Electric connection device

Abstract

The utility model provides an electrical connection device, including terminal, elastic conductor and circuit board, the terminal includes connecting portion and plugging portion, the elastic conductor includes mutually connected positioning portion and elastic portion, the positioning portion is connected to the circuit board, the elastic portion surrounds and contacts at least partial outer surface of the connecting portion, and the plugging portion is connected to the circuit board. The connecting part is electrically connected with the circuit board through the positioning part and the elastic part, the elastic conductor comprises the positioning part and the elastic part which are connected with each other, the positioning part is connected to the circuit board, and the elastic part is electrically connected with the circuit board through two dimensions of the axial end face and the radial outer surface of the connecting part. Signal feedback between the terminal and the circuit board is more reliable, the complex environment resistance is stronger, the product is miniaturized, the processing is convenient, and the overall performance is good.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical transmission, and more specifically, to an electrical connection device. Background Art

[0002] When charging, the car needs to conduct a call with the charging pile control signal to wake up the charging mode, and the signal conduction needs to pass through the charging socket terminal. The charging socket terminal is connected to the charging socket circuit board through a conductive structure, and then the signal is transmitted to the vehicle control system through the circuit board. There are currently two main forms of connection between the socket terminal and the circuit board. One is that the ordinary spring clip is directly welded on the circuit board to contact the end face of the socket terminal to achieve signal conduction. During the product assembly process, if the assembly process is not strictly followed, the ordinary spring clip method is easy to compress and deform the spring clip, resulting in poor contact between the socket terminal and the circuit board. One is to assemble a drum spring on the outside of the socket terminal, weld a metal ring on the circuit board, and contact the metal ring through the drum spring to achieve signal conduction. During the product assembly process, the drum spring is easy to fall off, resulting in poor contact between the socket terminal and the circuit board, and there is also a risk of signal loss after complex working conditions.

[0003] Therefore, a new solution is urgently needed in the prior art to solve the above problems. Utility Model Content

[0004] One purpose of the utility model is to provide an electrical connection device to solve the problem of poor contact between the current terminal and the circuit board and the risk of signal loss after complex working conditions.

[0005] According to a first aspect of the utility model, an electrical connection device is provided, comprising a terminal, an elastic conductor and a circuit board, wherein the terminal comprises a connecting portion and a plug-in portion, the elastic conductor comprises a positioning portion and an elastic portion connected to each other, the positioning portion is connected to the circuit board, the elastic portion surrounds and contacts at least a portion of the outer surface of the connecting portion, and the connecting portion is electrically connected to the circuit board via the positioning portion and the elastic portion.

[0006] Optionally, the elastic part also includes a first elastic part and a second elastic part, the first elastic part surrounds and contacts at least a portion of the radial outer surface of the connecting part, the second elastic part is arranged between the circuit board and the end surface of the connecting part, and the second elastic part contacts at least a portion of the end surface of the connecting part.

[0007] Optionally, the first elastic portion includes a bridging portion and oppositely disposed elastic arms connected to two ends of the bridging portion, and the elastic arms and the bridging portion are at least partially electrically connected to the radial outer surface of the connecting portion.

[0008] Optionally, an arc-shaped transition portion is connected between each of the elastic arms and the bridging portion.

[0009] Optionally, the elastic arm is bent to form at least three first contact portions protruding toward the radial outer surface of the connecting portion, and each of the first contact portions abuts against the radial outer surface of the connecting portion.

[0010] Optionally, the second elastic portion is bent to form at least one second contact portion protruding toward the at least partial end surface, and the second contact portion abuts against the at least partial end surface.

[0011] Optionally, an extension direction of the first elastic portion is perpendicular to an extension direction of the second elastic portion.

[0012] Optionally, the two elastic arms and the second elastic portion that are arranged opposite to each other are both connected to a side of the positioning portion away from the circuit board.

