CN101247120A - Press keys for coal mine information device - Google Patents
Press keys for coal mine information device Download PDFInfo
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- CN101247120A CN101247120A CNA2008100657997A CN200810065799A CN101247120A CN 101247120 A CN101247120 A CN 101247120A CN A2008100657997 A CNA2008100657997 A CN A2008100657997A CN 200810065799 A CN200810065799 A CN 200810065799A CN 101247120 A CN101247120 A CN 101247120A
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- keycap
- keycap main
- receiving element
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Abstract
A coal mine information device press key comprises the following components: an emergent ray axis (311) on the light transmitting device (31) and a receiving ray axis (314) on the light receiving device (32); a lens part (20) which is taken as one part of the explosion-proof casing and is arranged on the upper part of the light transmitting device (31) and the light receiving device (32); and a key cap body (15) which has unique structure and is arranged at the upper side of the lens part (20), and when the key cap body (15) is at the first position, the light transmitting part (11) leads to the transmitting light to the outside of the receiving ray axis (314). The key cap body (15) at the second position when it is pressed the transmitting ray transmits into the light receiving device (32) along the receiving light axis (314) and the light receiving device (32) is accessed into the press key circuit thereby realizing the function of the press key. The structure of the press key of the invention can satisfy the requirement for preventing explosion in the electric device used in the explosive gas atmosphere.
Description
Technical field
The present invention relates between user and the computer device of mutual input, the particularly input unit of hand switch, relating in particular to by photovoltaic is the code input with the displacement conversion of parts, is fit to explosive gas atmosphere and uses, and realizes the device of keypress function.
Background technology
In the prior art, button that uses in conventional environment or the keyboard of being made up of button are various in style, innumerable, use but these keyboards mostly are not suitable for explosive gas atmosphere.
For example under the coal mine, the button of some explosion-proof electric apparatuses is according to the standard-required of electric equipment under the explosion gas environment, make a very long button arbor, telescopic slide in corresponding arbor cover has the slit between button arbor and the arbor cover, and the end of arbor is provided with switch electric shock point.Because stipulated the arbor of this slip in the standard certain length must be arranged, the gas that is comprised in the electrical equipment cavity is at explosion time like this, and the explosion gas that overflows along very long slit has reduced danger, just can not cause further harm.So this button will have certain volume and intensity relatively.Though the structure of this button can dustproof and waterproof,, be to seem too heavy really if be used as the keyboard unit of massaging device.
Keyboard of the prior art mostly is an electric contact, or capacitive way.Even if some are arranged, but also just luminous for button about the application of light on keyboard, be convenient to dark surrounds and use, CN03107335.2 Chinese invention patent for example, the technical scheme of disclosed a kind of " keyboard structure " by name is exactly like this.
Still it is little not to be fit to the volume that massaging device is used under the explosion gas environment in the prior art, in light weight, good hand touch, satisfy the button of explosion-proof regulation, people wish to have a kind of button and keyboard that uses on common computer, the mobile phone that be similar to, be used for electric equipment under the explosion gas environment, especially on the massaging device, realize the human-computer dialogue input.
Summary of the invention
The technical problem to be solved in the present invention is, avoids above-mentioned the deficiencies in the prior art part and proposes the button that a kind of coal information device is used, and button of the present invention is divided into three layers:
One, top layer is a keycap assembly of realizing the man-machine interaction input, and this keycap assembly promptly will be realized man-machine interaction, again with finish the electric part insulation of finally finishing keypress function, play the dustproof and waterproof effect again;
Two, the intermediate layer is a dull and stereotyped light penetrating object, can make with implosion guard, promptly wants to transmit signal, is connected with the shell that uses device of the present invention again and realizes the flame proof function;
Three, bottom is one group of photoelectric device, and emergent ray passes the dull and stereotyped light penetrating object in intermediate layer, and whether directive keycap assembly is pressed according to the keycap assembly then, and whether the decision emergent ray again passes intermediate layer along receiving ray axis, penetrates the light echo receiving device;
Light receiving element conducting during by illumination, end during unglazed the photograph, light receiving element is inserted key circuit, just can realize keypress function, button especially of the present invention is formed after the keyboard group, area is little, good hand touch, dust seal is similar to the button and the keyboard that use on common computer, the mobile phone, main is to meet explosion-proof regulation, is adapted at the big occasion of humidity, coal dust and uses.
The present invention realizes by adopting following technical scheme:
Manufacture and design a kind of coal information device button, have three kinds of execution modes at least, first execution mode comprises:
One light emitting devices and a light receiving element, described light emitting devices has the emergent light bobbin, and light receiving element has the reception ray axis;
One lens section, described lens section is positioned at the top of light emitting devices, light receiving element;
One keycap assembly is positioned at the place ahead of lens section, and described keycap assembly comprises that fixed part, bending part, keycap main body and photoconduction end portion;
Described bending part connecting key cap main body; The connection photoconduction is set under the described keycap main body ends portion;
Described fixed part is fixed, and the keycap main body is in the primary importance that is not stressed, and described photoconduction ends the resistance light body blocking-up emergent ray of portion;
Described keycap main body is in the second place that is pressed, and photoconduction ends portion in company with the displacement of keycap main body, described light emitting devices end the transmittance section of portion along the emergent ray of emergent light bobbin outgoing by photoconduction, inject light receiving element along receiving ray axis.
