A modular PCB board connection structure and charging base thereof

Abstract

The present invention relates to the technical field of electrical components, and in particular to a modular PCB board connection structure, comprising a PCB board, an elastic ring and a terminal. The PCB board is provided with a plurality of conductive power-through holes, an end of the terminal is provided with a mounting groove, the elastic ring is sleeved in the mounting groove, the maximum outer diameter of the elastic ring is greater than the aperture of the power-through hole and is elastic, and the maximum outer diameter surface of the elastic ring abuts against the power-through hole. Through the novel connection structure between the PCB board and the terminal, the structure is more streamlined, the assembly and plugging action is simple, and it is suitable for batch automatic assembly, which greatly improves the assembly efficiency. The power-through holes on the PCB are convenient for plugging parts on both sides, which is convenient for component structure design. At the same time, the elastic connection structure is used to avoid the defect of loose solder joints, effectively ensure the trouble-free use time of the product, effectively improve the production efficiency and service life of the charging stand, and improve the market competitiveness of the product.

Description

Technical Field

[0001] The invention relates to the technical field of electrical components, in particular to a modular PCB board connection structure and a charging base thereof. Background Art

[0002] With the popularity of electric vehicles, the charging base for electric vehicles has also undergone many improvements. However, there are still some problems with the existing charging base. The application of PCB boards greatly simplifies the circuit connection structure inside the charging base, but for the charging base manufacturer, each terminal needs to be crimped separately, and the equivalent resistance between the PE and CC1 terminals needs to be separately wired and welded. The assembly process is complicated, the assembly cycle is long, and it is not conducive to automatic mass production. During the use of electric vehicles, the welding structure between the terminal and the PCB board has the risk of loose solder joints due to long-term vibration, resulting in abnormal charging and affecting the use of electric vehicles. Summary of the invention

[0003] In order to overcome the above-mentioned deficiencies of the existing problems, the present invention provides a modular PCB board connection structure and a charging base thereof.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a modular PCB board connection structure, including a PCB board, an elastic ring and a terminal, the PCB board is provided with a plurality of conductive power-through holes, the end of the terminal is provided with a mounting groove, the elastic ring is sleeved in the mounting groove, the maximum outer diameter of the elastic ring is larger than the hole diameter of the power-through hole and is elastic, and the maximum outer diameter surface of the elastic ring abuts the power-through hole.

[0005] By using elastic rings to connect terminals and PCB boards, the terminals with elastic rings can be directly inserted into the PCB board during assembly. The elastic rings are compressed by the power-through holes and close to the power-through holes to achieve electrical conductivity between the terminals and the PCB board. The assembly action is simple and convenient for mass automated production. The power-through holes on the PCB facilitate the insertion of parts on both sides and the design of component structures. At the same time, the elastic rings are elastically connected to the PCB board and can withstand long-term vibrations without loosening, maintaining a good conductive state.

[0006] A charging base with a modular PCB board connection structure includes a back cover and a socket body, wherein the socket body is provided with a PCB board mounting surface, the right side surface of the PCB board abuts against the PCB board mounting surface, the PCB board mounting surface is provided with a plurality of terminal mounting cavities, the terminals are inserted into the terminal mounting cavities, a pressure head and a fixing platform are provided on the back cover, the end surface of the pressure head abuts against the left end surface of the terminal, the end surface of the fixing platform abuts against the left side surface of the PCB board, and the back cover is fixedly connected to the socket body.

[0007] According to another embodiment of the present invention, it further includes a PCB board, an elastic ring, a terminal and a pressure head, the PCB board is provided with a plurality of conductive holes for power transmission, the end of the terminal is provided with a mounting shaft neck, the elastic ring is sleeved on the mounting shaft neck, the maximum outer diameter surface of the elastic ring abuts the power transmission hole, and the clamping end face of the pressure head abuts the left end face of the elastic ring.

[0008] By setting a pressure head, an elastic ring with a smaller maximum outer diameter in the initial state can be used. With the axial extrusion effect of the pressure head, the axial size of the elastic ring becomes smaller, the middle part bulges, the maximum outer diameter becomes larger, and it is close to the inner wall of the power-through hole to achieve conductivity between the terminal and the PCB board.

[0009] According to another embodiment of the present invention, the elastic ring is a drum spring or a finger spring.

[0010] According to another embodiment of the present invention, the end face of the press head is provided with a positioning hole matching the mounting shaft neck, the mounting shaft neck extends into the positioning hole, and the end face of the press head forms a clamping end face. By providing the positioning hole, the head of the terminal is fixed firmly.

[0011] According to another embodiment of the present invention, the end face of the pressure head is provided with a boss extending in the axial direction, the mounting shaft neck is provided with a straight groove matching the boss, the boss extends into the straight groove, and the end face of the boss forms a clamping end face. By providing the boss and the straight groove, the terminal can be axially fixed while preventing the terminal from rotating in the radial direction, thereby reducing the wear of the elastic ring on the inner wall of the current-carrying hole.

