Hybrid mounted shunt and sampling circuit structure

Abstract

The utility model relates to the technical field of resistor processing, and relates to a shunt and sampling circuit structure in hybrid installation. According to the utility model, the first electrode is provided with the connecting hole, and the riveting column on the second electrode is used for conducting current, so that the first electrode of the shunt can be fixed on a current row only by screwing a screw, and the structure and the use are more flexible and convenient; the position of the circuit board is positioned through the second positioning piece and the first positioning piece, the installation is simple, automatic guiding and positioning can be realized only through plug-in installation, and the consistency of the installation positions of the diverter and the bonding pad can be ensured, so that the consistency and the reliability of the product during use are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of resistor processing, and relates to a mixed-installation shunt and a sampling circuit structure. Background Art

[0002] Existing shunt resistors generally consist of two parts: a resistor body and an electrode. When installing, the shunt is generally placed flat on a circuit board as a whole, and the electrodes at both ends of the shunt are connected to an external current bus with bolts, and the voltage value is collected through the current of the pads on the circuit board. When in use, the current is conducted through the left and right electrodes, and the voltage value is collected through the current of the pads on the circuit board, thereby realizing real-time monitoring and detection of the current size.

[0003] When installing the existing shunt resistor, the circuit board and the shunt cannot be fixed and positioned, which may cause the pad sampling point on the circuit board to shift, resulting in poor consistency or performance during use; at the same time, when the existing shunt is connected to the external current bus, the installation position needs to be kept horizontal and flush, which limits its use and requires two screw tightening operations, which is a cumbersome process. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a mixed installation shunt and sampling circuit structure which can fix the shunt on the current bus by tightening only one screw, is more flexible and convenient in structure and use, and can ensure that the installation position of the shunt is consistent with that of the pad.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model to solve its technical problems is:

[0006] A hybrid-installed flow divider, comprising:

[0007] A resistor body, with connection terminals provided at both ends;

[0008] A first electrode connected to a connection end of the resistor, a connection hole is provided on the first electrode, a first positioning member is provided on the first electrode, and the first positioning member is used for positioning with the circuit board;

[0009] The second electrode is connected to the other connection end of the resistor, the second electrode is provided with a rivet hole, the rivet hole is provided with a rivet column, the second electrode is provided with a second positioning piece, and the second positioning piece is used for positioning with the circuit board.

[0010] In one embodiment of the present invention, the first electrode and the second electrode both have a connection surface, the connection surface is connected to the connection end of the resistor, and the projection area of ​​the resistor on the connection surface is 1 / 2-2 / 3 of the connection surface.

[0011] In one embodiment of the utility model, the first positioning member is a positioning column, the positioning column is arranged opposite to the connecting hole, the positioning column is vertically arranged on the first electrode, the positioning column and the first electrode are connected by any one of welding, riveting or stamping, and the height of the positioning column is greater than the thickness of the circuit board.

[0012] In an embodiment of the present invention, the first positioning member includes two positioning posts, which are symmetrically arranged on both sides of the connecting hole, and the distance between the two positioning posts is greater than the length of the resistor.

[0013] In one embodiment of the utility model, the second positioning member is a positioning rod, which is vertically arranged on the second electrode. The positioning rod is connected to the second electrode by any one of welding, riveting or stamping, and the positioning rod is arranged parallel to the riveted column.

[0014] In one embodiment of the utility model, the positioning column or the positioning rod is in the shape of any one of a cylinder, a prism, a pyramid, a cone or a truncated cone, and an anti-slip tooth surface is provided on the side surface of the positioning column or the positioning rod.

[0015] In one embodiment of the utility model, a plurality of limit markings are arranged on the riveting column, and a guide cone head is arranged at the free end of the riveting column for facilitating assembly.

[0016] In one embodiment of the present invention, the first electrode, the second electrode and the resistor are all sheet-like structures, the electrode and the resistor are integrated by electron beam welding, and the first electrode and the second electrode are made of copper or brass.