In the first embodiment: the place ahead of described light receiving element is provided with astigmatic shielded-plate tube along receiving ray axis;
First light-reflecting portion and second light-reflecting portion are set under the described keycap main body, between first light-reflecting portion and second light-reflecting portion, have reflective axle and photoconduction to end portion.
In the first embodiment:
Described bending part itself has under elasticity or the keycap main body Flexible element is set; One end of described Flexible element withstands on the keycap main body, and when the keycap main body was not stressed, Flexible element eject key cap main body made the keycap main body be positioned at primary importance;
Described Flexible element comprises spring, extension spring, shell fragment, elastic rubbery body, elastic mechanism.
Second execution mode comprises:
One light emitting devices and a light receiving element, described light emitting devices has the emergent light bobbin, and light receiving element has the reception ray axis;
One lens section, described lens section is positioned at the top of light emitting devices, light receiving element;
One keycap assembly is positioned at the place ahead of lens section, and described keycap assembly comprises fixed part, bending part, keycap main body and light guide part;
Described bending part connecting key cap main body; Described keycap main body is arranged with the light guide part;
Described fixed part is fixed, and the keycap main body is in the primary importance that is not stressed, and the emergent ray of described smooth guide part refraction passes into others' hands and receiving outside the ray axis;
Described keycap main body is in the second place that is pressed, and the light guide part is in company with the displacement of keycap main body, and the emission light along the outgoing of emergent light bobbin of described light emitting devices is reflected by the light guide part, injects light receiving element along receiving ray axis.
In second execution mode:
The place ahead of described light receiving element is provided with astigmatic shielded-plate tube along receiving ray axis;
Under the described keycap main body second light-reflecting portion is set, second light-reflecting portion is in the face of reflective axle.
Described smooth guide part has mobile light-reflecting portion, and during in the second place that is pressed, the emergent ray of mobile light-reflecting portion refraction overlaps with reflective in the keycap main body.
Described bending part itself has under elasticity or the keycap main body Flexible element is set; One end of described Flexible element withstands on the keycap main body, and when the keycap main body was not stressed, Flexible element eject key cap main body made the keycap main body be positioned at primary importance;
Described Flexible element comprises spring, extension spring, shell fragment, elastic rubbery body, elastic mechanism.
The 3rd execution mode comprises:
One light emitting devices and a light receiving element, the emergent light bobbin of described light emitting devices and the reception ray axis of light receiving element become one first angle, and described first angle is greater than 30 °;
One lens section, described lens section is positioned at the place ahead of light emitting devices, light receiving element, becomes one second angle with light emitting devices, and described second angle is less than 75 °;
One keycap assembly is positioned at the place ahead of lens section, and described keycap assembly comprises fixed part, bending part, keycap main body and photo-emission part;
Described bending part connecting key cap main body; Described keycap main body is arranged with photo-emission part;
Described fixed part is fixed, and when the keycap main body was not stressed, the minute surface of described photo-emission part had first distance L apart from the mirror surface of lens section, is reflected along the emergent ray of emergent light bobbin directive photo-emission part, and reflection ray passes into others' hands and receiving outside the ray axis;
After described keycap main body is pressed, the photo-emission part displacement, the emergent ray along the outgoing of emergent light bobbin of described light emitting devices is reflected by photo-emission part, and reflection ray is injected light receiving element along receiving ray axis.
In the 3rd execution mode:
There is the cushion block body on described photo-emission part next door, and after the keycap main body was pressed, the surface of cushion block body contact optical lens section made the keycap main body be in the second place.
Described bending part has elasticity; When described bending part was not stressed in the keycap main body, the eject key cap main body made the keycap main body be in primary importance.
Perhaps described keycap main body connects Flexible element; When described Flexible element is not stressed in the keycap main body, the eject key cap main body, the minute surface that makes photo-emission part has first distance L 1 apart from the mirror surface of lens section;
After the keycap main body was pressed, Flexible element was depressed into terminal location, and the minute surface of photo-emission part is second distance L2 apart from the surface of lens section at this moment;
Described Flexible element comprises spring, extension spring, shell fragment, elastic rubbery body, elastic mechanism.
In the respective embodiments described above, a described light emitting devices and a light receiving element are installed on supporting part, and described light receiving element is electrically connected in key circuit.
Compared with prior art, whether the present invention embodies button and presses, and is not switching on and off on directly electric, neither as capacitance keyboard, the size by electric capacity realize, because lens section of the present invention is very thick, about 10mm, utilize capacitance principle to be difficult to realize; The present invention utilizes the break-make of light signal to realize on off state, and signal optical source of the present invention and light receiving element all are arranged within the shell of explosion-proof electric apparatus, have solved explosion-proof problem; One light-passing board combines with the shell of explosion-proof electric apparatus by requirement of explosion proof, and the path of the emergent ray of signal optical source is provided again simultaneously; Whether the structure in the one keycap main body makes home position of the present invention and determine emergent ray can penetrate depressed position gets back to light receiving element; Light receiving element be utilized to realize switching function by rayed conducting and no rayed by two states, thereby finish man-machine interaction input.
