CN217690910U

CN217690910U - Spring sheet type membrane switch

Info

Publication number: CN217690910U
Application number: CN202123304352.0U
Authority: CN
Inventors: 王晓娇
Original assignee: Beijing Yinglida Sign Manufacturing Co ltd
Current assignee: Beijing Yinglida Sign Manufacturing Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-10-28
Anticipated expiration: 2031-12-24

Abstract

The utility model relates to a shell fragment formula membrane switch relates to membrane switch's technical field, and it includes the base plate and is fixed in the panel of base plate upper surface, a plurality of holding tanks, every have been seted up to the upper surface of base plate the diapire of holding tank all is fixed with electrically conductive shell fragment, the lower fixed surface of panel has a plurality of contact plates, and is a plurality of the contact plate is located correspondingly respectively the inside of holding tank, the both sides inner wall of holding tank is fixed with elastic ball, two respectively elastic ball symmetric distribution is in corresponding the both sides of electrically conductive shell fragment, and two elastic ball respectively with electrically conductive shell fragment butt. Through the elastic ball that sets up and electrically conductive shell fragment butt, the elastic ball can provide certain elasticity for electrically conductive shell fragment to improve the answer effect of electrically conductive shell fragment, reduce the risk that electrically conductive shell fragment takes place to warp, and then improve membrane switch's stability in use.

Description

Spring sheet type membrane switch

Technical Field

The application relates to the field of membrane switches, in particular to a spring plate type membrane switch.

Background

The membrane switch is an operating system integrating a key function, an indicating element and an instrument panel, has the characteristics of rigorous structure, attractive appearance, good sealing property, long service life and the like, and is widely applied to the fields of electronic communication, medical equipment, automobile industry, intelligent toys, household appliances and the like.

A membrane switch in the related art generally includes a panel and a substrate fixed on a lower surface of the panel, wherein the lower surface of the panel is provided with a plurality of contact plates, the substrate is provided with a plurality of arched conductive elastic pieces, and the plurality of conductive elastic pieces are respectively located under the corresponding contact plates. When the user presses the panel, the contact plate is abutted to the conductive elastic sheet, so that contact conduction is realized. When the user loosens the fingers, the panel resets under the action of the elastic force of the panel and the elastic force of the conductive elastic sheet, and the contact plate is separated from the conductive elastic sheet, so that power failure is realized.

According to the related art, when the force of pressing the panel by a user is large, the contact plate can excessively press the conductive elastic sheet, so that the risk of deformation of the conductive elastic sheet is easily caused, the service life of the membrane switch is influenced, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

In order to improve the life of membrane switch, this application provides a shell fragment formula membrane switch.

The application provides a shell fragment formula membrane switch adopts following technical scheme:

the utility model provides a shell fragment formula membrane switch, includes the base plate and is fixed in the panel of base plate upper surface, a plurality of holding tanks have been seted up to the upper surface of base plate, every the diapire of holding tank all is fixed with electrically conductive shell fragment, the lower fixed surface of panel has a plurality of contact plates, and is a plurality of the contact plate is located correspondingly respectively the inside of holding tank, the both sides inner wall of holding tank is fixed with elastic ball respectively, two elastic ball symmetric distribution is corresponding electrically conductive shell fragment's both sides, and two elastic ball respectively with electrically conductive shell fragment butt.

By adopting the technical scheme, when the contact plate extrudes the conductive elastic sheet, the conductive elastic sheet generates elastic deformation, and at the moment, the conductive elastic sheet extrudes the two elastic balls and enables the two elastic balls to generate elastic deformation. When the user loosens the fingers, the elastic ball can provide certain elastic force for the conductive elastic sheet, so that the recovery effect of the conductive elastic sheet is improved. The design can effectively reduce the risk of deformation of the conductive elastic sheet, and further improve the use stability of the membrane switch.

