Anti-static structure of switch handle

Abstract

The utility model relates to an anti-static structure of a switch handle, which comprises a handle shell and a built-in circuit board, the handle shell is an electroplated part and is contacted with a static potential arranged on the built-in circuit board, and the built-in circuit board is further connected with a ground wire. The electroplated part is adopted to guide static electricity, the electroplated part is in direct contact with static potential of the circuit board, and then the static electricity is discharged to the outside through the ground wire.

Description

Technical Field

[0001] The utility model relates to the technical field of switch handles, in particular to an anti-static structure of a switch handle. Background Art

[0002] The human body is charged with static electricity due to various reasons (such as static electricity generated by friction between sweaters). When touching the switch components on the car, the static electricity release may cause electrostatic breakdown of the components on the switch, resulting in functional failures. The car switch needs to be designed to prevent static electricity to protect electronic components. Currently, there are two conventional solutions: 1. Add a jumper on the PCB to connect to the nearest metal part. 2. Weld a reed (spring) on the PCB to connect to the nearest metal part. Both of the above solutions require additional conductors, and additional welding parts or assembly are required, increasing the process risk. Content of the Utility Model

[0003] The purpose of the utility model: In order to overcome the defects of the prior art, the utility model provides an anti-static structure of a switch handle, which uses an electroplated part to guide static electricity. The electroplated part is directly in contact with the static electricity potential of the circuit board, and then the static electricity is released to the outside through the ground wire.

[0004] The technical solution of the utility model: An anti-static structure of a switch handle, including a handle shell and an internal circuit board. The handle shell is an electroplated part and is in contact with the static electricity potential provided on the internal circuit board. The internal circuit board is also connected to the ground wire.

[0005] By adopting the above technical solution, the electroplated part is used to guide static electricity, and the electroplated part is directly in contact with the static electricity potential of the circuit board. When in use, the human hand touches the electroplated part of the handle shell, and the handle shell releases static electricity to the static electricity potential of the internal circuit board. The internal circuit board then releases the static electricity to the outside through the ground wire. Compared with the conventional static electricity protection solution, the advantages are as follows:

[0006] 1. Cost reduction: The number of anti-static parts is reduced, and the labor cost and part cost of the assembly process are reduced;

[0007] 2. Production efficiency improvement: The structure is simplified, the process is reduced, and the production efficiency is improved;

[0008] 3. Reliability improvement: The process risk is reduced, the number of parts is reduced, and it is directly connected through the handle shell and the internal circuit board. This design reduces the risk of poor connection and the risk of generating foreign objects during the intermediate process, and improves the reliability of static electricity conduction.

[0009] Preferably, a receiving cavity is provided in the handle shell. The inner wall of the receiving cavity has an electrostatic receiving rib position. The internal circuit board is installed in the receiving cavity. The static electricity potential is provided on the upper surface of the internal circuit board and is in contact with the bottom surface of the electrostatic receiving rib position.

[0010] Preferably, the built-in circuit board is placed on the upper surface of the mounting shell, and the mounting shell has a threading channel below the built-in circuit board. The mounting shell is driven upward to be installed on the handle shell by screws, and can press the static position of the built-in circuit board against the bottom surface of the static rib position. When the screws are installed and tightened, the mounting shell is driven gradually upward to press the static position against the bottom surface of the static rib position, thereby avoiding poor contact.

[0011] Preferably, the upper end of the mounting shell is further provided with a pair of hooks distributed diagonally, and the edge of the built-in circuit board has a notch that can accommodate the rod of the hook, and the hook head of the hook presses the built-in circuit board onto the upper surface of the mounting shell. The rods of the pair of hooks are respectively placed in the notches at the diagonal angles of the built-in circuit board and form a conflict with the inner wall of the notch, which can effectively prevent the built-in circuit board from moving horizontally; and the hook head presses against the upper surface of the built-in circuit board, which can prevent the built-in circuit board from detaching upward from the mounting shell.

