CN213366432U

CN213366432U - Optical axis key switch

Info

Publication number: CN213366432U
Application number: CN202021498312.7U
Authority: CN
Inventors: 吴福喜; 胡前程
Original assignee: Dongguan Kaihua Electronics Co Ltd
Current assignee: Dongguan Kaihua Electronics Co Ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2021-06-04
Anticipated expiration: 2030-07-24

Abstract

The utility model discloses an optical axis key switch, including a base, and set up an upper cover on the base, this upper cover lid fits and forms a holding chamber on the base, is provided with one in this holding intracavity and leads the core, should lead core upper end and cover the upper end from and wear out, still including setting up on the base and be located a rotor on leading the core side, and the electricity connect in a pair of optical assembly of PCB board, be provided with on this rotor and block the worn-out fur to an optical assembly corresponding. The utility model provides an optical axis key switch, structural design is novel, reasonable, when realizing switching on and the disconnection function, need not to add in addition and feel emergence structure, can improve and press down and feel, improves user experience.

Description

Optical axis key switch

Technical Field

The utility model relates to a key switch especially relates to an optical axis key switch.

Background

The light conduction key switch is a device which changes the light receiving state by using whether an object shields light or not to switch on or off a circuit, and is used for realizing the conduction and disconnection functions of the key switch. With the continuous improvement of the technology, the photoconductive push-button switch is widely applied.

At present, the common light-conducting key switches in the market are formed by directly molding a light-blocking piece on a pressing guide core, and the structural design is single; moreover, without additionally providing a hand feeling generating structure, the pressing hand feeling is not good, and the requirement of the user on the pressing hand feeling cannot be met.

SUMMERY OF THE UTILITY MODEL

Not enough to the aforesaid, the utility model aims to provide an optical axis key switch, structural design is novel, reasonable, when realizing switching on and the disconnection function, need not to add in addition and feel emergence structure, can improve and press down and feel, improve user experience.

The utility model discloses a reach the technical scheme that above-mentioned purpose adopted and be:

the utility model provides an optical axis key switch, includes a base, and sets up an upper cover on the base, and this upper cover lid fits and forms a holding chamber on the base, is provided with one in this holding intracavity and leads the core, should lead the core upper end and wear out from the upper cover upper end, its characterized in that still includes and sets up a rotor on the base and be located and lead the core side and connect in a pair of optical assembly of PCB board, is provided with on this rotor and blocks the tabula rase corresponding with the optical assembly.

As a further improvement of the present invention, the moving plate is mainly composed of a connecting portion disposed on the base and an elastic plate body connected to the connecting portion, wherein the light blocking plate is disposed on the elastic plate body.

As a further improvement of the utility model, the light blocking plate is encapsulated on the lower part of the elastic sheet body.

As a further improvement of the utility model, the lower part of the elastic sheet body is bent to form the light blocking plate.

As a further improvement, the guide core is provided with at least one pushing projection, and the elastic sheet body is provided with at least one protrusion corresponding to the pushing projection.

As a further improvement of the present invention, a guide slope is formed on the push projection.

As a further improvement of the present invention, the light assembly includes a light emitting element and a light receiving element electrically connected to the PCB respectively, wherein a light path is formed between the light emitting element and the light receiving element, the light blocking plate is switched between the shielding light path and the keeping away from the light path.

As a further improvement of the present invention, the lower end surface of the base is upwardly and concavely provided with two grooves for embedding the light emitting element and the light receiving element respectively, and a light channel is formed between the two grooves; the light blocking plate is arranged in the accommodating cavity and is switched between the light channel and the far light channel.

As a further improvement of the utility model, the light blocking plate extends to the lower part of the base.

As a further improvement, the utility model is provided with a torsion spring on the base the protruding lug of pressing that is used for pressing the torsion spring that is equipped with on leading the core side.

The utility model has the advantages that: through the moving plate of band elimination worn-out fur, with lead core matched with structural design, by reciprocating of leading the core, promote the moving plate and take place the elasticity and change to drive and hinder the worn-out fur and shelter from the light path of focusing on the subassembly and do not shelter from switching over between the light path two kinds of states of focusing on the subassembly, realize key switch's switching on and off function from this, structural design is novel, reasonable. Simultaneously, because the moving plate is the elastic component, utilize the elastic deformation of moving plate to drive and hinder the removal of worn-out fur on the subassembly of focusing on, when pressing down the guide core from this, need not to add in addition and feel emergence structure, can improve and press and feel, improve user experience.

The above is an overview of the technical solution of the present invention, and the present invention is further explained with reference to the accompanying drawings and the detailed description.

