CN204539108U - A kind of photoelectric integral type mechanical axis keyboard switch module - Google Patents
A kind of photoelectric integral type mechanical axis keyboard switch module Download PDFInfo
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- CN204539108U CN204539108U CN201520118887.4U CN201520118887U CN204539108U CN 204539108 U CN204539108 U CN 204539108U CN 201520118887 U CN201520118887 U CN 201520118887U CN 204539108 U CN204539108 U CN 204539108U
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Abstract
The utility model discloses a kind of photoelectric integral type mechanical axis keyboard switch module, comprise housing, be installed in the button cap of housing upper, also comprise the drive unit be installed in housing, optoelectronic switch, moving optical assembly and fixed optics assembly, described moving optical assembly installing on the drive means, described optoelectronic switch comprises pcb board, the SMD IR be integrated on pcb board manages and SMD PT manages, drive unit is made to drive moving optical assembly to move up and down the relative position controlling moving optical assembly and fixed optics assembly by pressing keys cap, when in the coupling light sent from SMD IR pipe to SMD PT pipe, conducting light paths, thus realize optoelectronic switch path, when the light sent from SMD IR pipe can not be coupled in SMD PT pipe, light path disconnects, thus realize optoelectronic switch disconnection.Have and significantly can reduce artificial and welding cost, welding registration, production efficiency is high, and the advantage that the quality stability of product is high.
Description
Technical field
The present invention relates to the switch module on the keyboard of character input system (as computer input system), more particularly, relate to a kind of photoelectric integral type mechanical axis keyboard switch module for character input.
Background technology
Keyboard divides according to Switch (being commonly called as: switch control rule principle or axle), probably can be classified as 5 classes, is thin film type keyboard, conductive rubber formula keyboard, contactless electrostatic capacity type keyboard, mechanical keyboard respectively, and PKB photoelectric keyboard.Described thin film type keyboard, generally there are three films its inside, and topmost a slice is cathode circuit, and centre is wall, is cathode traces below.Operation principle is by press mechanical pressing module under key tap cap, and top just can contact with the film of below and be energized, and completes conducting, therefore is called membrane keyboard.The major defect of membrane keyboard is: the keyboard life-span is shorter, and film easily weares and teares; Reaction has time delay; And due to keyboard size little, press button gap is shorter, and Study on Man-Machine Function aspect is relatively poor, and the feel that operates is not fine, and the time has grown hand can be more tired.As for other two types, i.e. conductive rubber formula keyboard and contactless electrostatic capacity type keyboard, due to cost and technical elements, seldom on sale on the market, be nearly all confined on TV remote controller and game paddle.
Mechanical keyboard is the main flow in current computor-keyboard market, and its operation principle has a circuit board bottom keyboard, plate fixed more than 100 mechanical axis, and each axle is independently switch, signal will be made to conduct to computer by circuit board by pressing down mechanical axis.The superior of mechanical keyboard, be quick on the draw and feel better, be applicable to the needs of office personage and game player simultaneously.But the shortcoming of pure mechanical axis keyboard switch, conclude and be what time: one, pure mechanical axis switch does conducting and the disconnection of contact and non-contact action realizing circuit with hard contact formula shell fragment, this mechanical contact structure easily produces fatigability infringement, shell fragment contact point easily weares and teares, thus occurring that switch control rule lost efficacy or misoperation controls, life of product falls short of; Its two, metal clips and contact easily by environment for use affect cause oxidation and aging, cause conducting contact bad, cause switch control rule lost efficacy or misoperation control; They are three years old, the welding foot of pure mechanical axis construction of switch is direct insertion structure, need manual plug-in unit on PCB (printed circuit board (PCB)), and then weld and cutting, in welding production process, easily occur that plug-in unit is not in place, causes the operations such as maintenance of doing over again, production operation operation is loaded down with trivial details, be not suitable for automation plug-in unit to produce, take artificial height, production efficiency is low and manufacturing cost is high; They are four years old, the button cap character illuminator of this pure mechanical axis construction of switch adopts direct insertion LED, equally also need manually to carry out manual plug-in unit to PCB in a large number, and then weld and cutting, production operation operation is loaded down with trivial details, be not suitable for automation plug-in unit to produce, material cost is high, and production efficiency is low and manufacturing cost is high.
Photoelectric key board is emerging keyboard in recent years, and it is on traditional mechanical key axle technical foundation, adds brand-new optoelectronic induction recognition technology, is optical sensor assembly by replacing traditional contact plectrum, some problems of improvement conventional contact mechanical switch.It utilizes optical principle and photoelectric coupling technology, the path of light is formed by light-emitting component and photo detector, resistance light part priming optical coupler in the cut-out carrying out light path and closing course, change the break-make of circuit resistance value completing circuit, thus realize the conversion of electricity---light---electricity, and then the disconnection of control switch and path, and photoelectricity is isolated mutually between input and output.Compared to other keyboards, PKB photoelectric keyboard has following advantage: 1. optical axis keyboard adopts state-of-the art axle, and optical axis keyboard is longer than the general thin keyboard life-span, and theoretical service life is unlimited, can use 50000 hours under continuous "on" position; 2., after optical axis keyboard uses for a long time, handfeel of keys change is very little, and film and standard machinery keyboard then cannot reach; 3. optical axis keyboard can accomplish that more than 104 keys are without punching, (be therefore applicable to very much game player to use, most of occupation electricity election contest hand all can use without rushing key board to improve the standard); 4. oneself can change button cap, facilitate individual character DIY (doing yourself); 5. optical axis lower cover guide groove and handle guide pillar contact site are widened, and use mould mirror surface manufacture craft product frictional force is less, more wear-resisting, the life-span is more permanent; 6. use high-quality qin steel wire spring, anti-fatigue performance be better, the action of resilience force large switching over sooner, sensitiveer, feel is better; 7. there is not Mechanical Contact jitter problem in optical profile type, and odds and ends news, switch motion time zero postpone, and operate sensitiveer, accurate.