[0017] The utility model also includes a sampling circuit structure, which includes a circuit board, a shunt, and a plug. The shunt is the shunt described above. Two mounting holes are provided on the circuit board. The rivet column passes through one of the two mounting holes and is connected to the plug. The other mounting hole of the two mounting holes is arranged opposite to the connecting hole. A plurality of positioning holes are provided on the circuit board. The first positioning member and the second positioning member are passed through the positioning holes.

[0018] In one embodiment of the utility model, the height of the first positioning member and the second positioning member are both greater than the thickness of the circuit board; the thickness of the first electrode and the second electrode are both greater than the thickness of the resistor, and the bottom surface of the resistor and the bottom surface of the electrode are on the same plane, so that an installation gap is formed between the resistor and the circuit board.

[0019] Beneficial effects of the utility model:

[0020] The utility model provides a connection hole on the first electrode, and a riveted column on the second electrode conducts current, so that the first electrode of the shunt can be fixed on the current bus by tightening one screw, which is more flexible and convenient in structure and use; the second positioning member is used to position the first positioning member and the circuit board, and the installation is simple, and automatic guidance and positioning can be achieved by simply plugging and installing, which can ensure that the installation position of the shunt is consistent with that of the pad, thereby ensuring the consistency and reliability of the product when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a mixed-installation diverter of the utility model.

[0022] Figure 2 It is a schematic diagram of the sampling circuit structure of the utility model.

[0023] Figure 3 It is an existing shunt resistor structure.

[0024] Explanation of the numbers in the figure: 1. resistor body; 11. connecting surface; 12. installation gap; 2. first electrode; 21. connecting hole; 22. first positioning member; 23. positioning column; 3. second electrode; 31. rivet hole; 32. rivet column; 33. guide cone head; 34. positioning rod; 4. circuit board; 5. pin; 100. existing shunt resistor; 101. existing circuit board structure. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0026] Reference Figure 1 As shown, a hybrid installed splitter includes:

[0027] The resistor 1 has connection terminals at both ends;

[0028] A first electrode 2 connected to a connection end of the resistor 1, a connection hole 21 is provided on the first electrode 2, and a first positioning member 22 is provided on the first electrode 2, and the first positioning member 22 is used for positioning with the circuit board 4;

[0029] The second electrode 3 is connected to the other connection end of the resistor 1 , and a rivet hole 31 is provided on the second electrode 3 , and a rivet column 32 is provided on the rivet hole 31 . A second positioning piece is provided on the second electrode 3 , and the second positioning piece is used for positioning with the circuit board 4 .

[0030] The utility model has a connecting hole 21 on the first electrode 2, and a riveted column 32 on the second electrode 3 conducts current, so that the first electrode 2 of the shunt can be fixed on the current bus by tightening one screw, which is more flexible and convenient in structure and use; the second positioning member and the first positioning member 22 are used to position the circuit board 4, and the installation is simple, and automatic guidance and positioning can be achieved by simply plugging and installing, which can ensure that the installation position of the shunt is consistent with that of the pad, thereby ensuring the consistency and reliability of the product when in use.

[0031] In one embodiment of the present invention, the first electrode 2 and the second electrode 3 both have a connection surface 11, the connection surface 11 is connected to the connection end of the resistor 1, and the projection area of ​​the resistor 1 on the connection surface 11 is 1 / 2-2 / 3 of the connection surface 11.

[0032] Specifically, the projection area of ​​the resistor 1 on the connecting surface 11 is 1 / 2-2 / 3 of the connecting surface 11, which can ensure the connection stability between the resistor 1 and the first electrode 2 and the second electrode 3, increase the heat dissipation area of ​​the shunt, and greatly improve the heat dissipation performance of the shunt resistor.

[0033] In one embodiment of the utility model, the first positioning member 22 is a positioning column 23, the positioning column 23 is arranged opposite to the connecting hole 21, the positioning column 23 is vertically arranged on the first electrode 2, the positioning column 23 and the first electrode 2 are connected by any one of welding, riveting or stamping, and the height of the positioning column 23 is greater than the thickness of the circuit board 4.

