JP3004537U - Vibration motor with power supply terminal - Google Patents
Vibration motor with power supply terminalInfo
- Publication number
- JP3004537U JP3004537U JP1994007025U JP702594U JP3004537U JP 3004537 U JP3004537 U JP 3004537U JP 1994007025 U JP1994007025 U JP 1994007025U JP 702594 U JP702594 U JP 702594U JP 3004537 U JP3004537 U JP 3004537U
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- Prior art keywords
- cylindrical
- power supply
- motor
- supply terminal
- field magnet
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Abstract
(57)【要約】
【目的】 偏心ウエイトが部分円偏心しながら回転した
場合に，半径方向に振れたとしても，給電端子と接触し
ないようにする。
【構成】 偏心ウエイトの径方向の振れにより該偏心ウ
エイトの外周部と接触する惧れがある給電端子部に切欠
や透孔などの偏心ウエイト接触防止用逃げ部を形成す
る。
(57) [Summary] [Purpose] When the eccentric weight rotates with partial circle eccentricity, it does not come into contact with the power supply terminal even if it swings in the radial direction. [Structure] An escape portion for preventing contact with an eccentric weight such as a notch or a through hole is formed in a power supply terminal portion that is likely to come into contact with an outer peripheral portion of the eccentric weight due to radial deflection of the eccentric weight.
Description
【０００１】[0001]
本考案は，ペ−ジャ［呼び出し装置］等の振動アラ−ム装置に使用される，非 常に小型，軽量の給電端子付振動モ−タに適する。 INDUSTRIAL APPLICABILITY The present invention is suitable for a vibration motor with a power supply terminal, which is extremely small and lightweight, which is used in a vibration alarm device such as a pager [calling device].
【０００２】[0002]
ペ−ジャ［所謂，ポケットベルと言われている］では，電話の呼び出しがあっ たことを知らせるのに，近年では音で知らせる代わりに振動方式で知らせること が行われている。この振動を起こさせる方式のペ−ジャでは，図８に示すように 円筒形マイクロモ−タ１４’のシャフト９に半円状の偏心ウエイト［分銅，偏心 カウンタ，偏心カムともいう］１７を固定してあり，シャフト９が回転すると偏 心ウエイト１７は部分円偏心して回転するため，その振動が円筒形マイクロモ− タ１４’のモ−タハウジングに伝わるので，この偏心ウエイト付振動モ−タ１２ ’を取り付けたペ−ジャの筐体にその振動が伝播し，ペ−ジャを身に付けたもの がその振動を感じ取ることで，電話の呼び出しがあることを知り得る。 Pagers [so-called pagers] use a vibration method in recent years to notify that a telephone call is made instead of using a sound. In this vibration type pager, a semicircular eccentric weight [also referred to as a weight, an eccentric counter or an eccentric cam] 17 is fixed to the shaft 9 of a cylindrical micromotor 14 'as shown in FIG. When the shaft 9 rotates, the eccentric weight 17 eccentrically rotates in a partial circle, and its vibration is transmitted to the motor housing of the cylindrical micromotor 14 '. Therefore, the eccentric weight-equipped vibration motor 12'. The vibration propagates to the housing of the pager where the is attached, and the person wearing the pager senses the vibration and can know that there is a telephone call.
【０００３】 このペ−ジャに使われる円筒形マイクロモ−タ１４’は，大部分がコアレスモ −タとなっていて，コアタイプのものは余り見られない。コアレスモ−タが使用 される理由は，種々あるものの，コアタイプモ−タに比較して起動特性が良い， 耐衝撃性があるので，ペ−ジャを落下させたときでもモ−タを破損する危険性が 少ない，消費電流が少ない，等の特長があるからである。Most of the cylindrical micromotor 14 'used in this pager is a coreless motor, and the core type is rarely seen. Although there are various reasons for using a coreless motor, it has better starting characteristics than the core type motor and has shock resistance, so there is a risk of damaging the motor even if the pager is dropped. This is because there are features such as low power consumption and low current consumption.
【０００４】 この従来使用されている円筒形マイクロモ−タとしてのカップ形コアレスモ− タ１４’を用いたカップ形コアレス振動モ−タ１２’について，図８及び図９を 参照して以下に説明する。A cup type coreless vibration motor 12 'using the cup type coreless motor 14' as the conventionally used cylindrical type micro motor will be described below with reference to FIGS. .
【０００５】 このモ−タ１２’（円筒形マイクロモ−タ１４’）は，円筒形コアレス電機子 ５，整流子ハブ８，この整流子ハブ８に形成した整流子片群からなる整流子７， 整流子ハブ８の中心を貫通して整流子ハブ８に固定されたシャフト９からなる回 転子を有する。磁性体でできた円筒形モ−タハウジング１’の一端に樹脂ででき たキャップ１３を装着すると共に，他端にキャップを兼ねたブラシ台１１’を装 着してモ−タ本体を形成している。ブラシ台１１’にブラシ１０を装着し，該ブ ラシ１０を整流子７に摺接させている。ブラシ１０は一対からなり，一方のブラ シ１０はリ−ド線１６によって図示せず正側電源端子に電気的に接続し，他方の ブラシ１０はリ−ド線１６によって図示せず負側電源端子に電気的に接続する。The motor 12 ′ (cylindrical micro motor 14 ′) includes a cylindrical coreless armature 5, a commutator hub 8, a commutator 7 including a commutator piece group formed on the commutator hub 8, The commutator hub 8 has a rotor formed of a shaft 9 which is fixed to the commutator hub 8 and penetrates the center of the commutator hub 8. A cap 13 made of resin is attached to one end of a cylindrical motor housing 1'made of a magnetic material, and a brush base 11 'which also serves as a cap is attached to the other end to form a motor main body. ing. The brush 10 is mounted on the brush base 11 ′, and the brush 10 is brought into sliding contact with the commutator 7. The brushes 10 are composed of a pair, one brush 10 is electrically connected to a positive power supply terminal not shown by a lead wire 16, and the other brush 10 is negative power supply not shown by a lead wire 16. Electrically connect to terminals.
【０００６】 キャップ１３の内面には，小さな径の円筒形の界磁マグネット位置決め突起１ ５を一体形成し，その外周に円筒形の界磁マグネット３の一端を固定して該界磁 マグネット３をキャップ１３に固定する。キャップ１３は，中心部にシャフト通 し孔を有し，上記回転子のシャフト９は，界磁マグネット３内を通し，キャップ １３のシャフト通し孔に設けた銅系のメタル軸承２’−１及び界磁マグネット３ の他端部内周に設けた銅系のメタル軸承２’−２によって回動自在に軸承する。 円筒形マイクロモ−タ１４’の一端から突出したシャフト９に振動を発生させる 為の偏心ウエイト１７を取り付け，カップ形コアレス振動モ−タ１２’を形成す る。A cylindrical field magnet positioning protrusion 15 having a small diameter is integrally formed on the inner surface of the cap 13, and one end of the cylindrical field magnet 3 is fixed to the outer periphery of the field magnet positioning protrusion 15. Secure to cap 13. The cap 13 has a shaft through hole in the center thereof, and the shaft 9 of the rotor passes through the field magnet 3 and the copper-based metal bearings 2'-1 and 2 provided in the shaft through hole of the cap 13 and The field magnet 3 is rotatably supported by a copper-based metal bearing 2'-2 provided on the inner circumference of the other end. An eccentric weight 17 for generating vibration is attached to the shaft 9 protruding from one end of the cylindrical micromotor 14 'to form a cup-shaped coreless vibration motor 12'.
【０００７】[0007]
かかるモ−タ１２’では，これをペ−ジャ内の電子部品などの搭載基板に形成 した導電配線パタ−ンに上記リ−ド線１６の端子を半田付けして電気的結線を行 い，上記搭載基板に固着する。ここにリ−ド線１６が長いとだぶつき，他の障害 物となる。またリ−ド線１６の端部を所定の位置の導電配線パタ−ン位置に導い て，その箇所で半田付けしていた。 In such a motor 12 ', the terminals of the lead wire 16 are soldered to a conductive wiring pattern formed on a mounting substrate for electronic parts in a pager to electrically connect them. It is fixed to the mounting board. If the lead wire 16 is long here, it will be overhanging and become another obstacle. Further, the end portion of the lead wire 16 is guided to a predetermined position of the conductive wiring pattern and soldered at that position.
