JP3528787B2 - Vibration generator for small radio - Google Patents
Vibration generator for small radioInfo
- Publication number
- JP3528787B2 JP3528787B2 JP2000354035A JP2000354035A JP3528787B2 JP 3528787 B2 JP3528787 B2 JP 3528787B2 JP 2000354035 A JP2000354035 A JP 2000354035A JP 2000354035 A JP2000354035 A JP 2000354035A JP 3528787 B2 JP3528787 B2 JP 3528787B2
- Authority
- JP
- Japan
- Prior art keywords
- vibrator
- groove portion
- vibration generator
- rotary shaft
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば、携帯電話
のような小型無線機の呼び出しなどに用いられる振動発
生装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration generator used for calling a small radio such as a mobile phone.
【０００２】[0002]
【従来の技術】近年、ページング方式の小型無線呼び出
し機やＰＨＳあるいは携帯式電話機等の小型無線機の一
種として、モータの回転軸に高比重金属製の振動子を偏
心させて結合してなる振動発生装置を内蔵した形式のも
のが普及しつつある。このような振動発生装置を内蔵し
た小型無線呼び出し機等によれば、呼び出し音を発する
代わりに、振動子の回転によって振動を発生させるた
め、例えば、人込みの中や会議中などにおいても他人に
知られることなく受信を確認することができる。2. Description of the Related Art In recent years, as a kind of small radios such as paging type small radio callers, PHSs, and portable telephones, vibration formed by eccentrically coupling a vibrator made of high specific gravity metal to a rotating shaft of a motor. A type with a built-in generator is becoming popular. According to a small wireless caller or the like having such a vibration generator built therein, the vibration is generated by the rotation of the vibrator instead of emitting the ringing sound, so that, for example, even in a crowded person or during a meeting The reception can be confirmed without being known.
【０００３】従来、この種の小型無線機の振動発生装置
は、小型無線機の信号発生回路に接続された小型モータ
の回転軸に、非円筒状に形成された振動子を一体的に結
合させた構成となっている。ここで、この振動子は、粉
末冶金法によって成形された高比重金属製のものであ
り、横断面略扇状の偏心荷重部に円筒状のボス部が一体
形成され、そのボス部に形成された取付孔に回転軸を差
し込み、当該ボス部を加締めて塑性変形させることによ
り、ボス部と回転軸とを密させて回転軸に一体的に結合
されている。Conventionally, this type of vibration generator for a small radio device has a non-cylindrical vibrator integrally connected to a rotary shaft of a small motor connected to a signal generation circuit of the small radio device. It has been configured. Here, this vibrator is made of high specific gravity metal formed by a powder metallurgy method, and a cylindrical boss portion is integrally formed on an eccentric load portion having a cross section of a substantially fan shape, and is formed on the boss portion. By inserting the rotary shaft into the mounting hole and caulking the boss portion to plastically deform the boss portion and the rotary shaft, the boss portion and the rotary shaft are tightly connected to the rotary shaft.
【０００４】このような上記従来の振動発生装置によれ
ば、振動子自体を加締めて回転軸に直接的に結合させて
いるため、それまでの接着剤や他の結合部品を介して振
動子を回転軸に固定したものと比較して、部品点数の削
減が可能になるという利点がある。According to the above conventional vibration generator, since the vibrator itself is caulked and directly connected to the rotary shaft, the vibrator is connected via the existing adhesive and other connecting parts. It has an advantage that the number of parts can be reduced as compared with the case where is fixed to the rotating shaft.
【０００５】[0005]
【発明が解決しようとする課題】ところが、上記従来の
振動発生装置にあっては、振動子の円筒状をなすボス部
の内部に、取付孔を形成しなければならないため、粉末
原料をプレスして振動子を成形する際に、特に外周が薄
肉となるボス部の成形型部分に粉末原料を充填すること
が難しく、振動子の歩留まりの低下をもたらすという問
題があった。また、近年における小型化の要請から、振
動子自体を小径に形成しようとすると、取付孔の周囲の
ボス部が極薄肉になるために、大きな力で加締めるとク
ラックを発生しやすく、逆に加締め力が小さいと所望の
引抜き強度が得られないために、当該加締め力の調整が
困難になるという問題点もあった。However, in the above-mentioned conventional vibration generator, since the mounting hole must be formed inside the cylindrical boss portion of the vibrator, the powder raw material is pressed. When a vibrator is formed by molding, it is difficult to fill the molding material of the boss portion having a thin outer periphery with the powder raw material, resulting in a decrease in the yield of the vibrator. Also, due to the recent demand for miniaturization, when trying to form the vibrator itself to have a small diameter, the boss portion around the mounting hole becomes extremely thin, so cracking easily occurs when caulking with a large force, and conversely If the caulking force is small, the desired pull-out strength cannot be obtained, and there is also a problem that it is difficult to adjust the caulking force.
【０００６】そこで、従来の他の振動発生装置として、
図９および図１０に示すように、振動子１の偏心荷重部
２の中央部に、回転軸３が嵌まり込む溝部４を形成し、
さらに溝部４に沿って偏心荷重部２から膨出することに
より溝部４の両側縁部となる壁部５を一体に形成すると
ともに、これら壁部５の先端部における軸線方向の中央
部分を、先端がＲ形状や直方体状に形成された加締めパ
ンチ７によって、溝部４の開口側から底側に向けて加締
めることにより回転軸３に一体的に結合するものが提案
されている。Therefore, as another conventional vibration generator,
As shown in FIGS. 9 and 10, a groove portion 4 into which the rotary shaft 3 is fitted is formed in the central portion of the eccentric load portion 2 of the vibrator 1,
Further, by bulging along the groove portion 4 from the eccentric load portion 2, the wall portions 5 that are both side edge portions of the groove portion 4 are integrally formed, and the central portion in the axial direction at the tip end portions of these wall portions 5 is It has been proposed that the caulking punch 7 having an R shape or a rectangular parallelepiped shape is integrally coupled to the rotary shaft 3 by caulking from the opening side of the groove portion 4 toward the bottom side.
【０００７】上記従来の振動発生装置によれば、取付孔
が形成されたボス部を有する振動子よりも成形が容易で
あり、よって製造歩留まりを向上させることができると
ともに、振動子１自体が小径になった場合においても、
上記ボス部の外周部のような薄肉部分を加締める場合と
比較して、クラックを生じるおそれが少ないという利点
がある。According to the above-described conventional vibration generator, molding is easier than that of a vibrator having a boss portion in which a mounting hole is formed. Therefore, the manufacturing yield can be improved and the vibrator 1 itself has a small diameter. Even when
Compared with the case of caulking a thin portion such as the outer peripheral portion of the boss portion, there is an advantage that there is less risk of cracking.
