JPH1114882A - Lens operation torque adjusting mechanism and lens provided with the mechanism - Google Patents
Lens operation torque adjusting mechanism and lens provided with the mechanismInfo
- Publication number
- JPH1114882A JPH1114882A JP17153397A JP17153397A JPH1114882A JP H1114882 A JPH1114882 A JP H1114882A JP 17153397 A JP17153397 A JP 17153397A JP 17153397 A JP17153397 A JP 17153397A JP H1114882 A JPH1114882 A JP H1114882A
- Authority
- JP
- Japan
- Prior art keywords
- sliding
- lens
- zoom
- adjusting mechanism
- projecting part
- 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.)
- Pending
Links
Landscapes
- Lens Barrels (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術の分野】本発明は、レンズ操作トル
ク調整機構及びそれを備えたレンズ、より詳細には、レ
ンズ操作トルクを容易に調整設定可能なレンズ操作トル
ク調整機構及びそれを備えたレンズに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens operating torque adjusting mechanism and a lens having the same, and more particularly, a lens operating torque adjusting mechanism capable of easily adjusting and setting a lens operating torque and a lens having the same. About.
【０００２】[0002]
【従来の技術】カメラレンズの合焦操作トルクやズーム
操作トルクは、操作が非常に微妙であり合焦の精度や効
率にも大きな影響を与えることから、高い精度で設定さ
れ長期間にわたってこれを一定に保持することが要求さ
れる。一方、カメラレンズは小型、軽量、簡易構造であ
ることが要求されることはもちろんである。さらに、上
述したズーム操作トルクが小さ過ぎるとズームレンズを
装着したカメラを撮影のために斜め上向きや斜め下向き
に設定した場合や、ズームレンズを垂直下方を向けて持
ち運ぶ場合等に、ズーム操作トルクが所定量よりも小さ
くて、ズームレンズのズーム操作環に何ら作動力を加え
ていないにもかかわらずズームレンズの構成部材に作用
する重力によってズーム作動が行われることがある。こ
の誤作動は、焦点距離が変動して次回の迅速な撮影を行
うことを妨げたり、ズームレンズの全長が長くなって先
端部がものに衝突したり水に漬かったりする問題があ
る。2. Description of the Related Art Focusing operation torque and zoom operation torque of a camera lens are very delicate and greatly affect focusing accuracy and efficiency. It must be kept constant. On the other hand, it is needless to say that the camera lens is required to have a small size, a light weight, and a simple structure. Further, if the above-mentioned zoom operation torque is too small, the zoom operation torque may be reduced when the camera equipped with the zoom lens is set obliquely upward or obliquely downward for photographing, or when the zoom lens is carried vertically downward. In some cases, the zoom operation is performed by gravity acting on the constituent members of the zoom lens even though no smaller operating force is applied to the zoom operation ring of the zoom lens than the predetermined amount. This erroneous operation has a problem in that the focal length fluctuates to prevent the next quick shooting, and that the entire length of the zoom lens becomes longer and the tip collides with an object or is immersed in water.
【０００３】カメラレンズにおける合焦操作トルクやズ
ーム操作トルクに関するこのような問題を解決するため
に、複数の寸法の摺動嵌合を準備して、いわゆる一個合
わせによって所定のトルクを得ることを行っている。他
の解決手段として、互いに摺動する摺動面の合成樹脂製
の一方に三個の突出摺動部を設けることが行われてい
る。この突出摺動部は、成形型の突出摺動部に対応する
部分の深さを深くすることによって高さを増す方向の調
整は容易に行うことができる。しかしながら、突出摺動
部の高さを減らす調整をするために成形型の突出摺動部
に対応する部分の深さを浅くすることは、成形型に肉を
盛ることを要し、煩わしい作業となる。[0003] In order to solve such a problem relating to the focusing operation torque and the zoom operation torque in a camera lens, slide fittings of a plurality of dimensions are prepared, and a predetermined torque is obtained by so-called unity. ing. As another solution, three protruding sliding portions are provided on one side of a sliding surface made of synthetic resin which slides on each other. Adjustment in the direction of increasing the height of the protruding sliding portion by increasing the depth of the portion corresponding to the protruding sliding portion of the mold can be easily performed. However, reducing the depth of the portion corresponding to the protruding sliding portion of the molding die in order to adjust the height of the protruding sliding portion requires an increase in the thickness of the molding die, which is troublesome work. Become.