【０００８】 ここにリ−ド線１６の変わりに，図１０及び図１１に示すように両端にそれぞ れ正側電源給電用電源端子２５’−１，負側電源給電用電源端子２５’−２を取 り付けた給電端子付カップ形振動モ−タ１２’’とすれば，そのモ−タ１２’’ を置いた位置でその給電端子２５’−１，２５−２を搭載基板の所定の導電配線 パタ−ンに半田付けすればよく，リ−ド線１６を所定の位置に導く作業が不要な ので，モ−タ１２’’の半田付け作業が短縮される。この場合，自動機を用いれ ば，モ−タ１２’’を所定の位置に自動的に設置し，而も半田付けも自動的に行 えるため，製造工程を更に楽にするので，昨今では，給電端子付振動モ−タ１２ ’’の要求が増えている。Here, instead of the lead wire 16, as shown in FIGS. 10 and 11, positive power supply power supply power supply terminals 25′-1 and negative power supply power supply power supply terminals 25′− are provided at both ends, respectively. 2 is a cup-type vibration motor with a power supply terminal 12 ", the power supply terminals 25'-1 and 25-2 are mounted on the mounting board at the predetermined position of the motor 12". The soldering work of the motor 12 ″ can be shortened because the work of guiding the lead wire 16 to a predetermined position is not necessary and the work of soldering the motor 12 ″ can be performed. In this case, if an automatic machine is used, the motor 12 '' can be automatically installed at a predetermined position, and soldering can be automatically performed, which makes the manufacturing process easier. The demand for the vibration motor 12 ″ with terminals is increasing.
【０００９】 しかしながら，給電端子付振動モ−タ，例えば給電端子付カップ形振動モ−タ １２’’では，シャフト９に偏心ウエイト１７をつけて，これを部分円偏心させ ながら回転させ，振動を発生させているが，これに用いる円筒形マイクロモ−タ ，例えばカップ形コアレスモ−タ１４’では，大きな振動を発生させるために， 当該モ−タ１４’を高速回転させており，また偏心ウエイト１７は高比重合金で 形成されているため，図１２に示すように遠心力により点線３０，３１で示すよ うに偏心ウエイト１７が半径外側方向に大きく振れる（シャフト９もその方向に 振れる）ため（モ−タ径が小さくこれに用いるシャフト９も小さな径のものであ るときには，この傾向がより増加する），その振れ量が大きいと，上記偏心ウエ イト１７と対向する位置にまで給電端子２５’−１が長く延びていると，該給電 端子２５’−１に偏心ウエイト１７の外周部１７ａが擦れ合い，摺動音を発生し たり，偏心ウエイト１７の回転が遅くなり大きな振動が得られなくなったり，あ るいは電池残量が少なくなっていて，モ−タ１４’の回転速度が遅くなっている 場合には，偏心ウエイト１７の外周部１７ａが給電端子２５’に接触したまま， モ−タ１４’の回転が止まり，振動が得られなくなる欠点があった。However, in a vibration motor with a power supply terminal, for example, a cup-type vibration motor 12 ″ with a power supply terminal, an eccentric weight 17 is attached to the shaft 9 to rotate the shaft 9 while partially eccentrically rotating the vibration. In the cylindrical micromotor used for this purpose, for example, the cup-shaped coreless motor 14 ', the motor 14' is rotated at high speed in order to generate a large vibration, and the eccentric weight 17 is used. Is made of high specific heavy metal, the eccentric weight 17 largely swings outward in the radial direction (the shaft 9 also swings in that direction) as shown by dotted lines 30 and 31 due to centrifugal force as shown in FIG. -If the shaft diameter used for this is small and the shaft 9 used for this is also small, this tendency will increase.) When the power supply terminal 25'-1 extends to a position facing the girder 17, the outer peripheral portion 17a of the eccentric weight 17 rubs against the power supply terminal 25'-1, and a sliding noise is generated or the eccentric weight is generated. When the rotation of 17 is slow and large vibration cannot be obtained, or when the remaining battery level is low and the rotation speed of the motor 14 'is low, the outer peripheral portion 17a of the eccentric weight 17 is reduced. There is a drawback that the motor 14 'stops rotating and the vibration cannot be obtained while it is in contact with the power supply terminal 25'.
【００１０】 一方，円筒形マイクロモ−タとして用いた，上記のカップ形コアレスモ−タ１ ４’の場合，外径が６ｍｍの非常に小型のもので，部品精度もシビアに要求され ，僅かな誤差でも，モ−タ特性に大きな影響を与える。例えば，整流子ハブ８に 固定されたシャフト９を２つの離れたメタル軸承２’−１と２’−２のシャフト 通し孔の同心度が精度良く取れていないと，上記２つのメタル軸承２’−１と２ ’−２のシャフト通し孔にシャフト９を通すことができないという製造上の問題 が生ずる。あるいは，シャフト９とメタル軸承２’−１，２’−２の相対的側圧 が大きくなり，寿命特性，騒音特性に悪い影響を与えていた。On the other hand, in the case of the above cup-shaped coreless motor 14 'used as a cylindrical micromotor, the outer diameter is very small with a diameter of 6 mm, part accuracy is required to be severe, and a slight error occurs. However, it has a great influence on the motor characteristics. For example, if the shaft 9 fixed to the commutator hub 8 is not accurately concentric with the shaft through holes of two separate metal bearings 2'-1 and 2'-2, the above two metal bearings 2 ' There is a manufacturing problem that the shaft 9 cannot be passed through the shaft through holes -1 and 2'-2. Alternatively, the relative lateral pressure between the shaft 9 and the metal bearings 2'-1, 2'-2 becomes large, which adversely affects the life characteristics and noise characteristics.
【００１１】 また偏心ウエイト１７は，部分円偏心しながら回転し，振動を発生させるが， 上記モ−タ１４’のような距離が長く離れた２つの離れた長さの短いメタル軸承 ２’−１と２’−２でシャフト９を軸承しても，そのような構造では，シャフト ９の振れを十分に抑えることができない。このためシャフト９がメタル軸承２’ −１または２’−２に過度の側圧を与え，騒音特性及び寿命特性を悪くしたり， 円筒形コアレス電機子５が界磁マグネット３あるいはモ−タハウジング１’と擦 れあい，円筒形コアレス電機子５を断線したりしてモ−タの破損を招いたり，ま た，外径の非常に小さなシャフト９の曲げを生じ，偏心ウエイト１７がペ−ジャ 内の基板などと衝突して，大きな騒音を発生したり，モ−タ１４’を駆動できな い，という欠点を招いていた。The eccentric weight 17 rotates while partially eccentrically rotating to generate vibrations, but two metal bearings 2'-with a short distance apart from each other with a long distance like the motor 14 '. Even if the shaft 9 is supported by 1 and 2'-2, with such a structure, the runout of the shaft 9 cannot be sufficiently suppressed. Therefore, the shaft 9 applies excessive lateral pressure to the metal bearings 2'-1 or 2'-2 to deteriorate noise characteristics and life characteristics, and the cylindrical coreless armature 5 causes the field magnet 3 or the motor housing 1 to be damaged. ', The cylindrical coreless armature 5 is broken, the motor is damaged, and the shaft 9 with a very small outer diameter is bent, causing the eccentric weight 17 to move. It collided with the substrate inside and generated a lot of noise and could not drive the motor 14 ', which was a drawback.
【００１２】 また，かかるモ−タ１４’によると，シャフト９と界磁マグネット３間に径方 向空隙１８があるため，界磁マグネット３の磁束を十分に閉じることができず， モ−タ効率の悪いものとなっていた。しかも，キャップ１３は樹脂で形成された 非金属のもので，またメタル軸承２’−１及び２’−２も銅系の非磁性体ででき たものであることから，界磁マグネット３の磁路を閉じることができず，モ−タ １４’の一端部から漏洩磁束を発生する。そこへきて該モ−タ１４’の場合，外 径をより小さな３〜４ｍｍのものに形成しようとすると，そのスペ−スの制約上 ，界磁マグネット３も厚みの薄い外径の小さなものにせざるを得ず，必然的に界 磁マグネット３の磁束も弱くなり，モ−タ特性が悪くなるところに加えて，上記 の欠点を増長していた。また界磁マグネット３の漏洩磁束は，ある種のペ−ジャ の場合には，ある周波数帯域において誤信号の原因となり，非常に嫌われ，漏洩 磁束対策が要求されていた。Further, according to the motor 14 ′, since there is the radial gap 18 between the shaft 9 and the field magnet 3, the magnetic flux of the field magnet 3 cannot be sufficiently closed, and the motor It was inefficient. Moreover, since the cap 13 is made of resin and is made of non-metal, and the metal bearings 2'-1 and 2'-2 are also made of copper-based non-magnetic material, the magnetic field magnet 3 is made of magnetic material. The path cannot be closed and a leakage magnetic flux is generated from one end of the motor 14 '. In the case of the motor 14 ′, if the outer diameter of the motor 14 ′ is to be reduced to 3 to 4 mm, the field magnet 3 should be thin and have a small outer diameter because of the space limitation. Inevitably, the magnetic flux of the field magnet 3 is also weakened inevitably, and the motor characteristics deteriorate. In addition, the leakage flux of the field magnet 3 causes an erroneous signal in a certain frequency band in the case of a certain type of pager, and is very disliked, and a countermeasure against the leakage flux is required.
