TWI637582B - Rotor of induction motor and induction motor - Google Patents
Rotor of induction motor and induction motor Download PDFInfo
- Publication number
- TWI637582B TWI637582B TW106123044A TW106123044A TWI637582B TW I637582 B TWI637582 B TW I637582B TW 106123044 A TW106123044 A TW 106123044A TW 106123044 A TW106123044 A TW 106123044A TW I637582 B TWI637582 B TW I637582B
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- Prior art keywords
- rotor
- end ring
- reinforcing member
- inclined surface
- peripheral portion
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- 230000006698 induction Effects 0.000 title claims abstract description 38
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 127
- 230000002093 peripheral effect Effects 0.000 claims abstract description 91
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 32
- 230000004048 modification Effects 0.000 description 32
- 238000012986 modification Methods 0.000 description 32
- 239000004020 conductor Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 14
- 239000000463 material Substances 0.000 description 10
- 230000035882 stress Effects 0.000 description 10
- 230000008602 contraction Effects 0.000 description 8
- 230000002787 reinforcement Effects 0.000 description 7
- 238000004512 die casting Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
- H02K17/168—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors having single-cage rotors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Induction Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
本發明提供一種感應電動機之轉子(100-1)，係具備有：轉子鐵芯(1)；軸桿(2)，係貫通轉子鐵芯(1)；端環(3-1、3-2)，係設置於轉子鐵芯(1)的端部；以及補強構件(4-1、4-2)，係設置於軸桿(2)與端環(3-1、3-2)的內周部(3a)之間，且外周部(4a)與端環(3-1、3-2)接觸；設置於端環(3-1、3-2)的內周部(3a)的第一突起部(3b)係嵌入在設置於補強構件(4-1、4-2)之外周部(4a)的第一溝部(4b)內。 The invention provides a rotor (100-1) of an induction motor, comprising: a rotor core (1); a shaft (2), penetrating the rotor core (1); and an end ring (3-1, 3-2) ) Is provided at the end of the rotor core (1); and the reinforcing member (4-1, 4-2) is provided inside the shaft (2) and the end ring (3-1, 3-2) Between the peripheral parts (3a), and the outer peripheral part (4a) is in contact with the end ring (3-1, 3-2); the first peripheral part (3a) of the end ring (3-1, 3-2) is provided A protruding portion (3b) is embedded in the first groove portion (4b) provided on the outer peripheral portion (4a) of the reinforcing member (4-1, 4-2).
Description
本發明係關於一種感應電動機之轉子及感應電動機。 The invention relates to a rotor of an induction motor and an induction motor.
近年來，對於工具機用的感應電動機的高速旋轉化的需求高騰，而為了因應這樣的需求，感應電動機之轉子必須確保可承受高速旋轉時所產生之離心力的強度。專利文獻1所揭示之習知的轉子係具備有：轉子鐵芯、設置於轉子鐵芯內部的導體桿、設置於轉子鐵芯之端部並作為連接於導體桿之端路環的端環、以及覆蓋端環的補強構件。補強構件係由比構成端環之材料具有較高剛性的材料來製造，且具備嵌合於端環之外周部的外環狀部。外環狀部的內周部係接觸於端環的外周部。於專利文獻1所揭示之習知的轉子，係藉由使補強構件的外環狀部接觸於端環的外周部，從而抑制肇因於離心力的端環之變形。 In recent years, the demand for high-speed rotation of induction motors for machine tools has increased, and in order to respond to such demands, the rotor of the induction motor must be able to withstand the strength of the centrifugal force generated during high-speed rotation. The conventional rotor system disclosed in Patent Document 1 includes a rotor core, a conductor rod provided inside the rotor core, an end ring provided at an end portion of the rotor core, and an end ring connected to the conductor rod, And a reinforcing member covering the end ring. The reinforcing member is made of a material having a higher rigidity than a material constituting the end ring, and includes an outer ring portion fitted to an outer peripheral portion of the end ring. The inner peripheral portion of the outer annular portion is in contact with the outer peripheral portion of the end ring. In the conventional rotor disclosed in Patent Document 1, the outer ring portion of the reinforcing member is brought into contact with the outer peripheral portion of the end ring, thereby suppressing deformation of the end ring due to centrifugal force.
此外，於專利文獻2所揭示的轉子中，係揭示有一種補強構件設置於端環之內周部的構造。 In addition, the rotor disclosed in Patent Document 2 discloses a structure in which a reinforcing member is provided on an inner peripheral portion of an end ring.
專利文獻1：日本特開2015-159696號公報 Patent Document 1: Japanese Patent Application Laid-Open No. 2015-159696
專利文獻2：日本特開昭59-35554號公報 Patent Document 2: Japanese Patent Application Laid-Open No. 59-35554
然而，於專利文獻1所揭示之習知的轉子會有下述課題：在轉子高速旋轉時，補強構件的外環狀部會因端環而朝徑方向擴展且塑性變形時，無法維持抑制端環變形的效果，而會有在比設置壽命還短的期間需要更換轉子的情形。 However, the conventional rotor disclosed in Patent Document 1 has a problem that when the rotor rotates at a high speed, the outer annular portion of the reinforcing member expands in the radial direction due to the end ring and is plastically deformed, the suppression end cannot be maintained As a result of the deformation of the ring, the rotor may need to be replaced during a period shorter than the installation life.
於專利文獻2所揭示的轉子中，補強構件未產生因端環而朝徑方向擴展的問題，雖可獲得抑制因離心力所造成之端環變形的效果，但其效果不明顯。 In the rotor disclosed in Patent Document 2, there is no problem that the reinforcing member expands in the radial direction due to the end ring. Although the effect of suppressing deformation of the end ring due to centrifugal force is obtained, the effect is not obvious.
本發明係有鑑於上述課題所研創者，其目的在於獲得一種可抑制轉子壽命降低的感應電動機之轉子。 The present invention has been made in view of the above-mentioned problems, and an object thereof is to obtain a rotor of an induction motor capable of suppressing a reduction in rotor life.
為了解決上述課題並達成目的：本發明的感應電動機之轉子係具備有：轉子鐵芯；貫通轉子鐵芯的軸桿；設置於轉子鐵芯之端部的環狀的端環；以及設置於軸桿與端環的內周部之間，且外周部與端環接觸的環狀之補強構件。而且，設置於端環的內周部的第一突起部係嵌入在設置於補強構件之外周部的第一溝部內。 In order to solve the above problems and achieve the object, a rotor system of an induction motor according to the present invention includes: a rotor core; a shaft rod penetrating through the rotor core; an annular end ring provided at an end of the rotor core; and a shaft An annular reinforcing member between the rod and the inner peripheral portion of the end ring, and the outer peripheral portion being in contact with the end ring. The first protruding portion provided on the inner peripheral portion of the end ring is fitted into the first groove portion provided on the outer peripheral portion of the reinforcing member.
本發明的感應電動機之轉子係達成：可抑制 轉子之壽命降低的效果。 The rotor system of the induction motor of the present invention achieves: The effect of reduced rotor life.
1‧‧‧轉子鐵芯 1‧‧‧rotor core
1a,4c‧‧‧貫通孔 1a, 4c‧‧‧through hole
1b1,6a‧‧‧一端部 1b1,6a‧‧‧One end
1b2,6b‧‧‧另一端部 1b2,6b‧‧‧The other end
2‧‧‧軸桿 2‧‧‧ shaft
3-1,3-1A,3-1B,3-2,3-2A,3-2B‧‧‧端環 3-1,3-1A, 3-1B, 3-2,3-2A, 3-2B‧‧‧End ring
3a,3a1‧‧‧內周部 3a, 3a1‧‧‧Inner periphery
3b‧‧‧第一突起部 3b‧‧‧first protrusion
3b1‧‧‧第二突起部 3b1‧‧‧Second protrusion
3c‧‧‧端部 3c‧‧‧End
3d,3d1‧‧‧第二傾斜面 3d, 3d 1‧‧‧ second inclined plane
3e,4e‧‧‧端部 3e, 4e‧‧‧End
4-1,4-1A,4-1B,4-2,4-2A,4-2B‧‧‧補強構件 4-1, 4-1A, 4-1B, 4-2, 4-2A, 4-2B
4a,4a1,4a2,4a3‧‧‧外周部 4a, 4a1,4a2,4a3
4b‧‧‧第一溝部 4b‧‧‧First groove
4b1‧‧‧第二溝部 4b1‧‧‧Second groove
4d,4d1‧‧‧第一傾斜面 4d, 4d1‧‧‧First inclined plane
5‧‧‧鐵芯插槽 5‧‧‧ core slot
6‧‧‧導體桿 6‧‧‧conductor rod
41‧‧‧第一環狀部 41‧‧‧first ring
42‧‧‧第二環狀部 42‧‧‧Second Ring Section
100-1,100-2,100-3,100-4,100-5,100-6A,100-6B,100-6C,100-6D,100-6E,100-7A,100-7B,100-7C,100-7D,100-7E,100-8A,100-8B,100-8C,100-8D,100-8E,100-9,100A‧‧‧轉子 100-1, 100-2, 100-3, 100-4, 100-5, 100-6A, 100-6B, 100-6C, 100-6D, 100-6E, 100-7A, 100-7B, 100-7C, 100-7D, 100-7E, 100-8A, 100-8B, 100-8C, 100-8D, 100-8E, 100-9, 100A‧‧‧rotor
200‧‧‧定子 200‧‧‧ stator
210‧‧‧殼體 210‧‧‧shell
220‧‧‧定子鐵芯 220‧‧‧ Stator iron core
230‧‧‧線圈 230‧‧‧coil
300‧‧‧感應電動機 300‧‧‧ induction motor
AX‧‧‧中心軸 AX‧‧‧Center axis
D1‧‧‧軸線方向 D1‧‧‧ axis direction
D2‧‧‧繞軸線旋轉方向 D2‧‧‧ Rotation around the axis
D3‧‧‧徑方向 D3‧‧‧direction
OD1,OD2‧‧‧外徑尺寸 OD1, OD2 ‧‧‧ Outside diameter dimensions
第1圖係本發明實施形態1的感應電動機的剖面圖。 Fig. 1 is a sectional view of an induction motor according to a first embodiment of the present invention.
第2圖係本發明實施形態1的感應電動機之轉子的剖面圖。 Fig. 2 is a sectional view of a rotor of an induction motor according to the first embodiment of the present invention.
第3圖係沿著第2圖所示之箭頭III-III線之剖視圖。 FIG. 3 is a cross-sectional view taken along the line III-III of the arrow shown in FIG. 2.
第4圖係第2圖所示之端環的立體圖。 Figure 4 is a perspective view of the end ring shown in Figure 2.
第5圖係第2圖所示之補強構件的立體圖。 FIG. 5 is a perspective view of the reinforcing member shown in FIG. 2.
第6圖係相對於本發明實施形態1的感應電動機之轉子之比較例的剖面圖。 Fig. 6 is a sectional view of a comparative example of a rotor of an induction motor according to the first embodiment of the present invention.
第7圖係顯示第6圖所示之比較例之轉子旋轉時端環變形之狀況之圖。 Fig. 7 is a diagram showing the deformation state of the end ring when the rotor of the comparative example shown in Fig. 6 is rotated.
