CN104247215A - Permanent magnet embedded rotor of motor - Google Patents
Permanent magnet embedded rotor of motor Download PDFInfo
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- CN104247215A CN104247215A CN201280072665.2A CN201280072665A CN104247215A CN 104247215 A CN104247215 A CN 104247215A CN 201280072665 A CN201280072665 A CN 201280072665A CN 104247215 A CN104247215 A CN 104247215A
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- permanent magnet
- hole
- bonding agent
- rotor
- surface side
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
Abstract
The purpose of the present invention is to provide a rotor of a motor having a structure that allows permanent magnets to be stably fixed by eliminating a problem of conventional rotors of motors, namely, the problem of an increase in imbalance of a permanent magnet embedded rotor of a motor due to instabilities of adhering capacity and adhesion area caused by stripping of an adhesive, which has been applied to the permanent magnets, at the edges of permanent magnet embedding holes. Each permanent magnet (4) is provided with an adhesive injection hole (7), which penetrates through the center section of a rotor core (1) in the axial direction of a rotary shaft (2), and adhesive ejection holes (8a, 8b), which are vertically connected to the adhesive injection hole (7) and formed on a surface having a long side in the axial direction of the rotary shaft (2) and a short side in the circumferential direction of the rotor core (1). An adhesive (10) for fixing the rotor core (1) to the permanent magnet (4) is ejected through the adhesive ejection holes (8a, 8b).
Description
Technical field
The present invention relates to a kind of rotor used in motor with permanent magnet, particularly relate to a kind of permanent magnet submerged type rotor in rotor core inside with the motor of multiple permanent magnet.
Background technology
The permanent magnet submerged type rotor used in existing motor with permanent magnet adopts following structure, in the structure shown here, at the central portion embedded rotating axle of rotor core, and near the periphery along rotor core circumference, being formed with multiple permanent magnet submerged hole, the permanent magnet submerged to permanent magnet submerged hole of the size in this permanent magnet submerged hole can being housed in by being formed as.In addition, by permanent magnet submerged in permanent magnet submerged hole time, relative with permanent magnet submerged hole, along adhesive-applying on two faces rotating axial permanent magnet, utilize this bonding agent permanent magnet to be fixed on (for example, referring to patent documentation 1) in permanent magnet submerged hole.
Patent documentation 1: Japanese Unexamined Patent Publication 2000-197292 publication (the 5th page, Fig. 3)
Summary of the invention
Existing permanent magnet submerged type rotor is owing to being formed according to upper type, therefore there is following problem, namely, such as, by permanent magnet submerged in permanent magnet submerged hole time, in the edge in permanent magnet submerged hole, the bonding agent being coated on permanent magnet is peeled off, bonding capacity and bond area cannot keep constant, and the amount of unbalance of rotor increases.In addition, owing to can not stably guarantee bonding capacity and bond area, adhesive strength cannot be guaranteed, therefore, there is following problems, namely, moment of torsion when startup due to rotor stops and centrifugal force, two faces place that permanent magnet is being coated with bonding agent peels off, the rotor core thinner wall section of the circumferential two sides of inside, permanent magnet impact several times permanent magnet submerged hole, thus causes rotor core or even rotor to be damaged.
In addition, if bonding capacity and the bond area of the rotor core inner radial surface side of permanent magnet are less, then the adhesive strength of inner surface side is more weak, due to moment of torsion when effect has rotor startup to stop and centrifugal force, and cause the adhesive portion of the rotor core inner radial surface side of permanent magnet to be peeled off, rotor core is only fixed in rotor core radially-outer surface side, its result, there is following problem, namely, with rotor core radial direction these two faces of surfaces externally and internally at permanent magnet, or only carry out bonding situation at inner surface side one side to compare, the stress that the outer surface leading section of the rotor core thinner wall section of inside, permanent magnet submerged hole bears becomes large, rotor core generation fatigue rupture etc.
The present invention proposes to solve problem as above, its object is to obtain a kind of permanent magnet submerged type rotor with the motor with permanent magnet of following structure, and this structure can suppress the amount of unbalance of rotor and stably fixed permanent magnet.