Notification number is that CN2301752Y discloses a kind of photoelectric key board, as shown in Figure 1, it is by the key body be arranged on pedestal, be arranged at the back-moving spring on pedestal and key body, be connected to the shadow shield between key body and back-moving spring, be opened in the loophole on shadow shield top, and be arranged at transmitting tube and the receiving tube composition of loophole both sides.Which solve mechanical keyboard and produce the deficiency of fault because frequently making mechanical contact, there is parts selection matching reasonable, failure rate is low, the advantages such as keyboard service life is long.
The operation principle announced for CN2750570Y of notification number and notification number are the basically identical photoelectric key board of CN2301752Y in addition, as shown in Figure 2, it is characterized in that: to have in the middle of it for the transparent body 1 and its nontransparent lateral wall 2 button 11 that can slide up and down along the vertical wall 4 in shape chamber 12, have the light sensor 9 in the outside of the through hole 6 be positioned on vertical wall 4, through hole 6 is corresponding with light sensor 9; Charactes Display carrier 10 is had below button 11; Have elastic component bottom 11.It is consistent with the set-up mode of common keyboard, by the pressing of button 11, upspringing realizes shading to light sensor 9, printing opacity, the high and low level of production in optical input circuit, the conductive contact which solving traditional mechanical keyboard causes the phenomenons such as keyboard is malfunctioning, inefficacy because of, contact oxidation etc. aging by dust, conductive rubber.But all there is following shortcoming in the PKB photoelectric keyboard of currently available technology: 1. all do not collimate between transmitting tube and receiving tube and the optical design of condenser system, because the lighting angle of transmitting tube is larger, adopt the mode of shadow shield (or nontransparent lateral wall) and loophole (or being through hole) that most light can be blocked, only have sub-fraction light can be received pipe by loophole to receive, therefore photoelectric coupling efficiency is lower.When loophole stockpiles dust due to electrostatic, the detectivity of receiving tube (or light-sensitive element) can be made sharply to decline.Lighting angle in addition due to transmitting tube is larger, and employing collimating lens useless narrows its beam angle, when the color of button inwall is white, or shadow shield size is smaller when causing shading tight, its stray light produced is larger, thus the noise causing receiving tube to produce is obvious.2. IR pipe (transmitting tube) of optical axis machinery keyboard switch modular structure and the weld parts pin of PT pipe (receiving tube) are direct insertion structure, need manual plug-in unit on PCB (printed circuit board (PCB)), and then weld and cutting, in welding production process, easily occur plug-in unit off normal phenomenon, cause the operations such as maintenance of doing over again, production operation operation is loaded down with trivial details, be not suitable for automation plug-in unit to produce, take artificial height, cost of parts is high, and production efficiency is low and manufacturing cost is high.3. the button cap character illuminator of this pure mechanical axis construction of switch adopts direct insertion LED, and same needs manually carries out manual plug-in unit in a large number to PCB, and then welds and cutting, production operation operation is loaded down with trivial details, be not suitable for automation plug-in unit to produce, material cost is high, and production efficiency is low and manufacturing cost is high.4. although keyboard has the very long-life, waterproof ability is poor, needs to take more care during use.5. the handfeel of keys of optical axis keyboard is single.
Summary of the invention
The object of the invention is to overcome above-mentioned defect of the prior art, provide and significantly can reduce artificial and welding cost, welding registration, production efficiency is high, and the photoelectric integral type mechanical axis keyboard switch module that the quality stability of product is high.
For achieving the above object, technical scheme provided by the invention is as follows:
A kind of photoelectric integral type mechanical axis keyboard switch module, comprise housing, be installed in the button cap of housing upper, also comprise the drive unit be installed in housing, optoelectronic switch, moving optical assembly and fixed optics assembly, described moving optical assembly installing on the drive means, described optoelectronic switch comprises pcb board, the SMD IR be integrated on pcb board manages, SMD IR pipe is surface-pasted infrared diode, and SMD PT manages, SMD PT pipe is surface-pasted photoelectric sensor, drive unit is made to drive moving optical assembly to move up and down the relative position controlling moving optical assembly and fixed optics assembly by pressing keys cap, when in the coupling light sent from SMD IR pipe to SMD PT pipe, conducting light paths, thus realize optoelectronic switch path, when the light sent from SMD IR pipe can not be coupled in SMD PT pipe, light path disconnects, thus realize optoelectronic switch disconnection.
