Touch switch with shielding layer for vehicle-mounted refrigerator

Abstract

The application relates to a touch switch with a shielding layer for a vehicle-mounted refrigerator, which comprises a switch frame and a touch plate. The switch frame is provided with a touch area. An installation area is arranged on one side of the touch area. The touch plate is installed at the installation area of the switch frame. The touch plate comprises a shielding layer, a base material layer and a signal layer arranged in sequence. The installation area provides an installation position for the touch plate, ensures accurate assembly of the touch plate and the switch frame, and adopts a three-layer structure design of the shielding layer, the base material layer and the signal layer. The shielding layer effectively blocks external electromagnetic interference. The application has the effects of reducing the invasion of interference signals into the signal layer and improving the anti-interference ability and product reliability of the touch switch.

Description

Technical Field

[0001] This application relates to the field of touch switches, and more particularly to a touch switch for a vehicle refrigerator with a shielding layer. Background Technology

[0002] The touch switch of a car refrigerator is usually located on the door or on the control panel. You can turn it on, turn it off, and switch modes by simply touching the corresponding sensing area or icon with your finger.

[0003] Touch switches are typically multi-layered, including a protective cover layer, a touch sensor layer, and an underlying support structure. The touch sensor layer usually uses a self-capacitance sensor.

[0004] However, self-capacitive sensors are susceptible to electromagnetic interference, which can lead to false triggering. Traditional single-layer circuit designs cannot effectively shield external signal interference (such as mobile phone and WiFi signals), resulting in false triggering or response failure, which affects product reliability. Utility Model Content

[0005] To address the issue that self-capacitive sensors are susceptible to electromagnetic interference, leading to false triggering and affecting product reliability, this application provides a touch switch for a vehicle refrigerator with a shielding layer.

[0006] The touch switch for a vehicle refrigerator with a shielding layer provided in this application adopts the following technical solution: A touch switch for a vehicle refrigerator with a shielding layer includes a switch frame and a touch panel. The switch frame has a touch area and a mounting area on one side of the touch area. The touch panel is mounted in the mounting area of ​​the switch frame and includes a shielding layer, a substrate layer and a signal layer arranged sequentially.

[0007] By adopting the above technical solution, the installation area provides an installation position for the touch panel, ensuring precise assembly of the touch panel and the switch frame. The touch panel adopts a three-layer structure design of shielding layer, substrate layer and signal layer. The shielding layer effectively blocks external electromagnetic interference, reduces interference signals from entering the signal layer, and improves the anti-interference capability and product reliability of the touch switch.

[0008] Optionally, the switch frame is provided with a retaining plate at the mounting area, and the two sides of the touch panel along its length are fitted with the retaining plate. Limiting strips are provided at both ends of the mounting area along the length of the touch panel. The limiting strips and the retaining plate form a limiting groove, and the touch panel is snapped into the switch frame through the limiting groove.

[0009] By adopting the above technical solution, the two sides of the touchpad in the length direction are attached to the card plate, which restricts the displacement of the touchpad in the width direction; the two ends in the length direction are abutted by the limiting strip, which restricts the displacement of the touchpad in the length direction. This simplifies the assembly process, improves the assembly efficiency, and facilitates subsequent adhesive bonding.

[0010] Optionally, the limiting strip is provided with an elastic strip, which abuts against the two ends of the touch panel along its length.

[0011] By adopting the above technical solution, when the touch panel is assembled into the limiting groove, the elastic strip abuts against the two sides of the touch panel and generates slight elastic pressure, filling the assembly gap between the touch panel and the limiting strip, reducing the probability of the touch panel becoming loose or wobbly.

[0012] Optionally, the shielding layer has a bottom diffuser sheet on one side of the touch area facing the switch frame.

[0013] By adopting the above technical solution, the bottom diffuser sheet enables the shielding effect of the shielding layer to cover the entire touch area more evenly, reducing the problem of uneven shielding effect caused by local structural differences in the shielding layer.

[0014] Optionally, the signal layer is provided with a foam layer on one side away from the substrate layer.

[0015] By adopting the above technical solution, the foam layer provides physical protection for the signal layer, reducing direct contact between external dust and moisture and the signal layer. When vibration occurs, the foam layer absorbs the vibration energy, reducing the impact of vibration on the signal layer and ensuring the stability of the signal layer structure and the continuity of signal transmission.

