WO2017219383A1 - 光电键盘开关及机械键盘 - Google Patents

光电键盘开关及机械键盘 Download PDF

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Publication number
WO2017219383A1
WO2017219383A1 PCT/CN2016/087835 CN2016087835W WO2017219383A1 WO 2017219383 A1 WO2017219383 A1 WO 2017219383A1 CN 2016087835 W CN2016087835 W CN 2016087835W WO 2017219383 A1 WO2017219383 A1 WO 2017219383A1
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WO
WIPO (PCT)
Prior art keywords
light
pressing shaft
striker
cavity
housing
Prior art date
Application number
PCT/CN2016/087835
Other languages
English (en)
French (fr)
Inventor
刘芳隆
Original Assignee
深圳市煌兆铭科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市煌兆铭科技有限公司 filed Critical 深圳市煌兆铭科技有限公司
Publication of WO2017219383A1 publication Critical patent/WO2017219383A1/zh

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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
    • H01H13/83—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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/06—Reflector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor

Definitions

  • the invention relates to the technical field of computer accessories, in particular to an optical keyboard switch and a mechanical keyboard using the photoelectric keyboard switch.
  • a photoelectric switch is a device that uses an object to block or reflect a light beam, change the light receiving state of the photoelectric sensor, and thereby turn on or off the circuit. Because photoelectric switches have the advantages of fast response, they are very popular among market consumers.
  • the existing photoelectric switch usually has a plurality of light-emitting devices, wherein a part of the light-emitting device is used for illumination of the photoelectric switch, and another part is used for signal input of the photoelectric switch, so that the overall structure of the photoelectric switch is complicated and the cost is high.
  • a primary object of the present invention is to provide an optoelectronic keyboard switch that is intended to simplify the structure of an opto-electronic keyboard switch, reduce cost, and improve accuracy.
  • the photoelectric keyboard switch of the present invention comprises a PCB board, a hollow casing, and a pressing shaft, and the pressing shaft portion is received in the casing and moves up and down in the casing, the casing
  • the PCB is detachably connected to the PCB, and the PCB is further electrically connected to the light emitting element and the light receiving element, and the light emitting element and the light receiving element are oppositely disposed on opposite sides of the pressing shaft, a side of the housing adjacent to the light emitting element is provided with a light reflecting portion and a light guiding column is fixed, and a part of the light emitted from the light emitting element is emitted from the light guide column through the light guide column, and another part of the light is reflected by the light.
  • the light is reflected toward the light receiving element, and the pressing shaft is formed with a light transmission hole, and when the pressing shaft is in a pressed state, the light reflected by the light reflecting portion passes through the light transmission hole to be
  • the light receiving element receives, when the pressing shaft is in a non-depressed state, the light reflected by the reflecting portion is blocked by the pressing shaft.
  • the photoelectric keyboard switch is further provided with a collecting lens on a propagation path of the light reflected by the reflecting portion, and the collecting lens is connected to a lower end of the light guiding column.
  • one of the housing or the pressing shaft has a chute, the other of which has a slide rail into which the slide rail is snapped.
  • the housing is formed with a first cavity and a second cavity, wherein the pressing shaft portion is received in the first cavity, and the light guiding column is received in the second volume In the cavity, the light reflecting portion is formed on a cavity wall of the second cavity.
  • the light emitting element and the light receiving element are both fixed on an upper surface of the PCB board and located in a space surrounded by the first cavity and the second cavity.
  • the lower end of the pressing shaft is provided with a mounting slot
  • the photoelectric keyboard switch further includes a striker and a first elastic member sleeved on the striker, and the upper end of the striker and the first elastic member extend into the upper end
  • the bottom of the first cavity is provided with a frame, the lower end of the striker is limited to the frame, and the lower end of the first elastic member abuts the upper end of the frame.
  • the lower end of the striker has a finite slot
  • the photoelectric keyboard switch further includes a second elastic member, the second elastic member abuts against the slot wall of the limiting slot, and the other end abuts the first a bottom wall of the cavity
  • the lower side wall of the striker is further provided with a bump
  • the side wall of the frame is provided with a slideway
  • the slideway is provided with a guide slope
  • the protrusion is inserted into the slide
  • the upper end of the striker is provided with an abutting portion
  • the pressing shaft is provided with two ejector pins at intervals in the mounting groove.
  • the end portion of the abutting portion is The end of the jack abuts, when the pressing shaft is in a pressing state, the bump slides along the guiding slope of the slide and drives the striker to rotate, and the abutting portion of the striker is separated from the two The end of the ram is inserted into the vacancy between the two rams and strikes the top wall of the mounting groove.
  • the end portions of the two ejector pins are respectively formed with a first abutting slope surface, and the two ends of the end portion of the abutting portion are formed with a second abutting slope surface that cooperates with the first abutting slope surface.
  • the first abutting slope is in contact with the second abutting slope when the pressing shaft is in a non-pressing state.
  • the side wall of the casing is formed with a buckle
  • the PCB board is provided with a mounting opening
  • the casing is disposed through the mounting opening and the body is fastened to the PCB board by the buckle.
  • the invention also provides a mechanical keyboard comprising a plurality of photoelectric keyboard switches, the photoelectric keyboard switch comprising a PCB board, a hollow casing, and a pressing shaft, the pressing shaft portion being received in the casing and in the casing
  • the housing is detachably connected to the PCB, and the PCB is electrically connected to the light emitting component and the light receiving component, and the light emitting component and the light receiving component are oppositely disposed on the press
  • a side of the housing adjacent to the light emitting element is provided with a light reflecting portion and a light guiding column is fixed, and a part of the light emitted from the light emitting element is reflected out of the housing by the light guiding rod.
  • Another portion of the light is reflected by the light reflecting portion and is incident on the light receiving element, and the pressing shaft is formed with a light transmitting hole, and when the pressing shaft is in a pressed state, the light reflected by the reflecting portion passes through the light The light-transmitting hole is received by the light-receiving element, and when the pressing shaft is in a non-depressed state, the light reflected by the light-reflecting portion is blocked by the pressing shaft.
