JPH0510527Y2 - - Google Patents
Info
- Publication number
- JPH0510527Y2 JPH0510527Y2 JP1662686U JP1662686U JPH0510527Y2 JP H0510527 Y2 JPH0510527 Y2 JP H0510527Y2 JP 1662686 U JP1662686 U JP 1662686U JP 1662686 U JP1662686 U JP 1662686U JP H0510527 Y2 JPH0510527 Y2 JP H0510527Y2
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- rotor magnet
- gate
- magnet
- face
- 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 - Lifetime
Links
- 239000002861 polymer material Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000012805 post-processing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 235000016496 Panda oleosa Nutrition 0.000 description 1
- 240000000220 Panda oleosa Species 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、電子時計の変換機に使用される小型
ステツプモーター等のロータ構造に関するもので
ある。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rotor structure for a small step motor or the like used in a converter for an electronic watch.
従来のロータ構造の要部断面図を第４図に示
す。図において、１１は高分子材料により複数個
のロータ磁石保持部１ａ及び柄部１ｂと共に一体
成形したロータカナ、１２はSmCO5等の高磁力
磁石よりなるロータ磁石、１３はゲートである。
この構造では、ロータの胴付面１４に受等の他部
品（図示せず）が配設されるので、ゲート１３の
残りが受等の他部品に接触しないように、ゲート
１３はロータ磁石保持部１ａの１つの上面部に設
けた凹部の内側に形成させて、ゲート１３が少し
でも胴付面１４の平面より離れるようにゲート１
３の位置を、ロータ磁石１２の上面１２ａとロー
タカナ胴付面１４との中間に設定していた。
FIG. 4 shows a cross-sectional view of main parts of a conventional rotor structure. In the figure, 11 is a rotor pinion integrally formed with a plurality of rotor magnet holding parts 1a and handle part 1b from a polymer material, 12 is a rotor magnet made of a high magnetic force magnet such as SmCO 5 , and 13 is a gate.
In this structure, other parts (not shown) such as a bridge are disposed on the rotor body mounting surface 14, so the gate 13 is used to hold the rotor magnet so that the rest of the gate 13 does not come into contact with other parts such as the bridge. The gate 1 is formed inside a recess provided in one upper surface of the portion 1a so that the gate 13 is as far away from the plane of the trunk mounting surface 14 as possible.
3 was set between the upper surface 12a of the rotor magnet 12 and the rotor pinion shell mounting surface 14.
通常高分子材料成形品のゲート位置は、高分子
材料の流れが良くすみずみまで行きわたり易い所
で、しかもゲート残りが多少あつても問題のない
所に設けるのが望ましい。特にゲート残りに関し
ては、時計用等の小型変換機のロータの場合、ト
ルクが低くわずかな過負荷でも止まることが多い
ことを考慮すると、ゲート残りが受等の他部品に
当らないようにすることが重要となる。よつて、
この対策としてゲートの大きさを小さくするか、
又はゲート残りを後加工でとり除く等の方法があ
るが、ゲートを小さくする方法は金型の加工上及
び補修等の制約で問題があつて難しく、又、ゲー
ト残りを後加工でとり除く方法は、工数がかかつ
てしまうという問題があつた。したがつて従来の
ようなロータ構造のゲート位置は、材料の流れが
いいようにできるだけ磁石から離れた所に設け、
しかもゲート残りが他の部品にあたらないように
ロータカナの胴付面より沈めて設けていた。つま
り、ゲートはロータ磁石と胴付面の中間に位置さ
せていた。ところが通常のロータは、ロータ磁石
の上面とロータカナ胴付面までの距離が少なかつ
たので、ロータカナ胴付面に有るロータ磁石保持
部１ａの厚みが薄くなり、ここに樹脂流入ゲート
を設けると樹脂の流れが悪くなると共に、ゲート
残りを極めて小さくすることが難しかつたので、
上述のどちらの条件も充分には満足させられなか
つた。
Normally, the gate position of a molded product made of polymeric material is preferably located where the polymeric material can flow well and easily reach every corner, and where there is no problem even if there is some remaining gate. In particular, regarding the gate residue, considering that the rotor of a small converter for watches etc. has low torque and often stops even with a slight overload, it is necessary to prevent the gate residue from hitting other parts such as bridges. becomes important. Then,
As a countermeasure, reduce the size of the gate,
Alternatively, there are methods such as removing the remaining gate by post-processing, but the method of reducing the gate size is difficult due to problems with mold processing and repair constraints, and the method of removing the remaining gate by post-processing is difficult. There was a problem that it took a lot of man-hours. Therefore, the gate position of the conventional rotor structure is placed as far away from the magnet as possible to ensure a good flow of material.