[0016] Optionally, the touch panel is provided with a connecting strip for external electrical connection, the switch frame is provided with a folding plate at the limiting groove, one side of the folding plate is provided with an arc-shaped part, and the connecting strip abuts against one side of the arc-shaped part of the folding plate.

[0017] By adopting the above technical solution, the arc-shaped part of the folding plate abuts against the connecting strip. The arc-shaped structure can reduce the scratch damage to the connecting strip caused by the edge of the folding plate. At the same time, the abutment between the arc-shaped part and the connecting strip can play a certain positioning role for the connecting strip, ensuring the stable connection between the connecting strip and the external circuit.

[0018] Optionally, the switch frame is provided with limit plates on both sides of the folding plate, and the limit plates are provided with relatively distributed plugs, which press the connecting strip against the card plate.

[0019] By adopting the above technical solution, the relatively distributed plugs apply a clamping force from both sides of the connecting strip to fix the connecting strip to the card plate. The clamping effect of the plugs restricts the horizontal displacement of the connecting strip. At the same time, the connecting strip is clamped to the card plate, which can enhance the connection stability between the connecting strip and the touch panel.

[0020] Optionally, the plug includes a rod and a spring, a guide rod is provided on the limiting plate, the spring is sleeved on the guide rod, the rod is slidably installed on the limiting plate, and the rods on opposite sides abut against one side of the connecting strip.

[0021] By adopting the above technical solution, when the insert rod abuts against the connecting bar, the spring pushes the insert rod to press it tightly. When it is necessary to disassemble or maintain the connecting bar, it is only necessary to overcome the spring force to push the insert rod to release the connecting bar, which simplifies the maintenance operation and improves the convenience of maintenance.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The installation area provides a mounting position for the touch panel, ensuring precise assembly between the touch panel and the switch frame. The shielding layer of the touch panel effectively blocks external electromagnetic interference, reduces interference signals from entering the signal layer, and improves the anti-interference capability and product reliability of the touch switch. 2. The touch panel is snapped into the switch frame through a limiting groove, which restricts the displacement of the touch panel in the length and width directions, simplifies the assembly process, improves assembly efficiency, and facilitates subsequent adhesive bonding. 3. The elastic strip abuts against the sides of both ends of the touchpad and generates slight elastic pressure, filling the assembly gap between the touchpad and the limiting strip, reducing the probability of the touchpad becoming loose or wobbly. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of this application.

[0024] Figure 2 This is a three-layer structure diagram of the touchpad of this application.

[0025] Figure 3 This is a partial three-dimensional structural diagram of the limiting plate and plug-in of this application.

[0026] Those skilled in the art will understand that the elements in the accompanying drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the size and position of some elements in the drawings may be enlarged relative to other elements to aid in understanding the embodiments of the invention.

[0027] Reference numerals: 1. Switch frame; 11. Mounting area; 12. Clamping plate; 13. Limiting strip; 131. Elastic strip; 2. Touch panel; 21. Shielding layer; 22. Substrate layer; 23. Signal layer; 3. Connecting strip; 4. Folding plate; 41. Arc-shaped part; 5. Limiting plate; 6. Insert; 61. Insert rod; 62. Spring; 63. Guide rod. Detailed Implementation

[0028] The present application will be further described in detail below with reference to the accompanying drawings.

[0029] This application discloses a touch switch for a car refrigerator with a shielding layer 21, see embodiment 21. Figure 1 The device includes a switch frame 1 and a touch panel 2. The mounting area 11 on the switch frame 1 provides a mounting position for the touch panel 2, ensuring that the touch panel 2 and the switch frame 1 are precisely assembled. The touch panel 2 adopts a three-layer structure design of shielding layer 21, substrate layer 22 and signal layer 23, which effectively blocks external electromagnetic interference and improves the anti-interference ability and product reliability of the touch switch.

[0030] Reference Figure 1 The switch frame 1 includes a touch area and a mounting area 11. The touch area is the area where the user performs touch operations, while the mounting area 11 provides a specific location for the installation of the touch panel 2. The mounting area 11 can be integrally molded or processed later and is set on the switch frame 1. Its shape and size are adapted to the touch panel 2 to ensure that the touch panel 2 can be installed accurately.