Compared with prior art, beneficial effect of the present invention is: adopt SMD IR pipe (surface-pasted infrared diode) and SMD PT to manage (surface-pasted photoelectric sensor) integral structure, makes drive unit drive moving optical assembly to move up and down disconnection and the path that the relative position controlling moving optical assembly and fixed optics assembly realizes optoelectronic switch by pressing keys cap.Photoelectric integral type mechanical axis keyboard switch modular structure involved in the present invention its also comprise button cap character illumination light-conducting system, this button cap character illumination light-conducting system is by the SMD LED be integrated on pcb board, SMD LED is surface-pasted light-emitting diode, be successively set on collector lens, light-guiding pillar and the illuminating lens above described SMD LED, by this button cap character illumination light-conducting system, button cap thrown light on.And have the following advantages:
1, adopt SMD IR pipe (surface-pasted infrared diode) and SMD PT to manage (surface-pasted photoelectric sensor) integral structure, the relative position in conjunction with moving optical assembly and fixed optics assembly realizes the disconnection of optoelectronic switch and the control of path.Because the electro-optical components of product structure of the present invention adopts SMD packaged type, can adopt full-automatic attachment and welding, significantly reduce artificial and welding cost, welding registration, improves production efficiency and quality stability.
2, adopt disconnection and the path of pure photoelectric device control switch, without the need to mechanical type hard contact, can not be subject to the impact of contact wear and deterioration by oxidation, long service life, can meet high-frequency and apply for a long time.
3, SMD LED (surface-pasted light-emitting diode) is adopted to realize button cap character illumination light-emitting.Because SMD LED can adopt full-automatic attachment and welding, it can significantly reduce cost of labor, cost of parts and welding cost, and welding accurate positioning, improves production efficiency and quality stability, without the need to using the direct insertion LED of prior art.
4, moving optical assembly and fixed optics assembly adopt precision optics prism structure, comparatively accurate switch triggering Position Control can be realized, prior art is +/-0.20 ~ 0.60mm, the technology of the present invention effectively can realize the switch triggering Position Control of +/-0.10mm, higher than the trigger position precision of prior art 2 ~ 6 times, realize keyboard sense of touch quality stability.
5, switch module adopts the design that electronic component and mechanical structure are separated, and can independently assemble in process of production, is convenient to after services of product maintenance and safeguards.
Below in conjunction with drawings and Examples, photoelectric integral type mechanical axis keyboard switch module of the present invention is described further.
Accompanying drawing explanation
Fig. 1 is the structural representation of notification number for the photoelectric key board disclosed in CN2301752Y;
Fig. 2 is the structural representation of notification number for the optoelectronic peep-proof keyboard disclosed in CN2750570Y;
Fig. 3 is the decomposition chart such as axle side such as grade of photoelectric integral type mechanical axis keyboard switch module embodiment one described in the utility model;
Fig. 4 is the exploded front structure chart of photoelectric integral type mechanical axis keyboard switch module embodiment one described in the utility model;
Fig. 5 is the cutaway view not installing button cap, upper shell and spring of photoelectric integral type mechanical axis keyboard switch module embodiment one described in the utility model;
Fig. 6 is the project organization schematic diagram of photoelectric integral type mechanical axis keyboard switch module embodiment one described in the utility model;
Fig. 7 is the schematic diagram of the moving optical assembly shift position of photoelectric integral type mechanical axis keyboard switch module embodiment one described in the utility model;
Fig. 8 is the project organization schematic diagram of photoelectric integral type mechanical axis keyboard switch module embodiment two described in the utility model;
Fig. 9 is the project organization schematic diagram of photoelectric integral type mechanical axis keyboard switch module embodiment three described in the utility model;
Figure 10 is the project organization schematic diagram of photoelectric integral type mechanical axis keyboard switch module embodiment four described in the utility model;
Figure 11 is the project organization schematic diagram of photoelectric integral type mechanical axis keyboard switch module embodiment five described in the utility model;
Figure 12 is the project organization schematic diagram of photoelectric integral type mechanical axis keyboard switch module embodiment six described in the utility model;
Figure 13 is the project organization schematic diagram of photoelectric integral type mechanical axis keyboard switch module embodiment seven described in the utility model;
Figure 14 is the project organization schematic diagram of photoelectric integral type mechanical axis keyboard switch module embodiment eight described in the utility model;
Figure 15 is the project organization schematic diagram of photoelectric integral type mechanical axis keyboard switch module embodiment nine described in the utility model;
Figure 16 is the structural representation of the another kind of character illumination light-conducting system of photoelectric integral type mechanical axis keyboard switch module described in the utility model.
Embodiment
Be below the preferred example of photoelectric integral type mechanical axis keyboard switch module of the present invention, therefore do not limit protection scope of the present invention.
Embodiment one:
Please refer to Fig. 3-7, there is shown a kind of photoelectric integral type mechanical axis keyboard switch module, comprise housing 1, described housing 1 is made up of upper shell 11 and lower house 12, be installed in the button cap 2 on housing 1 top, button cap 2 upper surface is carved with character, also comprise the drive unit 3 be installed in housing 1, optoelectronic switch 4, moving optical assembly 14a and fixed optics assembly 15, described moving optical assembly 14a is installed on drive unit 3, described optoelectronic switch 4 comprises pcb board 41, be integrated in the SMD IR pipe 42 on pcb board 41, SMD IR pipe is surface-pasted infrared diode, and SMD PT pipe 43, SMD PT pipe is surface-pasted photoelectric sensor, drive unit 3 is made to drive moving optical assembly 14a to move up and down the relative position controlling moving optical assembly 14a and fixed optics assembly 15 by pressing keys cap 2, when in the coupling light sent from SMD IR pipe 42 to SMD PT pipe 43, conducting light paths, thus realize optoelectronic switch 4 path, when the light sent from SMD IR pipe 42 can not be coupled in SMD PT pipe 43, light path disconnects, thus realize optoelectronic switch 4 and disconnect, described SMD IR pipe 42 encapsulates for integral type with both SMD PT pipes 43 or two independent splits encapsulate.