[0013] Optionally, the positioning portion includes a connecting bridge on the same plane and two parallel patch portions vertically connected to both ends of the connecting bridge, and the elastic portion also includes a supporting portion extending from the bridging portion and connected to the connecting bridge, and the connecting bridge is arranged vertically to the supporting portion.

[0014] Optionally, the connection between the support portion and the connection bridge is rounded.

[0015] Optionally, the second elastic portion is located between the two patch portions, one end of the second elastic portion is connected to the connecting bridge, and the other end is a free end.

[0016] Optionally, each patch portion is connected to a corresponding welding point of the circuit board by welding.

[0017] Optionally, the positioning portion, the first elastic portion and the second elastic portion are integrally stamped.

[0018] Optionally, a contact surface where the second elastic portion contacts at least a portion of the end surface of the connecting portion is parallel to a positioning surface of the positioning portion.

[0019] The beneficial effects of the utility model are:

[0020] 1. The elastic conductor of the utility model includes a positioning part and an elastic part connected to each other, the positioning part is connected to the circuit board, the first elastic part surrounds and contacts at least part of the outer surface of the connecting part, the second elastic part contacts at least part of the end face of the connecting part, and the elastic part better clamps and fixes the terminal by contacting the axial end face and the radial outer surface of the connecting part, ensuring that the terminal is firmly connected to the circuit board and the terminal is not easy to fall off, so that the signal feedback between the terminal and the circuit board is more reliable, the ability to withstand complex environments is stronger, the product is miniaturized and easy to process, and the overall performance is good.

[0021] 2. The positioning part adopts a patch type, which can fit better with the circuit board and weld more firmly. The positioning part is provided with two parallel patch parts. If one of the patch parts is not welded firmly to the circuit board or the weld is cracked at the welding place, the other patch part can still be firmly connected to the circuit board, thereby ensuring that the terminal can always maintain electrical connection with the circuit board and ensure the stability of signal transmission.

[0022] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0024] Figure 1 This is a schematic diagram of the structure of an electrical connection device of the utility model;

[0025] Figure 2 It is a schematic diagram of the structure of the elastic conductor of the utility model;

[0026] Figure 3 This is a schematic structural diagram of the elastic conductor of the utility model from another angle.

[0027] The following are marked in the figure:

[0028] 1. Terminal; 11. Plug-in portion; 12. Connecting portion; 2. Elastic conductor; 21. Patch portion; 211. Connecting bridge; 22. Elastic arm; 221. First contact portion; 222. Bridging portion; 223. Support portion; 23. Second elastic portion; 231. Second contact portion; 3. Circuit board. DETAILED DESCRIPTION

[0029] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0030] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0031] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0032] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0033] An electrical connection device, such as Figure 1-Figure 3 As shown, it includes a terminal 1, an elastic conductor 2 and a circuit board 3, the terminal 1 includes a connecting portion 12 and a plug-in portion 11, the elastic conductor 2 includes a positioning portion and an elastic portion connected to each other, the positioning portion is connected to the circuit board 3, the elastic portion surrounds and contacts at least a portion of the outer surface of the connecting portion 12, and the connecting portion 12 is electrically connected to the circuit board 3 via the positioning portion and the elastic portion.

[0034] When charging, the car needs to conduct a call with the charging pile control signal to wake up the charging mode, and the signal conduction needs to be through the terminal 1 set in the charging socket. The terminal 1 is connected to the charging socket circuit board 3 through a conductive structure, and then the signal is transmitted to the vehicle control system through the circuit board 3. There are currently two main forms of connection between the socket terminal 1 and the circuit board 3. One is that the ordinary spring is directly welded on the circuit board 3 to contact the end face of the terminal 1 to achieve signal conduction. During the product assembly process, if the assembly process is not strictly followed, the ordinary spring method is easy to compress and deform the spring, resulting in poor contact between the terminal 1 and the circuit board 3. One is to assemble a drum spring on the outside of the terminal 1, and weld a metal ring on the circuit board 3, and the signal is contacted by the drum spring and the metal ring to achieve signal conduction. In the drum spring form, during the product assembly process, the drum spring is easy to fall off, resulting in poor contact between the terminal 1 and the circuit board 3, and there is also a risk of signal loss after complex working conditions.