Moreover, the gate was set lower than the rotor pinion's body mounting surface to prevent the rest of the gate from hitting other parts. In other words, the gate was located between the rotor magnet and the shell mounting surface. However, in a normal rotor, the distance between the top surface of the rotor magnet and the rotor pinion body mounting surface is small, so the thickness of the rotor magnet holding portion 1a on the rotor pinion body mounting surface becomes thin, and if a resin inflow gate is provided here, the resin The flow of the gate became poor, and it was difficult to make the remaining gate area extremely small.
Neither of the above conditions could be fully satisfied.
本考案は上述のような従来の問題点を解消さ
せ、成形性がよく、且つゲート残りが従来のもの
より多少多く出ても他の部品にあたることがな
く、しかも後加工のいらない高品質のロータを提
供することを目的とする。 The present invention solves the above-mentioned conventional problems, and creates a high-quality rotor that has good moldability, does not hit other parts even if a little more gate residue than the conventional one comes out, and does not require post-processing. The purpose is to provide
上記の目的を達成させるために本考案は次のよ
うな構成をしている。すなわち、円柱状のロータ
磁石と、該ロータ磁石の端面に配置されるロータ
軸柄およびロータカナと、前記ロータ磁石の外周
を保持するように該ロータ磁石の一方の端面から
他方の端面に渡るように複数本配置されたロータ
磁石保持部とを有し、前記ロータ軸柄とロータカ
ナとロータ磁石保持部とを高分子材料にて一体成
形した変換機用ロータにおいて、前記ロータ磁石
保持部の少なくとも一つは、その上面が該ロータ
磁石の一方の端面と略同一面となるようにロータ
磁石の外周に沿つて張出した連通部を有してお
り、該連通部の上面には高分子材料を流入するた
めのゲートが連結するように構成したことを特徴
としている。
In order to achieve the above object, the present invention has the following configuration. That is, a cylindrical rotor magnet, a rotor shaft handle and a rotor pinion arranged on the end face of the rotor magnet, and a rotor shaft extending from one end face to the other end face of the rotor magnet so as to hold the outer periphery of the rotor magnet. In a converter rotor having a plurality of rotor magnet holding parts arranged, and in which the rotor shaft handle, rotor pinion, and rotor magnet holding part are integrally molded from a polymer material, at least one of the rotor magnet holding parts has a communicating portion extending along the outer periphery of the rotor magnet so that its upper surface is substantially flush with one end surface of the rotor magnet, and a polymeric material is introduced into the upper surface of the communicating portion. The feature is that the gates are connected to each other.
また前記ゲートはその一部が前記ロータ磁石の
一方の端面と対向してもよい。 Further, a portion of the gate may face one end surface of the rotor magnet.
以上の構造によりゲートの残り量が従来のもの
より多くても他の部品にあたることがなく、しか
も高分子材料がゲートから出てまつすぐ流れる部
分が長いため、成形性の良い高品質の製品が得ら
れる。又、ゲートの一部をロータ磁石の一方の端
面と対向させることにより見かけ上のゲートの大
きさを小さくできると共にゲートの残りも少なく
なる。
Due to the above structure, even if the remaining amount of the gate is larger than the conventional one, it will not hit other parts, and since the polymer material has a long part that flows directly after coming out of the gate, it is possible to produce high-quality products with good moldability. can get. Furthermore, by arranging a portion of the gate to face one end face of the rotor magnet, the apparent size of the gate can be reduced and the amount of remaining gate can be reduced.
以下に本考案の実施例を、図面に基づいて説明
する。
Embodiments of the present invention will be described below based on the drawings.
