JP4477684B2 - Switch movable contact unit and switch device having switch movable contact unit - Google Patents

Switch movable contact unit and switch device having switch movable contact unit Download PDF

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JP4477684B2
JP4477684B2 JP2008121209A JP2008121209A JP4477684B2 JP 4477684 B2 JP4477684 B2 JP 4477684B2 JP 2008121209 A JP2008121209 A JP 2008121209A JP 2008121209 A JP2008121209 A JP 2008121209A JP 4477684 B2 JP4477684 B2 JP 4477684B2
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flexible sheet
movable contact
switch
contact unit
flexible
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JP2009272121A (en
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貴之 佐藤
毅 鹿子木
禎一 佐藤
充 斎藤
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Alps Alpine Co Ltd
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Alps Electric Co Ltd
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Priority to JP2008121209A priority Critical patent/JP4477684B2/en
Priority to TW098110913A priority patent/TW201009865A/en
Priority to CN2009101378346A priority patent/CN101577188B/en
Priority to KR1020090038673A priority patent/KR101056975B1/en
Publication of JP2009272121A publication Critical patent/JP2009272121A/en
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    • 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
    • H01H13/705—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 characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • 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
    • 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
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/48—Snap-action arrangements depending upon deformation of elastic members using buckling of disc springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/18—Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks
    • H01H9/181—Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks using a programmable display, e.g. LED or LCD
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/036—Light emitting elements

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Push-Button Switches (AREA)

Description

本発明は、携帯電話の入力部等に活用され、複数の可動接点が一面に保持される可撓性シートと、この可撓性シートの他面に形成され、複数の可動接点を個別に押圧可能な複数の押圧用突起を含むスイッチ用可動接点ユニット、及びスイッチ用可動接点ユニットを有するスイッチ装置に関する。   The present invention is used for an input unit of a mobile phone, etc., and a flexible sheet in which a plurality of movable contacts are held on one surface, and formed on the other surface of the flexible sheet, and individually presses the plurality of movable contacts. The present invention relates to a switch movable contact unit including a plurality of possible pressing protrusions, and a switch device having the switch movable contact unit.

近年、携帯電話等の入力部として、可撓性を有する透光性樹脂からなる導光板の一辺端部に光源を取り付け、この可撓性導光板をスイッチ素子群を覆うように基板上に載置し、基板に光源を接続させることによって、各操作キーが可撓性導光板を介して各スイッチ素子の可動接点を固定接点に向けて押圧駆動できるようにすると共に、可撓性導光板の一辺端部から導入した光源の光をこの可撓性導光板の照光部で屈折させ、操作キー群の底面それぞれに投射するようにした照光機能付きのスイッチ装置が提案されている（例えば、特許文献１参照）。このように、その一辺端部から光源の光を導入できる可撓性導光板を備えたものでは、光源の数を大幅に低減でき、製造コスト及び消費電力を低減できる。
特開２００１−１６７６５５公報 In recent years, a light source is attached to one end of a light guide plate made of a light-transmitting resin having flexibility as an input unit of a mobile phone or the like, and this flexible light guide plate is mounted on a substrate so as to cover a switch element group. By placing the light source on the substrate, each operation key can drive the movable contact of each switch element toward the fixed contact via the flexible light guide plate, and the flexible light guide plate There has been proposed a switch device with an illumination function in which light of a light source introduced from one end is refracted by an illumination portion of the flexible light guide plate and projected onto each bottom surface of an operation key group (for example, a patent Reference 1). As described above, in the case of including a flexible light guide plate capable of introducing light from the light source from one end portion, the number of light sources can be greatly reduced, and the manufacturing cost and power consumption can be reduced.
JP 2001-167655 A

ところで昨今、前述した可撓性導光板を含むと共に、複数の可動接点が一面に保持される可撓性シートと、この可撓性シートの他面に形成され、複数の可動接点を個別に押圧可能な複数の押圧用突起とを含むスイッチ用可動接点ユニットが開発されて来ている。このスイッチ用可動接点ユニットにあっては、可撓性シートの他面に可撓性導光板が積層される構造となっている。このように可撓性シートの他面に押圧用突起を備えたものでは、この押圧用突起を介して可撓性シートの一面に保持された可動接点を押圧することができ、基板に設けられた固定接点と、可動接点との接離を確実に行なわせることができる。   By the way, in recent years, the flexible light guide plate described above is included and a plurality of movable contacts are held on one side, and the other side of the flexible sheet is formed to press the plurality of movable contacts individually. Movable contact units for switches have been developed that include a plurality of possible pressing protrusions. This switch movable contact unit has a structure in which a flexible light guide plate is laminated on the other surface of the flexible sheet. In this way, in the case where the other surface of the flexible sheet is provided with the pressing protrusion, the movable contact held on the one surface of the flexible sheet can be pressed via the pressing protrusion and provided on the substrate. In addition, the fixed contact and the movable contact can be reliably brought into and out of contact with each other.

しかし、可撓性シートの他面に押圧用突起を備えた構成とする従来のスイッチ用可動接点ユニットにあっては、可撓性シートに押圧用突起を形成することに関する問題があった。すなわち、可撓性シートに押圧用突起を形成する際に表面張力を利用しており、押圧用突起が形成される可撓性シートの他面を成す表面が平滑面でないと、押圧用突起が左右対称のバランスの良い形状とならず、いびつな形状になってしまう。このように、押圧用突起がいびつな形状になると、押圧用突起による可動接点の押圧性能が低下する虞がある。したがって、このように押圧用突起がいびつな形状になることを避けるために、他面全体が平滑面となる可撓性シートを設けることが考えられる。しかし、可撓性シートの他面全体が平滑面であると、可撓性導光板と可撓性シートとが貼り付きやすくなり、このような貼り付きによって照光異常を生じる懸念がある。   However, the conventional switch movable contact unit having the pressing protrusion on the other surface of the flexible sheet has a problem related to forming the pressing protrusion on the flexible sheet. That is, when the pressing protrusion is formed on the flexible sheet, surface tension is used, and if the surface forming the other surface of the flexible sheet on which the pressing protrusion is formed is not a smooth surface, the pressing protrusion The shape is not symmetrical and has a well-balanced shape. Thus, when the pressing protrusion has an irregular shape, the pressing performance of the movable contact by the pressing protrusion may be reduced. Therefore, in order to avoid such an irregular shape of the pressing protrusion, it is conceivable to provide a flexible sheet whose entire other surface is a smooth surface. However, if the entire other surface of the flexible sheet is a smooth surface, the flexible light guide plate and the flexible sheet are likely to stick together, and there is a concern that such sticking may cause illumination abnormality.