[0031] Reference Figure 2 The touchpad 2 includes a shielding layer 21, a substrate layer 22, and a signal layer 23 arranged sequentially. The shielding layer 21 is located on the side of the touchpad 2 closest to the touch area of ​​the switch frame 1, and its main function is to block external electromagnetic interference. The substrate layer 22 provides support and isolation, separating the shielding layer 21 and the signal layer 23 while providing stable support for the signal layer 23. The substrate layer 22 can be made of a material with good insulating properties, such as polyimide film. The signal layer 23 is responsible for receiving and transmitting touch signals.

[0032] Reference Figure 1 and Figure 3A retaining plate 12 is provided at the touch area of ​​the switch frame 1, and the two sides of the touch panel 2 along its length are fitted with the retaining plate 12. The retaining plate 12 can be fixed to the switch frame 1 by integral molding or welding, and its shape and size match the sides of the touch panel 2. The function of the retaining plate 12 is to limit the displacement of the touch panel 2 in the width direction, ensuring the stability of the touch panel 2 in the width direction. Limiting strips 13 are provided at both ends of the touch area along the length direction of the touch panel 2. The limiting strips 13 and the retaining plate 12 form a limiting groove, and the touch panel 2 is snapped into the switch frame 1 through the limiting groove. The limiting strips 13 and the retaining plate 12 work together to form a stable limiting structure, which allows the touch panel 2 to be firmly installed on the switch frame 1, simplifying the assembly process, improving assembly efficiency, and facilitating subsequent adhesive bonding.

[0033] Reference Figure 1 An elastic strip 131 is provided on the limiting strip 13, and the elastic strip 131 abuts against the two ends of the touchpad 2 along its length. The elastic strip 131 can be made of elastic materials such as rubber or silicone. When the touchpad 2 is assembled into the limiting groove, the elastic strip 131 abuts against the two ends of the touchpad 2 and generates a slight elastic pressure, filling the assembly gap between the touchpad 2 and the limiting strip 13, reducing the probability of the touchpad 2 becoming loose or wobbly, thereby further improving the stability of the touchpad 2.

[0034] Reference Figure 1 The shielding layer 21 has a bottom diffuser sheet on the side facing the touch area of ​​the switch frame 1. The function of the bottom diffuser sheet is to make the shielding effect of the shielding layer 21 cover the entire corresponding area of ​​the touch area more evenly, reduce the problem of uneven shielding effect caused by local structural differences of the shielding layer 21, and thus improve the shielding effect of the shielding layer 21.

[0035] Reference Figure 1 A foam layer is provided on the side of the signal layer 23 facing away from the substrate layer 22. The foam layer can be made of materials with cushioning properties such as sponge or foam plastic. The foam layer provides physical protection for the signal layer 23, reducing direct contact between external dust and moisture and the signal layer 23. When vibration occurs, the foam layer absorbs vibration energy, reducing the impact of vibration on the signal layer 23 and ensuring the stability of the signal layer 23 structure and the continuity of signal transmission.

[0036] Reference Figure 3The touchpad 2 is equipped with a connecting strip 3 for connecting to an external electrical circuit. The connecting strip 3 can be made of a conductive metal strip, such as copper. A folding plate 4 is located at the limiting groove of the switch frame 1. One side of the folding plate 4 has an arc-shaped portion 41, and the connecting strip 3 abuts against one side of the arc-shaped portion 41. The folding plate 4 can be formed by integral molding or bending. The design of its arc-shaped portion 41 can reduce scratch damage to the connecting strip 3 caused by the edge of the folding plate 4. At the same time, the abutment between the arc-shaped portion 41 and the connecting strip 3 can play a certain positioning role for the connecting strip 3, ensuring a stable connection between the connecting strip 3 and the external circuit.

