TW202240620A - Optical keyswitch - Google Patents
Optical keyswitch Download PDFInfo
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- TW202240620A TW202240620A TW110138214A TW110138214A TW202240620A TW 202240620 A TW202240620 A TW 202240620A TW 110138214 A TW110138214 A TW 110138214A TW 110138214 A TW110138214 A TW 110138214A TW 202240620 A TW202240620 A TW 202240620A
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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
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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
- H01H13/83—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 characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
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Abstract
Description
本發明一般係關於一種光開關按鍵,具體而言,本發明係關於一種按壓鍵帽使光訊號接收狀態變化而致動開關的光開關按鍵。The present invention generally relates to an optical switch key, and specifically, the present invention relates to an optical switch key for actuating a switch by pressing the key cap to change the receiving state of the optical signal.
薄膜開關按鍵及機械式按鍵為習知鍵盤常用的按鍵類型。薄膜開關按鍵及機械式按鍵主要的差異在於產生信號的電路結構不同。一般而言,薄膜開關按鍵是利用薄膜電路層作為信號產生的開關元件,當按壓鍵帽觸發薄膜電路層時,上電路層變形而使得上電路層的開關接點接觸下電路層之對應開關接點,進而使薄膜開關導通而產生信號。然而,薄膜電路層經過頻繁使用或在施力不當的情況下容易損壞,難以維修,且使用者按壓鍵帽觸發薄膜電路層時,缺乏鮮明的段差回饋,造成按壓的手感不佳,無法滿足使用者的操縱感。Membrane switch keys and mechanical keys are commonly used key types in conventional keyboards. The main difference between the membrane switch button and the mechanical button is that the circuit structure that generates the signal is different. Generally speaking, a membrane switch button uses a thin film circuit layer as a switch element for signal generation. When the keycap is pressed to trigger the thin film circuit layer, the upper circuit layer is deformed so that the switch contacts of the upper circuit layer contact the corresponding switch contacts of the lower circuit layer. point, and then the membrane switch is turned on to generate a signal. However, the thin-film circuit layer is easily damaged after frequent use or under the condition of improper force, and it is difficult to repair. Moreover, when the user presses the keycap to trigger the thin-film circuit layer, there is no clear step feedback, resulting in a poor pressing feel, which cannot meet the needs of use. the sense of manipulation.
機械式按鍵則是利用金屬片與金屬接點的導通與否作為信號產生的開關元件。然而,金屬片及金屬接點容易因撞擊磨損,影響按鍵的使用壽命,也會因水氣而造成金屬片或金屬接點腐鏽,使得導通不良,影響按鍵的穩定性。再者,習知機械式按鍵因為結構較複雜且體積較大,一般不適合應用於對薄型化要求較高的可攜式電子裝置,例如筆記型電腦。The mechanical key is to use the conduction or non-conduction between the metal sheet and the metal contact as a switching element for signal generation. However, metal sheets and metal contacts are easy to wear due to impact, which affects the service life of the buttons, and also causes corrosion of the metal sheets or metal contacts due to moisture, resulting in poor conduction and affecting the stability of the buttons. Furthermore, conventional mechanical buttons are not suitable for portable electronic devices such as notebook computers due to their complex structures and large volumes.
本發明之一目的在於提供一種光開關按鍵,其利用光發射器及光接收器構成的開關模組,並透過按鍵中的部件隨著按壓行程改變光訊號的接收狀態,提供快速又精確的觸發功能。One object of the present invention is to provide an optical switch key, which uses a switch module composed of an optical transmitter and an optical receiver, and changes the receiving state of the optical signal through the components in the key along with the pressing stroke to provide fast and accurate triggering Function.
本發明之另一目的在於提供一種光開關按鍵,其整合光開關於低矮空間的按鍵結構,以適合應用於可攜式電子裝置。Another object of the present invention is to provide an optical switch key, which integrates the key structure of the optical switch in a low space, so as to be suitable for application in portable electronic devices.
本發明之又一目的在於提供一種光開關按鍵,其包含光開關及機械式回復機構,不僅提供機械式按鍵的按壓手感,還增進維修可行性。Yet another object of the present invention is to provide an optical switch key, which includes an optical switch and a mechanical return mechanism, which not only provides the pressing feel of a mechanical key, but also improves maintenance feasibility.
