Touch door panel and touch circuit

Abstract

The utility model discloses a kind of touch car door panel and touch circuit, touch car door panel includes touch panel, flexible PCB, shell, light guide column and circuit board, the flexible PCB is arranged in the touch panel, the circuit board is arranged in the shell, the circuit board is connected with the flexible PCB signal, and touch circuit is provided on the circuit board. Touch circuit includes power module, touch module, control chip, low-power module and CAN module, power module provides power supply for each module after filtering input power supply and outputs voltage;Touch module receives touch signal and is connected with control chip signal transmission data;Control chip operates and outputs signal and transmission data;Low-power module is connected with power module and touch module respectively, and low-power module receives the signal of the control chip and outputs voltage signal to touch module;CAN module connects control chip and vehicle data bus, and CAN data is transmitted for control chip.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a touch door panel and touch circuit. Background Technology

[0002] Currently, most vehicle panels use mechanical buttons, which are numerous and costly. With technological advancements, the widespread adoption of new energy vehicles, and the rapid development of intelligent vehicle systems, touch-sensitive panels are becoming increasingly common. These touch-sensitive panels typically use touch buttons or touchscreens, allowing for operation simply by touching the screen.

[0003] Currently, the four side doors of a vehicle are generally only equipped with decorative parts to enhance the vehicle's appearance, while the functional components are mechanical door switches.

[0004] The interior doors of current vehicles are only equipped with door switches, which is a limited function and lacks some features for intelligent use by users. Utility Model Content

[0005] The purpose of this utility model is to provide a touch door panel and a touch circuit. The touch door panel is installed on the inner sheet metal of the door, providing the vehicle with both aesthetic decoration and functional operation, enhancing the vehicle's premium feel and intelligence. At the same time, the touch circuit is connected to the vehicle's data bus, enabling the touch operation of the touch door panel to realize some application functions.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a touch circuit, comprising... A power module that filters the input power and outputs a voltage to provide power to each module. A touch module that receives touch signals and connects to the control chip to transmit data. A control chip that operates and outputs signals and transmits data; A low-power module is connected to both the power module and the touch module. The low-power module receives signals from the control chip and outputs voltage signals to the touch module. The CAN module connects the control chip and the vehicle data bus, and transmits CAN data to the control chip.

[0007] A further feature of this invention is that the power supply module includes capacitors C14 and C15, a transient voltage suppression diode TVS1, and a voltage regulator U1. The transient voltage suppression diode TVS1, capacitors C14 and C15 are connected in parallel in sequence, and the voltage regulator U1 converts the input voltage and outputs it to provide power to the touch module and the control chip.

[0008] A further feature of this invention is that the power supply module further includes a voltage monitoring module, which includes a diode D2, a transistor Q2, and a transistor Q3. The emitter of transistor Q2 is connected to diode D2, the collector of transistor Q2 is connected to resistor R5 and the control chip in sequence, the base of transistor Q2 is connected to resistor R6 and the collector of transistor Q3 in sequence, and the base of transistor Q3 is connected to the control chip.

[0009] A further feature of this invention is that the low-power module includes a transistor Q1, with the emitter of transistor Q1 as the input terminal, the collector of transistor Q1 as the output terminal, the base of transistor Q1 connected to a control chip, a resistor R2 connected between the emitter and base of transistor Q1, and a resistor R10 connected between the base of transistor Q1 and the control chip.

[0010] A further feature of this invention is that the touch module includes a touch chip U3 and its associated circuitry, wherein the touch chip U3 is a microcontroller of model CY8C4125LQS.

[0011] A further feature of this invention is that the control chip is a microcontroller with the model number Z20K118.

[0012] A touch-sensitive car door panel includes a touch panel, a flexible PCB, a housing, a light guide column, and a circuit board. The flexible PCB is disposed within the touch panel, and the circuit board is disposed within the housing. The circuit board is signal-connected to the flexible PCB, and the circuit board is provided with the aforementioned touch circuit.

[0013] A further feature of this invention is that the touch panel has at least one character, which is formed by spray painting and laser engraving process and by attaching a translucent textured film to the touch panel.

[0014] A further feature of this invention is that a light guide column corresponding to the character is embedded in the housing, and an LED light is provided below the light guide column.

[0015] A further feature of this invention is that a protective layer is provided on the back of the touch panel, and a cushioning foam is provided between the housing and the touch panel.