  • the photoelectric keyboard switch is further provided with a collecting lens on a propagation path of the light reflected by the reflecting portion, and the collecting lens is connected to a lower end of the light guiding column.
  • one of the housing or the pressing shaft has a chute, the other of which has a slide rail into which the slide rail is snapped.
  • the housing is formed with a first cavity and a second cavity, wherein the pressing shaft portion is received in the first cavity, and the light guiding column is received in the second volume In the cavity, the light reflecting portion is formed on a cavity wall of the second cavity.
  • the lower end of the pressing shaft is provided with a mounting slot
  • the photoelectric keyboard switch further includes a striker and a first elastic member sleeved on the striker, and the upper end of the striker and the first elastic member extend into the upper end
  • the bottom of the first cavity is provided with a frame, the lower end of the striker is limited to the frame, and the lower end of the first elastic member abuts the upper end of the frame.
  • the lower end of the striker has a finite slot
  • the photoelectric keyboard switch further includes a second elastic member, the second elastic member abuts against the slot wall of the limiting slot, and the other end abuts the first a bottom wall of the cavity
  • the lower side wall of the striker is further provided with a bump
  • the side wall of the frame is provided with a slideway
  • the slideway is provided with a guide slope
  • the protrusion is inserted into the slide
  • the upper end of the striker is provided with an abutting portion
  • the pressing shaft is provided with two ejector pins at intervals in the mounting groove.
  • the end portion of the abutting portion is The end of the jack abuts, when the pressing shaft is in a pressing state, the bump slides along the guiding slope of the slide and drives the striker to rotate, and the abutting portion of the striker is separated from the two The end of the ram is inserted into the vacancy between the two rams and strikes the top wall of the mounting groove.
  • a light reflecting portion and a light guiding column are disposed in the casing, and a part of the light emitted from the light emitting element is transmitted through the light guiding column and transmitted out of the casing for illumination of the keyboard, and another part of the light passes through the reflecting portion disposed on the casing.
  • the pressing shaft is in the pressed state, the light reflected by the reflecting portion passes through the light transmitting hole opened in the pressing shaft and is received by the light receiving element, thereby realizing the signal input of the photoelectric keyboard switch.
  • the photoelectric keyboard switch of the invention realizes keyboard illumination and signal input through a light source, has a simple structure, low cost, high precision and long service life.
  • FIG. 1 is a schematic structural view of an embodiment of an optical keyboard switch according to the present invention.
  • Figure 2 is a cross-sectional structural view of the A-A of Figure 1;
  • FIG. 3 is a schematic exploded view of the photoelectric keyboard switch of FIG. 1;
  • FIG. 4 is a schematic exploded view of another perspective of the photoelectric keyboard switch of FIG. 1;
  • Figure 5 is a schematic structural view of a housing of the photoelectric keyboard switch of the present invention.
  • FIG. 6 is a schematic structural view of another perspective view of a housing of the photoelectric keyboard switch of the present invention.
  • FIG. 7 is a schematic structural view of a pressing shaft of the photoelectric keyboard switch of the present invention.
  • FIG. 8 is a schematic structural view of another perspective view of a pressing shaft of the photoelectric keyboard switch of the present invention.
  • FIG. 9 is a schematic structural view of a striker of the photoelectric keyboard switch of the present invention.
  • Fig. 10 is a structural schematic view showing another perspective of a striker of the photoelectric keyboard switch of the present invention.
  • Label name Label name 10 case twenty four Barb 11 First cavity 30
  • Light emitting element 12 Second cavity 40
  • Light receiving element 13 Reflective department 50
  • Light guide column 14 framework Condenser lens 141 slide 60 firing pin 142 Guided slope 61 Abutment 143 Step hole 611 Second abutting slope 15 Buckle 62 Limit slot 151 Through hole 63 Bump 16 Positioning column 70 First elastic member 17 Card slot 80 Second elastic member 20 Pressing the shaft 90 PCB board twenty one Light transmission hole 91 Mounting port twenty two Mounting slot 92 Gap twenty three Pole 93 Docking station 231 First abutment slope 94 Limit port
  • first, second, and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.
  • the invention provides an optical keyboard switch.
  • the photoelectric keyboard switch comprises a PCB board 90, a hollow casing 10, and a pressing shaft 20, and the pressing shaft 20 is partially received in the casing 10 and
  • the housing 10 is moved up and down, and the housing 10 is detachably connected to the PCB board.
  • the PCB board is also electrically connected to the light emitting element 30 and the light receiving element 40.
  • the light emitting element 30 and the light receiving element 40 are oppositely disposed on the pressing shaft 20.
  • the side of the housing 10 adjacent to the light-emitting element 30 is provided with a light-reflecting portion 13 and a light-guiding column 50 is fixed.
  • a part of the light emitted from the light-emitting element 30 is emitted from the light guide column 50 through the housing 10, and the other portion of the light passes through the light-reflecting portion. 13 is reflected and incident on the light receiving element 40, and the pressing shaft 20 is formed with the light transmitting hole 21, and when the pressing shaft 20 is in the pressed state, the light reflected by the reflecting portion 13 passes through the light transmitting hole 21 and is received by the light receiving element 40. When the pressing shaft 20 is in the non-depressed state, the light reflected by the reflecting portion 13 is blocked by the pressing shaft 20.
  • the housing 10 can be produced by integral injection molding using optical grade acryl or plastic material.
  • the light reflecting portion 13 may be a part of the structure of the casing 10 itself. After the two-color injection molding of the casing 10 is completed, the shell wall of the casing 10 corresponding to the light reflecting portion 13 may be surface-treated to form a high gloss surface to light. Part of the light emitted from the emitting element 30 is reflected to the light receiving element 40.
  • the light reflecting portion 13 may also be a separate component from the housing 10, which may be a separately disposed plexiglass lens or other reflective component, and after the injection molding of the housing 10 is completed, the reflective portion 13 is attached to the shell by gluing. On the side wall of the body 10.
  • the light reflecting portion 13 of the present embodiment is preferably integrally formed with the casing 10, and the reflecting portion 13 is formed by surface processing using the material of the casing 10 to save production cost.
