CN205845793U - PKB photoelectric keyboard switch and mechanical keyboard - Google Patents

Abstract

nullThe open a kind of PKB photoelectric keyboard switch of this utility model and mechanical keyboard，This PKB photoelectric keyboard switch includes pcb board、Housing、And pressing axis，Described pressing axis moves up and down in described housing，Described PCB is also electrically connected with photocell and light receiving element，Described photocell and described light receiving element are located at the both sides of described pressing axis relatively，Described housing is provided with light-reflecting portion and is fixed with light-guiding pillar，The light part that described photocell upwards penetrates is appeared described housing by described light-guiding pillar，Another part light is light receiving element described in directive through the reflection of described light-reflecting portion，Described pressing axis is formed with loophole，When described pressing axis is in pressed status，The light of described light-reflecting portion reflection is received through described loophole 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.PKB photoelectric keyboard construction of switch of the present utility model is simple, and precision is higher, cost is relatively low.

Description

PKB photoelectric keyboard switch and mechanical keyboard

Technical field

This utility model relates to computer fittings technical field, switchs particularly to a kind of PKB photoelectric keyboard and applies this light telegraph key The mechanical keyboard of dish switch.

Background technology

Photoswitch is to utilize object block light beam or reflect, change photoelectric sensor by light state, thus connect The device of on-off open circuit.There is due to photoswitch the advantages such as fast response time, deeply liked by Market Consumer.

But existing photoswitch is typically to arrange multiple light-emitting device, a portion light-emitting device is used for photoswitch Illumination, another part for photoswitch signal input so that the overall structure of photoswitch is more complicated, relatively costly.

Utility model content

Main purpose of the present utility model is to provide a kind of PKB photoelectric keyboard switch, it is intended to simplify the knot of PKB photoelectric keyboard switch Structure, reduces cost, and improves its precision.

For achieving the above object, the PKB photoelectric keyboard that the utility model proposes switch, including pcb board, the housing of hollow and by Last item, moves up and down in described pressing axis part is placed in described housing and in described housing, and described housing removably connects Described PCB, described PCB are also electrically connected with photocell and light receiving element, described photocell and described light and connect Receive element and be relatively located at 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 described housing by described light-guiding pillar, another Some light is light receiving element described in directive through the reflection of described light-reflecting portion, and described pressing axis is formed with loophole, presses when described When last item is in pressed status, the light of described light-reflecting portion reflection is received through described loophole 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.

Preferably, the propagation path of the light that this PKB photoelectric keyboard switch reflects in described light-reflecting portion is additionally provided with optically focused saturating Mirror, described collecting lens is 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, and described pressing axis part is placed in In described first cavity volume, described light-guiding pillar is placed in described second cavity volume, and described light-reflecting portion is formed at described second cavity volume Cavity wall.

Preferably, described photocell and described light receiving element are both secured to the upper surface of described pcb board, and are positioned at In the space that described first cavity volume and described second cavity volume are surrounded.

Preferably, the lower end of described pressing axis offers mounting groove, and this PKB photoelectric keyboard switch also includes striker and is sheathed on First elastic component of described striker, the upper end of described striker and described first elastic component is all stretched in described mounting groove, and described The bottom of one cavity volume is provided with framework, and the lower end of described striker is limited in described framework, and the lower end of described first elastic component is supported It 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 elastic component, described Second elastic component one end abuts the cell wall of described stopper slot, and the other end abuts the diapire of described first cavity volume, under described striker Portion's sidewall is additionally provided with projection, and the sidewall of described framework offers slideway, and described installation of slide track has guiding surface, and described projection is inserted It is located in described slideway；The upper end of described striker is provided with abutting part, and described pressing axis is arranged at intervals with in described mounting groove Two push rods, when described pressing axis is in non-pressed state, the end of described abutting part and the end abutment of described push rod, work as institute Stating pressing axis when being in pressed state, described projection slides along the guiding surface of described slideway and orders about described striker and rotates, institute State the abutting part of striker and depart from the end of push rod described in two and the room of inserting described in two between push rod clash into described mounting groove Roof.

