CN1685586B - Magnet rotor for motor - Google Patents

Magnet rotor for motor Download PDF

Info

Publication number
CN1685586B
CN1685586B CN03822864.5A CN03822864A CN1685586B CN 1685586 B CN1685586 B CN 1685586B CN 03822864 A CN03822864 A CN 03822864A CN 1685586 B CN1685586 B CN 1685586B
Authority
CN
China
Prior art keywords
bonding agent
spring rate
temperature
magnet rotor
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN03822864.5A
Other languages
Chinese (zh)
Other versions
CN1685586A (en
Inventor
中岛秀树
原贺康介
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Shanghai Electric Elevator Co Ltd
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of CN1685586A publication Critical patent/CN1685586A/en
Application granted granted Critical
Publication of CN1685586B publication Critical patent/CN1685586B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • H02K1/278—Surface mounted magnets; Inset magnets
    • 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
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

A magnet rotor for motor, wherein the elastic modules and shear adhesive strength of adhesive agent in the motor usable temperature range of -40 to 140 DEG C are determined with a specific range, and the hardening coefficient of contraction of the adhesive agent is determined within a specified range, whereby the adhesive agent can be prevented from being peeled off from permanent magnets in a boundary, the permanent magnets can be prevented from cracking, and a specified adhesive strength can be provided.

