A flow splitter

Abstract

The application relates to the technical field of electronic measurement sampling, in particular to a shunt, which comprises a shunt main body, the shunt main body is provided with an inlet hole and an outlet hole, and the inlet hole and the outlet hole are respectively used for allowing an inlet post and an outlet post to pass through. The application allows the inlet post and the outlet post to directly pass through the holes, and then nuts are screwed to be fixedly connected, so that the problem of virtual welding caused by the traditional welding mode is avoided, the connection strength between the shunt and the inlet post / outlet post is significantly improved, and the stability and reliability of circuit transmission are enhanced.

Description

Technical Field

[0001] This application relates to the field of electronic measurement sampling, and in particular to a shunt plate. Background Technology

[0002] In modern electronic smart meters, the shunt is an indispensable core component. The function of the shunt is to convert large currents that are difficult to measure directly into small voltage signals that are easy to measure, providing accurate and reliable input to the metering chip of the meter, thereby ultimately achieving high-precision metering of electrical energy.

[0003] To shunt current into / out of the circuit, input and output terminals are connected to the shunt during manufacturing. Traditional shunts are typically connected to the input / output terminals by soldering, which can easily lead to cold solder joints and affect the stability of the circuit transmission. Utility Model Content

[0004] To improve the connection strength between the shunt plate and the inlet / outlet post, this application provides a shunt plate.

[0005] This application provides a current shunt chip, which adopts the following technical solution: A current splitter includes a current splitter body, on which an inlet hole and an outlet hole are provided, the inlet hole and the outlet hole being used for the inlet post and the outlet post to pass through, respectively.

[0006] By adopting the above technical solution, by opening inlet and outlet holes on the main body of the shunt plate, the inlet and outlet posts can be directly passed through the holes and then screwed on with nuts for fixed connection. This avoids the problem of poor soldering that may be caused by traditional welding methods, thereby significantly improving the connection strength between the shunt plate and the inlet / outlet posts, and enhancing the stability and reliability of circuit transmission.

[0007] Optionally, the shunt plate body includes two copper plates and a manganese copper plate located between the two copper plates. The copper plates and the manganese copper plate are electrically connected. The inlet hole and the outlet hole are opened on different copper plates. The manganese copper plate has a through hole for the wire to pass through.

[0008] By adopting the above technical solution, through holes are made on the manganese copper sheet to allow wires to pass through. When two wires are connected to the manganese copper sheet, one wire is directly connected to a pin on one side of the manganese copper sheet, and the other wire passes through the through hole and connects to a pin on the other side of the manganese copper sheet. The "inductive winding" technology is used to eliminate parasitic inductance. Furthermore, the wires are soldered to the pins of the manganese copper sheet after passing through the through holes. The through holes provide better mechanical fixation, reduce stress at the root of the wire pins, make the connection more robust, and improve vibration resistance. The presence of through holes increases the surface area, which helps with heat dissipation of the manganese copper sheet.

[0009] Optionally, it may also include an insulating element disposed within the through hole, the insulating element covering the hole wall of the through hole, the insulating element having a perforation for a wire to pass through.

[0010] By adopting the above technical solution, an insulating component is installed inside the through hole of the manganese copper sheet. The insulating component covers the hole wall and has perforations for the wire to pass through, which effectively prevents the wire from directly contacting the manganese copper sheet, minimizes the risk of short circuit, and improves the safety of use. At the same time, the insulating component protects the wire and reduces damage caused by friction or compression.

[0011] Optionally, the insulating element extends to the two opposite opening surfaces of the through hole.

[0012] By adopting the above technical solution, the insulating component extends to the two opposite opening surfaces of the through hole, fully covering the edge area of ​​the through hole, further enhancing the insulation effect, preventing the wire from contacting the metal edge when passing through the through hole, improving the integrity and reliability of the insulation, and is especially suitable for applications in high-density or vibration environments.

[0013] Optionally, the insulating element is made of a material with high thermal conductivity, and the insulating element covers the two opposite opening surfaces of the through hole.

[0014] By adopting the above technical solution, the insulating component uses a high thermal conductivity material and covers the two-phase back opening surface of the through hole. This not only maintains good insulation performance, but also efficiently conducts and dissipates the heat generated when the shunt is working, preventing local overheating, improving heat dissipation efficiency, and helping to maintain the long-term stable operation of the shunt.

[0015] Optionally, the insulating component includes a first petal and a second petal, the perforation passes through the first petal and the second petal, the first petal and the second petal respectively abut against the two opposite opening surfaces of the perforation, and both the first petal and the second petal are provided with a fixing structure, and the first petal and the second petal are fixedly connected by the fixing structure.

