethyl-4-hydroxyphenyl) sulfone, bis (3,5-dimethyl-4-hydroxyphenyl) ether, bis (3,5-dimethyl-4-hydroxyphenyl) ketone and the like. Among the bisphenols, polyarylate using bisphenol substituted with halogen is excellent in flame retardancy.

  A part of bisphenol may be replaced with other bisphenols as long as the characteristics are not substantially impaired. Such bisphenols include hydroquinone, resorcinol, dihydroxybiphenyl, bis (hydroxyphenyl) alkane, bis (hydroxyphenyl) cycloalkane, bis (hydroxyphenyl) sulfide, bis (hydroxyphenyl) sulfone, bis (hydroxyphenyl) ether, Bis (hydroxyphenyl) ketones and their nuclear halides are mentioned.

  The ratio of the residues of terephthalic acid and isophthalic acid is not particularly limited, and the constituent components may be used alone or in combination depending on the purpose. In that case, a polyarylate having higher heat resistance is obtained as the terephthalic acid residue is increased.

  Polyarylate containing an amount exceeding 10 mol% of the residue of isophthalic acid has improved toughness. Therefore, when used as an engineering plastic, it is preferable to determine the ratio of terephthalic acid and isophthalic acid residues according to the required properties.

  In the polyarylate, a part of terephthalic acid and isophthalic acid may be replaced with other dicarboxylic acids as long as the properties are not substantially impaired. Examples of the dicarboxylic acid include alicyclic such as naphthalenedicarboxylic acid, bis (p-carboxyphenyl) alkane, aromatic dicarboxylic acid such as 4,4′-dicarboxydiphenyl ether, cyclohexanedicarboxylic acid, adipic acid, sebacic acid, and glutaric acid. Alternatively, aliphatic dicarboxylic acids and halides thereof can be used.

  Examples of the acid halides of terephthalic acid and isophthalic acid include terephthalic acid chloride, terephthalic acid bromide, isophthalic acid chloride, isophthalic acid bromide, etc., and hydrophobicity used to dissolve acid halides of terephthalic acid and isophthalic acid As the organic solvent, those which are incompatible with water and dissolve the produced polyarylate are preferable. However, in some cases, an organic solvent that does not dissolve the generated polyarylate can be used. In this case, when the polyarylate has a molecular weight of a certain level or more, it precipitates out of the system.

  It is possible to add pigments, heat stabilizers, antioxidants, weathering agents, flame retardants, plasticizers, mold release agents, reinforcing materials and the like to the polyarylate as long as the properties are not significantly impaired. These additives may be added at the time of polymerization, and polyarylate may be added after the isolation. Examples of the heat stabilizer and antioxidant include hindered phenols, phosphorus compounds, hindered amines, sulfur compounds, copper compounds, and mixtures thereof, and phosphorus compounds are particularly effective. Examples of such phosphorus compounds include phosphorous acid, phosphite, orthophosphoric acid, orthophosphoric acid ester and the like. The reinforcing materials include clay, talc, calcium carbonate, zinc carbonate, wollastonite, silica, alumina, magnesium oxide, calcium silicate, asbestos, sodium aluminate, calcium aluminate, sodium aluminosilicate, magnesium silicate, water Aluminum oxide, calcium hydroxide, barium sulfate, potassium light vane, sodium light van, iron light van, glass balloon, carbon black, zinc oxide, antimony trioxide, boric acid, borax, zinc borate, zeolite, hydrotalcide, metal Examples thereof include fiber, metal whisker, ceramic whisker, potassium titanate, ticker boron, mica, graphite, and glass fiber.

  Furthermore, it is also possible to mix | blend another polymer with a polyarylate as needed. Examples of the polymer include polybutadiene, butylene-styrene copolymer, acrylic rubber, ethylene-propylene copolymer, EPDM, natural rubber, chlorinated butyl rubber, chlorinated polyethylene, and other rubbery copolymers, styrene-butadiene blocks. Elastomers such as copolymers, styrene-butadiene block copolymers, butadiene-styrene radial teleblock copolymers, styrene-maleic anhydride copolymers, styrene-phenylmaleimide copolymers, nylon 6, nylon 66, nylon 46 , Polyamides such as nylon 12 and nylon 610, polypropylene, butadiene-acrylonitrile copolymer, polyvinyl chloride, PET, PBT, polyacetal, polyvinylidene fluoride, polysulfone, PPS, polyethersulfone, phenol Shi resin, PPO, PMMA, polyether ketones, and polycarbonate.