Drawings

FIG. 1 is an exploded view of the present invention;

fig. 2 is a schematic external structural view of the present invention;

FIG. 3 is a schematic structural view of a part of the present invention;

FIG. 4 is a schematic structural view of the middle rotor of the present invention;

FIG. 5 is another schematic structural diagram of the middle rotor of the present invention;

fig. 6 is a schematic structural view of the middle guide core of the present invention;

FIG. 7 is a schematic view of the bottom structure of the base of the present invention;

FIG. 8 is a schematic view of the structure of the present invention in which the focusing assembly is combined with the base;

fig. 9 is an overall sectional view of the center core according to the present invention in an unpressed state;

fig. 10 is an overall sectional view of the middle guide core according to the present invention in a pressed state;

fig. 11 is a schematic structural view of the middle torsion spring of the present invention disposed on the base.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings and preferred embodiments.

Referring to fig. 1 to 3, an embodiment of the present invention discloses an optical axis key switch, including a base 1 and an upper cover 2 disposed on the base 1, the upper cover 2 covers the base 1 to form a containing cavity 10, as shown in fig. 9, a guide core 3 is disposed in the containing cavity 10, and the upper end of the guide core 3 penetrates out from the upper end of the upper cover 2 for pressing. The optical axis key switch of the embodiment further comprises a moving plate 4 arranged on the base 1 and located on the side edge of the guide core 3 and a pair of optical components 5 electrically connected to the PCB 6, wherein the moving plate 4 is provided with a light blocking plate 40 corresponding to the optical components 5, the moving plate 4 is pushed by the up-and-down movement of the guide core 3, the moving plate 4 is elastically changed, and therefore the light blocking plate 40 is driven to be close to the optical components 5 and far away from the optical components 5 to be switched, and the on-off function of the key switch is realized.

In this embodiment, as shown in fig. 4, the moving plate 4 mainly comprises a connecting portion 41 disposed on the base 1 and an elastic sheet 42 connected to the connecting portion 41, wherein the light blocking plate 40 is disposed on the elastic sheet 42. Specifically, elastic sheet body 42 is formed by connecting portion 41 upper end bending downward, and connecting portion 41 is located the base, when elastic sheet body 42 receives the thrust of leading core 3, can take place elastic deformation. From this, because the rotor 4 is the elastic component, utilizes the elastic deformation of rotor 4 to drive and hinders the removal of worn-out fur 40 on focusing on subassembly 5, from this when pressing and leading core 3, need not to add in addition and feel emergence structure, can improve and press and feel, improve user experience.

Specifically, the light blocking plate 40 is formed in the following two ways:

(1) the light blocking plate 40 is encapsulated at the lower part of the elastic sheet body 42, as shown in fig. 4.

(2) The lower portion of the elastic sheet 42 is bent to form the light blocking plate 40, and specifically, the elastic sheet 42 and the light blocking plate 40 are integrally formed, as shown in fig. 5.

In order to apply a pushing force to the elastic sheet body 42 of the moving plate 4 to make the elastic sheet body 42 elastically deform, as shown in fig. 6, in this embodiment, at least one pushing protrusion 31 is convexly disposed on the side edge of the guide core 3, and a guiding inclined surface 311 is formed on the pushing protrusion 31; meanwhile, at least one protrusion 421 corresponding to the pushing protrusion 31 is protruded on the elastic sheet 42. Preferably, the number of the pushing protrusions 31 and the number of the protrusions 421 are two, as shown in fig. 4 and 6.

In the present embodiment, as shown in fig. 1, the light-focusing assembly 5 includes a light-emitting element 51 and a light-receiving element 52 electrically connected to the PCB 6, respectively, wherein the light-emitting element 51 and the light-receiving element 52 form an optical path therebetween, that is, the light-emitting element 51 emits light which is received by the light-receiving element 52, and the light-blocking plate 40 is switched between blocking the optical path and being away from the optical path. Therefore, the light blocking plate 40 is located between the light emitting element 51 and the light receiving element 52 by the movement of the light blocking plate 40, that is, the light blocking plate 40 blocks the light path, or is away from between the light emitting element 51 and the light receiving element 52, that is, the light path is not blocked, thereby completing a one-time switching on function.

As for the combination of the light focusing assembly 5 and the base 1, there are two types:

(1) as shown in fig. 7 and 8, the lower end of the base 1 is upwardly and concavely provided with two grooves 11 for the light emitting element 51 and the light receiving element 52 to be embedded respectively, and a light channel 111 is formed between the two grooves 11; the light blocking plate 40 is disposed in the accommodating cavity 10 and is switched between the light channel 111 and the light channel 111. When the light blocking plate 40 is in the light passage 111, the light path is blocked, i.e., the light receiving element 52 does not receive the light emitted from the light emitting element 51; when the light blocking plate 40 is away from the light passage 111, the light path is not blocked, i.e., the light receiving element 52 receives the light emitted from the light emitting element 51.