第8圖係顯示本發明實施形態1的感應電動機之轉子旋轉時端環變形之狀況之圖。 Fig. 8 is a diagram showing the deformation of the end ring when the rotor of the induction motor according to the first embodiment of the present invention is rotated.
第9圖係本發明實施形態2的感應電動機之轉子的剖面圖。 Fig. 9 is a sectional view of a rotor of an induction motor according to a second embodiment of the present invention.
第10圖係本發明實施形態3的感應電動機之轉子的剖面圖。 Fig. 10 is a sectional view of a rotor of an induction motor according to a third embodiment of the present invention.
第11圖係本發明實施形態4的感應電動機之轉子的剖面圖。 Fig. 11 is a sectional view of a rotor of an induction motor according to a fourth embodiment of the present invention.
第12圖係本發明實施形態5的感應電動機之轉子的剖面圖。 Fig. 12 is a sectional view of a rotor of an induction motor according to a fifth embodiment of the present invention.
第13圖係顯示第2圖所示之轉子的第一變形例之圖。 Fig. 13 is a diagram showing a first modification of the rotor shown in Fig. 2;
第14圖係顯示第9圖所示之轉子的第一變形例之圖。 FIG. 14 is a diagram showing a first modified example of the rotor shown in FIG. 9.
第15圖係顯示第10圖所示之轉子的第一變形例之圖。 Fig. 15 is a diagram showing a first modification of the rotor shown in Fig. 10;
第16圖係顯示第11圖所示之轉子的第一變形例之圖。 Fig. 16 is a diagram showing a first modification of the rotor shown in Fig. 11;
第17圖係顯示第12圖所示之轉子的第一變形例之圖。 Fig. 17 is a diagram showing a first modification of the rotor shown in Fig. 12;
第18圖係顯示第2圖所示之轉子的第二變形例之圖。 Fig. 18 is a diagram showing a second modification of the rotor shown in Fig. 2;
第19圖係顯示第9圖所示之轉子的第二變形例之圖。 Fig. 19 is a diagram showing a second modification of the rotor shown in Fig. 9.
第20圖係顯示第10圖所示之轉子的第二變形例之圖。 Fig. 20 is a diagram showing a second modification of the rotor shown in Fig. 10.
第21圖係顯示第11圖所示之轉子的第二變形例之圖。 Fig. 21 is a diagram showing a second modification of the rotor shown in Fig. 11.
第22圖係顯示第12圖所示之轉子的第二變形例之圖。 Fig. 22 is a diagram showing a second modification of the rotor shown in Fig. 12;
第23圖係顯示第2圖所示之轉子的第三變形例之圖。 Fig. 23 is a diagram showing a third modification of the rotor shown in Fig. 2;
第24圖係顯示第9圖所示之轉子的第三變形例之圖。 Fig. 24 is a diagram showing a third modification of the rotor shown in Fig. 9;
第25圖係顯示第10圖所示之轉子的第三變形例之圖。 Fig. 25 is a diagram showing a third modification of the rotor shown in Fig. 10;
第26圖係顯示第11圖所示之轉子的第三變形例之圖。 Fig. 26 is a diagram showing a third modification of the rotor shown in Fig. 11;
第27圖係顯示第12圖所示之轉子的第三變形例之圖。 Fig. 27 is a diagram showing a third modification of the rotor shown in Fig. 12;
第28圖係顯示第2圖所示之轉子的第四變形例之圖。 Fig. 28 is a view showing a fourth modification of the rotor shown in Fig. 2.
以下，根據附圖詳細說明本發明之實施形態的感應電動機之轉子及感應電動機。本發明係不受以下實施形態所限定。 Hereinafter, a rotor and an induction motor of an induction motor according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited by the following embodiments.
第1圖係本發明之實施形態1的感應電動機的剖面圖。第2圖係本發明之實施形態1的感應電動機之轉子的剖面圖。第3圖係沿著第2圖所示之箭頭III-III線之剖視 圖。第4圖係第2圖所示之端環的立體圖。第5圖係第2圖所示之補強構件的立體圖。 Fig. 1 is a sectional view of an induction motor according to a first embodiment of the present invention. Fig. 2 is a sectional view of a rotor of an induction motor according to the first embodiment of the present invention. Figure 3 is a cross-section taken along the arrow III-III line shown in Figure 2 Illustration. Figure 4 is a perspective view of the end ring shown in Figure 2. FIG. 5 is a perspective view of the reinforcing member shown in FIG. 2.
第1圖所示之實施形態1的感應電動機300係具備有：定子200、以及設置於定子200之內側的轉子100-1。定子200係具備有：筒狀的殼體210、以及設置於殼體210之內側的定子鐵芯220。定子鐵芯220係以朝轉子鐵芯1之中心軸AX的軸線方向D1積層由未圖示之電磁鋼板母材所沖壓成環狀的複數片薄板之方式構成。複數片薄板係以鉚接、銲接或接著之方式彼此固定。在定子鐵芯220係配置有複數個線圈230。於軸線方向D1的線圈230的一端側的線圈端部係從定子鐵芯220的一端面朝軸線方向D1突出。於軸線方向D1的線圈230的另一端側的線圈端部係從定子鐵芯220的另一端面朝軸線方向D1突出。 An induction motor 300 according to the first embodiment shown in FIG. 1 includes a stator 200 and a rotor 100-1 provided inside the stator 200. The stator 200 includes a cylindrical case 210 and a stator core 220 provided inside the case 210. The stator core 220 is formed by laminating a plurality of thin plates punched into a ring shape from a base material of an electromagnetic steel plate (not shown) in the axial direction D1 of the central axis AX of the rotor core 1. The plurality of thin plates are fixed to each other by riveting, welding or bonding. A plurality of coils 230 are arranged on the stator core 220. The coil end portion on one end side of the coil 230 in the axial direction D1 protrudes from the one end surface of the stator core 220 in the axial direction D1. The coil end portion on the other end side of the coil 230 in the axial direction D1 protrudes from the other end surface of the stator core 220 in the axial direction D1.
如第2圖所示，實施形態1的感應電動機之轉子100-1係具備有：筒狀的轉子鐵芯1、軸桿2、以及環狀的端環3-1，該端環3-1係設置於轉子鐵芯1的中心軸AX之軸線方向D1的一端部1b1。而且，轉子100-1係具備有環狀的端環3-2，該端環3-2係設置於軸線方向D1的另一端部1b2。此外，轉子100-1係具備有環狀的補強構件4-1，該補強構件4-1係設置於軸桿2、和端環3-1的內周部3a之間，且外周部4a與端環3-1的內周部3a接觸。而且，轉子100-1係具備有環狀的補強構件4-2，該補強構件4-2係設置於軸桿2、和端環3-2的內周部3a之間，且外周部4a與端環3-2的內周部3a接觸。以下，會有將端環 3-1及端環3-2稱為端環3-1、3-2的情形，此外會有將補強構件4-1及補強構件4-2稱為補強構件4-1、4-2的情形。 As shown in FIG. 2, the rotor 100-1 of the induction motor according to the first embodiment includes a cylindrical rotor core 1, a shaft 2, and a ring-shaped end ring 3-1. The end ring 3-1 It is provided at one end portion 1b1 in the axial direction D1 of the central axis AX of the rotor core 1. The rotor 100-1 is provided with a ring-shaped end ring 3-2. The end ring 3-2 is provided at the other end portion 1b2 in the axial direction D1. In addition, the rotor 100-1 is provided with a ring-shaped reinforcing member 4-1, which is provided between the shaft 2 and the inner peripheral portion 3a of the end ring 3-1, and the outer peripheral portion 4a and The inner peripheral portion 3a of the end ring 3-1 is in contact. The rotor 100-1 is provided with a ring-shaped reinforcing member 4-2. The reinforcing member 4-2 is provided between the shaft 2 and the inner peripheral portion 3a of the end ring 3-2, and the outer peripheral portion 4a and The inner peripheral portion 3a of the end ring 3-2 is in contact. Below, there will be end rings 3-1 and end ring 3-2 may be referred to as end rings 3-1, 3-2. In addition, reinforcement members 4-1 and 4-2 may be referred to as reinforcement members 4-1, 4-2. situation.
端環3-1、3-2係具備有設置於各端環之內周部3a的環狀的第一突起部3b。補強構件4-1、4-2係在各自的外周部4a具備有環狀的第一溝部4b。第一溝部4b係供第一突起部3b嵌合的形狀。第一溝部4b的外徑係與第一突起部3b的內徑相等。第一溝部4b的軸線方向D1的寬度係與第一突起部3b的軸線方向D1的寬度相等。 The end rings 3-1 and 3-2 are each provided with a ring-shaped first protrusion 3b provided on the inner peripheral portion 3a of each end ring. The reinforcing members 4-1 and 4-2 are each provided with an annular first groove portion 4b on the outer peripheral portion 4a. The first groove portion 4b has a shape in which the first protruding portion 3b is fitted. The outer diameter of the first groove portion 4b is equal to the inner diameter of the first protruding portion 3b. The width in the axial direction D1 of the first groove portion 4b is equal to the width in the axial direction D1 of the first protruding portion 3b.
轉子鐵芯1係以朝軸線方向D1積層由未圖示之電磁鋼板母材所沖壓成環狀的複數片薄板之方式構成。複數片薄板係以壓緊、銲接或接著之方式彼此固定。轉子鐵芯1係具備有複數個鐵芯插槽5、以及導體桿6，該鐵芯插槽5係設置於靠近轉子鐵芯1的外周面之處，且朝繞著中心軸AX軸線旋轉的方向D2排列，而該導體桿6係設置於複數個鐵芯插槽5的各個。複數個鐵芯插槽5的各個係朝軸線方向D1延伸，且從轉子鐵芯1的一端部1b1朝另一端部1b2貫通。 The rotor core 1 is constituted by laminating a plurality of thin plates that are punched into a ring shape from an unillustrated electromagnetic steel plate base material in the axial direction D1. The plurality of thin plates are fixed to each other by pressing, welding or bonding. The rotor core 1 is provided with a plurality of iron core slots 5 and a conductor rod 6. The iron core slots 5 are provided near the outer peripheral surface of the rotor core 1 and rotate toward the central axis AX axis. The direction D2 is arranged, and the conductor rods 6 are arranged in each of the plurality of iron core slots 5. Each of the plurality of iron core slots 5 extends in the axial direction D1 and penetrates from one end portion 1b1 of the rotor core 1 to the other end portion 1b2.
設置於轉子鐵芯1的複數個鐵芯插槽5係各自朝繞軸線旋轉方向D2偏斜(skew)。設置於鐵芯插槽5的導體桿6之軸線方向D1的一端部6a係連接於端環3-1的轉子鐵芯1側的端部3c。設置於鐵芯插槽5的導體桿6之軸線方向D1的另一端部6b係連接於端環3-2的轉子鐵芯1側的端部3c。 The plurality of iron core slots 5 provided in the rotor core 1 are each skewed in the rotation direction D2 about the axis. One end portion 6a of the conductor rod 6 provided in the core slot 5 in the axial direction D1 is connected to the end portion 3c on the rotor core 1 side of the end ring 3-1. The other end portion 6b of the conductor rod 6 provided in the core slot 5 in the axial direction D1 is connected to the end portion 3c on the rotor core 1 side of the end ring 3-2.
