WO2007123251A1 - 押釦スイッチ用キートップを製造する方法 - Google Patents
押釦スイッチ用キートップを製造する方法 Download PDFInfo
- Publication number
- WO2007123251A1 WO2007123251A1 PCT/JP2007/058905 JP2007058905W WO2007123251A1 WO 2007123251 A1 WO2007123251 A1 WO 2007123251A1 JP 2007058905 W JP2007058905 W JP 2007058905W WO 2007123251 A1 WO2007123251 A1 WO 2007123251A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- key top
- resin member
- sheet
- mold
- push button
- Prior art date
Links
Classifications
-
- 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
- H01H13/88—Processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D19/00—Producing buttons or semi-finished parts of buttons
-
- 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
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/253—Preform
- B29K2105/256—Sheets, plates, blanks or films
-
- 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
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
-
- 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
- H01H2221/00—Actuators
- H01H2221/002—Actuators integral with membrane
- H01H2221/004—U-shaped openings surrounding keys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2229/00—Manufacturing
- H01H2229/008—Die stamping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2229/00—Manufacturing
- H01H2229/044—Injection moulding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2229/00—Manufacturing
- H01H2229/05—Forming; Half-punching
Definitions
- the present invention relates to a method for manufacturing a key top for a push button switch such as a mobile phone, a personal digital assistant (PDA), and a remote controller.
- the present invention relates to a manufacturing method capable of continuously manufacturing a thin key top for a push button switch made of a synthetic resin.
- a key sheet including a key top that serves as a pressing portion and a key base that is formed of an elastic body such as silicone rubber has been provided. It is assembled to an internal circuit board of a mobile phone or the like, and the circuit is opened and closed by pressing a key top, so that a switch function is achieved.
- PDA personal digital assistant
- a key sheet including a key top for a push button switch it is common to perform integral molding by injection molding with high shape accuracy, dimensional accuracy, and mold surface transfer accuracy.
- a resin film on which a predetermined design is printed and a synthetic resin melted are integrally formed by injection molding, and the push button is pressed.
- a method of manufacturing a key sheet including a thin key top for a switch has been proposed (see Patent Document 1).
- Patent Document 1 JP 2002-197932 A
- the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method for manufacturing a thin key top for a push button switch that is stable and low in cost and improves the yield. There is. Another object of the present invention is to provide a method for manufacturing a thin key top for a push button switch that does not require fine adjustment in the molding process and is simple and can be continuously manufactured. Furthermore, an object of the present invention is to provide a method for manufacturing a thin key top for a push button switch, which can make a design change while minimizing the cost associated with the design change.
- a resin member heated to a predetermined temperature is used as a first molding die and a second molding die.
- a resin member heated to a predetermined temperature is used as a first molding die and a second molding die.
- a predetermined distance is defined between the first surface of the key top having a shape facing the first mold and the second surface facing the second mold.
- the resin member heated to the first temperature has a three-dimensional shape formed on the first mold and / or the second mold and the resin.
- the three-dimensional key top has a first surface facing the first mold and a second surface facing the second mold;
- a predetermined gap is provided between the first surface and the second surface of the key top.
- FIG. 1A is a conceptual diagram of a process of heating a resin member 100 with heating elements 110 and 112.
- FIG. 1B is a plan view of the resin member 100 heated in the heating step.
- FIG. 2A is a conceptual diagram of a process of embossing a sheet-like resin member 102 including a three-dimensional key top 120 using molding dies 130 and 140.
- FIG. 2B is a plan view of a sheet-like resin member 102 including a three-dimensional key top 120 embossed in a molding step.
- FIG. 3A is a diagram showing a sheet-like resin member 102 including a key top 120 in which a slit 150 is formed along the periphery of the key top 120 in a slit forming step.
- FIG. 3B is a plan view of the sheet-like resin member 102 including the three-dimensional key top 120 in which the slit 150 is formed in the slit forming step.
- FIG. 4A is a diagram showing the key top 120 cut off from the sheet-like resin member 102 including the key top 120 in the cutting step.
- FIG. 4B is a plan view of the key top 120 cut off in the cutting step.
- FIG. 5A is a plan view of a key top 120 for a push button switch manufactured by the manufacturing method according to the first embodiment of the present invention.
- FIG. 5B is a front view of the key top 120 for push button switch manufactured by the manufacturing method according to the first embodiment of the present invention.
- FIG. 6A is a plan view of a resin member 202 including a key top 220 for another pushbutton switch manufactured by the manufacturing method according to the first embodiment of the present invention.