[0016] By adopting the above technical solution, the insulating component adopts a split design of the first and second petal bodies, which respectively fit into the two opening surfaces of the through hole and are connected by a fixing structure, making the installation and disassembly of the insulating component more convenient. The fixing structure ensures a firm connection between the two petal bodies, preventing loosening caused by vibration or external force, and improving the stability and maintenance convenience of the overall structure.

[0017] Optionally, the fixing structure includes a locking block and a slot for inserting the locking block. Both the first and second petal bodies include an insertion portion for inserting into a through hole. The locking block is disposed on the insertion portion of the first petal body and / or the insertion portion of the second petal body, and the slot is formed on the insertion portion of the second petal body and / or the insertion portion of the first petal body.

[0018] By adopting the above technical solution, the fixing structure uses a combination of locking blocks and slots. If the locking block is located on the second petal and the slot is located on the first petal, quick fixing is achieved through locking. If both the first and second petals have locking blocks and slots, the locking blocks on the first petal engage with the slots on the second petal, and the slots on the first petal engage with the locking blocks on the second petal. This makes the structures of the first and second petals identical, allowing them to be processed using a unified mold, reducing processing costs. Quick fixing through locking simplifies the assembly process, improves installation efficiency, and the locking structure provides good locking force, ensuring the stability of the insulating component within the through-hole and preventing displacement or detachment.

[0019] Optionally, the fixing structure includes a locking block and a locking groove into which the locking block is inserted. The first petal body includes a protruding part for protruding through a through hole. The locking block is disposed on the protruding part. The second petal body has a slot for the protruding part to be inserted into. The locking groove is formed on the groove wall of the slot.

[0020] By adopting the above technical solution, the fixing structure uses a locking mechanism of locking blocks and locking slots. The protruding part of the first petal body passes through the through hole and is inserted into the slot of the second petal body. The locking block and the locking slot cooperate to form a firm connection. This design enhances the tensile strength and stability of the insulating parts, and is especially suitable for occasions that need to withstand large external forces or vibrations, thus improving the durability of the equipment. In addition, the protruding part of the first petal body needs to pass through the through hole to connect with the second petal body, which makes it easier to determine whether the first petal body and the second petal body are fixed, ensuring that the two are connected.

[0021] Optionally, the lock block has an inclined abutment surface, and the distance between the abutment surface and the opening surface of the lock groove decreases along the direction in which the protruding part is inserted into the slot.

[0022] By adopting the above technical solution, an inclined contact surface is provided on the lock block, which allows the lock block to be smoothly guided and gradually locked during the process of being inserted into the lock groove, thereby realizing the self-locking function, reducing the installation difficulty, improving the tightness and reliability of the connection, and at the same time, the inclined surface helps to reduce wear and extend the service life.

[0023] Optionally, the slot penetrates the surface of the second lobe away from the manganese copper sheet, and after the first lobe and the second lobe are fixed, the end face of the protruding part is flush with the surface of the second lobe away from the manganese copper sheet.

[0024] By adopting the above technical solution, the slot penetrates the surface of the second lobe away from the manganese copper sheet, making the insertion operation of the protruding part more intuitive and convenient, facilitating alignment and inspection during assembly, improving production efficiency and product quality consistency. At the same time, the through-hole design is conducive to heat dissipation and impurity discharge, enhancing applicability. Furthermore, the end face of the protruding part is flush with the surface of the second lobe away from the manganese copper sheet, making the surface of the insulating part flat, minimizing hooking and interference with other structures, and preventing dirt and grime from accumulating.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. It avoids the problem of poor soldering that may be caused by traditional soldering methods, thereby significantly improving the connection strength between the shunt plate and the input / output post, and enhancing the stability and reliability of circuit transmission; 2. The insulating components not only maintain good insulation performance, but also efficiently conduct and dissipate the heat generated by the shunt during operation, preventing local overheating, improving heat dissipation efficiency, and helping to maintain the long-term stable operation of the shunt. 3. The insulation component adopts a split design of the first and second petal bodies, which are connected by a fixed structure, making the installation and disassembly of the insulation component more convenient. The fixed structure ensures a firm connection between the two petal bodies, preventing loosening due to vibration or external force, and improving the stability and maintenance convenience of the overall structure. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application.

[0027] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of this application.

[0028] Figure 3 This is a cross-sectional view of Embodiment 2 of this application along the arrangement direction of the first and second petal bodies.