於一實施例,本發明提供一種光開關按鍵,包含開關模組、鍵帽、支撐機構、彈性件以及背光光源與擋片。開關模組,具有電路板、光發射器及光接收器,電路板具有第一面以及第二面,光發射器與光接收器電連接電路板;其中光發射器對光接收器發射光訊號。鍵帽位於該第一面上方,該鍵帽具有一出光區,且該鍵帽於該電路板投影形成一鍵帽投影區。支撐機構設置於該鍵帽下方並支撐該鍵帽相對於該電路板上下移動;彈性件橫向地連接該支撐機構,並且將該鍵帽投影區分隔為一第一區及一第二區。擋片受該鍵帽或該支撐機構帶動而上下移動。背光光源電連接該電路板。背光光源位於該第一區以照明該鍵帽之該出光區,而該光發射器及該光接收器則位於該第二區,該擋片隨該鍵帽或該支撐機構移動而觸發該開關模組。In one embodiment, the present invention provides an optical switch key, including a switch module, a key cap, a supporting mechanism, an elastic member, a backlight source and a blocking plate. The switch module has a circuit board, an optical transmitter and an optical receiver, the circuit board has a first surface and a second surface, and the optical transmitter and the optical receiver are electrically connected to the circuit board; wherein the optical transmitter transmits an optical signal to the optical receiver . The key cap is located above the first surface, the key cap has a light emitting area, and the key cap is projected on the circuit board to form a key cap projection area. The support mechanism is arranged under the keycap and supports the keycap to move up and down relative to the circuit board; the elastic member connects the support mechanism transversely and divides the keycap projection area into a first area and a second area. Driven by the keycap or the support mechanism, the blocking piece moves up and down. The backlight source is electrically connected to the circuit board. The backlight light source is located in the first area to illuminate the light emitting area of the keycap, while the light emitter and the light receiver are located in the second area, and the shutter moves with the keycap or the support mechanism to trigger the switch mod.
於至少一實施例中,光源設置於第一面,且光發射器及光接收器位於第二面。In at least one embodiment, the light source is disposed on the first surface, and the light emitter and the light receiver are located on the second surface.
於至少一實施例中,電路板具有切槽,該擋片穿過該切槽而遮斷該光發射器及該光接收器間之光路。In at least one embodiment, the circuit board has a slot, and the blocker passes through the slot to block the light path between the light transmitter and the light receiver.
於另一實施例,本發明提供一種光開關按鍵,包含開關模組、鍵帽、支撐機構、彈性件、背光光源以及擋片。開關模組具有電路板與光開關,電路板具有第一面以及第二面,光開關電連接電路板;其中光開關包含光發射器及光接收器,光發射器對光接收器發射光訊號。鍵帽位於第一面上方,且該鍵帽於該電路板投影形成一鍵帽投影區。支撐機構支撐鍵帽相對於電路板上下移動。彈性件橫向地連接支撐機構,並且將鍵帽投影區分隔為第一區及第二區。背光光源電連接電路板。擋片受鍵帽或支撐機構帶動而上下移動,以於該鍵帽被按壓時觸發光開關。其中,光開關與背光光源位於第一面與第二面中的不同面,且光開關與背光光源位於第一區與第二區中的不同區。In another embodiment, the present invention provides an optical switch key, including a switch module, a key cap, a support mechanism, an elastic member, a backlight source, and a blocking plate. The switch module has a circuit board and an optical switch, the circuit board has a first surface and a second surface, and the optical switch is electrically connected to the circuit board; wherein the optical switch includes an optical transmitter and an optical receiver, and the optical transmitter transmits an optical signal to the optical receiver . The key cap is located above the first surface, and the key cap is projected on the circuit board to form a key cap projection area. The support mechanism supports the keycap to move up and down relative to the circuit board. The elastic member connects the supporting mechanism laterally, and divides the projection area of the key cap into a first area and a second area. The backlight light source is electrically connected to the circuit board. Driven by the keycap or the supporting mechanism, the blocking piece moves up and down, so as to trigger the optical switch when the keycap is pressed. Wherein, the optical switch and the backlight source are located on different surfaces of the first surface and the second surface, and the optical switch and the backlight source are located in different areas of the first area and the second area.