[0012] Preferably, a pair of convex pillars are arranged diagonally on the upper end of the mounting shell, and a round hole and a waist-shaped hole are arranged on the built-in circuit board for inserting the convex pillars. By inserting and cooperating with the holes respectively, the built-in circuit board can be positioned to prevent it from moving horizontally; and the waist-shaped hole is also convenient for inserting the convex pillar, which is convenient for assembly.

[0013] Preferably, there are positioning notches on the two opposite sides of the built-in circuit board, the two positioning notches are different, and the mounting shell has a positioning part that can be inserted into the two positioning notches respectively, and the positioning part is composed of two pins arranged at intervals. The two positioning notches are different, which can be reflected in different shapes or sizes. After the two positioning notches are different, the positioning parts adapted thereto are also different, so that the installation position of the circuit board can be fixed, and the card assembly cannot be performed after the position is changed; and the two pins of the positioning part are hollowed out, which can reduce costs.

[0014] Preferably, the mounting shell has a connecting plate, a mounting portion located above the connecting plate, and an extension tube located below the connecting plate, the connecting plate has a mounting hole, the accommodating cavity has a stud above the mounting hole, the screw passes longitudinally through the mounting hole and is screwed to the stud, and the side wall of the mounting portion and the inner wall of the accommodating cavity are guided by longitudinal guide rails and guide grooves. The extension tube can protect the wiring harness in the tube, and the guide rails and guide grooves are used to guide the mounting shell when it is installed.

[0015] Preferably, a plurality of static contact points are distributed at the edge of the upper surface of the built-in circuit board, and a plurality of static contact rib points are correspondingly provided on the inner wall of the accommodating cavity to prevent poor static contact.

[0016] Preferably, it further comprises an external circuit board, on which the ground wire is arranged, and the internal circuit board and the external circuit board are connected via a wiring harness.

[0017] Preferably, both ends of the wire harness are respectively provided with connector A and connector B, and the connectors at both ends are respectively inserted and conductively connected to the built-in circuit board and the external circuit board; both ends of the ground wire are respectively provided with connector C and GND connector, and connector C is inserted and conductively connected to the external circuit board. The insertion and conductive connection are convenient and fast, and the GND connector is the grounding end. Description of the Drawings

[0018] Figure 1 It is a structural diagram of a specific embodiment of the present utility model;

[0019] Figure 2 It is an internal structural diagram of a specific embodiment of the present utility model;

[0020] Figure 3 It is a structural diagram of the handle shell of a specific embodiment of the present utility model;

[0021] Figure 4 It is an assembly diagram of the built-in circuit board and the mounting shell of a specific embodiment of the present utility model;

[0022] Figure 5 It is a disassembled diagram of the built-in circuit board and the mounting shell of a specific embodiment of the present utility model;

[0023] Figure 6 It is a connection diagram of the built-in circuit board and the external circuit board in a specific embodiment of the present utility model.

[0024] In the figure: handle shell 1, built-in circuit board 2, ground wire 3, accommodation cavity 11, static electricity receiving rib position 12, mounting shell 4, wire threading channel 41, hook 42, rod part 421, hook head 422, notch 22, convex column 43, round hole 23, waist-shaped hole 24, positioning notch 25, positioning part 44, pin 441, connecting plate 4a, mounting part 4b, extension tube 4c, mounting hole 4a1, stud 13, guide rail 51, guide groove 52, external circuit board 6, wire harness 7, connector A 71, connector B 72, connector C 31, GND connector 32. Detailed Embodiment