【０００８】しかしながら、図９および図１０に示した
従来の振動発生装置においては、壁部５の先端部端面を
加締める際に、その溝部４側から外周６側に至る全幅寸
法を押し潰しているので、大きな加締め力が必要になる
にも拘わらず、壁部５の溝４側の部分は回転軸３によっ
て剛性が高くなっているために、塑性変形する際に、も
っぱら自由端となる外周６側に膨出してしまい、この結
果高い引抜き強度が得られないという問題点があった。
また、大きな加締め力を要する結果、振動子１を小径に
した場合においても所望の振動を得るべく、よりタング
ステンの含有を増加させようとすると、材質的に一層脆
くなるために、加締める壁部５にクラックを生じやすく
なるという問題点もあった。However, in the conventional vibration generator shown in FIGS. 9 and 10, when crimping the end face of the wall portion 5, the entire width dimension from the groove portion 4 side to the outer periphery 6 side is crushed. Therefore, although a large caulking force is required, since the portion of the wall portion 5 on the groove 4 side has a high rigidity due to the rotating shaft 3, it becomes a free end exclusively during plastic deformation. There is a problem that the outer periphery 6 swells, and as a result, high drawing strength cannot be obtained.
Further, as a result of requiring a large caulking force, if the content of tungsten is further increased in order to obtain a desired vibration even when the vibrator 1 has a small diameter, the material to be crimped becomes more fragile. There is also a problem that the portion 5 is likely to be cracked.
【０００９】さらに、壁部５の先端部における軸線方向
の中央部分を、加締めパンチ７によって加締めているの
で、振動子１の小型化に伴って、その軸線方向の端面間
の長さ寸法が小さくなると、充分な引抜き強度が得られ
なくなるとともに、軸線方向の長さ寸法が異なる振動子
１に対して、加締め長さ寸法が異なる別個の加締めパン
チ７を準備する必要があるために、経済性に劣るという
問題点もあった。Further, since the central portion in the axial direction at the tip end portion of the wall portion 5 is crimped by the crimping punch 7, the size of the length between the end faces in the axial direction in accordance with the miniaturization of the vibrator 1. Becomes smaller, sufficient pull-out strength cannot be obtained, and separate crimping punches 7 having different crimping length dimensions need to be prepared for the vibrator 1 having different axial length dimensions. There was also the problem of poor economic efficiency.
【００１０】本発明は、上記事情に鑑みてなされたもの
で、振動子の製造が容易で、かつ小さな加締め力によっ
ても高い引抜き強度で振動子をモータの回転軸に結合さ
せることができ、よって装置全体の一層の小型化を図る
ことが可能となる小型無線機の振動発生装置を提供する
ことにある。The present invention has been made in view of the above circumstances, and the vibrator can be easily manufactured, and the vibrator can be coupled to the rotary shaft of the motor with a high pulling strength even with a small crimping force. Therefore, it is an object of the present invention to provide a vibration generator for a small wireless device that can further reduce the size of the entire device.
【００１１】[0011]
【課題を解決するための手段】請求項１に記載の小型無
線機の振動発生装置は、モータの回転軸に振動子を一体
的に結合してなる小型無線機の振動発生装置において、
上記振動子は、偏心荷重部に回転軸が嵌まり込む溝部が
形成され、この溝部の両側壁を形成する壁部が対向して
形成されるとともに、これら壁部の先端部端面のうち外
周側部分を残した溝部側の部分であって、かつ回転軸の
軸線方向の少なくとも一方の端部に至るまでの部分が、
上記溝部の開口側から底側に向けて加締められることに
より、回転軸に一体的に結合されていることを特徴とす
るものである。According to a first aspect of the present invention, there is provided a vibration generator for a small wireless device, wherein a vibrator is integrally coupled to a rotary shaft of a motor.
In the above vibrator, the eccentric load portion is formed with a groove portion into which the rotary shaft is fitted, the wall portions forming both side walls of the groove portion are formed to face each other, and the outer peripheral side of the tip end faces of these wall portions is formed. A portion on the groove portion side that leaves the portion, and a portion up to at least one end portion in the axial direction of the rotating shaft,
It is characterized in that it is integrally connected to the rotary shaft by being caulked from the opening side of the groove portion toward the bottom side.
【００１２】ここで、請求項２に記載の発明は、請求項
１に記載の発明において、上記壁部の先端部端面は、回
転軸の軸線方向に、モータ側の端面との間を残して、他
端面に至るまでの部分が加締められることにより、回転
軸に一体的に結合されていることを特徴とするものであ
る。The invention according to claim 2 is the invention according to claim 1, wherein the end face of the front end portion of the wall portion is left in the axial direction of the rotary shaft with the end face on the motor side. It is characterized in that it is integrally coupled to the rotary shaft by crimping the portion up to the other end surface.
【００１３】また、請求項３に記載の発明は、請求項１
または２に記載の発明において、上記先端部端面の溝部
側から外周側までの幅寸法Ｗのうち、溝部側の縁部から
０．２５Ｗ〜０．９Ｗの範囲が加締められていることを
特徴とするものである。The invention described in claim 3 is the same as claim 1
In the invention described in (2), in the width dimension W from the groove side to the outer peripheral side of the tip end face, the range of 0.25 W to 0.9 W from the edge on the groove side is caulked. It is what
【００１４】さらに、請求項４に記載の発明は、請求項
１〜３に記載の発明において、上記振動子の溝部は、回
転軸の中心角１８０°以上の範囲を内在させる大きさに
形成されているとともに、上記溝部の開口幅Ｗ1 は、上
記モータの回転軸の直径Ｄとの比（Ｗ1 ／Ｄ）が０．５
０〜０．９５の範囲になるように設定されていることを
特徴とするものである。Further, in the invention described in claim 4, in the invention described in any one of claims 1 to 3, the groove portion of the vibrator is formed to have a size in which a range of a central angle of 180 ° or more of the rotating shaft is included. In addition, the opening width W 1 of the groove has a ratio (W 1 / D) to the diameter D of the rotating shaft of the motor of 0.5.
It is characterized in that it is set to be in the range of 0 to 0.95.
