Induction membrane switch
By using a combination of colorless PET transparent material and silicone heat-insulating coating in membrane switches, the problems of decreased electrical performance and button wear in high-temperature environments have been solved, resulting in improved high and low temperature resistance and conductivity, and extended service life.
Patent Information
- Application Number
- CN202520118573.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-19
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-01-19
AI Technical Summary
Membrane switches are prone to overheating in high-temperature environments, which leads to a decline in electrical performance, button wear, reduced service life, and contact point detachment or short circuit.
The panel layer uses colorless and translucent PET material, combined with an insulation layer of silicone heat insulation coating, nickel-plated metal springs and silver paste/carbon paste circuits, plus a transparent protective cover and luminescent coating to enhance high and low temperature resistance and conductivity, and conducts heat through a copper heat insulation plate.
It improves the high and low temperature resistance and conductivity of membrane switches, extends their service life, prevents button wear and contact point detachment, and ensures normal operation.
Smart Images
Figure CN223911573U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to thin film switch technical field, concretely is a kind of inductive thin film switch. BACKGROUND
[0002] Thin film switch is the operation system of the integration of key function, indicating element, instrument panel. It is composed of four parts of panel, upper circuit, isolation layer, lower circuit. Press down thin film switch, the contact of upper circuit is deformed downward, and the plate of lower circuit is contacted and conducted, after finger release, upper circuit contact rebounds back, circuit is disconnected, loop triggers a signal. It is widely used in electronic communication, electronic measuring instrument, industrial control, medical equipment, automobile industry, intelligent toys, household appliances and other fields.
[0003] The key on thin film switch needs to be pressed frequently, the printing layer on the outside of key is rubbed by hand, and the printing layer on the key is worn out to cause user to distinguish the function of key, affect use, and if thin film switch is used in high-temperature environment such as factory, the electronic components inside thin film switch are easy to overheat, cause its electrical performance to sharply drop, key force is weakened, even lose normal function, in high-temperature state, the material of contactor expands, causes contact point to fall off, so that switch cannot normally connect or short circuit. SUMMARY
[0004] The utility model aims at providing a kind of inductive thin film switch to solve the problems raised in the above background.
[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of inductive thin film switch, including panel layer, further comprising:
[0006] Face rubber layer and heat insulation layer are arranged on the outside of panel layer, the outside of face rubber layer is provided with upper circuit, the outside of upper circuit is provided with interlayer, the outside of interlayer is provided with lower circuit, the outside of lower circuit is provided with back rubber layer and circuit board, the outside of panel layer is provided with transparent protective cover, the outside of transparent protective cover is fixedly installed with buckle, the inside of panel layer is provided with clamping groove.
[0007] Preferably, the panel layer is made of pet colorless transparent light surface material, and the heat insulation layer is organic silicon heat insulation paint.
[0008] Preferably, the upper circuit is made of metal nickel-plated spring material, and the lower circuit is made of silver paste and carbon paste material.
[0009] Preferably, the interlayer is made of PET double-sided adhesive material, and the back rubber layer is made of M back adhesive material.
[0010] Preferably, the transparent protective cover is printed with frosted ink and is provided with a luminous coating on the outside.
[0011] Preferably, the circuit board is mainly made of conductive silver paste material.
[0012] Preferably, the panel layer is provided with a heat insulation plate on the outside.
[0013] Compared with the prior art, the utility model has the advantages that:
[0014] The utility model discloses a transparent protective cover is used to provide protection for the key on the panel layer, and the panel layer can be replaced individually, the panel layer is made of pet colorless transparent light surface material, and the heat insulation layer is organic silicon heat insulation paint, the pet material has the characteristics such as high transparency, high ink adhesion, high elasticity and high toughness, the organic silicon heat insulation layer has the excellent performance of high temperature resistance and low temperature resistance, and has good waterproof, dustproof and weather resistance, enhances the high and low temperature resistance and waterproof performance of the panel layer, prolongs the service life of the membrane switch. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 A structure diagram of the utility model provides an inductive membrane switch;
[0016] Figure 2 A structure diagram of the utility model provides an inductive membrane switch;
[0017] Figure 3 A structure diagram of the utility model provides a panel layer;
[0018] Figure 4 A structure diagram of the utility model provides a panel layer;
[0019] Figure 5 The utility model provides an inductive membrane switch Figure 3 The utility model provides an inductive membrane switch
[0020] Fig. 1, panel layer;2, face glue layer;3, upper circuit;4, interlayer;5, lower circuit;6, face glue layer;7, circuit board;8, transparent protective cover;9, buckle;10, luminous coating;11, heat insulation plate;12, heat insulation layer;13, card slot. DETAILED DESCRIPTION
[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.
[0022] Please refer to Figures 1-5 As shown in the drawings, an induction film switch comprises a panel layer 1, further comprising:
[0023] A face adhesive layer 2 and a thermal insulation layer 12 are arranged outside the panel layer 1, the outside of the face adhesive layer 2 is provided with an upper circuit 3, the outside of the upper circuit 3 is provided with a laminated layer 4, the outside of the laminated layer 4 is provided with a lower circuit 5, the outside of the lower circuit 5 is provided with a back adhesive layer 6 and a circuit board 7, the outside of the panel layer 1 is provided with a transparent protective cover 8, the transparent protective cover 8 is fixedly installed with a buckle 9, the panel layer 1 is provided with a clamping groove 13, and the transparent protective cover 8 can be replaced by being buckled off from the clamping groove after being damaged.
