JPH1070860A - Motor case for small-sized motor - Google Patents
Motor case for small-sized motorInfo
- Publication number
- JPH1070860A JPH1070860A JP8226208A JP22620896A JPH1070860A JP H1070860 A JPH1070860 A JP H1070860A JP 8226208 A JP8226208 A JP 8226208A JP 22620896 A JP22620896 A JP 22620896A JP H1070860 A JPH1070860 A JP H1070860A
- Authority
- JP
- Japan
- Prior art keywords
- motor case
- motor
- corner
- small
- deep drawing
- 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.)
- Granted
Links
Landscapes
- Motor Or Generator Frames (AREA)
- Manufacture Of Motors, Generators (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、例えばシェーバの
ような小型回転電機等に使用される小型モータ用モータ
ケースに関するものであり、特にメッキ鉄板または通常
の鉄板の深絞り加工により横断面輪郭形状が少なくとも
1組の平行直線を含み、かつ角隅部を有する有底中空筒
状に形成されると共に、開口部にモータケース蓋を位置
決め固着するための段付部を備えた小型モータ用モータ
ケースに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor case for a small motor used for a small rotating electric machine such as a shaver, and more particularly to a cross-sectional profile formed by deep drawing of a plated iron plate or a normal iron plate. Is formed in a hollow cylindrical shape having at least one set of parallel straight lines and having corners, and has a stepped portion for positioning and fixing a motor case lid in an opening. It is about.
【0002】[0002]
【従来の技術】図6は本発明の対象である小型モータの
例を示す要部縦断面図である。図6において、1はモー
タケースであり、例えば軟鉄のような金属材料により有
底中空筒状に形成され、その内周面に例えばアークセグ
メント状に形成された永久磁石2を固着して固定子を形
成する。次に3はモータケース蓋であり、例えば熱可塑
性樹脂材料または熱可塑性材料と金属材料の組合せによ
って、前記モータケース1の開口部に嵌着固定され得る
ように形成されている。2. Description of the Related Art FIG. 6 is a longitudinal sectional view of an essential part showing an example of a small motor to which the present invention is applied. In FIG. 6, reference numeral 1 denotes a motor case, which is formed of a metal material such as soft iron in a hollow cylindrical shape with a bottom, and a permanent magnet 2 formed in the shape of an arc segment, for example, is fixed to an inner peripheral surface of the stator. To form Next, reference numeral 3 denotes a motor case lid, which is formed by, for example, a thermoplastic resin material or a combination of a thermoplastic material and a metal material so as to be fitted and fixed to the opening of the motor case 1.
【0003】次に4は回転子であり、前記永久磁石2に
対向する電機子5と整流子6とからなり、各々モータケ
ース1とモータケース蓋3とに設けられた軸受7,8に
よって回転可能に支持されている。Reference numeral 4 denotes a rotor, which comprises an armature 5 and a commutator 6 facing the permanent magnet 2 and is rotated by bearings 7 and 8 provided on the motor case 1 and the motor case lid 3, respectively. Supported as possible.
【0004】9はブラシアームであり、例えば銅若しく
は銅合金のような導電材料により帯板状に形成され、前
記整流子6と摺動係合されるブラシ10を備え、モータ
ケース蓋3内に設けられている。なおモータケース蓋3
内には、前記ブラシアーム9と電気的に接続されてなる
ターミナル11が設けられており、外部直流電源からブ
ラシアーム9、ブラシ10、整流子6を介して電機子5
に給電可能に構成されている。Reference numeral 9 denotes a brush arm, which is formed in a strip shape from a conductive material such as copper or a copper alloy and includes a brush 10 which is slidably engaged with the commutator 6. Is provided. Motor case cover 3
A terminal 11 which is electrically connected to the brush arm 9 is provided therein. The armature 5 is supplied from an external DC power supply via the brush arm 9, the brush 10, and the commutator 6.
Is configured to be able to supply power to the power supply.
