JPS6212905B2 - - Google Patents
Info
- Publication number
- JPS6212905B2 JPS6212905B2 JP56055762A JP5576281A JPS6212905B2 JP S6212905 B2 JPS6212905 B2 JP S6212905B2 JP 56055762 A JP56055762 A JP 56055762A JP 5576281 A JP5576281 A JP 5576281A JP S6212905 B2 JPS6212905 B2 JP S6212905B2
- Authority
- JP
- Japan
- Prior art keywords
- accessory
- filter
- pin
- contact
- accessory holder
- 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
- 230000003287 optical effect Effects 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 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
- G02B7/006—Filter holders
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
- Blocking Light For Cameras (AREA)
Description
【発明の詳細な説明】
本発明はフイルター等の付属品の緩み防止装置
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a loosening prevention device for accessories such as filters.
カメラ用交換レンズ・レンズ組み込みカメラ・
工業用テレビカメラのレンズ鏡胴等にフイルタ
ー・ガラス・補助レンズ等を着脱自在に設けて撮
影条件に合わせて付属品の交換・着脱を行う光学
機器がある。 Interchangeable lenses for cameras, cameras with built-in lenses,
There is an optical device in which a filter, glass, auxiliary lens, etc. are removably attached to the lens barrel of an industrial television camera, and accessories can be replaced or attached or detached according to shooting conditions.
このような場合に各種のフイルター・ガラス・
補助レンズ等の付属品をフイルター保持枠等の付
属品保持体にネジ込み、付属品保持体を前記光学
機器の鏡胴部に装着する。 In such cases, various filters, glasses,
An accessory such as an auxiliary lens is screwed into an accessory holder such as a filter holding frame, and the accessory holder is attached to the lens barrel of the optical device.
付属品は付属品保持体に対し交換可能に構成す
る必要があり、多くの場合ネジ込み形式がその構
造の簡単さ、取り付け取り外しの容易さから採用
される。しかし付属品と付属品保持体の両者にそ
れぞれ雄ネジ・雌ネジを形成した場合には付属品
保持体に付属品をネジ込み固定後、前記鏡胴部に
付属品保持体を装着し、撮影行為等を行うと振動
等により付属品が緩んでくる問題点が生じた。 Accessories must be configured to be replaceable with respect to the accessory holder, and in many cases a screw-in type is adopted because of its simple structure and ease of installation and removal. However, if both the accessory and the accessory holder are formed with male and female threads, respectively, screw the accessory into the accessory holder and fix it, then attach the accessory holder to the lens barrel and take a picture. A problem has arisen in which the accessories come loose due to vibrations, etc. when the product is used.
第１図において、フイルター１を付属品保持体
２にネジ１ａ，１ｂにてネジ込み固定し、付属品
保持体２を鏡胴部に装着後フイルター１がゆるむ
とフイルター１は第１図に示す点線位置の方向に
ずれる。このためフイルター１を交換のため付属
品保持体２をレンズ鏡胴部３から取り外そうとし
ても取り出せない事態が生ずる。 In Fig. 1, the filter 1 is screwed and fixed to the accessory holder 2 with screws 1a and 1b, and when the accessory holder 2 is attached to the lens barrel and the filter 1 is loosened, the filter 1 is as shown in Fig. 1. It shifts in the direction of the dotted line position. Therefore, even if an attempt is made to remove the accessory holder 2 from the lens barrel section 3 in order to replace the filter 1, a situation arises in which the filter 1 cannot be removed.
本発明は上述の問題を解決するために付属品保
持体２とフイルター１の間に緩み防止作用を働か
せることにより上述の事態を回避可能な装置を提
供することを目的とする。 SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, it is an object of the present invention to provide a device that can prevent the above-mentioned situation by exerting a loosening prevention effect between the accessory holder 2 and the filter 1.
更に本発明の目的はフイルターや補助レンズ等
を付属品保持体に取り付け後、保持体をレンズ鏡
胴に装着する際に付属品が付属品保持体にロツク
され、その後、振動等によつても容易に緩むこと
なく付属品保持体がレンズ鏡胴からスムーズに離
脱できる装置を提供する。 A further object of the present invention is that after a filter, auxiliary lens, etc. are attached to the accessory holder, the accessories are locked to the accessory holder when the holder is attached to the lens barrel, and then the accessories are locked to the accessory holder, and thereafter, even if caused by vibration or the like, To provide a device that allows an accessory holder to smoothly detach from a lens barrel without easily loosening.
