JP3199075B2 - Laminated core - Google Patents
Laminated coreInfo
- Publication number
- JP3199075B2 JP3199075B2 JP31395991A JP31395991A JP3199075B2 JP 3199075 B2 JP3199075 B2 JP 3199075B2 JP 31395991 A JP31395991 A JP 31395991A JP 31395991 A JP31395991 A JP 31395991A JP 3199075 B2 JP3199075 B2 JP 3199075B2
- Authority
- JP
- Japan
- Prior art keywords
- thin steel
- projection
- recess
- protrusion
- steel plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Manufacture Of Motors, Generators (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電動機、発電機、電磁
石等の積層鉄心に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated iron core for a motor, a generator, an electromagnet and the like.
【０００２】[0002]
【従来の技術】従来、薄板鋼板を複数枚積層して積層鉄
心を形成する場合、例えば電動機の積層鉄心を図３に示
すように、各薄板鋼板１の一方側面に突出する突起部２
を複数個設け、その結果、他方側面に突起部２に対応す
る凹部３を形成しておく。そして、隣接する薄板鋼板の
うちの一方の薄板鋼板１ａの突起部２を他方の薄板鋼板
１ｂの凹部３に加圧しながら嵌合し、突起部２の側面と
凹部３の側面の摩擦力によって隣接する薄板鋼板同士を
固定している（例えば、実公昭６２−１１１７３号公
報）。2. Description of the Related Art Conventionally, when a laminated iron core is formed by laminating a plurality of thin steel plates, for example, as shown in FIG.
Are provided, and as a result, a concave portion 3 corresponding to the protruding portion 2 is formed on the other side surface. Then, the protruding portion 2 of one of the adjacent thin steel plates 1a is fitted to the recess 3 of the other thin steel plate 1b while being pressed, and is fitted by the frictional force between the side surface of the protruding portion 2 and the side surface of the recess 3. (For example, Japanese Utility Model Publication No. 62-11173).
【０００３】[0003]
【発明が解決しようとする課題】ところが、突起部や凹
部を形成するためのポンチとダイのクリアランスのバラ
ツキや、ポンチやダイの切れ味のバラツキによって突起
部と凹部の締めしろが変動するが、図２（ｂ）に示すよ
うに、突起部と凹部の締めしろに比例して、突起部と凹
部の側面の摩擦力が大きくなる。ところで、薄板鋼板同
士を加圧する力が比較的弱い場合、突起部と凹部の締め
しろの小さい部分は完全に薄板鋼板同士が密着するが、
締めしろの大きい部分は隣接する薄板鋼板の間に隙間が
生じて平行度が悪くなり、積層するにしたがって積層鉄
心に曲がりが生じていた。この曲がりを防ぐため、薄板
鋼板を交互に１８０°回転させて積層するなどの手間を
かけていた。また、薄板鋼板同士を加圧する力が比較的
強い場合、締めしろの大きい部分も薄板鋼板同士が完全
に密着し、積層鉄心の曲がりは少なくなるが、突起部と
凹部の側面の摩擦力が大きくなるため、突起部の近くの
外周部または内周部が押し出されて脹れ現象が生じてい
た。この脹れ現象を防ぐために、あらかじめ、突起部の
近傍の外周部または内周部に切欠き部などの逃がしを設
けてた。そのため、フレームやシャフトへの圧入による
摩擦力が弱く、回り止めの効果が低くなったり、加工工
数が増えたりするという欠点があった。本発明は、突起
部と凹部の締めしろが変動しても、突起部と凹部の側面
の摩擦力が変化しないようにして、精度が高く、製造工
数が少ない積層鉄心を提供することを目的とするもので
ある。However, the interference between the punch and the die for forming the projection and the concave portion and the sharpness of the punch and the die vary the interference between the projection and the concave portion. As shown in FIG. 2B, the frictional force between the protrusion and the side surface of the recess increases in proportion to the interference between the protrusion and the recess. By the way, when the force for pressing the thin steel plates is relatively weak, the thin portions of the protrusions and the recesses with a small interference completely contact the thin steel plates,
In a portion with a large interference, a gap was formed between the adjacent thin steel plates, the parallelism was deteriorated, and as the layers were laminated, the laminated iron core was bent. In order to prevent this bending, it has been troublesome to alternately rotate the thin steel plates by 180 ° and stack them. In addition, when the force for pressing the thin steel plates is relatively strong, the thin steel plates are completely adhered to each other even in a portion with a large interference, and the bending of the laminated iron core is reduced, but the frictional force between the protrusion and the side surface of the concave portion is large. Therefore, the outer peripheral portion or the inner peripheral portion near the protrusion is pushed out, and the phenomenon of swelling has occurred. In order to prevent this swelling phenomenon, relief such as a notch is provided in the outer peripheral portion or the inner peripheral portion in the vicinity of the projection. Therefore, the frictional force due to the press-fitting into the frame or the shaft is weak, and there is a disadvantage that the detent effect is reduced and the number of processing steps is increased. An object of the present invention is to provide a laminated core having high accuracy and a small number of manufacturing steps, so that even if the interference between the projection and the concave portion fluctuates, the frictional force on the side surface of the projection and the concave portion does not change. Is what you do.
