Current sensor structure

Abstract

The utility model discloses a current sensor structure, which relates to the field of current sensors and comprises a sensor shell, a coil probe and a pcb (printed circuit board) are arranged in the sensor shell, a heat dissipation plate is fixedly mounted on the pcb, a wiring end is arranged on the side surface of the sensor shell, an annular protection pad is arranged at an annular hole of the sensor shell, and the annular protection pad is fixedly mounted on the pcb. An installation base is fixedly installed on the bottom side of the sensor shell, an installation clamping mechanism and a cable positioning mechanism are arranged on the installation base, the clamping mechanism comprises installation clamping jaws, and the two installation clamping jaws are installed on the bottom side of the installation base in a sliding mode. According to the utility model, after the coil probe, the control panel and the power supply are integrated together, the overall size of the high-current sensor of more than 2000A is reduced, the weight is reduced, the high-current sensor is more portable, the high-current sensor has the installation flexibility of the low-current sensor, and the device is installed by using the clamping knob to control the installation clamping jaws to be close to each other. The device is convenient and fast to arrange, and the installation time is shortened.

Description

Technical Field

[0001] This utility model relates to the field of current sensor technology, and in particular to a current sensor structure. Background Technology

[0002] A current sensor is a device that senses the current being measured. Small power supply devices have incorporated more and more new technologies, such as switching power supplies, hard switching, soft switching, voltage regulation, linear feedback voltage regulation, magnetic amplifier technology, digital control voltage regulation, PWM, SPWM, electromagnetic compatibility, and so on.

[0003] In the existing technology, current sensors with a current rating of 2000A or higher are very bulky and use a separate control box and probe design, which is inconvenient to transport and use. Therefore, a current sensor structure is needed to meet people's needs. Utility Model Content

[0004] The purpose of this invention is to provide a current sensor structure to solve the problem mentioned in the background art that current sensors with a current rating of 2000A or higher are bulky and use a separate control box and probe design, which is inconvenient for transportation and use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a current sensor structure, including a sensor housing, a coil probe and a PCB board arranged inside the sensor housing, a heat sink fixedly mounted on the PCB board, a wiring terminal arranged on the side of the sensor housing, an annular protective pad arranged at the annular hole of the sensor housing, and a mounting base fixedly mounted on the bottom side of the sensor housing. A mounting clamping mechanism and a cable positioning mechanism are arranged on the mounting base, and the clamping mechanism includes mounting claws, with two mounting claws slidably mounted on the bottom side of the mounting base.

[0006] Preferably, the mounting base has a sliding groove, a U-shaped drive rod is slidably installed in the sliding groove, and the mounting claw is fixedly installed on the U-shaped drive rod.

[0007] Preferably, a clamping screw is rotatably mounted inside the mounting base, a threaded sleeve is threaded onto the clamping screw, and the same drive rod is rotatably mounted between the threaded sleeve and the U-shaped drive rod.

[0008] Preferably, both ends of the drive rod are rotatably mounted with drive shafts, the two drive shafts are respectively fixedly mounted on the U-shaped drive rod and the threaded sleeve, and a clamping knob is fixedly mounted on one end of the clamping screw that extends out of the mounting base.

[0009] Preferably, the cable positioning mechanism includes a positioning plate, which is fixedly installed on the mounting base. A fixing rubber pad is fixedly installed inside the positioning plate, and a fixing rubber pad is slidably installed inside the positioning plate.

[0010] Preferably, the bottom inner wall of the positioning plate is provided with a positioning bracket, a positioning slider is slidably installed inside the positioning bracket, a connecting block is fixedly installed on both the positioning slider and the movable rubber pad, and the same positioning rod is rotatably installed between the two connecting blocks.

[0011] Preferably, a positioning screw is threaded onto the positioning slider, and a positioning knob is fixedly installed at one end of the positioning screw that extends out of the positioning plate.

[0012] The beneficial effects of this utility model are:

[0013] In this invention, the high-current sensor with an ampere rating of 2000A or higher integrates the coil probe, control board, and power supply into one unit, resulting in a smaller overall size, lighter weight, and greater portability, while also retaining the installation flexibility of a low-current sensor.

