Automobile door handle switch with reliable wireless signal receiving function and packaging method thereof

Abstract

The invention relates to an automobile door handle switch with a reliable wireless signal receiving function and a packaging method thereof.The automobile door handle switch comprises a housing, a circuit board is fixedly connected to the interior of the housing, a wireless signal receiving chip is arranged on the circuit board, the open end of the housing is connected with a cover plate with the flat surface, and the cover plate completely covers the wireless signal receiving chip; the interior of the housing is filled with pouring sealant, and the space between the housing and the cover plate is fully filled with the pouring sealant. The surface flatness of the pouring sealant in the wireless signal receiving chip area is ensured by utilizing the flat surface of the cover plate, so that the influence of the potholes on the surface of the pouring sealant on wireless signal transmission is eliminated, and the wireless signal can be transmitted to the wireless signal receiving chip according to the set direction and frequency and is accurately received. The technical problem that the wireless signal receiving function is reduced after pouring sealant is poured into a novel automobile door handle switch is solved.

Description

Technical Field

[0001] This invention belongs to the field of signal switch technology, specifically relating to a reliable car door handle switch with wireless signal reception function and its packaging method. Background Technology

[0002] Due to the unique installation location, car door handle switches require extremely high sealing performance, necessitating complete potting and sealing of the circuit board to prevent rainwater intrusion and short circuits. Conventional car door handle switches primarily rely on mechanical switches, thus the surface smoothness of the potting layer is not critical. However, with the development of new energy vehicles and the rise of intelligent driving control, car door handles are beginning to incorporate signal receivers to assist mechanical switches, creating multi-functional unlocking mechanisms. However, after potting the switch's internal components, it was discovered that the signal receiver's signal reception capability decreased, and there were instances where wireless signals could not be received. Based on research and analysis of this technical problem, we have improved existing technology to address the issue of reduced wireless signal reception after potting in new car door handle switches. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a car door handle switch with reliable wireless signal reception function, and to solve the technical problem of decreased wireless signal reception function after potting and sealing of the new car door handle switch.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a car door handle switch with reliable wireless signal reception function, including a cover with an opening at the rear end and two button holes on the front end of the cover, each button being connected to a button. A circuit board is fixedly connected inside the cover, and a tactile switch corresponding to the two button holes is provided on the circuit board. A wireless signal receiving chip is provided on the circuit board between the two tactile switches, with the wireless signal receiving chip facing the opening end of the cover. A flat cover plate is connected to the opening end of the cover, and the cover plate completely covers the wireless signal receiving chip. The inside of the cover is filled with potting compound, which completely fills the space between the cover and the cover plate.

[0005] As a preferred embodiment, one end of the circuit board is connected to an outwardly extending signal line, and gaps are left between both ends of the cover plate and the side plates at both ends of the housing to form potting ports.

[0006] As a preferred embodiment, the cover is elongated and strip-shaped, with grooves adapted to the thickness of the cover plate provided on the two side walls of the open end of the cover. The two side edges of the cover plate are embedded in the two grooves, and the outer surface of the cover plate is flush with the rear end face of the cover. The filling thickness of the potting compound is sufficient to ensure that the potting compound and the surface of the cover plate facing the inside of the cover are completely adhered.

[0007] As a preferred option, foam is attached to the potting port at the end away from the signal line.

[0008] As a preferred embodiment, the button and the cover are integrally formed by secondary injection molding, and the button is elastic.

[0009] A further technical problem to be solved by the present invention is to provide a packaging method for manufacturing the above-mentioned automobile door handle switch, thereby solving the technical problem of decreased wireless signal reception function after potting and encapsulating the novel automobile door handle switch.

[0010] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: The packaging method for manufacturing the above-mentioned car door handle switch involves first assembling the cover, button, circuit board, and cover plate of the car door handle switch, and then fixing the cover plate and the cover; then, potting compound is injected into the cover from one injection port, and the potting compound flows to the other end of the cover due to its own fluidity until the potting compound completely fills the inner area of ​​the cover opposite the cover plate; then, the area not filled with potting compound is replenished from another injection port until the potting compound at both injection ports covers the inner edge of the cover plate; finally, the potting compound is cured.

[0011] As a preferred option, the dispensing process is carried out in a vacuum clean environment.