[0029] Figure 4 This is a schematic diagram of the structure of the first lobe in Embodiment 2 of this application.

[0030] Figure 5 This is a structural schematic diagram of Embodiment 3 of this application.

[0031] Figure 6 This is an exploded view of Embodiment 3 of this application.

[0032] Figure 7 This is a cross-sectional view of Embodiment 3 of this application along the arrangement direction of the first and second petal bodies.

[0033] Explanation of reference numerals in the attached drawings: 1. Diverter body; 11. Inlet hole; 12. Outlet hole; 13. Copper sheet; 14. Manganese copper sheet; 141. Through hole; 142. Pin; 2. Insulating component; 21. Through hole; 22. First lobe body; 221. Insertion part; 222. Outlet part; 23. Second lobe body; 231. Slot; 3. Fixing structure; 31. Locking block; 32. Locking groove; 33. Locking block; 331. Contact surface; 34. Locking groove. Detailed Implementation

[0034] The following combination Figures 1-7 This application will be described in further detail.

[0035] Example 1: Embodiment 1 of this application discloses a shunt chip. (Refer to...) Figure 1 The shunt plate includes a shunt plate body 1, on which an inlet hole 11 and an outlet hole 12 are provided. The inlet and outlet posts pass through the inlet hole 11 and outlet hole 12 on the shunt plate body 1, respectively, and are fixed with nuts. This connection method avoids the problem of poor soldering that may occur with traditional welding, improves the connection strength, and enhances the stability of circuit transmission. Because the fixing method using holes and nuts ensures that the inlet and outlet posts are tightly connected to the shunt plate body 1, the possibility of poor contact is reduced.

[0036] Reference Figure 1 The shunt plate body 1 includes two copper sheets 13 and a manganese-copper sheet 14 located between the two copper sheets 13. The copper sheets 13 are generally made of high-purity copper, which has good conductivity and ductility. Of course, other copper alloys such as brass can also be used, and their conductivity can also meet the requirements. The manganese-copper sheet 14 is made of manganese-copper, which has a low temperature coefficient, ensuring the stable performance of the shunt plate under different temperature environments. The copper sheets 13 and the manganese-copper sheet 14 are welded and fixed to achieve a conductive connection. In other embodiments, the copper sheets 13 and the manganese-copper sheet 14 can be connected together by pressing.

[0037] Reference Figure 1 The inlet hole 11 and the outlet hole 12 are opened on different copper plates 13. The inlet hole 11 and the outlet hole 12 are usually circular, but they can also be square or other shapes, as long as the inlet and outlet pins can pass through smoothly.

[0038] Reference Figure 1 Two pins 142 are integrally formed on the manganese bronze sheet 14. The two pins 142 are arranged in a direction perpendicular to the arrangement direction of the copper sheet 13 and the manganese bronze sheet 14 and perpendicular to the thickness direction of the manganese bronze sheet 14. The two pins 142 are used to weld and fix two wires respectively. A through hole 141 is provided on the manganese bronze sheet 14 for one of the wires to pass through.

[0039] When the two wires are connected to the manganese bronze sheet 14, one wire is directly connected to pin 142 on one side of the manganese bronze sheet 14, and the other wire passes through the through-hole 141 and connects to pin 142 on the other side of the manganese bronze sheet 14. This "inductive winding" technology eliminates parasitic inductance. The wire is soldered to pin 142 of the manganese bronze sheet 14 after passing through the through-hole 141. The through-hole 141 provides better mechanical fixation, reduces stress at the root of the wire pin 142, makes the connection more robust, and improves vibration resistance. Furthermore, the presence of the through-hole 141 increases the surface area, which helps with heat dissipation of the manganese bronze sheet 14.

[0040] Reference Figure 1 The shunt also includes an insulating component 2 fixedly installed within the through hole 141. The insulating component 2 covers the wall of the through hole 141, and has through holes 21 for wires to pass through. The insulating component 2 is generally made of plastic, such as polyvinyl chloride or polyethylene, which have good insulation properties. The insulating component 2 is fixed to the wall of the through hole 141 by adhesive bonding, or it can be injection molded onto the wall of the through hole 141. The function of the insulating component 2 is to prevent direct contact between the wires and the manganese copper sheet 14, avoiding the risk of short circuits. The shape of the insulating component 2 is adapted to the through hole 141, fitting tightly against the wall of the through hole 141.