Preferably, the end of push rod described in two is each formed with the first abutting inclined-plane, the equal shape in both sides, end of described abutting part Described in Cheng Youyu, first abuts the second abutting inclined-plane that inclined-plane matches, when described pressing axis is in 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, and described housing is arranged in Described installing port body are fastened on described pcb board by described buckle.

This utility model also proposes a kind of mechanical keyboard, switchs including multiple PKB photoelectric keyboards, and this PKB photoelectric keyboard switch includes Pcb board, the housing of hollow and pressing axis, in described pressing axis part is placed in described housing and transport in described housing up and down Dynamic, removably connect described PCB, described PCB of described housing is also electrically connected with photocell and light receiving element, institute Stating photocell and described light receiving element is located at the both sides of described pressing axis relatively, described housing is near described light emission unit The side of part is provided with light-reflecting portion and is fixed with light-guiding pillar, and the light part that described photocell upwards penetrates is led by described Light beam appears described housing, and another part light is light receiving element, described pressing axis described in directive through the reflection of described light-reflecting portion Being formed with loophole, when described pressing axis is in pressed status, the light of described light-reflecting portion reflection is through described loophole Being received by described light receiving element, when described pressing axis is in non-pressed status, the light of described light-reflecting portion reflection is described Pressing axis stops.

Photocell, by arranging light-reflecting portion and light-guiding pillar in housing, is sent by technical solutions of the utility model A light part is conducted by light-guiding pillar and is transmitted housing, and for the illumination of keyboard, another part light sets by housing The light-reflecting portion put reflects, and when pressing axis is in pressed state, the light of light-reflecting portion reflection is through offering in pressing axis Loophole and received by light receiving element, thus realize PKB photoelectric keyboard switch signal input.PKB photoelectric keyboard of the present utility model Switching and realize keyboard illumination and signal input, simple in construction by a light source, cost is relatively low, and precision is higher, uses the longevity Life is long.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, the accompanying drawing in describing below is only It is embodiments more of the present utility model, for those of ordinary skill in the art, in the premise not paying creative work Under, it is also possible to other accompanying drawing is obtained according to the structure shown in these accompanying drawings.

Fig. 1 is the structural representation that this utility model PKB photoelectric keyboard switchs an embodiment；

Fig. 2 is the sectional structure schematic diagram in Fig. 1 at A-A；

Fig. 3 is the detonation configuration schematic diagram of PKB photoelectric keyboard switch in Fig. 1；

Fig. 4 is the detonation configuration schematic diagram at another visual angle of PKB photoelectric keyboard switch in Fig. 1；

Fig. 5 is the structural representation of the housing of this utility model PKB photoelectric keyboard switch；

Fig. 6 is the structural representation at another visual angle of the housing of this utility model PKB photoelectric keyboard switch；

Fig. 7 is the structural representation of the pressing axis of this utility model PKB photoelectric keyboard switch；

Fig. 8 is the structural representation at another visual angle of the pressing axis of this utility model PKB photoelectric keyboard switch；

Fig. 9 is the structural representation of the striker of this utility model PKB photoelectric keyboard switch；

Figure 10 is the structural representation at another visual angle of the striker of this utility model PKB photoelectric keyboard switch.

Drawing reference numeral illustrates:

Label	Title	Label	Title
				10	Housing	24	Overhead kick
11	First cavity volume	30	Photocell
				12	Second cavity volume	40	Light receiving element
13	Light-reflecting portion	50	Light-guiding pillar
				14	Framework	51	Collecting lens
141	Slideway	60	Striker
				142	Guiding surface	61	Abutting part
143	Stepped hole	611	Second abuts inclined-plane
				15	Buckle	62	Stopper slot
151	Through hole	63	Projection
				16	Locating dowel	70	First elastic component
17	Draw-in groove	80	Second elastic component
				20	Pressing axis	90	Pcb board
21	Loophole	91	Installing port
				22	Mounting groove	92	Breach
23	Push rod	93	Overlap joint platform
				231	First abuts inclined-plane	94	Limited mouth

The realization of this utility model purpose, functional characteristics and advantage will in conjunction with the embodiments, are described further referring to the drawings.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present utility model rather than all Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not making creative work premise Lower obtained every other embodiment, broadly falls into the scope of this utility model protection.