[0012] As a preferred option, after the potting compound has cured, foam is attached to the potting opening at the end without the signal line, and the size of the foam is matched to the potting opening.

[0013] As a preferred option, the housing is fixed with the open end facing upwards on the ultrasonic vibration platform. The surface of the ultrasonic vibration platform is horizontal and flat. The ultrasonic vibration platform is started to vibrate during the potting process.

[0014] The beneficial effects of this invention are: This invention utilizes the flat surface of the cover plate to ensure the surface flatness of the potting compound in the area of ​​the wireless signal receiving chip, thereby eliminating the influence of pits and depressions on the surface of the potting compound on wireless signal transmission, ensuring that the wireless signal can be transmitted to the wireless signal receiving chip in a predetermined direction and frequency and be accurately received. It solves the technical problem of decreased wireless signal reception function after potting compound is applied to a new type of automotive door handle switch. Attached Figure Description

[0015] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is an exploded view of the rear side of the car door handle switch described in this invention; Figure 2 This is an exploded view of the front side of the car door handle switch described in this invention; Figure 3 This is a schematic diagram of the structure of the car door handle switch before glue application after assembly, as described in this invention. Figures 1-3 In the middle: 1. Cover; 2. Button hole; 3. Button; 4. Circuit board; 5. Tactile switch; 6. Wireless signal receiver chip; 7. Cover plate; 8. Encapsulating glue; 9. Signal line; 10. Encapsulation port; 11. Groove; 12. Foam; 13. Step. Detailed Implementation

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

[0017] like Figures 1-3 The car door handle switch shown has reliable wireless signal reception function. It includes a cover 1 with an opening at the rear end and two button holes 2 on the front surface of the cover 1. Buttons 3 are connected to the two button holes 2 respectively. A circuit board 4 is fixedly connected inside the cover 1. The circuit board 4 is provided with tactile switches 5 corresponding to the two button holes 2. A wireless signal receiving chip 6 is provided on the circuit board 4 between the two tactile switches 5. The wireless signal receiving chip 6 is facing the opening end of the cover 1. A flat cover plate 7 is connected to the opening end of the cover 1. The cover plate 7 completely covers the wireless signal receiving chip 6. The inside of the cover 1 is filled with potting compound 8, which completely fills the space between the cover 1 and the cover plate 7.

[0018] The flat surface of the cover plate 7 ensures the smoothness of the potting compound 8 in the area of ​​the wireless signal receiving chip, thereby eliminating the impact of pits and bumps on the surface of the potting compound 8 on wireless signal transmission. This ensures that the wireless signal can be transmitted to the wireless signal receiving chip 6 in the predetermined direction and frequency and be accurately received. This solves the technical problem of decreased wireless signal reception function after potting compound is applied to the new type of automotive door handle switch.

[0019] In this embodiment, one end of the circuit board 4 is connected to an outwardly extending signal line 9, and gaps are left between both ends of the cover plate 7 and the side plates at both ends of the housing 1 to form two potting ports 10. When potting the inside of the housing 1, the potting is done through the two potting ports 10.

[0020] like Figure 1 As shown, in this embodiment, the cover 1 is preferably elongated. Grooves 11, adapted to the thickness of the cover plate 7, are respectively provided on the side walls of the open end of the cover 1. The two side edges of the cover plate 7 are embedded in the two grooves 11. The outer surface of the cover plate 7 is flush with the rear end face of the cover 1. The filling thickness of the potting compound 8 is sufficient to ensure complete adhesion between the potting compound 8 and the surface of the cover plate 7 facing inwards from the cover 1. After curing, the potting compound 8 will be tightly bonded to the cover plate 7, forming a single unit. The cover plate 7 is preferably made of a colorless and transparent non-metallic material, such as glass, plastic, or acrylic.

[0021] In this embodiment, foam 12 is preferably attached to the potting port 10 at the end away from the signal line 9. Foam 12 has good moisture absorption and filtration function, which can effectively prevent water vapor and dust from contaminating the potting compound at the potting port 10, and effectively ensure the stability of the wireless short-range signal transmission of the car door handle switch.

[0022] In this embodiment, the button 3 and the housing 1 are integrally formed by secondary injection molding, and the button 3 is elastic. After integral injection molding, dust and moisture cannot enter the switch through the button 3.

