JP3800838B2 - Stepping motor - Google Patents

Stepping motor Download PDF

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Publication number
JP3800838B2
JP3800838B2 JP36454198A JP36454198A JP3800838B2 JP 3800838 B2 JP3800838 B2 JP 3800838B2 JP 36454198 A JP36454198 A JP 36454198A JP 36454198 A JP36454198 A JP 36454198A JP 3800838 B2 JP3800838 B2 JP 3800838B2
Authority
JP
Japan
Prior art keywords
terminal
recess
vicinity
termination line
termination
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
Application number
JP36454198A
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Japanese (ja)
Other versions
JP2000188840A (en
Inventor
正弘 佐篠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to JP36454198A priority Critical patent/JP3800838B2/en
Publication of JP2000188840A publication Critical patent/JP2000188840A/en
Application granted granted Critical
Publication of JP3800838B2 publication Critical patent/JP3800838B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【0001】
【発明の属する技術分野】
本発明は、主として情報関連機器に用いられるステッピングモータに係り、詳しくはその端子構造に関する。
【0002】
【従来の技術】
近年、情報関連機器においてはますます高い信頼性を備えたステッピングモータが求められている。
【0003】
本発明が適用される分野のステッピングモータ(以下モータという)の構造を図2に示す。図2において、ステータコア1にはインシュレータ2を介してマグネットワイヤ3が巻回されている。その終端線を接続する端子台14は、インシュレータ2の軸方向の一端に圧入保持されている。
【0004】
従来、このマグネットワイヤの終端を端子台に接続する部分の構造は図3のように構成していた。図3において、インシュレ−タ2の近傍に配置された端子台14には端子ピン15〜17があり、凹部18、19を経由した終端線20〜23はそれぞれ端子ピン15〜17のいずれかに接続され半田付けされている。
【0005】
【発明が解決しようとする課題】
しかしながらこの構成においては、例えば凹部18から出た終端線20、21がそのまま端子ピン15、16に達し半田付けされているので、終端線20、21の絶縁皮膜が凹部18付近で半田付けするときの熱によって溶け、絶縁不良となる(レアショートという)ことがあった。また、凹部18と端子ピンとの距離が線径や外力からみて遠いとき、終端線が振動により疲労破壊するおそれがあった。
【0006】
本発明は、このような絶縁不良を防ぎ、終端線の断線を防いで良好な品質と高い信頼性を備えた優れたステッピングモータを提供することを目的とする。
【0007】
【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、端子台に、端子ピンの近傍に振り分け突起を設け、複数の終端線の少なくとも一部が振り分け突起を経由して端子ピンに達するようにしたものである。
【0008】
【発明の実施の形態】
以下本発明の実施の形態について、図面を参照して説明する。
【0009】
図1は本発明によるステッピングモータの、マグネットワイヤの終端を端子台に接続する部分の構造平面図である。図1において、インシュレータ2の近傍に配置された端子台24には端子ピン15〜17があり、さらに端子ピン15の近傍には振り分け突起25がある。同様に端子ピン17の近傍には振り分け突起26がある。
【0010】
ここで、凹部18を出た2本の終端線30、31は凹部18付近では隣接している。そのうち終端線30はそのまま端子ピン15に達し、終端線31は振り分け突起25を経由して端子ピン16に達する。同様に、凹部19を出た2本の終端線32、33は凹部19付近では隣接しているが、終端線33はそのまま端子ピン17に達し、終端線32は振り分け突起26を経由して端子ピン16に達する。
【0011】
そして、それぞれの終端線はそれぞれの端子ピンにからげられ、半田付けされる。このとき、端子ピン16には2本の終端線が接続されているので、他の端子ピンより半田の付着量を多くする必要があり、端子ピン16およびそれに繋がる終端線31、32は高温状態が長時間持続する傾向にある。
【0012】
本発明の振り分け突起25、26は、以下に説明するように機能しモータの品質と信頼性を向上する。すなわち、
第1に、端子ピン16の半田付け部と終端線の近接部との間に障壁を形成する。それによって半田付け部および半田付け装置の輻射熱が終端線の近接部に伝わることを防止し、終端線近接部の温度上昇を防いで互いにレアショートすることを防ぐ。
【0013】
第2に、半田付け部と終端線の近接部との間の距離を遠くする。それによって終端線を伝わる熱が放散することを助け、終端線近接部の温度上昇を防いで互いにレアショートすることを防ぐ。
【0014】
第3に、半田付け部と終端線の近接部との間で熱を吸収する。終端線が振り分け突起に接触する部分で終端線の熱を振り分け突起に伝達することにより、終端線近接部の温度上昇を防いで互いにレアショートすることを防ぐ。
【0015】
第4に、半田付け部と終端線の近接部との間を支える。それによって終端線の振動を減衰し、振動による終端線の疲労破壊を防ぐ。
【0016】
なお、本発明は上記実施の形態に限定されるものではなく、本発明の主旨の範囲で様々な応用展開が可能である。
【0017】
【発明の効果】
以上の記載から明らかなように本発明によれば、端子台に、端子ピンの近傍に振り分け突起を設け、複数の終端線の少なくとも一部が振り分け突起を経由して端子ピンに達するようにしたので、終端線が近接部でレアショートすることを防ぎ、品質を向上させる。また、終端線の疲労破壊を防いで耐振動性を向上させる。そしてそれによって、良好な品質と高い信頼性を備えた優れたステッピングモータを提供できるものである。
【図面の簡単な説明】
【図1】本発明のマグネットワイヤの終端を端子台に接続する部分の構造図
【図2】本発明が適用される分野のステッピングモータの全体構造図
【図3】 従来のマグネットワイヤの終端を端子台に接続する部分の構造図
【符号の説明】
1 ステータコア
2 インシュレータ
3 マグネットワイヤ
4 カバー
5 フランジ
6 ロータコア
7 マグネット
8 シャフト
9 軸受ボス
10 ベアリング
11 スラストワッシャ
12 予圧バネ
13 エンドカバー
14、24 端子台
15、16、17 端子ピン
18、19 凹部
25、26 振り分け突起
20、21、22、23、30、31、32、33 終端線
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stepping motor mainly used for information-related equipment, and more particularly to a terminal structure thereof.
[0002]
[Prior art]
In recent years, stepping motors with higher reliability have been demanded for information-related equipment.
[0003]
The structure of a stepping motor (hereinafter referred to as a motor) in the field to which the present invention is applied is shown in FIG. In FIG. 2, a magnet wire 3 is wound around the stator core 1 via an insulator 2. A terminal block 14 for connecting the terminal line is press-fitted and held at one end of the insulator 2 in the axial direction.
[0004]
Conventionally, the structure of the portion connecting the end of the magnet wire to the terminal block has been configured as shown in FIG. In FIG. 3, the terminal block 14 arranged in the vicinity of the insulator 2 has terminal pins 15 to 17, and the termination lines 20 to 23 passing through the recesses 18 and 19 are respectively connected to the terminal pins 15 to 17. Connected and soldered.
[0005]
[Problems to be solved by the invention]
However, in this configuration, for example, the termination lines 20 and 21 coming out of the recess 18 reach the terminal pins 15 and 16 as they are and are soldered. Therefore, when the insulating film of the termination lines 20 and 21 is soldered near the recess 18 In some cases, it melts due to heat and causes poor insulation (called rare short). Further, when the distance between the recess 18 and the terminal pin is far from the wire diameter or external force, the terminal wire may be fatigued due to vibration.