[0016] Compared with the prior art, the present invention has the following advantages: it provides a touch door panel and a touch circuit. The touch door panel is installed on the inner sheet metal of the door, providing the vehicle with both aesthetic decoration and functional operation, enhancing the vehicle's premium feel and intelligence. The touch circuit is connected to the vehicle's data bus to transmit data, enabling the transmission of some function instructions for touch operation of the touch door panel to the vehicle. Attached Figure Description

[0017] Figure 1This is a perspective view of the touch door panel in Embodiment 2.

[0018] Figure 2 This is a rear view of the touch door panel in Embodiment 2 and its AA-side cross-sectional view.

[0019] Figure 3 This is an exploded view of the touch door panel in Example 2.

[0020] Figure 4 This is an internal view of the housing in the touch door panel of Embodiment 2.

[0021] Figure 5 This is a flowchart of the touch circuit in Example 1.

[0022] Figure 6 This is the circuit schematic of the power module in Example 1.

[0023] Figure 7 This is the circuit diagram of the touch module in Example 1.

[0024] Figure 8 This is the circuit schematic of the control chip in Example 1.

[0025] Figure 9 This is the circuit schematic of the low-power module in Example 1.

[0026] Figure 10 This is the circuit schematic of the CAN module in Example 1.

[0027] In the diagram: 1. Touch panel; 2. Flexible PCB; 3. Cushioning foam; 4. Protective layer; 5. Light guide column; 6. Housing; 7. Circuit board; 8. Door sheet metal; 9. Characters; 100. Power supply module; 101. Voltage monitoring module; 200. Touch module; 300. Control chip; 400. Low power module; 500. CAN module. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. It should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0029] Example 1 This utility model discloses a touch door panel and its internal touch circuit, such as Figure 1 The touch panel is installed on the inner sheet metal of the door. Users can operate the functions by pressing or sliding the character 9 on the touch panel. In addition to the necessary door opening and closing functions, the door panel can also be set to perform various functions such as cup holder raising, clock, and volume adjustment. The touch circuit receives touch signals and transmits the signal data to the vehicle data bus to realize the corresponding functions.

[0030] like Figure 5-9 As shown, a touch circuit includes a power module 100, a low-power module 400, a touch module 200, a control chip 300, and a CAN module 500. The power module 100 filters the input vehicle power supply and outputs a voltage to power the other modules. The touch module 200 receives touch signals and transmits data with the control chip 300. The control chip 300 operates and outputs signals to control the conduction of several electronic components and transmit data with the vehicle data bus. The low-power module 400 receives signals from the control chip 300 and outputs signals to the touch module 200 to put the touch module 200 into sleep mode when idle to reduce power consumption. The CAN module 500 is used to transmit data between the control chip 300 and the vehicle data bus.

[0031] The power module 100 input terminal is connected to the vehicle's power supply, such as... Figure 6As shown, KL30 represents the positive power input to the vehicle. A transient voltage suppression diode (TVS1) and capacitors C14 and C15 are connected in parallel at the input terminal of the power module 100. Capacitors C14 and C15 filter the input power. The transient voltage suppression diode (TVS1) clamps the input voltage to a specific value while protecting the electronic components in the circuit from damage caused by transient overvoltage pulses. Specifically, in this embodiment, the transient voltage suppression diode (TVS1) is model SMBJ36CA, with a reverse cutoff voltage of 36V and a clamping voltage of 58V, limiting the maximum input voltage protection circuit. The output voltage sources of the power module 100 include VPWM_FL, VDDX_C, and VDDX. Voltage source VPWM_FL provides power to the LEDs inside the touch door panel, voltage source VDDX_C provides power to the touch module 200 and control chip 300, and voltage source VDDX provides power to the CAN module 500.

[0032] like Figure 6 The power module 100 also includes a voltage regulator U1, which is a low-power linear voltage regulator, model LTP3559. The input and output terminals of the voltage regulator U1 are connected in parallel with capacitors CE1, C22, C18 and C29, C28 respectively to ensure the stability of the input and output voltages. The voltage regulator U1 outputs voltage source VDDX_C and voltage source VDDX.