第１図は本考案の第１実施例を示すロータの平
面図で、第２図はその要部断面図を示す。図にお
いて、１は高分子材料によるロータ磁石保持部１
ａとロータ柄１ｂと共に一体成形したロータカ
ナ、２は希土類金属間化合物磁石等の高磁力磁石
で、例えばSmCO5よりなるロータ磁石、３は一
体成形時に高分子材料が流れ込むためのゲートを
示す。円柱状のロータ磁石２は、その端面に配置
されたロータほぞ１ｂおよびロータカナ１と、ロ
ータ磁石２の外周を保持するようにロータ磁石２
の一方の端面から他方の端面に渡るように複数本
配置されたロータ磁石保持部１ａとから保持され
て変換機のロータを構成している。そしてロータ
磁石保持部１ａの１本には、その上面がロータ磁
石２の端面と同一面となり、且つロータ磁石２の
外周に沿つて張出した連通部５を有し、この上面
にゲート３が連結するように構成されている。 FIG. 1 is a plan view of a rotor showing a first embodiment of the present invention, and FIG. 2 is a sectional view of a main part thereof. In the figure, 1 is a rotor magnet holding part 1 made of polymer material.
2 is a high magnetic force magnet such as a rare earth intermetallic compound magnet, for example, a rotor magnet made of SmCO 5. 3 is a gate through which a polymer material flows during integral molding. The cylindrical rotor magnet 2 has a rotor tenon 1b and a rotor pinion 1 arranged on its end face, and a rotor magnet 2 that holds the outer circumference of the rotor magnet 2.
A rotor of the converter is constituted by being held by a plurality of rotor magnet holding portions 1a arranged so as to extend from one end surface to the other end surface. One of the rotor magnet holding parts 1a has a communication part 5 whose upper surface is flush with the end face of the rotor magnet 2 and extends along the outer periphery of the rotor magnet 2, and the gate 3 is connected to this upper surface. is configured to do so.
上記構成によればゲート３は、ロータ磁石保持
部１ａの１つと連通し、ロータ磁石２の上面２ａ
とほぼ同一平面上で、且つロータ磁石２の外周２
ｂの外側の位置に形設されているので、胴付面４
を含む平面とゲート位置との距離を多くとること
ができ、且つ高分子材料がゲート３を出て最初に
比較的長いロータ磁石保持部１ａに流れ込んで行
き、すみずみまで均一に高分子材料を流し込め
る。 According to the above configuration, the gate 3 communicates with one of the rotor magnet holding parts 1a, and the upper surface 2a of the rotor magnet 2.
on the same plane as the outer periphery 2 of the rotor magnet 2
Since it is formed at the outside position of b, the body mounting surface 4
The distance between the gate position and a plane including Can be poured.
さらに第３図は本考案の第２実施例を示すロー
タの要部断面図である。尚、第１実施例と同一構
成要素については同一番号を付して説明は省略す
る。第２実施例ではロータの回転軸方向における
ゲート３の位置は、ロータ磁石２の上面２ａとほ
ぼ同一平面上の位置で且つ、ゲート３の一部がロ
ータ磁石２の外周２ｂと重なる位置に設けられて
いる。こうすることにより、ゲート残りの見かけ
上の大きさを小さくできる。尚、本実施例では３
本のロータ磁石保持部１ａのうち、１本にのみ連
通部を設けたが、高分子材料は金属に比べて極め
て軽いので、回転バランスに対しては問題になら
ない。 Furthermore, FIG. 3 is a sectional view of the main part of a rotor showing a second embodiment of the present invention. It should be noted that the same components as those in the first embodiment are given the same numbers and the description thereof will be omitted. In the second embodiment, the position of the gate 3 in the rotational axis direction of the rotor is provided at a position substantially on the same plane as the upper surface 2a of the rotor magnet 2, and at a position where a part of the gate 3 overlaps the outer periphery 2b of the rotor magnet 2. It is being By doing so, the apparent size of the remaining gate can be reduced. In this example, 3
Although only one of the rotor magnet holding parts 1a is provided with a communication part, this does not pose a problem for rotational balance because polymeric material is extremely light compared to metal.