In the permanent magnet submerged type rotor of the motor that the present invention relates to, rotating shaft is embedded with at the center of rotor core, permanent magnet submerged type rotor has permanent magnet submerged hole, permanent magnet submerged hole is corresponding with the number of poles of rotor and be arranged in rotor core circumference at equal intervals, and it is through along rotating shaft direction, permanent magnet submerged hole each in the permanent magnet formed in the mode that can be housed in permanent magnet submerged hole is installed, wherein, be provided with in permanent magnet: bonding agent hand-hole, it is through along rotating shaft direction; And bonding agent squit hole, rotor core circumference to be combined with bonding agent hand-hole, from the ejection of bonding agent squit hole for the bonding agent that rotor core and permanent magnet is fixed as long limit by it by rotating shaft direction on the surface of minor face.
The effect of invention
According to the present invention, by arranging bonding agent hand-hole and bonding agent squit hole in permanent magnet, thus after desired locations permanent magnet being configured in permanent magnet submerged hole, can in the position of regulation, with the bonding capacity of regulation and bond area adhesive-applying, therefore, bonding agent can not be peeled off in the edge in permanent magnet submerged hole, and the adhesive strength expected, the amount of unbalance suppressing rotor can be obtained, and, permanent magnet can not be peeled off from rotor rotor core, and can prevent the damage of rotor.
Accompanying drawing explanation
Fig. 1 is the front view of the structure of the permanent magnet submerged type rotor representing motor, and this rotor represents embodiments of the invention 1.
Fig. 2 is the axial sectional elevation of the structure of the permanent magnet submerged type rotor representing motor, and this rotor represents embodiments of the invention 1.
Fig. 3 is the three-view diagram of the permanent magnet of the permanent magnet submerged type rotor of motor, and this rotor represents embodiments of the invention 1.
Fig. 4 is the electromagnetism analysis result of the magnetic flux line of the permanent magnet submerged type rotor of motor, and this rotor represents embodiments of the invention 1.
Fig. 5 is the axial sectional elevation of the structure of the permanent magnet submerged type rotor representing motor, and this rotor represents embodiments of the invention 2.
Fig. 6 is the three-view diagram of the permanent magnet of the permanent magnet submerged type rotor of motor, and this rotor represents embodiments of the invention 2.
Fig. 7 is the front view of the structure of the permanent magnet submerged type rotor representing motor, and this rotor represents embodiments of the invention 3.
Fig. 8 is the axial sectional elevation of the structure of the permanent magnet submerged type rotor representing motor, and this rotor represents embodiments of the invention 3.
Fig. 9 is the three-view diagram of the permanent magnet of the permanent magnet submerged type rotor of motor, and this rotor represents embodiments of the invention 3.
Figure 10 is the axial sectional elevation of the structure of the permanent magnet submerged type rotor representing motor, and this rotor represents embodiments of the invention 4.
Figure 11 is the end of the rotor core of the permanent magnet submerged type rotor being positioned at motor and does not have the front view of the steel plate in permanent magnet submerged hole, and this rotor represents embodiments of the invention 4.
Figure 12 is the front view of the structure of the permanent magnet submerged type rotor representing motor, and this rotor represents embodiments of the invention 5.
Figure 13 is the three-view diagram of the permanent magnet of the permanent magnet submerged type rotor of motor, and this rotor represents embodiments of the invention 5.
Figure 14 is the front view of the structure of the permanent magnet submerged type rotor representing motor, and this rotor represents embodiments of the invention 6.
Figure 15 is the three-view diagram of the permanent magnet of the permanent magnet submerged type rotor of motor, and this rotor represents embodiments of the invention 6.
Figure 16 is the front view of the structure of the permanent magnet submerged type rotor representing motor, and this rotor represents embodiments of the invention 7.
Figure 17 is the three-view diagram of the permanent magnet of the permanent magnet submerged type rotor of motor, and this rotor represents embodiments of the invention 7.
Embodiment
Embodiment 1
Fig. 1 is the front view of the structure of the permanent magnet submerged type rotor representing motor, Fig. 2 is the axial sectional elevation of the structure of the permanent magnet submerged type rotor representing motor, be the cutaway view along the line X-X ' in Fig. 1, wherein, this rotor represents embodiments of the invention 1.Fig. 3 is the three-view diagram of the permanent magnet of the permanent magnet submerged type rotor of motor, and Fig. 4 is the electromagnetism analysis result of the magnetic flux line of the permanent magnet submerged type rotor of motor, and wherein, this rotor represents embodiments of the invention 1.
