Flow divider

Abstract

The utility model discloses a shunt which comprises a resistor body, two ends of the resistor body are provided with electrode bodies, the end parts of the electrode bodies are recessed downwards to form groove bodies, L-shaped connecting sheets are arranged in the groove bodies, at least parts of the L-shaped connecting sheets extend out of the groove bodies to form extension parts, the extension parts are connected with pins, and the pins are connected with the resistor body. The end part of the resistor body tightly presses the L-shaped connecting sheet in the groove body, and a PCB (Printed Circuit Board) is fixed on the pins, so that the lower end surface of the PCB is attached to the extension part. The shunt resistor solves the problems that in the manufacturing process of a shunt resistor in the prior art, welding operation needs to be carried out on the resistor, an electrode and a pin assembly for many times, the pins need to be bent, the number of operation steps is large, machining is tedious, a PCB is supported through the bent pins, and the structure is unstable.

Description

TECHNICAL FIELD

[0001] The utility model relates to a resistance element, and particularly to a shunt. BACKGROUND

[0002] The resistance element of the shunt is a precision resistance for measuring large current, which is generally composed of a resistance body in the middle and electrodes connected at both ends. For example, the Chinese patent with the patent number 202410277342.1 provides a shunt resistance with a double-channel sampling structure and a manufacturing method thereof; the shunt resistance comprises a shunt resistance body, shunt electrodes located on both sides of the shunt resistance body, a left pin assembly and a right pin assembly riveted on the two shunt electrodes respectively. The left pin assembly comprises at least two left pins, and the right pin assembly comprises at least two right pins; a left protruding stop structure is formed on the left pin, and a right protruding stop structure is formed on the right pin. In the left pin, a left protruding stop structure is formed, and a right protruding stop structure is formed on the right pin. The shunt resistance in the prior art such as the above needs to be welded multiple times between the resistance, the electrode and the pin assembly during the manufacturing process, and the pin also needs to be bent. The operation steps are more, the processing is complicated, and the structure is unstable through the bent pin to support the PCB board. SUMMARY

[0003] The utility model aims at providing a shunt, which solves the problem of the shunt resistance in the prior art, which needs to be welded multiple times between the resistance, the electrode and the pin assembly during the manufacturing process, and the pin also needs to be bent. The operation steps are more, the processing is complicated, and the structure is unstable through the bent pin to support the PCB board.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a shunt, which comprises a resistance body, electrodes are arranged at both ends of the resistance body, the end of the electrode body is recessed downward to form a groove, an L-shaped connecting piece is arranged in the groove, the L-shaped connecting piece at least partially extends out of the groove to form an extension, a pin is connected to the extension, the L-shaped connecting piece is pressed in the groove by the end of the resistance body, and a PCB board is fixed on the pin, so that the lower end surface of the PCB board is attached to the extension.

[0005] Preferably, the upper surface of the resistance body is lower than the upper surface of the electrode body, so that there is a gap between the resistance body and the PCB board.

[0006] Preferably, an L-shaped clamping groove is formed in the groove, and the L-shaped connecting piece is clamped in the L-shaped clamping groove.

[0007] Preferably, both ends of the resistance body are fixed in the groove by welding.

[0008] Preferably, mounting holes are formed at both ends of the electrode body.

[0009] Preferably, the electrode body, the L-shaped connecting piece and the pin are made of copper, and the resistance body is made of manganese-copper alloy.

[0010] Beneficial effects: the shunt provided by the utility model discloses a resistance body, electrode bodies are arranged at both ends of the resistance body, a groove body is formed by the downward recess of the end of the electrode body, an L-shaped connecting piece is arranged in the groove body, the L-shaped connecting piece at least partially extends out of the groove body to form an extension part, a pin is connected to the extension part, the L-shaped connecting piece is tightly pressed in the groove body by the end of the resistance body, a PCB board is fixed on the pin, and the lower end surface of the PCB board is attached to the extension part.

[0011] Other features and advantages of the utility model will be described in detail in the following specific embodiment part. BRIEF DESCRIPTION OF DRAWINGS

[0012] The drawings are used to provide further understanding of the utility model and constitute a part of the specification, and are used to explain the utility model together with the following specific embodiment, but do not constitute the limitation to the utility model.In the drawings,

[0013] Figure 1 It is the structure diagram of the heat dissipation resistance element provided by the utility model,

[0014] Figure 2 It is the side view of the heat dissipation resistance element provided by the utility model,

[0015] Figure 3 It is the structure diagram of the resistance body in the heat dissipation resistance element provided by the utility model,

[0016] Figure 4 It is the split diagram of the heat dissipation resistance element provided by the utility model.