  The resin that can be used in the present invention has been described in detail above. However, two or more of the thermoplastic resins may be mixed into a polymer blend or a polymer alloy.

  The polymer blend or polymer alloy is produced, for example, by screw kneading in an extruder.

  Furthermore, in order to improve impact resistance, the thermoplastic resin includes the diene rubber, olefin rubber, acrylic rubber, etc., such as NR, BR, SBR, STR, IR, CR, CBR, IBR, IBBR, Rubbers such as IIR, acrylic rubber, polysulfide rubber, urethane rubber, polyether rubber, epichlorohydrin rubber, chlorobutyl rubber, hydrogenated nitrile rubber, fluorine rubber, ethylene-vinyl acetate copolymer, acrylic resin, ethylene-ethyl acrylate Other thermoplastic resins such as a copolymer, a vinyl resin typified by vinyl chloride, and polynorborinene may be mixed.

  Furthermore, in order to improve the impact resistance of the thermoplastic resin, a thermoplastic elastomer (TPE) may be added. The thermoplastic elastomer has properties of vulcanized rubber at room temperature but is thermoplastic and can be thermoformed, and is composed of a hard segment and a soft segment.

  Examples of the TPE include urethane elastomers, styrene elastomers, vinyl elastomers, and ester elastomers.

  The thermosetting resin or thermoplastic resin is flame retardant by adding a flame retardant. Flame retardancy of ABS, ABS, and HIPS, which are thermoplastic resins, can be achieved by adding a flame retardant (material) in addition to a polymer alloy of PPE resin and polycarbonate resin. Since polyarylate is originally a flame retardant resin, it can be easily made flame retardant by adding a flame retardant.

  Typical examples of flame retardants include antimony trioxide, antimony flame retardant, antimony pentoxide, sodium antimonate, magnesium hydroxide, aluminum hydroxide, zinc borate, guanidine guanidine guanidine phosphate, and guanidine phosphate. , Phosphoric acid guanylurea, zirconium flame retardant, tin compound, molybdenum compound, red phosphorus, etc., phosphoric acid ester, and phosphorus compound, tris (chloroethyl) phosphate, tris (monochloropropyl) phosphate, tris β-chloropropyl phosphate, tris (Dibromophenyl) phosphate, tris (tribromoneopentyl) phosphate, dimethylmethyl phosphate, tris (dichloropropyl) phosphate, triallyl phosphate, tris (3-hydroxypropyl) phosphate Finoxide, tris (tribromophenyl) phosphate, tetrakis (2-chloroethyl) ethylene diphosphate, glycidyl-α-methyl-β-di (butoxy) phosphenyl propionate, dibutylhydroxymethylphosphonate, di (butoxy) Phosphinyl propyl anide, dimethyl methyl phosphonate, tris (2-chloroethyl) orthophosphate, aromatic condensed phosphate, halogen-containing condensed organic phosphate, ethylene bis-tris (2-cyanoethyl) phosphonium bromide, Gee (poly Oxyethylene) -hydroxymethyl phosphonate, phosphorus / chlorine-containing oligomer, ammonium polyphosphate, β-chloroethyl acid phosphate, β-chloropropyl phosphate, butyl pyrophosphate DOO, butyl acid phosphate, butoxyethyl acid phosphate, 2-ethylhexyl acid phosphate, melamine phosphate, phosphorus - chlorine, organic phosphorus, phosphate-based, there is a red phosphorus-based flame retardants.

  Typical examples of the chlorinated flame retardant include chlorinated paraffin, chlorinated polyolefin, chlorinated polyethylene, perchlorocyclopentadecane, and a mixture of chlorinated paraffin and anamottin trioxide.