【００１５】請求項１〜４のいずれかに記載の小型無線
機の振動発生装置においては、溝部内にモータの回転軸
を嵌め込み、この溝部の両側縁部を形成する壁部の先端
部端面のうち、外周側部分を残した溝部側の部分を溝部
の底側に向けて加締めているので、図９および図１０に
示した従来の振動発生装置に比べて、より小さな加締め
力によって振動子を回転軸に結合させることが可能とな
る。この際に、加締められない壁部の外周部分が、加締
め部分における塑性変形に対して壁部として作用し、こ
の結果上記加締め部分の大部分が溝部側へと膨出する。
そして、上記回転軸を溝部の底部と、膨出した両壁部と
の３点によって強固に振動子を回転軸に固定することに
なる。このため、本発明に係る振動発生装置によれば、
振動子の製造が容易であることに加えて、さらに小さな
加締め力によっても高い引抜き強度で振動子をモータの
回転軸に結合させることができる。In the vibration generator for a small radio device according to any one of claims 1 to 4, the rotary shaft of the motor is fitted in the groove portion, and the end face of the tip portion of the wall portion forming both side edges of the groove portion is formed. Of these, since the portion on the groove portion side, which remains the outer peripheral side portion, is caulked toward the bottom side of the groove portion, it is vibrated by a smaller caulking force as compared with the conventional vibration generator shown in FIGS. 9 and 10. It is possible to connect the child to the rotation axis. At this time, the outer peripheral portion of the non-crimped wall portion acts as a wall portion against the plastic deformation in the crimped portion, and as a result, most of the crimped portion bulges toward the groove portion side.
Then, the vibrator is firmly fixed to the rotary shaft by the three points of the bottom of the groove and the bulging both walls. Therefore, according to the vibration generator of the present invention,
In addition to facilitating the manufacture of the vibrator, the vibrator can be coupled to the rotary shaft of the motor with a high pulling strength even with a smaller crimping force.
【００１６】加えて、壁部の先端部端面のうち外周側部
分を残した溝部側の部分であって、かつ回転軸の軸線方
向の少なくとも一方の端部に至るまでの部分を加締める
ことにより、振動子を回転軸に結合させているので、振
動子の小型化に伴って、その軸線方向の端面間の長さ寸
法が小さくなった場合においても、充分な引抜き強度を
得ることができる。しかも、加締めパンチとして、振動
子の軸線方向の長さ寸法よりも大きなものを準備してお
けば、一の加締めパンチを用いて、上記長さ寸法の異な
る複数種類の振動子の加締め作業を行うことができる。In addition, by crimping a portion of the end surface of the tip portion of the wall portion on the groove portion side, where the outer peripheral portion is left, up to at least one end portion in the axial direction of the rotary shaft. Since the oscillator is coupled to the rotary shaft, sufficient pulling strength can be obtained even when the length dimension between the end faces in the axial direction of the oscillator becomes smaller as the oscillator becomes smaller. Moreover, if a crimping punch with a size larger than the axial length of the vibrator is prepared, one crimping punch can be used to crimp multiple types of vibrators with different lengths. You can do the work.
【００１７】このように、請求項１〜４のいずれかに記
載の本発明に係る振動発生装置によれば、従来よりも小
さな加締め力によって、強固に振動子をモータの回転軸
に固定することができるため、振動子の小型軽量化、ひ
いては振動発生装置および小型無線機全体の小型軽量化
を実現することができる。また、加締め荷重を小さく
し、かつ振動子のクラックの発生を防ぐことができる結
果、振動発生装置の生産性を向上させるとともに、振動
子の高比重化による振動効率の向上が可能となる。さら
に、一の加締めパンチによって複数種類の振動子の加締
めを行うことができるために経済性にも優れる。As described above, according to the vibration generator of the present invention as set forth in any one of claims 1 to 4, the vibrator is firmly fixed to the rotating shaft of the motor with a caulking force smaller than the conventional one. Therefore, it is possible to reduce the size and weight of the vibrator, and thus reduce the size and weight of the vibration generator and the small radio as a whole. In addition, as a result of being able to reduce the caulking load and prevent the generation of cracks in the vibrator, it is possible to improve the productivity of the vibration generator and improve the vibration efficiency by increasing the specific gravity of the vibrator. Furthermore, since one type of crimping punch can crimp a plurality of types of vibrators, it is excellent in economy.
【００１８】ここで、壁部の先端部端面を加締めるに際
しては、特に振動子の軸線方向の長さ寸法が小さい場合
には、上記壁部の軸線方向の両端面間にわたるように加
締めてもよいが、このような小型の振動発生装置におい
ては、一般に振動子とモータとの間隔が僅かであるため
に、請求項２に記載の発明のように、モータ側の端面と
の間を残して、他端面に至るまでの部分を加締めれば、
加締められた壁部が膨出することによってモータと干渉
することを未然に防ぐことができる。Here, when caulking the end face of the wall portion, especially when the length of the vibrator in the axial direction is small, the caulking is performed so as to extend between both end faces in the axial direction of the wall portion. However, in such a small-sized vibration generator, since the distance between the vibrator and the motor is generally small, the space between the vibrator and the end surface on the motor side is left as in the invention of claim 2. If you crimp the part up to the other end surface,
The swollen wall portion can be prevented from interfering with the motor in advance.
【００１９】また、請求項１または２に記載の発明にお
いて、壁部の先端部端面のうち、外周側部分を残した溝
部側の部分を溝部の底側に向けて加締めるに際しては、
請求項３に記載の発明のように、上記先端部端面の溝部
側から外周側までの幅寸法Ｗのうち、溝部側の縁部から
０．２５Ｗ〜０．９Ｗの範囲を加締めるのが好ましい。
この際に、加締める幅寸法が小さい場合には、軸線方向
の加締め長さ寸法を大きくとればよく、逆に加締める幅
寸法が大きい場合には、上記軸線方向の加締め長さ寸法
が小さくも十分な引抜き強度が得られる。加締める範囲
を０．２５Ｗ〜０．９Ｗの範囲に限定したのは、当該範
囲が０．２５Ｗより小さいと、モータの回転軸に振動子
を強固に固定するための十分な塑性変形量が得難くな
り、逆に上記範囲が０．９Ｗを超えると、加締め部の塑
性変形に対して上述した壁部としての作用が減少し、こ
の結果外周部分も外方に変形を強いられて引抜き強度の
低下を招くからである。Further, in the invention described in claim 1 or 2, when the portion of the end surface of the tip portion of the wall portion on the groove portion side except the outer peripheral side portion is caulked toward the bottom side of the groove portion,
As in the invention described in claim 3, it is preferable to crimp the range of 0.25 W to 0.9 W from the edge portion on the groove portion side in the width W from the groove portion side to the outer peripheral side of the tip end surface. .