於至少一實施例中,支撐機構具有一第一支架及一第二支架,該第一支架與該第二支架可活動地連接於該電路板與該鍵帽之間。In at least one embodiment, the support mechanism has a first bracket and a second bracket, and the first bracket and the second bracket are movably connected between the circuit board and the keycap.
於至少一實施例中,第一支架與該第二支架分別包含一支架本體與至少一側臂部,該至少一側臂部延伸自該支架本體,該擋片設置於該至少一側臂部或該支架本體。In at least one embodiment, the first bracket and the second bracket respectively include a bracket body and at least one side arm, the at least one side arm extends from the bracket body, and the blocking plate is disposed on the at least one side arm or the bracket body.
於至少一實施例中,該擋片設置於該支撐機構之一第一支架及一第二支架其中之一,且該電路板具有一切槽、而該光開關位於該第二面,該擋片可穿過該切槽而遮擋該光訊號。In at least one embodiment, the baffle is arranged on one of the first bracket and the second bracket of the support mechanism, and the circuit board has a cutout, and the optical switch is located on the second surface, the baffle The light signal can be blocked through the slot.
於至少一實施例中,該光訊號沿一光路發射,該光路垂直於或平行於該彈性件。In at least one embodiment, the optical signal is emitted along an optical path, and the optical path is perpendicular to or parallel to the elastic member.
於至少一實施例中,該擋片平行或垂直於該彈性件。In at least one embodiment, the blocking piece is parallel to or perpendicular to the elastic member.
於至少一實施例中,該支撐機構更包含一底板,結合於該電路板之該第一面;其中,該底板具有對應於該第一區的一透光孔區域及對應於該第二區的一破孔區域,該背光光源對應於該透光孔區域,且該光開關之光路至少局部地暴露在該破孔區域。In at least one embodiment, the support mechanism further includes a bottom plate combined with the first surface of the circuit board; wherein, the bottom plate has a light hole area corresponding to the first area and a light hole area corresponding to the second area A hole area, the backlight source corresponds to the light hole area, and the optical path of the optical switch is at least partially exposed in the hole area.
於至少一實施例中,該鍵帽具有一擋片,該電路板具有一切槽,該擋片穿過該切槽而遮擋該光訊號。In at least one embodiment, the keycap has a block, the circuit board has a slot, and the block passes through the slot to block the optical signal.
於至少一實施例中,該背光光源向下發出光線,該電路板上設置至少一開孔供該光線通過而朝向該鍵帽照射。In at least one embodiment, the backlight emits light downwards, and at least one opening is set on the circuit board for the light to pass through and irradiate toward the keycap.
於至少一實施例中,光開關按鍵,更包含一反射片,對應於該背光光源設置,用以朝向該至少一開孔反射該光線。In at least one embodiment, the optical switch button further includes a reflective sheet disposed corresponding to the backlight light source for reflecting the light toward the at least one opening.
相較於習知技術,本發明之光開關按鍵利用光發射器及光接收器作為觸發開關,透過按鍵中任一合宜部件隨著按壓行程改變光訊號的接收狀態而達到快速、精確的按壓訊號的轉換,且可應用於各種按鍵架構以適用於可攜式電子裝置。再者,本發明的背光光源、光發射器與光接收器設置在電路板的不同側,並且也位於彈性件的不同側。電路板、彈性件對背光光源發出的照明光線產生遮擋作用,有效避免照明光線對光接收器產生干擾。Compared with the conventional technology, the optical switch key of the present invention uses the light emitter and the light receiver as the trigger switch, and achieves a fast and accurate pressing signal by changing the receiving state of the light signal through any suitable part of the key along with the pressing stroke conversion, and can be applied to various key structures to be suitable for portable electronic devices. Furthermore, the backlight light source, the light emitter and the light receiver of the present invention are disposed on different sides of the circuit board, and are also located on different sides of the elastic member. The circuit board and the elastic member have a shielding effect on the illumination light emitted by the backlight light source, effectively preventing the illumination light from interfering with the light receiver.
