JPH075931B2 - Resonator for small vibration generator and manufacturing method thereof - Google Patents
Resonator for small vibration generator and manufacturing method thereofInfo
- Publication number
- JPH075931B2 JPH075931B2 JP2205364A JP20536490A JPH075931B2 JP H075931 B2 JPH075931 B2 JP H075931B2 JP 2205364 A JP2205364 A JP 2205364A JP 20536490 A JP20536490 A JP 20536490A JP H075931 B2 JPH075931 B2 JP H075931B2
- Authority
- JP
- Japan
- Prior art keywords
- vibrator
- vibration generator
- small vibration
- specific gravity
- motor
- 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
Landscapes
- Powder Metallurgy (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Mobile Radio Communication Systems (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、小型無線呼出機や小型電気剃刀等の各種小型
振動発生装置に組み込まれる振動子およびその製造方法
に関するものである。Description: TECHNICAL FIELD The present invention relates to a vibrator incorporated in various small vibration generators such as a small wireless calling machine and a small electric razor, and a manufacturing method thereof.
［従来の技術］ 最近、ページング方式の小型無線呼出機として、小型の
振動発生装置を内蔵し、呼出音を発する代わりに音を立
てず振動で呼び出しを知らせる形式のものが普及しつつ
ある。[Prior Art] Recently, as a paging type small-sized wireless calling machine, a type in which a small vibration generator is built in and a call is notified by vibration instead of making a ringing sound is becoming popular.
第３図および第４図は、この種の小型振動発生装置の一
例を示すものである。図中符号１は小型無線呼出機の信
号発生回路に接続される小型モータで、このモータ１の
回転軸1Aには黄銅製ブッシュが圧入固定され、さらにこ
のブッシュ２の外周に扇板状の振動子３が偏心して接着
固定されている。この振動子３は、タングステン焼結合
金からなり、比重が極めて大きいものである。3 and 4 show an example of this type of small vibration generator. In the figure, reference numeral 1 is a small motor connected to a signal generating circuit of a small wireless calling machine. A brass bush is press-fitted and fixed to the rotary shaft 1A of the motor 1, and a fan plate-like vibration is further provided on the outer periphery of the bush 2. The child 3 is eccentrically attached and fixed. The vibrator 3 is made of a sintered tungsten alloy and has an extremely large specific gravity.
なお、前記回転軸1Aに振動子３を直接接着していないの
は、振動子３が脆く、回転軸1Aに接着固定する他に簡易
な手段が無い反面、回転軸1Aとの接着剤に対する濡れ性
が悪く、十分な接着強度が得られないとの理由による。
このため、圧入固定が容易で、接着剤に対する濡れ性の
良い黄銅製ブッシュ２を介装することにより、接合強度
の向上を図っているのである。The vibrator 3 is not directly adhered to the rotary shaft 1A because the vibrator 3 is fragile and there is no simple means other than the adhesive fixing to the rotary shaft 1A, but the adhesive to the rotary shaft 1A gets wet. The reason is that the adhesiveness is poor and sufficient adhesive strength cannot be obtained.
Therefore, the joining strength is improved by interposing the brass bush 2 which can be easily press-fitted and fixed and has good wettability to the adhesive.
「発明が解決しようとする問題点」 このように、上記のような小型振動発生装置に用いられ
ている従来の振動子にあっては、特性上極めて脆く、よ
って回転軸1Aに直接固定することができないために、こ
の振動子３を回転軸1Aに固定するに際し、回転軸1Aに
ブッシュ２を圧入固定し、ブッシュ２に接着剤を塗布
して振動子３を取り付けるという２段階の手間を要する
ため、生産性が低くコストがかかるという問題があっ
た。“Problems to be Solved by the Invention” As described above, the conventional vibrator used in the above-described small-sized vibration generator is extremely fragile in terms of characteristics, and therefore should be directly fixed to the rotary shaft 1A. Therefore, when fixing the vibrator 3 to the rotary shaft 1A, the bush 2 is press-fitted and fixed to the rotary shaft 1A, the bush 2 is coated with an adhesive, and the vibrator 3 is attached, which requires two steps. Therefore, there is a problem that productivity is low and cost is high.
また、振動子３と回転軸1Aとの接着界面に汚れが付着
し、振動子３の接着不良がしばしば生じるため、歩留ま
りが悪いという欠点もあった。In addition, the adhesion interface between the vibrator 3 and the rotary shaft 1A is contaminated with dirt, which often results in poor adhesion of the vibrator 3, resulting in poor yield.
