WO2004051685A1 - Clavier souple, procede de fabrication du clavier souple, et article de commutation - Google Patents

Clavier souple, procede de fabrication du clavier souple, et article de commutation Download PDF

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Publication number
WO2004051685A1
WO2004051685A1 PCT/JP2003/015226 JP0315226W WO2004051685A1 WO 2004051685 A1 WO2004051685 A1 WO 2004051685A1 JP 0315226 W JP0315226 W JP 0315226W WO 2004051685 A1 WO2004051685 A1 WO 2004051685A1
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WO
WIPO (PCT)
Prior art keywords
key
sheet
keys
sheet member
key sheet
Prior art date
Application number
PCT/JP2003/015226
Other languages
English (en)
Japanese (ja)
Inventor
Hiroyasu Shigeta
Tadahiro Murakami
Original Assignee
Nissha Printing Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nissha Printing Co., Ltd. filed Critical Nissha Printing Co., Ltd.
Publication of WO2004051685A1 publication Critical patent/WO2004051685A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/46—Knobs or handles, push-buttons, grips
    • B29L2031/466—Keypads, keytops
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/002—Actuators integral with membrane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/044—Injection moulding

Definitions

  • the present invention relates to a key sheet and a switch product used for manufacturing decorative articles such as communication devices such as mobile phones, automobile parts, and electric products.
  • decorative articles such as communication devices such as mobile phones, automobile parts, and electric products.
  • a gap 1 1 2 can be created between the adjacent keys 10 2 as shown in Figure 18 while keeping the size of the keys themselves. It tends to be as small as possible, and the allowable range of dimensional tolerances is reduced.
  • the gap 112 between the adjacent keys 102 is 0.15 to 0.25 mm, and the key 102 is used as the base sheet of the key sheet member 100.
  • This key sheet 110 is manufactured by the following method. First, a force tl decoration layer is formed on the key 102 that is still connected by the gate. After that, the gate is cut, and each of the separated keys 102 is set in a recess 125 a of a predetermined bonding jig 125 as shown in FIG. Next, these keys 102 set in the bonding jig 125 and the sheet member 100 composed of the base sheet 101 are superimposed and bonded, and the bonding jig is formed. From the 125 force, the key 102 and the sheet member 100 adhered to each other are taken out to obtain a key sheet 110.
  • the gap 110 between the adjacent keys 102 (see FIG. 18) is very small, for example, about 0.2 mm. It was not possible to provide a cross between the adjacent keys 102 and 102 to prevent the keys from falling off in the housing for storing the key 2. Therefore, if the adhesive strength between the key 102 and the sheet member 100 decreases, There was a problem that the key 102 was immediately dropped from the key sheet 110.
  • the bonding jig 125 must always have a certain amount of play (that is, make the dimensions of the bonding jig 125 larger than the actual dimensions of the key 102) 1 26 (see Fig. 19). Is required.
  • the play 1 2 6 is the tolerance of the gap 1 1 2 between the adjacent keys 10 2 as it is, the smaller the gap 1 1 2 between the adjacent keys 10 2, the smaller this tolerance The problem is that the impact is greater and defective products are more likely to occur.
  • an object of the present invention is to solve the above-mentioned problem, and even if the number of keys is increased due to the multifunctionality, the work of setting the keys on the jig becomes unnecessary, and An object of the present invention is to provide a key sheet and a method of manufacturing the key sheet which can prevent the key from falling off without insufficient adhesive strength to a sheet member, and a switch product using the key sheet. Disclosure of the invention
  • the present invention is configured as follows to achieve the above object.
  • a key sheet in which a plurality of keys are arranged close to each other, wherein a key leg of each key of the plurality of keys is fitted into a through hole of a sheet member, and Provided is a key sheet, wherein a width of a key head is larger than a width of the through hole of the sheet member, and the key sheet is arranged on a surface of the sheet member.
  • the key sheet according to the first aspect wherein a gap between adjacent keys of the plurality of keys is 0.15 to 0.25 mm.
  • a vertical cross section of the through-hole has a trapezoidal shape extending toward a side opposite to a side where the head of the key is located.
  • the key sheet is constituted by the key sheet according to the first or second aspect in which at least three or more keys are arranged vertically and horizontally, and a housing for holding the key sheet.
  • a switch product such as a mobile phone, in which the adjacent keys are arranged only through a space between adjacent keys of the key sheet.
  • a switch product comprising the key sheet according to claim 3, wherein at least three or more keys are arranged vertically and horizontally, and a housing for holding the key sheet.
  • a switch product such as a mobile phone in which the adjacent keys are arranged only via a space between the adjacent keys of the key sheet.
  • the sheet material is passed through the through hole of the sheet member from the key material injection port, and the concave portion is formed.
  • a key sheet manufacturing method for obtaining the key sheet according to the first or second aspect by filling a key material into a space formed by the sheet member.