【００１３】 また，このモ−タ１４’の場合，その製造のし易さと，モ−タ効率の良さを考 えて，亀甲形に巻かれた円筒形コアレス電機子［図３参照］５を用いているのが 多い。この円筒形コアレス電機子５の場合，両端部の斜めに巻かれた導体部［図 ３の５ｂで示す導体部］の部分は，トルクの発生に余り寄与しない部分である。 ここに，このモ−タ１４’の場合，上記キャップ１３の界磁マグネット位置決め 突起１５によって界磁マグネット３をキャップ１３に保持させているが，このよ うな界磁マグネット３の位置決めによれば，界磁マグネット３の一端部を上記円 筒形コアレス電機子５の一端部の斜めに巻かれたトルクの発生に余り寄与しない 導体部の部分にまで長く形成したものを用いなければならず，高価な界磁マグネ ット３になる欠点がある。Further, in the case of this motor 14 ′, a cylindrical coreless armature wound in a hexagonal shape [see FIG. 3] 5 is used in consideration of easiness of manufacturing and good motor efficiency. There are many In the case of this cylindrical coreless armature 5, the portions of the conductor portion [conductor portion 5b shown in FIG. 3] wound diagonally at both ends are portions that do not contribute much to the generation of torque. Here, in the case of this motor 14 ', the field magnet 3 is held in the cap 13 by the field magnet positioning projections 15 of the cap 13. According to the positioning of the field magnet 3 as described above, It is necessary to use one in which one end of the field magnet 3 is formed long even to the portion of the conductor of the cylindrical coreless armature 5 that does not contribute much to the generation of the obliquely wound torque, which is expensive. There is a drawback that it becomes a field magnet 3.
【００１４】 またモ−タ１４’の場合，上記キャップ１３の界磁マグネット位置決め突起１ ５によって界磁マグネット３をキャップ１３に保持させているが，このような界 磁マグネット３の位置決めによれば，界磁マグネット３を堅固に保持できず，外 径が３ｍｍ，４ｍｍといった小さな外径のカップ形コアレス振動モ−タを構成し ようとしても，界磁マグネット３とコアレス電機子５間の空隙長及びコアレス電 機子５と円筒形モ−タハウジング１’間の空隙長は，０．２ｍｍ前後と非常に狭 くなるため，発生振動などにより界磁マグネット３とコアレス電機子５とが，コ アレス電機子５と円筒形モ−タハウジング１’とが接触し，モ−タ１４’の破損 を招く欠点がある。Also, in the case of the motor 14 ′, the field magnet 3 is held by the cap 13 by the field magnet positioning protrusion 15 of the cap 13 described above. However, even if an attempt is made to construct a cup-type coreless vibration motor having a small outer diameter of 3 mm or 4 mm, which cannot hold the field magnet 3 firmly, the gap length between the field magnet 3 and the coreless armature 5 is increased. Also, since the gap length between the coreless electric armature 5 and the cylindrical motor housing 1'is very narrow, around 0.2 mm, the field magnet 3 and the coreless armature 5 will be There is a drawback that the ares armature 5 and the cylindrical motor housing 1'contact with each other and the motor 14 'is damaged.
【００１５】 即ち本考案の課題は，偏心カウンタが給電端子に接触しない給電端子付振動モ −タを得ること，またこれに用いる円筒形マイクロモ−タとして用いるカップ形 コアレスモ−タが１つのメタル軸承を用いることで，２つのメタル軸承の同心合 わせを省略し，キャップも省略して部品点数を減らし，構造を容易にして給電端 子付カップ形コアレス振動モ−タの製造を容易且つ安価に行えるようにすること ，シャフトの振れを十分に抑えることができるようにし，シャフトがメタル軸承 に過度の側圧を与えないようにし，騒音特性及び寿命特性を向上させること，シ ャフトの曲げを生じさせないようにすること，界磁マグネットの位置決めを容易 にすること，界磁マグネットを堅固に固定でき揺れがないようにすることで給電 端子付振動モ−タの破損の防止を図ること，長さの短い界磁マグネットを用いる ことができるようにし，安価に構成することにある。That is, an object of the present invention is to obtain a vibration motor with a power supply terminal in which an eccentric counter does not contact the power supply terminal, and a cup type coreless motor used as a cylindrical micromotor used for this has one metal bearing. The use of the two metal bearings eliminates the concentric alignment of the two metal bearings, reduces the number of parts by omitting the cap, and simplifies the structure, making the manufacture of a cup-type coreless vibration motor with power supply terminals easy and inexpensive. Doing so, making it possible to sufficiently suppress the runout of the shaft, prevent the shaft from exerting excessive lateral pressure on the metal bearing, improve noise characteristics and life characteristics, and prevent bending of the shaft. By making it easy, the positioning of the field magnet is easy, and the field magnet can be firmly fixed so that there is no shaking. The purpose is to prevent damage to the vibration motor with a child, to enable the use of a short-length field magnet, and to make it inexpensive.
【００１６】 また，別の課題は，界磁マグネットの磁束を十分に閉じることができるように して，カップ形コアレスモ−タの一端からの漏洩磁束が殆どないようにすること で，電流特性を向上させると共に，外径が３ｍｍや４ｍｍといった小さな給電端 子付カップ形コアレスモ−タの場合でも，モ−タ効率の良いものとし，ペ−ジャ 等の振動発生用としても十分に使用できるようにすることにある。Another object is to make it possible to close the magnetic flux of the field magnet sufficiently so that there is almost no leakage magnetic flux from one end of the cup-shaped coreless motor. In addition to improving the performance, even in the case of a cup type coreless motor with a feeding terminal such as a small outer diameter of 3 mm or 4 mm, the motor efficiency is improved and it can be sufficiently used for vibration generation of a pager. To do.
【００１７】[0017]
かかる本考案の課題は，偏心ウエイト１７の径方向の振れにより該偏心ウエイ ト１７の外周部１７ａと接触する惧れがある給電端子２５−１部に切欠や透孔な どの偏心ウエイト接触防止用逃げ部２６−１，２６−２を形成することで達成で きる。 The problem to be solved by the present invention is to prevent eccentric weight contact such as a notch or a through hole in the power supply terminal 25-1, which may be in contact with the outer peripheral portion 17a of the eccentric weight 17 due to the radial deflection of the eccentric weight 17. This can be achieved by forming the escape portions 26-1 and 26-2.
【００１８】 別の課題は，中心部に軸線方向に貫通したシャフト通し孔４を有する円筒状の メタル軸承２のマグネット装着部を構成するステ−タヨ−ク部２ａの外周部に周 方向に沿ってＮ極，Ｓ極の磁極を備えた２極の界磁マグネット３を固定し，上記 メタル軸承２の一端部を界磁マグネット３の一端部から延長突出させ，上記マグ ネット装着部２ａの外径よりも大きく形成した肥大部２ｂにより界磁マグネット ３の一端部を位置決め固定し，一端部を内周方向に突出形成して上記肥大部２ｂ の外径と略々一致する内径のメタル軸承圧入用突起部１ａを形成した磁性体でで きた円筒形モ−タハウジング１を備え，上記メタル軸承圧入用突起部１ａの軸方 向の長さは上記円筒形モ−タハウジング１の厚みよりも十分に長く形成しており ，上記肥大部２ｂの軸方向の長さは上記ステ−タヨ−ク部２ａの厚みよりも十分 に長く形成しており，且つ上記メタル軸承圧入用突起部１ａの軸方向の長さと同 じかそれ以上の長さに形成し，上記メタル軸承２の肥大部２ｂを上記メタル軸承 圧入用突起部１ａの内径部に圧入して，メタル軸承２を円筒形モ−タハウジング １に固定することで達成できる。Another problem is that the outer circumference of the stator yoke portion 2a, which constitutes the magnet mounting portion of the cylindrical metal bearing 2 having the shaft through hole 4 penetrating in the axial direction in the central portion, extends along the circumferential direction. The two-pole field magnet 3 having N-pole and S-pole magnetic poles is fixed, and one end of the metal bearing 2 is extended and protruded from one end of the field magnet 3 to extend outside the magnet mounting portion 2a. The one end portion of the field magnet 3 is positioned and fixed by the enlarged portion 2b formed to be larger than the diameter, and the one end portion is formed so as to project inward, so that the inner diameter of the metal shaft bearing press-fitted is approximately equal to the outer diameter of the enlarged portion 2b. The cylindrical motor housing 1 is made of a magnetic material and has a projection 1a for use. The axial length of the metal shaft bearing press-fitting projection 1a is greater than the thickness of the cylindrical motor housing 1. Is formed long enough, The axial length of the enlarged portion 2b is made sufficiently longer than the thickness of the stator yoke portion 2a, and is the same as the axial length of the metal shaft bearing press-fitting protrusion 1a. Achieved by forming the metal bearing 2 to the above length and press-fitting the enlarged portion 2b of the metal bearing 2 into the inner diameter of the protrusion 1a for press-fitting the metal bearing to fix the metal bearing 2 to the cylindrical motor housing 1. it can.
