JP2003245608A - Counterweight for vibration motor and vibration motor - Google Patents

Counterweight for vibration motor and vibration motor

Info

Publication number
JP2003245608A
JP2003245608A JP2002048654A JP2002048654A JP2003245608A JP 2003245608 A JP2003245608 A JP 2003245608A JP 2002048654 A JP2002048654 A JP 2002048654A JP 2002048654 A JP2002048654 A JP 2002048654A JP 2003245608 A JP2003245608 A JP 2003245608A
Authority
JP
Japan
Prior art keywords
weight
vibration motor
motor
output shaft
vibration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2002048654A
Other languages
Japanese (ja)
Other versions
JP3958981B2 (en
Inventor
Takafumi Yasuda
尚文 安田
Hideta Uchiumi
秀太 内海
Mikako Yoshida
美佳子 吉田
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.)
Namiki Precision Jewel Co Ltd
Original Assignee
Namiki Precision Jewel 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 Namiki Precision Jewel Co Ltd filed Critical Namiki Precision Jewel Co Ltd
Priority to JP2002048654A priority Critical patent/JP3958981B2/en
Publication of JP2003245608A publication Critical patent/JP2003245608A/en
Application granted granted Critical
Publication of JP3958981B2 publication Critical patent/JP3958981B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Telephone Function (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a counterweight for a vibration motor relatively easily subjected to molding processing and capable of reducing defectiveness at the time of attachment to the motor, and the vibration motor reduced in weight while keeping generated vibration quantity and low in production cost. <P>SOLUTION: The counterweight 1 for the vibration motor generating vibration is fixed to the output shaft of the vibration motor and comprises a plate-like member of which the shape has a curved surface so as to form one arc. Further, the vibration motor is constituted so that the curved surface of the counterweight 1 for the vibration motor is mounted in a direction coinciding with the rotary circumferential direction of the output shaft of the motor using an attaching appliance (metal plate 2) constituted of one metal plate-like member having a holding part 3 for holding the counterweight 1 for the vibration motor so as to always make the same eccentric with respect to the output shaft 30 of the vibration motor and an insertion part 20 permitting the insertion of the output shaft 30 of the vibrator to fix the output shaft. <P>COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、例えば、携帯電話
機等におけるアラーム機能の一つである、体感振動によ
る無音呼び出しモードに用いられる振動モータ、およ
び、振動モータの振動発生に用いられる偏心分銅の形状
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a vibration motor used in a silent calling mode due to sensory vibration, which is one of alarm functions in a mobile phone, and an eccentric weight used for generating vibration of the vibration motor. Regarding the shape.

【0002】[0002]

【従来の技術】一般的にこの種の振動モータは、モータ
の出力軸に半円筒状の分銅を、偏心した状態で取り付け
ることにより、モータの出力軸が回転した時に振れ回り
による振動力を発生するように構成されている。このよ
うに、振動モータの振動発生に用いられる偏心分銅F
は、小型の円筒型コアレスモータを例に取ると、図5に
示すように、振動モータMの出力軸Sを挿通する挿通孔
Cを分銅全体にわたって偏倚した位置に配置した外観形
状として、タングステン等の高比重合金を焼結すること
により一体型に形成されていることが多い。
2. Description of the Related Art Generally, in this type of vibration motor, a semi-cylindrical weight is attached to the output shaft of the motor in an eccentric state to generate a vibration force due to whirling when the output shaft of the motor rotates. Is configured to. In this way, the eccentric weight F used to generate the vibration of the vibration motor F
Taking a small-sized cylindrical coreless motor as an example, as shown in FIG. 5, tungsten or the like is used as an external shape in which an insertion hole C for inserting the output shaft S of the vibration motor M is arranged at a position offset over the entire weight. It is often formed as an integral type by sintering the high ratio heavy alloy.

【0003】モータ出力軸への分銅の固定は、例えば、
振動モータの出力軸を挿通孔に挿入して、挿通孔の外周
から圧力をかけて挿通孔の一部を変形させる、いわゆる
かしめ固定によって行うことができる。
The weight is fixed to the motor output shaft by, for example,
This can be performed by so-called caulking fixing, in which the output shaft of the vibration motor is inserted into the insertion hole and pressure is applied from the outer periphery of the insertion hole to deform a part of the insertion hole.

【0004】[0004]

【発明が解決しようとする課題】ところで、振動モータ
は、小型で、かつ、より大きな振動力が得られることが
望ましいため、その振動発生部である分銅には、主に高
比重であるタングステン合金が用いられている。
By the way, since it is desirable that the vibration motor is small and obtains a larger vibration force, the weight which is the vibration generating portion is mainly made of a tungsten alloy having a high specific gravity. Is used.

