CN205881613U

CN205881613U - A ferrite ends of earth magnetic ring for special -shaped sensor

Info

Publication number: CN205881613U
Application number: CN201620344092.XU
Authority: CN
Inventors: 杨维铭; 杨维林; 蔡正荣; 王正良; 汪俊峰
Original assignee: Anji Hong Ming-Magnetic Equipment Co Ltd
Current assignee: Anji Hong Ming-Magnetic Equipment Co Ltd
Priority date: 2016-04-22
Filing date: 2016-04-22
Publication date: 2017-01-11
Anticipated expiration: 2026-04-22

Abstract

The utility model provides a ferrite ends of earth magnetic ring for special -shaped sensor, including cyclic annular magnet, cyclic annular magnet includes 8 pairs of magnetic poles of following branch equipartitions such as its circumference, is equipped with first multilayer bulge loop and second multilayer bulge loop outside the top of cyclic annular magnet and outside the bottom separately, the utility model discloses making the magnetic field reinforcing at magnetic ring both ends, using ferrite material to make the magnetic ring possess very strong surplus intensity of overflow tank and coercive force, strengthened the magnetism of magnetic ring greatly, the manufacturing cost of ferrite permanent magnetism is lower than tombarthite permanent magnetism of the same kind, can widely apply in industry, civilian production.

Description

A kind of ferrite ends of the earth magnet ring for abnormity sensor

Technical field

This utility model relates to a kind of ferrite ends of the earth magnet ring for abnormity sensor.

Background technology

Magnet ring is important parts in motor, sensor, electronic circuit, and described ferrite ends of the earth magnet ring is used for Abnormity sensor coordinates stator modules to be used together as rotor module, the more glass being used in frequency conversion automobile, electric motor car etc. On jacking system, but the shape of existing magnet ring, magnetic pole are single, cause the magnetic of magnet ring to be difficult to play maximum effect, and Existing sensor magnet ring uses neodymium iron boron, aluminum nickel cobalt material to make mostly, and the residual flux density of Nd-Fe-B permanent magnetic is the highest, aluminum nickel cobalt The coercivity of permanent magnetism is on the low side, and their use is limited by several factors, is difficult to the sensor field of special dimension, and Procedure of processing is complicated, and production cost is high.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of ferrite ends of the earth magnet ring for abnormity sensor, Its simple in construction, easy to use.

This utility model solves technical problem and be the technical scheme is that a kind of ferrite eight for abnormity sensor Pole magnet ring, including annular magnet, described annular magnet includes along 8 pairs of magnetic poles that its circumference decile is uniform, described annular magnet Top outer and bottom outside are each provided with the first multilamellar bulge loop and the second multilamellar bulge loop, described first multilamellar bulge loop and described Two multilamellar bulge loops are symmetrical relative in the middle part of described annular magnet, and described first multilamellar bulge loop and described second multilamellar bulge loop each wrap Including inside and outside two-layer bulge loop, wherein the thickness of outer layer bulge loop is more than internal layer bulge loop.

As a kind of preferred version of the present utility model, in described 8 pairs of magnetic poles, N, S extreme direction phase of adjacent two pairs of magnetic poles Instead.

As a kind of preferred version of the present utility model, described first multilamellar bulge loop and the outer layer of described second multilamellar bulge loop The end face of bulge loop flushes with upper surface and the lower surface of annular magnet respectively.

As a kind of preferred version of the present utility model, the height of described internal layer bulge loop and described outer layer bulge loop is 10mm, it is 3mm that described internal layer bulge loop protrudes from the thickness of described annular magnet, and described outer layer bulge loop protrudes from described internal layer bulge loop Thickness be 3mm.

As a kind of preferred version of the present utility model, the thickness of described annular magnet is 5mm, and a height of 60mm, magnet ring is straight Footpath is 50mm.

Compared with prior art the beneficial effects of the utility model are: magnet ring structure design in the ends of the earth of the present utility model is closed Reason, is designed to 8 pairs of magnetic poles and makes magnet ring possess stronger magnetic force, and stair-stepping design makes the magnetic field at magnet ring two ends strengthen, and uses ferrum Ferrite makes magnet ring possess the strongest remanence strength and coercivity, greatly strengthen the magnetic of magnet ring, additionally, ferrite The production cost of permanent magnetism is lower than similar rare earth permanent magnet, can be widely used in industry, civilian production.

Accompanying drawing explanation

Fig. 1 is the structural representation of the ferrite ends of the earth magnet ring for abnormity sensor of the present utility model.

Fig. 2 is the side view of Fig. 1.

Fig. 3 is the top view of Fig. 1.

Label in figure: 1, annular magnet；2, the outer layer bulge loop of the first multilamellar bulge loop；3, the internal layer of the first multilamellar bulge loop is convex Ring；4, the internal layer bulge loop of the second multilamellar bulge loop；5, the outer layer bulge loop of the second multilamellar bulge loop.