Volume of the present invention is little, good hand touch, and the dustproof and waterproof anticorrosion, the keyboard typing that meets people is accustomed to, and is adapted at using in the explosive gas atmosphere.
Description of drawings
Fig. 1 is the schematic diagram of coal information device of the present invention with button the 3rd execution mode keycap main body and Flexible element assembling;
Fig. 2 is that coal information device of the present invention uses button the 3rd execution mode keycap main body when primary importance, the schematic diagram that lens section combines with electric appliance casing;
Fig. 3 is that coal information device of the present invention uses button the 3rd execution mode keycap main body when primary importance, the schematic diagram of Flexible element form;
Fig. 4 is a coal information device button of the present invention, and the 3rd execution mode keycap main body is when the second place that is pressed, and emergent ray is reflected into the schematic diagram of light receiving element;
Fig. 5 is a coal information device of the present invention with button the 3rd execution mode keycap main body when the second place that is pressed, and emergent ray is reflected into light receiving element, the schematic diagram of Flexible element form;
Fig. 6 is the schematic diagram of coal information device of the present invention with button the 3rd execution mode keycap main body difference in height when the primary importance and the second place;
Fig. 7 is the schematic diagram of coal information device of the present invention with a kind of fixed form of fixed part of button keycap main body;
Fig. 8 is that coal information device of the present invention is used in the button, at Fig. 7 fixed part mode, and the corresponding form schematic diagram of lens section;
Fig. 9, Figure 10 are that coal information device of the present invention is used in the button, at Fig. 7 fixed part mode, and the schematic diagram of other two kinds of caulking groove forms of lens section;
Figure 11 is that coal information device of the present invention is used in the button, at Fig. 7 fixed part mode, and after lens section and the assembling of keycap main body, the schematic diagram of keycap main body when primary importance;
Figure 12 is that coal information device of the present invention is used in the button, at Fig. 7 fixed part mode, and after lens section and the assembling of keycap main body, the schematic diagram of keycap main body when being pressed the second place;
Figure 13 is coal information device of the present invention button the 3rd execution mode, and the fixed part of keycap main body is Fig. 7 mode, the schematic diagram when lens section is connected with electric appliance casing,
Figure 14 is that the fixed part of third embodiment of the invention keycap main body is a flat-crushing type, the schematic diagram of keycap main body when primary importance;
Figure 15 is that the fixed part of third embodiment of the invention keycap main body is Fig. 7 mode, and the schematic diagram of two above keycap main bodys is set on the lens section;
Figure 16 is that the fixed part of third embodiment of the invention keycap main body is a flat-crushing type, be provided with on the lens section two above keycap main bodys schematic diagram;
Figure 17 is coal information device of the present invention covers setting on electrical equipment with button a schematic diagram;
Figure 18 is coal information device of the present invention covers setting and explosion-proof electric apparatus integral body on electrical equipment with button a schematic diagram;
Figure 19 is coal information device of the present invention inserts key circuit with light receiving element in the button an electric principle schematic;
Figure 20 is coal information device of the present invention inserts the electric principle of power supply with light emitting devices in the button a schematic diagram;
Figure 21 is a coal information device of the present invention with one of the embodiment of button in the button or keyboard scan integrated circuit schematic diagram;
Figure 22 is first execution mode of the present invention, the principle schematic of keycap main body when primary importance;
Figure 23 is first execution mode of the present invention, and photoconduction ends the schematic diagram of one of embodiment of portion;
Figure 24 is first execution mode of the present invention, the principle schematic of keycap main body when the second place that is pressed;
Figure 25 is second execution mode of the present invention, the principle schematic of keycap main body when primary importance;
Figure 26 is second execution mode of the present invention, the schematic diagram of light guide part;
Figure 27 is second execution mode of the present invention, the principle schematic of keycap main body when the second place that is pressed.
Embodiment
Below in conjunction with embodiment shown in the drawings the present invention is further described in detail.
Manufacture and design a kind of coal information device button, have three kinds of execution modes at least.
As shown in figure 22, first execution mode of the present invention comprises:
One light emitting devices 31 and a light receiving element 32, described light emitting devices 31 has emergent light bobbin 311, and light receiving element 32 has the ray axis 314 of reception.
One lens section 20, described lens section 20 is positioned at the top of light emitting devices 31, light receiving element 32.
One keycap assembly 10 is positioned at the place ahead of lens section 20, and described keycap assembly 10 comprises that fixed part 16, bending part 14, keycap main body 15 and photoconduction end portion 17.
Described bending part 14 connecting key cap main bodies 15; Described keycap main body is provided with the connection photoconduction for 15 times and ends portion 17.
