CN208835853U - Rotor and magneto - Google Patents

Abstract

The utility model provides a kind of rotor and magneto.The rotor includes rotor core (1), rotor core (1) is circumferentially arranged multiple permanent magnet troughs (2), permanent magnet (3) are provided in permanent magnet trough (2), magnet isolation tank (4) are provided on the inside of permanent magnet trough (2), magnet isolation tank (4) extends towards adjacent magnet isolation tank (4) clockwise, and the magnetic bridge (6) with pole center line at default angle is formed between adjacent magnet isolation tank (4)；Or, magnet isolation tank (4) extends towards adjacent magnet isolation tank (4) counterclockwise, and the magnetic bridge (6) with pole center line at default angle is formed between adjacent magnet isolation tank (4).Rotor according to the present utility model can effectively improve magnetism isolating effect, reduce leakage field on the inside of rotor, promote the saturation degree that magnetizes of rotor, promote motor performance.

Description

Rotor and magneto

Technical field

The utility model belongs to technical field of motors, and in particular to a kind of rotor and magneto.

Background technique

The motor of the tangential magnetization configuration of permanent magnet can be produced due to having " poly- magnetic " effect compared with permanent magnet diametrical magnetization motor Raw higher air gap flux density is applied more and more so that motor has biggish torque/electric current ratio and torque/volume ratio In occasions such as servo-system, electric propulsion, office automation, household electrical appliance.

For the tangential permanent magnet motor of the prior art since rotor permanent magnet is radial arrangement, permanent magnet is a part of buried in rotor External magnetic field is applied on rotor by inside, and when magnetizing to rotor permanent magnet, magnetism guiding access to magnetize on the inside of permanent magnet Magnetic field hardly enters part of the rotor close to shaft, and permanent magnet can not magnetize close to the part of shaft reaches saturation state, is easy Lead to that motor performance declines or even permanent magnet loss of excitation, motor can not operate.

Utility model content

Therefore, the technical problem to be solved by the present invention is to provide a kind of rotor and magneto, Neng Gouyou Effect improves magnetism isolating effect, reduces leakage field on the inside of rotor, promotes the saturation degree that magnetizes of rotor, promotes motor performance.

To solve the above-mentioned problems, the utility model provides a kind of rotor, including rotor core, and rotor core is along week To multiple permanent magnet troughs are provided with, it is provided with permanent magnet in permanent magnet trough, magnet isolation tank, magnet isolation tank are provided on the inside of permanent magnet trough Extend clockwise towards adjacent magnet isolation tank, and is formed with pole center line between adjacent magnet isolation tank at default The magnetic bridge of angle；Or, magnet isolation tank extends towards adjacent magnet isolation tank counterclockwise, and between adjacent magnet isolation tank Form the magnetic bridge with pole center line at default angle.

Preferably, the elongated end of magnet isolation tank crosses pole center line and extends to the radially inner side of adjacent magnet isolation tank.

Preferably, shaft hole is provided on rotor core, the radial width of magnet isolation tank is A, between magnet isolation tank and shaft hole Spacing be B, the ratio of A/B meets following relationship:

2.5≥A/B≥0.7。

Preferably, the even width of magnetic bridge, the width of magnetic bridge are C, and the width of air gap of motor is δ, 1.5 >=C/ δ >= 0.8。

Preferably, the extension end of magnet isolation tank is stretched out clockwise or counterclockwise, and the extension end of magnet isolation tank includes crotch, The central axis of crotch towards rotor core is bent, and forms magnet isolation tank between the side of crotch and the side of adjacent magnet isolation tank.

Preferably, the even width of crotch, the width of crotch are D, and the even width of magnetic bridge, the width of magnetic bridge is C, The ratio of D/C meets following relationship:

2≥D/C≥1。

Preferably, rotor core includes the first punching and the second punching, and the extension end of the magnet isolation tank of the first punching is along up time Needle direction is stretched out, and the extension end of the magnet isolation tank of the second punching is stretched out in the counterclockwise direction, the permanent magnetism of the first punching and the second punching Body slot is correspondingly arranged, and the first punching lamination of preset thickness and the second punching lamination of preset thickness are handed over along the axial direction of rotor core For setting.