[0012] A charging stand including a modular PCB board connection structure includes a back cover and a socket body, wherein the socket body is provided with a PCB board mounting surface, the right side of the PCB board abuts against the PCB board mounting surface, the PCB board mounting surface is provided with a plurality of terminal mounting cavities, the terminals are inserted into the terminal mounting cavities, the pressure heads are fixed on the back cover, the back cover is provided with a fixing platform, the end face of the fixing platform abuts against the left side of the PCB board, and the back cover is fixedly connected to the socket body. By providing a pressure head and a fixing platform integrated with the back cover, the number of parts of the charging stand is reduced, and at the same time, it is convenient to simultaneously complete the effects of tightening the elastic ring, fixing the terminal, and fixing the PCB board during assembly, which greatly improves the assembly efficiency of the product and ensures the normal service life of the charging stand.

[0013] According to another embodiment of the present invention, the PCB board installation surface is further provided with a plurality of positioning pins, and the PCB board is correspondingly provided with pin holes, and the positioning pins are inserted into the pin holes. By providing the positioning pins, the installation position of the PCB board is accurately positioned, ensuring that when the PCB board is installed, the power-on hole and the terminal are accurately positioned, and ensuring a stable assembly process.

[0014] The beneficial effect of the present invention is that, through the connection structure of the new PCB board and the terminal, the structure is more streamlined, the assembly and plugging action is simple, it is suitable for batch automated assembly, and the assembly efficiency is greatly improved. The power-through holes on the PCB facilitate the plugging of parts on both sides and the component structure design. At the same time, the elastic connection structure is used to avoid the defect of loose solder joints, effectively ensuring the trouble-free use time of the product, effectively improving the production efficiency and service life of the charging stand, and improving the market competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a schematic diagram of a modular PCB board connection structure using a drum spring;

[0017] Figure 2 It is a schematic diagram of a modular PCB board connection structure using a finger spring;

[0018] Figure 3 It is a schematic diagram of terminals with two mounting slot structures;

[0019] Figure 4 is a schematic diagram of a charging base including a modular PCB board connection structure;

[0020] Figure 5 yes Figure 4 Enlarged image at the center X;

[0021] Figure 6 It is a schematic diagram of two types of terminals with mounting journal structures;

[0022] Figure 7 It is a schematic diagram of a modular PCB board connection structure with a boss straight groove matching structure;

[0023] Figure 8 It is a schematic diagram of the modular PCB board connection structure with the positioning hole matching structure;

[0024] Fig. 9 yes Figure 4 Enlarged view of the X in the middle: straight groove matching structure with boss;

[0025] Fig.10 yes Fig. 9 A cross-sectional view of the matching structure of the middle belt boss and straight groove in the vertical direction;

[0026] Fig.11 yes Figure 4 Enlarged view of the X in the middle: positioning hole matching structure.

[0027] In the figure, PCB board 1, power hole 11, pin hole 12, elastic ring 2, terminal 3, mounting groove 31, mounting shaft neck 32, straight groove 33, pressure head 4, clamping end face 41, positioning hole 42, boss 43, socket body 5, PCB board mounting surface 51, terminal mounting cavity 52, positioning pin 53, back cover 6, and fixing platform 61. DETAILED DESCRIPTION

[0028] like Figure 1-3 It is a structural schematic diagram of the present invention, a modular PCB board connection structure, including a PCB board 1, an elastic ring 2 and a terminal 3, the PCB board 1 is provided with a plurality of conductive power-through holes 11, the end of the terminal 3 is provided with a mounting groove 31, the elastic ring 2 is sleeved in the mounting groove 31, the maximum outer diameter of the elastic ring 2 is larger than the aperture of the power-through hole 11 and is elastic, and the maximum outer diameter surface of the elastic ring 2 abuts the power-through hole 11.

[0029] The thickness of the PCB board 1 can be more than 3 mm, and the side wall is gold-plated.

[0030] like Figure 4-5 As shown, a charging base with a modular PCB board connection structure includes a back cover 6 and a socket body 5, wherein the socket body 5 is provided with a PCB board mounting surface 51, the right side surface of the PCB board 1 abuts against the PCB board mounting surface 51, a plurality of terminal mounting cavities 52 are provided on the PCB board mounting surface 51, the terminals 3 are inserted into the terminal mounting cavities 52, a pressure head 4 and a fixing platform 61 are provided on the back cover 6, the end surface of the pressure head 4 abuts against the left end surface of the terminal 3, the end surface of the fixing platform 61 abuts against the left side surface of the PCB board 1, and the back cover 6 is fixedly connected to the socket body 5.

[0031] The aperture of the terminal mounting cavity 52 is larger than the outer diameter of the terminal 3. At least one sealing ring is fixed on the terminal 3, which forms a sealing and positioning effect after being installed in the terminal mounting cavity 52. ​​The pressure head 4 and the fixing platform 61 are integrally injection molded with the back cover 6. The PCB board mounting surface 51 can be the bottom surface of the left inner cavity of the socket body 5, and can be formed by one or more boss end surfaces. The left inner cavity of the socket body 5 can be provided with raised ribs to provide positioning for the PCB board 1. The fixing platform 61 can be formed by a circle of raised ribs in the right inner cavity of the back cover 6, or it can be formed by a group of several raised positioning columns.