In fig. 1 and 2, label 1 is rotor core, it is obtained by multiple silicon steel plates of overlapping same shape, this silicon steel plate is punched the shape into regulation, such as shown in Figure 1, be punched the shape for having 10 permanent magnet submerged holes, label 2 is the rotating shafts being embedded in rotor core 1 central portion, label 3 is permanent magnet submerged holes of square shape, it is corresponding with number of poles and be equally spaced arranged in rotor core 1, such as, as shown in Figure 1, be formed with 10, this permanent magnet submerged hole is using the circumference of rotor core 1 as long limit, and using radial direction as minor face, axis along rotating shaft 2 is through, label 4 is permanent magnets, it is imbedded and is arranged in permanent magnet submerged hole 3, quantity is corresponding with number of poles, such as, there are 10 as shown in Figure 1, permanent magnet 4 is made up of neodymium class rare earth magnet.Label 5a is inner surface side channel, and label 5b is outer surface side channel, inner surface side channel 5a and outer surface side channel 5b being axially disposed within permanent magnet submerged hole 3 along rotating shaft 2.Label 6 be at permanent magnet 4 using the circumference of rotor core 1 as long limit and using radial direction as the central portion in two of the rectangular shape of minor face faces, along the bonding agent inlet that the axis of rotating shaft 2 is arranged, label 7 is as gateway and the bonding agent hand-hole of through permanent magnet 4 using bonding agent inlet 6, label 8a is inner surface side bonding agent squit hole, label 8b is outer surface side bonds agent squit hole, inner surface side bonding agent squit hole 8a and outer surface side bonds agent squit hole 8b permanent magnet 4 using rotating shaft 2 axially as long limit and using the circumference of rotor core 1 as minor face, along on the surface of the surfaces externally and internally of rotor core 1 radial direction, there is opening, and be bonded to each other in the vertical direction with bonding agent hand-hole 7.Label 9 is the iron powders mixed in bonding agent, and label 10 is the bonding agents for being fixed on by permanent magnet 4 in permanent magnet submerged hole 3.
As shown in Figure 3, permanent magnet 4 is rectangle at the cross sectional shape axially of rotating shaft 2, be formed as being housed in the size in permanent magnet submerged hole 3, this permanent magnet 4 has respectively: bonding agent hand-hole 7, its using the bonding agent inlet 6 of permanent magnet 4 as gateway, and through along the axis of rotating shaft 2; And inner surface side bonding agent squit hole 8a and outer surface side bonds agent squit hole 8b, they are combined in vertical direction with bonding agent hand-hole 7, and through along the radial direction of rotor core 1.For each of these bonding agent hand-holes 7, inner surface side bonding agent squit hole 8a and outer surface side bonds agent squit hole 8b, according to the electromagnetism analysis result of Fig. 4 obtain magnetic flux line without position, and magnetic flux line without position and the central portion of circumference of permanent magnet 4 bonding agent hand-hole 7, inner surface side bonding agent squit hole 8a and outer surface side bonds agent squit hole 8b are set, therefore, it is possible to prevent the magnetic characteristic of rotor from reducing.
In rotor core 1, as the bonding agent accumulation portion of the bonding agent 10 sprayed from inner surface side bonding agent squit hole 8a and outer surface side bonds agent squit hole 8b, rotor core 1 radial surfaces externally and internally centre in permanent magnet submerged hole 3, namely along rotating shaft 2 axis and with inner surface side bonding agent squit hole 8a, position that outer surface side bonds agent squit hole 8b is relative, be respectively equipped with the groove of thinner flat pattern, i.e. inner surface side channel 5a and outer surface side channel 5b.Permanent magnet 4 is being embedded in after in permanent magnet submerged hole 3, if inject bonding agent 10 from bonding agent inlet 6, then bonding agent 10 is through bonding agent hand-hole 7, spray from the inner surface side bonding agent squit hole 8a be combined in vertical direction with bonding agent hand-hole 7 and outer surface side bonds agent squit hole 8b, the bonding agent 10 sprayed is deposited in inner surface side channel 5a and outer surface side channel 5b.