[0035] The elastic conductor 2 of the present design includes a positioning portion and an elastic portion that are connected to each other. The positioning portion is connected to the circuit board 3, and the elastic portion surrounds and contacts at least a portion of the outer surface of the connecting portion 12. The elastic portion better clamps and fixes the terminal 1 by contacting at least a portion of the outer surface of the connecting portion 12, thereby ensuring that the terminal 1 is firmly connected to the circuit board 3 and the terminal 1 is not easy to fall off, so that the signal feedback between the terminal 1 and the circuit board 3 is more reliable, the ability to withstand complex environments is stronger, the product is miniaturized and easy to process, and the overall performance is good.

[0036] In some embodiments, Figure 1-Figure 2 As shown, the elastic portion also includes a first elastic portion and a second elastic portion 23, the first elastic portion surrounds and contacts at least a portion of the radial outer surface of the connecting portion 12, the second elastic portion 23 is arranged between the circuit board 3 and the end surface of the connecting portion 12, and the second elastic portion 23 contacts at least a portion of the end surface of the connecting portion 12.

[0037] The first elastic portion surrounds and contacts at least part of the radial outer surface of the connecting portion 12, and the second elastic portion 23 contacts at least part of the end surface of the connecting portion 12. This structure better clamps and fixes the terminal 1 by contacting the axial end surface and the radial outer surface of the connecting portion 12, thereby ensuring that the terminal 1 is firmly connected to the circuit board 3 and the terminal 1 is not easy to fall off, making the signal feedback between the terminal 1 and the circuit board 3 more reliable, and having stronger resistance to complex environments. The product is easy to miniaturize and process, and has good overall performance.

[0038] In some embodiments, Figure 1-Figure 2 As shown, the first elastic portion includes a bridging portion 222 and oppositely disposed elastic arms 22 connected to both ends of the bridging portion 222 , and the elastic arms 22 and the bridging portion 222 are at least partially electrically connected to the radial outer surface of the connecting portion 12 .

[0039] The elastic arms 22 arranged relatively to each other are elastic and can elastically clamp the connecting portion 12 when the connecting portion 12 of the terminal 1 is inserted. The connecting portion 12 can be well clamped without damaging the outer wall of the connecting portion 12. The elastic arms 22 and the bridging portion 222 are at least partially electrically connected to the radial outer surface of the connecting portion 12. After being surrounded, the fixation is more secure and the contact is more stable, so that the signal feedback between the terminal 1 and the circuit board 3 is more reliable.

[0040] In some embodiments, Figure 2 As shown, an arc-shaped transition portion is connected between each of the elastic arms 22 and the bridging portion 222 .

[0041] The arc-shaped transition portion is designed to prevent the stress concentration and thus fracture at this location during the insertion of the connecting portion 12 into the elastic conductor 2 .

[0042] In some embodiments, Figure 2 As shown, the elastic arm 22 is bent to form at least three first contact portions 221 protruding toward the radial outer surface of the connecting portion 12 , and each of the first contact portions 221 abuts against the radial outer surface of the connecting portion 12 .

[0043] At least three first contact portions 221 are added to better strengthen the abutment with the radial outer surface of the connecting portion 12 to ensure stable signal transmission between the terminal 1 and the circuit board 3 .

[0044] In some embodiments, Figure 2 As shown, the second elastic portion 23 is bent to form at least one second contact portion 231 protruding toward the at least part of the end surface, and the second contact portion 231 abuts against the at least part of the end surface.

