CN213752468U - Thin film switch connected by conductive adhesive - Google Patents
Thin film switch connected by conductive adhesive Download PDFInfo
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- CN213752468U CN213752468U CN202022865707.2U CN202022865707U CN213752468U CN 213752468 U CN213752468 U CN 213752468U CN 202022865707 U CN202022865707 U CN 202022865707U CN 213752468 U CN213752468 U CN 213752468U
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Abstract
The utility model provides an adopt membrane switch that conducting resin connects, includes the switch main part, the switch main part is including panel layer, first viscose layer, first circuit layer, second viscose layer, conducting layer, fifth viscose layer and the second circuit layer that from top to bottom sets gradually, the conducting layer connects electric structure and first circuit layer electricity through one and is connected, the second circuit layer is connected with the flexible line way board that is used for connecting external equipment, the conducting layer is connected with flexible line way board pressfitting through the conductive adhesive of anisotropy. The anisotropic conductive adhesive has conductivity in the longitudinal direction and has electrical insulation in the transverse direction, and the conductive layer is only transversely connected with the flexible circuit board and cannot be electrically connected with other circuits on the membrane switch in the transverse direction, so that the accuracy of the electrical connection of the conductive layer and the flexible circuit board is effectively ensured, the disorder of control signals input by the flexible circuit board to external equipment is avoided, the membrane switch is stably operated, and the normal use of the functions of the external equipment is ensured.
Description
Technical Field
The utility model relates to a membrane switch field, concretely relates to adopt membrane switch that conducting resin connects.
Background
The membrane switch is an operation system integrating the function of the function key, an indicating element and an instrument panel, and is widely applied to the fields of electronic communication and electronic measurement instruments, industrial control, medical working equipment, automobile industry, intelligent toys, household appliances and the like. The existing membrane switch is generally connected with an external device by using a flexible circuit board as a lead wire, the lead wire is connected with a circuit in the membrane switch through an input circuit arranged on the lead wire, and partial circuits of the membrane switch are required to be electrically connected with the input circuit in the lead wire in a longitudinal connection mode due to the fact that each circuit layer in the membrane switch is clear. However, since the circuits are generally densely arranged, when the input circuit in the lead is electrically connected to the input circuit in the vertical Z-direction, the input circuit is easily electrically connected to other circuits on the membrane switch in the horizontal X & Y directions, which causes confusion of the control signal input from the lead to the external device and causes malfunction of the external device.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides an adopt membrane switch that conducting resin connects.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides an adopt membrane switch of conducting resin connection, includes the switch main part, its characterized in that: the switch main part is including panel layer, first viscose layer, first circuit layer, second viscose layer, conducting layer, fifth viscose layer and the second circuit layer that from top to bottom sets gradually, the conducting layer connects electric structure and first circuit layer electricity through one and is connected, the second circuit layer is connected with the flexible line way board that is used for connecting external equipment, the conducting layer is connected with the flexible line way board pressfitting through anisotropic conducting resin.
The utility model discloses in, connect the electric structure including the magnetic layer who locates second viscose layer bottom, inhale the key piece by magnetism that connects in the magnetic layer bottom, the conducting layer is located the magnetic layer and is inhaled between the key piece by magnetism, inhale the key piece by magnetism and be connected conducting layer and first circuit layer normal close under the magnetic adsorption of magnetic layer.
The utility model discloses in, the switch main part is still including setting gradually leaded light layer and third viscose layer between first viscose layer and first circuit layer from top to bottom, be equipped with the first LED lamp to light guide layer input light source on the first circuit layer.
The utility model discloses in, the switch main part is still including setting gradually antistatic backing and fourth viscose layer between third viscose layer and first circuit layer from top to bottom.
The utility model discloses in, first circuit layer is equipped with the first wire that is used for connecting external equipment, the antistatic backing is equipped with the second wire that is used for connecting external equipment, first wire and second wire are connected with the first connector that is used for being connected with external equipment jointly.
The utility model discloses in, the switch main part is still including setting gradually sixth viscose layer and aluminum plate in second circuit layer below from top to bottom.
In the present invention, the second circuit layer is a PCB.
The utility model discloses in, the flexible line way board is connected with the second connector that is used for connecting external equipment.
The utility model discloses in, anisotropic conducting resin one end and flexible line way board afterbody are connected with the second connector jointly
In the present invention, the anisotropic conductive adhesive is an ACA anisotropic conductive adhesive.
The utility model has the advantages that: the utility model discloses in, the conducting layer is connected with the flexible line way board through the anisotropic conducting resin, so vertically have electric conductivity at the anisotropic conducting resin, and transversely but have under the effect of electrical insulation nature, transverse connection is only done with the flexible line way board to the conducting layer, can not produce the electricity with other circuits on the membrane switch in transverse direction and be connected, thereby effectively guarantee the accuracy that conducting layer and flexible line way board electricity are connected, avoid the flexible line way board to appear the confusion to the control signal of external equipment input, make the stable work of membrane switch, guarantee the normal use of external equipment function.
Drawings
The invention will be further explained with reference to the drawings and the embodiments below:
fig. 1 is a schematic exploded 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, a membrane switch who adopts conducting resin to connect, including the switch main part, the switch main part is including panel layer 1, first viscose layer 10, first circuit layer 2, second viscose layer 20, conducting layer 5, fifth viscose layer 50 and the second circuit layer 8 that from top to bottom sets gradually, foretell conducting layer 5 shows the partial circuit that needs to be connected through vertical connected mode on the membrane switch, conducting layer 5 connects electric structure and first circuit layer 2 electricity through one and is connected, second circuit layer 8 is connected with flexible line way board 82 who is used for connecting external equipment, flexible line way board 82 is connected with second connector 200 that is used for connecting external equipment to make membrane switch pass through second connector 200 and be connected with external equipment.
Further, the conductive layer 5 is connected to the flexible circuit board 82 by pressing through the anisotropic conductive adhesive 51, so that the conductive layer 5 can be connected to a part of the circuit of the flexible circuit board 82 through the anisotropic conductive adhesive 51, and the electrical connection of the conductive layer 5 is completed. Of course, without being limited to the above structure, one end of the anisotropic conductive adhesive 51 and the tail portion of the flexible circuit board 82 may be commonly connected to a second connector 200, so that the second circuit layer 8 and the conductive layer 5 may be connected to an external device through the second connector 200.
Preferably, the second circuit layer 8 is a PCB, the second circuit layer 8 is connected with a flexible circuit board 82 for connecting external devices, the flexible circuit board 82 can be directly connected with the second circuit layer 8, and in this embodiment, the flexible circuit board 82 is connected with a wiring port of the second circuit layer 8 through a magnetic connector 300, so as to facilitate wiring of the second circuit layer 8.
Preferably, in this embodiment, the anisotropic conductive adhesive 51 is an ACA anisotropic conductive adhesive, which has electrical conductivity in a direction perpendicular to the application direction (Z direction), i.e., a longitudinal direction, but has electrical insulation in the application direction (X & Y directions), i.e., a transverse direction, so as to ensure the accuracy of electrical connection of the conductive layer 5 and enable the membrane switch to operate stably.
Preferably, connect the electric structure including locate the magnetic layer 3 of second viscose layer 20 bottom, magnetically connect the key piece 4 of being inhaled in the magnetism of the bottom of magnetic layer 3, conducting layer 5 is located magnetic layer 3 and magnetically inhales between the key piece 4, magnetically inhale the key piece 4 and connect conducting layer 5 and the normally closed of first circuit layer 2 under the magnetic adsorption of magnetic layer 3, specifically be under the effect of magnetic adsorption, magnetically inhale the key piece 4 simultaneously with conducting layer 5 and the movable contact of first circuit layer 2 and be connected to accomplish the electricity between conducting layer 5 and the first circuit layer 2 and be connected, realize the normally closed function. And the panel layer 1 is provided with a key 11 which is used for pressing and driving the magnetically attracted key sheet 4 to disconnect the normally closed connection between the conductive layer 5 and the first circuit layer 2 through external force.