As mentioned above, by arranging bonding agent hand-hole 7, inner surface side bonding agent squit hole 8a and outer surface side bonds agent squit hole 8b in permanent magnet 4 respectively, thus can behind the position of expectation permanent magnet 4 being configured in permanent magnet submerged hole 3, in the position of regulation, with the bonding capacity of regulation and bond area adhesive-applying 10, therefore, bonding agent 10 can not be peeled off in the edge in permanent magnet submerged hole 3, can realize high bonding of reliability.In addition, by in the radial surfaces externally and internally centre of the rotor core 1 in permanent magnet submerged hole 3, namely along rotating shaft 2 axis and with inner surface side bonding agent squit hole 8a, the position that outer surface side bonds agent squit hole 8b is relative, the groove of thinner flat pattern is set, i.e. inner surface side channel 5a and outer surface side channel 5b, thus inner surface side channel 5a and outer surface side channel 5b becomes the bonding agent accumulation portion of bonding agent 10, the bonding agent 10 sprayed from inner surface side bonding agent squit hole 8a and outer surface side bonds agent squit hole 8b can be utilized, with the bonding capacity of regulation and bond area, permanent magnet 4 is fixed in permanent magnet submerged hole 3 accurately.Its result, the adhesive strength expected is obtained between permanent magnet 4 and permanent magnet submerged hole 3, therefore, it is possible to suppress the amount of unbalance of rotor, two faces place being coated with bonding agent 10 at permanent magnet 4 will be caused to peel off due to the moment of torsion when startup of rotor stops and centrifugal force, the damage of rotor can be prevented.
In addition, at the bonding agent 10 injected from bonding agent inlet 6 through bonding agent hand-hole 7, and when spraying from inner surface side bonding agent squit hole 8a and outer surface side bonds agent squit hole 8b, if the diameter being designed to inner surface side bonding agent squit hole 8a is greater than the diameter of outer surface side bonds agent squit hole 8b, then based on the difference in areas of bonding agent squit hole, the bonding agent 10 of inner surface side carries out bonding with the amount more than outer surface side.Its result, the adhesive strength in the face relative with the inner surface side bonding agent squit hole 8a of permanent magnet 4 uprises, eliminate by means of only the relative face of the outer surface side bonds agent squit hole 8b with permanent magnet 4 and carry out bonding situation with rotor core 1, therefore, moment of torsion when even if effect has the startup of rotor to stop and centrifugal force, the stress that the outer surface side leading section of rotor core 1 thinner wall section of inside, permanent magnet submerged hole 3 bears also can not become large, can prevent the fatigue rupture of rotor core 1.
In addition, landfill is carried out by using the space of composite material to bonding agent hand-hole 7, inner surface side bonding agent squit hole 8a and outer surface side bonds agent squit hole 8b of iron powder 9 and bonding agent 10, thus carry out compared with landfill with only using bonding agent 10 pairs of spaces, the impact of iron powder 9 can be utilized and improve the magnetic characteristic of rotor, the performance of motor is improved.
Embodiment 2
In embodiment 1, inner surface side bonding agent squit hole 8a and outer surface side bonds agent squit hole 8b configures along the radial direction of rotor core 1 to become coaxial mode on permanent magnet 4, and bonding agent squit hole quantity is identical, but also can be configured to: along the radial direction of rotor core 1, but the quantity of bonding agent squit hole is different with outer surface side in inner surface side.
Fig. 5 is the axial sectional elevation of the structure of the permanent magnet submerged type rotor representing motor, is the cutaway view along the line X-X ' in Fig. 1, and Fig. 6 is the three-view diagram of the permanent magnet of the permanent magnet submerged type rotor of motor, and wherein, this rotor represents embodiments of the invention 2.In this embodiment 2, as shown in Figure 6, change the quantity of bonding agent squit hole in inner surface side and outer surface side, the mode that the quantity of face side bonding agent squit hole 81b is less than the quantity of inner surface side bonding agent squit hole 81a in addition designs.Its result, the quantity of bonding agent squit hole is different at surfaces externally and internally, and therefore, the bonding amount of the bonding agent 10 in the face relative with the inner surface side bonding agent squit hole 8a of permanent magnet 4, more than the face relative with outer surface side bonds agent squit hole 8b.