[0045] On the basis of strengthening the contact between the first contact portion 221 and the radial outer surface of the connecting portion 12, at least one second contact portion 231 is added to strengthen the abutment with at least part of the end surface of the connecting portion 12. The double strengthened abutment ensures stable signal transmission between the terminal 1 and the circuit board 3.

[0046] In some embodiments, Figure 2 As shown, the extending direction of the first elastic portion is perpendicular to the extending direction of the second elastic portion 23 .

[0047] The radial outer surface and axial end face of the terminal 1 are designed to be vertical, so the extension direction of the first elastic part and the extension direction of the second elastic part 23 must also be set vertically to ensure radial and axial end face contact with the connecting part 12. Double contact ensures the stability of signal transmission between the terminal 1 and the circuit board 3.

[0048] In some embodiments, Figure 3 As shown, the two elastic arms 22 and the second elastic portion 23 arranged opposite to each other are both connected to a side of the positioning portion away from the circuit board 3 .

[0049] The purpose of such design is to prevent the elastic arm 22 and the second elastic portion 23 from interfering with the welding connection after the positioning portion and the circuit board 3 are attached.

[0050] In some embodiments, Figure 3 As shown, the positioning portion includes a connecting bridge 211 on the same plane and two parallel patch portions 21 vertically connected to the two ends of the connecting bridge 211, and the elastic portion also includes a supporting portion 223 extending from the bridging portion 222 and connected to the connecting bridge 211, and the connecting bridge 211 is vertically arranged to the supporting portion 223.

[0051] The positioning portion adopts two patch portions 21 parallel to each other. The patch-type patch portion 21 can fit better with the circuit board 3 and be more firmly welded. Moreover, during use, if one of the two patch portions 21 set in the positioning portion is not firmly welded to the circuit board 3 or the weld is cracked at the welding place, the other patch portion 21 can still be firmly connected to the circuit board 3, thereby ensuring that the terminal 1 can always maintain electrical connection with the circuit board 3, ensuring the stability of signal transmission.

[0052] In some embodiments, Figure 3 As shown, the connection between the support portion 223 and the connection bridge 211 is rounded.

[0053] The rounding of the connection between the support portion 223 and the connecting bridge 211 is a bending process in the stamping process, which facilitates the forming of the support portion 223, the bridge portion 222 and the elastic arm 22 after the plate is stamped.

[0054] In some embodiments, Figure 3 As shown, the second elastic portion 23 is located between the two patch portions 21 , one end of the second elastic portion 23 is connected to the connecting bridge 211 , and the other end is a free end.

[0055] Each patch portion 21 is provided corresponding to each elastic arm 22, and the second elastic portion 23 is located between the two patch portions 21, which is equivalent to being located between the two elastic arms 22. The connecting portion 12 of the terminal 1 is inserted into the elastic portion and clamped by the relative elastic arms 22. When installed in place, the end face of the connecting portion 12 just abuts against the second elastic portion 23, and the elastic conductor 2 and the connecting portion 12 of the terminal 1 abut in both radial and axial directions, thereby increasing the connection stability between the elastic conductor 2 and the terminal 1, ensuring that the terminal 1 can always maintain an electrical connection with the circuit board 3, and ensuring the stability of signal transmission.

[0056] In some embodiments, Figure 1 As shown, each patch portion 21 is connected to a corresponding welding position of the circuit board 3 by welding.

[0057] The circuit board 3 is designed with a conductive element for the patch part 21 to conduct electricity. The patch part 21 is attached to the corresponding welding position where the conductive element is located, and is welded to the circuit board 3 to complete the electrical connection with the circuit board 3.

[0058] In some embodiments, Figure 1-Figure 3 As shown, the positioning portion, the first elastic portion and the second elastic portion 23 are integrally stamped.

[0059] The positioning portion, the first elastic portion and the second elastic portion 23 are integrally stamped and formed, and the overall structure is more stable, thereby increasing the overall service life of the elastic conductor 2 .