【００１９】 別の課題は，上記メタル軸承２を磁性体系メタル軸承とし，上記界磁マグネッ ト３の漏洩磁束を上記肥大部２ｂの外周側面部及びメタル軸承圧入用突起部１ａ を介して円筒形モ−タハウジング１に誘磁し，界磁マグネット３の磁路を閉じる ことで達成できる。Another problem is that the metal bearing 2 is a magnetic metal bearing, and the leakage magnetic flux of the field magnet 3 is cylindrical through the outer peripheral side surface of the enlarged portion 2b and the metal bearing press-fitting protrusion 1a. This can be achieved by magnetizing the motor housing 1 and closing the magnetic path of the field magnet 3.
【００２０】[0020]
第１実施例を中心に説明すると，カップ形コアレス振動モ−タ１２が回転し， シャフト９に取り付けた偏心ウエイト１７が高速回転し，その外周部１７ａが給 電端子２５−１に振れる位置にまで該偏心ウエイト１７の外周部１７ａが半径方 向に振れたとしても，給電端子２５−１に偏心ウエイト接触防止用逃げ部２６− １が形成されているため，偏心ウエイト１７の外周部１７ａが給電端子２５−１ と接触することがない。 The first embodiment will be mainly described. The cup-shaped coreless vibration motor 12 rotates, the eccentric weight 17 attached to the shaft 9 rotates at high speed, and the outer peripheral portion 17a of the cup-shaped coreless vibration motor 12 swings to the power supply terminal 25-1. Even if the outer peripheral portion 17a of the eccentric weight 17 is swung in the radial direction, the outer peripheral portion 17a of the eccentric weight 17 is formed because the eccentric weight contact preventing escape portion 26-1 is formed in the power supply terminal 25-1. There is no contact with the power supply terminal 25-1.
【００２１】 また円筒状メタル軸承２のステ−タヨ−ク部２ａの外周部に肥大部２ｂにより 界磁マグネット３１が形成されているため該界磁マグネット３をメタル軸承２に 固定する。メタルと接触することがない。筒形モ−タハウジング１のメタル軸承 圧入用突起部１ａの内径部に圧入固定し，メタル軸承２，界磁マグネット３及び 円筒形モ−タハウジング１を一体化すると共に，該円筒形モ−タハウジング１の 内周と界磁マグネット３の外周間に円筒形コアレス電機子５を介在させるための 径方向空隙６を形成する。整流子７を設けた整流子ハブ８を他端部に固定したシ ャフト９をシャフト通し孔４に通して円筒形コアレス電機子５を上記径方向空隙 ６内に回動自在にメタル軸承２によって軸承する。メタル軸承２は軸方向に長さ の長い１個のものにて形成しているので，メタル軸承２のシャフト通し孔４にシ ャフト９を容易に通すことができると共に，肥大部２ｂも軸方向に長く形成して いるので，シャフト９の振れを小さくできる。Since the field magnet 31 is formed on the outer peripheral portion of the stator yoke portion 2a of the cylindrical metal bearing 2 by the enlarged portion 2b, the field magnet 3 is fixed to the metal bearing 2. No contact with metal. The metal shaft bearing of the cylindrical motor housing 1 is press-fitted and fixed to the inner diameter portion of the press-fitting projection 1a, and the metal shaft bearing 2, the field magnet 3 and the cylindrical motor housing 1 are integrated, and the cylindrical motor A radial air gap 6 is formed between the inner periphery of the housing 1 and the outer periphery of the field magnet 3 for interposing the cylindrical coreless armature 5. A shaft 9 having a commutator hub 8 having a commutator 7 fixed to the other end thereof is passed through a shaft through hole 4 so that a cylindrical coreless armature 5 is rotatably supported in the radial gap 6 by a metal bearing 2. Bearing. Since the metal bearing 2 is formed of a single piece having a long axial direction, the shaft 9 can be easily passed through the shaft passage hole 4 of the metal bearing 2 and the enlarged portion 2b is also axially formed. Since it is formed long, the runout of the shaft 9 can be reduced.
【００２２】 以上のようにすることによりメタル軸承２の肥大部２ｂをモ−タハウジング１ の一部に構成し，キャップ１３を省くことができるので，またメタル軸承２を１ 個としたため，部品点数も少なくでき，構成も簡単になるので安価に製造できる 。また本考案に用いたメタル軸承２によれば，シャフト９をメタル軸承２に容易 に通すことができる。また上記メタル軸承２を磁性体系メタル軸承とした場合， 界磁マグネット３の漏洩磁束を上記肥大部２ｂの外周側面部及びメタル軸承圧入 用突起部１ａを介して円筒形モ−タハウジング１に誘磁し，界磁マグネット３の 磁路を閉じることができ，界磁マグネット３の磁束をカップ形コアレスモ−タ１ ２の一端部から外部に漏洩させない。このため，小型でもモ−タ効率を良くでき る。By doing so, the enlarged portion 2b of the metal bearing 2 can be configured as a part of the motor housing 1 and the cap 13 can be omitted. Moreover, since the metal bearing 2 is one, Since the number of points can be reduced and the configuration is simple, it can be manufactured at low cost. Further, according to the metal bearing 2 used in the present invention, the shaft 9 can be easily passed through the metal bearing 2. When the metal bearing 2 is a magnetic metal bearing, the leakage magnetic flux of the field magnet 3 is guided to the cylindrical motor housing 1 through the outer peripheral side surface of the enlarged portion 2b and the metal bearing press-fitting protrusion 1a. The magnetic field of the field magnet 3 can be closed and the magnetic flux of the field magnet 3 does not leak from one end of the cup-shaped coreless motor 12 to the outside. Therefore, the motor efficiency can be improved even if it is small.
【００２３】 上記肥大部２ｂは，シャフト９の振れを小さくするために，円筒形コアレス電 機子５のトルク発生に余り寄与しない導体部５ｂの部分と対向する位置にまで軸 方向に延びて形成されているので，該導体部５ｂと対向する部分まで十分に軸方 向の長さの長い界磁マグネット３に形成しなくてよく，すなわち，軸方向に短い 安価な界磁マグネット３を用いることができ，また界磁マグネット３を堅固に所 定の位置に位置決め固定できるので，界磁マグネット３と円筒形コアレス電機子 ５との接触不良を防ぐことができる。The enlarged portion 2b is formed so as to extend in the axial direction to a position facing the portion of the conductor portion 5b that does not contribute much to the torque generation of the cylindrical coreless electric element 5 in order to reduce the deflection of the shaft 9. Therefore, it is not necessary to form the field magnet 3 having a sufficiently long axial length up to the portion facing the conductor portion 5b, that is, to use the inexpensive field magnet 3 which is short in the axial direction. Further, since the field magnet 3 can be firmly positioned and fixed at a predetermined position, it is possible to prevent the contact failure between the field magnet 3 and the cylindrical coreless armature 5.
【００２４】[0024]
【第１実施例】 図１乃至図４を参照して，本考案の第１実施例としてのカップ形コアレスモ− タを用いた給電端子付カップ形コアレス振動モ−タ１２について，以下に説明す る。First Embodiment With reference to FIGS. 1 to 4, a cup type coreless vibration motor 12 with a power feeding terminal using a cup type coreless motor according to a first embodiment of the present invention will be described below. It
【００２５】 このモ−タ１２に用いるカップ形コアレスモ−タ１４も，モ−タ１４’同様に 円筒形コアレス電機子５，整流子ハブ８，この整流子ハブ８に形成した整流子片 からなる整流子７，整流子ハブ８の中心を貫通して整流子ハブ８に固定されたシ ャフト９からなる回転子を有する。電気伝導性の良い磁性体でできた外径４ｍｍ の円筒形モ−タハウジング１は，一端部を内周方向に突出形成して後記する肥大 部２ｂの外径と略々一致する内径のメタル軸承圧入用突起部１ａを一体形成した 厚みが０．６ｍｍのものに形成する。円筒形モ−タハウジング１は，その内面に 電気伝導性の良い材質のメッキを施してある。メタル軸承圧入用突起部１ａの軸 方向の長さは，１．５ｍｍに形成する。即ち，メタル軸承圧入用突起部１ａの軸 方向の長さは，円筒形モ−タハウジング１の厚みよりも十分に長く形成する。Like the motor 14 ′, the cup-shaped coreless motor 14 used for the motor 12 is also composed of a cylindrical coreless armature 5, a commutator hub 8, and a commutator piece formed on the commutator hub 8. The commutator 7 and the commutator hub 8 have a rotor including a shaft 9 penetrating through the centers of the commutator hub 8 and fixed to the commutator hub 8. A cylindrical motor housing 1 made of a magnetic material with good electrical conductivity and having an outer diameter of 4 mm has an inner diameter that is substantially the same as the outer diameter of an enlarged portion 2b described later with one end protruding inward. The bearing press-fitting projection 1a is integrally formed to have a thickness of 0.6 mm. The inner surface of the cylindrical motor housing 1 is plated with a material having good electric conductivity. The axial length of the metal shaft bearing press-fitting protrusion 1a is formed to be 1.5 mm. That is, the axial length of the metal shaft bearing press-fitting projection 1a is made sufficiently longer than the thickness of the cylindrical motor housing 1.
