Round magnetic core mounting structure

Abstract

The utility model relates to the technical field of closed-loop sensors. The magnetic core fixing device has the advantages of meeting installation requirements of magnetic cores of different models, and comprises a sheath fixing frame, a sheath cover and a magnetic core, the sheath fixing frame and the sheath cover are installed together through a connecting piece, two first needle holes are formed in the connecting piece, and the magnetic core fixing device is characterized in that the connecting piece is connected to a fixing center frame in an inserted mode; side frames are inserted into the front side and the rear side of the fixing center frame, an adjusting assembly is arranged in the fixing center frame, the two side frames are fixed to the adjusting assembly, and the connecting piece and the fixing assembly are installed on the upper side face of the PCB through a set of first fixing needles and a set of second fixing needles respectively.

Description

TECHNICAL FIELD

[0001] The utility model belongs to closed loop sensor technical field, concretely relates to a circular magnetic core mounting structure. BACKGROUND

[0002] The closed loop current sensor is a kind of electronic components that is applied very widely, it is applied to various current conversion technologies and self-control field with current as control object.Closed loop current sensor is generally composed of coil magnetic core assembly and circuit on circuit board and installation fixed shell, coil magnetic core assembly includes magnetic core, coil, upper and lower plastic sheath.The existing structure is that soft magnetic material is wound into annular magnetic core first, and then the gap is opened on the magnetic core after the sheet-shaped strip is stacked, the magnetic core is sleeved on the plastic sheath, and the coil is wound on the plastic sheath to form coil magnetic core assembly.Then the magnetic core gap is aligned with the Hall element connected with PCB, and the assembly is directly welded on the PCB.

[0003] The current closed loop Hall current sensor circular magnetic core winding structure adopts sheath structure installation mode.But the present installation structure is inconvenient to install the magnetic core on the PCB, and the existing fixing frame is inconvenient to install different specifications of magnetic cores;

[0004] Therefore, a circular magnetic core mounting structure is designed to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at overcoming the insufficient of prior art and providing a circular magnetic core mounting structure that can satisfy the installation of different types of magnetic cores.

[0006] The technical scheme of the utility model is as follows:

[0007] A circular magnetic core mounting structure, including sheath fixed frame, sheath cover and magnetic core, the sheath fixed frame and sheath cover are installed together through connecting piece, two first needle holes are formed in the connecting piece, and the connecting piece is inserted into the fixed center frame, the front and rear sides of the fixed center frame are both inserted into the side frame, the fixed center frame is provided with adjusting assembly, and the two side frames are both fixed on the adjusting assembly, and the connecting piece and fixed assembly are installed on the upper side of PCB through a group of first fixed needles and a group of second fixed needles.

[0008] Further, the number of the group of first fixed needles and the group of second fixed needles is two.

[0009] Further, the two first fixed needles are respectively penetrated through the two first needle holes.

[0010] Further, the right part of the two side frames is respectively provided with two second needle holes, and the two second fixed needles are respectively penetrated through the two second needle holes.

[0011] Further, the adjusting assembly comprises a mounting cavity penetratingly arranged in the middle part of the fixed center frame, the front and rear parts of the mounting cavity are respectively inserted with a connecting block, the two connecting blocks are respectively fixed on the side walls of the two side frames, the other sides of the two connecting blocks are respectively fixed on the transmission assembly, a plurality of springs are arranged between the two connecting blocks, and the two ends of each spring are respectively fixed on the two connecting blocks.

[0012] Further, the transmission assembly comprises a driving cavity arranged in the inner part of the fixed center frame, the driving cavity is communicated with the mounting cavity, a driving column is rotationally connected in the driving cavity, a cross plate is inserted on one side of the driving column, a dial plate is fixed on the side of the cross plate away from the driving column, a placing cavity is arranged on the side of the fixed center frame close to the dial plate, the dial plate can be inserted into the placing cavity, a driving rod is fixed on the other side of the driving column, a first bevel gear is fixed on the side of the driving rod away from the driving column, a second bevel gear is meshed on the first bevel gear, the second bevel gear is fixed on a first connecting rod, one end of the first connecting rod is rotationally connected to the inner wall of the driving cavity, a universal joint is fixed on the other end of the first connecting rod, the other end of the universal joint is fixed on a second connecting rod, the other end of the second connecting rod is rotationally connected to the inner wall of the driving cavity, a round gear is fixed on the first connecting rod and the second connecting rod, a rack is meshed on the upper and lower sides of each round gear, the racks on the upper sides of the round gears are fixed on the side frames on the rear part of the fixed center frame, and the racks on the lower sides of the round gears are fixed on the side frames on the front part of the fixed center frame.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1、The utility model discloses a set of first fixed needle and a set of second fixed needle are welded and assembled as a whole, and the anti-vibration performance is strong, and the reliability is high.

