Door handle switch for vehicle

Abstract

The utility model discloses a door handle switch for a vehicle, which relates to the technical field of switches and comprises a four-pin switch, a first pin of the four-pin switch is connected with a current-limiting resistor and then is connected with a positive electrode of a power supply, a second pin of the four-pin switch is an empty pin, and a third pin and a fourth pin of the four-pin switch are both connected with a negative electrode of the power supply. And the four-pin switch is a key switch. According to the utility model, the current-limiting resistor is arranged between the first pin and the positive electrode of the power supply, so that the magnitude of current passing through the switch is effectively limited, and circuit overheating, short circuit or damage caused by overlarge current is prevented, thereby improving the circuit safety of the whole vehicle door handle switch.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, specifically to a vehicle door handle switch. Background Technology

[0002] With the development of intelligent and electric vehicles, door handle switches, as a crucial component for vehicle access control, face increasingly stringent performance and reliability requirements. Traditional door handle switches often employ simple contact switches, which, while inexpensive, are prone to malfunction in harsh external environments (such as humidity, high temperatures, and vibration), impacting vehicle reliability and user experience. Furthermore, traditional door handle switches are deficient in current control, lacking necessary current-limiting protection measures, making them susceptible to circuit damage due to excessive current.

[0003] Therefore, the development of a car door handle switch has become a problem that urgently needs to be solved. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a vehicle door handle switch. The switch adopts a four-pin design, integrates current limiting function, improves the reliability and durability of the switch, and simplifies the circuit structure and reduces cost.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a vehicle door handle switch, including a four-pin switch, wherein the first pin of the four-pin switch is connected to a current-limiting resistor and then connected to the positive terminal of the power supply, the second pin of the four-pin switch is an unused pin, and the third and fourth pins of the four-pin switch are both connected to the negative terminal of the power supply.

[0006] Furthermore, the four-pin switch is a push-button switch.

[0007] Furthermore, the four-pin switch and the current-limiting resistor are both soldered onto the circuit board to form a complete PCB board.

[0008] Furthermore, the first pin, the third pin, and the fourth pin are all connected to the power supply via connectors.

[0009] The advantages of this utility model compared with the prior art are as follows:

[0010] This invention effectively limits the current flowing through the switch by setting a current-limiting resistor between the first pin and the positive terminal of the power supply, preventing overheating, short circuits, or damage caused by excessive current, thereby improving the overall circuit safety of the vehicle door handle switch.

[0011] The four-pin switch and the current-limiting resistor of this invention are both soldered on the circuit board to form a complete PCB board. This integrated design greatly reduces the size of the switch, making the car door handle switch more compact and easier to install and place in the limited space of the car door.

[0012] The first, third, and fourth pins of this invention are all connected to an external power supply via connectors. This modular design makes the installation and removal of the vehicle door handle switch more convenient and quick, and also facilitates subsequent maintenance and replacement. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of a vehicle door handle switch according to the present invention.

[0014] Figure 2 This is a circuit diagram of a vehicle door handle switch according to the present invention.

[0015] As shown in the figure: 1. Four-pin switch, 2. Current-limiting resistor, 3. Circuit board. Detailed Implementation

[0016] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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. Therefore, they should not be construed as limitations on this utility model.

[0017] In the description of this utility model, "first feature" and "second feature" may include one or more of the indicated features. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the indicated features.

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] The following is a detailed description of a vehicle door handle switch according to the present invention, with reference to the accompanying drawings.

[0020] Combined with appendix Figure 1-2 This invention will be described in detail below.

[0021] A vehicle door handle switch includes a four-pin switch 1, the specific connection method of which is as follows:

[0022] Pin 1: This pin is connected to the positive terminal of the power supply via a current-limiting resistor 2. The current-limiting resistor 2 effectively limits the current flowing through the switch, preventing circuit damage due to excessive current and improving the reliability and safety of the switch.

[0023] Second pin: This pin is unused and can be used flexibly or reserved as a spare pin according to actual needs, reserving space for possible future functional expansion.

[0024] Pins 3 and 4: Both of these pins are directly connected to the negative terminal of the power supply, forming a closed loop. When the four-pin switch 1 is activated (e.g., when a button is pressed), the first pin will be connected to the third and fourth pins, allowing current to flow through the current-limiting resistor 2 to the negative terminal of the power supply, thereby triggering the door to open or related functions.

[0025] Preferably, the four-pin switch 1 of the present invention is a push-button switch, which is convenient for user operation and also easy to integrate into positions such as car door handles, thereby improving the user experience.

[0026] Furthermore, to enhance the product's integration and reliability, the four-pin switch 1 and the current-limiting resistor 2 are both soldered onto a single circuit board 3, forming a complete PCB board. This design not only reduces the size but also facilitates production, assembly, and testing, while simultaneously improving the circuit's anti-interference capability and stability.

[0027] Furthermore, to simplify installation and maintenance, the first, third, and fourth pins of this invention are all connected to an external power source via connectors (such as pins, sockets, etc.). This connection method allows the vehicle door handle switch to be easily connected to the vehicle's electrical system, and also facilitates disassembly and replacement when needed for replacement or maintenance.

[0028] The specific implementation process of this utility model for a vehicle door handle switch is as follows:

[0029] The power supply is connected to the circuit via connector CON1. ​​Current flows through current-limiting resistor 2 (R1) to the four-pin switch 1. In the initial state (button not pressed), the circuit is open. When the button is pressed, the circuit connection path changes, and current flows through pins 1, 3, and 4 to the power supply, forming a closed loop. The current-limiting resistor 2 (R1) limits the current throughout the process, ensuring that the current in the circuit remains within a safe range and protecting the circuit components.

[0030] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A vehicle door handle switch, characterized in that: The device includes a four-pin switch, wherein the first pin of the four-pin switch is connected to a current-limiting resistor and then to the positive terminal of the power supply, the second pin of the four-pin switch is unconnected, and the third and fourth pins of the four-pin switch are both connected to the negative terminal of the power supply.

2. A vehicle door handle switch according to claim 1, characterized in that: The four-pin switch is a push-button switch.

3. A vehicle door handle switch according to claim 2, characterized in that: The four-pin switch and the current-limiting resistor are soldered onto the circuit board to form a complete PCB board.

4. A vehicle door handle switch according to claim 3, characterized in that: The first, third, and fourth pins are all connected to the power supply via connectors.

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