【０００４】[0004]
【課題を解決するための手段】本発明は、薄板鋼板の一
方側面に設けた突起部と前記突起部に対応して他方側面
に形成した凹部とを備えた複数枚の薄板鋼板を積層し、
前記隣接する薄板鋼板の突起部と凹部とを嵌合して互い
に固定した積層鉄心において、前記突起部の内周側に沿
って間隔をあけて薄板鋼板を貫通する細い長穴状の逃が
し穴を設け、前記突起部と逃がし穴との間に変形部を形
成したものである。According to the present invention, a plurality of thin steel plates having a projection provided on one side surface of a thin steel plate and a concave portion formed on the other side corresponding to the projection portion are laminated.
In the laminated iron core in which the protrusions and recesses of the adjacent thin steel plates are fitted and fixed to each other , along the inner peripheral side of the protrusions.
A long, narrow hole that penetrates a thin steel plate at intervals
A hole is formed, and a deformed part is formed between the protrusion and the relief hole.
It has been achieved .
【０００５】[0005]
【作用】薄板鋼板の突起部の近傍に逃がし穴を設けてあ
るので、隣接する薄板鋼板の凹部に突起部を加圧・嵌合
すると、突起部と凹部の締めしろに応じて生じる突起部
の側面と凹部の側面との摩擦力により、突起部と逃がし
穴との間の変形部が逃がし穴の方向に押し付けられて変
形する。突起部と凹部の締めしろが小さく、変形部の変
形が弾性変形範囲内では摩擦力は増加するが、突起部と
凹部の締めしろが変動して締めしろが大きくなり、変形
部の変形が塑性変形範囲にまで達すると、突起部の側面
と凹部の側面との摩擦力はほぼ一定になる。A relief hole is provided in the vicinity of the projection of the thin steel plate, so that when the projection is pressed and fitted into the recess of the adjacent thin steel plate, the projection formed by the interference between the projection and the recess is formed. Due to the frictional force between the side surface and the side surface of the concave portion, the deformed portion between the projection and the relief hole is pressed in the direction of the relief hole and deformed. The interference between the projections and the recesses is small, and the deformation of the deformed part is within the elastic deformation range, the frictional force increases, but the interference between the projections and the recesses fluctuates and the interference increases, and the deformation of the deformed part becomes plastic. When the deformation range is reached, the frictional force between the side surface of the projection and the side surface of the recess becomes substantially constant.
