Touch type automobile switch integrated with type-c fast charging interface

Abstract

The application relates to the technical field of automobile electronic switches and discloses a touch type automobile switch integrated with a Type-C fast charging interface, which comprises a shell main body, a touch panel, a decorative ring, a rear cover main body and a PLC circuit board; a circuit board clamping groove is arranged in the middle of the shell main body, and the decorative ring is clamped with the shell main body through elastic clamping teeth; the surface of the touch panel is provided with touch icons and a Type-C positioning groove; the PLC circuit board is clamped in the circuit board clamping groove, Type-C fast charging interfaces and conductive films corresponding to the touch icons are symmetrically arranged on the front side of the PLC circuit board, and LED indicator lamps are integrated; a light guide block corresponding to the LED indicator lamps is integrally formed on the rear side of the decorative ring; the rear cover main body is fixed to the rear part of the decorative ring, and a heat dissipation base plate and an automobile special wiring port are integrated on the rear part of the rear cover main body. The automobile switch control and the Type-C fast charging function are organically integrated, and the problems of uneven light display and poor heat dissipation effect in the prior art are solved.

Description

Technical Field

[0001] This invention relates to the field of automotive electronic switch technology, and more particularly to a touch-sensitive automotive switch with an integrated Type-C fast charging interface. Background Technology

[0002] With the rapid development of automotive electronics technology and the increasing demands of consumers for in-car experience, traditional mechanical car switches have been gradually replaced by touch switches. Touch switches have advantages such as beautiful appearance, good operating feel, long service life, and easy integration of multiple functions, and are widely used in various automotive systems such as window control, air conditioning adjustment, and lighting control.

[0003] Existing automotive touch switches still have limitations: they only provide basic on / off control functions and cannot meet the charging needs of modern drivers and passengers for mobile devices. Drivers and passengers need to purchase and install an additional car charger, which not only occupies a valuable cigarette lighter socket but also leads to messy wiring inside the vehicle, affecting aesthetics and ease of use, while increasing electrical safety hazards. Furthermore, poor heat dissipation means that the heat generated by the internal circuit board cannot be dissipated in time, especially after integrating fast charging functionality, which significantly increases heat generation, potentially accelerating the aging of electronic components and even causing safety hazards. Therefore, this paper proposes developing a touch-sensitive automotive switch with an integrated Type-C fast charging interface. Summary of the Invention

[0004] In view of the above-mentioned problems, the purpose of this invention is to provide a touch-sensitive car switch with an integrated Type-C fast charging interface, so as to overcome the shortcomings of existing car touch switches, such as limited functionality and poor heat dissipation.

[0005] The present invention is achieved by the following technical solution: a touch-sensitive car switch with an integrated Type-C fast charging interface, comprising a housing body, a touch panel, a decorative ring, a rear cover body, and a PLC circuit board; The outer shell serves as the main support frame, supporting the installation of the decorative ring, the back cover, and the PLC circuit board. The decorative ring is detachably installed on the front side of the housing body for positioning and installing the touch panel; The touch panel is detachably mounted on the front side of the decorative ring; the touch panel has multiple touch icons, and two Type-C positioning slots are symmetrically opened on the front of the touch panel; The PLC circuit board is detachably installed inside the circuit board slot; the front two sides of the PLC circuit board are symmetrically provided with Type-C fast charging interfaces, and the Type-C fast charging interfaces are installed in the inner cavity of the Type-C positioning slot. The PLC circuit board has conductive films symmetrically arranged on the top and bottom of the front side, which match the touch icons, and the conductive films are installed between the touch panel and the decorative ring. The back cover body is detachably installed at the rear of the decorative ring, and the position of the back cover body corresponds to the position of the PLC circuit board.

[0006] As a further improvement to the above solution, the periphery of the outer shell body is provided with an annular groove for the decorative ring to be snapped in; the middle of the outer shell body is provided with a circuit board slot for the installation of the PLC circuit board; and positioning slots for positioning and installing the PLC circuit board are provided on both the upper and lower sides of the circuit board slot.

[0007] As a further improvement to the above solution, the decorative ring is provided with a plurality of elastic teeth evenly distributed on the rear side, and the decorative ring is installed in the annular groove at the front of the outer shell body by means of the elastic teeth; the inner side of the decorative ring is provided with an annular groove for the installation of the touch panel.

[0008] As a further improvement to the above solution, an annular sealing groove is provided on the rear side of the decorative ring, and a rubber sealing ring is interference-fitted into the inner cavity of the annular sealing groove, and the rubber sealing ring is tightly fitted to the front end face of the outer shell body.