又、本発明の目的は付属品保持体をレンズ鏡胴
等の光学機器から取り外した際には付属品と付属
品保持体のロツクが自動的に解除され、付属品の
交換が容易に行ない得る装置を提供する。 Another object of the present invention is that when the accessory holder is removed from an optical device such as a lens barrel, the lock between the accessory and the accessory holder is automatically released, and the accessory can be easily replaced. Provide equipment.
以下図を参照して本発明の実施例について詳述
する。 Embodiments of the present invention will be described in detail below with reference to the drawings.
符号２は付属品保持体であり、付属品１をネジ
止めするネジ部２ａを有する円環部２ｂと、把手
部２ｃ、及び円環部２ｂと把手部２ｃを接ぐ接続
部２ｄ等から成る。 Reference numeral 2 denotes an accessory holder, which includes an annular portion 2b having a threaded portion 2a for screwing the accessory 1, a handle portion 2c, and a connecting portion 2d connecting the annular portion 2b and the handle portion 2c.
符号４，５，６はピン部材であり付属品保持体
の接続部２ｄに形成した孔部内に挿入されてい
る。該孔部はピン部材４，５が挿入される孔部と
該孔部に略直角方向に向けられ前記円環部に通じ
る孔部とからなる。押ピン４は接続部２ｄの平面
から前記孔部に挿入され抜け出さないように入れ
られており、連結ピン５と連結している。連結ピ
ン５（第２図ｅ参照）はロツクピン６とは傾斜面
５ａ，６ａにて当接している。ロツクピン６の他
の面は前記接続部２ｄの孔部を通つて前記円環部
２ｂを開口し付属品１の外周部と対面する位置に
配置する。（第２図ｄ参照）
７は前記連結ピン５と接続部２ｄの孔部の壁面
間に配置されたコイルバネ、８は前記押ピン４と
連結ピン５の間に配置されたコイルバネであり各
バネ７，８は連結ピン５・押ピン４をそれぞれ矢
印Ａ方向に附勢する。 Reference numerals 4, 5, and 6 indicate pin members, which are inserted into holes formed in the connecting portion 2d of the accessory holder. The hole portion consists of a hole portion into which the pin members 4 and 5 are inserted, and a hole portion oriented substantially perpendicularly to the hole portion and communicating with the annular portion. The push pin 4 is inserted into the hole from the plane of the connecting portion 2d so as not to come out, and is connected to the connecting pin 5. The connecting pin 5 (see FIG. 2e) is in contact with the locking pin 6 at inclined surfaces 5a and 6a. The other surface of the lock pin 6 passes through the hole of the connecting portion 2d, opens the annular portion 2b, and is disposed at a position facing the outer peripheral portion of the accessory 1. (See Figure 2d) 7 is a coil spring arranged between the connection pin 5 and the wall of the hole of the connection part 2d, 8 is a coil spring arranged between the push pin 4 and the connection pin 5, and each spring 7 and 8 urge the connecting pin 5 and push pin 4 in the direction of arrow A, respectively.
９はロツク部材６の腕部６ｂと前記孔部の壁面
間に挿入されロツクピン６を矢印Ｂ方向に附勢す
るコイルバネである。 A coil spring 9 is inserted between the arm 6b of the lock member 6 and the wall of the hole and biases the lock pin 6 in the direction of arrow B.
ロツクピン６のフイルター１と対面する面は円
弧面でローレツト６ｃに仕上げられている。 The surface of the lock pin 6 facing the filter 1 is an arcuate surface finished with knurling 6c.
レンズ鏡胴から付属品保持体２に引き抜いた状
態においては第２図ａ，ｂ，ｃに示すように、各
コイルバネ７，８，９に依つてＡ・Ｂ方向に附勢
されておりロツクピン６のローレツト面６ｃはフ
イルターの外周面から距離をおいて場所に位置
し、押ピン４の端面は保持体の前記接続部の平面
２ｆから突出している。 When the accessory holder 2 is pulled out from the lens barrel, the lock pin 6 is biased in directions A and B by the coil springs 7, 8, and 9, as shown in FIGS. The knurled surface 6c is located at a distance from the outer circumferential surface of the filter, and the end surface of the push pin 4 projects from the plane 2f of the connecting portion of the holder.