[0033] like Figure 6 The power supply module 100 includes a voltage monitoring module 101, which comprises a diode D2, a transistor Q2, a transistor Q3, and a Zener diode DZ1. Diode D2 is connected to capacitor C15 to ensure unidirectional current conduction. Transistor Q2 is a PNP transistor. The emitter of transistor Q2 is connected to diode D2. The collector of transistor Q2 is connected to resistor R5 and control chip 300 in sequence. The collector of transistor Q2 serves as the output terminal, outputting the voltage signal ADC_MCU to control chip 300. The base of transistor Q2 is connected to resistor R6 and the collector of transistor Q3 in sequence. The emitter of transistor Q3 is grounded, and the base of transistor Q3 is connected to control chip 300. During voltage monitoring, transistor Q3 receives the output signal PTC15 from control chip 300 and conducts, allowing current to flow through resistors R4 and R6, transistor Q3, and the ground point to form a path. The electromotive force creates a voltage drop in resistor R4, causing transistor Q2 to conduct and output the voltage signal ADC_MCU to control chip 300. Control chip 300 monitors the voltage of power module 100 and simultaneously limits the output voltage ADC_MCU. A Zener diode DZ1 is connected to the output terminal. The breakdown voltage of Zener diode DZ1 is 3V, controlling the voltage value output to control chip 300.

[0034] like Figure 7As shown, the touch module 200 includes a touch chip U3 and its auxiliary circuits. Specifically, in this embodiment, the touch chip U3 is a single-chip microcomputer of model CY8C4125LQS-S433. The touch chip U3 receives the signal generated by the user touching the character 9 on the door panel, such as the door opening and volume adjustment in this embodiment. At the same time, the touch chip U3 is connected to the control chip 300 and transmits data using pins such as SS1, SCK1, MISO1, and MISO1.

[0035] like Figure 8 As shown, in this embodiment, the control chip 300 is chip U2, which is a microcontroller with the model number Z20K118. The control chip 300 outputs signals to control the low-power module 400 and voltage monitoring module 101 to conduct, and at the same time outputs signals to control the LEDs in the touch panel 1 to conduct. The control chip 300 transmits data with the vehicle data bus through the pins CAN_TX and CAN_RX.

[0036] like Figure 9 As shown, the low-power module 400 includes a transistor Q1, specifically a PNP transistor. The emitter of transistor Q1 is the input terminal, receiving the input voltage VDDX_C, and the collector is the output terminal, receiving the output voltage VDDX_EN. The base of transistor Q1 is connected to the control chip 300. A resistor R2 is connected between the emitter and base of transistor Q1, and a resistor R10 is connected between the base of transistor Q1 and the control chip 300. The control chip 300 outputs a low-level signal, creating a potential difference between resistors R2 and R10. Current flows through resistors R2 and R10, and the potential loss through resistor R2 causes the emitter potential of transistor Q1 to become greater than the base potential, thus turning on transistor Q1 and outputting the voltage VDDX_EN. Capacitors C21 and C13 are also connected to the low-power module 400 to store energy and ensure circuit signal stability.

[0037] The voltage VDDX-EN output by the low-power module 400 is connected to pin 35 of the touch chip U3 in the touch module 200 to activate the touch chip U3. During operation, the control chip 300U2 outputs the signal VDDX_CRTL to turn on the transistor Q1 and output voltage to wake up the touch chip U3. During periods of no operation, the control chip 300U2 does not output the signal VDDX_CRTL, the transistor Q1 is turned off, and no voltage VDDX-EN is output. The touch chip U3 then enters a low-power sleep state, thus enabling the touch circuit to operate with low power and saving vehicle energy.

[0038] like Figure 10As shown, the CAN module 500 is connected to the vehicle data bus and the control chip 300 through CAN_L, CAN_H and CAN_RX, CAN_TX. The CAN module 500 includes a CAN transceiver chip U4, model TJA1044T. The CAN_L and CAN_H pins of the CAN transceiver chip U4 are connected to the common-mode filter L1, and the CAN_L and CAN_H lines are respectively connected to the protectors TVS2 and TVS3.

[0039] Example 2 The embodiment also discloses a touch door panel, which is installed on the vehicle door sheet metal 8 to provide both aesthetic and functional operation; such as Figure 1-3 As shown, the touch door panel includes a touch panel 1, a flexible PCB 2, a cushioning foam 3, a light guide column 5, a housing 6, and a circuit board 7.

[0040] The touch panel 1 is made using IML bonding technology. The panel body is injection molded from a light-transmitting material. The top of the panel is sprayed with paint and laser engraved. A light-transmitting textured film is added to the panel and glued on to achieve the display of character 9.

[0041] like Figure 1 The view shows the touch panel installed on the left rear door of the vehicle. The character 9 on the door panel represents cup holder, user-defined function, door open, clock, and volume control. Touching the character 9 controls the cup holder to rise or fall, user-defined function, door open, and volume control. Pressing or sliding the surface of the touch character 9 transmits the touch signal to the circuit board 7 to achieve the corresponding function.

