JPH0178909U

JPH0178909U -

Info

Publication number: JPH0178909U
Application number: JP1987175065U
Authority: JP
Priority date: 1987-11-18
Filing date: 1987-11-18
Publication date: 1989-05-26
Anticipated expiration: 2002-11-18
Also published as: JPH0628644Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示すものでセオド
ライトの望遠鏡の水平軸の粗微動装置の縦断面図
、第２図はその要部分解斜視図、第３図は第１図
に示す線−に沿う断面図、第４図ａ，ｂは粗
動または微動状態のアウタレースの断面図、第５
図は従来の微動調整機構の組付けられたセオドラ
イトの側面図、第６図は従来の微動調整機構の断
面図である。２３……筐体、２４……水平軸、２５……固定
環、３０……スパイラルカム、３２……押圧バネ
部材、４０……固定軸、４２……固定ツマミ、５
０……固定ジヨイント、６０……軸ケーシング、
７０……インナレース、７３……ボール収納孔、
７３ａ……ボール、７４……粗微動軸、７６……
アウタレース、７６ａ……円筒半割形状突出部、
８０……粗微動ツマミ、８２……ピン、１００…
…軸固定機構、２００……粗微動調整機構。 Fig. 1 shows an embodiment of the present invention; Fig. 2 is a longitudinal cross-sectional view of a coarse and fine movement device for the horizontal axis of a theodolite telescope; Fig. 2 is an exploded perspective view of its essential parts; and Fig. 3 shows the lines shown in Fig. 1. Figure 4 a and b are cross-sectional views of the outer race in coarse or fine movement, Figure 5
The figure is a side view of a theodolite equipped with a conventional fine adjustment mechanism, and FIG. 6 is a sectional view of the conventional fine adjustment mechanism. 23...Housing, 24...Horizontal axis, 25...Fixed ring, 30...Spiral cam, 32...Press spring member, 40...Fixed shaft, 42...Fixed knob, 5
0...Fixed joint, 60...Shaft casing,
70...Inner lace, 73...Ball storage hole,
73a...Ball, 74...Coarse and fine movement axis, 76...
Outer race, 76a...cylindrical half-shaped protrusion,
80... Coarse/fine movement knob, 82... Pin, 100...
...Axis fixing mechanism, 200...Coarse and fine adjustment mechanism.

Claims

[Scope of claim for utility model registration] A pivot shaft that pivots the collimating telescope horizontally or vertically, and a shaft casing that is attached and fixed to a surveying instrument, with a fixing knob provided at the end. a pivot shaft fixing mechanism having a fixed shaft and rotating the fixed shaft to fix the pivot shaft; It has a coarse and fine movement shaft that is screwed together, and by turning a coarse and fine movement knob provided adjacently and coaxially with the fixed knob, the coarse and fine movement shaft is interlocked, moves forward and backward, and rotates the pivot shaft. A coarse and fine movement adjustment mechanism for sighting of a surveying instrument, comprising: a ball storage part formed on a coarse and fine movement shaft; and a coarse and fine movement knob attached to the fixed shaft. a cylindrical inner race assembled to the ball storage section and disposed inside the ball storage section, and an engagement section disposed outside the ball storage section that engages with the coarse/fine adjustment knob; a cylindrical outer race that is rotatable integrally with the inner race through the shaft; and a ball stored in a ball housing portion of the coarse and fine movement shaft so as to contact both races, and the coarse and fine movement knob and the outer race engagement portion When the knob is in the engaged state, both races and the coarse/fine adjustment shaft rotate together to perform coarse adjustment of the pivot shaft, and when the coarse/fine adjustment knob and the outer race engaging portion are in the disengaged state, the outer race It does not rotate, but is configured so that the rotation of the inner race causes the coarse and fine adjustment shaft to rotate with a certain delay relative to the rotation of the coarse and fine adjustment knob, resulting in fine adjustment of the pivot shaft. Coarse and fine movement device for collimation of surveying instruments.