At this time, if the crimp width is small, the crimp length in the axial direction should be large. Conversely, if the crimp width is large, the crimp length in the axial direction should be large. Even if it is small, sufficient drawing strength can be obtained. The reason for limiting the crimping range to the range of 0.25W to 0.9W is that if the range is smaller than 0.25W, a sufficient plastic deformation amount for firmly fixing the vibrator to the rotation shaft of the motor can be obtained. If the above range exceeds 0.9 W, on the contrary, the action of the above-mentioned wall portion against the plastic deformation of the crimped portion decreases, and as a result, the outer peripheral portion is also forced to deform outward and the pull-out strength. This leads to a decrease in
【００２０】また、壁部の形状としては、当該壁部を溝
部の両側縁から直立させることにより、溝部が全体とし
てＵ字状をなすように形成してもよい。この場合には、
回転軸を溝部に嵌め込んだ状態において、回転軸は、中
心角１８０°の範囲において溝部に内在されることにな
る。これに対して、請求項４に記載の発明のように、振
動子の溝部を、上記回転軸の中心角１８０°以上の範囲
を内在させる大きさに形成し、かつ上記溝部の開口幅Ｗ
1 を、上記回転軸の直径Ｄとの比（Ｗ1 ／Ｄ）が０．５
０〜０．９５の範囲になるように設定すれば、加締めた
後において、壁部の塑性変形により、一層効果的に溝部
の開口部を塞いで振動子を強固に固定することができる
ため好適である。As for the shape of the wall portion, the wall portion may be formed upright from both side edges of the groove portion so that the groove portion has a U-shape as a whole. In this case,
When the rotating shaft is fitted in the groove, the rotating shaft is included in the groove in the range of the central angle of 180 °. On the other hand, as in the invention described in claim 4, the groove portion of the vibrator is formed to have a size such that the range of the central angle of the rotating shaft of 180 ° or more is included, and the opening width W of the groove portion is W.
1, the ratio between the diameter D of the rotary shaft (W 1 / D) is 0.5
If the range is set to 0 to 0.95, after the caulking, the plastic deformation of the wall portion can more effectively close the opening portion of the groove portion and firmly fix the oscillator. It is suitable.
【００２１】[0021]
【発明の実施の形態】（第１の実施形態）図１〜図３
は、本発明の第１の実施形態を示すもので、図中符号１
０が振動子である。この振動子１０は、粉末冶金法によ
って成形された高比重金属製のものであり、軸線Ｏを中
心とする横断面半円形状とされ、その軸線Ｏから偏心す
る半円形状部分全体が偏心荷重部１１となっている。こ
の振動子１０は、偏心荷重部１１の外周円弧の中心部
に、溝部１３が形成されるとともに、この溝部１３の両
側には、偏心荷重部１１から平行に膨出して溝部１３の
両側壁となる壁部１４が一体に形成されている。ここ
で、溝部１３は、モータの回転軸１２が嵌まり込む底部
が当該回転軸１２の直径とほぼ等しい半円形状に形成さ
れ、かつ開口部の近傍が溝部１３内に嵌め込まれたモー
タの回転軸１２の露出部分を軸線Ｏ方向の両側から間隔
をおいて覆うように一体に形成されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIGS. 1 to 3
1 shows the first embodiment of the present invention, in which reference numeral 1
0 is a vibrator. The vibrator 10 is made of high specific gravity metal formed by powder metallurgy, has a semicircular cross section centered on the axis O, and the entire semicircular portion eccentric from the axis O has an eccentric load. It is part 11. In this vibrator 10, a groove 13 is formed at the center of the outer circumferential arc of the eccentric load portion 11, and on both sides of this groove portion 13, bulging parallel to the eccentric load portion 11 and both side walls of the groove portion 13 are formed. The wall portion 14 is integrally formed. Here, the groove 13 has a bottom portion into which the rotary shaft 12 of the motor fits is formed in a semicircular shape substantially equal to the diameter of the rotary shaft 12, and the vicinity of the opening is fitted into the groove 13 to rotate the motor. The shaft 12 is integrally formed so as to cover the exposed portion of the shaft 12 from both sides in the direction of the axis O at intervals.
【００２２】この結果、振動子１０の溝部１３は、回転
軸１２の中心角１８０°以上の範囲を内在させる大きさ
に形成されている。そして、対向する壁部１４間におけ
る溝部１３の開口幅（加締め前において図４にＷ1 で示
す部分の寸法）は、回転軸１２の直径Ｄとの比（Ｗ1 ／
Ｄ）が０．５０〜０．９５の範囲になるように設定され
ている。このような範囲となる具体例を示せば、回転軸
１２の直径Ｄ（ｍｍ）が、それぞれ０．４、０．５、
０．６、０．７、０．８、０．９、１．０である場合に
は、壁部１４間における溝部１３の開口幅Ｗ1 （ｍｍ）
を、０．３、０．４、０．５、０．６、０．７、０．
８、０．９に設定すればよい。As a result, the groove portion 13 of the vibrator 10 is formed to have a size such that the range of the central angle of the rotating shaft 12 of 180 ° or more is included therein. The opening width of the groove portion 13 between the opposing wall portions 14 (the dimension of the portion indicated by W 1 in FIG. 4 before caulking) is the ratio of the diameter D of the rotating shaft 12 (W 1 /
D) is set in the range of 0.50 to 0.95. To give a specific example in such a range, the diameter D (mm) of the rotating shaft 12 is 0.4, 0.5, and
In the case of 0.6, 0.7, 0.8, 0.9, 1.0, the opening width W 1 (mm) of the groove portion 13 between the wall portions 14
, 0.3, 0.4, 0.5, 0.6, 0.7, 0.
It may be set to 8, 0.9.
【００２３】そして、上記振動子１０は、壁部１４の先
端部端面のうち、外周側部分１４ａを残した溝部１３側
の部分１４ｂが、軸線方向の両端面１４ｄ、１４ｅ間の
全長にわたって、直方体状の加締めパンチ１５により溝
部１３の開口側から底側に向けて加締められることによ
り、回転軸１２に一体的に結合されている。ここで、加
締めパンチ１５は、上記軸線方向に向けた長辺寸法が、
上記端面１４ｄ、１４ｅ間の長さ寸法よりも大きく形成
されている。また、加締められる溝部１３側の部分１４
ｂは、先端部端面の溝部１３側から外周側までの幅寸法
（加締め前において図４にＷで示す部分の寸法）のう
ち、溝部１３側の縁部から０．２５Ｗ〜０．９Ｗの範囲
となるように設定されている。In the vibrator 10, a portion 14b of the end portion of the wall portion 14 on the groove portion 13 side, where the outer peripheral portion 14a is left, is formed into a rectangular parallelepiped over the entire length between the axial end surfaces 14d and 14e. The caulking punch 15 is caulked from the opening side of the groove 13 toward the bottom side, and is integrally coupled to the rotating shaft 12. Here, the caulking punch 15 has a long side dimension in the axial direction,
It is formed larger than the length between the end faces 14d and 14e. Further, the portion 14 on the groove portion 13 side to be caulked
b is 0.25 W to 0.9 W from the edge portion on the groove portion 13 side in the width dimension (dimension of the portion indicated by W in FIG. 4 before caulking) from the groove portion 13 side of the tip end surface to the outer peripheral side. It is set to fall within the range.
