Structure applying anti-interference shielding film switch

Abstract

The utility model relates to the field of membrane switch structures, in particular to a membrane switch structure applying anti-interference shielding, and adopts the technical scheme that the membrane switch structure applying anti-interference shielding comprises a contact layer, a lower line key conductive ink layer, a lower line conductive substrate, a panel layer, an upper line anti-interference shielding circuit layer, a key isolation layer substrate and a soft shell assembly, the lower end of the panel layer is provided with an upper line anti-interference shielding circuit layer, the lower end of the upper line anti-interference shielding circuit layer is provided with a key isolation layer base material, the lower end of the key isolation layer base material is provided with a contact layer, the lower end of the contact layer is provided with a lower line key conductive ink layer, and the lower end of the lower line key conductive ink layer is provided with a lower line conductive base material. According to the utility model, the upper wire anti-interference shielding circuit layer is additionally arranged on the key isolation layer base material, so that the interference of static electricity generated when a human body is in contact with an instrument and static electricity on a control panel on a precise medical instrument can be effectively avoided, and the precision of the precise medical instrument in use is improved.

Description

Technical Field

[0001] The utility model belongs to the field of membrane switch structures, and particularly relates to an anti-interference shielding membrane switch structure. Background Art

[0002] A membrane switch is an operating system integrating button functions, indicating elements, and instrument panels, which consists of four parts: an upper circuit, a line key layer, a lower circuit, and a bottom adhesive layer. When the membrane switch is pressed, the contacts of the upper circuit deform downward and contact and conduct with the electrodes of the lower circuit. After the finger is released, the contacts of the upper circuit bounce back to their original positions, the circuit is disconnected, and a signal is triggered in the loop. The membrane switch structure is rigorous, has a beautiful appearance, and good sealing performance, and has the characteristics of moisture-proof and long service life, and is widely used in fields such as electronic communication, electronic measurement instruments, industrial control, medical equipment, automotive industry, intelligent toys, and household appliances.

[0003] In the application of the existing membrane switch structure to the precision medical industry, since the human body itself will carry static electricity, the static electricity existing on the user when contacting the product or the control panel will cause a certain interference to the monitoring of precision medical instruments, thereby affecting the precision of the medical instruments during use.

[0004] Therefore, aiming at the problem that when the above-mentioned membrane switch structure is used for precision medical instruments, the static electricity carried by the user himself and the static electricity on the control panel will both affect the use accuracy of the medical instruments, an anti-interference shielding membrane switch structure is developed. By installing an anti-interference structure and a housing protection structure on the membrane switch structure, the static electricity carried by the human body itself or the static electricity on the control panel can be effectively reduced from interfering with the medical instruments, and the service life of the device can be improved. Summary of the Utility Model

[0005] In order to overcome the problem that when the membrane switch structure is used for precision medical instruments, the monitoring precision of the instrument is easily affected by static electricity on human contact and the control panel.

[0006] The technical solution of the utility model is: an anti-interference shielding membrane switch structure, which includes a contact layer, a lower-line button conductive ink layer, and a lower-line conductive substrate, and also includes a panel layer, an upper-line anti-interference shielding circuit layer, a button isolation layer substrate, and a soft shell assembly. The inner wall of the soft shell assembly is installed with a panel layer, an upper-line anti-interference shielding circuit layer, a button isolation layer substrate, a contact layer, a lower-line button conductive ink layer, and a lower-line conductive substrate. The lower end of the panel layer is installed with an upper-line anti-interference shielding circuit layer, the lower end of the upper-line anti-interference shielding circuit layer is installed with a button isolation layer substrate, the lower end of the button isolation layer substrate is installed with a contact layer, the lower end of the contact layer is installed with a lower-line button conductive ink layer, and the lower end of the lower-line button conductive ink layer is installed with a lower-line conductive substrate.

[0007] Preferably, by adding an upper anti-interference shielding circuit layer on the substrate of the key isolation layer, it is possible to effectively avoid the static electricity generated by human contact with the instrument and the static electricity on the control board from interfering with the precision medical instrument, so as to improve the accuracy of the precision medical instrument during use.

