JPH0486636A - Optical equipment - Google Patents
Optical equipmentInfo
- Publication number
- JPH0486636A JPH0486636A JP19977390A JP19977390A JPH0486636A JP H0486636 A JPH0486636 A JP H0486636A JP 19977390 A JP19977390 A JP 19977390A JP 19977390 A JP19977390 A JP 19977390A JP H0486636 A JPH0486636 A JP H0486636A
- Authority
- JP
- Japan
- Prior art keywords
- mount
- screw holes
- periphery
- optical device
- screw 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 4
- 239000011347 resin Substances 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- 210000000078 claw Anatomy 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Structure And Mechanism Of Cameras (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明はカメラ等の光学機器に係り、詳しくは、交換レ
ンズ等の光学部材を機器本体に交換可能に取付けるため
の取付は用マウントの構造に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to optical equipment such as cameras, and more specifically, the present invention relates to a mount structure for attaching an optical member such as an interchangeable lens to a main body of the equipment in a replaceable manner. It is related to.
[従来の技術]
従来、光学機器、例えばカメラの交換レンズ取付は用マ
ウントには金属材料が用いられていた。しかしコスト削
減、軽量化を目的として、樹脂により成形された製品も
提供されている。[Prior Art] Conventionally, metal materials have been used for mounts for attaching interchangeable lenses to optical devices, such as cameras. However, products molded from resin are also available for the purpose of cost reduction and weight reduction.
このようなマウントの構造を第3図に示す。1は合成樹
脂材により成形されたマウントで、偏平な円環形状に形
成されている。1aはレンズ突き当て面で、交換レンズ
(不図示)の基準面を突き当てることにより、レンズか
らフィルム、撮像素子等へのフランジバックを保つよう
にしている。マウント1には、バヨネット爪1bが不図
示部分も含め3か所設けられている。また貫通穴である
ビス穴1cが4か所に設けられ、ビスによってカメラ本
体の構造部材である前板2に固定される。また、レンズ
突き当て面1aよりも所定量段差を持ってツバ1dが外
周に設けられている。The structure of such a mount is shown in FIG. Reference numeral 1 denotes a mount molded from a synthetic resin material, and is formed in a flat annular shape. Reference numeral 1a denotes a lens abutment surface, which abuts against a reference surface of an interchangeable lens (not shown) to maintain flange back from the lens to the film, image sensor, etc. The mount 1 is provided with three bayonet claws 1b including a portion not shown. Further, screw holes 1c, which are through holes, are provided at four locations, and are fixed to the front plate 2, which is a structural member of the camera body, with screws. Further, a flange 1d is provided on the outer periphery with a predetermined level difference from the lens abutting surface 1a.
第4図は第3図のAAて示す断面で、ビス穴1cの構造
を説明する。3は交換レンズ側のマウントで、マウント
1の突き当て面1aに突き当たる基準面3aを有し、ま
たバヨネット爪1bに係合する爪部3bを有する。バヨ
ネット爪1bとレンズマウント3の爪3bとの間には隙
間があるが、この断面にあられされないところで不図示
の板バネによりレンズマウント3の爪3bが図中右方向
に付勢され、突き当て面1aとレンズ基準面3aが突き
当たっていることを保証する。4は外観を形成するカバ
ーであり、マウント1のツバ1dとオーバーラツプする
ことで、マウント1とカバー4の隙間から中が見えるこ
とを防いでいる。マウント1のビス穴1cは、ビスのネ
ジ部と遊嵌合する小径部と、大径部があり、該大径部内
にビス類かもぐり込むことで、ビス類が、レンズ基準面
3aと突き当て面1aの突き当てのしやまにならないよ
うにしている。FIG. 4 is a cross section shown at AA in FIG. 3, and the structure of the screw hole 1c will be explained. Reference numeral 3 denotes a mount on the interchangeable lens side, which has a reference surface 3a that abuts against the abutment surface 1a of the mount 1, and a claw portion 3b that engages with the bayonet claw 1b. Although there is a gap between the bayonet claw 1b and the claw 3b of the lens mount 3, the claw 3b of the lens mount 3 is biased to the right in the figure by a leaf spring (not shown) in a place where this cross section is not blocked. It is ensured that the surface 1a and the lens reference surface 3a are in contact with each other. Reference numeral 4 denotes a cover that forms the exterior, and by overlapping with the flange 1d of the mount 1, prevents the inside from being seen through the gap between the mount 1 and the cover 4. The screw hole 1c of the mount 1 has a small diameter part that fits loosely with the threaded part of the screw, and a large diameter part, and by inserting the screws into the large diameter part, the screws abut against the lens reference surface 3a. This is done so that the surface 1a does not come into contact with the surface 1a.