Optionally, a support hole is formed in the conductive elastic sheet, a support column is vertically fixed at the lower end of the contact plate, the support column can penetrate through the corresponding support hole, an elastic shifting sheet is fixed on the side wall of the support column, when the support column moves downwards, the shifting sheet is firstly abutted to the conductive elastic sheet, then the shifting sheet deforms and penetrates through the support hole, and at the moment, the contact plate is abutted to the conductive elastic sheet.

Through adopting above-mentioned technical scheme, when the user pressed the panel, the contact plate drove the support column downstream, and at this moment, plectrum and electrically conductive shell fragment butt. Along with the continuous motion of contact plate, the plectrum takes place elastic deformation under the butt of electrically conductive shell fragment, and afterwards, the plectrum passes from the supported hole, and then the plectrum resets under the effect of self elasticity. Meanwhile, the contact plate is abutted to the conductive elastic sheet, so that contact conduction is realized. Through setting up the plectrum, pass from the supported hole as the plectrum to the plectrum deformation arrives the in-process that resets, and comparatively crisp sound can take place for the plectrum, thereby has good suggestion effect to the user. This design can effectively reduce the risk that the user excessively pressed the panel to reduce the risk that the contact plate excessively extrudeed electrically conductive shell fragment, and then improve membrane switch's life. Meanwhile, the design can improve the touch feeling of the membrane switch, and further improve the use comfort of the membrane switch.

Optionally, a spring is arranged in the accommodating groove, and the spring is used for driving the supporting column to move upwards.

Through adopting above-mentioned technical scheme, provide good power that resets for support column and panel to make support column and panel can the rapid and stable reset, and then improve membrane switch's stability in use.

Optionally, a plurality of keys are fixed on the surface of the panel, and the plurality of keys are respectively located right above the corresponding contact plates.

By adopting the technical scheme, through setting the key, the user can conveniently find the position of the contact plate accurately, and the use convenience is further improved.

Optionally, the surface of the key is provided with an anti-slip groove for a finger of a user to be embedded into.

Through adopting above-mentioned technical scheme, through setting up anti-skidding groove, the risk that skids appears in reduction user's finger, and then improves membrane switch's stability in use.

Optionally, a braille block is fixed to the inner wall of the anti-slip groove.

By adopting the technical scheme, if the blind person uses the membrane switch, the blind person can sense the use of the keys by touching the braille blocks, so that the humanized design can be realized, and the practicability can be improved. If when the normal person used membrane switch, the braille piece can increase the frictional force of user's finger and button, further reduces the risk that the user's finger appears skidding, further improves the stability in use.

Optionally, the surface of the key and the inner wall of the anti-slip groove are respectively provided with a fluorocarbon paint layer.

By adopting the technical scheme, the self-cleaning effect of the key is improved, and dust or sundries are bonded on the key, so that the cleanliness of the key is improved.

Optionally, a plurality of fluorescent rings are fixed on the surface of the panel, and the plurality of keys are respectively located on the inner sides of the corresponding fluorescent rings.

By adopting the technical scheme, the night use capability of the membrane switch is improved by arranging the fluorescent ring, so that a user can quickly search the positions of the keys at night, and the practicability is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

the elastic ball is abutted against the conductive elastic sheet and can provide certain elastic force for the conductive elastic sheet, so that the recovery effect of the conductive elastic sheet is improved, the risk of deformation of the conductive elastic sheet is reduced, and the use stability of the membrane switch is improved;

through the arrangement of the shifting piece, when the shifting piece penetrates through the supporting hole and is deformed to be reset, the shifting piece can make a crisp sound, so that a good prompting effect is achieved for a user, the design can effectively reduce the risk that the user excessively presses the panel, the risk that the contact plate excessively extrudes the conductive elastic sheet is reduced, and the service life of the membrane switch is prolonged;

through setting up the braille piece, if the blind person uses membrane switch, the blind person can be through the usage of touching braille piece perception button, can realize humanized design, can improve the practicality again, if when the membrane switch was used to the normal person, the braille piece can increase the frictional force that the user pointed and the button, further reduces the risk that the user's finger appears skidding, further improves the stability in use.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a partial cross-sectional view of a substrate in an embodiment of the present application.