【0005】上記の構成により、電機子5に電流が供給
されると、モータケース1の内周面に固着された永久磁
石2によって形成されている磁界中に存在する電機子5
に回転力が付与されるから、回転子4を回転させること
ができ、回転子4と連結されてなる各種機器を駆動させ
ることができるのである。With the above configuration, when a current is supplied to the armature 5, the armature 5 existing in the magnetic field formed by the permanent magnet 2 fixed to the inner peripheral surface of the motor case 1.
, The rotor 4 can be rotated, and various devices connected to the rotor 4 can be driven.
【0006】図7は図6におけるモータケース1とモー
タケース蓋3を示す要部斜視図である。図7において、
12は段付部であり、モータケース1の開口部に設けら
れ、モータケース1の軸線方向におけるモータケース蓋
3の位置決め固着のためのものである。なおモータケー
ス1は、メッキ鉄板の深絞り加工により、横断面形状が
1組の平行直線と例えば1組の同心円弧を含み、4個の
角隅部1aを有する有底中空筒状に形成されている。1
3はかしめ部であり、その肉厚寸法が本体部1bより小
に形成されており、モータケース蓋3をモータケース1
の開口部に嵌着位置決め後、かしめ加工によりモータケ
ース蓋3を固着するためのものである。FIG. 7 is a perspective view of a main part showing the motor case 1 and the motor case lid 3 in FIG. In FIG.
Reference numeral 12 denotes a stepped portion provided at an opening of the motor case 1 for positioning and fixing the motor case lid 3 in the axial direction of the motor case 1. The motor case 1 is formed by deep drawing of a plated iron plate into a bottomed hollow cylindrical shape having a cross section including a set of parallel straight lines and, for example, a set of concentric arcs and having four corners 1a. ing. 1
Reference numeral 3 denotes a caulking portion, the thickness of which is smaller than that of the main body portion 1b.
After the fitting is positioned in the opening, the motor case lid 3 is fixed by caulking.
【0007】上記のようなモータケース1を成形するに
は、例えば特公平6−1970号公報に記載されるよう
な深絞り加工によることができる。すなわち、所定寸法
の肉厚および直径を有する例えばメッキ鉄板または通常
の鉄板を打抜き加工によって準備し、この円板素材を椀
状に深絞り加工し、再絞り加工により、有底中空筒の深
さ寸法を順次増大させると共に、その内形寸法および肉
厚寸法を順次縮小することにより、図7に示されるよう
なモータケース1を成形するのである。In order to form the motor case 1 as described above, for example, deep drawing can be performed as described in Japanese Patent Publication No. Hei 6-1970. That is, for example, a plated iron plate or a normal iron plate having a predetermined thickness and diameter is prepared by punching, the disc material is deep drawn into a bowl shape, and the depth of the bottomed hollow cylinder is obtained by redrawing. The motor case 1 as shown in FIG. 7 is formed by sequentially increasing the dimensions and sequentially reducing the inner dimensions and the thickness dimensions.
【0008】図8はモータケース1の深絞り加工の例を
示す要部縦断面図である。図8において、21は上型ダ
イス、22は下型パンチであり、各々モータケース1の
外周面および内周面が形成されるような内周面および外
周面を備えており、軸線方向に相対移動可能に構成され
ている。23は拡径部であり、その外形寸法は前記図7
におけるかしめ部13の内形寸法と対応するように形成
されている。上記構成により、例えば下型パンチ22を
固定し、上型ダイス21を下降させれば、モータケース
1の成形が可能であり、拡径部23により、前記図7に
おけるかしめ部13および段付部12が成形され得る。FIG. 8 is a longitudinal sectional view of an essential part showing an example of deep drawing of the motor case 1. In FIG. 8, reference numeral 21 denotes an upper die, and 22 denotes a lower punch, each having an inner peripheral surface and an outer peripheral surface on which the outer peripheral surface and the inner peripheral surface of the motor case 1 are formed. It is configured to be movable. Reference numeral 23 denotes an enlarged diameter portion whose outer dimensions are as shown in FIG.