  • the light reflecting portion 13 may have a curved shape which has a certain light collecting effect when a part of the light emitted from the light emitting element 30 is reflected to the light receiving element 40.
  • the light guiding rod 50 may be made of a transparent PC material, and the upper end of the light guiding rod 50 is transmitted through the casing 10 to conduct a part of the light emitted from the light emitting element 30 out of the casing 10.
  • the pressing shaft 20 can be produced by injection molding using a plastic of non-transparent material, and the pressing shaft 20 can pass through a portion of the housing 10 to which a button cap (not shown) can be connected, and the light transmitted upward through the light guiding column 50 can be Realizing the lighting of the keys, such as illuminating the letter marks on the keycaps, illuminating the gap between adjacent keys, which is convenient for people to use, and also increases the beauty of the keyboard with the photoelectric keyboard switch.
  • the pressing shaft 20 has a light-transmissive hole 21 extending through the main body thereof.
  • the opening shape of the light-transmitting hole 21 may be a circular shape, a square shape or another polygonal shape.
  • the light-reflecting path reflected by the light-reflecting portion 13 of the embodiment is located at a horizontal plane.
  • the axis of the light hole 21 is also a straight line in the horizontal plane.
  • the axis of the light transmitting hole 21 coincides with the propagation path of the light reflected by the light reflecting portion 13, the light receiving element 40 can receive the light emitted from the light emitting element 30, and the switch realizes signal input.
  • the light emitting element 30 of this embodiment may be an LED lamp (such as a monochrome LED lamp, a two-color LED lamp, or an RGB three-color LED lamp).
  • the light receiving component 40 can be an infrared receiving tube, that is, the light receiving component 40 can realize the switching signal input by receiving the invisible light.
  • at least two light emitting chips can be attached to the LED light of the light reflecting component, and one of the light emitting chips emits visible light for use.
  • the illumination of the keyboard, and the other can emit invisible light (such as infrared rays) to the light receiving element 40 to realize the signal input of the switch.
  • the light receiving component 40 of the present embodiment can also adopt a structure similar to the photosensitive receiving tube, and can receive the full-band light emitted by the light emitting component 30 to realize the signal input of the switch.
  • a part of the light emitted from the light-emitting element 30 is transmitted through the light guide column 50 and transmitted through the light guide column 50 to transmit the illumination of the keyboard, and the other part of the light passes through the light-reflecting portion 13 and the light-guiding column 50.
  • the light reflecting portion 13 provided on the casing 10 is reflected.
  • the pressing shaft 20 is in the pressed state, the light reflected by the reflecting portion 13 passes through the light transmitting hole 21 opened in the pressing shaft 20 and is received by the light receiving element 40, thereby realizing photoelectricity.
  • the photoelectric keyboard switch of the invention realizes keyboard illumination and signal input through a light source, has a simple structure, low cost, high precision and long service life.
  • the photoelectric keyboard switch is further provided with a collecting lens 51 on the propagation path of the light reflected by the reflecting portion 13, and the collecting lens 51 is connected to the light guiding column 50. Lower end.
  • the condensing lens 51 can be integrally molded with the light guiding rod 50. Of course, the condensing lens 51 can also be separately provided and connected to the lower end of the light guiding rod 50 by gluing or hot melting. Since the light reflecting portion 13 reflects part of the light emitted from the light emitting element 30 to the light receiving element 40 by specular reflection, the light has a certain dispersion during the specular reflection process, which may be caused by the light energy being weak during the use of the switch. In the present embodiment, the condensing lens 51 is disposed on the propagation path of the light reflected by the light reflecting portion 13 to converge the light reflected by the light reflecting portion 13 to increase the energy of the light reflected to the light receiving element 40, thereby improving the light. The sensitivity of this switch during signal input.
  • the housing 10 is formed with a first cavity 11 and a second cavity 12 .
  • the pressing shaft 20 is partially received in the first cavity 11 and the light guide 50 is disposed.
  • the light reflecting portion 13 is formed in the cavity wall of the second cavity 12 .
  • the cavity portion of the reflective portion 13 formed in the second cavity 12 is located inside the casing 10.
  • the reflective portion 13 is in a relatively closed space, and the reflective portion 13 is not easily attached by foreign matter during the use of the switch. Contamination ensures that the switch continues to operate normally.
  • the light-emitting element 30 and the light-receiving element 40 are both fixed to the PCB board 90 and are located in a space surrounded by the housing 10 and the PCB. Specifically, the light-emitting portion of the light-emitting element 30 is located in the second cavity 12, and the light-receiving element 40 is located in the first cavity 11, by providing the light-emitting element 30 and the light-receiving element 40 in a sealed space. The light-emitting element 30 and the light-receiving element 40 are prevented from being interfered by external foreign matter during the switching operation, thereby prolonging the normal service life of the switch.
  • the bottom of the first cavity 11 is provided with a frame 14 .
  • the lower end of the pressing shaft 20 defines a mounting slot 22 .
  • the photoelectric keyboard switch further includes a striker 60 and a first elastic sleeve disposed on the striker 60 .
  • the upper end of the striker 60 and the first elastic member 70 extend into the mounting groove 22, and the lower end of the striker 60 is limited to the frame 14.
  • the lower end of the first elastic member 70 abuts the upper end of the frame 14.
  • the first elastic member 70 can be a spring.
  • the first elastic member 70 of the photoelectric keyboard switch is always in a compressed state, and the upper end of the first elastic member 70 abuts against the upper wall of the mounting groove 22, and the lower end thereof abuts against the upper end of the frame 14.
  • the frame body 14 is surrounded by two baffles (not labeled) fixedly connected to the bottom wall of the first cavity 11, and the baffle is approximately "L" shaped, and the two baffles are oppositely disposed, in order to realize the lower end of the first elastic member 70.
  • the embodiment is formed with a stepped hole 143 (refer to FIG. 6) at the upper end of the frame body 14.
  • the lower end of the first elastic member 70 is located in the card slot 17, and the first step of pressing the pressing shaft 20 is first.
