Perforated open-loop magnetic circuit mounting structure

Abstract

The utility model discloses a perforated open-loop magnetic circuit mounting structure, which comprises a fixed seat, two magnetic cores symmetrically arranged on the upper side surface of the fixed seat and a PCB (printed circuit board) positioned above the magnetic cores, four mounting columns are arranged on the circumferential side surface of the fixed seat in a rectangular array, and the PCB is attached to the upper side surfaces of the mounting columns. An annular positioning plate and an L-shaped positioning plate are arranged at the upper ends of the mounting columns on the front side and the rear side respectively, an L-shaped sinking groove is formed in the upper side face of the L-shaped positioning plate, the lower side face of the L-shaped sinking groove is attached to the lower side face of the PCB, and the inner side face of the annular positioning plate and the inner side face of the L-shaped positioning plate are both attached to the outer side face of the PCB. The upper side faces of the annular positioning plate and the L-shaped positioning plate are flush with the upper side face of the PCB, and the upper side face of the PCB is provided with four fixing bolts independently connected with the mounting columns. The utility model has the advantage that the PCB can be installed and positioned.

Description

Technical Field

[0001] The utility model belongs to the technical field of perforated open-loop magnetic circuits, and relates to an installation structure of a perforated open-loop magnetic circuit. Background Art

[0002] An open-loop Hall current sensor is composed of a Hall element, a magnetic core made of soft magnetic material with an air gap, and an appropriate amplifier circuit. Since the working process of this current sensor is an open-loop structure, it is called an open-loop Hall current sensor.

[0003] The Chinese utility model patent with the authorization announcement number of CN211627663U discloses a magnetic circuit and circuit installation structure for an open-loop Hall current sensor, including a PCB board and a magnetic circuit fixing frame installed on the PCB board and cooperating with the PCB board. Two mutually cooperating magnetic cores are installed between the PCB board and the magnetic circuit fixing frame. Two air gaps with the same width and symmetrically distributed are formed between the two magnetic cores. Hall elements are installed in both air gaps. Stainless steel solder pads are arranged outside the two air gaps. Shielding frames are arranged between the two air gaps and the PCB board. The installation positions of the two shielding frames respectively coincide with the positions of the two air gaps of the magnetic cores. The shielding frames are connected to the PCB board through grounding pins and are grounded through the PCB board. When installing the PCB board on the mounting posts of the fixing frame, this technical solution lacks a positioning device, which is not convenient for the installation of the PCB board. Content of the Utility Model

[0004] In view of the above problems, the utility model provides an installation structure of a perforated open-loop magnetic circuit, which well solves the problems in the prior art.

[0005] To achieve the above object, the technical solution adopted by the utility model is as follows: An installation structure of a perforated open-loop magnetic circuit includes a fixed seat, two symmetrically arranged magnetic cores on the upper side of the fixed seat, and a PCB board located above the magnetic cores. Four mounting posts are arranged in a rectangular array on the circumferential side of the fixed seat. The PCB board is attached to the upper sides of the mounting posts. Ring-shaped positioning plates and L-shaped positioning plates are respectively arranged at the upper ends of the front and rear mounting posts. An L-shaped sinking groove is formed on the upper side of the L-shaped positioning plate. The lower side of the L-shaped sinking groove is attached to the lower side of the PCB board. The inner sides of the ring-shaped positioning plate and the L-shaped positioning plate are both attached to the outer side of the PCB board. The upper sides of the ring-shaped positioning plate and the L-shaped positioning plate are flush with the upper side of the PCB board. Four fixing bolts individually connected to the mounting posts are arranged on the upper side of the PCB board.

[0006] Furthermore, two Hall positioning platforms are symmetrically arranged on the upper side of the fixed seat, and the left and right sides of the Hall positioning platforms are attached to the magnetic cores.

[0007] Furthermore, a solder tab is provided on the outer side surface of the Hall positioning table, and the inner side surface of the solder tab is fixed to the two magnetic cores.

[0008] Furthermore, the material of the solder tab is stainless steel.

[0009] Compared with the prior art, the present utility model has the following beneficial effects:

[0010] The present utility model realizes the positioning of the PCB board during installation through the annular positioning plate and the L-shaped positioning plate, improving the working efficiency of the staff when installing the PCB board. The connection and fixation between the two magnetic cores and the Hall positioning table are realized through the solder tab, improving the stability of the magnetic core in the fixed seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is the assembly schematic diagram of the present utility model;

[0012] Figure 2 is the Figure 1 three-dimensional view of the present utility model;

[0013] Figure 3 is the Figure 1 three-dimensional view of the fixed seat of the present utility model.

