Summary of the invention
The main object of the present invention is to provide a kind of PKB photoelectric keyboard switch, it is intended to simplify PKB photoelectric keyboard switch
Structure, reduces cost, and improves its precision.
For achieving the above object, the PKB photoelectric keyboard switch that the present invention proposes, including pcb board, the shell of hollow
Body and pressing axis, move up and down in described pressing axis part is placed in described housing and in described housing,
Described housing removably connects described PCB, and described PCB is also electrically connected with photocell and light connects
Receiving element, described photocell and described light receiving element are located at the both sides of described pressing axis, institute relatively
Stating housing be provided with light-reflecting portion near the side of described photocell and be fixed with light-guiding pillar, described light is sent out
Penetrate the light part that element upwards penetrates and appeared described housing, another part light warp by described light-guiding pillar
Described light-reflecting portion reflects and light receiving element described in directive, and described pressing axis is formed with loophole, when described
When pressing axis is in pressed status, described light-reflecting portion reflection light through described loophole and by described light
Reception element receives, when described pressing axis is in non-pressed status, and the light quilt of described light-reflecting portion reflection
Described pressing axis stops.
Preferably, the propagation path of the light that this PKB photoelectric keyboard switch reflects in described light-reflecting portion also sets up
Collecting lens, described collecting lens is had to be connected to the lower end of described light-guiding pillar.
Preferably, described housing or described pressing axis alternative one have chute, and another in the two has
Slide rail, described slide rail snaps in described chute.
Preferably, described housing is formed with the first cavity volume and the second cavity volume being connected, described pressing axis portion
Partial volume is placed in described first cavity volume, and described light-guiding pillar is placed in described second cavity volume, described light-reflecting portion
It is formed at the cavity wall of described second cavity volume.
Preferably, described photocell and described light receiving element are both secured to the upper table of described pcb board
Face, and it is positioned at described first cavity volume and space that described second cavity volume is surrounded.
Preferably, the lower end of described pressing axis offers mounting groove, and this PKB photoelectric keyboard switch also includes striker
And it being sheathed on the first elastic component of described striker, the upper end of described striker and described first elastic component is all stretched into
In described mounting groove, the bottom of described first cavity volume is provided with framework, and the lower end of described striker is limited in institute
Stating in framework, the lower end of described first elastic component is connected to the upper end of described framework.
Preferably, the lower end of described striker offers stopper slot, and this PKB photoelectric keyboard switch also includes the second bullet
Property part, described second elastic component one end abut described stopper slot cell wall, the other end abut described first hold
The diapire in chamber, the lower sides of described striker is additionally provided with projection, and the sidewall of described framework offers slideway,
Described installation of slide track has guiding surface, described projection to be inserted in described slideway;The upper end of described striker sets
Being equipped with abutting part, described pressing axis is arranged at intervals with two push rods in described mounting groove, when described pressing axis
When being in non-pressed state, the end of described abutting part and the end abutment of described push rod, when described pressing
When axle is in pressed state, described projection slides along the guiding surface of described slideway and orders about described striker and turns
Dynamic, that the abutting part of described striker departs from the end of push rod described in two and inserts described in two between push rod room
And clash into the roof of described mounting groove.
Preferably, the end of push rod described in two is each formed with the first abutting inclined-plane, the end of described abutting part
Both sides are each formed with abutting the second abutting inclined-plane that inclined-plane matches with described first, at described pressing axis
When non-pressed state, described first abuts inclined-plane abuts inclined-plane laminating with described second.
Preferably, the sidewall of described housing is formed with buckle, and described pcb board offers installing port, described
Housing is arranged in described installing port body and is fastened on described pcb board by described buckle.