  • the H0 portion and the H0 portion are passed through the through hole of the sheet member from the key material injection port.
  • a key sheet manufacturing method for obtaining the key sheet according to the third aspect by filling a key material into a space formed by the sheet member.
  • FIG. 1 is a cross-sectional view showing a key sheet according to an embodiment of the present invention
  • FIG. 2 is a sectional view showing a key sheet according to a modification of the embodiment of the present invention
  • FIG. 3 is a sectional view showing a key sheet according to another modification of the embodiment of the present invention
  • FIG. 9 is a sectional view showing a key sheet according to still another modification of the embodiment of the present invention
  • FIG. 5 is a perspective view showing a sheet member of the key sheet according to the embodiment of the present invention.
  • FIG. 6 is a cross-sectional view showing a modification of the sheet member of the key sheet according to the embodiment of the present invention.
  • FIG. 7 is a cross-sectional view showing another modification of the sheet member of the key sheet according to the embodiment of the present invention.
  • FIG. 8 is a cross-sectional view illustrating a use mode of the key sheet according to the embodiment of the present invention.
  • FIG. 9 is a cross-sectional view illustrating a use mode of the key sheet according to the embodiment of the present invention. It is a cross-sectional view showing a key sheet according to still another modification of the embodiment of the present invention,
  • FIG. 11 is a cross-sectional view illustrating one step of a method for manufacturing a key sheet according to the embodiment of the present invention.
  • FIG. 12 is a cross-sectional view showing one step of the method for manufacturing a key sheet according to the embodiment of the present invention.
  • FIG. 13 is a cross-sectional view showing one step of the method for manufacturing a key sheet according to the embodiment of the present invention.
  • FIG. 14 is a cross-sectional view showing one step of the method for manufacturing a key sheet according to the embodiment of the present invention.
  • FIG. 15 is a cross-sectional view showing one step of the method for manufacturing a key sheet according to the embodiment of the present invention.
  • FIG. 16 is a cross-sectional view showing one step of the method for manufacturing a key sheet according to the embodiment of the present invention.
  • FIG. 17 is a front view showing a switch product according to the embodiment of the present invention
  • FIG. 18 is a cross-sectional view showing a key sheet according to the related art.
  • FIG. 19 is a cross-sectional view showing one step of a method for manufacturing a key sheet according to the related art.
  • the key sheet A has a keying key 2 having a key leg 21 and a shape corresponding to the key leg 21 having a hexagonal or circular cross section along a direction perpendicular to the axis. (A cross section along the direction perpendicular to the axis is hexagonal or circular, etc.) And a sheet member B.
  • the key sheet A is composed of a plurality of keying keys 2 arranged close to each other, and a sheet member B having a plurality of through holes 4 into which the plurality of keying keys 2 can be fitted. Have been.
  • the key 2 is fitted into a through hole 4 provided in the base sheet 1 of the sheet member B, and is integrally formed with a key leg 21 having substantially the same length as the thickness of the base sheet 1 and a key leg 21.
  • Pedestal part 23 which is connected to the base sheet 1 and is connected to the base sheet 1, and a key head 22 which is integrally connected to the pedestal part 23.
  • the key leg part 21 and the pedestal part 23 are formed.
  • the vertical cross section has a substantially T-shape as shown in FIG.
  • the sheet member B includes a base sheet 1 having a through-hole 4 formed therein, and a rectangular adhesive sheet or coating disposed on the surface of the base sheet 1 and around the through-hole 4. It is composed of an adhesive layer 3 composed of a film and the like.
  • the adhesive layer 3 may not be provided as shown in FIGS.
  • the shape of the through hole 4 is such that the vertical cross section as shown in FIGS. 1 and 3 is longer than the rectangular through hole 4 as shown in FIGS. 2 and 4 from the front side to the back side of the base sheet 1.
  • a trapezoidal through hole 4 A that spreads out toward the side is more preferable.
  • the trapezoidal through-hole 4 here is not limited to an axially symmetric inner surface of the through-hole 4A (for example, as shown in FIG. 6, Side, and the other side has a trapezoidal through hole 4B shaped to be the inner surface along the thickness direction, and as shown in FIG. 7, in the longitudinal section, only the surface side of the base sheet 1 is axially symmetric. Included is a trapezoidal through hole 4C having an inclined shape, or a plurality of through holes formed for one key 2.
  • the material of the base sheet 1 is polycarbonate, polyamide, polyimide, There is a single-layer film selected from polyester, acrylic, olefin, urethane, acrylonitrile butadiene styrene resin, etc., or a laminated film or copolymer film of two or more resins selected from the above.
  • the thickness of the base sheet 1 is preferably 5 to 500 ⁇ m.
  • the thickness of the base sheet 1 is preferably 5 to 500 ⁇ m.
  • the rigidity of the sheet 1 This is because a problem occurs in the key slidability as a single sheet member.
