JPH1014144A - Small motor - Google Patents
Small motorInfo
- Publication number
- JPH1014144A JPH1014144A JP15936496A JP15936496A JPH1014144A JP H1014144 A JPH1014144 A JP H1014144A JP 15936496 A JP15936496 A JP 15936496A JP 15936496 A JP15936496 A JP 15936496A JP H1014144 A JPH1014144 A JP H1014144A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- cover
- rivet
- diameter
- fitting part
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、主として出力３０
０Ｗ以下の小形電動機に関し、さらに詳しくは、固定子
鉄心へのカバーの取り付け、および固定子鉄心の締めつ
け構成に関する。The present invention mainly relates to an output 30
More specifically, the present invention relates to a small electric motor of 0 W or less, more particularly, to attaching a cover to a stator core and tightening the stator core.
【０００２】[0002]
【従来の技術】従来、固定子鉄心の両面にリベットにて
カバーを固定する小形電動機は、実開昭５７−１４９６
４６号公報等に開示されている。図３は前記従来の小形
電動機の要部断面図であり、図示のようにコアシート１
２を積層してなる固定子鉄心１８の端部近くに孔径φＡ
の貫通孔１９を形成し、２個のカバー１５を前記固定子
鉄心１８の両面に当接し、カバー１５の外径φＨの嵌合
筒部１６を前記貫通孔１９に挿通し、かつ、リベット１
７の先端部をカシメてカバー１５を固定していた。2. Description of the Related Art Conventionally, a small motor in which a cover is fixed to both sides of a stator core with rivets is disclosed in Japanese Utility Model Laid-Open No. 57-1496.
No. 46, and the like. FIG. 3 is a cross-sectional view of a main part of the conventional small electric motor. As shown in FIG.
2 near the end of the stator core 18 formed by laminating
The cover 15 abuts on both surfaces of the stator core 18, the fitting cylindrical portion 16 having an outer diameter φH of the cover 15 is inserted through the through hole 19, and the rivet 1 is formed.
The cover 15 was fixed by caulking the tip of the cover 7.
【０００３】[0003]
【発明が解決しようとする課題】前記従来の小形電動機
においては、貫通孔１９は全長にわたり孔径φＡであ
る。したがって、孔径φＡの貫通孔１９は、カバー１５
の外径φＨの嵌合筒部１６によって制限を受け、リベッ
ト１７と貫通孔１９とのクリアランス（図示せず）が
０．６ｍｍあるために、リベット１７が貫通孔１９の中
で座屈してカシメ代が少なくなり、カシメ不足が発生
し、カバー１５のビビリによる騒音や振動の要因にもな
っていた。In the above-mentioned conventional small motor, the through hole 19 has a diameter φA over the entire length. Therefore, the through hole 19 having the hole diameter φA is
Is restricted by the fitting cylindrical portion 16 having an outer diameter φH, and the clearance (not shown) between the rivet 17 and the through-hole 19 is 0.6 mm, so that the rivet 17 buckles in the through-hole 19 and is caulked. The cost was reduced, and the caulking shortage occurred, causing noise and vibration due to chattering of the cover 15.
【０００４】前記リベット１７の座屈の対策としては、
カシメ力が小さくて済む中空リベットの使用、あるいは
リベットの材料硬度を徹底管理することが考えられる
が、これらは小形電動機組立て工程の自動化や、材料品
質管理を困難にし、さらにはコストアップとなるため実
現が難しく、構造的にリベットの座屈を防ぐことが課題
となっていた。[0004] As a countermeasure against buckling of the rivet 17,
It is conceivable to use hollow rivets that require only a small caulking force or to thoroughly control the material hardness of the rivets.However, this makes it difficult to automate the assembly process of small electric motors and control the quality of the material, and further increases the cost. It was difficult to realize, and structurally preventing buckling of the rivet was an issue.
【０００５】本発明は前記従来の問題に留意し、カバー
を固定するリベットの座屈を防止する小形電動機を提供
することを目的とする。An object of the present invention is to provide a small-sized electric motor that prevents buckling of a rivet for fixing a cover, while taking the above conventional problems into consideration.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に本発明は、固定子鉄心がカバーとの位置決めとリベッ
トのカシメ用を兼ねた貫通孔を有した小形電動機の構成
であって、前記貫通孔におけるカバーの嵌合筒部が嵌合
する部分より内奥の孔径を小さくして貫通孔に段差を形
成した構成とする。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a small-sized motor having a through hole in which a stator core is used for positioning with a cover and for caulking rivets. The through hole has a configuration in which a step diameter is formed in the through hole by making the diameter of the hole deeper than the portion where the fitting cylindrical portion of the cover fits.
【０００７】この本発明によれば、リベットが貫通孔内
で座屈することがなく、カシメ代不足によるカシメ不良
を防止できる小形電動機が得られる。According to the present invention, it is possible to obtain a small electric motor which can prevent the rivet from buckling in the through hole and prevent a crimping failure due to insufficient crimping allowance.
