JPS5839002A - Electromagnet device for camera - Google Patents

Abstract

PURPOSE:To make close contact of attractive surface by a method wherein, at the junction of fixed yoke and substrate, minor gaps are provided between the external projected surface of substrate and the internal fixing hole of yoke as well as between the surfaces opposite to yoke and screw head. CONSTITUTION:The fixing hole 12b with hole diameter (d) larger than the diameter D of the projection 11b of base plate 11 is provided and the yoke of fixing hole 12b is formed making its wall thickness (h) less than the height H of said projection 11b. The projection 11b of the base plate 11 as the fixing substrate of yoke is inserted into the fixing hole 12b while the yoke and the substrate are fixed together by means of threadingly fixing the screw 15 on the top of projection 11b forming the minor gaps 18 and 19. The yoke, slightly slackned, is chatteringly fixed to the base plate of the substrate with slight allowance in the vertical, lateral and longitudinal directions. When the coil 14 is energized, the attractive surface 13a of the movable lever is attracted to the attractive surface 12a of yoke slightly moving in the chattering range with both attractive surface 12a and 13a contacted closely to each other firmly holding the movable lever on the attracted position so that the camera mechanism connected to said lever may perform the specified operations accurately.

Description

【発明の詳細な説明】 本発明は、固定ヨークと可動レバーとの吸着面が見金に
密着できるように構成したカメラ用電磁石装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electromagnet device for a camera configured so that the adhesion surfaces of a fixed yoke and a movable lever can be brought into close contact with a counter.

従来、カメラ内の各種レバー類の保持、係止のためにヨ
ークとアマチュアを有する電磁石が用いられているが、
ヨークやアマチュアの取付精度、アマチュアを支持する
回動レバーの傾き等によりヨークとアマチュアの吸着面
が密着せず、このためアマチュアを回動レバーに対し若
干のガタが生ずるように装着して、電磁石付勢時にヨー
クの吸着面に対しアマチュアの吸着面が整合し密着する
ようにしていた。すなわち、従来の電磁石装置は、第１
図の斜視図および第２図の断面図に示し念ように１コイ
ル４を巻いたヨーク２を地板１上面の突起１ｂおよびビ
ス５で固定し、一方、地板１と一体の軸１ａに回動レバ
ー６を嵌合しリング９により抜は止めするとともに解放
ばね１０にて付勢し、回動レバー６に植設した軸７に対
し、該軸の径よりも大径の嵌挿穴を有するアマチュア３
を嵌挿してワッシャ８によシ抜は止めして取シ付けてお
り、これによりアマチュア３は回動レバー６に対し若干
のガタが生ずるように取り付けられ、ヨーク２や回動レ
バー支持軸１ａの取付精度が悪く傾いていてもアマチュ
アの吸着面がヨークに密着できるように構成してい念、
シかし表から、このような従来の構成では、アマチュア
と回動レバーとを分離して別体に製作しなければならず
、かつガタを設けて組立てるために、部品数が増え、組
立に手数を要し、コスト高になるという欠点がありた・ 本発明は、前述の点に鑑みなされたもので、従来のよう
な製作部品数、組立手数、コスト上の欠点のないカメラ
用電磁石装置を提供することを目的とし、このため、本
発明は、固定ヨークと基体との取付結合部に微小間隙を
形成してヨークを上下、左右、前後に微動可能に取シ付
け、可動し・ぐ−には田−りに吸着される吸着面を設け
たことを特徴とするものであり、さらにまた、ヨークと
基体との取付結合部における基体の突起外面とヨークの
取付穴内面との間、および、ヨークとビス頭部の対向す
る面の間に、微小間隙を形成したものである。これによ
って本発明は、可動レバー自体をアマチュアとして使用
できるので製作部品数が少くなり、ヨークは若干のガタ
を有して取り付けられるので部品の取付精度を極度に厳
密にしなくても吸着面を完全に密着させることが可能と
なり、組立作業に手数を要せず、コストを低下させるこ
とができるようにしたものである。Conventionally, electromagnets with a yoke and an armature have been used to hold and lock various levers inside the camera.
Due to the mounting accuracy of the yoke and armature, the inclination of the rotating lever that supports the armature, etc., the attraction surfaces of the yoke and armature do not come into close contact with each other. At the time of biasing, the suction surface of the armature was aligned with the suction surface of the yoke and brought into close contact. That is, the conventional electromagnetic device
As shown in the perspective view in the figure and the cross-sectional view in FIG. The lever 6 is fitted into the shaft 7, which is prevented from being removed by a ring 9 and biased by a release spring 10, and which has a fitting hole with a diameter larger than that of the shaft 7 implanted in the rotary lever 6. amateur 3
The armature 3 is installed with a washer 8 to prevent it from being removed, and the armature 3 is installed with a slight play against the rotating lever 6, and the yoke 2 and the rotating lever support shaft 1a Even if the mounting accuracy is poor and the armature is tilted, please make sure that the suction surface of the armature is configured so that it can come into close contact with the yoke.
From the table, it can be seen that in such a conventional configuration, the armature and rotating lever must be separated and manufactured separately, and because they are assembled with play, the number of parts increases and the assembly process is complicated. The present invention has been made in view of the above points, and provides an electromagnet device for cameras that does not have the drawbacks of the conventional manufacturing parts, assembly time, and cost. For this purpose, the present invention forms a small gap at the attachment joint between the fixed yoke and the base body, and mounts the yoke so that it can move slightly up and down, left and right, and back and forth. - is characterized by being provided with an adsorption surface that is adsorbed to the rice pad, and furthermore, between the outer surface of the protrusion of the base and the inner surface of the mounting hole of the yoke at the attachment joint portion of the yoke and the base, Also, a minute gap is formed between the opposing surfaces of the yoke and the screw head. As a result, the present invention allows the movable lever itself to be used as an armature, reducing the number of manufactured parts, and since the yoke can be installed with some play, the suction surface can be completely fixed without having to be extremely precise in installing the parts. This makes it possible to bring the parts into close contact with each other, which eliminates the need for assembly work and reduces costs.