【０００４】[0004]
【発明の目的】本発明は、従来のカメラレンズにおける
合焦操作トルクやズーム操作トルクに関する上述した問
題点に鑑みなされたものであって、簡易な構造で部品点
数も少なく、組み立て・調整が容易なレンズ操作トルク
調整機構及びそれを持ったレンズを提供することを目的
とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems relating to a focusing operation torque and a zoom operation torque of a conventional camera lens, and has a simple structure, a small number of parts, and easy assembly and adjustment. It is an object of the present invention to provide a lens operating torque adjusting mechanism and a lens having the same.
【０００５】[0005]
【課題を解決するための手段】本発明は、光学装置本体
に連結するためのマウント部材と一体の固定部と、該固
定部に摺動自在に摺動抵抗を持って取り付けられた操作
部とを有し、上記固定部と操作部の摺動部分の一方に、
変形可能な支持部によって支持された摺動当接面を複数
箇所に設けたことを特徴とするレンズ操作トルク調整機
構である。本発明の実施態様は、上記支持部が、上記摺
動当接面とほぼ同一の方向に延びた貫通孔を有している
ことを特徴とする。また、上記支持部が、片持ち腕部に
よって上記摺動当接面を支持していることを特徴とす
る。本発明はまた、光学装置本体に連結するためのマウ
ント部材と一体の固定部と、該固定部に摺動自在に摺動
抵抗を持って取り付けられた操作部とを有し、上記固定
部と操作部の摺動部分の一方に、変形可能な支持部によ
って支持された摺動当接面を複数箇所に設けたことを特
徴とするレンズである。According to the present invention, there is provided a fixed portion integral with a mount member for coupling to an optical device main body, and an operating portion slidably attached to the fixed portion with sliding resistance. Having one of the fixed part and the sliding part of the operation part,
A lens operating torque adjusting mechanism, wherein a sliding contact surface supported by a deformable support portion is provided at a plurality of locations. An embodiment of the present invention is characterized in that the support portion has a through hole extending in substantially the same direction as the sliding contact surface. Further, the support portion supports the sliding contact surface with a cantilever arm portion. The present invention also has a fixed portion integrated with a mount member for coupling to the optical device main body, and an operation portion slidably attached to the fixed portion with sliding resistance. A lens characterized in that a sliding contact surface supported by a deformable support portion is provided at a plurality of locations on one of the sliding portions of the operation portion.
【０００６】[0006]
【実施例】以下、図面に沿って本発明の好ましい実施の
態様を詳細に説明する。第１実施例のズームレンズ１
は、図４に示すように、カメラ本体（図示せず）に取り
付けられる第１固定筒１０、第１固定筒１０に対し直進
摺動する直進筒１２、ズーム操作で移動する第１レンズ
群１４を支持する第１レンズ支持部１６、ズーム操作で
移動する第２レンズ群２０を支持する第２レンズ支持部
２２、カム筒２４のカム溝２６、２７内で摺動する摺動
コマ２８、２９、ズーム操作するためのズーム環３０、
第１固定筒１０と実質的に一体の第２固定筒３２を有す
る。ズーム環３０は、図１に示すように、第２固定筒３
２に当接する面５０の三カ所に摺動突出部５２、５４、
５６が形成されている。摺動突出部５２、５４、５６
は、図２に示すように、摺動突出部５２（５４、５６）
の内部位置に摺動突出部５２（５４、５６）を囲む大き
さのコの字型の貫通孔６０が設けられている。このよう
に構成することによって、摺動突出部５２、５４、５６
が一定の押圧によって第２固定筒３２上を摺動するため
の摺動突出部５２、５４、５６の頂上部の位置の許容誤
差は大きくなる。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. Zoom lens 1 of the first embodiment
As shown in FIG. 4, a first fixed barrel 10 attached to a camera body (not shown), a straight barrel 12 that slides straight on the first fixed barrel 10, and a first lens group 14 that moves by zoom operation , A second lens support 22 that supports a second lens group 20 that moves by a zoom operation, and sliding pieces 28 and 29 that slide in the cam grooves 26 and 27 of the cam barrel 24. A zoom ring 30 for performing a zoom operation;
It has a second fixed cylinder 32 substantially integral with the first fixed cylinder 10. The zoom ring 30 is, as shown in FIG.