本發明提供一種光開關按鍵1,其可應用於任何按壓式輸入裝置(例如鍵盤),或整合於任何合宜的電子裝置(例如可攜式電子裝置的按鍵或筆記型電腦的鍵盤),以提供快速又精確的觸發功能、並適用於多種按鍵結構設計,且增進維修可行性。於後參考圖式,詳細說明本發明實施例之光開關按鍵1各元件之結構及操作。The present invention provides an
如圖1、圖2以及圖3所示,為本發明第一實施例所揭露的光開關按鍵1,包含開關模組607、鍵帽604、支撐機構、彈性件605以及背光光源643。As shown in FIG. 1 , FIG. 2 and FIG. 3 , the
如圖1、圖2以及圖3所示,開關模組607具有電路板644、光發射器641及光接收器642,光發射器641及光接收器642分別電連接電路板644、並組成一光開關。本發明不同實施例之開關模組607至少包括電路板644與電連接於電路板644的光開關,然本發明之光開關並不以光發射器641及光接收器642為限,整合一體的光收發器也可透過折射或反射的光路實現光開關功能。電路板644具有第一面644a以及第二面644b,且光發射器641及光接收器642電連接於電路板644。光發射器641對應地對光接收器642發射光訊號,使光接收器642接收光訊號而得到一強度。當鍵帽604未被按壓時,光接收器642接收光訊號的強度為第一強度;當鍵帽被按壓604時,鍵帽604帶動支撐機構移動,鍵帽604或支撐機構遮擋光訊號,使得光接收器642接收到的光訊號強度降低為第二強度。按壓鍵帽604改變光接收器642接收光訊號的強度,而使開關模組607被觸發產生觸發訊號。As shown in Figure 1, Figure 2 and Figure 3, the
如圖1、圖2以及圖3所示,鍵帽604透過支撐機構的支撐而位於第一面644a上方,鍵帽604上具有出光區604b。出光區604b可以是鍵帽604的鏤空區域,並且鏤空區域中可填充或不填充透光材料。或,鍵帽604由透光材料製作,並塗佈不透光的塗料,並且保留出光區604b不進行塗佈。圖中所示的出光區604b雖為塊狀區域,但實際上可以是呈現字符型態的可透光區域,以呈現鍵帽604對應的字符。鍵帽604於電路板644投影形成鍵帽投影區604a(涵蓋第一面644a與第二面644b)。支撐機構設置於鍵帽604下方並支撐鍵帽604相對於電路板644上/下移動。支撐機構具有第一支架601及第二支架602。如果不設置整片底板603,連接件631、632可直接固定在電路板644,那麼第一支架601與第二支架602的底板端6012及6022可活動地連接於電路板644上的連接件631、632,且第一支架601與第二支架602的鍵帽端6014及6024可活動地連接於鍵帽604。As shown in FIG. 1 , FIG. 2 and FIG. 3 , the
如圖1、圖2以及圖3所示,具體而言,鍵帽604可為例如射出成型的矩形鍵帽604,且鍵帽604下表面具有耦接支撐機構的耦接件6042、6044。耦接件6042可為具有軸孔的耦接結構,而耦接件6044可為具有滑槽的耦接結構;或是耦接件6042、6044都是具有滑槽的耦接結構。第一支架601與第二支架602的鍵帽端6014及6024分別可轉動地連接鍵帽604的耦接件6042、6044,並且至少一鍵帽端6014及6024可相對於對應的耦接件6042、6044滑動,使得第一支架601與第二支架602的另一端可活動地連接於鍵帽604。As shown in FIG. 1 , FIG. 2 and FIG. 3 , specifically, the
如圖1以及圖2所示,支撐機構更包含底板603,底板603具有連接件631、632。底板603結合於電路板644的第一面644a,並且連接件631、632朝向遠離電路板644的方向突出。連接件631、632較佳為自底板603表面朝鍵帽604突起的卡勾式連接件。第一支架601與第二支架602的底板端6012及6014分別可活動地連接底板603的連接件631、632,使得第一支架601與第二支架602的底板端6012及6022間接地連接於電路板644。本發明中不排除省略底板603,而以底板端6012、6022直接地樞接於電路板644。此外,第一支架601與第二支架602也可以交叉配置並且互相樞接,而配置為剪刀結構的形態。As shown in FIG. 1 and FIG. 2 , the support mechanism further includes a
如圖1、圖2以及圖4所示,彈性件605橫向地沿一連接方向連接支撐機構,並且彈性件605之正投影將鍵帽投影區604a分隔為第一區604a1及第二區604a2。在至少一實施例中,彈性件605是拉伸彈簧,沿連接方向X連接第一支架601及第二支架602。第一支架601與第二支架602分別包含支架本體613、623與側臂部611、612、621、622。在第一支架601或第二支架602中,側臂部611、612延伸於支架本體613,並且可活動地連接於電路板644。支架本體613、623垂直於彈性件605的連接方向X,並且彈性件605連接於二支架本體613、623,而常態地對二支架本體613、623提供拉力使二支架本體613、623互相接近,形成向上推動鍵帽604的恢復力。As shown in FIG. 1 , FIG. 2 and FIG. 4 , the
如圖1與圖4所示,背光光源643電連接電路板644,用於朝向鍵帽604投射照明光線。光開關與背光光源643位於第一面644a與644b第二面中的不同,同時光開關與背光光源643位於第一區604a1與第二區604a2中的不同區。具體而言於本實施例中,背光光源643位於第一區604a1,以照明鍵帽604的出光區604b。光發射器641及光接收器642位於第二區604a2,並隨鍵帽604或支撐機構移動而觸發開關模組607。由於第一區604a1與第二區604a2大致上是被彈性件605分隔,彈性件605的阻隔與反射可以降低照明光線在第二區604a2的強度,因此可以降低照明光線對光接收器642的干擾。前述異面設置與異區設置也使照明光線需要較長距離才到達光開關,或經鍵帽604、彈性件605、底板603與電路板644的多次反射或遮擋,耗損照明光線的強度,減少背光光源643對光開關的干擾,提供光開關觸發的準確性。As shown in FIG. 1 and FIG. 4 , the
參閱圖1至圖4所示,第一支架601及第二支架602其中之一具有擋片650,擋片650朝向電路板644延伸。電路板644具有切槽645,且光發射器641及光接收器642分別設置於切槽645的兩側。如圖所示,擋片650設置於支架本體613、623其中之一,並且擋片650平行於切槽645,藉以移動穿過切槽645。本發明中擋片650不一定在向下移動時穿過切槽645而遮斷光開關之光路;相反地,有可能在鍵帽604按壓時,擋片650位置是從遮斷光訊號及光路、移至允許光訊號及光路導通,例如將擋片650設置在第一支架601或第二支架602的底板端6012及6022附近(不論在第一支架601及第二支架602採正V或倒V設置時)。本發明中擋片650不一定在移動全程都對合於切槽645;當擋片650移動軌跡非垂直於切槽645時(例如弧線軌跡),擋片650可能移動至最高或最低點才對合並穿過切槽645。Referring to FIGS. 1 to 4 , one of the
參閱圖5以及圖6,圖中第一支架601與第二支架602省略以簡化視圖。當鍵帽604被按壓,第一支架601及第二支架602(圖中未示出)擺動,而帶動擋片650穿過切槽645而遮擋光訊號,降低光接收器642接收光訊號的強度,使開關模組607被觸發而產生觸發訊號。具體而言,在第一實施例中,光訊號沿光路發射,光路垂直於彈性件605的連接方向X;同時,切槽645與擋片650都是平行於連接方向X。Referring to FIG. 5 and FIG. 6 , the
如圖1、圖4、圖5與圖6所示,在第一實施例中,背光光源643設置於第一面644a,且光發射器641及光接收器642(整組光開關)位於第二面644b,藉以進一步透過電路板644阻隔背光光源643的照明光線,降低照明光線對光接收器642的干擾。此外,由於底板603結合於第一面644a,為了避免底板603干涉光發射器641、光接收器642與背光光源643,底板603具有透光孔區域603a及破孔區域603b,透光孔區域603a及破孔區域603b分別對應於第一區604a1與第二區604a2,且透光孔區域603a與第一區604a1至少部分地重疊,而破孔區域603b與第二區604a2至少部分地重疊。光開關(光發射器641及光接收器642)之光路,至少局部地暴露在底板604的破孔區域603b和電路板644的切槽64。