[0008] Preferably, button bodies are installed at the center of the upper end of the panel layer at equal intervals, and function labels are installed at the rear edge of the upper end of the panel layer. Through the function labels, it is convenient for users to operate according to the functions of the button bodies.

[0009] Preferably, metal shrapnel are installed at the center of the upper end of the contact layer at equal intervals, and the upper ends of the metal shrapnel are attached to the lower ends of the button bodies. Through the metal shrapnel, the electrical signal can be transmitted to the household appliance in cooperation with the button bodies.

[0010] Preferably, a flexible circuit board is fixedly connected to the front end of the lower conductive substrate, and a circuit connector is fixedly connected to the front end of the flexible circuit board. Through the flexible circuit board and the circuit connector, it is convenient for users to install the membrane switch on the household appliance.

[0011] Preferably, the soft shell assembly includes an outer soft shell, a top soft film and a bottom soft film. The top soft film is fixedly connected to the upper end of the outer soft shell, and the bottom soft film is installed at the lower end of the outer soft shell. The panel layer, the upper anti-interference shielding circuit layer, the substrate of the key isolation layer, the contact layer, the lower key conductive ink layer, and the lower conductive substrate are all installed inside the outer soft shell. Through the outer soft shell, the bottom soft film, the panel layer, the upper anti-interference shielding circuit layer, the substrate of the key isolation layer, the contact layer, the lower key conductive ink layer, and the lower conductive substrate can be carried and protected.

[0012] Preferably, the housing assembly includes a through hole formed through the front end of the outer soft shell, and the flexible circuit board passes through the through hole and is located on the front outer wall of the outer soft shell. Through the through hole, the flexible circuit board can be limited and fixed to improve its service life.

[0013] Equidistantly distributed first grooves are formed through the upper and lower ends of the top soft film, and second grooves are formed through the rear edges of the upper and lower ends of the top soft film. The first grooves are adapted to the button bodies, and the second grooves are adapted to the function labels. Through the first grooves and the second grooves, the button bodies and the function labels can be assisted in being limited to improve their service lives.

[0014] Advantages of the present utility model:

[0015] 1. By adding an upper anti-interference shielding circuit layer on the substrate of the key isolation layer, it is possible to effectively avoid the static electricity generated by human contact with the instrument from interfering with the precision medical instrument, so as to improve the accuracy of the precision medical instrument during use;

[0016] 2. The outer soft shell can carry and protect the underlying soft film, panel layer, upper anti-interference shielding circuit layer, key isolation layer substrate, contact layer, lower key conductive ink layer, and lower conductive substrate. Compared with the existing soft film structure, it can better protect the internal electronic components. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. shows a three-dimensional structural schematic diagram of the anti-interference shielding membrane switch structure applied to the present invention;

[0018] Figure 2 FIG. shows a three-dimensional structural exploded schematic diagram of the anti-interference shielding membrane switch structure applied to the present invention;

[0019] Figure 3 FIG. shows a three-dimensional structural schematic diagram of the soft shell assembly of the anti-interference shielding membrane switch structure applied to the present invention;

[0020] Figure 4 FIG. shows a three-dimensional structural exploded schematic diagram of the panel layer, upper anti-interference shielding circuit layer, and key isolation layer substrate of the anti-interference shielding membrane switch structure applied to the present invention;

[0021] Figure 5 FIG. shows a three-dimensional structural exploded schematic diagram of the contact layer, lower key conductive ink layer, and lower conductive substrate of the anti-interference shielding membrane switch structure applied to the present invention.

[0022] DESCRIPTION OF THE REFERENCE NUMERALS: 1 - outer soft shell, 2 - panel layer, 3 - upper anti-interference shielding circuit layer, 4 - key isolation layer substrate, 5 - contact layer, 6 - lower key conductive ink layer, 7 - lower conductive substrate, 8 - underlying soft film, 9 - through hole, 10 - top soft film, 11 - first groove, 12 - second groove, 13 - button body, 14 - function label, 15 - metal shrapnel, 16 - flexible circuit board, 17 - circuit connector. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present invention will be further described below with reference to the drawings and embodiments.

