JPS6364582A - Rotor/mover for ultrasonic wave motor - Google Patents
Rotor/mover for ultrasonic wave motorInfo
- Publication number
- JPS6364582A JPS6364582A JP61208979A JP20897986A JPS6364582A JP S6364582 A JPS6364582 A JP S6364582A JP 61208979 A JP61208979 A JP 61208979A JP 20897986 A JP20897986 A JP 20897986A JP S6364582 A JPS6364582 A JP S6364582A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- stator
- mover
- oscillation frequency
- unit
- 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
Links
- 239000000463 material Substances 0.000 claims abstract description 14
- 125000003118 aryl group Chemical group 0.000 claims abstract 2
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920000728 polyester Polymers 0.000 claims 1
- 229920001225 polyester resin Polymers 0.000 abstract description 2
- 239000004645 polyester resin Substances 0.000 abstract description 2
- 230000010355 oscillation Effects 0.000 abstract 4
- 230000000750 progressive effect Effects 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000004962 Polyamide-imide Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229920002312 polyamide-imide Polymers 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
- H02N2/16—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors using travelling waves, i.e. Rayleigh surface waves
- H02N2/163—Motors with ring stator
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
Description
【発明の詳細な説明】
く従来技術の問題点及び本発明の目的〉圧電体の曲げ振
動（超音波振動）を利用する表面波モータおよび超音波
モータ装置については、本出願人より開示されているが
、本発明は超音波モータの回転子／移動子の改良に関す
るものである。[Detailed Description of the Invention] Problems of the Prior Art and Objects of the Present Invention A surface wave motor and an ultrasonic motor device that utilize bending vibration (ultrasonic vibration) of a piezoelectric body have been disclosed by the applicant. However, the present invention relates to an improvement of the rotor/mover of an ultrasonic motor.
従来の回転子／移動子を構成する摺動体は、高摩擦係数
のり弾性体（ウレタン系樹脂）からできていたが、６１
００時間の運転後には、摺動体に固定子の摩耗粉が付着
し、性黛が低下した。The sliding body constituting the conventional rotor/slider was made of an elastic material (urethane resin) with a high coefficient of friction, but 61
After 00 hours of operation, abrasion powder from the stator adhered to the sliding body, resulting in a decrease in durability.
また、耐摩耗性の高いグラファイト入りポリアミドイミ
ド樹脂の摺動体を用いることにより耐久性が改善された
が、その樹脂をスライダーの形状にするには、射出品か
らリング状に削り出すため、製造コストが割高となって
おり、また、固定子の材質硬度を高くする必要があり、
摺動体としてのポリアミドイミド材のメリットが生かさ
れなかった。自己潤滑性を有する本発明の材料を用いる
ことにより、シート状の素材から抜打ち加工が可能とな
っ、だので、コスト低減ができると共に、固定子の材料
に軟質材を用いることができ、耐久性が一層改善される
と共に電磁モータとの価格競争力が増した。以下に図面
を参照しながら本発明の構成およびその効果につき説明
する。In addition, durability has been improved by using a sliding body made of graphite-containing polyamide-imide resin, which has high wear resistance, but in order to make the resin into a slider shape, it is necessary to cut the resin into a ring shape from an injection product, which increases the manufacturing cost. is relatively expensive, and it is necessary to increase the hardness of the stator material.
The advantages of polyamide-imide material as a sliding body were not utilized. By using the material of the present invention, which has self-lubricating properties, it is possible to perform punching from a sheet-like material, which reduces costs, and allows the use of soft materials for the stator, which increases durability. This has further improved the motor's performance and made it more price competitive with electromagnetic motors. The configuration of the present invention and its effects will be explained below with reference to the drawings.
く本発明の構成およびその効果〉
第１図は、本発明の１実施例を示す超音波モータの斜視
図である。Configuration and Effects of the Present Invention> FIG. 1 is a perspective view of an ultrasonic motor showing one embodiment of the present invention.
４は固定子で、弾性体４ａに分極処理した圧電体４ｂが
固着された構成となっており、圧電体４ｂに２つ以上の
位相の異なる高周波電圧（電気系統図は図示せず）を印
加すると屈曲振動によって弾性進行波が発生する。Reference numeral 4 denotes a stator, which has a configuration in which a polarized piezoelectric body 4b is fixed to an elastic body 4a, and two or more high-frequency voltages with different phases (the electrical system diagram is not shown) are applied to the piezoelectric body 4b. Then, elastic traveling waves are generated by bending vibration.