[0025] Next, the technical solutions in this embodiment will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0026] As Figure 1-6As shown in the figure, an anti-static structure of a switch handle of the present utility model includes a handle shell 1, an internal circuit board 2, and an external circuit board 6. A ground wire 3 is provided on the external circuit board 6. The internal circuit board 2 and the external circuit board 6 are also connected by a wire harness 7. Both ends of the wire harness 7 have a connector A71 and a connector B72 respectively, and the connectors at both ends are inserted and conduct electricity with the internal circuit board 2 and the external circuit board 6; both ends of the ground wire 3 have a connector C31 and a GND connector 32 respectively. The connector C31 is inserted and conducts electricity with the external circuit board 6. Of course, the internal circuit board 2 can also be directly connected to the ground wire 3. The handle shell 1 is an electroplated part. A receiving cavity 11 is provided inside the handle shell 1. An electrostatic receiving rib position 12 is provided on the inner wall of the receiving cavity 11. The internal circuit board 2 is installed in the receiving cavity 11. An electrostatic potential is provided on the upper surface of the internal circuit board 2. The internal circuit board 2 is placed on the upper surface of the mounting shell 4. The mounting shell 4 has a wire passing channel 41 corresponding to the lower part of the internal circuit board 2. The mounting shell 4 is installed on the handle shell 1 by screws and can press the electrostatic potential of the internal circuit board 2 against the bottom surface of the electrostatic receiving rib position 12. Specifically, a pair of hooks 42 distributed diagonally are provided at the upper end of the mounting shell 4. An angular notch 22 capable of accommodating the hook rod part 421 of the hook 42 is provided on the edge of the internal circuit board 2. The hook head 422 of the hook 42 presses the internal circuit board 2 against the upper surface of the mounting shell 4; two protruding columns 43 distributed diagonally are also provided at the upper end of the mounting shell 4. A round hole 23 and a waist-shaped hole 24 for inserting the protruding columns 43 are provided on the internal circuit board 2; positioning notches 25 are provided on the opposite side edges of the internal circuit board 2. The two positioning notches 25 are different from each other, and the shapes of the two positioning notches 25 are different. One can be square, one can be circular or triangular, or the diameters can be different. The mounting shell 4 has positioning parts 44 that can be respectively inserted into the two positioning notches 25. The positioning part 44 is composed of two spaced insertion feet 441. Specifically, the mounting shell 4 has a connecting plate 4a, a mounting part 4b integrally provided above the connecting plate 4a, and an extension tube 4c integrally provided below the connecting plate 4a. The connecting plate 4a has a mounting hole 4a1. A stud 13 is provided in the receiving cavity 11 corresponding to the upper part of the mounting hole 4a1. A screw longitudinally passes through the mounting hole 4a1 and is screwed with the stud 13. The side wall of the mounting part 4b and the inner wall of the receiving cavity 11 are also guided by a longitudinal guide rail 51 and a guide groove 52. The extension tube 4c is used to protect the wire harness inside.

[0027] Of course, the internal circuit board 2 can also be directly installed on the handle shell 1 by screws.

[0028] Specifically, a plurality of electrostatic potentials are distributed at the edge of the upper surface of the internal circuit board 2, and a plurality of electrostatic receiving rib positions 12 are also correspondingly provided on the inner wall of the receiving cavity 11. The internal circuit board 2 is generally square, and electrostatic potentials are provided at the four corners of the internal circuit board 2.

[0029] During installation, first install the built-in circuit board 2 at the upper end of the installation shell 4 and place it in the accommodating cavity 11 of the handle shell 1. Then, install the installation shell 4 on the handle shell 1 with screws. When the screws are tightened, the installation shell 4 will be gradually lifted upward, so as to press the static potential of the built-in circuit board 2 tightly against the bottom surface of the static electricity connecting rib 12, thus avoiding poor contact. And the built-in circuit board 2 is connected to the external circuit board 6 through a wire harness 7, and the external circuit board 6 is grounded through a ground wire 3.

[0030] During use, when a person touches the electroplated part of the handle shell 1, the handle shell 1 releases static electricity to the static potential of the built-in circuit board 2. The built-in circuit board 2 then conducts the static electricity to the external circuit board 6 through the wire harness 7, and then the ground wire 3 releases the static electricity to the outside.

