CN209358301U - A kind of Combined permanent magnet - Google Patents
A kind of Combined permanent magnet Download PDFInfo
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- CN209358301U CN209358301U CN201920066533.8U CN201920066533U CN209358301U CN 209358301 U CN209358301 U CN 209358301U CN 201920066533 U CN201920066533 U CN 201920066533U CN 209358301 U CN209358301 U CN 209358301U
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- permanent magnet
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Abstract
The utility model discloses a kind of Combined permanent magnet.It includes permanent magnetic monomers, permanent magnetic monomers are in rectangle, and permanent magnetic monomers are equipped with groove, and permanent magnetic monomers surface is equipped with insulation adhesive layer, several permanent magnetic monomers are fixed together into permanent magnet by the adhesive layer that insulate, and at least one straight line strip groove is combined between the groove in permanent magnetic monomers.The utility model is designed reasonably, structure are simple, by the way that small size, surface insulation permanent magnetic monomers are combined into large volume permanent magnet, after making permanent magnet be divided into small permanent magnetic monomers, the relative resistivities increase of permanent magnet reduces the eddy current of permanent magnet, and the loss for generating permanent magnet current vortex is reduced；And the magnetic screen sheath by installing one layer of well conducting in permanent magnetism external surface, partition further lower the loss of permanent magnet, reach low-loss purpose since high-frequency harmonic generates eddy current effect to permanent magnet.
Description
Technical field
The utility model relates to permanent magnet technical fields, more particularly, to a kind of Combined permanent magnet.
Background technique
Currently, well known sintered permanent magnet has many advantages, such as that residual magnetization high energy product is big, it is widely used in various automobiles
With in magneto.The features such as automobile magneto has the big revolving speed of power high, and running environment is severe, motor generally uses interior
Strip permanent magnet scheme is set, permanent magnet is generally made into the rectangular permanent magnet of certain length, then muti-piece permanent magnet is gradually installed
Into the corresponding slot of rotor.
But traditional manufacturing method has the disadvantage that the eddy-current loss of 1, permanent magnet is big；Sintered permanent magnet is due to electricity
Conductance is high, and the eddy-current loss of permanent magnet and the size of permanent magnet are directly proportional, and eddy-current loss is big when permanent magnet is individually larger.2, permanent magnetism
The protective treatment of body surface face is difficult and pollution is big；The surface of permanent magnet generally uses at the surfacecti proteons such as zinc-plated, nickel plating, spraying epoxy
Reason mode.Several processing modes need special equipment just to can be carried out processing, and all have heavy metal containing sewage or the volatilization of stupid class
It will cause pollution.3, permanent magnet material utilization rate is low；Existing permanent magnet can only be fabricated to the rectangular permanent magnet of certain length, add
A large amount of leftover pieces can be generated in work, can only be used as waste disposal, and waste is big, causes stock utilization low.4, permanent magnet is installed
It is costly；Permanent magnet needs to be fabricated to small size, causes every motor to need using many monomer permanent magnets, in installation permanent magnet
When improve installation difficulty, need a large amount of set-up time that mounting cost is caused to improve.5, permanent magnet is at high cost；Due to permanent magnet
It needs to carry out surfacecti proteon processing, and stock utilization is low, transport protection packaging material causes permanent magnet at high cost more.
Utility model content
The purpose of the utility model is to provide a kind of Combined permanent magnets for reducing eddy-current loss.
What the purpose of this utility model was realized in.
A kind of Combined permanent magnet, including permanent magnetic monomers, permanent magnetic monomers are in rectangle, and permanent magnetic monomers are equipped with groove, permanent magnetism
Monomer surface is equipped with insulation adhesive layer, and several permanent magnetic monomers are fixed together into permanent magnet, permanent magnetism by the adhesive layer that insulate
At least one straight line strip groove is combined between groove on monomer.
The above technical solution can be further improved as follows.
More specific scheme, the groove are arranged on the length direction of permanent magnetic monomers, in the width direction, permanent magnetic monomers it
Between be arranged side by side in the width direction.
More specific scheme, further includes magnetic screen sheath, and magnetic screen sheath is covered in the exhausted of the permanent magnetic monomers being fixed together
Outside edge adhesive layer, and the two poles of the earth of permanent magnet are exposed.
More specific scheme, the magnetic screen sheath are in shoe, and the both ends of the magnetic screen sheath of shoe are fixed on straight
In wire length groove.
More specific scheme, the magnetic screen jacket thickness is between 0.35mm-0.2mm, and magnetic screen sheath is by non-magnetic
High conductivity metal be made, such as copper sheet.