就端環3-1、端環3-2及導體桿6的材料而言， 係可例示：鋁、鋁合金、銅或銅合金的導體材料。使用該導體材料並藉由壓鑄而形成端環3-1、3-2。端環3-1、3-2各自之外徑係與轉子鐵芯1的外徑相等。端環3-1的內周部3a係與補強構件4-1的外周部4a接觸。端環3-2的內周部3a係與補強構件4-2的外周部4a接觸。 As for the materials of the end ring 3-1, the end ring 3-2, and the conductor rod 6, Examples are conductor materials of aluminum, aluminum alloy, copper, or copper alloy. This conductor material is used to form end rings 3-1 and 3-2 by die casting. The outer diameter of each of the end rings 3-1 and 3-2 is equal to the outer diameter of the rotor core 1. The inner peripheral portion 3a of the end ring 3-1 is in contact with the outer peripheral portion 4a of the reinforcing member 4-1. The inner peripheral portion 3a of the end ring 3-2 is in contact with the outer peripheral portion 4a of the reinforcing member 4-2.
作用在物體的離心力，不僅取決於物體的半徑及角速度，也取決於物體的質量。補強構件4-1、4-2係為了抑制因離心力及熱膨脹所造成之端環3-1、3-2的變形，必須設成對於離心力難以變形。因此，補強構件4-1、4-2係採用每單位質量的拉伸強度比端環3-1、3-2之材料還高的材料。具體而言，就補強構件4-1、4-2的材料而言可例示鐵、鈦或碳纖維強化塑料。補強構件4-1、4-2之各自係具備有貫通孔4c。軸桿2係貫穿於補強構件4-1、4-2之各自的貫通孔4c、及轉子鐵芯1的貫通孔1a。 The centrifugal force acting on an object depends not only on its radius and angular velocity, but also on its mass. The reinforcing members 4-1 and 4-2 are designed to prevent deformation of the end rings 3-1 and 3-2 due to centrifugal force and thermal expansion, so that it is difficult to deform the centrifugal force. Therefore, the reinforcing members 4-1 and 4-2 are made of a material having a higher tensile strength per unit mass than that of the end rings 3-1 and 3-2. Specific examples of the material of the reinforcing members 4-1 and 4-2 include iron, titanium, and carbon fiber reinforced plastics. Each of the reinforcing members 4-1 and 4-2 is provided with a through hole 4c. The shaft 2 is penetrated through the respective through holes 4c of the reinforcing members 4-1 and 4-2 and the through holes 1a of the rotor core 1.
在轉子100-1的製作時，首先在轉子鐵芯1的一端部1b1安裝補強構件4-1，且在轉子鐵芯1的另一端部1b2安裝補強構件4-2。接著，採用導體材料並藉由壓鑄來形成端環3-1、3-2，從而在第一突起部3b與第一溝部4b嵌合的狀態下，將補強構件4-1、4-2與端環3-1、3-2予以一體成型。此時，將補強構件4-1、4-2與端環3-1、3-2予以一體成型的狀態係指：端環3-1、3-2的第一突起部3b以接觸狀態之方式嵌合至補強構件4-1、4-2的第一溝部4b內。也就是指第一突起部3b嵌合至第一溝部4b內的狀態。接著，補強構件4-1的貫通孔4c、補強構件4-2 的貫通孔4c、以及轉子鐵芯1的貫通孔1a係被修整加工成相同尺寸，且於該等貫通孔4c及貫通孔1a的內側緊密嵌合有軸桿2。在實施形態1中，係於貫通孔4c及貫通孔1a的內側熱嵌軸桿2。 When manufacturing the rotor 100-1, a reinforcing member 4-1 is first attached to one end portion 1b1 of the rotor core 1, and a reinforcing member 4-2 is attached to the other end portion 1b2 of the rotor core 1. Next, the end rings 3-1 and 3-2 are formed by using a conductive material and die-casting, so that the reinforcing members 4-1, 4-2 and the first protruding portion 3b are fitted into the first groove portion 4b. End rings 3-1, 3-2 are integrally molded. At this time, the state in which the reinforcing members 4-1, 4-2 and the end rings 3-1, 3-2 are integrally molded means that the first protrusions 3b of the end rings 3-1, 3-2 are in contact with each other. It fits into the 1st groove part 4b of the reinforcement members 4-1 and 4-2. That is, the state in which the first protruding portion 3b is fitted into the first groove portion 4b. Next, the through hole 4c of the reinforcing member 4-1 and the reinforcing member 4-2 The through-holes 4c and the through-holes 1a of the rotor core 1 are trimmed and processed to the same size, and a shaft 2 is tightly fitted into the through-holes 4c and the through-holes 1a. In the first embodiment, the inside of the through-hole 4c and the through-hole 1a is thermally fitted with the shaft 2.
藉由將補強構件4-1、4-2與端環3-1、3-2予以一體成型，相較於個別地將補強構件4-1、4-2、及端環3-1、3-2安裝至軸桿2的情形，會縮短將補強構件4-1、4-2、及端環3-1、3-2安裝至軸桿2的時間。而且，將補強構件4-1、4-2、及端環3-1、3-2熱嵌至軸桿2，相較於不進行熱嵌的情形，補強構件4-1、4-2所具備之貫通孔4c的內周部與軸桿2的外周部之摩擦力會提升。藉由該摩擦力，抑制在轉子100-1之高速旋轉時及熱膨脹時補強構件4-1、4-2往軸線方向D1的移動。藉此，相較於不進行熱套的情形，由補強構件4-1、4-2所產生之端環3-1、3-2的補強效果會提升。所謂補強效果係指：補強構件4-1、4-2抑制因離心力及熱膨脹所造成之端環3-1、3-2的變形之效果。 By integrally forming the reinforcing members 4-1, 4-2 and the end rings 3-1, 3-2, the reinforcing members 4-1, 4-2, and the end rings 3-1, 3 are integrally formed. When the -2 is mounted on the shaft 2, the time required for mounting the reinforcing members 4-1, 4-2, and the end rings 3-1, 3-2 on the shaft 2 is shortened. Furthermore, the reinforcing members 4-1, 4-2, and the end rings 3-1, 3-2 are thermally embedded in the shaft 2 compared to the case where the thermal members are not thermally embedded. The friction between the inner peripheral portion of the provided through hole 4c and the outer peripheral portion of the shaft 2 is increased. This frictional force suppresses the movement of the reinforcing members 4-1 and 4-2 in the axial direction D1 during high-speed rotation of the rotor 100-1 and during thermal expansion. As a result, the reinforcement effect of the end rings 3-1 and 3-2 produced by the reinforcing members 4-1 and 4-2 will be improved compared to the case where the heat jacket is not performed. The so-called reinforcing effect refers to the effect of the reinforcing members 4-1 and 4-2 in suppressing deformation of the end rings 3-1 and 3-2 due to centrifugal force and thermal expansion.
使用第6圖至第8圖具體地說明轉子100-1的補強效果。第6圖係相對於本發明實施形態1的感應電動機之轉子之比較例的剖面圖。第6圖所示之轉子100A與第2圖所示之轉子100-1的相異點如下。 The reinforcing effect of the rotor 100-1 will be specifically described using FIGS. 6 to 8. Fig. 6 is a sectional view of a comparative example of a rotor of an induction motor according to the first embodiment of the present invention. The differences between the rotor 100A shown in FIG. 6 and the rotor 100-1 shown in FIG. 2 are as follows.
(1)轉子100A係具備有替代第2圖所示之端環3-1、3-2的端環3-1A、3-2A。在端環3-1A、3-2A的內周部3a係未設置有第2圖所示的第一突起部3b。 (1) The rotor 100A is provided with end rings 3-1A and 3-2A instead of the end rings 3-1 and 3-2 shown in FIG. 2. The inner peripheral portion 3a of the end rings 3-1A and 3-2A is not provided with the first protruding portion 3b shown in FIG. 2.
(2)轉子100A係具備有替代第2圖所示之補強構件 4-1、4-2的補強構件4-1A、4-2A。在補強構件4-1A、4-2A的外周部4a係未設置有第2圖所示的第一溝部4b。 (2) The rotor 100A is equipped with a reinforcing member instead of the one shown in Figure 2. 4-1, 4-2 reinforcement members 4-1A, 4-2A. The outer peripheral portion 4a of the reinforcing members 4-1A and 4-2A is not provided with the first groove portion 4b shown in FIG. 2.
補強構件4-1A及補強構件4-2A之各自的外周部4a之外徑係與端環3-1A及端環3-2A之各自的內周部3a之內徑相等。補強構件4-1A及補強構件4-2A之各自的軸線方向D1之寬度係與端環3-1A及端環3-2A之各自的軸線方向D1之寬度相等。 The outer diameters of the outer peripheral portions 4a of the reinforcing members 4-1A and 4-2A are equal to the inner diameters of the inner peripheral portions 3a of the end rings 3-1A and 3-2A. The widths of the respective axial directions D1 of the reinforcing members 4-1A and 4-2A are equal to the widths of the respective axial directions D1 of the end rings 3-1A and 3-2A.
在轉子100A的製作時，首先，在轉子鐵芯1的一端部1b1安裝補強構件4-1A，且在轉子鐵芯1的另一端部1b2安裝補強構件4-2A。接著，採用導體材料並藉由壓鑄來形成端環3-1A、3-2A，從而將端環3-1A與補強構件4-1A予以一體成型，且將端環3-2A與補強構件4-2A予以一體成型。接著，補強構件4-1A的貫通孔4c、補強構件4-2A的貫通孔4c、及轉子鐵芯1的貫通孔1a係被修整加工成相同尺寸，且於該等貫通孔4c及貫通孔1a的內側熱嵌有軸桿2。 When manufacturing the rotor 100A, first, a reinforcing member 4-1A is attached to one end portion 1b1 of the rotor core 1, and a reinforcing member 4-2A is attached to the other end portion 1b2 of the rotor core 1. Next, the end ring 3-1A and 3-2A are formed by using a conductive material and die-casting, so that the end ring 3-1A and the reinforcing member 4-1A are integrally formed, and the end ring 3-2A and the reinforcing member 4- 2A is integrally molded. Next, the through hole 4c of the reinforcing member 4-1A, the through hole 4c of the reinforcing member 4-2A, and the through hole 1a of the rotor core 1 are trimmed and processed to the same size, and these through holes 4c and through holes 1a The inner side of the shaft is thermally embedded with a shaft 2.
第7圖係顯示第6圖所示之比較例之轉子旋轉時端環變形之狀況之圖。第7圖係以實線顯示轉子100A於停止時之端環3-1A的外形，且以虛線顯示轉子100A於高速旋轉時經變形之端環3-1A的外形。 Fig. 7 is a diagram showing the deformation state of the end ring when the rotor of the comparative example shown in Fig. 6 is rotated. FIG. 7 shows the outline of the end ring 3-1A of the rotor 100A when it is stopped by a solid line, and the outline of the deformed end ring 3-1A of the rotor 100A when it is rotating at a high speed by a broken line.