本発明は上記問題点を解決するためになされたもので、
小型振動発生装置のモータに直接固定することができる
振動子およびその製造方法を提供することを目的とする
ものである。The present invention has been made to solve the above problems,
It is an object of the present invention to provide a vibrator that can be directly fixed to a motor of a small-sized vibration generator and a method for manufacturing the vibrator.
［問題点を解決するための手段］ 本発明の小型振動装置用振動子の製造方法は、Ｗ−Ni−
Fe系、Ｗ−Ni−Cu系またはＷ−Mo−Ni−Fe系の組成を有
し、比重が17〜18.5g/cm3である混合粉末を圧粉してそ
の偏心位置に小型振動発生装置のモータの回転軸が貫入
される取付孔が形成された圧粉体を得、ついで上記圧粉
体を液相焼結した後に、さらに加熱して冷却する熱処理
を施すことを特徴とするものである。[Means for Solving Problems] A method for manufacturing a vibrator for a small vibration device according to the present invention is based on W-Ni-
A small vibration generator at the eccentric position by compacting a mixed powder having a composition of Fe, W-Ni-Cu or W-Mo-Ni-Fe and having a specific gravity of 17 to 18.5 g / cm 3. The method for obtaining a green compact having a mounting hole through which the rotating shaft of the motor of 1 is formed, and then subjecting the green compact to liquid phase sintering, and then subjecting it to heat treatment of further heating and cooling. is there.
また、本発明の小型振動発生装置用振動子は、Ｗ−Ni−
Fe系、Ｗ−Ni−Cu系またはＷ−Mo−Ni−Fe系の組成を有
する混合粉末を圧粉して液相焼結した後、加熱して冷却
する熱処理が施された比重が17〜18.5g/cm3であり、か
つその偏心位置にモータの回転軸が貫入される取付孔が
形成されていることを特徴とするものである。Further, the vibrator for a small-sized vibration generator of the present invention is W-Ni-
A mixed powder having a composition of Fe-based, W-Ni-Cu-based or W-Mo-Ni-Fe-based is pressed and liquid phase sintered, and then heat-treated by heating and cooling to give a specific gravity of 17 to It is characterized in that it is 18.5 g / cm 3 and that a mounting hole through which the rotation shaft of the motor penetrates is formed in the eccentric position.
［実施例］ 第１図および第２図は、本発明の振動子の一例が固定さ
れた小型無線呼出機の振動発生装置を示す縦断面図およ
び正面図である。[Embodiment] FIG. 1 and FIG. 2 are a longitudinal sectional view and a front view showing a vibration generator of a small wireless calling machine to which an example of a vibrator of the present invention is fixed.
図中符号10は扇板状の振動子でり、この振動子10は、Ｗ
−Ni−Fe系、Ｗ−Ni−Cu系、Ｗ−Mo−Ni−Fe系等の17〜
18.5g/cm3程度の比重を有する超重合金材料を、展性を
付与する焼結方法により成形したものである。Reference numeral 10 in the figure is a fan-shaped vibrator, and this vibrator 10 is
-Ni-Fe system, W-Ni-Cu system, W-Mo-Ni-Fe system, etc.
A super-polymerized gold material having a specific gravity of about 18.5 g / cm 3 is formed by a sintering method that imparts malleability.
