Grounding type onboard connection system

Abstract

The utility model provides a grounding-type onboard connection system, and the system comprises a metal housing which is internally provided with a circuit board; the connector is installed on the side wall of the metal shell, and the connector comprises a positive terminal, a negative terminal and a grounding terminal; the conductive piece is fixed on the circuit board and is opposite to the positive terminal and the negative terminal; wherein the positive terminal and the negative terminal penetrate through the metal shell and are electrically connected with the conductive piece, and the grounding terminal is inserted into the metal shell and is in contact with the metal shell, so that the connector and the metal shell are grounded together. Compared with the prior art, the grounding type onboard connection system cancels a traditional wire grounding mode, saves parts, reduces cost, and is convenient to assemble.

Description

Technical Field

[0001] The utility model relates to a grounding type on-board connection system, belonging to the field of electronic connection devices. Background Art

[0002] Currently in the market, when the connector is connected to an external device, the conductive terminals of most connectors are electrically connected to the circuit board inside the external device through wires. In order to facilitate heat dissipation and increase strength, some external devices use a metal power supply casing, which requires the connector and the external device to be reliably grounded. The grounding terminals of most connectors are grounded by long wires, which brings problems such as increased product material costs and labor assembly costs.

[0003] In view of this, it is indeed necessary to improve the existing grounding type onboard connection system to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a grounding type on-board connection system, which eliminates the traditional wire grounding method, not only saves parts and reduces costs, but also facilitates assembly.

[0005] To achieve the above object, the utility model provides a grounding type onboard connection system, comprising:

[0006] A metal shell, wherein a circuit board is installed in the metal shell;

[0007] A connector, mounted on a side wall of the metal shell, the connector comprising a positive terminal, a negative terminal and a ground terminal;

[0008] A conductive member, fixed on the circuit board and opposite to the positive terminal and the negative terminal;

[0009] The positive terminal and the negative terminal pass through the metal shell and are electrically connected to the conductive member, and the grounding terminal is inserted into the metal shell and contacts the metal shell, so that the connector and the metal shell are grounded together.

[0010] As a further improvement of the present invention, a grounding hole is provided on the side wall of the metal shell, and the grounding terminal is inserted into the grounding hole and is tightly attached to the inner wall of the grounding hole.

[0011] As a further improvement of the utility model, one end of the grounding terminal is torn into a plurality of contact arms, and the plurality of contact arms are inserted into the grounding hole and pressed and fitted with the inner wall surface of the grounding hole.

[0012] As a further improvement of the present invention, a mounting portion is provided on the outer wall of the metal shell, and the mounting portion includes an outwardly protruding mounting platform and an mounting space formed by the mounting platform. The connector is correspondingly provided with a mating portion, and the mating portion is embedded in the mounting space and surrounded by the mounting platform.

[0013] As a further improvement of the utility model, an assembly hole penetrating the side wall of the metal shell is provided in the installation space, the grounding hole is located below the assembly hole, the connector is provided with a plug-in portion inserted into the assembly hole, and the positive terminal and the negative terminal both penetrate the plug-in portion.

[0014] As a further improvement of the utility model, a limit groove is provided below the plug-in part, the limit groove and the grounding hole are aligned with each other, and the grounding terminal is provided with a positioning part, the positioning part is accommodated in the limit groove and abuts against the inner wall surface of the limit groove.

[0015] As a further improvement of the utility model, a first fixing hole is provided on the mating portion, and a second fixing hole is provided on the mounting portion, and the first fixing hole and the second fixing hole are aligned with each other so that a fastener passes through the first fixing hole and the second fixing hole to fix the connector on the metal shell.

[0016] As a further improvement of the present invention, the grounding hole is a blind hole, and two conductive members are provided to correspond to the positive terminal and the negative terminal respectively.