藉由將端環3-1A與補強構件4-1A予以一體成型，補強構件4-1A的外周部4a係與端環3-1A的內周部3a接觸，且於補強構件4-1A的外周部4a與端環3-1A的內周部3a之間產生摩擦力。該摩擦力係發揮抑制於轉子100A 之旋轉時及熱膨脹時端環3-1A產生變形之作用。在此，於轉子100A之高速旋轉時及熱膨脹時，朝徑方向D3之外側擴展之力會作用於端環3-1A。由於端環3-1A係以與導體桿6的連接點作為支點而變形，因此端環3-1A的內周部係抵抗前述的摩擦力而朝軸線方向D1移動，且端環3-1A的外周部係朝徑方向D3移動。 By integrally forming the end ring 3-1A and the reinforcing member 4-1A, the outer peripheral portion 4a of the reinforcing member 4-1A is in contact with the inner peripheral portion 3a of the end ring 3-1A, and the outer periphery of the reinforcing member 4-1A A frictional force is generated between the portion 4a and the inner peripheral portion 3a of the end ring 3-1A. This frictional force is suppressed in the rotor 100A During rotation and thermal expansion, the end ring 3-1A deforms. Here, during high-speed rotation of the rotor 100A and thermal expansion, a force expanding outward in the radial direction D3 will act on the end ring 3-1A. Since the end ring 3-1A is deformed by using the connection point with the conductor rod 6 as a fulcrum, the inner peripheral portion of the end ring 3-1A moves in the axial direction D1 against the aforementioned frictional force, and the end ring 3-1A The outer peripheral portion moves in the radial direction D3.
具體而言，隨著轉子100A的旋轉速度之提升，端環3-1A的變形量會增加，所以相較於轉子100A的旋轉速度較低的情形，在端環3-1A所產生的應力振幅會變大。而且，每當反覆進行轉子100A的旋轉與停止時，或者當轉子100A的旋轉速度變化時，由於對端環3-1A與導體桿6的連接點施加由離心力及熱膨脹所產生的應力，所以於該連接點的金屬疲勞會進展。此外，藉由反覆進行轉子100A的旋轉與停止，端環3-1A的內徑及外徑會反覆地擴大和縮小，因此於端環3-1A的金屬疲勞亦會進展。因此，會有在比設置壽命還短的期間需要更換轉子100A的情形。 Specifically, as the rotation speed of the rotor 100A increases, the amount of deformation of the end ring 3-1A increases, so compared to the case where the rotation speed of the rotor 100A is low, the stress amplitude generated in the end ring 3-1A Will get bigger. Moreover, whenever the rotation and stop of the rotor 100A is repeated, or when the rotation speed of the rotor 100A changes, the stress caused by centrifugal force and thermal expansion is applied to the connection point of the end ring 3-1A and the conductor rod 6, so Metal fatigue at this connection point can progress. In addition, by rotating and stopping the rotor 100A repeatedly, the inner diameter and outer diameter of the end ring 3-1A will be repeatedly enlarged and reduced, so the metal fatigue on the end ring 3-1A will also progress. Therefore, the rotor 100A may need to be replaced during a period shorter than the installation life.
第8圖係顯示本發明實施形態1的感應電動機之轉子旋轉時端環變形的狀況之圖。第8圖係以實現顯示轉子100-1於停止時之端環3-1的外形，且以虛線顯示轉子100-1於高速旋轉時經變形的端環3-1。在轉子100-1中，將第一突起部3b與第一溝部4b予以一體成型，且具有第一突起部3b嵌入至第一溝部4b的嵌合構造。 Fig. 8 is a view showing a state in which an end ring is deformed when a rotor of an induction motor according to Embodiment 1 of the present invention is rotated. FIG. 8 shows the shape of the end ring 3-1 when the rotor 100-1 is stopped, and the dashed end ring 3-1 when the rotor 100-1 rotates at a high speed is shown in dotted lines. In the rotor 100-1, the first protruding portion 3b and the first groove portion 4b are integrally formed, and the first protruding portion 3b is fitted into the first groove portion 4b.
藉由嵌合構造，端環3-1的內周部3a與補強 構件4-1的外周部4a之接觸面積會比第7圖所示的轉子100A變得寬闊，端環3-1的內周部3a與補強構件4-1的外周部4a之間的摩擦力會比第7圖所示的轉子100A提高。 With the fitting structure, the inner peripheral portion 3a of the end ring 3-1 and the reinforcement The contact area of the outer peripheral portion 4a of the member 4-1 becomes wider than that of the rotor 100A shown in FIG. 7, and the frictional force between the inner peripheral portion 3a of the end ring 3-1 and the outer peripheral portion 4a of the reinforcing member 4-1 It is higher than the rotor 100A shown in FIG. 7.
而且，藉由嵌合構造，端環3-1朝軸線方向D1移動時，第一突起部3b會卡止於第一溝部4b。因此，朝向軸線方向D1及徑方向D3之端環3-1的變形量係變得比第7圖所示之轉子100A小。因此，在實施形態1中，相較於第7圖所示之轉子100A，由補強構件4-1、4-2所產生之端環3-1、3-2的補強效果會提升，且降低於端環3-1、3-2所產生之應力振幅，而可謀求端環3-1、3-2之疲勞壽命的提升。 When the end ring 3-1 is moved in the axial direction D1 by the fitting structure, the first protruding portion 3b is locked to the first groove portion 4b. Therefore, the deformation amount of the end ring 3-1 toward the axial direction D1 and the radial direction D3 becomes smaller than that of the rotor 100A shown in FIG. 7. Therefore, in Embodiment 1, compared with the rotor 100A shown in FIG. 7, the reinforcing effect of the end rings 3-1 and 3-2 produced by the reinforcing members 4-1 and 4-2 is improved and reduced. The stress amplitude generated by the end rings 3-1 and 3-2 can improve the fatigue life of the end rings 3-1 and 3-2.
在實施形態1的轉子100-1中，在轉子100-1的高速旋轉時，如專利文獻1所示之習知的轉子，補強構件的外環狀部不會塑性變形，以抑制由端環3-1、3-2所產生之補強效果的降低，且抑制轉子100-1之壽命的降低。 In the rotor 100-1 of Embodiment 1, when the rotor 100-1 rotates at a high speed, as in the conventional rotor shown in Patent Document 1, the outer annular portion of the reinforcing member is not plastically deformed to prevent the end ring from being plastically deformed. The reinforcement effects produced by 3-1 and 3-2 are reduced, and the reduction of the life of the rotor 100-1 is suppressed.
另外，在實施形態1的轉子100-1中，於軸桿2之兩端部中的各端部設置有一個前述嵌合構造，惟嵌合構造亦可在軸桿2的兩端部中的各端部設置兩個以上。此外，在實施形態1的轉子100-1中，雖在軸桿2之兩端部中的各端部設置有嵌合構造，惟當軸桿2的兩端部屬於非對稱之構造時，亦可僅在軸桿2的單側的端部設置嵌合構造。在如此所構成的情形時，至少在該部位中亦可獲得抑制端環3-1或端環3-2之變形的效果。 In addition, in the rotor 100-1 of Embodiment 1, each of the two ends of the shaft 2 is provided with one of the aforementioned fitting structures, but the fitting structure may be provided in both ends of the shaft 2 Each end is provided with two or more. In addition, in the rotor 100-1 of the first embodiment, although the fitting structure is provided at each end portion of both end portions of the shaft 2, the two ends of the shaft 2 also have an asymmetric structure. A fitting structure may be provided only at one end of the shaft 2. In such a case, an effect of suppressing deformation of the end ring 3-1 or the end ring 3-2 can be obtained at least in this portion.
此外，在實施形態1的轉子100-1中，雖環 狀地形成有第一溝部4b及第一突起部3b，惟亦可如下之構成：第一溝部4b係在補強構件4-1、4-2中以朝繞軸線旋轉方向D2排列之複數個凹部之方式構成，而第一突起部3b係在端環3-1、3-2中以朝繞軸線旋轉方向D2排列之複數個突起之方式構成。但是，在環狀地設置第一溝部4b及第一突起部3b的情形時，端環3-1、3-2的變形會在繞軸線旋轉方向D2中均勻地被抑制，所以獲得最提升轉子100-1之壽命的效果。 In the rotor 100-1 of the first embodiment, The first groove portion 4b and the first protruding portion 3b are formed in a shape, but the first groove portion 4b may be a plurality of recesses arranged in the reinforcing members 4-1 and 4-2 in a rotation direction D2 about the axis. The first protruding portion 3b is configured by a plurality of protrusions arranged in the end ring 3-1, 3-2 in the rotation direction D2 about the axis. However, when the first groove portion 4b and the first protruding portion 3b are provided annularly, the deformation of the end rings 3-1, 3-2 is uniformly suppressed in the rotation direction D2 around the axis, so that the rotor with the highest lift is obtained. The effect of 100-1 life.
第9圖係本發明實施形態2的感應電動機之轉子的剖面圖。實施形態1的轉子100-1與實施形態2的轉子100-2之相異點係如下所述。 Fig. 9 is a sectional view of a rotor of an induction motor according to a second embodiment of the present invention. The differences between the rotor 100-1 of the first embodiment and the rotor 100-2 of the second embodiment are as follows.
(1)轉子100-2的端環3-1、3-2之各者係具備有複數個第一突起部3b。端環3-1所具備的複數個第一突起部3b係以朝軸線方向D1彼此分離之方式設置在端環3-1的內周部3a。端環3-2所具備的複數個第一突起部3b係以朝軸線方向D1彼此分離之方式設置在端環3-2的內周部3a。 (1) Each of the end rings 3-1 and 3-2 of the rotor 100-2 is provided with a plurality of first protrusions 3b. The plurality of first protrusions 3b included in the end ring 3-1 are provided on the inner peripheral portion 3a of the end ring 3-1 so as to be separated from each other in the axial direction D1. The plurality of first protruding portions 3b included in the end ring 3-2 are provided on the inner peripheral portion 3a of the end ring 3-2 so as to be separated from each other in the axial direction D1.
(2)轉子100-2的補強構件4-1、4-2之各者係具備有複數個第一溝部4b。補強構件4-1所具備的複數個第一溝部4b係以朝軸線方向D1彼此分離之方式設置在補強構件4-1的外周部4a。補強構件4-2所具備的複數個第一溝部4b係以朝軸線方向D1彼此分離之方式設置在補強構件4-2的外部4a。 (2) Each of the reinforcing members 4-1 and 4-2 of the rotor 100-2 is provided with a plurality of first groove portions 4b. The plurality of first groove portions 4b included in the reinforcing member 4-1 are provided on the outer peripheral portion 4a of the reinforcing member 4-1 so as to be separated from each other in the axial direction D1. The plurality of first groove portions 4b included in the reinforcing member 4-2 are provided on the outside 4a of the reinforcing member 4-2 so as to be separated from each other in the axial direction D1.