【０００８】[0008]
【発明の実施の形態】本発明の請求項１に記載の発明
は、端部近くに貫通孔を形成し、両面にカバーを当接
し、前記カバーに設けたの嵌合筒部を前記貫通孔に嵌合
し、前記嵌合筒部と前記貫通孔にリベットを挿通し、か
つ、リベットをカシメる構成であって、前記貫通孔の嵌
合筒部が嵌合する部分の孔径に対し、内奥部の孔径を小
さくして、貫通孔に段差を形成した小形電動機であり、
リベットと貫通孔とのクリアランスを小さくしてリベッ
トの座屈を防ぐという作用を有する。DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, a through hole is formed near an end portion, a cover is abutted on both sides, and a fitting cylindrical portion provided on the cover is connected to the through hole. And a rivet is inserted through the fitting cylinder and the through-hole, and the rivet is caulked, and the inner diameter is smaller than a hole diameter of a portion where the fitting cylinder of the through-hole is fitted. A small electric motor with a small hole diameter at the back and a step formed in the through hole.
This has the effect of reducing the clearance between the rivet and the through hole to prevent buckling of the rivet.
【０００９】以下、本発明の実施の形態の小形電動機に
ついて、図面を参照して説明する。 （実施の形態１）図１は本発明の実施の形態１の小形電
動機の断面図、図２は同小形電動機の要部断面図であ
る。Hereinafter, a small motor according to an embodiment of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is a sectional view of a small electric motor according to Embodiment 1 of the present invention, and FIG. 2 is a sectional view of a main part of the small electric motor.
【００１０】図示のように固定子鉄心１はコアシート２
およびコアシート３を積層して構成され、その端部近く
に貫通孔４を形成している。カバー５は前記貫通孔４に
嵌合してカバー５の位置決めとリベット止めに供する嵌
合筒部６を有し、前記嵌合筒部６と貫通孔４に貫通した
リベット７の先端をカシメることでカバー５が固定子鉄
心１の側面に固定される。As shown in the figure, a stator core 1 is a core sheet 2
And a core sheet 3 are laminated, and a through hole 4 is formed near the end. The cover 5 has a fitting cylinder 6 that fits into the through-hole 4 and serves for positioning of the cover 5 and riveting. The tip of the rivet 7 penetrating the fitting cylinder 6 and the through-hole 4 is caulked. As a result, the cover 5 is fixed to the side surface of the stator core 1.
【００１１】本実施の形態１においては、前記貫通孔４
に特徴を有している。前記貫通孔４は、詳しくは孔径φ
Ａの貫通孔をもつコアシート２を、カバー５の外径φＨ
をもつ嵌合筒部６の長さＢ以上の積厚Ｃだけ数枚積層し
た後、さらにその上にリベット７の軸径φＤより大き
く、かつ、前記孔径φＡより小さい孔径φＥの貫通孔を
もつコアシート３を積厚Ｆだけ数枚積層し、さらにその
上に前記と同様に孔径φＡの貫通孔をもつコアシート２
を、カバー５の嵌合筒部６の長さＢ以上の積厚Ｇだけ数
枚積層して形成する。In the first embodiment, the through hole 4
It has features. The through hole 4 has a hole diameter φ
A. The core sheet 2 having the through hole of A
After stacking several pieces having a stack thickness C equal to or greater than the length B of the fitting cylindrical portion 6 having a through hole, a through hole having a diameter φE larger than the shaft diameter φD of the rivet 7 and smaller than the hole diameter φA is further provided thereon. A plurality of core sheets 3 each having a stack thickness F are laminated, and a core sheet 2 having a through-hole having a hole diameter φA thereon as described above.
Are laminated by a stack thickness G equal to or greater than the length B of the fitting cylindrical portion 6 of the cover 5.
【００１２】つぎにカバー５の取り付けについて説明す
る。まず、固定子鉄心１の両面に、それぞれカバー５を
その嵌合筒部６が貫通孔４に嵌合するように当接し、そ
の後、軸径φＤのリベット７を一方のカバー５の嵌合筒
部６−貫通孔４−他方のカバー５の嵌合筒部６に貫通さ
せ、最後にリベット７の先端をカシメてカバー５を取り
付け、かつ、固定子鉄心１を締めつける。Next, attachment of the cover 5 will be described. First, the cover 5 is brought into contact with both surfaces of the stator core 1 such that the fitting tube portion 6 is fitted into the through hole 4, and then a rivet 7 having a shaft diameter φD is fitted to the fitting tube of the one cover 5. The part 6 is penetrated into the through hole 4 through the fitting cylinder part 6 of the other cover 5, and finally, the cover 5 is attached by caulking the tip of the rivet 7, and the stator core 1 is tightened.
