Touch Sensor structure for automobile air conditioner panel and control circuit of touch Sensor structure

Abstract

The utility model discloses a touch Sensor structure for an automobile air conditioner panel, which comprises a lens, silver paste wires are printed on the lens, and the touch Sensor structure further comprises an FFC (flexible flat cable) integrally pressed with the lens. The utility model further provides a control circuit of the touch Sensor structure. By adopting the innovative touch Sensor structure, an unprecedented ultra-thin structure is achieved, the overall attractiveness and the space utilization rate of the air conditioner panel are greatly improved, invasion of static electricity in a complex electromagnetic environment in a vehicle can be effectively resisted, it is ensured that the touch Sensor can still keep stable and accurate touch response under the extreme condition, and the service life of the touch Sensor is prolonged. And worry-free control experience is brought to a driver.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile electronics, and more particularly to a touch sensor structure for an automobile air-conditioning panel. Background Art

[0002] As the automotive industry continues to evolve, cockpit interfaces are undergoing a profound transformation from traditional to intelligent. Traditional automotive air conditioning panels mostly rely on mechanical buttons. While intuitive and convenient, these buttons fall short of meeting the high-end and futuristic demands of modern consumers for a fusion of aesthetics and technology in vehicle interiors.

[0003] In recent years, touchscreen technology has been widely adopted in automotive air conditioning control systems due to its intuitive operation and rich interactive possibilities. However, traditional touchscreen solutions often face challenges such as high thickness and insufficient light transmittance. This not only limits the pursuit of ultra-thin designs but also potentially affects the light transparency and visual aesthetics within the cockpit. Furthermore, touchscreens must exhibit excellent anti-static properties to ensure long-term stable operation in complex electromagnetic environments like automobiles, preventing malfunctions or performance degradation caused by electrostatic interference. Summary of the Invention

[0004] The utility model overcomes the shortcomings of the existing technology and provides a touch sensor structure for automobile air-conditioning panels. By adopting an innovative touch sensor structure, it not only achieves an unprecedented ultra-thin structure, greatly improving the overall aesthetics and space utilization of the air-conditioning panel, but also can effectively resist the intrusion of static electricity in the complex electromagnetic environment in the car, ensuring that the touch sensor can still maintain stable and accurate touch response under extreme conditions, bringing a worry-free control experience to the driver.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A touch sensor structure for an automobile air-conditioning panel includes a lens, silver paste wiring printed on the lens, and an FFC pressed into one with the lens.

[0007] Preferably, it also includes a plurality of touch buttons with white backlights and yellow indicator lights.

[0008] Preferably, a mounting hole for passing an air conditioner knob is formed on the lens.

[0009] Preferably, the overall thickness of the touch sensor is 1.5 mm.

[0010] The utility model also provides a control circuit of the above-mentioned touch sensor structure, which includes a BCM, a CAN electrically connected to the BCM, an MCU electrically connected to the CAN, a touch chip electrically connected to the MCU, and an FFC socket electrically connected to the touch chip. The MCU is used to control the white backlight of the touch button to turn off and light up the yellow indicator light of the touch button.

[0011] Preferably, each signal line of the FFC socket cable is electrically connected to a TVS tube.

[0012] Preferably, a resistor is connected in series between the FFC socket cable and the touch chip.

[0013] Beneficial effects of the utility model:

[0014] The innovative touch sensor structure of this utility model not only achieves an unprecedented ultra-thin structure, greatly improving the overall aesthetics and space utilization of the air-conditioning panel, but also effectively resists the intrusion of static electricity in the complex electromagnetic environment inside the car, ensuring that the touch sensor can still maintain stable and accurate touch response under extreme conditions, bringing a worry-free control experience to the driver. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The structure of the specific embodiment of the utility model is shown in FIG. Figure 1 ;

[0016] Figure 2 The structure of the specific embodiment of the utility model is shown in FIG. Figure 2 ;

[0017] Figure 3 It is a structural diagram of the control circuit of a specific embodiment of the utility model.

[0018] In the figure: 100, touch sensor; 1, lens; 2, silver paste routing; 3, FFC; 4, touch button; 5, mounting hole; 6, BCM; 7, CAN; 8, MCU; 9, touch chip; 10, FFC socket. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] like Figure 1-3As shown, a touch sensor structure for a car air-conditioning panel includes a lens 1 with silver paste traces 2 printed on the lens 1, and an FFC 3 pressed together with the lens 1; it also includes a plurality of touch buttons 4 with a white backlight and a yellow indicator light; a mounting hole 5 for passing the air-conditioning knob is formed on the lens 1; the overall thickness of the touch sensor 100 is 1.5 mm.

