Current shunt

Abstract

The utility model relates to the technical field of shunts, in particular to a current shunt which comprises a substrate, a conductive column is arranged at the top of the substrate through a current plate, a shunt body is arranged at the top of the substrate through an installation seat in an inserted mode, the shunt body comprises a connection plate arranged on the installation seat in an inserted mode, and a resistance plate and a conductive plate are arranged on the connection plate. The current-conducting plate is provided with a connecting hole used in cooperation with the current-conducting column, the connecting plate is arranged on the mounting base in an inserted mode through a clamping block, and a clamping block is arranged in the mounting base through a second telescopic rod. According to the invention, rapid installation and disassembly are realized by combining the effects of a second telescopic rod and a second spring, the working efficiency is greatly improved, and meanwhile, the first telescopic rod and the contact plate arranged on the inner wall of the connecting hole are matched with the effects of a guide column and a limiting hole, so that stable contact between a conductive column and the contact plate is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of shunts, in particular to a current shunt. Background Technique

[0002] Shunts are widely used in the current measurement range of instruments and can be used for the return, current limiting, and current sharing sampling detection of communication systems, electronic complete machines, power supplies for automatic control, etc. The main characteristic of the shunt body is a low resistor, on which a sampling terminal is provided.

[0003] Traditional current shunts are usually fixed by fasteners such as bolts and nuts. The installation and disassembly process requires the aid of special tools, which is cumbersome and time-consuming. In situations where the shunt needs to be frequently replaced or repaired, this inefficient disassembly and assembly method will seriously affect work efficiency. Due to the difficulty of disassembly and assembly, when traditional shunts fail or need maintenance operations such as calibration or replacement of resistor plates, the entire device often needs to be removed from the circuit, increasing the complexity and cost of maintenance. At the same time, the long disassembly and assembly process may also cause unnecessary damage to the device. In addition, in different application scenarios, there may be differences in the installation space, connection method, etc. of the current shunt. Due to the fixed structure of traditional shunts, it is difficult to quickly adapt to these changes, restricting their application range. Therefore, we propose a current shunt. Content of the Utility Model

[0004] The purpose of the utility model is to provide a current shunt to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: It includes a substrate. On both sides of the top of the substrate, current plates are provided. On the top of the current plates, a number of conductive posts are evenly arranged. On both sides of the top of the substrate, inside the current plates, mounting seats are also provided. A shunt body is inserted on the mounting seats. The shunt body includes a connecting plate inserted on the mounting seats. Inside the connecting plate, a resistor plate is provided. On the outside of the connecting plate, a conductive plate is also provided. On the conductive plate, connection holes for cooperating with the conductive posts are provided. On the top of the connecting plate, a wiring post is also provided through threaded connection. The connecting plate is inserted on the mounting seats through clamping blocks. Inside the mounting seats, mounting cavities are also provided. On the inner wall of the mounting cavities, a number of second telescopic rods are evenly arranged. At the end of the telescopic arms of the second telescopic rods, clamping blocks are provided. On the side wall of the clamping blocks, clamping grooves for cooperating with the clamping blocks are provided. Outside the second telescopic rods, second springs are also sleeved.

[0006] Preferably, on the inner wall of the connection holes, a number of first telescopic rods are evenly arranged. At the end of the telescopic arms of the first telescopic rods, contact plates for cooperating with the conductive posts are provided. On the side wall of the contact plates, guiding columns are provided. Inside the conductive plate, limiting holes are also provided. The guiding columns are slidably connected with the limiting holes.

[0007] Preferably, a first spring is further sleeved outside the first telescopic rod. One end of the first spring is connected to the contact plate, and the other end of the first spring is connected to the inner wall of the connection hole.

[0008] Preferably, a limiting plate is further arranged inside the limiting hole on the guiding column.

[0009] Preferably, a heat dissipation shell is further arranged on the top of the substrate. A plurality of heat dissipation fins are evenly arranged on the heat dissipation shell, and the resistance plate is in contact with the heat dissipation shell.

[0010] Preferably, one end of the second spring is connected to the clamping block, and the other end of the second spring is connected to the inner wall of the installation cavity.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: The shunt body is matched with the clamping groove on the mounting seat through the clamping block. Combined with the functions of the second telescopic rod and the second spring, rapid installation and disassembly are realized. Without using special tools, the operator only needs to simply press or lift to complete the disassembly and assembly of the shunt, which greatly improves the work efficiency. It is particularly suitable for occasions where the shunt needs to be frequently replaced or overhauled. At the same time, the first telescopic rod and the contact plate arranged on the inner wall of the connection hole, combined with the design of the guiding column and the limiting hole, ensure the stable contact between the conductive column and the contact plate. The addition of the first spring further enhances the contact pressure, reduces the contact resistance, and thus improves the measurement accuracy;