[0034] Specifically, the height of the positioning column 23 and the positioning rod 34 is greater than the thickness of the circuit board 4. The positioning column 23 and the positioning rod 34 pass through the circuit board 4, and can be conveniently soldered and fixed to the circuit board 4 by wave soldering.

[0035] In one embodiment of the utility model, the first positioning member 22 includes two positioning columns 23, and the two positioning columns 23 are symmetrically arranged on both sides of the connecting hole 21. The distance between the two positioning columns 23 is greater than the length of the resistor body 1, which can greatly ensure the assembly stability of the shunt resistor, thereby ensuring the consistency and reliability of the product during use.

[0036] In one embodiment of the utility model, the second positioning member is a positioning rod 34, and the positioning rod 34 is vertically arranged on the second electrode 3. The positioning rod 34 is connected to the second electrode 3 by any one of welding, riveting or stamping. The positioning rod 34 is arranged parallel to the riveted column 32.

[0037] In one embodiment of the utility model, the shape of the positioning column 23 or the positioning rod 34 is any one of a cylinder, a prism, a pyramid, a cone or a truncated cone, and the side of the positioning column 23 or the positioning rod 34 is provided with an anti-slip tooth surface, which can increase the soldering area and improve the connection stability with the circuit board 4.

[0038] In one embodiment of the utility model, a plurality of limit markings are arranged on the riveted column 32, which can provide a certain resistance and improve the connection stability with the latch, and a guide cone head 33 is arranged at the free end of the riveted column 32 for easy assembly.

[0039] Specifically, the free end of the rivet column 32 is provided with a guide cone head 33 for easy assembly, so that the rivet column 32 can be quickly passed through the positioning hole and connected with the pin 5, with good reliability; a plurality of limit marks are provided on the rivet column 32, and it can be assembled with different circuit boards 4. According to the circuit boards 4 of different thicknesses, it can be directly visually inspected whether the assembly position meets the standard, which is simple and practical.

[0040] In one embodiment of the present invention, the first electrode 2, the second electrode 3, and the resistor 1 are all sheet structures, the electrodes and the resistor 1 are integrated by electron beam welding, and the first electrode 2 and the second electrode 3 are made of copper or brass.

[0041] Specifically, the first electrode 2, the second electrode 3, and the resistor body 1 are all sheet structures, so that a stamping die can be used to quickly punch out the splicing strip, which has high production efficiency. During production and processing, the electrode material and the resistor body 1 material are first welded to form a splicing strip, and then punched out to form a shunt shape. After surface treatment (such as electroplating or water washing and polishing), the riveted column 32 is riveted to complete the processing, which can achieve mass production and ensure product consistency and stability.

[0042] Reference Figure 2 As shown, the utility model also includes a sampling circuit structure, which includes a circuit board 4, a shunt, and a plug 5. The shunt is the shunt described above. Two mounting holes are provided on the circuit board 4. The rivet column 32 passes through one of the two mounting holes and is connected to the plug 5. The other mounting hole of the two mounting holes is arranged opposite to the connecting hole 21. A plurality of positioning holes are provided on the circuit board 4. The first positioning member 22 and the second positioning member are passed through the positioning holes.

[0043] In one embodiment of the utility model, the height of the first positioning member 22 and the second positioning member are both greater than the thickness of the circuit board 4. On the back of the circuit board 4, the positioning column 23 and the positioning rod 34 pass through the circuit board 4, which can be conveniently fixed to the circuit board 4 by wave soldering.

[0044] The thickness of the first electrode 2 and the second electrode 3 are both greater than the thickness of the resistor 1 , and the bottom surface of the resistor 1 and the bottom surface of the electrodes are on the same plane, so that a mounting gap 12 is formed between the resistor 1 and the circuit board 4 .

[0045] Since the circuit board 4 is welded to the shunt, the heat generated by the shunt resistor during use can be discharged from the installation gap 12, which is convenient for timely heat dissipation when the resistor is made into a larger size. The installation gap 12 can effectively increase the heat dissipation rate of the sampling circuit structure and greatly improve the heat dissipation performance of the shunt resistor.