[0015] 2、The utility model discloses a fixed center frame and adjusting assembly can adjust the distance between the two side frames and the fixed center frame, thereby satisfying the installation of different specifications of magnetic cores.

[0016] 3、The utility model discloses a set of first fixed needle can fix the end of winding, and avoids the end of hanging in the air. DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the three-dimensional structure of the utility model and shows eleven drawings;

[0018] Figure 2 It is the three-dimensional structure of the utility model and shows eleven drawings;

[0019] Figure 3 It is the position diagram of the adjusting assembly of the utility model;

[0020] Figure 4 is the utility model Figure 3 is the utility of A place in the middle of the utility model;

[0021] Figure 5 is the utility model of fixed center frame and edge frame;

[0022] Figure 6 is the utility model of connecting block;

[0023] Figure 7 is the side view schematic diagram of the adjusting assembly in the utility model.

[0024] In the figure, 1, first pinhole;2, edge frame;3, fixed center frame;4, connecting piece;5, sheath fixing frame;6, sheath cover;7, first fixed needle;8, second fixed needle;9, PCB board;10, second pinhole;11, installation cavity;12, connecting block;13, spring;14, drive cavity;15, drive column;16, cross plate;17, dial plate;18, placing cavity;19, drive rod;20, first helical gear;21, second helical gear;22, first connecting rod;23, second connecting rod;24, universal joint;25, circular gear;26, rack. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] As Figures 1-7 shown, a circular magnetic core mounting structure, including sheath fixing frame 5, sheath cover 6 and magnetic core, sheath fixing frame 5 and sheath cover 6 are installed together through connecting piece 4, two first pinholes 1 are opened on connecting piece 4, it is characterized in that: connecting piece 4 is inserted on fixed center frame 3, both sides of fixed center frame 3 are inserted with edge frame 2, adjusting assembly is arranged in fixed center frame 3, both edge frames 2 are fixed on adjusting assembly, connecting piece 4 and fixed assembly are installed on the upper side of PCB board 9 through a group of first fixed needle 7 and a group of second fixed needle 8 respectively;

[0027] The sheath fixing frame 5, the sheath cover 6, the magnetic core and the connecting piece 4 are the sheath fixing frame 5, the sheath cover 6, the magnetic core and the connecting piece 4 in the sensor rod magnetic core integrated sheath mounting structure with the application number 202320586629.3, wherein the connecting piece 4 includes all structures in the sheath mounting structure except the sheath fixing frame 5, the sheath cover 6 and the magnetic core, and the fine structures are not indicated one by one here;

[0028] The distance between the side frame 2 and the fixed center frame 3 can be adjusted through the adjusting assembly, and different specifications of the sheath fixing frame 5 and the sheath cover 6 can be installed and used, so as to meet the use of different specifications of the magnetic core;

[0029] The inner eight grooves are arranged on the side walls of the two side frames 2, and the connecting piece 4 can be automatically aligned through the inner eight grooves when the connecting piece 4 is installed on the side frame 2;

[0030] The inner wall of the fixed center frame 3 is provided with a Hall mounting groove, so that the Hall element can be installed in a 45-degree inclined angle mode;

[0031] In the embodiment, the number of the first fixed needle 7 and the second fixed needle 8 is two.

[0032] In the embodiment, the two first fixed needles 7 respectively penetrate the two first needle holes 1, and the winding is wound on the sheath fixing frame 5 and the sheath cover 6. After the winding coil is wound on the first fixed needle 7, it is installed in the PCB hole through tin dipping, and the electrical performance connection is realized through welding;

[0033] As preferred, the right part of the two side frames 2 is respectively provided with two second needle holes 10, and the two second fixed needles 8 respectively penetrate the two second needle holes 10.

[0034] Through the installation of the two second fixed needles 8, the PCB is penetrated and firmly fixed by welding;

[0035] The two first fixed needles 7 and the two second fixed needles 8 are welded and assembled into one body, have strong anti-vibration performance and high reliability.

[0036] In the embodiment, the adjusting assembly includes the installation cavity 11 penetratingly arranged in the middle part of the fixed center frame 3, the connecting blocks 12 are respectively inserted into the front and rear parts of the installation cavity 11, the two connecting blocks 12 are respectively fixed on the side walls of the two side frames 2, the other sides of the two connecting blocks 12 are respectively fixed on the transmission assembly, and the plurality of springs 13 are arranged between the two connecting blocks 12, and the two ends of each spring 13 are respectively fixed on the two connecting blocks 12.