本発明は、前述した従来技術における実状からなされたもので、その目的は、押圧用突起を左右対称のバランスの良い形状に形成できると共に、可撓性導光板と可撓性シートとの貼り付きを防ぐことができるスイッチ用可動接点ユニット、及びスイッチ用可動接点ユニットを有するスイッチ装置を提供することにある。   The present invention is made from the actual state in the above-described prior art. The purpose of the present invention is to form the pressing protrusions in a symmetrical and well-balanced shape and to attach the flexible light guide plate and the flexible sheet. It is an object of the present invention to provide a movable contact unit for a switch that can prevent the above and a switch device having the movable contact unit for a switch.

前記目的を達成するために、本発明に係るスイッチ用可動接点ユニットは、光源及び複数の固定接点が配設された基板と、前記固定接点にそれぞれ接離可能な複数の可動接点を押圧可能な複数の操作キーとの間に介設され、前記複数の可動接点が一面に保持される可撓性シートと、この可撓性シートの他面に積層され、側端面の一部で前記光源からの光が入射される入光部となし、かつ前記複数の操作キーのそれぞれの底面を臨む複数箇所に照光部を有する可撓性導光板と、前記可撓性シートの他面に形成され、前記複数の可動接点を個別に押圧可能な複数の押圧用突起とを含むスイッチ用可動接点ユニットであって、前記押圧用突起を前記可撓性シートの他面の平滑面に形成し、前記複数の押圧用突起を除く前記可撓性シートの他面部分に、微小な凹凸部を形成したことを特徴としている。   In order to achieve the above object, a movable contact unit for a switch according to the present invention is capable of pressing a substrate on which a light source and a plurality of fixed contacts are disposed, and a plurality of movable contacts that can be brought into and out of contact with the fixed contacts. A flexible sheet that is interposed between a plurality of operation keys and that holds the plurality of movable contacts on one surface, and is laminated on the other surface of the flexible sheet. A light incident portion where the light is incident and a flexible light guide plate having illumination portions at a plurality of locations facing the bottom surfaces of the plurality of operation keys, and formed on the other surface of the flexible sheet, A switch movable contact unit including a plurality of pressing protrusions capable of individually pressing the plurality of movable contacts, wherein the pressing protrusions are formed on a smooth surface of the other surface of the flexible sheet, On the other side of the flexible sheet excluding the pressing projection It is characterized in that the formation of the minute uneven portion.

このように構成した本発明は、複数の押圧用突起のそれぞれは可撓性シートの他面に設けられる平滑面に形成されることから、これらの押圧用突起を、平滑面を介しての表面張力を利用して全て左右対称のバランスの良い形状に形成できる。また、複数の押圧用突起を除く可撓性シートの他面部分に、微小な凹凸部を形成したことから、可撓性シートの他面部分と可撓性導光板との間に、微小な凹凸部によって空気層を形成でき、これにより可撓性導光板と可撓性シートとの貼り付きを防ぐことができる。   In the present invention configured as described above, since each of the plurality of pressing protrusions is formed on a smooth surface provided on the other surface of the flexible sheet, the pressing protrusions are formed on the surface through the smooth surface. All of them can be formed into a symmetrical shape with good balance by using tension. In addition, since the minute uneven portion is formed on the other surface portion of the flexible sheet excluding the plurality of pressing protrusions, a minute amount is formed between the other surface portion of the flexible sheet and the flexible light guide plate. An air layer can be formed by the concavo-convex portion, thereby preventing sticking between the flexible light guide plate and the flexible sheet.

また、本発明のスイッチ用可動接点ユニットは、前記発明において、前記可撓性シートの他面に形成される前記平滑面は易接着処理層から成り、前記可撓性シートの他面に形成される前記微小な凹凸部は、前記易接着処理層をレーザーで除去することにより形成されたものから成ることを特徴としている。このように構成した本発明は、レーザーを使用して可撓性シートの他面部分に、容易に微小な凹凸部を形成することができる。   In the movable contact unit for a switch according to the present invention, the smooth surface formed on the other surface of the flexible sheet is formed of an easy adhesion treatment layer and is formed on the other surface of the flexible sheet. The minute concavo-convex portion is formed by removing the easy adhesion treatment layer with a laser. According to the present invention configured as described above, a minute uneven portion can be easily formed on the other surface portion of the flexible sheet using a laser.

また、本発明のスイッチ用可動接点ユニットは、前記発明において、前記押圧用突起は、ディスペンサーまたは印刷によって形成されたものから成ることを特徴としている。このように構成した本発明は、ディスペンサーまたは印刷によって可撓性シートの他面部分に、容易に押圧用突起を形成することができる。   The switch movable contact unit according to the present invention is characterized in that, in the invention, the pressing protrusion is formed by a dispenser or printing. According to the present invention configured as described above, pressing protrusions can be easily formed on the other surface portion of the flexible sheet by dispenser or printing.