Are formed so as to correspond to the inner dimensions of the caulked portion 13 in FIG. According to the above configuration, for example, if the lower die punch 22 is fixed and the upper die 21 is lowered, the motor case 1 can be formed, and the caulked portion 13 and the stepped portion in FIG. 12 can be molded.
【0009】[0009]
【発明が解決しようとする課題】図8に示す深絞り加工
においては、モータケース1(素材)は軸線方向、すな
わち下方に延ばされると共に、軸線と直角方向、すなわ
ち軸線に向かって内方に押込まれるため、下型パンチ2
2の拡径部23の角縁部においてモータケース1の内周
面の一部が削り取られる結果、この部分にメッキかすお
よびバリが発生する。特に図7に示すように角隅部1a
を有するモータケース1の場合においては、これらの角
隅部1aでは他の部分と比較して鉄板の厚みが厚く、下
型パンチ22の段付角部への力も大であるため、上記の
メッキかすおよびバリが角隅部1aに集中する傾向が大
である。In the deep drawing shown in FIG. 8, the motor case 1 (raw material) is extended in the axial direction, that is, downward, and is pushed in a direction perpendicular to the axis, that is, inward toward the axis. To be rare, lower punch 2
As a result of a part of the inner peripheral surface of the motor case 1 being cut off at the corner portion of the second enlarged diameter portion 23, plating residue and burrs are generated at this part. In particular, as shown in FIG.
In the case of the motor case 1 having the above, since the thickness of the iron plate is thicker at these corners 1a than the other portions and the force on the stepped corners of the lower die punch 22 is large, the plating There is a large tendency that burrs and burrs are concentrated on the corner 1a.
【0010】図9は深絞り成形後のモータケース1を下
型パンチ22から離型させる状態を示す要部縦断面図で
あり、同一部分は前記図7および図8と同一の参照符号
で示す。図9において、モータケース1を離型手段(図
示せず)によって上方に押上げた場合、モータケース1
の内周面は下型パンチ22の外周面と摺動状態であるた
め、段付部12と本体部1bとの境界近傍に前記のよう
にして発生したバリ14は、モータケース1の上昇によ
り下方に立ち込むこととなる。FIG. 9 is a vertical sectional view of a main part showing a state in which the motor case 1 after deep drawing is released from the lower punch 22. The same parts are denoted by the same reference numerals as those in FIGS. 7 and 8. . In FIG. 9, when the motor case 1 is pushed upward by a releasing means (not shown),
Of the lower die punch 22 is in a sliding state with the outer peripheral surface of the lower die 22, and the burr 14 generated as described above near the boundary between the stepped portion 12 and the main body portion 1 b is caused by the rise of the motor case 1. You will be standing down.
【0011】上記のように深絞り加工に伴うバリ等が発
生すると、小型モータ組立後においてその一部若しくは
全部が剥離脱落して小型モータの内部空間に侵入し、回
転不良の原因となる他、図6および図7に示すモータケ
ース蓋3を位置決め固着する際の精度を低下させ、小型
モータの機能を低下させるという問題点がある。When burrs or the like are generated due to deep drawing as described above, part or all of the burrs are peeled off and detached after assembling the small motor and enter the internal space of the small motor, causing a rotation failure. There is a problem that accuracy in positioning and fixing the motor case lid 3 shown in FIGS. 6 and 7 is reduced, and the function of the small motor is reduced.
【0012】一方モータケース1の成形後において、前
記バリ等を除去するための余剰の後処理作業を行なう場
合には、煩雑な手作業が必要となり、製作コストを高騰
させるという問題点がある。On the other hand, when the post-processing work for removing the burrs and the like is performed after the molding of the motor case 1, complicated manual work is required, and there is a problem that the manufacturing cost is increased.
