JPH038306U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing an embodiment of the present invention, Fig. 2 is an exploded perspective view of the main parts of an embodiment of the invention, shifted in the axial direction, and Fig. 3 is a longitudinal sectional view showing the prior art. , FIG. 4 is a diagram showing the relationship between a member related to refocusing and a driving member, FIG. 5 a is a perspective view of a torsion spring, FIG. Fig. 6c shows the position of the hook of the torsion spring in normal use; Fig. 6a shows the positional relationship between the two engaging limit pins and the direction of the biasing force of the torsion spring;
FIG. b is a diagram illustrating the rotational direction of the coarse movement handle support member during refocusing. Explanation of symbols of main parts, 20a, 20b... Rotating ring, 21... Rotating ring restriction pin, 21b
...Following rotation ring connecting pin, 22... Support member, 24... Refocus setting member, 25... Friction ring rotation prevention pin, 26a, 26b, 26c... Friction ring.

Claims (1)

[Claims for Utility Model Registration] A focusing handle is fixed to an end of a focusing rotation shaft provided on the main body of the device, and a portion for engaging with the handle is provided between the handle and the main body. a rotating member that rotates following the rotation of the handle and is movable in the axial direction of the rotating shaft;
provided between the handle and the rotating member,
In the refocusing device, the refocusing device includes a pressing member that moves the rotating member in the axial direction of the rotating shaft and presses and fixes the rotating member to the main body when refocusing is set, wherein the rotating member is composed of at least two rotating plates. A refocusing device characterized in that a friction plate movable only in the axial direction of the focusing rotation axis is provided between the rotary plate.