CN210516554U

CN210516554U - Impact-resistant membrane switch

Info

Publication number: CN210516554U
Application number: CN201921758393.7U
Authority: CN
Inventors: 张爱民
Original assignee: Xiamen Mingcai Electronic Technology Co Ltd
Current assignee: Xiamen Mingcai Electronic Technology Co Ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-05-12
Anticipated expiration: 2029-10-18

Abstract

The utility model discloses a membrane switch who shocks resistance relates to an electronic components, and its technical scheme main points include panel layer, face glue film, go up circuit layer, isolation layer, lower circuit layer and primer layer, the button position on panel layer and last circuit layer forms first convex surface and the second convex surface that makes progress protrudingly respectively, all be provided with the space between panel layer and last circuit layer, last circuit layer and the lower circuit layer, all seted up the intercommunication on face glue film and the isolation layer and correspond space and external exhaust passage, panel layer has the buffer layer towards the equal adhesion of one side of face glue film and one side of last circuit layer towards face glue film, first cushion chamber has been seted up in the buffer layer, first cushion chamber intussuseption is filled with the aerogel, the utility model discloses good shock resistance has.

Description

Impact-resistant membrane switch

Technical Field

The utility model relates to an electronic components, more specifically say that it relates to a membrane switch that shocks resistance.

Background

The membrane switch is an operation system integrating a key function, an indicating element and an instrument panel. The membrane switch has the advantages of rigorous structure, attractive appearance and good sealing property. Has the characteristics of moisture resistance, long service life and the like. The method 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.

At present, a chinese patent with publication number CN201655615U discloses a membrane switch, which includes a panel layer, a surface glue layer, an upper circuit layer, an isolation layer, a lower circuit layer and a bottom glue layer, wherein the key positions of the panel layer and the upper circuit layer are pressed into convex surfaces, and the width of the lead-out line of the convex key is 1.5-2.5 times of the width of the lead.

In the prior art, similar to the membrane switch, gaps exist among the panel layer, the upper circuit layer and the lower circuit layer, after a user presses the membrane switch to conduct a circuit, air in the gaps can be extruded and impact is generated on the panel layer and the upper circuit layer, and after the membrane switch is used for a long time, the panel layer and the upper circuit layer are impacted to cause fracture, so that a room for improvement is left.

SUMMERY OF THE UTILITY MODEL

To the deficiency that prior art exists, the utility model aims to provide a membrane switch that shocks resistance, its advantage lies in having good shock resistance.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a membrane switch who shocks resistance, includes panel layer, face glue film, goes up circuit layer, isolation layer, lower circuit layer and primer layer, the button position on panel layer and last circuit layer forms first convex surface and the second convex surface that makes progress protrudingly respectively, all be provided with the space between panel layer and last circuit layer, last circuit layer and the lower circuit layer, all seted up the intercommunication on face glue film and the isolation layer and corresponded space and external exhaust passage, the panel layer has the buffer layer towards one side of face glue film and the adhesion of last circuit layer towards one side of face glue film, seted up first cushion chamber in the buffer layer, first cushion chamber intussuseption is filled with the aerogel.

By adopting the technical scheme, when the membrane switch is pressed, the first convex surface moves downwards, air in a gap between the panel layer and the upper circuit layer is exhausted through the exhaust channel, then the second convex surface is extruded, air in the gap between the upper circuit layer and the lower circuit layer is exhausted through the exhaust channel, and a circuit is conducted after the upper circuit layer is contacted with the lower circuit layer; the air in the gap passes through the exhaust channel to the outside, so that the impact of the air in the gap on the panel layer and the upper circuit layer can be reduced; aerogel in the first buffer cavity has stronger cushioning effect, and can further reduce the impact of the air in the gap on the panel layer and the upper circuit layer, so that the membrane switch has good impact resistance.

The utility model discloses further set up to: and a second buffer cavity is formed in the key position of the panel layer.

Through adopting above-mentioned technical scheme, when pressing membrane switch, can make the impact lateral diffusion that produces the panel layer when pressing through the second cushion chamber to slow down the deformation degree of panel layer, consequently can strengthen the shock resistance of panel layer.

The utility model discloses further set up to: the second buffer cavity is of a honeycomb structure.

Through adopting above-mentioned technical scheme, the design of honeycomb structure can make the second cushion chamber have stronger structural strength and stretching capacity, further strengthens the shock resistance of panel layer.

The utility model discloses further set up to: and a third buffer cavity is formed in the key position of the lower circuit layer.

Through adopting above-mentioned technical scheme, when pressing membrane switch, can make the impact that produces the last circuit layer when pressing transversely diffuse through the third cushion chamber to slow down the deformation degree on last circuit layer, consequently can strengthen the shock resistance on last circuit layer.

The utility model discloses further set up to: the third buffer cavity is internally provided with a wave-shaped gasket, the wave trough position of the wave-shaped gasket is provided with a buffer ball, and the buffer ball is a hollow rubber ball.