  • the elastic member 70 is not easily offset and can be maintained in a vertical state, and the pressing and bouncing process of the pressing shaft 20 is relatively smooth.
  • the first elastic member 70 is always in a compressed state.
  • the housing 10 of the present embodiment is further provided with a through hole 151 in the cavity wall of the first cavity 11 and pressed against the shaft 20 .
  • the side wall is provided with the barb 24, and the barb 24 is pressed against the hole wall of the hole 151 when the pressing shaft 20 is not depressed, so that the pressing shaft 20 can be prevented from ejecting the first cavity 11 under the elastic force of the first elastic member 70.
  • the lower end of the striker 60 defines a limit slot 62.
  • the photoelectric keyboard switch further includes a second elastic member 80. One end of the second elastic member 80 extends into the limiting slot 62.
  • the bottom wall of the second slot 12 is abutted against the bottom wall of the second slot 12, and the lower side wall of the striker 60 is further provided with a protrusion 63.
  • the side wall of the frame 14 is provided with a slide 141.
  • the trajectory 141 is formed with a guiding inclined surface 142, and the protruding block 63 is inserted into the sliding path 141.
  • the upper end of the striker 60 is provided with an abutting portion 61.
  • the pressing shaft 20 is spaced apart from the mounting groove 22 by two ejector pins 23 (refer to FIG. 7 and 8), when the pressing shaft 20 is in the non-pressing state, the end portion of the abutting portion 61 abuts against the end portion of the jack 23, and when the pressing shaft 20 is in the pressing state, the guiding edge of the bump 63 along the chute 141
  • the 142 slides and drives the striker 60 to rotate, and the abutment portion 61 of the striker 60 is disengaged from the two jacks 23 to be inserted into the gap between the two jacks 23 and strikes the top wall of the mounting groove 22.
  • a positioning post 16 is further disposed in the frame body 14.
  • the second elastic member 80 is a compression spring, and the lower end thereof is sleeved on the positioning post 16 .
  • the abutting portion 61 is dislocated from the two ejector pins 23, and the abutting portion 61 is momentarily inserted into the vacancy between the two ejector pins 23 under the elastic force of the second elastic member 80 to impinge on the mounting groove 22.
  • the top wall which emits a crisp impact sound, makes the photoelectric keyboard switch have a higher entertainment experience during use.
  • the end portions of the two jacks 23 are respectively formed with a first abutting slope 231, and both ends of the end portion of the abutting portion 61 are formed with the first abutting slope 231.
  • the second abutting slope 611 of the engagement abuts the first abutting slope 231 and the second abutting slope 611 when the pressing shaft 20 is in the non-pressing state.
  • the first abutting slope 231 and the second abutting slope 611 are relatively slid, so that the process of the misalignment of the striker 60 and the return of the rebound to the initial position is smoother.
  • the one of the housing 10 or the pressing shaft 20 has a sliding groove (not shown), and the other one has a sliding rail (not shown). Shown), the rail is stuck in the chute.
  • a chute can be formed in the cavity wall of the first cavity 11 of the housing 10, and a slide rail is formed on the outer side wall of the pressing shaft 20.
  • the direction in which the chute and the slide rail extend is the same as the direction of movement of the pressing shaft 20.
  • the side wall of the housing 10 is formed with a buckle 15 .
  • the PCB board 90 is provided with a mounting opening 91.
  • the housing 10 is disposed through the mounting opening 91 and is fastened to the PCB board 90 by the buckle 15.
  • a notch 92 is formed on one side of the mounting opening 91, and the PCB board 90 extends into the mounting opening 91 with a strapping station 93.
  • the two sides of the strapping station 93 form a limiting slot 94.
  • the light receiving element 40 is attached to the upper surface of the lap table 93.
  • the housing 10 is formed with a card slot 17 in the lower housing wall of the first cavity 11.
  • the lap 93 is inserted into the card slot 17, and the two sides of the card slot 17 It is limited to the limiting port 94.
  • the connection structure of the housing 10 and the PCB board 90 is relatively stable, and the disassembly and assembly is convenient.
  • the present invention also provides a mechanical keyboard, which includes a plurality of photoelectric keyboard switches.
  • the specific structure of the photoelectric keyboard switch refers to the above embodiment. Since the mechanical keyboard adopts all the technical solutions of all the above embodiments, at least the above implementation is implemented. All the beneficial effects brought about by the technical solutions of the examples will not be repeated here.