【0005】しかしながら、この主たる材料であるタン
グステンは、材料価格が他の金属に比べ高く、必然的に
部品製造コストが高くなってしまう。また、非常に硬い
材質であるため成形加工が難しく、モータの出力軸を挿
入するための挿通孔を設けるような加工においては、振
動モータの小型化が進んでいることもあり、その加工精
度を高精度に保つことは非常に難しい。さらに、分銅の
モータへの取り付けに関しても、出力軸にかしめ固定す
るための外圧力による材料の割れ、あるいは、固定不良
等のいくつかの問題があり、工程における歩留りの低下
を引き起こしている。これは、結果として、製造コスト
の増加の原因となっている。
However, tungsten, which is the main material, has a higher material cost than other metals, which inevitably increases the cost for manufacturing parts. In addition, since it is a very hard material, it is difficult to form it.Therefore, in the case of forming an insertion hole for inserting the output shaft of the motor, the vibration motor may be downsized, so It is very difficult to maintain high precision. Further, regarding attachment of the weight to the motor, there are some problems such as cracking of the material due to external pressure for caulking and fixing to the output shaft, or improper fixing, which causes a decrease in yield in the process. This results in increased manufacturing costs.

【0006】また一方で、振動モータは、電源として携
帯電話機の二次バッテリーを使用することが多いことか
ら、少ない消費電力でも起動するように、モータ全体或
いは分銅部分を軽量でコンパクトなものに構成すること
も望まれている。
On the other hand, since the vibration motor often uses a secondary battery of a mobile phone as a power source, the whole motor or weight portion is constructed to be lightweight and compact so that it can be started with a small power consumption. It is also desired to do.

【0007】本発明は、前記課題に鑑みてなされたもの
であり、その目的は、成型加工が比較的容易であり、モ
ータへの取り付け時の固定不良を減少することが可能な
振動モータ用分銅を提供することにある。
The present invention has been made in view of the above problems, and an object thereof is a weight for a vibration motor, which is relatively easy to mold and can reduce improper fixing at the time of attachment to the motor. To provide.

【0008】また、本発明は、発生する振動量を現状維
持しつつ軽量化することができ、さらには、製造コスト
の安価な振動モータを提供することにある。
Another object of the present invention is to provide a vibration motor which can reduce the weight while maintaining the amount of vibration that is generated, and which is inexpensive to manufacture.

【0009】[0009]

【課題を解決するための手段】これらの課題を解決する
ために、本発明は、モータの出力軸に固定される振動発
生用の分銅であって、板状部材からなり、かつ、前記板
状部材の形状が一つの弧を形成するように曲面を有する
ことを特徴とする振動モータ用分銅を提供するものであ
る。
In order to solve these problems, the present invention is a weight for vibration generation fixed to an output shaft of a motor, which is composed of a plate-shaped member, There is provided a weight for a vibration motor, wherein the shape of the member has a curved surface so as to form one arc.

【0010】すなわち、本発明は、分銅を、板状部材全
体で一つの弧を形成するような曲面を有する形状として
いるため、モータの出力軸に装着したときに振動量の発
生に大きく寄与する部分のみをタングステン合金等の高
比重合金で形成することができる。
That is, according to the present invention, since the weight has a shape having a curved surface that forms one arc in the whole plate-like member, it greatly contributes to the generation of the vibration amount when mounted on the output shaft of the motor. Only a portion can be formed of high specific heavy alloy such as tungsten alloy.

【0011】また、振動モータ用分銅を、前記振動モー
タ用分銅の回転方向両側から挟み込んでモータの出力軸
に対して常に偏心させて保持する保持部と、振動モータ
の出力軸を挿通し、固定するための挿通部と、を有する
一枚の金属製の板状部材により構成される取付具を用い
て、本発明に係る振動モータ用分銅の前記曲面をモータ
の出力軸の回転円周方向と一致する方向に装着すること
を特徴とする振動モータを提供するものである。
Further, a holding portion for sandwiching the vibration motor weight from both sides in the rotation direction of the vibration motor weight and holding it by always eccentric to the output shaft of the motor, and inserting and fixing the output shaft of the vibration motor. And a mounting member configured by a single metal plate-shaped member having an insertion portion for performing the rotation of the output shaft of the motor in the circumferential direction of the curved surface of the weight for the vibration motor according to the present invention. The present invention provides a vibration motor that is mounted in the same direction.

【0012】すなわち、本発明の振動モータ用分銅の保
持及びモータの出力軸への取付け固定を、一枚の金属製
の板状部材により形成される取付具により簡単に行うこ
とができ、また、分銅と取付具からなる振動発生部全体
の重量を低減させることができる。さらに、取付具は、
一般的な金属性素材でよいため、簡単にかつ強固で信頼
性のある固定を行うことができ、これにより振動モータ
自体の信頼性を向上することができる。
That is, the weight for the vibration motor of the present invention can be held and fixed to the output shaft of the motor easily by a fixture formed by a single plate member made of metal. It is possible to reduce the weight of the entire vibration generating unit including the weight and the fixture. Furthermore, the fixture is
Since a general metallic material may be used, the fixing can be performed easily, firmly and reliably, and the reliability of the vibration motor itself can be improved.