[0024] The panel layer 1 is made of pet colorless and transparent light surface material, and the thermal insulation layer 12 is made of organic silicon thermal insulation paint; the pet material has the characteristics of high transparency, high ink adhesion, high elasticity and high toughness, the organic silicon thermal insulation layer 12 has the excellent performance of high temperature resistance and low temperature resistance, and has good waterproofness, dustproofness and weather resistance, thereby enhancing the high and low temperature resistance and waterproofness of the panel layer 1 and prolonging the service life of the film switch.
[0025] The upper circuit 3 is made of metal nickel-plated spring sheet material, and the lower circuit 5 is made of silver paste and carbon paste material; the metal nickel-plated spring sheet and the silver paste and carbon paste material used in the upper and lower circuits have small resistance and good conductivity, thereby improving the conductivity of the film switch.
[0026] The laminated layer 4 is made of PET double-sided adhesive material, and the back adhesive layer 6 is made of 3M back adhesive material; the face adhesive layer is used to tightly connect the panel layer and the circuit layer to achieve sealing effect, the laminated layer 4 is mainly used to separate and bond the upper and lower circuit layers and can prevent the spring sheet from moving, and the back adhesive layer 6 is used for assembling and bonding with instruments and equipment.
[0027] The transparent protective cover 8 is printed with frosted ink and is provided with a night light coating 10 on the outside; the night light coating 10 on the outside of the transparent protective cover 8 facilitates use at night or in poor light conditions.
[0028] The circuit board 7 is mainly made of conductive silver paste material; the conductive silver paste can reduce the resistance of the circuit board 7 and improve the conductivity.
[0029] The outside of the panel layer 1 is provided with a thermal insulation plate 11 made of copper material; copper has high thermal conductivity and can quickly absorb heat and rapidly conduct heat energy, thereby effectively dissipating heat from the heat source to the surrounding environment.
[0030] Working principle: the transparent protective cover 8 is used for providing protection for the keys on the panel layer 1, the panel layer 1 is made of pet colorless transparent smooth material, and the heat insulation layer 12 is made of organic silicon heat insulation paint; the pet material has the characteristics of high transparency, high ink adhesion, high elasticity and high toughness, the organic silicon heat insulation layer 12 has excellent high-temperature resistance and low-temperature resistance, and has good waterproofness, dustproofness and weather resistance, thereby enhancing the high-low temperature resistance and waterproofness of the panel layer 1 and prolonging the service life of the membrane switch; the upper circuit 3 is made of metal nickel-plated spring material, and the lower circuit 5 is made of silver paste and carbon paste material; the metal nickel-plated spring and the silver paste and carbon paste material used in the upper and lower circuits have small resistance and good conductivity, thereby improving the conductivity of the membrane switch; the adhesive layer 4 is made of PET double-sided adhesive material, and the back adhesive layer 6 is made of 3M back adhesive material; the function of the adhesive layer is to tightly connect the panel layer and the circuit layer, so as to achieve the sealing effect; the adhesive layer 4 is mainly used for separating and bonding the upper and lower circuit layers, and can prevent the spring from moving; the back adhesive layer 6 is used for assembling and bonding with the instrument equipment; the transparent protective cover 8 is printed with frosted ink and is provided with a night light coating 10 on the outer side; the night light coating 10 on the outer side of the transparent protective cover 8 is convenient for use at night or in poor light conditions; and the circuit board 7 is mainly made of conductive silver paste material, which can reduce the resistance of the circuit board 7 and improve the conductivity.
[0031] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more limitations, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.
[0032] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. An inductive membrane switch comprising a panel layer (1), characterized in that, Also include: The face rubber layer (2) and the heat insulation layer (12) are arranged outside the panel layer (1), the outer side of the face rubber layer (2) is provided with the upper circuit (3), the outer side of the upper circuit (3) is provided with the laminated glass (4), the outer side of the laminated glass (4) is provided with the lower circuit (5), the outer side of the lower circuit (5) is provided with the back rubber layer (6) and the circuit board (7), the outer side of the transparent protective cover (8) is fixedly installed with the buckle (9), and the inner side of the panel layer (1) is provided with the clamping groove (13).
2. An inductive membrane switch according to claim 1, characterized in that: The panel layer (1) is made of pet colorless and transparent light surface material, and the heat insulation layer (12) is organic silicon heat insulation paint.
3. An inductive membrane switch according to claim 1, wherein: The laminated glass (4) is made of PET double-sided adhesive material, and the back rubber layer (6) is made of 3M back adhesive material.
4. An inductive membrane switch according to claim 1, wherein: The transparent protective cover (8) is printed with frosted ink, and the outer side is provided with a night light coating (10).
5. An inductive membrane switch according to claim 1, wherein: The outer side of the panel layer (1) is provided with a heat insulation plate (11).