[0024] Please refer to Figures 1-5, the present utility model provides an embodiment: an anti-interference shielding membrane switch structure, which includes a contact layer 5, a lower-line button conductive ink layer 6, and a lower-line conductive substrate 7. It also includes a panel layer 2, an upper-line anti-interference shielding circuit layer 3, a button isolation layer substrate 4, and a soft shell assembly. The inner wall of the soft shell assembly is installed with the panel layer 2, the upper-line anti-interference shielding circuit layer 3, the button isolation layer substrate 4, the contact layer 5, the lower-line button conductive ink layer 6, and the lower-line conductive substrate 7. The lower end of the panel layer 2 is installed with the upper-line anti-interference shielding circuit layer 3, the lower end of the upper-line anti-interference shielding circuit layer 3 is installed with the button isolation layer substrate 4, the lower end of the button isolation layer substrate 4 is installed with the contact layer 5, the lower end of the contact layer 5 is installed with the lower-line button conductive ink layer 6, and the lower end of the lower-line button conductive ink layer 6 is installed with the lower-line conductive substrate 7. By adding the upper-line anti-interference shielding circuit layer 3 on the button isolation layer substrate 4, it can effectively avoid the static electricity generated by human contact with the instrument and the static electricity on the control board from interfering with the precision medical instrument, so as to improve the accuracy of the precision medical instrument during use.

[0025] Please refer to Figures 4-5 , in this embodiment, equally spaced button bodies 13 are installed at the center of the upper end of the panel layer 2, and a function label 14 is installed at the rear edge of the upper end of the panel layer 2. Through the function label 14, it is convenient for the user to operate according to the functions of the button bodies 13. Equally spaced metal shrapnel 15 are installed at the center of the upper end of the contact layer 5, and the upper end of the metal shrapnel 15 is attached to the lower end of the button body 13. Through the metal shrapnel 15, the electrical signal can be transmitted to the household appliance in cooperation with the button body 13. A circuit flexible board 16 is fixedly connected to the front end of the lower-line conductive substrate 7, and a circuit connector 17 is fixedly connected to the front end of the circuit flexible board 16. Through the cooperation of the circuit flexible board 16 and the circuit connector 17, it is convenient for the user to install the membrane switch on the household appliance.

[0026] Please refer to Figure 3, in this embodiment, the soft shell assembly includes an outer soft shell 1, a top soft film 10 and a bottom soft film 8. The top soft film 10 is fixedly connected to the upper end of the outer soft shell 1, and the bottom soft film 8 is installed at the lower end of the outer soft shell 1. The panel layer 2, the upper anti-interference shielding circuit layer 3, the button isolation layer substrate 4, the contact layer 5, the lower button conductive ink layer 6, and the lower conductive substrate 7 are all installed inside the outer soft shell 1. The outer soft shell 1 can carry and protect the bottom soft film 8, the panel layer 2, the upper anti-interference shielding circuit layer 3, the button isolation layer substrate 4, the contact layer 5, the lower button conductive ink layer 6, and the lower conductive substrate 7. The front end of the outer soft shell 1 of the housing assembly is provided with a through hole 9. The flexible circuit board 16 passes through the through hole 9 and is located on the front outer wall of the outer soft shell 1. The through hole 9 can limit and fix the flexible circuit board 16 to improve its service life. The upper and lower ends of the top soft film 10 are provided with equally spaced first grooves 11, and the rear edges of the upper and lower ends of the top soft film 10 are provided with second grooves 12. The first grooves 11 are adapted to the button body 13, and the second grooves 12 are adapted to the function label 14. The first grooves 11 and the second grooves 12 can assist in limiting the button body 13 and the function label 14 to improve their service life.