【0013】また、前記取付具の前記保持部が、前記挿
通部を中心として、前記挿通部から前記振動モータ用分
銅の回転方向に交互に伸びて形成される延伸部を有する
とともに、前記振動モータ用分銅の回転方向両側から挟
み込んで保持することにより、前記延伸部が前記回転方
向に押し広げられながら引っ張られて前記挿通部がモー
タの出力軸を締め付け固定する構造とすることもでき
る。
Further, the holding portion of the fixture has extending portions formed by alternately extending from the inserting portion in the rotation direction of the vibration motor weight with the inserting portion as a center, and the vibration motor is provided. By sandwiching and holding the working weight from both sides in the rotation direction, the extending portion may be pulled while being expanded in the rotation direction, and the insertion portion may tighten and fix the output shaft of the motor.

【0014】すなわち、保持部が挿通部から交互に延び
る延伸部を有しているため、振動モータ用分銅を挟み込
んで保持すると、挿通部がモータの出力軸を締め付けて
モータへの分銅の取付けを行うことができる。したがっ
て、振動モータ用分銅の保持と出力軸への振動モータ用
分銅の固定を同時に行うことができる。
That is, since the holding portion has the extending portions alternately extending from the insertion portion, when the weight for the vibration motor is sandwiched and held, the insertion portion tightens the output shaft of the motor to attach the weight to the motor. It can be carried out. Therefore, the weight for the vibration motor can be held and the weight for the vibration motor can be fixed to the output shaft at the same time.

【0015】さらに、本発明の振動モータを取り付けた
携帯用通信機器を提供するものであり、本発明の振動モ
ータを取り付けることで、軽量モータに使用される消費
電力を抑えることができ、また、携帯用通信機器の軽量
小型化を図ることができる。
Further, the present invention provides a portable communication device to which the vibration motor of the present invention is attached. By attaching the vibration motor of the present invention, the power consumption used in a lightweight motor can be suppressed, and It is possible to reduce the weight and size of the portable communication device.

【0016】[0016]

【発明の実施の形態】以下、本発明に係る振動モータ用
分銅の実施の一形態を、図面を適宜参照しながら説明す
る。なお、本発明に係る振動モータ用分銅は、本実施の
形態に説明されるものに限定されるものではない。
BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a weight for a vibration motor according to the present invention will be described below with reference to the drawings. The vibration motor weight according to the present invention is not limited to that described in the present embodiment.

【0017】本発明に係る振動モータ用分銅は、図1に
示すように、四角形状の高比重合金焼結体であるタング
ステン合金製の板状部材を、プレス成形により板全体が
弧を形成するように曲面を有する形状に形成している。
つまり、板状部材の板面を正面とすると、一方の側面視
で円弧状となり、全体としてみると円筒を軸方向2箇所
で切断した形状(以後、「部分円筒形状」とする)とな
る。
As shown in FIG. 1, a weight for a vibration motor according to the present invention is formed by pressing a plate-shaped member made of a tungsten alloy, which is a quadrangular high-specific-heavy-gold alloy sintered body, into an arc. Is formed in a shape having a curved surface.
That is, when the plate surface of the plate-shaped member is the front surface, it has an arc shape in one side view, and when viewed as a whole, it has a shape obtained by cutting a cylinder at two axial positions (hereinafter referred to as a “partial cylindrical shape”).

【0018】この部分円筒形状の分銅1を、一枚の金属
製の板状部材の取付具である金属板2を用いてモータ本
体5の出力軸30に固定する。金属板2は、分銅1の対
向する一組の直線部10,10’の辺の長さと同等の長
さを短辺とし、また、両長辺部分には突片を有する略長
方形形状である。この略長方形状の金属板2の略中央に
は、図2に示すように、モータ本体の出力軸を挿入する
ための孔である挿通部20を形成しており、また、両端
部には、分銅1の直線部10,10’を覆うように鉤状
に折曲げ部23,23’、また、モータ本体5の出力軸
30からの回転を分銅1に伝えるとともに、分銅1と出
力軸30の距離を一定に保つための支持部21を有して
いる。この折曲げ部23,23’と支持部21により、
部分円筒形状の分銅1を、モータの出力軸30に対して
常に偏心させて保持する保持部3を構成している。
The partially cylindrical weight 1 is fixed to the output shaft 30 of the motor body 5 by using a metal plate 2 which is a fixture for a single metal plate member. The metal plate 2 has a short side having a length equal to the length of the side of the pair of straight line portions 10 and 10 'facing each other of the weight 1, and has a substantially rectangular shape having protrusions on both long side portions. . As shown in FIG. 2, an insertion portion 20 that is a hole for inserting the output shaft of the motor body is formed in the substantially center of the substantially rectangular metal plate 2, and both end portions are In addition to transmitting the rotation from the output shaft 30 of the motor main body 5 to the weight 1, the bent portions 23 and 23 ′ are hooked so as to cover the straight portions 10 and 10 ′ of the weight 1, and the weight 1 and the output shaft 30 It has a supporting portion 21 for keeping the distance constant. With the bent portions 23, 23 'and the support portion 21,
A holding portion 3 that always holds the partially cylindrical weight 1 eccentrically with respect to the output shaft 30 of the motor is configured.

