A connection terminal having a filter shielding function, an electrical apparatus, and a vehicle

Abstract

This utility model provides a connection terminal, electrical equipment, and vehicle with filtering and shielding functions. It includes a terminal housing, conductive terminals, two filter plates, and two C-shaped clamps. The conductive terminals are installed inside the terminal housing, while the filter plates and clamps are located inside the terminal holes. The filter plates and clamps are respectively located on the outer peripheral walls of the conductive terminals. The filter plates are connected to the conductive terminals, and connecting springs are provided on the filter plates. The free ends of the connecting springs are located outside the terminal holes. The clamps and filter plates are arranged alternately in the circumferential direction. The clamps connect between the two filter plates, and the clamps are fitted with the inner wall of the terminal holes for limiting engagement. By arranging the clamps and filter plates alternately in the circumferential direction, the gap between the conductive terminals and the terminal housing is fully utilized. Furthermore, the free ends of the connecting springs extend outward and connect to the equipment housing, thus forming a grounding application. The clamps' fit with the inner wall of the terminal holes not only facilitates the fixing of the two filter plates but also effectively achieves filtering and shielding functions.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment, and in particular to a connection terminal with filtering and shielding functions, electrical equipment, and transportation vehicles. Background Technology

[0002] Currently, in the field of electrical equipment such as power supply equipment, through-wall connection terminals are widely used to make electrical connections between the inside and outside of the housing. They can maintain the airtightness of the equipment cavity. Since there are power fluctuations and electromagnetic interference in the external power grid, it is necessary to install filter boards on the through-wall connection terminals to eliminate power grid interference, improve signal quality, and ensure the stable operation of the power module.

[0003] In existing technologies, the connection between the through-wall terminal and the filter board generally requires copper busbars and screws for fastening. This occupies a large area of ​​the module cavity and requires multiple screws to fix the filter board. The assembly process is cumbersome, the cost is high, the device integration is low, and the shielding effect of the filter board is poor, making it susceptible to external interference. Utility Model Content

[0004] The primary objective of this invention is to provide a connection terminal with filtering and shielding functions.

[0005] The second objective of this invention is to provide an electrical device and a vehicle having the aforementioned connection terminals.

[0006] The third objective of this invention is to provide a vehicle equipped with the aforementioned electrical devices.

[0007] To achieve the first objective of this utility model, it provides a connection terminal with filtering and shielding functions, including a terminal housing, conductive terminals, two filter plates, and two C-shaped clamps. The terminal housing is provided with a mounting post, and the mounting post has a terminal hole extending through it along the insertion direction. The terminal hole has an outer port and an inner port at both ends in the insertion direction. The conductive terminal is installed in the terminal hole, and the two filter plates are located in the terminal hole. The two filter plates are located on opposite radial sides of the outer peripheral wall of the conductive terminal. The filter plates are connected to the conductive terminal, and the filter plates are provided with connecting springs. The free ends of the connecting springs extend outward from the inner port and are located outside the terminal hole. The two C-shaped clamps are located in the terminal hole, and the two C-shaped clamps are located on opposite radial sides of the outer peripheral wall of the conductive terminal. The two C-shaped clamps and the two filter plates are arranged alternately along the circumferential direction. The C-shaped clamps are connected between the two filter plates, and the C-shaped clamps are in a limiting fit with the inner wall of the terminal hole.

[0008] As can be seen from the above scheme, by using two C-shaped clamps and two filter plates arranged alternately along the circumference, the gap between the conductive terminals and the terminal housing is fully utilized. The free end of the connecting spring extends outward from the inner port and is located outside the terminal hole, which is used to connect with the equipment housing, thereby forming a grounding application. Furthermore, by using the C-shaped clamps to limit the fit with the inner wall of the terminal hole, not only can the two filter plates be easily fixed, but the filtering function and shielding function can also be effectively realized.

[0009] A further solution is to provide a limiting inner edge on the inner wall of the terminal hole, which divides the terminal hole into an outer hole section and an inner hole section. The inner port is connected to the inner hole section, and the outer port is connected to the outer hole section. The two filter plates and the two C-shaped clamps are all located in the inner hole section, and the C-shaped clamps are matched with the limiting inner edge.

[0010] A further proposed solution is to provide a limiting outer edge on the outer peripheral wall of the conductive terminal. The limiting outer edge conductive terminal is divided into an outer connecting section and an inner connecting section. The outer connecting section is located inside the outer hole section, and the inner connecting section is located inside the inner hole section. The limiting outer edge is located outside the limiting inner edge and is limited and matched with the limiting inner edge.

[0011] As can be seen from the above, the setting of the inner edge of the limit not only provides a limit for the C-type clamp and the filter plate, but also provides a stable installation position for the conductive terminals.