[0021] The utility model also provides a control circuit of the above-mentioned touch sensor 100 structure, which includes a BCM6, a CAN7 electrically connected to the BCM6, an MCU8 electrically connected to the CAN7, a touch chip 9 electrically connected to the MCU8, and an FFC socket 10 electrically connected to the touch chip 9. The MCU8 is used to control the white backlight of the touch button 4 to turn off and light up the yellow indicator light of the touch button 4; each signal line of the FFC socket 10 cable is electrically connected to the TVS tube; a resistor is connected in series between the FFC socket 10 cable and the touch chip 9.

[0022] By adopting the above-mentioned technical solution, the present invention proposes an innovative ultra-thin touch Sensor100 solution, which is specially designed for automotive air conditioning panels. The touch Sensor100 not only achieves an unprecedented ultra-thin structure, greatly improving the overall aesthetics and space utilization of the air conditioning panel, but also achieves high transmittance through advanced material science and optical design, allowing light to smoothly penetrate the screen, maintaining the brightness and openness of the vehicle interior environment, and bringing a more pleasant visual experience to the driver. In addition, this technology also pays special attention to the optimization of anti-static performance. By integrating an efficient insulation layer and adopting a special hardware design solution, it effectively resists the intrusion of static electricity in the complex electromagnetic environment of the vehicle, ensuring that the touch Sensor100 can still maintain a stable and precise touch response under extreme conditions, bringing a worry-free control experience to the driver.

[0023] Firstly, this innovative automotive air conditioning panel integrates 13 high-efficiency touch buttons4, covering comprehensive functions and providing easy operation. It utilizes special silver paste wiring2 and hardware design, achieving an anti-static capability of up to ±25kV, ensuring stable operation even in extreme environments.

[0024] Furthermore, the touch response is sensitive and stable, enhancing the driving experience. Furthermore, the PC plastic + FFC3 connection solution allows silver paste to be printed directly onto the lens, eliminating lamination costs and significantly reducing costs. The unique hardware design and antistatic materials effectively prevent strong ESD interference within the vehicle. This solution is not only aesthetically pleasing but also cost-effective, leading the way in intelligent upgrades for automotive interiors.

[0025] Secondly, the control logic of the present invention is: when a finger touches the air-conditioning panel sensor, the touch chip 9 detects the change in capacitance and sends a signal to MCU8. After receiving the signal, MCU8 switches the backlight and indicator light of the corresponding button, and sends the information to the vehicle BCM6 through the CAN7 bus, working in coordination with other controllers of the vehicle.

[0026] The anti-static solution is as follows: 1. Connect a TVS diode to each signal line of the FFC3 cable. 2. Add a series resistor between the FFC3 cable and the touch chip 9. 3. Increase the width and thickness of the silver paste trace 2.

[0027] Therefore, the core innovations of this utility model include:

[0028] 1. The overall thickness of Touch Sensor 100 is ultra-thin at 1.5mm.

[0029] 2. LENS and FFC3 are pressed together before leaving the factory, saving lamination process costs.

[0030] 3. Excellent anti-ESD performance, the sample functions normally when the electrostatic discharge is ±25KV.

[0031] In the control circuit of the present invention, the initial state of the touch key is that the white backlight is on. When a finger touches the touch key 4, the touch chip 9 detects the change in capacitance. The touch chip 9 then sends a signal to the MCU 8 via the IIC. The MCU 8 controls the white backlight to turn off and the yellow indicator light to turn on. The signal is then sent to the vehicle BCM 6 via the CAN bus 7.

[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A touch sensor structure for a car air conditioning panel, comprising a lens (1), characterized in that: The lens (1) is printed with silver paste traces (2) and also includes an FFC (3) pressed together with the lens (1).

2. A touch sensor structure for a car air conditioning panel according to claim 1, characterized in that: It also includes a plurality of touch buttons (4) with white backlights and yellow indicator lights.

3. The touch sensor structure for automobile air conditioning panel according to claim 2, characterized in that: A mounting hole (5) for passing an air conditioner knob is formed on the lens (1).

4. The touch sensor structure for automobile air conditioning panel according to claim 2, characterized in that: The overall thickness of the touch sensor (100) is 1.5 mm.

5. A control circuit for a touch sensor structure according to any one of the preceding claims, characterized in that: The control circuit comprises a BCM (6), a CAN (7) electrically connected to the BCM (6), an MCU (8) electrically connected to the CAN (7), a touch chip (9) electrically connected to the MCU (8), and an FFC socket (10) electrically connected to the touch chip (9). The MCU (8) is used to control the white backlight of the touch key (4) to turn off and to light the yellow indicator light of the touch key (4).

6. The control circuit of the touch sensor structure according to claim 5, characterized in that: Each signal line of the FFC socket (10) cable is electrically connected to a TVS tube.

7. The control circuit of the touch sensor structure according to claim 5, characterized in that: A resistor is connected in series between the FFC socket (10) wiring and the touch chip (9).

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