Preferably, it is provided with shaft hole on rotor core, along the direction of radial ecto-entad, the width of magnet isolation tank is passed Subtract, and in the radial centre lines of permanent magnet trough, the width of magnet isolation tank is F, and magnet isolation tank is E, the ratio of F/E at a distance from shaft hole Value meets following relationship:

2≥F/E≥0.9。

Preferably, the right side edge of magnet isolation tank is straight, and crosses over pole center line, the right side edge of magnet isolation tank and adjacent Magnetic bridge is formed between the left side edge of magnet isolation tank, along the direction of radial ecto-entad, the width of magnetic bridge successively decreases；Or,

The left side edge of magnet isolation tank is straight, and crosses over pole center line, the left side edge of magnet isolation tank and adjacent magnet isolation tank Right side edge between form magnetic bridge, along the direction of radial ecto-entad, the width of magnetic bridge successively decreases.

Preferably, the width at the narrow most position of magnetic bridge 3 is G, and the width of air gap of motor is δ, and the ratio of G/ δ meets Following relationship:

1.1≥G/δ≥0.6。

Preferably, the left side edge of magnet isolation tank is straight, and the diameter of the adjacent magnet isolation tank in right side is extended to across pole center line Inwardly, the side of magnet isolation tank towards the adjacent magnet isolation tank in right side is provided with the first chimb, the first chimb and adjacent magnet isolation tank The uniform magnetic bridge of formation width between left side edge；

Or,

The right side edge of magnet isolation tank is straight, and the radially inner side of the adjacent magnet isolation tank in left side is extended to across pole center line, The side of magnet isolation tank towards the adjacent magnet isolation tank in left side is provided with the first chimb, the right side edge of the first chimb and adjacent magnet isolation tank Between the uniform magnetic bridge of formation width.

Preferably, the left side edge of magnet isolation tank is connected with the second chimb extended towards right side, and the right side edge of magnet isolation tank connects It is connected to the first chimb extended towards right side, the first chimb and the intersection of the second chimb, the left side of the first chimb and adjacent magnet isolation tank Magnetic bridge is formed between edge；

Or,

The left side edge of magnet isolation tank is connected with the second chimb extended towards left side, and the right side edge of magnet isolation tank is connected with towards a left side The first chimb that side extends, the first chimb and the intersection of the second chimb, shape between the second chimb and the right side edge of adjacent magnet isolation tank At magnetic bridge.

Preferably, the left side edge recess of magnet isolation tank, the right side edge protrusion of magnet isolation tank, protrusion pass through pole center line, The protrusion of magnet isolation tank corresponds to the recess interval setting of adjacent magnet isolation tank, forms magnetic bridge；

Or,

The left side edge protrusion of magnet isolation tank, the right side edge recess of magnet isolation tank, protrusion pass through pole center line, magnet isolation tank The recess interval setting of the corresponding adjacent magnet isolation tank of protrusion, forms magnetic bridge.

Preferably, the peripheral side of rotor core is arranged with non-magnetic fastening sheath.

Preferably, non-magnetic reinforcing rod is provided in magnet isolation tank.

Preferably, the outer surface of reinforcing rod is in contact or the shape of reinforcing rod and magnet isolation tank with the inner surface of magnet isolation tank Shape matches.

Preferably, un-conducted magnetic material is filled in magnet isolation tank.

Preferably, it is equipped with permanent magnet in each permanent magnet trough, permanent magnet tangentially magnetizes, two adjacent permanent magnet polarities Repel each other setting.

Another aspect according to the present utility model provides a kind of magneto, including rotor, which is Above-mentioned rotor.

