CN207542900U - Rotor iron core - Google Patents

Rotor iron core Download PDF

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Publication number
CN207542900U
CN207542900U CN201721438722.0U CN201721438722U CN207542900U CN 207542900 U CN207542900 U CN 207542900U CN 201721438722 U CN201721438722 U CN 201721438722U CN 207542900 U CN207542900 U CN 207542900U
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CN
China
Prior art keywords
permanent magnet
punching
rotor
closed type
open
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CN201721438722.0U
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Chinese (zh)
Inventor
倪祖根
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Kingclean Electric Co Ltd
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Kingclean Electric Co Ltd
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Priority to CN201721438722.0U priority Critical patent/CN207542900U/en
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  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

The utility model discloses a rotor core, include: at least one closed rotor punching sheet group; and at least one group of open type rotor punching sheet groups, wherein the closed type rotor punching sheet groups and the open type rotor punching sheet groups are alternately stacked in the axial direction. According to the utility model discloses, its structural stability when improving rotor output capacity can also further strengthen the rotor has compromise the advantage of open rotor and closed rotor, has avoidd both respective not enough simultaneously again, has wider application prospect.

Description

A kind of rotor core
Technical field
The utility model is related to motor field, more particularly to a kind of rotor core.
Background technology
Motor refers to realize that electric energy conversion or a kind of calutron transmitted, main function are according to the law of electromagnetic induction Driving torque is generated, as electric appliance or the power source of various machineries.Motor can be divided into direct current by its structure and operation principle Machine, asynchronous machine and synchronous motor, and synchronous motor is usually same including permanent magnet synchronous motor, reluctance-synchronous machine and tape Walk motor.
The permanent magnet trough radial outside of built-in permanent magnetic body is there are two types of structure on existing market, it is a kind of be it is open, separately One kind is totally enclosed type and closed type, and open rotor and closed type rotor their advantage and disadvantage are all it is obvious that under equal conditions Open rotor performance is good, and maximum output is high, and maximum output is higher than closed type rotor by 30%, but open core structure is strong Spend it is low, transport or carry engineering in iron core have deformation it is big so as to cause rotor original amount of unbalance, in addition open turn Son stability when running at high speed is poor, and it is high by 3 to avoid closed type rotor for noise when the motor of its structure type being caused to run at high speed ~5Db;And closed type rotor structure stability is preferable and noise is told somebody what one's real intentions are, but its fan-out capability is not so good as open rotor again.
In view of this, it is really necessary to develop a kind of rotor core, to solve the above problems.
Utility model content
For the shortcomings of the prior art, the purpose of this utility model is to provide a kind of rotor core, While improving rotor fan-out capability, additionally it is possible to further enhance the structural stability of rotor, take into account open rotor and closed The advantages of box-like rotor, while evaded the respective deficiency of the two again, there is wider application prospect.
In order to realize above-mentioned purpose according to the present utility model and other advantages, a kind of rotor core is provided, including:
At least one set of closed type rotor punching group;And
At least one set of open rotor punching group,
Wherein, the closed type rotor punching group and the alternately laminated setting in an axial direction of open rotor punching group.
Preferably, the rotor core clamps a closed type rotor punching between multiple open rotor punching groups Group.
Preferably, if the closed type rotor punching group includes the closed type rotor punching that dry plate stacks gradually in an axial direction Piece, every closed type rotor punching include:
Closed type punching ontology;And
The first through hole and multiple first permanent magnet troughs being opened on closed type punching ontology,