【００１３】ここで、貫通孔４の孔径φＥは、カバー５
の外径φＨをもつ嵌合筒部６によって制限を受けないた
め、リベット７の軸径φＤのみ考慮すればよく、リベッ
ト７と貫通孔４とのクリアランスＩは０．２ｍｍに狭め
ることができる。したがってリベット７が貫通孔４の中
で座屈することがなく、カシメ代不足によるカシメ不良
を防止することができ、小形電動機の組立て工程におけ
る歩留まりの向上が可能となる。Here, the hole diameter φE of the through hole 4 is
Is not restricted by the fitting cylindrical portion 6 having the outer diameter φH, only the shaft diameter φD of the rivet 7 needs to be considered, and the clearance I between the rivet 7 and the through hole 4 can be reduced to 0.2 mm. Therefore, the rivet 7 does not buckle in the through hole 4, and it is possible to prevent a crimping failure due to a shortage of a crimping allowance, and it is possible to improve the yield in the assembly process of the small electric motor.
【００１４】なお、前記実施の形態において、コアシー
ト２の積厚Ｃ、Ｇは必ずしも同じである必要はなく、貫
通孔４の内部に段差が３つ以上あってもよい。In the above embodiment, the stack thicknesses C and G of the core sheet 2 do not necessarily have to be the same, and three or more steps may be provided inside the through hole 4.
【００１５】[0015]
【発明の効果】以上の説明より明らかなように、本発明
によれば、固定子鉄心におけるカバーとの位置決めとリ
ベットのカシメ用を兼ねた貫通孔が、カバーの嵌合筒部
との嵌合部より内奥部の孔径を、前記嵌合部の孔径より
も小さくして段差をもっているので、リベットと貫通孔
とのクリアランスを狭め、リベットの貫通孔内における
座屈をなくしてカシメ代不足によるカシメ不良を防止す
るという優れた小形電動機を得ることができる。As is apparent from the above description, according to the present invention, the through hole for positioning the cover of the stator core with the cover and for crimping the rivet is fitted to the fitting cylindrical portion of the cover. Since the hole diameter at the inner part of the rivet is smaller than the hole diameter of the fitting part and has a step, the clearance between the rivet and the through hole is narrowed, buckling in the through hole of the rivet is eliminated, and the crimping margin is insufficient. It is possible to obtain an excellent small-sized electric motor that prevents crimping failure.
【図１】本発明の実施の形態１の小形電動機の断面図FIG. 1 is a cross-sectional view of a small electric motor according to a first embodiment of the present invention.
【図２】同小形電動機の要部断面図FIG. 2 is a sectional view of an essential part of the small electric motor.
【図３】従来の小形電動機の要部断面図FIG. 3 is a sectional view of a main part of a conventional small motor.
１ 固定子鉄心 ２ コアシート ３ コアシート ４ 貫通孔 ５ カバー ６ 嵌合筒部 ７ リベット DESCRIPTION OF SYMBOLS 1 Stator core 2 Core sheet 3 Core sheet 4 Through hole 5 Cover 6 Fitting cylinder part 7 Rivet
Claims (1)
を当接し、前記カバーに設けたの嵌合筒部を前記貫通孔
に嵌合し、前記嵌合筒部と前記貫通孔にリベットを挿通
し、かつ、リベットをカシメる構成であって、前記貫通
孔の嵌合筒部が嵌合する部分の孔径に対し、内奥部の孔
径を小さくして貫通孔に段差を形成したことを特徴とす
る小形電動機。1. A through hole is formed near an end portion, a cover abuts on both sides, a fitting cylinder portion provided on the cover is fitted into the through hole, and the fitting cylinder portion and the through hole are fitted. A rivet is inserted through the rivet, and the rivet is swaged, and a step is formed in the through-hole by making the hole diameter of the inner deep portion smaller than the hole diameter of the portion where the fitting cylindrical portion of the through-hole is fitted. A small electric motor characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15936496A JPH1014144A (en) | 1996-06-20 | 1996-06-20 | Small motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15936496A JPH1014144A (en) | 1996-06-20 | 1996-06-20 | Small motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1014144A true JPH1014144A (en) | 1998-01-16 |
Family
ID=15692232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15936496A Pending JPH1014144A (en) | 1996-06-20 | 1996-06-20 | Small motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1014144A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010172164A (en) * | 2009-01-26 | 2010-08-05 | Tamagawa Seiki Co Ltd | Structure of resolver stator |
| WO2012060191A1 (en) * | 2010-11-04 | 2012-05-10 | アイシン精機株式会社 | Rotor of electric motor and manufacturing method thereof |
-
1996
- 1996-06-20 JP JP15936496A patent/JPH1014144A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010172164A (en) * | 2009-01-26 | 2010-08-05 | Tamagawa Seiki Co Ltd | Structure of resolver stator |
| WO2012060191A1 (en) * | 2010-11-04 | 2012-05-10 | アイシン精機株式会社 | Rotor of electric motor and manufacturing method thereof |
| JPWO2012060191A1 (en) * | 2010-11-04 | 2014-05-12 | アイシン精機株式会社 | Electric motor rotor and method of manufacturing the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20040629 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040706 |
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| A02 | Decision of refusal |
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