Rotor provided by the utility model, including rotor core, rotor core is circumferentially arranged multiple permanent magnets Slot is provided with permanent magnet in permanent magnet trough, is provided with magnet isolation tank on the inside of permanent magnet trough, magnet isolation tank direction clockwise Adjacent magnet isolation tank extends, and the magnetic bridge with pole center line at default angle is formed between adjacent magnet isolation tank；Or, every Magnetic slot extends towards adjacent magnet isolation tank counterclockwise, and formed between adjacent magnet isolation tank with pole center line at The magnetic bridge of default angle.Extend on the inside of the permanent magnet trough that one side of magnet isolation tank is closed on to it, pole center is crossed in extension Line stretches to the lower section on the inside of near permanent magnet slot, and one section of magnetic bridge is formed between magnet isolation tank adjacent thereto, and tangential motor exists When magnetizing, the rotor core of permanent magnet trough two sides of the bottom constitutes magnetism guiding access, and the magnetic line of force is closed from this magnetism guiding access, so that magnetic force Line permanent magnet inside bottom more difficult to get access position is arranged such magnet isolation tank in permanent magnet inside bottom, can increase permanent magnet trough The magnetic resistance of bottom passageway reduces the magnetic line of force that magnetic field of magnetizing is closed here, the magnetic line of force is promoted to enter permanent magnet inside bottom, To improve the saturation degree that magnetizes of rotor permanent magnet, while the permanent magnet brow leakage close to rotor bottom can be reduced, in turn The magnetic linkage for improving motor, promotes the efficiency of motor.

Detailed description of the invention

Fig. 1 is the dimensional structure schematic diagram of the rotor of the utility model embodiment；

Fig. 2 is the structural schematic diagram of the rotor of another embodiment of the utility model；

Fig. 3 is the dimensional structure schematic diagram of the rotor of another embodiment of the utility model；

Fig. 4 is the dimensional structure schematic diagram of the rotor of another embodiment of the utility model；

Fig. 5 is the structural schematic diagram of the rotor of another embodiment of the utility model；

Fig. 6 is the structural schematic diagram of the rotor of another embodiment of the utility model；

Fig. 7 is the magnetic structure schematic diagram of the rotor of another embodiment of the utility model；

Fig. 8 is the structural schematic diagram of the rotor of another embodiment of the utility model；

Fig. 9 is the structural schematic diagram of the rotor of another embodiment of the utility model；

Figure 10 is the structural schematic diagram of the rotor of another embodiment of the utility model；

Figure 11 is the structural schematic diagram of the rotor of another embodiment of the utility model.

Appended drawing reference indicates are as follows:

1, rotor core；2, permanent magnet trough；3, permanent magnet；4, magnet isolation tank；5, crotch；6, magnetic bridge；7, shaft hole；8, tight Solid protection set；9, reinforcing rod；10, it is open；11, the first chimb；12, the second chimb.

Specific embodiment

In conjunction with referring to shown in Fig. 1 to 11, embodiment according to the present utility model, rotor includes rotor core 1, rotor Iron core 1 is circumferentially arranged multiple permanent magnet troughs 2, permanent magnet 3 is provided in permanent magnet trough 2, the inside of permanent magnet trough 2 is provided with Magnet isolation tank 4, magnet isolation tank 4 extends towards adjacent magnet isolation tank 4 clockwise, and is formed between adjacent magnet isolation tank 4 With pole center line at the magnetic bridge 6 of default angle；Or, magnet isolation tank 4 prolongs towards adjacent magnet isolation tank 4 counterclockwise It stretches, and forms the magnetic bridge 6 with pole center line at default angle between adjacent magnet isolation tank 4.Preferably, each permanent magnet Permanent magnet 3 is equipped in slot 2, permanent magnet 3 tangentially magnetizes, adjacent two 3 polar repulsions of permanent magnet setting.

Preferably, the elongated end of magnet isolation tank 4 crosses pole center line and extends to the radially inner side of adjacent magnet isolation tank 4.

Magnet isolation tank 4 is connected with permanent magnet trough 2, i.e. 3 inside of permanent magnet is not contacted with rotor core 1.Permanent magnet 3 is, for example, Magnet steel.

In the present embodiment, permanent magnet 3 is even along circumferential direction is distributed on rotor core 1, and the quantity of permanent magnet 3 is N A, wherein N is the even number more than or equal to 4, and each permanent magnet 3 is being positioned radially along rotor core, and permanent magnet 3 is that edge is cut To magnetization, the adjacent polarity having the same of two permanent magnets 3 is oppositely arranged.There are shaft hole, permanent magnet trough on the inside of rotor core 1 2 are known as the inside of permanent magnet trough 2 close to the radially inner side of shaft hole 7, and the radial outside close to rotor outer circle is known as permanent magnet trough 2 Outside, rotor core 1 is an integral structure, and has a dowel between shaft hole on the inside of permanent magnet trough.