[0012] At the same time, under the action of the limiting plate, the falling-off of the contact plate is effectively prevented, further ensuring the stability of the contact. The heat dissipation shell and the heat dissipation fins arranged on the top of the substrate provide a good heat dissipation environment for the resistance plate, effectively reducing the working temperature of the resistance plate, reducing the measurement error and equipment damage caused by overheating, and thus prolonging the service life of the shunt. Through the quick-release mechanism and modular design, the shunt can flexibly adapt to the installation requirements in different application scenarios. Whether it is replacing resistance plates of different specifications or adjusting the installation position of the shunt, it can be quickly completed, improving the adaptability and flexibility of the equipment. Description of the Drawings

[0013] Figure 1 is the overall structural schematic diagram of the present utility model;

[0014] Figure 2 is the side view structural schematic diagram of the present utility model;

[0015] Figure 3 is the structural schematic diagram at the mounting seat of the present utility model;

[0016] Figure 4 is of the present utility model Figure 2 magnified view of the structure at A in;

[0017] Figure 5 For the present utility model Figure 3 The enlarged view of the structure at position B in

[0018] In the attached drawings, the list of components represented by each reference numeral is as follows: 1. Substrate; 2. Heat dissipation shell; 3. Heat dissipation fins; 4. Mounting seat; 5. Current plate; 6. Conductive column; 7. Connecting plate; 8. Conductive plate; 9. Resistance plate; 10. Connecting hole; 11. First telescopic rod; 12. Contact plate; 13. First spring; 14. Guide post; 15. Limiting plate; 16. Limiting hole; 17. Second telescopic rod; 18. Block; 19. Second spring; 20. Clamping block; 21. Card slot; 22. Terminal. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] The present utility model provides a technical solution: As Figures 1-5 shown, a current shunt includes a substrate 1. On both sides of the top of the substrate 1, current plates 5 are provided. On the top of the current plates 5, a number of conductive columns 6 are evenly arranged. On both sides of the top of the substrate 1 and inside the current plates 5, mounting seats 4 are also provided. A shunt body is inserted on the mounting seats 4. The shunt body includes a connecting plate 7 inserted on the mounting seats 4. Inside the connecting plate 7, a resistance plate 9 is provided. Outside the connecting plate 7, a conductive plate 8 is also provided. On the conductive plate 8, a connecting hole 10 for cooperating with the conductive column 6 is provided. On the top of the connecting plate 7, a terminal 22 is also provided through threaded connection. The connecting plate 7 is inserted on the mounting seats 4 through a clamping block 20.

[0021] The mounting seat 4 is also provided with a mounting cavity, and a plurality of second telescopic rods 17 are evenly provided on the inner wall of the mounting cavity. A card block 18 is provided at the end of the telescopic arm of the second telescopic rod 17, and a card slot 21 used in conjunction with the card block 18 is provided on the side wall of the card block 20. A second spring 19 is also sleeved on the outer side of the second telescopic rod 17, one end of the second spring 19 is connected to the card block 18, and the other end of the second spring 19 is connected to the inner wall of the mounting cavity. When it is necessary to install the diverter body, the staff aligns the card block 20 with the opening on the mounting seat 4, and then presses the diverter downward. At this time, under the action of the second telescopic rod 17, the card block 18 is driven to move outward. When the bottom of the card block 20 contacts the bottom of the opening, under the action of the second spring 19, the card block 18 is pushed to move, so that the card block 18 is inserted into the card slot 21, thereby completing the fixation of the diverter. If it is necessary to disassemble the diverter, the staff lifts the diverter upward to remove it, thereby realizing the quick installation and disassembly function of the diverter.

[0022] A plurality of first telescopic rods 11 are evenly arranged on the inner wall of the connecting hole 10, and a contact plate 12 used in conjunction with the conductive column 6 is arranged at the end of the telescopic arm of the first telescopic rod 11, and a guide column 14 is arranged on the side wall of the contact plate 12. A limiting hole 16 is also arranged inside the conductive plate 8, and the guide column 14 is slidably connected to the limiting hole 16. A limiting plate 15 is also arranged on the guide column 14 inside the limiting hole 16. Under the action of the limiting plate 15, not only the connection efficiency between the contact plate 12 and the conductive plate 8 is guaranteed, thereby ensuring the current transmission efficiency, but also the situation that the contact plate 12 falls off and affects the use efficiency of the shunt is reduced. At the same time, it can also meet the connection between the shunt and conductive columns 6 of different sizes, thereby improving the use efficiency of the shunt. A first spring 13 is also sleeved on the outer side of the first telescopic rod 11, and one end of the first spring 13 is connected to the contact plate 12, and the other end of the first spring 13 is connected to the inner wall of the connecting hole 10. Under the action of the first spring 13, the connection quality between the contact plate 12 and the conductive column 6 is guaranteed, thereby ensuring the use efficiency of the shunt.