[0012] A further proposed solution is to form an installation space by using the inner edge of the limiting section, the outer wall of the inner connecting section, and the inner wall of the inner hole section, with the filter plate located within the installation space.

[0013] A further solution is to fill the installation space with potting compound, which then wraps around the outer perimeter of the filter plate.

[0014] A further proposed solution is to have a straight outer wall on the outer wall of the inner connecting section, and to install the filter plate on the straight outer wall, with the limiting inner edge, the straight outer wall and the inner wall of the inner hole section forming an installation space.

[0015] As can be seen from the above, the arrangement of the flat outer wall allows for better accommodation of the filter board and better connection between the filter board and the conductive terminals, thus achieving filtering and shielding functions. Furthermore, the sealing effect of the potting compound enhances the protection of the circuit board.

[0016] A further improvement is that the terminal housing has a clearance groove on the outer wall near the inner port, and the free end of the connecting spring is located in the clearance groove.

[0017] A further improvement is that the inner port has a clearance ramp at the edge of the clearance groove, the connecting spring is arranged in a V-shape, the connecting spring has a free end and a fixed end at both ends, and a bent part is provided between the free end and the fixed end of the connecting spring, the bent part is connected between the free end and the fixed end, and the bent part is located at the clearance ramp.

[0018] As can be seen from the above, by the free end of the connecting spring moving elastically in the relief groove, the connecting spring can better elastically abut against the equipment housing. Furthermore, by the cooperation of the relief slope and the bending part, the free end can better elastically abut against the mounting hole of the terminal housing and the equipment housing when they are assembled, which can improve the connection stability.

[0019] A further alternative is to provide a mounting flange on the outer periphery of the terminal housing and place the mounting flange near the outer port.

[0020] As can be seen from the above, the flange can be easily connected and fixed to the equipment casing.

[0021] A further improvement is that the filter board has slots at both ends, and the C-shaped clamp has a locking part at both ends, which engages with the slots.

[0022] As can be seen above, the card part engages with the card slot, which facilitates the C-type clamps on both sides to engage and position with the filter plate.

[0023] To achieve the second objective of this utility model, this utility model provides an electrical device, including a device housing and a connection terminal as described above. The device housing has a through mounting hole along the insertion direction, a mounting post is installed in the mounting hole, and the free end of the connecting spring abuts against the inner wall of the mounting hole.

[0024] To achieve the third objective of this utility model, this utility model provides a means of transportation, including electrical equipment as described above.

[0025] As can be seen from the above scheme, the free end of the connecting spring extends outward from the inner port and is located outside the terminal hole. It is used to connect with the mounting hole of the equipment housing to form a grounding application. Moreover, by using the C-type clamp to limit the fit with the inner wall of the terminal hole, it not only conveniently fixes the two filter boards, but also makes full use of the gap between the conductive terminal and the terminal housing, and effectively realizes the filtering function and the shielding function. Attached Figure Description

[0026] Figure 1 This is a partial structural diagram of an embodiment of the electrical equipment of this utility model.

[0027] Figure 2 This is a partial structural diagram of an embodiment of the electrical equipment of this utility model from another perspective.

[0028] Figure 3 This is a partial exploded view of an embodiment of the electrical equipment of this utility model.

[0029] Figure 4 This is a structural diagram of an embodiment of the connecting terminal of this utility model.

[0030] Figure 5 This is an exploded view of an embodiment of the connecting terminal of this utility model.

[0031] Figure 6 This is a structural diagram of the terminal housing in an embodiment of the connection terminal of this utility model.

[0032] Figure 7 This is a radial cross-sectional view of the connection terminal in an embodiment of the electrical equipment of this utility model.

[0033] Figure 8 This is a cross-sectional view of the connecting terminal in an embodiment of the electrical equipment of this utility model, based on the axial direction.

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0035] Examples of electrical equipment and connection terminals:

[0036] Reference Figures 1 to 8 The electrical equipment in this case may include, but is not limited to, motor controllers, chargers, inverters, power modules, or transformers. The electrical equipment includes a housing 10 and connection terminals 2. A mounting hole 101 is provided through the housing 10 along the insertion direction X. A device cavity 104 is provided inside the housing 10. The mounting hole 101 has an external opening 103 at its outer end and an internal opening 102 at its inner end. The internal opening 102 communicates with the device cavity 104. A mounting flange 105 is provided around the external opening 103 on the outer wall of the housing 10. A fixing hole 106 is provided on the mounting flange 105.