The left and right of magnet isolation tank 4 in the application refers to, when the radial outside edge of permanent magnet trough 2 is located at top, radially inner side When side is located at bottom, defined by be located at the permanent magnet trough 2 radially inner side magnet isolation tank 4 left and right orientation.

Offer opening 10 far from the radial outside of shaft hole in permanent magnet trough 2, the opening 10 from permanent magnet trough 2 radially Run through rotor core 1 outward, the leakage field of 3 radial outside of permanent magnet can be further decreased, improve air gap flux density, improves motor effect Rate.

Extend on the inside of the permanent magnet trough 2 that one side of magnet isolation tank 4 is closed on to it, pole center line is crossed in extension, stretches to The lower section of 2 inside of near permanent magnet slot, and one section of magnetic bridge 6 is formed between magnet isolation tank 4 adjacent thereto, tangential motor is magnetizing When, the rotor core of 2 two sides of the bottom of permanent magnet trough constitutes magnetism guiding access, and the magnetic line of force is closed from this magnetism guiding access, so that the magnetic line of force Permanent magnet inside bottom more difficult to get access position forms leakage magnetic flux Φ σ, and such magnetic shielding structure is arranged in permanent magnet inside bottom, can To increase the magnetic resistance of 2 bottom passageway of permanent magnet trough, the magnetic line of force that magnetic field of magnetizing is closed here is reduced, the magnetic line of force is promoted to enter magnetic Steel bottom can also be reduced on the inside of rotor to improve the saturation degree that magnetizes of rotor permanent magnet 3 even if using stiff shaft Permanent magnet brow leakage, and then the magnetic linkage of motor is improved, the performance of motor is promoted, while being on the outside of the permanent magnet trough of rotor Open slot further decreases the leakage field on the outside of permanent magnet, improves air gap flux density, improves electric efficiency.

Magnetic bridge 6 is located at the radially inner side of permanent magnet trough 2, by rotor core radially inner side towards rotor core radial outside It is obliquely extended, so that part of the rotor core 1 in addition to magnet steel is structure as a whole, reduces motor part, directly driven convenient for shaft Rotor core 1 rotates.

Preferably, shaft hole 7 is provided on rotor core 1, the radial width of magnet isolation tank 4 is A, magnet isolation tank 4 and shaft hole 7 Between spacing be B, the ratio of A/B meets following relationship: 2.5 >=A/B >=0.7.As 2.5 >=A/B >=0.7, in magnet isolation tank 4 For no permeable material, the width of magnet isolation tank 4 can be increased, the magnetic resistance of 3 inside of permanent magnet is improved, so that the magnetic line of force that magnetizes is more Into 3 inner side of permanent magnet, the saturation degree that magnetizes of permanent magnet 3 is improved, improves empty load of motor magnetic linkage, electric efficiency is promoted, keeps away Exempt from permanent magnet do not magnetize be saturated caused by easy demagnetization problem, improve the anti-demagnetization capability of motor.

Preferably, the even width of magnetic bridge 6, the width of magnetic bridge 6 are C, and the width of air gap of motor is δ, 1.5 >=C/ δ ≥0.8.As C/ δ < 0.8, magnetic bridge 6 is narrow, and magnetic bridge 6 serves as the dowel that shaft drives rotor rotation, and dowel is got over Narrow, the mechanical strength of rotor structure is weaker；The material of magnetic bridge 6 is silicon steel sheet, is magnetic conduction substance, so magnetic bridge again cannot be too Otherwise width cannot play magnetism isolating effect, as 1.5 >=C/ δ >=0.8, the saturation degree highest that magnetizes of permanent magnet 3 at this time, motor Magnetic linkage highest, electric efficiency highest, while guaranteeing motor reliability service.

In conjunction with referring to figure 1 and figure 2, the extension end of magnet isolation tank 4 is stretched out clockwise or counterclockwise, magnet isolation tank 4 Extension end include crotch 5, the central axis of crotch 5 towards rotor core 1 is bent, the side of crotch 5 and adjacent magnet isolation tank Magnetic bridge 6 is formed between 4 side.Crotch 5 can further increase the magnetic resistance of magnetic circuit on the inside of permanent magnet, mention towards shaft hole 7 Height magnetic field of magnetizing enters the magnetic line of force on the inside of permanent magnet, reduces leakage field, improves permanent magnet and magnetizes saturation degree.