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  • Switches Operated By Changes In Physical Conditions (AREA)
  • Push-Button Switches (AREA)

Abstract

公开了一种光电键盘开关及机械键盘，其中，光电键盘开关包括PCB板(90)、壳体(10)、及按压轴(20)，所述按压轴于所述壳体内上下运动，PCB板还电性连接有光发射元件(30)以及光接收元件(40)，所述光发射元件及所述光接收元件相对设于所述按压轴的两侧，所述壳体设有反光部(13)以及固定有导光柱(50)，所述光发射元件射出的光线一部分由所述导光柱透出所述壳体，另一部分经所述反光部反射向所述光接收元件，所述按压轴形成有透光孔，当所述按压轴处于下压状态时，所述反光部反射的光线穿过所述透光孔而被所述光接收元件接收，当所述按压轴处于非下压状态时，所述反光部反射的光线被所述按压轴阻挡。本发明的光电键盘开关结构简单，精度较高、成本较低。

Description

光电键盘开关及机械键盘
技术领域
本发明涉及电脑配件技术领域，特别涉及一种光电键盘开关及应用该光电键盘开关的机械键盘。
背景技术
光电开关是利用物体对光束的遮挡或反射，改变光电传感器的受光状态，从而接通或断开电路的装置。由于光电开关具有响应速度快等优点，深受市场消费者的喜爱。
但现有的光电开关通常是设置多个发光装置，其中一部分发光装置用于光电开关的照明，另一部分用于光电开关的信号输入，使得光电开关的整体结构较复杂，成本较高。
发明内容
本发明的主要目的是提供一种光电键盘开关，旨在简化光电键盘开关的结构，降低成本，并提高其精度。
为实现上述目的，本发明提出的光电键盘开关，包括PCB板、中空的壳体、及按压轴，所述按压轴部分容置于所述壳体内并于所述壳体内上下运动，所述壳体可拆卸连接所述PCB板，所述PCB板还电性连接有光发射元件以及光接收元件，所述光发射元件及所述光接收元件相对设于所述按压轴的两侧，所述壳体靠近所述光发射元件的一侧设有反光部以及固定有导光柱，所述光发射元件向上射出的光线一部分由所述导光柱透出所述壳体，另一部分光线经所述反光部反射而射向所述光接收元件，所述按压轴形成有透光孔，当所述按压轴处于下压状态时，所述反光部反射的光线穿过所述透光孔而被所述光接收元件接收，当所述按压轴处于非下压状态时，所述反光部反射的光线被所述按压轴阻挡。
优选地，该光电键盘开关在所述反光部反射的光线的传播路径上还设置有聚光透镜，所述聚光透镜连接于所述导光柱的下端。
优选地，所述壳体或所述按压轴二者之一具有滑槽，二者中之另一具有滑轨，所述滑轨卡入所述滑槽内。
优选地，所述壳体形成有相连通的第一容腔和第二容腔，所述按压轴部分容置于所述第一容腔内，所述导光柱容置于所述第二容腔内，所述反光部形成于所述第二容腔的腔壁。
优选地，所述光发射元件和所述光接收元件均固定于所述PCB板的上表面，并位于所述第一容腔和所述第二容腔所围成的空间内。
优选地，所述按压轴的下端开设有安装槽，该光电键盘开关还包括撞针及套设于所述撞针的第一弹性件，所述撞针和所述第一弹性件的上端均伸入所述安装槽内，所述第一容腔的底部设置有框体，所述撞针的下端限位于所述框体内，所述第一弹性件的下端抵接于所述框体的上端。
优选地，所述撞针的下端开设有限位槽，该光电键盘开关还包括第二弹性件，所述第二弹性件一端抵接所述限位槽的槽壁，另一端抵接所述第一容腔的底壁，所述撞针的下部侧壁还设置有凸块，所述框体的侧壁开设有滑道，所述滑道设置有导向斜面，所述凸块插设于所述滑道内；所述撞针的上端设置有抵接部，所述按压轴于所述安装槽内间隔设置有两顶杆，当所述按压轴处于非按压状态时，所述抵接部的端部与所述顶杆的端部抵接，当所述按压轴处于按压状态时，所述凸块沿所述滑道的导向斜面滑动并驱使所述撞针转动，所述撞针的抵接部脱离两所述顶杆的端部而***两所述顶杆之间的空位并撞击所述安装槽的顶壁。
优选地，两所述顶杆的端部均形成有第一抵接斜面，所述抵接部的端部两侧均形成有与所述第一抵接斜面相配合的第二抵接斜面，当所述按压轴处于非按压状态时，所述第一抵接斜面与所述第二抵接斜面贴合。
优选地，所述壳体的侧壁形成有卡扣，所述PCB板开设有安装口，所述壳体穿设于所述安装口并体通过所述卡扣扣合于所述PCB板。
本发明还提出一种机械键盘，包括多个光电键盘开关，该光电键盘开关包括PCB板、中空的壳体、及按压轴，所述按压轴部分容置于所述壳体内并于所述壳体内上下运动，所述壳体可拆卸连接所述PCB板，所述PCB板还电性连接有光发射元件以及光接收元件，所述光发射元件及所述光接收元件相对设于所述按压轴的两侧，所述壳体靠近所述光发射元件的一侧设有反光部以及固定有导光柱，所述光发射元件向上射出的光线一部分由所述导光柱透出所述壳体，另一部分光线经所述反光部反射而射向所述光接收元件，所述按压轴形成有透光孔，当所述按压轴处于下压状态时，所述反光部反射的光线穿过所述透光孔而被所述光接收元件接收，当所述按压轴处于非下压状态时，所述反光部反射的光线被所述按压轴阻挡。
优选地，该光电键盘开关在所述反光部反射的光线的传播路径上还设置有聚光透镜，所述聚光透镜连接于所述导光柱的下端。
优选地，所述壳体或所述按压轴二者之一具有滑槽，二者中之另一具有滑轨，所述滑轨卡入所述滑槽内。
优选地，所述壳体形成有相连通的第一容腔和第二容腔，所述按压轴部分容置于所述第一容腔内，所述导光柱容置于所述第二容腔内，所述反光部形成于所述第二容腔的腔壁。
优选地，所述按压轴的下端开设有安装槽，该光电键盘开关还包括撞针及套设于所述撞针的第一弹性件，所述撞针和所述第一弹性件的上端均伸入所述安装槽内，所述第一容腔的底部设置有框体，所述撞针的下端限位于所述框体内，所述第一弹性件的下端抵接于所述框体的上端。