Description

The motor magnet rotor
Technical field
The present invention relates to for example motor magnet rotor of the traction machine use of elevator.
Background technology
Known in the past motor is with magnet rotor (for example opening flat 07-79537 communique with reference to the spy), at yoke outer peripheral face as the drum of magnetic, utilize a plurality of permanent magnets of heat-curing type adhesive securement according to each utmost point in the axis direction connection, make this a series of permanent magnet separate predetermined distance and arrange, constitute multipole magnetic pole at circumferencial direction.
The adhesive linkage between yoke and permanent magnet that utilizes above-mentioned bonding agent to constitute, because the heating of the motor when environment and running are set, typical temperature is changing in-40 ℃～+ 100 ℃ left and right sides scopes approximately, at a high speed, in the big capacity motor, ceiling temperature reaches+140 ℃.In addition, the anisotropy of magnet is the direction vertical with bonding plane, and the direction vertical with anisotropy (the periphery direction of yoke) obtained negative coefficient of linear expansion.
In above-mentioned magnet rotor, the spring rate of bonding agent reduces under abominable temperature environment, exists shear bond strength and stretching adhesive strength to reduce, the problem that the reliability of bonding agent reduces.
And, moment of torsion and centrifugal force during owing to rotation, adhesive linkage is easy to generate micro-strain, thereby exists the motor characteristics problem of unstable.
And, because permanent magnet, adhesive linkage are different with yoke coefficient of linear expansion separately, so produce thermal stress respectively owing to variations in temperature, but when the spring rate of adhesive linkage uprises, it is big that the thermal stress of adhesive linkage becomes, and at the interface bonding that therefore exists adhesive linkage and permanent magnet peeled off, permanent magnet produces problems such as fracture.
And, when the spring rate of adhesive linkage uprises, exist and make motor bear problem thus from the corresponding reduction of resistance to impact of the impact of outside.
And, when solidifying, bonding agent to the process that solid changes, produces volume contraction from liquid, but when bonding agent produces cure shrinkage, apply the power of compression direction at the bonding plane of permanent magnet, bonding agent is then accepted the power of draw direction from permanent magnet, under the identical situation of the spring rate of bonding agent, cure shrinkage is big more, and curing shrinkage internal stress applies big more power at compression direction to the bonding plane of permanent magnet.After bonding agent solidified, because the variations in temperature of motor, bonding agent was also flexible, so the compression stress of following the temperature rising to be applied to the bonding plane of permanent magnet reduces, final tensile force acts on permanent magnet, and under the situation that temperature reduces, the compression stress at permanent magnet increases on the contrary.And under the excessive situation of cure shrinkage, in the serviceability temperature scope of motor, it is big that tensile force or compression stress become, and at the interface bonding that exists adhesive linkage and permanent magnet peeled off, permanent magnet produces the problem of fracture.
Summary of the invention
The objective of the invention is to address the above problem, by promptly spring rate, the shear bond strength of the bonding agent in-40 ℃～140 ℃ scopes are set within the limits prescribed the serviceability temperature of motor, the cure shrinkage of bonding agent is set within the limits prescribed, at the interface bonding that prevents bonding agent and permanent magnet peeled off and the fracture of permanent magnet, and obtains desired adhesive strength.
Motor magnet rotor of the present invention, when the bonding agent temperature was-40 ℃, the spring rate of described bonding agent was 1 * 10 8Pa～7 * 10 9In the Pa scope, in the time of 140 ℃, the spring rate of described bonding agent is 1 * 10 8Pa～2 * 10 9In the Pa scope, in-40 ℃～140 ℃ scopes, the lower limit 1 * 10 of the spring rate of described bonding agent when connecting-40 ℃ 8 Lower limit 1 * 10 when Pa and 140 ℃ 8The straight line of Pa, the higher limit 7 * 10 when being connected-40 ℃ 9 Higher limit 2 * 10 when Pa and 140 ℃ 9In the zone between the straight line of Pa, and the cure shrinkage of described bonding agent when solidifying under 23 ℃～25 ℃ temperature be 8%～15%, and be 1 * 10 at the spring rate E of described bonding agent (Pa) 8Pa～7 * 10 9In the time of in the Pa scope, the value of the shear bond strength τ (MPa) of described bonding agent is between formula (1) and formula (2), and this bonding agent is a bonding agent for the dual liquid type modified acroleic acid.
Logτ＝0.477logE-2.816…………(1)
Logτ＝0.477logE-3.339…………(2)
Description of drawings
Fig. 1 is the stereogram of motor of the present invention with magnet rotor.
Fig. 2 is the performance plot of relation of temperature-spring rate of bonding agent of the adhesive linkage of expression pie graph 1.
Fig. 3 is the performance plot of relation of spring rate-shear bond strength of bonding agent of the adhesive linkage of expression pie graph 1.
Fig. 4 is the performance plot of relation of temperature-internal stress of bonding agent of the adhesive linkage of expression pie graph 1.
Embodiment
Below, with reference to description of drawings preferred implementation of the present invention, but in execution mode, same parts, position or corresponding component, position are given prosign and described.
Fig. 1 is the stereogram of motor of the present invention with magnet rotor, and this motor is assemblied on the motor of elevator traction machine with magnet rotor.
