TWI609559B - Electric motor - Google Patents
Electric motor Download PDFInfo
- Publication number
- TWI609559B TWI609559B TW105108071A TW105108071A TWI609559B TW I609559 B TWI609559 B TW I609559B TW 105108071 A TW105108071 A TW 105108071A TW 105108071 A TW105108071 A TW 105108071A TW I609559 B TWI609559 B TW I609559B
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- stator core
- outer casing
- lid body
- cover body
- outer diameter
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/187—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to inner stators
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- 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
- H02K15/024—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/30—Windings characterised by the insulating material
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/38—Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/42—Means for preventing or reducing eddy-current losses in the winding heads, e.g. by shielding
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/02—Casings or enclosures characterised by the material thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/08—Insulating casings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
- H02K9/223—Heat bridges
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Frames (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Motor Or Generator Cooling System (AREA)
Description
本發明係關於具備有定子及配置於定子的內側之轉子之電動機。 The present invention relates to an electric motor including a stator and a rotor disposed inside the stator.
近年來，為了因應機械加工節奏(tact)之縮短，對於工業用途的電動機之高輸出化及高轉矩(torque)化的要求變高。隨著電動機之高輸出化及高轉矩化，配置於定子之線圈(coil)的發熱量變大。因此必須將線圈產生的熱有效率地排出到電動機的外部。 In recent years, in order to shorten the tact of the machining process, the demand for high output and high torque of the motor for industrial use has become high. As the motor is increased in output and torque is increased, the amount of heat generated in the coil of the stator is increased. Therefore, the heat generated by the coil must be efficiently discharged to the outside of the motor.
專利文獻1中揭示一種將線圈產生的熱很有效率地排出到外部之電動機的構造。專利文獻1中揭示的電動機的定子係具備有：環狀的定子鐵芯、在定子鐵芯的周方向相分離而配置之複數個線圈、包圍各線圈的線圈端部(coil end)之筒狀的蓋體(cover)、充填於線圈端部與蓋體之間之熱傳導性樹脂、以及配置於定子鐵芯及蓋體的外周側之外殼(housing)。專利文獻1的蓋體其外周面的一部分區域的外徑係與定子鐵芯的外徑相同尺寸。 Patent Document 1 discloses a configuration in which a heat generated by a coil is efficiently discharged to an external motor. The stator of the electric motor disclosed in Patent Document 1 includes an annular stator core, a plurality of coils that are arranged to be separated in the circumferential direction of the stator core, and a cylindrical end that surrounds the coil ends of the coils. A cover, a heat conductive resin filled between the coil end portion and the lid, and a housing disposed on the outer circumference side of the stator core and the lid. In the lid body of Patent Document 1, the outer diameter of a part of the outer peripheral surface thereof is the same as the outer diameter of the stator core.
(專利文獻1)日本特許第5607708號公報 (Patent Document 1) Japanese Patent No. 5607708
以膨脹配合(expansion fit)將外殼套嵌至定子鐵芯的外周(亦即將定子鐵芯嵌入外殼)時，從外殼傳遞至蓋體之熱會使得蓋體膨脹。但是專利文獻1的蓋體其外周面的一部分區域的外徑係與定子鐵芯的外徑相同尺寸。因此專利文獻1會有：因為從外殼傳遞來的熱而膨脹之蓋體的外周面會與外殼的內周面相接觸，使得外殼在套嵌途中卡在不預期的位置之可能性。因此，專利文獻1的定子有：將外殼套嵌至定子鐵芯的外周之作業性降低這樣的課題。 When the outer casing of the stator core is embedded in the expansion fit (i.e., the stator core is embedded in the outer casing), the heat transferred from the outer casing to the cover expands the cover. However, the outer diameter of a part of the outer peripheral surface of the lid body of Patent Document 1 is the same as the outer diameter of the stator core. Therefore, Patent Document 1 has a possibility that the outer peripheral surface of the cover which is expanded by the heat transmitted from the outer casing comes into contact with the inner peripheral surface of the outer casing, so that the outer casing is caught in an unintended position during the nesting. Therefore, the stator of Patent Document 1 has a problem that the workability of the outer casing of the stator core is reduced.
本發明係有鑑於上述課題而完成者，其目的在得到不僅可將線圈端部產生的熱很有效率地排出到外部，而且可提高外殼的套嵌作業性之電動機。 The present invention has been made in view of the above-described problems, and an object thereof is to provide an electric motor that can efficiently discharge not only heat generated at a coil end portion to the outside but also improve the fitting workability of the outer casing.
為了解決上述的課題，達成本發明的目的，本發明之電動機係具備有：環狀的定子鐵芯、配置於定子鐵芯的內側之轉子、以及排列配置於定子鐵芯的周方向之複數個線圈(coil)。本發明之電動機也具備有：配置於定子鐵芯的軸方向的端面且包圍從定子鐵芯的軸方向的端面突出之複數個線圈的線圈端部(coil end)之筒狀的蓋體(cover)。本發明之電動機還具備有：配置於複數個線圈的 各個線圈端部與蓋體之間之熱傳導性樹脂部、以及配置於蓋體的徑向外側且配置於定子鐵芯的徑向外側之筒狀的外殼(housing)。蓋體的外徑係比定子鐵芯的外徑小且比外殼的內徑小，蓋體的外周面與外殼的內周面不接觸。 In order to achieve the object of the present invention, the motor of the present invention includes a ring-shaped stator core, a rotor disposed inside the stator core, and a plurality of circumferentially arranged stator cores. Coil. The motor of the present invention is also provided with a cylindrical cover body (cover) that is disposed at an end surface of the stator core in the axial direction and that surrounds a coil end of a plurality of coils that protrude from the end surface of the stator core in the axial direction (cover) ). The motor of the present invention is further provided with: a plurality of coils A thermally conductive resin portion between each of the coil end portions and the lid body, and a cylindrical casing disposed on a radially outer side of the lid body and disposed on a radially outer side of the stator core. The outer diameter of the cover is smaller than the outer diameter of the stator core and smaller than the inner diameter of the outer casing, and the outer circumferential surface of the cover does not contact the inner circumferential surface of the outer casing.
本發明之電動機會產生不僅可將線圈端部產生的熱很有效率地排出到外部，而且可提高外殼的套嵌作業性之效果。 The motor of the present invention produces an effect that not only the heat generated at the end of the coil can be efficiently discharged to the outside, but also the workability of the casing can be improved.