また、本発明のスイッチ用可動接点ユニットは、前記発明において、前記可撓性シートの他面に形成される平滑面を、前記押圧用突起が形成される部分、及びこの押圧用突起が形成される部分の周囲に設けられる領域に形成し、この領域を除く前記可撓性シートの他面部分に、前記微小な凹凸部を形成したことを特徴としている。   In the switch movable contact unit according to the present invention, the smooth surface formed on the other surface of the flexible sheet is formed on the surface where the pressing protrusion is formed, and the pressing protrusion is formed. It is characterized in that it is formed in a region provided around a portion to be formed, and the minute uneven portion is formed on the other surface portion of the flexible sheet excluding this region.

このように構成した本発明は、例えば可撓性シートの他面に形成される平滑面の領域を、押圧用突起を設けた可撓性シートの他面部分に可撓性導光板を積層した際に、押圧用突起に当たって撓められる可撓性導光板が可撓性シートの他面に接触する部分よりは小さい領域であるものの、可撓性シートの他面に形成される押圧用突起の部分よりは大きい領域とすることができる。これにより、微小な凹凸部の形成領域を必要最小限の領域とすることができる。   In the present invention configured as described above, for example, a smooth surface region formed on the other surface of the flexible sheet is laminated with a flexible light guide plate on the other surface portion of the flexible sheet provided with pressing protrusions. In this case, although the flexible light guide plate that is deflected by hitting the pressing protrusion is smaller than the portion that contacts the other surface of the flexible sheet, the pressing protrusion formed on the other surface of the flexible sheet The area can be larger than the portion. Thereby, the formation area of a minute uneven part can be made into a necessary minimum area.

また、本発明のスイッチ用可動接点ユニットを有するスイッチ装置は、光源及び複数の固定接点が配設された基板と、前記固定接点にそれぞれ接離可能な複数の可動接点を押圧可能な複数の操作キーとを備えるとともに、前記複数の可動接点が一面に保持される可撓性シートと、この可撓性シートの他面に積層され、側端面の一部で前記光源からの光が入射される入光部となし、かつ前記複数の操作キーのそれぞれの底面を臨む複数箇所に照光部を有する可撓性導光板と、前記可撓性シートの他面に形成され、前記複数の可動接点を個別に押圧可能な複数の押圧用突起とを含むスイッチ用可動接点ユニットを備え、このスイッチ用可動接点ユニットの前記可撓性導光板の前記入光部を、前記光源の発光部に近接した状態で対向させ、前記入光部から導入された光が前記照光部を介して前記操作キーの底面に投射されるように前記光源及び前記可撓性導光板を配置し、前記押圧用突起を前記可撓性シートの他面の平滑面に形成し、前記複数の押圧用突起を除く前記可撓性シートの他面部分に、微小な凹凸部を形成したことを特徴としている。   The switch device having a movable contact unit for a switch according to the present invention includes a substrate on which a light source and a plurality of fixed contacts are disposed, and a plurality of operations capable of pressing a plurality of movable contacts that can be brought into and out of contact with the fixed contacts. A flexible sheet in which the plurality of movable contacts are held on one surface, and the other surface of the flexible sheet, and light from the light source is incident on a part of the side end surface. A flexible light guide plate having a light illuminating portion at a plurality of locations facing the bottom surface of each of the plurality of operation keys, and a plurality of movable contacts formed on the other surface of the flexible sheet. A switch movable contact unit including a plurality of pressing protrusions that can be individually pressed, and the light incident portion of the flexible light guide plate of the switch movable contact unit is close to the light emitting portion of the light source Facing the light The light source and the flexible light guide plate are disposed so that the light introduced from the light source is projected onto the bottom surface of the operation key via the illumination unit, and the pressing protrusion is arranged on the other surface of the flexible sheet. It is characterized in that a minute uneven portion is formed on the other surface portion of the flexible sheet formed on a smooth surface and excluding the plurality of pressing protrusions.

このように構成した本発明は、光源からの光が可撓性導光板の照光部を介してその底面に投射されている操作キーを押圧すると、この操作キーによって可撓性導光板が撓められ、操作キーに与えられた押圧力が可撓性シートの他面に設けられた押圧用突起に伝えられ、さらに、この押圧用突起を介して可撓性シートの一面に設けられた可動接点が押圧される。これにより、可動接点と固定接点とが導通し、スイッチオンとなる。また、操作キーに与えていた押圧力を除くと、可動接点の弾性により、この可動接点が元の形態に復帰し、押圧用突起を含む可撓性シート、及び可撓性導光板を押し上げる。この間、可動接点が固定接点から離れてスイッチオフとなる。   In the present invention configured as described above, when the light from the light source presses the operation key projected onto the bottom surface of the flexible light guide plate through the illumination portion, the flexible light guide plate is bent by the operation key. The pressing force applied to the operation key is transmitted to the pressing protrusion provided on the other surface of the flexible sheet, and the movable contact provided on one surface of the flexible sheet via the pressing protrusion. Is pressed. As a result, the movable contact and the fixed contact are conducted, and the switch is turned on. When the pressing force applied to the operation keys is removed, the movable contact returns to its original form due to the elasticity of the movable contact, and the flexible sheet including the pressing protrusion and the flexible light guide plate are pushed up. During this time, the movable contact leaves the fixed contact and is switched off.

また、スイッチ用可動接点ユニットに含まれる複数の押圧用突起のそれぞれは、可撓性シートの他面に設けられる平滑面に形成されることから、これらの押圧用突起を、平滑面を介しての表面張力を利用して全て左右対称のバランスの良い形状に形成できる。また、複数の押圧用突起を除く可撓性シートの他面部分に、微小な凹凸部を形成したことから、この可撓性シートの他面部分と可撓性導光板との間に、微小な凹凸部によって空気層を形成でき、これにより可撓性導光板と可撓性シートとの貼り付きを防ぐことができる。   In addition, each of the plurality of pressing protrusions included in the switch movable contact unit is formed on a smooth surface provided on the other surface of the flexible sheet. Can be formed in a symmetrical and well-balanced shape by utilizing the surface tension of. In addition, since a minute uneven portion is formed on the other surface portion of the flexible sheet excluding a plurality of pressing protrusions, a minute amount is formed between the other surface portion of the flexible sheet and the flexible light guide plate. An air layer can be formed by a simple uneven part, whereby sticking between the flexible light guide plate and the flexible sheet can be prevented.