Typical brominated flame retardants are brominated epoxy, brominated polycarbonate, hexabromobenzene, decabromodiphenyl oxide, polydibromophenylene oxide, bis (tribromophenoxy) ethane, ethylene bis-dibromonorbornane dicarboximide , Ethylenebis-tetrabromophthalimide, dibromoethyl-dibromocyclohexane, dipromoneopentyl glycol, 2,4,6-tribromophenol, tribromophenol allyl ether, tetrabromo-bisphenol A, and tetrabromo-bisphenol A derivatives, tetrabromo- Bisphenol S, tetradecabromo diphenoxybenzene, tris- (2,3-dibromopropyl-1) -isosanurate, 2,2-bis (4-hydroxy-3,5 di Lomophenyl) propane, 2,2-bis (4-hydroxyethoxy-3,5-dibromophenyl) propane, poly (pentabromobenzyl acrylate), tribromostyrene, pentabromophenol, brominated polyethylene, dibromoneopentyl glycol tetra Carbonate, bis (tribromophenyl) fumaranide, N-methylhexabromodiphenylamine, halogen-containing polyphosphate, aromatic bromine brominated epoxy resin, brominated polystyrene, brominated flame retardant (trade name: Switzerland, Sand Sandoflam 5071 etc.) Pentabromotoluene, pentabromophenyl oxide, pentabromophenyl oxide and phosphate ester, mixture of stabilizers, hexabromocyclododecane, hexabromophenyl ether, hexabu Mo phenyl ether, hexabromodiphenyl ether, octabromodiphenyl oxide, there are magnesium hydroxide and the like.

  Typical examples of reactive flame retardants are: Creinic anhydride, tetrabromophthalic anhydride, tetrabromo-bisphenol A, diethoxy-bis- (2-hydroxyethyl) -aminoethyl phosphate, dibromo-cresyl-glycidyl ether, dibromophenol , Dibromocresol, tribromophenol, phenyl phosphonic acid, phenyl phosphonic acid dichloride, diethyl phenyl phosphonate, diallyl chlorendate, reaction flame retardant polyol, di (isopropyl) N, N-bis (2-hydroxyethyl) aminomethyl -Phosphonate, dibutylbis (2-hydroxypropyl) pyrophosphate, diethylphenyl phosphonate and dimethylphenyl phosphonate. In addition, there are silicone resin, silicone oil, fluorine resin, fluorine-based oil, and the like.

  As typical flame retardant stabilizers, epoxy stabilizers (Products of Adeka Argus Chemical: Mark EP-13, EP-17, EP-22, Mark 273), flame retardant stabilizers of unknown composition (Products of Adeka Argus Chemical: Mark-ZS-66, ZS-506), ABS-PVC-based polymer blend stabilizers (Products of three-sharing machine synthesis: StanBM (N), -RC-200S), ABS, PS Type flame retardant added type stabilizer).

Flame retardant stabilizers include epoxy stabilizers such as Asahi Denka products, trade names, and grades; Adeka Sizer EP-13, Adeka Sizer EP-17, Adeka Sizer EP-22, composition unknown Examples of flame retardant stabilizers include Asahi Denka's products, trade names, and grades; Adeka Stub ZS-66, Adeka Stub ZS-506, ABS-PVC polymer blend stabilizers such as butyl Tin / malate series, octyl / tin / malate series, butyl / tin / sulfur-containing series, octyl / tin / sulfur-containing series, for example, three-share machine synthesis products, trade names and grades; Stan
BM (N), Stan OMF, Stan JF-9B, Stan JF-95B, Stan BK-1100L, Stan JF-95B, Stan BK-1100L, Stan
ONZ-20, Stan ONZ-22, Stan ONZ-22P, StanMMS, MC, and other flame retardant stabilizers include Kyowa Chemical's products, trade names, and grades; DHT-4A-2, and the like.

  The thermosetting resin and thermoplastic resin include glass fiber, glass bead, carbon fiber, ceramic fiber, metal fiber, mica, talc, calcium carbonate, aluminum silicate, kaolin, silica, calcium metasilicate, and bituminous fine powder. , Zeolite, diatomaceous earth, silica sand, pumice powder, slate powder, alumina, iron oxide, aluminum sulfate, barium sulfate, lithopone, calcium sulfate, magnesium oxide, molybdenum disulfide, rubber powder, ebonite powder, shellac, wood powder, coconut palm Shell powder, cork powder, cellulose powder, wood pulp, paper, cloth, mica powder, graphite, glass sphere (GB), volcanic glass hollow body, carbon hollow sphere, anthracite powder, artificial quartz stone, silicone resin fine powder, silica Fillers such as spherical fine particles, other plasticizers, anti-aging agents, UV absorbers, difficult Agents and the like may be added.