以上の説明したところにより明らかな如く、ロ
ータの回転軸方向におけるゲートの位置をロータ
磁石の上面と同一平面上に設け、且つ平面的なゲ
ート位置をロータ磁石の外周の外側に、若しくは
ゲートの一部をロータ磁石の外周に重なる如く配
すことにより、ゲート残りが従来のものより多少
多く出ても、受等の他部品に接触するという品質
上の問題がなくなり、後加工を省くことができ、
また高分子材料はゲート３を出て最初に比較的長
いロータ磁石保持部１ａに流れ込むので、樹脂は
全体に均一に流れ込み成形性の良いものが得られ
る。しかも、平面的なゲート位置をロータ磁石の
外周と一部重なるように配した場合には、ゲート
残りも少なくなり一層の効果を上げることができ
る。
As is clear from the above explanation, the position of the gate in the direction of the rotational axis of the rotor is provided on the same plane as the upper surface of the rotor magnet, and the planar gate position is placed outside the outer periphery of the rotor magnet or on the same plane as the gate. By arranging the gate so that it overlaps the outer periphery of the rotor magnet, even if there is a little more gate residue than in the conventional case, there will be no quality problems such as contact with other parts such as the bridge, and post-processing can be omitted. ,
Furthermore, since the polymer material exits the gate 3 and first flows into the relatively long rotor magnet holding portion 1a, the resin flows uniformly throughout the entire rotor magnet holding portion 1a, resulting in a product with good moldability. Moreover, if the planar gate position is arranged so as to partially overlap the outer periphery of the rotor magnet, the remaining gates will be reduced and the effect can be further improved.
第１図は本考案の第１実施例を示すロータの平
面図、第２図は第１図の要部断面図、第３図は本
考案の第２実施例を示すロータの平面図、第４図
は従来の構造を示すロータの要部断面図である。
１……ロータカナ、２……ロータ磁石、３……
ゲート。
FIG. 1 is a plan view of a rotor showing a first embodiment of the present invention, FIG. 2 is a sectional view of the main part of FIG. 1, and FIG. FIG. 4 is a sectional view of a main part of a rotor showing a conventional structure. 1...Rotor kana, 2...Rotor magnet, 3...
Gate.
Claims (1)
に配置されるロータ軸柄およびロータカナと、
前記ロータ磁石の外周を保持するように該ロー
タ磁石の一方の端面から他方の端面に渡るよう
に複数本配置されたロータ磁石保持部とを有
し、前記ロータ軸柄とロータカナとロータ磁石
保持部とを高分子材料にて一体成形した変換機
用ロータにおいて、前記ロータ磁石保持部の少
なくとも一つは、その上面が該ロータ磁石の一
方の端面と略同一面となるようにロータ磁石の
外周に沿つて張出した連通部を有しており、該
連通部の上面には高分子材料を流入するための
ゲートが連結するように構成したことを特徴と
する変換機用のロータ構造。 (2) 前記ゲートはその一部が前記ロータ磁石の一
方の端面と対向することを特徴とする実用新案
登録請求の範囲第１項記載の変換機用のロータ
構造。[Scope of Claim for Utility Model Registration] (1) A cylindrical rotor magnet, a rotor shaft handle and a rotor pinion arranged on the end face of the rotor magnet,
a plurality of rotor magnet holding parts arranged from one end face to the other end face of the rotor magnet so as to hold the outer periphery of the rotor magnet, the rotor shaft handle, the rotor pinion, and the rotor magnet holding part; and a rotor for a converter integrally molded from a polymeric material, at least one of the rotor magnet holding parts is attached to the outer periphery of the rotor magnet so that its upper surface is substantially flush with one end face of the rotor magnet. 1. A rotor structure for a converter, characterized in that the rotor structure has a communicating section extending along the longitudinal direction, and is configured such that a gate for introducing a polymer material is connected to the upper surface of the communicating section. (2) The rotor structure for a converter according to claim 1, wherein a portion of the gate faces one end surface of the rotor magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1662686U JPH0510527Y2 (en) | 1986-02-07 | 1986-02-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1662686U JPH0510527Y2 (en) | 1986-02-07 | 1986-02-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62129277U JPS62129277U (en) | 1987-08-15 |
| JPH0510527Y2 true JPH0510527Y2 (en) | 1993-03-15 |
Family
ID=30808655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1662686U Expired - Lifetime JPH0510527Y2 (en) | 1986-02-07 | 1986-02-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0510527Y2 (en) |
-
1986
- 1986-02-07 JP JP1662686U patent/JPH0510527Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62129277U (en) | 1987-08-15 |
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