As shown in figure 23, described photoconduction ends the only last connecting portion 171 of leading of portion 17 and is connected with keycap main body 15, and photoconduction ends leading of portion 17 and ends bottom 173 in optimal design scheme, is a contact-making surface, also plays position-limiting action.
Described fixed part 16 is fixed, and keycap main body 15 is in the primary importance that is not stressed, and described photoconduction ends the resistance light body blocking-up emergent ray of portion 17, and described resistance light body is meant other parts of removing transmittance section 172, and is all light tight.
As shown in figure 24, the second place that described keycap main body 15 is being pressed, photoconduction ends portion 17 in company with 15 displacements of keycap main body, lead the end face that ends bottom 173 contact lens portions 20, this moment described light emitting devices 31 end the transmittance section 172 of portion 17 along the emergent ray of emergent light bobbin 311 outgoing by photoconduction, inject light receiving element 32 along receiving ray axis 314.
The place ahead of described light receiving element 32 is provided with astigmatic shielded-plate tube 33 along receiving ray axis 314, whether the effect that light shield pipe 33 is set can accurately be distinguished emergent ray and fall into and receive ray axis 314, have only accurately to fall into the light that receives ray axis 314, just can be by light shield pipe 33.
Can also apply light absorbent on light shield pipe 33 inwalls, the light that every oblique fire enters light shield pipe 33 all is absorbed, and the light that has only direct projection to enter light shield pipe 33 just can pass light shield pipe 33, is radiated on the light receiving element 32.
The method also is applicable to other execution modes.
The place ahead of described light emitting devices 31 can be provided with luminous shielded-plate tube (not shown) along emergent light bobbin 311, and a miniature mounting of telescope also can be set, and makes emergent ray reduce the angle of divergence.
Described keycap main body is provided with first light-reflecting portion 121 and second light-reflecting portion 122 for 15 times, reflective axle 318 is arranged between first light-reflecting portion 121 and second light-reflecting portion 122, and photoconduction ends portion 17.
Best, second light-reflecting portion 122 and reception ray axis 314 angles at 45, first light-reflecting portion 121 and emergent light bobbin 311 angles at 45.
Described bending part 14 itself has elasticity or the keycap main body is provided with Flexible element 18 15 times; One end of described Flexible element 18 withstands on the keycap main body 15, and when keycap main body 15 was not stressed, Flexible element 18 eject key cap main bodies 15 made keycap main body 15 be positioned at primary importance.
Described Flexible element 18 comprises spring, extension spring, shell fragment, elastic rubbery body, elastic mechanism.
In Figure 22, the example shown in Figure 24, Flexible element 18 is a shell fragment.
In Figure 22, the example shown in Figure 24, lens section 20 is combined with electric appliance casing 60 by briquetting 81, realizes explosion prevention function.Between lens section 20 and the electric appliance casing 60 lower gasket 83 is arranged, set bolt 84 combines briquetting 81 with electric appliance casing 60, fixed part 16 is both as the support of keycap main body 15, also can play the function of Upper gasket, after being compressed by briquetting 81, keycap main body 15 inside are isolated from the outside, thereby have the dustproof and waterproof function.
Second execution mode of the present invention comprises as shown in figure 25:
One light emitting devices 31 and a light receiving element 32, described light emitting devices 31 has emergent light bobbin 311, and light receiving element 32 has the ray axis 314 of reception.
One lens section 20, described lens section 20 is positioned at the top of light emitting devices 31, light receiving element 32.
One keycap assembly 10 is positioned at the place ahead of lens section 20, and described keycap assembly 10 comprises fixed part 16, bending part 14, keycap main body 15 and light guide part 19.
Described bending part 14 connecting key cap main bodies 15; Described keycap main body 15 is arranged with light guide part 19.
Described fixed part 16 is fixed, and keycap main body 15 is in the primary importance that is not stressed, and the emergent ray of described smooth guide part 19 refractions passes into others' hands and receiving outside the ray axis 314.
As shown in figure 26, connecting portion 191 is connected with keycap main body 15 on the guiding of light guide part 19, and the guiding bottom 194 of light guide part 19 is a contact-making surface in optimal design scheme, and guiding middle part 193 also is a contact-making surface.
Described keycap main body is provided with second light-reflecting portion 122 for 15 times; Second light-reflecting portion 122 is in the face of reflective axle 318, and described smooth guide part 19 has mobile light-reflecting portion 192, and during in the second place that is pressed, the emergent ray of mobile light-reflecting portion 192 refractions overlaps with reflective 318 in keycap main body 15.
Best, second light-reflecting portion 122 and reception ray axis 314 angles at 45, mobile light-reflecting portion 192 and emergent light bobbin 311 angles at 45.
As shown in figure 27, described keycap main body 15 is in the second place that is pressed, and light guide part 19 is in company with 15 displacements of keycap main body, and bottom 194 and the end face of guiding middle part 193 difference contact lens portions 20 and the end face of second light-reflecting portion 122 lead.
At this moment, the emission light along 311 outgoing of emergent light bobbin of described light emitting devices 31 is reflected by light guide part 19, injects light receiving element 32 along receiving ray axis 314.