1、1-1、1-2‧‧‧定子鐵芯 1, 1-1, 1-2‧‧‧ stator core
1a‧‧‧一端面 1a‧‧‧One end
1b‧‧‧另一端面 1b‧‧‧Other end face
1c‧‧‧一端部 1c‧‧‧ one end
2‧‧‧線圈 2‧‧‧ coil
2a、2b‧‧‧線圈端部 2a, 2b‧‧‧ coil ends
3a、3a-1、3a-2、3a-3、3b‧‧‧蓋體 3a, 3a-1, 3a-2, 3a-3, 3b‧‧‧ cover
4、4a、4b‧‧‧模塑樹脂部 4, 4a, 4b‧‧‧ molding resin department
5‧‧‧轉子鐵芯 5‧‧‧Rotor core
6‧‧‧鋁導體 6‧‧‧Aluminum conductor
10‧‧‧外殼 10‧‧‧ Shell
11‧‧‧中空孔 11‧‧‧ hollow hole
12‧‧‧槽 12‧‧‧ slot
20‧‧‧引線 20‧‧‧ lead
31‧‧‧第一端部 31‧‧‧ first end
32‧‧‧第二端部 32‧‧‧second end
41‧‧‧一端部 41‧‧‧One end
50‧‧‧溝部 50‧‧‧Ditch
100‧‧‧定子 100‧‧‧ Stator
200‧‧‧轉子 200‧‧‧Rotor
300、300-1、300-2‧‧‧電動機 300, 300-1, 300-2‧‧‧ motor
D1、D2‧‧‧外徑 D1, D2‧‧‧ OD
D3‧‧‧內徑 D3‧‧‧Inner diameter
G‧‧‧間隙 G‧‧‧ gap
第1圖係本發明的實施形態1之電動機的縱斷面圖。 Fig. 1 is a longitudinal sectional view showing a motor according to a first embodiment of the present invention.
第2圖係本發明的實施形態1之電動機的定子的縱斷面圖。 Fig. 2 is a longitudinal sectional view showing a stator of the electric motor according to the first embodiment of the present invention.
第3圖係第2圖所示的III-III箭號方向的斷面圖。 Fig. 3 is a cross-sectional view taken along line III-III of the arrow shown in Fig. 2.
第4圖係第2圖所示的IV-IV箭號方向的斷面圖。 Fig. 4 is a cross-sectional view taken along line IV-IV of Fig. 2;
第5圖係第2圖所示的定子的一端側的放大圖。 Fig. 5 is an enlarged view of one end side of the stator shown in Fig. 2.
第6圖係顯示第5圖所示的間隙與線圈端部的溫度的關係之圖。 Fig. 6 is a view showing the relationship between the gap shown in Fig. 5 and the temperature of the coil end portion.
第7圖係本發明的實施形態2之電動機的定子的斷面圖。 Fig. 7 is a cross-sectional view showing the stator of the electric motor according to the second embodiment of the present invention.
第8圖係本發明的實施形態3之電動機的定子的斷面圖。 Fig. 8 is a cross-sectional view showing the stator of the electric motor according to the third embodiment of the present invention.
第9圖係顯示與本發明的實施形態1至3有關的定子的第一變形例之斷面圖。 Fig. 9 is a cross-sectional view showing a first modification of the stator according to the first to third embodiments of the present invention.
第10圖係顯示與本發明的實施形態1至3有關的定子的第二變形例之斷面圖。 Fig. 10 is a cross-sectional view showing a second modification of the stator according to the first to third embodiments of the present invention.
以下，根據圖式來詳細說明本發明的實施形態之電動機。惟本發明並不受此實施形態所限定。 Hereinafter, an electric motor according to an embodiment of the present invention will be described in detail based on the drawings. However, the invention is not limited by the embodiment.
第1圖係本發明的實施形態1之電動機的縱斷面圖。第2圖係本發明的實施形態1之電動機的定子的縱斷面圖。第3圖係第2圖所示的III-III箭號方向的斷面圖。第4圖係第2圖所示的IV-IV箭號方向的斷面圖。第2、3圖中將第1圖所示的轉子200的圖示省略了。第5圖係第2圖所示的定子的一端側的放大圖。以下，參照第1至5圖來說明實施形態1之電動機300的構成。 Fig. 1 is a longitudinal sectional view showing a motor according to a first embodiment of the present invention. Fig. 2 is a longitudinal sectional view showing a stator of the electric motor according to the first embodiment of the present invention. Fig. 3 is a cross-sectional view taken along line III-III of the arrow shown in Fig. 2. Fig. 4 is a cross-sectional view taken along line IV-IV of Fig. 2; In the second and third figures, the illustration of the rotor 200 shown in Fig. 1 is omitted. Fig. 5 is an enlarged view of one end side of the stator shown in Fig. 2. Hereinafter, the configuration of the motor 300 according to the first embodiment will be described with reference to Figs. 1 to 5 .
實施形態1之電動機300係具備有：定子100、配置於構成定子100之定子鐵芯1的內側之轉子200、以及配置於定子鐵芯1的徑向外側之筒狀的外殼10。 The motor 300 of the first embodiment includes a stator 100, a rotor 200 disposed inside the stator core 1 constituting the stator 100, and a cylindrical casing 10 disposed radially outward of the stator core 1.
定子鐵芯1係將從電磁鋼板衝切出的複數個環狀的薄板予以層疊而構成。定子鐵芯1其內部具有中空孔11。 The stator core 1 is formed by laminating a plurality of annular thin plates punched out from an electromagnetic steel sheet. The stator core 1 has a hollow hole 11 therein.
定子鐵芯1在周方向具有複數個槽(slot)12。在各個槽12分別配置線圈2。 The stator core 1 has a plurality of slots 12 in the circumferential direction. The coil 2 is disposed in each of the slots 12.
分別配置於各槽12之線圈2與各個槽12的內周面之間充填有作為熱傳導性樹脂部之模塑樹脂 (molded resin)部4。模塑樹脂部4的材料為環氧樹脂(epoxy resin)或不飽和聚酯樹脂(polyester resin)。 Molding resin as a thermally conductive resin portion is interposed between the coil 2 disposed in each of the grooves 12 and the inner peripheral surface of each of the grooves 12 (molded resin) part 4. The material of the molded resin portion 4 is an epoxy resin or an unsaturated polyester resin.
複數個線圈2的一端側的線圈端部2a，係在軸方向從定子鐵芯1的一端面1a突出。軸方向係表示旋轉中心軸線延伸之方向。 The coil end portion 2a on the one end side of the plurality of coils 2 protrudes from the one end surface 1a of the stator core 1 in the axial direction. The axis direction indicates the direction in which the center axis of rotation extends.
在定子鐵芯1的一端面1a，配置有包圍複數個線圈端部2a之筒狀的蓋體3a。 A cylindrical lid body 3a that surrounds the plurality of coil end portions 2a is disposed on one end surface 1a of the stator core 1.