Preferentially, described drive unit 3 comprises the spring 31 be installed in housing 1, key axle 32, one end of described spring 31 contacts with housing 1, the other end of spring 31 is connected with one end of key axle 32, described moving optical assembly 14a is fixed on the bottom of key axle 32, will by button cap 2 toward when pressing down when pointing, spring 31 compresses downwards, the moving optical assembly 14a of key axle 32 and attachment on it moves down along with spring, when moving optical assembly 14a aims at the fixed optics assembly 15 of below, conducting light paths, the coupling light sent from SMD IR pipe 42 is to SMD PT pipe 43, thus realize path.When finger unclamps by button cap, spring 31 drives key axle 32 to pop up, and moving optical assembly 14a separates with fixed optics assembly 15, and the coupling light sent from SMD IR pipe 42 less than SMD PT pipe 43, thus realizes disconnecting.
In this enforcement, described moving optical assembly 14a disconnects and the optical prism of path for controlling optoelectronic switch 4.
Furthermore, as Fig. 5, shown in Fig. 6, described moving optical assembly 14a is deflecting prism structure, it is by perpendicular 14a1, total reflection inclined-plane 14a2 and bottom surface 14a3 forms, described perpendicular 14a1 is level crossing, also can be sphere or aspheric surface, this total reflection inclined-plane 14a2 is tapered plane, also can be compound curved surface, this bottom surface 14a3 is level crossing, also can be sphere or aspheric surface, described fixed optics assembly 15 is deflecting prism structure, it is by collimation Fresnel Lenses 151, total reflection inclined-plane 152, first level crossing 153, collector lens 154 and plane 155 form, described collimating mirror 151 is aspheric surface, or multiple compound curved surface, described collector lens 154 is sphere or aspheric surface, or be optical flat, described optical flat 155 is sphere or aspheric surface, or be Fresnel surface, or multiple compound curved surface, from the light of SMD IR 42 pipe injection, Fresnel Lenses 151 through fixed optics assembly 15 collimates, light after collimation is on total reflection inclined-plane 152, penetrate from the first level crossing 153 after reflection, when moving optical assembly 14a aligns with fixed optics assembly 15, the light penetrated from the first level crossing 153 incides the perpendicular 14a1 of moving optical assembly 14a completely, reflect through total reflection inclined-plane 14a2 again, collimated ray after reflection is transferred downwards, penetrate from bottom surface 14a3, again incide in fixed optics assembly 15, assemble through its collector lens 154, again after plane 155 outgoing, converge on the sensitive face of SMD PT pipe 43, thus generation current signal.
Preferentially, as shown in Figure 7, the moving range of described moving optical assembly 14a is: the position of top is that light path is nonconducting state when spring 31 is in relaxation state and key axle 32 static lifting position; When key axle 32 be depressed into trigger light path start the critical localisation point of conducting time, be conducting light paths state, the shift motion scope that key axle 32 presses down is 0.15-10mm, and the tolerance of its conducting light paths is +/-0.10mm; Dotted line position in the middle of Fig. 7 is the centre position of key axle 32 is trigger when key axle 32 presses down 2.00-2.20mm stroke the critical localisation point that light path starts conducting, and the position below key axle 32 is the extreme position pressing down 4.00mm at key axle 32, is conducting light paths state.
Also comprise the character illumination light-conducting system 6 be installed in for throwing light on to the character on button cap 2 surface in housing 1, this character illumination light-conducting system 6 is by the SMD LED 19 be integrated on pcb board 41, i.e. surface-pasted light-emitting diode, be successively set on the collector lens 156 above described SMD LED 19, light-guiding pillar 157 and illuminating lens 158 to form, from the light that SMD LED 19 sends, converge in light-guiding pillar 157 through collector lens 156, illuminating lens 158 again above light-guiding pillar reflects and exports, and forms the emergent light that beam angle is 2 θ.According to the height of keycap and the size of character, can by suitably regulating the radian of illuminating lens 158 to regulate the size of 2 θ, generally, 2 θ are between 60 degree of-160 degree.Here preferably collector lens 156 is Fresnel Lenses, and because the angle changing rate of 2 θ is large, the illuminating lens 158 of collector lens 156 and top can have other to select, and they also can be plane, or even concave surface, as shown in Figure 7.The tooth of the collimation Fresnel Lenses 151 of fixed optics assembly 15 also can be designed to bastard according to the situation of machining accuracy in addition, as shown in Figure 5 and Figure 6, or is serration, as shown in Figure 7.
Described SMD IR pipe 42, SMD PT pipe 43 and SMD LED 19 all have packaging silicon rubber above.
Embodiment two:
As shown in Figure 8, described fixed optics assembly 15 is a prism 25 of collimation and deflecting prism structure, and be by plane 251, non-spherical lens 253 and total reflection inclined-plane 252 form.In the present embodiment, moving optical assembly 14a, and identical with embodiment one for the button cap character illumination light-conducting system 6 thrown light on to the character on button cap 2 surface.Fixed optics assembly 15 has different designs, and the Fresnel Lenses 151 originally for collimating has changed plane 251 into, and the first level crossing 153 has changed the non-spherical lens 253 of collimating effect into, and total reflection inclined-plane 252 is identical with embodiment one, remains unchanged.Because the processing of aspheric processing than Fresnel Lenses is more prone to, and it is lower to the required precision of process tool, embodiment two can reduce the requirement to processing technology, thus cut down finished cost, but because the focal length of non-spherical lens is long, numerical aperture angle is less, thus low than embodiment one of coupling efficiency.