The present invention also proposes a kind of mechanical keyboard, switchs including multiple PKB photoelectric keyboards, and this PKB photoelectric keyboard switchs
Including pcb board, the housing of hollow and pressing axis, described pressing axis part is placed in described housing also
Moving up and down in described housing, removably connect described PCB, described PCB of described housing the most electrically connects
It is connected to photocell and light receiving element, described photocell and described light receiving element relatively set
In the both sides of described pressing axis, described housing be provided with near the side of described photocell light-reflecting portion and
Being fixed with light-guiding pillar, the light part that described photocell upwards penetrates is appeared institute by described light-guiding pillar
Stating housing, another part light is light receiving element, described pressing described in directive through the reflection of described light-reflecting portion
Axle is formed with loophole, and when described pressing axis is in pressed status, the light of described light-reflecting portion reflection is worn
Cross described loophole and received by described light receiving element, when described pressing axis is in non-pressed status,
The light of described light-reflecting portion reflection is stopped by described pressing axis.
Photocell, by arranging light-reflecting portion and light-guiding pillar in housing, is sent out by technical solution of the present invention
The light part gone out is conducted by light-guiding pillar and is transmitted housing, for the illumination of keyboard, another part
Light is reflected by the light-reflecting portion arranged on housing, when pressing axis is in pressed state, and light-reflecting portion
The light of reflection passes the loophole offered in pressing axis and is received by light receiving element, thus realizes photoelectricity
The signal input of keyboard switch.The present invention PKB photoelectric keyboard switch by a light source realize keyboard illumination and
Signal inputs, and simple in construction, cost is relatively low, and precision is higher, and service life is long.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention,
Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having
Make the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
It is to be appreciated that directional instruction in the embodiment of the present invention (such as upper and lower, left and right, front,
After ...) it is only used for explanation phase para-position under a certain particular pose (as shown in drawings) between each parts
Putting relation, motion conditions etc., if this particular pose changes, then directionality instruction is the most corresponding
Ground changes therewith.
It addition, the description relating to " first ", " second " etc. in the present invention is only used for describing purpose, and
It is not intended that indicate or imply its relative importance or the implicit number indicating indicated technical characteristic
Amount.Thus, define " first ", the feature of " second " can be expressed or implicitly include at least one
Individual this feature.It addition, the technical scheme between each embodiment can be combined with each other, but must be with
Based on those of ordinary skill in the art are capable of, when conflicting or nothing occurs in the combination of technical scheme
Will be understood that when method realizes that the combination of this technical scheme does not exists, the most not at the protection model of application claims
Within enclosing.
The present invention proposes a kind of PKB photoelectric keyboard switch.
Incorporated by reference to seeing figures.1.and.2, in an embodiment of the present invention, this PKB photoelectric keyboard switch includes PCB
Plate 90, the housing 10 of hollow and pressing axis 20, in pressing axis 20 part is placed in housing 10 and in shell
Moving up and down in body 10, removably connect PCB, PCB of housing 10 is also electrically connected with photocell
30 and light receiving element 40, photocell 30 and light receiving element 40 be relatively located at pressing axis 20
Both sides, housing 10 is provided with light-reflecting portion 13 near the side of photocell 30 and is fixed with light-guiding pillar
50, the light part that photocell 30 upwards penetrates is appeared housing 10 by light-guiding pillar 50, another portion
Light splitter reflects and directive light receiving element 40 through light-reflecting portion 13, and pressing axis 20 is formed with loophole 21,
When pressing axis 20 is in pressed status, the light of light-reflecting portion 13 reflection is connect through loophole 21 by light
Receiving element 40 to receive, when pressing axis 20 is in non-pressed status, the light of light-reflecting portion 13 reflection is pressed
Last item 20 stops.
Housing 10 can use the acryl of optical grade or plastic material to produce system by integrated injection molding mode
Become.Light-reflecting portion 13 can be a part for housing 10 self structure, and it can become in housing 10 double-shot moulding
After type completes, the shell wall in light-reflecting portion 13 region corresponding to housing 10 carries out surface process, forms glossiness
High surfaces is to reflex to light receiving element 40 by the some light that photocell 30 upwards penetrates.Certainly
Light-reflecting portion 13 can also be and the parts of housing 10 phase independence, and it can be the lucite being separately provided
Eyeglass or other reflective parts, and after housing 10 has been molded, light-reflecting portion 13 passes through adhesive means
It is attached on the sidewall of housing 10.Preferably integrated with housing 10 side of the light-reflecting portion 13 of the present embodiment
Formula, utilizes housing 10 material self character and carries out Surface Machining formation light-reflecting portion 13, producing into save
This.Light-reflecting portion 13 can be in arc shape, its some light upwards penetrated by photocell 30 anti-
There is when being incident upon light receiving element 40 certain spotlight effect.