  • An easy adhesion layer may be formed on the base sheet 1 so that the adhesion layer 3 is firmly adhered.
  • the material of the easy-adhesion layer include a polyester resin, an acrylic resin, an olefin resin, and a urethane resin.
  • any of general-purpose printing methods such as Daravia printing, screen printing, or offset printing, and various coating methods may be used.
  • the adhesive layer 3 is located between the lower surface of the pedestal portion 23 of the key head 22 and the upper surface of the sheet member B, and has a function of joining them.
  • the material of the adhesive layer 3 include acrylic resin, nitrified cotton resin, polyurethane resin, chlorinated rubber resin, vinyl chloride vinyl acetate copolymer resin, polyamide resin, polyester resin, epoxy resin, It is preferable to use a polycarbonate resin, an olefin resin, an acrylonitrile butadiene styrene resin, or the like.
  • the thickness of the adhesive layer 3 is preferably 0.5 to 50 ⁇ m. If the thickness of the adhesive layer 3 is less than 0.5 ⁇ m, there is a problem that sufficient adhesiveness cannot be obtained.
  • the method for forming the adhesive layer 3 may be a general-purpose printing method such as gravure printing, offset printing, or screen printing, or any method such as painting, divebing, or a reverse coater.
  • the material of the key 2 is not particularly limited, but a transparent molding resin is preferable.
  • a polycarbonate resin excellent in transparency, heat resistance, and impact resistance is particularly suitable.
  • an acrylic resin having excellent transparency and surface strength may be used because the gate is not required to be cut.
  • the method of forming the key 2 may be any method such as injection molding, compression molding, or casting. Gate power The need for a cut is unnecessary because injection molding with a pin gate through the through-hole eliminates the need to make the gate traces flush with each other and make it easy to laminate and adhere the base sheets unlike the conventional method.
  • a decorative layer such as a character, a geometric pattern, or a solid is formed on the surface of the key head 22 (the upper surface in FIG. 1).
  • a key light-transmitting layer 9 and a key light-shielding layer 10 may be provided.
  • a sheet member light-shielding layer 11 may be provided on the base sheet 1 (see FIG. 10). Note that a plurality of keys 2 may be formed in parallel.
  • the key light-transmitting layer 9 weighs 3 weight based on a transparent resin such as atalyl, olefin, urethane, polyester, vinyl chloride, or rubber chloride. /.
  • An ink containing less than a pigment or dye can be constituted by a resin layer formed by general-purpose printing, coating, or painting.
  • Key light shielding layer 1 0 can acrylic, Orefin, urethane, polyester, vinyl chloride, or printing 5 weight 0/0 or more pigments or ink moistened dye to the resin, such as chlorinated rubber of universal, coating, or It can be composed of a resin layer formed by a method such as painting.
  • the sheet member light-shielding layer 11 is a general-purpose printing method using an ink containing 5% by weight or more of a pigment or dye with respect to a resin such as acrylic, olefin, urethane, polyester, vinyl chloride, or rubber. It can be composed of a resin layer formed by a method such as coating or painting.
  • the key sheet A may be curved to decorate the side of the key 2 (Fig. 11).
  • the reason why the coating can be performed by curving in this manner is that the key 2 of the key sheet A and the sheet member B are firmly joined.
  • the method of forming the through holes 4 in the base sheet 1 includes a die pressing method, a Thompson die, and a punching method.
  • the angle of the punching blade 7 is inclined inward as shown in Fig. 12, and the base sheet 1 is placed on the punching blade 7 so that the adhesive layer 3 is located on the pressing plate 8 side.
  • through holes 4A having different sizes on the front and back of the base sheet 1 can be formed as shown in FIG. That is, the key head 22 is positioned on the inner surface of the through hole 4A. It can be a tapered surface having a trapezoidal shape that spreads out toward the side opposite to the side on which it is placed.
  • the size (width or inner diameter) of the through hole 4 is preferably 0.5 mm to 2 O mm. If the size of the through hole 4 is less than 0.5 mm, a problem arises in that the effect of joining by physical engagement cannot be secured. If the size of the through hole 4 exceeds 2 Omm, in other words, if the size (width or inner diameter) of the key leg exceeds 2 Omm, the key becomes large and the number of keys increases. Must be reduced, and multi-functionality cannot be achieved.
  • the key light-transmitting layer 9, key light-shielding layer 10, and sheet member light-shielding layer 11 are made of acrylic resin, nitrified cotton resin, polyurethane resin, chlorinated rubber resin, and vinyl chloride-vinyl acetate copolymer. Examples thereof include, but are not particularly limited to, a base resin, a polyamide resin, a polyester resin, and an epoxy resin.
  • the key translucent layer 9, the key light shielding layer 10 and / or the sheet member light shielding layer 11 are respectively provided with aluminum, chromium, copper, nickel, indium, tin, and the like by a method such as vacuum evaporation.
  • a metal film layer of silicon oxide or the like may be provided. In this case, the metal film layer may be in the entire surface or in a pattern.
