JPS6160411B2 - - Google Patents
Info
- Publication number
- JPS6160411B2 JPS6160411B2 JP56095573A JP9557381A JPS6160411B2 JP S6160411 B2 JPS6160411 B2 JP S6160411B2 JP 56095573 A JP56095573 A JP 56095573A JP 9557381 A JP9557381 A JP 9557381A JP S6160411 B2 JPS6160411 B2 JP S6160411B2
- Authority
- JP
- Japan
- Prior art keywords
- helicoid
- screw
- thread
- screwed
- elastic
- 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.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 5
- 229920003002 synthetic resin Polymers 0.000 claims description 4
- 239000000057 synthetic resin Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 10
- 239000011295 pitch Substances 0.000 description 9
- 238000000465 moulding Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/026—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using retaining rings or springs
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
- Transmission Devices (AREA)
Description
【発明の詳細な説明】
本発明は光学機器のレンズ用ヘリコイド部材に
関し、特に、合成樹脂材料によつて一体成形する
ヘリコイド部材におけるヘリコイドネジのガタを
防止することのできるレンズ用ヘリコイド部材の
提供を目的とするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a helicoid member for a lens of an optical device, and in particular, to provide a helicoid member for a lens that can prevent rattling of a helicoid screw in a helicoid member integrally molded from a synthetic resin material. This is the purpose.
合成樹脂材料にて一体成形したヘリコイドにお
けるネジ山精度上の欠陥を解消する目的から、第
１〜４図示のヘリコイド部材が特開昭56−9710号
（特願昭54−85174号）公報所載の光学機器に於け
るレンズ用ヘリコイド部材が提案された。 For the purpose of eliminating defects in thread accuracy in helicoids integrally molded from synthetic resin materials, the helicoid members shown in Figures 1 to 4 are published in Japanese Patent Application Laid-Open No. 56-9710 (Japanese Patent Application No. 54-85174). A helicoid member for lenses in optical equipment has been proposed.
しかして、第１図示のヘリコイド部材は、ヘリ
コイド筒部１の外周にヘリコイドネジ２を螺設す
るとともにこのヘリコイドネジ２のピツチを一部
微小に変化せしめたａ部を設け、プラスチツク材
料にて一体成形することにより構成したものであ
る。 Thus, the helicoid member shown in the first figure has a helicoid screw 2 screwed on the outer periphery of a helicoid cylinder portion 1, and a part a in which the pitch of the helicoid screw 2 is partially slightly changed, and is integrally made of plastic material. It is constructed by molding.
かゝるヘリコイド部材の場合には、ヘリコイド
ネジ２に螺合する部材間の噛合において、ヘリコ
イドネジ２の成形加工時の寸法誤差や、摩耗して
ガタが生じても、上記一部の微小に異なる部分ａ
によりガタを吸収することができるようにしたも
のである。 In the case of such a helicoid member, in the engagement between the members screwed into the helicoid screw 2, even if there is a dimensional error during the molding process of the helicoid screw 2 or play due to wear occurs, the above-mentioned part of the slight different part a
This makes it possible to absorb backlash.
第２図のヘリコイド部材は、ヘリコイド筒部１
の外周にヘリコイドネジ２を螺設するとともにこ
のヘリコイドネジ２の一部にリード角の微小に異
なる部分ｂを設け、プラスチツク材料により一体
成形することにより構成したものである。 The helicoid member in FIG.
A helicoid screw 2 is screwed around the outer periphery of the helicoid screw 2, a portion b having a slightly different lead angle is provided in a part of the helicoid screw 2, and the helicoid screw 2 is integrally molded from a plastic material.
このヘリコイド部材における場合には、当該リ
ード角の微小に異なる部分ｂにより吸収すること
により、ガタの発生を防止せんとするものであ
る。 In the case of this helicoid member, it is intended to prevent the occurrence of backlash by absorbing it by the portion b having a slightly different lead angle.
第３図のヘリコイド部材は、ヘリコイド筒部１
にヘリコイドネジ２を螺設する点については同一
であるが、このヘリコイドネジ２の一部に他と異
なつたネジ山形状を有する部分ｃ（他のネジ山の
幅より広い幅のネジ山を設けてある）を設けたも
ので、当該部分ｃによつて、ガタを吸収し、ガタ
の発生を防止せんとする。 The helicoid member in FIG.