[0037] Reference Figure 3 The switch frame 1 has limit plates 5 on both sides of the folding plate 4. The limit plates 5 have oppositely distributed inserts 6, which press the connecting strip 3 against the clamping plate 12. The limit plates 5 can be fixed to the switch frame 1 by integral molding or welding, and their function is to provide installation positions for the inserts 6. The inserts 6 include a rod 61 and a spring 62. The limit plates 5 have guide rods 63, and the springs 62 are sleeved on the guide rods 63. The rods 61 are slidably installed on the limit plates 5, with the rods 61 on opposite sides abutting against one side of the connecting strip 3. The rods 61 can be made of metal, and their ends can be designed with a smooth shape to reduce damage to the connecting strip 3. The springs 62 provide elastic force. When the rods 61 abut against the connecting strip 3, the springs 62 push the rods 61 to press them firmly. When it is necessary to disassemble or maintain the connecting strip 3, simply push the rods 61 against the elastic force of the springs 62 to release the connecting strip 3, simplifying maintenance operations and improving repair convenience.

[0038] The implementation principle of this embodiment is as follows: The touch panel 2 adopts a three-layer structure design consisting of a shielding layer 21, a substrate layer 22, and a signal layer 23. The shielding layer 21 effectively blocks external electromagnetic interference and reduces the impact of interference signals on the signal layer 23, thereby improving the anti-interference capability of the touch switch. The retaining plate 12, the limiting strip 13, and the elastic strip 131 on the switch frame 1 work together to limit and fix the touch panel 2, ensuring the stability of the touch panel 2. The bottom diffuser sheet makes the shielding effect of the shielding layer 21 more uniform, and the foam layer protects the signal layer 23. The design of the arc-shaped part 41 of the folding plate 4 and the plug-in 6 ensures a stable connection between the connecting strip 3 and the external circuit, while improving the convenience of maintenance.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A touch switch for a vehicle-mounted refrigerator with a shielding layer, comprising a switch frame (1) and a touch panel (2), wherein the switch frame (1) is provided with a touch area, characterized in that: The switch frame (1) has an installation area (11) on one side of the touch area. The touch panel (2) is installed in the installation area (11) of the switch frame (1). The touch panel (2) includes a shielding layer (21), a substrate layer (22), and a signal layer (23) arranged in sequence.

2. The touch switch for a vehicle-mounted refrigerator with a shielding layer according to claim 1, characterized in that: The switch frame (1) is provided with a card plate (12) at the touch area. The two sides of the touch plate (2) along the length direction are attached to the card plate (12). The touch area is provided with limit strips (13) at both ends along the length direction of the touch plate (2). The limit strips (13) and the card plate (12) form a limit groove. The touch plate (2) is connected to the switch frame (1) through the limit groove.

3. A touch switch for a vehicle-mounted refrigerator with a shielding layer according to claim 2, characterized in that: The limiting strip (13) is provided with an elastic strip (131), which abuts against the two ends of the touch panel (2) in the length direction.

4. A touch switch for a vehicle-mounted refrigerator with a shielding layer according to claim 1, characterized in that: The shielding layer (21) has a bottom diffuser sheet located on one side of the touch area facing the switch frame (1).

5. A touch switch for a vehicle-mounted refrigerator with a shielding layer according to claim 1, characterized in that: The signal layer (23) has a foam layer on one side away from the substrate layer (22).

6. A touch switch for a vehicle-mounted refrigerator with a shielding layer according to claim 2, characterized in that: The touch panel (2) is provided with a connecting strip (3) for external electrical connection. The switch frame (1) is provided with a folding plate (4) at the limiting groove. One side of the folding plate (4) is provided with an arc-shaped part (41). The connecting strip (3) abuts against one side of the arc-shaped part (41) of the folding plate (4).

7. A touch switch for a vehicle-mounted refrigerator with a shielding layer according to claim 6, characterized in that: The switch frame (1) is provided with limit plates (5) on both sides of the folding plate (4). The limit plates (5) are provided with relatively distributed plugs (6), and the plugs (6) press the connecting strip (3) against the card plate (12).

8. A touch switch for a vehicle-mounted refrigerator with a shielding layer according to claim 7, characterized in that: The plug (6) includes a plug rod (61) and a spring (62). A guide rod (63) is provided on the limiting plate (5). The spring (62) is sleeved on the guide rod (63). The plug rod (61) is slidably installed on the limiting plate (5). The plug rods (61) on opposite sides abut against one side of the connecting strip (3).

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