Embodiment three:
As shown in Figure 9, described fixed optics assembly 15 is a prism 35 of collimation and deflecting prism structure, in the present embodiment, moving optical assembly 14a, and identical with embodiment one for the button cap character illumination light-conducting system 6 thrown light on to the character on button cap 2 surface.Fixed optics assembly 15 has different designs, the incidence surface 351 of prism 35 is plane, it does not play collimating effect to the light from the incidence of SMD IR pipe, total reflection curved surface 352 is X and the asymmetrical free form surface of Y-direction of inclination, it is from the quadratic surface of axle or for double tapered coefficient curved surface, plays the effect of turnover light path and collimation, through all light of free form surface 352 total reflection simultaneously, along the direction perpendicular to the second level crossing 353, parallel injection.When moving assembly 14a presses down 2.00-2.20mm stroke from the position that button is static, trigger light path and start conducting.The scope of button pressed between stroke 2.00mm-4mm, light path is all in the state of conducting.As moving optical assembly 14a and fixation kit 35 complete matching, the parallel rays penetrated from the second level crossing 353 incides the perpendicular 14a1 of moving optical assembly completely, reflect through total reflection inclined-plane 14a2 again, collimated ray after reflection is transferred downwards, penetrates from bottom surface 14a3, again incides in fixation kit 35, assemble through its collector lens 354, again after plane 355 outgoing, converge on the sensitive face of SMDPT pipe, produce the strongest current signal.
Embodiment four:
As shown in Figure 10, described fixed optics assembly 15 is a prism 45 of collimation and deflecting prism structure, in the present embodiment, moving optical assembly 14a, and identical with embodiment one for the button cap character illumination light-conducting system 6 thrown light on to the character on button cap 2 surface.Fixed optics assembly 15 has different designs, the incidence surface 451 of prism 45 is Fresnel collimating lens, collimating effect is played to the light from the incidence of SMD IR pipe, total reflection inclined-plane 452 is clinoplain, play the effect of turnover light path, the all light reflected through total reflection inclined-plane 452, along the parallel injection in direction perpendicular to perpendicular 453.When moving assembly 14a presses to 2.00-2.20mm stroke from the position that button is static, trigger light path and start conducting.The scope of button pressed between stroke 2.00mm-5mm, light path is all in the state of conducting.As moving optical assembly 14a and fixation kit 45 complete matching, the light penetrated from perpendicular 453 incides the perpendicular 14a1 of moving optical assembly completely, reflect through total reflection inclined-plane 14a2 again, collimated ray after reflection is transferred downwards, penetrate from bottom surface 14a3, again incide in fixation kit 45, in the present embodiment, the plane of incidence 454 changes plane into, 455 Fresnel Lenses changing optically focused into, convergence of rays on the sensitive face of SMDPT pipe 18, is produced the strongest current signal by it.
Embodiment five:
In above-described embodiment 1-4, when button loosens completely, spring 31 is without compression, and when moving optical assembly 14a is in uppermost position, light path is all in off-state, and when key axle 32 presses to 2.00-2.20mm stroke, triggers light path and start conducting.Key axle 32 presses down the scope between stroke 2.00mm-4mm, and light path is all in the state of conducting.Then by conducting and off-state conversely, button loosens the present embodiment completely, and when moving optical assembly 14a is in uppermost position, light path is in conducting state.And when key axle 32 presses to 2.00-2.20mm stroke, trigger light path and start to disconnect.Key axle 32 presses down the scope between stroke 2.00mm-4mm, and light path is all in the state of disconnection.Figure 11 is the switch designs principle of the present embodiment, its all collimation, turnover, substantially identical with specific embodiment one with convergence yoke, as shown in figure 11, described fixed optics assembly 15 is a prism 55 of collimation and deflecting prism structure, its plane of incidence 551 is collimation Fresnel Lenses, 552 is total reflection inclined-plane, 553 is perpendicular, 554 is optically focused non-spherical lens, 555 is plane, unique difference be that the reflecting slant 552 of right side prism has exceeded 2mm than specific embodiments 1, when button loosens completely, the directional light penetrated from perpendicular 553 just incides moving optical assembly 14a, can converge in SMD PT pipe 43 after total reflection turnover and optically focused, thus generation current signal, light path is in conducting state.And when button pressed is to 2.00-2.20mm stroke, the directional light penetrated from perpendicular 553 can not incide moving optical assembly 14a, the current signal that SMD PT pipe 43 li does not just have focal beam spot to produce, light path is in off-state.