The helicoid screw 2 is screwed in the same way, but part c of the helicoid screw 2 has a different thread shape (a thread with a wider width than the other threads). This part (c) absorbs looseness and prevents the occurrence of looseness.
さらに、第４図はヘリコイド部材に設けるヘリ
コイドネジの部分的な拡大図で、かゝる構成の場
合には、ヘリコイドネジ２のネジ山の一部に、ネ
ジリードに沿つて溝３を設けることにより構成し
た場合を示し、当該溝３により、ネジ山に矢印方
向に対する弾性を付与することより、ネジがスラ
スト方向に押圧された場合の反力によつてガタを
防止せんとしたものである。 Furthermore, FIG. 4 is a partially enlarged view of the helicoid screw provided in the helicoid member, and in the case of such a configuration, a groove 3 is provided in a part of the thread of the helicoid screw 2 along the screw lead. The groove 3 gives elasticity to the screw thread in the direction of the arrow, thereby preventing rattling due to the reaction force when the screw is pressed in the thrust direction.
しかるに、これらのヘリコイド部材の各構成に
は以下のような欠点が存在するものである。 However, each configuration of these helicoid members has the following drawbacks.
(1) ピツチ、リード角あるいはネジ山形状を一部
変化せしめて構成しても、ヘリコイドネジに対
して螺合する部材のネジが、ヘリコイドネジの
上記ピツチ、リード角あるいはネジ山形状の変
化部分に対しても噛合摺動するため、ヘリコイ
ドネジに摩耗を生じた場合には、上記ピツチ、
リード角あるいはネジ山形状の異なる部分も同
様に摩耗を生じ、ヘリコイドの摩耗によるガタ
は防止することができない。(1) Even if the pitch, lead angle, or thread shape is partially changed, the screw of the member that is screwed into the helicoid screw is the part where the pitch, lead angle, or thread shape of the helicoid screw has changed. Since the helicoid screw also engages and slides, if wear occurs on the helicoid screw, the above pitch,
Parts with different lead angles or thread shapes also wear out, and it is impossible to prevent the helicoid from rattling due to wear.
(2) ヘリコイドネジの一部に、その形状等の異な
る部分を設けることは、螺合摺動操作の点から
は螺合有効部分全域が均等に摺動しないことか
ら、ピツチ、リード角、ネジ山形状の異なる部
分のネジ山の摩耗が早くなる。(2) Providing parts with different shapes etc. in a part of the helicoid screw means that the entire effective part of the thread does not slide evenly from the viewpoint of threading and sliding operation, so the pitch, lead angle, thread Screw threads in parts with different thread shapes wear out faster.
従つて、ヘリコイドの回転トルクについては
初期の設定値を維持しにくいものとなる。 Therefore, it becomes difficult to maintain the initial setting value for the rotational torque of the helicoid.
(3) 温度変化によるネジピツチの変化を、ガタ吸
収部分で吸収することについては、通常のネジ
部も変形すると同時に上記ガタ吸収部分のネジ
部も同様に変形を起すので、実際上、上記吸収
部分のネジ形状の設定は、ヘリコイドの回転ト
ルク設定と相俟つて相当困難である。(3) Regarding the absorption of changes in screw pitch due to temperature changes by the backlash absorbing part, since the normal screw part also deforms and the thread part of the backlash absorbing part also deforms, in reality, the above-mentioned backlash absorbing part Setting the thread shape of the helicoid is quite difficult due to the setting of the rotational torque of the helicoid.
さらに、金型に変形量を見込んで、ガタ吸収
部分のネジと通常のネジ部の形状寸法を設定す
ることは非常に困難である。 Furthermore, it is very difficult to set the shapes and dimensions of the screw of the backlash absorbing portion and the normal screw portion while taking into account the amount of deformation of the mold.
(4) ヘリコイドのネジ山に溝を設け、ネジ山に弾
性を付与した構成を含む、上記各ガタ吸収部分
は、その他の部分に比較して噛合のクリアラン
スが小さいから、ヘリコイドの回転トルクは重
くなる。(4) Each of the above-mentioned backlash absorbing parts, which include a structure in which grooves are provided on the threads of the helicoid and elasticity is added to the threads, has a smaller engagement clearance than other parts, so the rotational torque of the helicoid is heavy. Become.
従つて、ガタ吸収部分に螺合する噛合長さ
が、ヘリコイドの繰り出し、入れによつて変化
する場合はヘリコイドの回転トルクを一定にす
ることができず、回転ムラの発生を否めない。 Therefore, if the engagement length of the helicoid that is screwed into the backlash absorbing portion changes as the helicoid is extended or inserted, the rotational torque of the helicoid cannot be kept constant, and uneven rotation cannot be avoided.