【0019】すなわち、一枚の略長方形形状の板状部材
からなる金属板2は、挿通部20を円の中心とした場
合、折曲げ部23,23’が円周の一部、支持部21が
折曲げ部23,23’により形成される円の半径を形成
している外観形状を有する取付具である。このように、
挿通部20、折曲げ部23,23’および支持部21に
より構成される保持部3を有する板状の取付具である金
属板2により、部分円筒形状の分銅1を保持・固定する
方法を以下に説明する。
That is, in the metal plate 2 made of one substantially rectangular plate-shaped member, when the insertion portion 20 is the center of the circle, the bent portions 23 and 23 'are part of the circumference and the support portion 21. Is a fixture having an external shape that forms the radius of the circle formed by the bent portions 23 and 23 '. in this way,
A method of holding and fixing the partial cylindrical weight 1 by the metal plate 2 which is a plate-shaped fixture having the holding portion 3 configured by the insertion portion 20, the bent portions 23, 23 'and the support portion 21 will be described below. Explained.

【0020】図2に示すように、まず、分銅1の両側の
直線部10,10’を金属板2の両折曲げ部23,2
3’にそれぞれ分銅1の直線部10,10’を挿入し、
金属板2によって分銅1を挟み込むように保持する。そ
の後、挿入した分銅1が落ちないように折曲げ部23,
23’で両側から絞め付けるように、両側の支持部21
を引き寄せ、略長方形の金属板2の長辺それぞれに有し
ている2つの突片22で各々相対する支持部21を挟み
込み固定する。つまり、各支持部21の有する突片22
により、もう一方の支持部21を挟み込み、対向する支
持部21を固定し合う構造である。
As shown in FIG. 2, first, the straight portions 10 and 10 ′ on both sides of the weight 1 are bent into the bent portions 23 and 2 of the metal plate 2.
Insert straight parts 10 and 10 'of weight 1 into 3',
The weight 1 is held so as to be sandwiched by the metal plates 2. After that, the bent portion 23, so that the inserted weight 1 does not fall
23 ', so that the support portions 21 on both sides are tightened from both sides.
And the supporting portions 21 facing each other are sandwiched and fixed by the two protruding pieces 22 provided on each of the long sides of the substantially rectangular metal plate 2. That is, the protruding piece 22 of each supporting portion 21
Thus, the other supporting portion 21 is sandwiched and the opposing supporting portions 21 are fixed to each other.

【0021】このように折曲げ部23,23’により分
銅1を両側から挟み込み、その後、分銅1が落ちないよ
うに支持部21を固定することで、一枚の金属製の板状
部材である金属板2(取付具)に形成された保持部3で
部分円筒形状の分銅1を保持・固定することができる。
ここで、分銅1に対する保持に関しては、保持部3で分
銅1を狭持するだけでなく、その保持力をより大きいも
のにするために、折曲げ部23,23’と直線部10,
10’との間に接着剤を併用しても良い。
In this way, the weight 1 is sandwiched by the bent portions 23 and 23 'from both sides, and then the supporting portion 21 is fixed so that the weight 1 does not fall, thereby forming a single plate member made of metal. The partially cylindrical weight 1 can be held and fixed by the holding portion 3 formed on the metal plate 2 (mounting tool).
Here, regarding holding to the weight 1, not only the holding portion 3 holds the weight 1 but also the bending portions 23 and 23 'and the straight portion 10, in order to increase the holding force thereof.
An adhesive may be used together with 10 '.

【0022】保持部3により分銅1を保持した金属板2
のモータ本体5への固定方法としては、挿通部20にモ
ータ本体5の出力軸30を挿入し、この状態で外側から
圧力をかけて挿通部20を変形させて固定する方法があ
る。あるいは、接着剤や半田を用いて簡単に接着固定す
る方法等もあるが、この他、固定することが可能な方法
であれば色々な固定方法を用いることができる。このよ
うに、取付具である金属板2の挿通部20とモータの出
力軸を固定することにより、部分円筒形状の分銅の曲面
をモータの出力軸30の回転円周方向と一致する方向に
装着することができる。
Metal plate 2 holding weight 1 by holding portion 3
As a method of fixing to the motor main body 5, there is a method of inserting the output shaft 30 of the motor main body 5 into the insertion portion 20 and applying pressure from the outside in this state to deform the insertion portion 20 and fix it. Alternatively, there is a method of simply adhering and fixing using an adhesive or solder, but in addition to this, various fixing methods can be used as long as they can be fixed. In this way, by fixing the insertion portion 20 of the metal plate 2 which is the fixture and the output shaft of the motor, the curved surface of the partially cylindrical weight is mounted in the direction that matches the circumferential direction of rotation of the output shaft 30 of the motor. can do.