Detailed description of the invention

Below in conjunction with embodiment and accompanying drawing, detailed description of the invention of the present utility model is described in further detail.Below Embodiment is used for illustrating this utility model, but is not limited to scope of the present utility model.

As it is shown in figure 1, the ferrite ends of the earth magnet ring for abnormity sensor of the present utility model, including annular magnet 1, ring Shape magnet 1 includes 8 pairs of magnetic poles, and 8 pairs of magnetic poles are uniform along the circumferential decile of annular magnet 1, and the arrangement mode of 8 pairs of magnetic poles be N, S pole is staggered, and N, S between the most adjacent two magnetic poles are the most contrary.

The ferrite ends of the earth of the present utility model magnet ring is the pole anisotropy magnet taking radial multi-pole to be orientated, the most circumferentially Magnet ring is imposed the magnetic field that N, S extremely interlock magnet is carried out multipole orientation, set 8 pairs of magnetic poles altogether.

The top outer of annular magnet 1 and bottom outside are each provided with the first multilamellar bulge loop and the second multilamellar bulge loop, and first Multilamellar bulge loop includes its outer layer bulge loop 2 and its internal layer bulge loop 3, and the second multilamellar bulge loop includes its outer layer bulge loop 5 and its internal layer bulge loop 4, the thickness of the outer layer bulge loop 2 of the first multilamellar bulge loop is more than its internal layer bulge loop 3, the thickness of the outer layer bulge loop 5 of the second multilamellar bulge loop More than its internal layer bulge loop 4.

First multilamellar bulge loop and the second multilamellar bulge loop are relative to the middle section (i.e. middle part on height) of annular magnet 1 Be symmetrical arranged, the end face of the outer layer bulge loop 2 of described first multilamellar bulge loop and the outer layer bulge loop 5 of described second multilamellar bulge loop respectively with Upper surface and the lower surface of annular magnet 1 flush.

The height of the first multilamellar bulge loop and the internal layer bulge loop of the second multilamellar bulge loop and described outer layer bulge loop is 10mm, described It is 3mm that internal layer bulge loop protrudes from the thickness of described annular magnet, and described outer layer bulge loop protrudes from the thickness of described internal layer bulge loop and is 3mm。

The thickness (thickness of the most non-protruding part) of annular magnet 1 itself is 5mm, a height of 60mm, a diameter of 50mm of magnet ring.

Arranging at magnetic pole, annular magnet 1 and the first multilamellar bulge loop and the second multilamellar bulge loop are same, say, that The 8 pairs of magnetic poles are provided on annular magnet 1 and the first multilamellar bulge loop and the second multilamellar bulge loop for overall ends of the earth magnet ring also Uniform along its circumference decile.

The ends of the earth of the present utility model magnet ring structure is reasonable in design, is designed to 8 pairs of magnetic poles and makes magnet ring possess stronger magnetic force, rank The design of scalariform makes the magnetic field at magnet ring two ends strengthen, and uses Ferrite Material to make magnet ring possess the strongest remanence strength and rectify Stupid power, greatly strengthen the magnetic of magnet ring, additionally, the production cost of ferrite permanent-magnet is lower than similar rare earth permanent magnet, can answer in a large number For industry, civilian production.

The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art For art personnel, on the premise of without departing from this utility model know-why, it is also possible to make some improvement and deformation, these change Enter and deform and also should be regarded as protection domain of the present utility model.

Claims

1. for a ferrite ends of the earth magnet ring for abnormity sensor, including annular magnet, it is characterised in that: described annular magnet Including the 8 pair magnetic poles uniform along its circumference decile, top outer and the bottom outside of described annular magnet are each provided with more than first Layer bulge loop and the second multilamellar bulge loop, described first multilamellar bulge loop and described second multilamellar bulge loop relative to described annular magnet in the middle part of Symmetry, described first multilamellar bulge loop and described second multilamellar bulge loop each include inside and outside two-layer bulge loop, the wherein thickness of outer layer bulge loop Degree is more than internal layer bulge loop.

A kind of ferrite ends of the earth magnet ring for abnormity sensor the most according to claim 1, it is characterised in that: described 8 To in magnetic pole, N, S extreme direction of adjacent two pairs of magnetic poles is contrary.

3. according to a kind of ferrite ends of the earth magnet ring for abnormity sensor described in claim 1, it is characterised in that: described The end face of the outer layer bulge loop of the first multilamellar bulge loop and described second multilamellar bulge loop respectively with upper surface and the lower surface of annular magnet Flush.

A kind of ferrite ends of the earth magnet ring for abnormity sensor the most according to claim 1, it is characterised in that: in described The height of layer bulge loop and described outer layer bulge loop is 10mm, and it is 3mm that described internal layer bulge loop protrudes from the thickness of described annular magnet, It is 3mm that described outer layer bulge loop protrudes from the thickness of described internal layer bulge loop.

5. according to the ferrite ends of the earth magnet ring described in claim 1, it is characterised in that: the thickness of described annular magnet is 5mm, A height of 60mm, a diameter of 50mm of magnet ring.