[0017] As a further improvement of the utility model, an opening is provided on the conductive member for the positive terminal / negative terminal to pass through, and a fastening hole is also provided on the conductive member that is arranged perpendicular to the opening, and the fastening hole is connected to the opening so that a fastener can pass through the fastening hole to fix the positive terminal / negative terminal in the opening.

[0018] As a further improvement of the present invention, a connecting portion is provided at one end of the connector away from the metal shell, and the free ends of the positive terminal, the negative terminal and the ground terminal are all accommodated in the connecting portion.

[0019] The beneficial effect of the utility model is that the utility model fixes the conductive member opposite to the positive terminal and the negative terminal of the connector on the circuit board, and then the positive terminal and the negative terminal can be electrically connected to the conductive member through the metal shell, and the grounding terminal is inserted into the metal shell and contacts the metal shell, so that the connector and the metal shell are grounded together. Compared with the prior art, the grounding type on-board connection system of the utility model eliminates the traditional wire grounding method, saves parts, reduces costs, and is easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the grounding type onboard connection system of the utility model.

[0021] Figure 2 yes Figure 1 Another angle diagram of the three-dimensional structure.

[0022] Figure 3 yes Figure 1 Cross-sectional view of .

[0023] Figure 4 yes Figure 1 Exploded diagram.

[0024] Figure 5 yes Figure 4 Enlarged view of the circle A in the middle.

[0025] Figure 6 yes Figure 4 Schematic diagram of the three-dimensional structure of the metal shell.

[0026] Figure 7 yes Figure 4 Schematic diagram of the three-dimensional structure of the connector. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] See also Figure 1-Figure 2 As shown, the utility model discloses a grounding type on-board connection system 100, comprising: a metal shell 1, in which a circuit board 2 is installed; a connector 3, which is installed on the side wall of the metal shell 1, and the connector 3 includes a positive terminal 31, a negative terminal 32 and a grounding terminal 33; a conductive member 4, which is fixed on the circuit board 2 and is opposite to the positive terminal 31 and the negative terminal 32. Compared with the prior art, the grounding type on-board connection system 100 of the utility model eliminates the traditional wire grounding method, saves parts, reduces costs, and is easy to assemble.

[0029] like Figure 3-Figure 7 As shown, the positive terminal 31 and the negative terminal 32 pass through the metal shell 1 and are electrically connected to the conductive member 4. Two conductive members 4 are provided to correspond to the positive terminal 31 and the negative terminal 32 respectively. In other words, the positive terminal 31 and the negative terminal 32 are directly in electrical contact with the conductive member 4, so that the positive terminal 31 and the negative terminal 32 are electrically connected to the circuit board 2. The conductive member 4 is made of copper material and has good conductivity. The positive terminal 31 and the negative terminal 32 cancel the wire connection method, reducing the switching cost.

[0030] The conductive member 4 is provided with an opening 41 for the positive terminal 31 / negative terminal 32 to pass through. The conductive member 4 is also provided with a fastening hole 42 arranged perpendicular to the opening 41. The fastening hole 42 is communicated with the opening 41 so that a fastener (not numbered) passes through the fastening hole 42 to fix the positive terminal 31 / negative terminal 32 in the opening 41. When one end of the positive terminal 31 / negative terminal 32 is located in the opening 41, the fastener passes through the fastening hole 42 and penetrates into the opening 41 to squeeze the positive terminal 31 / negative terminal 32. In this embodiment, the fastener is a screw. This connection method is simple and easy to operate, ensuring that the positive terminal 31 and the negative terminal 32 are in effective contact with the conductive member 4, and the firmness of the connection can still be ensured even when the metal shell 1 is shaken.