如圖所示,透光孔區域603a及破孔區域603b可以開設成大孔洞,使得其在電路板644的投影面積大於背光光源643與切槽645,確保背光光源643與切槽645分別落在透光孔區域603a及破孔區域603b之中。於不同實施例中,透光孔區域603a及破孔區域603b也可以完全匹配或略大於背光光源643與切槽645之外廓,使得其在電路板644的投影大於且重合於背光光源643與切槽645的投影。透光孔區域603a及破孔區域603b也可以合併為單一大孔洞區域,同時容納背光光源643與切槽64。背光光源643位於透光孔區域603a,且光發射器641與光接收器642位於破孔區域603b。因此,背光光源643、光發射器641及光接收器642的設置,或者是光線的發射接收就不會受到底板603干涉。本發明各實施例之底板603與電路板644都可以具有遮蔽背光光源643之光線的效果;雖然一般而言光源643產生可見光,而光開關(光發射器641與光接收器642)採用紅外光,但是光接收器642的接收頻譜可能涵蓋局部的可見光,因此有必要將光源643與整組光開關設置在電路板644的不同面、或鍵盤投影區的不同區,以便降低光源643或環境光源對光開關的干擾。As shown in Figure 1, Figure 4, Figure 5 and Figure 6, in the first embodiment, the
參閱圖5、圖6以及圖7所示,為了進一步降低照明光線對光接收器642的干擾,同時加強背光光源643對鍵帽604的照明效果,光開關按鍵1還包含擴散片661。擴散片661結合於底板603且設置於第一區604a1。擴散片661覆蓋背光光源643,並且位於背光光源643與鍵帽604之間。背光光源643發出的照明光線,可通過擴散片661而被大範圍地照射於鍵帽604的內側面。此外,用於設置擴散片661的側牆661a可以採用遮光材料製作,提供遮光效果,減少水平方向出光,進而避免照明光線干擾光接收器642接收光訊號。Referring to FIG. 5 , FIG. 6 and FIG. 7 , in order to further reduce the interference of the illuminating light on the
參閱圖8與圖9所示,為本發明第二實施例所揭露的開關模組607,用於置換本發明一或多個實施例中的開關模組607。開關模組607包含電路板644、光發射器641與光接收器642。Referring to FIG. 8 and FIG. 9 , the
如圖8與圖9所示,開關模組607還包含反射片660與間隔件662。背光光源643設置於第二面644b。電路板644上設置開孔646,鄰近背光光源643,並且開孔646重疊於底板603的透光孔區域603a。間隔件662設置於第二面644b,並且反射片660結合於間隔件662,使得反射片660對應於第二面644b設置,並且重疊於開孔646。反射片660與第二面644b之間保持間隔距離,背光光源643位於反射片660與第二面644b之間。反射片660的反射面朝向第二面644b,並且背光光源643朝向遠離第二面644b的方向,亦即朝向反射片660投射照明光線(向下照射)。因此,反射片660朝向開孔646反射照明光線,使照明光線通過開孔646照射於鍵帽604。在此實施例中,光發射器641與光接收器642設置在第一面644a,且仍位於切槽645的兩側。切槽645的配置可以避免底板603干涉擋片650,使得擋片650有足夠的移動行程可以遮斷光訊號的光路。由於光發射器641與光接收器642設置在第一面644a,因此可以有效降低背光光源643對光接收器642的干擾。此外,設置於第二面644b的背光光源643,可以通過開孔646大小來來調整對鍵帽604的照明強度,以避免照明強度過大。As shown in FIG. 8 and FIG. 9 , the
參閱圖10以及圖11所示,是本發明第三實施例所揭露的一種光開關按鍵1。光開關按鍵1包含開關模組607、鍵帽604、支撐機構、彈性件605以及背光光源643。Referring to FIG. 10 and FIG. 11 , it is an
在第三實施例中,擋片650設置於第一支架601與第二支架602其中之一的側臂部611,且擋片650朝向電路板644延伸。如圖10與圖11所示,擋片650與切槽645平行於彈性件605的連接方向X,且光訊號的光路仍垂直於連接方向X配置。當鍵帽604被按壓,側臂部611、612、621、622向下擺動而帶動擋片650移動穿過切槽645並遮擋於光發射器641與光接收器642之間,擋片650至少局部地遮擋光訊號,以降低光接收器642接收光訊號的強度,從而觸發開關模組607產生觸發訊號。In the third embodiment, the blocking