Fig. 3 is an enlarged schematic view of region a in fig. 2.

Description of reference numerals: 1. a substrate; 2. a panel; 3. accommodating grooves; 4. a conductive spring plate; 5. a contact plate; 6. pressing a key; 7. an elastic ball; 8. a support hole; 9. a support pillar; 10. a shifting sheet; 11. a spring; 12. an anti-slip groove; 13. a block of braille; 14. a fluorescent ring.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a spring piece type membrane switch. Referring to fig. 1 and 2, the elastic sheet type membrane switch includes a substrate 1, a panel 2 is fixedly connected to the upper surface of the substrate 1, a plurality of accommodating grooves 3 are uniformly formed in the upper surface of the substrate 1, and a conductive elastic sheet 4 is fixedly connected to the bottom wall of each accommodating groove 3.

Referring to fig. 2 and 3, a plurality of contact plates 5 are fixedly connected to the lower surface of the panel 2, the plurality of contact plates 5 are respectively located inside the corresponding receiving grooves 3, and the plurality of contact plates 5 are respectively located right above the corresponding conductive elastic pieces 4. Meanwhile, a plurality of keys 6 are integrally formed on the surface of the panel 2, and the keys 6 correspond to the contact plates 5 one by one, so that a user can conveniently and quickly determine the positions of the contact plates 5.

Referring to fig. 2 and 3, elastic balls 7 are fixed to inner walls of both sides of the accommodating groove 3, respectively, and the elastic balls 7 are made of an elastic material such as rubber, latex or silica gel. Meanwhile, the two elastic balls 7 are symmetrically distributed on two sides of the corresponding conductive elastic sheet 4, and the two elastic balls 7 are respectively abutted to the conductive elastic sheet 4.

When a user presses the key 6, the contact plate 5 moves downward and presses the conductive elastic sheet 4, at this time, the conductive elastic sheet 4 elastically deforms, and at the same time, the conductive elastic sheet 4 presses the two elastic balls 7 and elastically deforms the two elastic balls 7. When the user releases the fingers, the elastic balls 7 provide certain elastic force to the conductive elastic pieces 4, at this time, the conductive elastic pieces 4 are reset under the action of the elastic force of the elastic balls 7 and the elastic force of the elastic balls 7, meanwhile, the contact plate 5 moves upwards and resets, and the contact plate 5 is separated from the corresponding conductive elastic pieces 4.

Referring to fig. 2 and 3, a supporting hole 8 is formed in the conductive elastic sheet 4, a supporting column 9 is vertically and fixedly connected to the lower end of the contact plate 5, and the supporting column 9 can penetrate through the corresponding supporting hole 8. Meanwhile, the side wall of the supporting column 9 is fixedly connected with a shifting sheet 10, and the shifting sheet 10 is made of elastic materials such as elastic plastics or elastic resin.

When the supporting column 9 drives the shifting piece 10 to move downwards, the shifting piece 10 is firstly abutted against the conductive elastic sheet 4, and along with the continuous movement of the contact plate 5, the shifting piece 10 is elastically deformed under the abutting of the conductive elastic sheet 4. Subsequently, the paddle 10 passes through the support hole 8, and then the paddle 10 is reset by its own elastic force, and at the same time, the contact plate 5 abuts against the conductive elastic piece 4. When the plectrum 10 passes through the supporting hole 8 and the plectrum 10 is in the process from deformation to restoration, the plectrum 10 can make a crisp sound, so that a good prompting effect is provided for a user, and the risk that the user excessively presses the panel 2 is reduced.

Referring to fig. 2 and 3, a spring 11 made of an insulating material is disposed in the accommodating groove 3, the spring 11 penetrates through the supporting hole 8, one end of the spring 11 is fixedly connected with the supporting column 9, and the other end of the spring is fixedly connected with the bottom wall of the accommodating groove 3. Meanwhile, the spring 11 is used to drive the support column 9 to move upward, thereby providing a good restoring force to the support column 9 and the like.