Furthermore, a through hole penetrating from top to bottom is formed in the magnetic layer 3, and a protrusion 41 penetrating through the through hole under the magnetic action to conduct a circuit of the first circuit layer 2 is formed at the upper part of the magnetically attracted key sheet 4; the first circuit layer 2 may be directly contacted with the protrusion 41 through the power connection port of the circuit thereof, so as to conduct the circuit of the first circuit layer 2, and in this embodiment, the first circuit layer 2 is provided with the first contact 21 movably contacted and connected with the protrusion 41, so that the first circuit layer 2 is movably contacted and connected with the protrusion 41 of the magnetically attracted key sheet 4 through the first contact 21, so as to improve the power connection accuracy. When no external force presses the key 11, the magnetically attracted key sheet 4 is connected with the conductive layer 5 and the first circuit layer 2 under the magnetic attraction effect of the magnetic layer 3, so that the circuit of the first circuit layer 2 is in a normally closed state, and the membrane switch has a normally closed switch function and meets the functional use requirement of specific equipment.
Preferably, the second circuit layer 8 is provided with a second contact 81 which is used for contacting the bottom of the magnetically attracted key sheet 4 to enable the circuit of the second circuit layer 8 to be conducted and send out a control signal, when a user presses the key 11, the key 11 drives the magnetically attracted key sheet 4 to move downwards, the magnetically attracted key sheet 4 is separated from the conductive layer 5 to generate a first control signal, the magnetically attracted key sheet 4 continues to move downwards and is connected with the second contact 81 on the second circuit layer 8 to generate a second control signal, the two control signals correspond to a function action respectively, so that the user can send out two control signals with different functions by operating one key 11, and the double-opening function of the membrane switch is realized.
Preferably, the switch main part is still including setting gradually leaded light layer 6 and third viscose layer 30 between first viscose layer 10 and first circuit layer 2 from top to bottom, be equipped with the first LED lamp 22 to the 6 input light source in photosphere on the first circuit layer 2, the light source of first LED lamp 22 is conducted the dispersion by leaded light layer 6 to guarantee the light source display effect of first LED lamp 22. In addition, the light guide layer 6 is provided with a driving block 61 corresponding to the key 11, when the key 11 moves downwards, the driving block 61 is firstly abutted on the driving block 61, and then the driving block 61 abuts on and pushes the first circuit layer 2 to enable the magnetically attracted key sheet 4 to move downwards, so that the disconnection action of the magnetically attracted key sheet 4 and the conductive layer 5 is realized. Also the bottom of the driving block 61 may be provided with an insulating layer to avoid that the driving block 61 interferes with the first circuit layer 2.
Preferably, the switch main body further includes an antistatic layer 7 and a fourth adhesive layer 40, which are sequentially disposed from top to bottom between the third adhesive layer 30 and the first circuit layer 2. In addition, the first circuit layer 2 is provided with a first lead 23 for connecting an external device, the antistatic layer 7 is provided with a second lead 71 for connecting an external device, and the first lead 23 and the second lead 71 are commonly connected with a first connector 100 for connecting with an external device.
Preferably, the second circuit layer 8 is provided with a second LED lamp 83, the second LED lamp 83 is used for displaying the working information of the second circuit layer 8, and the panel layer 1 is provided with a transparent window 12 corresponding to the second LED lamp 83, so that the light source emitted by the second LED lamp 83 is displayed outside. In use, the light source from the second LED lamp 83 is in each layer between the second adhesive layer 20 and the first adhesive layer 10 to form a matte effect.