Wherein, first through hole is set at the rotation center of closed type punching ontology, and multiple first permanent magnet troughs are in closed type Radial arrangement in the circumferential direction of punching ontology, two neighboring first permanent magnet trough limit the first magnetic positioned between the two Pole is formed with magnetic bridge in first between the inner end of the first permanent magnet trough and first through hole, the outer end of the first permanent magnet trough is with closing Be formed with outer magnetic bridge between the periphery of box-like punching ontology, if dry plate closed type rotor punching be incorporated into one rigidity it is whole Body.
Preferably, if the open rotor punching group includes the open rotor punching that dry plate stacks gradually in an axial direction Piece, every open rotor punching include:
Open punching ontology;And
The second through-hole being opened on open punching ontology and multiple second permanent magnet troughs,
Wherein, the second through-hole is set at the rotation center of open punching ontology, and multiple second permanent magnet troughs are open Radial arrangement in the circumferential direction of punching ontology, two neighboring second permanent magnet trough limit the second magnetic positioned between the two Pole is formed with magnetic bridge in second, the outer end connection of the second permanent magnet trough between the inner end of the second permanent magnet trough and the second through-hole Have towards extraneous every flux path, if dry plate open rotor punching is incorporated into a rigidity entirety.
Preferably, closed type rotor punching group described in several groups replaces with several groups of open rotor punching groups axial It is whole that ground is combined into a rigidity so that and first through hole and the second through-hole are interconnected the shaft through-hole to be formed for installing shaft, And the first permanent magnet trough is interconnected into the permanent magnet mounting groove for installing permanent magnet with the second permanent magnet trough.
Preferably, at least one first shoulder is formed in the circumferential end faces of the first permanent magnet trough;And second permanent magnet At least one second shoulder is formed in the circumferential end faces of slot.
Preferably, the inner bulge of the first shoulder along the first permanent magnet trough is in a right angle so that the first permanent magnet trough Outer end is formed with the first outer magnet isolation tank;The inner bulge of second shoulder along the second permanent magnet trough is in a right angle so that the second permanent magnetism The outer end of body slot is formed with the second outer magnet isolation tank.
Preferably, there are two the first shoulder (1121) is set, the first permanent magnet trough (112) both sides respectively symmetrically are formed in In circumferential end faces;There are two second shoulder (1221) is set, it respectively symmetrically is formed in the second permanent magnet trough (122) both sides circumferential direction end On face.
Preferably, the inner end of the first permanent magnet trough is formed with magnet isolation tank in first, and the inner end of the second permanent magnet trough is formed There is magnet isolation tank in second.
Preferably, the width dimensions of magnet isolation tank circumferentially are more than the broad-ruler of the first permanent magnet trough circumferentially in first Very little, the width dimensions of magnet isolation tank circumferentially are more than the width dimensions of the second permanent magnet trough circumferentially in second.
Preferably, be formed on the radial end face of magnet isolation tank in first radially outside protrusion in hold out against end.
Preferably, the groove that radially inside is recessed is formed in second on the radial end face of magnet isolation tank.
Compared with prior art, advantage is the utility model:While rotor fan-out capability is improved, additionally it is possible to The advantages of further enhancing the structural stability of rotor, having taken into account open rotor and closed type rotor, while evaded two again The respective deficiency of person has wider application prospect.
Description of the drawings
Fig. 1 is the stereogram according to rotor core described in the utility model;
Fig. 2 is the vertical view according to closed type rotor punching in rotor core described in the utility model;
Fig. 3 is the vertical view according to open rotor punching in rotor core described in the utility model.
Reference sign:
1- rotor cores;
11- closed type rotor punchings, 12- open rotor punchings, 13- is every flux bore;