蓋體3a係安裝於定子鐵芯1的一端面1a。具體而言，係在定子鐵芯的一端面1a預先形成凹部，在蓋體3a的端面形成突起。然後將蓋體3a的突起嵌入定子鐵芯1的凹部，以此方式將蓋體3a安裝上。安裝於定子鐵芯1的一端面1a之蓋體3a，其外徑D2係加工成比定子鐵芯1的外徑D1小。 The lid body 3a is attached to one end surface 1a of the stator core 1. Specifically, a concave portion is formed in advance on one end surface 1a of the stator core, and a projection is formed on the end surface of the lid body 3a. Then, the projection of the cover 3a is fitted into the recess of the stator core 1, and the cover 3a is mounted in this manner. The lid body 3a attached to one end surface 1a of the stator core 1 has an outer diameter D2 which is processed to be smaller than the outer diameter D1 of the stator core 1.
在定子鐵芯1的一端側，形成有覆蓋複數個線圈端部2a之作為熱傳導性樹脂部之模塑樹脂部4a。模塑樹脂部4a的材料為不飽和聚酯樹脂。 On one end side of the stator core 1, a molded resin portion 4a as a heat conductive resin portion covering a plurality of coil end portions 2a is formed. The material of the molded resin portion 4a is an unsaturated polyester resin.
具體而言，模塑樹脂部4a係形成於線圈端部2a的徑向外側與蓋體3a之間。模塑樹脂部4a也形成於線圈端部2a的徑向內側。模塑樹脂部4a還形成於線圈端部2a的軸方向前端側。 Specifically, the molded resin portion 4a is formed between the radially outer side of the coil end portion 2a and the lid body 3a. The molded resin portion 4a is also formed on the radially inner side of the coil end portion 2a. The molded resin portion 4a is also formed on the tip end side in the axial direction of the coil end portion 2a.
模塑樹脂部4a係密接於複數個線圈端部2a的整個外周面，以及密接於蓋體3a的整個內周面。模塑樹脂部4a之定子鐵芯1側的面，係與定子鐵芯1的一端面1a相接。 The molded resin portion 4a is in close contact with the entire outer peripheral surface of the plurality of coil end portions 2a, and is in close contact with the entire inner peripheral surface of the lid body 3a. The surface of the molded resin portion 4a on the stator core 1 side is in contact with the one end surface 1a of the stator core 1.
各個線圈2的另一端側的線圈端部2b，係在軸方向從定子鐵芯1的另一端面1b突出。 The coil end portion 2b on the other end side of each coil 2 protrudes from the other end surface 1b of the stator core 1 in the axial direction.
在定子鐵芯1的另一端面1b，配置有包圍複數個線圈端部2b之筒狀的蓋體3b。 A cylindrical lid body 3b that surrounds the plurality of coil end portions 2b is disposed on the other end surface 1b of the stator core 1.
蓋體3b係安裝於定子鐵芯1的另一端面1b。具體而言，係在定子鐵芯的另一端面1b預先形成凹部，在蓋體3b的端面形成突起。然後將蓋體3b的突起嵌入定子鐵芯1的凹部，以此方式將蓋體3b安裝上。安裝於定子鐵芯1的另一端面1b之蓋體3b，其外徑D2係加工成比定子鐵芯1的外徑D1小。 The lid body 3b is attached to the other end surface 1b of the stator core 1. Specifically, a concave portion is formed in advance on the other end surface 1b of the stator core, and a projection is formed on the end surface of the lid body 3b. Then, the projection of the cover 3b is fitted into the recess of the stator core 1, and the cover 3b is mounted in this manner. The cover 3b attached to the other end surface 1b of the stator core 1 has an outer diameter D2 which is processed to be smaller than the outer diameter D1 of the stator core 1.
在定子鐵芯1的另一端側，形成有覆蓋各個線圈端部2b之作為熱傳導性樹脂部之模塑樹脂部4b。模塑樹脂部4b的材料為不飽和聚酯樹脂。 On the other end side of the stator core 1, a molding resin portion 4b as a heat conductive resin portion covering each coil end portion 2b is formed. The material of the molded resin portion 4b is an unsaturated polyester resin.
具體而言，模塑樹脂部4b係形成於線圈端部2b的徑向外側與蓋體3b之間。模塑樹脂部4b也形成於線圈端部2b的徑向內側。模塑樹脂部4b還形成於線圈端部2b的軸方向前端側。 Specifically, the molded resin portion 4b is formed between the radially outer side of the coil end portion 2b and the lid body 3b. The molded resin portion 4b is also formed on the radially inner side of the coil end portion 2b. The molded resin portion 4b is also formed on the tip end side in the axial direction of the coil end portion 2b.
模塑樹脂部4b係密接於複數個線圈端部2b之各個的整個外周面，以及密接於蓋體3b的整個內周面。模塑樹脂部4b之定子鐵芯1側的面，係與定子鐵芯1的另一端面1b相接。 The molded resin portion 4b is in close contact with the entire outer peripheral surface of each of the plurality of coil end portions 2b, and is in close contact with the entire inner peripheral surface of the lid body 3b. The surface of the molded resin portion 4b on the stator core 1 side is in contact with the other end surface 1b of the stator core 1.
線圈2係實施過絕緣處理，且連接至引(lead)線20。電力經由引線20而供給至線圈2。 The coil 2 is subjected to an insulation treatment and is connected to a lead line 20. Power is supplied to the coil 2 via the lead wires 20.
轉子200係具備有：將從電磁鋼板衝切出的 複數個環狀的薄板予以層疊而構成之轉子鐵芯5、以及呈環狀配置於轉子鐵芯5的槽(slot)內及軸方向前端側之鋁導體6。轉子200係與定子鐵芯1的軸心同軸，且配置在定子鐵芯1的中空孔11內。 The rotor 200 is provided with: a die cut from an electromagnetic steel plate A rotor core 5 formed by laminating a plurality of annular thin plates, and an aluminum conductor 6 disposed annularly in a slot of the rotor core 5 and at a distal end side in the axial direction. The rotor 200 is coaxial with the axial center of the stator core 1 and disposed in the hollow hole 11 of the stator core 1.
筒狀的外殼10，係配置於兩個蓋體3a,3b之各個的徑向外側，而且配置於定子鐵芯1的徑向外側。 The cylindrical outer casing 10 is disposed on the outer side in the radial direction of each of the two lid bodies 3a and 3b, and is disposed on the outer side in the radial direction of the stator core 1.
外殼10的內徑D3係與定子鐵芯1的外徑D1相等。蓋體3a,3b兩者的外徑都比外殼10的內徑D3小。如前述，蓋體3a,3b兩者的外徑D2都比定子鐵芯1的外徑D1小。 The inner diameter D3 of the outer casing 10 is equal to the outer diameter D1 of the stator core 1. Both the outer diameters of the lids 3a, 3b are smaller than the inner diameter D3 of the outer casing 10. As described above, the outer diameter D2 of both the lid bodies 3a, 3b is smaller than the outer diameter D1 of the stator core 1.