採用導體材料並藉由壓鑄來形成端環3-1、3-2。藉此，將端環3-1、3-2與補強構件4-1、4-2予以一體成型。在實施形態2中，具有複數個第一突起部3b嵌入至第一溝部4b的嵌合構造。藉此，端環3-1、3-2的內周部3a與補強構件4-1、4-2的外周部4a之接觸面積係比實施形態1變得更寬闊，且端環3-1、3-2的內周部3a與補強構件4-1、4-2的外周部4a之間的摩擦力係比實施形態1更為提升。因此，朝向軸線方向D1及徑方向D3的端環3-1、3-2之變形量係比實施形態1更小。因此，根據實施形態2，預期更進一步提升端環3-1、3-2的疲勞壽命。 The end rings 3-1, 3-2 are formed by using a conductive material and die-casting. Thereby, the end rings 3-1, 3-2 and the reinforcing members 4-1, 4-2 are integrally molded. The second embodiment has a fitting structure in which a plurality of first protruding portions 3b are fitted into the first groove portion 4b. Thereby, the contact area between the inner peripheral portion 3a of the end rings 3-1 and 3-2 and the outer peripheral portion 4a of the reinforcing members 4-1 and 4-2 becomes wider than that of the first embodiment, and the end ring 3-1 The frictional force between the inner peripheral portion 3a of 3, 3-2 and the outer peripheral portion 4a of the reinforcing members 4-1, 4-2 is higher than that of the first embodiment. Therefore, the amount of deformation of the end rings 3-1 and 3-2 toward the axial direction D1 and the radial direction D3 is smaller than that in the first embodiment. Therefore, according to the second embodiment, the fatigue life of the end rings 3-1 and 3-2 is expected to be further improved.
第10圖係本發明實施形態3的感應電動機之轉子的剖面圖。實施形態1的轉子100-1與實施形態3的轉子100-3之相異點如下所述。 Fig. 10 is a sectional view of a rotor of an induction motor according to a third embodiment of the present invention. The differences between the rotor 100-1 of the first embodiment and the rotor 100-3 of the third embodiment are as follows.
(1)轉子100-3的第一突起部3b係於第一突起部3b的內周部3a1設置有環狀的第二突起部3b1。 (1) The first protruding portion 3b of the rotor 100-3 is connected to the inner peripheral portion 3a1 of the first protruding portion 3b, and the annular second protruding portion 3b1 is provided.
(2)轉子100-3的第一溝部4b係於第一溝部4b的外周部4a1設置有環狀的第二溝部4b1。 (2) The first groove portion 4b of the rotor 100-3 is connected to the outer peripheral portion 4a1 of the first groove portion 4b, and an annular second groove portion 4b1 is provided.
於軸線方向D1之第二突起部3b1的寬度，係比於軸線方向D1之第一突起部3b的寬度更狹窄，而於軸線方向D1之第二溝部4b1的寬度，係比於軸線方向D1之第一溝部4b的寬度更狹窄。 The width of the second protruding portion 3b1 in the axial direction D1 is narrower than the width of the first protruding portion 3b in the axial direction D1, and the width of the second groove portion 4b1 in the axial direction D1 is smaller than that of the axial direction D1. The width of the first groove portion 4b is narrower.
採用導體材料並藉由壓鑄來形成端環3-1、 3-2。藉此，將第一突起部3b與第一溝部4b予以一體成型，且將第二突起部3b1與第二溝部4b1予以一體成型。在實施形態3中，具有：第一突起部3b嵌入至第一溝部4b，並且第二突起部3b1嵌入至第二溝部4b1的構造。藉此，端環3-1、3-2的內周部3a與補強構件4-1、4-2的外周部4a之接觸面積係比實施形態1更寬闊，端環3-1、3-2的內周部3a與補強構件4-1、4-2的外周部4a之間的摩擦力係比實施形態1更為提升。此外，第一突起部3b卡止在第一溝部4b，並且第二突起部3b1卡止在第二溝部4b1。因此，朝向軸線方向D1及徑方向D3的端環3-1、3-2的變形量係比實施形態1變得更小。因此，根據實施形態3，可謀求更進一步提升端環3-1、3-2的疲勞壽命。 Use of conductor material and die-casting to form end rings 3-1, 3-2. Thereby, the first protruding portion 3b and the first groove portion 4b are integrally molded, and the second protruding portion 3b1 and the second groove portion 4b1 are integrally molded. Embodiment 3 has a structure in which the first protruding portion 3b is fitted into the first groove portion 4b, and the second protruding portion 3b1 is fitted into the second groove portion 4b1. Accordingly, the contact area between the inner peripheral portion 3a of the end rings 3-1 and 3-2 and the outer peripheral portion 4a of the reinforcing members 4-1 and 4-2 is wider than that of the first embodiment, and the end rings 3-1 and 3- The frictional force between the inner peripheral portion 3a of 2 and the outer peripheral portion 4a of the reinforcing members 4-1 and 4-2 is more enhanced than in the first embodiment. In addition, the first protruding portion 3b is locked to the first groove portion 4b, and the second protruding portion 3b1 is locked to the second groove portion 4b1. Therefore, the amount of deformation of the end rings 3-1 and 3-2 toward the axial direction D1 and the radial direction D3 becomes smaller than that in the first embodiment. Therefore, according to the third embodiment, the fatigue life of the end rings 3-1 and 3-2 can be further improved.
第11圖係本發明實施形態4的感應電動機之轉子的剖面圖。實施形態1的轉子100-1與實施形態4的轉子100-4之相異點係如下所述。 Fig. 11 is a sectional view of a rotor of an induction motor according to a fourth embodiment of the present invention. The differences between the rotor 100-1 of the first embodiment and the rotor 100-4 of the fourth embodiment are as follows.
(1)轉子100-4的補強構件4-1、4-2之各自的外周部4a中之比第一溝部4b更靠近轉子鐵芯1側的外周部4a2之外徑尺寸O D1，係大於比第一溝部4b更靠近轉子鐵芯1之對面側的外周部4a3的外徑尺寸O D2。外周部4a2的軸線方向D1之寬度係與外周部4a3的軸線方向D1之寬度相等。 (1) The outer diameter portion O D1 of the outer peripheral portion 4a2 of the reinforcing members 4-1 and 4-2 of the rotor 100-4 closer to the rotor core 1 side than the first groove portion 4b is larger than The outer diameter portion O D2 of the outer peripheral portion 4a3 closer to the opposite side of the rotor core 1 than the first groove portion 4b. The width in the axial direction D1 of the outer peripheral portion 4a2 is equal to the width in the axial direction D1 of the outer peripheral portion 4a3.
在轉子100-4中，端環3-1、3-2因熱膨脹而變形，之後藉由端環3-1、3-2熱收縮而欲返回至熱膨脹前 的初期位置。在此，考量於軸線方向D1之端環3-1的熱膨脹及熱收縮。端環3-1係於熱膨脹時朝向軸線方向D1的外側膨脹，於收縮時朝向軸線方向D1的轉子鐵芯1側收縮。此外，考量端環3-1對補強構件4-1賦予之力。端環3-1係於熱膨脹及熱收縮時，亦對被熱嵌之補強構件4-1與軸桿2之間施加應力。 In the rotor 100-4, the end rings 3-1, 3-2 are deformed due to thermal expansion, and then the end rings 3-1, 3-2 are thermally contracted to return to before the thermal expansion. Initial position. Here, the thermal expansion and thermal contraction of the end ring 3-1 in the axial direction D1 are considered. The end ring 3-1 expands toward the outside in the axial direction D1 during thermal expansion, and contracts toward the rotor core 1 side in the axial direction D1 during contraction. In addition, the force exerted by the end ring 3-1 on the reinforcing member 4-1 is considered. The end ring 3-1 is also subject to thermal stress between the thermally embedded reinforcing member 4-1 and the shaft 2 during thermal expansion and contraction.
在藉由設置補強構件4-1之第一溝部4b所形成之軸線方向D1的兩個側壁中之靠近轉子鐵芯1之對面的側壁，施加有端環3-1熱膨脹時之力。在轉子100-4中，由於外徑尺寸O D2較外徑尺寸O D1還小，因此可減小端環3-1熱膨脹而將補強構件4-1朝軸線方向D1之外側推出的應力。另一方面，於熱收縮時，在上述兩個側壁中之靠近轉子鐵芯1的側壁，以在軸線方向D1朝轉子鐵芯1側之方式施予力。由於外徑尺寸O D1係較外徑尺寸O D2還大，所以可增大端環3-1熱收縮而將補強構件4-1朝轉子鐵芯1側拉回的應力。亦即，在端環3-1之熱膨脹時的補強構件4-1施加有：從補強構件4-1被熱嵌在軸桿2時的位置，朝靠近轉子鐵芯1之相反側處位移的應力。另一方面，在端環3-1之熱收縮時的補強構件4-1施加有：從補強構件4-1被熱嵌在軸桿2時的位置，朝靠近轉子鐵芯1處位移的應力。在此，熱膨脹時的力較大，所以當補強構件4-1從上述的位置朝靠近轉子鐵芯1之相反側處位移時，補強構件4-1難以在熱收縮時回到至原來的位置，一體成型的端環3-1亦難以回到原來的形狀。結果，會產生 端環3-1的變形，連帶導致轉子的壽命降低。 Of the two side walls in the axial direction D1 formed by providing the first groove portion 4b of the reinforcing member 4-1, the side wall close to the opposite side of the rotor core 1 is applied with a force when the end ring 3-1 is thermally expanded. In the rotor 100-4, since the outer diameter dimension O D2 is smaller than the outer diameter dimension O D1, it is possible to reduce the stress caused by the thermal expansion of the end ring 3-1 to push the reinforcing member 4-1 outside the axial direction D1. On the other hand, at the time of thermal contraction, a force is applied to the side wall of the rotor core 1 near the rotor core 1 in the axial direction D1 among the two side walls. Since the outer diameter dimension O D1 is larger than the outer diameter dimension O D2, it is possible to increase the stress that the end ring 3-1 thermally contracts and pulls the reinforcing member 4-1 toward the rotor core 1 side. That is, the reinforcing member 4-1 during the thermal expansion of the end ring 3-1 is applied with a displacement from the position when the reinforcing member 4-1 is thermally embedded in the shaft 2 toward the opposite side near the rotor core 1. stress. On the other hand, during the thermal contraction of the end ring 3-1, the reinforcing member 4-1 is subjected to a stress that is displaced from the position when the reinforcing member 4-1 is thermally embedded in the shaft 2 toward the rotor core 1 . Here, the force at the time of thermal expansion is large, so when the reinforcing member 4-1 is displaced from the above position toward the opposite side close to the rotor core 1, it is difficult for the reinforcing member 4-1 to return to the original position during thermal contraction , The integrally formed end ring 3-1 is also difficult to return to the original shape. As a result Deformation of the end ring 3-1 leads to a reduction in the life of the rotor.
在實施形態4的轉子100-4中，於端環3-1之熱收縮時作用在補強構件4-1及軸桿2之間的應力，係比於端環3-1之熱膨脹時作用在補強構件4-1及軸桿2之間的應力還大，所以可抑制補強構件4-1及端環3-1的變形。端環3-2及補強構件4-2亦相同。因此，在轉子100-4中，即使在熱膨脹時於補強構件4-1、4-2之軸線方向D1的位置位移，亦可期待藉由端環3-1，3-2的熱收縮從而將補強構件4-1、4-2拉回至熱膨脹前的初始位置的效果。 In the rotor 100-4 of Embodiment 4, the stress acting between the reinforcing member 4-1 and the shaft 2 during the thermal contraction of the end ring 3-1 is proportional to the stress acting during the thermal expansion of the end ring 3-1. Since the stress between the reinforcing member 4-1 and the shaft 2 is still large, deformation of the reinforcing member 4-1 and the end ring 3-1 can be suppressed. The same applies to the end ring 3-2 and the reinforcing member 4-2. Therefore, in the rotor 100-4, even if the position is displaced in the axial direction D1 of the reinforcing members 4-1, 4-2 during thermal expansion, it is expected that the thermal contraction of the end rings 3-1, 3-2 will reduce the Effect of the reinforcing members 4-1, 4-2 being pulled back to the initial position before thermal expansion.
