JP4996021B2 - motor - Google Patents

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Publication number
JP4996021B2
JP4996021B2 JP2001264772A JP2001264772A JP4996021B2 JP 4996021 B2 JP4996021 B2 JP 4996021B2 JP 2001264772 A JP2001264772 A JP 2001264772A JP 2001264772 A JP2001264772 A JP 2001264772A JP 4996021 B2 JP4996021 B2 JP 4996021B2
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JP
Japan
Prior art keywords
terminal
coil bobbin
motor
terminal portion
support member
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
JP2001264772A
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Japanese (ja)
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JP2003079127A (en
JP2003079127A5 (en
Inventor
佐藤  修
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.)
Canon Electronics Inc
Original Assignee
Canon Electronics Inc
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 Canon Electronics Inc filed Critical Canon Electronics Inc
Priority to JP2001264772A priority Critical patent/JP4996021B2/en
Publication of JP2003079127A publication Critical patent/JP2003079127A/en
Publication of JP2003079127A5 publication Critical patent/JP2003079127A5/ja
Application granted granted Critical
Publication of JP4996021B2 publication Critical patent/JP4996021B2/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、コイルボビンを備えるモータに関する。
【0002】
【従来の技術】
従来、モータに備えられるコイルボビンは、実開平1−60505号公報に示すように、2つの端子部が互いに背中合わせに配置されており、2つの端子部が互いに嵌合することにより、端子部の補強を行っている。
【0003】
【発明が解決しようとする課題】
しかしながら、上記従来例では、2つの端子部が離れている場合や、コイルが1つだけ設けられている場合などでは端子部が互いに嵌合できないので、端子部の補強が困難になる欠点があった。また、端子部が、対向する端子部の反対側に倒れる負荷に対しては、端子部の強度を互いに補強できず、折れ易くなる欠点があった。
【0004】
特に、小型のモータでは、コイルボビンの厚みを極限まで薄くする必要があり、端子部が折れ易くなるため、小型化の障害となっていた。
【0005】
本発明の目的は、端子部の機械的強度を向上させることができるモータを提供することにある。
【0006】
【問題を解決するための手段】
上記目的を達成するため、本発明のモータは、コイル線が巻回される巻軸と、該巻軸の軸方向の端に形成されたツバと、前記ツバの外周縁の一部に形成され径方向に延びる支持部と、前記コイル線が接続される端子が配置される端子部とを備え、前記支持部に前記端子部が一体的に設けられたコイルボビンと、軸方向に延び前記支持部が嵌合する切り欠き部が形成されて、前記コイルボビンを支持する円筒形状の支持部材とを有し、前記端子部には前記支持部が前記切り欠き部に嵌合した状態で前記支持部材の外周面に当接する嵌合部が形成され、前記嵌合部で前記巻軸の中心軸方向および周方向に関して前記端子部を前記支持部材に嵌合することを特徴とする。
【0013】
【本発明の実施の形態】
以下、本発明の実施の形態に係るモータを詳説する。
【0014】
図1は、本発明の実施形態に係るモータの1つであるステッピングモータの分解斜視図である。
【0015】
図1において、ステッピングモータ100は、モータのカバーとしての役目を果たす支持部材としての連結リング11と、連結リング11に内嵌される中間リング12と、中間リング12に収容され、ラジアル方向に複数の磁極{2n極、n=5}に着磁された円筒形状のマグネット13と、マグネット13を回転自在に支持する回転軸14とを備える。
【0016】
また、ステッピングモータ100は、一端で先端軸受15を支持すると共に、他端でコイルボビン(以下コイルボビン装置ともいう)16を位置決め支持する取付け基板17を有する。
【0017】