Preferably, the even width of crotch 5, the width of crotch 5 are D, the even width of magnetic bridge 6, the width of magnetic bridge 6 For C, the ratio of D/C meets following relationship: 2 >=D/C >=1, it is possible to increase the width at crotch slot improves magnetic resistance, improves inside magnetic The magnetism isolating effect on road improves the saturation degree that magnetizes of permanent magnet so that the magnetic flux that magnetic field of magnetizing passes through from rotor dowel is reduced.

Preferably, rotor core 1 includes the first punching and the second punching, and the extension end of the magnet isolation tank 4 of the first punching is along suitable Clockwise stretches out, and the extension end of the magnet isolation tank 4 of the second punching is stretched out in the counterclockwise direction, and the first punching and the second punching are forever Magnet slot 2 is correspondingly arranged, the axis of the second punching lamination of the first punching lamination of preset thickness and preset thickness along rotor core 1 To being arranged alternately.Since the position of the first punching and the superimposed permanent magnet trough 2 of the second punching is constant, therefore permanent magnet 3 does not have to divide Section can further increase the magnetic resistance of magnetic circuit on the inside of permanent magnet instead, so that magnetizing for each permanent magnet on each rotor is full And Du Genggao, the unloaded magnetic linkage of motor are higher.

In conjunction with shown in Figure 3, shaft hole 7 is provided on rotor core 1, along the direction of radial ecto-entad, every magnetic The width of slot 4 successively decreases, and in the radial centre lines of permanent magnet trough 2, and the width of magnet isolation tank 4 is F, magnet isolation tank 4 and shaft hole 7 Distance is E, and the ratio of F/E meets following relationship: 2 >=F/E >=0.9.It not only can be improved in rotor using such magnet isolation tank 4 The resistance magnetic effect of side, promotes the effect that magnetizes of permanent magnet 3, while simplifying magnetic shielding structure, simplifies processing technology, reduces Processing cost reduces motor assembly sheet, improves motor cost performance.The magnet isolation tank 4 of the present embodiment is, for example, triangle.

In conjunction with shown in Figure 4, it is preferable that the right side edge of magnet isolation tank 4 is straight, and crosses over pole center line, magnet isolation tank 4 Right side edge and adjacent magnet isolation tank 4 left side edge between form magnetic bridge 6, along the direction of radial ecto-entad, every The width of magnetic bridge 6 successively decreases；Or,

The left side edge of magnet isolation tank 4 is straight, and crosses over pole center line, the left side edge of magnet isolation tank 4 and adjacent every magnetic Magnetic bridge 6 is formed between the right side edge of slot 4, along the direction of radial ecto-entad, the width of magnetic bridge 6 successively decreases.

The magnet isolation tank 4 of the present embodiment is, for example, quadrangle.Using the magnet isolation tank 4 of this kind of structure, it is formed by 6 edge of magnetic bridge The direction width of radial ecto-entad successively decrease, increase the area of magnet isolation tank 4, increase the magnetic resistance of magnet isolation tank 4, improve in permanent magnet Total magnetic resistance of side magnetic circuit promotes the effect that magnetizes of permanent magnet.

Preferably, the width at the narrow most position of magnetic bridge 63 is G, and the width of air gap of motor is δ, and the ratio of G/ δ meets Following relationship: δ >=0.6 1.1 >=G/.The most narrow place of magnetic bridge 6 cannot it is narrow can not be wide, it is narrow influence motor structure it is strong Degree, it is wide and magnetism isolating effect cannot be played well.By the way that the ratio of G/ δ is limited to δ >=0.6 1.1 >=G/, both ensure that The structural strength of rotor, and the saturation degree that magnetizes of permanent magnet is improved, the unloaded magnetic linkage of motor is improved, motor power output is improved, mentions The output power of high motor, improves motor performance.