參閱圖12以及圖13所示,是本發明第四實施例所揭露的一種光開關按鍵1。光開關按鍵1包含開關模組607、鍵帽604、支撐機構、彈性件605以及背光光源643。Referring to FIG. 12 and FIG. 13 , it is an
在第四實施例中,擋片650設置於第一支架601與第二支架602其中之一的支架本體623,且擋片650朝向電路板644延伸。如圖12與圖13所示,擋片650與切槽645垂直於彈性件605的連接方向X,且光訊號的光路平行於連接方向X配置。當鍵帽604被按壓,側臂部611、612、621、622向下擺動而帶動擋片650移動穿過切槽645並遮擋於光發射器641與光接收器642之間,擋片650至少局部地遮擋光訊號,以降低光接收器642接收光訊號的強度,從而觸發開關模組607產生觸發訊號。In the fourth embodiment, the blocking
參閱圖14以及圖15所示,是本發明第五實施例所揭露的一種光開關按鍵1。光開關按鍵1包含開關模組607、鍵帽604、支撐機構(圖未示)、彈性件605以及背光光源643。Referring to FIG. 14 and FIG. 15 , it is an
如圖14以及圖15所示,在第五實施例中,支撐機構的第一支架601與第二支架602(圖未示)不配置擋片650。擋片650配置於鍵帽604的底部並朝向電路板644延伸。當鍵帽604被按壓,鍵帽604帶動擋片650直線移動,擋片650移動穿過切槽645並遮擋於光發射器641與光接收器642之間,擋片650至少局部地遮擋光訊號,以降低光接收器642接收光訊號的強度,從而觸發開關模組607產生觸發訊號。在第六實施例中,由鍵帽604帶動的擋片650是直線移動,因而擋片650與切槽645之間的對位相對容易解決。於圖式中,擋片650是平行於彈性件605的連接方向X,而光訊號的光路垂直於連接方向X;但不排除擋片650是垂直於彈性件605的連接方向X,而光訊號的光路垂平行於連接方向X。As shown in FIG. 14 and FIG. 15 , in the fifth embodiment, the
相較於習知技術,本發明之光開關按鍵1利用光發射器641及光接收器642作為開關訊號,透過按鍵中任一合宜部件隨著按壓行程改變光訊號的接收狀態而達到快速、精確的按壓訊號的轉換,且可應用於各種按鍵架構以適用於可攜式電子裝置。再者,本發明的背光光源643、光發射器641與光接收器642設置在電路板644的不同側,並且也位於彈性件605的不同側。電路板644、彈性件605對背光光源643發出的照明光線產生遮擋作用,有效避免照明光線對光接收器642產生干擾。Compared with the conventional technology, the
本發明已由上述實施例加以描述,然而上述實施例僅為例示目的而非用於限制。熟此技藝者當知在不悖離本發明精神下,於此特別說明的實施例可有例示實施例的其他修改。因此,本發明範疇亦涵蓋此類修改且僅由所附申請專利範圍限制。The present invention has been described by the above embodiments, however, the above embodiments are only for the purpose of illustration and not for limitation. Those skilled in the art will appreciate that other modifications of the illustrated embodiments can be made to the embodiments specifically described herein without departing from the spirit of the invention. Accordingly, the scope of the present invention also covers such modifications and is limited only by the appended claims.
