JPS6359776A - Rotor/moving piece for ultrasonic motor - Google Patents
Rotor/moving piece for ultrasonic motorInfo
- Publication number
- JPS6359776A JPS6359776A JP61200769A JP20076986A JPS6359776A JP S6359776 A JPS6359776 A JP S6359776A JP 61200769 A JP61200769 A JP 61200769A JP 20076986 A JP20076986 A JP 20076986A JP S6359776 A JPS6359776 A JP S6359776A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- mover
- sliding body
- ultrasonic motor
- stator
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000004962 Polyamide-imide Substances 0.000 claims abstract description 8
- 229920002312 polyamide-imide Polymers 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 8
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 5
- 125000003118 aryl group Chemical group 0.000 claims abstract description 4
- 239000004760 aramid Substances 0.000 claims abstract 3
- 239000013013 elastic material Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910002804 graphite Inorganic materials 0.000 abstract description 4
- 239000010439 graphite Substances 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000004080 punching Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 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
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〈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。What are the sliding bodies that make up the conventional rotor/mover?
高摩擦係数の弾性体（ウレタン系樹脂）からできていた
が、数１００時間の運転後には、摺動体に固定子の摩耗
粉が付着し、件部が低下した。Although it was made of an elastic material (urethane resin) with a high coefficient of friction, after several hundred hours of operation, wear powder from the stator adhered to the sliding member, causing the surface area to deteriorate.
また、＃摩耗性の高いグラファイト入りボリアミドイミ
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、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。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使となったので、コ
スト低減ができ、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できた。以下に図面を参照しなが
ら本発明に係る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 abrasion resistance, but in order to make the resin into a slider shape, the manufacturing cost is high because the resin is cut into a ring shape from an injection product. It was relatively expensive, and the advantages of polyamide-imide material as a sliding body were not utilized. By using the material of the present invention,
Since it is now possible to punch out sheet-shaped materials, costs can be reduced, durability has been further improved, and price competitiveness with electromagnetic motors has been achieved. The configuration and effects of the present invention will be described 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。Structure of the present invention and its effects> FIG. 1 shows one embodiment of the invention.
超音波モータの固定子４は、弾性体４ａに分極処理した
圧電体４ｂが固着された構造で、圧電体４ｂに高周波電
圧（電気系統図は図示せず）を印加すると固定子４には
屈曲振動によって進行波が発生する。The stator 4 of the ultrasonic motor has a structure in which a polarized piezoelectric material 4b is fixed to an elastic material 4a, and when a high frequency voltage (electrical system diagram not shown) is applied to the piezoelectric material 4b, the stator 4 bends. Vibrations generate traveling waves.
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。The rotor 2 has a structure in which a sliding body 2a is fixed to a rotor ring 2b.
固定子４の進行波発生面４Ｃは、摺動体２ａと相互接触
しており、かつ回転子２の軸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、進行波を受けて回転する。The traveling wave generating surface 4C of the stator 4 is in mutual contact with the sliding body 2a, and the side surface of the fixed part 3a to the shaft 1 of the rotor 2 is pressed by the flange part of the bearing 9, so that it is not fixed. The child 4 and the rotor 2 are in pressurized contact. As a result, the rotor 2 receives the traveling waves and rotates.
摺動体２ａの材料として、本出願人は、従来耐摩耗性に
すぐれた、グラファイト入リボリアミドイミド樹脂やポ
リイミド樹脂を摺動体に用いていた。As the material for the sliding body 2a, the present applicant has conventionally used graphite-containing riboriamide-imide resin or polyimide resin, which have excellent wear resistance.
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
コストが割高であった。However, polyamide-imide materials have poor moldability and are machined into a ring shape from a cylindrical material, resulting in relatively high manufacturing costs.
そこで、本発明に示すように、アラミド繊維のシート材
に芳香族ポリアミドイミドを含浸させた材料を用いてプ
レス打抜きにより、リング状に加工することにより、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, by processing aramid fiber sheet material impregnated with aromatic polyamideimide into a ring shape by press punching, the number of processing steps is reduced compared to the conventional method, and the cost is reduced. A reduction was made.