It is to be appreciated that directional instruction (such as up, down, left, right, before and after ...) in this utility model embodiment It is only used for explanation relative position relation under a certain particular pose (as shown in drawings) between each parts, motion conditions etc., as When really this particular pose changes, then directionality instruction changes the most therewith.

It addition, the description relating to " first ", " second " etc. in this utility model is only used for describing purpose, and it is not understood that For indicating or imply its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", The feature of " second " can express or implicitly include at least one this feature.It addition, the technical side between each embodiment Case can be combined with each other, but must be based on those of ordinary skill in the art are capable of, when the combination of technical scheme Occur conflicting will be understood that the combination of this technical scheme does not exists, the most not in this utility model requirement when maybe cannot realize Protection domain within.

The utility model proposes a kind of PKB photoelectric keyboard switch.

Incorporated by reference to seeing figures.1.and.2, in this utility model one embodiment, this PKB photoelectric keyboard switch include pcb board 90, The housing 10 of hollow and pressing axis 20, move up and down in pressing axis 20 part is placed in housing 10 and in housing 10, housing 10 Removably connect PCB, and PCB is also electrically connected with photocell 30 and light receiving element 40, and photocell 30 and light connect Receiving element 40 and be relatively located at the both sides of pressing axis 20, housing 10 is provided with light-reflecting portion 13 and consolidates near the side of photocell 30 Surely having light-guiding pillar 50, the light part that photocell 30 upwards penetrates is appeared housing 10, another part light by light-guiding pillar 50 Line reflects and directive light receiving element 40 through light-reflecting portion 13, and pressing axis 20 is formed with loophole 21, presses when pressing axis 20 is in down During state, light-reflecting portion 13 reflection light through loophole 21 and received by light receiving element 40, when pressing axis 20 be in non-under During pressure condition, the light of light-reflecting portion 13 reflection is pressed axle 20 to be stopped.

Housing 10 can use the acryl of optical grade or plastic material to be produced by integrated injection molding mode and make.Light-reflecting portion 13 can be a part for housing 10 self structure, and it can be corresponding anti-to housing 10 after housing 10 double-shot moulding completes The shell wall in region, light portion 13 carries out surface process, forms glossiness high surfaces with the part upwards penetrated by photocell 30 Light reflexes to light receiving element 40.Certainly light-reflecting portion 13 can also be and the parts of housing 10 phase independence that it can be independent The lucite eyeglass arranged 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 mode of the light-reflecting portion 13 of the present embodiment, utilizes housing 10 Material self character also carries out Surface Machining formation light-reflecting portion 13, to save production cost.Light-reflecting portion 13 can be in arc shape, its The some light that photocell 30 is upwards penetrated there is when reflexing to 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 photocell 30 to On the some light that sends transfer out housing 10.Pressing axis 20 can use the plastics of nontransparent material to produce system by injection molding manner Becoming, pressing axis 20 appears the part of housing 10 and can connect and have the keycap of button (not shown), is upwards transferred out by light-guiding pillar 50 The light come can realize the illumination of button, as illuminated the letter mark on keycap, is illuminated in the gap between adjacent key, While being convenient for people to use, 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 circular, square or other polygonal shapes, this reality The round of the light executing example light-reflecting portion 13 reflection is positioned at horizontal plane, and the axis of loophole 21 is also the straight line in horizontal plane, Under pressing axis 20 is in non-pressed status, loophole 21 is positioned at the top in light-reflecting portion 13 luminous reflectance path, and light-reflecting portion 13 reflects Light be pressed axle 20 and stop, light receiving element 40 fails to receive the light that photocell 30 sends, and this switch is without letter Number input.When pressing pressing axis 20, the axis of loophole 21 overlaps with the round of the light that light-reflecting portion 13 reflects, and light connects Receiving element 40 and can receive the light that photocell 30 sends, this switch realizes signal input.