[0041] The implementation principle of a shunt plate in Embodiment 1 of this application is as follows: During installation, the inlet post passes through the inlet hole 11, and the outlet post passes through the outlet hole 12. Then, nuts are tightened onto the exposed parts of the inlet and outlet posts to fix them to the shunt plate body 1. When the two wires are connected to the manganese bronze sheet 14, one wire is directly soldered to the pin 142 on one side of the manganese bronze sheet 14, and the other wire passes through the through hole 141 and is soldered to the pin 142 on the other side of the manganese bronze sheet 14.

[0042] Example 2: Reference Figure 2 and Figure 3 The difference between this embodiment and Embodiment 1 is that the insulating member 2 extends to the two opposite opening surfaces of the through hole 141, and the insulating member 2 covers the two opposite opening surfaces of the through hole 141. In other embodiments, the insulating member 2 may partially block the two opposite opening surfaces of the through hole 141.

[0043] Reference Figure 2 and Figure 3The insulating component 2 is made of a highly thermally conductive material, such as thermally conductive silicone. The insulating component 2 includes a first petal 22 and a second petal 23. The first petal 22 and the second petal 23 respectively abut against the two opposing opening surfaces of the through hole 141. The through hole 21 penetrates the first petal 22 and the second petal 23 along their arrangement direction. Both the first petal 22 and the second petal 23 are provided with a fixing structure 3, which securely connects them. This split design makes the installation and disassembly of the insulating component 2 more convenient. The fixing structure 3 ensures a firm connection between the two petals, preventing loosening due to vibration or external force, thus improving the overall structural stability and maintenance convenience.

[0044] Reference Figure 3 and Figure 4 The fixing structure 3 includes a locking block 31 and a locking slot 32 for inserting the locking block 31. The first petal body 22 and the second petal body 23 have the same structure. Both the first petal body 22 and the second petal body 23 include an insertion portion 221 for inserting into the through hole 141, and the through hole 21 is formed on the insertion portion 221. There are two locking blocks 31, which are integrally formed on the surfaces opposite to the insertion portions 221 of the first petal body 22 and the second petal body 23. Similarly, there are also two locking slots 32, which are formed on the surfaces opposite to the insertion portions 221 of the first petal body 22 and the second petal body 23, respectively. The locking blocks 31 on the first petal body 22 correspond to the locking slots 32 on the second petal body 23, and the locking slots 32 on the first petal body 22 correspond to the locking blocks 31 on the second petal body 23. The engagement of the locking block 31 and the locking slot 32 enables quick fixation through snap-fit, simplifying the assembly process and improving installation efficiency. At the same time, the snap-fit ​​structure has good locking force, ensuring that the insulating part 2 is stably positioned within the through hole 141, preventing displacement or detachment.

[0045] In other embodiments, multiple locking blocks 31 may be provided, and all multiple locking blocks 31 are integrally formed on the first petal body 22. Correspondingly, multiple locking slots 32 are also provided, and all multiple locking slots 32 are formed on the second petal body 23.

[0046] Reference Figure 3 and Figure 4 The locking block 31 is an incomplete spherical protrusion, and the structure of the locking slot 32 is adapted to the structure of the locking block 31. In other embodiments, the shapes of the locking block 31 and the locking slot 32 can be "T" shaped, trapezoidal, etc., as long as the locking function can be realized.

[0047] In other embodiments, the first petal 22 and the second petal 23 can be injection molded onto the manganese copper sheet 14, thus eliminating the need for the fixing structure 3.

[0048] Example 3: Reference Figure 5 and Figure 6 The difference between this embodiment and Embodiment 1 is that the insulating member 2 extends to the two opposite opening surfaces of the through hole 141, and the insulating member 2 covers the two opposite opening surfaces of the through hole 141. In other embodiments, the insulating member 2 may partially block the two opposite opening surfaces of the through hole 141.

[0049] Reference Figure 5 and Figure 6 The insulating component 2 is made of a highly thermally conductive material, such as thermally conductive silicone. The insulating component 2 includes a first petal 22 and a second petal 23. The first petal 22 and the second petal 23 respectively abut against the two opposing opening surfaces of the through hole 141. The through hole 21 penetrates the first petal 22 and the second petal 23 along their arrangement direction. Both the first petal 22 and the second petal 23 are provided with a fixing structure 3, which securely connects them. This split design makes the installation and disassembly of the insulating component 2 more convenient. The fixing structure 3 ensures a firm connection between the two petals, preventing loosening due to vibration or external force, thus improving the overall structural stability and maintenance convenience.