1:光開關按鍵
601:第一支架
6012、6022:底板端
6014、6024:鍵帽端
613、623:支架本體
611、612、621、622:側臂部
602:第二支架
604:鍵帽
6042、6044:耦接件
603:底板
603a:透光孔區域
603b:破孔區域604鍵帽
604a:鍵帽投影區
604a1:第一區
604a2:第二區
604b:出光區
605:彈性件
607:開關模組
631、632:連接件
641:光發射器
642:光接收器
643:背光光源
644:電路板
644a:第一面
644b:第二面
645:切槽
646:開孔
650:擋片
660:反射片
661:擴散片
661a:側牆
662:間隔件
X:連接方向
1: Optical switch button
601: The
圖1是本發明第一實施例之光開關按鍵的分解圖。 圖2是本發明第一實施例之光開關按鍵的側視圖。 圖3是本發明第一實施例中,鍵帽、支撐機構以及彈性件的分解圖。 圖4是本發明實施例中,鍵帽投影區的俯視圖。 圖5及圖6是本發明第一實施例之光開關按鍵的剖視圖。 圖7是本發明第一實施例之光開關按鍵的俯視圖,圖中省略鍵帽。 圖8是本發明第二實施例之部分元件分解圖。 圖9是本發明第二實施例之光開關按鍵的剖視圖。 圖10是本發明第三實施例之光開關按鍵的分解圖。 圖11是本發明第三實施例之光開關按鍵的俯視圖,圖中省略鍵帽。 圖12是本發明第四實施例之光開關按鍵的分解圖。 圖13是本發明第四實施例之光開關按鍵的俯視圖,圖中省略鍵帽。 圖14及圖15是本發明第五實施例之光開關按鍵的剖視圖。 FIG. 1 is an exploded view of an optical switch key according to the first embodiment of the present invention. Fig. 2 is a side view of the optical switch key according to the first embodiment of the present invention. Fig. 3 is an exploded view of a keycap, a supporting mechanism and an elastic member in the first embodiment of the present invention. Fig. 4 is a top view of the projection area of the keycap in the embodiment of the present invention. 5 and 6 are cross-sectional views of the optical switch key according to the first embodiment of the present invention. Fig. 7 is a top view of the optical switch key according to the first embodiment of the present invention, and the key cap is omitted in the figure. FIG. 8 is an exploded view of some components of the second embodiment of the present invention. 9 is a cross-sectional view of an optical switch key according to a second embodiment of the present invention. Fig. 10 is an exploded view of the optical switch key according to the third embodiment of the present invention. Fig. 11 is a top view of the optical switch key according to the third embodiment of the present invention, and the key cap is omitted in the figure. Fig. 12 is an exploded view of an optical switch key according to a fourth embodiment of the present invention. Fig. 13 is a top view of the optical switch key according to the fourth embodiment of the present invention, and the key cap is omitted in the figure. 14 and 15 are cross-sectional views of an optical switch key according to a fifth embodiment of the present invention.
無none
1:光開關按鍵 1: Optical switch button
601:第一支架 601: The first bracket
6012、6022:底板端 6012, 6022: bottom plate end
6014、6024:鍵帽端 6014, 6024: key cap end
613、623:支架本體 613, 623: bracket body
611、612、621、622:側臂部 611, 612, 621, 622: side arm
602:第二支架 602: second bracket
603:底板 603: Bottom plate
603a:透光孔區域 603a: light hole area
603b:破孔區域 603b: Perforated area
604:鍵帽 604: keycap
604a:鍵帽投影區 604a: Keycap projection area
604b:出光區 604b: light exit area
605:彈性件 605: Elastic parts
607:開關模組 607: switch module
631、632:連接件 631, 632: connectors
641:光發射器 641: Optical Transmitter
642:光接收器 642:Optical receiver
643:背光光源 643: Backlight light source
644:電路板 644: circuit board
644a:第一面 644a: first side
644b:第二面 644b: Second side
645:切槽 645: Grooving
650:擋片 650: block
Claims (13)
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US9971084B2 (en) * | 2015-09-28 | 2018-05-15 | Apple Inc. | Illumination structure for uniform illumination of keys |
TWI662572B (en) * | 2018-01-05 | 2019-06-11 | 達方電子股份有限公司 | Optical keyswitch |
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2021
- 2021-07-21 CN CN202110824510.0A patent/CN115206716A/en active Pending
- 2021-10-14 TW TW110138214A patent/TWI811813B/en active
- 2021-10-18 CN CN202122499837.3U patent/CN217061859U/en active Active
Also Published As
Publication number | Publication date |
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CN115206716A (en) | 2022-10-18 |
CN217061859U (en) | 2022-07-26 |
TWI811813B (en) | 2023-08-11 |
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