【0013】なおモータケース1を構成する材料とし
て、例えば通常の鉄板を使用すれば、上記深絞り加工に
おけるメッキかすの発生は回避できるが、なお若干のバ
リの発生を伴う。また、通常の鉄板は成形後のメッキ処
理作業、在庫鉄板素材の防錆対策が必要となるため、メ
ッキ鉄板を使用する場合と比較すると全体的にはコスト
高になる。そのため一般的にはメッキ鉄板が使用され
る。If a normal iron plate is used as a material for forming the motor case 1, for example, the generation of plating residue in the above-mentioned deep drawing can be avoided, but the burr still occurs. In addition, since a normal iron plate requires plating treatment after forming and measures to prevent rust of the stock iron plate material, the cost becomes higher as a whole as compared with the case where a plated iron plate is used. Therefore, a plated iron plate is generally used.
【0014】本発明は、上記従来技術に存在する問題点
を解決し、深絞り加工に伴うバリ等の発生を防止し、小
型モータとしての機能を確保すると共に、製作コストの
低減が可能である小型モータ用モータケースを提供する
ことを課題とする。The present invention solves the above-mentioned problems in the prior art, prevents the occurrence of burrs and the like due to deep drawing, secures the function as a small motor, and reduces the manufacturing cost. It is an object to provide a motor case for a small motor.
【0015】[0015]
【課題を解決するための手段】上記の課題を解決するた
めに、まず第1の発明においては、鉄板の深絞り加工に
より横断面輪郭形状が少なくとも1組の平行直線を含み
かつ角隅部を有する有底中空筒状に形成されると共に、
開口部にモータケース蓋を位置決め固着するための段付
部を備えてなる小型モータ用モータケースにおいて、段
付部と本体部との境界近傍における角隅部の肉厚寸法
を、本体部の角隅部の肉厚寸法より小に形成する、とい
う技術的手段を採用した。In order to solve the above-mentioned problems, first, in the first invention, the cross-sectional profile includes at least one set of parallel straight lines by deep drawing of an iron plate, and corners are formed. While having a bottomed hollow cylindrical shape having
In a motor case for a small motor having a stepped portion for positioning and fixing a motor case lid in an opening, a thickness dimension of a corner near a boundary between the stepped portion and the main body portion is determined by the corner of the main body portion. The technical means of forming smaller than the thickness of the corner is adopted.
【0016】上記の発明において、段付部と本体部との
境界近傍における角隅部に、開口部から奥部に向かって
肉厚寸法が漸増するような傾斜面を設けることができ
る。次に第2の発明においては、鉄板の深絞り加工によ
り横断面輪郭形状が少なくとも1組の平行直線を含みか
つ角隅部を有する有底中空筒状に形成されると共に、開
口部にモータケース蓋を位置決め固着するための段付部
を備えてなる小型モータ用モータケースにおいて、段付
部と本体部との境界の内周縁に半径0.1〜0.2mmの丸み
を形成する、という技術的手段を採用した。In the above invention, an inclined surface whose thickness gradually increases from the opening toward the back can be provided at the corner near the boundary between the stepped portion and the main body. Next, in the second invention, the deep cross-sectional shape of the iron plate is formed into a bottomed hollow cylindrical shape including at least one set of parallel straight lines and having corners by deep drawing, and a motor case is formed in the opening. In a motor case for a small motor having a stepped portion for positioning and fixing a lid, a technology of forming a roundness with a radius of 0.1 to 0.2 mm on an inner peripheral edge of a boundary between the stepped portion and the main body. Tactics were adopted.
【0017】上記の構成により、モータケースの深絞り
加工におけるメッキかすおよびバリの発生を防止するこ
とができる。またモータケースを下型パンチから離型す
る際におけるバリ等の立ち込み若しくは返りを防止し、
段付部の精度を確保することができる。With the above configuration, it is possible to prevent generation of plating residue and burrs in the deep drawing of the motor case. Also, when the motor case is released from the lower die punch, it prevents burrs or the like from getting up or returning,
Accuracy of the stepped portion can be ensured.