[0014] In the figure: 1, fixed seat; 2, magnetic core; 3, solder tab; 4, PCB board; 5, fixing bolt; 101, mounting post; 102, annular positioning plate; 103, L-shaped positioning plate; 104, Hall positioning table. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0016] Such as Figure 1 , Figure 2 , Figure 3As shown in the figure, a perforated open-loop magnetic circuit mounting structure includes a fixed base 1, two magnetic cores 2 symmetrically arranged on the upper side of the fixed base 1, and a PCB board 4 located above the magnetic cores 2. Four mounting posts 101 are fixedly arranged in a rectangular array on the circumferential side of the fixed base 1. The PCB board 4 is attached to the upper sides of the mounting posts 101. Ring-shaped positioning plates 102 and L-shaped positioning plates 103 are respectively welded to the upper ends of the front and rear mounting posts 101. An L-shaped sunk groove is formed on the upper side of the L-shaped positioning plate 103, and the lower side of the L-shaped sunk groove is attached to the lower side of the PCB board 4. The inner sides of the ring-shaped positioning plate 102 and the L-shaped positioning plate 103 are both attached to the outer side of the PCB board 4. The upper sides of the ring-shaped positioning plate 102 and the L-shaped positioning plate 103 are flush with the upper side of the PCB board 4. Four fixing bolts 5 that are individually connected to the mounting posts 101 are arranged on the upper side of the PCB board 4.

[0017] In this embodiment, two Hall positioning platforms 104 are symmetrically arranged on the upper side of the fixed base 1, and the left and right sides of the Hall positioning platforms 104 are attached to the vertical sides of the magnetic cores 2.

[0018] In this embodiment, a solder pad 3 is arranged on the outer side of the Hall positioning platform 104, and the inner side of the solder pad 3 is welded and fixed to the two magnetic cores 2.

[0019] In this embodiment, the material of the solder pad 3 is stainless steel.

[0020] During use, the staff symmetrically place the two magnetic cores 2 on the fixed base 1, making the magnetic cores 2 attached to the left and right sides of the Hall positioning platforms 104, and welding the two magnetic cores 2 and the Hall positioning platforms 104 together through the solder pad 3. Then, the staff place the PCB board 4 on the upper sides of the mounting posts 101, making the front and rear sides of the PCB board 4 respectively attached to the inner sides of the ring-shaped positioning plate 102 and the L-shaped positioning plate 103, so that the ring-shaped positioning plate 102 and the L-shaped positioning plate 103 limit the PCB board 4 to prevent the PCB board 4 from shaking during installation, improving the convenience and work efficiency of the staff when installing the PCB board 4. Finally, the staff connect and fix the PCB board 4 to the mounting posts 101 through the fixing bolts 5 to prevent the PCB board 4 from detaching during use, improving the reliability of the PCB board 4 during use.

[0021] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A perforated open-loop magnetic circuit mounting structure, comprising a fixing seat, two magnetic cores symmetrically arranged on the upper side of the fixing seat, and a PCB board located above the magnetic core, wherein the fixing seat is provided with four mounting posts in a rectangular array on the circumferential side surface, and the PCB board is fitted with the upper side surface of the mounting posts, characterized in that: An annular positioning plate and an L-shaped positioning plate are respectively provided at the upper ends of the mounting columns on the front and rear sides. An L-shaped recessed groove is provided on the upper side of the L-shaped positioning plate. The lower side of the L-shaped recessed groove is fitted with the lower side of the PCB board. The inner sides of the annular positioning plate and the L-shaped positioning plate are both fitted with the outer side of the PCB board. The upper sides of the annular positioning plate and the L-shaped positioning plate are flush with the side of the PCB board. Four fixing bolts separately connected to the mounting columns are provided on the side of the PCB board.

2. A perforated open-loop magnetic circuit installation structure according to claim 1, characterized in that: Two Hall positioning platforms are symmetrically arranged on the upper side of the fixing seat, and the left and right side surfaces of the Hall positioning platforms are in contact with the magnetic core.

3. A perforated open-loop magnetic circuit installation structure according to claim 2, characterized in that: A welding piece is arranged on the outer side surface of the Hall positioning stage, and the inner side surface of the welding piece is fixed to two magnetic cores.

4. A perforated open-loop magnetic circuit installation structure according to claim 3, characterized in that: The welding sheet is made of stainless steel.

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