[0032] like Figure 6-11 As shown, a modular PCB board connection structure includes a PCB board 1, an elastic ring 2, a terminal 3 and a pressing head 4, wherein the PCB board 1 is provided with a plurality of conductive holes 11, the end of the terminal 3 is provided with a mounting journal 32, the elastic ring 2 is sleeved on the mounting journal 32, the maximum outer diameter surface of the elastic ring 2 abuts against the conductive holes 11, and the pressing end face 41 of the pressing head 4 abuts against the left end face of the elastic ring 2.

[0033] Preferably, the elastic ring 2 is a drum spring or a finger contact spring. The finger contact spring is also called a canted coil spring. The drum spring is also called a lantern spring, which is made of brass or other metal materials with good conductivity and toughness. It can be a ring structure or an open structure. The use of an open structure is more convenient for drum spring assembly. When a drum spring is used, the mounting groove 31 can be an ordinary ring groove. When a finger contact spring is used, the bottom of the mounting groove 31 is arc-shaped and matches the inner arc surface of the finger contact spring.

[0034] Preferably, Figure 8 As shown, the end face of the press head 4 is provided with a positioning hole 42 matching the mounting journal 32, the mounting journal 32 extends into the positioning hole 42, and the end face of the press head 4 forms a clamping end face 41. The head of the mounting journal 32 can be provided with a large chamfer to facilitate the insertion of the terminal 3 into the positioning hole 42 during assembly.

[0035] Preferably, Figure 7 As shown, the end face of the pressure head 4 is provided with a boss 43 extending in the axial direction, the mounting journal 32 is provided with a straight groove 33 matching the boss 43, the boss 43 extends into the straight groove 33, and the end face of the boss 43 forms a clamping end face 41. The head of the boss 43 and the opening of the straight groove 33 are chamfered.

[0036] A charging base including a modular PCB board connection structure includes a back cover 6 and a socket body 5, wherein the socket body 5 is provided with a PCB board mounting surface 51, the right side surface of the PCB board 1 abuts against the PCB board mounting surface 51, a plurality of terminal mounting cavities 52 are provided on the PCB board mounting surface 51, the terminals 3 are inserted into the terminal mounting cavities 52, the pressure heads 4 are all fixed on the back cover 6, the back cover 6 is provided with a fixing platform 61, the end surface of the fixing platform 61 abuts against the left side surface of the PCB board 1, and the back cover 6 is fixedly connected to the socket body 5.

[0037] Preferably, Figure 4 As shown, a plurality of positioning pins 53 are provided on the PCB board mounting surface 51 , and pin holes 12 are correspondingly provided on the PCB board 1 , and the positioning pins 53 are inserted into the pin holes 12 .

[0038] The above description is only illustrative rather than restrictive of the present invention. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the appended claims, but all will fall within the scope of protection of the present invention.

Claims

1. A charging stand, characterized in that: The invention comprises a PCB board (1), an elastic ring (2) and a terminal (3), wherein the PCB board (1) is provided with a plurality of conductive holes (11), an end of the terminal (3) is provided with a mounting groove (31), the elastic ring (2) is sleeved in the mounting groove (31), the maximum outer diameter of the elastic ring (2) is larger than the hole diameter of the holes (11) and is elastic, the maximum outer diameter surface of the elastic ring (2) abuts against the holes (11), and comprises a back cover (6) and a socket body (5), the socket body (5) is provided with a PCB board mounting surface (51), the PCB board (1) is provided with a plurality of conductive holes (11), and the end of the terminal (3) is provided with a mounting groove (31), the elastic ring (2) is sleeved in the mounting groove (31), the maximum outer diameter of the elastic ring (2) is larger than the hole diameter of the holes (11) and the elastic ring (2) is elastic, the maximum outer diameter surface of the elastic ring (2) abuts against the holes (11), and the socket body (5) is provided with a PCB board mounting surface (51). The right side surface of the CB board (1) abuts against the PCB board mounting surface (51); a plurality of terminal mounting cavities (52) are provided on the PCB board mounting surface (51); the terminals (3) are inserted into the terminal mounting cavities (52); a pressing head (4) and a fixing platform (61) are provided on the rear cover (6); the end surface of the pressing head (4) abuts against the left end surface of the terminal (3); the end surface of the fixing platform (61) abuts against the left side surface of the PCB board (1); the rear cover (6) is fixedly connected to the socket body (5); and the aperture of the terminal mounting cavity (52) is larger than the outer diameter of the terminal (3).

2. The charging stand according to claim 1, characterized in that: The elastic ring (2) is a drum spring or a finger spring.

3. The charging stand according to claim 1, characterized in that: A plurality of positioning pins (53) are provided on the PCB board mounting surface (51), and pin holes (12) are correspondingly provided on the PCB board (1), and the positioning pins (53) are inserted into the pin holes (12).

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