CN211404372U - Folding circuit film switch - Google Patents

Abstract

The utility model discloses a folding circuit membrane switch, including panel and circuit layer, the first surface on circuit layer is provided with the same circuit matrix respectively along its middle part left and right sides, one side on circuit layer outwards extends and is formed with and supplies two the lead wire piece that the transmission line of circuit matrix was drawn forth, the circuit layer is buckled relatively along the middle part on its first surface and is formed the relative upper and lower circuit piece that sets up to make the circuit matrix locate respectively on the upper and lower circuit piece and set up relatively, the second surface on circuit layer forms the surface of upper and lower circuit piece, the panel adhere in the surface of upper circuit piece. The utility model discloses folding circuit membrane switch is through being printed on the same circuit matrix respectively in order to form upper and lower circuit piece and the relative setting of circuit matrix through the circuit layer of buckling at the middle part both sides on the first surface on circuit layer, saves the time of circuit printing, improves production efficiency, practices thrift manufacturing cost.

Description

Folding circuit film switch

Technical Field

The utility model relates to a membrane switch technical field especially relates to a folding circuit membrane switch.

Background

The membrane switch's on the existing market button circuit piece adopts upper and lower circuit piece complex to form mostly, the lower surface of going up the circuit piece separately corresponds the printed wiring respectively with the upper surface of circuit piece down, long and with high costs of production time, simultaneously, this kind of membrane switch is by the tongue piece that upper and lower circuit piece respectively stretched out a confession signal output, these two tongue pieces still need insert on two needle file of circuit board through puncturing type conductive terminal respectively, lead to membrane switch's area great, the cost is higher.

Therefore, there is a need to provide a folding circuit membrane switch that can solve the above-mentioned drawbacks to improve the production efficiency of the membrane switch and save the production time and cost.

Disclosure of Invention

The utility model aims to solve the technical problem that a folding circuit membrane switch is provided in order to improve membrane switch's production efficiency, practices thrift production time and manufacturing cost.

In order to solve the technical problem, the utility model discloses a as follows technical scheme: the utility model provides a folding circuit membrane switch, including panel and circuit layer, the first surface on circuit layer is provided with the same circuit matrix respectively along its middle part left and right sides, one side on circuit layer outwards extends and is formed with one and supplies two the lead wire piece that the transmission line of circuit matrix was drawn, the circuit layer is buckled relatively along the middle part on its first surface and is formed the last circuit piece that sets up relatively and lower circuit piece to make the circuit matrix locate respectively on the circuit piece just sets up relatively, the second surface on circuit layer forms the surface of upper and lower circuit piece, the panel bond in the surface of going up the circuit piece.

The further technical scheme is as follows: an inter-piece glue layer is arranged between the upper circuit piece and the lower circuit piece to be mutually bonded.

The further technical scheme is as follows: the piece glue film between includes a plurality of piece face films between, piece face film between along the length direction evenly distributed of the circuit piece that goes up, and the interval setting of circuit matrix along the line.

The further technical scheme is as follows: the circuit matrix comprises a plurality of unit contacts, the unit contacts of the same circuit matrix are connected in rows or columns through silver paste circuit lines to form a transmission line, and lead terminals of the transmission line of the circuit matrix are arranged on the lead pieces.

The further technical scheme is as follows: one end of the lead sheet is electrically connected with a connector in a pressing mode.

The further technical scheme is as follows: the connector comprises a casing and metal terminals which are arranged in the casing and respectively correspond to each transmission line and are connected with each other.

The further technical scheme is as follows: and a surface adhesive layer for bonding the panel and the upper line sheet is arranged between the panel and the upper line sheet.

The further technical scheme is as follows: the outer surface of the lower circuit piece is provided with a back glue layer.

The further technical scheme is as follows: the back glue layer adopts double faced adhesive tape.

The further technical scheme is as follows: the panel is a transparent PET film.

The utility model has the advantages of: folding circuit membrane switch is through being printed on the same circuit matrix respectively in the middle part both sides on the first surface on circuit layer and setting up with circuit piece and the circuit matrix is relative through buckling the circuit layer and form upper and lower line, saves the time of circuit printing, improves production efficiency, practices thrift manufacturing cost, and simultaneously, the transmission line of circuit matrix draws forth on the lead sheet of circuit layer one side, need not upper and lower line piece and sets up the tongue piece that supplies signal output respectively, is favorable to reducing membrane switch's area.

Drawings

Fig. 1 is a schematic structural diagram of a folding circuit membrane switch of the present invention;

fig. 2 is a schematic diagram of a layered structure of the folded-line membrane switch of fig. 1;

fig. 3 is a schematic diagram of a circuit layer of the folded circuit membrane switch shown in fig. 1.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and examples.