【００２６】 該円筒形モ−タハウジング１の他端開口部に，樹脂でできたブラシ台１１を装 着すると共に，後記するメタル軸承２と共にモ−タ本体を形成する。ブラシ台１ １の内面の外周部に一対のブラシ保持突起１９−１，１９−２を一体形成し，該 一対のブラシ保持突起１９−１，１９−２それぞれに一対のブラシ１０−１，１ ０−２を装着し，該ブラシ１０−１，１０−２を整流子片群からなる整流子７に 摺接させる。一方のブラシ１０−１は後記する給電端子２５−１によって図示せ ず正側電源端子に電気的に接続し，他方のブラシ１０−２は後記する給電端子２ ５−２によって図示せず負側電源端子に電気的に接続する。A brush base 11 made of resin is attached to the opening of the other end of the cylindrical motor housing 1, and a motor main body is formed together with a metal bearing 2 described later. A pair of brush holding projections 19-1 and 19-2 are integrally formed on the outer peripheral portion of the inner surface of the brush base 11, and the pair of brush holding projections 19-1 and 19-2 are respectively provided with the pair of brushes 10-1 and 19-2. 0-2 is attached, and the brushes 10-1 and 10-2 are brought into sliding contact with the commutator 7 composed of a commutator piece group. One brush 10-1 is electrically connected to a positive power supply terminal (not shown) by a power supply terminal 25-1 described later, and the other brush 10-2 is negative side not illustrated by a power supply terminal 2 5-2 described later. Electrically connect to the power terminal.
【００２７】 上記モ−タハウジング１の一端部外周に，電気伝導性の良い材質で形成した図 １に示すような給電端子２５−１の他端部を電気溶着手段などにて固定し，該給 電端子２５−１を偏心ウエイト１７の一端部よりも軸方向に長く延び形成してい る。ブラシ１０−１と電気的に接続された電気伝導性の良い材質で形成した接続 端子２７は樹脂でできたブラシ台１１を通してモ−タハウジング１に電気的に接 続し，上記給電端子２５−１と電気的に接続している。ブラシ１０−２と電気的 に接続された電気伝導性の良い材質で形成した給電端子２５−２は樹脂でできた ブラシ台１１を通して該ブラシ台１１の他端部を沿わし，上記給電端子２５−１ と高さが水平となるように，図１に示すようにモ−タハウジング１の他端部方向 に延長形成している。On the outer periphery of one end of the motor housing 1, the other end of the power supply terminal 25-1 made of a material having good electric conductivity as shown in FIG. 1 is fixed by an electric welding means or the like, The power supply terminal 25-1 is formed to extend axially longer than one end of the eccentric weight 17. The connection terminal 27, which is electrically connected to the brush 10-1 and is made of a material having good electrical conductivity, is electrically connected to the motor housing 1 through the brush base 11 made of resin, and the power supply terminal 25- It is electrically connected to 1. The power supply terminal 25-2, which is electrically connected to the brush 10-2 and is made of a material having good electrical conductivity, passes along the other end of the brush base 11 through the brush base 11 made of resin. It is formed so as to extend horizontally toward the other end of the motor housing 1 as shown in FIG.
【００２８】 上記給電端子２５−１には，モ−タ１２（１４）の回転により，部分円偏心し ながら回転する偏心ウエイト１７が径方向に振れた場合，その偏心ウエイト１７ の外周部１７ａと接触する惧れがある給電端子２５−１と対向する部分に透孔を 形成することで偏心ウエイト接触防止用逃げ部２６−１を形成している。給電端 子２５−１に偏心ウエイト接触防止用逃げ部２６−１を形成したため，図４に示 すようにシャフト９が点線２８位置から実線で示す位置に振れたとしても，偏心 ウエイト１７の外周部１７ａが偏心ウエイト接触防止用逃げ部２６−１に入り込 み，偏心ウエイト１７と給電端子２５−１が接触しないようにしている。When the eccentric weight 17 which rotates while being partially eccentric to the power supply terminal 25-1 is swung in the radial direction by the rotation of the motor 12 (14), the eccentric weight 17 and the outer peripheral portion 17 a of the eccentric weight 17 are rotated. An eccentric weight contact prevention escape portion 26-1 is formed by forming a through hole in a portion facing the power supply terminal 25-1 that may possibly contact. Since the escape portion 26-1 for preventing eccentric weight contact is formed on the power feeding terminal 25-1, even if the shaft 9 swings from the position indicated by the dotted line 28 to the position indicated by the solid line as shown in FIG. The portion 17a is inserted into the escape portion 26-1 for preventing contact with the eccentric weight so that the eccentric weight 17 and the power supply terminal 25-1 do not come into contact with each other.
【００２９】 円筒状の磁性体系，例えば鉄系で形成したメタル軸承２は，中心部に軸線方向 に貫通したシャフト通し孔４を形成する。シャフト通し孔４は，シャフト９の外 径と略々一致する内径のものに形成する。メタル軸承２は，界磁マグネット３の 軸方向の長さと同じ程度の長さの径の小さなステ−タヨ−ク部２ａの外周部に， 周方向に沿ってＮ極，Ｓ極の磁極を備えた２極の円筒形界磁マグネット３を挿入 し接着剤などを用いて固定する。A metal bearing 2 made of a cylindrical magnetic system, for example, an iron system, has a shaft through hole 4 formed at the center thereof and penetrating in the axial direction. The shaft through hole 4 is formed to have an inner diameter that substantially matches the outer diameter of the shaft 9. The metal bearing 2 is provided with magnetic poles of N pole and S pole along the circumferential direction on the outer peripheral portion of the stator yoke portion 2a having a diameter as small as the axial length of the field magnet 3. Then, the two-pole cylindrical field magnet 3 is inserted and fixed with an adhesive or the like.
【００３０】 上記メタル軸承２は，その一端部を界磁マグネット３の一端部から延長突出さ せて，上記ステ−タヨ−ク部２ａの外径よりも大きく形成した肥大部２ｂとし， ステ−タヨ−ク部２ａに段差をつけ，この肥大部２ｂによる段差によって界磁マ グネット３の一端部を位置決めして上記ステ−タヨ−ク部２ａの外周部に界磁マ グネット３を挿入固定する。この肥大部２ｂの外径は，上記メタル軸承圧入用突 起部１ａの内径と略々一致する大きさに形成する。従って，上記ステ−タヨ−ク 部２ａの外周部に肥大部２ｂに位置決めされるまで界磁マグネット３を挿入固定 することで，界磁マグネット３の外径と肥大部２ｂの外径が略々一致したものと なり，該界磁マグネット３及び該界磁マグネット付メタル軸承２（肥大部２ｂを 含む）の外周と円筒形モ−タハウジング１の内周面間の径方向空隙６の長さを一 定にできる。The metal bearing 2 has one end portion extended and projected from one end portion of the field magnet 3 to form an enlarged portion 2b formed larger than the outer diameter of the stator yoke portion 2a. The step portion 2a is provided with a step, the stepped portion formed by the enlarged portion 2b positions one end of the field magnet 3 and the field magnet 3 is inserted and fixed to the outer periphery of the starter portion 2a. . The outer diameter of the enlarged portion 2b is formed to have a size substantially matching the inner diameter of the metal shaft bearing press-fitting protrusion 1a. Therefore, the outer diameter of the field magnet 3 and the outer diameter of the enlarged portion 2b are substantially fixed by inserting and fixing the field magnet 3 on the outer peripheral portion of the stator yoke portion 2a until the enlarged portion 2b is positioned. The length of the radial gap 6 between the outer periphery of the field magnet 3 and the metal bearing 2 with the field magnet (including the enlarged portion 2b) and the inner peripheral surface of the cylindrical motor housing 1 is the same. Can be fixed.
【００３１】 上記円筒形モ−タハウジング１のメタル軸承圧入用突起部１ａの内径部に上記 メタル軸承２の肥大部２ｂを圧入して，当該メタル軸承２を円筒形モ−タハウジ ング１に固定し，該円筒形モ−タハウジング１の内周と界磁マグネット３の外周 間に円筒形コアレス電機子５を介在させるための径方向空隙６を形成する。The metal shaft bearing 2 is fixed to the cylindrical motor housing 1 by press-fitting the enlarged portion 2b of the metal shaft bearing 2 into the inner diameter of the metal shaft bearing press-fitting protrusion 1a of the cylindrical motor housing 1. Then, a radial gap 6 for interposing the cylindrical coreless armature 5 is formed between the inner circumference of the cylindrical motor housing 1 and the outer circumference of the field magnet 3.