  • the thickness of the key translucent layer 9 is 0.5 n! ⁇ 50 ⁇ m is preferred. If the thickness of the key light-transmitting layer 9 is less than 0.5 ⁇ , there is a problem that sufficient design cannot be obtained. If the thickness of the key light-transmitting layer 9 is larger than 50 / xm, after printing, It is difficult to dry! /.
  • the thickness of the key light-shielding layer 10 and the sheet member light-shielding layer 11 is required to be concealed. It is preferable that the thickness is set to be about 50 / xm, which is thicker than the key translucent layer 9.
  • the thickness of the key light transmitting layer 9, the key light shielding layer 10, and / or the metal film layer formed on the sheet member light shielding layer 11 be 50 A to 120 OA. If the thickness of the metal film layer is smaller than 50 A, there is a problem that a sufficient metallic luster cannot be obtained, and if the thickness of the metal film layer is larger than 120 OA, cracks are likely to occur. That's why.
  • the method for providing the key light-transmitting layer 9, the key light-shielding layer 10 and Z, or the sheet member light-shielding layer 11 on the entire surface or in a pattern is a general-purpose printing method such as gravure printing, screen printing, or offset printing.
  • Tambo printing painting, various coating methods, vapor deposition, ion plating, or metal film forming methods such as sputtering.
  • a method of providing a pattern there is a method of forming a whole surface and then removing a part by a laser marking method.
  • the outer shape of the key light-shielding layer 10 be a concealable pattern that conforms to the outer shape of the key 2, and that only the character portion be removed. It is advisable to add a coloring agent such as red iron oxide, titanium oxide, calcium carbonate, or carbon black in order to obtain concealment.
  • the adhesive layer 3 may be used without providing the key light-transmitting layer 9 and the key light-shielding layer 10.
  • the adhesive layer 3 may not be provided, and only the key light transmitting layer 9 and the key light shielding layer 10 may be used.
  • the method for manufacturing the key sheet A is as follows. First, as shown in FIG. 13, a sheet member B composed of a base sheet 1 and an adhesive layer 3 is converted into a core having a gate portion 6 corresponding to a key material injection port. Cavity for forming molding die 5A and key-shaped cavity 5C Between molding die 5B, key-shaped cavity 5C, through hole 4 or 4A of base sheet 1, and each key 2 Are arranged so that the center of each position with the gate part 6 of the two coincides. Thereafter, as shown in FIG. 14, the molding die 5A and the molding die 5B are clamped, and then, as shown in FIG. 15, the gate portion 6 is moved to the key-shaped cavity 5C.
  • the resin 13 for key molding is melt-injected and filled into each cavity 5C.
  • the mold 7 is solidified and the mold 5A and the mold 5B are opened as shown in FIG.
  • a key sheet A force in which the key 2 is integrated with the through hole 4 or 4 A of the sheet member B and the adhesive layer 3 is obtained.
  • Fig. 17 shows that at least three or more keys 2 are arranged vertically and horizontally to make each key 2 of the above key sheet A function as a key of a mobile phone.
  • This shows a state in which the key sheet A is held by the housing 40 of the mobile phone.
  • the gap in the space 90 between the adjacent keys 2 is, for example, 0.15 to 0.25 mm. Since there is no cross-section of the cell phone housing 40, the switch product using the key sheet A is very small and lightweight.
  • a 75 ⁇ polyethylene terephthalate film with a thickness of 75 ⁇ was used as the base sheet 1, and the film was then coated with “SG41OZ-dedicated curing agent” (urethane two-liquid curing type ink) manufactured by Seikoadvans Co., Ltd.
  • a 3 ⁇ m sheet member light-shielding layer 11 was patterned by screen printing.
  • an adhesive layer 3 made of a polycarbonate-based resin was formed in a pattern with a film thickness of 2 ⁇ on a portion to be joined to the key 2 on the opposite surface to obtain a sheet member B.
  • the through hole 4 of the obtained sheet member B had a circular surface having a diameter of 2 mm on the surface on which the adhesive layer 3 was formed and a diameter of 2.2 mm on the opposite surface.
  • the sheet member B obtained above was combined with a core mold 5A having a gate portion 6 corresponding to a key material injection port, and a cavity component for forming a key-shaped cavity 5C. Between the molds 5B, the centers of the key-shaped cavities 5C, the through holes 4A, and the gates 6 of the respective keys 2 are arranged so as to coincide with each other. After mold clamping, Bayer Corporation polycarbonate resin ⁇ Macrolon 2205 '' was melt-injected from the gate section 6 to the key-shaped cavity 5C as molding date 13 and cooled and solidified. Thereafter, when the mold was opened, a key sheet A in which the key 2 was integrated with the through hole 4A of the sheet member B and the adhesive layer 3 was obtained.
  • a key translucent layer 9 made of a white etalinole resin having a thickness of 1 inch is formed on the top surface of the key 2 of the key sheet A by tambo printing, and then a silver metallic urethane type is formed on the entire surface of the key 2.
  • a key light-shielding layer 10 made of a resin paint was formed to a thickness of 30 ⁇ m. After that, a part of the key light-shielding layer 10 was removed with a YAG laser so that the key light-transmitting layer 9 was exposed, and a part of the silver metallic key was formed with a light-transmitting white pattern force. Sheet A was obtained. The key sheet A obtained was such that the key 2 did not fall off unless the sheet member B was torn (the sheet member was torn and cut or shattered at a certain location).