[0037] In the embodiment, the transmission assembly comprises a driving cavity 14 formed in the inside of the fixed center frame 3, the driving cavity 14 is communicated with the mounting cavity 11, a driving column 15 is rotationally connected in the driving cavity 14, a cross plate 16 is inserted on one side of the driving column 15, a dial plate 17 is fixed on the side of the cross plate 16 away from the driving column 15, a placing cavity 18 is formed on the side of the fixed center frame 3 close to the dial plate 17, the dial plate 17 can be inserted into the placing cavity 18, a driving rod 19 is fixed on the other side of the driving column 15, a first bevel gear 20 is fixed on the side of the driving rod 19 away from the driving column 15, a second bevel gear 21 is engaged on the first bevel gear 20, the second bevel gear 21 is fixed on a first connecting rod 22, one end of the first connecting rod 22 is rotationally connected to the inner wall of the driving cavity 14, a universal joint 24 is fixed on the other end of the first connecting rod 22, the other end of the universal joint 24 is fixed on a second connecting rod 23, the other end of the second connecting rod 23 is rotationally connected to the inner wall of the driving cavity 14, a circular gear 25 is fixed on the first connecting rod 22 and the second connecting rod 23, a rack 26 is engaged on the upper and lower sides of each circular gear 25, the racks 26 on the upper sides of the circular gears 25 are all fixed on the side frames 2 located at the rear of the fixed center frame 3, and the racks 26 on the lower sides of the circular gears 25 are all fixed on the side frames 2 located at the front of the fixed center frame 3.

[0038] The inner wall of the placing cavity 18 has large friction, and it is difficult to rotate the dial plate 17 when the dial plate 17 is inserted into the placing cavity 18.

[0039] A bolt can also be installed on the dial plate 17, and the dial plate 17 can be fixed by the bolt after being adjusted each time.

[0040] The spring 13 can pull the two side frames 2 close to the fixed center frame 3, so that the connecting pieces 4 are clamped.

[0041] In the normal state, the dial plate 17 is located in the placing cavity 18, and when used, the dial plate 17 needs to be pulled first so as to be separated from the placing cavity 18, and then the dial plate 17 is rotated to drive the cross plate 16, the driving column 15, the driving rod 19, the first bevel gear 20, the second bevel gear 21, the first connecting rod 22, the second connecting rod 23, the circular gears 25 and the racks 26 to rotate in sequence, so that the distance between the two side frames 2 and the fixed center frame 3 is controlled by adjusting the rotation direction of the dial plate 17, so as to meet the needs and installation of different magnetic cores.

[0042] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A circular magnetic core mounting structure, comprising a sheath fixing frame, a sheath cover, and a magnetic core, wherein the sheath fixing frame and the sheath cover are mounted together by a connector, the connector having two first pin holes, characterized in that: The connecting piece is inserted on the fixed center frame, the front and rear sides of the fixed center frame are inserted with the side frames, the fixed center frame is provided with an adjusting assembly, the two side frames are fixed on the adjusting assembly, and the connecting piece and the fixed assembly are respectively installed on the upper side of the PCB through a group of first fixing needles and a group of second fixing needles.

2. A circular core mounting structure according to claim 1, characterized by: The number of the group of first fixing needles and the group of second fixing needles is two.

3. A circular core mounting structure according to claim 2, characterized by: The two first fixing needles respectively penetrate the two first needle holes.

4. A circular core mounting structure according to claim 1, characterized by: The right parts of the two side frames are respectively provided with two second needle holes, and the two second fixing needles respectively penetrate the two second needle holes.

5. A circular core mounting structure according to claim 1, characterized by: The adjusting assembly comprises an installation cavity penetratingly provided in the middle part of the fixed center frame, the front and rear parts of the installation cavity are inserted with connecting blocks, the two connecting blocks are respectively fixed on the side walls of the two side frames, the other sides of the two connecting blocks are respectively fixed on a transmission assembly, and a plurality of springs are arranged between the two connecting blocks, and the two ends of each spring are respectively fixed on the two connecting blocks.

6. A circular core mounting structure according to claim 5, characterized by: The transmission assembly comprises a driving cavity provided in the inner part of the fixed center frame, the driving cavity is communicated with the installation cavity, a driving column is rotationally connected in the driving cavity, a cross plate is inserted on one side of the driving column, a dial plate is fixed on the side, away from the driving column, of the cross plate, a placing cavity is formed in the side, close to the dial plate, of the fixed center frame, the dial plate can be inserted into the placing cavity, a driving rod is fixed on the other side of the driving column, a first bevel gear is fixed on the side, away from the driving column, of the driving rod, a second bevel gear is meshed on the first bevel gear, the second bevel gear is fixed on a first connecting rod, one end of the first connecting rod is rotationally connected to the inner wall of the driving cavity, a universal joint is fixed on the other end of the first connecting rod, a second connecting rod is fixed on the other end of the universal joint, the other end of the second connecting rod is rotationally connected to the inner wall of the driving cavity, and a circular gear is fixed on the first connecting rod and the second connecting rod. The upper and lower sides of each circular gear are respectively meshed with a rack, the racks on the upper sides of the circular gears are fixed on the side frames on the rear part of the fixed center frame, and the racks on the lower sides of the circular gears are fixed on the side frames on the front part of the fixed center frame.

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