ここで、上述した比重となる上記各系の具体的な組成範
囲は、Ｗ−Ni−Fe系においては、タングステン粉末89〜
97wt％、ニッケル粉末1.5〜7wt％、鉄粉末0.5〜4wt％、
Ｗ−Ni−Cu系においては、タングステン粉末89〜97％、
ニッケル粉末1.5〜7wt％、銅粉末0.5〜4wt％、Ｗ−Mo−
Ni−Fe系においては、タングステン粉末89〜97wt％、ニ
ッケル粉末1.5〜6wt％、鉄粉末0.5〜4wt％、およびモリ
ブデン粉末２〜5wt％であり、さらに具体的に例示して
列挙すれば、 W90％ Ni6％ Cu4％；理論比重17.29g/cm3 W90％ Ni7％ Fe3％；理論比重17.15g/cm3 W95％ Ni3％ Cu2％；理論比重18.24g/cm3 W95％ Ni3.5％ Fe1.5％；理論比重18.16g/cm3 W97％ Ni1.8％ Cu1.2％；理論比重18.65g/cm3 W97％ Ni2.1％ Fe0.9％；理論比重18.60g/cm3 W90％ Mo4％ Ni4％ Fe2％；理論比重17.36g/cm3 W95％ Mo2％ Ni2％ Fe1％：理論比重18.28g/cm3 等の組成を有するものである。Here, the specific composition range of each of the above systems having the above-described specific gravity is, in the W-Ni-Fe system, tungsten powder 89 to
97wt%, nickel powder 1.5-7wt%, iron powder 0.5-4wt%,
In the W-Ni-Cu system, tungsten powder 89-97%,
Nickel powder 1.5-7 wt%, copper powder 0.5-4 wt%, W-Mo-
In the Ni-Fe system, tungsten powder 89 to 97 wt%, nickel powder 1.5 to 6 wt%, iron powder 0.5 to 4 wt%, and molybdenum powder 2 to 5 wt%, if more specifically exemplified and listed, W90 % Ni6% Cu4%; theoretical specific gravity 17.29g / cm 3 W90% Ni7% Fe3%; theoretical specific gravity 17.15g / cm 3 W95% Ni3% Cu2%; theoretical specific gravity 18.24g / cm 3 W95% Ni3.5% Fe1.5 %; Theoretical specific gravity 18.16g / cm 3 W97% Ni1.8% Cu1.2%; theoretical specific gravity 18.65g / cm 3 W97% Ni2.1% Fe0.9%; theoretical specific gravity 18.60g / cm 3 W90% Mo4% Ni4 % Fe @ 2%; theoretical density 17.36g / cm 3 W95% Mo2% Ni2% Fe1%: those having a composition such as a theoretical density 18.28 g / cm 3.
そして、上記振動子10を製造するには、先ずこれらの組
成からなる混合粉末を１〜4ton/cm2で扇板状に圧粉し、
この圧粉体を０〜−60℃の露点の水素気流またはアンモ
ニア分解ガス中で液相焼結する。さらに、真空，中性，
還元性のいずれかの雰囲気中において700〜1470℃に加
熱後、少なくとも300℃まで40℃/min.の冷却速度で急冷
する熱処理を施す。Then, in order to manufacture the vibrator 10, first, a mixed powder having these compositions is pressed into a fan plate shape at 1 to 4 ton / cm 2 ,
This green compact is liquid-phase sintered in a hydrogen stream having a dew point of 0 to -60 ° C or an ammonia decomposition gas. In addition, vacuum, neutral,
After heating to 700 to 1470 ° C. in any reducing atmosphere, heat treatment is performed to quench at least 300 ° C. at a cooling rate of 40 ° C./min.
以上の製造方法によれば、高い密度の上記振動子10に一
般的な同種合金に比べて格段に高い展性を付与すること
ができる。具体的に示せば、比重が17.00〜17.29g/cm3
である90W−6Ni−4Cuは、熱処理前の延びが４％である
のに対して、熱処理後はその延びが15〜30％と大幅に向
上した。同様にして、比重が18.00〜18.24である95W−3
Ni−3Cuでは、熱処理により延びが３％から10〜25％
に、比重が17.25〜17.36g/cm3である90W−4o−4Ni−2Fe
では、１〜３％から10〜20％に、比重が17.00〜17.15で
ある、90W−7Ni−3Feでは、１〜５％から15〜30％に、
比重が18.00〜18.16である95W−3.5Ni−1.5Feでは、１
〜６％から15〜30％にと、いずれも上記熱処理により延
びが大幅に向上した。According to the above manufacturing method, it is possible to give the vibrator 10 having a high density remarkably high malleability as compared with a general homogenous alloy. Specifically, the specific gravity is 17.00 to 17.29 g / cm 3.
For 90W-6Ni-4Cu, which is 4%, the elongation before heat treatment was 4%, while the elongation after heat treatment was significantly improved to 15 to 30%. Similarly, 95W-3 with a specific gravity of 18.00-18.24
With Ni-3Cu, the elongation increases from 3% to 10-25% due to heat treatment.
90W-4o-4Ni-2Fe with a specific gravity of 17.25 to 17.36 g / cm 3.
Then, from 1 to 3% to 10 to 20%, and the specific gravity is 17.00 to 17.15. For 90W-7Ni-3Fe, from 1 to 5% to 15 to 30%,
95W-3.5Ni-1.5Fe with a specific gravity of 18.00-18.16 is 1
From 6% to 15-30%, the elongation was significantly improved by the above heat treatment.