In addition, if change the quantity of bonding agent squit hole in inner surface side and outer surface side, the mode that the quantity of face side bonding agent squit hole 81b is less than the quantity of inner surface side bonding agent squit hole 81a in addition designs, and the mode being simultaneously greater than the diameter of outer surface side bonds agent squit hole 81b with the diameter of inner surface side bonding agent squit hole 81a designs, then based on the difference in areas of bonding agent squit hole, the bonding agent 10 of inner surface side carries out bonding with the amount more than outer surface side.
Embodiment 3
In embodiment 1, following situation is illustrated, namely, as the groove piling up bonding agent 10, and in the radial surfaces externally and internally centre of the rotor core 1 being arranged at the permanent magnet submerged hole 3 in rotor core 1, namely along rotating shaft 2 axis and with inner surface side bonding agent squit hole 8a, the position that outer surface side bonds agent squit hole 8b is relative, be respectively arranged with groove and the inner surface side channel 5a and outer surface side channel 5b of thinner flat pattern, but be not limited thereto, even if arrange the groove of the flat pattern for piling up bonding agent 10 on the surface of permanent magnet 4 side, also same effect can be obtained.
Fig. 7 is the front view of the structure of the permanent magnet submerged type rotor representing motor, Fig. 8 is the axial sectional elevation of the structure of the permanent magnet submerged type rotor representing motor, be the cutaway view along the line Y-Y ' in Fig. 7, wherein, this rotor represents embodiments of the invention 3.Fig. 9 is the three-view diagram of the permanent magnet of the permanent magnet submerged type rotor of motor, and wherein, this rotor represents embodiments of the invention 3.In this embodiment 3, as shown in Figure 9, overlapping with bonding agent hand-hole 7 along the axis of the rotating shaft 2 of permanent magnet 4, in the surfaces externally and internally central authorities of permanent magnet 4, namely with along the axis of rotating shaft 2 and the mode overlapping with inner surface side bonding agent squit hole 8a, outer surface side bonds agent squit hole 8b is respectively arranged with inner surface side channel 11a and the outer surface side channel 11b of thinner flat pattern.And, on the surface of inner surface side channel 11a and outer surface side channel 11b, be respectively arranged with inner surface side bonding agent squit hole 8a and outer surface side bonds agent squit hole 8b, they are combined in vertical direction with bonding agent hand-hole 7, and the radial direction along rotor core 1 is through.Its result, with that illustrate in embodiment 1, central at the radial surfaces externally and internally of the rotor core 1 in permanent magnet submerged hole 3, namely along rotating shaft 2 axis and be respectively arranged with the situation of the groove of thinner flat pattern and inner surface side channel 5a and outer surface side channel 5b similarly with inner surface side bonding agent squit hole 8a, position that outer surface side bonds agent squit hole 8b is relative, by bonding agent 10 is deposited in these two grooves of inner surface side channel 11a and outer surface side channel 11b, thus permanent magnet 4 location can be fixed in permanent magnet submerged hole 3.
Embodiment 4
In embodiment 1, to bonding agent hand-hole 7 using the bonding agent inlet 6 arranged along the central portion axially in two faces of permanent magnet 4 of rotating shaft 2 as gateway, and be illustrated along the situation that the axis of rotating shaft 2 is through, but be not limited thereto, also can be designed as and one end of through bonding agent hand-hole 7 is sealed.
Figure 10 is the axial sectional elevation of the structure of the permanent magnet submerged type rotor representing motor, it is the cutaway view along the line X-X ' in Fig. 1, Figure 11 is the end of the rotor core of the permanent magnet submerged type rotor being positioned at motor and does not have the front view of the steel plate in permanent magnet submerged hole, wherein, this rotor represents embodiments of the invention 4.In the present embodiment 4, as shown in Figure 10, by the basis of the structure of embodiment 1, one end one-sided in rotor core 1 arranges the silicon steel plate 12 not having permanent magnet submerged hole 3, bonding agent inlet 6 can be defined as exist only on a direction.Its result, can prevent when the injection of bonding agent 10, bonding agent 10 sprays from the hole of the opposition side of bonding agent inlet 6, because the bonding agent 10 injected from bonding agent inlet 6 all sprays from inner surface side bonding agent squit hole 8a and outer surface side bonds agent squit hole 8b, therefore, it is possible to permanent magnet 4 location is fixed in permanent magnet submerged hole 3.