【0023】以上に説明したように、本発明の振動モー
タは、一枚の板状部材に保持部3と相通部20とを形成
した金属板2を用いることで、簡単に分銅1をモータ本
体5に装着することが可能である。また、この構造は出
力軸30から分銅1までの距離が、支持部21、すなわ
ち、金属板2の長辺の長さにより調節することが可能で
ある。さらに、分銅の形状については、図5に示すよう
に、両直線部がテーパを形成する形状であってもよい。
この形状の分銅を用いた場合においても、取付具が一枚
の板状部材から挿通部と保持部を形成しているため、折
曲げ部の形成時に折曲げる位置を調節することで簡単に
保持部を分銅の形状に対応することが可能である。
As described above, in the vibration motor of the present invention, by using the metal plate 2 in which the holding portion 3 and the communicating portion 20 are formed in one plate-shaped member, the weight 1 can be easily attached to the motor body. It is possible to attach to 5. Further, in this structure, the distance from the output shaft 30 to the weight 1 can be adjusted by the length of the long side of the support portion 21, that is, the metal plate 2. Further, as for the shape of the weight, as shown in FIG. 5, both linear portions may be tapered.
Even when a weight of this shape is used, the fixture forms the insertion part and the holding part from a single plate-shaped member, so it can be easily held by adjusting the bending position when forming the bending part. It is possible for the part to correspond to the shape of the weight.

【0024】一般的に、偏心分銅を用いる振動モータの
振動発生力は、モータに装着された分銅の外周部分の重
さが大きく影響する。本発明の部分円筒形状の分銅は、
モータ本体に組み付けたときに、従来型の分銅の外周部
分と丁度一致する形状であり、出力軸から分銅内周部分
までの中間部分は抜けている構造となるものである。こ
のように、振動力に大きく寄与する部分のみをタングス
テン合金等の高比重の材料で形成しているため、振動力
を保ったままで、振動モータ全体の重量を軽量化するこ
とが可能である。また、部分円筒形状の分銅を用いるこ
とにより、タングステンのような高価な材料の使用量を
大幅に減らすことができ、よって、分銅の製造コストを
下げることができる。
Generally, the vibration generating force of a vibration motor using an eccentric weight is greatly influenced by the weight of the outer peripheral portion of the weight attached to the motor. The partial cylindrical weight of the present invention is
When assembled to the motor body, the shape is exactly the same as the outer peripheral portion of the conventional weight, and the intermediate portion from the output shaft to the inner peripheral portion of the weight is removed. As described above, since only the portion that greatly contributes to the vibration force is formed of the material having a high specific gravity such as the tungsten alloy, it is possible to reduce the weight of the entire vibration motor while maintaining the vibration force. Further, by using the partially cylindrical weight, it is possible to significantly reduce the amount of expensive material such as tungsten used, and thus it is possible to reduce the manufacturing cost of the weight.

【0025】また、本発明は、分銅を、板状の金属製の
取付具(金属板2)を用いてモータ本体の出力軸30に
固定する構造である。このため、従来の、振動モータの
出力軸を挿入するための挿通孔を一体に設けている分銅
のように、硬くて高比重な材料に挿通孔を設ける必要が
なく、困難な加工工程を必要としない。したがって、製
造も比較的容易であり歩留りを大きく向上させることが
できる。
Further, the present invention has a structure in which the weight is fixed to the output shaft 30 of the motor body by using a plate-shaped metal fixture (metal plate 2). For this reason, unlike the conventional weight, which has an insertion hole for inserting the output shaft of the vibration motor integrally formed therein, it is not necessary to provide the insertion hole in a hard and high specific gravity material, and a difficult machining process is required. Not. Therefore, manufacturing is relatively easy, and the yield can be greatly improved.

【0026】ここで、金属板2の形状は、前記の図2に
示される形状に限定されるものではなく、部分円筒状の
分銅1を保持するための別の態様を以下に示す。
Here, the shape of the metal plate 2 is not limited to the shape shown in FIG. 2, and another mode for holding the partially cylindrical weight 1 will be shown below.

【0027】図3に示すように、一枚の板状部材からな
る取付具である金属板2において、前態様と同様に略中
央部に挿通部20を形成し、両端部には分銅1を両側か
ら挟み込んで保持するための折曲げ部25,25’を形
成している。ここで、折曲げ部25,25’は、挿通部
20を中心として左右交互に折り曲げられ挿通部20か
ら伸びて形成される延伸部24の端部に位置し、この折
曲げ部25,25’と延伸部24とから保持部3を形成
して分銅1を保持する構造である。
As shown in FIG. 3, in a metal plate 2 which is a fixture made of a single plate-shaped member, an insertion portion 20 is formed in the substantially central portion and a weight 1 is provided at both end portions as in the previous embodiment. Bent portions 25, 25 'for sandwiching and holding from both sides are formed. Here, the bent portions 25, 25 ′ are located at the ends of the extending portions 24 formed by bending the insertion portions 20 alternately in the left and right directions and extending from the insertion portions 20, and the bent portions 25, 25 ′. The holding part 3 is formed from the drawing part 24 and the drawing part 24 to hold the weight 1.