Sliding protrusions 52, 54,
56 are formed. Sliding protrusions 52, 54, 56
As shown in FIG. 2, the sliding protrusions 52 (54, 56)
A U-shaped through-hole 60 having a size surrounding the sliding protrusion 52 (54, 56) is provided at an inner position of. With this configuration, the sliding protrusions 52, 54, 56
However, the tolerance of the position of the top of the sliding protrusions 52, 54, and 56 for sliding on the second fixed cylinder 32 by a constant pressing increases.
【０００７】第２実施例のズームレンズの摺動突出部１
００は、図３に示すように、ズーム環１０２から片持ち
腕式に延びて支持されている。このように構成すること
によって、摺動突出部１００が一定の押圧によって第２
固定筒３２上を所定の摺動抵抗をもって摺動するための
摺動突出部１０２の頂上部の位置の許容誤差は大きくな
る。上述した実施例はいずれもズーム操作トルク調整機
構に関するものであるが、まったく同様な構造によって
合焦操作トルク調整機構として応用できることは当業者
が容易に推定できることである。The sliding projection 1 of the zoom lens according to the second embodiment.
As shown in FIG. 3, reference numeral 00 extends from the zoom ring 102 in a cantilever manner and is supported. With this configuration, the sliding protrusion 100 can be moved to the second position by a certain pressure.
The tolerance of the position of the top of the sliding protrusion 102 for sliding on the fixed cylinder 32 with a predetermined sliding resistance increases. Each of the above-described embodiments relates to a zoom operation torque adjusting mechanism. However, it can be easily estimated by those skilled in the art that a completely similar structure can be applied as a focusing operation torque adjusting mechanism.
【０００８】[0008]
【発明の効果】本発明のレンズ操作トルク調整機構及び
それを備えたレンズによれば、簡易な構造で部品点数も
少なく、組み立て・調整が容易なレンズ操作トルク調整
機構及びそれを持ったレンズを提供することを目的とす
る。According to the lens operation torque adjusting mechanism of the present invention and a lens having the same, a lens operation torque adjusting mechanism having a simple structure, a small number of parts, and easy to assemble and adjust, and a lens having the same are provided. The purpose is to provide.
【図１】本発明の第１実施例のレンズ操作トルク調整機
構の側面図である。FIG. 1 is a side view of a lens operation torque adjusting mechanism according to a first embodiment of the present invention.
【図２】図１の矢印ｌｌーｌｌから見た断面図である。FIG. 2 is a sectional view as viewed from arrows 11-11 in FIG. 1;
【図３】本発明の第２実施例のレンズ操作トルク調整機
構の図２に対応する断面図である。FIG. 3 is a sectional view corresponding to FIG. 2 of a lens operation torque adjusting mechanism according to a second embodiment of the present invention;
【図４】本発明の第１実施例のレンズ操作トルク調整機
構を備えたレンズの部分断面図である。FIG. 4 is a partial sectional view of a lens provided with a lens operation torque adjusting mechanism according to the first embodiment of the present invention.