- FIG. 6B is for another pushbutton switch manufactured by the manufacturing method according to the first embodiment of the present invention.
- 5 is a front view of a resin member 202 including a key top 220.
- FIG. 7A is a plan view of a resin member 302 including a key top 320 for a push button switch manufactured by the manufacturing method according to the second embodiment of the present invention.
- FIG. 7B is a front view of a resin member 302 including a key top 320 for a push button switch manufactured by the manufacturing method according to the second embodiment of the present invention.
- a method for manufacturing a key top for a pushbutton switch comprises: a step of heating a resin member to a first temperature by a heating body; and a step of first heating the resin member heated to the first temperature.
- a forming die and a second forming die a three-dimensional shape formed in the first forming die and / or the second forming die is embossed on the resin member to form a sheet shape including a three-dimensional key top
- a sheet-shaped resin member including the step of forming a slit at least partially along the periphery of the three-dimensional key top, and the integrally formed key top having the formed slit.
- Process to decorate The three-dimensional key top has a first surface facing the first mold and a second surface facing the second mold, and the first surface and the first surface of the key top. There is a predetermined distance between the two surfaces.
- the resin member heated to the first temperature is formed into the first molding die and the Z or second molding die using the first molding die and the second molding die.
- the step of cooling the sheet-shaped resin member including the integrally formed key top to a predetermined second temperature, and the sheet-shaped resin member including the key top cooled to the second temperature Forming a slit at least in part along the periphery of the key top of the shape;
- a slit can be formed along the periphery. Therefore, the slit can be formed along the periphery of the three-dimensional key top while preventing the key top from being detached from the sheet-like resin member.
- the sheet-like resin member including the key top can be integrally decorated, and the key top can be easily separated after the decoration.
- the sheet including the decorated key top can efficiently decorate the side of the key top as long as the key top can be easily separated from the sheet-like resin member. Even when slits are not formed to the maximum along the periphery of the key top, for example, a connecting portion that connects the key top and the resin member to one of the four sides along the periphery of the key top is provided. When the slit is formed along the three sides around the key top other than the connecting part, after decorating the resin member including the key top, the key top is not separated from the key top and the sheet-like resin member.
- the resin member including the key top can be easily and continuously formed as a key sheet including a key top whose key portion can swing with respect to the sheet-like resin member. This process can be manufactured continuously and stably.
- the resin member is heated, embossed using the first mold and the second mold, and integrally molded into a sheet-like resin member including a three-dimensional key top, cooled, and the key top
- a sheet-like resin member including a thin key top for a pushbutton switch having the desired shape accuracy and dimensional accuracy can be easily adjusted without requiring fine adjustment.
- a series of steps can be performed continuously. As a result, it is possible to stably manufacture a sheet-like resin member including a thin key top for a push button switch, improve the yield, enable mass production, and manufacture at a low cost.
- the “resin of the resin member” a known synthetic resin that is not particularly limited is preferably used. More specifically, known synthetic resins such as polycarbonate resins, acrylic resins, styrene resins, olefin resins and modified resins thereof may be mentioned. In addition, a resin having translucency as a key top is preferred. Specifically, polypropylene resin, polymethyl methacrylate resin, polyethylene terephthalate resin, polybutylene terephthalate resin, polystyrene resin, polycarbonate resin, polyamide resin, polyacrylonitrile Examples thereof include butadiene monostyrene resin, and polycarbonate resin is particularly preferably used.
- the method for producing a key top for a pushbutton switch according to the present invention further includes a step of separating the three-dimensional key top from the decorated sheet-like resin member.
- the slits are formed to the maximum along the periphery of the key top, whereby the decorated key top can be easily separated from the sheet-like resin member force.
- a sheet-like resin member including a thin key top for a push button switch that is molded without generating a weld or the like peculiar to injection molding is used as a key press including the key top.
- a series of steps can be easily and stably produced in a simple manner.
- the first mold and the second mold are heating bodies.
- the first molding die and the second molding die are heating bodies, a sheet-like resin including a three-dimensional key top is heated while pressing the resin member. Since it is possible to integrally mold the member and then decorate it, a series of steps up to the heating power decoration can be performed continuously. As a result, the work between the processes is simplified, the apparatus can be downsized, and the sheet-shaped resin member including the key top for the push button switch that has been reduced in thickness can be stably manufactured. This also improves mass production and enables production at low cost.
- the resin member is heated, embossed using the first mold and the second mold, integrally molded into a sheet-shaped resin member including a three-dimensional key top, and decorated.