More specific scheme further includes the second permanent magnetic monomers, and the second permanent magnetic monomers are in rectangle, and outer surface is smooth, and second
Permanent magnetic monomers surface is equipped with the insulation adhesive layer, and the second permanent magnetic monomers are fixed on permanent magnetic monomers length side by the adhesive layer that insulate
To at least one end on.
More specific scheme, the insulation adhesive layer are epoxy resin adhesive layer.
More specific scheme, the depth of groove is 0.5mm, width 2mm.
More specific scheme, the insulation adhesive layer include insulating layer and adhesive layer, and insulating layer is arranged in permanent magnetic monomers table
On face, adhesive layer is arranged on surface of insulating layer.
The beneficial effects of the utility model are as follows:
(1) the utility model is designed reasonably, structure are simple, by combining small size, surface insulation permanent magnetic monomers
At large volume permanent magnet, so that the relative resistivities increase of permanent magnet reduces forever after so that permanent magnet is divided into small permanent magnetic monomers
The eddy current of magnet, the loss for generating permanent magnet current vortex are reduced；And by installing one layer of conduction in permanent magnetism external surface
Good magnetic screen sheath, partition further lower the loss of permanent magnet since high-frequency harmonic generates eddy current effect to permanent magnet,
Reach low-loss purpose.
(2) monomer permanent magnet is rectangle, and due to small in size, when sintering is unlikely to deform, and only need to simply polish nothing after molding
Linear cutter need to be being carried out, reduce leftover pieces consumption and machining period in permanent magnet manufacturing process, and small size is forever
Magnetic monomer manufacturing cost is low, also reduces the requirement to manufacturing equipment, and processing technology is also simple.
(3) permanent magnetic monomers and the second permanent magnetic monomers, which fit through magnetic screen sheath and can combine, is made super large shape permanent magnet,
Combination diversification, can further dividing permanent-magnet body, to reduce eddy-current loss, and make to be easily installed in motor manufacturing and automatically
Change operation, reduces the set-up time.
(4) permanent magnet after combining is protected by magnetic screen sheath, and since magnetic screen sheath uses copper sheet, copper sheet passes through electricity
Surfacecti proteon of swimming is handled, and is produced more environmentally friendly.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of monomer permanent magnet in the utility model.
Fig. 2 is the structural schematic diagram of second comonomer permanent magnet in the utility model.
Fig. 3 is the structural schematic diagram of magnetic screen sheath in the utility model.
Fig. 4 is the combining structure schematic diagram of permanent magnet in embodiment one.
Fig. 5 is the combining structure schematic diagram of permanent magnet in embodiment two.
Fig. 6 is left push top and the right schematic diagram having a haircut to sheath edge sealing in embodiment.
Fig. 7 is pressure head in embodiment to the schematic diagram of sheath edge sealing.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and embodiments:
Embodiment one, referring to shown in Fig. 1, Fig. 3, Fig. 4, a kind of Combined permanent magnet, including permanent magnetic monomers 1 and magnetic screen are protected
Set 3, permanent magnetic monomers 1 are in rectangle, in permanent magnetic monomers 1 in the longitudinal direction, be equipped with groove 11,1 table of permanent magnetic monomers in the width direction
Face is equipped with insulation adhesive layer (not shown), and several permanent magnetic monomers 1 are arranged side by side in the width direction and pass through insulating cement
Adhesion coating is fixed together into permanent magnet, and straight line strip groove, magnetic screen sheath are combined between the groove 11 in permanent magnetic monomers 1
3 sets outside the insulation adhesive layer for the permanent magnetic monomers 1 being fixed together, and the two poles of the earth of permanent magnet are exposed.
In the present embodiment, insulation adhesive layer includes insulating layer and adhesive layer, and insulating layer is arranged on 1 surface of permanent magnetic monomers,
Adhesive layer is arranged on surface of insulating layer, and insulation adhesive layer is preferably epoxy resin adhesive layer, is provided simultaneously with insulation and stickiness, i.e.,
Insulating layer and adhesive layer are merged into one layer, reduce manufacturing procedure.
11 depth of groove is 0.5mm, width 2mm.The magnetic screen sheath 3 is in shoe, and magnetic screen sheath 3 is not by
The high conductivity metal of magnetic conduction is made, and thickness is between 0.35mm-0.2mm, it is preferred that and magnetic screen sheath 3 is made of copper sheet,
And copper sheet surface passes through electrophoresis protective treatment.