(5) ヘリコイドのネジ山に溝を設け、弾性を付与
した構成の場合は、通常ヘリコイドネジの形状
は、ネジ山の高さが１mm程度、ネジ山の幅は
0.7mm程度であることからして、溝を設けて、
ネジ山の曲げ弾性を使うには、寸法の選定範囲
があまりにも小さ過ぎ、バネ定数を自由に設定
することができない。(5) In the case of a structure in which a groove is provided on the helicoid thread to give it elasticity, the shape of the helicoid screw is usually about 1 mm in height and width in the thread.
Considering that it is about 0.7mm, a groove is provided,
To use the bending elasticity of the screw thread, the range of dimensions to be selected is too small, and the spring constant cannot be freely set.
従つて、ヘリコイドの回転トルクを適正にす
ることを前提とした場合に、溝の形状を決定す
ることは非常に困難である。 Therefore, it is very difficult to determine the shape of the groove on the assumption that the rotational torque of the helicoid is appropriate.
因て、本発明は以上の欠点なく所期の作用効果
を有効裡に得られるレンズ用ヘリコイド部材を提
供せんとするもので、以下には本発明のレンズ用
ヘリコイド部材の実施例を図面とともに詳述す
る。 Therefore, it is an object of the present invention to provide a helicoid member for a lens that can effectively obtain the desired functions and effects without the above-mentioned drawbacks.Examples of the helicoid member for a lens according to the present invention will be described in detail below along with drawings. Describe.
第５〜７図は本発明の第１実施例を示し、合成
樹脂を材料として一体成形するヘリコイド筒部１
１の外周にヘリコイドネジ１２を螺設するととも
にこのヘリコイドネジ１２に対してラジアル方向
の弾性（バネ作用）を付与するために、ヘリコイ
ド筒部１１の外周に連続して螺設する通常の構成
に換えて、これを第５，６図に示す如く３分割し
ての断続するヘリコイド１２を螺設する。 5 to 7 show a first embodiment of the present invention, in which a helicoid cylinder portion 1 is integrally molded from synthetic resin.
In order to provide elasticity (spring action) in the radial direction to the helicoid screw 12 while threading the helicoid screw 12 on the outer periphery of the helicoid cylinder portion 11, the helicoid screw 12 is continuously screwed on the outer periphery of the helicoid cylinder portion 11. Instead, this is divided into three parts as shown in FIGS. 5 and 6, and intermittent helicoids 12 are screwed thereon.
各ヘリコイドネジ１２の解放端部１２ａは、ヘ
リコイド筒部１１の外周面にニゲミゾ１４を設け
ることにより、ラジアル方向の弾性（バネ作用）
を付与することができるように構成し、当該ヘリ
コイドネジ１２の各端部１２ａに弾性部（バネ
部）１３を形成したものである。 The open end portion 12a of each helicoid screw 12 has elasticity in the radial direction (spring action) by providing a groove 14 on the outer peripheral surface of the helicoid cylinder portion 11.
The elastic portion (spring portion) 13 is formed at each end portion 12a of the helicoid screw 12.
また、各弾性部１３には均等な弾性が発揮され
るようにスリワリ１５を設けてある。 Further, each elastic portion 13 is provided with a slit 15 so that uniform elasticity is exhibited.
さらに、各弾性部１３のネジ山の形状について
は第７図に示す形状の各実施例を挙げることがで
き、第７図ａの場合には弾性部１３におけるネジ
山をその解放端１２ａに至る程外側に湾曲せしめ
て形成した場合、第７図ｂは、各ネジ山間のネジ
ミゾ１３ａを解放端１２ａに至る程漸次浅く形成
した場合、第７図ｃは各ネジ山１３ｂを解放端１
２ａに至る程漸次高く形成した場合の実施例を示
す。 Further, regarding the shape of the thread of each elastic part 13, examples of the shape shown in FIG. 7 can be cited, and in the case of FIG. Fig. 7b shows a case in which the screw grooves 13a between each screw thread are formed to gradually become shallower as they reach the open end 12a, and Fig. 7c shows a case in which each thread 13b is curved outward toward the open end 1.
An example will be shown in which the height is gradually increased up to 2a.