【００３２】 上記肥大部２ｂの軸方向の長さは，該肥大部２ｂが円筒形コアレス電機子５の 一端部の斜めに導線が巻かれたトルクの発生に余り寄与しない導体部５ｂの部分 と対向する位置にまで長く延び形成する。従って，円筒形コアレス電機子５を後 記するように回動自在に支持した場合，界磁マグネット３は，円筒形コアレス電 機子５のトルクの発生に余り寄与しない導体部５ｂの部分全てと対向する長さの ものとせず，長さの短いものを用いることができる。即ち，長さの短い安価な界 磁マグネット３を用いることができる。尚，円筒形コアレス電機子５の場合，界 磁マグネット３のＮ極とＳ極の磁極境界部と平行によぎる軸方向に真っすぐ延び た真ん中の導体部５ａがトルクの発生に寄与する導体部となっている。The length of the enlarged portion 2b in the axial direction is the same as the portion of the conductor portion 5b in which the enlarged portion 2b has one end of the cylindrical coreless armature 5 and the conductor wire is obliquely wound and does not contribute much to the generation of torque. It is formed so as to extend to the opposite position. Therefore, when the cylindrical coreless armature 5 is rotatably supported as will be described later, the field magnet 3 includes all of the conductor portion 5b that does not contribute much to the torque generation of the cylindrical coreless armature 5. Instead of having opposing lengths, shorter lengths can be used. That is, an inexpensive field magnet 3 having a short length can be used. In the case of the cylindrical coreless armature 5, the central conductor portion 5a extending straight in the axial direction parallel to the magnetic pole boundary portion between the N pole and the S pole of the field magnet 3 serves as a conductor portion that contributes to torque generation. Has become.
【００３３】 上記整流子７を設けた整流子ハブ８を他端部に固定したシャフト９にルミラ− 等で形成した円環状の抜け止めボス２０を圧入して整流子ハブ８の他端面に固定 し，その上にルミラ−等で形成した円環状のライナ−２１を通し，界磁マグネッ ト３の一端面と抜け止めボス２０間の摺動を滑らかにさせる。A ring-shaped retaining boss 20 formed by a Lumirer or the like is press-fitted onto a shaft 9 having a commutator hub 8 provided with the above-mentioned commutator 7 fixed to the other end, and fixed to the other end surface of the commutator hub 8. Then, an annular liner-21 formed of Lumirer or the like is passed therethrough to smooth the sliding between the one end surface of the field magnet 3 and the retaining boss 20.
【００３４】 円筒形コアレス電機子５の他端部内周を上記整流子ハブ８の外周に接着などの 手段で固定し，整流子ハブ８の中心を貫通して整流子ハブ８に固定されたシャフ ト９をメタル軸承２のシャフト通し孔４内に通してメタル軸承２によって回転子 を回動自在に軸承することで，上記円筒形コアレス電機子５を上記界磁マグネッ ト３と円筒形モ−タハウジング１間の径方向空隙６内に回動自在に支持する。The inner circumference of the other end of the cylindrical coreless armature 5 is fixed to the outer circumference of the commutator hub 8 by means such as bonding, and the shuff is fixed to the commutator hub 8 through the center of the commutator hub 8. The core 9 is passed through the shaft through hole 4 of the metal bearing 2 so that the rotor is rotatably supported by the metal bearing 2 so that the cylindrical coreless armature 5 is coupled to the field magnet 3 and the cylindrical motor. It is rotatably supported in the radial gap 6 between the housings 1.
【００３５】 メタル軸承２のシャフト通し孔４内に通して，軸承メタル２の一端部から突出 させたシャフト９の一端部にルミラ−等で形成した円環状のライナ−２２を通し た後，更にルミラ−等で形成した円環状の抜け止めボス２３を圧入して，上記回 転子がモ−タ１２の一端部方向に抜け出ないようにし，偏心ウエイト１７のシャ フト通し孔２４に抜け止めボス２３から更に突出したシャフト９の一端部を挿入 固定する。接着剤を用いるか，偏心ウエイト１７を加締めることで，シャフト９ の一端部に偏心ウエイト１７を固定する。After passing through the shaft through hole 4 of the metal bearing 2 and passing an annular liner 22 formed of Lumirer or the like through one end of the shaft 9 protruding from one end of the metal bearing 2, A ring-shaped retaining boss 23 made of Lumir or the like is press-fitted to prevent the rotor from coming out toward one end of the motor 12, and the retaining boss is inserted into the shaft through hole 24 of the eccentric weight 17. One end of the shaft 9 further protruding from 23 is inserted and fixed. The eccentric weight 17 is fixed to one end of the shaft 9 by using an adhesive or by caulking the eccentric weight 17.
【００３６】 給電端子２５−２のある円筒形モ−タハウジング１の他端面が均一な厚みの面 となるように樹脂で形成した閉じ蓋２９をブラシ台１１の他端開口部に装着して いる。A closing lid 29 made of resin is attached to the opening of the other end of the brush base 11 so that the other end surface of the cylindrical motor housing 1 having the power supply terminal 25-2 has a uniform thickness. There is.
【００３７】[0037]
【第２実施例】 図５を参照して本考案の第２実施例としての給電端子付カップ形コアレス振動 モ−タ１２−１について，以下に説明する。[Second Embodiment] A cup type coreless vibration motor 12-1 with a power feeding terminal as a second embodiment of the present invention will be described below with reference to FIG.
【００３８】 このコアレス振動モ−タ１２−１は，上記コアレス振動モ−タ１２の給電端子 ２５−１の偏心ウエイト接触防止用逃げ部２６−１の両脇の２つの辺２５ａのう ちの１つの辺２５ａを更に切り欠いた偏心ウエイト接触防止用逃げ部２６−２を 有する給電端子２５−３となっている。偏心ウエイト接触防止用逃げ部２６−１ に比較して偏心ウエイト接触防止用逃げ部２６−２の形成位置を容易に選択でき る。他については，第１実施例同様である。The coreless vibration motor 12-1 has one of two sides 25a on both sides of the escape portion 26-1 for preventing eccentric weight contact of the power supply terminal 25-1 of the coreless vibration motor 12. This is a power supply terminal 25-3 having an eccentric weight contact prevention escape portion 26-2 in which one side 25a is further cut out. As compared with the escape portion 26-1 for preventing eccentric weight contact, the formation position of the escape portion 26-2 for preventing eccentric weight contact can be easily selected. Others are the same as in the first embodiment.
【００３９】[0039]
【第３実施例】 図６及び図７を参照して，考案の第３実施例としての給電端子付カップ形コア レス振動−タ１２−２について説明する。Third Embodiment With reference to FIGS. 6 and 7, a cup type coreless vibrator 12-2 with a power supply terminal will be described as a third embodiment of the invention.
【００４０】 この給電端子付カップ形コアレス振動−タ１２−２では，給電端子２５−１， ２５−２いずれもモ−タハウジング１と水平面上に位置するようにするため，先 ず円筒形モ−タハウジング１−１を円筒形のものに形成したカップ形コアレスモ −タ１４−１とする。そこでブラシ１０−２と電気的に接続された電気伝導性の 良い材質で形成した給電端子２５−２は樹脂でできたブラシ台１１を通して該ブ ラシ台１１の他端部を沿わし，上記円筒形モ−タハウジング１−１と高さが水平 となるように，図６及び図７に示すようにモ−タハウジング１の他端部方向に延 長形成している。また給電端子２５−１に代えて，円筒形モ−タハウジング１− １の一端部をその一端方向に延長して，上記給電端子２５−１同様の形状の給電 端子２５−４をモ−タハウジング１−１と一体形成している。In this cup-shaped coreless vibrator 12-2 with a power supply terminal, in order to locate both the power supply terminals 25-1 and 25-2 on the motor housing 1 and the horizontal plane, a cylindrical motor is first required. -A cup-shaped coreless motor 14-1 in which the motor housing 1-1 is formed in a cylindrical shape. Therefore, the power supply terminal 25-2, which is electrically connected to the brush 10-2 and is made of a material having good electrical conductivity, is passed through the brush base 11 made of resin along the other end of the brush base 11 to form the cylinder. As shown in FIGS. 6 and 7, the motor housing 1 is formed to extend in the direction of the other end of the motor housing 1 so that the height is horizontal to the shape of the motor housing 1-1. Further, instead of the power supply terminal 25-1, one end of the cylindrical motor housing 1-1 is extended in the direction of the one end, and a power supply terminal 25-4 having the same shape as the power supply terminal 25-1 is used as a motor. It is formed integrally with the housing 1-1.
【００４１】 上記形状のモ−タハウジング１−１としたため，上記メタル軸承２に代えて， 該メタル軸承２における肥大部２ｂ部分の上部を上記モ−タハウジング１−１の 一端開口部に圧入するに適した外径，即ち，肥大部２ｂの上部のモ−タハウジン グ１−１圧入部を更に外径の大きな肥大部２ｂ−１としたメタル軸承２−１を用 いている。他については，第１実施例同様である。Since the motor housing 1-1 has the above-described shape, the upper portion of the enlarged portion 2b of the metal bearing 2 is press-fitted into the one end opening of the motor housing 1-1 instead of the metal bearing 2. The metal bearing 2-1 has a suitable outer diameter, that is, the motor housing 1-1 press-fitting portion on the upper portion of the enlarged portion 2b is the enlarged portion 2b-1 having a larger outer diameter. Others are the same as in the first embodiment.