一方、前記振動子10の扇の中心部には、モータ１の回転
軸1Aと略等しい直径の取付孔10Aが形成されており、こ
の取付孔10Aに回転軸1Aが挿入され、振動子10の薄肉側
からポンチ等で加締めることにより振動子10はモータに
固定される（図中Ｐ参照）。振動子10の抗引抜力は４〜
8kgfであることが望ましく、4kgf未満では空回りのおそ
れが生じ、他方8kgfより強固に固定することは困難であ
る。On the other hand, a mounting hole 10A having a diameter substantially equal to that of the rotating shaft 1A of the motor 1 is formed in the center of the fan of the vibrator 10, and the rotating shaft 1A is inserted into the mounting hole 10A so that the vibrator 10 The vibrator 10 is fixed to the motor by caulking with a punch or the like from the thin side (see P in the figure). The anti-pulling force of the vibrator 10 is 4 ~
8 kgf is desirable, and if it is less than 4 kgf, there is a risk of idling, while it is difficult to fix it more firmly than 8 kgf.
以上の構成からなる小型振動発生装置用振動子にあって
は、密度が高くかつ展性に優れているため、直接モータ
の回転軸に加締めることによって固定することができ
る。このため、上記小型振動発生装置の組み立て作業が
極めて容易になり、かつブッシュや接着剤を使用しない
分、当該装置のコストを低減することができる。また、
接着剤を使用して固定する構成に比べ、組み立て作業を
自動化しやすいという利点もある。The vibrator for a small vibration generator having the above structure has high density and excellent malleability, and thus can be fixed by caulking directly to the rotary shaft of the motor. Therefore, the work of assembling the small-sized vibration generator becomes extremely easy, and the cost of the device can be reduced because no bushes or adhesives are used. Also,
There is also an advantage that the assembly work can be easily automated, as compared with the configuration in which the adhesive is used for fixing.
さらに、振動子10を組み込んだ装置においては、振動子
10と回転軸1Aとの接合強度が接合界面の汚れの影響をほ
とんど受けないので、接合不要の発生頻度が小さく、歩
留まりの向上が図れる。Furthermore, in the device incorporating the vibrator 10, the vibrator
Since the bonding strength between 10 and the rotating shaft 1A is hardly affected by the dirt on the bonding interface, the frequency of unnecessary bonding is small, and the yield can be improved.
なお、本発明に係る振動子は図示の形状のみに限られ
ず、種々の変形が可能であることは勿論である。The vibrator according to the present invention is not limited to the illustrated shape and can be variously modified.
［発明の効果］ 以上説明したように、本発明の小型振動発生装置用振動
子の製造方法によれば、組成がＷ−Ni−Fe系等で比重が
17〜18.5g/cm3からなる焼結合金性の振動子に高い展性
を付与することができる。この結果、本発明の振動子に
よれば、これを加締めることによってその取付孔に貫入
されたモータの回転軸に固定することができるので、該
振動子の取付作業が極めて容易であり、よって小型振動
発生装置の製造コストを低減することができる。[Effects of the Invention] As described above, according to the method for manufacturing a vibrator for a small-sized vibration generator of the present invention, the composition is W-Ni-Fe and the specific gravity is
High malleability can be imparted to a sintered alloy oscillator consisting of 17 to 18.5 g / cm 3 . As a result, according to the vibrator of the present invention, it is possible to fix the vibrator to the rotating shaft of the motor that has penetrated into the mounting hole by caulking, so that the mounting work of the vibrator is extremely easy. The manufacturing cost of the small vibration generator can be reduced.
また、接着剤を使用する場合のように接合面の汚れ等の
影響を受けないため、振動子装置として不良品が生じに
くく、製品の歩留まりを向上することができる。Further, unlike the case where the adhesive is used, the bonded surface is not affected by dirt and the like, so that defective products are unlikely to occur as the vibrator device, and the product yield can be improved.