Referring to fig. 2 and 3, the surface of the key 6 is provided with an anti-slip groove 12 for the user's finger to insert, so as to reduce the risk of slipping of the user's finger. The Braille blocks 13 are integrally formed on the inner wall of the anti-slip groove 12, so that the blind can use the anti-slip groove conveniently, and the risk of slipping of fingers of a user can be further reduced.

Referring to fig. 2 and 3, the surface of the key 6 and the inner wall of the anti-slip groove 12 are coated with fluorocarbon paint respectively, and the fluorocarbon paint forms a fluorocarbon paint layer after being cooled, so that the self-cleaning capability of the key 6 is improved, and the cleanliness of the key 6 is improved. Meanwhile, the surface of the panel 2 is fixedly connected with a plurality of fluorescent rings 14, and a plurality of keys 6 are respectively positioned on the inner sides of the corresponding fluorescent rings 14 so as to increase the night use capability of the membrane switch.

The implementation principle of the elastic sheet type membrane switch in the embodiment of the application is as follows: when the user presses the key 6, the contact plate 5 moves downward and presses the conductive elastic sheet 4, at this time, the conductive elastic sheet 4 elastically deforms, and then the conductive elastic sheet 4 presses the two elastic balls 7 and elastically deforms the two elastic balls 7. When the user releases the fingers, the elastic balls 7 provide certain elastic force for the conductive elastic sheet 4, at this time, the conductive elastic sheet 4 is reset under the action of the elastic force of the elastic balls 7 and the self elastic force, and meanwhile, the contact plate 5 moves upwards and resets, and the contact plate 5 is separated from the corresponding conductive elastic sheet 4. Utilize elastic ball 7 to provide certain elasticity for electrically conductive shell fragment 4 to improve electrically conductive shell fragment 4's answer effect, reduce electrically conductive shell fragment 4 and take place the risk of warping, and then improve membrane switch's stability in use.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a shell fragment formula membrane switch, includes base plate (1) and is fixed in panel (2) of base plate (1) upper surface, a plurality of holding tanks (3) have been seted up to the upper surface of base plate (1), every the diapire of holding tank (3) all is fixed with electrically conductive shell fragment (4), the lower fixed surface of panel (2) has a plurality of contact plates (5), and is a plurality of contact plate (5) are located correspondingly respectively the inside of holding tank (3), its characterized in that: the both sides inner wall of holding tank (3) is fixed with elastic ball (7) respectively, two elastic ball (7) symmetric distribution is corresponding the both sides of electrically conductive shell fragment (4), and two elastic ball (7) respectively with electrically conductive shell fragment (4) butt, supporting hole (8) have been seted up on electrically conductive shell fragment (4), the lower tip of contact plate (5) is vertical to be fixed with support column (9), just support column (9) can pass correspondingly supporting hole (8), the lateral wall of support column (9) is fixed with elastic plectrum (10).

2. The switch of claim 1, wherein: a spring (11) is arranged in the accommodating groove (3), and the spring (11) is used for driving the supporting column (9) to move upwards.

3. The switch of claim 1, wherein: the surface of the panel (2) is fixed with a plurality of keys (6), and the keys (6) are respectively positioned right above the corresponding contact plates (5).

4. A dome switch according to claim 3, wherein: the surface of the key (6) is provided with an anti-slip groove (12) for a user to insert fingers.

5. The switch of claim 4, wherein: braille blocks (13) are fixed on the inner wall of the anti-slip groove (12).

6. The switch of claim 4, wherein: fluorocarbon paint layers are respectively arranged on the surface of the key (6) and the inner wall of the anti-slip groove (12).

7. A leaf spring type membrane switch according to claim 3, wherein: a plurality of fluorescent rings (14) are fixed on the surface of the panel (2), and a plurality of keys (6) are respectively positioned on the inner sides of the corresponding fluorescent rings (14).