Referring to fig. 1 to 3, in the present embodiment, the folded circuit membrane switch 10 is configured to be disposed on an electrical appliance to control an operation of the electrical appliance, and the folded circuit membrane switch 10 is electrically connected to a control circuit board of the electrical appliance. The electrical appliance comprises household appliances or medical equipment and other equipment needing on-off control.

The folded circuit membrane switch 10 includes a panel 110 and a circuit layer 120, wherein the same circuit matrixes 121 are respectively disposed on a first surface of the circuit layer 120 along left and right sides of a middle portion thereof, and a lead sheet 122 for leading out the transmission lines 1211 of the two circuit matrixes 121 is formed by extending one side of the circuit layer 120 outwards. The circuit layer 120 is bent along the middle of the first surface thereof to form an upper circuit sheet 1201 and a lower circuit sheet 1202 which are arranged oppositely, so that the circuit matrix 121 is respectively arranged on the upper circuit sheet 1201 and the lower circuit sheet 1202, the two circuit matrices 121 are arranged oppositely, the second surface of the circuit layer 120 forms the outer surfaces of the upper circuit sheet 1201 and the lower circuit sheet 1202, and the panel 110 is adhered to the outer surface of the upper circuit sheet 1201.

The upper portion of the bent circuit layer 120 is an upper circuit sheet 1201, the lower portion thereof is a lower circuit sheet 1202, and the panel 110 is disposed above the upper circuit sheet 1201. Preferably, in this embodiment, a surface adhesive layer 1101 for adhering the panel 110 and the upper circuit sheet 1201 is disposed between the panel 110 and the upper circuit sheet 1201, and the surface adhesive layer 1101 is made of a double-sided adhesive tape. The folded circuit membrane switch 10 is characterized in that the same circuit matrixes 121 are respectively printed on two sides of the middle of the first surface of the circuit layer 120, so that the upper circuit sheet 1201 and the lower circuit sheet 1202 are formed by bending the circuit layer 120, the circuit matrixes 121 are oppositely arranged, the circuit printing time is saved, the production efficiency is improved, the production cost is saved, meanwhile, the transmission line 1211 of the circuit matrix 121 is led out from the lead sheet 122 on one side of the circuit layer 120, and tongue pieces for signal output are not required to be respectively arranged on the upper circuit sheet and the lower circuit sheet, so that the area of the membrane switch is favorably reduced.

Preferably, in this embodiment, an interlayer adhesive layer 1203 is disposed between the upper circuit sheet 1201 and the lower circuit sheet 1202, so as to adhere the two circuit matrixes 121 to each other. Specifically, the interlayer adhesive layer 1203 includes a plurality of interlayer adhesive sheets 1204, and the interlayer adhesive sheets 1204 are uniformly distributed along the length direction of the upper line sheet 1201 and are arranged at intervals along the line matrix 121. The interval of the circuit matrix 121 represents a gap between units of the circuit matrix 121, the interlayer sheet film 1204 is in a long strip shape and is disposed between each column of the circuit matrix 121, and the interlayer sheet film 1204 is a double-sided adhesive tape.

Specifically, in this embodiment, the circuit matrix 121 includes a plurality of unit contacts 1212 distributed in rows and columns, the adjacent unit contacts 1212 are arranged at equal intervals, the unit contacts 1212 of the same circuit matrix 121 are connected in rows or columns by silver paste lines to form transmission lines 1211, and the lead ends of the transmission lines 1211 of the circuit matrix 121 are all arranged on the lead tabs 122. Preferably, the circuit matrix 121 is a 3 × 4 matrix, the cell contacts 1212 of the circuit matrix 121 of the upper circuit sheet 1201 are connected by silver paste circuit columns and form transmission lines 1211, the upper circuit sheet 1201 is formed with three transmission lines 1211, the cell contacts 1212 of the circuit matrix 121 of the lower circuit sheet 1202 are connected by silver paste circuit rows and form transmission lines 1211, the lower circuit sheet 1202 is formed with four transmission lines 1211, and the lead ends of the transmission lines 1211 are all arranged in parallel on the lead sheet 122. The unit contact 1212 is printed with conductive silver paste to be connected with the silver paste circuit. Of course, in other embodiments, the cell contacts 1212 of the wiring matrix 121 of the upper wiring tab 1201 are connected by silver paste wiring rows and form the transmission lines 1211, and the cell contacts 1212 of the wiring matrix 121 of the lower wiring tab 1202 are connected by silver paste wiring columns and form the transmission lines 1211.