第８〜１０図は本発明の第２実施例を示し、上
記第１実施例における各弾性部１３において互い
に連結する各ネジ山１３ｂを、当該実施例におい
ては、これを互いに独立せしめて構成した場合の
実施例である。 8 to 10 show a second embodiment of the present invention, in which the screw threads 13b connected to each other in each elastic portion 13 in the first embodiment are configured to be independent from each other. This is an example of the case.
即ち、各弾性部１３の各ネジ山１６間にスリワ
リ２１を設けることにより、各ネジ山１６を独立
せしめて構成したものである。 That is, by providing a slot 21 between each thread 16 of each elastic portion 13, each thread 16 is made independent.
但し、各ネジ山１６を互いに独立する当該実施
例は、複数本（例えば２あるいは３ピツチ毎のネ
ジ山を互いに分離する構成）毎を分離する構成に
よる実施も勿論可能である。 However, the embodiment in which the threads 16 are made independent from each other can of course be implemented with a structure in which a plurality of threads (for example, a structure in which every two or three pitches are separated from each other) are separated.
また、各弾性部１３の各ネジ山１６については
第１０図ａ，ｂに示す如く、その各開放端１６ａ
を外側に湾曲せしめて、あるいは各ネジ山１６の
高さを、開放端１６ａに至る程漸次高くすること
により形成し、当該ヘリコイドネジ１２の弾性部
１３に噛合する部材、例えば通称ナカヘリとの噛
合において干渉を惹起せしめることができるよう
に構成することが可能である。 Further, as for each thread 16 of each elastic portion 13, each open end 16a thereof is as shown in FIGS. 10a and 10b.
It is formed by curving outward or by gradually increasing the height of each thread 16 until it reaches the open end 16a, and meshing with a member that meshes with the elastic part 13 of the helicoid screw 12, for example, a so-called inner helical. It is possible to configure such that interference can be caused in
上記第１，２実施例についてはヘリコイドネジ
を３分割した実施例を示すが、ヘリコイド筒部１
１の外周に螺設するヘリコイドネジを多分割ある
いは等分的な分割でない変則的な分割による実施
に加えてヘリコイド筒部１１の外周に連続して螺
設されたヘリコイドネジの一部分の部分的なネジ
部に上記した各弾性部を構成することにより、あ
るいは一部分だけでなく、複数の任意の箇所のネ
ジ部に弾性部を構成することにより実施すること
ができる。 The first and second embodiments above show examples in which the helicoid screw is divided into three parts, but the helicoid cylinder part 1
In addition to dividing the helicoid screw threaded onto the outer periphery of the helicoid cylinder part 11 into multiple parts or irregularly dividing the helicoid screw threaded into the outer periphery of the helicoid cylinder part 11, partial division of a part of the helicoid screw threaded continuously onto the outer periphery of the helicoid cylinder part 11 is performed. This can be implemented by configuring each of the above-mentioned elastic parts on the threaded part, or by configuring the elastic parts not only in one part but also in a plurality of arbitrary locations of the threaded part.
しかして、上記各構成から成るヘリコイド部材
のヘリコイドネジ１２に螺合する部材、例えば通
称ナカヘリが、これに噛合摺動する場合、ナカヘ
リのネジ山がヘリコイドネジ１２の弾性部１３、
に干渉し、これを押し下げ、ラジアル方向に曲げ
の弾性変形を起こさせる。 Therefore, when a member that is screwed into the helicoid screw 12 of the helicoid member having each of the above-mentioned configurations, for example, a so-called inner helical member, engages and slides thereon, the thread of the inner helical member is connected to the elastic portion 13 of the helicoid screw 12,
interferes with the structure, pushes it down, and causes elastic bending deformation in the radial direction.
従つて、両者が噛合摺接する状態にある時は、
常に弾性部１３は作用、反作用の力によつて互い
に押圧し続ける作用が働き続けるので、ヘリコイ
ドネジ１２のガタを防止することができる。 Therefore, when the two are in meshing and sliding contact,
Since the elastic portions 13 always continue to press each other due to action and reaction forces, play in the helicoid screw 12 can be prevented.
以上の説明から明らかなように本発明によれば
以下の如き作用、効果を得ることができる。 As is clear from the above description, according to the present invention, the following actions and effects can be obtained.