Embodiment six:
Moving optical assembly in above-described embodiment 1-5 is all the mode adopting deflecting prism 14a, controls moving up and down of one piece of deflecting prism exactly, thus realizes conducting and disconnection.Following specific embodiments, moving optical assembly adopts the mode of mechanical shutter (anti-dazzling screen), realizes conducting and the disconnection of light path by moving up and down anti-dazzling screen.Photoelectric integral type mechanical axis keyboard switch modular structure involved in the present invention, as shown in figure 12, its fixed optics assembly 15 respectively has a prism for the right and left to the switch designs principle of its present embodiment, is respectively prism 65 and prism 66.Prism 65 is collimation and deflecting prism system, and its Fresnel Lenses 651 first by the collimate light of SMD IR pipe 42, and then reflects turnover by total reflection inclined-plane 652, then is penetrated by perpendicular 653.Mechanical shutter 14b and key axle 32 link together, its along with spring 31 press down or loosen time, down or up move, thus realize blocking or letting pass prism 65 outgoing directional light.When button loosens, when mechanical shutter 14b is in top, the outgoing directional light of shutter to prism 65 is unobstructed, and the directional light at this time penetrated from perpendicular 653 can enter into the prism 66 on the left side.Prism 66 is turnover and light-collecting prism system, its total reflection curved surface 662 is X and the asymmetrical free form surface of Y-direction, it plays turnover and converging action simultaneously, concrete form can be from axle quadratic surface or be double tapered coefficient curved surface, incident ray is carried out total reflection and turns back by it, and converge in the SMD PT pipe 43 below prism, thus generation current signal, make light path be in conducting state.Work as button pressed, when mechanical shutter 14b is in below, shutter blocks prism 65 outgoing directional light, and at this time do not have focal beam spot in SMD PT pipe 43, so there is no current signal, light path is in off-state.
Embodiment seven:
In specific embodiment six, when button (i.e. drive unit 3) loosens, when mechanical shutter is in the top, light path is in conducting state.Photoelectric integral type mechanical axis keyboard switch modular structure involved in the present invention, its specific embodiments seven by conducting and off-state conversely, as shown in figure 13.Compared with embodiment six, specific embodiments seven also uses the mode of mechanical shutter, the turnover of its prism is substantially identical with embodiment six with the structure of condenser system, its fixed optics assembly 15 respectively has a prism for the right and left, be respectively prism 75 and prism 76, just prism 75 and prism 76 are all than the prism 65 in specific embodiments six and prism 66 height 2mm.When button loosens completely, moving optical assembly 14a is when uppermost position, and mechanical shutter 14b has blocked the directional light penetrated from perpendicular 753, and light path is in off-state.And when button pressed, the directional light that mechanical shutter 14b penetrates perpendicular 753 is unobstructed, directional light enters in the prism 76 in left side, through convergence and the turnover of free form surface 762, in the SMD PT pipe 43 of convergence of rays below prism, thus generation current signal, trigger light path and be in conducting state.
Embodiment eight:
In above-mentioned all embodiments, SMD IR pipe 42 and SMD PT pipe 43 all horizontal on same pcb board, also one of them can be adopted in practical application and vertically place.As shown in figure 14, it comes to be positioned over right side by perpendicular for SMD IR pipe 42, being close to SMD IR pipe 43 is a mechanical shutter 14b, be a free curved surface prism 85 on the left of mechanical shutter, the light from the incidence of SMD IR pipe carries out transferring and converges in the SMD PT pipe below prism by its free form surface reflecting surface 852.Control moving up and down of mechanical shutter 14b by spring, just can realize disconnection and the conducting of light path.Described free form surface reflecting surface 852, it is that X and Y-direction are asymmetrical from axle quadratic surface, or is double tapered coefficient curved surface, and it satisfies condition: the surface of emission of SMD IR pipe, and the receiving surface of SMD PT pipe, be the image corresponding relation of conjugation relative to this curved surface.
Embodiment nine:
In the present embodiment, as shown in figure 15, come to be positioned over left side by perpendicular for SMD PT pipe 43, being close to SMD PT pipe 43 is a mechanical shutter 14b, it is a free curved surface prism 95 on the right side of mechanical shutter, position near SMT IR pipe 42 below this prism is a Fresnel collimating lens 951, light from the incidence of SMD IR pipe 42 carries out collimating and parallelly incides on freely curved face total reflection face 952 by it, freely curved face total reflection face 952 have concurrently turnover and assemble effect, its by the light ray bending of parallel incidence and converge to left side SMD PT pipe 43 receiving surface on.Control moving up and down of mechanical shutter 14b by spring, disconnection and the conducting of light path can be realized.Described free form surface reflecting surface 952, it is that X and Y-direction are asymmetrical from axle quadratic surface, or is double tapered coefficient curved surface.
Embodiment ten:
Above-mentioned all specific embodiments, SMD LED 19 (the monochromatic or RGB 3 look) light source of described character illumination light-conducting system 6 is all positioned on pcb board 41, its light sent, converge in light-guiding pillar through collector lens, illuminating lens refraction again above light-guiding pillar exports, form the emergent light that beam angle is 2 θ, illuminate the character on button cap 2.This enforcement gives another kind of character illumination light-conducting system, as shown in figure 16, SMD LED 19 (monochromatic or RGB 3 look) light source is arranged on pcb board 41, be positioned at the lower central position of key axle 32, the central shaft of key axle 32 adopts transparent or translucent material to make, make itself to become a light pipe, the light that SMD LED 19 sends is directly coupled in key axle 32, key axle 32, light pipe carry out mixed light to incident ray and upwards conduct, export from the upper side, thus the button cap 2 of illumination top.
Above-described embodiment is the present invention's preferably execution mode; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (20)
1. a photoelectric integral type mechanical axis keyboard switch module, comprise housing (1), be installed in the button cap (2) on housing (1) top, it is characterized in that: also comprise the drive unit (3) be installed in housing (1), optoelectronic switch (4), moving optical assembly (14a) and fixed optics assembly (15), described moving optical assembly (14a) is installed on drive unit (3), described optoelectronic switch (4) comprises pcb board (41), the SMD IR be integrated on pcb board (41) manages (42) and SMD PT manages (43), drive unit (3) is made to drive moving optical assembly (14a) to move up and down the relative position controlling moving optical assembly (14a) and fixed optics assembly (15) by pressing keys cap (2), when the coupling light sent from SMD IR pipe (42) is managed in (43) to SMD PT, conducting light paths, thus realize optoelectronic switch (4) path, when the light sent from SMD IR pipe (42) can not be coupled in SMD PT pipe (43), light path disconnects, thus realize optoelectronic switch (4) disconnection.