【０００６】[0006]
【実施例】本発明を図に示す実施例について説明する。
図１（ａ）は本発明の電動機の固定子鉄心の実施例を示
す正面図、図１（ｂ）は図１（ａ）のＢ−Ｂ断面に沿う
側断面図で、薄板鋼板１の外周付近の４か所に、従来例
の図３に示したものと同じように、薄板鋼板１の一方側
に突出する突起部２を設け、その結果、他方側に突起部
２に対応する凹部３を形成してある。各突起部２の内周
側に沿って間隔をあけて薄板鋼板１を貫通する細い長穴
状の逃がし穴４を設け、突起部と逃がし穴４との間に変
形部５を形成してある。このような薄板鋼板１を複数枚
重ね、薄板鋼板１ａの突起部２を隣接する薄板鋼板１ｂ
の凹部３に加圧・嵌合すると、突起部と凹部の締めしろ
に応じて生じる突起部２の側面と凹部３の側面との摩擦
力により、突起部２と逃がし穴４との間の変形部５が逃
がし穴４の方向に押し付けられて変形する。突起部２と
凹部３の締めしろが小さく、変形部５の変形が弾性変形
範囲内では摩擦力は増加するが、突起部２と凹部３の締
めしろが変動して締めしろが大きくなり、変形部５の変
形が塑性変形範囲にまで達すると、突起部２の側面と凹
部３の側面との摩擦力は、図２（ａ）に示すように、ほ
ぼ一定になる。なお、図１に示した上記突起部２は薄板
鋼板１ａの一方側面にＶ字状に押し出され、その両側面
が切断されて、他の薄板鋼板１ｂの凹部３に嵌合し、突
起部２の側面が凹部３の側面に現れた薄板鋼板１の切断
面と接触するものであるが、突起部によってその両側面
が切断されない、例えば円形断面の突起部を円形断面の
凹部に嵌合するような突起部と凹部の組み合わせであれ
ばどのよう形状でも適用できる。また、逃がし穴４を設
ける位置は突起部２の内周側に限るものではなく、突起
部と凹部の嵌合によって生じる影響を防止したい突起部
近傍に設ければ良い。また、逃がし穴４の形状は突起部
２の周縁に沿った形状について説明したが、変形部５の
変形が突起部２と凹部３の許容できる摩擦力で塑性変形
範囲に達する形状であればどのような形状でも良い。ま
た、以上は電動機の固定子鉄心について説明したが、積
層鉄心は固定子鉄心に限るものではなく、薄板鋼板の一
方側面に突起部を設けて、その結果、他方側面に凹部を
形成し、隣接する薄板鋼板の突起部と凹部とを嵌合して
互いに固定する積層鉄心であれば、回転子鉄心やスイッ
チなどに使用される電磁石の積層鉄心にも適用できる。BRIEF DESCRIPTION OF THE DRAWINGS FIG.
FIG. 1A is a front view showing an embodiment of a stator core of an electric motor according to the present invention, and FIG. 1B is a side sectional view taken along the line BB of FIG. Protrusions 2 protruding from one side of the thin steel plate 1 are provided at four places in the same manner as shown in FIG. 3 of the conventional example, and as a result, the recesses 3 corresponding to the protrusions 2 are provided on the other side. Is formed. A long slot-shaped relief hole 4 penetrating the thin steel plate 1 is provided at intervals along the inner peripheral side of each projection 2, and a deformed portion 5 is formed between the projection and the relief hole 4. . A plurality of such thin steel plates 1 are stacked, and the protruding portion 2 of the thin steel plate 1a is adjacent to the thin steel plate 1b.
Of the projection 2 and the relief hole 4 due to the frictional force between the side surface of the projection 2 and the side surface of the recess 3 generated according to the interference between the projection and the recess when pressurized and fitted into the recess 3. The portion 5 is pressed in the direction of the relief hole 4 and deforms. Although the interference between the projection 2 and the recess 3 is small and the deformation of the deformable portion 5 is within the elastic deformation range, the frictional force increases. However, the interference between the projection 2 and the recess 3 fluctuates and the interference becomes large. When the deformation of the portion 5 reaches the plastic deformation range, the frictional force between the side surface of the projection 2 and the side surface of the concave portion 3 becomes substantially constant as shown in FIG. The protrusion 2 shown in FIG. 1 is extruded into a V-shape on one side surface of the thin steel plate 1a, and both side surfaces thereof are cut and fitted into the recess 3 of the other thin steel plate 1b. Is in contact with the cut surface of the thin steel plate 1 appearing on the side surface of the concave portion 3, but the both side surfaces are not cut by the protruding portion. For example, a protrusion having a circular cross section is fitted into the concave portion having a circular cross section. Any shape can be applied as long as it is a combination of a protruding portion and a concave portion. Further, the position where the escape hole 4 is provided is not limited to the inner peripheral side of the protrusion 2, and may be provided near the protrusion where it is desired to prevent the influence caused by the fitting of the protrusion and the recess. Although the shape of the relief hole 4 has been described along the shape of the periphery of the projection 2, any shape can be used as long as the deformation of the deformed portion 5 reaches a plastic deformation range with an allowable frictional force between the projection 2 and the recess 3. Such a shape may be used. In the above, the stator core of the electric motor has been described. However, the laminated core is not limited to the stator core, and a protrusion is provided on one side of a thin steel plate, and as a result, a recess is formed on the other side, and the The present invention can be applied to a laminated core of an electromagnet used for a rotor core, a switch, and the like, as long as the laminated core fixes a projection and a recess of a thin steel plate to be fixed to each other by fitting.