The present embodiment photocell 30 can be LED (such 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 realize switching signal input by receiving black light, now Can be sticked in the LED of light reflection element at least two luminescence chip, and one of them luminescence chip sends visible ray for key The illumination of dish, another can send black light (such as infrared ray) and be irradiated to light receiving element 40 to realize the signal of this switch defeated Enter.Certainly, the present embodiment light receiving element 40 can also use the structure of approximation photosensitive receiving tube, can receive photocell 30 The all band light sent, it is achieved the signal input of switch.

Technical solutions of the utility model are by arranging light-reflecting portion 13 and light-guiding pillar 50, by photocell in housing 10 The light part that 30 send is conducted by light-guiding pillar 50 and is transmitted housing 10, for the illumination of keyboard, another part light Reflected by the light-reflecting portion 13 arranged on housing 10, when pressing axis 20 is in pressed state, the light of light-reflecting portion 13 reflection Line passes the loophole 21 offered in pressing axis 20 and is received by light receiving element 40, thus realizes the signal of PKB photoelectric keyboard switch Input.PKB photoelectric keyboard of the present utility model switch realizes keyboard illumination by a light source and signal inputs, simple in construction, cost Relatively low, and precision is higher, and 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 switchs instead Light portion 13 reflects and is additionally provided with collecting lens 51 on the propagation path of light, and collecting lens 51 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 separately provided, and lead to Cross gluing or hot melting way to be connected with the lower end of light-guiding pillar 50.Due to light-reflecting portion 13 by direct reflection mode by photocell 30 some light sent reflex to light receiving element 40, and during direct reflection, light has certain dispersibility, probably due to Light ray energy is made the most by force during cost switches uses there is the insensitive problem of signal in input process, and the present embodiment is by optically focused Lens 51 are located at light-reflecting portion 13 and are reflected on the propagation path of light, converge the light of light-reflecting portion 13 reflection, improve reflection To the energy of the light of light receiving element 40, thus improve the sensitivity in signal input process of this switch.

Incorporated by reference to reference to Fig. 1, Fig. 2 and Fig. 5, housing 10 is formed with the first cavity volume 11 and the second cavity volume 12 being connected, Pressing axis 20 part is placed in the first cavity volume 11, and light-guiding pillar 50 is placed in the second cavity volume 12, and light-reflecting portion 13 is formed at second The cavity wall of 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 by the present embodiment, and light-reflecting portion 13 is in In the space of one relative closure, light-reflecting portion 13 is not easy to adhere to pollution because foreign body enters during switch uses, can be true Protect switch and continue normal work.

