Locking device, gimbal mechanism, and telescope device

A locking device in a gimbal mechanism including a first holder to hold a driven object, a second holder to hold the first holder so as to be rotatable around a first rotation axis, and a fixed member to hold the second holder so as to be rotatable around a second rotation axis that exists on a plane on which the first rotation axis exists and is orthogonal to the first rotation axis, the locking device locking the first holder so as not to be moved with respect to the fixed member or allowing the first holder to be moved with respect to the fixed member, the locking device comprising:

• a driven object side presser to press the first holder from a side where the driven object exists;
• a force transmitter having a portion penetrating the first holder and to convert a tensile force pulled toward a side where the fixed member exists to a pressing force with which the driven object side presser presses the first holder, and to transmit the pressing force to the driven object side presser;
• a fixed member side presser to press the first holder from the side where the fixed member exists;
• a support disposed between the force transmitter and the fixed member side presser when viewed from a vertical direction that is a direction perpendicular to the first rotation axis and the second rotation axis, the support being fixed to the fixed member;
• a link connected to each of the force transmitter rotatably, the support, and the fixed member side presser, to move the fixed member side presser in a direction approaching the first holder when the force transmitter is moved in a direction away from the first holder, and to move the fixed member side presser in a direction away from the first holder when the force transmitter is moved in a direction approaching the first holder;
• and
• a locking force generator to generate the tensile force, and to lock the first holder, sandwiched between the driven object side presser and the fixed member side presser, so as not to be moved with respect to the fixed member.