[0027] When working, first, install the circuit connector 17 on the control circuit of the household appliance, and install the outer soft shell 1 on the control panel;

[0028] Next, the user is assisted to press the button body 13 through the pattern description on the function label 14. The button body 13 presses the metal shrapnel 15. The metal shrapnel 15 transmits the electrical signal to the control circuit through the lower button conductive ink layer 6 and the lower conductive substrate 7, and the control circuit starts the household appliance to realize various functions;

[0029] When in use, by adding the upper anti-interference shielding circuit layer 3 on the button isolation layer substrate 4, it is possible to avoid the static electricity generated by the human body contacting the instrument from interfering with the precision medical instrument.

[0030] Through the above steps, by adding the upper anti-interference shielding circuit layer 3 on the button isolation layer substrate 4, it is possible to effectively avoid the static electricity generated by the human body contacting the instrument from interfering with the precision medical instrument, so as to improve the accuracy of the precision medical instrument during use, and solve the problem that when the membrane switch structure is used for a precision medical instrument, the monitoring precision of the instrument is easily affected by the human body contact and the static electricity on the control board.

[0031] The above describes the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. An anti-interference shielding membrane switch structure, comprising a contact layer (5), a bottom line key conductive ink layer (6) and a bottom line conductive substrate (7), characterized in that: The invention also comprises a panel layer (2), an upper line anti-interference shielding circuit layer (3), a key isolation layer substrate (4) and a soft shell component. The inner wall of the soft shell component is provided with the panel layer (2), the upper line anti-interference shielding circuit layer (3), the key isolation layer substrate (4), the contact layer (5), the lower line key conductive ink layer (6) and the lower line conductive substrate (7). The lower end of the panel layer (2) is provided with the upper line anti-interference shielding circuit layer (3), the lower end of the upper line anti-interference shielding circuit layer (3) is provided with the key isolation layer substrate (4), the lower end of the key isolation layer substrate (4) is provided with the contact layer (5), the lower end of the contact layer (5) is provided with the lower line key conductive ink layer (6), and the lower end of the lower line key conductive ink layer (6) is provided with the lower line conductive substrate (7).

2. The anti-interference shielding membrane switch structure according to claim 1, characterized in that: The upper center of the panel layer (2) is equipped with button bodies (13) that are equidistantly distributed, and the rear edge of the upper end of the panel layer (2) is equipped with a function label (14).

3. The anti-interference shielding membrane switch structure according to claim 2, characterized in that: The center of the upper end of the contact layer (5) is provided with equidistantly distributed metal springs (15), and the upper end of the metal springs (15) is in contact with the lower end of the button body (13).

4. The anti-interference shielding membrane switch structure according to claim 3, characterized in that: A circuit soft board (16) is fixedly connected to the front end of the lower line conductive substrate (7), and a circuit connector (17) is fixedly connected to the front end of the circuit soft board (16).

5. The anti-interference shielding membrane switch structure according to claim 4, characterized in that: The soft shell component comprises an outer soft shell (1), a top soft film (10) and a bottom soft film (8); the top soft film (10) is fixedly connected to the upper end of the outer soft shell (1); the bottom soft film (8) is installed at the lower end of the outer soft shell (1); and the panel layer (2), the upper line anti-interference shielding circuit layer (3), the key isolation layer substrate (4), the contact layer (5), the lower line key conductive ink layer (6), and the lower line conductive substrate (7) are all installed in the outer soft shell (1).

6. The anti-interference shielding membrane switch structure according to claim 5, characterized in that: The housing assembly comprises an outer soft shell (1) having a through hole (9) extending through the front end thereof, and a circuit soft board (16) passing through the through hole (9) and being located on the front end outer wall of the outer soft shell (1).

7. The anti-interference shielding membrane switch structure according to claim 6, characterized in that: The upper and lower ends of the top soft film (10) are penetrated by first grooves (11) which are equidistantly distributed, and the upper and lower ends of the top soft film (10) are penetrated by second grooves (12) at the rear edges thereof. The first grooves (11) are adapted to fit the button body (13), and the second grooves (12) are adapted to fit the function label (14).

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