[0031] It should be noted that in the description of the present invention, all directional indications (such as up, down, front, back...) are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, in the present invention, the descriptions such as "A" and "B" are only for descriptive purposes and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. In the description of the present invention, the meaning of "several" and "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "couple", "join", "fix" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An anti-static structure for a switch handle, comprising a handle shell (1) and a built-in circuit board (2), characterized in that: The handle shell (1) is an electroplated part and is in contact with the static potential provided on the built-in circuit board (2). The built-in circuit board (2) is also connected to the ground wire (3). A receiving cavity (11) is provided inside the handle shell (1). An electrostatic contact rib position (12) is provided on the inner wall of the receiving cavity (11). The built-in circuit board (2) is installed in the receiving cavity (11). The static potential is provided on the upper surface of the built-in circuit board (2) and is in contact with the bottom surface of the electrostatic contact rib position (12).

2. The anti-static structure of a switch handle according to claim 1, wherein: The built-in circuit board (2) is placed on the upper surface of the mounting shell (4). The mounting shell (4) has a wire passing channel (41) corresponding to the lower part of the built-in circuit board (2). The mounting shell (4) is installed on the handle shell (1) by screws and can press the static potential of the built-in circuit board (2) against the bottom surface of the electrostatic contact rib position (12).

3. The anti-static structure of a switch handle according to claim 2, characterized in that: A pair of hooks (42) distributed diagonally are further provided at the upper end of the mounting shell (4). A notch (22) capable of accommodating the hook rod part (421) is provided on the edge of the built-in circuit board (2). The hook head (422) of the hook (42) also presses the built-in circuit board (2) against the upper surface of the mounting shell (4).

4. The anti-static structure of a switch handle according to claim 2, wherein: A pair of convex columns (43) distributed diagonally are further provided at the upper end of the mounting shell (4). A round hole (23) and a waist-shaped hole (24) for inserting the convex columns (43) are provided on the built-in circuit board (2).

5. The anti-static structure of a switch handle according to claim 2, wherein: Positioning notches (25) are provided on both opposite sides of the built-in circuit board (2). The two positioning notches (25) are different. The mounting shell (4) has positioning parts (44) that can be respectively inserted into the two positioning notches (25). The positioning parts (44) are composed of two pins (441) arranged at intervals.

6. The anti-static structure of a switch handle according to claim 2, wherein: The mounting shell (4) has a connecting plate (4a), a mounting part (4b) above the connecting plate (4a), and an extension tube (4c) below the connecting plate (4a). The connecting plate (4a) has a mounting hole (4a1). A stud (13) is provided in the receiving cavity (11) corresponding to the upper part of the mounting hole (4a1). A screw longitudinally passes through the mounting hole (4a1) and is screwed with the stud (13). The side wall of the mounting part (4b) and the inner wall of the receiving cavity (11) are also guided by the cooperation of a longitudinal guide rail (51) and a guide groove (52).

7. An anti-static structure of a switch handle according to any one of claims 2-6, characterized in that: A plurality of static potentials are distributed at the edge of the upper surface of the built-in circuit board (2). A plurality of electrostatic contact rib positions (12) are also correspondingly provided on the inner wall of the receiving cavity (11).

8. An anti-static structure of a switch handle according to any one of claims 1-6, characterized in that: An external circuit board (6) is further included. The ground wire (3) is provided on the external circuit board (6). The built-in circuit board (2) and the external circuit board (6) are also connected by a wire harness (7).

9. The anti-static structure of a switch handle according to claim 8, wherein: Both ends of the wire harness (7) respectively have a connector A (71) and a connector B (72). The connectors at both ends are respectively inserted into the built-in circuit board (2) and the external circuit board (6) for conduction. Both ends of the ground wire (3) respectively have a connector C (31) and a GND connector (32). The connector C (31) is inserted into the external circuit board (6) for conduction.

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