Embodiment 5
In embodiment 1, permanent magnet 4 is illustrated using radial direction as the situation of the structure of minor face using rotor core 1 circumference as long limit, but also can is the structure of permanent magnet 4 using rotor core 1 circumference as minor face and using radial direction as long limit.Figure 12 is the front view of the structure of the permanent magnet submerged type rotor representing motor, and Figure 13 is the three-view diagram of the permanent magnet of the permanent magnet submerged type rotor of motor, and wherein, this rotor represents embodiments of the invention 5.
In Figure 12 and Figure 13, label 15 is rotor cores, label 25 is the rotating shafts being embedded in rotor core 15 central portion, label 35 is permanent magnet submerged holes of square shape, it is corresponding with number of poles and be equally spaced arranged in rotor core 15, such as, as shown in figure 12, be formed with 10, this permanent magnet submerged hole is using the axis of radial direction as long limit along rotating shaft 25 through using the circumference of rotor core 15 as minor face, label 45 is permanent magnets, it is imbedded and is arranged in permanent magnet submerged hole 35, quantity is corresponding with number of poles, such as, there are 10 as shown in figure 12.Label 55a is inner surface side channel, and label 55b is outer surface side channel, inner surface side channel 55a and outer surface side channel 55b being axially disposed within permanent magnet submerged hole 35 along rotating shaft 25.Label 65 be at permanent magnet 45 using the circumference of rotor core 15 as minor face and using radial direction as the central portion in two faces of the rectangular shape on long limit, along the bonding agent inlet that the axis of rotating shaft 25 is arranged, label 75 is as gateway and the bonding agent hand-hole of through permanent magnet 45 using bonding agent inlet 65, label 85a is inner surface side bonding agent squit hole, label 85b is outer surface side bonds agent squit hole, inner surface side bonding agent squit hole 85a and outer surface side bonds agent squit hole 85b, permanent magnet 45 using rotating shaft 25 axially as long limit and using the circumference of rotor core 15 as minor face, along on the surface of the surfaces externally and internally of rotor core 15 radial direction, there is opening, and be bonded to each other in the vertical direction with bonding agent hand-hole 75.
Embodiment 6
In embodiment 1, the situation that the axial cross section of permanent magnet 4 is square shapes is illustrated, but also can be axial cross section is arc.Figure 14 is the front view of the structure of the permanent magnet submerged type rotor representing motor, and Figure 15 is the three-view diagram of the permanent magnet of the permanent magnet submerged type rotor of motor, and wherein, this rotor is embodiments of the invention 6.
In figures 14 and 15, label 16 is rotor cores, label 26 is the rotating shafts being embedded in rotor core 16 central portion, label 36 is arc permanent magnet submerged holes, it is corresponding with number of poles and be equally spaced arranged in rotor core 16, such as, as shown in figure 14, be formed with 10, the axis of this permanent magnet submerged hole using the circumference of rotor core 16 as long limit and using radial direction as minor face along rotating shaft 26 is through, and label 46 is permanent magnets, it is imbedded and is arranged in permanent magnet submerged hole 36, quantity is corresponding with number of poles, such as, has 10 as shown in figure 15.Label 56a is inner surface side channel, and label 56b is outer surface side channel, inner surface side channel 56a and outer surface side channel 56b being axially disposed within permanent magnet submerged hole 36 along rotating shaft 26.Label 66 is the central portions in two the arc faces using the circumference of rotor core 16 as long limit and using radial direction as minor face at permanent magnet 46, along the bonding agent inlet that the axis of rotating shaft 26 is arranged, label 76 is as gateway and the bonding agent hand-hole of through permanent magnet 46 using bonding agent inlet 66, label 86a is inner surface side bonding agent squit hole, label 86b is outer surface side bonds agent squit hole, inner surface side bonding agent squit hole 86a and outer surface side bonds agent squit hole 86b, permanent magnet 46 using rotating shaft 26 axially as long limit and using the circumference of rotor core 16 as minor face, along on the surface of the surfaces externally and internally of rotor core 16 radial direction, there is opening, and be bonded to each other in the vertical direction with bonding agent hand-hole 76.