This motor has with magnet rotor: the yoke 1 that is made of the magnetic of drum; At the outer peripheral face of this yoke 1, at axis direction and separate a plurality of permanent magnets 2 of the arranged spaced of regulation at circumferencial direction; And by this permanent magnet 2 is bonded in the adhesive linkage 3 that the room temperature curing type bonding agent on the yoke 1 constitutes.This permanent magnet 2 is sheet neodymium sintered magnets (Nd-Fe-B).
This motor moment of torsion of the adhesive linkage 3 of magnet rotor according to motor needs to have the shear bond strength more than the 3MPa in-40 ℃～140 ℃ whole temperature province.
The application's inventor has investigated the characteristic that constitutes the room temperature curing type bonding agent of adhesive linkage 3 by carrying out thermal cycling test etc.
Below, various embodiments of the present invention are described.
Embodiment 1
Bonding agent of the present invention is that the dual liquid type modified acroleic acid is bonding agent (being called the invention bonding agent later on), its constituent of table 1 expression.In addition, though not shown in this table 1, as curing catalysts, added the cumene hydroperoxide of necessary amount to A reagent, added the acetylacetone,2,4-pentanedione vanadyl of necessary amount to B reagent.
Table 1
The composition title A reagent B reagent
Acrylonitrile-butadiene rubber methyl methacrylate-butadiene-styrol copolymer 15％ 15％
Methyl methacrylate 40％ 40％
2-hydroxyethyl methacrylate 15％ 15％
Double cyclopentenyl oxygen ethyl-methyl acrylate 10％ 10％
Methacrylic acid 15％ 15％
The acrylic compounds oligomer 5％ 5％
The A reagent of biliquid and the biliquid proportioning of B reagent are 1: 1.
At thickness is on the iron block of 30mm, the side by side wide 22mm that makes by sheet neodymium sintered magnet (Nd-Fe-B) of configuration 10 (length overall 500mm), the test film of long 50mm, thick 6mm on its length direction, use the invention bonding agent under room temperature (23 ℃～25 ℃) temperature conditions, to place 24 hours, make curing, bonding.
Then, respectively after placing 2 hours under-40 ℃ of environment, make test film ambient temperature rise to 140 ℃ with 2 hours, placement 2 hours under 140 ℃ of environment then.Afterwards, made ambient temperature drop to-40 ℃ again with 2 hours from 140 ℃.This as a circulation, is added up to and carry out 300 circulations, the test film that uses the invention bonding agent is observed.
In this thermal cycling test, do not produce bonding the peeling off at the interface of fracture, adhesive linkage and the test film of test film.
The relation of the spring rate when in addition, the present application person has measured temperature and this temperature to the foregoing invention bonding agent.Fig. 2 is the performance plot of this moment.
According to this figure, under the use lower limit temperature of motor was-40 ℃, the spring rate E of invention bonding agent was 4 * 10 9Pa, under the SC service ceiling temperature of motor was 140 ℃, the spring rate E of invention bonding agent was 3.8 * 10 8Pa distinguishes that spring rate E reduces with the rising of temperature.And the cure shrinkage of this invention bonding agent under 23 ℃～25 ℃ is 13%.
The relation of shear bond strength τ when in addition, the application's inventor has measured spring rate E and this spring rate E to described invention bonding agent.When carrying out this mensuration, the invention bonding agent was placed 24 hours under room temperature (23 ℃～25 ℃) temperature conditions, test film is bonded on the iron block.And, use the pull-up universal testing machine of A Musi that the test film that is bonded on the iron block is applied weighing load, measured the shear bond strength of bonding agent.
Fig. 3 is the performance plot of this moment.In this Fig. 3, shear bond strength τ increases with the increase of the spring rate E of invention bonding agent, is 1 * 10 at spring rate E 8Pa～7 * 10 9During the Pa scope, shear bond strength τ is between the relational expression (line of formula among the figure (2)) of the relational expression (line of formula among the figure (1)) of lg τ=0.477lgE-2.816 and lg τ=0.477lgE-3.339.
; according to the moment of torsion of motor, in-40 ℃～140 ℃ whole temperature province, need the above shear bond strength of 3MPa; so promptly under 140 ℃, need guarantee the shear bond strength that 3MPa is above in the higher limit of this temperature province of the lower limit of expression shear bond strength.
Bonding agent of the present invention as shown in Figure 2, the spring rate E during this temperature is 3.8 * 10 8Pa, and according to Fig. 3, the shear bond strength that is equivalent to this spring rate E is more than the 3MPa, can guarantee sufficient shear bond strength so distinguish the whole temperature province (40 ℃～140 ℃) in the serviceability temperature scope of motor.
Like this,,, distinguish that the bonding agent at the interface of fracture, adhesive linkage and the test film that can not produce test film is peeled off, and guarantee the shear bond strength of required abundance durable in use in the serviceability temperature zone of motor using under the situation of bonding agent of the present invention.
Embodiment 2
As the 1st bonding agent, the amount of the methacrylic acid of the composition of invention bonding agent shown in the adjustment form 1 has been made bonding agent in 5%～25% scope, so that this bonding agent is when temperature is-40 ℃, the spring rate of bonding agent is 1 * 10 8Pa～7 * 10 9In the Pa scope, in the time of 140 ℃, the spring rate of bonding agent is 1 * 10 8Pa～2 * 10 9In the Pa scope, in the time of-40 ℃～140 ℃, the lower limit 1 * 10 of the spring rate of described bonding agent when connecting-40 ℃ 8 Lower limit 1 * 10 when Pa and 140 ℃ 8The straight line of Pa, the higher limit 7 * 10 when being connected-40 ℃ 9 Higher limit 2 * 10 when Pa and 140 ℃ 9In the zone between the straight line of Pa.At this moment, the cure shrinkage of the 1st bonding agent under 23 ℃～25 ℃ temperature is in 8%～15% scope.
As the 2nd bonding agent, the amount that makes the methacrylic acid of the bonding agent of invention shown in the table 1 composition is more than the 25 weight %, and the spring rate E that has made bonding agent is 7 * 10 in the time of-40 ℃ 9Pa is above, in the time of 140 ℃, be 2 * 10 9The bonding agent that Pa is above.At this moment, the cure shrinkage of the 2nd bonding agent under 23 ℃～25 ℃ temperature is in 8%～15% scope.