【0018】[0018]
【発明の実施の形態】図1は本発明の実施の形態を示す
要部斜視図であり、同一部分は前記図7と同一の参照符
号で示す。図1において、15は傾斜面であり、モータ
ケース1の段付部12と本体部1bとの境界近傍の角隅
部1aに、開口部から奥部に向かって肉厚寸法が漸増す
るように形成する。FIG. 1 is a perspective view showing a main part of an embodiment of the present invention, and the same parts are denoted by the same reference numerals as in FIG. In FIG. 1, reference numeral 15 denotes an inclined surface, which is provided at a corner 1a near the boundary between the stepped portion 12 of the motor case 1 and the main body 1b so that the wall thickness gradually increases from the opening toward the back. Form.
【0019】図2は図1における段付部12および傾斜
面15の近傍を示す要部拡大縦断面図である。図2にお
いて、θは傾斜面15の軸線に対する傾斜角、bは段付
部12の軸線と直角方向の幅寸法である。図2におい
て、傾斜角θは2°〜15°とするのが好ましい。この
傾斜角θが15°を超えると、図1に示す角隅部1aに
おける素材の絞り量が多くなり、前記従来のものと同様
の不都合が生ずることと、深絞り加工後のモータケース
1を加工治具に取付ける際の位置決めガイド作用が小さ
くなるため好ましくない。一方傾斜角θが2°未満であ
ると傾斜面が長くなり、前記図6に示すようにモータケ
ース1の内周面に固着する永久磁石2との間に隙間を生
ずるため不都合である。FIG. 2 is an enlarged longitudinal sectional view showing the vicinity of the stepped portion 12 and the inclined surface 15 in FIG. In FIG. 2, θ is the inclination angle with respect to the axis of the inclined surface 15, and b is the width dimension in the direction perpendicular to the axis of the stepped portion 12. In FIG. 2, the inclination angle θ is preferably set to 2 ° to 15 °. When the inclination angle θ exceeds 15 °, the amount of drawing of the material at the corner 1 a shown in FIG. 1 increases, causing the same disadvantages as the conventional one. It is not preferable because the positioning guide action when attaching to the processing jig becomes small. On the other hand, if the inclination angle θ is less than 2 °, the inclined surface becomes long, which is disadvantageous because a gap is formed between the inclined surface and the permanent magnet 2 fixed to the inner peripheral surface of the motor case 1 as shown in FIG.
【0020】次に段付部12の幅寸法bは0.15mm以下
に形成するのが好ましい。すなわち幅寸法bが0.15mm
を超えると、素材の絞り量が多くなるため不都合であ
る。本発明においては、段付部12と本体部1bとの境
界近傍における角隅部1aの肉厚寸法を、本体部1bの
角隅部1aの肉厚寸法より小に形成することにより、角
隅部1aにおけるメッキかすおよびバリの発生を回避し
ようとするものである。従って、上記境界近傍に前記の
ような傾斜面15を形成する他に、図2に鎖線で示すよ
うな肉薄部16を形成しても、前記と同様の効果が得ら
れる。Next, the width dimension b of the stepped portion 12 is preferably formed to be 0.15 mm or less. That is, the width dimension b is 0.15 mm
If the number exceeds the limit, the amount of material squeezing increases, which is disadvantageous. In the present invention, the thickness of the corner 1a near the boundary between the stepped portion 12 and the main body 1b is made smaller than the thickness of the corner 1a of the main body 1b. The purpose is to avoid generation of plating residue and burrs in the portion 1a. Therefore, in addition to forming the above-described inclined surface 15 in the vicinity of the boundary, the same effect as described above can be obtained by forming a thin portion 16 as shown by a chain line in FIG.
【0021】図3は図1における角隅部1a以外の段付
部12の近傍を示す要部拡大縦断面図である。図3にお
いて、段付部12と本体部1bとの境界の内周縁に半径
Rの丸みを形成し、この半径Rは0.1〜0.2mmとするの
が好ましい。本発明において、モータケース1の角隅部
1a以外の部位では、深絞り加工におけるモータケース
1の下型パンチ22(図8および図9参照)外周面への
食い付きが少ない。FIG. 3 is an enlarged longitudinal sectional view of a main part showing the vicinity of the stepped portion 12 other than the corner 1a in FIG. In FIG. 3, a rounded portion having a radius R is formed at an inner peripheral edge of a boundary between the stepped portion 12 and the main body portion 1b, and the radius R is preferably set to 0.1 to 0.2 mm. In the present invention, the lower case punch 22 (see FIGS. 8 and 9) of the motor case 1 does not bite into the outer peripheral surface of the motor case 1 other than the corner 1a in deep drawing.
