A membrane switch with good sealing performance
By designing the sealing sleeve structure on the outside of the circuit layer, isolation layer and conductive layer in the film switch, the problem of poor sealing properties of the film switch adhesive sealing layer after drying is solved, and better sealing properties are achieved.
Patent Information
- Application Number
- CN202421486849.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The adhesive sealing layer of the film switch becomes poor after dry-solid shrinkage, resulting in poor sealing of the switch.
A thin film switch structure including an outer film, a conductive layer, an isolation layer and a circuit layer is designed. The circuit layer, an isolation layer and an electrically conductive layer are provided with a sealing sleeve on the outer side of the circuit layer, and the sealing sleeve is located in the middle of the adhesive layer to enhance sealing.
With this structure, the film switch can maintain good sealing properties when the adhesive layer is dry-solid and shrinks, avoiding the problem of poor sealing properties.
Smart Images
Figure CN222720271U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of membrane switches, in particular to a membrane switch with good sealing performance. Background Art
[0002] Membrane switch is a special switch with indicator light and buttons, which can be embedded in the panel. The panel of the membrane switch is covered with transparent film, plastic sheet or button to form a membrane structure, and the film or button has conductive or non-conductive contacts. The on and off of these contacts directly determines the connection or disconnection of the circuit, thus realizing the function of the switch. Membrane switch has the characteristics of small size, thin thickness, light weight, beautiful appearance, comfortable feel, long life, wear resistance, and water washability. Membrane switches are widely used in various instruments and equipment, household appliances, industrial control, office equipment, communication equipment, and automotive industry.
[0003] The membrane switch is sealed by adhesive on all sides. When the adhesive layer dries and shrinks, its sealing property will deteriorate. Therefore, a membrane switch with good sealing property is designed. Utility Model Content
[0004] The utility model aims to provide a membrane switch with good sealing performance, so as to solve the sealing problem of the membrane switch mentioned in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a membrane switch with good sealing performance, comprising an outer film, a conductive layer fixedly connected to the inner side of the outer film, an isolation layer fixedly connected to the side of the conductive layer away from the outer film, a fitted circuit layer is arranged on the side of the isolation layer away from the isolation layer, a sealing sleeve is tightly sleeved on the outer sides of the circuit layer, the isolation layer and the conductive layer, a non-adhesive paper layer is arranged on the side of the circuit layer away from the isolation layer, an adhesive layer is filled between the outer film and the non-adhesive paper layer, and the entire sealing sleeve is located in the middle of the adhesive layer.
[0006] Preferably, a plurality of elastic protrusions are arranged on the conductive layer, and a conductive coating layer is plated on the inner side of the elastic protrusions, buttons are arranged on the outer film correspondingly, and through holes are arranged on the isolation layer corresponding to the elastic protrusions.
[0007] Preferably, the circuit layer, the isolation layer and the conductive layer have the same length and width, the non-adhesive paper layer and the outer film have the same length and width, and both are larger than the circuit layer.
[0008] Preferably, the side of the circuit layer away from the isolation layer is also covered by the adhesive layer, and the conductive layer is a waterproof plastic layer.
[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0010] When the adhesive layer dries and shrinks, its sealing performance is poor. In the present invention, a sealing sleeve is provided. The circuit layer, the isolation layer and the outer side of the conductive layer are tightly covered with a sealing sleeve. The sealing sleeve is located in the middle of the adhesive layer. This structure can increase the sealing performance of the membrane switch. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 A cross-sectional view of the utility model as a whole;
[0012] Figure 2 This is a disassembly diagram of the utility model;
[0013] Figure 3 It is a top view of the utility model.
[0014] In the figure: 1. Outer film; 2. Conductive layer; 3. Isolation layer; 4. Through hole; 5. Circuit layer; 6. Sealing sleeve; 7. Non-adhesive paper layer; 8. Adhesive layer. DETAILED DESCRIPTION
[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0016] See also Figure 1-3 A membrane switch with good sealing performance comprises an outer film 1, a conductive layer 2 is fixedly connected to the inner side of the outer film 1, an isolation layer 3 is fixedly connected to the side of the conductive layer 2 away from the outer film 1, a fitting circuit layer 5 is arranged on the side of the isolation layer 3 away from the isolation layer 3, a sealing sleeve 6 is tightly sleeved on the outer side of the circuit layer 5, the isolation layer 3 and the conductive layer 2, a non-adhesive paper layer 7 is arranged on the side of the circuit layer 5 away from the isolation layer 3, an adhesive layer 8 is filled between the outer film 1 and the non-adhesive paper layer 7, and the sealing sleeve 6 is entirely located in the middle of the adhesive layer 8.
[0017] Furthermore, a plurality of elastic protrusions are arranged on the conductive layer 2, and a conductive coating layer is coated on the inner side of the elastic protrusions. A button is arranged correspondingly on the outer film 1, and a through hole 4 is arranged corresponding to the elastic protrusions on the isolation layer 3. When the button is pressed, the button squeezes the elastic protrusion, and the elastic protrusion and the circuit layer 5 contact each other. The components of the circuit layer 5 are interconnected and conductive, and transmit electrical signals.
[0018] The circuit layer 5 , the isolation layer 3 and the conductive layer 2 have the same length and width. The non-adhesive paper layer 7 and the outer film 1 have the same length and width, and both are larger than the circuit layer 5 .
[0019] The side of the circuit layer 5 away from the isolation layer 3 is also covered by the adhesive layer 8, and the conductive layer 2 is a waterproof plastic layer.
[0020] Working principle: The utility model is a membrane switch with good sealing performance. When in use, tear off the non-stick paper layer 7, stick the membrane switch, and connect the conductive belt of the membrane switch to the outside. The button squeezes the elastic protrusion, and the elastic protrusion and the circuit layer 5 contact each other. The components of the circuit layer 5 are interconnected and conductive, and transmit electrical signals.
[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A membrane switch with good sealing performance, comprising an outer membrane (1), characterized in that: The inner side of the outer film (1) is fixedly connected to a conductive layer (2); the side of the conductive layer (2) away from the outer film (1) is fixedly connected to an isolation layer (3); a fitted circuit layer (5) is arranged on the side of the isolation layer (3) away from the isolation layer (3); a sealing sleeve (6) is tightly sleeved on the outer sides of the circuit layer (5), the isolation layer (3) and the conductive layer (2); a non-adhesive paper layer (7) is arranged on the side of the circuit layer (5) away from the isolation layer (3); an adhesive layer (8) is filled between the outer film (1) and the non-adhesive paper layer (7); and the sealing sleeve (6) is entirely located in the middle of the adhesive layer (8).
2. A membrane switch with good sealing performance according to claim 1, characterized in that: A plurality of elastic protrusions are arranged on the conductive layer (2), and the inner sides of the elastic protrusions are plated with a conductive coating layer. Buttons are arranged correspondingly on the outer film (1), and through holes (4) are arranged correspondingly on the isolation layer (3).
3. A membrane switch with good sealing performance according to claim 1, characterized in that: The circuit layer (5), the isolation layer (3) and the conductive layer (2) have the same length and width, and the non-adhesive paper layer (7) and the outer film (1) have the same length and width, and both have greater length and width than the circuit layer (5).
4. The membrane switch with good sealing performance according to claim 1, characterized in that: The side of the circuit layer (5) away from the isolation layer (3) is also covered by the adhesive layer (8), and the conductive layer (2) is a waterproof plastic layer.