[発明が解決しようとする課題]
しかしながら上記した従来例において、カメラマウント
1の前板2への固定は、マウント1に穿設したビス穴I
Cにビスを通してネジ化めする方式であるため、ビスの
頭部とビス穴1cの周囲との接触する面積の少ない部分
でのみマウント1を支持固定することになる。[Problems to be Solved by the Invention] However, in the conventional example described above, the camera mount 1 is fixed to the front plate 2 through the screw hole I drilled in the mount 1.
Since the method is to screw a screw through C, the mount 1 is supported and fixed only in the area where the head of the screw and the periphery of the screw hole 1c have a small contact area.
このため、例えば交換レンズの先端に何かの負荷が加わ
ってしまったような場合、接触面積の少ないビス頭部と
の接触部分に応力集中が生じ、マウント1の他の部分が
充分負荷に耐えられる状況にあっても、マウント1が合
成樹脂製であることから、これら応力集中部分に変形、
割れ等が発生する虞があった。For this reason, for example, if some load is applied to the tip of an interchangeable lens, stress will be concentrated at the contact area with the screw head, which has a small contact area, and the other parts of the mount 1 will not be able to withstand the load sufficiently. Even in situations where mount 1 is made of synthetic resin, these stress-concentrating parts may deform or
There was a risk that cracks would occur.
本発明の目的は、このような従来の問題を解決し、マウ
ント固定用のビスによる応力集中を防ぎ、合成樹脂製の
マウントであっても、充分な強度をもってカメラ等の光
学機器本体に固定することができるマウント取り付は構
造を有する光学機器を提供することにある。The purpose of the present invention is to solve such conventional problems, prevent stress concentration caused by screws for fixing the mount, and fix the mount to the main body of an optical device such as a camera with sufficient strength even if the mount is made of synthetic resin. A possible mount attachment is to provide an optical device with a structure.
[課題を解決するための手段]
本発明の目的を実現するための構成は、平坦な前端面を
他の光学機器の突き当て面とし、周部にツバ部を有する
と共に、厚み方向に貫通するビス穴を周方向に複数設け
た略円環形状に形成された樹脂製のマウントを、該複数
のビス穴を通したビスにより本体に固定する光学機器に
おいて、該マウントのツバ部は、ビス穴に対応してその
周辺部分を径方向あるいは肉厚方向において他の部分よ
りも大きくしたことを特徴とするものである。[Means for Solving the Problems] In order to achieve the object of the present invention, the structure is such that the flat front end surface is used as the abutment surface of another optical device, has a flange portion on the periphery, and penetrates in the thickness direction. In an optical device in which a resin mount formed in a substantially annular shape with a plurality of screw holes in the circumferential direction is fixed to the main body with screws passing through the plurality of screw holes, the flange of the mount has a plurality of screw holes. In response to this, the peripheral portion is made larger than other portions in the radial direction or thickness direction.
[作 用]
上記した構成の光学機器は、ビス穴周辺におけるツバ部
の径方向長さや、肉厚を部分的に大きくすることにより
、過剰な負荷がビス穴周辺に加わっても、充分な強度を
有する。[Function] By partially increasing the radial length and wall thickness of the brim around the screw hole, the optical device with the above configuration has sufficient strength even when an excessive load is applied around the screw hole. has.
[実 施 例コ
第1図は本発明をカメラに適用した実施例をポす。なお
本実施例において、第3図及び第4図において、従来例
で示した部材と同一の部材には同じ符号を付してその説
明は省略する。[Embodiment] Figure 1 shows an embodiment in which the present invention is applied to a camera. In this embodiment, in FIGS. 3 and 4, the same members as those shown in the conventional example are given the same reference numerals, and the explanation thereof will be omitted.