In conjunction with shown in Figure 5, it is preferable that the left side edge of magnet isolation tank 4 is straight, and extends to the right side across pole center line The radially inner side of the adjacent magnet isolation tank 4 in side, the side of magnet isolation tank 4 towards the adjacent magnet isolation tank 4 in right side are provided with the first chimb 11, and first The uniform magnetic bridge 6 of formation width between chimb 11 and the left side edge of adjacent magnet isolation tank 4；

Or,

The right side edge of magnet isolation tank 4 is straight, and the diameter for extending to the adjacent magnet isolation tank 4 in left side across pole center line is inside Side, the side of magnet isolation tank 4 towards the adjacent magnet isolation tank 4 in left side are provided with the first chimb 11, the first chimb 11 and adjacent magnet isolation tank 4 Right side edge between the uniform magnetic bridge 6 of formation width.

The magnet isolation tank 4 of the present embodiment is, for example, quadrangle, and the left side edge length of the quadrangle is longer, to the right from left side Extend across pole center line.Magnetic bridge 6 is formed by using above-mentioned structure, is capable of increasing the area of magnet isolation tank 4, is increased The magnetic resistance of magnet isolation tank 4 improves total magnetic resistance of 3 inside magnetic circuit of permanent magnet, promotes the magnetic force that magnetic field of magnetizing enters 3 bottom of permanent magnet Line promotes the saturation degree that magnetizes of permanent magnet 3, improves the unloaded magnetic linkage of motor, reduce the running current of motor, reduce frequency converter Loss, improves the overall efficiency of motor.

In conjunction with shown in Figure 6, it is preferable that the left side edge of magnet isolation tank 4 is connected with the second chimb 12 extended towards right side, The right side edge of magnet isolation tank 4 is connected with the first chimb 11 extended towards right side, the first chimb 11 and the intersection of the second chimb 12, the Magnetic bridge 6 is formed between one chimb 11 and the left side edge of adjacent magnet isolation tank 4；

Or,

The left side edge of magnet isolation tank 4 is connected with the second chimb 12 extended towards left side, and the right side edge of magnet isolation tank 4 is connected with The first chimb 11 extended towards left side, the first chimb 11 and the intersection of the second chimb 12, the right side of the second chimb 12 and adjacent magnet isolation tank 4 Magnetic bridge 6 is formed between side edge.

Magnet isolation tank 4 in the present embodiment is, for example, pentagon.Using the scheme of the present embodiment, can further increase every magnetic The area of slot 4 increases the magnetic resistance of magnet isolation tank 4, promotes the saturation degree that magnetizes of permanent magnet.

In conjunction with shown in Figure 8, it is preferable that the left side edge of magnet isolation tank 4 is recessed, the right side edge protrusion of magnet isolation tank 4, convex It rises across pole center line, the protrusion of magnet isolation tank 4 corresponds to the recess interval setting of adjacent magnet isolation tank 4, forms magnetic bridge 6；

Or,

The left side edge protrusion of magnet isolation tank 4, the right side edge recess of magnet isolation tank 4, protrusion pass through pole center line, magnet isolation tank 4 protrusion corresponds to the recess interval setting of adjacent magnet isolation tank 4, forms magnetic bridge 6.Protrusion and recess cooperate, and can be formed The magnetic bridge 6 of bending promotes magnetism isolating effect, the two synthesis is so that on the inside of permanent magnet so as to increase the length of magnetic bridge 6 The rate that magnetizes is higher, so that magnetizing more evenly on the inside of permanent magnet, permanent magnet magnetizes, and saturation degree is higher, and empty load of motor magnetic linkage is higher, electricity Engine efficiency is higher, and the overall efficiency of motor is higher.

In conjunction with shown in Figure 9, the peripheral side of rotor core 1 is arranged with non-magnetic fastening sheath 8.Fastening sheath 8 is Tube-in-tube structure, itself is non-magnetic, can further reinforce motor rotor construction, improves the structural strength of rotor, improves electricity The running frequency range of machine rotor improves operational reliability, widens the application of tangential motor.

In conjunction with referring to non-magnetic reinforcing rod 9 shown in Figure 10 and Figure 11, is provided in magnet isolation tank 4, reinforcing rod 9 is non-magnetic, Its surface of the part that reinforcing rod 9 is placed on the inside of rotor is in contact with magnet isolation tank 4 or matches with the two shape, and reinforcing rod 9 is set Part on the outside of rotor can be made into circle or other shapes, and the part that reinforcing rod 9 is placed on the outside of rotor is connected with rotor stop plate Connect, one side reinforcing rod 9 guarantee permanent magnet 3 magnetize saturation degree in the case where can to increase 3 surface of permanent magnet fixed Contact area reduces running local pressure, can preferably fixed permanent magnet 3, prevent 3 fragmentation of permanent magnet in operational process Risk, another aspect reinforcing rod 9 connects with the baffle of rotor core 1, and the knot of rotor is further increased with baffle fit Structure intensity.