回転軸14の先端は、先端軸受15に支持されると共に、回転軸14の後端は、後端軸受18を介して後述する図2のコイルボビン装置19支持される。
【0018】
中間リング12は、後述する外ステータヨーク21,25の対向位相角を360/(n×4)(本実施の形態では、n=5)に設定すると共に、後述するコイル22,26を位置決めする。連結リング11は、外ステータヨーク21,25を位置決め固定する。
【0019】
図2は、図1におけるコイルボビン装置19の分解斜視図である。
【0020】
図2において、コイルボビン装置19は、外ステータヨーク21と、周囲にコイル22が巻回されたコイルボビン23と、コイルボビン23に内嵌された内ステータヨーク24とを主として備える。
【0021】
外ステータヨーク21は、軟磁性体から成り、マグネット13の外径側ラジアル方向に空壁を設けて対向する複数の磁極{n極、n=5}を有し、マグネット13及び内ステータヨーク24と協働して磁気回路を構成する。
【0022】
内ステータヨーク24は、軟磁性体から成り、マグネット13の内径側ラジアル方向に空壁を設けて対向する単一の磁極を有し、マグネット13及び外ステータヨーク21と協働して磁気回路を構成する。
【0023】
コイルボビン装置16は、取付け基板17の他端に固着される外ステータヨーク25と、周囲にコイル26が巻回されたコイルボビン27と、コイルボビン27に内嵌された内ステータヨーク28とを主として備え、これらは、コイルボビン装置19のものと同様の構成である。
【0024】
また、後端軸受18は、内ステータヨーク24に設けられたキャップ29に支持されたスラストバネ30によりスラスト方向に押圧され、その結果、回転軸14もスラスト方向に付勢されている。
【0025】
上記構成において、コイル22,26が通電されると外ステータヨーク21,25及び内ステータヨーク24,27が励磁されて各磁極に誘磁され、マグネット13の着磁極と反発・吸引して、マグネット13と回転軸14とのマグネットロータがコイルの通電に従って回転移動する。
【0026】
図3は、図2おけるコイルボビン23の斜視図である。
【0027】
図3において、コイルボビン23は、コイル線が巻回される巻軸55と、巻軸55の両端フランジを形成するツバ56,57とを有する。ツバ57の上端外周縁には、支持部58が形成され、この支持部58には、2つの端子52を有する端子部53が一体的に設けられている。端子部53は嵌合部54を有し、この嵌合部54において支持部材である連結リング11と嵌合する。巻軸55に巻回されたコイル線は、端子52に接続される。
【0028】
端子部53は、嵌合部54を介して連結リング11に対して、中心軸10の軸方向に関して且つ周方向に関して嵌合する。
【0029】
コイルボビン27は、コイルボビン23と同様の構成を有する。
【0030】
コイルボビン27,23にコイル線26,22を巻回した後、連結リング11を挟んでコイルボビン装置16,19を対向させて組み立てたコイルボビン装置を図4及び図5に示す。
【0031】
連結リング11は、切り欠き部11a,11bが形成される。切り欠き部11a,11bに支持部58と嵌合することで、端子部53、ひいては端子52を位置決めする。
【0032】
端子52に中心軸10に関して軸方向の負荷A又はBが与えられたとき、端子52を支持する端子部53が倒れて支持部58を破壊しようとするが、端子52に対して端子部53と連結リング11の中心軸10方向の軸方向に嵌合する嵌合部54により端子部53は連結リング11に支持され、端子部53が倒れないように作用する。
【0033】
一方、端子52に中心軸10の周方向の負荷C又はDが与えられたとき、端子52を支持する端子部54が倒れるか又はねじれて支持部58を破壊しようとするが、端子部53と連結リング11の中心軸10の周方向に関して嵌合する嵌合部54により端子部53は連結リング12に支持され、端子部54が倒れるか又はねじれないように作用する。
【0034】
本実施の形態によれば、端子部53の倒れに対する機械的強度を補強することができ、ツバ56,57の薄肉化を実現してコイルボビンを小型化することができる。
【0035】
本実施の形態では、端子部53を、接着剤等を使用せずに嵌合のみで補強できるため、接着剤の染み出しによる不具合等を防止できる。
【0036】
本実施の形態では、端子部53と連結リング11は嵌合部54において圧入されて固着されてもよく、端子部53と連結リング11は嵌合部54において接着されて固着されてもよい。また、支持部材は外ステータヨークであってもよい。さらに、端子52は端子部53と一体に成形されたモールドであってもよい。
【0037】
【発明の効果】
以上詳細に説明したように、本発明のモータによれば、端子部の倒れに対する機械的強度を補強することができる。
【図面の簡単な説明】
【図1】 本発明の実施形態に係るモータの1つであるステッピングモータの分解斜視図である。
【図2】 図1におけるコイルボビンの分解斜視図である。
【図3】 図2におけるコイルボビンの斜視図である。
【図4】 本発明の実施の形態に係るステッピングモータの一部を示す平面図である。
【図5】 本発明の実施の形態に係るステッピングモータの一部を示す正面図である。
【符号の説明】
11 連結リング
12 中間リング
13 マグネット
16,19 コイルボビン
52 端子
53 端子部
54 嵌合部
55 巻軸
56,57 ツバ
58 支持部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a motor including a coil bobbin .