本発明は、スイッチ用可動接点ユニットに含まれる可撓性シートの他面の平滑面に、複数の可動接点を個別に押圧可能な複数の押圧用突起を形成し、複数の押圧用突起を除く可撓性シートの他面部分に微小な凹凸部を形成したことから、複数の押圧用突起を平滑面を介しての表面張力を利用して、左右対称のバランスの良い形状に形成でき、これらの押圧用突起による可動接点に対する安定した押圧動作を実現できる。また、可撓性シートの他面部分と可撓性導光板との間に微小な凹凸部を介して空気層を形成でき、これによって可撓性導光板と可撓性シートとの貼り付きを防ぐことができ、光源からの光を可撓性導光板の照光部を介して操作キーの底面に投射して操作キーを精度良く照光させることができる。これらにより、信頼性の高いスイッチ用可動接点ユニット、及びスイッチ用可動接点ユニットを有するスイッチ装置を得ることができる。   In the present invention, a plurality of pressing protrusions capable of individually pressing a plurality of movable contacts are formed on the smooth surface of the other surface of the flexible sheet included in the switch movable contact unit, and the plurality of pressing protrusions are excluded. Since the minute uneven portions are formed on the other surface portion of the flexible sheet, a plurality of pressing protrusions can be formed into a symmetrical and well-balanced shape using surface tension through a smooth surface. A stable pressing operation against the movable contact by the pressing protrusion can be realized. In addition, an air layer can be formed between the other surface portion of the flexible sheet and the flexible light guide plate through a minute uneven portion, thereby sticking the flexible light guide plate and the flexible sheet. The light from the light source can be projected onto the bottom surface of the operation key through the illumination part of the flexible light guide plate, and the operation key can be illuminated with high accuracy. Accordingly, a highly reliable switch movable contact unit and a switch device having the switch movable contact unit can be obtained.

以下，本発明に係るスイッチ用可動接点ユニット、及びスイッチ用可動接点ユニットを有するスイッチ装置を実施するための最良の形態を図に基づいて説明する。   The best mode for carrying out the switch movable contact unit and the switch device having the switch movable contact unit according to the present invention will be described below with reference to the drawings.

図１は本発明に係るスイッチ用可動接点ユニットを有するスイッチ装置の一実施形態を蓋ケースを省略して示した平面図、図２は図１に示す本実施形態に係るスイッチ用可動接点ユニットを有するスイッチ装置の要部断面図、図３は本実施形態に係るスイッチ用可動接点ユニットを有するスイッチ装置に備えられる可撓性シートの要部を示す平面図である。   FIG. 1 is a plan view showing an embodiment of a switch device having a switch movable contact unit according to the present invention with the lid case omitted, and FIG. 2 shows the switch movable contact unit according to the present embodiment shown in FIG. FIG. 3 is a plan view showing a main part of a flexible sheet provided in the switch device having the switch movable contact unit according to the present embodiment.

図１，２に示す本実施形態に係るスイッチ装置は、光源、例えばＬＥＤ２、及びスイッチ素子を構成する固定接点７、コモン接点８が実装された基板１と、蓋ケース４の開口４ａに配置された複数の操作キー３と、基板１上に載置された本実施形態に係るスイッチ用可動接点ユニット５とによって主に構成されている。   The switch device according to the present embodiment shown in FIGS. 1 and 2 is disposed in a light source, for example, an LED 2, a substrate 1 on which a fixed contact 7 and a common contact 8 constituting a switch element are mounted, and an opening 4 a of a lid case 4. The operation key 3 and the switch movable contact unit 5 according to the present embodiment placed on the substrate 1 are mainly configured.

スイッチ用可動接点ユニット５は、複数の可動接点９が一面に保持される可撓性シート１０と、この可撓性シート１０の他面に積層される可撓性導光板６と、可撓性シート１０の他面に形成され、複数の可動接点９を個別に押圧可能な複数の押圧用突起１２と、可撓性シート１０の下側に配置され、可動接点９が収容される空間部を有し、基板１に接着されるスペーサシート１１とを含んでいる。   The switch movable contact unit 5 includes a flexible sheet 10 on which a plurality of movable contacts 9 are held on one surface, a flexible light guide plate 6 laminated on the other surface of the flexible sheet 10, and a flexible A plurality of pressing protrusions 12 that are formed on the other surface of the sheet 10 and can individually press the plurality of movable contacts 9, and a space that is disposed below the flexible sheet 10 and accommodates the movable contacts 9. And a spacer sheet 11 bonded to the substrate 1.

基板１の上面には、各操作キー３の下方に固定接点７やコモン接点８が配設されており、両接点７，８は所定の間隔を存して露出している。また、この基板１には、固定接点７やコモン接点８から導出された図示しない配線パターンやスルーホール等が設けられている。ＬＥＤ２の発光部２ａは、可撓性導光板６の一辺端に沿う側端面６ａの中央部に近接状態で対向しており、発光部２ａから出射されて可撓性導光板６内へ導入された光が、この可撓性導光板６の照光部６ｂを介して操作キー３の底面へ投射されるようになっている。   On the upper surface of the substrate 1, a fixed contact 7 and a common contact 8 are disposed below each operation key 3, and both the contacts 7 and 8 are exposed with a predetermined interval. In addition, the substrate 1 is provided with a wiring pattern, a through hole (not shown) derived from the fixed contact 7 and the common contact 8. The light emitting portion 2a of the LED 2 faces the central portion of the side end face 6a along one side end of the flexible light guide plate 6 in a close state, and is emitted from the light emitting portion 2a and introduced into the flexible light guide plate 6. The projected light is projected onto the bottom surface of the operation key 3 through the illumination part 6 b of the flexible light guide plate 6.