Light-guiding pillar 50 can be transparent PC material, and housing 10 is appeared in the upper end of light-guiding pillar 50, with by light
The some light that radiated element 30 upwards sends transfers out housing 10.Pressing axis 20 can use nontransparent material
The plastics of matter are produced by injection molding manner and make, pressing axis 20 appear the part of housing 10 can connect have by
The keycap (not shown) of key, the light upwards conducting out by light-guiding pillar 50 can realize the illumination of button,
As illuminated the letter mark on keycap, the gap between adjacent key is illuminated, is convenient for people to use
While, too increase the aesthetic feeling of the keyboard with this PKB photoelectric keyboard switch.Pressing axis 20 is opened in the middle part of it
If running through the loophole 21 of its main body, the opening shape of loophole 21 can be for circular, square or other are many
Limit shape shape, the round of the light of the present embodiment light-reflecting portion 13 reflection is positioned at horizontal plane, loophole 21
Axis be also the straight line in horizontal plane, under pressing axis 20 is in non-pressed status, loophole 21
In the top in light-reflecting portion 13 luminous reflectance path, the light of light-reflecting portion 13 reflection is pressed axle 20 to be stopped, light
Receiving element 40 and fail to receive the light that photocell 30 sends, this switch no signal inputs.When
When pressing pressing axis 20, the axis of loophole 21 overlaps with the round of the light that light-reflecting portion 13 reflects,
Light receiving element 40 can receive the light that photocell 30 sends, and this switch realizes signal input.
The present embodiment photocell 30 can be LED (as monochromatic LED lamp, dual-colored LED lamp,
RGB three-color LED light).Light receiving element 40 can be that infrared receiving tube, i.e. light receiving element 40 pass through
Receive black light and realize switching signal input, now can be sticked at least in the LED of light reflection element
Two luminescence chips, one of them luminescence chip sends the visible ray illumination for keyboard, and another can be sent out
Go out black light (such as infrared ray) be irradiated to light receiving element 40 realize this switch signal input.Certainly,
The present embodiment light receiving element 40 can also use the structure of approximation photosensitive receiving tube, can receive light emission unit
The all band light that part 30 sends, it is achieved the signal input of switch.
Light, by arranging light-reflecting portion 13 and light-guiding pillar 50 in housing 10, is sent out by technical solution of the present invention
Penetrate the light part that element 30 sends to be conducted by light-guiding pillar 50 and transmit housing 10, for keyboard
Illumination, another part light is reflected, in pressing axis by the light-reflecting portion 13 arranged on housing 10
20 when being in pressed state, and the light of light-reflecting portion 13 reflection is through the loophole 21 offered in pressing axis 20
And received by light receiving element 40, thus realize the signal input of PKB photoelectric keyboard switch.The photoelectricity of the present invention
Keyboard switch realizes keyboard illumination by a light source and signal inputs, simple in construction, and cost is relatively low, and
And precision is higher, service life is long.
Incorporated by reference to reference to Fig. 2 to Fig. 4, in order to improve the sensitivity of this PKB photoelectric keyboard switch, this PKB photoelectric keyboard
Switch reflects in light-reflecting portion 13 and is additionally provided with collecting lens 51 on the propagation path of light, collecting lens 51
It is connected to the lower end of light-guiding pillar 50.
Collecting lens 51 can be with light-guiding pillar 50 integrated injection molding, and certain collecting lens 51 can also be independent
Arrange, and be connected with the lower end of light-guiding pillar 50 by gluing or hot melting way.Owing to light-reflecting portion 13 is passed through
The some light that photocell 30 sends is reflexed to light receiving element 40 by direct reflection mode, and minute surface is anti-
During penetrating, light has certain dispersibility, probably due to light ray energy makes the most by force cost switches uses process
In the insensitive problem of signal in input process occurs, collecting lens 51 is located at light-reflecting portion 13 by the present embodiment
On the propagation path of reflection light, converging the light of light-reflecting portion 13 reflection, raising reflexes to light and connects
Receive the energy of the light of element 40, thus improve the sensitivity in signal input process of this switch.