[0017] EXPLANATION OF REFERENCE NUMERALS

[0018] 1-resistance body;2-electrode body;3-PCB board;4-pin;5-mounting hole;6-groove body;7-L-shaped connecting piece;8-L-shaped engaging groove;9-extension part. DETAILED DESCRIPTION

[0019] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0020] like Figures 1-4 As shown: This utility model provides a shunt, which includes a resistor 1, with electrodes 2 at both ends of the resistor 1. The ends of the electrodes 2 are recessed downwards to form a groove 6. An L-shaped connecting piece 7 is disposed within the groove 6, and the L-shaped connecting piece 7 extends at least partially out of the groove 6 to form an extension 9. A pin 4 is connected to the extension 9. The end of the resistor 1 presses the L-shaped connecting piece 7 tightly within the groove 6. A PCB board 3 is fixed to the pin 4, such that the lower end face of the PCB board 3 is in contact with the extension 9. During manufacturing, the L-shaped connecting piece is installed in the groove, and then both ends of the resistor are pressed into the groove and soldered to fix the resistor, electrodes, L-shaped connecting piece, and pin together. After the PCB board is installed behind the pin, its back side is in contact with the extension, creating a certain gap between the resistor and the PCB board to prevent the resistor's heat from affecting the PCB board and to increase the shunt's heat dissipation capacity.

[0021] In a preferred embodiment of this utility model, in order to increase the gap between the resistor and the PCB board, avoid the resistor heating up and affecting the PCB board, and increase the heat dissipation efficiency of the shunt, the upper surface of the resistor 1 is lower than the upper surface of the electrode 2, so that there is a gap between the resistor 1 and the PCB board 3.

[0022] In a preferred embodiment of this utility model, in order to enable the L-shaped connecting piece to fit effectively into the groove, so that the resistor can press it into the groove and facilitate subsequent welding and fixing, an L-shaped engaging groove 8 is formed in the groove 6, and the L-shaped connecting piece 7 engages in the L-shaped engaging groove 8.

[0023] In a preferred embodiment of this utility model, the two ends of the resistor 1 are fixed in the groove 6 by welding.

[0024] In a preferred embodiment of this utility model, in order to facilitate the installation and fixing of the electrode body, mounting holes 5 are formed at both ends of the electrode body 2.

[0025] In a preferred embodiment of this utility model, the electrode body 2, the L-shaped connecting piece 7 and the pin 4 are made of copper, and the resistor body 1 is made of manganese copper alloy.

[0026] The preferred embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the specific details in the above-described embodiments, and various simple modifications can be made to the technical solutions of the present application within the technical concept of the present application, and these simple modifications all belong to the protection scope of the present application.

[0027] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the present application will not further describe various possible combinations.

[0028] In addition, various different embodiments of the present application can also be combined in any manner, as long as they do not deviate from the concept of the present application, and they should also be considered as disclosed by the present application.

Claims

1. A flow diverter, characterized by, The shunt comprises a resistor body (1), two ends of the resistor body (1) are provided with electrode bodies (2), end portions of the electrode bodies (2) are recessed downward to form groove bodies (6), L-shaped connecting pieces (7) are arranged in the groove bodies (6), the L-shaped connecting pieces (7) extend out of the groove bodies (6) to form extension portions (9) at least partially, pins (4) are connected to the extension portions (9), the L-shaped connecting pieces (7) are pressed in the groove bodies (6) by end portions of the resistor body (1), and a PCB board (3) is fixed on the pins (4) so that a lower end surface of the PCB board (3) is attached to the extension portions (9).

2. The shunt of claim 1, wherein, An upper surface of the resistor body (1) is lower than an upper surface of the electrode bodies (2), so that a gap exists between the resistor body (1) and the PCB board (3).

3. The shunt of claim 2, wherein, L-shaped clamping grooves (8) are formed in the groove bodies (6), and the L-shaped connecting pieces (7) are clamped in the L-shaped clamping grooves (8).

4. The shunt of claim 3, wherein, The resistor body (1) is fixed in the groove bodies (6) by welding at two ends.

5. The shunt of claim 4, wherein, Mounting holes (5) are formed at two ends of the electrode bodies (2).

6. The shunt of claim 2, wherein, The electrode bodies (2), the L-shaped connecting pieces (7) and the pins (4) are made of copper, and the resistor body (1) is made of manganese copper alloy.

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