[0006]
It is an object of the present invention to provide an excellent stepping motor having good quality and high reliability by preventing such insulation failure and preventing termination line breakage.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a terminal block with a distribution protrusion in the vicinity of the terminal pin so that at least a part of the plurality of terminal lines reach the terminal pin via the distribution protrusion. .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0009]
FIG. 1 is a structural plan view of a portion of a stepping motor according to the present invention for connecting a terminal end of a magnet wire to a terminal block. In FIG. 1, the terminal block 24 arranged in the vicinity of the insulator 2 has terminal pins 15 to 17, and further, there is a sorting protrusion 25 in the vicinity of the terminal pin 15. Similarly, there is a sorting protrusion 26 in the vicinity of the terminal pin 17.
[0010]
Here, the two termination lines 30 and 31 exiting the recess 18 are adjacent in the vicinity of the recess 18. Of these, the terminal line 30 reaches the terminal pin 15 as it is, and the terminal line 31 reaches the terminal pin 16 via the sorting protrusion 25. Similarly, the two termination lines 32 and 33 exiting the recess 19 are adjacent in the vicinity of the recess 19, but the termination line 33 reaches the terminal pin 17 as it is, and the termination line 32 is connected to the terminal via the distribution protrusion 26. Pin 16 is reached.
[0011]
Each terminal line is tangled to each terminal pin and soldered. At this time, since two terminal wires are connected to the terminal pin 16, it is necessary to increase the amount of solder attached to other terminal pins, and the terminal pin 16 and the terminal wires 31 and 32 connected thereto are in a high temperature state. Tend to last for a long time.
[0012]
The distribution projections 25 and 26 of the present invention function as described below to improve the quality and reliability of the motor. That is,
First, a barrier is formed between the soldered portion of the terminal pin 16 and the proximity portion of the termination line. This prevents the radiant heat of the soldering part and the soldering apparatus from being transmitted to the proximity part of the termination line, and prevents the temperature rise of the termination line proximity part and prevents a short circuit between them.
[0013]
Second, the distance between the soldering portion and the proximity portion of the termination line is increased. This helps to dissipate the heat that travels through the termination line and prevents a temperature rise in the vicinity of the termination line and prevents a short circuit between them.
[0014]
Third, heat is absorbed between the soldering portion and the proximity portion of the termination line. By transmitting the heat of the termination line to the distribution projection at the portion where the termination line contacts the distribution projection, the temperature rise in the vicinity of the termination line is prevented, thereby preventing a short circuit from occurring.
[0015]
Fourth, it supports between the soldering part and the proximity part of the termination line. As a result, the vibration of the terminal line is attenuated, and fatigue failure of the terminal line due to vibration is prevented.
[0016]
Note that the present invention is not limited to the above-described embodiment, and various application developments are possible within the scope of the gist of the present invention.
[0017]
【The invention's effect】
As is clear from the above description, according to the present invention, the terminal block is provided with the distribution protrusion in the vicinity of the terminal pin, and at least a part of the plurality of terminal lines reaches the terminal pin via the distribution protrusion. Therefore, it is possible to prevent the termination line from being short-circuited in the proximity portion and improve the quality. Further, the fatigue resistance of the terminal line is prevented and the vibration resistance is improved. As a result, it is possible to provide an excellent stepping motor having good quality and high reliability.
[Brief description of the drawings]
FIG. 1 is a structural diagram of a portion connecting a terminal end of a magnet wire of the present invention to a terminal block. FIG. 2 is an overall structural diagram of a stepping motor in a field to which the present invention is applied. Structural diagram of the part connected to the terminal block [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Stator core 2 Insulator 3 Magnet wire 4 Cover 5 Flange 6 Rotor core 7 Magnet 8 Shaft 9 Bearing boss 10 Bearing 11 Thrust washer 12 Preload spring 13 End cover 14, 24 Terminal blocks 15, 16, 17 Terminal pins 18, 19 Recesses 25, 26 Sorting protrusion 20, 21, 22, 23, 30, 31, 32, 33 Termination line