(1) ヘリコイドネジの一部を曲げ弾性を利用した
バネ効果を有するネジとすることにより、ヘリ
コイドネジの成形後の精度が低く、ヘリコイド
ガタを生じるネジ形状であつても、それと噛合
う部材を押圧することができるのでヘリコイド
ガタを無くすることができる。(1) By making a part of the helicoid screw a screw that has a spring effect that utilizes bending elasticity, even if the helicoid screw has a low precision after molding and has a screw shape that causes helicoid backlash, the parts that mesh with it can be easily Since it can be pressed, helicoid backlash can be eliminated.
(2) バネ効果を有するネジ部はヘリコイド筒部材
とともに一体成形することができるので成形コ
ストは変わらないし、量産ができる。(2) Since the threaded portion having a spring effect can be integrally molded with the helicoid cylinder member, the molding cost remains unchanged and mass production is possible.
(3) 成形加工だけで、成形後のヘリコイドネジ精
度が低くても組立後にヘリコイドガタを無くす
ることができるので、即ち、ラツプ工程が不要
となるので組立工数の低減ができる。(3) Even if the precision of the helicoid screw after molding is low, it is possible to eliminate the helicoid backlash after assembly by simply using the molding process. In other words, the wrapping process is not necessary, so the number of assembly steps can be reduced.
(4) ヘリコイドネジの一部を除いてほゞ全周にわ
たつてネジにバネ効果を持たせることもできる
ので、均等にネジのガタを防止することができ
る。(4) Since it is possible to give the screw a spring effect over almost the entire circumference except for a part of the helicoid screw, rattling of the screw can be evenly prevented.
(5) ヘリコイドの前後作動方向に対して連続して
ヘリコイドネジにバネ効果を持たせることがで
きるので、ヘリコイドの繰出し入れにかゝわら
ず一定の押圧力を与えることができ、ヘリコイ
ドの回転ムラを生じない。(5) Since the helicoid screw can have a continuous spring effect in the longitudinal direction of the helicoid, a constant pressing force can be applied regardless of whether the helicoid is drawn in or out, and uneven rotation of the helicoid can be prevented. does not occur.
(6) ヘリコイドネジが摩耗してネジのガタが増加
しても、あらかじめバネ効果を有するネジ部は
曲げの反力で押圧作用を発揮するので、ヘリコ
イドの回転トルク変動を小さく抑え込むことが
できる。ヘリコイドネジが摩耗してもガタ防止
の効果は維持される。(6) Even if the helicoid screw wears and the play of the screw increases, the threaded portion, which already has a spring effect, exerts a pressing action due to the reaction force of bending, so fluctuations in the rotational torque of the helicoid can be suppressed to a small level. Even if the helicoid screw wears out, the rattling prevention effect is maintained.
(7) ヘリコイドネジに弾性を与える場合、隣接す
るネジ山を一体としてバネ作用させるばかりで
なく、隣接するネジ山をそれぞれ独立してバネ
作用させることができるので、バネ定数の選択
に自由度が多く、ヘリコイドの回転トルク適正
化に対して容易に対処することができる。(7) When imparting elasticity to a helicoid screw, it is possible not only to apply a spring action to adjacent threads as a unit, but also to each adjoining thread thread to have a spring action independently, so there is a degree of freedom in selecting the spring constant. In many cases, it is possible to easily deal with optimization of the rotational torque of the helicoid.
(8) ヘリコイドネジ内のバネ効果を有するネジ部
のネジ形状は通常の形状以外に、ネジ山の高さ
あるいはネジ谷の深さが一定でなく、噛合嵌合
するネジと干渉する形状もある。(8) The thread shape of the threaded part with a spring effect in a helicoid screw is not only a normal shape, but also a shape where the height of the thread or the depth of the thread root is not constant, and there is a shape that interferes with the thread that is meshed and fitted. .
(9) 温度変化によるヘリコイドネジピツチの変化
についても常温時と何ら変ることなく本発明の
バネ効果を持つネジ部でネジのガタは防止され
る。(9) Even when the helicoid screw pitch changes due to temperature changes, there is no change in the helicoid screw pitch from that at room temperature, and the screw part with the spring effect of the present invention prevents the screw from rattling.