优选地，所述撞针的下端开设有限位槽，该光电键盘开关还包括第二弹性件，所述第二弹性件一端抵接所述限位槽的槽壁，另一端抵接所述第一容腔的底壁，所述撞针的下部侧壁还设置有凸块，所述框体的侧壁开设有滑道，所述滑道设置有导向斜面，所述凸块插设于所述滑道内；所述撞针的上端设置有抵接部，所述按压轴于所述安装槽内间隔设置有两顶杆，当所述按压轴处于非按压状态时，所述抵接部的端部与所述顶杆的端部抵接，当所述按压轴处于按压状态时，所述凸块沿所述滑道的导向斜面滑动并驱使所述撞针转动，所述撞针的抵接部脱离两所述顶杆的端部而***两所述顶杆之间的空位并撞击所述安装槽的顶壁。
本发明技术方案通过在壳体内设置反光部以及导光柱，将光发射元件发出的光线一部分通过导光柱传导而透射出壳体，用于键盘的照明，另一部分光线通过壳体上设置的反光部进行反射，在按压轴处于按压状态时，反光部反射的光线穿过按压轴上开设的透光孔而被光接收元件接收，从而实现光电键盘开关的信号输入。本发明的光电键盘开关通过一个光源实现键盘照明和信号输入，结构简单，成本较低，并且精度较高，使用寿命长。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本发明光电键盘开关一实施例的结构示意图；
图2为图1中A-A处的剖视结构示意图；
图3为图1中光电键盘开关的***结构示意图；
图4为图1中光电键盘开关的另一视角的***结构示意图；
图5为本发明光电键盘开关的壳体的结构示意图；
图6为本发明光电键盘开关的壳体的另一视角的结构示意图；
图7为本发明光电键盘开关的按压轴的结构示意图；
图8为本发明光电键盘开关的按压轴的另一视角的结构示意图；
图9为本发明光电键盘开关的撞针的结构示意图；
图10为本发明光电键盘开关的撞针的另一视角的结构示意图。
附图标号说明：
标号 名称 标号 名称
10 壳体 24 倒勾
11 第一容腔 30 光发射元件
12 第二容腔 40 光接收元件
13 反光部 50 导光柱
14 框体 51 聚光透镜
141 滑道 60 撞针
142 导向斜面 61 抵接部
143 台阶孔 611 第二抵接斜面
15 卡扣 62 限位槽
151 通孔 63 凸块
16 定位柱 70 第一弹性件
17 卡槽 80 第二弹性件
20 按压轴 90 PCB板
21 透光孔 91 安装口
22 安装槽 92 缺口
23 顶杆 93 搭接台
231 第一抵接斜面 94 限位口
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明，本发明实施例中所有方向性指示（诸如上、下、左、右、前、后……）仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，在本发明中涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
本发明提出一种光电键盘开关。
请结合参照图1和图2，在本发明一实施例中，该光电键盘开关包括PCB板90、中空的壳体10、及按压轴20，按压轴20部分容置于壳体10内并于壳体10内上下运动，壳体10可拆卸连接PCB板，PCB板还电性连接有光发射元件30以及光接收元件40，光发射元件30及光接收元件40相对设于按压轴20的两侧，壳体10靠近光发射元件30的一侧设有反光部13以及固定有导光柱50，光发射元件30向上射出的光线一部分由导光柱50透出壳体10，另一部分光线经反光部13反射而射向光接收元件40，按压轴20形成有透光孔21，当按压轴20处于下压状态时，反光部13反射的光线穿过透光孔21而被光接收元件40接收，当按压轴20处于非下压状态时，反光部13反射的光线被按压轴20阻挡。
壳体10可采用光学级的压克力或者塑料材质通过一体注塑方式生产制成。反光部13可以是壳体10自身结构的一部分，其可在壳体10双色注塑成型完成后，对壳体10对应反光部13区域的壳壁进行表面处理，形成光泽度较高表面以将光发射元件30向上射出的部分光线反射至光接收元件40。当然反光部13也可以是和壳体10相独立的部件，其可以是单独设置的有机玻璃镜片或者其他反光零件，并在壳体10注塑完成后，反光部13通过胶粘方式贴附在壳体10的侧壁上。本实施例的反光部13优选与壳体10一体成型的方式，利用壳体10材料本身特性并进行表面加工形成反光部13，以节省生产成本。反光部13可呈弧面形状，其将光发射元件30向上射出的部分光线的反射至光接收元件40时具有一定的聚光效果。
导光柱50可为透明的PC材质，导光柱50的上端透出壳体10，以将光发射元件30向上发出的部分光线传导出壳体10。按压轴20可采用非透明材质的塑料通过注塑方式生产制成，按压轴20透出壳体10的部分可连接有按键的键帽（未图示），通过导光柱50向上传导出来的光线可实现按键的照明，如照亮键帽上的字母标识，将相邻按键之间的缝隙进行照亮，方便人们使用的同时，也增加了具有本光电键盘开关的键盘的美感。按压轴20于其中部开设贯穿其主体的透光孔21，透光孔21的开口形状可为圆形、方形或者其他多边形形状，本实施例反光部13反射的光线的传播路线位于水平面，透光孔21的轴线也为水平面内的直线，在按压轴20处于非下压状态下，透光孔21位于反光部13光反射路径的上方，反光部13反射的光线被按压轴20阻挡，光接收元件40未能接收到光发射元件30发出的光线，本开关无信号输入。当按下按压轴20时，透光孔21的轴线与反光部13反射的光线的传播路线重合，光接收元件40能接收到光发射元件30发出的光线，本开关实现信号输入。
本实施例光发射元件30可为LED灯（如单色LED灯、双色LED灯、RGB三色LED灯）。光接收元件40可为红外接收管，即光接收元件40通过接收不可见光实现开关信号输入，此时光反射元件的LED灯内可贴设有至少两个发光芯片，其中一个发光芯片发出可见光用于键盘的照明，另一个可发出不可见光（如红外线）照射到光接收元件40实现本开关的信号输入。当然，本实施例光接收元件40也可以采用近似光敏接收管的结构，可接收光发射元件30发出的全波段光线，实现开关的信号输入。