因此，定子100在蓋體3a,3b兩者的外周面與外殼10的內周面之間具有間隙G。本實施形態之定子100，在蓋體3a,3b兩者與外殼10之間會確實形成間隙G。因此，蓋體3a,3b兩者的外周面與外殼10的內周面並不接觸。 Therefore, the stator 100 has a gap G between the outer circumferential surface of both the lids 3a, 3b and the inner circumferential surface of the outer casing 10. In the stator 100 of the present embodiment, a gap G is surely formed between the lids 3a and 3b and the outer casing 10. Therefore, the outer peripheral surfaces of both the lids 3a, 3b do not contact the inner peripheral surface of the outer casing 10.
以膨脹配合(expansion fit)將外殼10從蓋體3a側進行套嵌時，定子鐵芯1及蓋體3a會因為外殼10的熱而膨脹。 When the outer casing 10 is fitted from the side of the lid body 3a in an expansion fit, the stator core 1 and the lid body 3a are expanded by the heat of the outer casing 10.
此時定子鐵芯1及蓋體3a兩者的外徑D1,D2會擴大。因此即使蓋體3a的外徑D2擴大，蓋體的外徑D2也維持比外殼10的內徑D3小之尺寸。所以仍會有間隙G。由於此間隙G，蓋體3a並不會與外殼10接觸，所以蓋體3a的熱吸收量會比蓋體3a所接觸的定子鐵芯1的熱吸收量低。 At this time, the outer diameters D1 and D2 of both the stator core 1 and the lid body 3a are enlarged. Therefore, even if the outer diameter D2 of the lid body 3a is enlarged, the outer diameter D2 of the lid body is maintained smaller than the inner diameter D3 of the outer casing 10. So there will still be a gap G. Due to this gap G, the lid body 3a does not come into contact with the outer casing 10, so the heat absorption amount of the lid body 3a is lower than the heat absorption amount of the stator core 1 which the lid body 3a contacts.
因此，可防止外殼10在套嵌的途中卡在不預期的位置之情形。因而，外殼10的套嵌作業性會提高，定子100的製造所需的作業時間會縮短，可減低定子100的製造成本(cost)。 Therefore, it is possible to prevent the outer casing 10 from being caught in an unexpected position on the way of the nesting. Therefore, the fitting workability of the outer casing 10 is improved, the working time required for the manufacture of the stator 100 is shortened, and the manufacturing cost of the stator 100 can be reduced.
第6圖係顯示第5圖所示的間隙與線圈端部的溫度的關係之圖。橫軸表示蓋體與外殼之間的間隙的大小，縱軸表示線圈端部的溫度。第6圖係假設間隙G為0μm時線圈端部產生的熱的溫度為100℃，而顯示間隙G從0μm變化至500μm時之線圈端部的溫度。 Fig. 6 is a view showing the relationship between the gap shown in Fig. 5 and the temperature of the coil end portion. The horizontal axis represents the size of the gap between the cover and the outer casing, and the vertical axis represents the temperature of the coil end. Fig. 6 is a graph showing the temperature of the heat generated at the coil end portion when the gap G is 0 μm is 100 ° C, and the temperature at the coil end portion when the gap G is changed from 0 μm to 500 μm.
間隙G從0μm變化至100μm之線圈端部的溫度變化量為2℃以上，間隙G從100μm變化至500μm之線圈端部的溫度變化量為未達1℃。亦即間隙G從0μm到100μm之溫度變化量係比間隙G從100μm到500μm之溫度變化量大。表示：與間隙G大於等於100μm之情況相比較，間隙G不到100μm時，線圈端部產生的熱較能夠有效地傳遞至外殼10。因此，間隙G以小於100μm較佳。 The temperature change amount of the coil end portion where the gap G is changed from 0 μm to 100 μm is 2° C. or more, and the temperature change amount of the coil end portion where the gap G is changed from 100 μm to 500 μm is less than 1° C. That is, the temperature change amount of the gap G from 0 μm to 100 μm is larger than the temperature change of the gap G from 100 μm to 500 μm. It is shown that when the gap G is less than 100 μm, the heat generated at the coil end portion can be efficiently transmitted to the outer casing 10 as compared with the case where the gap G is greater than or equal to 100 μm. Therefore, the gap G is preferably less than 100 μm.
實施形態1係針對以膨脹配合將外殼10套嵌至定子鐵芯1之情況進行說明，但收縮配合之情況也可得到同樣的效果。收縮配合之情況，將外殼10套嵌至預先冷卻的定子鐵芯1之際，蓋體3a會膨脹，其外徑D2會擴大。不過即使蓋體3a的外徑D2擴大，蓋體的外徑D2也維持比外殼10的內徑D3小之尺寸。所以仍會有間隙G。由於此間隙G，蓋體3a並不會與外殼10接觸，所以蓋體 3a的熱吸收量會比蓋體3a所接觸的定子鐵芯1的熱吸收量低。因此，可防止外殼10在套嵌的途中卡在不預期的位置之情形。因而，外殼10的套嵌作業性會提高，定子100的製造所需的作業時間會縮短，可減低定子100的製造成本。 In the first embodiment, the case where the outer casing 10 is fitted to the stator core 1 by expansion fit is described, but the same effect can be obtained in the case of shrink fit. In the case of the shrink fit, when the outer casing 10 is fitted to the pre-cooled stator core 1, the cover 3a expands and the outer diameter D2 thereof expands. However, even if the outer diameter D2 of the lid body 3a is enlarged, the outer diameter D2 of the lid body is maintained to be smaller than the inner diameter D3 of the outer casing 10. So there will still be a gap G. Due to this gap G, the cover 3a does not come into contact with the outer casing 10, so the cover body The heat absorption amount of 3a is lower than the heat absorption amount of the stator core 1 which the cover body 3a contacts. Therefore, it is possible to prevent the outer casing 10 from being caught in an unexpected position on the way of the nesting. Therefore, the fitting workability of the outer casing 10 is improved, the working time required for the manufacture of the stator 100 is shortened, and the manufacturing cost of the stator 100 can be reduced.
第7圖係本發明的實施形態2之電動機的定子的斷面圖。第7圖中放大顯示實施形態2之電動機的定子的一端側。第7圖中顯示的箭號，係表示電動機300-1運轉時之線圈端部2a的溫度一定之時，線圈端部2a產生的熱傳遞到外殼10的路徑。虛線a1表示線圈端部2a到達一定的溫度之前之蓋體3a-1的外廓。實線a2表示線圈端部2a到達一定的溫度時之蓋體3a-1的外廓。間隙G係在線圈端部2a到達一定的溫度之前之蓋體3a-1與外殼10之間產生的間隙。 Fig. 7 is a cross-sectional view showing the stator of the electric motor according to the second embodiment of the present invention. Fig. 7 is an enlarged view showing one end side of the stator of the electric motor of the second embodiment. The arrow shown in Fig. 7 indicates the path through which the heat generated by the coil end portion 2a is transmitted to the casing 10 when the temperature of the coil end portion 2a during the operation of the motor 300-1 is constant. A broken line a1 indicates the outer contour of the lid body 3a-1 before the coil end portion 2a reaches a certain temperature. The solid line a2 indicates the outer contour of the lid body 3a-1 when the coil end portion 2a reaches a certain temperature. The gap G is a gap generated between the lid body 3a-1 and the outer casing 10 before the coil end portion 2a reaches a certain temperature.