實施形態4亦可與實施形態1至3中之任一實施形態組合。 The fourth embodiment may be combined with any one of the first to third embodiments.
第12圖係本發明實施形態5的感應電動機之轉子的剖面圖。實施形態1的轉子100-1與實施形態5的轉子100-5之相異點係如下所述。 Fig. 12 is a sectional view of a rotor of an induction motor according to a fifth embodiment of the present invention. The differences between the rotor 100-1 of the first embodiment and the rotor 100-5 of the fifth embodiment are as follows.
(1)轉子100-5的補強構件4-1、4-2之各自的外周部4a中之比第一溝部4b還靠近轉子鐵芯1之相反側的外周部4a3的外徑尺寸O D2，係大於比第一溝部4b還靠近轉子鐵芯1側的外周部4a2的外徑尺寸O D1。外周部4a2的軸線方向D1的寬度係與外周部4a3的軸線方向D1的寬度相等。 (1) The outer diameter portion O D2 of the outer peripheral portion 4a of each of the reinforcing members 4-1 and 4-2 of the rotor 100-5 closer to the rotor core 1 than the first groove portion 4b, It is larger than the outer diameter dimension O D1 of the outer peripheral portion 4a2 closer to the rotor core 1 side than the first groove portion 4b. The width in the axial direction D1 of the outer peripheral portion 4a2 is equal to the width in the axial direction D1 of the outer peripheral portion 4a3.
在轉子100-5中，由於外徑尺寸O D2係比外徑尺寸O D1還大，所以離心力作用在端環3-1、3-2時，或是端環3-1、3-2於熱膨脹時，可抑制端環3-1、3-2往與朝 向轉子鐵芯1之中心之方向相反的方向之變形量。因此，可更進一步提高端環3-1、3-2的補強效果。實施形態5亦可與實施形態1至3中之任一實施形態組合。 In the rotor 100-5, since the outer diameter O D2 is larger than the outer diameter O D1, when the centrifugal force acts on the end rings 3-1, 3-2, or the end rings 3-1, 3-2, During thermal expansion, the end rings 3-1 and 3-2 can be suppressed The amount of deformation in the direction opposite to the center of the rotor core 1. Therefore, the reinforcing effect of the end rings 3-1 and 3-2 can be further improved. The fifth embodiment may be combined with any one of the first to third embodiments.
實施形態6中，說明實施形態1至5的第一變形例。第13圖係顯示第2圖所示之轉子的第一變形例之圖。第2圖所示的轉子100-1與第13圖所示的轉子100-6A之相異點係如下所述。 In the sixth embodiment, a first modification of the first to fifth embodiments will be described. Fig. 13 is a diagram showing a first modification of the rotor shown in Fig. 2; The difference between the rotor 100-1 shown in FIG. 2 and the rotor 100-6A shown in FIG. 13 is as follows.
(1)轉子100-6A的第一溝部4b係於與第一溝部4b的轉子鐵芯1相反側的端部具備有第一傾斜面4d。 (1) The first groove portion 4b of the rotor 100-6A is provided at the end opposite to the rotor core 1 of the first groove portion 4b, and includes a first inclined surface 4d.
(2)轉子100-6A的第一突起部3b係於與第一突起部3b的轉子鐵芯1相反側的端部具備有第二傾斜面3d。第二傾斜面3d係與第一傾斜面4d接觸。 (2) The first protruding portion 3b of the rotor 100-6A is provided at the end opposite to the rotor core 1 of the first protruding portion 3b, and is provided with the second inclined surface 3d. The second inclined surface 3d is in contact with the first inclined surface 4d.
補強構件4-1的第一傾斜面4d，係為在軸線方向D1從補強構件4-2往補強構件4-1擴展的形狀。補強構件4-2的第一傾斜面4d，係為在軸線方向D1從補強構件4-1往補強構件4-2擴展的形狀。端環3-1的第二傾斜面3d,係為在軸線方向D1從端環3-2往端環3-1擴展的形狀。端環3-2的第二傾斜面3d，係為在軸線方向D1從端環3-1往端環3-2擴展的形狀。 The first inclined surface 4d of the reinforcing member 4-1 is a shape that extends from the reinforcing member 4-2 to the reinforcing member 4-1 in the axial direction D1. The first inclined surface 4d of the reinforcing member 4-2 has a shape that extends from the reinforcing member 4-1 to the reinforcing member 4-2 in the axial direction D1. The second inclined surface 3d of the end ring 3-1 is a shape that extends from the end ring 3-2 to the end ring 3-1 in the axial direction D1. The second inclined surface 3d of the end ring 3-2 is a shape extending from the end ring 3-1 to the end ring 3-2 in the axial direction D1.
第14圖係顯示第9圖所示之轉子的第一變形例之圖。第9圖所示的轉子100-2與第14圖所示的轉子100-6B之相異點係如下所述。 FIG. 14 is a diagram showing a first modified example of the rotor shown in FIG. 9. The difference between the rotor 100-2 shown in FIG. 9 and the rotor 100-6B shown in FIG. 14 is as follows.
(1)轉子100-6B之複數個第一溝部4b之各者係於與第一溝部4b的轉子鐵芯1相反側的端部具備有第一傾斜面4d。 (1) Each of the plurality of first groove portions 4b of the rotor 100-6B is provided with a first inclined surface 4d at an end portion on the side opposite to the rotor core 1 of the first groove portion 4b.
(2)轉子100-6B之複數個第一突起部3b之各者係於與第一突起部3b的轉子鐵芯1相反側的端部具備有第二傾斜面3d。第二傾斜面3d係與第一傾斜面4d接觸。 (2) Each of the plurality of first protrusions 3b of the rotor 100-6B is provided with a second inclined surface 3d at an end portion on the side opposite to the rotor core 1 of the first protrusion 3b. The second inclined surface 3d is in contact with the first inclined surface 4d.
第15圖係顯示第10圖所示之轉子的第一變形例之圖。第10圖所示的轉子100-3與第15圖所示的轉子100-6C之相異點係如下所述。 Fig. 15 is a diagram showing a first modification of the rotor shown in Fig. 10; The difference between the rotor 100-3 shown in FIG. 10 and the rotor 100-6C shown in FIG. 15 is as follows.
(1)轉子100-6C之第一溝部4b及第二溝部4b1之各者係於與第一溝部4b及第二溝部4b1的轉子鐵芯1相反側的端部具備有第一傾斜面4d。 (1) Each of the first groove portion 4b and the second groove portion 4b1 of the rotor 100-6C is provided with a first inclined surface 4d at an end portion opposite to the rotor core 1 of the first groove portion 4b and the second groove portion 4b1.
(2)轉子100-6C之第一突起部3b及第二突起部3b1之各者係於與第一突起部3b及第二突起部3b1的轉子鐵芯1相反側的端部具備有第二傾斜面3d。第二傾斜面3d係與第一傾斜面4d接觸。 (2) Each of the first protruding portion 3b and the second protruding portion 3b1 of the rotor 100-6C is provided with a second end portion on the opposite side to the rotor core 1 of the first protruding portion 3b and the second protruding portion 3b1. Inclined surface 3d. The second inclined surface 3d is in contact with the first inclined surface 4d.
第16圖係顯示第11圖所示之轉子的第一變形例之圖。第11圖所示的轉子100-4與第16圖所示的轉子100-6D之相異點係如下所述。 Fig. 16 is a diagram showing a first modification of the rotor shown in Fig. 11; The difference between the rotor 100-4 shown in FIG. 11 and the rotor 100-6D shown in FIG. 16 is as follows.
(1)轉子100-6D的第一溝部4b，係於與第一溝部4b的轉子鐵芯1相反側的端部具備有第一傾斜面4d。 (1) The first groove portion 4b of the rotor 100-6D is provided with a first inclined surface 4d at an end portion opposite to the rotor core 1 of the first groove portion 4b.
(2)轉子100-6D的第一突起部3b，係於與第一突起部3b的轉子鐵芯1相反側的端部具備有第二傾斜面3d。第二傾斜面3d係與第一傾斜面4d接觸。 (2) The first protrusion 3b of the rotor 100-6D is provided with a second inclined surface 3d at an end portion opposite to the rotor core 1 of the first protrusion 3b. The second inclined surface 3d is in contact with the first inclined surface 4d.
第17圖係顯示第12圖所示之轉子的第一變形例之圖。第12圖所示的轉子100-5與第17圖所示的轉子100-6E之相異點係如下所述。 Fig. 17 is a diagram showing a first modification of the rotor shown in Fig. 12; The difference between the rotor 100-5 shown in FIG. 12 and the rotor 100-6E shown in FIG. 17 is as follows.
(1)轉子100-6E的第一溝部4b，係於與第一溝部4b的轉子鐵芯1相反側的端部具備有第一傾斜面4d。 (1) The first groove portion 4b of the rotor 100-6E is provided with a first inclined surface 4d at an end portion opposite to the rotor core 1 of the first groove portion 4b.
(2)轉子100-6E的第一突起部3b，係於與第一突起部3b的轉子鐵芯1相反側的端部具備有第二傾斜面3d。第二傾斜面3d係與第一傾斜面4d接觸。 (2) The first protrusion 3b of the rotor 100-6E is provided with a second inclined surface 3d at an end portion opposite to the rotor core 1 of the first protrusion 3b. The second inclined surface 3d is in contact with the first inclined surface 4d.
由端環3-1、3-2的內周部3a與補強構件4-1、4-2的外周部4a之間的摩擦力所產生之旋轉時的變形抑制效果，係以相對於中心軸AX具有角度的表面的形態為較高。因此，為了提高抑制旋轉時之變形的效果，較佳為擴大相對於中心軸AX具有角度的接觸面積。 The deformation suppression effect during rotation caused by the friction between the inner peripheral portion 3a of the end rings 3-1 and 3-2 and the outer peripheral portion 4a of the reinforcing members 4-1 and 4-2 is relative to the central axis. The morphology of the AX angled surface is higher. Therefore, in order to improve the effect of suppressing deformation during rotation, it is preferable to increase the contact area having an angle with respect to the central axis AX.
根據實施形態6，第一溝部4b係具備有第一傾斜面4d，而第一突起部3b係具備有第二傾斜面3d，藉此在端環3-1、3-2的內周部3a與補強構件4-1、4-2的外周部4a之接觸面積中，具有與中心軸AX呈角度之表面的面積係相較於實施形態1至5寬廣，且端環3-1、3-2的內周部3a與補強構件4-1、4-2的外周部4a之間的摩擦力係相較於實施形態1至5更大。結果，可更進一步提高端環3-1、3-2的補強效果。 According to the sixth embodiment, the first groove portion 4b is provided with the first inclined surface 4d, and the first protruding portion 3b is provided with the second inclined surface 3d, whereby the inner peripheral portions 3a of the end rings 3-1 and 3-2 are provided. Of the contact area with the outer peripheral portion 4a of the reinforcing members 4-1, 4-2, the area having a surface angled from the central axis AX is wider than that of Embodiments 1 to 5, and the end rings 3-1, 3- The frictional force between the inner peripheral portion 3a of 2 and the outer peripheral portion 4a of the reinforcing members 4-1 and 4-2 is larger than that of the first to fifth embodiments. As a result, the reinforcing effect of the end rings 3-1 and 3-2 can be further improved.