Embodiment 7
In embodiment 1, the situation that the axial cross section of permanent magnet 4 is square shapes is illustrated, but also can is that a side on the long limit of the rotor core of axial cross section circumference is set to circular arc, the opposing party is set to straight line, radial direction is set to the structure of minor face.Figure 16 is the front view of the structure of the permanent magnet submerged type rotor representing motor, and Figure 17 is the three-view diagram of the permanent magnet of the permanent magnet submerged type rotor of motor, and wherein, this rotor represents embodiments of the invention 7.
In Figure 16 and Figure 17, label 17 is rotor cores, label 27 is the rotating shafts being embedded in rotor core 17 central portion, label 37 is permanent magnet submerged holes, it is corresponding with number of poles and be equally spaced arranged in rotor core 17, such as, as shown in figure 16, be formed with 10, this permanent magnet submerged hole has a side on long for the circumference of rotor core 17 limit is set to circular arc, the opposing party is set to straight line, using radial direction as minor face and along the through shape of the axis of rotating shaft 27, label 47 is permanent magnets, it is imbedded and is arranged in permanent magnet submerged hole 37, quantity is corresponding with number of poles, such as, there are 10 as shown in figure 17.Label 57a is inner surface side channel, and label 57b is outer surface side channel, inner surface side channel 57a and outer surface side channel 57b being axially disposed within permanent magnet submerged hole 37 along rotating shaft 27.Label 67 is, at permanent magnet 47, a side on long for the circumference of rotor core 17 limit is set to circular arc, the opposing party is set to straight line, using the central portion of radial direction as two faces of the shape of minor face, along the bonding agent inlet that the axis of rotating shaft 27 is arranged, label 77 is as gateway and the bonding agent hand-hole of through permanent magnet 47 using bonding agent inlet 67, label 87a is inner surface side bonding agent squit hole, label 87b is outer surface side bonds agent squit hole, inner surface side bonding agent squit hole 87a and outer surface side bonds agent squit hole 87b, permanent magnet 47 using rotating shaft 27 axially as long limit and using the circumference of rotor core 17 as minor face, along on the surface of the surfaces externally and internally of rotor core 17 radial direction, there is opening, and be bonded to each other in the direction vertical with bonding agent hand-hole 77.
The explanation of label
1 rotor core, 2 rotating shafts, 3 permanent magnet submerged holes, 4 permanent magnets, 5a, 11a inner surface side channel, 5b, 11b outer surface side channel, 6 bonding agent inlets, 7 bonding agent hand-holes, 8a, 81a inner surface side bonding agent squit hole, 8b, 81b outer surface side bonds agent squit hole, 9 iron powders, 10 bonding agents, 12 steel plates.
Claims (10)
1. the permanent magnet submerged type rotor of a motor, it is embedded with rotating shaft at the center of rotor core, this permanent magnet submerged type rotor has permanent magnet submerged hole, this permanent magnet submerged hole is corresponding with the number of poles of rotor and be arranged in described rotor core circumference at equal intervals, and it is through along described rotating shaft direction, this permanent magnet submerged hole each in the permanent magnet formed in the mode that can be housed in described permanent magnet submerged hole is installed
The feature of the permanent magnet submerged type rotor of this motor is,
Be provided with in described permanent magnet: bonding agent hand-hole, it is through along described rotating shaft direction; And bonding agent squit hole, described rotor core circumference to be combined with described bonding agent hand-hole as long limit by it by described rotating shaft direction on the surface of minor face,
The bonding agent described rotor core and described permanent magnet are fixed is used for from the ejection of this bonding agent squit hole.
2. the permanent magnet submerged type rotor of motor according to claim 1, is characterized in that,
Described bonding agent hand-hole and described bonding agent squit hole are arranged on the position not having magnetic flux line process of described permanent magnet.
3. the permanent magnet submerged type rotor of motor according to claim 1 and 2, is characterized in that,
Described bonding agent hand-hole and described bonding agent squit hole are arranged on the central portion of described permanent magnet.
4. the permanent magnet submerged type rotor of motor according to any one of claim 1 to 3, is characterized in that,
One end of described bonding agent hand-hole is sealed.
5. the permanent magnet submerged type rotor of motor according to any one of claim 1 to 4, is characterized in that,
Described bonding agent squit hole with described bonding agent hand-hole is vertical is combined.
6. the permanent magnet submerged type rotor of motor according to any one of claim 1 to 5, is characterized in that,
Described bonding agent squit hole is arranged on two relative with the radial surfaces externally and internally of the described rotor core in described permanent magnet submerged hole respectively faces.