この状態において付属品の交換は容易に行なえ
る。付属品を取り付けた後、レンズ鏡胴の開口部
に付属品保持体を挿入する際に、前記押ピン４の
突出面が矢印Ａと反対方向に押される。押ピン４
が反Ａ方向に押されると連結ピン５を介してロツ
クピン６がバネ９のバネ力に抗して矢印Ｃ方向に
押される。 In this state, accessories can be easily replaced. After attaching the accessory, the protruding surface of the push pin 4 is pushed in the direction opposite to arrow A when inserting the accessory holder into the opening of the lens barrel. push pin 4
When is pushed in the opposite direction A, the lock pin 6 is pushed in the direction of arrow C through the connecting pin 5 against the spring force of the spring 9.
これによりロツクピン６のローレツトに仕上げ
られた端面は付属品保持体の円環部に突出してフ
イルターのネジ部１ａと噛み合うように当接す
る。このロツクピン６とフイルター１の噛み合い
によりフイルターは保持体に係止され、拡動等に
よる緩みを防ぐことができる（第３図ａ，ｂ，ｃ
参照）。 As a result, the knurled end surface of the lock pin 6 protrudes from the annular portion of the accessory holder and engages with the threaded portion 1a of the filter. The meshing of the locking pin 6 and the filter 1 locks the filter to the holder and prevents it from loosening due to expansion, etc. (Fig. 3 a, b, c)
reference).
第４図ａ〜ｄに示す例は本発明の他の実施例を
示すものであり、本実施例においては前記連結ピ
ン５・バネ部材７，８，９を使用しない実施例を
示す。符号１０はロツクピンを示し、フイルター
と対面する端面にはローレツト１０ａを切り、他
端は傾斜面１０ｂとを成し、押しピン１１と当接
している。該ロツクピンは弾性力のある樹脂材料
にてモールド成形加工によつて作ることが好まし
く、ロツクピン１０の側面には第４図ｄに図示す
るような先端が湾曲した腕部１０c1，１０c2を形
成する。 The examples shown in FIGS. 4a to 4d show other embodiments of the present invention, and this embodiment shows an embodiment in which the connecting pin 5 and the spring members 7, 8, and 9 are not used. Reference numeral 10 designates a lock pin, the end face facing the filter has a knurl 10a, the other end forms an inclined face 10b, and is in contact with a push pin 11. The lock pin is preferably made of an elastic resin material by molding, and arm portions 10c 1 and 10c 2 having curved tips as shown in FIG. 4d are formed on the sides of the lock pin 10. do.
押ピン１１は一端は前記ロツクピン１０の傾斜
面１０ｂと当接し、付属品保持体の接続部２ｄに
設けた孔部２ｇ内に可動に配置し、他端は接続部
の側面２ｆから突出している。 The push pin 11 has one end in contact with the inclined surface 10b of the lock pin 10, is movably arranged in a hole 2g provided in the connection part 2d of the accessory holder, and the other end projects from the side surface 2f of the connection part. .
ロツクピン１０を接続部２ｄの孔部に挿入する
と、ロツクピン１０の湾曲腕部１０c1，１０c2は
第４図ｂに示すように矢印方向に反力を生じロツ
クピン１０を矢印Ｄ方向に押し上げる力が作用す
る。 When the lock pin 10 is inserted into the hole of the connecting portion 2d, the curved arms 10c 1 and 10c 2 of the lock pin 10 generate a reaction force in the direction of the arrow as shown in FIG. act.
この作用力によりロツクピン１０のローレツト
面はフイルターの外周面から離れた場所に位置す
る。フイルターを取り付けた後、付属品保持体２
をレンズ鏡胴の開口部に装着する際に押ピン１１
の突出面が第４図ａの矢印Ｅ方向に押されこの力
が前記湾曲腕のＤ方向の押し上げ力に逆らつてロ
ツクピン１０を矢印Ｆ方向に押し下げローレツト
面とフイルター外周のネジ部とが噛み合つてフイ
ルターの緩みを阻止することになる。 This acting force causes the knurled surface of the lock pin 10 to be located away from the outer peripheral surface of the filter. After installing the filter, attach the accessory holder 2
When attaching the lens to the opening of the lens barrel, press the push pin 11.
The protruding surface of the filter is pushed in the direction of arrow E in FIG. This will also prevent the filter from loosening.
以上のように本発明においては付属品保持体２
をレンズ鏡胴に装着する際に押ピン４，１１にて
ロツクピン６，１０を押し下げ、ロツクピンの端
面にてフイルター等の付属品を押し付けることに
よりフイルターの緩みを防ぐ構成であり、付属品
保持体をレンズ鏡胴から離脱する時にはフイルタ
ーのロツクは解されており、次のフイルター交換
作業が楽に行うことができる。 As described above, in the present invention, the accessory holder 2
When attaching the lens to the lens barrel, the push pins 4 and 11 push down the lock pins 6 and 10, and the end face of the lock pin presses an accessory such as a filter to prevent the filter from loosening. When the filter is removed from the lens barrel, the filter is unlocked and the next filter replacement operation can be carried out easily.