本发明技术方案通过在壳体10内设置反光部13以及导光柱50，将光发射元件30发出的光线一部分通过导光柱50传导而透射出壳体10，用于键盘的照明，另一部分光线通过壳体10上设置的反光部13进行反射，在按压轴20处于按压状态时，反光部13反射的光线穿过按压轴20上开设的透光孔21而被光接收元件40接收，从而实现光电键盘开关的信号输入。本发明的光电键盘开关通过一个光源实现键盘照明和信号输入，结构简单，成本较低，并且精度较高，使用寿命长。
请结合参照图2至图4，为了提高本光电键盘开关的灵敏度，本光电键盘开关在反光部13反射光线的传播路径上还设置有聚光透镜51，聚光透镜51连接于导光柱50的下端。
聚光透镜51可与导光柱50一体注塑成型，当然聚光透镜51也可以单独设置，并通过胶粘或热熔方式与导光柱50的下端连接。由于反光部13通过镜面反射方式将光发射元件30发出的部分光线反射至光接收元件40，镜面反射过程中光线具有一定分散性，可能因为光线能量不强造成本开关使用过程中出现输入过程中信号不灵敏的问题，本实施例将聚光透镜51设于反光部13反射光线的传播路径上，对反光部13反射的光线进行汇聚，提高反射至光接收元件40的光线的能量，从而提高了本开关在信号输入过程中的灵敏度。
请结合参照图1、图2以及图5，,壳体10形成有相连通的第一容腔11和第二容腔12，按压轴20部分容置于第一容腔11内，导光柱50容置于第二容腔12内，反光部13形成于第二容腔12的腔壁。
本实施例将反光部13形成于第二容腔12的腔壁位于壳体10的内部，反光部13处于一个相对封闭的空间内，反光部13在开关使用过程中不容易因异物进入而附着污染，可确保开关持续正常工作。
光发射元件30和光接收元件40均固定于PCB板90，并位于壳体10和PCB所围成的空间内。具体而言，光发射元件30的出光部分位于第二容腔12内，光接收元件40位于第一容腔11内，通过将光发射元件30和光接收元件40设于密闭的空间内，这样可避免光发射元件30和光接收元件40在开关工作过程中受外界异物的干扰，延长开关的正常使用寿命。
请参照图2至图6，第一容腔11的底部设置有框体14，按压轴20的下端开设有安装槽22，该光电键盘开关还包括撞针60及套设于撞针60的第一弹性件70，撞针60和第一弹性件70的上端均伸入安装槽22内，撞针60的下端限位于所述框体14内，第一弹性件70的下端抵接框体14的上端。
第一弹性件70可为弹簧。本光电键盘开关第一弹性件70一直处于压缩状态，第一弹性件70的上端抵接安装槽22的上壁，其下端抵接框体14的上端。框体14由两个固定连接于第一容腔11的底壁的挡板（未标示）围成，挡板近似“L”形，两挡板相对设置，为了实现第一弹性件70下端的固定，本实施例于框体14的上端下沉形成有台阶孔143（参图6），第一弹性件70的下端现位于卡槽17内，则在按压轴20下压过程中，第一弹性件70不易偏移可保持竖直状态，按压轴20的下压和弹起过程比较顺畅。由于第一弹性件70一直处于压缩状态，请结合参照图1、图3及图4，本实施例壳体10还于第一容腔11的腔壁开设有通孔151，并在按压轴20的侧壁设置倒勾24，在按压轴20未下压状态，倒勾24抵接通孔151的孔壁，可避免按压轴20在第一弹性件70弹力作用下弹出第一容腔11。
请结合参照图1至图4以及图9和图10，撞针60的下端开设有限位槽62，该光电键盘开关还包括第二弹性件80，第二弹性件80的一端伸入限位槽62并抵接限位槽62的顶壁，另一端抵接第二容腔12的底壁，撞针60的下部侧壁还设置有凸块63，框体14的侧壁开设有滑道141，滑道141形成有导向斜面142，凸块63插设于滑道141内；撞针60的上端设置有抵接部61，按压轴20于安装槽22内间隔设置有两顶杆23（参图7和图8），当按压轴20处于非按压状态时，抵接部61的端部与顶杆23的端部抵接，当按压轴20处于按压状态时，凸块63沿滑道141的导向斜面142滑动并驱使撞针60转动，撞针60的抵接部61脱离两顶杆23而***两顶杆23之间的空位并撞击安装槽22的顶壁。
本实施例于框体14内还设置有定位柱16，第二弹性件80为压簧，其下端套设于定位柱16。在每一次压下按压轴20后，按压轴20的顶杆23推动撞针60的抵接部61使得撞针60下移，撞针60的凸块63则沿滑道141的导向斜面142滑动，凸块63从而驱使撞针60转动。在撞针60转动过程中，抵接部61与两顶杆23错位脱离，抵接部61在第二弹性件80的弹力驱动下瞬间***两顶杆23之间的空位而撞击至安装槽22的顶壁，从而发出清脆的撞击声，使得本光电键盘开关在使用过程中具有较高的娱乐体验。
请再次结合参照图2、图9和图10，两顶杆23的端部均形成有第一抵接斜面231，抵接部61的端部两侧均形成有与第一抵接斜面231相配合的第二抵接斜面611，当按压轴20处于非按压状态时，第一抵接斜面231与第二抵接斜面611贴合。在按压轴20处于按压状态时，通过第一抵接斜面231与第二抵接斜面611产生相对滑动，使得撞针60错位转动和回弹复位至初始位置过程更顺畅。
本光电键盘开关为了确保按压轴20在按压过程保持动作顺畅，壳体10或所述按压轴20二者之一具有滑槽（未图示），二者中之另一具有滑轨（未图示），滑轨卡入所述滑槽内。具体而言，可于壳体10的第一容腔11的腔壁形成滑槽，在按压轴20的外侧壁形成滑轨，滑槽和滑轨的延伸方向与按压轴20的运动方向相同。通过滑槽和滑轨的配合，可避免按压轴20下压过程中被壳体10的腔壁卡住，按压操作更顺畅。
请结合参照图3至图5，壳体10的侧壁形成有卡扣15， PCB板90开设有安装口91，壳体10穿设于安装口91并体通过卡扣15扣合于所述PCB板90。本实施例于安装口91的一侧形成有与光发射元件30相配合的缺口92，并且PCB板90向安装口91内延伸有搭接台93，搭接台93两侧形成限位口94，光接收元件40贴设于搭接台93的上表面。壳体10于第一容腔11的下部壳壁形成有卡槽17，在壳体10安装于PCB板90的过程中，搭接台93卡入卡槽17内，卡槽17的两侧壁限位于限位口94，通过以上的配合结构，使得壳体10与PCB板90的连接结构较稳固，并且拆装较方便。
