A high flatness membrane switch

Abstract

The utility model discloses a high flatness's membrane switch, including from top to bottom in proper order arrange's panel layer, face glue layer, upper line layer, isolation layer, lower line layer and bottom glue layer, one side of upper line layer is equipped with first row line block, one side of lower line layer is equipped with second row line block, and first row line block includes first wiring area and first protection area, and second row line block includes second wiring area and second protection area, and first protection area is equipped with first gap to one end of upper line layer, and second protection area is equipped with second gap to one end of lower line layer. When first row line block and second row line block are connected with the controller of external connection, and the force is conducted through two row lines, and at this time, because of the setting of first gap and second gap, the stress that transmits to this place is released to a great extent, makes the force that finally transmits to panel layer greatly reduces, thereby has reduced the concave or convex degree of panel layer, has improved the flatness of membrane switch surface.

Description

Technical Field

[0001] This utility model relates to a membrane switch, and more particularly to a membrane switch with high flatness. Background Technology

[0002] Conventional membrane switches employ a multi-layered thin-material assembly, typically six layers, with a double-layered ribbon cable extending from the back. After the membrane switch is mounted, the cable head connects to a connector on an external control board. Due to installation location and space constraints, the cable tail is essentially bent after insertion, subjected to a downward pull or upward force. These stresses are directly transmitted to the surface material of the membrane switch, causing noticeable concavity or convexity on its surface. Consequently, the surface of the ribbon cable tail of the membrane switch is often uneven, resulting in poor overall flatness of the switch. Utility Model Content

[0003] The purpose of this invention is to provide a high-flatness membrane switch that can solve at least one of the above problems.

[0004] According to one aspect of the present invention, a high-flatness membrane switch is provided, comprising a panel layer, a top adhesive layer, an upper wiring layer, an insulating layer, a lower wiring layer, and a bottom adhesive layer arranged sequentially from top to bottom. A first wiring block is provided on one side of the upper wiring layer, and a second wiring block is provided on one side of the lower wiring layer. Both the first and second wiring blocks are located below the panel layer. The first wiring block includes a first wiring area and a first protection area. The second wiring block includes a second wiring area and a second protection area. The first wiring area is located on one side of the second protection area, and the first protection area is located on one side of the second wiring area. A first notch is provided at the end of the first protection area near the upper wiring layer, and a second notch is provided at the end of the second protection area near the lower wiring layer.

[0005] The beneficial effects of this utility model are as follows: By providing a first notch and a second notch at corresponding positions on the first and second cable blocks respectively, when the first and second cable blocks are connected to an external controller, the force is transmitted through the two cables. At this time, due to the setting of the first and second notches, the stress transmitted to this location is greatly released, thereby greatly reducing the force ultimately transmitted to the panel layer, thus reducing the degree of concavity or convexity of the panel layer and improving the flatness of the membrane switch surface. At the same time, by setting the first and second notches, while improving the flatness of the membrane switch surface, the wires in the first and second wiring areas can also be protected.

[0006] In some implementations, the first gap extends from the first protection zone to the first wiring zone, and the second gap extends from the second protection zone to the second wiring zone. This increases the area where the first and second gaps are located without damaging the conductors within each wiring zone.

[0007] In some implementations, the widths of the first and second notches gradually increase along the opening direction. Therefore, the notches closer to each wiring area are narrower, providing appropriate protection for the wiring area.

[0008] In some implementations, a first bayonet is provided on the first protected area, and a second bayonet is provided on the second protected area, with the first bayonet and the second bayonet corresponding to each other. Thus, by inserting the first and second bayonet together, the vertical positions of the first and second cable blocks can be easily exchanged at the bayonet, allowing the first and second cable blocks to fit snugly together, facilitating connection to an external controller.

[0009] In some embodiments, both the first and second cable trays have opening slots on both sides, extending upwards from the bottom adhesive layer to the upper cable layer. These opening slots facilitate the routing of the first and second cable trays from the upper and lower cable layers, respectively.

[0010] In some embodiments, a high-flatness membrane switch further includes a reinforcing block located between two opening slots, fixed below the adhesive layer, and positioned between the adhesive layer and the first ribbon cable block. Thus, the reinforcing block increases the strength of the adhesive layer at the corresponding location, thereby ensuring the service life of the adhesive layer.

[0011] In some implementations, the two sides of the first cabling block are flush with the two sides of the second cabling block. This facilitates the protection of the corresponding wiring area by each protected area and also makes the cutting and processing of the first and second cabling blocks easier. Attached Figure Description

[0012] Figure 1 This is an exploded view of the structure of a high-flatness membrane switch according to this utility model.