本実施例は、マウント1におけるツバ部1dのうち、マ
ウント1に穿設したビス穴1cの周辺部分1eの径方向
長さを長くし、ビス穴10周辺の軸方向における断面積
を大きくしている。In this embodiment, in the collar portion 1d of the mount 1, the radial length of the peripheral portion 1e of the screw hole 1c drilled in the mount 1 is increased, and the cross-sectional area in the axial direction around the screw hole 10 is increased. There is.
従って、剛性が増し、応力集中も小さくなる。4はマウ
ント周辺のカバーの一般的外形を示すものであるが、マ
ウント1の左右、及び下側には外観カバーとの余裕がな
く、また上側は一般的にペンタプリズムがあるため゛、
やはりツバの肉を増す余裕がない。図中48は交換レン
ズをカメラからはずすときにマウントに対し回転方向に
ロックしているレンズロックを解除するためのロック解
除ボタンであるが、操作性、及び機構上、マウントに近
い所に設けることが望ましい。従って、本実施例におい
ては、マウント1を固定するためのビスの固定位置をマ
ウント中心の上下及び左右位置以外の位置に設定し、そ
の周辺のみのツバ部を拡大することで、カメラの大きさ
及び機構配置へ弊害を及ぼさないよにしている。Therefore, rigidity is increased and stress concentration is reduced. 4 shows the general outline of the cover around the mount, but there is no space between the outer cover on the left, right, and lower sides of mount 1, and there is generally a pentaprism on the upper side.
After all, I can't afford to add more meat to the brim. In the figure, 48 is a lock release button for releasing the lens lock that is locked in the rotational direction to the mount when removing the interchangeable lens from the camera, but for ease of operation and mechanical reasons, it should be located near the mount. is desirable. Therefore, in this embodiment, the fixing position of the screw for fixing the mount 1 is set to a position other than the vertical and horizontal positions of the center of the mount, and by enlarging only the flange around the mount, the size of the camera can be increased. and the arrangement of the mechanism.
第2図に本発明の他の実施例を示し、本図は第4図に相
当するビス穴の断面図を示す。FIG. 2 shows another embodiment of the present invention, and this figure shows a sectional view of a screw hole corresponding to FIG. 4.
本実施例は、前板2に、マウント1のツバ部1dに対向
し、ビス穴ICの周囲に対応して凹溝2aを形成し、ま
たマウント1のツバ部1dからこの凹溝2aに嵌合する
肉増し部1fを延出している。すなわち、ツバ部1dを
肉増し部1fにより厚み方向に肉増しすることは、同し
体積分マウント径方向に肉増しするよりも、断面二次モ
ーメントはより大きくなるので、剛性を増す効果もより
大きくなる。In this embodiment, a groove 2a is formed in the front plate 2, facing the collar 1d of the mount 1, and corresponding to the periphery of the screw hole IC. A matching thickened portion 1f is extended. In other words, increasing the thickness of the collar portion 1d by increasing the thickness of the flange portion 1f increases the moment of inertia of the area compared to increasing the thickness of the flange portion 1d in the radial direction of the mount by the same volume, so the effect of increasing the rigidity is also greater. growing.
また、カバー4との隙間も、部品公差分たけ隙間を残し
て肉増しするようにすれば、カメラを落下させてしまっ
た場合のように、大きな衝撃を受け、マウント1が前板
2から離れる方向にたわみを発生してしまっても、カバ
ー4かそれ以上のたわみを防止して、破壊に至らないよ
うにする効果もある、。In addition, if the gap between the cover 4 and the cover 4 is increased by leaving a gap equal to the tolerance of the parts, the mount 1 will be separated from the front plate 2 due to a large impact, such as when the camera is dropped. Even if deflection occurs in the direction, it has the effect of preventing cover 4 or more from deflecting and preventing damage.
[発明の効果]
以上説明したように、本発明によれば過剰な負荷に対し
、充分な強度をマウントに持たせることができる。また
、マウントの固定ビス穴の位置をマウント中心の上下左
右以外の位置へ配置することで、カメラ等の光学機器の
大きさ、及び機構配置等は従来のままで良いものである
。[Effects of the Invention] As explained above, according to the present invention, the mount can have sufficient strength against excessive loads. Further, by arranging the fixing screw holes of the mount at positions other than the upper, lower, left, and right sides of the center of the mount, the size of the optical device such as a camera, and the mechanical arrangement can remain the same as before.