- a sheet-like resin member including a thin key top for a push button switch having desired shape accuracy and dimensional accuracy can be continuously and easily performed without requiring fine adjustment.
- a manufacturing method for manufacturing a key top for a pushbutton switch according to the first embodiment of the present invention will be described with reference to FIGS.
- the manufacturing method for manufacturing the key top for a pushbutton switch according to the first embodiment of the present invention heats the sheet-like resin member 100 without using the injection molding method. After that, the thin key top for the push button switch is manufactured by embossing and integrally forming the sheet-like resin member 102 including the three-dimensional key top 120.
- FIG. 1 is a conceptual diagram for explaining a process of heating the resin member 100
- FIG. 1A is a conceptual diagram of a process of heating the resin member 100 by the heating elements 110 and 112
- FIG. 1B is a main process.
- FIG. 3 is a plan view of a resin member 100 heated in the process.
- FIG. 2 is a conceptual diagram for explaining a process of embossing a resin member.
- FIG. 2A is a process of embossing a sheet-like resin member 102 including a three-dimensional key top 120 using molding dies 130 and 140.
- FIG. 2B is a plan view of the sheet-like resin member 102 including the three-dimensional key top 120 embossed in this step.
- FIG. 1 is a conceptual diagram for explaining a process of heating the resin member 100
- FIG. 1A is a conceptual diagram of a process of heating the resin member 100 by the heating elements 110 and 112
- FIG. 1B is a main process.
- FIG. 3 is a
- FIG. 3 is a conceptual diagram for explaining a process of forming the slit 150 along the periphery of the embossed three-dimensional key top 120
- FIG. 3A is a three-dimensional key top by a slit forming means (not shown).
- FIG. 3B is a diagram showing a sheet-like resin member 102 including a key top 120 in which slits 150 are formed along the periphery of 120
- FIG. 3B includes a three-dimensional key top 120 in which slits 150 are formed in this step.
- 3 is a plan view of a sheet-like resin member 102.
- FIG. FIG. 4 is a conceptual diagram for explaining a process of separating the key top 120 from the sheet-shaped resin member 102 including the key top 120.
- FIG. 4A is a sheet-shaped resin member 102 including the key top 120 in this process.
- FIG. 4B is a plan view of the key top 120 cut off in this process.
- a resin member 100 is prepared, sandwiched between heating elements 110 and 112, and heated until the resin member 100 is in a soft state.
- the resin member 100 is a rectangular member having a width of 100 mm to 150 mm and a thickness of 1 mm, and the material is heat resistant and cold resistant with a very high impact strength. It is preferable to use a polycarbonate resin that is excellent in stability and dimensional stability.
- the resin member 100 in order to soften the resin member 100, the resin member 100 is sandwiched and heated between the heating members 110 and 112. However, the resin member 100 is heated without being in contact with the heating member. It is also possible to use a method, for example, a method of heating with a far-infrared wavelength halogen lamp or a method of heating by placing on a hot body without applying pressure.
- the heating temperature of the heating elements 110, 112 varies depending on the thickness of the resin member 100, for example, In the case of a polycarbonate resin member having a thickness of 1 mm, the heat deformation temperature (weighted deflection temperature) is 132 ° C (1.81 MPa), and the resin member 100 is softened using the heating elements 110 and 112. Heat to a temperature that can. Therefore, in order to bring the resin member 100 into a softened state, the temperature of the resin member 100 can be controlled by the heating temperature and pressure of the heating elements 110 and 112, the thickness of the resin member 100, the material of the resin member, the heating time, and the like. Therefore, a manufacturing method for manufacturing a key top for a pushbutton switch that is continuous with a molding process described later becomes possible.
- the heating process and the molding process can be made a single process. Work during the molding process is simplified, downsizing of the device, and sheet-like resin members including thin key tops for pushbutton switches can be stably manufactured, improving yield. Mass production is also possible, and it can be manufactured at low cost. In particular, since the thickness of the resin member is very thin, warping and extension occur when sticking to and removing from the heating element. However, by using a single process for the heating process and the molding process, The impact on the production of thin key tops can be minimized.
- a molding process is performed. Specifically, the resin member 100 in a soft state is pressed using a molding die 130 or 140 that does not punch a molded product with a molding die, and a sheet-like resin member 102 including a three-dimensional key top 120 is obtained. To be integrally molded. As shown in FIG. 2A, the molding die 130 is provided with a three-dimensional recess 132 for molding a three-dimensional key top 120. The other mold 140 is a flat mold having no three-dimensional shape. Therefore, in the molding process, the softened resin member is embossed and integrally molded into a sheet-like resin member 102 including a three-dimensional key top 120 as shown in FIG. 2B.