Claims (1)

回転軸に垂直に配置された複数の突極を有するステータコアと、前記突極を囲むように取り付けられたインシュレータと、 前記突極に巻回され終端線を有する複数のマグネットワイヤと、前記インシュレータの軸方向端近傍に圧入保持され前記終端線を接続する端子台とを備え、 前記端子台またはその近傍には前記終端線を通過させる凹部があり、 前記端子台には、端子ピンと、前記凹部および前記端子ピンの近傍にある振り分け突起とがあり、前記凹部を経由した前記複数の終端線の少なくとも一部が前記振り分け突起を経由して前記端子ピンに達するようにしたステッピングモータ。A stator core having a plurality of salient poles arranged perpendicular to the rotation axis, an insulator attached to surround the salient poles, a plurality of magnet wires wound around the salient poles and having a termination line, and the insulator A terminal block that is press-fitted and held near the end in the axial direction and connects the termination line, and a recess that allows the termination line to pass therethrough or in the vicinity of the terminal block. The terminal block includes a terminal pin, the recess, and A stepping motor having a sorting protrusion in the vicinity of the terminal pin, wherein at least a part of the plurality of terminal lines passing through the recess reaches the terminal pin via the sorting protrusion.
JP36454198A 1998-12-22 1998-12-22 Stepping motor Expired - Fee Related JP3800838B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP36454198A JP3800838B2 (en) 1998-12-22 1998-12-22 Stepping motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP36454198A JP3800838B2 (en) 1998-12-22 1998-12-22 Stepping motor

Publications (2)

Publication Number Publication Date
JP2000188840A JP2000188840A (en) 2000-07-04
JP3800838B2 true JP3800838B2 (en) 2006-07-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP36454198A Expired - Fee Related JP3800838B2 (en) 1998-12-22 1998-12-22 Stepping motor

Country Status (1)

Country Link
JP (1) JP3800838B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE502004000202D1 (en) * 2003-09-18 2006-01-26 Leister Process Technologies S Brushless electric motor

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