JPH0485316U - - Google Patents
Info
- Publication number
- JPH0485316U JPH0485316U JP12806490U JP12806490U JPH0485316U JP H0485316 U JPH0485316 U JP H0485316U JP 12806490 U JP12806490 U JP 12806490U JP 12806490 U JP12806490 U JP 12806490U JP H0485316 U JPH0485316 U JP H0485316U
- Authority
- JP
- Japan
- Prior art keywords
- retainer
- fixed outer
- focusing knob
- focusing
- elongated hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Lens Barrels (AREA)
Description
第１図は望遠鏡の粗微動機構組付部の縦断面図
、第２図は第１図に示す線−に沿う断面図、
第３図は第１図に示す線−に沿う断面図、第
４図は従来の粗微動機構を一部破断して示す斜視
図である。
１０……視準用望遠鏡のケーシング、１４……
固定外筒、１６……レンズ枠、１７……合焦レン
ズ、１８……ガイドピン、１９……軸方向に延び
る長孔、２０……合焦つまみ、２２……円周方向
に延びる長孔、３０……ラジアル玉軸受、３２…
…アウターレース、３４……インナーレース、３
６……リテーナ、３６ａ……リテーナ延出筒部、
３７……ストツパピン、３８……鋼球。
Fig. 1 is a longitudinal sectional view of the coarse and fine movement mechanism assembly part of the telescope, Fig. 2 is a sectional view taken along the line - shown in Fig. 1,
FIG. 3 is a sectional view taken along the line - shown in FIG. 1, and FIG. 4 is a partially cutaway perspective view of the conventional coarse and fine movement mechanism. 10... Casing of sighting telescope, 14...
Fixed outer cylinder, 16... Lens frame, 17... Focusing lens, 18... Guide pin, 19... Elongated hole extending in the axial direction, 20... Focusing knob, 22... Elongated hole extending in the circumferential direction , 30... radial ball bearing, 32...
...Outer lace, 34...Inner lace, 3
6... Retainer, 36a... Retainer extension cylinder part,
37...Stotsupapin, 38...Steel ball.
Claims (1)
可能な合焦つまみと、 合焦レンズを一体に保持するとともに、固定外
筒内を前後に移動できるレンズ枠と、固定外筒と
前記合焦つまみとの間に介装され、リテーナが固
定外筒に沿つて延出した構造で、合焦つまみの回
動を固定外筒に減速伝達するラジアル玉軸受と、 前記リテーナの延出筒部と前記合焦つまみとの
対向面の一方の側に形成された円周方向に延びる
長孔と、前記長孔に係合する他方の側に形成され
たストツパピンとからなり、ストツパピンが長孔
の長手方向周縁部に当接しない状態では、ラジア
ル玉軸受が合焦つまみの回動に対しリテーナを減
速回動し、ストツパピンが長孔の長手方向の周縁
部に当接した状態では、合焦つまみと一体にリテ
ーナを回動する粗微動切替手段と、 前記レンズ枠に突設され、固定外筒に形成され
た前後に延びる長孔を貫通して、前記リテーナの
延出筒部内周面に形成された螺旋リード溝と係合
するガイドピンと、を備えたことを特徴とする合
焦レンズ粗微動機構。 (2) 前記ラジアル玉軸受は、合焦つまみに設け
られたアウターレースと、前記固定外筒に回動自
在に外嵌されたインナーレースと、前記両レース
間に介在された鋼球と、前記鋼球を両レース間に
保持するリテーナとからなることを特徴とする請
求項(1)記載の合焦レンズ粗微動機構。[Scope of Claim for Utility Model Registration] (1) A focusing knob that is fitted onto the fixed outer cylinder and is rotatable around the fixed outer cylinder, and a focusing lens that is integrally held and rotated back and forth within the fixed outer cylinder. The retainer is interposed between a movable lens frame, a fixed outer barrel, and the focusing knob, and a retainer extends along the fixed outer barrel, and transmits the rotation of the focusing knob to the fixed outer barrel at a reduced speed. a radial ball bearing; an elongated hole extending in the circumferential direction formed on one side of a surface facing the extending cylindrical portion of the retainer and the focusing knob; and an elongated hole formed on the other side that engages with the elongated hole. When the stopper pin does not contact the longitudinal edge of the elongated hole, the radial ball bearing decelerates and rotates the retainer with respect to the rotation of the focusing knob, and the stopper pin rotates at a reduced speed in response to the rotation of the focusing knob. When in contact with the peripheral edge, a coarse/fine movement switching means rotates the retainer together with the focusing knob; A focusing lens coarse and fine movement mechanism comprising: a guide pin that engages with a spiral lead groove formed on the inner circumferential surface of the extending cylindrical portion of the retainer. (2) The radial ball bearing includes an outer race provided on the focusing knob, an inner race rotatably fitted onto the fixed outer cylinder, a steel ball interposed between both the races, and a steel ball interposed between the two races. 2. The focusing lens coarse and fine movement mechanism according to claim 1, further comprising a retainer that holds a steel ball between both races.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12806490U JP2531368Y2 (en) | 1990-11-30 | 1990-11-30 | Focusing lens coarse / fine movement mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12806490U JP2531368Y2 (en) | 1990-11-30 | 1990-11-30 | Focusing lens coarse / fine movement mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0485316U true JPH0485316U (en) | 1992-07-24 |
| JP2531368Y2 JP2531368Y2 (en) | 1997-04-02 |
Family
ID=31875541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12806490U Expired - Lifetime JP2531368Y2 (en) | 1990-11-30 | 1990-11-30 | Focusing lens coarse / fine movement mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2531368Y2 (en) |
-
1990
- 1990-11-30 JP JP12806490U patent/JP2531368Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2531368Y2 (en) | 1997-04-02 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |