JPS5831127Y2 - microscope revolver - Google Patents

Description

【考案の詳細な説明】 本考案は、顕微鏡のレボルバ−の改良に関するものであ
る。[Detailed Description of the Invention] The present invention relates to an improvement of a revolver for a microscope.

従来の顕微鏡のレボルバ−は、第１図に示した如く、顕
微鏡の鏡筒１に固定される固定側部材２と、固定側部材
２に複数個のスチールボール３を介して回動可能に装架
されているど共に□対物レンズ装着用孔４ａを有する回
動側部材４と、回動側部材４の内壁の中心部に形成され
た円錐形凹陥部４ｂと固定側部材２の中心部に螺着され
た押えネジ５の先端面に形成された円錐形凹陥部５ａと
の間に挟持されたスチールボール６とから構成されてい
て、所要時にスチールボール６を回転中心として回動部
材４を回動せしめて成るものであった。As shown in FIG. 1, a conventional revolver for a microscope includes a fixed member 2 fixed to a lens barrel 1 of a microscope, and a plurality of steel balls 3 mounted on the fixed member 2 so as to be rotatable. A rotating side member 4 having a hole 4a for attaching an objective lens on both sides, a conical recess 4b formed in the center of the inner wall of the rotating side member 4, and a center part of the fixed side member 2. It consists of a steel ball 6 held between a conical concave portion 5a formed on the tip end surface of a screw 5, and a steel ball 6 that rotates around the steel ball 6 when necessary. It was made to rotate.

ところが、スチールボール３と接触している固定側部材
２の摺動面２ａ及び回動側部材４の摺動面４Ｃはいずれ
もスチールボール３よりも軟く而も上記構造から明らが
なようにスチールボール３と面摺動面２ａ及び４Ｃとの
接触が点接触であるため、使用中に面摺動面２ａ及び４
Ｃが摩耗してしまい、その結果ガタが生じてしまうとい
う問題があった。However, the sliding surface 2a of the fixed side member 2 and the sliding surface 4C of the rotating side member 4 that are in contact with the steel ball 3 are both softer than the steel ball 3, which is not clear from the above structure. Since the contact between the steel ball 3 and the sliding surfaces 2a and 4C is a point contact, the sliding surfaces 2a and 4C contact each other during use.
There was a problem in that C was worn out, resulting in looseness.

又、スチールボール６と接触している回動側部材４の円
錐形凹陥部４ｂの表面及び押えネジ５の円錐形凹陥部５
ａの表面も又同様な理由により使用中に摩耗してしまう
ので、ガタが生じてしまうという問題があった。Also, the surface of the conical recess 4b of the rotating member 4 that is in contact with the steel ball 6 and the conical recess 5 of the cap screw 5
The surface of a is also worn during use for the same reason, resulting in the problem of looseness.

そして、最近の顕微鏡のレボルバ−の回転芯及び対物レ
ンズ取付面の各誤差が夫々１０μ及び３μ以内であるな
ど高精度であることが要求されている現状を考えると、
上記問題点は極めて重大であった。Considering the current situation in which recent microscopes require high precision, with errors in the rotating center of the revolver and the objective lens mounting surface being within 10μ and 3μ, respectively,
The above problems were extremely serious.

本考案は、上記問題点を除去した顕微鏡のレボルバ−を
提供せんとするものであって、以下第２図及び第３図に
示した一実施例に基づきこれを説明する。The present invention aims to provide a microscope revolver that eliminates the above-mentioned problems, and will be explained below based on an embodiment shown in FIGS. 2 and 3.

尚、上記従来例と同一の部材には同一符号を付してその
説明は省略する。Incidentally, the same members as those in the conventional example described above are given the same reference numerals and their explanations will be omitted.

７は第３図に示した如く斜面付外周部７ａと斜面付内周
部７ｂとを有する環状のバネワッシャであって、第２図
に示・、９．シた如く斜面付外周部７ａが凹陥部４ｂに
当接し五つ斜面付内周部７ｂがスチールボール６に当接
すると共に全体が凹陥部４ｂ側に湾曲した状態で凹陥部
４ｂ及びスチールボール６間に介在せしめられており、
これにより回動側部材４のスチールボール６に対する位
置決めをして回転中心精度を保つと共に回動側部材４を
軸方向において外方（第２図において斜右下）へ弾圧し
且つスチールボール６を押えネジ５の凹陥部５ａ側へ弾
圧している。7 is an annular spring washer having an outer peripheral part 7a with a slope and an inner peripheral part 7b with a slope, as shown in FIG. 2, and 9. As shown in the figure, the outer peripheral part 7a with the slope abuts against the concave part 4b, and the inner peripheral part 7b with five slopes abuts the steel ball 6, and the whole part curves toward the concave part 4b between the concave part 4b and the steel ball 6. is mediated by
As a result, the rotating member 4 is positioned relative to the steel ball 6 to maintain rotational center accuracy, and the rotating member 4 is pressed outward in the axial direction (diagonally lower right in FIG. 2), and the steel ball 6 is Pressure is applied to the concave portion 5a of the retaining screw 5.