前述の固定接点７及びコモン接点８と、可撓性シート１０の一面、すなわち下面に保持される複数の可動接点９とによってスイッチ素子が構成されている。また、可撓性シート１０の下面のうち可動接点９群の存しない領域は、スペーサシート１１の上面に接着されている。ただし、スイッチ用可動接点ユニット５の保管時や運搬時には、スペーサシート１１に例えば図示せぬ剥離テープ、及びこの剥離テープに接着される表面保護シートを貼着しておき、スイッチ用可動接点ユニット５を基板１に固定する段階で、スペーサシート１１に貼着されていた剥離シート、及び表面保護シートを剥がして、スイッチ用可動接点ユニット５を基板１に接着することが行なわれる。   The above-described fixed contact 7 and common contact 8 and a plurality of movable contacts 9 held on one surface, that is, the lower surface of the flexible sheet 10 constitute a switch element. In addition, a region where the movable contact 9 group does not exist in the lower surface of the flexible sheet 10 is bonded to the upper surface of the spacer sheet 11. However, when the switch movable contact unit 5 is stored or transported, for example, a release tape (not shown) and a surface protection sheet adhered to the release tape are adhered to the spacer sheet 11 so that the switch movable contact unit 5 Is fixed to the substrate 1, the release sheet and the surface protection sheet attached to the spacer sheet 11 are peeled off, and the switch movable contact unit 5 is adhered to the substrate 1.

可動接点９は、ドーム状に成形されて反転時にクリック感を生起する金属製の板ばねからなり、その上面が可撓性シート１０の下面に接着されている。可撓性シート１０が基板１上に位置決めおよび固定されると、図２に示すように、可動接点９のそれぞれはスペーサシート１１に形成された空間部内に収容され、可動接点９の周縁部がコモン接点８に当接して常時導通すると共に、可動接点９の中央部が固定接点７と接離可能に対向する。   The movable contact 9 is formed of a metal leaf spring that is formed in a dome shape and generates a click feeling when reversed, and its upper surface is bonded to the lower surface of the flexible sheet 10. When the flexible sheet 10 is positioned and fixed on the substrate 1, as shown in FIG. 2, each of the movable contacts 9 is accommodated in a space formed in the spacer sheet 11, and the peripheral portion of the movable contact 9 is While being in contact with the common contact 8 and always conducting, the central portion of the movable contact 9 faces the fixed contact 7 so as to be able to contact and separate.

可撓性導光板６は、例えばウレタンやシリコンなどの透光性に優れた可撓性材料をシート状に成形したものである。可撓性導光板６の上面には操作キー３の底面と対向する箇所に、この可撓性導光板６内を進む光を屈折させて上方へ投射するための照光部６ｂが設けられている。また、可撓性導光板６の側端面６ａの中央部は、ＬＥＤ２からの光が入射される入光部６ｃとなっている。   The flexible light guide plate 6 is formed by molding a flexible material having excellent translucency such as urethane or silicon into a sheet shape. On the upper surface of the flexible light guide plate 6, an illuminating portion 6 b for refracting the light traveling through the flexible light guide plate 6 and projecting it upward is provided at a location facing the bottom surface of the operation key 3. . Moreover, the center part of the side end surface 6a of the flexible light-guide plate 6 is the light-incidence part 6c into which the light from LED2 injects.

操作キー３は、基板１上に載置された可撓性導光板６の照光部６ｂ上に昇降可能に搭載されており、蓋ケース４によって抜け止めがなされている。図示しないが、操作キー３の上面には文字や記号等が印刷された発光部が設けられており、この発光部が底面側から投射される照光部６ｂの光によって発光するようになっている。   The operation key 3 is mounted on the illuminating portion 6 b of the flexible light guide plate 6 placed on the substrate 1 so as to be movable up and down, and is prevented from being removed by the lid case 4. Although not shown, a light emitting portion on which characters, symbols, and the like are printed is provided on the upper surface of the operation key 3, and this light emitting portion emits light by the light of the illumination portion 6b projected from the bottom surface side. .

可撓性シート１０は易接着処理層を表面に有する易接着フィルムから成り、図３に示すように、可撓性シート１０に形成される複数の押圧用突起１２のそれぞれは、可撓性シート１０の他面に設けられた易接着処理層から成る複数の平滑面１０のそれぞれに形成され、複数の可動接点９を個別に押圧可能になっている。押圧用突起１２のそれぞれは、例えば透明な樹脂より成り、ディスペンサーによって形成されている。   The flexible sheet 10 is composed of an easy-adhesion film having an easy-adhesion treatment layer on its surface. As shown in FIG. 3, each of the plurality of pressing protrusions 12 formed on the flexible sheet 10 is a flexible sheet. 10 is formed on each of a plurality of smooth surfaces 10 made of an easy-adhesion treatment layer provided on the other surface, and the plurality of movable contacts 9 can be individually pressed. Each of the pressing protrusions 12 is made of, for example, a transparent resin and is formed by a dispenser.