[0014] In this invention, the device is installed by using a clamping knob to control the clamping claws to move closer together, which makes the device easy and quick to set up and reduces installation time. Fixed rubber pads and movable rubber pads are used to fix the cable to be tested, ensuring that the cable is stably positioned in the detection hole on the sensor housing, and avoiding cable misalignment that could affect the accuracy of data measurement. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a current sensor structure proposed in this utility model;

[0016] Figure 2 This is a side view of a current sensor structure proposed in this utility model;

[0017] Figure 3 This is a bottom view schematic diagram of a current sensor structure proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of the mounting base portion of a current sensor structure proposed in this utility model;

[0019] Figure 5 This is a schematic diagram of the positioning plate portion of a current sensor structure proposed in this utility model.

[0020] Figure 6 This is a schematic diagram of the sensor housing portion of a current sensor structure proposed in this utility model.

[0021] In the diagram: 100, sensor housing; 101, coil probe; 102, PCB board; 103, heat sink; 104, wiring terminal; 105, annular protective pad; 200, mounting base; 201, mounting jaw; 202, slide groove; 203, U-shaped drive rod; 204, clamping screw; 205, threaded sleeve; 206, drive rod; 207, drive shaft; 208, clamping knob; 300, positioning plate; 301, fixed rubber pad; 302, movable rubber pad; 303, connecting block; 304, positioning rod; 305, positioning screw; 306, positioning slider; 307, positioning screw; 308, positioning knob. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-6 A current sensor structure includes a sensor housing 100, in which a coil probe 101 and a PCB board 102 are arranged. A heat sink 103 is fixedly mounted on the PCB board 102. A wiring terminal 104 is arranged on the side of the sensor housing 100. An annular protective pad 105 is arranged at the annular hole of the sensor housing 100. A mounting base 200 is fixedly mounted on the bottom side of the sensor housing 100. A mounting clamping mechanism and a cable positioning mechanism are arranged on the mounting base 200. The clamping mechanism includes two mounting claws 201, which are slidably mounted on the bottom side of the mounting base 200. For high current sensors of 2000A and above, by integrating the coil probe, control board, and power supply together, the overall size is reduced, the weight is reduced, and it is more portable, while still possessing the installation flexibility of a small current sensor.

[0024] In an optional embodiment: the mounting base 200 has a sliding groove 202, a U-shaped drive rod 203 is slidably mounted in the sliding groove 202, and the mounting claw 201 is fixedly mounted on the U-shaped drive rod 203.

[0025] It should be noted that the movable U-shaped drive rod 203 drives the mounting claw 201 on the outside of the mounting base 200 to move through the slide groove 202, thereby achieving clamping.

[0026] In an optional embodiment: a clamping screw 204 is rotatably mounted inside the mounting base 200, a threaded sleeve 205 is threaded onto the clamping screw 204, and the same drive rod 206 is rotatably mounted between the threaded sleeve 205 and the U-shaped drive rod 203.

[0027] In an optional embodiment: both ends of the drive rod 206 are rotatably mounted with drive shafts 207, the two drive shafts 207 are respectively fixedly mounted on the U-shaped drive rod 203 and the threaded sleeve 205, and a clamping knob 208 is fixedly mounted on one end of the clamping screw 204 that extends out of the mounting base 200.

[0028] It should be noted that the clamping knob 208 drives the clamping screw 204 to rotate, the rotating clamping screw 204 drives the threaded sleeve 205 to move, the moving threaded sleeve 205 drives the drive rod 206 to rotate through the drive shaft 207, and the rotating drive rod 206 drives the U-shaped drive rod 203 to move through another drive shaft 207.

[0029] In an optional embodiment: the cable positioning mechanism includes a positioning plate 300, which is fixedly mounted on the mounting base 200. A fixing rubber pad 301 is fixedly mounted inside the positioning plate 300 and slidably mounted inside the positioning plate 300.

[0030] It should be noted that by using the fixed rubber pad 301 and the movable rubber pad 302 to position and clamp the cable on both sides of the sensor housing 100, the stability of the measurement can be guaranteed.

[0031] In an optional embodiment: a positioning bracket 305 is provided on the bottom inner wall of the positioning plate 300, a positioning slider 306 is slidably installed in the positioning bracket 305, a connecting block 303 is fixedly installed on both the positioning slider 306 and the movable rubber pad 302, and the same positioning rod 304 is rotatably installed between the two connecting blocks 303.