- the resin member in the soft crease state is molded using the molds 130 and 140, and the recess 132 formed in the mold 130 is embossed into the resin member to include the three-dimensional key top 120.
- the sheet-like resin member 102 including the pushbutton switch thin key top 120 having accuracy can be easily and stably integrally formed.
- the resin member in the soft state is simply embossed by the molding die, so that the molded product can be made as thin as possible. Therefore, it is possible to reduce the thickness to the performance limit required for the key top for a push button switch, which is a molded product, for example, a control limit value for ensuring strength.
- a control limit value for ensuring strength for example, in the case of a polycarbonate resin member in a softened state, after cooling, if the thickness is less than 0.6 mm, cracking occurs due to insufficient strength, so a sheet-like shape including a key top for a thin pushbutton switch with a control value of 0.6 mm. It becomes possible to integrally mold the resin member.
- the slit 150 is formed in the sheet-like resin member 102 including the key top 120 for the push button switch that is integrally molded, and thus cooling is performed until the resin member 102 is solidified.
- a slit forming step of forming slits 150 at least partially along the periphery of the three-dimensional key top 120 is performed on the sheet-like resin member 102 including the key top 120 for the push button switch. . Since cooling is performed until the slit 150 can be formed in the resin member 102, it is possible to form the slit 150 along the periphery of the key top 120 with high accuracy.
- the slit 150 is formed by, for example, a punching molding method using a punching die.
- FIG. 3B is a diagram showing an example in which slits 150 are formed around the periphery of the push button switch key top 120.
- a connecting portion 160 is provided for connecting the key tops 120 to each other and between the key top 120 and the resin member 102.
- a slit 150 is provided along the periphery of the key top 120 other than the connecting portion 160. Is formed. Therefore, the resin member 102 including the key top 120 is prevented while preventing the key top 120 from being detached from the resin member 102 by minimizing the formed connecting portion 160 and forming many slits 150. It is possible to decorate integrally by a decorating process to be described later, and the key top 120 can be easily separated from the resin member 102 after decorating.
- the resin member 102 including the key top 120 for the push button switch in which the slit 150 is formed is decorated by known screen printing, spray coating, or the like. Therefore, in the slit forming process, when the slit is formed to the maximum along the periphery of the key top 120 in order to prevent the key top 120 from being detached from the resin member 102, the key top 120 is replaced with the resin member. It can be easily separated from 102. The top of the top 120 can be efficiently decorated.
- the resin member 102 including the thin key top 120 for pushbutton switches having the desired shape accuracy and dimensional accuracy is obtained.
- a series of steps can be performed continuously without requiring fine adjustment.
- the resin member 102 including the thin key top 120 for the push button switch can be stably manufactured, the yield can be improved, the mass production can be performed, and the manufacturing force can be reduced.
- the design change of the thin key top 120 for the push button switch can be dealt with only by changing the recess 132 formed in the molding die 130, 140 used for the die pressing. Because it does not require surface accuracy to match the two surfaces of the injection mold, the cost of the mold is also lower than that of the injection mold, so design changes can be made while minimizing the costs associated with design changes. It can be carried out.
- the decorated push button switch key top 120 is separated from the resin member 102.
- the decorated key top can be easily separated from the resin member by maximally forming the slit 150 along the periphery of the key top 120.
- the slit 150 is formed by, for example, a punching molding method using a punching die.
- FIG. 5 shows a thin keytop 120 for a pushbutton switch manufactured by a manufacturing method for manufacturing a keytop for a pushbutton switch according to the first embodiment of the present invention.
- the portion indicated by the broken line shows the resin member 102 cut off by the above-described cutting step.
- Thin key top 120 for pushbutton switch after manufacture It is possible to produce a key sheet for a push button switch by attaching it to an elastic body such as a rubber.
- the key top 120 in order to manufacture the key top 120 separated from the resin member 102, the key top 120 can be easily separated from the resin member 102, and the side surface of the key top 120 can be efficiently added.
- FIG. 6 shows an example of a resin member 202 including a key top 220 for a push button switch, which is a molded product when the separation process is not performed.
- a slit 260 is provided along the periphery of the key top 220 to provide a connecting portion 260 that connects the key top 220 and the resin member 202 on one of the four sides.
- the resin member including the key top 220 is integrally decorated by a decorating process.
- the key top 220 and the sheet-like resin member 202 are not separated, and the resin member including the key top 220 is obtained.