[0046] Usage process

[0047] The shunt resistor patch is inserted into the circuit board 4, wherein the positioning column 23 and the positioning rod 34 are inserted into the corresponding positioning holes of the circuit board 4 to play a positioning role; during welding, the surface of the shunt is connected to the pad of the circuit board 4 by reflow soldering, and at the same time, on the back of the circuit board 4, the positioning column 23 and the positioning rod 34 are soldered and fixed to the circuit board 4 by wave soldering; one of the two mounting holes is passed through and connected to the pin 5 to play the role of conducting current; the connecting hole 21 is connected to the current bus by a bolt; when in use, the current flows through the shunt through the current bus and the pin 5, and the voltage value is collected by the circuit on the circuit board 4, so that the magnitude of the current flowing can be detected in real time, thereby detecting the current value.

[0048] The above-described embodiments are only preferred embodiments for fully illustrating the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or changes made by technicians in the technical field on the basis of the present utility model are all within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the claims.

Claims

1. A mixed installation splitter, characterized in that: include: A resistor body, with connection terminals provided at both ends; A first electrode connected to a connection end of the resistor, a connection hole is provided on the first electrode, a first positioning member is provided on the first electrode, and the first positioning member is used for positioning with the circuit board; The second electrode is connected to the other connection end of the resistor, the second electrode is provided with a rivet hole, the rivet hole is provided with a rivet column, the second electrode is provided with a second positioning piece, and the second positioning piece is used for positioning with the circuit board.

2. The hybrid-mounted splitter according to claim 1, characterized in that: The first electrode and the second electrode both have a connection surface, the connection surface is connected to the connection end of the resistor, and the projection area of ​​the resistor on the connection surface is 1 / 2-2 / 3 of the connection surface.

3. The hybrid-mounted splitter according to claim 1, characterized in that: The first positioning member is a positioning column, which is arranged opposite to the connecting hole. The positioning column is vertically arranged on the first electrode. The positioning column and the first electrode are connected by any one of welding, riveting or stamping. The height of the positioning column is greater than the thickness of the circuit board.

4. The hybrid-mounted splitter according to claim 3, characterized in that: The first positioning member includes two positioning posts, which are symmetrically arranged on both sides of the connecting hole, and the distance between the two positioning posts is greater than the length of the resistor body.

5. The hybrid-mounted splitter according to claim 3, characterized in that: The second positioning member is a positioning rod, which is vertically arranged on the second electrode. The positioning rod is connected to the second electrode by any one of welding, riveting or stamping, and the positioning rod is arranged parallel to the riveted column.

6. The hybrid mounted flow divider according to claim 5, characterized in that: The positioning column or the positioning rod is in the shape of any one of a cylinder, a prism, a pyramid, a cone or a truncated cone, and an anti-slip tooth surface is arranged on the side surface of the positioning column or the positioning rod.

7. The hybrid mounted flow divider according to claim 1, characterized in that: The riveting column is provided with a plurality of limit markings, and the free end of the riveting column is provided with a guide cone head for easy assembly.

8. The hybrid mounted flow divider according to claim 1, characterized in that: The first electrode, the second electrode and the resistor are all sheet-shaped structures. The electrode and the resistor are welded into one body by electron beam welding. The first electrode and the second electrode are made of copper or brass.

9. A sampling circuit structure, characterized in that: The sampling circuit structure includes a circuit board, a shunt, and a plug. The shunt is the shunt described in any one of claims 1 to 8. Two mounting holes are provided on the circuit board. The rivet column passes through one of the two mounting holes and is connected to the plug. The other mounting hole of the two mounting holes is arranged opposite to the connecting hole. A plurality of positioning holes are provided on the circuit board. The first positioning member and the second positioning member are passed through the positioning holes.

10. The hybrid mounted flow divider according to claim 9, characterized in that: The heights of the first positioning member and the second positioning member are both greater than the thickness of the circuit board; the thicknesses of the first electrode and the second electrode are both greater than the thickness of the resistor, and the bottom surface of the resistor and the bottom surface of the electrode are on the same plane, so that an installation gap is formed between the resistor and the circuit board.

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