【0028】この態様においては、取付具である金属板
2の延伸部24の端部の折曲げ部25,25’で分銅1
を引っ掛けて、分銅1の両側から挟み込み、金属板2の
素材の弾性力を利用して保持する構造である。さらに、
図3(b)にあるように、挿通部20に巻きつくように
交互に左右に延びる延伸部24の端部の折曲げ部25,
25’の間に分銅1を挟み込むと、分銅1の幅によっ
て、左右の両折曲げ部25,25’が分銅1の回転方向
にそれぞれ押し広げられる(矢印a)。このとき、延伸
部24は、分銅1が回転したときの外周方向に引っ張ら
れることになる。したがって、挿通部20に挿入されて
いる出力軸30も同時に締め付けられることになる(矢
印b)。つまり、折曲げ部25,25’と延伸部24と
で構成される保持部3により分銅1を狭持すると、同時
に挿通部20が出力軸30を締め付け固定することが可
能である。
In this embodiment, the weight 1 is formed at the bent portions 25 and 25 'at the ends of the extended portion 24 of the metal plate 2 which is a fixture.
Is a structure in which the weight of the metal plate 2 is held by using the elastic force of the material of the metal plate 2. further,
As shown in FIG. 3B, the bent portions 25 at the ends of the extending portions 24 that extend alternately to the left and right so as to be wound around the insertion portion 20,
When the weight 1 is sandwiched between the weights 25 ′, the left and right bent portions 25 and 25 ′ are pushed apart by the width of the weight 1 in the rotational direction of the weight 1 (arrow a). At this time, the extending portion 24 is pulled in the outer peripheral direction when the weight 1 rotates. Therefore, the output shaft 30 inserted in the insertion portion 20 is also tightened at the same time (arrow b). That is, when the weight 1 is held by the holding portion 3 configured by the bent portions 25 and 25 ′ and the extending portion 24, the insertion portion 20 can simultaneously tighten and fix the output shaft 30.

【0029】このように、本態様における取付具である
金属板2は、モータの出力軸30への固定に関して、か
しめ固定、あるいは、半田や接着剤等の手段を要するこ
となく、金属板2のみでの固定を可能としている。この
ためモータ本体への分銅の固定が非常に簡易なものとな
り、作業工程も短縮することができる。また、分銅の直
線部10,10’がテーパを有する形状であっても、前
態様と同様に、折曲げ部25,25’で調整することに
より分銅の形状に保持部3を対応することが可能であ
る。
As described above, the metal plate 2 which is the attachment in this embodiment does not require caulking or fixing such as solder or adhesive for fixing to the output shaft 30 of the motor. It is possible to fix with. Therefore, the weight can be fixed to the motor body very easily, and the working process can be shortened. Further, even if the linear portions 10 and 10 'of the weight have a taper shape, the holding portion 3 can be made to correspond to the shape of the weight by adjusting the bent portions 25 and 25' as in the previous embodiment. It is possible.

【0030】ここで、本態様においても、金属板2の分
銅1に対する保持に関しては、その保持力をより大きい
ものにするために、折曲げ部と分銅との間に接着剤を併
用しても良い。また、このような金属板のみでモータの
出力軸への固定が可能な場合においても、前態様と同様
の手段を併用することもできる。
Here, also in this embodiment, regarding the holding of the metal plate 2 with respect to the weight 1, an adhesive may be used in combination between the bent portion and the weight in order to increase the holding force. good. Further, even in the case where the motor can be fixed to the output shaft only with such a metal plate, the same means as in the previous aspect can be used together.

【0031】また、本発明に係る分銅においては、図4
に示すように、予め折曲げ部23,23’(25,2
5’)で保持される位置を、金属板2の厚み分だけ薄く
取り除いておく形状とすることもできる。このような形
状にすることにより、金属板2の保持部3で分銅1を保
持したときに、分銅の外周面より外側に折曲げ部23,
23’(25,25’)が突出することがない。つま
り、折曲げ部23,23’(25,25’)が分銅1の
曲面と同一曲面に配置するということになる。
Further, in the weight according to the present invention, as shown in FIG.
As shown in, the bent portions 23, 23 '(25, 2
The position held by 5 ') may be formed so as to be thinly removed by the thickness of the metal plate 2. With such a shape, when the weight 1 is held by the holding portion 3 of the metal plate 2, the bent portion 23, which is located outside the outer peripheral surface of the weight,
23 '(25, 25') does not project. That is, the bent portions 23, 23 '(25, 25') are arranged on the same curved surface as the curved surface of the weight 1.

【0032】これは、分銅の外周を単に折曲げ部で保持
した場合、モータに装着した分銅が回転したとき、分銅
の外周のさらに外側を折曲げ部が回転することになる。
しかし、振動モータの限られた設置空間に対しては設計
上の要望から、金属板の厚みだけ分銅の径を小さくしな
ければならない。それに対して、金属板の厚み分を取り
除いた形状の場合には、分銅が回転した時に金属板が分
銅より外周にくることがなく、分銅の径を振動モータの
設置空間に対して最大限大きく取ることができ、振動量
を増加することができるため、より有利である。
This means that when the outer circumference of the weight is simply held by the bent portion, when the weight mounted on the motor rotates, the bent portion rotates further outside the outer circumference of the weight.
However, for the limited installation space of the vibration motor, it is necessary to reduce the diameter of the weight by the thickness of the metal plate because of design requirements. On the other hand, in the case of a shape in which the thickness of the metal plate is removed, the metal plate does not come to the outer periphery of the weight when the weight rotates, and the diameter of the weight is maximized relative to the vibration motor installation space. This is more advantageous because it can be taken and the amount of vibration can be increased.