Identical with first execution mode, the place ahead of described light receiving element 32 is provided with astigmatic shielded-plate tube 33 along receiving ray axis 314, the effect that light shield pipe 33 is set is can accurately distinguish emergent ray whether to fall into reception ray axis 314, have only accurately to fall into the light that receives ray axis 314, just can be by light shield pipe 33.
Described bending part 14 itself has elasticity or the keycap main body is provided with Flexible element 18 15 times; One end of described Flexible element 18 withstands on the keycap main body 15, and when keycap main body 15 was not stressed, Flexible element 18 eject key cap main bodies 15 made keycap main body 15 be positioned at primary importance.
Described Flexible element 18 comprises spring, extension spring, shell fragment, elastic rubbery body, elastic mechanism.
In Figure 25, the example shown in Figure 27, Flexible element 18 is a shell fragment.
The 3rd execution mode of the present invention such as Fig. 1～shown in Figure 16, comprising:
As Fig. 2, Fig. 4, a Figure 11～light emitting devices 31 and a light receiving element 32 shown in Figure 14,314 one-tenth one first angle 38 of the emergent light bobbin 311 of described light emitting devices 31 and the reception ray axis of light receiving element 32, described first angle 38 is greater than 30 °.
One lens section 20, described lens section 20 is positioned at the place ahead of light emitting devices 31, light receiving element 32, and with 31 one-tenth one second angle 39 of light emitting devices, described second angle 39 is less than 75 °.
One keycap assembly 10 is positioned at the place ahead of lens section 20, and described keycap assembly 10 comprises fixed part 16, bending part 14, keycap main body 15 and photo-emission part 11.
Described bending part 14 connecting key cap main bodies 15; Described keycap main body 15 is arranged with photo-emission part 11, best, photo-emission part 11 is level crossings.
As shown in Figure 2, described fixed part 16 is fixed, when keycap main body 15 is not stressed, the minute surface of described photo-emission part 11 has first distance L 1 apart from the mirror surface 21 of lens section 20, emergent ray along emergent light bobbin 311 directive photo-emission parts 11 is reflected, and the light 312 that passes into others' hands passes into others' hands and receiving outside the ray axis 314.
As Fig. 1, Fig. 3, Fig. 5, Figure 11, shown in Figure 12, described keycap main body 15 connects Flexible element 18; Described Flexible element 18 when keycap main body 15 is not stressed, eject key cap main body 15, the minute surface that makes photo-emission part 11 has first distance L 1 apart from the mirror surface 21 of lens section 20; After keycap main body 15 was pressed, Flexible element 18 was depressed into terminal location, and the minute surface of photo-emission part 11 is second distance L2 apart from the surface of lens section 20 at this moment.
Fig. 3 is the supplementary notes of Fig. 2, announcement in the keycap main body 15 flexible unit 18 of trapping, concrete is a coil spring.
As shown in Figure 4, after described keycap main body 15 is pressed, photo-emission part 11 displacements, the emergent ray along 311 outgoing of emergent light bobbin of described light emitting devices 31 is reflected by photo-emission part 11, and reflection ray is injected light receiving element 32 along receiving ray axis 314.
Fig. 5 is the supplementary notes of Fig. 4, and the coil spring of announcement is compressed to terminal location, plays the effect of cushion block body.
Fig. 6 shows the alternate position spike of keycap main body 15 when the primary importance and the second place.
Among Fig. 7, Figure 11, Figure 12, described bending part 14 itself has elasticity, and described bending part 14 is not when keycap main body 15 is stressed at this moment, and eject key cap main body 15 makes keycap main body 15 be in primary importance.Best at this moment, there is cushion block body 13 on described photo-emission part 11 next doors, and after keycap main body 15 was pressed, the surface of cushion block body 13 contact optical lens sections 20 made keycap main body 15 be in the second place.
The effect of cushion block body 13 is when making keycap main body 15 be in the second place, photo-emission part 11 is smooth, the light reflection angle is wanted accurately, because the distance of the tip to face distance photo-emission part 11 that contact with lens section 20 of cushion block body 13 designs, so the light reflection angle is a key.
Described Flexible element 18 comprises spring, extension spring, shell fragment, elastic rubbery body, elastic mechanism.Flexible element 18 is coil springs in Fig. 1, Fig. 3, Fig. 5, Fig. 6, and when being compressed to terminal location owing to coil spring, it highly is definite constant, and so the effect of having served as the cushion block body in such an embodiment, can be saved cushion block body 13 as shown in Figure 7.
In above-mentioned three kinds of execution modes, a described light emitting devices 31 and a light receiving element 32 are installed on supporting part 36, supporting part 36 can be the PCB circuit board, also can be special plastic cement skeleton, and the lead-in wire of light emitting devices 31 and light receiving element 32 is drawn from the plastic cement skeleton.
Because light emitting devices 31 and light receiving element 32 are set together, produce misoperation for fear of scattered light, best, an isolation part 35 is set between light emitting devices 31 and light receiving element 32.