As the 3rd bonding agent, the amount that makes the methacrylic acid of the bonding agent of invention shown in the table 1 composition is below the 5 weight %, and the spring rate E that has made bonding agent is 1 * 10 when-40 ℃ and 140 ℃ 8The bonding agent that Pa is following.At this moment, the cure shrinkage of the 3rd bonding agent under 23 ℃～25 ℃ temperature is in 8%～15% scope.
And, the 1st bonding agent～the 3rd bonding agent has been carried out and the identical thermal cycling test of embodiment 1 described bonding agent.
In addition, about the 1st bonding agent～the 3rd bonding agent, under room temperature (23 ℃～25 ℃) temperature conditions, placed 24 hours, it is bonding that test film is solidified on iron block, then under 140 ℃ of atmosphere temperatures, use the pull-up universal testing machine of A Musi that the test film that is bonded on the iron block is applied weighing load, measured the shear bond strength of bonding agent.
As a result, the 1st bonding agent does not produce bonding peeling off at the interface bonding agent and permanent magnet, and permanent magnet also produces fracture.And the shear bond strength under 140 ℃ of atmosphere temperatures can be guaranteed more than the 3MPa in measuring.
The 2nd bonding agent is bonding the peeling off of generation at the interface of bonding agent and permanent magnet.
The 3rd bonding agent does not produce bonding peeling off at the interface bonding agent and permanent magnet, and permanent magnet also produces fracture.But the shear bond strength under 140 ℃ of atmosphere temperatures is lower than 3MPa in measuring.
Distinguish that according to the foregoing description the 1st bonding agent can be used for the magnet rotor of the motor of traction machine, but the 2nd bonding agent and the 3rd bonding agent are not suitable for.
Embodiment 3
As the 1st bonding agent, use the bonding agent identical with the 1st bonding agent of embodiment 2.
As the 2nd bonding agent, using the spring rate E of bonding agent is 4.0 * 10 in the time of-40 ℃ 9Pa, in the time of 140 ℃, be 1.3 * 10 9Cure shrinkage when Pa and 23 ℃ is 3% bonding agent (Mitsui Chemicals (strain) system EH455).
As the 3rd bonding agent, having made spring rate E is 4 * 10 in the time of-40 ℃ 9Pa, in the time of 140 ℃, be 1.1 * 10 8Pa, and the amount of the methyl methacrylate of invention bonding agent composition shown in the increase table 1, the cure shrinkage in the time of 23 ℃ is 16% bonding agent.
And, the 1st bonding agent～the 3rd bonding agent has been carried out and the identical thermal cycling test of embodiment 1 described bonding agent.
As a result, the 1st bonding agent is as described in the embodiment 2, bonding agent and permanent magnet do not produce bonding peeling off at the interface, permanent magnet also produces fracture.
The 2nd bonding agent is bonding the peeling off of generation at the interface of bonding agent and permanent magnet.The bonding agent that uses among this bonding agent and the embodiment 1,2 is compared, and cure shrinkage reduces, and curing shrinkage internal stress shown in Figure 4 (the arrow ィ among Fig. 4) reduces, that is, the oblique line integral body among the figure moves downwards.Therefore think at high temperature that bonding agent imposes on bonding agent when expanding compression stress increases, the result produces above-mentioned bonding peeling off.
The 3rd bonding agent is bonding the peeling off of generation at the interface of bonding agent and permanent magnet.The bonding agent that uses among this bonding agent and the embodiment 1,2 is compared, and cure shrinkage increases, and curing shrinkage internal stress shown in Figure 4 (the arrow ィ among Fig. 4) increases, that is, the oblique line integral body among the figure is moved upward.Therefore think at low temperatures that bonding agent imposes on bonding agent when shrinking tensile stress increases, the result has produced above-mentioned bonding peeling off.
On the other hand, in the present embodiment, the cure shrinkage when the 1st bonding agent uses 23 ℃ is 8%～15% bonding agent, and act on the stress approximate zero of adhesive linkage this moment as shown in Figure 4 when the medium temperature of serviceability temperature is 50 ℃.Promptly, in Fig. 4, follow the cure shrinkage of bonding agent, shown in arrow ィ, produce stress at adhesive linkage, in temperature when this room temperature descends, stress rises according to the arrow Ha, when this room temperature rose, stress reduced according to the arrow mouth in temperature, and the stress that promptly acts on adhesive linkage in the medium temperature of serviceability temperature 50 ℃ the time is almost nil.
In addition, under the situation of using the little bonding agent of spring rate and coefficient of linear expansion, the preferred consolidation shrinkage is bigger, and under the situation of using the big bonding agent of spring rate and coefficient of linear expansion, the preferred consolidation shrinkage is less.
In addition, about being the proportioning of bonding agent, having illustrated that as an example ratio of A reagent, B reagent is 1: 1 a situation, but can in 2: 1～1: 2 scope, be applied at the dual liquid type modified acroleic acid shown in each embodiment.
And, about permanent magnet the neodymium sintered magnet has been described, but has been not limited thereto certainly, for example also can use neodymium, iron, boron based magnet, samarium, cobalt based magnet, ferrite based magnet.
And this invention bonding agent is not limited to the motor of elevator traction machine, can certainly be applicable to the identical motor of motor of environment for use and elevator traction machine.
As mentioned above, the present invention can be used as the motor magnet rotor of motor serviceability temperature traction machine in-40 ℃～140 ℃ scopes, for example elevator, and can prevent bonding peeling off and the permanent magnet fracture, and has sufficient adhesive strength.