[0023] In this embodiment, a ring of steps 13 for supporting the circuit board 4 is provided on the inner walls of the cover 1 around the perimeter. The edges of the circuit board 4 are in close contact with the steps 13, and potting compound 8 is injected between the circuit board 4 and the cover plate 7.

[0024] The packaging method for manufacturing the car door handle switch described in this embodiment is as follows: First, assemble the cover 1, button 3, circuit board 4, and cover plate 7 of the car door handle switch. The tactile switch 5 and the wireless signal receiving chip 6 are integrated on the circuit board 4, so no separate assembly is required. Fix the cover plate 7 and the cover 1. Then, pour potting compound 8 into the cover 1 from one potting port 10. The potting compound 8 flows to the other end of the cover 1 by its own fluidity until the potting compound 8 completely fills the internal area of ​​the cover 1 opposite the cover plate 7. Then, fill the areas that are not filled with potting compound 8 from the other potting port 10 until the potting compound 8 at both potting ports 10 covers the inner edge of the cover plate 7. Finally, cure the potting compound 8.

[0025] To avoid air bubbles and dust contamination within the potting compound, the potting process is preferably carried out in a vacuum clean environment.

[0026] After the potting compound 8 has cured, foam 12 is attached to the potting port 10 at the end without signal line 9, and the size of foam 12 matches that of potting port 10.

[0027] Before potting, fix the opening end of the casing 1 upward on the ultrasonic vibration platform. The surface of the ultrasonic vibration platform is horizontal and flat. During the potting process, start the ultrasonic vibration platform to vibrate. This can improve the flowability of the potting compound and improve the uniformity of the potting compound in the casing 1.

[0028] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A reliable car door handle switch with wireless signal reception function, comprising a housing with an opening at the rear end and two button holes on the front surface of the housing, each button being connected to a button. A circuit board is fixedly connected inside the housing, and the circuit board is provided with tactile switches corresponding one-to-one with the two button holes. The switch is characterized in that... A wireless signal receiving chip is installed on the circuit board between the two tactile switches. The wireless signal receiving chip faces the opening end of the cover. The opening end of the cover is connected to a flat cover plate, which completely covers the wireless signal receiving chip. The inside of the cover is filled with potting compound, which completely fills the space between the cover and the cover plate.

2. The automotive door handle switch with reliable wireless signal reception function as described in claim 1, characterized in that, One end of the circuit board is connected to an outwardly extending signal line, and gaps are left between the two ends of the cover plate and the two end side plates of the housing to form potting ports.

3. The automotive door handle switch with reliable wireless signal reception function as described in claim 2, characterized in that, The cover is elongated and strip-shaped. Grooves adapted to the thickness of the cover plate are provided on the two side walls of the open end of the cover. The two side edges of the cover plate are embedded in the two grooves. The outer surface of the cover plate is flush with the rear end face of the cover. The filling thickness of the potting compound is sufficient to ensure that the potting compound and the surface of the cover plate facing the inside of the cover are completely adhered.

4. The automotive door handle switch with reliable wireless signal reception function as described in claim 3, characterized in that, Foam is attached to the glue port at the end away from the signal line.

5. The automotive door handle switch with reliable wireless signal reception function as described in claim 4, characterized in that, The button and the cover are integrally formed by secondary injection molding, and the button is elastic.

6. A method for packaging the automotive door handle switch according to any one of claims 2-5, characterized in that, First, assemble the cover, button, circuit board, and cover plate of the car door handle switch, and fix the cover plate and cover. Then, pour potting compound into the cover from one potting port. The potting compound flows to the other end of the cover by its own fluidity until the potting compound completely fills the inner area of ​​the cover opposite the cover plate. Then, fill the areas that have not been filled with potting compound from the other potting port until the potting compound at both potting ports covers the inner edge of the cover plate. Finally, let the potting compound cure.

7. The packaging method according to claim 6, characterized in that, The dispensing process is carried out in a vacuum clean environment.

8. The packaging method according to claim 6, characterized in that, After the potting compound has cured, attach foam to the potting port at the end without the signal line, ensuring the foam size matches the potting port.

9. The packaging method according to claim 6, characterized in that, Fix the cover with the open end facing upwards on the ultrasonic vibration platform. The surface of the ultrasonic vibration platform is horizontal and flat. Start the ultrasonic vibration platform to vibrate during the potting process.

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