The place ahead of described light emitting devices 31 can be provided with luminous shielded-plate tube (not shown) along emergent light bobbin 311, also Optical devices can be set, make emergent ray reduce the angle of divergence, for example miniature mounting of telescope just can make emergent light approximate directional light in short distance.
Described light receiving element 32 is electrically connected in key circuit.
Described Flexible element 18 can also substitute shell fragment with elastic rubbery body except using spring, shell fragment, can also use scissor elastic mechanism 15 times in the keycap main body, can also substitute spring, shell fragment with extension spring.
Described keycap main body 15 upper surfaces prepare the alphanumeric icon, and that the shape of keycap main body 15 comprises is square, circular, trapezoidal, triangle and abnormity.
Further, keycap main body 15 can be used transparent or semitransparent material, is beneficial to the present invention and uses in dark surrounds.
Fig. 7, Fig. 8, Figure 11, when fixed part 16 shown in Figure 12 is embedded in the keycap caulking groove 24, reinforce sealing with adhesive; Described keycap caulking groove 24 is arranged on the lens tray 61, and lens section 20 is connected by joint portion 23 with lens tray 61, and lens tray 61 has pallet connecting portion 62, continues and electric appliance casing 60 assemblings.
Fig. 9, Figure 10 have exemplified the square and trapezoidal sectional shape of keycap caulking groove 24, and corresponding fixed part 16 also will have the form that matches.The shape that can use is a lot, does not exemplify one by one at this.
Figure 15, shown in Figure 16 be the example of the conjuncted making of plural button of the present invention, be suitable for above-mentioned three execution modes.
Link between each keycap main body 15 or by main body linking part 151, the area of lens section 20 will enlarge, and be many key-press sharings.
Figure 17, Figure 18 are that coal information device of the present invention is provided with on electric appliance casing 60 with button 10 and the schematic diagram of explosion-proof electric apparatus 1 integral body, and lens section 20 is spacing by briquetting 81, and usefulness set bolt 84 is fastening.
Figure 19 is a kind of form that light receiving element 32 inserts key circuit, and the form that can realize is numerous, only lifts Figure 19 one example at this and is explained, and the present invention's feasibility technically is described.
What indicate " 32 " label among Figure 19 is light receiving element of the present invention, and its collector electrode connects resistance R 22, connects keyboard integrated circuit ZLG7290 shown in Figure 21 again by R22, connects the DIG1 pin.
The emitter of light receiving element 32 connects the pin SEGC of ZLG7290, and when the keycap main body 15 of correspondence was not pressed, light receiving element 32 did not have rayed, is in cut-off state, itself presented very big resistance, did not almost have electric current to flow through.ZLG7290 scans all DIG0～DIG7, SEGA～SEGH pin, does not all flow out electric current and inflow current, judges that do not have button to press this moment.
When the keycap main body 15 of light receiving element 32 correspondences is pressed, light receiving element 32 is by rayed, be in conducting state, ZLG7290 scans all DIG0～DIG7, SEGA～SEGH pin, find that DIG1 has the electric current of outflow and SEGC that inflow current is arranged, judging has button to press this moment, ZLG7290 /INT pin output interrupt signal, key information is outputed to microprocessor by SDA, SCL, GND pin.
Light receiving element 32 can be selected multiple light-sensitive element for use, photodiode, phototriode, Darlington photosensitive tube, field effect photosensitive tube all can, follow-up also can further the amplification inserted key circuit again.
Figure 20 is that coal information device of the present invention inserts power supply with light emitting devices in the button 31, makes the electrical schematic diagram of its work.This is a simple principle, and the operating current size of the resistance size decision light emitting devices 31 of resistance R 1 is generally all in the milliampere level.
The model that light emitting devices 31 can be selected for use is a lot, best, can select light emitting devices 31 and light receiving element 32 assembling devices for use, optical wavelength matches like this, helps using.
Keyboard integrated circuit ZLG7290 shown in Figure 21 is not unique selecting for use, also has many keyboard integrated circuits to finish the work well, can realize the keyboard scan function with microprocessor yet.
Coal information device button of the present invention can be applied to the massaging device in the explosive gas atmosphere, also can be used on the electrical equipment of other every keyboards that need to use many buttons, for example on some monitoring devices.
More than three kinds of the specific embodiment of the present invention, the embodiment that the present invention exemplified not is the qualification to oneself, every content that does not break away from technical solution of the present invention,, all still belong in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (10)
1, a kind of coal information device button is characterized in that, comprising:
One light emitting devices (31) and a light receiving element (32), described light emitting devices (31) has emergent light bobbin (311), and light receiving element (32) has reception ray axis (314);
One lens section (20), described lens section (20) are positioned at the place ahead of light emitting devices (31), light receiving element (32);
One keycap assembly (10) is positioned at the place aheads of lens section (20), and described keycap assembly (10) comprises that fixed part (16), bending part (14), keycap main body (15) and photoconduction end portion (17); Described bending part (14) connecting key cap main body (15, the connection photoconduction is set under the described keycap main body (15) ends portion (17);
Described fixed part (16) is fixed, and keycap main body (15) is in the primary importance that is not stressed, and described photoconduction ends the resistance light body blocking-up emergent ray of portion (17);
The second place that described keycap main body (15) is being pressed, photoconduction ends portion (17) in company with keycap main body (15) displacement, described light emitting devices (31) end the transmittance section (172) of portion (17) along the emergent ray of emergent light bobbin (311) outgoing by photoconduction, inject light receiving element (32) along receiving ray axis (314).