實施形態2之定子，係具備有蓋體3a-1來取代實施形態1的蓋體3a。蓋體3a-1係由具有比定子鐵芯1的線膨脹係數大的線膨脹係數之材料所構成。蓋體3a-1的材料係為鋁合金、沃斯田鐵(austenite)系不銹鋼合金、銅合金、或高熱傳導樹脂。 The stator of the second embodiment includes a lid body 3a-1 instead of the lid body 3a of the first embodiment. The lid body 3a-1 is composed of a material having a linear expansion coefficient larger than the linear expansion coefficient of the stator core 1. The material of the lid body 3a-1 is an aluminum alloy, an austenite-based stainless steel alloy, a copper alloy, or a high heat conductive resin.
鋁合金的一個例子為使用於擠出用途之A6063、使用於棒材等之A5056，沃斯田鐵系不銹鋼的一個例子為SUS303、SUS304，銅合金的一個例子為鉻(chromium) 銅、鈹(beryllium)銅，高熱傳導樹脂的一個例子為混合氧化鋁填料(alumina filler)及CTBN(Carboxyl-Terminated Butadiene-Nitrile：端羧基丁腈)而成的環氧樹脂。 An example of the aluminum alloy is A6063 for extrusion use, A5056 for bars, etc., an example of the Worthfield iron-based stainless steel is SUS303, SUS304, and an example of a copper alloy is chromium. An example of copper, beryllium copper, and a high heat conductive resin is an epoxy resin obtained by mixing an alumina filler and a CTBN (Carboxyl-Terminated Butadiene-Nitrile).
電動機300-1運轉時之蓋體3a-1的外徑，係為與定子鐵芯1的外徑相等之大小，為與外殼10的內徑相等之大小。電動機300-1運轉時之蓋體3a-1的外周面係與外殼10的內周面接觸。 The outer diameter of the lid body 3a-1 when the motor 300-1 is in operation is equal to the outer diameter of the stator core 1, and is equal to the inner diameter of the outer casing 10. The outer peripheral surface of the lid body 3a-1 during the operation of the motor 300-1 is in contact with the inner peripheral surface of the outer casing 10.
以下，將與實施形態1相同的部分都標以相同的符號而將其說明予以省略，只針對不同的部分進行說明。 In the following, the same portions as those in the first embodiment are denoted by the same reference numerals, and their description will be omitted, and only the different portions will be described.
電動機300-1運轉時線圈端部2a產生的熱係首先傳遞至模塑樹脂部4a。傳遞至模塑樹脂部4a之熱係傳遞至蓋體3a-1。傳遞至蓋體3a-1之熱的一部分會經由蓋體3a-1與定子鐵芯1的接觸面而傳遞至定子鐵芯1。 The heat generated by the coil end portion 2a when the motor 300-1 is operated is first transmitted to the molded resin portion 4a. The heat transferred to the molded resin portion 4a is transmitted to the lid body 3a-1. A part of the heat transmitted to the lid body 3a-1 is transmitted to the stator core 1 via the contact surface of the lid body 3a-1 and the stator core 1.
線圈端部2a產生的熱會使得定子鐵芯1及蓋體3a-1兩者膨脹。因而定子鐵芯1及蓋體3a-1兩者的外徑D1,D2會擴大。 The heat generated by the coil end portion 2a causes both the stator core 1 and the lid body 3a-1 to expand. Therefore, the outer diameters D1, D2 of both the stator core 1 and the lid 3a-1 are enlarged.
如前述，蓋體3a-1係由具有比定子鐵芯1的線膨脹係數大的線膨脹係數之材料所構成。線圈端部2a到達一定的溫度之前之蓋體3a-1的外周面，係如虛線a1所示並未與外殼10的內周面接觸。線圈端部2a到達一定的溫度時之蓋體3a-1的外周面，則是如實線a2所示會與外殼10的內周面接觸。 As described above, the lid body 3a-1 is composed of a material having a linear expansion coefficient larger than the linear expansion coefficient of the stator core 1. The outer peripheral surface of the lid body 3a-1 before the coil end portion 2a reaches a certain temperature does not come into contact with the inner peripheral surface of the outer casing 10 as indicated by a broken line a1. When the coil end portion 2a reaches a certain temperature, the outer peripheral surface of the lid body 3a-1 comes into contact with the inner peripheral surface of the outer casing 10 as indicated by the solid line a2.
電動機300-1運轉時線圈端部2a產生的熱 係首先傳遞至模塑樹脂部4a。傳遞至模塑樹脂部4a之熱係傳遞至蓋體3a-1。 The heat generated by the coil end portion 2a when the motor 300-1 is in operation It is first transferred to the molded resin portion 4a. The heat transferred to the molded resin portion 4a is transmitted to the lid body 3a-1.
傳遞至蓋體3a-1之熱的一部分會經由蓋體3a-1與定子鐵芯1的接觸面而傳遞至定子鐵芯1。傳遞至定子鐵芯1之熱從定子鐵芯1的外周面傳遞至外殼10，然後從外殼10的表面放出。 A part of the heat transmitted to the lid body 3a-1 is transmitted to the stator core 1 via the contact surface of the lid body 3a-1 and the stator core 1. The heat transferred to the stator core 1 is transferred from the outer peripheral surface of the stator core 1 to the outer casing 10, and then discharged from the surface of the outer casing 10.
又，傳遞至蓋體3a-1之熱的一部分會經由蓋體3a-1與外殼10的接觸面而傳遞至外殼10。傳遞至外殼10之熱從外殼10的表面放出。 Further, a part of the heat transmitted to the lid body 3a-1 is transmitted to the outer casing 10 via the contact surface of the lid body 3a-1 with the outer casing 10. The heat transferred to the outer casing 10 is discharged from the surface of the outer casing 10.
在實施形態2之電動機300-1中，蓋體3a-1會膨脹而與外殼10接觸。因此，從蓋體3a-1傳遞至外殼10之熱量相對較高。因而，從外殼10放出到外部的熱的放出量會提高，線圈端部2a的冷卻效率會提高。 In the motor 300-1 of the second embodiment, the lid body 3a-1 is inflated to come into contact with the outer casing 10. Therefore, the heat transferred from the cover 3a-1 to the outer casing 10 is relatively high. Therefore, the amount of heat released from the outer casing 10 to the outside is increased, and the cooling efficiency of the coil end portion 2a is improved.
