Touch film switch with metal key

Abstract

The utility model specifically relates to a touch film switch of a metal button, which comprises an upper flexible layer and a flexible circuit board, the upper flexible layer is arranged on the upper surface of the flexible circuit board, the upper flexible layer is provided with an insulating glue recess, a metal patch is arranged in the insulating glue recess, the flexible circuit board is provided with a touch film induction area, and the touch film induction area corresponds to the metal patch. The beneficial effects of the utility model are that the metal patch is arranged in the concave position of the insulation paste, so that static electricity is effectively prevented from being directly input to the flexible circuit board, devices on the flexible circuit board are prevented from being damaged, and the overall beauty can be improved. In addition, one end of the electrostatic net extends to the extension belt, and the electrostatic net is connected with the connector, so that the overall structure is optimized.

Description

Technical Field

[0001] The utility model specifically relates to a touch membrane switch with a metal button. Background Art

[0002] A membrane switch is a device that uses multiple touch portions located on the inner surfaces of two opposing thin films to make the two corresponding touch portions contact each other after being squeezed by external force, so as to form a circuit conduction, thereby achieving the expected switch function to generate a signal. Multiple sets of membrane switches can be combined and connected through circuits to form a set of input devices. The membrane switch is generally provided with a lead-out terminal. The membrane switch is installed on the indicator graphic panel. The membrane switch also has a lead-out terminal. The surface of the lead-out terminal is connected to the back of the indicator graphic panel with double-sided tape.

[0003] For another example, the name of a utility model patent document disclosed in China is: A planar membrane switch, the application number is: CN202120627899.5, and the disclosed structure is: including a first isolation layer, a flexible circuit board and a panel, the first isolation layer, the flexible circuit board and the panel are connected in sequence, and the lead-out terminal is extended on one side of the flexible circuit board, wherein: the flexible circuit board is divided into an upper flexible board and a lower flexible board, the upper flexible board and the lower flexible board are superimposed, a first extension block is provided on the edge of the upper flexible board, and a second extension block is provided on the edge of the lower flexible board, the lower surface of the flexible circuit board is connected to the back of the panel through a second double-sided adhesive, the second double-sided adhesive is provided with an opening, the width of the opening is 3mm to 4mm, and a certain gap is left between the second extension block and the panel, and the distance of the gap is 1mm to 4mm. The buttons on a planar membrane switch generally use plastic buttons, and metal buttons are not used. Metal buttons are conductive. During use, the static electricity of the human body is easily transmitted to the flexible circuit board through the metal buttons, which is easy to damage the chip of the flexible circuit board. Summary of the invention

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a sleep monitoring membrane switch that can effectively prevent static electricity transmission.

[0005] According to the utility model, a touch membrane switch with a metal button includes an upper flexible layer and a flexible circuit board. The upper flexible layer is located on the upper surface of the flexible circuit board. The upper flexible layer is provided with an insulating glue recess. A metal patch is provided in the insulating glue recess. A touch membrane sensing area is provided on the flexible circuit board. The touch membrane sensing area corresponds to the metal patch.

[0006] Specifically, a limiting glue edge is provided at the edge of the insulating glue recess, and the limiting glue edge is placed at the edge of the metal patch.

[0007] Specifically, one end of the flexible circuit board is connected to an extension belt, the extension belt is connected to a connector, and an electrostatic net is provided on the upper surface of the flexible circuit board, one end of the electrostatic net extends to the extension belt and the electrostatic net is connected to the connector.

[0008] Specifically, the other end of the electrostatic net extends to the touch film sensing area side.

[0009] Specifically, a display window area is provided on the upper surface of the upper flexible layer, and a display screen is provided on the flexible circuit board, and the display screen corresponds to the display window area.

[0010] Specifically, the metal patch is in a square shape or a round shape.

[0011] The beneficial effects of the utility model are as follows: the structure has a metal patch in the insulating adhesive recess, which effectively isolates static electricity from being directly input to the flexible circuit board, prevents damage to the components on the flexible circuit board, and improves the overall aesthetics. In addition, one end of the static net extends to the extension belt and the static net is connected to the connector, which optimizes the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.

[0015] Figure 3 yes Figure 2 Schematic diagram of the local enlarged structure at A.

[0016] Figure 4 A schematic diagram of the structure of the utility model in use state.