以下、本発明の実施例について図面により説明する。Embodiments of the present invention will be described below with reference to the drawings.

第３図は本発明のカメラ用電磁石の斜視図、第４図はそ
の断面を示した図であり、同図において、１ｉＦｉ地板
であってヨークと可動レバーを取り付けるべき基体とな
るものであシ、該地板には一体に軸１１ｍおよび突起１
１ｂを立設する。Fig. 3 is a perspective view of the camera electromagnet of the present invention, and Fig. 4 is a cross-sectional view of the electromagnet. , the base plate is integrally equipped with a shaft 11m and a protrusion 1.
1b is erected.

１３１１を可動レバーであり、吸着面１３ｍを形成する
とともにコ字形枢支部１３ｂを設け、このコ字形枢支部
１３ｂを前記地板の軸１１１に回動自在に嵌合し、抜は
止めリング１６を骸軸に嵌着して可動レバー１３が軸か
ら抜は出ないようにし、また、可動レバー１３には、解
放バネ１７の一端を掛止し、さらに図示を省略しである
がカメラ機構の部材を連結する。Reference numeral 1311 is a movable lever which forms a suction surface 13m and is provided with a U-shaped pivot 13b, which is rotatably fitted onto the shaft 111 of the base plate, and the retaining ring 16 is fitted onto the base plate. The movable lever 13 is fitted onto the shaft to prevent it from coming out from the shaft, and one end of the release spring 17 is hooked to the movable lever 13, and furthermore, although not shown, members of the camera mechanism are attached to the movable lever 13. Link.

１２けコイル１４を巻装した固定ヨークであり、先端に
吸着面１２ｍを形成し、また、前記地板の〜”−＝ａ’
ｈ。It is a fixed yoke with a 12-piece coil 14 wound around it, and has a suction surface of 12 m at its tip, and ~"-=a' of the base plate.
h.

突起１１ｂの径りよりも若干大なる穴　　　有す−る取
付穴１２ｂを設けるとともに、該取付穴部分のヨークの
肉厚りを前記突起１１ｂの高さＨよりも小に形成する。A mounting hole 12b having a diameter slightly larger than the diameter of the projection 11b is provided, and the thickness of the yoke at the mounting hole portion is made smaller than the height H of the projection 11b.

この取付穴３２ｂｔ−ヨークの取付基体である地板１１
の突起１１ｂに嵌合し該突起上端にビス１５を螺着して
ヨークと基体とを取り付は結合する。このような取付結
合部は、ヨークの取付穴１２ｂの内周面と突起１１ｂの
外周面との間に微小間隙１８が形成されることになり、
ヨークの上面とビス１５の頭部下面との間にも微小間隙
１９が形成されるので、ヨークは若干のガタを有して基
体の地板に対し、上下、左右、前後に若干の自由度をも
って微動可能に取り付けられることになる。なお、ヨー
クの吸着面１２ｍは可動マパーの吸着面１３ｍに対向さ
せる。This mounting hole 32bt - the base plate 11 which is the mounting base of the yoke
The yoke and the base body are attached and connected by fitting into the protrusion 11b and screwing the screw 15 onto the upper end of the protrusion. In such a mounting joint, a minute gap 18 is formed between the inner peripheral surface of the mounting hole 12b of the yoke and the outer peripheral surface of the protrusion 11b.
Since a minute gap 19 is also formed between the upper surface of the yoke and the lower surface of the head of the screw 15, the yoke has a slight play and can be moved vertically, horizontally, and forward/backward with a slight degree of freedom with respect to the base plate of the base body. It will be installed so that it can be moved slightly. Note that the suction surface 12m of the yoke is opposed to the suction surface 13m of the movable mapper.