[0009] As a further improvement to the above solution, the rear side of the touch panel is provided with an annular retaining plate that matches the annular slot on the decorative ring, and the touch panel is snapped into the annular slot cavity at the front of the decorative ring by the annular retaining plate.

[0010] As a further improvement to the above solution, the rear side of the PLC circuit board is provided with a positioning block that matches the positioning slot, and the PLC circuit board is installed inside the circuit board slot by the positioning block. The PLC circuit board integrates LED indicator lights that correspond one-to-one with the touch icons. The back side of the decorative ring is integrally formed with a light guide block that corresponds to the position of the LED indicator light on the PLC circuit board. The light guide block is used to evenly diffuse the light emitted by the LED indicator light.

[0011] As a further improvement to the above solution, the rear of the main body of the rear cover is integrally formed with a heat dissipation substrate to dissipate the heat generated by the PLC circuit board during operation; the rear center of the main body of the rear cover is fixed with a car-specific wiring port by bolts, and the wiring port is electrically connected to the corresponding interface on the PLC circuit board to realize CAN bus communication and 12V DC power supply connection between the PLC circuit board and the car control computer.

[0012] As a further improvement to the above solution, the conductive film includes a line silver paste layer, an optical adhesive layer, a light-diffusing film, and a 3M adhesive layer stacked sequentially. The optical adhesive layer is disposed above the circuit silver paste layer and is used to fix the circuit silver paste layer to the back of the touch panel below the touch icon; The light-diffusing film is bonded to the bottom of the circuit silver paste layer using a 3M adhesive layer; The silver paste layer of the circuit extends to the tail of an FPC flexible flat cable, which is electrically connected to the PLC circuit board via an FPC connector.

[0013] The beneficial effects of this invention are as follows: This invention organically integrates a Type-C fast charging interface with a touch-sensitive car switch, achieving both automotive electrical control and mobile device fast charging functions without increasing the overall size of the switch. It eliminates the need for an additional onboard charger, saving interior space and improving ease of use. The present invention integrates a heat dissipation substrate with heat dissipation fins at the rear of the back cover body, which can dissipate the heat generated by the PLC circuit board and Type-C fast charging interface during operation in a timely manner, prevent electronic components from aging faster due to overheating, extend the service life of the switch, and improve the safety of the fast charging function. This invention, by setting a light guide block on the back of the decorative ring and adding a light-diffusing film to the conductive film, can evenly diffuse the light emitted by the LED indicator, completely solving the problem of bright spots and dark areas caused by direct light shining on the panel of traditional touch switches, thus improving the visual effect and nighttime user experience. Attached Figure Description

[0014] Figure 1 This is a three-dimensional exploded view of the present invention from the frontal view. Figure 2 This is a three-dimensional exploded view of the present invention from the frontal view. Figure 3 This is a three-dimensional perspective view of the invention from the rear view direction; Figure 4 This is a three-dimensional exploded view of the conductive film of the present invention; Figure 5 This is a cross-sectional view of the invention from the side view direction; Figure 6 For the present invention Figure 5 Enlarged view of section A in the middle; Figure 7 For the present invention Figure 5 Enlarged view of section B in the middle.

[0015] Explanation of key symbols: 1. Outer shell; 11. Circuit board slot; 12. Positioning slot; 2. Touch panel; 21. Touch icon; 22. Type-C positioning slot; 3. Decorative ring; 31. Sealing groove; 4. Back cover body; 41. Heat dissipation substrate; 42. Wiring port; 5. PLC circuit board; 51. Type-C fast charging interface; 52. Conductive film; 521. Circuit silver paste layer; 522. Optical adhesive layer; 523. Diffusing film; 524. 3M adhesive; 6. Rubber sealing ring. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings.

[0017] Obviously, the described embodiments are only a part of the embodiments of this disclosure, not all of them. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0018] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0019] To keep the following description of the embodiments of this disclosure clear and concise, detailed descriptions of known functions and known components are omitted.