Referring to shown in Fig. 6 and Fig. 7, the permanent magnet after combination is placed in the magnetic screen sheath 3 of shoe, is sealed by tooling
Side, wherein tooling includes left push top 4, right push top 5 and pressure head 6, and left push top 4 and right push top 5 push at the both ends of shoe sheath forever to
At the straight line strip groove 11 of magnet, two end in contact of magnetic screen sheath 3 form protrusion 31, and protrusion 31 is pressed into straight line by pressure head 6
In strip groove, so that the both ends of magnetic screen sheath 3 are fixed in straight line strip groove, permanent magnet is finally sent into baking oven
Heating cure, and magnetize to cured permanent magnet, obtain permanent magnet finished product.
Embodiment two, referring to fig. 2 and shown in Fig. 5, the difference with embodiment one is: it further include the second permanent magnetic monomers 2,
Second permanent magnetic monomers 2 are in rectangle, and outer surface is smooth, and 2 surface of the second permanent magnetic monomers is equipped with the insulation adhesive layer, the second permanent magnetism
On the end at the both ends that monomer 2 is fixed on 1 length direction of permanent magnetic monomers by insulation adhesive layer, 3 sets of magnetic screen sheath in permanent magnetism
Outside monomer 1 and two permanent magnetic monomers 1, i.e., permanent magnetic monomers 1, two permanent magnetic monomers 1 and magnetic screen sheath 3 are together to form permanent magnet.Group
The permanent magnet of equal volume is synthesized, two scheme of embodiment can be at more permanent magnetic monomers 1 and the second permanent magnetic monomers 2, permanent magnetism list
Body 1 and 2 volume of the second permanent magnetic monomers are smaller, are further reduced eddy-current loss.
Embodiment three, the difference with embodiment one are: several permanent magnetic monomers 1 are two rows of, 1 edge of row's permanent magnetic monomers
Width direction be arranged side by side, two rows of permanent magnetic monomers 1 with one end of length direction relative to, by insulate adhesive layer be fixed together into
Permanent magnet, is combined into two straight line strip grooves between the groove 11 in permanent magnetic monomers 1, and 3 sets of magnetic screen sheath is after combining forever
Outside magnet, and the both ends of magnetic screen sheath 3 are placed in one in any straight line strip groove.
Claims (9)
1. a kind of Combined permanent magnet, it is characterised in that: including permanent magnetic monomers, permanent magnetic monomers are in rectangle, and permanent magnetic monomers are equipped with
Groove, permanent magnetic monomers surface are equipped with insulation adhesive layer, and several permanent magnetic monomers are fixed together into forever by the adhesive layer that insulate
Magnet is combined at least one straight line strip groove between the groove in permanent magnetic monomers.
2. Combined permanent magnet according to claim 1, it is characterised in that: length direction of the groove in permanent magnetic monomers
Above, it is arranged in the width direction, is arranged side by side in the width direction between permanent magnetic monomers.
3. Combined permanent magnet according to claim 1, it is characterised in that: further include magnetic screen sheath, magnetic screen sheath
It covers outside the insulation adhesive layer for the permanent magnetic monomers being fixed together, and the two poles of the earth of permanent magnet are exposed.
4. Combined permanent magnet according to claim 3, it is characterised in that: the magnetic screen sheath is in shoe, shoe
The both ends of magnetic screen sheath are fixed in straight line strip groove.
5. Combined permanent magnet according to claim 3, it is characterised in that: the magnetic screen jacket thickness is in 0.35mm-
Between 0.2mm, magnetic screen sheath is made of non-magnetic high conductivity metal.
6. Combined permanent magnet according to claim 1, it is characterised in that: further include the second permanent magnetic monomers, the second permanent magnetism
Monomer is in rectangle, and outer surface is smooth, and the second permanent magnetic monomers surface is equipped with the insulation adhesive layer, and the second permanent magnetic monomers pass through exhausted
Edge adhesive layer is fixed at least one end of permanent magnetic monomers length direction.
7. Combined permanent magnet according to claim 1, it is characterised in that: the insulation adhesive layer is epoxy resin gluing
Layer.
8. Combined permanent magnet according to claim 1, it is characterised in that: the depth of groove is 0.5mm, width is
2mm。
9. Combined permanent magnet according to claim 1, it is characterised in that: the insulation adhesive layer includes insulating layer and glue
Adhesion coating, insulating layer are arranged on permanent magnetic monomers surface, and adhesive layer is arranged on surface of insulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920066533.8U CN209358301U (en) | 2019-01-16 | 2019-01-16 | A kind of Combined permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920066533.8U CN209358301U (en) | 2019-01-16 | 2019-01-16 | A kind of Combined permanent magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209358301U true CN209358301U (en) | 2019-09-06 |
Family
ID=67803034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920066533.8U Active CN209358301U (en) | 2019-01-16 | 2019-01-16 | A kind of Combined permanent magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209358301U (en) |
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2019
- 2019-01-16 CN CN201920066533.8U patent/CN209358301U/en active Active
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