本考案によるレボルバ−は上述の如く構成されているか
ら、使用中に例□えば固定側部材２の摺動面２ａ及び回
動側部材４の摺動面４Ｃが摩耗してガタが生じ得る状態
になったとしても、バネワッシャ７の弾圧作用即ちバネ
ワッシャ７自身の湾曲の度合を小さくしなから回動側部
材４を軸方向において外方へ押圧移動せしめる作用によ
り直ちにガタが吸収されてしまう。Since the revolver according to the present invention is constructed as described above, during use, for example, the sliding surface 2a of the stationary side member 2 and the sliding surface 4C of the rotating side member 4 may be worn out and play may occur. Even if this occurs, the backlash is immediately absorbed by the elastic action of the spring washer 7, that is, the action of pressing the rotating member 4 outward in the axial direction without reducing the degree of curvature of the spring washer 7 itself.

又、押えネジ５の円錐形凹陥部５ａの表面及びバネワッ
シャ７の斜面付内周部７ｂが摩耗してガタが生じ得る状
態になったとしても、バネワッシャ７の弾圧作用即ちバ
ネワッシャ７自身の湾曲の度合を小さくしながらスチー
ルボール６を凹陥部５ａ側へ押圧移動せしめる作用によ
り直ちにガタが吸収されてしまう。Furthermore, even if the surface of the conical concave portion 5a of the cap screw 5 and the sloped inner circumferential portion 7b of the spring washer 7 are worn and loose, the elastic action of the spring washer 7, that is, the curvature of the spring washer 7 itself The backlash is immediately absorbed by the action of pressing and moving the steel ball 6 toward the concave portion 5a while reducing the degree of movement.

尚、この場合、凹陥部５ａの表面とスチールボール６の
接触及びバネワッシャ７の斜面付内周部７ｂとスチール
ボール６の接触が常に維持され而も各接触面の摩耗状態
も均一なので、回動側部材４の回転中心精度は保持され
る。In this case, the contact between the surface of the concave portion 5a and the steel ball 6 and the contact between the inclined inner circumferential portion 7b of the spring washer 7 and the steel ball 6 are always maintained, and the state of wear on each contact surface is uniform, so that rotation is prevented. The accuracy of the rotation center of the side member 4 is maintained.

かくして、バネワッシャ７の作用により、固定側部材２
と回動側部材４との間に生じ得るガタが常に除去され且
つ回動側部材４の回転中心精度が保持される。Thus, due to the action of the spring washer 7, the fixed side member 2
Any backlash that may occur between the rotary member 4 and the rotary member 4 is always removed, and the accuracy of the center of rotation of the rotary member 4 is maintained.

尚、上記実施例においては、バネワッシャ７を回動側部
材４の円錐形凹陥部４ｂとスチールボール６との間に介
在せしめているが、押えネジ５の円錐形凹陥部５ａとス
チールボール６との間にバネワッシャ７を介在せしめる
ようにしても同様な作用効果が得られる。In the above embodiment, the spring washer 7 is interposed between the conical recess 4b of the rotating member 4 and the steel ball 6, but the spring washer 7 is interposed between the conical recess 5a of the cap screw 5 and the steel ball 6. Similar effects can be obtained by interposing a spring washer 7 between the two.

以上のように、本考案による顕微鏡のレボルバ−は、固
定側部材と回動側部材との間に生じ得るガタが常に除去
され且つ回動側部材の回転中心精度が保持されるように
なっているので、長期にわたって高精度な状態を維持す
ることが出来、耐久性に優れている。As described above, in the microscope revolver according to the present invention, play that may occur between the stationary side member and the rotating side member is always removed, and the accuracy of the center of rotation of the rotating side member is maintained. This allows it to maintain high precision over a long period of time and has excellent durability.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来の顕微鏡のレボルバ−の垂直断面図、第２
図は本考案による顕微鏡のレボルバ−の一実施例の垂直
断面図、第３図は上記実施例中のバネワッシャの拡大垂
直断面図である。 ２・・・・・・固定側部材、２ａ・・・・・・摺動面、
３・・・・・・スチールボール、４・・・・・・回動側
部材、４ｂ・・・・・・円錐形凹陥部、４Ｃ・・・・・
・摺動面、５・・・・・・押えネジ、５ａ・・・・・・
円錐形凹陥部、６・・・・・・スチールボール、７・・
・・・・バネワッシャ、７ａ・・・・・・斜面付外周部
、７ｂ・・・・・・斜面付内周部。Figure 1 is a vertical cross-sectional view of the revolver of a conventional microscope;
The figure is a vertical sectional view of one embodiment of the revolver for a microscope according to the present invention, and FIG. 3 is an enlarged vertical sectional view of the spring washer in the above embodiment. 2...Fixed side member, 2a...Sliding surface,
3...Steel ball, 4...Rotating side member, 4b...Conical recess, 4C...
・Sliding surface, 5... Holding screw, 5a...
Conical recess, 6...Steel ball, 7...
...Spring washer, 7a...Outer peripheral part with slope, 7b...Inner peripheral part with slope.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 固定側部材に回動側部材が回動可能に装架され、前記両
部材の内壁中心部に形成された一対の凹陥部間に挟持さ
れたスチールボール全回転の中心として威る顕微鏡のレ
ボルバ−において、前記凹陥部の一方を円錐形に形成し
、前記凹陥部の他方と前記スチールボールとの間に環状
のバネワッシャを湾曲させた状態で介在せしめたことを
特徴とするレボルバ−A revolver for a microscope in which a rotating member is rotatably mounted on a fixed member, and a steel ball is held between a pair of recesses formed at the center of the inner wall of both members, and serves as the center of full rotation. A revolver characterized in that one of the recesses is formed into a conical shape, and an annular spring washer is interposed in a curved state between the other of the recesses and the steel ball.