[0020] Please combine Figure 1-7 As shown, an embodiment of the present invention provides a touch-sensitive car switch with an integrated Type-C fast charging interface, comprising a housing body 1, a touch panel 2, a decorative ring 3, a rear cover body 4, and a PLC circuit board 5; The outer shell 1 is injection molded from flame-retardant ABS material, serving as the main support frame for the entire switch. A continuous annular groove is provided around the perimeter of the outer shell 1 for the snap-fit ​​installation of the decorative ring 3. A rectangular circuit board slot 11 is provided in the center of the outer shell 1 to accommodate and install the PLC circuit board 5. Two positioning slots 12 are symmetrically provided on the upper and lower side walls of the circuit board slot 11 for precise positioning and installation of the PLC circuit board 5. Multiple elastic mounting clips are symmetrically provided on the left and right outer side walls of the outer shell 1. These elastic mounting clips match the pre-drilled mounting holes on the car dashboard, enabling the switch to be quickly and securely installed on the car dashboard. The decorative ring 3 is made of electroplated ABS material with a chrome-plated surface, giving it a metallic luster and enhancing the overall aesthetics of the switch. Multiple elastic teeth are evenly arranged on the rear side of the decorative ring 3, allowing it to be securely attached to the annular groove at the front of the main body 1. The connection is firm yet easy to disassemble. Continuous annular grooves are provided on the inner side of the decorative ring 3 for mounting the touch panel 2. The touch panel 2 is made of 1.1mm thick tempered glass with AF anti-fingerprint and AG anti-glare treatment, offering advantages such as high light transmittance, good wear resistance, and excellent touch feel. A ring-shaped retaining plate is integrally formed on the rear side of the touch panel 2, matching the ring-shaped slot on the decorative ring 3. The touch panel 2 is secured to the inner cavity of the ring-shaped slot at the front of the decorative ring 3 via the ring-shaped retaining plate. Multiple touch icons 21 are silkscreened on the front side of the touch panel 2, used to control different functions of the vehicle (such as ventilation and air conditioning). Two Type-C positioning slots 22 are symmetrically formed on the left and right sides of the front of the touch panel 2 to accommodate Type-C fast charging ports 51. like Figure 5 and Figure 7 As shown, a continuous annular sealing groove 31 is provided on the rear side of the decorative ring 3, and a rubber sealing ring 6 is interference-fitted into the inner cavity of the annular sealing groove 31. The rubber sealing ring 6 is made of silicone rubber material, which has good elasticity and aging resistance. When the decorative ring 3 is snapped onto the outer shell body 1, the rubber sealing ring 6 is compressed between the decorative ring 3 and the front end face of the outer shell body 1, forming a reliable sealing structure, so that the switch as a whole meets the IP5K2 waterproof and dustproof rating requirements, effectively preventing solid foreign objects with a diameter greater than 1mm from entering, and also preventing vertical dripping water from entering the switch. like Figure 5 and Figure 6As shown, the PLC circuit board 5 is made of FR-4 double-sided copper-clad board. Two positioning blocks matching the positioning slot 12 are glued to the back of the PLC circuit board 5 using epoxy resin. The PLC circuit board 5 is secured inside the circuit board slot 11 by these two positioning blocks, achieving precise positioning and fixation. Two Type-C fast charging ports 51 are symmetrically soldered to the left and right sides of the front of the PLC circuit board 5. The Type-C fast charging ports 51 are installed in the inner cavity of the Type-C positioning slot 22. The front surface of the Type-C fast charging port 51 is flush with the front surface of the touch panel 2, ensuring both aesthetics and ease of plugging and unplugging. The Type-C fast charging port 51 supports the PD3.0 fast charging protocol, with a maximum output power of 80W, providing fast charging services for various mobile devices such as mobile phones, tablets, and laptops. Two conductive films 52 are symmetrically arranged on the front side of the PLC circuit board 5, corresponding to the positions of the touch icons 21, and the conductive films 52 are installed between the touch panel 2 and the decorative ring 3. The PLC circuit board 5 also integrates LED indicator lights corresponding to the two touch icons 21. The LED indicator lights adopt a surface mount design, and the light emission color can be customized according to customer needs (e.g., white, blue, red, etc.). Two light guide blocks corresponding to the positions of the LED indicator lights are integrally formed on the rear side of the decorative ring 3. The light guide blocks are made of semi-transparent frosted PC material, which can evenly diffuse the light emitted by the LED indicator lights, prevent the LED light from shining directly on the panel and causing bright spots and dark areas, and ensure that the backlight of the touch icons 21 is uniform and soft. like Figure 4 As shown, the conductive film 52 has a four-layer composite structure, consisting of a circuit silver paste layer 521, an optical adhesive layer 522, a light-diffusing film 523, and a 3M adhesive layer 524 from top to bottom. The optical adhesive layer 522 is a 0.05mm thick transparent double-sided optical adhesive, positioned above the circuit silver paste layer 521 to firmly fix the circuit silver paste layer 521 to the back of the touch panel 2 below the touch icon 21, ensuring the sensitivity of the touch signal. The light-diffusing film 523 is a 0.1mm thick PET light-diffusing film, bonded to the bottom of the circuit silver paste layer 521 via the 3M adhesive layer 524, to further homogenize the light from the LED indicator and improve the backlight effect. A 15mm long FPC flexible flat cable extends from the tail of the circuit silver paste layer 521, and the FPC flexible flat cable is electrically connected to the PLC circuit board 5 via an FPC connector to realize the transmission of touch signals. When the driver or passenger touches the touch icon 21, the capacitance value at the touch icon 21 will change. The conductive film 52 transmits the capacitance change signal to the PLC circuit board 5 through the FPC flexible cable. The touch control chip inside the PLC circuit board 5 determines the range of capacitance change. When the capacitance change exceeds the set threshold, it outputs the corresponding control signal to the car control computer to realize the corresponding switch function. like Figure 3 As shown, the rear cover body 4 is injection molded from flame-retardant ABS material and is fixed to the rear of the decorative ring 3 by multiple self-tapping screws, facilitating the replacement of the rear cover body 4. The position of the rear cover body 4 corresponds to the position of the PLC circuit board 5, forming a closed cavity to protect the internal PLC circuit board 5 from the influence of the external environment. A 0.5mm thick EPDM sealing gasket is provided between the mating surfaces of the rear cover body 4 and the decorative ring 3 to further improve the sealing performance of the switch. A heat dissipation substrate 41 is integrally formed at the rear of the rear cover body 4. The surface of the heat dissipation substrate 41 is evenly distributed with multiple heat dissipation fins with a height of 5mm, which can significantly increase the heat dissipation area and dissipate the heat generated by the PLC circuit board 5 and the Type-C fast charging interface 51 during operation, preventing the electronic components from aging faster due to overheating. A car-specific wiring port 42 is fixed to the middle of the rear side of the rear cover body 4 by two bolts. The wiring port 42 uses a 12-pin waterproof connector and is electrically connected to the corresponding interface on the PLC circuit board 5 to realize CAN bus communication and 12V DC power supply connection between the PLC circuit board 5 and the car control computer. In addition, the PLC circuit board 5 is equipped with a complete set of protection circuits, including overcurrent protection circuit, overvoltage protection circuit, overheat protection circuit and short circuit protection circuit. When abnormal conditions such as overcurrent, overvoltage, overheat or short circuit occur during charging, the protection circuit will immediately cut off the output, effectively protecting the safety of the Type-C fast charging interface 51 and the device being charged.