【００２４】ちなみに、回転軸１２としては、例えば、
ＳＵＳ４２０などのステンレス製のものを用いることが
できる。また、振動子１０は、例えば、Ｗ−Ｎｉ系、Ｗ
−Ｎｉ−Ｆｅ系、Ｗ−Ｎｉ−Ｃｕ系、あるいはＷ−Ｍｏ
−Ｎｉ−Ｆｅ系等の、比重が１７〜１９ｇ／ｃｍ3 程度
の超重合金材料を用いて、粉末冶金法により成形された
ものである。具体例としては、Ｗ粉末；８９〜９８重量
％およびＮｉ粉末；１．０〜１１重量％からなる組成の
混合粉末、あるいは上記重量％の範囲のＷ粉末およびＮ
ｉ粉末に、Ｃｕ；０．１〜６重量％、Ｆｅ粉末；０．１
〜６重量％、Ｍｏ粉末；０．１〜６重量％、およびＣｏ
粉末；０．１〜５重量％の１種または２種以上を含有す
る組成の混合粉末を、１ｔｏｎ／ｃｍ2 〜２０ｔｏｎ／
ｃｍ2 で扇板状に圧粉成形し、この圧粉体を０℃〜−６
℃の露点の水素気流中またはアンモニア分解ガス中で液
相焼結した後、さらに、真空、中性もしくは還元性のい
ずれかの雰囲気中において７００℃〜１４３０℃±３０
℃の温度範囲で加熱した後に、少なくとも３００℃まで
４０℃／ｍｉｎ以上の冷却速度で急冷する熱処理を施し
たものである。Incidentally, as the rotary shaft 12, for example,
Stainless steel such as SUS420 can be used. Further, the vibrator 10 is, for example, a W-Ni system, a W
-Ni-Fe system, W-Ni-Cu system, or W-Mo
It is formed by powder metallurgy using a super-polymerized gold material having a specific gravity of about 17 to 19 g / cm 3 such as —Ni—Fe system. As a specific example, a mixed powder having a composition of W powder; 89 to 98% by weight and Ni powder; 1.0 to 11% by weight, or W powder and N in the above range of% by weight.
i powder, Cu; 0.1 to 6% by weight, Fe powder; 0.1
~ 6 wt%, Mo powder; 0.1-6 wt%, and Co
Powder; a mixed powder having a composition containing 0.1 to 5% by weight of one kind or two kinds or more, 1 ton / cm 2 to 20 ton /
cm 2 is pressed into a fan plate, and this pressed powder is 0 ° C to -6
After liquid phase sintering in a hydrogen stream having a dew point of ℃ or in an ammonia decomposition gas, 700 ° C. to 1430 ° C. ± 30 in a vacuum, neutral or reducing atmosphere.
After being heated in the temperature range of 0 ° C., it is subjected to a heat treatment of rapidly cooling to at least 300 ° C. at a cooling rate of 40 ° C./min or more.
【００２５】このような振動子１０の組成において、Ｗ
（タングステン）の含有量が９８重量％を越えると展性
が低下するものの高比重となり、また８９重量％に満た
ない場合には所定の比重が得られなくなり、この種の振
動子としては不都合となる。また、Ｎｉ（ニッケル）の
含有量が１１重量％を越えた場合にも所定の比重が得ら
れなくなり、それが１．０重量％に満たない場合には焼
結性が進まなくなってしまう。さらに、Ｃｏ（コバル
ト）は、Ｎｉと同様の効果があるものの、それが０．１
重量％未満では充分な添加の効果が得られず、一方、そ
れが５重量％を越えても相応の効果が得られずに製造上
不経済となる。また、Ｃｕ粉末およびＦｅ粉末は、これ
らを含有させることにより焼結温度を下げることができ
るものの、上記の上限値以上では所定の比重が得られな
くなる。In such a composition of the vibrator 10, W
If the content of (tungsten) exceeds 98% by weight, the malleability decreases, but the specific gravity becomes high, and if it is less than 89% by weight, the specific gravity cannot be obtained, which is inconvenient for this type of vibrator. Become. Further, even when the content of Ni (nickel) exceeds 11% by weight, a predetermined specific gravity cannot be obtained, and when it is less than 1.0% by weight, the sinterability does not proceed. Further, Co (cobalt) has the same effect as Ni, but it is 0.1
If it is less than 5% by weight, the effect of sufficient addition cannot be obtained. On the other hand, if it exceeds 5% by weight, the corresponding effect cannot be obtained, which is uneconomical in production. Further, Cu powder and Fe powder can reduce the sintering temperature by containing them, but if the Cu powder and the Fe powder are more than the above upper limit values, a predetermined specific gravity cannot be obtained.
【００２６】以上の構成からなる小型無線機の振動発生
装置によれば、溝部１３内にモータの回転軸１２を嵌め
込み、この溝部１３の両側壁を形成する壁部１４の先端
部端面のうち、外周側部分１４ａを残して、溝部１３側
から外周側までの幅寸法Ｗのうち、溝部１３側の縁部か
ら０．２５Ｗ〜０．９Ｗの範囲の部分１４ｂを、軸線Ｏ
方向の全長にわたって、これよりも長辺寸法の大きな加
締めパンチ１５により溝部１３の底側に向けて加締めて
いるので、図９および図１０に示した従来の振動発生装
置に比べて、より小さな加締め力によって振動子を回転
軸に結合させることができる。According to the vibration generator of the small radio having the above structure, the rotary shaft 12 of the motor is fitted in the groove 13, and the end surface of the tip portion of the wall portion 14 forming both side walls of the groove 13 is Of the width dimension W from the groove portion 13 side to the outer peripheral side, the portion 14b in the range of 0.25W to 0.9W from the edge portion on the groove portion 13 side is left with the outer peripheral side portion 14a.
Since the caulking punch 15 having a longer side dimension than this is caulking toward the bottom side of the groove portion 13 over the entire length in the direction, it is more effective than the conventional vibration generator shown in FIGS. 9 and 10. The oscillator can be coupled to the rotary shaft with a small crimping force.
【００２７】この際に、加締められない壁部１４の外周
部分１４ａが、加締め部分１４ｂにおける塑性変形に対
して壁部として作用するために、加締め部分１４ｂの大
部分が溝部１３側へと膨出する結果、回転軸１２を溝部
１３の底部と、膨出した両壁部１４との３点によって強
固に振動子１０を回転軸１２に固定することができる。
このため、振動子１０の製造が容易であることに加え
て、さらに小さな加締め力によっても高い引抜き強度で
振動子をモータの回転軸に結合させることができる。At this time, since the outer peripheral portion 14a of the non-crimped wall portion 14 acts as a wall portion against the plastic deformation of the crimped portion 14b, most of the crimped portion 14b is moved to the groove portion 13 side. As a result of the bulging, the rotary shaft 12 can be firmly fixed to the rotary shaft 12 by the three points of the bottom portion of the groove portion 13 and the bulged wall portions 14.