By adopting the technical scheme, the waveform gasket has good elasticity and impact resistance, so that the impact resistance of the upper circuit layer can be enhanced; and hollow buffer ball produces deformation when receiving the extrusion, can transmit the impact to the wave form gasket, makes the pressure that the wave form gasket received more even, can prolong the practical life of wave form gasket.

The utility model discloses further set up to: one side of the second convex surface facing the panel layer is connected with an elastic sheet, and the elastic sheet covers the upper surface of the second convex surface.

Through adopting above-mentioned technical scheme, the structural strength of second convex surface can be strengthened in the setting of flexure strip to promote the resetting of second convex surface when the upper circuit layer is kick-backed, can also provide ascending resilience force to first convex surface, can promote whole membrane switch's resilience, thereby can improve this membrane switch's use travelling comfort.

The utility model discloses further set up to: the elastic piece is in an arc shape with the wave crest facing upwards, a plurality of reinforcing ribs are arranged on the outer wall of the elastic piece, and the reinforcing ribs are radially distributed by taking the top point of the elastic piece as the center.

Through adopting above-mentioned technical scheme, the structural strength of flexure strip can be strengthened in the setting of strengthening rib, avoids using for a long time the back because of the flexure strip fracture, and leads to panel layer or last circuit layer to be impaled, and then influences membrane switch's use.

The utility model discloses further set up to: and hollow parts are arranged between the adjacent reinforcing ribs and are triangular.

Through adopting above-mentioned technical scheme, for the flexure strip of whole circular structure, the power that needs when its is pressed of the flexure strip of fretwork is littleer, can reduce the extrusion of user to the panel layer to prolong film switch's life.

To sum up, the utility model has the advantages of it is following:

1. the air in the gap is exhausted to the outside through the exhaust channel, so that the impact of the air in the gap on the panel layer and the upper circuit layer can be reduced, the aerogel in the first buffer cavity has a strong buffer effect, and the impact of the air in the gap on the panel layer and the upper circuit layer can be further reduced when the air in the gap is pressed, so that the membrane switch has good impact resistance;

2. through the arrangement of the second buffer cavity and the third buffer cavity, impact on the panel layer and the upper circuit layer can be diffused transversely when the panel layer and the upper circuit layer are pressed, and the deformation degree of the panel layer and the upper circuit layer is reduced, so that the impact resistance of the panel layer and the upper circuit layer is improved;

3. through the elastic sheet that sets up the fretwork, be favorable to membrane switch's resilience, provide certain pressing and feel.

Drawings

FIG. 1 is a schematic sectional view of the present embodiment;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

fig. 3 is a schematic structural view of the elastic sheet in this embodiment.

Description of reference numerals: 1. a panel layer; 2. a surface glue layer; 3. an upper circuit layer; 4. an isolation layer; 5. a lower circuit layer; 6. a primer layer; 7. a first convex surface; 8. a second convex surface; 9. a void; 10. an exhaust passage; 11. a buffer layer; 12. a first buffer chamber; 13. a second buffer chamber; 14. a third buffer chamber; 15. a wave-shaped gasket; 16. a buffer ball; 17. an elastic sheet; 18. reinforcing ribs; 19. a hollow-out part.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A shock-resistant membrane switch is shown in figure 1 and comprises a panel layer 1, a surface glue layer 2, an upper circuit layer 3, an isolation layer 4, a lower circuit layer 5 and a bottom glue layer 6 which are sequentially arranged from top to bottom, and all the layers are bonded through glue.

Panel layer 1 and last circuit layer 3's button position forms the first convex surface 7 and the second convex surface 8 that make progress protrudingly respectively, panel layer 1 and last circuit layer 3, go up circuit layer 3 and all be provided with space 9 down between the circuit layer 5, all set up the intercommunication on face glue layer 2 and the isolation layer 4 and correspond space 9 and external exhaust passage 10, panel layer 1 has buffer layer 11 towards the equal adhesion in one side of face glue layer 2 and last circuit layer 3 towards one side of face glue layer 1, first cushion chamber 12 has been seted up in buffer layer 11, first cushion chamber 12 intussuseption is filled with the aerogel. When the membrane switch is pressed, air in the gap 9 is respectively exhausted to the outside through the corresponding exhaust channels 10, so that the impact of the air on the panel layer 1 and the upper circuit layer 3 during pressing can be reduced; and the aerogel in the first buffer cavity 12 has a good buffer effect, and can further reduce the impact of the air in the gap 9 on the panel layer 1 and the upper circuit layer 3 when being pressed.

As shown in fig. 1, a second buffer cavity 13 is formed at the key position of the panel layer 1, and the second buffer cavity 13 is in a honeycomb structure. When pressing membrane switch, can transversely diffuse the pressure of user's finger to panel layer 1 through second cushion chamber 13 to slow down panel layer 1's deformation degree, improve panel layer 1's shock resistance.