111- first through hole, the first permanent magnet troughs of 112-, magnetic bridge in 113- first, the first magnetic poles of 1114-
The outer magnetic bridges of 115-, 116- first it is outer every in magnetic air bridges, 117- first every magnetic air bridges, 118- closed type punchings Ontology;
The second through-holes of 121-, the second permanent magnet troughs of 122-, magnetic bridge in 123- second, the second magnetic poles of 1214- 125- is every magnetic Access, 126- second it is outer every in magnetic air bridges, 127- second every magnetic air bridges, the open punching ontologies of 128-;
The first shoulders of 1121- hold out against end in 1171-;
The second shoulders of 1221-, 1271- grooves.
Specific embodiment
The following describes the utility model in further detail with reference to the accompanying drawings, the aforementioned and other mesh of the utility model , feature, aspect and advantage will be apparent, to enable those skilled in the art can be real according to this with reference to specification word It applies.In the accompanying drawings, for clarity, shape and size can be amplified, and identical attached drawing mark will be used in all figures Remember to indicate the same or similar component.In the following description, such as forepart, back, rear portion, the left side, the right, top, bottom, For the words such as top, lower part are just for structure distribution as shown in FIG. 1 to 3.Particularly, " height " is equivalent to from top To the size of bottom, " width " is equivalent to size from left to right, and " depth " is equivalent to vertical size.These phases It is for convenience to term and is usually not intended to need specifically to be orientated.Term (the example be related to being attached, couple etc. Such as, " connection " and " attachment ") refer to these structures by intermediate structure is fixed directly or indirectly to one another or is attached relationship and Movable or rigidly attached or relationship, unless otherwise clearly stating.
With reference to Fig. 1, rotor core 1 includes:
At least one set of closed type rotor punching group;And
At least one set of open rotor punching group,
Wherein, the closed type rotor punching group and the alternately laminated setting in an axial direction of open rotor punching group.
In the application one side embodiment, the rotor core 1 clamps one between multiple open rotor punching groups A closed type rotor punching group.
As shown in Fig. 2, if the closed type rotor punching group includes the closed type rotor punching that dry plate stacks gradually in an axial direction Piece 11, every closed type rotor punching 11 include:
Closed type punching ontology 118;And
The first through hole 111 and multiple first permanent magnet troughs 112 being opened on closed type punching ontology 118,
Wherein, first through hole 111 is set at the rotation center of closed type punching ontology 118, multiple first permanent magnet troughs 112 The radial arrangement in the circumferential direction of closed type punching ontology 118, two neighboring first permanent magnet trough 112 are limited positioned at the two Between the first magnetic pole 114, be formed with magnetic bridge in first between the inner end of the first permanent magnet trough 112 and first through hole 111 113, the outer end of the first permanent magnet trough 112 is formed with outer magnetic bridge 115, if dry plate closed type rotor punching 11 is incorporated into one Rigidity is whole.
As shown in figure 3, if the open rotor punching group includes the open rotor punching that dry plate stacks gradually in an axial direction Piece 12, every open rotor punching 12 include:
Open punching ontology 128;And
The second through-hole 121 and multiple second permanent magnet troughs 122 being opened on open punching ontology 128,
Wherein, the second through-hole 121 is set at the rotation center of open punching ontology 128, multiple second permanent magnet troughs 122 The radial arrangement in the circumferential direction of open punching ontology 128, two neighboring second permanent magnet trough 122 are limited positioned at the two Between the second magnetic pole 124, be formed with magnetic bridge in second between the inner end of the second permanent magnet trough 122 and the second through-hole 121 123, the outer end of the second permanent magnet trough 122 is communicated with towards extraneous every flux path 125, if 11 phase of dry plate open rotor punching It is whole to be mutually combined into a rigidity.In a preferred embodiment, the first permanent magnet trough 112 and the second permanent magnet trough 122 