[0031] The grounding terminal 33 is inserted into the metal shell 1 and contacts the metal shell 1, so that the connector 3 and the metal shell 1 are grounded together. This grounding method eliminates the method of grounding the grounding terminal 33 through a wire, and directly contacts the grounding terminal 33 with the metal shell 1 to achieve grounding, which saves costs and is more convenient to assemble. Specifically, a grounding hole 11 is provided on the side wall of the metal shell 1, and the grounding terminal 33 is inserted into the grounding hole 11 and is tightly attached to the inner wall of the grounding hole 11. Preferably, one end of the grounding terminal 33 is torn into a plurality of contact arms 331, and the plurality of contact arms 331 are inserted into the grounding hole 11 and squeezed and fitted with the inner wall surface of the grounding hole 11.

[0032] Preferably, one end of the grounding terminal 33 is evenly torn into four contact arms 331, there is a gap between the contact arms 331, and the free end of the contact arm 331 is set larger. When the contact arm 331 is inserted into the grounding hole 11, the contact arm 331 is tightly attached to the inner wall of the grounding hole 11 to ensure reliable grounding. In other embodiments, an elastic structure can also be provided on the grounding terminal 33 so that when the grounding terminal 33 is inserted into the grounding hole 11, it is tightly attached to the inner wall of the grounding hole 11, and there is no limitation to this. The grounding hole 11 is a blind hole, and a thickened portion (not numbered) is provided at a position corresponding to the grounding hole 11 in the metal shell 1, so that the blind hole has a certain depth. When the grounding terminal 33 is inserted into the grounding hole 11, it is completely wrapped to ensure the reliability of grounding.

[0033] In this embodiment, the metal shell 1 is arranged in a rectangular shape, and a mounting portion 12 is provided on the outer wall of the metal shell 1. The mounting portion 12 includes an outwardly protruding mounting platform 121 and a mounting space 122 surrounded by the mounting platform 121. The connector 3 is correspondingly provided with a mating portion 34, and the mating portion 34 is embedded in the mounting space 122 and surrounded by the mounting platform 121; an assembly hole 123 penetrating the side wall of the metal shell 1 is provided in the installation space 122, and the connector 3 is also provided with a plug-in portion 35 inserted into the assembly hole 123. Preferably, the grounding hole 11 is located below the assembly hole 123, and the positive terminal 31 and the negative terminal 32 both penetrate the plug-in portion 35.

[0034] The connector 3 is provided with a connecting portion 36 at one end away from the metal shell 1, and the free ends of the positive terminal 31, the negative terminal 32 and the grounding terminal 33 are all accommodated in the connecting portion 36. It can be understood that the matching portion 34 is located between the connecting portion 36 and the plug-in portion 35, the positive terminal 31 and the negative terminal 32 pass through the connecting portion 36, the matching portion 34 and the plug-in portion 35 of the connector 3, and the grounding terminal 33 passes through the connecting portion 36 and the matching portion 34 of the connector 3.

[0035] A limiting groove 37 is provided below the plug-in portion 35, and the limiting groove 37 is aligned with the grounding hole 11. The grounding terminal 33 is provided with a positioning portion (not numbered), and the positioning portion is received in the limiting groove 37 and abuts against the inner wall surface of the limiting groove 37. When the grounding terminal 33 is inserted into the grounding hole 11, since the positioning portion abuts against the inner wall surface of the limiting groove 37, the grounding terminal 33 is prevented from falling off from the connector 3, which affects the connection effect with the device.

[0036] The matching portion 34 is provided with a first fixing hole 341, and the mounting portion 12 is provided with a second fixing hole 124. The first fixing hole 341 and the second fixing hole 124 are aligned with each other so that a fastener passes through the first fixing hole 341 and the second fixing hole 124 to fix the connector 3 on the metal shell 1. A thickened portion is provided in the metal shell 1 at a position corresponding to the second fixing hole 124. The second fixing hole 124 is a blind hole and has a certain depth, thereby ensuring the firmness of the installation of the connector 3 and the metal shell 1.