Incorporated by reference to reference Fig. 1, Fig. 2 and Fig. 5, housing 10 is formed with the first cavity volume 11 He being connected
Second cavity volume 12, pressing axis 20 part is placed in the first cavity volume 11, and light-guiding pillar 50 is placed in the second appearance
In chamber 12, light-reflecting portion 13 is formed at the cavity wall of the second cavity volume 12.
Light-reflecting portion 13 is formed at the cavity wall of the second cavity volume 12 and is positioned at the inside of housing 10, instead by the present embodiment
Light portion 13 is in the space of a relative closure, light-reflecting portion 13 switch use during be not easy because of
Foreign body enters and adheres to pollution, it can be ensured that switch continues normal work.
Photocell 30 and light receiving element 40 are both secured to pcb board 90, and are positioned at housing 10 He
In the space that PCB is surrounded.Specifically, the light out part of photocell 30 divides and is positioned at the second cavity volume 12
In, light receiving element 40 is positioned at the first cavity volume 11, by by photocell 30 and light receiving element
40 are located in airtight space, and photocell 30 and light receiving element 40 so can be avoided in switch work
Disturbed by extraneous foreign body during work, extended the normal service life of switch.
Refer to Fig. 2 to Fig. 6, the bottom of the first cavity volume 11 is provided with framework 14, pressing axis 20 times
End offers mounting groove 22, and this PKB photoelectric keyboard switch also includes striker 60 and is sheathed on the first of striker 60
Elastic component 70, the upper end of striker 60 and the first elastic component 70 is all stretched in mounting groove 22, striker 60
Lower end is limited in described framework 14, and the lower end of the first elastic component 70 abuts the upper end of framework 14.
First elastic component 70 can be spring.This PKB photoelectric keyboard switchs the first elastic component 70 and is constantly in compression
State, the upper end of the first elastic component 70 abuts the upper wall of mounting groove 22, and its lower end abuts the upper of framework 14
End.Framework 14 is surrounded by the baffle plate (sign) of two diapires being fixedly connected on the first cavity volume 11,
Baffle plate approximation " L " shape, two baffle plates are oppositely arranged, in order to realize the fixing of the first elastic component 70 lower end,
The present embodiment sinks to being formed with stepped hole 143 (ginseng Fig. 6), the first elastic component 70 in the upper end of framework 14
Lower end be now positioned at draw-in groove 17, then during 20 times pressures of pressing axis, the first elastic component 70 is difficult to partially
Shifting can keep vertical state, the pressure down of pressing axis 20 and upspring process ratio smoothly.Due to the first elastic component
70 are constantly in compressive state, incorporated by reference to reference to Fig. 1, Fig. 3 and Fig. 4, the present embodiment housing 10 also in
The cavity wall of the first cavity volume 11 offers through hole 151, and arranges overhead kick 24 at the sidewall of pressing axis 20,
The non-pressed status of pressing axis 20, overhead kick 24 abuts the hole wall of through hole 151, and pressing axis 20 can be avoided
The first cavity volume 11 is ejected under one elastic component 70 elastic force effect.
Incorporated by reference to referring to figs. 1 through Fig. 4 and Fig. 9 and Figure 10, the lower end of striker 60 offers stopper slot
62, this PKB photoelectric keyboard switch also includes that the second elastic component 80, one end of the second elastic component 80 stretch into stopper slot
62 and abut the roof of stopper slot 62, the other end abuts the diapire of the second cavity volume 12, the bottom of striker 60
Sidewall is additionally provided with projection 63, and the sidewall of framework 14 offers slideway 141, and slideway 141 is formed with guiding
Inclined-plane 142, projection 63 is inserted in slideway 141;The upper end of striker 60 is provided with abutting part 61, presses
Last item 20 is arranged at intervals with two push rods 23 (ginseng Fig. 7 and Fig. 8) in mounting groove 22, when pressing axis 20
When being in non-pressed state, the end of abutting part 61 and the end abutment of push rod 23, at pressing axis 20
When pressed state, projection 63 slides along the guiding surface 142 of slideway 141 and orders about striker 60 and rotates,
The abutting part 61 of striker 60 departs from two push rods 23 and inserts the room between two push rods 23 and clash into installation
The roof of groove 22.