図３に示すように、複数の押圧用突起１２を除く可撓性シート１０の他面部分に、微小な凹凸部１０ｂを形成してある。これらの微小な凹凸部１０ｂは、例えば可撓性シート１０の表面の易接着処理層をレーザーで除去することによって形成されている。可撓性シート１０の他面に形成される平滑面１０ａを、押圧用突起１２が形成される部分、及びこの押圧用突起１２が形成される部分の周囲に設けられる領域に形成し、この領域を除く可撓性シート１０の他面部分に、微小な凹凸部１０ｂを形成してある。例えば、可撓性シート１０の他面に形成される平滑面１０ａの領域は、押圧用突起１２を設けた可撓性シート１０の他面部分に可撓性導光板６を積層した際に、図２に示すように、押圧用突起１２に当たって撓められる可撓性導光板６が可撓性シート１０の他面に接触する部分よりは小さい領域であるものの、可撓性シート１０の他面に形成される押圧用突起１２の部分よりは大きい領域となっている。   As shown in FIG. 3, minute uneven portions 10 b are formed on the other surface portion of the flexible sheet 10 excluding the plurality of pressing protrusions 12. These minute concavo-convex portions 10b are formed, for example, by removing the easy adhesion treatment layer on the surface of the flexible sheet 10 with a laser. The smooth surface 10a formed on the other surface of the flexible sheet 10 is formed in a portion where the pressing protrusion 12 is formed and a region provided around the portion where the pressing protrusion 12 is formed. On the other surface portion of the flexible sheet 10 excluding, a minute uneven portion 10b is formed. For example, the region of the smooth surface 10a formed on the other surface of the flexible sheet 10 is obtained when the flexible light guide plate 6 is laminated on the other surface portion of the flexible sheet 10 provided with the pressing protrusions 12. As shown in FIG. 2, although the flexible light guide plate 6 that is deflected by hitting against the pressing protrusion 12 is a smaller area than the portion that contacts the other surface of the flexible sheet 10, the other surface of the flexible sheet 10. The area is larger than the portion of the pressing protrusion 12 formed on the surface.

次に、このように構成された本実施形態に係るスイッチ装置の動作について説明する。操作キー３を下方へ押し込むと、可撓性導光板６、及び可撓性シート１０に形成した押圧用突起１２を介して可動接点９が押圧駆動され、操作キー３が所定ストローク下降した時点で、可動接点９の中央部が反転して固定接点７に当接する。その結果、可動接点９を介して固定接点７とコモン接点８とが導通し、スイッチオンとなる。また、可動接点９の反転時にクリック感が生起され、このクリック感によって押圧操作が確実に行われたことを感得することができる。なお、操作キー３に対する押圧操作力が除去されると、可動接点９は自らの弾性で元のドーム形状に復帰し、可撓性導光板６、及び押圧用突起１２を有する可撓性シート１０も撓みが解消され、操作キー３は初期位置まで押し上げられる。この間、可動接点９が固定接点７から離れ、スイッチオフとなる。   Next, the operation of the switch device according to this embodiment configured as described above will be described. When the operation key 3 is pushed downward, the movable contact 9 is pressed and driven through the flexible light guide plate 6 and the pressing projection 12 formed on the flexible sheet 10, and when the operation key 3 is lowered by a predetermined stroke. The central portion of the movable contact 9 is reversed and comes into contact with the fixed contact 7. As a result, the fixed contact 7 and the common contact 8 are brought into conduction via the movable contact 9, and the switch is turned on. In addition, a click feeling is generated when the movable contact 9 is reversed, and it can be felt that the pressing operation has been reliably performed by this click feeling. When the pressing operation force on the operation key 3 is removed, the movable contact 9 returns to its original dome shape by its own elasticity, and the flexible sheet 10 having the flexible light guide plate 6 and the pressing protrusion 12 is provided. As a result, the operation key 3 is pushed up to the initial position. During this time, the movable contact 9 is separated from the fixed contact 7 and switched off.

このように構成した本実施形態によれば、スイッチ用可動接点ユニット５に備えられる複数の押圧用突起１２のそれぞれは、可撓性シート１０の他面に設けられる平滑面１０ａに形成されることから、これらの押圧用突起１０ａを、平滑面１０ａを介しての表面張力を利用していびつな形状に形成することなく、全て左右対称のバランスの良い形状に形成できる。したがって、これらの押圧用突起１２による可動接点９に対する安定した押圧動作を実現できる。また、複数の押圧用突起１２を除く可撓性シート１０の他面部分に、微小な凹凸部１０ｂを形成したことから、この可撓性シート１０の他面部分と可撓性導光板６との間に、微小な凹凸部１０ｂによって空気層を形成でき、これにより可撓性導光板６と可撓性シート１０との貼り付きを防ぐことができる。したがって、ＬＥＤ２からの光を可撓性導光板６の照光部６ｂを介して操作キー３の底面に投射して操作キー３を精度良く照光させることができる。これらにより、信頼性の高いスイッチ用可動接点ユニット５、及びスイッチ用可動接点ユニット５を有するスイッチ装置を得ることができる。   According to the present embodiment configured as described above, each of the plurality of pressing protrusions 12 provided in the switch movable contact unit 5 is formed on the smooth surface 10 a provided on the other surface of the flexible sheet 10. Therefore, these pressing protrusions 10a can be formed in a symmetrical and well-balanced shape without forming an irregular shape using surface tension via the smooth surface 10a. Therefore, a stable pressing operation against the movable contact 9 by the pressing protrusions 12 can be realized. In addition, since the minute uneven portion 10b is formed on the other surface portion of the flexible sheet 10 excluding the plurality of pressing protrusions 12, the other surface portion of the flexible sheet 10 and the flexible light guide plate 6 In the meantime, an air layer can be formed by the minute concavo-convex portions 10 b, whereby sticking between the flexible light guide plate 6 and the flexible sheet 10 can be prevented. Therefore, the operation key 3 can be illuminated with high accuracy by projecting the light from the LED 2 onto the bottom surface of the operation key 3 via the illumination unit 6 b of the flexible light guide plate 6. Accordingly, it is possible to obtain a switch movable contact unit 5 with high reliability and a switch device having the switch movable contact unit 5.

また、本実施形態に係るスイッチ用可動接点ユニット５に備えられる可撓性シート１０の他面に形成される平滑面１０ａは、前述のように易接着処理層から成り、可撓性シート１０の他面に形成される微小な凹凸部１０ｂは、易接着処理層をレーザーで除去することにより形成されたものから成っている。このように、レーザーを使用して可撓性シート１０の他面部分に、容易に微小な凹凸部１０ｂを形成することができ、製作工数を少なく抑えることができる。   Further, the smooth surface 10a formed on the other surface of the flexible sheet 10 provided in the switch movable contact unit 5 according to the present embodiment is composed of an easy adhesion treatment layer as described above. The minute concavo-convex portion 10b formed on the other surface is formed by removing the easy adhesion treatment layer with a laser. In this way, the minute uneven portion 10b can be easily formed on the other surface portion of the flexible sheet 10 using a laser, and the number of manufacturing steps can be reduced.