【0033】なお、本発明では、部分円筒状の分銅の形
成にプレス押圧成形を使用しているが、これに限定され
るものではなく、射出成形等による焼結等を用いること
も可能である。
In the present invention, press-press molding is used to form the partially cylindrical weight, but the present invention is not limited to this, and sintering by injection molding or the like can also be used. .

【0034】上記に説明したような本発明に係る振動モ
ータは、部分円筒形状の分銅を一枚の金属製の板状部材
による取付具により装着している。このため、振動発生
部の重量を軽減した構造であり、モータの起動に伴う消
費電力を抑えることができ、携帯用通信機器、例えば、
携帯電話機に使用される振動モータとして最適である。
In the vibration motor according to the present invention as described above, the partial cylindrical weight is mounted by the fitting made of one metal plate member. Therefore, the structure has a reduced weight of the vibration generating portion, it is possible to suppress the power consumption due to the start of the motor, portable communication device, for example,
It is optimal as a vibration motor used in mobile phones.

【発明の効果】以上に説明したように、本発明に係る振
動モータ用分銅では、板状の部分円筒形状であるタング
ステン合金等の分銅の材料となる高価な金属の使用量を
抑えることができるため、部品コストを抑えることがで
きる。また、分銅が一体形状でないため、モータ出力軸
に取り付けるための挿通孔を必要とせず、成形加工が比
較的容易である。このため、製品の歩留りを上げること
ができる。
As described above, in the weight for a vibration motor according to the present invention, it is possible to suppress the amount of expensive metal used as the material of the weight such as the tungsten alloy having a plate-like partial cylindrical shape. Therefore, the component cost can be suppressed. Further, since the weight is not in the integral shape, an insertion hole for attaching the weight to the motor output shaft is not required, and the molding process is relatively easy. Therefore, the yield of products can be increased.

【0035】また、一枚の金属製の板状部材を用いてモ
ータの出力軸に分銅を取り付けるため、比較的容易に信
頼性のある固定を行うことができる。さらに、板状部材
自体の弾力性を利用することで、分銅の保持と、分銅の
モータへの装着を同時に行うことができる。
Further, since the weight is attached to the output shaft of the motor by using a single plate member made of metal, the fixing can be performed relatively easily and reliably. Further, by utilizing the elasticity of the plate member itself, it is possible to hold the weight and mount the weight on the motor at the same time.

【0036】また、本発明に係る振動モータ用分銅を備
えた振動モータは、振動力を維持しつつ軽量化を可能と
する。さらに、本発明の振動モータを用いた携帯用通信
機器は、モータの使用する消費電力を減少させることが
できる。
Further, the vibration motor provided with the weight for vibration motor according to the present invention enables weight reduction while maintaining vibration force. Furthermore, the portable communication device using the vibration motor of the present invention can reduce the power consumption used by the motor.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係る振動モータ用分銅の斜視図であ
る。
FIG. 1 is a perspective view of a weight for a vibration motor according to the present invention.

【図2】本発明に係る振動モータの部分斜視図である。FIG. 2 is a partial perspective view of a vibration motor according to the present invention.

【図3】本発明に係る振動モータの別の実施例を示し、
(a)は、部分斜視図であり、(b)は、(a)のA方
向からの矢視図であり、(c)は、(b)のB方向から
の矢視図である。
FIG. 3 shows another embodiment of the vibration motor according to the present invention,
(A) is a partial perspective view, (b) is an arrow view from the A direction of (a), (c) is an arrow view from the B direction of (b).

【図4】本発明に係る振動発生用分銅の別の実施例を示
す図であり、(a)は正面図であり、(b)は側面図で
ある。
4A and 4B are views showing another embodiment of the vibration generating weight according to the present invention, in which FIG. 4A is a front view and FIG. 4B is a side view.

【図5】本発明に係る振動モータ用分銅の他の実施の形
態を示す斜視図である。
FIG. 5 is a perspective view showing another embodiment of the vibration motor weight according to the present invention.

【図6】従来の振動モータを示す全体図である。FIG. 6 is an overall view showing a conventional vibration motor.

【符号の説明】[Explanation of symbols]

1・・・(部分円筒形状)分銅 2・・・金属板 3・・・保持部 5・・・モータ本体 10,10’・・・直線部 20・・・挿通部 21・・・支持部 22・・・突片 24・・・延伸部 23,23’、25,25’・・・保持部 30・・・出力軸 1 ... (Partial cylindrical shape) Weight 2 ... Metal plate 3 ... holding part 5: Motor body 10, 10 '... Straight section 20 ... Insertion part 21 ... Supporting part 22 ... Protrusion 24 ... Stretching part 23, 23 ', 25, 25' ... Holding unit 30 ... Output shaft

───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 5D107 AA13 BB08 CC09 DD09 5H607 BB01 CC01 CC03 DD19 EE57 JJ03 JJ07 5K027 AA11 FF03 FF21    ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 5D107 AA13 BB08 CC09 DD09                 5H607 BB01 CC01 CC03 DD19 EE57                       JJ03 JJ07                 5K027 AA11 FF03 FF21