(2) The light blocking plate 40 extends to the lower part of the base 1, so that the light path is blocked by the movement of the light blocking plate 40.

The working principle of the optical axis key switch of the embodiment is as follows:

when the core 3 is not pressed, as shown in fig. 9, the pushing projection 31 pushes the protrusion 421 outward, so that the elastic sheet 42 is elastically deformed outward and approaches the connecting portion 41. At this time, the light blocking plate 40 is not located between the light emitting element 51 and the light receiving element 52, that is, the optical path formed between the light emitting element 51 and the light receiving element 52 is not blocked, and the key switch in this state is set to be in the off state by the circuit setting on the PCB board 6.

When the guide core 3 is pressed downward, as shown in fig. 10, by the guiding action of the guiding inclined surface 311 on the pushing projection 31, during the downward movement of the guide core 3, the protrusion 421 slides along the guiding inclined surface 311, so that the elastic sheet body 42 is elastically restored, the light blocking plate 40 moves to between the light emitting element 51 and the light receiving element 52, that is, the light path formed between the light emitting element 51 and the light receiving element 52 is blocked, and the key switch is set to be in the on state in this state by the circuit setting on the PCB board 6.

When the guide core 3 is pressed, the spring 8 disposed between the guide core 3 and the base 1 is compressed, and when the pressing of the guide core 3 is released, the elastic restoring force of the spring 8 drives the guide core 3 to move upwards and return, so that the key switch returns to the off state, as shown in fig. 9.

In order to further improve the pressing feel and increase the sound generating function, as shown in fig. 11, in this embodiment, a torsion spring 7 is disposed on the base 1, and a pressing protrusion 32 for pressing the torsion spring 7 is convexly disposed on the side edge of the guide core 3. Meanwhile, a guiding inclined plane 10 is provided on the base 1, and in a natural state, one end of the torsion spring 7 extends to below the pressing protrusion 32 and above the guiding inclined plane 10. Specifically, the torsion spring 7 is made of stainless steel, i.e., a stainless steel torsion spring.

When the guide core 3 is pressed downwards, the pressing protrusion 32 is driven to move downwards, the pressing protrusion 32 presses one end of the torsion spring 7 downwards, when the torsion spring is pressed to a certain position, the guiding inclined plane 10 on the base 1 guides one end of the torsion spring 7 to be separated from the pressing protrusion 32, one end of the torsion spring 7 is bounced due to potential energy release to knock the base 1, the cover 2 and/or the pressing protrusion 32 to make a sound, and therefore the pressing and sounding function, sound effect and hand feeling are achieved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that other structures obtained by adopting the same or similar technical features as the above embodiments of the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides an optical axis key switch, includes a base, and sets up an upper cover on the base, and this upper cover lid fits and forms a holding chamber on the base, is provided with one in this holding intracavity and leads the core, should lead the core upper end and wear out from the upper cover upper end, its characterized in that still includes and sets up a rotor on the base and be located and lead the core side and connect in a pair of optical assembly of PCB board, is provided with on this rotor and blocks the tabula rase corresponding with the optical assembly.

2. The optical axis keyswitch of claim 1, wherein the moving plate comprises a connecting portion disposed on the base and a flexible plate body connected to the connecting portion, wherein the light blocking plate is disposed on the flexible plate body.

3. The optical axis keyswitch of claim 2, wherein the light blocking plate is encapsulated in a lower portion of the flexible sheet.

4. The optical axis keyswitch of claim 2, wherein the light blocking plate is formed by bending a lower portion of the flexible sheet.

5. The optical axis keyswitch of claim 2, wherein at least one pushing protrusion is disposed on the side of the core, and at least one protrusion corresponding to the pushing protrusion is disposed on the elastic sheet.

6. The optical axis keyswitch of claim 5, wherein a guide ramp is formed on the push tab.

7. The optical axis keyswitch of claim 1, wherein the light-aligning member includes a light-emitting element and a light-receiving element electrically connected to the PCB, wherein the light-emitting element and the light-receiving element form a light path therebetween, and the light blocking plate switches between blocking the light path and being away from the light path.

8. The optical axis keyswitch of claim 7, wherein the base has two recesses recessed upward from a lower end of the base for the light emitting element and the light receiving element to be inserted into, respectively, and a light channel is formed between the two recesses; the light blocking plate is arranged in the accommodating cavity and is switched between the light channel and the far light channel.

9. The optical axis keyswitch of claim 7, wherein the light blocking plate extends below the base.

10. The optical axis keyswitch of any one of claims 1 through 9, wherein a torsion spring is disposed on the base, and a pressing protrusion for pressing the torsion spring is disposed on the side of the guide core.