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a coil bobbin provided in a motor has two terminal portions arranged back to back as shown in Japanese Utility Model Laid-Open No. 1-60505, and the two terminal portions are fitted together to reinforce the terminal portion. It is carried out.
[0003]
[Problems to be solved by the invention]
However, in the above conventional example, when the two terminal portions are separated from each other or when only one coil is provided, the terminal portions cannot be fitted to each other. It was. In addition, there is a drawback that the strength of the terminal portions cannot be reinforced with respect to a load in which the terminal portions fall to the opposite side of the opposing terminal portions, and the terminal portions are easily broken.
[0004]
In particular, in a small motor , the thickness of the coil bobbin needs to be as thin as possible, and the terminal portion is easily broken, which has been an obstacle to miniaturization.
[0005]
The objective of this invention is providing the motor which can improve the mechanical strength of a terminal part.
[0006]
[Means for solving problems]
In order to achieve the above object, a motor of the present invention is formed on a winding shaft around which a coil wire is wound, a flange formed at an axial end of the winding shaft, and a part of an outer peripheral edge of the flange. A coil bobbin including a support portion extending in a radial direction and a terminal portion on which a terminal to which the coil wire is connected is disposed, the terminal portion being integrated with the support portion; and the support portion extending in an axial direction. There are notches for fitting form, and a support member having a cylindrical shape for supporting the coil bobbin, the terminal portion, the support member in a state in which the support portion is fitted in the notch A fitting portion that abuts on the outer peripheral surface is formed, and the terminal portion is fitted to the support member in the fitting portion with respect to the central axis direction and the circumferential direction of the winding shaft .
[0013]
[Embodiments of the Invention]
Hereinafter, a motor according to an embodiment of the present invention will be described in detail.
[0014]
FIG. 1 is an exploded perspective view of a stepping motor which is one of motors according to an embodiment of the present invention.
[0015]
In FIG. 1, a stepping motor 100 is accommodated in a connecting ring 11 as a support member that serves as a cover of the motor, an intermediate ring 12 fitted in the connecting ring 11, and the intermediate ring 12, and a plurality of stepping motors 100 are arranged in the radial direction. Cylindrical magnet 13 magnetized to magnetic poles {2n poles, n = 5}, and a rotating shaft 14 that rotatably supports the magnet 13.
[0016]
Further, the stepping motor 100 has a mounting substrate 17 that supports the tip bearing 15 at one end and positions and supports a coil bobbin (hereinafter also referred to as a coil bobbin device) 16 at the other end.
[0017]
The tip of the rotary shaft 14 is supported on the tip bearing 15, the rear end of the rotary shaft 14, Ru is supported on the coil bobbin 19 of FIG. 2 to be described later via the rear bearing 18.
[0018]
The intermediate ring 12 sets an opposing phase angle of outer stator yokes 21 and 25, which will be described later, to 360 / (n × 4) (in this embodiment, n = 5) and positions coils 22, 26 which will be described later. . The connection ring 11 positions and fixes the outer stator yokes 21 and 25.
[0019]
FIG. 2 is an exploded perspective view of the coil bobbin device 19 in FIG.