- the connecting portion 260 serves as a hinge mechanism, the key top 220 can swing with respect to the sheet-like resin member 202, and the resin member 202 including the key top 220 is used as a key sheet including the key top 220.
- the ability to manufacture a series of processes continuously and stably is simple and easy.
- the manufacturing method for manufacturing the key top for a pushbutton switch according to the second embodiment of the present invention is the same as the manufacturing method according to the first embodiment of the present invention described above, except that the slit forming step and the separation step are not included.
- FIG. 7 shows a manufacturing method for manufacturing a key top for a pushbutton switch according to the second embodiment of the present invention.
- 3 shows a resin member 302 including a thin key top 320 for a push button switch manufactured by the method.
- the manufacturing method for manufacturing a key top for a pushbutton switch according to the second embodiment of the present invention does not include a slit forming step and a separation step, and thus the key top 320 is formed on the sheet-like resin member 302. The Therefore, a key sheet composed of the key top 320 and the resin member 302 serving as a key base can be easily and stably manufactured through a series of processes.
- the sheet-shaped resin member is heated, embossed using a molding die, integrally molded into a sheet-shaped resin member including a three-dimensional key top, and decorated.
- a sheet-like resin member including a thin key top for a push button switch having desired shape accuracy and dimensional accuracy can be easily and continuously performed without requiring fine adjustment. it can.
- it is possible to stably manufacture a sheet-like resin member including a thin key top for a push button switch, improving yield, enabling mass production, and manufacturing at low cost. it can.
- the design change of the thin key top for the push button switch can be changed by changing the three-dimensional shape of the key top formed in the molding die used for the die pressing. Since the surface accuracy that matches the two surfaces is not required, the cost of the mold is lower than that of the injection mold, so it is possible to change the design while minimizing the costs associated with the design change. it can.
- the manufacturing method for manufacturing the key top for a pushbutton switch according to the present invention is not limited to the above-described embodiment, and includes various other embodiments.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Switches (AREA)
- Push-Button Switches (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07742340A EP2012332A4 (en) | 2006-04-26 | 2007-04-25 | METHOD FOR PRODUCING A KEY TOP FOR A PRESSURE SWITCH |
US12/297,229 US20090174111A1 (en) | 2006-04-26 | 2007-04-25 | Method of Manufacturing Key Top for Push Button Switch |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-122603 | 2006-04-26 | ||
JP2006122603A JP2007294320A (ja) | 2006-04-26 | 2006-04-26 | 押釦スイッチ用キートップを製造する方法 |
Publications (1)
Publication Number | Publication Date |
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WO2007123251A1 true WO2007123251A1 (ja) | 2007-11-01 |
Family
ID=38625146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2007/058905 WO2007123251A1 (ja) | 2006-04-26 | 2007-04-25 | 押釦スイッチ用キートップを製造する方法 |
Country Status (6)
Country | Link |
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US (1) | US20090174111A1 (ja) |
EP (1) | EP2012332A4 (ja) |
JP (1) | JP2007294320A (ja) |
KR (1) | KR20090009805A (ja) |
CN (1) | CN101479823A (ja) |
WO (1) | WO2007123251A1 (ja) |
Families Citing this family (1)
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KR101470421B1 (ko) * | 2013-03-07 | 2014-12-08 | 주식회사 케이티 | 모바일 디바이스와 ARS 문자메시지를 송수신하는 Messaging ARS 서버 및 방법 |
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JP2002197932A (ja) | 2000-12-27 | 2002-07-12 | Polymatech Co Ltd | シート状キートップ及びその製造方法 |
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JPS56128523A (en) * | 1980-03-11 | 1981-10-08 | Matsushita Electric Ind Co Ltd | Method of producing keyboard switch |
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- 2007-04-25 WO PCT/JP2007/058905 patent/WO2007123251A1/ja active Application Filing
- 2007-04-25 KR KR1020087025025A patent/KR20090009805A/ko not_active Application Discontinuation
- 2007-04-25 EP EP07742340A patent/EP2012332A4/en not_active Withdrawn
- 2007-04-25 CN CNA2007800238836A patent/CN101479823A/zh active Pending
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Also Published As
Publication number | Publication date |
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CN101479823A (zh) | 2009-07-08 |
JP2007294320A (ja) | 2007-11-08 |
KR20090009805A (ko) | 2009-01-23 |
EP2012332A4 (en) | 2012-04-25 |
EP2012332A1 (en) | 2009-01-07 |
US20090174111A1 (en) | 2009-07-09 |
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