CN213752474U - Adopt membrane switch of ya keli light guide plate - Google Patents

Abstract

The utility model provides an adopt membrane switch of ya keli light guide plate, includes the switch main part, the switch main part includes the light guide plate of making by ya keli material, its characterized in that: the switch main body is provided with a plurality of light inlet positions which are arranged along the contour edge of the switch main body in a surrounding mode, and each light inlet position is internally provided with a light source module capable of emitting light. The utility model discloses set up a plurality of light positions of advancing that arrange along its profile edge encircleing in the switch main part, and each advances to be provided with a light source module that can give out light in the light position, when all light source modules all give out light, light is at the peripheral demonstration of light guide plate, and all evenly spread the light on making whole light guide plate to the middle part gathering of light guide plate, thereby effectively prevent to appear on the membrane switch and show strong phenomenon on one side weak phenomenon, and the light under this mode shows the equipartition on the membrane switch, luminance is high, can effectively guarantee the light display effect of button.

Description

Adopt membrane switch of ya keli light guide plate

Technical Field

The utility model relates to a membrane switch field, concretely relates to adopt membrane switch of ya keli light guide plate.

Background

The membrane switch is an operation system integrating a key function, an indicating element and an instrument panel, and is widely applied to the fields of electronic communication and electronic measurement instruments, industrial control, medical equipment, automobile industry, intelligent toys, household appliances and the like. The existing luminous membrane switch is usually provided with an LED lamp on a circuit board, after the switch is pressed down, the circuit board is switched on, and the LED emits light to enable the membrane switch to emit light, so that the luminous membrane switch is convenient to use in a place with dark light.

The light guide effect on the existing membrane switch is poor, and the phenomenon that the display light is strong and weak at one side often appears on the membrane switch, so that the display effect of the keys is seriously influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides an adopt membrane switch of ya keli light guide plate.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides an adopt membrane switch of ya keli light guide plate, includes the switch main part, the switch main part includes the light guide plate of making by ya keli material, its characterized in that: the switch main body is provided with a plurality of light inlet positions which are arranged along the contour edge of the switch main body in a surrounding mode, and each light inlet position is internally provided with a light source module capable of emitting light.

The utility model discloses in, membrane switch still includes rubber casing, the storage tank has been seted up to rubber casing's bottom surface, the switch main part is installed in the storage tank.

The utility model discloses in, be equipped with the adhesive linkage between light guide plate and the rubber casing.

The utility model discloses in, be equipped with the grafting portion that a plurality of located in the storage tank on the rubber housing, be equipped with the mating holes that a plurality of runs through the switch main part in the switch main part, each grafting portion has passed a mating holes, all is equipped with in each grafting portion and fixes the arch in the storage tank with the switch main part after passing the mating holes.

The utility model discloses in, the switch main part includes by preceding light guide plate, isolation glue film, isolation layer, the circuit layer that connects gradually after to, be equipped with the shell fragment that can trigger circuit layer control signal on the isolation layer, light source module locates on the circuit layer.

The utility model discloses in, be equipped with the protruding button that sets up of a plurality of on rubber housing's the front, all be equipped with the drive division that is used for driving the shell fragment on the back of each button, be equipped with the through-hole that supplies the drive division to pass on the light guide plate.

The utility model has the advantages that: the utility model discloses set up a plurality of light positions of advancing that arrange along its profile edge encircleing in the switch main part, and each advances to be provided with a light source module that can give out light in the light position, when all light source modules all give out light, light is at the peripheral demonstration of light guide plate, and all evenly spread the light on making whole light guide plate to the middle part gathering of light guide plate, thereby effectively prevent to appear on the membrane switch and show strong phenomenon on one side weak phenomenon, and the light under this mode shows the equipartition on the membrane switch, luminance is high, can effectively guarantee the light display effect of button.

Drawings

The invention will be further explained with reference to the drawings and the embodiments below:

FIG. 1 is a front view of the present embodiment;

FIG. 2 is an exploded view of the present embodiment;

fig. 3 is a side schematic view of the present embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.

Referring to fig. 1 to 3, a membrane switch using an acryl light guide plate includes a switch main body 10 and a rubber housing 40. Further, the switch main body 10 includes a light guide plate 2 made of an acrylic material, the switch main body 10 is provided with a plurality of light inlet positions 20 arranged around the contour edge of the switch main body, each light inlet position 20 is provided with a light source module 30 capable of emitting light, and the light source modules 30 are LEDs; when all the light source modules 30 emit light, the light is displayed on the periphery of the light guide plate 2 and is collected to the middle of the light guide plate 2, so that the light is uniformly distributed on the whole light guide plate 2, thereby effectively preventing the phenomenon that the display light is strong and weak on one side on the membrane switch, and ensuring the display effect of the keys 403. Still further, a receiving groove is formed in the bottom surface of the rubber housing 40, and the switch main body 10 is mounted in the receiving groove to prevent light from the light source module 30 from leaking out of the periphery of the membrane switch.