Therefore, in addition to the ease of manufacturing the vibrator 10, the vibrator can be coupled to the rotating shaft of the motor with a high pulling strength even with a smaller crimping force.
【００２８】特に、振動子１０においては、溝部１３
を、回転軸１２の中心角１８０°以上の範囲を内在させ
る大きさに形成し、かつ溝部１３の開口幅Ｗ1 を、回転
軸１２の直径Ｄとの比（Ｗ1 ／Ｄ）が０．５０〜０．９
５の範囲になるように設定しているので、小さな加締め
力によって、振動子１０を回転軸１２に強固に固定する
ことができる。Particularly, in the vibrator 10, the groove portion 13
Is formed to have a size such that the range of the central angle of the rotary shaft 12 of 180 ° or more is included, and the ratio (W 1 / D) of the opening width W 1 of the groove portion 13 to the diameter D of the rotary shaft 12 is 0. 50-0.9
Since the range is set to 5, the vibrator 10 can be firmly fixed to the rotating shaft 12 with a small crimping force.
【００２９】しかも、壁部１４の先端部端面を、軸線方
向の両端面１４ｄ、１４ｅ間の全長にわたって加締めて
いるので、振動子１０の小型化に伴って、その軸線方向
の端面間の長さ寸法が小さくなった場合においても、充
分な引抜き強度を得ることができる。加えて、加締めパ
ンチ１５として、振動子１０の軸線Ｏ方向の長さ寸法よ
りも大きなものを使用することにより、一の加締めパン
チ１５によって、上記長さ寸法の異なる複数種類の振動
子の加締め作業を行うことができる。Moreover, since the end facet of the wall portion 14 is crimped over the entire length between the end faces 14d and 14e in the axial direction, the length between the end faces in the axial direction is reduced as the size of the vibrator 10 is reduced. Sufficient pull-out strength can be obtained even when the critical dimension becomes small. In addition, by using a crimping punch 15 having a length larger than the length of the vibrator 10 in the direction of the axis O, one crimping punch 15 can be used for a plurality of kinds of vibrators having different lengths. The caulking work can be performed.
【００３０】このように、上記振動発生装置によれば、
従来よりも小さな加締め力によって、強固に振動子１０
を回転軸１２に固定することができるため、振動子１０
の小型軽量化、ひいては振動発生装置および小型無線機
全体の小型軽量化を実現することができる。また、加締
め荷重を小さくし、かつ振動子１０の特に壁部１４にお
けるクラックの発生を防ぐことができるため、振動発生
装置の生産性を向上させるとともに、振動子１０の高比
重化による振動効率の向上が可能となる。さらに、一の
加締めパンチ１５によって複数種類の振動子１の加締め
を行うことができるために経済性にも優れる。As described above, according to the vibration generator,
The vibrator 10 is firmly fixed with a smaller crimping force than before.
The oscillator 10 can be fixed to the rotary shaft 12,
It is possible to reduce the size and weight of the device, and thus reduce the size and weight of the vibration generator and the small radio device. Further, since the caulking load can be reduced and the generation of cracks in the wall portion 14 of the vibrator 10 can be prevented, the productivity of the vibration generator can be improved and the vibration efficiency due to the high specific gravity of the vibrator 10 can be improved. Can be improved. Furthermore, since one crimping punch 15 can crimp a plurality of types of vibrators 1, it is excellent in economic efficiency.
【００３１】なお、第１の実施形態においては、振動子
１０として、偏心荷重部１１が軸線Ｏを中心とする半円
形状に形成されたものを示したが、これに限るものでは
なく、本発明は、例えば図４に示すように、軸線を中心
とする横断面扇形に形成した振動子１６や、あるいは図
５に示すように、偏心荷重部１７の全体が、中心角１８
０°未満（図では９０°）の扇形であって中心部分が除
かれてなる横断面切頭扇形状に形成され、これにより回
転中心側に平坦面（壁部の先端部端面）１８が形成され
るとともに、この平坦部１８の中央に上記回転軸が嵌ま
り込むＵ字状の溝部１７ａが形成された振動子１９に対
しても同様に適用することができる。In the first embodiment, as the vibrator 10, the eccentric load portion 11 formed in a semicircular shape centered on the axis O is shown, but the present invention is not limited to this. According to the invention, for example, as shown in FIG. 4, the vibrator 16 formed in a fan-shaped transverse cross section around the axis, or, as shown in FIG. 5, the entire eccentric load portion 17 has a central angle 18
It has a fan shape of less than 0 ° (90 ° in the figure) and has a cross-section truncated fan shape in which the central portion is removed, whereby a flat surface (end surface of the wall portion) 18 is formed on the rotation center side. The same can be applied to the vibrator 19 in which the U-shaped groove portion 17a into which the rotary shaft is fitted is formed in the center of the flat portion 18.
【００３２】また、上述した第１の実施形態において
は、溝部１３として、モータの回転軸１２が嵌まり込む
底部が回転軸１２の直径とほぼ等しい半円形状に形成さ
れ、開口部の近傍が上記回転軸１２の露出部分を軸線Ｏ
方向の両側から間隔をおいて覆うように形成されること
により、回転軸１２の中心角１８０°以上の範囲を内在
させる大きさに形成されたものを示したが、当該溝部１
３の形状としては各種の変形例が適用可能である。Further, in the above-described first embodiment, as the groove portion 13, the bottom portion into which the rotary shaft 12 of the motor is fitted is formed in a semicircular shape substantially equal to the diameter of the rotary shaft 12, and the vicinity of the opening is formed. The exposed portion of the rotary shaft 12 is the axis O
The groove portion 1 is formed so as to be covered from both sides in the direction at a distance so that the rotation shaft 12 has a central angle of 180 ° or more.
Various modifications can be applied to the shape of 3.
【００３３】図６は、上記溝部１３の形状の変形例を示
すもので、図６（ａ）に示す溝部２０は、回転軸１２が
嵌り込む部分が対向する一対のＶ字状壁面２０ａによっ
て全体として内角が９０°の略菱形状に形成され、開口
部２０ｂの近傍に上記回転軸１２の露出部分を軸線方向
両側から間隔をおいて覆う膨出部２０ｃが一体に形成さ
れたものである。また、図６（ｂ）に示す溝部２１は、
底面２１ａと垂直な側壁２１ｂおよび開口部２１ｃ近傍
の膨出部２０ｄによって、全体として略平方形状に形成
されたものである。さらに、図６（ｃ）に示す溝部２２
は、図６（ｂ）に示した溝部２１の側壁２１ｂの上部と
膨出部２１ｄの下面との間を、回転軸１２の直径と曲率
がほぼ等しい円弧状壁面２２ａによって形成したもので
ある。また、図６（ｄ）に示す溝部２３は、底部をＶ字
状の底面２３ａによって形成し、この底面２３ａから膨
出部２３ｂの下面にいたる側壁部分を、回転軸１２の直
径と曲率がほぼ等しい円弧状壁面２３ｃによって形成し
たものである。FIG. 6 shows a modification of the shape of the groove portion 13. The groove portion 20 shown in FIG. 6 (a) is formed by a pair of V-shaped wall surfaces 20a facing each other at the portions where the rotary shaft 12 is fitted. Is formed in a substantially rhombic shape with an internal angle of 90 °, and a bulge portion 20c is integrally formed in the vicinity of the opening portion 20b to cover the exposed portion of the rotary shaft 12 from both sides in the axial direction at intervals. Further, the groove portion 21 shown in FIG.