[0021] The switch of this invention has undergone rigorous environmental testing for automotive components, including high and low temperature cycling tests, damp heat tests, vibration tests, shock tests, and salt spray tests. Test results show that the switch can operate normally within a temperature range of -40℃ to 85℃, withstand 10G acceleration, vibration in the 10Hz-2000Hz frequency range, and 50G acceleration shock, with a salt spray test duration of ≥48 hours, fully meeting the stringent environmental adaptability requirements for automotive components.

[0022] The assembly process of this invention is as follows: a. Install the rubber sealing ring 6 into the annular sealing groove 31 on the rear side of the decorative ring 3; b. Adhere the conductive film 52 to the corresponding position on the front side of the decorative ring 3 through the 3M adhesive layer 524, and pass the FPC flexible cable of the conductive film 52 through the reserved hole on the decorative ring 3; c. Install the touch panel 2 into the annular slot at the front of the decorative ring 3 using the annular clip plate, so that the touch icon 21 is precisely aligned with the position of the conductive film 52. d. Solder the Type-C fast charging interface 51 and the FPC connector to the PLC circuit board 5, and connect the FPC flexible cable of the conductive film 52 to the FPC connector; e. Install the PLC circuit board 5 into the circuit board slot 11 in the middle of the housing body 1 using the positioning block; f. Install the decorative ring 3 into the annular groove at the front of the main body 1 of the outer shell by means of the elastic snap-fit ​​teeth, so that the Type-C fast charging interface 51 is inserted into the Type-C positioning groove 22 on the touch panel 2. g. Secure the back cover body 4 to the rear of the decorative ring 3 using self-tapping screws; h. Secure the wiring port 42 to the middle of the rear side of the back cover body 4 with bolts, and connect the wire of the wiring port 42 to the corresponding interface on the PLC circuit board 5 to complete the assembly of the entire switch.