在實施形態7中，說明實施形態1至5的第二變形例。 第18圖係顯示第2圖所示之轉子的第二變形例之圖。第2圖所示的轉子100-1與第18圖所示的轉子100-7A之相異點係如下所述。 In the seventh embodiment, a second modification of the first to fifth embodiments will be described. Fig. 18 is a diagram showing a second modification of the rotor shown in Fig. 2; The difference between the rotor 100-1 shown in FIG. 2 and the rotor 100-7A shown in FIG. 18 is as follows.
(1)轉子100-7A的第一溝部4b，係於第一溝部4b的轉子鐵芯1側的端部具備有第一傾斜面4d1。 (1) The first groove portion 4b of the rotor 100-7A includes a first inclined surface 4d1 at an end portion on the rotor core 1 side of the first groove portion 4b.
(2)轉子100-7A的第一突起部3b，係於第一突起部3b的轉子鐵芯1側的端部具備有第二傾斜面3d1。第二傾斜面3d1係與第一傾斜面4d1接觸。 (2) The first protruding portion 3b of the rotor 100-7A includes a second inclined surface 3d1 at an end portion on the rotor core 1 side of the first protruding portion 3b. The second inclined surface 3d1 is in contact with the first inclined surface 4d1.
補強構件4-1的第一傾斜面4d1，係為於軸線方向D1從補強構件4-1往補強構件4-2擴展的形狀。補強構件4-2的第一傾斜面4d1，係為於軸線方向D1從補強構件4-2往補強構件4-1擴展的形狀。端環3-1的第二傾斜面3d1，係為於軸線方向D1從端環3-1往端環3-2擴展的形狀。端環3-2的第二傾斜面3d1，係為於軸線方向D1從端環3-2往端環3-1擴展的形狀。 The first inclined surface 4d1 of the reinforcing member 4-1 is a shape that extends from the reinforcing member 4-1 to the reinforcing member 4-2 in the axial direction D1. The first inclined surface 4d1 of the reinforcing member 4-2 is a shape that extends from the reinforcing member 4-2 to the reinforcing member 4-1 in the axial direction D1. The second inclined surface 3d1 of the end ring 3-1 is a shape extending from the end ring 3-1 to the end ring 3-2 in the axial direction D1. The second inclined surface 3d1 of the end ring 3-2 is a shape extending from the end ring 3-2 to the end ring 3-1 in the axial direction D1.
第19圖係顯示第9圖所示之轉子的第二變形例之圖。第9圖所示的轉子100-2與第19圖所示的轉子100-7B之相異點係如下所述。 Fig. 19 is a diagram showing a second modification of the rotor shown in Fig. 9. The difference between the rotor 100-2 shown in FIG. 9 and the rotor 100-7B shown in FIG. 19 is as follows.
(1)轉子100-7B之複數個第一溝部4b之各者係於第一溝部4b的轉子鐵芯1側的端部具備有第一傾斜面4d1。 (1) Each of the plurality of first groove portions 4b of the rotor 100-7B is attached to the end of the rotor core 1 side of the first groove portion 4b and includes a first inclined surface 4d1.
(2)轉子100-7B之複數個第一突起部3b之各者係於第一突起部3b的轉子鐵芯1側的端部具備有第二傾斜面3d1。第二傾斜面3d1係與第一傾斜面4d1接觸。 (2) Each of the plurality of first protrusions 3b of the rotor 100-7B is attached to the end of the rotor core 1 side of the first protrusion 3b and includes a second inclined surface 3d1. The second inclined surface 3d1 is in contact with the first inclined surface 4d1.
第20圖係顯示第10圖所示之轉子的第二變 形例之圖。第10圖所示的轉子100-3與第20圖所示的轉子100-7C之相異點係如下所述。 Figure 20 shows the second variation of the rotor shown in Figure 10. Illustration of examples. The difference between the rotor 100-3 shown in FIG. 10 and the rotor 100-7C shown in FIG. 20 is as follows.
(1)轉子100-7C之第一溝部4b及第二溝部4b1之各者係於第一溝部4b及第二溝部4b1之各自的轉子鐵芯1側的端部具備有第一傾斜面4d1。 (1) Each of the first groove portion 4b and the second groove portion 4b1 of the rotor 100-7C is connected to the rotor core 1 side end of each of the first groove portion 4b and the second groove portion 4b1, and the first inclined surface 4d1 is provided.
(2)轉子100-7C之第一突起部3b及第二突起部3b1之各者係於第一突起部3b及第二突起部3b1之各自的轉子鐵芯1側的端部具備有第二傾斜面3d1。第二傾斜面3d1係與第一傾斜面4d1接觸。 (2) Each of the first protruding portion 3b and the second protruding portion 3b1 of the rotor 100-7C is attached to the end portion on the rotor core 1 side of each of the first protruding portion 3b and the second protruding portion 3b1. Inclined surface 3d1. The second inclined surface 3d1 is in contact with the first inclined surface 4d1.
第21圖係顯示第11圖所示之轉子的第二變形例之圖。第11圖所示的轉子100-4與第21圖所示的轉子100-7D之相異點係如下所述。 Fig. 21 is a diagram showing a second modification of the rotor shown in Fig. 11. The difference between the rotor 100-4 shown in FIG. 11 and the rotor 100-7D shown in FIG. 21 is as follows.
(1)轉子100-7D的第一溝部4b係於第一溝部4b的轉子鐵芯1側的端部具備有第一傾斜面4d1。 (1) The first groove portion 4b of the rotor 100-7D is connected to the rotor core 1 side end portion of the first groove portion 4b and includes a first inclined surface 4d1.
(2)轉子100-7D的第一突起部3b係於第一突起部3b的轉子鐵芯1側的端部具備有第二傾斜面3d1。第二傾斜面3d1係與第一傾斜面4d1接觸。 (2) The first protruding portion 3b of the rotor 100-7D is attached to the end of the rotor core 1 side of the first protruding portion 3b and includes a second inclined surface 3d1. The second inclined surface 3d1 is in contact with the first inclined surface 4d1.
第22圖係顯示第12圖所示之轉子的第二變形例之圖。第12圖所示的轉子100-5與第22圖所示的轉子100-7E之相異點係如下所述。 Fig. 22 is a diagram showing a second modification of the rotor shown in Fig. 12; The difference between the rotor 100-5 shown in FIG. 12 and the rotor 100-7E shown in FIG. 22 is as follows.
(1)轉子100-7E的第一溝部4b係於第一溝部4b的轉子鐵芯1側的端部具備有第一傾斜面4d1。 (1) The first groove portion 4b of the rotor 100-7E is connected to the rotor core 1 side end of the first groove portion 4b and includes a first inclined surface 4d1.
(2)轉子100-7E的第一突起部3b係於第一突起部3b的轉子鐵芯1側的端部具備有第二傾斜面3d1。第二傾斜 面3d1係與第一傾斜面4d1接觸。 (2) The first protrusion 3b of the rotor 100-7E is attached to the end of the rotor core 1 side of the first protrusion 3b and includes a second inclined surface 3d1. Second tilt The surface 3d1 is in contact with the first inclined surface 4d1.
根據實施形態7，第一溝部4b係具備有第一傾斜面4d1，且第一突起部3b係具備有第二傾斜面3d1，藉此端環3-1、3-2的內周部3a與補強構件4-1、4-2的外周部4a之接觸面積係相較於實施形態1至5更寬廣，且端環3-1、3-2的內周部3a與補強構件4-1、4-2的外周部4a之間的摩擦力係相較於實施形態1至5更大。結果，可更進一步提高端環3-1、3-2的補強效果。 According to the seventh embodiment, the first groove portion 4b is provided with the first inclined surface 4d1, and the first protruding portion 3b is provided with the second inclined surface 3d1, whereby the inner peripheral portions 3a of the end rings 3-1, 3-2 and The contact areas of the outer peripheral portions 4a of the reinforcing members 4-1 and 4-2 are wider than those of Embodiments 1 to 5, and the inner peripheral portions 3a of the end rings 3-1 and 3-2 and the reinforcing members 4-1 and 4 The frictional force between the outer peripheral portions 4a of 4-2 is larger than that of the first to fifth embodiments. As a result, the reinforcing effect of the end rings 3-1 and 3-2 can be further improved.
在實施形態8中，說明實施形態1至5的第三變形例。第23圖係顯示第2圖所示之轉子的第三變形例之圖。第23圖所示的轉子100-8A的第一溝部4b係具備有：實施形態6的第一傾斜面4d與實施形態7的第一傾斜面4d1。此外，轉子100-8A的第一突起部3b係具備有：實施形態6的第二傾斜面3d與實施形態7的第二傾斜面3d1。 In the eighth embodiment, a third modification of the first to fifth embodiments will be described. Fig. 23 is a diagram showing a third modification of the rotor shown in Fig. 2; The first groove portion 4b of the rotor 100-8A shown in FIG. 23 is provided with a first inclined surface 4d of the sixth embodiment and a first inclined surface 4d1 of the seventh embodiment. The first protruding portion 3b of the rotor 100-8A is provided with a second inclined surface 3d of the sixth embodiment and a second inclined surface 3d1 of the seventh embodiment.
第24圖係顯示第9圖所示之轉子的第三變形例之圖。第24圖所示的轉子100-8B之複數個第一溝部4b之各者係具備有：實施形態6的第一傾斜面4d與實施形態7的第一傾斜面4d1。此外，轉子100-8B的複數個第一突起部3b之各者係具備有：實施形態6的第二傾斜面3d與實施形態7的第二傾斜面3d1。 Fig. 24 is a diagram showing a third modification of the rotor shown in Fig. 9; Each of the plurality of first groove portions 4b of the rotor 100-8B shown in FIG. 24 includes a first inclined surface 4d of the sixth embodiment and a first inclined surface 4d1 of the seventh embodiment. Each of the plurality of first protrusions 3b of the rotor 100-8B includes a second inclined surface 3d according to the sixth embodiment and a second inclined surface 3d1 according to the seventh embodiment.
第25圖係顯示第10圖所示之轉子的第三變形例之圖。第25圖所示的轉子100-8C的第一溝部4b及第 二溝部4b1之各者係具備有：實施形態6的第一傾斜面4d與實施形態7的第一傾斜面4d1。此外，轉子100-8C的第一突起部3b及第二突起部3b1各自係具備有：實施形態6的第二傾斜面3d與實施形態7的第二傾斜面3d1。 Fig. 25 is a diagram showing a third modification of the rotor shown in Fig. 10; The first groove portion 4b and the first groove portion of the rotor 100-8C shown in FIG. 25 Each of the two groove portions 4b1 includes a first inclined surface 4d according to the sixth embodiment and a first inclined surface 4d1 according to the seventh embodiment. In addition, each of the first protruding portion 3b and the second protruding portion 3b1 of the rotor 100-8C includes a second inclined surface 3d of the sixth embodiment and a second inclined surface 3d1 of the seventh embodiment.