[0060] In some embodiments, Figure 3 As shown, the contact surface between the second elastic portion 23 and at least a portion of the end surface of the connecting portion 12 is parallel to the positioning surface of the positioning portion.

[0061] Because the positioning portion is attached to the circuit board 3 and arranged parallel to the circuit board 3, the contact surface between the second elastic portion 23 and at least part of the axial end surface of the connecting portion 12 is parallel to the positioning surface of the positioning portion. This is designed to make the axis of the terminal 1 contact the contact surface vertically, so that the terminal 1 can apply pressure to the second elastic portion 23 in the vertical direction, and then indirectly apply pressure to the positioning portion in the vertical direction, ensuring that the directions of the forces applied to the two are consistent, preventing the direction of the pressure applied to the second elastic portion 23 from being different from the direction of the pressure indirectly applied to the positioning portion, resulting in the weld between the positioning portion and the circuit board 3 being torn, resulting in the risk of unstable signal connection or signal disconnection.

[0062] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An electrical connection device, characterized in that: The invention comprises a terminal, an elastic conductor and a circuit board, wherein the terminal comprises a connecting portion and a plug-in portion, the elastic conductor comprises a positioning portion and an elastic portion connected to each other, the positioning portion is connected to the circuit board, the elastic portion surrounds and contacts at least a part of the outer surface of the connecting portion, and the connecting portion is electrically connected to the circuit board via the positioning portion and the elastic portion.

2. An electrical connection device according to claim 1, characterized in that: The elastic part also includes a first elastic part and a second elastic part, the first elastic part surrounds and contacts at least part of the radial outer surface of the connecting part, the second elastic part is arranged between the circuit board and the end surface of the connecting part, and the second elastic part contacts at least part of the end surface of the connecting part.

3. An electrical connection device according to claim 2, characterized in that: The first elastic portion includes a bridging portion and elastic arms that are oppositely arranged and connected to two ends of the bridging portion. The elastic arms and the bridging portion are at least partially electrically connected to the radial outer surface of the connecting portion.

4. An electrical connection device according to claim 3, characterized in that: An arc-shaped transition portion is connected between each of the elastic arms and the bridging portion.

5. An electrical connection device according to claim 3, characterized in that: The elastic arm is bent to form at least three first contact portions protruding toward the radial outer surface of the connecting portion, and each of the first contact portions abuts against the radial outer surface of the connecting portion.

6. An electrical connection device according to claim 2, characterized in that: The second elastic portion is bent to form at least one second contact portion protruding toward the at least partial end surface, and the second contact portion abuts against the at least partial end surface.

7. An electrical connection device according to claim 2, characterized in that: An extending direction of the first elastic portion is perpendicular to an extending direction of the second elastic portion.

8. An electrical connection device according to claim 3, characterized in that: The two elastic arms and the second elastic portion which are arranged opposite to each other are both connected to a side of the positioning portion which is away from the circuit board.

9. An electrical connection device according to claim 8, characterized in that: The positioning portion includes a connecting bridge on the same plane and two parallel patch portions vertically connected to both ends of the connecting bridge. The elastic portion also includes a supporting portion extending from the bridging portion and connected to the connecting bridge. The connecting bridge is vertically arranged to the supporting portion.

10. An electrical connection device according to claim 9, characterized in that: The connection between the support portion and the connection bridge is rounded.

11. An electrical connection device according to claim 9, characterized in that: The second elastic portion is located between the two patch portions, one end of the second elastic portion is connected to the connecting bridge, and the other end is a free end.

12. An electrical connection device according to claim 9, characterized in that: Each patch portion is connected to a corresponding welding position of the circuit board by welding.

13. An electrical connection device according to claim 2, characterized in that: The positioning portion, the first elastic portion, and the second elastic portion are integrally stamped and formed.

14. An electrical connection device according to claim 2, characterized in that: A contact surface where the second elastic portion contacts at least a portion of an end surface of the connecting portion is parallel to a positioning surface of the positioning portion.

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