【００４２】[0042]
本考案の給電端子付振動モ−タによれば，この振動モ−タが回転し，シャフト に取り付けた偏心ウエイトが高速回転し，その外周部が給電端子に振れる位置に まで該偏心ウエイトの外周部が半径方向に振れたとしても，その給電端子に偏心 ウエイト接触防止用逃げ部が形成されているため，偏心ウエイトの外周部が給電 端子と接触することがない。従って，確実な振動を得ることができ，また偏心ウ エイトと給電端子の接触による摺動あるいは当接音が発生しないほか，寿命も長 く，品質の安定した給電端子付振動モ−タを得ることができる。 According to the vibration motor with a power supply terminal of the present invention, the vibration motor rotates, the eccentric weight attached to the shaft rotates at high speed, and the outer periphery of the eccentric weight swings to the power supply terminal. Even if the part swings in the radial direction, the eccentric weight contact prevention relief part is formed in the power supply terminal, so that the outer periphery of the eccentric weight does not contact the power supply terminal. Therefore, a reliable vibration can be obtained, and sliding or abutting noise due to the contact between the eccentric weight and the power supply terminal does not occur, and a vibration motor with a power supply terminal with a long life and stable quality is obtained. be able to.
【００４３】 またメタル軸承は１つなので，シャフトの挿入が極めて容易になる。しかも， そのメタル軸承はシャフトの振れを十分に抑えることができるため，シャフトが メタル軸承に過度の側圧を与えず，騒音特性及び寿命特性を向上し，しかもシャ フトの曲げが生じないため，径方向の空隙の長さが薄い紙の１枚分しかないよう な構造の３ｍｍや４ｍｍの小さな外径寸法の給電端子付カップ形コアレスモ−タ であっても信頼性の高いものを容易に製造できる。また本考案のメタル軸承によ れば，界磁マグネットの位置決めが容易で，界磁マグネットを堅固に固定でき， しかも長さの短い安価な界磁マグネットを用いることができる。Further, since there is only one metal bearing, insertion of the shaft becomes extremely easy. Moreover, since the metal bearing can sufficiently suppress the runout of the shaft, the shaft does not apply excessive lateral pressure to the metal bearing, improves the noise characteristics and the life characteristics, and does not bend the shaft, so that the diameter of the shaft can be reduced. A cup-shaped coreless motor with a feed terminal and a small outer diameter of 3 mm or 4 mm, which has a structure in which the length of the gap in the direction is only one sheet of thin paper, can be easily manufactured with high reliability. . Further, according to the metal bearing of the present invention, the field magnet can be easily positioned, the field magnet can be firmly fixed, and an inexpensive field magnet having a short length can be used.
【００４４】 また，本考案のメタル軸承によれば，界磁マグネットの磁束を十分に閉じるこ とができるためカップ形コアレス振動モ−タの一端からの漏洩磁束を殆どなくす ことができ，また界磁マグネットの磁束を閉じることで，電流特性も向上でき， 外径が３ｍｍ，４ｍｍといった小さな給電端子付カップ形コアレス振動モ−タの 場合でも，モ−タ効率を良好にでき，ペ−ジャ等の振動発生用としても十分に使 用できる。Further, according to the metal bearing of the present invention, the magnetic flux of the field magnet can be sufficiently closed, so that the leakage magnetic flux from one end of the cup-type coreless vibration motor can be almost eliminated, and the magnetic field can be eliminated. By closing the magnetic flux of the magnetic magnet, the current characteristics can also be improved, and even in the case of a cup-type coreless vibration motor with a small feed terminal such as an outer diameter of 3 mm or 4 mm, the motor efficiency can be improved and the pager etc. It can also be used sufficiently to generate vibrations.
【図１】 本考案の第１実施例を示すカップ形コアレス
モ−タを適用した給電端子付カップ形コアレス振動モ−
タの斜視図である。FIG. 1 is a cup-type coreless vibration motor with a power supply terminal to which the cup-type coreless motor according to the first embodiment of the present invention is applied.
FIG.
【図２】 同コアレス振動モ−タの縦断面図である。FIG. 2 is a vertical sectional view of the coreless vibration motor.
【図３】 同コアレス振動モ−タの分解斜視図である。FIG. 3 is an exploded perspective view of the coreless vibration motor.
【図４】 同コアレス振動モ−タの偏心ウエイトと給電
端子との関係を示す説明図である。FIG. 4 is an explanatory diagram showing a relationship between an eccentric weight of the coreless vibration motor and a power supply terminal.
【図５】 本考案の第２実施例を示すカップ形コアレス
モ−タを適用した給電端子付カップ形コアレス振動モ−
タの斜視図である。FIG. 5 is a cup-type coreless vibration motor with a feeding terminal to which the cup-type coreless motor according to the second embodiment of the present invention is applied.
FIG.
【図６】 本考案の第３実施例を示すカップ形コアレス
モ−タを適用した給電端子付カップ形コアレス振動モ−
タの斜視図である。FIG. 6 is a cup-shaped coreless vibration motor with a power supply terminal to which a cup-shaped coreless motor according to a third embodiment of the present invention is applied.
FIG.
【図７】 同コアレス振動モ−タの縦断面図である。FIG. 7 is a vertical sectional view of the coreless vibration motor.
【図８】 従来のカップ形コアレスモ−タを適用したカ
ップ形コアレス振動モ−タの斜視図である。FIG. 8 is a perspective view of a cup-shaped coreless vibration motor to which a conventional cup-shaped coreless motor is applied.
【図９】 同カップ形コアレス振動モ−タの縦断面図で
ある。FIG. 9 is a vertical cross-sectional view of the cup-shaped coreless vibration motor.
【図１０】 従来のカップ形コアレスモ−タを適用した
給電端子付カップ形コアレス振動モ−タの側面図であ
る。FIG. 10 is a side view of a cup-type coreless vibration motor with a power supply terminal to which a conventional cup-type coreless motor is applied.
【図１１】 同給電端子付カップ形コアレス振動モ−タ
の斜視図である。FIG. 11 is a perspective view of the cup-shaped coreless vibration motor with the power feeding terminal.
【図１２】 同給電端子付カップ形コアレス振動モ−タ
の問題が生ずる場合の説明図である。FIG. 12 is an explanatory diagram when a problem of the cup-shaped coreless vibration motor with the power feeding terminal occurs.
１，１−１，１’ 円筒形モ−タハウジング １ａ メタル軸承圧入用突起部 ２，２’−１，２’−２ メタル軸承 ２ａ ステ−タヨ−ク部 ２ｂ，２ｂ−１ 肥大部 ２ｃ−１，２ｃ−２ 軸承部 ３ 界磁マグネット ４ シャフト通し孔 ５ 円筒形コアレス電機子 ５ａ トルク発生に寄与する導体部 ５ｂ トルク発生に寄与しない導体部 ６ 径方向空隙 ７ 整流子 ８，８’ 整流子ハブ ９ シャフト １０，１０−１，１０−２ ブラシ １１，１１’ ブラシ台 １２，１２−１，１２−２ 給電端子付カップ形コアレ
ス振動モ−タ １２’ カップ形コアレス振動モ−タ １２’’ 給電端子付振動モ−タ １３ キャップ １４，１４−１ カップ形コアレスモ−タ １４’ 円筒形マイクロモ−タ［カップ形コアレスモ−
タ］ １５ 界磁マグネット位置決め突起 １６ リ−ド線 １７ 偏心ウエイト １７ａ 外周部 １８ 径方向空隙 １９−１，１９−２ ブラシ保持突起 ２０ 抜け止めボス ２１，２２ ライナ− ２３ 抜け止めボス ２４ シャフト通し孔 ２５−１，・・・，２５−４，２５’−１ 給電端子 ２６−１，２６−２ 給電端子接触防止用逃げ部 ２７ 接続端子 ２８ 点線 ２９ 閉じ蓋 ３０，３１ 点線1,1-1,1 'Cylindrical motor housing 1a Metal shaft bearing press-fitting protrusion 2,2'-1,2'-2 Metal shaft bearing 2a Steer yoke 2b, 2b-1 Enlarged part 2c- 1, 2c-2 Bearing part 3 Field magnet 4 Shaft through hole 5 Cylindrical coreless armature 5a Conductor part 5b contributing to torque generation 5b Conductor part not contributing to torque generation 6 Radial air gap 7 Commutator 8, 8'commutator Hub 9 Shaft 10, 10-1, 10-2 Brush 11, 11 'Brush stand 12, 12-1, 12-2 Cup type coreless vibration motor with power supply terminal 12' Cup type coreless vibration motor 12 '' Vibration motor with power supply terminal 13 Cap 14, 14-1 Cup type coreless motor 14 'Cylindrical micro motor [cup type coreless motor]
15 field magnet positioning protrusion 16 lead wire 17 eccentric weight 17a outer peripheral portion 18 radial gap 19-1, 19-2 brush holding protrusion 20 retaining boss 21, 22 liner 23 retaining boss 24 shaft through hole 25-1, ..., 25-4, 25'-1 Power supply terminal 26-1, 26-2 Power supply terminal Contact prevention escape portion 27 Connection terminal 28 Dotted line 29 Closing lid 30, 31 Dotted line
Claims (3)
突出したシャフト（９）に偏心ウエイト（１７）を取り
付けると共に，モ−タハウジング（１）の一端に上記偏
心ウエイト（１７）と対向する位置にまで延びた給電端
子（２５−１）を設けると共にモ−タハウジング（１）
の他端に装着したブラシ台（１１）側から給電端子（２
５−２）を引き出し，該給電端子（２５−１，２５−
２）のいずれか一方の給電端子を正側電源供給用のブラ
シ（１０−１）と電気的に結線し，他方の給電端子を負
側電源供給用のブラシ（１０−２）と電気的に結線する
ことで，上記マイクロモ−タ（１４）の両端に給電端子
（２５−１，２５−２）を設けた給電端子付振動モ−タ
において，上記偏心ウエイト（１７）の径方向の振れに
より該偏心ウエイト（１７）の外周部（１７ａ）と接触
する惧れがある給電端子（２５−１または２５−２）部
に切欠や透孔などの偏心ウエイト接触防止用逃げ部（２
６−１，２６−２）を形成したことを特徴とする給電端
子付振動モ−タ。1. An eccentric weight (17) is attached to a shaft (9) protruding from one end of a cylindrical micromotor (14), and the eccentric weight (17) is opposed to one end of a motor housing (1). And a motor housing (1) provided with a power supply terminal (25-1) extending to the position
From the side of the brush base (11) attached to the other end of the power supply terminal (2
5-2) and pull out the power supply terminals (25-1, 25-
One of the power supply terminals of 2) is electrically connected to the brush (10-1) for supplying positive power, and the other power supply terminal is electrically connected to the brush (10-2) for supplying negative power. In the vibration motor with the power feeding terminals in which the power feeding terminals (25-1, 25-2) are provided at both ends of the micro motor (14) by connecting, the radial deviation of the eccentric weight (17) causes An escape portion (2) for preventing contact with an eccentric weight such as a notch or a through hole in a power supply terminal (25-1 or 25-2) portion that is likely to contact the outer peripheral portion (17a) of the eccentric weight (17).