The panel 110 is printed with key patterns corresponding to the circuit matrix 121, and by pressing the corresponding key patterns on the panel 110, the corresponding unit contacts 1212 of the circuit matrix 121 of the upper circuit sheet 1201 and the lower circuit sheet 1202 are contacted with each other to be conducted, and form a loop with the corresponding unit contacts 1212 connected by the silver paste circuit and the corresponding transmission lines 1211, so as to realize signal transmission. Specifically, in this embodiment, the panel 110 is a transparent PET film, and the key pattern is printed on the back surface of the panel 110.

Preferably, in some embodiments, one end of the lead tab 122 is electrically pressed with a connector 123, and the other end is connected to the circuit layer 120. The connector 123 is electrically connected with a control circuit board of the electrical appliance to transmit signals. Specifically, the connector 123 includes a sleeve 1231 and metal terminals 1232 disposed in the sleeve 1231 and respectively corresponding to each transmission line 1211 and connected to the transmission lines 1211, and the connector 123 is plugged into a port of a control circuit board of an electrical appliance through the metal terminals 1232 to electrically connect the connector 123 for transmitting signals. The end of the lead terminal of the transmission line 1211 is electrically pressed on the metal terminal 1232 of the connector 123 through the carbon paste line, so that the transmission line 1211 can be protected from being oxidized. The housing 1231 is made of plastic to insulate and protect the metal terminal 1232. The corresponding unit contacts 1212 of the circuit matrix 121 of the upper and lower circuit pads 1201, 1202 are in contact with each other to be conducted, and form a loop with the corresponding unit contacts 1212 and the corresponding transmission line 1211 connected through the silver paste circuit through the corresponding metal terminal 1232 and the control circuit board of the electrical appliance, so as to realize signal transmission and control the operation of the electrical appliance.

Specifically, in this embodiment, a back adhesive layer 130 is disposed on an outer surface of the lower circuit sheet 1202, the panel 110 is located on an upper surface of the foldable circuit switch 10, and the back adhesive layer 130 is located on a lower surface of the foldable circuit switch 10, and is used for adhering the foldable circuit switch 10 to a housing of an electrical appliance, so as to facilitate assembly of the film switch. The back adhesive layer 130 may be a double-sided adhesive tape.

To sum up, the utility model discloses folding circuit membrane switch is through being printed on the same circuit matrix respectively in order to form upper and lower circuit piece and the relative setting of circuit matrix through the circuit layer of buckling through the middle part both sides on the first surface on circuit layer, saves the time of circuit printing, improves production efficiency, practices thrift manufacturing cost, and simultaneously, the transmission line of circuit matrix draws out on the lead wire piece of circuit layer one side, need not upper and lower circuit piece and sets up the tongue piece that supplies signal output respectively, is favorable to reducing membrane switch's area.

The foregoing is considered as illustrative of the preferred embodiments of the invention and is not intended to limit the invention in any way. Various equivalent changes and modifications can be made on the basis of the above embodiments by those skilled in the art, and all equivalent changes and modifications within the scope of the claims should fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a folding circuit membrane switch, its characterized in that, folding circuit membrane switch is including panel and circuit layer, the first surface on circuit layer is provided with the same circuit matrix respectively along its middle part left and right sides, one side of circuit layer outwards extends and is formed with one and supplies two the lead wire piece that the transmission line of circuit matrix was drawn forth, the circuit layer is buckled relatively along the middle part on its first surface and is formed the last circuit piece and the lower circuit piece of relative setting to make the circuit matrix locate respectively just set up relatively on the circuit piece of going up and going down, the second surface on circuit layer forms the surface of circuit piece of going up and going down, the panel bond in the surface of last circuit piece.

2. The switch of claim 1, wherein an inter-sheet adhesive layer is provided between the upper and lower circuit sheets to adhere to each other.

3. The switch of claim 2, wherein the inter-sheet adhesive layer comprises a plurality of inter-sheet adhesive sheets, the inter-sheet adhesive sheets being uniformly distributed along the length of the upper circuit sheet and being spaced along the circuit matrix.

4. The switch of claim 1, wherein the circuit matrix comprises a plurality of unit contacts, the unit contacts of the same circuit matrix are connected in rows or columns by silver paste lines and form transmission lines, and the lead terminals of the transmission lines of the circuit matrix are all disposed on the lead tabs.

5. The switch of claim 4, wherein one end of said lead blade is conductively bonded with a connector.

6. The switch of claim 5, wherein the connector comprises a housing and metal terminals disposed in the housing and respectively corresponding to and connected to each of the transmission lines.

7. The switch of claim 1, wherein a cover adhesive layer is disposed between the panel and the top trace piece for adhering the panel and the top trace piece.

8. The switch of claim 1, wherein the outer surface of said lower wiring sheet is provided with a backing layer.

9. The switch of claim 8, wherein said adhesive backing layer is a double-sided adhesive.

10. The switch of claim 1, wherein said panel is a transparent PET film.

Images