第１図および第２図は本発明の振動子の一例を小型振動
発生装置のモータに取り付けた状態を示す縦断面図およ
び正面図、第３図および第４図は従来の振動子を小型振
動発生装置のモータに取り付けた状態を示す縦断面図お
よび正面図である。 10……振動子。1 and 2 are a longitudinal sectional view and a front view showing an example of a vibrator of the present invention mounted on a motor of a small vibration generator, and FIGS. 3 and 4 show a conventional vibrator with a small vibration. It is a longitudinal section and a front view showing the state where it was attached to the motor of a generator. 10 ... oscillator.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｈ０４Ｑ 7/14 9297−5Ｋ Ｈ０４Ｂ 7/26 Ｗ 7304−5Ｋ １０３ Ｅ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI Technical indication location H04Q 7/14 9297-5K H04B 7/26 W 7304-5K 103 E
Claims (2)
−Ni−Fe系の組成を有し、比重が17〜18.5g/cm3である
混合粉末を圧粉してその偏心位置に小型振動発生装置の
モータの回転軸が貫入される取付孔が形成された圧粉体
を得、ついで上記圧粉体を液相焼結した後に、さらに加
熱して冷却する熱処理を施すことを特徴とする小型振動
発生装置用振動子の製造方法。1. A W-Ni-Fe system, a W-Ni-Cu system or a W-Mo system.
Has the composition -ni-Fe system, the mounting hole which the rotating shaft of the motor of the small vibration generator at its eccentric position with a specific gravity compacting the mixed powder is 17~18.5g / cm 3 is penetrated is formed A method for manufacturing a vibrator for a small vibration generator, characterized in that the obtained green compact is obtained, and then the green compact is subjected to liquid phase sintering, and then heat treatment of further heating and cooling is performed.
される振動子であって、Ｗ−Ni−Fe系、Ｗ−Ni−Cu系ま
たはＷ−Mo−Ni−Fe系の組成を有する混合粉末を圧粉し
て液相焼結した後、加熱して冷却する熱処理が施された
比重が17〜18.5g/cm3の焼結体であって、かつその偏心
位置に上記モータの回転軸が貫入される取付孔が形成さ
れていることを特徴とする小型振動発生装置用振動子。2. A vibrator fixed to a rotary shaft of a motor of a small vibration generator, which has a composition of W-Ni-Fe system, W-Ni-Cu system or W-Mo-Ni-Fe system. after the mixed powder was liquid-phase sintering and powder, specific gravity subjected to heat treatment for heating and cooling is a sintered body of 17~18.5g / cm 3, and the rotation of the motor to the eccentric position A vibrator for a small vibration generator, characterized in that a mounting hole through which a shaft penetrates is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2205364A JPH075931B2 (en) | 1990-08-02 | 1990-08-02 | Resonator for small vibration generator and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2205364A JPH075931B2 (en) | 1990-08-02 | 1990-08-02 | Resonator for small vibration generator and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03146605A JPH03146605A (en) | 1991-06-21 |
| JPH075931B2 true JPH075931B2 (en) | 1995-01-25 |
Family
ID=16505634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2205364A Expired - Lifetime JPH075931B2 (en) | 1990-08-02 | 1990-08-02 | Resonator for small vibration generator and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH075931B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0735500Y2 (en) * | 1992-07-01 | 1995-08-09 | 三菱マテリアル株式会社 | Vibration generator for small wireless caller |
| US5821441A (en) * | 1993-10-08 | 1998-10-13 | Sumitomo Electric Industries, Ltd. | Tough and corrosion-resistant tungsten based sintered alloy and method of preparing the same |
| JP2983822B2 (en) * | 1993-12-22 | 1999-11-29 | 三菱マテリアル 株式会社 | Vibration generator for small wireless pager |
| JP3017387B2 (en) * | 1993-12-22 | 2000-03-06 | 三菱マテリアル株式会社 | Vibration generator for small wireless pager |
| JPH07216490A (en) * | 1994-02-04 | 1995-08-15 | Nippon Yakin Kogyo Co Ltd | Tungsten alloy for golf club heads |
| US6533996B2 (en) | 2001-02-02 | 2003-03-18 | The Boc Group, Inc. | Method and apparatus for metal processing |
| KR100494734B1 (en) * | 2002-10-24 | 2005-06-13 | 한성재 | Manufacturing method of a vibrator for vibration motor of mobile phone |
| JP5547561B2 (en) * | 2010-06-22 | 2014-07-16 | Ｊｆｅ精密株式会社 | Precision instrument weight made of sintered tungsten-based alloy |
| JP6840904B1 (en) * | 2019-03-29 | 2021-03-10 | 日本タングステン株式会社 | Tungsten alloy wire and medical equipment using it |
-
1990
- 1990-08-02 JP JP2205364A patent/JPH075931B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03146605A (en) | 1991-06-21 |
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