  • a 100 x 100 m thick polyethylene terephthalate film is used as the base sheet 1, and a 3 m-thick adhesive layer 3 made of vinyl chloride vinyl acetate copolymer resin is patterned on the part to be joined to the key 2 on it.
  • a sheet member B was obtained.
  • the sheet member B is placed on the side opposite to the adhesive layer 3 on the die press blade so that the vicinity of the center of the adhesive layer 3 of the sheet member B matches the position of the hexagonal die press blade, The die press was operated to form a hexagonal through hole 4 in the sheet member B.
  • the sheet member B obtained above was divided into a core molding die 5A having a gate portion 6 corresponding to a key material injection port, and a cavity molding die 5B forming a key-shaped cavity 5C.
  • the key-shaped cavities 5C, the through-holes 4A, and the gates 6 of the keys were arranged so that the centers of the respective positions coincided with each other.
  • the key sheet A was obtained in which the key 2 was integrated with the through hole 4A of the sheet member B and the adhesive layer 3.
  • a key translucent layer 9 made of a yellow acryl-based resin having a thickness of 1.5 / im is formed by transfer printing on the top surface of the key 2, and then a black polyurethane is formed on the entire surface of the key 2.
  • a key light-shielding layer 10 made of a base resin paint was formed by coating with a film thickness of 20 / zm. After that, a part of the key light-shielding layer 10 was removed with a YAG laser so that the key light-transmitting layer 9 was exposed, and a translucent yellow pattern was decoratively formed on a part of the black key. Key sheet A is obtained. In the obtained key sheet A, the key 2 did not fall out unless the sheet member B was broken.
  • the key sheet A according to the above embodiment of the present invention is a key sheet A in which a plurality of keys 2 are arranged in close proximity, as shown in FIG. 21, 21 A are fitted into through holes 4, 4 A of the base sheet 1 of the sheet member B, and the key head 22 and the pedestal portion 23 are arranged on the surface of the sheet member B. Therefore, since the key leg 21 has a force S and is fitted into the through holes 4 and 4 A of the base sheet 1, the adhesive layer 3 of the key pedestal 23 and the sheet member B is chemically bonded with an adhesive. In addition to the secure joining, the physical joining of the key 2 and the sheet member B can be ensured, so that there is no defect such as the key 2 being detached from the sheet member B and falling off.
  • the key sheet A according to the above embodiment of the present invention is characterized in that the gap between the adjacent keys 2 is 0.15 to 0.25 mm. Therefore, since the key legs 21 and 21 A are fitted into the through holes 4 and 4 A of the base sheet 1, physical bonding by engaging the key 2 with the sheet member B is also ensured. Since the key 2 can be removed from the sheet member B, there is an effect that a trouble such as dropping out does not occur.
  • the key sheet A according to the embodiment of the present invention is a key sheet A in which the vertical cross section of the through hole 4A has a trapezoidal shape. Therefore, even if the key 2 and the sheet member B are made of a combination of materials that are not joined at all, there is an effect that the key 2 does not fall off the sheet member B unless the sheet member B is ruptured.
  • the switch product according to the embodiment of the present invention includes a key sheet A in which at least three or more keys 2 are arranged vertically and horizontally and a housing 4 for holding the key sheet A. And key 2 adjacent to key sheet A above There is no cross-section of the housing 40 between the key 2 and the adjacent key 2 and the key 2 are arranged via a space 90. Therefore, there is an effect that very small size and light weight can be achieved.
  • the method of manufacturing the key sheet A includes the steps of: setting the sheet member B on the cavity molding die 5 B having the concave portion 5 formed therein;
  • the key material 13 is obtained by filling the space formed by the recess 5C and the sheet member B with the key material 13 from the portion 6 through the through holes 4, 4A of the sheet member B.
  • a large number of keys 2 are formed at the same time as molding.Therefore, there is no need to set the key 2 on the bonding jig, and there is an effect that the operation is not troublesome even if the number of keys 2 is large. .
  • the dimensional tolerance of the gap between the adjacent keys 2 can be made extremely small, there is an effect that occurrence of defective products can be reduced.
  • the thickness of the base sheet 1 and the length of the key leg 21 are substantially the same, so that the key leg 21 does not protrude from the base sheet 1. . If the length of the key leg is shorter, the switch input becomes more difficult and the key is more likely to fall off.On the other hand, if the length of the key leg is longer, the key Extra space is required under the seat, making it difficult to reduce the size. On the other hand, if the thickness of the base sheet 1 and the length of the key leg 21 are substantially the same as in the above-described embodiment, the switch input is cheerful, the keys are hardly dropped, and space is saved. And is most preferable.