[0023] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A touch-sensitive car switch with an integrated Type-C fast charging interface, comprising a housing body (1), a touch panel (2), a decorative ring (3), a back cover body (4), and a PLC circuit board (5), characterized in that: The outer shell body (1) serves as the main support frame and is used for the installation and support of the decorative ring (3), the back cover body (4), and the PLC circuit board (5); The decorative ring (3) is detachably installed on the front side of the outer shell body (1) for positioning and installation of the touch panel (2); The touch panel (2) is detachably mounted on the front side of the decorative ring (3); multiple touch icons (21) are provided on the touch panel (2), and two Type-C positioning slots (22) are symmetrically opened on the front of the touch panel (2). The PLC circuit board (5) is detachably installed inside the circuit board slot (11); the front two sides of the PLC circuit board (5) are symmetrically provided with Type-C fast charging interfaces (51), and the Type-C fast charging interfaces (51) are installed in the inner cavity of the Type-C positioning slot (22); The PLC circuit board (5) has conductive films (52) symmetrically arranged on the front side to match the touch icon (21), and the conductive films (52) are installed between the touch panel (2) and the decorative ring (3). The rear cover body (4) is detachably installed at the rear of the decorative ring (3), and the position of the rear cover body (4) corresponds to the position of the PLC circuit board (5).

2. The touch-sensitive car switch with an integrated Type-C fast charging interface as described in claim 1, characterized in that, The outer shell body (1) is provided with an annular groove for the decorative ring (3) to be snapped in; the middle of the outer shell body (1) is provided with a circuit board slot (11) for the installation of the PLC circuit board (5); the upper and lower sides of the circuit board slot (11) are provided with positioning slots (12) for the positioning and installation of the PLC circuit board (5).

3. The touch-sensitive car switch with an integrated Type-C fast charging interface as described in claim 2, characterized in that, The decorative ring (3) has multiple elastic teeth evenly arranged on its rear side, and the decorative ring (3) is installed in the annular groove at the front of the outer shell body (1) by the elastic teeth; the inner side of the decorative ring (3) is provided with an annular groove for the installation of the touch panel (2).

4. The touch-sensitive car switch with an integrated Type-C fast charging interface as described in claim 3, characterized in that, The decorative ring (3) is provided with an annular sealing groove (31) on the rear side. A rubber sealing ring (6) is installed in the inner cavity of the annular sealing groove (31) with an interference fit. The rubber sealing ring (6) is tightly fitted to the front end face of the outer shell body (1).

5. The touch-sensitive car switch with an integrated Type-C fast charging interface as described in claim 3, characterized in that, The touch panel (2) is provided with an annular card plate on the rear side that matches the annular card slot on the decorative ring (3), and the touch panel (2) is installed in the annular card slot cavity at the front of the decorative ring (3) by the annular card plate.

6. The touch-sensitive car switch with an integrated Type-C fast charging interface as described in claim 2, characterized in that, The rear side of the PLC circuit board (5) is provided with a positioning block that matches the positioning slot (12), and the PLC circuit board (5) is installed inside the circuit board slot (11) by the positioning block. The PLC circuit board (5) is integrated with LED indicator lights that correspond one-to-one with the touch icon (21). The back side of the decorative ring (3) is integrally formed with a light guide block that corresponds to the position of the LED indicator light on the PLC circuit board (5). The light guide block is used to evenly diffuse the light emitted by the LED indicator light.

7. The touch-sensitive car switch with an integrated Type-C fast charging interface as described in claim 1, characterized in that, The rear of the main body (4) is integrally formed with a heat dissipation substrate (41) to dissipate the heat generated by the PLC circuit board (5) during operation; the rear middle of the main body (4) is fixed with a car-specific wiring port (42) by bolts, and the wiring port (42) is electrically connected to the corresponding interface on the PLC circuit board (5) to realize CAN bus communication and 12V DC power supply connection between the PLC circuit board (5) and the car control computer.

8. The touch-sensitive car switch with an integrated Type-C fast charging interface as described in claim 1, characterized in that, The conductive film (52) includes a line silver paste layer (521), an optical adhesive layer (522), a light-diffusing film (523), and a 3M adhesive layer (524) stacked sequentially. The optical adhesive layer (522) is disposed above the line silver paste layer (521) and is used to fix the line silver paste layer (521) to the back of the touch panel (2) below the touch icon (21); The diffuser film (523) is bonded to the bottom of the line silver paste layer (521) by a 3M adhesive layer (524); The tail of the line silver paste layer (521) extends with an FPC flexible flat cable, and the FPC flexible flat cable is electrically connected to the PLC circuit board (5) through an FPC connector.

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