【0022】そして上記半径Rを0.1〜0.2mmに形成す
ることにより、深絞り加工によって絞られ、かつ押出さ
れる素材表面のメッキかすおよびバリ等が先鋭化せず、
丸められることにより、モータケース1の表面からの剥
離脱落が防止され得るのである。上記丸みの半径Rが0.
1mm未満であると、バリ等の丸め作用が期待できず、一
方半径Rが0.2mmを超えると、段付部12の実質的な幅
寸法b(図2参照)を確保できないため好ましくない。By forming the radius R in the range of 0.1 to 0.2 mm, the plating residue and burrs on the surface of the material which is drawn by deep drawing and extruded are not sharpened.
By being rounded, peeling and falling off from the surface of the motor case 1 can be prevented. The radius R of the roundness is 0.
If it is less than 1 mm, the rounding action of burrs or the like cannot be expected, while if the radius R exceeds 0.2 mm, the substantial width dimension b (see FIG. 2) of the stepped portion 12 cannot be secured, which is not preferable.
【0023】図4は本発明の実施の形態における深絞り
加工状態を示す要部縦断面図であり、同一部分は前記図
8と同一の参照符号で示す。図4において、24は傾斜
部であり、前記図1および図2に示すモータケース1の
角隅部1aにおける傾斜面15を形成すべき部位であ
り、下型パンチ22の拡径部23と本体部22aとの境
界近傍に設けられている。FIG. 4 is a longitudinal sectional view of a main part showing a state of deep drawing according to the embodiment of the present invention, and the same parts are denoted by the same reference numerals as in FIG. In FIG. 4, reference numeral 24 denotes an inclined portion, which is a portion where the inclined surface 15 is to be formed at the corner 1a of the motor case 1 shown in FIGS. It is provided near the boundary with the portion 22a.
【0024】上記の構成により、深絞り加工の際に傾斜
部24の近傍においては、モータケース1(素材)は軸
線方向にはδ寸法のみ押込まれるに留まり、前記図8に
おけるものより小であり、従ってメッキかすおよびバリ
の発生量が少なくなるのである。With the above configuration, in the vicinity of the inclined portion 24 at the time of deep drawing, the motor case 1 (material) is pushed only in the dimension δ in the axial direction, and is smaller than that shown in FIG. Thus, the amount of plating residue and burrs is reduced.
【0025】図5は本発明の実施の形態における深絞り
成形後のモータケース1を下型パンチ22から離型させ
る状態を示す要部縦断面図であり、同一部分は前記図2
および図4と同一の参照符号で示す。図5において、モ
ータケース1の段付部12と本体部1bとの境界近傍の
角隅部1aには、前記図4に示す傾斜部24によって傾
斜面15が形成されている。従ってモータケース1を離
型手段(図示せず)によって上方に押上げた場合におい
ても、下型パンチ22の外周面とモータケース1の傾斜
面15とは当接していないため、前記図9におけるよう
なバリ14が立ち込むことがないのである。FIG. 5 is a vertical sectional view of a main part showing a state in which the motor case 1 after deep drawing is released from the lower punch 22 in the embodiment of the present invention.
And the same reference numerals as in FIG. In FIG. 5, an inclined surface 15 is formed at the corner 1a near the boundary between the stepped portion 12 and the main body 1b of the motor case 1 by the inclined portion 24 shown in FIG. Therefore, even when the motor case 1 is pushed upward by the releasing means (not shown), the outer peripheral surface of the lower die punch 22 does not abut on the inclined surface 15 of the motor case 1, and therefore, in FIG. Such burrs 14 do not enter.