本发明还提出一种机械键盘，该机械键盘包括多个光电键盘开关，该光电键盘开关的具体结构参照上述实施例，由于机械键盘采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (15)

  1. 一种光电键盘开关，包括PCB板、中空的壳体、及按压轴，所述按压轴部分容置于所述壳体内并于所述壳体内上下运动，所述壳体可拆卸连接所述PCB板，其中，所述PCB板还电性连接有光发射元件以及光接收元件，所述光发射元件及所述光接收元件相对设于所述按压轴的两侧，所述壳体靠近所述光发射元件的一侧设有反光部以及固定有导光柱，所述光发射元件向上射出的光线一部分由所述导光柱透出所述壳体，另一部分光线经所述反光部反射而射向所述光接收元件，所述按压轴形成有透光孔，当所述按压轴处于下压状态时，所述反光部反射的光线穿过所述透光孔而被所述光接收元件接收，当所述按压轴处于非下压状态时，所述反光部反射的光线被所述按压轴阻挡。
  2. 如权利要求1所述的光电键盘开关，其中，该光电键盘开关在所述反光部反射的光线的传播路径上还设置有聚光透镜，所述聚光透镜连接于所述导光柱的下端。
  3. 如权利要求1所述的光电键盘开关，其中，所述壳体或所述按压轴二者之一具有滑槽，二者中之另一具有滑轨，所述滑轨卡入所述滑槽内。
  4. 如权利要求1所述的光电键盘开关，其中，所述壳体形成有相连通的第一容腔和第二容腔，所述按压轴部分容置于所述第一容腔内，所述导光柱容置于所述第二容腔内，所述反光部形成于所述第二容腔的腔壁。
  5. 如权利要求4所述的光电键盘开关，其中，所述光发射元件和所述光接收元件均固定于所述PCB板的上表面，并位于所述第一容腔和所述第二容腔所围成的空间内。
  6. 如权利要求4所述的光电键盘开关，其中，所述按压轴的下端开设有安装槽，该光电键盘开关还包括撞针及套设于所述撞针的第一弹性件，所述撞针和所述第一弹性件的上端均伸入所述安装槽内，所述第一容腔的底部设置有框体，所述撞针的下端限位于所述框体内，所述第一弹性件的下端抵接于所述框体的上端。
  7. 如权利要求6所述的光电键盘开关，其中，所述撞针的下端开设有限位槽，该光电键盘开关还包括第二弹性件，所述第二弹性件一端抵接所述限位槽的槽壁，另一端抵接所述第一容腔的底壁，所述撞针的下部侧壁还设置有凸块，所述框体的侧壁开设有滑道，所述滑道设置有导向斜面，所述凸块插设于所述滑道内；所述撞针的上端设置有抵接部，所述按压轴于所述安装槽内间隔设置有两顶杆，当所述按压轴处于非按压状态时，所述抵接部的端部与所述顶杆的端部抵接，当所述按压轴处于按压状态时，所述凸块沿所述滑道的导向斜面滑动并驱使所述撞针转动，所述撞针的抵接部脱离两所述顶杆的端部而***两所述顶杆之间的空位并撞击所述安装槽的顶壁。
  8. 如权利要求7所述的光电键盘开关，其中，两所述顶杆的端部均形成有第一抵接斜面，所述抵接部的端部两侧均形成有与所述第一抵接斜面相配合的第二抵接斜面，当所述按压轴处于非按压状态时，所述第一抵接斜面与所述第二抵接斜面贴合。
  9. 如权利要求1所述的光电键盘开关，其中，所述壳体的侧壁形成有卡扣，所述PCB板开设有安装口，所述壳体穿设于所述安装口并通过所述卡扣扣合于所述PCB板。
  10. 一种机械键盘，其中，包括多个光电键盘开关，所述光电键盘开关包括PCB板、中空的壳体、及按压轴，所述按压轴部分容置于所述壳体内并于所述壳体内上下运动，所述壳体可拆卸连接所述PCB板，所述PCB板还电性连接有光发射元件以及光接收元件，所述光发射元件及所述光接收元件相对设于所述按压轴的两侧，所述壳体靠近所述光发射元件的一侧设有反光部以及固定有导光柱，所述光发射元件向上射出的光线一部分由所述导光柱透出所述壳体，另一部分光线经所述反光部反射而射向所述光接收元件，所述按压轴形成有透光孔，当所述按压轴处于下压状态时，所述反光部反射的光线穿过所述透光孔而被所述光接收元件接收，当所述按压轴处于非下压状态时，所述反光部反射的光线被所述按压轴阻挡。
  11. 如权利要求10所述的机械键盘，其中，该光电键盘开关在所述反光部反射的光线的传播路径上还设置有聚光透镜，所述聚光透镜连接于所述导光柱的下端。
  12. 如权利要求10所述的机械键盘，其中，所述壳体或所述按压轴二者之一具有滑槽，二者中之另一具有滑轨，所述滑轨卡入所述滑槽内。
  13. 如权利要求10所述的机械键盘，其中，所述壳体形成有相连通的第一容腔和第二容腔，所述按压轴部分容置于所述第一容腔内，所述导光柱容置于所述第二容腔内，所述反光部形成于所述第二容腔的腔壁。
  14. 如权利要求13所述的机械键盘，其中，所述按压轴的下端开设有安装槽，该光电键盘开关还包括撞针及套设于所述撞针的第一弹性件，所述撞针和所述第一弹性件的上端均伸入所述安装槽内，所述第一容腔的底部设置有框体，所述撞针的下端限位于所述框体内，所述第一弹性件的下端抵接于所述框体的上端。
  15. 如权利要求14所述的机械键盘，其中，所述撞针的下端开设有限位槽，该光电键盘开关还包括第二弹性件，所述第二弹性件一端抵接所述限位槽的槽壁，另一端抵接所述第一容腔的底壁，所述撞针的下部侧壁还设置有凸块，所述框体的侧壁开设有滑道，所述滑道设置有导向斜面，所述凸块插设于所述滑道内；所述撞针的上端设置有抵接部，所述按压轴于所述安装槽内间隔设置有两顶杆，当所述按压轴处于非按压状态时，所述抵接部的端部与所述顶杆的端部抵接，当所述按压轴处于按压状态时，所述凸块沿所述滑道的导向斜面滑动并驱使所述撞针转动，所述撞针的抵接部脱离两所述顶杆的端部而***两所述顶杆之间的空位并撞击所述安装槽的顶壁。
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