また、耐摩耗性および耐久性についても従来の材料例え
ば、ポリイミド系に対して特に高ＰＶ値、高温下で改善
がなされている。Furthermore, the abrasion resistance and durability have been improved compared to conventional materials such as polyimide, especially at high PV values and high temperatures.
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、耐摺動性を改善できるので、モータ特性に
合わせて適量含有させてもよい。Furthermore, by incorporating graphite, PTFE, etc. into this material, the sliding resistance can be improved, so it may be included in an appropriate amount depending on the motor characteristics.
次に、回転子／移動子に可撓性をもたせると変形に伴な
い、固定子との接触面積が増えるためその摩擦力により
、安定した回転および高効率が得られる。Next, when the rotor/mover is made flexible, its contact area with the stator increases as it deforms, and its frictional force provides stable rotation and high efficiency.
また、本材料によって、回転子／移動子を作ってもよい
、その場合には、回転子／移動子が摺動体としての機能
も有するため、摺動体を回転子に固着する工程および加
工工数の削減が可能となり、コスト低減を行なうことが
できる。In addition, a rotor/sliver may be made using this material. In that case, the rotor/sliver also functions as a sliding body, so the process of fixing the sliding body to the rotor and the processing man-hours are reduced. This makes it possible to reduce costs.
本発明は、以−ヒに示した効果を有するきわめて有用な
発明である。The present invention is an extremely useful invention having the effects shown below.
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。
ｌ・・・・・・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・・・・・・カバー
図面の浄書（内容に変更なし）
第１図
第２図
手続補正書（方式）
昭和６１年１１月ぐ日The drawings show one embodiment of an ultrasonic motor, with FIG. 1 showing a perspective view and FIG. 2 showing a sectional view. l... 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...imprint of cover drawing (no change in content) Figure 1 Figure 2 Procedural amendment (method) November 1988
Claims (1)
いる固定子（弾性体に圧電体を固着）の表面に加圧接触
し、回転もしくは移動する回転子／移動子において、 回転子／移動子を構成する摺動体（スライ ダー）が、アラミド繊維に芳香族，ポリアミドイミドを
含浸させた樹脂材から構成されており、 その摺動体が、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。 ３ 前記回転子／移動子において、回転子／移動子の材
質が、アラミド繊維に芳香族ポリアミドイミドを含浸さ
せた樹脂材から構成されており、かつ、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 rotor that rotates or moves while being in pressure contact with the surface of a stator (a piezoelectric material is fixed to an elastic material) that generates an elastic wave (bending wave) that is a combination of transverse waves and longitudinal waves. / In the rotor/mover, the sliding body (slider) that constitutes the rotor/mover is made of a resin material in which aramid fibers are impregnated with aromatics and polyamideimide. A rotor/mover for an ultrasonic motor, characterized in that it is fixed to a child 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. 3. In the rotor/mover, the rotor/mover is made of a resin material made of aramid fibers impregnated with aromatic polyamide-imide, and has a flexible structure. Claim 1 characterized by
Rotor/scillator of the ultrasonic motor described in Section 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61200769A JPS6359776A (en) | 1986-08-27 | 1986-08-27 | Rotor/moving piece for ultrasonic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61200769A JPS6359776A (en) | 1986-08-27 | 1986-08-27 | Rotor/moving piece for ultrasonic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6359776A true JPS6359776A (en) | 1988-03-15 |
Family
ID=16429867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61200769A Pending JPS6359776A (en) | 1986-08-27 | 1986-08-27 | Rotor/moving piece for ultrasonic motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6359776A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5352950A (en) * | 1990-03-30 | 1994-10-04 | Canon Kabushiki Kaisha | Vibration wave driven motor |
| US5990597A (en) * | 1989-02-10 | 1999-11-23 | Nikon Corporation | Ultrasonic motor having high drive efficiency |
-
1986
- 1986-08-27 JP JP61200769A patent/JPS6359776A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5990597A (en) * | 1989-02-10 | 1999-11-23 | Nikon Corporation | Ultrasonic motor having high drive efficiency |
| US5352950A (en) * | 1990-03-30 | 1994-10-04 | Canon Kabushiki Kaisha | Vibration wave driven motor |
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