are in circumferential direction It is upper to be evenly provided with 8 respectively, meanwhile, the first magnetic pole 114 and the second magnetic pole 124 are evenly provided with 8 respectively in the circumferential.The Magnetic bridge 123 limits permanent magnet to radially inner side play in magnetic bridge 113 and second in one, and outer magnetic bridge 115 can prevent Rotor core, to radial outside play, ensure that the rotational stability of rotor core during pivoting, while also reduce Rotational noise, and become permanent magnet and extraneous magnetic flux barrier every flux path 125, it can prevent magnetic flux from revealing, so as to improve Peak power output.In general, rotor punching is generally made of silicon steel sheet or silicon steel sheet.
As shown in FIG. 1 to 3, closed type rotor punching group described in several groups and several groups of open rotor punching groups are in axis To being alternately combined into, a rigidity is whole so that 111 and second through-hole 121 of first through hole, which is interconnected, to be formed to install shaft Shaft through-hole, and the first permanent magnet trough 112 and the second permanent magnet trough 122 are interconnected into the permanent magnetism for installing permanent magnet Body mounting groove.
In general, permanent magnet trough is arranged to the rectangular configuration radially extended, correspondingly, permanent magnet is also configured to mutually fit therewith The rectangular configuration answered.In a preferred embodiment, the first permanent magnet trough 112 and the second permanent magnet trough 122 are arranged to trapezoidal knot Structure, and the size of the two is consistent, correspondingly, permanent magnet is also configured to the trapezium structure being adapted therewith, further, the The ratio between the inner end circumferential width of one permanent magnet trough 112 and the outer end circumferential width of the first permanent magnet trough 112 are 1:0.85.It is preferred that Ground, the width dimensions of width dimensions and the second permanent magnet trough 122 circumferentially of the first permanent magnet trough 112 circumferentially expand with radius In the gesture being gradually reduced while big.Permanent magnet is enabled to exist in permanent magnet trough with the rotation of rotor using trapezium structure It is gradually held tightly by the circumferential end faces of permanent magnet trough under centrifugal force effect, prevents the inside and outside radial-play of permanent magnet, be further ensured that The rotational stability of rotor core.
With reference to the local magnification region in Fig. 2 and Fig. 3, be respectively formed in the circumferential end faces of the first permanent magnet trough 112 to Few first shoulder 1121, and at least one second shoulder 1221 is formed in the circumferential end faces of the second permanent magnet trough (122). Summarize in preferred embodiment, there are two the first shoulder 1121 and the second shoulder 1221 are all provided with.
Further, the inner bulge of the first shoulder 1121 along the first permanent magnet trough 112 is in a right angle so that the first permanent magnetism The outer end of body slot 112 is formed with the first outer magnet isolation tank 116, and the second shoulder 1221 is in along the inner bulge of the second permanent magnet trough 122 One right angle so that the outer end of the second permanent magnet trough 122 is formed with the second outer magnet isolation tank 126.Outside first outer magnet isolation tank 116 and second Magnet isolation tank 126 becomes outer magnetic flux barrier, can further prevent leakage of the magnetic flux on radial outer end, improves energy conversion effect Rate.
Non-magnetic injection molding body is molded in the utility model one side embodiment, in the outer magnet isolation tank 116 to be used for Reinforce the magnet in permanent magnet trough 112.
With reference to Fig. 2 and Fig. 3, the inner end of the first permanent magnet trough 112 is formed with magnet isolation tank 117 in first, the second permanent magnet trough 122 inner end is formed with magnet isolation tank 127 in second.Further, the width dimensions of magnet isolation tank 117 circumferentially are more than in first The width dimensions of first permanent magnet trough 112 circumferentially, the width dimensions of magnet isolation tank 127 circumferentially are more than the second permanent magnet in second The width dimensions of slot 122 circumferentially.Magnet isolation tank 127 becomes interior magnetic flux barrier in magnet isolation tank 117 and second in first, can be into one Step prevent leakage of the magnetic flux in radial inner end, improve energy conversion efficiency, simultaneously as permanent magnet trough on inner end each other Standoff distance is smaller, and the magnetic flux for being easy to cause two adjacent permanent magnets generation influences each other near inner end, therefore, interior magnet isolation tank Width dimensions circumferentially, which are more than the width dimensions of permanent magnet trough circumferentially, can reduce this influence, prevent magnetic flux from interfering with each other Generation weakens the influence, so as to improve rotor core output power.