[0050] Reference Figure 6 and Figure 7 The fixing structure 3 includes a locking block 33 and a locking groove 34 for inserting the locking block 33. The first petal body 22 includes a protruding part 222 for inserting into and exiting through the through hole 141, and the through hole 21 is formed on the protruding part 222. The locking block 33 is integrally formed on the circumferential side wall of the protruding part 222. The second petal body 23 has a slot 231 for inserting the protruding part 222, and the locking groove 34 is formed on the groove wall of the slot 231.

[0051] Reference Figure 6 and Figure 7 The locking block 33 has an inclined contact surface 331, and the distance between the contact surface 331 and the opening surface of the locking groove 34 decreases along the direction in which the protruding part 222 is inserted into the slot 231. This allows the locking block 33 to be smoothly guided and gradually locked during insertion into the locking groove 34, achieving a self-locking function, reducing installation difficulty, improving the tightness and reliability of the connection, and at the same time, the inclined surface helps to reduce wear and extend service life.

[0052] Reference Figure 6 and Figure 7The slot 231 penetrates the surface of the second lobe 23 away from the manganese bronze sheet 14. After the first lobe 22 and the second lobe 23 are fixed, the end face of the protruding part 222 is flush with the surface of the second lobe 23 away from the manganese bronze sheet 14. This makes the insertion operation of the protruding part 222 more intuitive and convenient, facilitates alignment and inspection during assembly, improves production efficiency and product quality consistency, and the through-hole design facilitates heat dissipation and impurity discharge, enhancing applicability.

[0053] In other embodiments, the first petal 22 and the second petal 23 can be injection molded onto the manganese copper sheet 14, thus eliminating the need for the fixing structure 3.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A current shunt, characterized in that: It includes a splitter body (1), on which an inlet hole (11) and an outlet hole (12) are provided. The inlet hole (11) and the outlet hole (12) are respectively used for the inlet post and the outlet post to pass through.

2. A shunt plate according to claim 1, characterized in that: The main body (1) of the shunt plate includes two copper plates (13) and a manganese copper plate (14) located between the two copper plates (13). The copper plates (13) and the manganese copper plate (14) are electrically connected. The inlet hole (11) and the outlet hole (12) are opened on different copper plates (13). The manganese copper plate (14) is provided with a through hole (141) for the wire to pass through.

3. A shunt plate according to claim 2, characterized in that: It also includes an insulating element (2) disposed in the through hole (141), the insulating element (2) covering the hole wall of the through hole (141), and the insulating element (2) having a through hole (21) for the wire to pass through.

4. A current shunt according to claim 3, characterized in that: The insulating element (2) extends to the two opposite opening surfaces of the through hole (141).

5. A shunt plate according to claim 4, characterized in that: The insulating component (2) is made of a high thermal conductivity material and the insulating component (2) covers the two back opening surfaces of the through hole (141).

6. A shunt plate according to claim 5, characterized in that: The insulating component (2) includes a first petal body (22) and a second petal body (23). The perforation (21) passes through the first petal body (22) and the second petal body (23). The first petal body (22) and the second petal body (23) respectively fit and abut against the two opposite opening surfaces of the through hole (141). The first petal body (22) and the second petal body (23) are each provided with a fixing structure (3). The first petal body (22) and the second petal body (23) are fixedly connected by the fixing structure (3).

7. A current shunt according to claim 6, characterized in that: The fixing structure (3) includes a locking block (31) and a slot (32) for inserting the locking block (31). The first petal body (22) and the second petal body (23) both include an insertion part (221) for inserting into the through hole (141). The locking block (31) is provided on the insertion part (221) of the first petal body (22) and / or the insertion part (221) of the second petal body (23). The slot (32) is opened on the insertion part (221) of the second petal body (22) and / or the insertion part (221) of the first petal body (23).

8. A shunt plate according to claim 6, characterized in that: The fixing structure (3) includes a locking block (33) and a locking groove (34) for the locking block (33) to be inserted. The first petal body (22) includes a protruding part (222) for protruding through a through hole (141). The locking block (33) is disposed on the protruding part (222). The second petal body (23) has a slot (231) for the protruding part (222) to be inserted. The locking groove (34) is formed on the groove wall of the slot (231).

9. A shunt plate according to claim 8, characterized in that: The locking block (33) has an inclined contact surface (331) formed on it, and the distance between the contact surface (331) and the opening surface of the locking groove (34) decreases along the direction of the insertion of the protruding part (222) into the slot (231).

10. A shunt plate according to claim 8, characterized in that: The slot (231) penetrates the surface of the second petal (23) away from the manganese copper sheet (14). After the first petal (22) and the second petal (23) are fixed, the end face of the protruding part (222) is flush with the surface of the second petal (23) away from the manganese copper sheet (14).

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