CN215894737U

CN215894737U - Magnetic induction current sensor

Info

Publication number: CN215894737U
Application number: CN202121859774.1U
Authority: CN
Inventors: 于晶
Original assignee: Shanghai Zhongyun New Energy Technology Co ltd
Current assignee: Shanghai Zhongyun New Energy Technology Co ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-02-22
Anticipated expiration: 2031-08-10

Abstract

The utility model discloses a magnetic induction current sensor which comprises a PCB, wherein a plurality of welding holes are formed in the top of the PCB in a penetrating mode, mounting rods are fixedly connected in the welding holes, shielding rings are fixedly connected to the tops of the mounting rods, a supporting plate is fixedly connected between the inner walls of the two sides of each shielding ring, a supporting pad is fixedly connected to the top of each supporting plate, a lead is arranged at the top of each supporting pad, a through hole is formed in the top of each supporting plate in a penetrating mode, a chip current sensor is fixedly connected to the top of the PCB, the chip current sensors are located in the shielding rings, mounting holes are formed in four corners of the top of the PCB, and a guide piece is fixedly connected to the top of the PCB. According to the utility model, the lead penetrates through the shielding ring, and then the lead generates a magnetic field in the shielding ring, so that factors such as an external interference magnetic field are blocked, the accuracy of measured data is ensured, and the anti-interference effect on the chip current sensor is improved.

Description

Magnetic induction current sensor

Technical Field

The utility model relates to the technical field of sensors, in particular to a magnetic induction current sensor.

Background

The magnetic sensor is a device which converts the magnetic property change of a sensitive element caused by external factors such as magnetic field, current, stress strain, temperature, light and the like into an electric signal and detects corresponding physical quantity in this way, the magnetic induction current sensor is a sensor which detects the current by using the magnetic field, the current sensor of a chip which is the mainstream in the current market is surface-mounted on a circuit board, the current is arranged below a PCB through a copper bar, and the arrangement has poor anti-interference performance for the measurement result.

At present, most of the existing magnetic induction current sensors have the following defects: in the use, it is poor to the anti-interference effect of chip current sensor, influences magnetic induction current sensor's result of use, to sum up, current magnetic induction current sensor still can not agree with actual need well mostly.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a magnetic induction current sensor.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a magnetic induction current sensor, includes the PCB board, the top of PCB board is run through and is equipped with a plurality of welding holes, and the fixedly connected with installation pole in the welding hole, the top fixedly connected with shielding ring of a plurality of installation poles, fixedly connected with backup pad between the both sides inner wall of shielding ring, the top fixedly connected with supporting pad of backup pad, the top of supporting pad are equipped with the wire, and the top of backup pad is run through and is equipped with the perforation, the top fixedly connected with chip current sensor of PCB board, chip current sensor are located the shielding ring.

Furthermore, four corners of the top of the PCB are provided with mounting holes.

Furthermore, the top of the PCB is fixedly connected with a guide sheet.

Furthermore, the top of guide vane is equipped with the screw hole, and screw hole female connection has set screw.

Furthermore, one end of the wire is electrically connected with a guide head, the guide head is in contact with the guide sheet, and one end of the guide head is sleeved with a protective sleeve.

Furthermore, the top of PCB board fixedly connected with mounting panel, the top fixedly connected with hall current sensor of mounting panel.

Furthermore, the top fixedly connected with fixation clamp of PCB board, fixation clamp and wire joint.

The utility model has the beneficial effects that:

1. according to the utility model, the lead penetrates through the shielding ring, the lead generates a magnetic field in the shielding ring, and then the magnetic field is transmitted to the position 4.5mm above the chip current sensor through the through hole for detection, so that factors such as an external interference magnetic field are blocked, the accuracy of measured data is ensured, and the anti-interference effect on the chip current sensor is improved.

2. The utility model can realize the stability of the structure by arranging the mounting rod, the welding hole and the shielding ring in a rigid connection mode, and only needs to be externally connected with a lead for measuring the current of the low-power electric appliance, thereby saving the cost and the design time and improving the space utilization rate.

3. The guide head is pressed on the guide sheet by screwing the fixing screw, so that the PCB is communicated with the lead, the lead is conveniently connected with the PCB, and the operation is simple, convenient and quick.

Drawings

Fig. 1 is a schematic perspective view of a magnetic induction current sensor according to the present invention;

fig. 2 is a schematic view of a storage structure of a magnetic induction current sensor according to the present invention;

fig. 3 is a schematic diagram of an exploded structure of a magnetic induction current sensor according to the present invention;

fig. 4 is a schematic partial sectional structural view of a magnetic induction current sensor according to the present invention.