[0037] The connecting terminal 2 includes a terminal housing 21, a conductive terminal 22, two filter plates 23, and two C-type clamps 24. The terminal housing 21 is provided with a mounting post 211 and a mounting flange 212. The mounting post 211 is provided with a terminal hole 213 through it along the insertion direction X. The terminal hole 213 is provided with an outer port and an inner port at both ends of the insertion direction X. The mounting flange 212 is located on the outer periphery of the mounting post 211 and is close to the outer port. The mounting flange 212 is provided with a positioning hole through it.

[0038] The inner wall of the terminal hole 213 is provided with two limiting inner edges 214, which are located on opposite sides in the radial direction. The limiting inner edges 214 divide the terminal hole 213 into an outer hole section 215 and an inner hole section 216. The inner port communicates with the inner hole section 216, and the outer port communicates with the outer hole section 215. The terminal housing 21 is provided with two clearance grooves 217 on the outer wall near the inner port, which are located on opposite sides in the radial direction. The inner port is provided with a clearance slope 218 at the edge of each clearance groove 217.

[0039] The conductive terminal 22 is arranged in a columnar shape and installed in the terminal hole 213. The outer peripheral wall of the conductive terminal 22 is provided with two limiting outer edges 223. The two limiting outer edges 223 are located on opposite sides in the radial direction. The limiting outer edges 223 are perpendicular to the axial direction of the conductive terminal 22. The limiting outer edge 223 divides the conductive terminal 222 into an outer connecting section 222 and an inner connecting section 221. The outer connecting section 222 is located in the outer hole section 215, and the inner connecting section 221 is located in the inner hole section 216. The limiting outer edge 223 is located outside the limiting inner edge 214 and is limited and matched with the limiting inner edge 214.

[0040] The inner connecting section 221 has two straight outer walls 224 on its outer wall. The two straight outer walls 224 are located on opposite sides in the radial direction and are adjacent to the limiting outer edge 223. The straight outer walls 224 are perpendicular to the limiting outer edge 223. The inner connecting section 221 has a connecting hole that passes through the two straight outer walls 224.

[0041] The filter board 23 is provided with a filter circuit module, which includes a capacitor and a connecting spring 231. The connecting spring 231 is arranged in a V-shape and has a free end 232 and a fixed end 234 at both ends. A bent part 233 is provided between the free end 232 and the fixed end 234 of the connecting spring 231, and the bent part 233 connects the free end 232 and the fixed end 234.

[0042] Two filter plates 23 and two C-shaped clamps 24 are located in the inner hole section 216 of the terminal hole 213. The two filter plates 23 are located on opposite radial sides of the outer peripheral wall of the conductive terminal 22, and the two C-shaped clamps 24 are located on opposite radial sides of the outer peripheral wall of the conductive terminal 22. The two C-shaped clamps 24 and the two filter plates 23 are arranged alternately in the circumferential direction. The C-shaped clamps 24 are connected between the two filter plates 23. The filter plates 23 are provided with slots 236 at opposite ends, and the C-shaped clamps 24 are provided with locking parts 241 at opposite ends. The locking parts 241 engage with the slots 236, and the C-shaped clamps 24 are limited and engaged with the inner edge 214 of the limiting position. Then, the positioning of the filter plates and clamps is achieved by using the limiting and engaging of the C-shaped clamps 24 with the inner wall of the terminal hole 213.

[0043] The filter plate 23 is located on the flat outer wall 224. The bottom surface of the filter plate 23 is electrically connected to the flat outer wall 224 of the conductive terminal 22. Of course, other electrical connection methods can also be used, such as springs, wires or copper-clad sheets, which can all achieve the electrical connection between the filter plate 23 and the conductive terminal 22. The inner wall of the limiting inner edge 214, the flat outer wall 224 and the inner wall of the inner hole section 216 form an installation space 225. The filter plate 23 is located in the installation space 225 and close to the limiting inner edge 214. The installation space 225 is filled with potting compound, which wraps around the outer periphery of the filter plate 23.

[0044] The free end 232 of the connecting spring 231 extends outward from the inner port and is located outside the terminal hole 213. The bent portion 233 is located at the relief slope 218, and the free end 232 of the connecting spring 231 is located inside the relief groove 217. The mounting post 211 is installed in the mounting hole 101, and the free end 232 of the connecting spring 231 abuts against the inner wall of the mounting hole 101, thereby forming a grounding connection. The mounting flange 212 is fixedly connected to the mounting flange 105 and is connected to the fixing hole 106 by screws passing through the positioning hole.

[0045] Example of a means of transportation:

[0046] The means of transportation include electrical equipment as described above, and the means of transportation may be new energy electric cars, new energy electric buses, new energy electric freight trucks, new energy electric cleaning vehicles, new energy electric rail transit vehicles, new energy electric air transport vehicles, new energy electric shipping vehicles, etc.