第1、2圖所示的蓋體3b亦可採用與實施形態2的蓋體3a-1一樣的材料來構成。如此的話，從蓋體3b傳遞到外殼10的熱量會相對較高，線圈端部2b的冷卻效率會提高。 The lid body 3b shown in Figs. 1 and 2 can also be formed of the same material as the lid body 3a-1 of the second embodiment. In this case, the heat transferred from the lid body 3b to the outer casing 10 is relatively high, and the cooling efficiency of the coil end portion 2b is improved.
第8圖係本發明的實施形態3之電動機的定子的斷面圖。第8圖中放大顯示實施形態3之電動機的定子的一端側。第8圖中顯示的箭號，係表示電動機300-2運轉時之線圈端部2a的溫度一定之時，線圈端部2a產生的熱傳遞到外殼10的路徑。虛線a3表示線圈端部2a到達一定的溫 度之前之蓋體3a-2的外廓。實線a4表示線圈端部2a到達一定的溫度時之蓋體3a-2的外廓。間隙G係在線圈端部2a到達一定的溫度之前之蓋體3a-2與外殼10之間產生的間隙。 Fig. 8 is a cross-sectional view showing the stator of the electric motor according to the third embodiment of the present invention. Fig. 8 is an enlarged view showing one end side of the stator of the electric motor of the third embodiment. The arrow shown in Fig. 8 indicates the path through which the heat generated by the coil end portion 2a is transmitted to the casing 10 when the temperature of the coil end portion 2a during the operation of the motor 300-2 is constant. The dotted line a3 indicates that the coil end 2a reaches a certain temperature. The outline of the cover 3a-2 before the degree. The solid line a4 indicates the outer periphery of the lid body 3a-2 when the coil end portion 2a reaches a certain temperature. The gap G is a gap generated between the lid body 3a-2 and the outer casing 10 before the coil end portion 2a reaches a certain temperature.
實施形態3之定子，係具備有蓋體3a-2來取代實施形態1的蓋體3a。蓋體3a-2係由具有小於等於定子鐵芯1的線膨脹係數之線膨脹係數的材料所構成。蓋體3a-2的材料係為鑄鐵、鋼或鐵合金。 The stator of the third embodiment includes a lid body 3a-2 instead of the lid body 3a of the first embodiment. The cover 3a-2 is composed of a material having a linear expansion coefficient equal to or smaller than the linear expansion coefficient of the stator core 1. The material of the cover 3a-2 is cast iron, steel or iron alloy.
鑄鐵的一個例子為FC200等之普通鑄鐵、FCD400等之球狀石墨鑄鐵，鋼的一個例子為SC450等之碳鋼、STKM等之機械結構用碳鋼管材，鐵合金的一個例子為SCM等之鉬鉻(chromium molybdenum)鋼。 An example of the cast iron is a cast iron such as ordinary cast iron such as FC200 or a spheroidal graphite cast iron such as FCD400. An example of the steel is carbon steel such as SC450 or the like, and carbon steel pipe for mechanical structure such as STKM, and an example of the iron alloy is molybdenum chromium such as SCM. (chromium molybdenum) steel.
電動機300-2運轉時之蓋體3a-2的外徑，係為比定子鐵芯1的外徑小之大小，且為比外殼10的內徑小之大小。電動機300-2運轉時之蓋體3a-2的外周面並不會與外殼10的內周面接觸。 The outer diameter of the lid body 3a-2 when the motor 300-2 is in operation is smaller than the outer diameter of the stator core 1, and is smaller than the inner diameter of the outer casing 10. The outer peripheral surface of the lid body 3a-2 during the operation of the motor 300-2 does not come into contact with the inner peripheral surface of the outer casing 10.
以下，將與實施形態1相同的部分都標以相同的符號而將其說明予以省略，只針對不同的部分進行說明。 In the following, the same portions as those in the first embodiment are denoted by the same reference numerals, and their description will be omitted, and only the different portions will be described.
電動機300-2運轉時線圈端部2a產生的熱係首先傳遞至模塑樹脂部4a。傳遞至模塑樹脂部4a之熱係傳遞至蓋體3a-2。傳遞至蓋體3a-2之熱的一部分會經由蓋體3a-2與定子鐵芯1的接觸面而傳遞至定子鐵芯1。 The heat generated by the coil end portion 2a when the motor 300-2 is operated is first transmitted to the molded resin portion 4a. The heat transferred to the molded resin portion 4a is transmitted to the lid body 3a-2. A part of the heat transmitted to the lid body 3a-2 is transmitted to the stator core 1 via the contact surface of the lid body 3a-2 with the stator core 1.
線圈端部2a產生的熱會使得定子鐵芯1及 蓋體3a-2兩者膨脹。因而定子鐵芯1及蓋體3a-2兩者的外徑D1,D2會擴大。不過，蓋體3a-2係由具有小於等於定子鐵芯1的線膨脹係數之線膨脹係數的材料所構成。因此，即使蓋體3a-2的外徑D2擴大，蓋體的外徑D2也維持比外殼10的內徑D3小之尺寸。 The heat generated by the coil end portion 2a causes the stator core 1 and Both the cover bodies 3a-2 are inflated. Therefore, the outer diameters D1, D2 of both the stator core 1 and the lid 3a-2 are enlarged. However, the cover 3a-2 is composed of a material having a linear expansion coefficient equal to or smaller than the linear expansion coefficient of the stator core 1. Therefore, even if the outer diameter D2 of the lid body 3a-2 is enlarged, the outer diameter D2 of the lid body is maintained smaller than the inner diameter D3 of the outer casing 10.
因此，線圈端部2a到達一定的溫度之前之蓋體3a-2的外周面，係如虛線a3所示並未與外殼10的內周面接觸。 Therefore, the outer peripheral surface of the lid body 3a-2 before the coil end portion 2a reaches a certain temperature does not come into contact with the inner peripheral surface of the outer casing 10 as indicated by a broken line a3.
線圈端部2a到達一定的溫度時之蓋體3a-2的外周面，係如虛線a4所示並未與外殼10的內周面接觸。此時因為蓋體3a-2並未與外殼10接觸，所以不會有由於蓋體3a-2與外殼10的相互干涉而產生的壓縮應力作用至模塑樹脂部4a。因此可抑制由於壓縮應力之作用使得模塑樹脂部4a破裂(crack)之情形發生。因而，會抑制模塑樹脂部4a的一部分脫落到電動機內部之情形，電動機300-2的品質會提高。 When the coil end portion 2a reaches a certain temperature, the outer peripheral surface of the lid body 3a-2 does not come into contact with the inner peripheral surface of the outer casing 10 as indicated by a broken line a4. At this time, since the lid body 3a-2 is not in contact with the outer casing 10, there is no compressive stress generated by the mutual interference of the lid body 3a-2 and the outer casing 10 to the molding resin portion 4a. Therefore, it is possible to suppress the occurrence of cracking of the molded resin portion 4a due to the action of the compressive stress. Therefore, it is suppressed that a part of the molded resin portion 4a falls off inside the motor, and the quality of the motor 300-2 is improved.