The side wall 21b perpendicular to the bottom surface 21a and the bulging portion 20d near the opening 21c are formed into a substantially square shape as a whole. Further, the groove portion 22 shown in FIG.
Is formed by an arcuate wall surface 22a between the upper portion of the side wall 21b of the groove portion 21 and the lower surface of the bulging portion 21d shown in FIG. Further, the groove portion 23 shown in FIG. 6D has a bottom portion formed by a V-shaped bottom surface 23a, and the side wall portion from the bottom surface 23a to the lower surface of the bulging portion 23b has a diameter and a curvature of the rotary shaft 12 which are substantially the same. It is formed by equal arcuate wall surfaces 23c.
【００３４】そして、第１の実施形態と同様に壁部を加
締めることにより、溝部２０にあってはＶ字状壁面２０
ａの４点において、溝部２１によれば底面２１ａと側壁
２１ｂおよび膨出部２１ｄの下面の５点において、また
溝部２２によれば底面２１ａと円弧状壁面２２ａの３点
において、さらに溝部２３にあっては、底面２３ａと円
弧状壁面２３ｃの４点において、それぞれ当該振動子１
０を回転軸１２に強固に固定することができる。Then, by caulking the wall portion as in the first embodiment, the groove portion 20 has a V-shaped wall surface 20.
4 points a, 5 points on the bottom surface 21a and the side wall 21b and the lower surface of the bulging portion 21d according to the groove portion 21, and 3 points on the bottom surface 21a and the arc-shaped wall surface 22a according to the groove portion 22 and further to the groove portion 23. That is, at the four points of the bottom surface 23a and the arc-shaped wall surface 23c, the vibrator 1
0 can be firmly fixed to the rotary shaft 12.
【００３５】なお、本発明は、上述したものの他、図７
（ａ）に示すように、底部が回転軸１２の直径とほぼ等
しい円弧状に形成されたＵ字状の溝部２４や、図７
（ｂ）に示すような底面と側壁とからなるコ字状の溝部
２５、さらには図７（ｃ）に示すような底部がＶ字状壁
面によって形成された溝部２６等を有する振動子にも適
用可能である。It should be noted that the present invention is not limited to the above-mentioned one, and is also shown in FIG.
As shown in FIG. 7A, a U-shaped groove portion 24 having a bottom portion formed in an arc shape having a diameter substantially equal to the diameter of the rotating shaft 12, and FIG.
A vibrator having a U-shaped groove portion 25 having a bottom surface and a side wall as shown in FIG. 7B, and a groove portion 26 having a bottom portion formed by a V-shaped wall surface as shown in FIG. Applicable.
【００３６】（第２の実施の形態）図８は、本発明の第
２の実施形態を示すもので、図１および図２に示したも
のと同一構成部分に付いては、同一符号を付してその説
明を簡略化する。図８に示すように、この振動発生装置
においては、溝部１３が形成された壁部１４の先端部端
面が、上記回転軸１２の軸線方向に、図示されないモー
タ側の端面１４ｄとの間の部分１４ｃを残して、他端面
１４ｅに至るまでの部分が加締められることにより、振
動子１０が回転軸１２に一体的に結合されている。(Second Embodiment) FIG. 8 shows a second embodiment of the present invention, in which the same components as those shown in FIGS. 1 and 2 are designated by the same reference numerals. To simplify the explanation. As shown in FIG. 8, in this vibration generating device, the end face of the wall portion 14 in which the groove 13 is formed is located between the end face 14d on the motor side (not shown) in the axial direction of the rotary shaft 12. The vibrator 10 is integrally coupled to the rotary shaft 12 by crimping the portion up to the other end surface 14e except for 14c.
【００３７】以上の構成からなる振動発生装置において
も、第１の実施形態に示したものと同様の作用効果が得
られる他、特に本実施形態に示す振動発生装置によれ
ば、壁部１４の先端部端面を、モータ側の端面１４ｄと
の間の部分１４ｃを残して、他端面１４ｄに至るまでの
部分を加締めているので、加締められた壁部１４が端面
１４ｄ側に膨出することによって、モータの軸受等と干
渉することを未然に防ぐことができる。このため、特に
振動子とモータとの間隔が僅かである小型の振動発生装
置に適用した場合に好適である。Also in the vibration generator having the above structure, the same effect as that of the first embodiment can be obtained. In particular, according to the vibration generator of the present embodiment, the wall portion 14 The tip end face is swaged up to the other end face 14d, leaving a portion 14c between the end face 14d on the motor side, so that the swaged wall part 14 bulges toward the end face 14d side. As a result, it is possible to prevent interference with the bearing of the motor or the like. Therefore, it is particularly suitable when applied to a small vibration generator in which the distance between the vibrator and the motor is small.
【００３８】[0038]
【発明の効果】以上説明したように、請求項１〜４のい
ずれかに記載の小型無線機の振動発生装置によれば、従
来よりも小さな加締め力によって、強固に振動子をモー
タの回転軸に固定することができるため、振動子の小型
軽量化、ひいては振動発生装置および小型無線機全体の
小型軽量化を実現することができるとともに、加締め荷
重を小さくし、かつ振動子のクラックの発生を防ぐこと
ができる結果、振動発生装置の生産性を向上させること
ができ、かつ振動子の高比重化による振動効率の向上が
可能となる。As described above, according to the vibration generator for a small radio device according to any one of claims 1 to 4, the vibrator is firmly rotated by the caulking force smaller than the conventional one. Since it can be fixed to the shaft, it is possible to reduce the size and weight of the vibrator, which in turn makes it possible to reduce the size and weight of the vibration generator and the small radio as a whole, while reducing the caulking load and preventing cracks in the vibrator. As a result, the productivity of the vibration generator can be improved, and the vibration efficiency can be improved by increasing the specific gravity of the vibrator.