2, coal information device button according to claim 1 is characterized in that:
The place ahead of described light receiving element (32) is provided with astigmatic shielded-plate tube (33) along receiving ray axis (314);
First light-reflecting portion (121) and second light-reflecting portion (122) are set under the described keycap main body (15), between first light-reflecting portion (121) and second light-reflecting portion (122), have reflective axle (318) and photoconduction to end portion (17).
3, coal information device button according to claim 1 is characterized in that:
Described bending part (14) itself has under elasticity or the keycap main body (15) Flexible element (18) is set; One end of described Flexible element (18) withstands on the keycap main body (15), and when not being stressed, Flexible element (18) eject key cap main body (15) makes keycap main body (15) be positioned at primary importance in keycap main body (15);
Described Flexible element (18) comprises spring, extension spring, shell fragment, elastic rubbery body, elastic mechanism.
4, a kind of coal information device button is characterized in that, comprising:
One light emitting devices (31) and a light receiving element (32), described light emitting devices (31) has emergent light bobbin (311), and light receiving element (32) has reception ray axis (314);
One lens section (20), described lens section (20) are positioned at the place ahead of light emitting devices (31), light receiving element (32);
One keycap assembly (10) is positioned at the place aheads of lens section (20), and described keycap assembly (10) comprises fixed part (16), bending part (14), keycap main body (15) and light guide part (19); Described bending part (14) connecting key cap main body (15); Described keycap main body (15) is arranged with light guide part (19);
Described fixed part (16) is fixed, and keycap main body (15) is in the primary importance that is not stressed, and the emergent ray of described smooth guide part (19) refraction passes into others' hands and receiving outside the ray axis (314);
The second place that described keycap main body (15) is being pressed, light guide part (19) is in company with keycap main body (15) displacement, the emergent ray along emergent light bobbin (311) outgoing of described light emitting devices (31) is reflected by light guide part (19), injects light receiving element (32) along receiving ray axis (314).
5, coal information device button according to claim 4 is characterized in that: the place ahead of described light receiving element (32) is provided with astigmatic shielded-plate tube (33) along receiving ray axis (314);
Second light-reflecting portion (122) is set under the described keycap main body (15); Second light-reflecting portion (122) is faced reflective axle (318),
Described smooth guide part (19) has mobile light-reflecting portion (192), and during in the second place that is pressed, the emergent ray of mobile light-reflecting portion (192) refraction overlaps with reflective (318) in keycap main body (15).
6, coal information device button according to claim 4 is characterized in that:
Described bending part (14) itself has under elasticity or the keycap main body (15) Flexible element (18) is set; One end of described Flexible element (18) withstands on the keycap main body (15), and when not being stressed, Flexible element (18) eject key cap main body (15) makes keycap main body (15) be positioned at primary importance in keycap main body (15);
Described Flexible element (18) comprises spring, extension spring, shell fragment, elastic rubbery body, elastic mechanism.
7, a kind of coal information device button is characterized in that described button comprises:
One light emitting devices (31) and a light receiving element (32), described light emitting devices (31) has emergent light bobbin (311), and light receiving element (32) has reception ray axis (314);
One lens section (20), described lens section (20) are positioned at the place ahead of light emitting devices (31), light receiving element (32);
One keycap assembly (10) is positioned at the place aheads of lens section (20), and described keycap assembly (10) comprises fixed part (16), bending part (14), keycap main body (15) and photo-emission part (11); Described bending part (14) connecting key cap main body (15); Described keycap main body (15) is arranged with photo-emission part (11);
Described fixed part (16) is fixed, keycap main body (15) is not when being stressed, the minute surface of described photo-emission part (11) has first distance L 1 apart from the mirror surface (21) of lens section (20), emergent ray along emergent light bobbin (311) directive photo-emission part (11) is reflected, and reflection ray passes into others' hands and receiving outside the ray axis (314);
After described keycap main body (15) is pressed, photo-emission part (11) displacement, the emergent ray along emergent light bobbin (311) outgoing of described light emitting devices (31) is reflected by photo-emission part (11), and reflection ray is injected light receiving element (32) along receiving ray axis (314).
8, coal information device button according to claim 7 is characterized in that:
Described emergent light bobbin (311) and reception ray axis (314); Become one first angle (38), described first angle (38) is greater than 30 °;
Described lens section (20) becomes one second angle (39) with light emitting devices (31), and described second angle (39) is less than 75 °;
There is cushion block body (13) on photo-emission part (11) next door, and after keycap main body (15) was pressed, the surface of cushion block body (13) contact optical lens section (20) made keycap main body (15) be in the second place
Described bending part (14) has elasticity; When not being stressed, eject key cap main body (15) makes keycap main body (15) be in primary importance to described bending part (14) in keycap main body (15).