傳遞至定子鐵芯1之熱從定子鐵芯1的外周面傳遞至外殼10，然後從外殼10的表面放出。 The heat transferred to the stator core 1 is transferred from the outer peripheral surface of the stator core 1 to the outer casing 10, and then discharged from the surface of the outer casing 10.
傳遞至蓋體3a-2之熱的一部分會放出至蓋體3a-2的外周面與外殼10的間隙G。放出至間隙G之熱從外殼10的內周面傳遞至外殼10，然後從外殼10的表面放出。 A part of the heat transmitted to the lid body 3a-2 is discharged to the gap G between the outer peripheral surface of the lid body 3a-2 and the outer casing 10. The heat released to the gap G is transmitted from the inner peripheral surface of the outer casing 10 to the outer casing 10, and then discharged from the surface of the outer casing 10.
在實施形態3之電動機300-2中，無需使用用來防止模塑樹脂部4a破裂的情形發生之材料，亦即可承 受壓縮應力之高價的樹脂。因而，可減低定子的製造成本。 In the motor 300-2 of the third embodiment, it is not necessary to use a material for preventing the molding resin portion 4a from being broken, and it is also possible to A high-priced resin that is subjected to compressive stress. Thus, the manufacturing cost of the stator can be reduced.
第1、2圖所示的蓋體3b亦可採用與實施形態3的蓋體3a-2一樣的材料來構成。如此的話，就會抑制模塑樹脂部4b破裂的情形發生，電動機300-2的品質會提高。 The lid body 3b shown in Figs. 1 and 2 can also be formed of the same material as the lid body 3a-2 of the third embodiment. In this case, the occurrence of cracking of the molded resin portion 4b is suppressed, and the quality of the motor 300-2 is improved.
實施形態1至3中，說明的是將蓋體加工成使得蓋體的外徑比定子鐵芯1的外徑小之例。但在蓋體的加工時，用來加工蓋體之工作機械的前端部卻有接觸到定子鐵芯1之可能性。一旦工作機械的前端部接觸到定子鐵芯1，蓋體的加工性就會變差，而難以確保蓋體的尺寸精度。將用來消除如此的問題之定子的變形例顯示於第9、10圖中。 In the first to third embodiments, the cover is processed so that the outer diameter of the cover is smaller than the outer diameter of the stator core 1. However, at the time of processing the cover body, the front end portion of the work machine for processing the cover body has the possibility of contacting the stator core 1. When the front end portion of the working machine comes into contact with the stator core 1, the workability of the cover body is deteriorated, and it is difficult to ensure the dimensional accuracy of the cover body. A modification of the stator for eliminating such a problem is shown in Figs.
第9圖係顯示與本發明的實施形態1至3有關的定子的第一變形例之斷面圖。第9圖中放大顯示定子的一端側。 Fig. 9 is a cross-sectional view showing a first modification of the stator according to the first to third embodiments of the present invention. The one end side of the stator is shown enlarged in Fig. 9.
第9圖所示的定子係具備有定子鐵芯1-1來取代實施形態1至3的定子鐵芯1。定子鐵芯1-1其蓋體3a側的一端部1c的外徑係預先形成為與蓋體3a的外徑D2相等之大小。間隙G係調整外徑後的蓋體3a與外殼10之間產生的間隙。 The stator core shown in Fig. 9 is provided with a stator core 1-1 instead of the stator core 1 of the first to third embodiments. The outer diameter of the one end portion 1c of the stator core 1-1 on the lid body 3a side is formed in advance to be equal to the outer diameter D2 of the lid body 3a. The gap G is a gap formed between the lid body 3a and the outer casing 10 after the outer diameter is adjusted.
藉由預先加工定子鐵芯1-1的一端部1c，可在調整安裝至定子鐵芯1-1之蓋體3a的外徑之際防止工作機械的前端部接觸到定子鐵芯1-1的一端部1c。因而，蓋體3a的外形的尺寸精度會提高，外殼10的套嵌作業性會 更加提高。 By processing the one end portion 1c of the stator core 1-1 in advance, the front end portion of the machine tool can be prevented from coming into contact with the stator core 1-1 while adjusting the outer diameter of the cover body 3a attached to the stator core 1-1. One end portion 1c. Therefore, the dimensional accuracy of the outer shape of the lid body 3a is improved, and the fitting workability of the outer casing 10 is improved. More improved.
第9圖所示的定子鐵芯1-1亦可與實施形態2、3的蓋體組合。將實施形態2、3的蓋體組合至定子鐵芯1-1，除了實施形態2、3的效果之外，還會得到使外殼10的套嵌作業性更加提高之效果。 The stator core 1-1 shown in Fig. 9 can also be combined with the cover of the second and third embodiments. When the lid bodies of the second and third embodiments are combined with the stator core 1-1, in addition to the effects of the second and third embodiments, the effect of improving the nesting workability of the outer casing 10 is obtained.
第10圖係顯示與本發明的實施形態1至3有關的定子的第二變形例之斷面圖。第10圖中放大顯示定子的一端側。 Fig. 10 is a cross-sectional view showing a second modification of the stator according to the first to third embodiments of the present invention. The one end side of the stator is shown enlarged in Fig. 10.
第10圖所示的定子係具備有蓋體3a-3來取代實施形態1至3的蓋體3a,3a-1,3a-2。而且第10圖所示的定子係具備有定子鐵芯1-2來取代實施形態1至3的定子鐵芯1。間隙G係調整外徑後的蓋體3a-3與外殼10之間產生的間隙。 The stator system shown in Fig. 10 is provided with a lid body 3a-3 instead of the lid bodies 3a, 3a-1, 3a-2 of the first to third embodiments. Further, the stator system shown in Fig. 10 is provided with a stator core 1-2 instead of the stator core 1 of the first to third embodiments. The gap G is a gap formed between the lid body 3a-3 and the outer casing 10 after the outer diameter is adjusted.
蓋體3a-3其在定子鐵芯1-2側的第一端部31的外徑，係比與定子鐵芯1-2側相反側的第二端部32的外徑小。第一端部31的外徑係預先形成為比第二端部32的外徑小。 The outer diameter of the first end portion 31 of the lid body 3a-3 on the side of the stator core 1-2 is smaller than the outer diameter of the second end portion 32 on the side opposite to the side of the stator core 1-2. The outer diameter of the first end portion 31 is formed to be smaller than the outer diameter of the second end portion 32 in advance.
定子鐵芯1-2其在蓋體3a-3側的一端部41的外徑，係與蓋體3a-3的第一端部31的外徑相等。一端部41的外徑係預先形成為與第一端部31的外徑相等之大小。 The outer diameter of the one end portion 41 of the stator core 1-2 on the side of the lid body 3a-3 is equal to the outer diameter of the first end portion 31 of the lid body 3a-3. The outer diameter of the one end portion 41 is formed in advance to be equal to the outer diameter of the first end portion 31.