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  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Push-Button Switches (AREA)

Abstract

La présente invention a trait à un clavier souple, dans lequel des portions de base de touches (21, 21A) sont adaptées dans des trous traversants d'un organe souple et des portions de tête de touches sont formées à la surface de l'organe souple, grâce à quoi les touches sont structurées de manière à s'adapter dans les trous traversants du clavier souple, la liaison physique des touches par engagement peut également être assurée pour empêcher la chute des touches de l'organe souple.
PCT/JP2003/015226 2002-12-02 2003-11-28 Clavier souple, procede de fabrication du clavier souple, et article de commutation WO2004051685A1 (fr)

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Application Number Priority Date Filing Date Title
JP2002-350041 2002-12-02
JP2002350041 2002-12-02

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WO2004051685A1 true WO2004051685A1 (fr) 2004-06-17

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Publication number Priority date Publication date Assignee Title
CN108723191B (zh) * 2017-04-17 2023-10-24 麦格纳技术与模具系统（天津）有限公司 一种翻边模具中的破裂键

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JPS56128523A (en) * 1980-03-11 1981-10-08 Matsushita Electric Ind Co Ltd Method of producing keyboard switch
JPH0629860Y2 (ja) * 1988-07-21 1994-08-10 株式会社東芝 キースイッチ構造
JPH11250754A (ja) * 1997-12-24 1999-09-17 Phoenix Korea Co Ltd ボタン集合体
JP2002039702A (ja) * 2000-07-25 2002-02-06 Yamayo Sokuteiki Kk 巻尺ケース

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56116225A (en) * 1980-02-19 1981-09-11 Tamura Electric Works Ltd Pushhbutton member
JPS56128523A (en) * 1980-03-11 1981-10-08 Matsushita Electric Ind Co Ltd Method of producing keyboard switch
JPH0629860Y2 (ja) * 1988-07-21 1994-08-10 株式会社東芝 キースイッチ構造
JPH11250754A (ja) * 1997-12-24 1999-09-17 Phoenix Korea Co Ltd ボタン集合体
JP2002039702A (ja) * 2000-07-25 2002-02-06 Yamayo Sokuteiki Kk 巻尺ケース

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