[0037] The connector 3 also includes a sealing gasket 5 sleeved on the outside of the plug-in portion 35 and the limiting groove 37. When the connector 3 is connected to the metal shell 1, the sealing gasket 5 is tightly attached between the connector 3 and the metal shell 1. A sealing groove 38 is also provided on the side of the mating portion 34 close to the metal shell 1. The sealing gasket 5 is accommodated in the sealing groove 38. A limiting rib (unnumbered) is also provided in the sealing groove 38 to limit the sealing gasket 5.

[0038] In summary, the present invention fixes the conductive member 4 on the circuit board 2, which is opposite to the positive terminal 31 and the negative terminal 32 of the connector 3, so that the positive terminal 31 and the negative terminal 32 can be electrically connected to the conductive member 4 through the metal shell 1, and the grounding terminal 33 is inserted into the metal shell 1 and contacts the metal shell 1, so that the connector 3 and the metal shell 1 are grounded together. Compared with the prior art, the grounding type on-board connection system 100 of the present invention eliminates the traditional wire grounding method, saves parts, reduces costs, and is easy to assemble.

[0039] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model.

Claims

1. A grounding type onboard connection system, characterized in that: include: A metal shell, wherein a circuit board is installed in the metal shell; A connector, mounted on a side wall of the metal shell, the connector comprising a positive terminal, a negative terminal and a ground terminal; A conductive member, fixed on the circuit board and opposite to the positive terminal and the negative terminal; The positive terminal and the negative terminal pass through the metal shell and are electrically connected to the conductive member, and the grounding terminal is inserted into the metal shell and contacts the metal shell, so that the connector and the metal shell are grounded together.

2. The grounding type onboard connection system according to claim 1, characterized in that: A grounding hole is provided on the side wall of the metal shell, and the grounding terminal is inserted into the grounding hole and closely adheres to the inner wall of the grounding hole.

3. The grounding type onboard connection system according to claim 2, characterized in that: One end of the grounding terminal is torn into a plurality of contact arms, and the plurality of contact arms are inserted into the grounding hole and pressed and fitted with the inner wall surface of the grounding hole.

4. The grounding type onboard connection system according to claim 2, characterized in that: An installation portion is provided on the outer side wall of the metal shell, and the installation portion includes an outwardly protruding installation platform and an installation space surrounded by the installation platform. The connector is correspondingly provided with a mating portion, and the mating portion is embedded in the installation space and surrounded by the installation platform.

5. The grounding type onboard connection system according to claim 4, characterized in that: An assembly hole penetrating the side wall of the metal shell is provided in the installation space, the grounding hole is located below the assembly hole, the connector is provided with a plug-in portion inserted into the assembly hole, and the positive terminal and the negative terminal both penetrate the plug-in portion.

6. The grounding type onboard connection system according to claim 5, characterized in that: A limiting groove is provided below the plug-in portion, the limiting groove and the grounding hole are aligned with each other, and the grounding terminal is provided with a positioning portion, the positioning portion is received in the limiting groove and abuts against the inner wall surface of the limiting groove.

7. The grounding type onboard connection system according to claim 4, characterized in that: The mating portion is provided with a first fixing hole, and the mounting portion is provided with a second fixing hole. The first fixing hole and the second fixing hole are aligned with each other so that a fastener passes through the first fixing hole and the second fixing hole to fix the connector on the metal shell.

8. The grounding type onboard connection system according to claim 2, characterized in that: The grounding hole is a blind hole, and two conductive members are provided to correspond to the positive terminal and the negative terminal respectively.

9. The grounding type onboard connection system according to claim 8, characterized in that: The conductive member is provided with an opening for the positive terminal / negative terminal to pass through, and the conductive member is also provided with a fastening hole arranged perpendicular to the opening, and the fastening hole is connected to the opening so that a fastener passes through the fastening hole to fix the positive terminal / negative terminal in the opening.

10. The grounding type onboard connection system according to claim 1, characterized in that: A connecting portion is provided at one end of the connector away from the metal shell, and free ends of the positive terminal, the negative terminal and the grounding terminal are all accommodated in the connecting portion.

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