CN205544673U - A neodymium iron boron ends of earth magnetic ring for driving motor - Google Patents

Abstract

The utility model relates to a neodymium iron boron ends of earth magnetic ring for driving motor, including the magnetic pole, total eight pairs of magnetic pole, the magnetic pole select for use the neodymium iron boron to make, the transversal ring -type of personally submitting of magnetic pole, its characterized in that: the middle part of magnetic pole forms the outside and personally submits curved first cyclic annular step and the cyclic annular step of second to the evagination, the cyclic annular step of second in the outside is established on the first cyclic annular step of inlayer, the terminal surface is in on the same horizontal plane under the cyclic annular step of the lower terminal surface of first cyclic annular step and second, the utility model discloses a neodymium iron boron ends of earth magnetic ring for driving motor structural design is reasonable, and the magnetic ring designs into 8 pairs of magnetic poles makes the magnetic ring possess comparatively intensive field to obtain stronger magnetic force, the design of multilayer echelonment makes the magnetic field at magnetic ring middle part show to strengthen, the magnetic ring volume can also be reduced, ndfeb magnets material's quantity is reduced to reduce the size of the electric machine, reduction in production cost.

Description

For driving the neodymium iron boron ends of the earth magnet ring of motor

Technical field

This utility model belongs to the parts manufacturing technology field of motor, electronic circuit, is specifically related to a kind of for driving motor Neodymium iron boron ends of the earth magnet ring.

Background technology

Magnet ring is important parts in motor, is generally used for driving motor to coordinate stator modules together as rotor module Use, on the more glass jacking system being used in frequency conversion automobile, electric motor car etc., but the shape of existing magnet ring, magnetic pole list One, cause the magnetic of magnet ring to be difficult to play maximum effect, and existing motor magnet ring uses ferrite, alnico alloy mostly Making Deng material, the residual flux density of ferrite permanent-magnet is the highest, and the coercivity of Al-Ni-Co permanent magnet is on the low side, and their use is by a lot The restriction of factor, is difficult to the motor of special dimension, and procedure of processing is complicated, and waste is serious, and production cost is high.

For above-mentioned technical problem, therefore need to improve.

Utility model content

This utility model is to overcome above-mentioned defect of the prior art, it is provided that a kind of simple in construction, easy to use, reduces magnetic Ring body amasss, and reduces the neodymium iron boron ends of the earth magnet ring for driving motor of the consumption of NdFeB material.

In order to reach object above, this utility model be the technical scheme is that the neodymium iron boron ends of the earth magnet ring for driving motor, Including magnetic pole, it is eight right that described magnetic pole has, and described magnetic pole selects neodymium iron boron to make, and the cross section of magnetic pole is ring-type in fan, institute State the middle part convex of magnetic pole and form the first curved circular step of lateral surface and the second circular step；The second of outside is ring-type Step is located on the first circular step of internal layer；Lower surface and the second circular step lower surface of the first circular step are in same water In plane；The upper surface of the first circular step parallel with the upper surface of magnetic pole and retain distance, the lower surface of the first circular step with The lower surface of magnetic pole is parallel and retains distance；The upper surface of the second circular step is parallel with the upper surface of magnetic pole and retains distance, the The lower surface of two circular steps is parallel with the lower surface of magnetic pole and retains distance；Eight pairs of magnetic poles are along the circumferential direction with the extremely staggered patch of N, S Close arrangement and form the neodymium iron boron ends of the earth magnet ring of a hollow cylindrical.

As a kind of preferred version of the present utility model, the height of described first circular step is 55mm, and thickness is 3mm, second The height of circular step is 30mm, and thickness is 3mm.

As a kind of preferred version of the present utility model, the thickness of described neodymium iron boron ends of the earth magnet ring is 5mm, and height is 95mm, magnetic Ring diameter is 40mm.

As a kind of preferred version of the present utility model, the upper surface of described first circular step and the upper end of neodymium iron boron ends of the earth magnet ring The distance in face is 20mm, and the lower surface of the first circular step is 20mm with the distance of the lower surface of neodymium iron boron ends of the earth magnet ring, the second ring The upper surface of shape step is 15mm with the distance of the upper surface of the first circular step, and the lower surface of the second circular step is ring-type with first The lower surface of step overlaps.

Compared with prior art, this utility model has the following technical effect that this utility model is for driving the neodymium iron boron eight of motor Pole magnet ring structure is reasonable in design, and magnet ring is designed to 8 pairs of magnetic poles makes magnet ring possess the most intensive field, thus obtains stronger magnetic force； The design of multi-step shape makes the magnetic field in the middle part of magnet ring be obviously enhanced；Magnet ring volume can also be reduced, reduce the use of NdFeB material Amount, thus reduce motor volume, reduce production cost；NdFeB material is used to make magnet ring possess the strongest remanence strength Br With magnetic energy product (BH) max, greatly strengthen the magnetic property of magnet ring；Additionally, the production cost of Nd-Fe-B permanent magnetic is than similar rare earth forever Magnetic is low, can be widely used in industry, civilian production.

Accompanying drawing explanation

Fig. 1 is this utility model embodiment three-dimensional structure diagram.

Fig. 2 is this utility model embodiment main TV structure figure.

Fig. 3 is this utility model embodiment plan structure figure.

Fig. 4 is this utility model embodiment plan structure figure.

Fig. 5 is this utility model embodiment main TV structure figure.

Reference in figure: magnetic pole 1, the first circular step 2, the second circular step 3.

Detailed description of the invention

Below in conjunction with the accompanying drawings this utility model embodiment is elaborated.