6-1 and 26-2) are formed. A vibration motor with a power supply terminal.
（１４）は，下記構成要素〜から構成されたカップ
形コアレスモ−タであることを特徴とする請求項１に記
載の給電端子付振動モ−タ。 中心部に軸線方向に貫通したシャフト通し孔（４）
を有する円筒状のメタル軸承（２）のマグネット装着部
（２ａ）の外周部に，周方向に沿ってＮ極，Ｓ極の磁極
を備えた界磁マグネット（３）を固定していること。 上記メタル軸承（２）の一端部を界磁マグネット
（３）の一端部から延長突出させ，上記マグネット装着
部（２ａ）の外径よりも大きく形成した肥大部（２ｂ）
により界磁マグネット（３）の一端部を位置決めしてい
ること。 一端部を内周方向に突出形成して上記肥大部（２
ｂ）の外径と略々一致する内径のメタル軸承圧入用突起
部（１ａ）を形成した磁性体でできた円筒形モ−タハウ
ジング（１）を備えていること。 上記メタル軸承圧入用突起部（１ａ）の軸方向の長
さは上記円筒形モ−タハウジング（１）の厚みよりも十
分に長く形成しており，上記肥大部（２ｂ）の軸方向の
長さは上記ステ−タヨ−ク部（２ａ）の厚みよりも十分
に長く形成しており，且つ上記メタル軸承圧入用突起部
（１ａ）の軸方向の長さと同じかそれ以上の長さに形成
していること。 上記メタル軸承（２）の肥大部（２ｂ）を上記メタ
ル軸承圧入用突起部（１ａ）の内径部に圧入して，メタ
ル軸承（２）を円筒形モ−タハウジング（１）に固定
し，該円筒形モ−タハウジング（１）の内周と界磁マグ
ネット（３）の外周間に円筒形コアレス電機子（５）を
介在させるための径方向空隙（６）を形成しているこ
と。 整流子（７）を設けた整流子ハブ（８）を他端部に
固定したシャフト（９）を上記シャフト通し孔（４）に
通してメタル軸承（２）によって回動自在に軸承してい
ること。 円筒形コアレス電機子（５）の他端部内周を上記整
流子ハブ（８）の外周に固定し，該円筒形コアレス電機
子（５）を上記界磁マグネット（３）と円筒形モ−タハ
ウジング（１）間の径方向空隙（６）内に回動自在に支
持していること。 上記整流子（７）と摺接するブラシ（１０−１，１
０−２）を保持したブラシ台（１１）を上記円筒形モ−
タハウジング（１）の他端に装着していること。2. The vibration motor with a power supply terminal according to claim 1, wherein the cylindrical micromotor (14) is a cup-shaped coreless motor composed of the following components. -Ta. Shaft through hole (4) that penetrates the center in the axial direction
A field magnet (3) having N-pole and S-pole magnetic poles is fixed to the outer peripheral portion of the magnet mounting portion (2a) of the cylindrical metal bearing (2) having the above. An enlarged portion (2b) formed by making one end of the metal bearing (2) extend and protrude from one end of the field magnet (3) to be larger than the outer diameter of the magnet mounting portion (2a).
Position one end of the field magnet (3) with. One end is formed so as to project inward, and the enlarged portion (2
Provided is a cylindrical motor housing (1) made of a magnetic material and having a metal shaft bearing press-fitting projection (1a) having an inner diameter substantially matching the outer diameter of (b). The axial length of the metal shaft bearing press-fitting protrusion (1a) is made sufficiently longer than the thickness of the cylindrical motor housing (1), and the axial length of the enlarged portion (2b). The length is formed to be sufficiently longer than the thickness of the stator yoke portion (2a), and is equal to or longer than the axial length of the metal shaft bearing press-fitting protrusion portion (1a). Doing things. The metal shaft bearing (2) is fixed to the cylindrical motor housing (1) by press-fitting the enlarged part (2b) of the metal shaft bearing (2) into the inner diameter part of the metal shaft bearing press fitting projection (1a). A radial gap (6) for interposing a cylindrical coreless armature (5) is formed between the inner circumference of the cylindrical motor housing (1) and the outer circumference of the field magnet (3). A shaft (9) having a commutator hub (8) provided with a commutator (7) fixed to the other end is passed through the shaft through hole (4) and is rotatably supported by a metal bearing (2). thing. The inner circumference of the other end of the cylindrical coreless armature (5) is fixed to the outer circumference of the commutator hub (8), and the cylindrical coreless armature (5) is connected to the field magnet (3) and the cylindrical motor. It is rotatably supported in the radial gap (6) between the housings (1). Brushes (10-1, 1) that are in sliding contact with the commutator (7)
0-2) holding the brush stand (11) to the cylindrical mold.
Be attached to the other end of the housing (1).
ル軸承とし，上記界磁マグネット（３）の漏洩磁束を上
記肥大部（２ｂ）の外周側面部及びメタル軸承圧入用突
起部（１ａ）を介して円筒形モ−タハウジング（１）に
誘磁し，上記界磁マグネット（３）の磁路を閉じている
ことを特徴とする請求項２に記載の給電端子付振動モ−
タ。3. The metal bearing (2) is a magnetic metal bearing, and the leakage magnetic flux of the field magnet (3) is applied to the outer peripheral side surface of the enlarged portion (2b) and the metal bearing press-fitting protrusion (1a). The vibration motor with a power supply terminal according to claim 2, wherein the magnetic field is magnetized to the cylindrical motor housing (1) through the magnetic field and the magnetic path of the field magnet (3) is closed.
Ta.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1994007025U JP3004537U (en) | 1994-05-24 | 1994-05-24 | Vibration motor with power supply terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1994007025U JP3004537U (en) | 1994-05-24 | 1994-05-24 | Vibration motor with power supply terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3004537U true JP3004537U (en) | 1994-11-22 |
Family
ID=43140460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1994007025U Expired - Lifetime JP3004537U (en) | 1994-05-24 | 1994-05-24 | Vibration motor with power supply terminal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3004537U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008199590A (en) * | 2008-01-15 | 2008-08-28 | Matsushita Electric Ind Co Ltd | Vibrator holding apparatus and wireless device with the same |
| JP2009213162A (en) * | 1996-08-29 | 2009-09-17 | Panasonic Corp | Vibrator holding apparatus and radio device having therewith |
-
1994
- 1994-05-24 JP JP1994007025U patent/JP3004537U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009213162A (en) * | 1996-08-29 | 2009-09-17 | Panasonic Corp | Vibrator holding apparatus and radio device having therewith |
| JP2008199590A (en) * | 2008-01-15 | 2008-08-28 | Matsushita Electric Ind Co Ltd | Vibrator holding apparatus and wireless device with the same |
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