Claims (4)

1. a motor magnet rotor on the outer peripheral face of the yoke that the magnetic by drum constitutes, utilizes bonding agent to be bonded with a plurality of permanent magnets,
When described bonding agent temperature was-40 ℃, the spring rate of described bonding agent was 1 * 10 8Pa～7 * 10 9In the Pa scope, in the time of 140 ℃, the spring rate of described bonding agent is 1 * 10 8Pa～2 * 10 9In the Pa scope, in-40 ℃～140 ℃ scopes, the lower limit 1 * 10 of the spring rate of described bonding agent when connecting-40 ℃ 8Lower limit 1 * 10 when Pa and 140 ℃ 8The straight line of Pa, the higher limit 7 * 10 when being connected-40 ℃ 9Higher limit 2 * 10 when Pa and 140 ℃ 9In the zone between the straight line of Pa,
And the cure shrinkage when described bonding agent solidifies under 23 ℃～25 ℃ temperature is 8%～15%,
And, be 1 * 10 at the spring rate E of described bonding agent (Pa) 8Pa～7 * 10 9In the time of in the Pa scope, the value of the shear bond strength τ (MPa) of described bonding agent between formula (1) and formula (2),
Lgτ＝0.477lgE-2.816…………(1)
Lgτ＝0.477lgE-3.339…………(2)
Described bonding agent is a bonding agent for the dual liquid type modified acroleic acid.
2. motor magnet rotor according to claim 1, described bonding agent be in described 140 ℃ and described-40 ℃ medium temperature promptly 50 ℃ the time, and the internal stress of bonding agent is zero or approximate zero.
3. motor magnet rotor according to claim 1 and 2, described bonding agent are that the dual liquid type modified acroleic acid is a bonding agent, and biliquid all comprises the methacrylic acid of 5 weight %～25 weight %.
4. motor magnet rotor according to claim 1 and 2 is the motor magnet rotor of elevator hoist.
CN03822864.5A 2003-02-27 2003-02-27 Magnet rotor for motor Expired - Lifetime CN1685586B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2003/002241 WO2004077641A1 (en) 2003-02-27 2003-02-27 Magnet rotor for motor

Publications (2)

Publication Number Publication Date
CN1685586A CN1685586A (en) 2005-10-19
CN1685586B true CN1685586B (en) 2010-05-05

Family

ID=32923099

Family Applications (1)

Application Number Title Priority Date Filing Date
CN03822864.5A Expired - Lifetime CN1685586B (en) 2003-02-27 2003-02-27 Magnet rotor for motor

Country Status (4)

