JP2016174534A5

JP2016174534A5 - Motor, lens barrel and optical equipment

Info

Publication number: JP2016174534A5
Application number: JP2016135727A
Authority: JP
Filing date: 2016-07-08
Publication date: 2017-02-09
Anticipated expiration: 2033-12-27

Description

本発明は、レンズ鏡筒及び光学機器などに適用されるモータに関する。 The present invention relates to motors which are applied to a lens barrel and optical instruments.

従来、この種のモータ（振動波モータ）は、高周波電圧の印加により周期的に振動する振動子を摺動部材に圧接することで摺動部材を駆動していた。 Conventionally, this type of motor ( vibration wave motor ) drives the sliding member by pressing a vibrator that periodically vibrates by application of a high-frequency voltage to the sliding member.

上記目的を達成するために本発明は、印加される電圧により振動する振動子と、該振動子と摩擦接触する第１の部材と、前記振動子を前記第１の部材に対して加圧する加圧手段と、前記振動子が固定される第２の部材と、該第２の部材を保持する第３の部材と、前記第２の部材と前記第３の部材とを連結する連結手段を有し、前記振動子が振動することにより前記振動子と前記第１の部材が相対的に移動するモータであって、
前記連結手段は、転動することで前記第２の部材を前記第３の部材に対し前記加圧手段の加圧方向に移動自在とする転動部材と、該転動部材を前記加圧手段の加圧方向に直交する方向に付勢する付勢部材とを備えていることを特徴とする。
To accomplish the above object, a vibrator for vibration by the applied voltage, and the first member in frictional contact with the vibrator, pressurizing said transducer relative to said first member and pressurizing means for pressurizing, and a second member to which the vibrator is fixed, said third member and said second member and the third connecting means for connecting the member for holding the second member the a, the first member and the transducer is a motors that move relative by the vibrator vibrates,
Said connecting means includes a rolling member for freely moving the second member in the pressing direction of the pressing means relative to said third member by rolling, the pressurizing means the rolling member characterized Tei Rukoto a biasing member for biasing in a direction perpendicular to the pressing direction of the.

Claims

A vibrator which vibrated by an applied voltage, and the first member in frictional contact with the vibrator, and a pressurizing means for pressurizing said transducer relative to said first member, said vibrator fixed a second member which is a third member for holding the second member, a connecting means for connecting the second and the member the third member, said vibrator vibrates the first member and the transducer is a motors for relative movement by,
The connecting means rolls to make the second member movable in the pressurizing direction of the pressurizing means relative to the third member by rolling, and the rolling member to the pressurizing means motor, characterized in that a biasing member for biasing in a direction perpendicular to the pressing direction of the.

Before SL coupling means, the first three of the members includes an extending portion that extends in the pressing direction, the rolling member is formed a space between the second member and the extending portion The motor according to claim 1, wherein the motor is disposed on the surface.

Before SL biasing member, the contact with the second member, the motor according to claim 2 wherein the rolling member is characterized by being sandwiched between the extended portion and the biasing member .

The biasing force of the pre-Symbol urging member may be not greater than the inertial force applied to the second member or the third member when the vibrator moves said oscillator by oscillating The motor according to any one of claims 1 to 3 .

Before SL rolling member, the vibrator so narrow useless in a relative moving direction of the first member and the transducer, either of claims 1 to 4, characterized in that provided in the two The motor according to claim 1 .

A vibrator that vibrates by an applied voltage, a first member that is in frictional contact with the vibrator, a pressurizing unit that pressurizes the vibrator against the first member, and the vibrator are fixed. A second member; a third member that holds the second member; and a connecting unit that connects the second member and the third member. A motor in which the vibrator and the first member move relatively,
The connecting means includes a first rolling member and a second rolling member that make the second member movable in the pressurizing direction of the pressurizing means with respect to the third member; A motor comprising: a biasing member that biases one of the rolling member and the second rolling member in a direction orthogonal to the pressurizing direction of the pressurizing unit.

The motor according to claim 6, wherein the first rolling member and the second rolling member are disposed at a position between the second member and the third member.

The vibrator is arranged at a position between the first rolling member and the second rolling member in a relative movement direction of the vibrator and the first member. The motor according to claim 6 or 7.

Before SL biasing member, a motor according to any one of claims 1 to 8, characterized in that a leaf spring.

Motor according to any one of claims 1 to 9 before Symbol rolling member characterized in that it is a cylindrical roller.

The motor according to claim 1, wherein the second member is not in contact with the pressurizing unit.

The motor according to claim 1, wherein the vibrator vibrates ultrasonically with a high-frequency driving voltage.

A lens barrel comprising a lens holding member that can be moved by the motor according to claim 1.

An optical apparatus in which the motor according to any one of claims 1 to 12 is incorporated.