9, coal information device button according to claim 7 is characterized in that:
Described keycap main body (15) connects Flexible element (18); Described Flexible element (18) is in keycap main body (15) when not being stressed, eject key cap main body (15), and the minute surface that makes photo-emission part (11) has first distance L 1 apart from the mirror surface (21) of lens section (20);
After keycap main body (15) was pressed, Flexible element (18) was depressed into terminal location, and the minute surface of photo-emission part this moment (111) is second distance L2 apart from the surface of lens section (20);
Described Flexible element (18) comprises spring, extension spring, shell fragment, elastic rubbery body, elastic mechanism.
10, according to claim 1,4,7 described coal information device buttons, it is characterized in that:
A described light emitting devices (31) and a light receiving element (32) are installed on supporting part (36),
Described light receiving element (32) is electrically connected in key circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100657997A CN101247120A (en) | 2008-03-07 | 2008-03-07 | Press keys for coal mine information device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100657997A CN101247120A (en) | 2008-03-07 | 2008-03-07 | Press keys for coal mine information device |
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| Publication Number | Publication Date |
|---|---|
| CN101247120A true CN101247120A (en) | 2008-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100657997A Pending CN101247120A (en) | 2008-03-07 | 2008-03-07 | Press keys for coal mine information device |
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| Country | Link |
|---|---|
| CN (1) | CN101247120A (en) |
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| CN102868390A (en) * | 2011-07-06 | 2013-01-09 | 比亚迪股份有限公司 | Mobile terminal and PTT (push-to-talk) key assembly |
| CN104362019A (en) * | 2014-10-13 | 2015-02-18 | 东莞市凯华电子有限公司 | Ultrathin photoelectric switch capable of being pressed down stably |
| CN104883174A (en) * | 2015-04-27 | 2015-09-02 | 青岛歌尔声学科技有限公司 | Key, terminal device and method for determining key stroke |
| CN105006396A (en) * | 2015-07-13 | 2015-10-28 | 东莞市美光达光学科技有限公司 | Switch module of ultrathin reflective computer input equipment |
| CN105245217A (en) * | 2015-11-17 | 2016-01-13 | 陈爱华 | Keyboard key using surface light source and keyboard |
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| CN102868390A (en) * | 2011-07-06 | 2013-01-09 | 比亚迪股份有限公司 | Mobile terminal and PTT (push-to-talk) key assembly |
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| KR20170003821U (en) * | 2014-10-13 | 2017-11-07 | 동관 카이후아 일렉트로닉스 코., 엘티디. | Ultra-thin photoelectric switch capable of being stably pressed |
| CN104362019A (en) * | 2014-10-13 | 2015-02-18 | 东莞市凯华电子有限公司 | Ultrathin photoelectric switch capable of being pressed down stably |
| KR200487307Y1 (en) * | 2014-10-13 | 2018-08-31 | 동관 카이후아 일렉트로닉스 코., 엘티디. | Ultra-thin photoelectric switch capable of being stably pressed |
| CN104883174A (en) * | 2015-04-27 | 2015-09-02 | 青岛歌尔声学科技有限公司 | Key, terminal device and method for determining key stroke |
| CN105006396A (en) * | 2015-07-13 | 2015-10-28 | 东莞市美光达光学科技有限公司 | Switch module of ultrathin reflective computer input equipment |
| CN105245217A (en) * | 2015-11-17 | 2016-01-13 | 陈爱华 | Keyboard key using surface light source and keyboard |
| CN105245217B (en) * | 2015-11-17 | 2018-11-30 | 陈爱华 | With the keyboard and keyboard of area source |
| KR20180026540A (en) * | 2016-02-12 | 2018-03-12 | 오므론 가부시키가이샤 | Control switch mechanism, trigger switch and power tool |
| KR101982455B1 (en) * | 2016-02-12 | 2019-05-27 | 오므론 가부시키가이샤 | Control switch mechanism, trigger switch and power tool |
| US10673433B2 (en) | 2016-02-12 | 2020-06-02 | Omron Corporation | Control switch mechanism, trigger switch, and electric tool |
| WO2017161891A1 (en) * | 2016-03-21 | 2017-09-28 | 郝小妮 | Separable dual-optical path button switch and mechanical keyboard |
| CN105577157A (en) * | 2016-03-21 | 2016-05-11 | 郝小妮 | Split type double-light-path key switch and mechanical keyboard |
| US10469081B2 (en) | 2016-03-21 | 2019-11-05 | Xiaoni HAO | Split type dual optical path key switch and a mechanical keyboard |
| CN106044425A (en) * | 2016-08-12 | 2016-10-26 | 康力电梯股份有限公司 | Non-contact photoinduction button |
| CN107329589A (en) * | 2017-06-29 | 2017-11-07 | 努比亚技术有限公司 | A kind of control device of function button |
| CN107329589B (en) * | 2017-06-29 | 2020-03-27 | 努比亚技术有限公司 | Control device of function key |
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