第１〜４図は従来のヘリコイド部材のヘリコイ
ド筒部を示す平面図および一部の拡大斜視図、第
５〜１０図は本発明の実施例を示し、第５，６図
は第１実施例を示すヘリコイド部材の平面図、一
部縦断側面図、第７図ａ〜ｃは弾性部の拡大平面
図、第８，９図は第２実施例を示す平面図、一部
縦断側面図、第１０図は弾性部の拡大平面図。
１１……ヘリコイド筒部、１２……ヘリコイド
ネジ、１２ａ……開放端部、１３……弾性部、１
３ａ……ネジミゾ、１３ｂ……ネジ山、１４……
ニゲミゾ、１５……スリワリ、１６……ネジ山、
１６ａ……開放端、１７……ニゲ部、１８……側
面ミゾ。
1 to 4 are a plan view and a partially enlarged perspective view showing a helicoid cylinder portion of a conventional helicoid member, FIGS. 5 to 10 show an embodiment of the present invention, and FIGS. 5 and 6 are a first embodiment. FIGS. 7a to 7c are enlarged plan views of the elastic portion, and FIGS. 8 and 9 are a plan view, a partially longitudinal side view, and a partially longitudinal side view of the helicoid member showing the second embodiment. FIG. 10 is an enlarged plan view of the elastic part. DESCRIPTION OF SYMBOLS 11... Helicoid tube part, 12... Helicoid screw, 12a... Open end part, 13... Elastic part, 1
3a...Screw groove, 13b...Screw thread, 14...
Nigemizo, 15...suriwari, 16...screw thread,
16a...Open end, 17...Nigge part, 18...Side groove.
Claims (1)
筒部の外周にヘリコイドネジを螺設したレンズ用
ヘリコイド部材において、 前記ヘリコイドネジを断続的に螺設するととも
にこの各ヘリコイドネジの解放端部に前記ヘリコ
イド筒部との間に空隙を設け、かつ径方向にはね
あげた弾性部を設け各ヘリコイドネジにラジアル
方向の弾性を付与することにより構成したことを
特徴とするレンズ用ヘリコイド部材。[Scope of Claims] 1. A helicoid member for a lens in which helicoid screws are screwed around the outer periphery of a helicoid cylinder portion integrally molded from a synthetic resin material, wherein the helicoid screws are screwed intermittently and the open ends of each helicoid screw are screwed intermittently. A helicoid member for a lens, characterized in that the helicoid member is constructed by providing a gap between the helicoid cylinder part and the helicoid cylinder part, and providing an elastic part that springs up in the radial direction to impart radial elasticity to each helicoid screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9557381A JPS57210305A (en) | 1981-06-20 | 1981-06-20 | Helicoid member for lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9557381A JPS57210305A (en) | 1981-06-20 | 1981-06-20 | Helicoid member for lens |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16766286A Division JPS6289921A (en) | 1986-07-16 | 1986-07-16 | Helicoid member for lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57210305A JPS57210305A (en) | 1982-12-23 |
| JPS6160411B2 true JPS6160411B2 (en) | 1986-12-20 |
Family
ID=14141327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9557381A Granted JPS57210305A (en) | 1981-06-20 | 1981-06-20 | Helicoid member for lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57210305A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6084516A (en) * | 1983-10-15 | 1985-05-13 | Olympus Optical Co Ltd | Helicoid device of lens barrel |
| JPS6084519A (en) * | 1983-10-15 | 1985-05-13 | Olympus Optical Co Ltd | Helicoid member for lens |
| JP2004264657A (en) * | 2003-03-03 | 2004-09-24 | Fuji Photo Optical Co Ltd | Lens barrel |
| JP2012022122A (en) * | 2010-07-14 | 2012-02-02 | Kantatsu Co Ltd | Optical lens module and assembling method thereof |
| EP3198322B1 (en) * | 2014-09-22 | 2022-05-11 | Institut National d'Optique | Mounting of an optical element in a barrel using a flexible ring |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54100758A (en) * | 1978-01-25 | 1979-08-08 | Nippon Chemical Ind | Feeding mechanism |
| JPS55120007A (en) * | 1979-03-09 | 1980-09-16 | Canon Inc | Lens barrel moving mechanism |
| JPS569710A (en) * | 1979-07-05 | 1981-01-31 | Canon Inc | Helicoid member for lens in optical apparatus |
-
1981
- 1981-06-20 JP JP9557381A patent/JPS57210305A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54100758A (en) * | 1978-01-25 | 1979-08-08 | Nippon Chemical Ind | Feeding mechanism |
| JPS55120007A (en) * | 1979-03-09 | 1980-09-16 | Canon Inc | Lens barrel moving mechanism |
| JPS569710A (en) * | 1979-07-05 | 1981-01-31 | Canon Inc | Helicoid member for lens in optical apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57210305A (en) | 1982-12-23 |
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