In the utility model one side embodiment, it is molded in magnet isolation tank 127 in magnet isolation tank 117 and second in first Non-magnetic injection molding body is used for reinforcing the magnet in permanent magnet trough 112.
Radially the interior of outside protrusion is formed with reference to Fig. 2 and Fig. 3, in first on the radial end face of magnet isolation tank 117 to hold out against End 1171 is formed with the groove 1271 that radially inside is recessed in second on the radial end face of magnet isolation tank 127.Preferably implementing In mode, inside hold out against end 1171 and permanent magnet is fully supported in the inner end of permanent magnet trough 112.1271 energy of groove Enough expand the volume of magnet isolation tank 127 in second, so as to improve every magnetic energy power, magnetic flux is further prevented to reveal.Using this structure Enable permanent magnet both big by the first shoulder 1121, the second shoulder 1221 and the interior radial direction position-limiting action for holding out against end 1171 It is big to improve stability of the permanent magnet in permanent magnet trough when rotor rotates, improve magnetic pole further through Wai Ge Ci bridges 115 are set Overall stability, meanwhile, it is improved by opening up every flux path 125 in permanent magnet radial outer end every magnetic energy power, so as to improve The peak power output of rotor.
It is assumed that the group number of closed type rotor punching group is a, the group number of open rotor punching group is b, and every group of closed type turns Closed type rotor punching number in sub- punching group is x, and the open rotor punching number in every group of open rotor punching group is y, Then there are a >=1, b >=1, x >=1, y >=1.In one embodiment, a=b=x=y=1, closed type rotor punching are mounted on out Put the top of formula rotor punching group, being formd on 1 outer end face of rotor core every flux path 125 in monolithic open rotor punching 8 every flux bore 13.As shown in Figure 1, in a preferred embodiment, a=7, b=14, x=1, y=4, rotor core 1 from Top to bottm is sequentially disposed in following structures:First group of open rotor punching group the-the first group closed type rotor punching group-the second Group open rotor punching group-- the four group of third group open rotor punching group the-the second group closed type rotor punching group is open - the five group of open rotor punching group of rotor punching group-third group closed type rotor punching-the six group of open rotor punching of group Seven groups of group-the-the four group of open rotor punching group-the eight group of open rotor punching group-the nine of closed type rotor punching group Group open rotor punching-the five group of group-the ten group of closed type rotor punching group 11 groups of open rotor punching group-the opening 12 groups of-the six group of closed type rotor punching group-the of formula rotor punching group, 13 groups open turn of open rotor punching group-the Sub- 14 groups of open rotor punching groups of-the seven group of closed type rotor punching group-the of punching group.
It these are only the several embodiments in the utility model, technical staff can be new using this practicality according to the design needs Closed type rotor punching and open rotor punching in type are superimposed in an axial direction with random order.
Number of devices and treatment scale described herein are the explanations for simplifying the utility model.To the utility model Application, modifications and variations will be readily apparent to persons skilled in the art.
Although the embodiment of the utility model is disclosed as above, it is not limited in institute in specification and embodiment Row use, it can be applied to various fields suitable for the present invention completely, for those skilled in the art, can Easily realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, this practicality It is novel to be not limited to specific details and legend shown and described herein.

