Abstract: A rotary operation type switch includes a holder, a rotary control, a shaft, a press-fitting portion, an outer wall part, and a stopper. The holder is provided in a state of immobility in the rotational direction. The rotary control rotates relatively with respect to the holder when a rotational force is imparted. The shaft transmits the rotational force imparted to the rotary control. The press-fitting portion is provided to The rotary control, and an end of the shaft is inserted into it. The outer wall part is provided along a direction perpendicular to the rotational direction of the rotary control. The stopper is provided to the holder, and comes into contact with the outer wall part and restricts the limit position of the rotation range when the rotary control and the shaft rotate relatively with respect to the holder.

Abstract: A viewfinder fixing device comprises a holder, a ring, a washer, a dowel, and a plurality of inner peripheral concave-convex portions. The holder has a male thread portion. The ring has a female thread portion that meshes with the male thread portion. The washer is provided between the holder and the ring. The dowel is provided to the washer. The inner peripheral concave-convex portions are provided in the peripheral direction to the ring, and when the ring is turned, the male thread portion and the inner peripheral concave-convex portions cause the holder and the ring to move closer together, which is accompanied by the washer and the ring moving closer together, and the inner peripheral concave-convex portions come into contact with the dowel when the washer and the ring have moved closer together up to a specific distance.

Abstract: A rotary operation type switch includes a holder, a rotary control, a shaft, a press-fitting portion, an outer wall part, and a stopper. The holder is provided in a state of immobility in the rotational direction. The rotary control rotates relatively with respect to the holder when a rotational force is imparted. The shaft transmits the rotational force imparted to the rotary control. The press-fitting portion is provided to The rotary control, and an end of the shaft is inserted into it. The outer wall part is provided along a direction perpendicular to the rotational direction of the rotary control. The stopper is provided to the holder, and comes into contact with the outer wall part and restricts the limit position of the rotation range when the rotary control and the shaft rotate relatively with respect to the holder.

Abstract: A viewfinder fixing device comprises a holder, a ring, a washer, a dowel, and a plurality of inner peripheral concave-convex portions. The holder has a male thread portion. The ring has a female thread portion that meshes with the male thread portion. The washer is provided between the holder and the ring. The dowel is provided to the washer. The inner peripheral concave-convex portions are provided in the peripheral direction to the ring, and when the ring is turned, the male thread portion and the inner peripheral concave-convex portions cause the holder and the ring to move closer together, which is accompanied by the washer and the ring moving closer together, and the inner peripheral concave-convex portions come into contact with the dowel when the washer and the ring have moved closer together up to a specific distance.

Abstract: A battery mounting mechanism includes a terminal connector, a first stopper, a second stopper, and a release button. The first stopper is disposed movably in the Z axis direction with respect to the terminal connector. The second stopper is disposed on the opposite side of the terminal connector with respect to the first stopper, and is disposed movably in the Z axis direction with respect to the terminal connector. The release button is arranged to release the restriction of the first battery or the restriction of the second battery by the first stopper, and arranged to drive the first stopper and the second stopper in the Z axis direction with respect to the terminal connector.

Abstract: The imaging device includes a first optical system, a second optical system, a first support frame, a second support frame, a frame member, and a support member. The first support frame has a first contact portion and supports the first optical system. The second support frame supports the second optical system. The first and second support frames on the frame member are mounted, and this frame member comes into contact with the first contact portion at three or more points. The support member couples the first support frame to the frame member in a state in which the first receiver comes into contact with the first contact portion. The points of contact between the first contact portion and the first receiver are disposed on an imaginary spherical plane.

Abstract: A battery mounting mechanism includes a terminal connector, a first stopper, a second stopper, and a release button. The first stopper is disposed movably in the Z axis direction with respect to the terminal connector. The second stopper is disposed on the opposite side of the terminal connector with respect to the first stopper, and is disposed movably in the Z axis direction with respect to the terminal connector. The release button is arranged to release the restriction of the first battery or the restriction of the second battery by the first stopper, and arranged to drive the first stopper and the second stopper in the Z axis direction with respect to the terminal connector.