  The molding process of thermosetting resins is generally compression molding, transfer molding, injection molding, or injection compression molding. In the case of thermoplastic resins, injection molding is generally applied, Actual molding method (solid molding method), injection compression molding method, AGI, GPI, CGM of Asahi Kasei Kogyo Co., Ltd., GIM of Idemitsu Petrochemical Co., Ltd., PFP of Nippon Steel Chemical Co., Ltd., UK , US GAIN Technology Developed by gas assisted molding method (hollow injection molding method) represented by German air mold, contool, etc., and UCC method, USM method, or Toshiba Machine and Asahi Dow TAF method, EX-CELL-O method, Hettinger's foam molding, New-SF, GCP method, Allied Chemical's technique, etc. A foam molding method (foaming injection molding method) represented by MuCell (Mucelle) of Japan's Trexel and AMOTEC of Asahi Kasei Kogyo Co., Ltd., a method fused with the foam molding method and the gas assist molding method, ) It is also applied to a method in which the gas assist molding method and / or the foam molding method are combined with Sumitomo Chemical's SP mold and injection compression molding method. In some cases, vacuum forming, pressure forming, or catalyst (casting) is also possible.

  In producing foamable resins, foaming methods are broadly divided into physical methods and chemical methods. Examples of physical foaming methods include foaming by mechanical stirring or in molten resin. A method of injecting a volatile solvent into the gas and evaporating it by heating to cause foaming. On the other hand, examples of chemical foaming include a method of causing a chemical reaction and utilizing the generated gas. In general, a foaming agent is often used from the viewpoint of ease of handling.

  Foaming agents are classified into physical foaming agents and chemical foaming agents. Examples of the former physical foaming agents include the above-mentioned supercritical carbon dioxide gas, gaseous carbon dioxide gas, nitrogen gas, air, water vapor, and water. Inorganic liquids and gases typified by, halogenated hydrocarbons such as dichloroethane, methylene chloride, and flon gas, hydrocarbons such as pentane, hexane, heptane, cyclohexane, octane, gasoline, alcohols such as ethanol, ethanol, propanol, There are organic liquids and gases such as low-boiling solvents typified by ethers such as ethyl ether and methyl ethyl ether, or foamable capsules in which the low-boiling solvent is enclosed in a thermoplastic resin shell.

Examples of the latter chemical blowing agent include bicarbonates typified by sodium bicarbonate and ammonium bicarbonate, carbonates typified by ammonium carbonate and the like, nitrites typified by ammonium nitrite and the like, Ca (N ₃ ) Inorganic compounds such as azide compounds typified by _{2 and the} like, hydrogen compounds typified by sodium borohydride, etc., and combinations of light metals such as Mg and Al that react with water, acid and alkali to generate hydrogen gas It is a foaming agent.

  On the other hand, as foaming agents for organic compounds, azodicarbonamide, azobisisobutyronitrile, barium azodicarboxylate, dinitrosopentamethylenetetramine, P, P′-oxybis (benzenesulfonylhydrazide), paratoluenesulfonylhydra Zid, diazoaminobenzene, N, N′-dimethyl N, N′-dinitrosotephthalamide, nitrourea, acetone-P-toluenesulfonyl hydrazone, P-toluenesulfonyl azide, 2,4-toluenesulfonyl hydrazide, P-methylurethane Azolation such as benzenesulfonyl hydrazide, trinitrosomethylene triamine, P-toluenesulfonyl semicarbazide, oxalyl hydrazide, nitroguanidine, hydradicarbonamide, trihydrazinotriazine Things, hydrazine derivatives, semicarbazide compound, azide, nitroso compound, triazole compounds.

  In foam molding in injection molding, the foaming agent is foamed by pyrolysis or the like, so that the pressure of the molten resin is increased, and the foaming gas is dissolved under pressure in the molten resin. It is necessary to plasticize with high back pressure. In particular, when supercritical gas is dissolved, or when a supercritical state is created by pressure and temperature, the molten resin leaks from the nozzle at the tip of the molding machine heating cylinder. It is better to use.