Photocell 30 and light receiving element 40 are both secured to pcb board 90, and are positioned at the sky that housing 10 and PCB is surrounded In.Specifically, the light out part of photocell 30 divides and is positioned at the second cavity volume 12, and light receiving element 40 is positioned at the first cavity volume In 11, by photocell 30 and light receiving element 40 being located in airtight space, so can avoid photocell 30 Disturbed by extraneous foreign body during switch with light receiving element 40, 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, and the lower end of pressing axis 20 offers installation Groove 22, this PKB photoelectric keyboard switch also includes striker 60 and is sheathed on the first elastic component 70 of striker 60, and striker 60 and first is elastic The upper end of part 70 is all stretched in mounting groove 22, and the lower end of striker 60 is limited in described framework 14, the lower end of the first elastic component 70 Abut 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 compressive state, and first The upper end of elastic component 70 abuts the upper wall of mounting groove 22, and its lower end abuts the upper end of framework 14.Framework 14 is by two fixing connections Baffle plate (sign) in the diapire of the first cavity volume 11 surrounds, baffle plate approximation " L " shape, and two baffle plates are oppositely arranged, in order to realize the Fixing of one elastic component 70 lower end, the present embodiment sinks to being formed with stepped hole 143 (ginseng Fig. 6), the first bullet in the upper end of framework 14 Property part 70 lower end be now positioned at draw-in groove 17, then during pressing axis 20 times pressure, the first elastic component 70 is difficult to skew and can keep Vertically state, the pressure down of pressing axis 20 and upspring process ratio smoothly.Owing to the first elastic component 70 is constantly in compressive state, Incorporated by reference to reference to Fig. 1, Fig. 3 and Fig. 4, the present embodiment housing 10 also offers through hole 151 in the cavity wall of the first cavity volume 11, and is pressing The sidewall of last item 20 arranges overhead kick 24, and in the non-pressed status of pressing axis 20, overhead kick 24 abuts the hole wall of through hole 151, can avoid by Last item 20 ejects the first cavity volume 11 under the first 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, separately One end abuts the diapire of the second cavity volume 12, and the lower sides of striker 60 is additionally provided with projection 63, and the sidewall of framework 14 offers cunning Road 141, slideway 141 is formed with guiding surface 142, and projection 63 is inserted in slideway 141；The upper end of striker 60 is provided with abutting part 61, pressing axis 20 is arranged at intervals with two push rods 23 (ginseng Fig. 7 and Fig. 8) in mounting groove 22, when pressing axis 20 is in non-pushed shape During state, the end of abutting part 61 and the end abutment of push rod 23, when pressing axis 20 is in pressed state, projection 63 is along slideway The guiding surface 142 of 141 slides and orders about striker 60 and rotates, and the abutting part 61 of striker 60 departs from two push rods 23 and inserts two push rods The roof of mounting groove 22 is also clashed in room between 23.

The present embodiment is additionally provided with locating dowel 16 in framework 14, and the second elastic component 80 is stage clip, and its lower end is sheathed on fixed Position post 16.After depressing pressing axis 20 each time, the push rod 23 of pressing axis 20 promotes the abutting part 61 of striker 60 to make striker 60 Moving down, the projection 63 of striker 60 then slides along the guiding surface 142 of slideway 141, projection 63 thus order about striker 60 and rotate.Hitting In pin 60 rotation process, abutting part 61 and the dislocation of two push rods 23 depart from, and abutting part 61 is under the elastic force of the second elastic component 80 drives The roof that moment inserts the room between two push rods 23 and clashes into mounting groove 22, thus send clear and melodious strike note 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, supports The both sides, end meeting portion 61 are each formed with abutting the second abutting inclined-plane 611 that inclined-plane 231 matches with first, at pressing axis 20 When non-pressed state, the first abutting inclined-plane 231 abuts inclined-plane 611 with second and fits.When pressing axis 20 is in pressed state, Abut inclined-plane 231 by first and produce relative slip with the second abutting inclined-plane 611 so that striker 60 dislocation rotates and resilience reset More smooth and easy to initial position process.

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 Axle 20 alternative one has chute (not shown), and another in the two has slide rail (not shown), and slide rail snaps in described chute. Specifically, chute can be formed in the cavity wall of the first cavity volume 11 of housing 10, form slide rail in the lateral wall of pressing axis 20, sliding Groove is identical with the direction of motion of pressing axis 20 with the bearing of trend of slide rail.By chute and the cooperation of slide rail, pressing axis can be avoided Being blocked by the cavity wall of housing 10 during 20 times pressures, 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 offers installing port 91, shell Body 10 is arranged in installing port 91 body and is fastened on described pcb board 90 by buckle 15.The present embodiment is in the side shape of installing port 91 The breach 92 that Cheng Youyu photocell 30 matches, and pcb board 90 be extended with in installing port 91 overlap joint platform 93, overlap platform 93 both sides form limited mouth 94, and 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 snaps in draw-in groove 17, draw-in groove 17 Two side be limited in limited mouth 94, by above fit structure so that housing 10 is more steady with the attachment structure of pcb board 90 Gu, and dismount more convenient.

This utility model also proposes a kind of mechanical keyboard, and this mechanical keyboard includes that multiple PKB photoelectric keyboard switchs, this light telegraph key The concrete structure of dish switch is with reference to above-described embodiment, owing to mechanical keyboard have employed whole technical sides of above-mentioned all embodiments Case, the most at least has all beneficial effects that the technical scheme of above-described embodiment is brought, and this is no longer going to repeat them.