[0020]
In FIG. 2, the coil bobbin device 19 mainly includes an outer stator yoke 21, a coil bobbin 23 around which a coil 22 is wound, and an inner stator yoke 24 fitted inside the coil bobbin 23.
[0021]
The outer stator yoke 21 is made of a soft magnetic material, and has a plurality of magnetic poles {n poles, n = 5} that are opposed to each other by providing an empty wall in the radial direction of the outer diameter side of the magnet 13. A magnetic circuit is configured in cooperation with
[0022]
The inner stator yoke 24 is made of a soft magnetic material, has a single magnetic pole facing the inner wall of the magnet 13 in the radial direction on the inner diameter side, and cooperates with the magnet 13 and the outer stator yoke 21 to form a magnetic circuit. Constitute.
[0023]
The coil bobbin device 16 mainly includes an outer stator yoke 25 fixed to the other end of the mounting substrate 17, a coil bobbin 27 around which a coil 26 is wound, and an inner stator yoke 28 fitted in the coil bobbin 27. These have the same configuration as that of the coil bobbin device 19.
[0024]
The rear end bearing 18 is pressed in the thrust direction by a thrust spring 30 supported by a cap 29 provided in the inner stator yoke 24. As a result, the rotating shaft 14 is also urged in the thrust direction.
[0025]
In the above configuration, when the coils 22 and 26 are energized, the outer stator yokes 21 and 25 and the inner stator yokes 24 and 27 are excited to be attracted to the magnetic poles, and repelled and attracted to the magnetized magnetic poles of the magnets 13. The magnet rotor of 13 and the rotating shaft 14 rotates according to the energization of the coil.
[0026]
FIG. 3 is a perspective view of the coil bobbin 23 in FIG.
[0027]
In FIG. 3, the coil bobbin 23 includes a winding shaft 55 around which a coil wire is wound, and flanges 56 and 57 that form both end flanges of the winding shaft 55. A support portion 58 is formed on the outer periphery of the upper end of the collar 57, and a terminal portion 53 having two terminals 52 is integrally provided on the support portion 58. The terminal portion 53 has a fitting portion 54, and the fitting portion 54 is fitted with the connection ring 11 that is a support member. The coil wire wound around the winding shaft 55 is connected to the terminal 52.
[0028]
The terminal portion 53 is fitted to the connecting ring 11 via the fitting portion 54 with respect to the axial direction of the central shaft 10 and the circumferential direction.
[0029]
The coil bobbin 27 has the same configuration as the coil bobbin 23.
[0030]
FIG. 4 and FIG. 5 show the coil bobbin devices assembled by winding the coil wires 26 and 22 around the coil bobbins 27 and 23 and then facing the coil bobbin devices 16 and 19 with the connecting ring 11 in between.
[0031]
The connecting ring 11, notch portions 11a, 11b are formed. By fitting the support portion 58 into the notches 11 a and 11 b , the terminal portion 53 and thus the terminal 52 are positioned.
[0032]
When an axial load A or B is applied to the terminal 52 with respect to the central axis 10, the terminal portion 53 that supports the terminal 52 falls down and tries to destroy the support portion 58. The terminal portion 53 is supported by the connecting ring 11 by the fitting portion 54 that is fitted in the axial direction of the central axis 10 of the connecting ring 11 so that the terminal portion 53 does not fall down.
[0033]
On the other hand, when a load C or D in the circumferential direction of the central shaft 10 is applied to the terminal 52, the terminal portion 54 that supports the terminal 52 falls or twists and tries to break the support portion 58. The terminal portion 53 is supported by the connecting ring 12 by the fitting portion 54 that is fitted in the circumferential direction of the central axis 10 of the connecting ring 11 and acts so that the terminal portion 54 does not fall down or twist.
[0034]
According to this embodiment, it is possible to reinforce the mechanical strength against the inclination of the terminal portion 53, it is possible to miniaturize the coil bobbin to achieve thinner tool bar 56, 57.
[0035]
In the present embodiment, since the terminal portion 53 can be reinforced only by fitting without using an adhesive or the like, it is possible to prevent problems due to the bleeding of the adhesive.