As shown in fig. 2, a third buffer cavity 14 is formed at the key position of the upper circuit layer 3, a wave-shaped gasket 15 is installed in the third buffer cavity 14, and a hollow buffer ball 16 is fixed between two side edges of adjacent wave crests of the wave-shaped gasket 15. The wave-shaped gasket 15 has good elasticity and impact resistance, the impact resistance of the upper circuit layer 3 can be improved, the hollow buffer ball 16 is extruded to deform, pressure can be transmitted transversely, the pressure on the wave-shaped gasket 15 is more uniform, and the service life of the wave-shaped gasket 15 is prolonged.

As shown in fig. 2, an elastic sheet 17 is fixed on one side of the second convex surface 8 facing the panel layer 1, and the elastic sheet 17 covers the upper surface of the second convex surface 8. When pressing membrane switch, can provide good pressing through flexure strip 17 and feel to strengthen second convex surface 8's surface strength, after loosening membrane switch, flexure strip 17 kick-backs and drives second convex surface 8 and kick-backs, and provide ascending resilience force to first convex surface 7, promote whole membrane switch's resilience, consequently can improve this membrane switch's use travelling comfort.

Further, as shown in fig. 3, in order to improve the structural strength of the elastic piece 17 and avoid the switch damage caused by the breakage of the elastic piece 17 after a long time use, in the embodiment, the elastic piece 17 is in an arc shape with the wave crest facing upward, four reinforcing ribs 18 are fixed on the outer wall of the elastic piece 17, and the reinforcing ribs 18 are radially distributed with the peak of the elastic piece 17 as the center.

Furthermore, a hollow part 19 is arranged between the adjacent reinforcing ribs 18, and the hollow part 19 is triangular. Compared with the elastic piece 17 with the whole circular structure, the elastic piece 17 with the partially hollowed-out structure needs smaller force when being pressed, the pressing force when a user presses the panel layer 1 is smaller, the extrusion of the panel layer 1 can be reduced, and the service life of the panel layer 1 is prolonged.

The utility model discloses a working process and beneficial effect as follows: when pressing membrane switch, first convex surface 7 moves down, drive buffer layer 11 downstream, and produce deformation, then make the air in the space 9 between panel layer 1 and last circuit layer 3 discharge through exhaust passage 10, then second convex surface 8 receives the extrusion downstream, buffer layer 11 on the second convex surface 8 produces deformation, go up the air in the space 9 between circuit layer 3 and the lower circuit layer 5 and discharge through exhaust passage 10, until last circuit layer 3 and lower circuit layer 5 contact the back, membrane switch switches on.

In summary, the first buffer cavity 12, the second buffer cavity 13, the third buffer cavity 14 and the exhaust channel 10 can reduce the impact on the panel layer 1 and the upper circuit layer 3, so that the membrane switch has good impact resistance.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a membrane switch who shocks resistance, includes panel layer (1), face glue layer (2), goes up circuit layer (3), isolation layer (4), lower circuit layer (5) and primer layer (6), the button position of panel layer (1) and last circuit layer (3) forms first convex surface (7) and second convex surface (8) that make progress protrudingly respectively, all be provided with space (9), its characterized in that between panel layer (1) and last circuit layer (3), last circuit layer (3) and lower circuit layer (5): all seted up the intercommunication on face glue film (2) and isolation layer (4) and corresponded space (9) and external exhaust passage (10), panel layer (1) has buffer layer (11) towards one side of face glue film (2) and last circuit layer (3) towards the equal adhesion in one side of face glue film (2), seted up first cushion chamber (12) in buffer layer (11), first cushion chamber (12) intussuseption is filled with the aerogel.

2. An impact-resistant membrane switch as claimed in claim 1, wherein: and a second buffer cavity (13) is formed in the key position of the panel layer (1).

3. An impact-resistant membrane switch as claimed in claim 2, wherein: the second buffer cavity (13) is of a honeycomb structure.

4. An impact-resistant membrane switch as claimed in claim 1, wherein: and a third buffer cavity (14) is formed in the key position of the lower circuit layer (5).

5. An impact-resistant membrane switch as claimed in claim 4, wherein: a wave-shaped gasket (15) is arranged in the third buffer cavity (14), and a hollow buffer ball (16) is arranged at the wave trough position of the wave-shaped gasket (15).

6. An impact-resistant membrane switch as claimed in claim 1, wherein: one side of the second convex surface (8) facing the panel layer (1) is provided with an elastic sheet (17), and the elastic sheet (17) covers the upper surface of the second convex surface (8).

7. An impact-resistant membrane switch as claimed in claim 6, wherein: the cross section of the elastic piece (17) is in an arc shape with the wave crest upward, a plurality of reinforcing ribs (18) are arranged on the outer wall of the elastic piece (17), and the reinforcing ribs (18) are radially distributed by taking the top point of the elastic piece (17) as the center.

8. An impact-resistant membrane switch as claimed in claim 7, wherein: and a hollow part (19) is arranged between the adjacent reinforcing ribs (18), and the hollow part (19) is triangular.