Un-conducted magnetic material is filled in magnet isolation tank 4.Un-conducted magnetic material can be filled in magnet isolation tank 4 completely as reinforcer, Un-conducted magnetic material can also be filled after being packed into reinforcing rod 9, thus by the un-conducted magnetic material of filling to reinforcing rod 9 every magnetic Installation in slot 4, which is formed, to be fixed.

Permanent magnet trough 2 can be rectangle, or trapezoidal.

Embodiment according to the present utility model, magneto include rotor, which turns for above-mentioned motor Son.

Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting Ground combination, superposition.

The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle Within the scope of shield.Above are merely preferred embodiments of the utility model, it is noted that for the ordinary skill of the art For personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these improvement It also should be regarded as the protection scope of the utility model with modification.

Claims (19)

1. a kind of rotor, which is characterized in that including rotor core (1), the rotor core (1) is circumferentially arranged have it is multiple Permanent magnet trough (2), the permanent magnet trough (2) is interior to be provided with permanent magnet (3), is provided on the inside of the permanent magnet trough (2) every magnetic Slot (4), the magnet isolation tank (4) extend towards the adjacent magnet isolation tank (4) clockwise, and with adjacent magnet isolation tank (4) magnetic bridge (6) with pole center line at default angle is formed between；Or, the magnet isolation tank (4) court counterclockwise Extend to the adjacent magnet isolation tank (4), and is formed with pole center line between adjacent magnet isolation tank (4) into default angle Magnetic bridge (6).

2. rotor according to claim 1, which is characterized in that the elongated end of the magnet isolation tank (4) is crossed in magnetic pole Heart line and the radially inner side for extending to the adjacent magnet isolation tank (4).

3. rotor according to claim 2, which is characterized in that be provided with shaft hole on the rotor core (1) (7), the radial width of the magnet isolation tank (4) is A, and the spacing between the magnet isolation tank (4) and the shaft hole (7) is B, A/B Ratio meet following relationship:

2.5≥A/B≥0.7。

4. rotor according to claim 1, which is characterized in that the even width of the magnetic bridge (6), it is described every magnetic The width of bridge (6) is C, and the width of air gap of motor is δ, δ >=0.8 1.5 >=C/.

5. rotor according to claim 1, which is characterized in that the extension end of the magnet isolation tank (4) along clockwise or It counterclockwise stretches out, the extension end of the magnet isolation tank (4) includes crotch (5), and the crotch (5) is towards the rotor core (1) central axis bending, between the side of the crotch (5) and the side of the adjacent magnet isolation tank (4) formed described in every Magnetic slot (4).

6. rotor according to claim 5, which is characterized in that the even width of the crotch (5), the crotch (5) width is D, and the even width of the magnetic bridge (6), the width of the magnetic bridge (6) is C, and the ratio of D/C meets following Relationship:

2≥D/C≥1。

7. rotor according to claim 1, which is characterized in that the rotor core (1) includes the first punching and the The extension end of two punchings, the magnet isolation tank (4) of first punching is stretched out along clockwise direction, the magnet isolation tank of second punching (4) extension end is stretched out in the counterclockwise direction, and the permanent magnet trough (2) of first punching and second punching is correspondingly arranged, First punching lamination of preset thickness and the second punching lamination of preset thickness are alternately set along the axial of the rotor core (1) It sets.