藉由定子鐵芯1-2與蓋體3a-3之組合，在蓋體3a-3與定子鐵芯1-2的交界部形成溝部50。 The groove portion 50 is formed at a boundary portion between the lid body 3a-3 and the stator core 1-2 by a combination of the stator core 1-2 and the lid body 3a-3.
在調整安裝至定子鐵芯1-2之蓋體3a-3的 外徑之際，可利用溝部50而防止工作機械的前端接觸到定子鐵芯1-2的一端部41。因而，蓋體3a-3的外形的尺寸精度會提高，外殼10的套嵌作業性會更加提高。 Adjusting the cover 3a-3 mounted to the stator core 1-2 At the outer diameter, the groove portion 50 can be used to prevent the tip end of the machine tool from coming into contact with the one end portion 41 of the stator core 1-2. Therefore, the dimensional accuracy of the outer shape of the lid body 3a-3 is improved, and the fitting workability of the outer casing 10 is further improved.
實施形態1至3的定子鐵芯並不限定於將複數片電磁鋼板層疊而成者。定子鐵芯亦可為將鋼材加工成圓筒狀之一體式的鐵芯、將樹脂與鐵粉混合然後予以塑形固化而成的樹脂鐵芯、或將磁性粉予以加壓成形而成的壓粉鐵芯(dust core)。定子鐵芯的種類係按照目的及用途而決定。 The stator cores of the first to third embodiments are not limited to those in which a plurality of electromagnetic steel sheets are laminated. The stator core may be a resin core in which a steel material is processed into a cylindrical one-piece iron core, a resin is mixed with iron powder and then shaped and solidified, or a magnetic powder is press-formed. Powder core. The type of stator core is determined according to the purpose and use.
又，實施形態1至3的蓋體亦可為外徑從轉子鐵芯側向遠離轉子鐵芯側逐漸縮徑之研磨鉢狀。此形狀會使外殼10套嵌至定子鐵芯1之作業變容易。 Further, the lid body according to the first to third embodiments may have a polishing shape in which the outer diameter gradually decreases from the rotor core side toward the rotor core side. This shape makes it easy to fit the outer casing 10 to the stator core 1.
又，實施形態1至3的轉子200亦可為感應電動機用的轉子、或同步電動機用的轉子。 Further, the rotor 200 according to the first to third embodiments may be a rotor for an induction motor or a rotor for a synchronous motor.
以上的實施形態所揭示的構成，表示的只是本發明的內容的一例，除此之外，還可與別的公知的技術組合、或在未脫離本發明的主旨之範圍內將構成的一部分予以省略、變更。 The configuration disclosed in the above embodiments is merely an example of the content of the present invention, and a part of the configuration may be combined with other known techniques or within a scope not departing from the gist of the present invention. Omitted and changed.
1‧‧‧定子鐵芯 1‧‧‧Standard core
1a‧‧‧一端面 1a‧‧‧One end
1b‧‧‧另一端面 1b‧‧‧Other end face
2a、2b‧‧‧線圈端部 2a, 2b‧‧‧ coil ends
3a、3b‧‧‧蓋體 3a, 3b‧‧‧ cover
4a、4b‧‧‧模塑樹脂部 4a, 4b‧‧‧ molding resin department
5‧‧‧轉子鐵芯 5‧‧‧Rotor core
6‧‧‧鋁導體 6‧‧‧Aluminum conductor
10‧‧‧外殼 10‧‧‧ Shell
11‧‧‧中空孔 11‧‧‧ hollow hole
20‧‧‧引線 20‧‧‧ lead
200‧‧‧轉子 200‧‧‧Rotor
300‧‧‧電動機 300‧‧‧Electric motor
D1、D2‧‧‧外徑 D1, D2‧‧‧ OD
D3‧‧‧內徑 D3‧‧‧Inner diameter
Claims (5)
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| PCT/JP2015/077370 WO2017056163A1 (en) | 2015-09-28 | 2015-09-28 | Electric motor |
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| TW201713013A TW201713013A (en) | 2017-04-01 |
| TWI609559B true TWI609559B (en) | 2017-12-21 |
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| KR (1) | KR101905370B1 (en) |
| CN (1) | CN108141065A (en) |
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| WO2017085860A1 (en) * | 2015-11-20 | 2017-05-26 | 三菱電機株式会社 | Electric motor |
| US11190076B2 (en) | 2016-11-28 | 2021-11-30 | Panasonic Inteliectual Property Management Co., Ltd. | Motor |
| CN110383643B (en) * | 2017-02-28 | 2021-04-02 | 松下知识产权经营株式会社 | Molded motor |
| JP6599930B2 (en) * | 2017-06-12 | 2019-10-30 | ファナック株式会社 | Motor and manufacturing method thereof |
| JP7208350B2 (en) * | 2019-01-25 | 2023-01-18 | ファナック株式会社 | Electric motor with improved heat dissipation and productivity, and method for manufacturing the same |
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| TW204419B (en) * | 1991-10-22 | 1993-04-21 | Toshiba Co Ltd | |
| TW201126878A (en) * | 2009-12-22 | 2011-08-01 | Nidec Corp | Motor |
| JP2013066314A (en) * | 2011-09-19 | 2013-04-11 | Nippon Densan Corp | Motor and manufacturing method of the same |
| CN103855821A (en) * | 2012-12-04 | 2014-06-11 | 发那科株式会社 | Stator of electric motor |
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| JPS54183602U (en) * | 1978-06-16 | 1979-12-26 | ||
| JPS591683B2 (en) | 1979-06-29 | 1984-01-13 | 株式会社 保谷硝子 | artificial teeth |
| JP3262716B2 (en) * | 1996-08-02 | 2002-03-04 | 山洋電気株式会社 | Molded motor |
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- 2015-09-28 WO PCT/JP2015/077370 patent/WO2017056163A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW204419B (en) * | 1991-10-22 | 1993-04-21 | Toshiba Co Ltd | |
| TW201126878A (en) * | 2009-12-22 | 2011-08-01 | Nidec Corp | Motor |
| JP2013066314A (en) * | 2011-09-19 | 2013-04-11 | Nippon Densan Corp | Motor and manufacturing method of the same |
| CN103855821A (en) * | 2012-12-04 | 2014-06-11 | 发那科株式会社 | Stator of electric motor |
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| DE112015006790T5 (en) | 2018-04-26 |
| CN108141065A (en) | 2018-06-08 |
| JP5972502B1 (en) | 2016-08-17 |
| KR20180032661A (en) | 2018-03-30 |
| WO2017056163A1 (en) | 2017-04-06 |
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| JPWO2017056163A1 (en) | 2017-10-05 |
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