In the figure: 1. a PCB board; 2. mounting holes; 3. a guide plate; 4. a guide head; 5. fixing screws; 6. a protective sleeve; 7. mounting a plate; 8. a Hall current sensor; 9. a wire; 10. a shield ring; 11. mounting a rod; 12. welding the hole; 13. a support plate; 14. perforating; 15. a support pad; 16. a chip current sensor; 17. and (4) fixing clips.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 to 4, a magnetic induction current sensor includes a PCB 1, a plurality of welding holes 12 are formed through the top of the PCB 1, mounting rods 11 are welded in the welding holes 12, a shielding ring 10 is integrally formed on the top of the mounting rods 11, structural stability can be achieved by rigid connection between the mounting rods 11, the welding holes 12 and the shielding ring 10, a supporting plate 13 is fixed between inner walls of two sides of the shielding ring 10 through bolts, a supporting pad 15 is bonded on the top of the supporting plate 13, a lead 9 is arranged on the top of the supporting pad 15, the supporting pad 15 supports the lead 9 to prevent the lead 9 from falling down, a through hole 14 is formed through the top of the supporting plate 13, a chip current sensor 16 is welded on the top of the PCB 1, the model of the chip current sensor 16 is STK-616E, the chip current sensor 16 is located in the shielding ring 10, the lead 9 generates a magnetic field in the shielding ring 10, then, the magnetic field is transmitted to the position 4.5mm above the chip current sensor 16 through the through hole 14 for detection, thereby blocking factors such as external interference magnetic field and the like and ensuring the accuracy of the measured data.

Four corners of the top of the PCB 1 are respectively provided with a mounting hole 2, the mounting holes 2 are convenient for the mounting and fixing of the PCB 1, the top of the PCB 1 is welded with a guide sheet 3, one end of a lead 9 is electrically connected with a guide head 4, the guide head 4 is contacted with the guide sheet 3, the top of the guide sheet 3 is provided with a threaded hole, a threaded hole is internally connected with a fixing screw 5, the fixing screw 5 is screwed to press the guide head 4 on the guide sheet 3 so as to communicate the PCB 1 with the lead 9, one end of the guide head 4 is sleeved with a protective sleeve 6, the protective sleeve 6 plays a role of electric shock prevention, the top of the PCB 1 is adhered with a mounting plate 7, the top of the mounting plate 7 is welded with a Hall current sensor 8, the model of the Hall current sensor 8 is CHV-100, the Hall current sensor 8 measures the current passing through the lead 9, the top of the PCB 1 is welded with a fixing clamp 17, the fixing clamp 17 is clamped with the lead 9, the fixing clamp 17 supports the lead 9, thereby leaving the wires 9 suspended within the hall current sensor 8.

The working principle is as follows: during the use, at first, install PCB board 1 fixedly through mounting hole 2, tighten set screw 5 again and press guide head 4 on guide piece 3, thereby communicate PCB board 1 with wire 9, then, pass hall current sensor 8 and shield ring 10 with wire 9, hall current sensor 8 measures the electric current that passes through in the wire 9, then, wire 9 produces magnetic field in shield ring 10, and then, the magnetic field passes to chip current sensor 16 top 4.5mm department through perforation 14 and detects, thereby block factors such as external interference magnetic field, ensured measured data's accuracy.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

Claims

1. The utility model provides a magnetic induction current sensor, includes PCB board (1), a serial communication port, the top of PCB board (1) is run through and is equipped with a plurality of welding holes (12), fixedly connected with installation pole (11) in welding hole (12), top fixedly connected with shielding ring (10) of a plurality of installation poles (11), fixedly connected with backup pad (13) between the both sides inner wall of shielding ring (10), the top fixedly connected with supporting pad (15) of backup pad (13), the top of supporting pad (15) is equipped with wire (9), the top of backup pad (13) is run through and is equipped with perforation (14), the top fixedly connected with chip current sensor (16) of PCB board (1), chip current sensor (16) are located shielding ring (10).

2. A magnetically inductive current sensor according to claim 1, characterized in that the PCB board (1) is provided with mounting holes (2) at each of its four corners at the top.

3. A magnetically inductive current sensor according to claim 1, characterized in that the top of the PCB board (1) is fixedly connected with a guide tab (3).

4. A magnetic induction current sensor according to claim 3, characterised in that the top of the guide plate (3) is provided with a threaded hole, in which a fixing screw (5) is screwed.

5. The magnetic induction current sensor according to claim 4, wherein one end of the conducting wire (9) is electrically connected with a conducting head (4), the conducting head (4) is in contact with the conducting sheet (3), and one end of the conducting head (4) is sleeved with a protective sleeve (6).

6. A magnetically inductive current sensor according to claim 1, characterized in that a mounting plate (7) is fixedly connected to the top of the PCB board (1), and a hall current sensor (8) is fixedly connected to the top of the mounting plate (7).

7. The magnetically inductive current sensor according to claim 1, wherein a fixing clip (17) is fixedly connected to the top of the PCB board (1), and the fixing clip (17) is clamped to the conductive wire (9).