[0013] Figure 2 This is a schematic diagram of the upper wire layer structure in a high-flatness membrane switch according to this utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the lower wire layer in a high-flatness membrane switch according to this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of a high-flatness membrane switch, showing the reinforcement block and the adhesive layer in cooperation from the bottom view. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings.

[0017] Reference Figures 1-4 A high-flatness membrane switch includes, from top to bottom, a panel layer 1, a top adhesive layer 2, an upper wiring layer 3, an insulating layer 4, a lower wiring layer 5, and a bottom adhesive layer 6. A first wiring block 7 is provided on one side of the upper wiring layer 3, and a second wiring block 8 is provided on one side of the lower wiring layer 5. Both the first wiring block 7 and the second wiring block 8 are located below the panel layer 1. The first wiring block 7 includes a first wiring area 71 and a first protection area 72. The second wiring block 8 includes a second wiring area 81 and a second protection area 82. The first wiring area 71 is located on one side of the second protection area 82, and the first protection area 72 is located on one side of the second wiring area 81. A first notch 721 is provided at the end of the first protection area 72 near the upper wiring layer 3, and a second notch 821 is provided at the end of the second protection area 82 near the lower wiring layer 5. The arrangement of the panel layer 1, the top adhesive layer 2, the upper wiring layer 3, the insulating layer 4, the lower wiring layer 5, and the bottom adhesive layer 6 is the same as that of existing membrane switches and will not be described further here.

[0018] In actual production, the first ribbon cable block 7 and the upper ribbon layer 3 are integrally formed. Corresponding circuits are printed on the upper ribbon layer 3 and the first wiring area 71, while the first protection zone 72 is blank and has no printed circuits. Similarly, the second ribbon cable block 8 and the lower ribbon layer 5 are integrally formed. Corresponding circuits are printed on the lower ribbon layer 5 and the second wiring area 81, while the second protection zone 82 is blank and has no printed circuits.

[0019] After the first ribbon cable block 7 and the second ribbon cable block 8 are led out from their respective cable layers, they are stacked together, and the first wiring area 71 and the second wiring area 81 are misaligned to prevent breakdown or short circuits in their circuits. Simultaneously, a second protection zone 82 is placed on one side of the first wiring area 71. This second protection zone 82 protects the circuitry on the first wiring area 71, preventing external damage to the circuitry when an external controller is connected. Similarly, the first protection zone 72 is placed on one side of the second wiring area 81, protecting the circuitry on the second wiring area 81 from scratches and damage when an external controller is connected.

[0020] By providing a first notch 721 at the end of the first protection zone 72 near the upper wire layer 3 and a second notch 821 at the end of the second protection zone 82 near the lower wire layer 5, when the ends of the first cable block 7 and the second cable block 8, which are away from each wire layer, are connected to the external control board connector, the first cable block 7 and the second cable block 8 will bend to a certain extent due to limitations in installation space and position. That is, the first cable block 7 and the second cable block 8 will be subjected to downward or upward forces. At this time, the downward or upward forces are transmitted through the first cable block 7 and the second cable block 8. When the forces are transmitted to the first notch 721 and the second notch 821, they are released through the first notch 721 and the second notch 821, which greatly reduces the force that is ultimately transmitted to the panel layer 1, thereby improving the unevenness of the panel layer 1 and improving the flatness of the membrane switch.

[0021] Meanwhile, by setting the first notch 721 and the second notch 821, the surface flatness of the membrane switch can be improved, while the protective function of the first protection zone 72 on the conductors of the second wiring zone 81 can be largely preserved, as well as the protective function of the second protection zone 82 on the conductors of the first wiring zone 71.

[0022] The first gap 721 extends from the first protection zone 72 to the first wiring zone 71, and the second gap 821 extends from the second protection zone 82 to the second wiring zone 81. This ensures that the gaps do not damage the circuitry within each wiring zone.

[0023] The widths of the first notch 721 and the second notch 821 gradually increase along the opening direction. Therefore, the width of each notch near the wiring area is narrower, significantly reducing the possibility of contact between the wiring area near the notch and external components, thus protecting the wiring area and largely preventing external structures from contacting it. Simultaneously, because the widths of the first notch 721 and the second notch 821 gradually increase along the opening direction, the force transmitted by the ribbon cable blocks can be released to a greater extent at each notch, increasing the flexibility of the ribbon cable blocks near the panel layer 1 and facilitating stress release.