8. rotor according to claim 1, which is characterized in that be provided with shaft hole on the rotor core (1) (7), along the direction of radial ecto-entad, the width of the magnet isolation tank (4) successively decreases, and the radial direction in the permanent magnet trough (2) On center line, the width of the magnet isolation tank (4) is F, and the magnet isolation tank (4) is E, the ratio of F/E at a distance from the shaft hole (7) Value meets following relationship:

2≥F/E≥0.9。

9. rotor according to claim 1, which is characterized in that the right side edge of the magnet isolation tank (4) is straight, and across More pole center line forms institute between the right side edge of the magnet isolation tank (4) and the left side edge of the adjacent magnet isolation tank (4) Magnetic bridge (6) are stated, along the direction of radial ecto-entad, the width of the magnetic bridge (6) successively decreases；Or,

The left side edge of the magnet isolation tank (4) is straight, and crosses over pole center line, the left side edge and phase of the magnet isolation tank (4) It is formed the magnetic bridge (6) between the right side edge of the adjacent magnet isolation tank (4), it is described along the direction of radial ecto-entad The width of magnetic bridge (6) successively decreases.

10. rotor according to claim 9, which is characterized in that the width at the narrow most position of the magnetic bridge (6) 3 Degree is G, and the width of air gap of motor is δ, and the ratio of G/ δ meets following relationship:

1.1≥G/δ≥0.6。

11. rotor according to claim 1, which is characterized in that the left side edge of the magnet isolation tank (4) is straight, and The radially inner side of the adjacent magnet isolation tank (4) in right side is extended to across pole center line, the magnet isolation tank (4) is adjacent every magnetic towards right side The side of slot (4) is provided with the first chimb (11), between first chimb (11) and the left side edge of adjacent magnet isolation tank (4) The uniform magnetic bridge of formation width (6)；

Or,

The right side edge of the magnet isolation tank (4) is straight, and the radial direction of the adjacent magnet isolation tank (4) in left side is extended to across pole center line The side of inside, magnet isolation tank (4) towards the adjacent magnet isolation tank in left side (4) is provided with the first chimb (11), first chimb (11) the uniform magnetic bridge of formation width (6) between the right side edge of adjacent magnet isolation tank (4).

12. rotor according to claim 1, which is characterized in that the left side edge of the magnet isolation tank (4) is connected with court The second chimb (12) that right side extends, the right side edge of the magnet isolation tank (4) are connected with the first chimb (11) extended towards right side, First chimb (11) and second chimb (12) intersection, the left side of first chimb (11) and adjacent magnet isolation tank (4) The magnetic bridge (6) are formed between edge；

Or,

The left side edge of the magnet isolation tank (4) is connected with the second chimb (12) extended towards left side, the right side of the magnet isolation tank (4) Edge is connected with the first chimb (11) extended towards left side, first chimb (11) and second chimb (12) intersection, institute It states and forms the magnetic bridge (6) between the second chimb (12) and the right side edge of adjacent magnet isolation tank (4).

13. rotor according to claim 1, which is characterized in that the left side edge of the magnet isolation tank (4) is recessed, institute The right side edge protrusion of magnet isolation tank (4) is stated, the protrusion passes through pole center line, and the protrusion of the magnet isolation tank (4) corresponds to adjacent The recess interval of the magnet isolation tank (4) is arranged, and forms the magnetic bridge (6)；

Or,

The left side edge protrusion of the magnet isolation tank (4), the right side edge recess of the magnet isolation tank (4), the protrusion pass through magnetic pole Center line, the protrusion of the magnet isolation tank (4) correspond to the recess interval setting of the adjacent magnet isolation tank (4), form the magnetic bridge (6)。

14. rotor according to claim 1, which is characterized in that the peripheral side of the rotor core (1) is arranged with not The fastening sheath (8) of magnetic conduction.

15. rotor according to claim 1, which is characterized in that be provided with non-magnetic add in the magnet isolation tank (4) Strong bar (9).

16. rotor according to claim 15, which is characterized in that the outer surface of the reinforcing rod (9) and it is described every The inner surface of magnetic slot (4) is in contact or the shape of the reinforcing rod (9) and the shape of the magnet isolation tank (4) match.

17. according to claim 1 to rotor described in any one of 16, which is characterized in that filling in the magnet isolation tank (4) There is un-conducted magnetic material.

18. rotor according to claim 1, which is characterized in that be equipped with permanent magnet in each permanent magnet trough (2) (3), permanent magnet (3) tangentially magnetizes, adjacent two permanent magnet (3) polar repulsions setting.

19. a kind of magneto, including rotor, which is characterized in that the rotor is any in claim 1 to 18 Rotor described in.