[0047] Of course, the above embodiments are only preferred embodiments of this case. In specific applications, there can be more variations. For example, for the limiting fit between the C-type clamp and the inner wall of the terminal hole, in addition to using the limiting inner edge, the limiting groove can also be used to fit with the clamp, which can also achieve position fixation. The filter plate can contact and connect with the curved outer wall of the conductive terminal, which can also achieve filtering and shielding functions. As for the shape arrangement of the C-type clamp, the same U-type clamp or arched clamp can also be used. All the above changes are within the protection scope of this case.

[0048] As can be seen above, the free end of the connecting spring extends outward from the inner port and is located outside the terminal hole. It is used to connect with the mounting hole of the equipment housing to form a grounding application. The C-type clamp is used to limit the fit with the inner wall of the terminal hole, which not only makes it easy to fix the two filter boards, but also makes full use of the gap between the conductive terminal and the terminal housing, and effectively realizes the filtering function and the shielding function.

Claims

1. A connection terminal with filtering and shielding function, characterized in that, include: A terminal housing, wherein the terminal housing is provided with a mounting post, the mounting post having a terminal hole extending through it along the insertion direction, and the terminal hole having an outer port and an inner port at both ends in the insertion direction, respectively; A conductive terminal, wherein the conductive terminal is installed inside the terminal hole; Two filter plates are located inside the terminal hole. The two filter plates are located on opposite radial sides of the outer peripheral wall of the conductive terminal. The filter plates are connected to the conductive terminal. A connecting spring is provided on the filter plate. The free end of the connecting spring extends outward from the inner port and is located outside the terminal hole. Two C-shaped clamps are located inside the terminal hole. The two C-shaped clamps are located on opposite radial sides of the outer peripheral wall of the conductive terminal. The two C-shaped clamps and the two filter plates are arranged alternately in the circumferential direction. The C-shaped clamps are connected between the two filter plates. The C-shaped clamps are in a limiting fit with the inner wall of the terminal hole.

2. The connection terminal according to claim 1, characterized in that: The inner wall of the terminal hole is provided with a limiting inner edge, which divides the terminal hole into an outer hole segment and an inner hole segment. The inner port is connected to the inner hole segment, and the outer port is connected to the outer hole segment. The two filter plates and the two C-shaped clamps are all located in the inner hole segment, and the C-shaped clamps are limited and engaged with the limiting inner edge.

3. The connecting terminal according to claim 2, characterized in that: The outer peripheral wall of the conductive terminal is provided with a limiting outer edge. The limiting outer edge divides the conductive terminal into an outer connecting section and an inner connecting section. The outer connecting section is located inside the outer hole section, and the inner connecting section is located inside the inner hole section. The limiting outer edge is located outside the limiting inner edge and is limited and engaged with the limiting inner edge.

4. The connecting terminal according to claim 3, characterized in that: The inner edge of the limiting section, the outer wall of the inner connecting section, and the inner wall of the inner hole section form an installation space, and the filter plate is located within the installation space.

5. The connection terminal according to claim 4, characterized in that: The installation space is filled with potting compound, which wraps around the outer periphery of the filter plate.

6. The connecting terminal according to claim 4, characterized in that: The outer wall of the inner connecting section is provided with a straight outer wall, and the filter plate is installed on the straight outer wall. The inner edge of the limiting section, the straight outer wall and the inner wall of the inner hole section form an installation space.

7. The connecting terminal according to claim 1, characterized in that: The terminal housing has a clearance groove on its outer wall near the inner port, and the free end of the connecting spring is located in the clearance groove.

8. The connecting terminal according to claim 7, characterized in that: The inner port is provided with a relief slope at the edge of the relief groove. The connecting spring is arranged in a V-shape. The connecting spring is provided with a free end and a fixed end at both ends. The connecting spring is provided with a bent part between the free end and the fixed end. The bent part is connected between the free end and the fixed end and is located at the relief slope.

9. The connecting terminal according to claim 1, characterized in that: The terminal housing is provided with a mounting flange on the outer periphery of the mounting column, and the mounting flange is close to the outer port.

10. The connecting terminal according to any one of claims 1 to 9, characterized in that: The filter plate has slots at opposite ends, and the C-shaped clamp has a locking part at opposite ends, which engages with the slots.

11. Electrical equipment, characterized in that, The device includes a housing and a connection terminal as described in any one of claims 1 to 10, wherein the housing has a through mounting hole along the insertion direction, the mounting post is installed in the mounting hole, and the free end of the connecting spring abuts against the inner wall of the mounting hole.

12. A means of transport, characterized in that, Including the electrical equipment as described in claim 11 above.

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