The present embodiment is additionally provided with locating dowel 16 in framework 14, and the second elastic component 80 is stage clip, under it
End is sheathed on locating dowel 16.After depressing pressing axis 20 each time, the push rod 23 of pressing axis 20 promotes and hits
The abutting part 61 of pin 60 makes striker 60 move down, and the projection 63 of striker 60 is then along the guiding of slideway 141
Inclined-plane 142 slides, projection 63 thus order about striker 60 and rotate.In striker 60 rotation process, abut
Portion 61 and the dislocation of two push rods 23 depart from, and abutting part 61 is moment under the elastic force of the second elastic component 80 drives
The roof inserting the room between two push rods 23 and clash into mounting groove 22, thus send clear and melodious shock
Sound so that this PKB photoelectric keyboard switch in use has higher recreation experience.
Please further in conjunction with reference to Fig. 2, Fig. 9 and Figure 10, the end of two push rods 23 is each formed with the first abutting
Inclined-plane 231, the both sides, end of abutting part 61 are each formed with abutting second that inclined-plane 231 matches with first
Abutting inclined-plane 611, when pressing axis 20 is in non-pressed state, first abuts inclined-plane 231 supports with second
Connect inclined-plane 611 to fit.When pressing axis 20 is in pressed state, abut inclined-plane 231 and the by first
Two abut inclined-plane 611 produces slip relatively so that striker 60 dislocation rotates and resilience is reset to initial position
Process is more smooth and easy.
This PKB photoelectric keyboard switch is smooth and easy in pressing process holding action in order to ensure pressing axis 20, housing 10
Or described pressing axis 20 alternative one has chute (not shown), another in the two has slide rail (not
Diagram), slide rail snaps in described chute.Specifically, can be in the cavity wall of the first cavity volume 11 of housing 10
Form chute, form slide rail, chute and the bearing of trend of slide rail and pressing axis in the lateral wall of pressing axis 20
The direction of motion of 20 is identical.By chute and the cooperation of slide rail, quilt during 20 times pressures of pressing axis can be avoided
The cavity wall of housing 10 is blocked, and pressing operation is more smooth and easy.
Incorporated by reference to reference to Fig. 3 to Fig. 5, the sidewall of housing 10 is formed with buckle 15, and pcb board 90 is offered
There are installing port 91, housing 10 to be arranged in installing port 91 body and are fastened on described pcb board by buckle 15
90.The present embodiment is formed with the breach 92 matched with photocell 30 in the side of installing port 91,
And pcb board 90 is extended with overlap joint platform 93 in installing port 91, overlap joint platform 93 both sides form limited mouth
94, light receiving element 40 is attached at the upper surface of overlap joint platform 93.Housing 10 is in the first cavity volume 11 times
Portion's shell wall is formed with draw-in groove 17, and during housing 10 is installed on pcb board 90, overlap joint platform 93 blocks
Entering in draw-in groove 17, the two side of draw-in groove 17 is limited in limited mouth 94, by above fit structure, makes
Obtain housing 10 more firm with the attachment structure of pcb board 90, and dismount more convenient.
The present invention also proposes a kind of mechanical keyboard, and this mechanical keyboard includes that multiple PKB photoelectric keyboard switchs, this light
The concrete structure of key shelf switch is with reference to above-described embodiment, owing to mechanical keyboard have employed above-mentioned all enforcement
Whole technical schemes of example, the most at least have that the technical scheme of above-described embodiment brought is all useful
Effect, this is no longer going to repeat them.
The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention,
Every under the inventive concept of the present invention, utilize the equivalent structure that description of the invention and accompanying drawing content are made
Conversion, or directly/be indirectly used in other relevant technical fields and be included in the patent protection model of the present invention
In enclosing.