【0026】上記の実施の形態においては、モータケー
ス1の横断面形状が1組の平行直線と1組の同心円弧を
含むものについて記述したが、横断面形状が四辺形状の
ものであってもよく、本発明は要するに1組の平行直線
を含み、かつ角隅部を有する有底中空筒状のモータケー
スに適用可能である。In the above-described embodiment, the case where the cross-sectional shape of the motor case 1 includes one set of parallel straight lines and one set of concentric arcs has been described, but the cross-sectional shape may be quadrilateral. In short, the present invention is applicable to a bottomed hollow cylindrical motor case including a set of parallel straight lines and having corners.
【0027】[0027]
【発明の効果】本発明は、以上記述するような構成およ
び作用であるから、下記の効果を奏し得る。Since the present invention has the above-described configuration and operation, the following effects can be obtained.
【0028】(1) 角隅部に本体部のそれより肉厚寸法の
小なる部位を有するため、深絞り加工におけるメッキか
すおよびバリの発生を大幅に減少させ得る。 (2) モータケース蓋を位置決めする段付部の寸法精度が
向上し、小型モータの性能を向上させ得る。(1) Since the corner portion has a portion having a smaller wall thickness than that of the main body portion, generation of plating residue and burrs in deep drawing can be greatly reduced. (2) The dimensional accuracy of the stepped portion for positioning the motor case lid is improved, and the performance of the small motor can be improved.
【0029】(3) 深絞り成形後における後処理作業が大
幅に減少されるため、製作コストを低減させ得る。(3) Since the post-processing work after deep drawing is greatly reduced, the production cost can be reduced.
【図1】本発明の実施の形態を示す要部斜視図である。FIG. 1 is a perspective view of a main part showing an embodiment of the present invention.
【図2】図1における段付部12および傾斜面15の近
傍を示す要部拡大縦断面図である。FIG. 2 is an enlarged vertical sectional view of a main part showing the vicinity of a stepped portion 12 and an inclined surface 15 in FIG.
【図3】図1における角隅部1a以外の段付部12の近
傍を示す要部拡大縦断面図である。FIG. 3 is an enlarged longitudinal sectional view of a main part showing the vicinity of a stepped portion 12 other than the corner 1a in FIG.
【図4】本発明の実施の形態における深絞り加工状態を
示す要部縦断面図である。FIG. 4 is a longitudinal sectional view of a main part showing a state of deep drawing in the embodiment of the present invention.
【図5】本発明の実施の形態における深絞り成形後のモ
ータケース1を下型パンチ22から離型させる状態を示
す要部縦断面図である。FIG. 5 is a longitudinal sectional view of a main part showing a state in which the motor case 1 after deep drawing is released from the lower die punch 22 in the embodiment of the present invention.
【図6】本発明の対象である小型モータの例を示す要部
縦断面図である。FIG. 6 is a vertical sectional view of a main part showing an example of a small motor to which the present invention is applied.
【図7】図6におけるモータケース1とモータケース蓋
3を示す要部斜視図である。FIG. 7 is a perspective view of a main part showing a motor case 1 and a motor case lid 3 in FIG. 6;
【図8】モータケース1の深絞り加工の例を示す要部縦
断面図である。FIG. 8 is a vertical sectional view of a main part showing an example of deep drawing of the motor case 1.
【図9】深絞り成形後のモータケース1を下型パンチ2
2から離型させる状態を示す要部縦断面図である。FIG. 9 shows a motor case 1 after deep drawing, and a lower die punch 2
It is a principal part longitudinal cross-sectional view which shows the state released from mold 2.
1 モータケース 1a 角隅部 1b 本体部 12 段付部 15 傾斜面 DESCRIPTION OF SYMBOLS 1 Motor case 1a Corner 1b Body 12 Stepped part 15 Inclined surface
───────────────────────────────────────────────────── フロントページの続き (72)発明者 目黒 賢次 千葉県印旛郡本埜村竜腹寺280番地 マブ チモーター株式会社技術センター内 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Kenji Meguro 280 Ryugoji Temple, Motono-mura, Inba-gun, Chiba Pref.