また、本実施形態に係るスイッチ用可動接点ユニット５に備えられる複数の押圧用突起１２は、前述のようにディスベンサーによって形成されたものから成っている。このようにディスペンサーによって可撓性シート１０の他面部分に、容易に押圧用突起１２を形成することができ、これによっても製作工数を少なく抑えることができる。   In addition, the plurality of pressing protrusions 12 provided in the switch movable contact unit 5 according to the present embodiment are formed by a dispenser as described above. In this way, the pressing protrusion 12 can be easily formed on the other surface portion of the flexible sheet 10 by the dispenser, and this can also reduce the number of manufacturing steps.

また、前述のように本実施形態に係るスイッチ用可動接点ユニット５に備えられる可撓性シート１０の他面に形成される平滑面１０ａを、押圧用突起１２が形成される部分、及びこの押圧用突起１２が形成されている部分の周囲に設けられる領域に形成し、この領域を除く可撓性シート１０の他面部分に、微小な凹凸部１０ｂを形成してある。例えば、可撓性シート１０の側面に形成される平滑面１０ａの領域を、押圧用突起１２を設けた可撓性シート１０の他面部分に可撓性導光板６を積層した際に、押圧用突起１２に当たって撓められる可撓性導光板６が可撓性シート１０の他面に接触する部分よりは小さい領域であるものの、可撓性シート１０の他面に形成される押圧用突起１２の部分よりは大きい領域にしてある。これにより、微小な凹凸部１０ｂの形成領域を必要最小限の領域にすることができ、製作工数を少なくすることに貢献する。   Further, as described above, the smooth surface 10a formed on the other surface of the flexible sheet 10 provided in the switch movable contact unit 5 according to the present embodiment, the portion where the pressing protrusion 12 is formed, and this pressing The protrusions 12 are formed in a region provided around the portion where the protrusions 12 are formed, and minute uneven portions 10b are formed on the other surface portion of the flexible sheet 10 excluding this region. For example, when the flexible light guide plate 6 is laminated on the other surface portion of the flexible sheet 10 provided with the pressing projections 12, the area of the smooth surface 10 a formed on the side surface of the flexible sheet 10 is pressed. The pressing projection 12 formed on the other surface of the flexible sheet 10, although the flexible light guide plate 6 that is deflected by hitting the projection 12 is smaller than the portion that contacts the other surface of the flexible sheet 10. The area is larger than this area. Thereby, the formation area of the minute concavo-convex portion 10b can be made the minimum necessary area, which contributes to reducing the number of manufacturing steps.

なお、前記実施形態では、スイッチ用可動接点ユニット５に含まれる可撓性シート１０の他面に設けられる押圧用突起１２をディスペンサーによって形成してあるが、印刷によって形成してもよい。   In the embodiment, the pressing protrusion 12 provided on the other surface of the flexible sheet 10 included in the switch movable contact unit 5 is formed by a dispenser, but may be formed by printing.

本発明に係るスイッチ用可動接点ユニットを有するスイッチ装置の一実施形態を蓋ケースを省略して示した平面図である。It is the top view which abbreviate | omitted the cover case and showed one Embodiment of the switch apparatus which has the movable contact unit for switches concerning this invention. 図１に示す本実施形態に係るスイッチ用可動接点ユニットを有するスイッチ装置の要部断面図である。It is principal part sectional drawing of the switch apparatus which has the movable contact unit for switches concerning this embodiment shown in FIG. 本実施形態に係るスイッチ用可動接点ユニットを有するスイッチ装置に備えられる可撓性シートの要部を示す平面図である。It is a top view which shows the principal part of the flexible sheet | seat with which the switch apparatus which has the movable contact unit for switches concerning this embodiment is equipped.

符号の説明Explanation of symbols

１ 基板
２ ＬＥＤ（光源）
２ａ 発光部
３ 操作キー
４ 蓋ケース
４ａ 開口
５ スイッチ用可動接点ユニット
６ 可撓性導光板
６ａ 側端面
６ｂ 照光部
６ｃ 入光部
７ 固定接点
８ コモン接点
９ 可動接点
１０ 可撓性シート
１０ａ 平滑面
１０ｂ 凹凸部
１１ スペーサシート
１２ 押圧用突起 1 substrate 2 LED (light source)
2a Light emitting unit 3 Operation key 4 Cover case 4a Opening 5 Switch movable contact unit 6 Flexible light guide plate 6a Side end surface 6b Illuminating unit 6c Light receiving unit 7 Fixed contact 8 Common contact 9 Movable contact 10 Flexible sheet 10a Smooth surface 10b Concavity and convexity 11 Spacer sheet 12 Protrusion for pressing

Claims (5)