Country Link
JP (1) JPWO2004077641A1 (en)
CN (1) CN1685586B (en)
DE (1) DE10393311T5 (en)
WO (1) WO2004077641A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006015037A1 (en) * 2006-03-31 2007-10-11 Siemens Ag Rotor of a permanent magnet synchronous machine
JP6266138B2 (en) * 2015-01-30 2018-01-24 三菱電機株式会社 Elevator hoist motor and actuator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6045898A (en) * 1996-02-02 2000-04-04 Toray Industried, Inc. Resin compositions for fiber-reinforced composite materials and processes for producing the same, prepregs, fiber-reinforced composite materials, and honeycomb structures
CN1250554A (en) * 1997-02-21 2000-04-12 埃莫森电器公司 Rotor assembly for a rotating machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0779537A (en) * 1993-09-08 1995-03-20 Toyota Motor Corp Method and apparatus for fixing rotor magnet of motor
JP2002078257A (en) * 2000-08-24 2002-03-15 Mitsubishi Electric Corp Motor and rotor thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6045898A (en) * 1996-02-02 2000-04-04 Toray Industried, Inc. Resin compositions for fiber-reinforced composite materials and processes for producing the same, prepregs, fiber-reinforced composite materials, and honeycomb structures
CN1250554A (en) * 1997-02-21 2000-04-12 埃莫森电器公司 Rotor assembly for a rotating machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP平7-79537A 1995.03.20

Also Published As

Publication number Publication date
CN1685586A (en) 2005-10-19
WO2004077641A1 (en) 2004-09-10
DE10393311T5 (en) 2005-09-01
JPWO2004077641A1 (en) 2006-06-08

Similar Documents

Publication Publication Date Title
CN107210112B (en) Magnet convered structure
US8853908B2 (en) Magnet rotor assembly including a vacuum impregnated bonded magnet having increased crush strength at high temperatures
KR20210075179A (en) Adhesive laminated core, manufacturing method thereof and rotating electric machine
US20140024765A1 (en) Resin material, manufacturing method thereof, repairing method thereof, and various components using the same
JP7322701B2 (en) Resin composition, heat storage material, and article
WO2016063802A1 (en) Tacky gel sheet having adhesive applications, method for producing same, method for fixing a pair of objects, and composite material
CN1685586B (en) Magnet rotor for motor
US11710597B2 (en) Method for the production of an inductive charging device
KR20220016296A (en) Sealing liquid epoxy resin composition and electronic component device
JPWO2015046199A1 (en) Heat curable magnetic adhesive composition and adhesive sheet
KR102617131B1 (en) Curing composition
JP2009155370A (en) Epoxy resin molding material for sealing motor and molded article
CN112961498A (en) High-compatibility organic silicon phenolic epoxy resin composite material and preparation method thereof
WO2022220295A1 (en) Magnetic powder, compound, molded body, bonded magnet, and powder magnetic core
JP6393737B2 (en) Rare earth bonded magnet
JP2017197698A (en) Particle having core-shell structure and method for producing the same
EP3480272B1 (en) Radical-curable adhesive composition and adhesive
JP2011520023A (en) Curable compositions and their use
JP2015228757A (en) IPM motor
KR100680417B1 (en) Magnet rotor for a motor
JP2017139408A (en) Thermosetting sheet for hollow sealing of semiconductor device and semiconductor device hollow-sealed using the same
JP2016018828A (en) Heating element sealing material, guidance device sealing material, method for manufacturing heating element sealing material, and method for manufacturing guidance device sealing material
CN110556244A (en) Process for preparing high-coercivity neodymium-iron-boron magnet by diffusion method
WO2016002906A1 (en) Method for producing heat-generating element sealed article
US10629342B2 (en) Rare earth bonded magnet

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: MITSUBISHI ELECTRIC SHANGHAI ELECTRIC ELEVATOR CO.

Free format text: FORMER OWNER: MITSUBISHI ELECTRIC CORPORATION

Effective date: 20120803

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; TO: 201108 MINHANG, SHANGHAI

TR01 Transfer of patent right

Effective date of registration: 20120803

Address after: 201108 Minhang District, Shanghai Road, No. 1211 spring

Patentee after: MITSUBISHI ELECTRIC SHANGHAI ELECTRIC ELEVATOR Co.,Ltd.

Address before: Tokyo, Japan

Patentee before: MITSUBISHI ELECTRIC Corp.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20100505