JP2016082802A5

JP2016082802A5 -

Info

Publication number: JP2016082802A5
Application number: JP2014214337A
Authority: JP
Filing date: 2014-10-21
Publication date: 2017-11-30
Anticipated expiration: 2034-10-21

Description

振動子と、振動子と接触する摩擦部材と、摩擦部材を固定するベース部材と、を備える振動波モータと、振動波モータを保持するモータ保持部材と、ベース部材とモータ保持部材との間及び摩擦部材とモータ保持部材との間で押圧されて挟持される振動吸収部材と、を備え、ベース部材とモータ保持部材との間における振動吸収部材の幅の変形量と、摩擦部材とモータ保持部材との間における前記振動吸収部材の幅の変形量とは異なることを特徴としている。 And Doko vibration, a friction member in contact with the vibrator, and a base member for fixing the friction member, a vibration wave motor and a motor holding member for holding the oscillation Doha motor, the base member and the motor retaining member and the amount of deformation of the width of the vibration absorbing member between the pressed and a vibration absorbing member is held by the base member and the motor retaining member and between the friction member and the motor retaining member, and the friction member It is characterized in that it differs from the deformation amount of the width of the vibration absorbing member between the motor holding member and the motor holding member.

振動吸収部材１２８が組み込まれた際、超音波モータ１００とモータ保持部材１２０とによって振動吸収部材１２８は押圧されて挟持され、それにより変形を生じる。また、振動吸収部材１２８は摩擦部材１０４とも接触することになり、摩擦部材１０４とモータ保持部材１２０とによっても振動吸収部材１２８は押圧されて挟持され、それにより変形を生じる。これによって超音波モータ１００のユニットに生じる振動と、摩擦部材１０４に生じる振動が振動吸収部材１２８によって抑制される。すなわち、高周波電圧の印加により振動する振動子２００の影響による不要な振動を低減することが可能となる。このことを以下に詳述する。 When the vibration absorbing member 128 is assembled, the vibration absorbing member 128 is pressed and sandwiched by the ultrasonic motor 100 and the motor holding member 120, thereby causing deformation. Further, the vibration absorbing member 128 also comes into contact with the friction member 104, and the vibration absorbing member 128 is pressed and sandwiched by the friction member 104 and the motor holding member 120, thereby causing deformation. Accordingly, vibration generated in the unit of the ultrasonic motor 100 and vibration generated in the friction member 104 are suppressed by the vibration absorbing member 128. That is, it is possible to reduce unnecessary vibration due to the influence of the vibrator 200 that vibrates by application of a high-frequency voltage. This will be described in detail below.

上記のように、摩擦部材１０４とベース部材１１７との間に生じる隙間１３１を塞ぐように振動吸収部材１２８を配置して組み込む。それにより、振動子２００と摩擦部材１０４との摩擦によって生じる摩耗粉が光学レンズ１２２に到達すること及び付着することを防止でき、ゴミ対策を可能としている。

As described above, the vibration absorbing member 128 is arranged and incorporated so as to close the gap 131 generated between the friction member 104 and the base member 117. Thereby, it is possible to prevent wear powder generated by the friction between the vibrator 200 and the friction member 104 from reaching and adhering to the optical lens 122 and to take measures against dust.

Claims

And Doko vibration,
A friction member in contact with the vibrator;
A base member for fixing the front Symbol friction member, a vibration wave motor comprising,
A motor holding member for holding the pre-Symbol vibration wave motor,
A vibration absorbing member that is pressed and clamped between the base member and the motor holding member and between the friction member and the motor holding member;
With
The deformation amount of the width of the vibration absorbing member between the base member and the motor holding member is different from the deformation amount of the width of the vibration absorbing member between the friction member and the motor holding member. A drive device.

The drive device according to claim 1, wherein the vibration absorbing member is disposed so as to close a gap between the friction member and the base member of the vibration wave motor.

The drive device according to claim 2, wherein the vibration absorbing member includes an adhesive portion on a surface that contacts the base member, and at least a part of the adhesive portion is exposed in the gap. Drive device.

4. The drive device according to claim 1, wherein a deformation amount of a width of the vibration absorbing member between the base member and the motor holding member is between the friction member and the motor holding member. 5. A drive device characterized by being smaller than the deformation amount of the width of the vibration absorbing member in between.

5. The drive device according to claim 4, wherein a contact surface of the friction member that contacts the vibration absorbing member is closer to the motor holding member than a contact surface of the base member that contacts the vibration absorbing member. A drive device characterized by protruding.

6. The driving apparatus according to claim 1, wherein the vibration wave motor is an ultrasonic motor.

A driving device according to any one of claims 1 to 6,
A lens device comprising: a lens holding member that holds a lens and is driven by the driving device.