第1図は本発明をカメラに通用した一実施例を示す正面
図である。第2図は他の実施例を示す要部断面図、第3
図は従来例を示す分解斜視図、第4図は第3図のAA矢
視断面図である。
1・・・マウント 2・・・前板3・・・
交換レンズのマウント 4・・・カバ一部材第
図
f
第
図FIG. 1 is a front view showing an embodiment in which the present invention is applied to a camera. Fig. 2 is a sectional view of main parts showing another embodiment;
The figure is an exploded perspective view showing a conventional example, and FIG. 4 is a sectional view taken along the line AA in FIG. 3. 1...Mount 2...Front plate 3...
Interchangeable lens mount 4...Cover part Fig. f Fig.
Claims (1)
部にツバ部を有すると共に、厚み方向に貫通するビス穴
を周方向に複数設けた略円環形状に形成された樹脂製の
マウントを、該複数のビス穴を通したビスにより本体に
固定する光学機器において、該マウントのツバ部は、ビ
ス穴に対応してその周辺部分を径方向あるいは肉厚方向
において他の部分よりも大きくしたことを特徴とする光
学機器。 2 請求項1において、複数のビス穴は、マウント中心
の上下方向と左右方向及びその近傍から外れた位置に設
けたことを特徴とする光学機器。[Scope of Claims] 1. The flat front end surface is used as the abutting surface for other optical equipment, and the optical device has a generally annular shape with a collar portion on the periphery and a plurality of screw holes penetrating in the thickness direction in the circumferential direction. In an optical device in which a formed resin mount is fixed to the main body with screws passed through the plurality of screw holes, the flange of the mount extends around the screw holes in the radial or thickness direction. An optical device characterized by having a larger part than other parts. 2. The optical device according to claim 1, wherein the plurality of screw holes are provided at positions away from the center of the mount in the vertical and horizontal directions and in the vicinity thereof.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19977390A JPH0486636A (en) | 1990-07-27 | 1990-07-27 | Optical equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19977390A JPH0486636A (en) | 1990-07-27 | 1990-07-27 | Optical equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0486636A true JPH0486636A (en) | 1992-03-19 |
Family
ID=16413376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19977390A Pending JPH0486636A (en) | 1990-07-27 | 1990-07-27 | Optical equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0486636A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010097093A (en) * | 2008-10-20 | 2010-04-30 | Canon Inc | Camera with camera mount, and method for manufacturing camera mount |
JP2012014202A (en) * | 2011-10-18 | 2012-01-19 | Canon Inc | Method for manufacturing camera mount |
-
1990
- 1990-07-27 JP JP19977390A patent/JPH0486636A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010097093A (en) * | 2008-10-20 | 2010-04-30 | Canon Inc | Camera with camera mount, and method for manufacturing camera mount |
JP2012014202A (en) * | 2011-10-18 | 2012-01-19 | Canon Inc | Method for manufacturing camera mount |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3214493B1 (en) | Lens limiting assembly, camera body, and camera | |
US4017878A (en) | Bayonet mount adapter for a camera | |
JPH04301628A (en) | One-touch attaching and removing type camera accessory | |
US5644441A (en) | Lens mount for TV camera | |
US20190174036A1 (en) | Light receiving apparatus | |
US20120121248A1 (en) | Photographing device and lens device | |
JPH0843909A (en) | Mount apparatus | |
US5097280A (en) | Mounting apparatus of lens accessory | |
JPH0486636A (en) | Optical equipment | |
US5625853A (en) | Mounting device for mounting a lens barrel to a support structure and having multiple positions for connecting to the support structure | |
JP3340483B2 (en) | Lens center adjustment device for lens barrel | |
JPH0125270B2 (en) | ||
US5264887A (en) | Camera | |
JP2010243634A (en) | Image capturing apparatus | |
JP2000029116A (en) | Lens mount | |
JPH0627520A (en) | Optical equipment | |
JPH11295579A (en) | Lens device, camera and scope | |
US20240219816A1 (en) | Light receiving apparatus | |
JP2007110472A (en) | Device for mounting monitoring camera, and monitoring camera system | |
JPS6211330B2 (en) | ||
JPH07114088A (en) | Mounting structure for camera | |
JPH11149119A (en) | Bayonet type mount adaptor | |
JP3062957B2 (en) | Camera mount lock device | |
JPH0990489A (en) | Lens attaching device for image pickup device | |
JP2503557Y2 (en) | Eyepiece device |