[0036]
In the present embodiment, the terminal portion 53 and the connecting ring 11 may be press-fitted and fixed at the fitting portion 54, and the terminal portion 53 and the connecting ring 11 may be bonded and fixed at the fitting portion 54. Further, the support member may be an outer stator yoke. Further, the terminal 52 may be a mold formed integrally with the terminal portion 53.
[0037]
【Effect of the invention】
As described above in detail, according to the motor of the present invention, it is possible to reinforce the mechanical strength against falling of the ends of the terminal portion.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a stepping motor that is one of motors according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of a coil bobbin in FIG.
3 is a perspective view of the coil bobbin in FIG. 2. FIG.
FIG. 4 is a plan view showing a part of the stepping motor according to the embodiment of the present invention.
FIG. 5 is a front view showing a part of the stepping motor according to the embodiment of the present invention.
[Explanation of symbols]
11 Connection ring 12 Intermediate ring 13 Magnets 16 and 19 Coil bobbin 52 Terminal 53 Terminal part 54 Fitting part 55 Winding shaft 56, 57 Head 58 Support part

Claims (4)

コイル線が巻回される巻軸と、該巻軸の軸方向の端に形成されたツバと、前記ツバの外周縁の一部に形成され径方向に延びる支持部と、前記コイル線が接続される端子が配置される端子部とを備え、前記支持部に前記端子部が一体的に設けられたコイルボビンと、
軸方向に延び前記支持部が嵌合する切り欠き部が形成されて、前記コイルボビンを支持する円筒形状の支持部材とを有し、
前記端子部には前記支持部が前記切り欠き部に嵌合した状態で前記支持部材の外周面に当接する嵌合部が形成され、前記嵌合部で前記巻軸の中心軸方向および周方向に関して前記端子部を前記支持部材に嵌合することを特徴とするモータ。
A winding shaft around which the coil wire is wound, a flange formed at an axial end of the winding shaft, a support portion formed in a part of the outer peripheral edge of the flange and extending in the radial direction, and the coil wire connected to each other A coil bobbin in which the terminal portion is provided integrally with the support portion;
A notch part extending in the axial direction and fitted with the support part is formed, and has a cylindrical support member that supports the coil bobbin;
Said terminal portion, said fitting portion abutting the outer peripheral surface of the support member in a state where the support portion is fitted into the cutout portion is formed, the central axis and periphery of the winding shaft in the fitting portion A motor , wherein the terminal portion is fitted to the support member with respect to a direction .
前記支持部材は前記モータのカバーであることを特徴とする請求項1に記載のモータ。  The motor according to claim 1, wherein the support member is a cover of the motor. 前記支持部材は、前記モータのステータヨークであることを特徴とする請求項1に記載のモータ。  The motor according to claim 1, wherein the support member is a stator yoke of the motor. 前記端子は、前記端子部と一体に成形されていることを特徴とする請求項1乃至3のいずれか1項に記載のモータ。  The motor according to any one of claims 1 to 3, wherein the terminal is formed integrally with the terminal portion.
JP2001264772A 2001-08-31 2001-08-31 motor Expired - Fee Related JP4996021B2 (en)

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JP2003079127A JP2003079127A (en) 2003-03-14
JP2003079127A5 JP2003079127A5 (en) 2008-10-23
JP4996021B2 true JP4996021B2 (en) 2012-08-08

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JP5116280B2 (en) * 2006-10-27 2013-01-09 キヤノン株式会社 Drive device

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JP2856384B2 (en) * 1994-06-07 1999-02-10 アスモ株式会社 Stepper motor stator
JPH08322231A (en) * 1995-05-26 1996-12-03 Fuji Elelctrochem Co Ltd Coil bobbin for stepping motor
JPH09224342A (en) * 1996-02-19 1997-08-26 Fuji Elelctrochem Co Ltd Terminal pin of coil bobbin
JP3420423B2 (en) * 1996-02-21 2003-06-23 株式会社三協精機製作所 Coil component and motor using the coil component
JPH11127552A (en) * 1997-10-20 1999-05-11 Higashifuji Seisakusho:Kk Motor

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