[0023] A heat dissipation shell 2 is also provided on the top of the substrate 1, and a plurality of heat dissipation fins 3 are evenly arranged on the heat dissipation shell 2. The resistor plate 9 is in contact with the heat dissipation shell 2. At this time, under the action of the heat dissipation shell 2 and the heat dissipation fins 3, the heat generated by the shunt during operation can be discharged, thereby reducing the situation in which the use efficiency of the shunt is affected by excessive heat, thereby ensuring the use efficiency of the shunt.

[0024] Specifically, the surfaces of the first telescopic rod 11, the second telescopic rod 17, the first spring 13 and the second spring 19 are all provided with an insulating layer, so as to reduce the occurrence of a situation in which the conductivity thereof affects the efficiency of the shunt.

[0025] Working principle: When it is necessary to install the shunt body, the staff first aligns the clamping block 20 with the opening on the mounting seat 4, and then presses the shunt downward. At this time, under the action of the second telescopic rod 17, the clamping block 18 will move outward. When the bottom of the clamping block 20 contacts the bottom of the opening, the second spring 19 will push the clamping block 18 to move, so that the clamping block 18 is inserted into the clamping groove 21, thus completing the fixation of the shunt.

[0026] The conductive column 6 is arranged on the top of the current plate 5 and is used in cooperation with the connection hole 10 on the conductive plate 8. A number of first telescopic rods 11 are evenly arranged on the inner wall of the connection hole 10, and the end of the telescopic arm is provided with a contact plate 12. A guide post 14 is arranged on the side wall of the contact plate 12 and is slidably connected with the limiting hole 16 inside the conductive plate 8. A limiting plate 15 is also arranged on the guide post 14 inside the limiting hole 16, which ensures the connection efficiency between the contact plate 12 and the conductive plate 8 and reduces the situation of the contact plate 12 falling off. Under the action of the first spring 13, the contact plate 12 is kept in close contact with the conductive column 6, ensuring the current transmission efficiency.

[0027] The resistance plate 9 generates heat during operation. In order to effectively dissipate heat, the resistance plate 9 is in contact with the heat dissipation shell 2. A number of heat dissipation fins 3 are evenly arranged on the heat dissipation shell 2, which can conduct the heat generated during the operation of the shunt and reduce the situation that the use efficiency of the shunt is affected due to excessive heat of the shunt.

[0028] If it is necessary to disassemble the shunt, the staff only needs to lift the shunt upward, and the clamping block 18 will move outward under the action of the second telescopic rod 17 and the second spring 19, so as to disengage from the clamping groove 21. At this time, the shunt can be removed, realizing the function of rapid disassembly.

[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A current shunt, comprising a substrate (1), characterized in that: Current plates (5) are arranged on both sides of the top of the substrate (1), a plurality of conductive columns (6) are evenly arranged on the top of the current plates (5), and mounting seats (4) are also arranged on both sides of the top of the substrate (1) inside the current plates (5), and a shunt body is plugged and arranged on the mounting seats (4); The shunt body comprises a connecting plate (7) plugged into the mounting seat (4), a resistor plate (9) being arranged on the inner side of the connecting plate (7), a conductive plate (8) being arranged on the outer side of the connecting plate (7), a connecting hole (10) being arranged on the conductive plate (8) for use with the conductive column (6), a terminal (22) being arranged on the top of the connecting plate (7) via a threaded connection, and the connecting plate (7) being plugged into the mounting seat (4) via a clamping block (20); The mounting seat (4) is further provided with a mounting cavity inside, and a plurality of second telescopic rods (17) are evenly arranged on the inner wall of the mounting cavity. A clamping block (18) is arranged at the end of the telescopic arm of the second telescopic rod (17). A clamping groove (21) used in conjunction with the clamping block (18) is arranged on the side wall of the clamping block (20), and a second spring (19) is also sleeved on the outer side of the second telescopic rod (17).

2. A current splitter according to claim 1, characterized in that: A plurality of first telescopic rods (11) are evenly arranged on the inner wall of the connection hole (10); a contact plate (12) for use with the conductive column (6) is arranged at the end of the telescopic arm of the first telescopic rod (11); a guide column (14) is arranged on the side wall of the contact plate (12); a limit hole (16) is also arranged inside the conductive plate (8); and the guide column (14) is slidably connected to the limit hole (16).

3. A current splitter according to claim 2, characterized in that: A first spring (13) is also sleeved on the outside of the first telescopic rod (11), one end of the first spring (13) is connected to the contact plate (12), and the other end of the first spring (13) is connected to the inner wall of the connecting hole (10).

4. A current splitter according to claim 2, characterized in that: A limiting plate (15) is also provided inside the limiting hole (16) on the guide column (14).

5. The current splitter according to claim 1, characterized in that: A heat dissipation shell (2) is also provided on the top of the substrate (1), a plurality of heat dissipation fins (3) are evenly arranged on the heat dissipation shell (2), and the resistor plate (9) is in contact with the heat dissipation shell (2).

6. A current splitter according to claim 1, characterized in that: One end of the second spring (19) is connected to the clamping block (18), and the other end of the second spring (19) is connected to the inner wall of the installation cavity.

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