一方、回転子２は、摺動体２ａが回転子リング２ｂに固
着された構造である。On the other hand, the rotor 2 has a structure in which a sliding body 2a is fixed to a rotor ring 2b.
さて、固定子４の進行波発生面４Ｃは、前記回転子／移
動子２を構成する摺動体２ａと相互に接触しており、か
つ回転子２と一体になっている袖１との固定部３ａの側
面は、軸受９のフランジ部によって押されているので、
固定子４と回転子２は加圧接触状態にある。その結果、
回転子２は、固定子４に発生している弾性進行波によっ
て駆動される。Now, the traveling wave generating surface 4C of the stator 4 is in mutual contact with the sliding body 2a constituting the rotor/mover 2, and is fixed to the sleeve 1 which is integrated with the rotor 2. Since the side surface of 3a is pressed by the flange of the bearing 9,
Stator 4 and rotor 2 are in pressurized contact. the result,
The rotor 2 is driven by elastic traveling waves generated in the stator 4.
本出願人は、従来、摺動体２ａの材料として、厚耗性に
すぐれた、グラファイト入リボリアミドイミド樹脂やポ
リイミド樹脂を用いていた。The present applicant has conventionally used graphite-containing riboriamide-imide resin or polyimide resin, which have excellent wear resistance, as the material for the sliding body 2a.
しかしながら、ポリアミドイミド材は、成型加工性が悪
いため円筒状の素材からリング状に削り出すため、製造
コストが割高になっていた。However, polyamide-imide materials have poor moldability and are machined into a ring shape from a cylindrical material, resulting in relatively high manufacturing costs.
さらに、対摩耗性を高めるため、固定子の材質硬度を高
めたり、硬い材質を用いる必要があった。Furthermore, in order to improve wear resistance, it was necessary to increase the hardness of the stator material or use a hard material.
そこで、本発明に示すように、芳香放ポリエステル樹脂
のシート材を用いてプレス打抜きを行ない、リング状に
加工した。その結果、加工工数が従来に比し減少し、コ
スト低減が行なわれた。Therefore, as shown in the present invention, a sheet material of aroma emitting polyester resin was press-cutted to form a ring shape. As a result, the number of processing steps was reduced compared to the conventional method, and costs were reduced.
また、耐摩耗性および耐久性について言えば、固定子に
軟質材を用いることができ、材料コストが低減できると
共に、従来の寿命に対して改善向上された。Furthermore, in terms of wear resistance and durability, a soft material can be used for the stator, reducing material costs and improving the lifespan compared to conventional ones.
また、本材料にグラファイトやＰＴＦＥ等を含有させる
ことにより、耐摺動性）更に改善できるので、モータ特
性に合わせて適量含有させてもよい。In addition, by incorporating graphite, PTFE, etc. into this material, the sliding resistance can be further improved, so it may be included in an appropriate amount depending on the motor characteristics.
次に、回転子／移動子２に可撓性をもたせその固有振動
数を固定子４の固有振動数よりも大きくすると弾性変形
に伴ない、固定子との接触面積が増えるためその摩擦力
を確実にとらえることができ、安定した回転、ノイズの
減少、および高効率が得られた。Next, if the rotor/scillator 2 is made flexible and its natural frequency is made larger than the natural frequency of the stator 4, the area of contact with the stator increases due to elastic deformation, which reduces the frictional force. It was possible to capture images reliably, with stable rotation, reduced noise, and high efficiency.
本発明は、以上に示した効果を看するきわめて有用な発
明である。The present invention is an extremely useful invention that achieves the above-mentioned effects.
図面は、超音波モータの１実施例を示すもので、第１図
は斜視図、第２図は断面図を示している。
１・・・・・・軸、
２・・・・・・回転子、
２ａ・・・・・・摺動体、
２ｂ・・・・・・回転子リング、
３ａ・・・・・・回転子の軸との固定部、４・・・・・
・固定子、
４ａ・・・・・・弾性体、
４ｂ・・・・・・圧電体、
４Ｃ・・・・・・固定子の進行波発生面、６．９・・・
・・・軸受、
７・・・・・・ケース、
８ ・・・ ・・・ 力 ／り一
特許出願人 新 生 工 業
代表者 指 １）年 生
区＝の分書（占丁こ変更なし）
第１図
第２図
手続補正書（方式）
％式％
１ 事件の表示
特卯昭６１−２０８９７９号
２ 発明の名称
超音波モータの回転子／移動子
３ 補正をする者
π件との関係 特許出願人
所在地 東京都す田谷区粕谷２丁目１番８号昭和６１年
１１月２５日（発送日）
５ 補正の対象
図面
６ 補正の内容
別紙の通り（内容に変更なし）The drawings show one embodiment of an ultrasonic motor, with FIG. 1 showing a perspective view and FIG. 2 showing a sectional view. 1... shaft, 2... rotor, 2a... sliding body, 2b... rotor ring, 3a... rotor Fixed part with shaft, 4...