１ ズームレンズ １０ 第１固定筒１０ １２ 第１レンズ群 １６ 第１レンズ支持部 ２０ 第２レンズ群 ２２ 第２レンズ支持部 ２６、２７ カム溝 ２８、２９ 摺動コマ ３０ ズーム環 ３２ 第２固定筒 ５２、５４、５６ 摺動突出部 １００ 摺動突出部 １０２ ズーム環 DESCRIPTION OF SYMBOLS 1 Zoom lens 10 1st fixed cylinder 10 12 1st lens group 16 1st lens support part 20 2nd lens group 22 2nd lens support part 26, 27 Cam groove 28, 29 Sliding frame 30 Zoom ring 32 2nd fixed cylinder 52, 54, 56 Sliding protrusion 100 Sliding protrusion 102 Zoom ring
Claims (4)
部材と一体の固定部と、該固定部に摺動自在に摺動抵抗
を持って取り付けられた操作部とを有し、 上記固定部と操作部の摺動部分の一方に、変形可能な支
持部によって支持された摺動当接面を複数箇所に設けた
ことを特徴とするレンズ操作トルク調整機構。1. A fixed part integral with a mount member for coupling to an optical device main body, and an operation part slidably attached to the fixed part with sliding resistance, wherein the fixed part A lens operation torque adjusting mechanism, wherein a sliding contact surface supported by a deformable support portion is provided at a plurality of positions on one of sliding portions of an operation portion.
一の方向に延びた貫通孔を有していることを特徴とする
請求項１に記載のレンズ操作トルク調整機構。2. The lens operating torque adjusting mechanism according to claim 1, wherein said support portion has a through hole extending in substantially the same direction as said sliding contact surface.
摺動当接面を支持していることを特徴とする請求項１に
記載のレンズ操作トルク調整機構。3. The lens operating torque adjusting mechanism according to claim 1, wherein said support portion supports said sliding contact surface with a cantilever arm portion.
部材と一体の固定部と、該固定部に摺動自在に摺動抵抗
を持って取り付けられた操作部とを有し、 上記固定部と操作部の摺動部分の一方に、変形可能な支
持部によって支持された摺動当接面を複数箇所に設けた
ことを特徴とするレンズ。4. A fixed part integral with a mount member for coupling to an optical device main body, and an operation part slidably attached to the fixed part with sliding resistance. A lens, wherein a sliding contact surface supported by a deformable support portion is provided at a plurality of positions on one of sliding portions of an operation portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17153397A JPH1114882A (en) | 1997-06-27 | 1997-06-27 | Lens operation torque adjusting mechanism and lens provided with the mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17153397A JPH1114882A (en) | 1997-06-27 | 1997-06-27 | Lens operation torque adjusting mechanism and lens provided with the mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1114882A true JPH1114882A (en) | 1999-01-22 |
Family
ID=15924895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17153397A Pending JPH1114882A (en) | 1997-06-27 | 1997-06-27 | Lens operation torque adjusting mechanism and lens provided with the mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1114882A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001305409A (en) * | 2000-04-19 | 2001-10-31 | Matsushita Electric Ind Co Ltd | Lens barrel |
| JP2006113106A (en) * | 2004-10-12 | 2006-04-27 | Pentax Corp | Focus torque control mechanism for lens barrel |
| JP2016142906A (en) * | 2015-02-02 | 2016-08-08 | コニカミノルタ株式会社 | Lens barrel |
-
1997
- 1997-06-27 JP JP17153397A patent/JPH1114882A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001305409A (en) * | 2000-04-19 | 2001-10-31 | Matsushita Electric Ind Co Ltd | Lens barrel |
| JP2006113106A (en) * | 2004-10-12 | 2006-04-27 | Pentax Corp | Focus torque control mechanism for lens barrel |
| JP4653997B2 (en) * | 2004-10-12 | 2011-03-16 | Ｈｏｙａ株式会社 | Lens barrel focus torque control mechanism |
| JP2016142906A (en) * | 2015-02-02 | 2016-08-08 | コニカミノルタ株式会社 | Lens barrel |
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