7. the permanent magnet submerged type rotor of motor according to claim 6, is characterized in that,
The diameter of the described bonding agent squit hole relative with the described rotor core inner radial surface in described permanent magnet submerged hole, is greater than the diameter of the described bonding agent squit hole relative with the described rotor core radially-outer surface in described permanent magnet submerged hole.
8. the permanent magnet submerged type rotor of motor according to any one of claim 1 to 7, is characterized in that,
On the radial surfaces externally and internally of the described rotor core in described permanent magnet submerged hole, along described rotating shaft direction, be provided with groove in the position relative with described bonding agent squit hole.
9. the permanent magnet submerged type rotor of motor according to any one of claim 1 to 7, is characterized in that,
The radial surfaces externally and internally of the described rotor core of described permanent magnet is provided with groove, and this groove is overlapping with described bonding agent squit hole along described rotating shaft direction.
10. the permanent magnet submerged type rotor of motor according to any one of claim 1 to 9, is characterized in that,
Iron powder is mixed with in described bonding agent.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2012/003422 WO2013175541A1 (en) | 2012-05-25 | 2012-05-25 | Permanent magnet embedded rotor of motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104247215A true CN104247215A (en) | 2014-12-24 |
| CN104247215B CN104247215B (en) | 2016-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280072665.2A Expired - Fee Related CN104247215B (en) | 2012-05-25 | 2012-05-25 | The permanent magnet submerged type rotor of motor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5748911B2 (en) |
| CN (1) | CN104247215B (en) |
| WO (1) | WO2013175541A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110957827A (en) * | 2019-12-03 | 2020-04-03 | 重庆宝迪科技有限公司 | Rotor punching sheet structure beneficial to ensuring magnetic circuit symmetry |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020150627A (en) * | 2019-03-12 | 2020-09-17 | 日本電産株式会社 | Laminated iron core, stator, and rotor |
| JP2022139323A (en) | 2021-03-11 | 2022-09-26 | 本田技研工業株式会社 | Rotor, rotary electric machine, manufacturing method for the rotor, and magnet |
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| JP2005269804A (en) * | 2004-03-19 | 2005-09-29 | Toyota Motor Corp | Rotary electric machine |
| JP2007306726A (en) * | 2006-05-12 | 2007-11-22 | Mitsubishi Electric Corp | Magnet-embedded rotator and molding die |
| JP2009240109A (en) * | 2008-03-28 | 2009-10-15 | Brother Ind Ltd | Electric motor |
| JP2009284720A (en) * | 2008-05-26 | 2009-12-03 | Yaskawa Electric Corp | Permanent magnet type synchronous motor |
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| JP4566336B2 (en) * | 2000-05-31 | 2010-10-20 | 株式会社ソディック | Synchronous machine rotor |
| JP2006174655A (en) * | 2004-12-17 | 2006-06-29 | Nidec Sankyo Corp | Motor and its manufacturing method |
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2012
- 2012-05-25 JP JP2014516518A patent/JP5748911B2/en not_active Expired - Fee Related
- 2012-05-25 CN CN201280072665.2A patent/CN104247215B/en not_active Expired - Fee Related
- 2012-05-25 WO PCT/JP2012/003422 patent/WO2013175541A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005269804A (en) * | 2004-03-19 | 2005-09-29 | Toyota Motor Corp | Rotary electric machine |
| JP2007306726A (en) * | 2006-05-12 | 2007-11-22 | Mitsubishi Electric Corp | Magnet-embedded rotator and molding die |
| JP2009240109A (en) * | 2008-03-28 | 2009-10-15 | Brother Ind Ltd | Electric motor |
| JP2009284720A (en) * | 2008-05-26 | 2009-12-03 | Yaskawa Electric Corp | Permanent magnet type synchronous motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110957827A (en) * | 2019-12-03 | 2020-04-03 | 重庆宝迪科技有限公司 | Rotor punching sheet structure beneficial to ensuring magnetic circuit symmetry |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5748911B2 (en) | 2015-07-15 |
| CN104247215B (en) | 2016-11-09 |
| JPWO2013175541A1 (en) | 2016-01-12 |
| WO2013175541A1 (en) | 2013-11-28 |
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