[0024] A first locking slot 722 is provided on the first protected area 72, and a second locking slot 822 is provided on the second protected area 82. The first locking slot 722 and the second locking slot 822 are correspondingly arranged, wherein the first locking slot 722 and the second locking slot 822 are V-shaped openings with opposite openings. Since the first ribbon cable block 7 and the second ribbon cable block 8 are both thin sheets, by aligning the first locking slot 722 and the second locking slot 822, one side of the first locking slot 722 is located below one side of the second locking slot 822, and the other side of the first locking slot 722 is located above the other side of the second locking slot 822. This allows the first ribbon cable block 7 and the second ribbon cable block 8 to alternate in position. That is, through the cooperation of the first locking slot 722 and the second locking slot 822, the first ribbon cable block 7 and the second ribbon cable block 8 can be tightly attached together, thereby facilitating the connection of the first ribbon cable block 7 and the second ribbon cable block 8 to the external connector.

[0025] Both sides of the first wiring block 7 and the second wiring block 8 are provided with opening slots 9, which extend upward from the bottom adhesive layer 6 to the upper wiring layer 3. Therefore, the opening slots 9 facilitate the lead-out of the first wiring block 7 and the second wiring block 8, reducing the impact of the bending degree of the first wiring block 7 and the second wiring block 8 after insertion on the overall flatness of the membrane switch.

[0026] A high-flatness membrane switch also includes a reinforcing block 10, which is located between two opening slots 9 and fixed below the adhesive layer 2. The reinforcing block 10 is positioned between the adhesive layer 2 and the first wiring block 7. In actual processing, after the opening slots 9 are opened, the lead-out points of the first wiring block 7 and the second wiring block 8 separate from the adhesive layer 2, making the overall thickness of the adhesive layer 2 and the panel layer 1 at this location smaller than at other locations. Therefore, attaching and fixing the reinforcing block 10 at this location increases the thickness and strength, reduces the amount of deformation, and thus helps improve the flatness of the entire membrane switch.

[0027] The two sides of the first row of wire blocks 7 are flush with the two sides of the second row of wire blocks 8. This facilitates the cutting of the first row of wire blocks 7 and the second row of wire blocks 8 during processing, thus simplifying production.

[0028] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A membrane switch with high flatness, characterized in that, The structure includes, from top to bottom, a panel layer (1), a top adhesive layer (2), an upper wiring layer (3), an isolation layer (4), a lower wiring layer (5), and a bottom adhesive layer (6). A first wiring block (7) is provided on one side of the upper wiring layer (3), and a second wiring block (8) is provided on one side of the lower wiring layer (5). Both the first wiring block (7) and the second wiring block (8) are located below the panel layer (1). The first wiring block (7) includes a first wiring area (71) and a first protection area (72). The second wiring block (8) includes a second wiring area (81) and a second protection area (82). The first wiring area (71) is located on one side of the second protection area (82), and the first protection area (72) is located on one side of the second wiring area (81). The first protection area (72) has a first notch (721) at one end near the upper wiring layer (3), and the second protection area (82) has a second notch (821) at one end near the lower wiring layer (5).

2. The high-flatness membrane switch according to claim 1, characterized in that, The first gap (721) extends from the first protection zone (72) to the first wiring zone (71), and the second gap (821) extends from the second protection zone (82) to the second wiring zone (81).

3. A high-flatness membrane switch according to claim 2, characterized in that, The widths of the first notch (721) and the second notch (821) gradually increase along the opening direction.

4. A high-flatness membrane switch according to claim 3, characterized in that, The first protection zone (72) is provided with a first checkpoint (722), and the second protection zone (82) is provided with a second checkpoint (822). The first checkpoint (722) and the second checkpoint (822) are set up correspondingly.

5. A high-flatness membrane switch according to any one of claims 1 to 4, characterized in that, Both sides of the first cable block (7) and the second cable block (8) are provided with opening grooves (9), which extend upward from the bottom adhesive layer (6) to the upper cable layer (3).

6. A high-flatness membrane switch according to claim 5, characterized in that, It also includes a reinforcing block (10), which is located between two opening slots (9) and is fixed below the adhesive layer (2). The reinforcing block (10) is located between the adhesive layer (2) and the first ribbon cable block (7).

7. A high-flatness membrane switch according to claim 1, characterized in that, The two sides of the first cabling block (7) are flush with the two sides of the second cabling block (8).

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