昨述のように構成した本発明のカメラ用電磁石装置は、
コイル１４が付勢されると可動レバーの吸着面１３轟は
ヨークの吸着面１２ｍに吸着され、このときヨーク１２
＃′ｉ、その吸着面１２ｍが可動レバーの吸着面１３１
に完全に密着するように、上下、左右、前後の微動可能
範囲内で若干動き、これによって画成着面は完全に密着
して可動レバーが吸着位置く適確に保持され、′可動レ
バーに連結されたカメラ機構部材が所定の動作を確実に
行なうのである。The camera electromagnet device of the present invention configured as described above has the following features:
When the coil 14 is energized, the attraction surface 13 of the movable lever is attracted to the attraction surface 12m of the yoke, and at this time the yoke 12
#'i, the suction surface 12m is the suction surface 131 of the movable lever
In order to completely contact the movable lever, it moves slightly within the range of fine movement up and down, left and right, and front and back. The connected camera mechanism members reliably perform predetermined operations.

以上説明し次ように本発明によれば、ヨークと基体との
取付結合部においてヨークの取付穴１２ｂが微小間隙を
有しかつヨーク上面にもビス頭部下面との間に微小間隙
を有するので、ヨークは上下、左右、前後に若干の自由
度をもって微動可能であり、したが９て、地板１１上に
立設した軸１１ａや突起１１ｂに若干の傾きがあったり
可動レバーの吸着面１３ｍが完全に垂直な面に置かれて
いない場合であっても、田−りはその吸着面１２ｍが可
動レバーの吸着面１３ｍに整合密着するように動くこと
ができるので各部材の製作組立に特に厳密な精度を要す
ることなしに確実にカメラ機構を動作させることができ
、また、可動レバー１３に吸着面１３ｍを形成したので
別個にアマチュアを製作する必要がなく、部品数が少く
なシ、組立作業に手数を要せず、コストを低減すること
ができるという顕著な効果を奏するものである。As described above, according to the present invention, the mounting hole 12b of the yoke has a small gap at the mounting joint between the yoke and the base, and the top surface of the yoke also has a small gap between the bottom surface of the screw head. The yoke can be slightly moved up and down, left and right, and front and rear with some degree of freedom. Even if it is not placed on a completely vertical surface, the rice pad can move so that its suction surface 12m aligns closely with the suction surface 13m of the movable lever, so it is especially difficult to manufacture and assemble each part. The camera mechanism can be operated reliably without requiring great precision, and since the movable lever 13 has a suction surface of 13m, there is no need to manufacture a separate armature, the number of parts is small, and assembly work is easy. This method has the remarkable effect of reducing costs without requiring much effort.

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

第１図は従来の電磁石装置の斜視図、第２図はその一部
断面図、第３図は本発明のカメラ用電磁石装置の斜視図
、第４図はその一部断面図である。 １１・・・基体　　　　　　１１ｂ・・・突起１２・・
・ヨーク　　　　　１２ｍ・・・ヨーク吸着面１２ｂ・
・・取付穴　　　　　１３・・・可動レバー１３ｍ・・
・可動レバー吸着面１４・・・コイル１５・・・ビス　
　　　　　１８・・・微小間隙１９・・・微小間隙FIG. 1 is a perspective view of a conventional electromagnet device, FIG. 2 is a partially sectional view thereof, FIG. 3 is a perspective view of an electromagnet device for a camera according to the present invention, and FIG. 4 is a partially sectional view thereof. 11...Base 11b...Protrusion 12...
・Yoke 12m...Yoke suction surface 12b・
...Mounting hole 13...Movable lever 13m...
・Movable lever adsorption surface 14...coil 15...screw
18...Minute gap 19...Minute gap

Claims (2)

【特許請求の範囲】[Claims] （１）　　コイルを巻装した固定ヨークと、ヨークに吸
着される可動レノ々−と、ヨークおよび可動レバーを取
り付ける基体とを具備する電磁石装置において、ヨーク
と基体との取付結合部に微小間隙を形成してヨークを上
下、左右、前後に微動可能に取り付け、可動レバーには
ヨークに吸着される吸着面を設けたことを特徴とするカ
メラ用電磁石装置。(1) In an electromagnet device that includes a fixed yoke wrapped with a coil, movable levers that are attracted to the yoke, and a base body to which the yoke and movable lever are attached, a minute gap is created at the attachment joint between the yoke and the base body. An electromagnetic device for a camera, characterized in that a yoke is attached so as to be able to move slightly up and down, left and right, and front and back, and a movable lever is provided with an adsorption surface that is adsorbed to the yoke. （２）基体に突設した突起にヨークの取付穴を嵌合し突
起上端にビスを装着したヨークと基体との取付結合部の
、該突起外面と取付穴内面との間、微小間隙を形成した
特許請求の範囲第１項記載のカメラ用電磁石装置・(2) A small gap is formed between the outer surface of the protrusion and the inner surface of the mounting hole at the attachment joint between the yoke and the base, where the protrusion protruding from the base is fitted into the mounting hole of the yoke and a screw is attached to the upper end of the protrusion. The electromagnet device for a camera according to claim 1