[0032] It should be noted that the rotating positioning screw 307 drives the positioning slider 306 to slide within the positioning arm 305, and the sliding positioning arm 305 drives the movable rubber pad 302 to move to a different position through the connecting block 303 in conjunction with the positioning rod 304.

[0033] In an optional embodiment: a positioning screw 307 is threaded onto the positioning slider 306, and a positioning knob 308 is fixedly installed at one end of the positioning screw 307 extending out of the positioning plate 300. It should be noted that the direction and position of the cable through which the current sensor passes have a certain impact on the measurement accuracy. The position of the cable needs to be fixed. Rotating the positioning knob 308 will cause the positioning screw 307 to rotate.

[0034] Working principle of this utility model:

[0035] When using this device, the cable is simply placed inside the opening in the sensor housing 100 for measurement. The sensor housing 100 is positioned by clamping with the mounting jaws 201. Rotating the clamping knob 208 drives the clamping screw 204 to rotate. The rotating clamping screw 204 moves the threaded sleeve 205, which in turn drives the drive rod 206 to rotate via the drive shaft 207. The rotating drive rod 206, in turn, drives the U-shaped drive rod 203 via another drive shaft 207. The moving U-shaped drive rod 203, through the sliding groove 202, moves the mounting jaws 201 on the outside of the mounting base 200 to achieve clamping. The direction and position of the cable passing through the current sensor have a certain impact on the measurement accuracy. It is necessary to fix the position of the cable. Rotating the positioning knob 308 drives the positioning screw 307 to rotate. The rotating positioning screw 307 drives the positioning slider 306 to slide within the positioning pad 305. The sliding positioning pad 305, through the connecting block 303 and in cooperation with the positioning rod 304, drives the movable rubber pad 302 to move to a different position. Then, the movable rubber pad 302 and the fixed rubber pad 301 are used to clamp the cable. After the fixed rubber pad 301 and the movable rubber pad 302 are used to position and clamp the cable on both sides of the sensor housing 100, the measurement stability can be guaranteed.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A current sensor structure, comprising a sensor housing (100), characterized in that: The sensor housing (100) is equipped with a coil probe (101) and a PCB board (102). A heat sink (103) is fixedly installed on the PCB board (102). A terminal block (104) is arranged on the side of the sensor housing (100). An annular protective pad (105) is arranged at the annular hole of the sensor housing (100). A mounting base (200) is fixedly installed on the bottom side of the sensor housing (100). A mounting clamping mechanism and a cable positioning mechanism are arranged on the mounting base (200). The clamping mechanism includes mounting claws (201). Two mounting claws (201) are slidably mounted on the bottom side of the mounting base (200).

2. The current sensor structure according to claim 1, characterized in that: The mounting base (200) has a sliding groove (202), and a U-shaped drive rod (203) is slidably installed in the sliding groove (202). The mounting claw (201) is fixedly installed on the U-shaped drive rod (203).

3. The current sensor structure according to claim 1, characterized in that: A clamping screw (204) is rotatably installed inside the mounting base (200). A threaded sleeve (205) is threaded onto the clamping screw (204). The same drive rod (206) is rotatably installed between the threaded sleeve (205) and the U-shaped drive rod (203).

4. A current sensor structure according to claim 3, characterized in that: Both ends of the drive rod (206) are rotatably mounted with drive shafts (207). The two drive shafts (207) are fixedly mounted on the U-shaped drive rod (203) and the threaded sleeve (205) respectively. A clamping knob (208) is fixedly mounted on one end of the clamping screw (204) that extends out of the mounting base (200).

5. A current sensor structure according to claim 1, characterized in that: The cable positioning mechanism includes a positioning plate (300), which is fixedly installed on the mounting base (200). A fixing rubber pad (301) is fixedly installed inside the positioning plate (300) and the fixing rubber pad (301) is slidably installed inside the positioning plate (300).

6. A current sensor structure according to claim 5, characterized in that: The bottom inner wall of the positioning plate (300) is provided with a positioning bracket (305), and a positioning slider (306) is slidably installed inside the positioning bracket (305). A connecting block (303) is fixedly installed on both the positioning slider (306) and the movable rubber pad (302). The same positioning rod (304) is rotatably installed between the two connecting blocks (303).

7. A current sensor structure according to claim 6, characterized in that: The positioning slider (306) is threaded with a positioning screw (307), and a positioning knob (308) is fixedly installed at one end of the positioning screw (307) extending out of the positioning plate (300).

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