  Shut-off nozzles include hydraulically operated shutoff nozzles, pneumatically operated shutoff nozzles, hydraulically operated rotary nozzles, pneumatically operated rotary nozzles, spring-operated shutoff nozzles, and hydraulically operated hot runner valves. A gate, a pneumatically operated hot runner valve gate, a spring type hot runner valve gate, etc. can be used.

  Examples of other monomers include α-β-insoluble monomers such as acrylic acid, methacrylic acid, maleic acid, itaconic acid, methyl acrylate, ethyl acrylate, methyl methacrylate, maleic anhydride, arylmaleimide, and alkylmaleimide. Saturated organic acids or derivatives thereof; vinyl esters such as vinyl acetate and vinyl butyrate; aromatic vinyl compounds such as styrene and methylstyrene; vinyl silanes such as vinyltrimethylmethoxysilane and γ-methacryloyloxypropyltrimethoxysilane; Small amounts of non-conjugated dienes such as 4-hexadiene, 4-methyl-1,4-hexadiene, 5-4-methyl-1,4-hexadiene, dicyclopentadiene, and ethylidene norbornene (4-ethylidene-2-nonbornene). You may let them.

  Further, in the examples, the thermoplastic elastomer employed for the annular elastic body is exemplified, but typical materials include rubber, plastic, urethane, silicone, and the like, such as normal silicone, water-absorbing flexible silicone, and quick-drying property. Some silicones, silicone elastomers, and fluorine elastomers may be used. A styrene thermoplastic elastomer, a polyolefin thermoplastic elastomer, or a polyurethane thermoplastic elastomer may be employed. More specifically, polyethylene, polypropylene, polyamide, polyacetal, polyethylene, polyurethane, polyurethane terephthalate, polyether block amide, EVA, thermoplastic elastomer such as SBS, nitrile rubber (NBR), hydrogenated nitrile rubber (HNBR) , Fluoro rubber (FKM, FFKM), acrylic rubber (ACM), silicone rubber (VMQ, FVMQ), urethane rubber (AU, EU), chloroprene rubber (CR), chlorosulfonated polyethylene (CSM), epichlorohydrin rubber (CO, ECO), natural rubber (NR), isoprene rubber (IR), styrene butadiene rubber (SBR), butadiene rubber (BR), polysulfide rubber (T), norbornene rubber (NOR), thermoplastic elastomer (TPE), and EPM And EPDM "Abbreviation of ethylene / propylene rubber", a group consisting of vulcanized elastomers such as nitrile. It may be employed thermoplastic elastomers selected.

  In the examples, the blade is exemplified by SUS (stainless steel) having a high anticorrosion effect, but as a metal material, low carbon steel, ceramics (zirconia, alumina, etc.), gold, platinum, copper, aluminum, silver, You may select from the group which consists of titanium, tungsten, chromium, or these alloys. Zirconia preferably contains a stabilizer such as yttria, calcia, magnesia, and ceria. It may be a cemented carbide or a high-hardness blade material such as powder high speed steel. A titanium brazing material, a nickel brazing material, a titanium brazing material in which ceramic particles are dispersed, a brazing material in which ceramic particles are dispersed, and martensitic stainless steel may be employed.

In addition, as the metal material, a precipitation hardening stainless steel metal powder and an organic binder made of plastic particles are kneaded (S1) to granulate the compound, and the metal powder is uniformly dispersed in the compound, The metal powder and the organic binder are preferably those that do not chemically react with each other. The chemical composition of the metal composing the metal powder is characterized by containing 0.15 wt% or less (preferably 0.07 wt% or less) of carbon and 2.00 to 5.00 wt% of copper. Also, at least one of niobium and tantalum is contained in an amount of 0.15 to 0.45 wt%, silicon is 1.00 wt% or less, manganese is 1.00 wt% or less, phosphorus is 0.04 wt% or less, and sulfur is 0.03 wt%. Hereinafter, precipitation hardened stainless steel containing 3.0 to 5.0 wt% nickel and 15.5 to 17.5 wt% chromium, and the remaining components are iron and inevitable impurities. For example, SUS630 or SUS631 (both JIS standard products) may be employed.