Embodiment: as Figure 1-5, the present embodiment is applied to drive the neodymium iron boron ends of the earth magnet ring of motor, and this magnet ring includes that 8 is right Magnetic pole 1, magnetic pole 1 selects neodymium iron boron to make, and the cross section of magnetic pole 1 is ring-type in fan, the middle part convex of magnetic pole 1 and outside being formed The first circular step 2 and the second circular step 3 that side is curved；Second circular step 3 in outside is located at the first ring of internal layer On shape step 2；Lower surface and second circular step 3 lower surface of the first circular step 2 are in same level；Eight pairs of magnetic Pole 1 along the circumferential direction forms the neodymium iron boron ends of the earth magnet ring of a hollow cylindrical with the extremely staggered laminating arrangement of N, S.Use first The design of the multi-step shape of circular step 2 and the second circular step 3 makes the magnetic field in the middle part of magnet ring be obviously enhanced, it is also possible to reduce Magnet ring volume, reduces the consumption of NdFeB material, thus reduces motor volume, reduces production cost.

Magnet ring is the pole anisotropy magnet 1 taking radial multi-pole to be orientated, and magnet ring the most circumferentially imposes the magnetic field that N, S extremely interlock Magnet is carried out multipole orientation, sets 8 pairs of magnetic poles 1 altogether.

The height of the first circular step 2 is 55mm, and thickness is 3mm, and the height of the second circular step 3 is 30mm, and thickness is 3mm.

The thickness of the most non-protruding part of thickness of neodymium iron boron ends of the earth magnet ring is 5mm, a height of 95mm, a diameter of 40mm of magnet ring；First The distance of the upper surface of the upper surface of circular step 2 and neodymium iron boron ends of the earth magnet ring is 20mm, the lower surface of the first circular step 2 with The distance of the lower surface of neodymium iron boron ends of the earth magnet ring is 20mm, the upper surface of the second circular step 3 and the upper end of the first circular step 2 The distance in face is 15mm, and the lower surface of the second circular step 3 overlaps with the lower surface of the first circular step 2.

The neodymium iron boron 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 the most intensive magnetic , thus obtaining stronger magnetic force, the design of multi-step shape makes the magnetic field in the middle part of magnet ring be obviously enhanced, it is also possible to reduce magnet ring Volume, reduces the consumption of NdFeB material, thus reduces motor volume, reduces production cost；NdFeB material is used to make magnet ring Possess the highest remanence strength Br and magnetic energy product (BH) max, greatly strengthen the magnetic property of magnet ring.Additionally, neodymium iron boron is forever The production cost of magnetic is lower than similar rare earth permanent magnet, can be widely used in industry, civilian production.

Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this utility model.Right The multiple amendment of these embodiments will be apparent from for those skilled in the art, as defined herein typically Principle can realize in the case of without departing from spirit or scope of the present utility model in other embodiments；Therefore, this practicality The novel the embodiments shown herein that is not intended to be limited to, and be to fit to and principles disclosed herein and features of novelty phase The widest consistent scope.

Although the most more employing reference in figure: magnetic pole 1, the first circular step 2, the second circular step 3 term such as grade, But it is not precluded from using the probability of other term.Use these terms to be only used to more easily and describe and explain this practicality newly The essence of type；It is all contrary with this utility model spirit for being construed as any additional restriction.

Claims (4)

1., for driving the neodymium iron boron ends of the earth magnet ring of motor, including magnetic pole (1), described magnetic pole (1) has eight right, described magnetic Pole (1) selects neodymium iron boron to make, and the cross section of magnetic pole (1) is ring-type in fan, it is characterised in that: the middle part of described magnetic pole (1) Convex and form curved the first circular step (2) of lateral surface and the second circular step (3)；Second ring-type of outside Rank (3) are located on first circular step (2) of internal layer；The lower surface of the first circular step (2) and the second circular step (3) Lower surface is in same level；The upper surface of the first circular step (2) parallel with the upper surface of magnetic pole (1) and retain away from From, the lower surface of the first circular step (2) is parallel with the lower surface of magnetic pole (1) and retains distance；Second circular step (3) Upper surface parallel with the upper surface of magnetic pole (1) and retain distance, the lower surface of the second circular step (3) and magnetic pole (1) Lower surface is parallel and retains distance；Eight pairs of magnetic poles (1) along the circumferential direction form a hollow with the extremely staggered laminating arrangement of N, S Columned neodymium iron boron ends of the earth magnet ring.

It is the most according to claim 1 for driving the neodymium iron boron ends of the earth magnet ring of motor, it is characterised in that: described first circular step (2) height is 55mm, and thickness is 3mm, and the height of the second circular step (3) is 30mm, and thickness is 3mm.

It is the most according to claim 1 for driving the neodymium iron boron ends of the earth magnet ring of motor, it is characterised in that: described first circular step (2) upper surface is 20mm with the distance of the upper surface of neodymium iron boron ends of the earth magnet ring, the lower surface of the first circular step (2) and neodymium The distance of the lower surface of ferrum boron ends of the earth magnet ring is 20mm, the upper surface of the second circular step (3) and the first circular step (2) The distance of upper surface is 15mm, and the lower surface of the second circular step (3) overlaps with the lower surface of the first circular step (2).

4. according to the neodymium iron boron ends of the earth magnet ring for driving motor described in claim 1 or 3, it is characterised in that: described neodymium iron boron eight The thickness of pole magnet ring is 5mm, and height is 95mm, a diameter of 40mm of magnet ring.