2. photoelectric integral type mechanical axis keyboard switch module according to claim 1, it is characterized in that: described drive unit (3) comprises the spring (31) be installed in housing (1), key axle (32), one end of described spring (31) contacts with housing (1), the other end of spring (31) is connected with one end of key axle (32), and described moving optical assembly (14a) is fixed on the bottom of key axle (32).
3. photoelectric integral type mechanical axis keyboard switch module according to claim 2, is characterized in that: described moving optical assembly (14a) is disconnect and the optical prism of path or mechanical shutter for controlling optoelectronic switch (4).
4. photoelectric integral type mechanical axis keyboard switch module according to claim 1, it is characterized in that: described moving optical assembly (14a) is deflecting prism structure, it is made up of perpendicular (14a1), total reflection inclined-plane (14a2) and bottom surface (14a3), described fixed optics assembly (15) is deflecting prism structure, and it is made up of collimation Fresnel Lenses (151), total reflection inclined-plane (152), the first level crossing (153), collector lens (154) and optical flat (155).
5. photoelectric integral type mechanical axis keyboard switch module according to claim 4, it is characterized in that: from the light of SMD IR (42) pipe injection, Fresnel Lenses (151) through fixed optics assembly (15) collimates, light after collimation is on total reflection inclined-plane (152), penetrate from the first level crossing (153) after reflection, when moving optical assembly (14a) aligns with fixed optics assembly (15), the light penetrated from the first level crossing (153) is complete to be incided the perpendicular (14a1) of moving optical assembly (14a), reflect through total reflection inclined-plane (14a2) again, collimated ray after reflection is transferred downwards, penetrate from bottom surface (14a3), again incide in fixed optics assembly (15), assemble through its collector lens (154), again after plane (155) outgoing, converging to SMD PT manages on the sensitive face of (43), thus generation current signal.
6. photoelectric integral type mechanical axis keyboard switch module according to claim 2, it is characterized in that: the moving range of described moving optical assembly (14a) is: the position of top is that light path is nonconducting state when spring (31) is in relaxation state and key axle (32) static lifting position; When key axle (32) be depressed into trigger light path start the critical localisation point of conducting time, be conducting light paths state, the shift motion scope that key axle (32) presses down is 0.15-10mm, and the tolerance of its conducting light paths is +/-0.10mm.
7. photoelectric integral type mechanical axis keyboard switch module according to claim 1, it is characterized in that: described fixed optics assembly (15), by the first level crossing (153), collimating mirror (151), collector lens (154), optical flat (155) and total reflection inclined-plane (152) composition, described collimating mirror (151) is aspheric surface, or multiple compound curved surface, described collector lens (154) is sphere or aspheric surface, or be optical flat, described optical flat (155) is sphere or aspheric surface, or be Fresnel surface, or multiple compound curved surface.
8. photoelectric integral type mechanical axis keyboard switch module according to claim 4, it is characterized in that: described perpendicular (14a1) is level crossing, also can be sphere or aspheric surface, this total reflection inclined-plane (14a2) is tapered plane, also can be compound curved surface, this bottom surface (14a3) is level crossing, also can be sphere or aspheric surface.
9. photoelectric integral type mechanical axis keyboard switch module according to claim 1, is characterized in that: described SMD IR manages (42) and SMD PT and manage and to encapsulate for integral type both (43) or two independent splits encapsulate.
10. photoelectric integral type mechanical axis keyboard switch module according to claim 1, it is characterized in that: described fixed optics assembly (15) is collimation and deflecting prism structure, by plane (251), non-spherical lens (253) and total reflection inclined-plane (252) composition.
11. photoelectric integral type mechanical axis keyboard switch modules according to claim 1, it is characterized in that: described fixed optics assembly (15) is collimation and deflecting prism structure, by plane incidence surface (351), total reflection free form surface (352), second level crossing (353) forms, described total reflection free form surface (352) is from the quadratic surface of axle or for double tapered coefficient curved surface, total reflection free form surface (352) plays the effect of turnover light path and collimation simultaneously, the all light reflected through total reflection free form surface (352) penetrate along the direction perpendicular to the second level crossing (353).
12. photoelectric integral type mechanical axis keyboard switch modules according to claim 1, it is characterized in that: described fixed optics assembly (15) is collimation and deflecting prism structure, be luxuriant and rich with fragrance alunite collimating lens (451), total reflection inclined-plane (452) and perpendicular (453) form.
13. photoelectric integral type mechanical axis keyboard switch modules according to claim 1, it is characterized in that: also comprise character illumination light-conducting system (6) be installed in for throwing light on to the character on button cap (2) surface in housing (1), this character illumination light-conducting system (6) is by the SMD LED (19 be integrated on PCB plate (41), surface-pasted light-emitting diode), be successively set on the collector lens (156) of described SMD LED (19) top, light-guiding pillar (157) and illuminating lens (158) composition.