【０００７】[0007]
【発明の効果】以上述べたように、本発明によれば、薄
板鋼板の一方側面に突起部を設けて、その結果、他方側
面に凹部を形成し、前記突起部の内周側に沿って間隔を
あけて薄板鋼板を貫通する細い長穴状の逃がし穴を設
け、前記突起部と逃がし穴との間に変形部を形成してあ
るので、隣接する薄板鋼板の凹部に突起部を加圧・嵌合
した際に、突起部と凹部の締めしろに応じて生じる突起
部の側面と凹部の側面との摩擦力により、突起部と逃が
し穴との間の変形部が逃がし穴の方向に押し付けられて
変形し、突起部と凹部との嵌合によって生じる突起部側
面と凹部側面との摩擦力を一定にすることができる。し
たがって、精度が高く、製造工数が少ない積層鉄心を提
供できる効果がある。As described above, according to the present invention, a projection is provided on one side surface of a thin steel plate, and consequently, a recess is formed on the other side surface, and along the inner peripheral side of the projection portion. Interval
Open a thin long hole-shaped relief hole through the thin steel plate.
A deformed portion is formed between the protrusion and the escape hole.
As a result, the protrusion is pressed and fitted into the recess of the adjacent thin steel plate.
Projections that occur due to the interference between the projections and recesses
The protrusion between the projection and the relief
The deformed part between the hole and the hole is pressed in the direction of the relief hole
Deformation, protrusion side caused by fitting of protrusion and recess
The frictional force between the surface and the side surface of the recess can be made constant. I
Therefore, high precision, there is an effect capable of providing a laminated core manufacturing steps is small.
【図１】本発明の実施例を示す正面図および側断面図で
ある。FIG. 1 is a front view and a side sectional view showing an embodiment of the present invention.
【図２】突起部と凹部の締めしろと摩擦力の関係を示す
説明図である。FIG. 2 is an explanatory diagram showing a relationship between interference between a protrusion and a recess and frictional force.
【図３】従来例を示す正面図および側断面図である。FIG. 3 is a front view and a side sectional view showing a conventional example.
１ 薄板鋼板 ２ 突起部 ３ 凹部 ４ 逃がし穴 ５ 変形部 DESCRIPTION OF SYMBOLS 1 Thin steel plate 2 Projection part 3 Concave part 4 Escape hole 5 Deformation part
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H02K 1/00 - 1/16 H02K 1/18 - 1/26 H02K 1/28 - 1/34 H02K 15/00 - 15/02 H02K 15/04 - 15/16 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) H02K 1/00-1/16 H02K 1/18-1/26 H02K 1/28-1/34 H02K 15 / 00-15/02 H02K 15/04-15/16
Claims (1)
記突起部に対応して他方側面に形成した凹部とを備えた
複数枚の薄板鋼板を積層し、前記隣接する薄板鋼板の突
起部と凹部とを嵌合して互いに固定した積層鉄心におい
て、前記突起部の内周側に沿って間隔をあけて薄板鋼板を貫
通する細い長穴状の逃がし穴を設け、前記突起部と逃が
し穴との間に変形部を形成し たことを特徴とする積層鉄
心。1. A plurality of thin steel plates each having a projection provided on one side surface of a thin steel plate and a concave portion formed on the other side surface corresponding to the projection portion, and the projections of the adjacent thin steel plates are stacked. And the recess are fitted together and fixed to each other, and the thin steel sheet is penetrated at intervals along the inner peripheral side of the protrusion.
A long, narrow hole-shaped relief hole is provided to allow the protrusion to escape.
A laminated iron core having a deformed portion formed between the piercing hole and the piercing hole .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31395991A JP3199075B2 (en) | 1991-10-30 | 1991-10-30 | Laminated core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31395991A JP3199075B2 (en) | 1991-10-30 | 1991-10-30 | Laminated core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05122876A JPH05122876A (en) | 1993-05-18 |
| JP3199075B2 true JP3199075B2 (en) | 2001-08-13 |
Family
ID=18047551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31395991A Expired - Fee Related JP3199075B2 (en) | 1991-10-30 | 1991-10-30 | Laminated core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3199075B2 (en) |
-
1991
- 1991-10-30 JP JP31395991A patent/JP3199075B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05122876A (en) | 1993-05-18 |
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