Claims (12)

1. a kind of rotor core (1), which is characterized in that including:
At least one set of closed type rotor punching group;And
At least one set of open rotor punching group,
Wherein, the closed type rotor punching group and the alternately laminated setting in an axial direction of open rotor punching group.
2. rotor core (1) as described in claim 1, which is characterized in that the rotor core (1) is multiple open rotors A closed type rotor punching group is clamped between punching group.
3. rotor core (1) as claimed in claim 2, which is characterized in that if the closed type rotor punching group includes dry plate The closed type rotor punching (11) stacked gradually in an axial direction, every closed type rotor punching (11) include:
Closed type punching ontology (118);And
The first through hole (111) being opened on closed type punching ontology (118) and multiple first permanent magnet troughs (112),
Wherein, first through hole (111) is at the rotation center of closed type punching ontology (118), multiple first permanent magnet troughs (112) the radial arrangement in the circumferential direction of closed type punching ontology (118), two neighboring first permanent magnet trough (112) limit Go out to be located at the first magnetic pole (114) between the two, be formed between the inner end of the first permanent magnet trough (112) and first through hole (111) There are magnetic bridge in first (113), shape between the outer end of the first permanent magnet trough (112) and the periphery of closed type punching ontology (118) Into there is outer magnetic bridge (115), if dry plate closed type rotor punching (11) is incorporated into a rigidity entirety.
4. rotor core (1) as claimed in claim 3, which is characterized in that if the open rotor punching group includes dry plate The open rotor punching (12) stacked gradually in an axial direction, every open rotor punching (12) include:
Open punching ontology (128);And
The second through-hole (121) being opened on open punching ontology (128) and multiple second permanent magnet troughs (122),
Wherein, the second through-hole (121) is at the rotation center of open punching ontology (128), multiple second permanent magnet troughs (122) the radial arrangement in the circumferential direction of open punching ontology (128), two neighboring second permanent magnet trough (122) limit Go out to be located at the second magnetic pole (124) between the two, be formed between the inner end of the second permanent magnet trough (122) and the second through-hole (121) There is magnetic bridge in second (123), the outer end of the second permanent magnet trough (122) is communicated with towards extraneous every flux path (125), several It is whole that piece open rotor punching (11) is incorporated into a rigidity.
5. rotor core (1) as claimed in claim 4, which is characterized in that if closed type rotor punching group described in several groups with Dry group open rotor punching group is axially alternately being combined into a rigidity entirety so that first through hole (111) and the second through-hole (121) be interconnected the shaft through-hole formed for installing shaft, and the first permanent magnet trough (112) and the second permanent magnet trough (122) it is interconnected into the permanent magnet mounting groove for installing permanent magnet.
6. rotor core (1) as claimed in claim 4, which is characterized in that shape in the circumferential end faces of the first permanent magnet trough (112) Into there is at least one first shoulder (1121);And second permanent magnet trough (122) circumferential end faces on be formed at least one second Shoulder (1221).
7. rotor core (1) as claimed in claim 6, which is characterized in that the first shoulder (1121) is along the first permanent magnet trough (112) inner bulge is in a right angle so that the outer end of the first permanent magnet trough (112) is formed with the first outer magnet isolation tank (116);The The inner bulge of two shoulders (1221) along the second permanent magnet trough (122) is in a right angle so that the outer end of the second permanent magnet trough (122) It is formed with the second outer magnet isolation tank (126).
8. rotor core (1) as claimed in claim 6, which is characterized in that there are two the first shoulder (1121) is set, respectively symmetrically Ground is formed in the circumferential end faces of the first permanent magnet trough (112) both sides;Second shoulder (1221) respectively symmetrically is formed there are two setting In in the circumferential end faces of the second permanent magnet trough (122) both sides.
9. rotor core (1) as claimed in claim 4, which is characterized in that the inner end of the first permanent magnet trough (112) is formed with Magnet isolation tank (117) in one, the inner end of the second permanent magnet trough (122) are formed with magnet isolation tank in second (127).
10. rotor core (1) as claimed in claim 9, which is characterized in that the width of magnet isolation tank (117) circumferentially in first Size is more than the width dimensions of the first permanent magnet trough (112) circumferentially, and the width dimensions of magnet isolation tank (127) circumferentially are big in second In the width dimensions of the second permanent magnet trough (122) circumferentially.
11. rotor core (1) as claimed in claim 10, which is characterized in that in first on the radial end face of magnet isolation tank (117) It is formed with radially the interior of outside protrusion and holds out against end (1171).
12. rotor core (1) as claimed in claim 10, which is characterized in that in second on the radial end face of magnet isolation tank (127) It is formed with the groove (1271) that radially inside is recessed.
CN201721438722.0U 2017-11-01 2017-11-01 Rotor iron core Active CN207542900U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721438722.0U CN207542900U (en) 2017-11-01 2017-11-01 Rotor iron core

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Application Number Priority Date Filing Date Title
CN201721438722.0U CN207542900U (en) 2017-11-01 2017-11-01 Rotor iron core

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Publication Number Publication Date
CN207542900U true CN207542900U (en) 2018-06-26

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107733111A (en) * 2017-11-01 2018-02-23 莱克电气股份有限公司 Rotor iron core
CN109067036A (en) * 2018-08-03 2018-12-21 珠海格力节能环保制冷技术研究中心有限公司 A kind of rotor structure and the motor with the rotor structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107733111A (en) * 2017-11-01 2018-02-23 莱克电气股份有限公司 Rotor iron core
CN109067036A (en) * 2018-08-03 2018-12-21 珠海格力节能环保制冷技术研究中心有限公司 A kind of rotor structure and the motor with the rotor structure

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