・Stator, 4a...Elastic body, 4b...Piezoelectric body, 4C...Stator traveling wave generation surface, 6.9...
...Bearing, 7...Case, 8......Force / Riichi Patent Applicant New Industrial Representative Finger 1) Separate book of Birth Ward = (no change) ) Figure 1 Figure 2 Procedural amendment (method) % formula % 1 Indication of the case Tokusho No. 61-208979 2 Name of the invention Rotor/mover of ultrasonic motor 3 Person making the amendment Relationship with the case Patent Applicant Address: 2-1-8 Kasuya, Sutagaya-ku, Tokyo November 25, 1986 (shipment date) 5. Drawing subject to amendment 6. Contents of amendment as per attached sheet (no change in content)
Claims (1)
される圧電体を弾性体に固着した固定子と、その固定子
に加圧接触し、駆動される回転子／移動子から構成され
る超音波モータにおいて、回転子／移動子の固有振動数
が前記固定子の固有振動数よりも大きく、また、回転子
／移動子を構成する摺動体（スライダー）が、芳香放ポ
リエステル樹脂からできており、 回転子リング／移動子バッキングプレートに固着されて
いることを特徴とする超音波モータの回転子／移動子。 ２ 前記回転子／移動子において、回転子／移動子を構
成する回転子リング／移動子バッキングプレートおよび
回転子リング／移動子バッキングプレートに固着した摺
動体が可撓性を有する構造となっていることを特徴とす
る特許請求の範囲第１項記載の超音波モータの回転子／
移動子。[Claims] 1. A stator in which a piezoelectric material excited by two or more high-frequency applied voltages with different phases is fixed to an elastic body, and a rotor/mover that is brought into pressurized contact with the stator and driven. In the ultrasonic motor, the rotor/slider has a natural frequency larger than that of the stator, and the sliding body (slider) constituting the rotor/slider is made of aromatic polyester. A rotor/mover for an ultrasonic motor, characterized in that it is made of resin and is fixed to a rotor ring/mover backing plate. 2. In the rotor/mover, the rotor ring/mover backing plate and the sliding body fixed to the rotor ring/mover backing plate constituting the rotor/mover have a flexible structure. A rotor of an ultrasonic motor according to claim 1, characterized in that:
moving child.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61208979A JPH0744851B2 (en) | 1986-09-05 | 1986-09-05 | Ultrasonic motor rotor / mover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61208979A JPH0744851B2 (en) | 1986-09-05 | 1986-09-05 | Ultrasonic motor rotor / mover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6364582A true JPS6364582A (en) | 1988-03-23 |
| JPH0744851B2 JPH0744851B2 (en) | 1995-05-15 |
Family
ID=16565325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61208979A Expired - Lifetime JPH0744851B2 (en) | 1986-09-05 | 1986-09-05 | Ultrasonic motor rotor / mover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0744851B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5229678A (en) * | 1989-10-20 | 1993-07-20 | Seiko Epson Corporation | Drive control unit for an ultrasonic step motor |
| US5247220A (en) * | 1989-10-20 | 1993-09-21 | Seiko Epson Corporation | Ultrasonic motor |
| US5479380A (en) * | 1989-10-20 | 1995-12-26 | Seiko Epson Corporation | Ultrasonic motor for driving an analog electronic watch |
-
1986
- 1986-09-05 JP JP61208979A patent/JPH0744851B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5229678A (en) * | 1989-10-20 | 1993-07-20 | Seiko Epson Corporation | Drive control unit for an ultrasonic step motor |
| US5247220A (en) * | 1989-10-20 | 1993-09-21 | Seiko Epson Corporation | Ultrasonic motor |
| US5479380A (en) * | 1989-10-20 | 1995-12-26 | Seiko Epson Corporation | Ultrasonic motor for driving an analog electronic watch |
| US5521455A (en) * | 1989-10-20 | 1996-05-28 | Seiko Epson Corporation | Ultrasonic motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0744851B2 (en) | 1995-05-15 |
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