The foregoing is only preferred embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, Every under utility model of the present utility model is conceived, utilize the equivalent structure that this utility model description and accompanying drawing content are made Conversion, or directly/be indirectly used in other relevant technical fields and be included in scope of patent protection of the present utility model.

Claims (10)

1. a PKB photoelectric keyboard switch, including pcb board, the housing of hollow and pressing axis, described pressing axis part is placed in described Moving up and down in housing and in described housing, described housing removably connects described PCB, it is characterised in that described PCB is the most electric Property connect have photocell and light receiving element, described photocell and described light receiving element be relatively located at described by The both sides of last item, described housing is provided with light-reflecting portion and is fixed with light-guiding pillar near the side of described photocell, described light The light part that radiated element upwards penetrates is appeared described housing by described light-guiding pillar, and another part light is through described light-reflecting portion Reflecting and light receiving element described in directive, described pressing axis is formed with loophole, when described pressing axis is in pressed status, and institute State light-reflecting portion reflection light through described loophole and received by described light receiving element, when described pressing axis be in non-under press During state, the light of described light-reflecting portion reflection is stopped by described pressing axis.

2. PKB photoelectric keyboard switch as claimed in claim 1, it is characterised in that this PKB photoelectric keyboard switch reflects in described light-reflecting portion Light propagation path on be additionally provided with collecting lens, described collecting lens is connected to the lower end of described light-guiding pillar.

3. PKB photoelectric keyboard switch as claimed in claim 1, it is characterised in that described housing or described pressing axis alternative one tool Having chute, another in the two has slide rail, and described slide rail snaps in described chute.

4. PKB photoelectric keyboard switch as claimed in claim 1, it is characterised in that described housing is formed with the first cavity volume being connected With the second cavity volume, described pressing axis part is placed in described first cavity volume, and described light-guiding pillar is placed in described second cavity volume, Described light-reflecting portion is formed at the cavity wall of described second cavity volume.

5. PKB photoelectric keyboard switch as claimed in claim 4, it is characterised in that described photocell and described light receiving element It is both secured to the upper surface of described pcb board, and is positioned at described first cavity volume and space that described second cavity volume is surrounded.

6. PKB photoelectric keyboard switch as claimed in claim 4, it is characterised in that the lower end of described pressing axis offers mounting groove, This PKB photoelectric keyboard switch also includes striker and is sheathed on the first elastic component of described striker, described striker and described first elastic component Upper end all stretch 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.

7. PKB photoelectric keyboard switch as claimed in claim 6, it is characterised in that the lower end of described striker offers stopper slot, should PKB photoelectric keyboard switch also includes that the second elastic component, described second elastic component one end abut the cell wall of described stopper slot, and the other end supports Connecing the diapire of described first cavity volume, 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 is provided with abutting part, institute State pressing axis in described mounting groove, be arranged at intervals with two push rods, when described pressing axis is in non-pressed state, described abutting The end in portion and the end abutment of described push rod, when described pressing axis is in pressed state, described projection is along described slideway Guiding surface slides and orders about described striker and rotates, and the abutting part of described striker departs from the end of push rod described in two and inserts two institutes State the room between push rod and clash into the roof of described mounting groove.

8. PKB photoelectric keyboard switch as claimed in claim 7, it is characterised in that the end of push rod described in two is each formed with first and supports Connecing inclined-plane, the both sides, end of described abutting part are each formed with abutting the second abutting inclined-plane that inclined-plane matches with described first, when When described pressing axis is in non-pressed state, described first abuts inclined-plane abuts inclined-plane laminating with described second.

9. PKB photoelectric keyboard switch as claimed in claim 1, it is characterised in that the sidewall of described housing is formed with buckle, described Pcb board offers installing port, and described housing is arranged in described installing port and is fastened on described pcb board by described buckle.

10. a mechanical keyboard, it is characterised in that include that multiple PKB photoelectric keyboard as described in claim 1 to 9 any one is opened Close.