第26圖係顯示第11圖所示之轉子的第三變形例之圖。第26圖所示的轉子100-8D的第一溝部4b係具備有：實施形態6的第一傾斜面4d與實施形態7的第一傾斜面4d1。此外，轉子100-8D的第一突起部3b係具備有：實施形態6的第二傾斜面3d與實施形態7的第二傾斜面3d1。 Fig. 26 is a diagram showing a third modification of the rotor shown in Fig. 11; The first groove portion 4b of the rotor 100-8D shown in FIG. 26 is provided with a first inclined surface 4d of the sixth embodiment and a first inclined surface 4d1 of the seventh embodiment. The first protruding portion 3b of the rotor 100-8D is provided with a second inclined surface 3d of the sixth embodiment and a second inclined surface 3d1 of the seventh embodiment.
第27圖係顯示第12圖所示之轉子的第三變形例之圖。第27圖所示的轉子100-8E的第一溝部4b係具備有：實施形態6的第一傾斜面4d與實施形態7的第一傾斜面4d1。此外，轉子100-8E的第一突起部3b係具備有：實施形態6的第二傾斜面3d與實施形態7的第二傾斜面3d1。 Fig. 27 is a diagram showing a third modification of the rotor shown in Fig. 12; The first groove portion 4b of the rotor 100-8E shown in FIG. 27 includes a first inclined surface 4d of the sixth embodiment and a first inclined surface 4d1 of the seventh embodiment. The first protruding portion 3b of the rotor 100-8E includes a second inclined surface 3d of the sixth embodiment and a second inclined surface 3d1 of the seventh embodiment.
根據實施形態8，第一溝部4b係具備有第一傾斜面4d及第一傾斜面4d1，且第一突起部3b係具備有第二傾斜面3d及第二傾斜面3d1，藉此端環3-1、3-2的內周部3a與補強構件4-1、4-2的外周部4a之接觸面積係相較於實施形態1至5更寬廣，且端環3-1、3-2的內周部3a與補強構件4-1、4-2的外周部4a之間的摩擦力係相較於實施形態1至5更大。結果，可更進一步提高端環3-1、3-2的補強效果。 According to the eighth embodiment, the first groove portion 4b includes the first inclined surface 4d and the first inclined surface 4d1, and the first protruding portion 3b includes the second inclined surface 3d and the second inclined surface 3d1. The contact area of the inner peripheral portion 3a of -1, 3-2 and the outer peripheral portion 4a of the reinforcing members 4-1, 4-2 is wider than that of Embodiments 1 to 5, and the end rings 3-1, 3-2 The frictional force between the inner peripheral portion 3a and the outer peripheral portion 4a of the reinforcing members 4-1 and 4-2 is larger than that of the first to fifth embodiments. As a result, the reinforcing effect of the end rings 3-1 and 3-2 can be further improved.
實施形態1至實施形態8中，於補強構件形成有溝部，惟補強構件亦可如以下之方式構成。第28圖係顯示第2圖所示之轉子的第四變形例之圖。第28圖所示的轉子100-9係具備有：取代補強構件4-1、4-2的補強構件4-1B、4-2B，取代端環3-1、3-2的端環3-1B、3-2B。 Although the grooves are formed in the reinforcing member in the first to eighth embodiments, the reinforcing member may be configured as follows. Fig. 28 is a view showing a fourth modification of the rotor shown in Fig. 2. The rotor 100-9 shown in FIG. 28 is provided with the reinforcing members 4-1B and 4-2B instead of the reinforcing members 4-1 and 4-2, and the end rings 3- instead of the end rings 3-1 and 3-2. 1B, 3-2B.
補強構件4-1B係具備有：設置於靠近補強構件4-1B的轉子鐵芯1之相反側處的第一環狀部41、以及設置於靠近補強構件4-1B的轉子鐵芯1的第二環狀部42。第二環狀部42的外徑係小於第一環狀部41的外徑。因此，於第一環狀部41及第二環狀部42之間形成有段差部。補強構件4-2B係與補強構件4-1B相同之方式構成。 The reinforcing member 4-1B includes a first annular portion 41 provided on the opposite side of the rotor core 1 near the reinforcing member 4-1B, and a first ring portion 41 provided on the rotor core 1 near the reinforcing member 4-1B.二环 部 42。 Two ring portions 42. The outer diameter of the second annular portion 42 is smaller than the outer diameter of the first annular portion 41. Therefore, a stepped portion is formed between the first annular portion 41 and the second annular portion 42. The reinforcing member 4-2B is configured in the same manner as the reinforcing member 4-1B.
藉由壓鑄所形成之端環3-1B的內周部3a係與第一環狀部41及第二環狀部42之各自的外周部4a接觸。此時，第一突起部3b之與轉子鐵芯1為相反側的端部3e係與第一環狀部41的轉子鐵芯1側的端部4e接觸，亦即與第一環狀部41及第二環狀部42之間的段差部接觸。亦即，第一突起部3b係嵌入至段差部。因此，在旋轉時的端環3-1B中，由於第一突起部3b卡止在該段差部，故可獲得抑制旋轉時之端環3-1B的變形之效果。旋轉時的端環3-2B，亦可獲得同樣的效果。 The inner peripheral portion 3 a of the end ring 3-1B formed by die casting is in contact with the outer peripheral portion 4 a of each of the first annular portion 41 and the second annular portion 42. At this time, the end portion 3e on the opposite side of the rotor core 1 from the first protruding portion 3b is in contact with the end portion 4e on the rotor core 1 side of the first annular portion 41, that is, the first annular portion 41 And a stepped portion between the second annular portion 42. That is, the first protruding portion 3b is fitted into the stepped portion. Therefore, in the end ring 3-1B during rotation, the first protruding portion 3b is locked at the stepped portion, so that the effect of suppressing deformation of the end ring 3-1B during rotation can be obtained. The same effect can be obtained with the end ring 3-2B during rotation.
另外，當第二環狀部42的外徑比第一環狀部41的外徑還大時，相較於第7圖所示之比較例雖可獲得增加接觸面積的效果，但由於旋轉時之端環3-1B的第一突起部3b不會卡止在上述的段差部，而無法充分地獲得抑制旋 轉時之變形的效果。 In addition, when the outer diameter of the second annular portion 42 is larger than the outer diameter of the first annular portion 41, compared with the comparative example shown in FIG. 7, although the effect of increasing the contact area can be obtained, The first protruding portion 3b of the end ring 3-1B will not be locked in the above-mentioned stepped portion, and the restraint rotation cannot be sufficiently obtained. The effect of deformation when turning.
以上之實施形態所示的構成，係顯示本發明之內容的一範例者，亦可與其他習知技術結合，或在不脫離本發明之要旨的範圍內亦可省略、變更構成的一部分。 The structure shown in the above embodiment is an example showing the content of the present invention, and it may be combined with other conventional technologies, or a part of the structure may be omitted or changed without departing from the gist of the present invention.
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ??PCT/JP2016/074556 | 2016-08-23 | ||
| PCT/JP2016/074556 WO2018037486A1 (en) | 2016-08-23 | 2016-08-23 | Induction-motor rotor and induction motor |
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| Publication Number | Publication Date |
|---|---|
| TW201807928A TW201807928A (en) | 2018-03-01 |
| TWI637582B true TWI637582B (en) | 2018-10-01 |
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| TW106123044A TWI637582B (en) | 2016-08-23 | 2017-07-10 | Rotor of induction motor and induction motor |
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| JP (1) | JP6165385B1 (en) |
| KR (1) | KR20180044836A (en) |
| CN (1) | CN107980197B (en) |
| DE (1) | DE112016007177T5 (en) |
| TW (1) | TWI637582B (en) |
| WO (1) | WO2018037486A1 (en) |
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| FR3086121B1 (en) | 2018-09-19 | 2020-10-16 | Ge Energy Power Conversion Technology Ltd | ROTOR FOR ASYNCHRONOUS ELECTRIC MACHINE WITH NON-THROUGH SHAFT |
| DE102022202525A1 (en) | 2022-03-15 | 2023-09-21 | Zf Friedrichshafen Ag | Rotor for an electric machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55127869A (en) * | 1979-03-22 | 1980-10-03 | Mitsubishi Electric Corp | Rotor of rotating electric machine |
| JPH03289338A (en) * | 1990-04-03 | 1991-12-19 | Fuji Electric Co Ltd | Rotor for electric rotating machine |
| TW296503B (en) * | 1995-06-15 | 1997-01-21 | Toshiba Co Ltd | |
| WO2015188985A1 (en) * | 2014-06-11 | 2015-12-17 | Robert Bosch Gmbh | Electrical asynchronous machine with an internal stabilizing ring for the short-circuiting ring |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5935554A (en) * | 1982-08-18 | 1984-02-27 | Toshiba Corp | Squirrel-cage type induction motor |
| JPH0777504B2 (en) * | 1987-11-17 | 1995-08-16 | ファナック株式会社 | High speed induction motor rotor structure |
| JP5969525B2 (en) | 2014-02-25 | 2016-08-17 | ファナック株式会社 | Rotor including end-to-end ring and electric motor |
| US9935533B2 (en) * | 2014-03-31 | 2018-04-03 | Mitsubishi Electric Corporation | Squirrel-cage motor rotor and squirrel-cage motor |
| CN204304648U (en) * | 2014-12-18 | 2015-04-29 | 重庆赛力盟电机有限责任公司 | Medium-sized asynchronous machine rotor ring pressing construction |
-
2016
- 2016-08-23 JP JP2017512400A patent/JP6165385B1/en active Active
- 2016-08-23 CN CN201680010534.XA patent/CN107980197B/en active Active
- 2016-08-23 KR KR1020177022066A patent/KR20180044836A/en not_active Application Discontinuation
- 2016-08-23 DE DE112016007177.9T patent/DE112016007177T5/en active Pending
- 2016-08-23 WO PCT/JP2016/074556 patent/WO2018037486A1/en active Application Filing
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55127869A (en) * | 1979-03-22 | 1980-10-03 | Mitsubishi Electric Corp | Rotor of rotating electric machine |
| JPH03289338A (en) * | 1990-04-03 | 1991-12-19 | Fuji Electric Co Ltd | Rotor for electric rotating machine |
| TW296503B (en) * | 1995-06-15 | 1997-01-21 | Toshiba Co Ltd | |
| WO2015188985A1 (en) * | 2014-06-11 | 2015-12-17 | Robert Bosch Gmbh | Electrical asynchronous machine with an internal stabilizing ring for the short-circuiting ring |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2018037486A1 (en) | 2018-08-23 |
| CN107980197B (en) | 2020-01-10 |
| CN107980197A (en) | 2018-05-01 |
| TW201807928A (en) | 2018-03-01 |
| KR20180044836A (en) | 2018-05-03 |
| DE112016007177T5 (en) | 2019-07-04 |
| JP6165385B1 (en) | 2017-07-19 |
| WO2018037486A1 (en) | 2018-03-01 |
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