【００３９】ここで、特に請求項２に記載の発明によれ
ば、モータ側の端部との間を残して、他端面に至るまで
の部分を加締めることにより、一般に振動子とモータと
の間隔が僅かである小型の振動発生装置においても、加
締められた壁部が膨出することによってモータと干渉す
ることを未然に防ぐことができ、さらに請求項４に記載
の発明によれば、加締めた後において、壁部の塑性変形
により、一層効果的に溝部の開口部を塞いで振動子を強
固に固定することができるといった効果が得られる。According to the second aspect of the invention, in particular, the portion extending to the other end surface is caulked while leaving a gap between the end portion on the motor side and the end portion on the motor side. Even in a small vibration generator having a small interval, it is possible to prevent interference with the motor due to swelling of the crimped wall portion. Further, according to the invention of claim 4, After the caulking, it is possible to more effectively block the opening of the groove portion by the plastic deformation of the wall portion and firmly fix the vibrator.
【図１】本発明の第１の実施形態における加締め状態を
示す正面図である。FIG. 1 is a front view showing a crimped state according to a first embodiment of the present invention.
【図２】図１の側面図である。FIG. 2 is a side view of FIG.
【図３】第１の実施形態を示す斜視図である。FIG. 3 is a perspective view showing a first embodiment.
【図４】本発明の他の実施形態における振動子の形状を
示す正面図である。FIG. 4 is a front view showing the shape of a vibrator according to another embodiment of the present invention.
【図５】本発明のその他の実施形態における振動子の形
状を示す正面図である。FIG. 5 is a front view showing the shape of a vibrator according to another embodiment of the present invention.
【図６】図１の溝部の他の形状を示す縦断面図である。6 is a vertical cross-sectional view showing another shape of the groove portion of FIG.
【図７】本発明の他の実施形態における溝部の各種形状
を示す縦断面図である。FIG. 7 is a vertical cross-sectional view showing various shapes of a groove portion according to another embodiment of the present invention.
【図８】本発明の第２の実施形態を示す斜視図である。FIG. 8 is a perspective view showing a second embodiment of the present invention.
【図９】従来の振動発生装置における加締め状態を示す
正面図である。FIG. 9 is a front view showing a crimped state in a conventional vibration generator.
【図１０】図９のように加締められた従来の振動発生装
置を示す斜視図である。FIG. 10 is a perspective view showing a conventional vibration generator that has been crimped as shown in FIG.
１０、１６、１９ 振動子 １１、１７ 偏心荷重部 １２ モータの回転軸 １３、２０、２１、２２、２４、２５、２６ 溝部 １４ 壁部 １４ａ 外周側部分 １４ｂ 溝部側部分（加締め部分） １４ｄ、１４ｅ 端面 １５ 加締めパンチ Ｗ 壁部先端部端面の幅寸法 Ｗ1 溝部の開口幅 Ｄ 回転軸の直径 Ｏ 軸線10, 16, 19 Oscillator 11, 17 Eccentric load part 12 Motor rotation shafts 13, 20, 21, 22, 24, 25, 26 Groove part 14 Wall part 14a Outer peripheral side part 14b Groove part side part (crimping part) 14d, 14e End face 15 Crimping punch W Width dimension of end face of wall end W 1 Opening width D of groove D Diameter of rotating shaft O Axis
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B06B 1/00 - 3/04 ─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. 7 , DB name) B06B 1/00-3/04
Claims (4)
してなる小型無線機の振動発生装置において、 上記振動子は、偏心荷重部に上記回転軸が嵌まり込む溝
部が形成され、この溝部の両側壁を形成する壁部が対向
して形成されるとともに、これら壁部の先端部端面のう
ち外周側部分を残した上記溝部側の部分であって、かつ
上記回転軸の軸線方向の少なくとも一方の端部に至るま
での部分が、上記溝部の開口側から底側に向けて加締め
られることにより、上記回転軸に一体的に結合されてい
ることを特徴とする小型無線機の振動発生装置。1. A vibration generator for a small wireless device, wherein a vibrator is integrally coupled to a rotary shaft of a motor, wherein the vibrator has a groove portion into which an eccentric load portion fits, the rotary shaft. The wall portions forming both side walls of the groove portion are formed so as to face each other, and are portions on the groove portion side of the end portions of the end portions of the wall portions that remain on the outer peripheral side, and in the axial direction of the rotating shaft. A portion up to at least one end of the groove portion is caulked from the opening side of the groove portion toward the bottom side, thereby being integrally coupled to the rotary shaft. Vibration generator.
軸線方向に、上記モータ側の端面との間を残して、他端
面に至るまでの部分が加締められることにより、上記回
転軸に一体的に結合されていることを特徴とする請求項
１に記載の小型無線機の振動発生装置。2. The rotating end portion of the wall portion is swaged in the axial direction of the rotating shaft by caulking a portion up to the other end portion, leaving a gap between the end portion on the motor side. The vibration generator for a small radio device according to claim 1, wherein the vibration generator is integrally connected to the shaft.
までの幅寸法Ｗのうち、上記溝部側の縁部から０．２５
Ｗ〜０．９Ｗの範囲が加締められていることを特徴とす
る請求項１または２に記載の小型無線機の振動発生装
置。3. The width dimension W of the end face of the tip portion from the groove portion side to the outer peripheral side is 0.25 from the edge portion on the groove portion side.
The vibration generator for a small radio device according to claim 1 or 2, wherein the range of W to 0.9 W is crimped.
角１８０°以上の範囲を内在させる大きさに形成されて
いるとともに、上記溝部の開口幅Ｗ1 は、上記モータの
上記回転軸の直径Ｄとの比（Ｗ1 ／Ｄ）が０．５０〜
０．９５の範囲になるように設定されていることを特徴
とする請求項１ないし３のいずれかに記載の小型無線機
の振動発生装置。4. The groove portion of the vibrator is formed to have a size such that the range of the central angle of the rotating shaft of 180 ° or more is included therein, and the opening width W 1 of the groove portion is the rotating shaft of the motor. Ratio (W 1 / D) to the diameter D of 0.50
The vibration generator for a small radio device according to any one of claims 1 to 3, wherein the vibration generator is set to a range of 0.95.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000354035A JP3528787B2 (en) | 2000-11-21 | 2000-11-21 | Vibration generator for small radio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000354035A JP3528787B2 (en) | 2000-11-21 | 2000-11-21 | Vibration generator for small radio |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002153819A JP2002153819A (en) | 2002-05-28 |
| JP3528787B2 true JP3528787B2 (en) | 2004-05-24 |
Family
ID=18826696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000354035A Expired - Lifetime JP3528787B2 (en) | 2000-11-21 | 2000-11-21 | Vibration generator for small radio |
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| Country | Link |
|---|---|
| JP (1) | JP3528787B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3614093B2 (en) * | 2000-01-28 | 2005-01-26 | 三菱マテリアルシ−エムアイ株式会社 | Small radio vibration generator |
-
2000
- 2000-11-21 JP JP2000354035A patent/JP3528787B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002153819A (en) | 2002-05-28 |
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