Preferably, a plurality of inserting portions 401 arranged in the accommodating groove are arranged on the rubber housing 40, a plurality of matching holes penetrating through the switch main body 10 are arranged on the switch main body 10, each inserting portion 401 penetrates through one matching hole, and each inserting portion 401 is provided with an annular protrusion 402 which fixes the switch main body 10 in the accommodating groove after penetrating through the matching holes, so that the switch main body 10 is fixed in the accommodating groove, and the switch main body 10 is positioned and installed. Further, the bottom of the rubber housing 40 is further provided with a rib 405 along the outline of the opening of the accommodating groove, and when the switch main body 10 is fixed in the accommodating groove, the rib 405 abuts against the bottom surface of the switch main body 10, so as to enhance the stability of the installation of the switch main body 10. In addition, a pad 406 may extend from the bottom of the rubber housing 40 to avoid the depression of the middle of the switch body 10.

Preferably, an adhesive layer 1 is disposed between the light guide plate 2 and the rubber housing 40, and the adhesive layer 1 is a 3M9731 double-sided tape, which may further enhance the connection stability between the switch main body 10 and the rubber housing 40.

Preferably, the switch main body 10 includes a light guide plate 2, an isolation glue layer 3, an isolation layer 4 and a circuit layer 5 which are sequentially connected from front to back, wherein the isolation glue layer 3 is a spacer tape which bonds the light guide plate 2 and the isolation layer 4 into a whole. Furthermore, the isolating layer 4 is provided with a spring sheet 41 which can trigger the circuit layer 5 to send out a control signal, and the circuit layer 5 is provided with a contact matched with the spring sheet 41, so that the membrane switch can send out a corresponding control instruction. In the above structure, the light source module 30 is disposed on the circuit layer 5, so that the light source module 30 can emit light simultaneously when the membrane switch is used. In addition, a plurality of nuts 60 are disposed on the back surface of the switch main body 10 to facilitate connection of the membrane switch with other devices.

Preferably, a plurality of protruding keys 403 are disposed on the front surface of the rubber housing 40, a driving portion 404 for driving the elastic sheet 41 is disposed on the back surface of each key 403, and when a user presses the key 403, the driving portion 404 drives the elastic sheet 41 to move and send a control command. In addition, in order to avoid that the driving part 404 of the key 403 cannot normally drive the elastic sheet 41 to work due to the over-high hardness of the light guide plate 2, a through hole 6 through which the driving part 404 passes is formed in the light guide plate 2, and when a user presses the key 403, the driving part 404 passes through the through hole 6 and abuts against the position, corresponding to the elastic sheet 41, of the isolating adhesive layer 3 to drive the elastic sheet 41 to normally work.

Preferably, the switch main body 10 is provided with a plurality of light compensation positions 50 distributed at the middle position of the switch main body, and one light source module 30 is arranged in each light compensation position 50, so that when the size of the membrane switch is too large, the light source module 30 on the light compensation positions can be used for light compensation, and the light display quality of the membrane switch with a large size is ensured.

The above description is only the preferred embodiment of the present invention, and the technical solutions of the objects of the present invention are all within the protection scope of the present invention as long as the objects are achieved by the substantially same means.

Claims (6)

1. The utility model provides an adopt membrane switch of ya keli light guide plate, includes switch main part (10), switch main part (10) include light guide plate (2) made by ya keli material, its characterized in that: the switch main body (10) is provided with a plurality of light inlet positions (20) which are arranged along the contour edge of the switch main body in a surrounding mode, and a light source module (30) capable of emitting light is arranged in each light inlet position (20).

2. The membrane switch using the acryl light guide plate according to claim 1, wherein: the membrane switch further comprises a rubber shell (40), a containing groove is formed in the bottom surface of the rubber shell (40), and the switch main body (10) is installed in the containing groove.

3. The membrane switch using the acryl light guide plate according to claim 2, wherein: and an adhesive layer (1) is arranged between the light guide plate (2) and the rubber shell (40).

4. The membrane switch using the acryl light guide plate according to claim 2, wherein: the switch is characterized in that a plurality of inserting parts (401) arranged in the accommodating groove are arranged on the rubber shell (40), a plurality of matching holes penetrating through the switch main body (10) are formed in the switch main body (10), each inserting part (401) penetrates through one matching hole, and each inserting part (401) is provided with an annular bulge (402) used for fixing the switch main body (10) in the accommodating groove after penetrating through the matching holes.

5. The membrane switch using the acryl light guide plate according to claim 2, wherein: switch main part (10) include by preceding light guide plate (2), isolation glue film (3), isolation layer (4), the circuit layer (5) that connects gradually after to, be equipped with on isolation layer (4) and trigger circuit layer (5) and send control signal's shell fragment (41), light source module (30) are located on circuit layer (5).

6. The membrane switch using the acryl light guide plate according to claim 5, wherein: the front surface of the rubber shell (40) is provided with a plurality of protruding keys (403), the back surface of each key (403) is provided with a driving part (404) for driving the elastic sheet (41), and the light guide plate (2) is provided with a through hole (6) for the driving part (404) to pass through.

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