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 モータの出力軸に固定される振動発生用
の分銅であって、 板状部材からなり、かつ、前記板状部材の形状が一つの
弧を形成するように曲面を有することを特徴とする振動
モータ用分銅。
1. A weight for vibration generation fixed to an output shaft of a motor, comprising a plate-shaped member, wherein the plate-shaped member has a curved surface so as to form one arc. Characteristic vibration motor weight.
【請求項2】 振動モータ用分銅を、前記振動モータ用
分銅の回転方向両側から挟み込んでモータの出力軸に対
して常に偏心させて保持する保持部と、 振動モータの出力軸を挿通し、固定するための挿通部
と、を有する一枚の金属製の板状部材により構成される
取付具を用いて、請求項1記載の振動モータ用分銅の前
記曲面をモータの出力軸の回転円周方向と一致する方向
に装着することを特徴とする振動モータ。
2. A holding portion for sandwiching the vibration motor weight from both sides in the rotation direction of the vibration motor weight and holding the weight for vibration motor always eccentric to the output shaft of the motor, and inserting and fixing the output shaft of the vibration motor. A mounting member configured by a single plate member made of metal having an insertion portion for inserting the curved surface of the weight for vibration motor according to claim 1 in a rotation circumferential direction of an output shaft of the motor. A vibration motor that is mounted in the same direction as.
【請求項3】 前記取付具の前記保持部が、前記挿通部
を中心として、前記挿通部から前記振動モータ用分銅の
回転方向に交互に伸びて形成される延伸部を有するとと
もに、前記振動モータ用分銅の回転方向両側から挟み込
んで保持することにより、前記延伸部が前記回転方向に
押し広げながら引っ張られて前記挿通部がモータの出力
軸を締め付け固定することを特徴とする、請求項2記載
の振動モータ。
3. The vibrating motor, wherein the holding portion of the fixture has extending portions formed by alternately extending from the inserting portion in the rotation direction of the vibration motor weight with the inserting portion as a center. 3. The holding portion is sandwiched and held from both sides in the rotation direction of the working weight, whereby the extending portion is pulled while being expanded in the rotation direction, and the insertion portion clamps and fixes the output shaft of the motor. Vibration motor.
【請求項4】 請求項2または請求項3の振動モータを
取り付けた携帯用通信機器。
4. A portable communication device to which the vibration motor according to claim 2 or 3 is attached.
JP2002048654A 2002-02-25 2002-02-25 Weight for vibration motor and vibration motor Expired - Fee Related JP3958981B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002048654A JP3958981B2 (en) 2002-02-25 2002-02-25 Weight for vibration motor and vibration motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002048654A JP3958981B2 (en) 2002-02-25 2002-02-25 Weight for vibration motor and vibration motor

Publications (2)

Publication Number Publication Date
JP2003245608A true JP2003245608A (en) 2003-09-02
JP3958981B2 JP3958981B2 (en) 2007-08-15

Family

ID=28661388

Family Applications (1)

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Country Link
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006022010A1 (en) * 2004-08-26 2006-03-02 Nanshin Co., Ltd. Eccentric weight, method of producing the same, vibration motor, and portable apparatus
WO2006041045A1 (en) * 2004-10-08 2006-04-20 Nanshin Co., Ltd. Eccentric weight, vibration motor, portable apparatus, and method of producing eccentric weight
WO2006049144A1 (en) * 2004-11-04 2006-05-11 Nanshin Co., Ltd. Eccentric weight, vibration motor, portable apparatus and method for producing eccentric weight
WO2006109365A1 (en) * 2005-04-05 2006-10-19 Nanshin Co., Ltd. Eccentric weight, vibrating motor, mobile device, and method of manufacturing eccentric weight
KR100665402B1 (en) 2005-08-18 2007-01-04 주식회사 모아텍 Centrifugal oscillating motor
KR100774892B1 (en) * 2006-01-17 2007-11-08 엘지이노텍 주식회사 Bar type vibration motor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006022010A1 (en) * 2004-08-26 2006-03-02 Nanshin Co., Ltd. Eccentric weight, method of producing the same, vibration motor, and portable apparatus
WO2006022354A1 (en) * 2004-08-26 2006-03-02 Nanshin Co., Ltd. Eccentric weight and method of producing the weight, vibrating motor and method of producing the motor, and portable apparatus
WO2006041045A1 (en) * 2004-10-08 2006-04-20 Nanshin Co., Ltd. Eccentric weight, vibration motor, portable apparatus, and method of producing eccentric weight
WO2006049144A1 (en) * 2004-11-04 2006-05-11 Nanshin Co., Ltd. Eccentric weight, vibration motor, portable apparatus and method for producing eccentric weight
WO2006109365A1 (en) * 2005-04-05 2006-10-19 Nanshin Co., Ltd. Eccentric weight, vibrating motor, mobile device, and method of manufacturing eccentric weight
WO2006109350A1 (en) * 2005-04-05 2006-10-19 Nanshin Co., Ltd. Eccentric weight, vibration motor, and portable apparatus
KR100665402B1 (en) 2005-08-18 2007-01-04 주식회사 모아텍 Centrifugal oscillating motor
KR100774892B1 (en) * 2006-01-17 2007-11-08 엘지이노텍 주식회사 Bar type vibration motor

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