第１図は従来技術の説明図。第２図ａ〜ｅ、第
３図ａ〜ｂは本発明の第１の実施例を示し、第２
図ａ・第３図ａは装置の断面図。第２図ｂ・第３
図ｂは第２図ａのA1−A2方向断面図。第２図
ｃ・第３図ｃは第２図ａの側面図。第２図ｄはロ
ツクピン６の斜視図。第２図ｅは連結ピン５の斜
視図。第４図ａ〜ｄは第２の実施例を示し、第４
図ａは装置の断面図。第４図ｂは第４図ａのB1
−B2方向の断面図。第４図ｃは側面図。第４図
ｄはロツクピン１０の斜視図。
４，１１……押ピン、５……連結ピン、６，１
０……ロツクピン、７，８，９……バネ。
FIG. 1 is an explanatory diagram of the prior art. Figures 2a to 3e and 3a to 3b show a first embodiment of the present invention, and a second embodiment of the present invention.
Figures a and 3a are cross-sectional views of the device. Figure 2b, 3rd
Figure b is a sectional view in the A1 - A2 direction of Figure 2a. Figures 2c and 3c are side views of Figure 2a. FIG. 2d is a perspective view of the lock pin 6. FIG. 2e is a perspective view of the connecting pin 5. Figures 4 a to d show the second embodiment;
Figure a is a sectional view of the device. Figure 4b is B 1 of Figure 4a.
−B Cross-sectional view in two directions. Figure 4c is a side view. FIG. 4d is a perspective view of the locking pin 10. 4,11...Push pin, 5...Connection pin, 6,1
0... Lock pin, 7, 8, 9... Spring.
Claims (1)
に保持する付属品保持体に、光軸方向に移動可能
に支持された押圧部材及び光軸に対して径方向で
あり、且つ前記付属品のネジ面と非接触な位置と
接触する位置とに移動可能に支持されたロツク部
材を設け、更には前記ロツク部材を前記非接触位
置への方向へ付勢するバネ部材を設け、前記押圧
部材は該付属品保持体の光学機器への非装着状態
での第１位置から、装着状態での該光学機器との
当接に基づく押動による第２位置へと移動し、前
記ロツク部材は前記押圧部材の前記第１位置から
前記第２位置への移動に当接連動し、前記バネ部
材の付勢力に抗して前記付属品の前記ネジ面と非
接触な第１の位置から、接触する第２の位置へと
移動し、前記付属品が前記付属品保持体にロツク
されることを特徴とする光学機器におけるフイル
ター等の緩み防止装置。1. An accessory holder that removably holds an accessory such as a filter by screwing, a pressing member supported movably in the optical axis direction, and a screw of the accessory that is radially oriented with respect to the optical axis. A lock member is provided that is movably supported at a position in which it is not in contact with the surface and a position in which it is in contact with the surface, and further provided is a spring member that biases the lock member in the direction of the non-contact position, and the pressing member is in contact with the surface. The accessory holder is moved from the first position when it is not attached to the optical device to the second position by pushing based on the contact with the optical device when it is attached, and the locking member is moved by the pressing member from the first position to the second position, and contacts the threaded surface of the accessory from the first position where it is not in contact against the biasing force of the spring member. A loosening prevention device for a filter or the like in an optical instrument, characterized in that the accessory is moved to a position where the accessory is locked in the accessory holder.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5576281A JPS57169707A (en) | 1981-04-14 | 1981-04-14 | Slack preventing device for filter or the like in optical apparatus |
| US06/591,386 US4536057A (en) | 1981-04-14 | 1984-03-20 | Filter mounting mechanism for an optical assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5576281A JPS57169707A (en) | 1981-04-14 | 1981-04-14 | Slack preventing device for filter or the like in optical apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57169707A JPS57169707A (en) | 1982-10-19 |
| JPS6212905B2 true JPS6212905B2 (en) | 1987-03-23 |
Family
ID=13007854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5576281A Granted JPS57169707A (en) | 1981-04-14 | 1981-04-14 | Slack preventing device for filter or the like in optical apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57169707A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5560124U (en) * | 1978-10-18 | 1980-04-24 |
-
1981
- 1981-04-14 JP JP5576281A patent/JPS57169707A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57169707A (en) | 1982-10-19 |
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