Preferably, the switch main part is still including setting gradually sixth viscose layer 60 and the aluminum plate 9 in the second circuit layer 8 below from top to bottom, and aluminum plate 9 bonds as an organic wholely through sixth viscose layer 60 and second circuit layer 8 to this intensity through aluminum plate 9 increase membrane switch guarantees membrane switch's life. In addition, the first adhesive layer 10, the second adhesive layer 20, the third adhesive layer 30, the fourth adhesive layer 40, the fifth adhesive layer 50, and the sixth adhesive layer 60 are all 3M double-sided adhesives, so that the respective layers can be bonded together.
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 (10)
1. The utility model provides an adopt membrane switch of conducting resin connection, includes the switch main part, its characterized in that: switch main part is including panel layer (1), first viscose layer (10), first circuit layer (2), second viscose layer (20), conducting layer (5), fifth viscose layer (50) and second circuit layer (8) that from top to bottom set gradually, conducting layer (5) connect electric structure and first circuit layer (2) electricity through one and be connected, second circuit layer (8) are connected with flexible line way board (82) that are used for connecting external equipment, conducting layer (5) are connected with flexible line way board (82) pressfitting through anisotropic conductive adhesive (51).
2. The membrane switch connected by the conductive adhesive according to claim 1, wherein: the power connection structure comprises a magnetic layer (3) arranged at the bottom of the second adhesive layer (20) and a magnetically attracted key sheet (4) connected to the bottom of the magnetic layer (3), the conductive layer (5) is located between the magnetic layer (3) and the magnetically attracted key sheet (4), and the magnetically attracted key sheet (4) connects the conductive layer (5) and the first circuit layer (2) in a normally closed manner under the magnetic adsorption of the magnetic layer (3).
3. The membrane switch connected by the conductive adhesive according to claim 1, wherein: switch main part is still including setting gradually leaded light layer (6) and third viscose layer (30) between first viscose layer (10) and first circuit layer (2) from top to bottom, be equipped with on first circuit layer (2) to the first LED lamp (22) of photosphere (6) input light source.
4. The membrane switch connected by the conductive adhesive according to claim 3, wherein: the switch main body further comprises an antistatic layer (7) and a fourth adhesive layer (40) which are sequentially arranged between the third adhesive layer (30) and the first circuit layer (2) from top to bottom.
5. The membrane switch connected by the conductive adhesive according to claim 4, wherein: the first circuit layer (2) is provided with a first lead (23) used for connecting external equipment, the anti-static layer (7) is provided with a second lead (71) used for connecting the external equipment, and the first lead (23) and the second lead (71) are connected with a first connector (100) used for being connected with the external equipment.
6. The membrane switch connected by the conductive adhesive according to claim 5, wherein: the switch main body further comprises a sixth adhesive layer (60) and an aluminum plate (9) which are sequentially arranged below the second circuit layer (8) from top to bottom.
7. The membrane switch connected by the conductive adhesive according to claim 1 or 6, wherein: the second circuit layer (8) is a PCB.
8. The membrane switch connected by the conductive adhesive according to claim 1, wherein: the flexible circuit board (82) is connected with a second connector (200) for connecting external equipment.
9. The membrane switch connected by the conductive adhesive according to claim 1, wherein: one end of the anisotropic conductive adhesive (51) and the tail part of the flexible circuit board (82) are connected with a second connector (200) together.
10. The membrane switch connected by the conductive adhesive according to claim 1, wherein: the anisotropic conductive adhesive (51) is ACA anisotropic conductive adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022865707.2U CN213752468U (en) | 2020-12-01 | 2020-12-01 | Thin film switch connected by conductive adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022865707.2U CN213752468U (en) | 2020-12-01 | 2020-12-01 | Thin film switch connected by conductive adhesive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213752468U true CN213752468U (en) | 2021-07-20 |
Family
ID=76832523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022865707.2U Active CN213752468U (en) | 2020-12-01 | 2020-12-01 | Thin film switch connected by conductive adhesive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213752468U (en) |
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2020
- 2020-12-01 CN CN202022865707.2U patent/CN213752468U/en active Active
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