Claims (3)
が少なくとも1組の平行直線を含みかつ角隅部(1a)
を有する有底中空筒状に形成されると共に、開口部にモ
ータケース蓋(3)を位置決め固着するための段付部
(12)を備えてなる小型モータ用モータケースにおい
て、 段付部(12)と本体部(1b)との境界近傍における
角隅部(1a)の肉厚寸法を、本体部(1b)の角隅部
(1a)の肉厚寸法より小に形成したことを特徴とする
小型モータ用モータケース。1. A cross-sectional profile including at least one set of parallel straight lines formed by deep drawing of an iron plate, and a corner (1a).
A motor case for a small motor, which is formed in a hollow cylindrical shape with a bottom and has a stepped portion (12) for positioning and fixing the motor case lid (3) in the opening, The thickness of the corner (1a) near the boundary between the main body (1b) and the main body (1b) is smaller than the thickness of the corner (1a) of the main body (1b). Motor case for small motors.
界近傍における角隅部(1a)に、開口部から奥部に向
かって肉厚寸法が漸増するような傾斜面(15)を設け
たことを特徴とする請求項1記載の小型モータ用モータ
ケース。2. An inclined surface (15) whose wall thickness gradually increases from an opening to a depth in a corner (1a) near a boundary between a stepped portion (12) and a main body (1b). 2. The motor case for a small motor according to claim 1, further comprising:
が少なくとも1組の平行直線を含みかつ角隅部(1a)
を有する有底中空筒状に形成されると共に、開口部にモ
ータケース蓋(3)を位置決め固着するための段付部
(12)を備えてなる小型モータ用モータケースにおい
て、 段付部(12)と本体部(1b)との境界の内周縁に半
径0.1〜0.2mmの丸みを形成したことを特徴とする小型
モータ用モータケース。3. A cross-sectional profile including at least one set of parallel straight lines formed by deep drawing of an iron plate, and a corner (1a).
A motor case for a small motor, which is formed in a hollow cylindrical shape with a bottom and has a stepped portion (12) for positioning and fixing the motor case lid (3) in the opening, A motor case for a small motor, wherein a radius of a radius of 0.1 to 0.2 mm is formed on an inner peripheral edge of a boundary between the main body (1b) and the main body (1b).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22620896A JP3195246B2 (en) | 1996-08-28 | 1996-08-28 | Motor case for small motor |
CN 97117899 CN1104084C (en) | 1996-08-28 | 1997-08-28 | Motor case for miniature motors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22620896A JP3195246B2 (en) | 1996-08-28 | 1996-08-28 | Motor case for small motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH1070860A true JPH1070860A (en) | 1998-03-10 |
JP3195246B2 JP3195246B2 (en) | 2001-08-06 |
Family
ID=16841598
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22620896A Expired - Fee Related JP3195246B2 (en) | 1996-08-28 | 1996-08-28 | Motor case for small motor |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP3195246B2 (en) |
CN (1) | CN1104084C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101099961B1 (en) | 2010-01-26 | 2011-12-28 | 주식회사비.엠.씨 | ouble motorcase, and apparatus and method for manufacturing the same |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004328909A (en) | 2003-04-25 | 2004-11-18 | Nippon Densan Corp | Cylindrical part, its manufacturing method and motor using the same |
-
1996
- 1996-08-28 JP JP22620896A patent/JP3195246B2/en not_active Expired - Fee Related
-
1997
- 1997-08-28 CN CN 97117899 patent/CN1104084C/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101099961B1 (en) | 2010-01-26 | 2011-12-28 | 주식회사비.엠.씨 | ouble motorcase, and apparatus and method for manufacturing the same |
Also Published As
Publication number | Publication date |
---|---|
CN1176519A (en) | 1998-03-18 |
JP3195246B2 (en) | 2001-08-06 |
CN1104084C (en) | 2003-03-26 |
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