光源及び複数の固定接点が配設された基板と、前記固定接点にそれぞれ接離可能な複数の可動接点を押圧可能な複数の操作キーとの間に介設され、
前記複数の可動接点が一面に保持される可撓性シートと、この可撓性シートの他面に積層され、側端面の一部で前記光源からの光が入射される入光部となし、かつ前記複数の操作キーのそれぞれの底面を臨む複数箇所に照光部を有する可撓性導光板と、前記可撓性シートの他面に形成され、前記複数の可動接点を個別に押圧可能な複数の押圧用突起とを含むスイッチ用可動接点ユニットであって、
前記押圧用突起を前記可撓性シートの他面の平滑面に形成し、
前記複数の押圧用突起を除く前記可撓性シートの他面部分に、微小な凹凸部を形成したことを特徴とするスイッチ用可動接点ユニット。 Interposed between a light source and a substrate on which a plurality of fixed contacts are disposed, and a plurality of operation keys capable of pressing a plurality of movable contacts that can be brought into and out of contact with the fixed contacts,
A flexible sheet in which the plurality of movable contacts are held on one surface, and a light incident portion that is laminated on the other surface of the flexible sheet and receives light from the light source at a part of the side end surface, And a flexible light guide plate having an illuminating portion at a plurality of positions facing the bottom surface of each of the plurality of operation keys, and a plurality of the plurality of movable contacts that can be individually pressed on the other surface of the flexible sheet. A switch movable contact unit including a pressing projection of
Forming the pressing protrusion on the smooth surface of the other surface of the flexible sheet;
A movable contact unit for a switch, wherein a minute uneven portion is formed on the other surface portion of the flexible sheet excluding the plurality of pressing protrusions. 前記請求項１記載のスイッチ用可動接点ユニットにおいて、
前記可撓性シートの他面に形成される前記平滑面は易接着処理層から成り、前記可撓性シートの他面に形成される前記微小な凹凸部は、前記易接着処理層をレーザーで除去することにより形成されたものから成ることを特徴とするスイッチ用可動接点ユニット。 The movable contact unit for a switch according to claim 1,
The smooth surface formed on the other surface of the flexible sheet is composed of an easy adhesion treatment layer, and the minute irregularities formed on the other surface of the flexible sheet are formed by using a laser to the easy adhesion treatment layer. A movable contact unit for a switch, characterized in that it is formed by removing. 前記請求項１記載のスイッチ用可動接点ユニットにおいて、
前記押圧用突起は、ディスペンサーまたは印刷によって形成されたものから成ることを特徴とするスイッチ用可動接点ユニット。 The movable contact unit for a switch according to claim 1,
The switch movable contact unit, wherein the pressing protrusion is formed by a dispenser or printing. 前記請求項１記載のスイッチ用可動接点ユニットにおいて、
前記可撓性シートの他面に形成される平滑面を、前記押圧用突起が形成される部分、及びこの押圧用突起が形成される部分の周囲に設けられる領域に形成し、この領域を除く前記可撓性シートの他面部分に、前記微小な凹凸部を形成したことを特徴とするスイッチ用可動接点ユニット。 The movable contact unit for a switch according to claim 1,
A smooth surface formed on the other surface of the flexible sheet is formed in a portion where the pressing protrusion is formed and a region provided around the portion where the pressing protrusion is formed, and this region is excluded. The movable contact unit for a switch, wherein the minute uneven portion is formed on the other surface portion of the flexible sheet. 光源及び複数の固定接点が配設された基板と、前記固定接点にそれぞれ接離可能な複数の可動接点を押圧可能な複数の操作キーとを備えるとともに、
前記複数の可動接点が一面に保持される可撓性シートと、この可撓性シートの他面に積層され、側端面の一部で前記光源からの光が入射される入光部となし、かつ前記複数の操作キーのそれぞれの底面を臨む複数箇所に照光部を有する可撓性導光板と、前記可撓性シートの他面に形成され、前記複数の可動接点を個別に押圧可能な複数の押圧用突起とを含むスイッチ用可動接点ユニットを備え、
このスイッチ用可動接点ユニットの前記可撓性導光板の前記入光部を、前記光源の発光部に近接した状態で対向させ、前記入光部から導入された光が前記照光部を介して前記操作キーの底面に投射されるように前記光源及び前記可撓性導光板を配置し、
前記押圧用突起を前記可撓性シートの他面の平滑面に形成し、
前記複数の押圧用突起を除く前記可撓性シートの他面部分に、微小な凹凸部を形成したことを特徴とするスイッチ用可動接点ユニットを有するスイッチ装置。 A substrate on which a light source and a plurality of fixed contacts are disposed, and a plurality of operation keys capable of pressing a plurality of movable contacts that can be brought into and out of contact with the fixed contacts, respectively.
A flexible sheet in which the plurality of movable contacts are held on one surface, and a light incident portion that is laminated on the other surface of the flexible sheet and receives light from the light source at a part of the side end surface, And a flexible light guide plate having an illuminating portion at a plurality of positions facing the bottom surface of each of the plurality of operation keys, and a plurality of the plurality of movable contacts that can be individually pressed on the other surface of the flexible sheet. A switch movable contact unit including a pressing projection of
The light incident part of the flexible light guide plate of the movable contact unit for the switch is opposed to the light emitting part of the light source, and light introduced from the light incident part passes through the illumination part. The light source and the flexible light guide plate are arranged so as to be projected onto the bottom surface of the operation key,
Forming the pressing protrusion on the smooth surface of the other surface of the flexible sheet;
A switch device having a switch movable contact unit, wherein a minute uneven portion is formed on the other surface portion of the flexible sheet excluding the plurality of pressing protrusions.
JP2008121209A 2008-05-07 2008-05-07 Switch movable contact unit and switch device having switch movable contact unit Active JP4477684B2 (en)

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JP2008121209A JP4477684B2 (en) 2008-05-07 2008-05-07 Switch movable contact unit and switch device having switch movable contact unit
TW098110913A TW201009865A (en) 2008-05-07 2009-04-01 Movable contact assembly for switch and switch apparatus having the same
CN2009101378346A CN101577188B (en) 2008-05-07 2009-04-29 Movable contact assembly for switch and switch apparatus having the same
KR1020090038673A KR101056975B1 (en) 2008-05-07 2009-05-01 Switch device having movable contact unit for switch and movable contact unit for switch

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JP2002056746A (en) * 2000-08-07 2002-02-22 Alps Electric Co Ltd Sheet having movable contact point and sheet switch
JP2003100170A (en) 2001-09-21 2003-04-04 Seiko Precision Inc Switch unit
JP4080271B2 (en) 2002-08-01 2008-04-23 シチズン電子株式会社 Light guide sheet and key switch incorporating the same
JP4951873B2 (en) 2005-04-14 2012-06-13 大日本印刷株式会社 Method for producing relief formed body
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JP2009272121A (en) 2009-11-19
CN101577188B (en) 2012-05-23

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