Further, as the metal material, a material composed of a high-hardness blade material such as martensitic stainless steel, cemented carbide, powder high speed steel, tool steel, high-speed steel, or a specific example of the blade material is chromium. And martensitic stainless steel represented by 18-8 stainless steel containing nickel, carbon tool steel containing about 0.6 to 1.5% carbon, manganese, nickel, chromium, molybdenum in the carbon tool steel Alloy tool steel and high-speed steel with addition of elements such as silicon, tungsten, vanadium, etc., cemented carbide with tungsten, cobalt, carbon, and titanium as required, WC-TiC-TaC (NbC)- Co based cemented carbide, powder high speed steel, etc., or those conventionally used as a material for scissors can be widely used.

Further, a nickel brazing material, a titanium brazing material, or a brazing material in which ceramic particles are dispersed in the brazing material portion 7 and the blade portion 8 is melted and diffused. Specific examples of the nickel brazing material include pure nickel, Ni-7Cr-3B-4Si-3Fe alloy, Ni-15Cr-3B alloy, Ni-25Cr alloy, Ni-0.5C-3Si-10Cr-2.5Fe-2B. -0.1Co alloy (trade name: Colmonoy No4), Ni-0.65C-12Cr-4.25Fe-4.0Si-2.5B alloy (Colmonoy No5), Ni-1.5C-27Cr-8W-1. 6Fe-1.55B-0.5Co alloy (Colmonoy No 84), 50Ni-32Mo-15Cr-3Si alloy, trade name: Trivalloy 700), or JIS standard Ni brazing, BNi-2, etc. can be used. However, it is not limited to these brazing materials. Specific examples of the titanium brazing material include Ti-48Zr-4Be, Ti-30V-4Be, Ti-33Cr, and Ti-13V-11Cr-3Al, but are not limited thereto. Absent. Further, ceramic particles may be dispersed in the brazing material having the above composition.

Examples of the ceramic particles used here include TiC, WC, B ₄ C, C-BN, TiN, Si ₃ N ₄ , sialon, and SiC. For example, whiskers may be mixed as the ceramic particles. When stainless steel is used as the material for forming the blade part 8, if an oxide film formed mainly of chromium contained in the stainless steel is present in the joint, bonding may be poor. It is necessary to break the main oxide film at the time of bonding or to suppress the formation of the oxide film. Therefore, it is not a problem to use a titanium brazing material containing titanium, copper, or zirconium known as a chromium gettering element, or a nickel brazing material.

  When used in medical grade, stainless steel 316LVM (ASTM 138F) having a low carbon content, nickel-titanium shape memory alloy, or cobalt-chromium alloy may be employed. Other stainless steels can be combined with one or more elements X. This stainless steel is composed of elements of austenitic stainless steel such as 200 series (eg, 201, 202) and 300 series (eg, 304L, 302, 308, 309, 310), ferritic stainless steel (eg, 18-2FM, 405). , 409, 429, 430, 442) and martensitic stainless steel (403, 410, 416, 420, 440C, 502, 503, 504, etc.).

  In addition, you may employ | adopt for a razor, a kitchen knife, a knife, a cutter knife, a knife etc. as a member provided with the blade body like the scissors of a present Example.

1, 2 ... Blade, 3 ... Support shaft, 4, 5 ... Frame, 6, 7 ... Finger ring, 8, 9 ... Frame,
DESCRIPTION OF SYMBOLS 10 ... 鋏, 11 ... Cyclic elastic body, 12 ... Groove, 13 ... Opening part, 14 ... Screw,
15 ... hollow part, 16 ... recessed part, 17 ... hollow elastic body,
30, 40 ... injection molding machine, 31, 41 ... fixed side mold, 32, 42 ... movable side mold,
33, 43 ... fixed side insert, 34, 44 ... movable side insert, 35, 45 ... sprue,
36, 46 ... runner, 37, 47 ... gate, 38, 48 ... cavity,
39, 49 ... Parting line (P / L)
58, 69 ... first cavity surface,

Claims (1)

Two blades supported rotatably about the intersecting intersection;
The groove opening is closed by fitting a protrusion formed on one surface of the opening of the groove and a recess formed on the other surface of the opening in the annular elastic body having a groove formed outside. A hollow elastic body made of a soft material having a hollow portion formed therein and a pair of other grooves formed on both side surfaces of the annular elastic body along the groove ;
It is fixed to each of the two blades, and a hard material is put into the pair of other grooves, and the closed opening of the hollow elastic body is integrated with the hard material so as to be integrated with the outside of the hollow elastic body. A frame made of the hard material formed in
A kite with