[0042] like Figure 3 As shown, a flexible PCB2 is provided on the touch panel 1. When the user operates, the finger transmits force to the flexible PCB2 through the touch panel 1, causing the capacitance value on the flexible PCB2 to change. The flexible PCB2 will transmit the capacitance change value to the circuit board 7 through the flexible flat cable.

[0043] like Figure 2-3 As shown, a housing 6 is installed below the touch panel 1, and a circuit board 7 is fixed inside the housing 6 with screws. The circuit board 7 is equipped with a touch circuit. The touch module 200 in the touch circuit receives touch signals and transmits data signals to the control chip 300. The control chip 300 is connected to the vehicle data bus through the CAN module 500 and transmits data signals to the vehicle MCU to realize the corresponding functions.

[0044] like Figure 2 , Figure 4 As shown, several light guide pillars 5 are embedded above the housing 6, and LED lights (not shown) are provided below the light guide pillars 5. The light emitted by the LED lights shines from the light guide pillars 5 onto the character 9, illuminating the character 9.

[0045] like Figure 3 As shown, a protective layer 4 is provided on the back of the touch panel 1. The protective layer 4 is made of PC material and is bonded to the injection-molded shell of the touch panel 1. A cushioning foam 3 is provided between the shell 6 and the touch panel 1. The protective layer 4 and the cushioning foam 3 work together to give the door panel sealing and vibration resistance.

[0046] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A touch circuit, characterized by: include A power supply module (100) filters the input power and outputs a voltage to provide power to each module; A touch module (200) receives touch signals and is connected to the control chip (300) to transmit data; A control chip (300) that operates and outputs signals and transmits data; A low-power module (400) is connected to a power module (100) and a touch module (200) respectively. The low-power module (400) receives signals from the control chip (300) and outputs voltage signals to the touch module (200). A CAN module (500) is connected to the control chip (300) and the vehicle data bus to transmit CAN data to the control chip (300).

2. The touch circuit of claim 1, wherein: The power module (100) includes capacitors C14 and C15, transient voltage suppression diode TVS1 and voltage regulator U1. The transient voltage suppression diode TVS1, capacitors C14 and C15 are connected in parallel in sequence. The voltage regulator U1 converts the input voltage and outputs it to provide power to the touch module (200) and the control chip (300).

3. The touch circuit of claim 2, wherein: The power supply module (100) further includes a voltage monitoring module (101), which includes a diode D2, a transistor Q2 and a transistor Q3. The emitter of transistor Q2 is connected to diode D2, the collector of transistor Q2 is connected to resistor R5 and control chip (300) in sequence, the base of transistor Q2 is connected to resistor R6 and collector of transistor Q3 in sequence, and the base of transistor Q3 is connected to control chip (300).

4. The touch circuit of claim 1, wherein: The low-power module (400) includes a transistor Q1, with the emitter of transistor Q1 as the input terminal and the collector of transistor Q1 as the output terminal. The base of transistor Q1 is connected to the control chip (300), and a resistor R2 is connected between the emitter and base of transistor Q1. A resistor R10 is connected between the base of transistor Q1 and the control chip (300).

5. The touch circuit of claim 1, wherein: The touch module (200) includes a touch chip U3 and its associated circuitry. The touch chip U3 is a microcontroller of model CY8C4125LQS.

6. The touch circuit of claim 1, wherein: The control chip (300) is a microcontroller with the model number Z20K118.

7. A touch door panel, characterized by: The device includes a touch panel (1), a flexible PCB (2), a housing (6), a light guide post (5), and a circuit board (7). The flexible PCB (2) is disposed inside the touch panel (1), and the circuit board (7) is disposed inside the housing (6). The circuit board (7) is signal connected to the flexible PCB (2), and the circuit board (7) is provided with a touch circuit as described in any one of claims 1-6.

8. A touch panel for a vehicle door according to claim 7, wherein: The touch panel (1) has at least one character (9), which is formed by spray painting and laser engraving process and by attaching a light-transmitting textured film to the touch panel (1).

9. A touch panel for a vehicle door according to claim 8, wherein: The housing (6) is embedded with a light guide column (5) corresponding to the character (9), and an LED light is provided under the light guide column (5).

10. The touch door panel of claim 7, wherein: The back of the touch panel (1) is provided with a protective layer (4), and a buffer foam (3) is arranged between the shell (6) and the touch panel (1).

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