14. photoelectric integral type mechanical axis keyboard switch modules according to claim 13, it is characterized in that: the light that described SMD LED (19) sends, converge in light-guiding pillar (157) through collector lens (156), export from the refraction of the illuminating lens (158) on light-guiding pillar (157) top again, between the light angle penetrated from illuminating lens (158) is spent at 60 degree-160.
15. photoelectric integral type mechanical axis keyboard switch modules according to claim 2, it is characterized in that: when button loosens completely, when moving optical assembly (14a) is in uppermost position, light path is in conducting state; And when key axle (32) presses to 2.00-2.20mm stroke, triggering light path starts to disconnect; Key axle (32) presses down the scope between stroke 2.00mm-5mm, and light path is all in the state of disconnection.
16. photoelectric integral type mechanical axis keyboard switch modules according to claim 3, it is characterized in that: described fixed optics assembly (15) respectively has a prism for the right and left, be two prisms (65, 66), prism (65) is collimation and deflecting prism system, SMD IR is first managed the collimate light of (42) by its Fresnel Lenses (651), and then by total reflection inclined-plane (652) reflection turnover, again by perpendicular (653) injection, mechanical shutter (14b) and key axle (32) link together, its along with spring (31) press down or loosen time, down or up move, thus realize blocking or letting pass prism (65) outgoing directional light.
17. photoelectric integral type mechanical axis keyboard switch modules according to claim 3, it is characterized in that: described fixed optics assembly (15) respectively has a prism for the right and left, be respectively two prisms (75, 76), when button loosens completely, moving optical assembly (14a) is when uppermost position, mechanical shutter (14b) has blocked the directional light penetrated from perpendicular (753), light path is in off-state, and when button pressed, the directional light that mechanical shutter (14b) penetrates perpendicular (753) is unobstructed, directional light enters in the prism (76) in left side, through convergence and the turnover of free form surface (762), the SMD PT of convergence of rays below prism manages in (43), thus generation current signal, trigger light path and be in conducting state.
18. photoelectric integral type mechanical axis keyboard switch modules according to claim 3, it is characterized in that: described SMD IR manages (42) perpendicular coming and is positioned over right side, being close to SMD IR pipe (43) is a mechanical shutter (14b), it is a free curved surface prism (85) on the left of mechanical shutter, its free form surface reflecting surface (852) is undertaken transferring by managing (42) incident light from SMD IR and converges to SMD PT pipe (43) below prism, moving up and down of mechanical shutter (14b) is controlled by spring (31), just can realize disconnection and the conducting of light path, described free form surface reflecting surface (852), it is that X and Y-direction are asymmetrical from axle quadratic surface, or be double tapered coefficient curved surface, it satisfies condition: the surface of emission of SMD IR pipe, and the receiving surface of SMD PT pipe, relative to the image corresponding relation that this curved surface is conjugation.
19. photoelectric integral type mechanical axis keyboard switch modules according to claim 3, it is characterized in that: described SMD PT manages (43) perpendicular coming and is positioned over left side, being close to SMD PT pipe (43) is a mechanical shutter (14b), it is a free curved surface prism (95) on the right side of mechanical shutter, the position that below this prism, close SMT IR manages (42) is a Fresnel collimating lens (951), it will be managed (42) incident light from SMD IR and carries out collimating and parallelly incide freely curved face total reflection face (952), the effect that freely curved face total reflection face (952) has turnover concurrently and assembles, its by the light ray bending of parallel incidence and converge to left side SMD PT manage (43) receiving surface on, moving up and down of mechanical shutter (14b) is controlled by spring (31), disconnection and the conducting of light path can be realized, described free form surface reflecting surface (952), it is that X and Y-direction are asymmetrical from axle quadratic surface, or be double tapered coefficient curved surface.
20. photoelectric integral type mechanical axis keyboard switch modules according to claim 2, it is characterized in that: also comprise character illumination light-conducting system (6) be installed in for throwing light on to the character on button cap (2) surface in housing (1), this character illumination light-conducting system (6) also can be designed to following structure: SMD LED (19) is positioned over the lower central position of key axle (32), the central shaft of key axle (32) adopts transparent or translucent material to make, make itself to become a light pipe, the light that SMDLED (19) sends is directly coupled to key axle (in 32), key axle (32), light pipe carries out mixed light to incident ray and upwards conducts, export from the upper side.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520118887.4U CN204539108U (en) | 2015-02-27 | 2015-02-27 | A kind of photoelectric integral type mechanical axis keyboard switch module |
| PCT/CN2015/075304 WO2016134560A1 (en) | 2015-02-27 | 2015-03-27 | Switch module for photoelectric integral mechanical axis keyboard |
| US15/124,681 US9838006B2 (en) | 2015-02-27 | 2015-03-27 | Switch module of photoelectric integrated mechanical shaft keyboard |
| KR1020167022873A KR101745435B1 (en) | 2015-02-27 | 2015-03-27 | Switch module of photoelectric integrated mechanical shaft keyboard |
| EP15882998.6A EP3264602A4 (en) | 2015-02-27 | 2015-03-27 | Switch module for photoelectric integral mechanical axis keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520118887.4U CN204539108U (en) | 2015-02-27 | 2015-02-27 | A kind of photoelectric integral type mechanical axis keyboard switch module |
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| Publication Number | Publication Date |
|---|---|
| CN204539108U true CN204539108U (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520118887.4U Withdrawn - After Issue CN204539108U (en) | 2015-02-27 | 2015-02-27 | A kind of photoelectric integral type mechanical axis keyboard switch module |
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| CN (1) | CN204539108U (en) |
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