[0017] The markings in the attached drawings are as follows:

[0018] Upper flexible layer 1, display window area 101, limiting rubber edge 102, insulating rubber recess 103, touch film sensing area 104, metal patch 2, flexible circuit board 3, electrostatic net 4, display screen 5, extension belt 6, connector 7. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] Reference below Figures 1 to 4 A touch membrane switch with a metal button according to an embodiment of the utility model is described, comprising an upper flexible layer 1 and a flexible circuit board 3, wherein the upper flexible layer 1 is located on the upper surface of the flexible circuit board 3, the upper flexible layer 1 is provided with an insulating glue recess 103, a metal patch 2 is provided in the insulating glue recess 103, a touch membrane sensing area is provided on the flexible circuit board 3, and the touch membrane sensing area corresponds to the metal patch 2.

[0021] The structure has a metal patch 2 in the insulating adhesive recess 103, which effectively isolates static electricity from being directly input to the flexible circuit board 3, prevents damage to the components on the flexible circuit board 3, and improves the overall aesthetics. The shape of the insulating adhesive recess 103 is compatible with the metal patch 2, so that the metal patch 2 is not easily separated from the insulating adhesive recess 103.

[0022] The edge of the insulating adhesive recess 103 of the present structure is provided with a limiting adhesive edge 102 , and the limiting adhesive edge 102 is placed at the edge of the metal patch 2 to further limit the position of the metal patch 2 .

[0023] One end of the flexible circuit board 3 described in the present structure is connected to an extension belt 6, and the extension belt 6 is connected to a connector 7. An electrostatic net 4 is also provided on the upper surface of the flexible circuit board 3. One end of the electrostatic net 4 extends to the extension belt 6 and the electrostatic net 4 is connected to the connector 7, which optimizes the overall structure and effectively solves the problem of needing to add an additional extension part of the electrostatic net 4 in the past, which complicates the overall structure and requires an additional connector to be added as a whole to be connected to the electrostatic net 4, greatly increasing the manufacturing cost.

[0024] The other end of the electrostatic net 4 of this structure extends to the side of the touch film sensing area 104. The electrostatic net 4 is used to receive the surrounding static electricity of the touch film sensing area 104 and output it through the electrostatic net 4.

[0025] The upper surface of the upper flexible layer 1 of the present structure is provided with a display window area 101, and the flexible circuit board 3 is provided with a display screen 5, which corresponds to the display window area 101. The display screen 5 displays the operation status and can be observed through the display window area 101. The display window area 101 is square in shape and is suitable for

[0026] The metal patch 2 of this structure is in a square or round shape.

[0027] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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 claims and their equivalents.

Claims

1. A touch membrane switch with a metal button, comprising an upper flexible layer (1) and a flexible circuit board (3), wherein the upper flexible layer (1) is located on the upper surface of the flexible circuit board (3), and is characterized in that : The upper flexible layer (1) is provided with an insulating adhesive recess (103), a metal patch (2) is provided in the insulating adhesive recess (103), a touch film sensing area (104) is provided on the flexible circuit board (3), and the touch film sensing area (104) corresponds to the metal patch (2).

2. A touch membrane switch with a metal button according to claim 1, characterized in that: The edge of the insulating adhesive recess (103) is provided with a limiting adhesive edge (102), and the limiting adhesive edge (102) is placed at the edge of the metal patch (2).

3. The touch membrane switch with a metal button according to claim 1, characterized in that: One end of the flexible circuit board (3) is connected to an extension belt (6), the extension belt (6) is connected to a connector (7), and an electrostatic net (4) is also provided on the upper surface of the flexible circuit board (3), one end of the electrostatic net (4) extends onto the extension belt (6) and the electrostatic net (4) is connected to the connector (7).

4. A touch membrane switch with a metal button according to claim 3, characterized in that: The other end of the electrostatic net (4) extends to the touch film sensing area (104) side.

5. The touch membrane switch with a metal button according to claim 1, characterized in that: The upper surface of the upper flexible layer (1) is provided with a display window area (101), and the flexible circuit board (3) is provided with a display screen (5), and the display screen (5) corresponds to the display window area (101).

6. The touch membrane switch with a metal button according to claim 1, characterized in that: The metal patch (2) is in a square shape or a round shape.

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