JPS6131290Y2 - - Google Patents

Description

【考案の詳細な説明】 本考案は双眼鏡にポロプリズムを取付ける場合
等に用いるポロプリズム取付具に関する。[Detailed Description of the Invention] The present invention relates to a Porro prism mount used when attaching a Porro prism to binoculars.

従来、ポロプリズムを構成するため、直角プリ
ズムをプリズムシートに固定する場合は、直角プ
リズムを取除き、押圧する板ばねの両端をネジで
プリズムシートに取付けていた。このためプリズ
ムシートにタツプ穴を穿設しなければならず、取
付作業も煩雑である。 Conventionally, when fixing a right-angle prism to a prism sheet to form a Porro prism, the right-angle prism was removed and both ends of the leaf spring to be pressed were attached to the prism sheet with screws. For this reason, tapped holes must be made in the prism sheet, and the installation work is also complicated.

また、ペンタプリズムの取付に用いられている
ように、板ばねの端にコイルばねを付加したり、
板ばね自体をゴム等の弾性材製として変形量を大
きくし、その端をプリズムシートに引掛けるよう
にした構造も考えられるが、ポロプリズムでは、
直角プリズムの反射面にミラーコーテイングを施
さないため反射面を空気中に露出させばね等が触
れないようにしなければならないので、この構造
は実用が困難である。 In addition, a coil spring can be added to the end of the leaf spring, as is used to attach a pentaprism,
It is possible to consider a structure in which the leaf spring itself is made of an elastic material such as rubber to increase the amount of deformation, and its end is hooked to the prism sheet, but with a Porro prism,
This structure is difficult to put into practical use because the reflecting surface of the right-angle prism is not coated with a mirror, so the reflecting surface must be exposed to the air and not touched by springs or the like.

さらにポロプリズムには低価格化が強く要請さ
れるので部品点数を極力少なくすることが望まれ
ている。 Furthermore, since there is a strong demand for low-cost Porro prisms, it is desirable to reduce the number of parts as much as possible.

そこで本考案は、簡単な構造で安価に、かつ容
易に製造、組立てをすることのできるポロプリズ
ム取付具を提供しようとするものである。 Therefore, the present invention aims to provide a Porro prism fixture that has a simple structure, is inexpensive, and can be manufactured and assembled easily.

すなわち本考案は、直角プリズムを両面に押当
て嵌合させるプリズムシートの直角プリズム両側
部位置にそれぞれ引掛溝を設け、直角プリズムの
外周を取巻き直角プリズムをプリズムシートに押
付ける板ばねを、略弧状に形成して直角プリズム
の頂点部に接し反射面の外方に膨出するように
し、かつ途中に折曲部を設けて変形量を増大さ
せ、さらに両端にフツクを設けて前記引掛部に掛
合するようにしたポロプリズム取付具である。 That is, in the present invention, hook grooves are provided on both sides of the right-angle prism of the prism sheet that presses and fits the right-angle prism on both sides, and the leaf springs that surround the outer periphery of the right-angle prism and press the right-angle prism against the prism sheet are formed in a substantially arc shape. The prism is formed so that it touches the apex of the rectangular prism and bulges outward from the reflecting surface, and a bent part is provided in the middle to increase the amount of deformation, and hooks are provided at both ends to engage with the hook parts. This is a Porro prism mount.

次に本考案を図示する実施例について説明す
る。図中１はプリズムシートであり、ダイキヤス
ト製品等よりなり、直角プリズム３，３を両面に
押当て嵌合させる。２ａ，２ｂは引掛溝であり、
プリズムシート１の直角プリズム３，３の両側部
位置に設けられる。４，４は板ばねであり、金属
帯片よりなり、全体は略弧状となり、途中に折曲
部Ａを有し、両端にフツク５ａ，５ｂを有してい
る。したがつてこの板ばね４，４は、プリズムシ
ート１に直角プリズム３，３を嵌合させて押当て
ると容易に変形してフツク５ａ，５ｂを引掛部２
ａ，２ｂに引掛けることができ、こうすると板ば
ね４，４は直角プリズム３，３の頂部のみに接し
てプリズムシート１に押付け直角プリズム３，３
をプリズムシート１に固定する。 Next, an embodiment illustrating the present invention will be described. In the figure, reference numeral 1 denotes a prism sheet, which is made of a die-cast product or the like, and has right-angled prisms 3, 3 pressed against both sides thereof. 2a and 2b are hook grooves,
They are provided on both sides of the right angle prisms 3, 3 of the prism sheet 1. Reference numerals 4 and 4 designate leaf springs, which are made of metal strips, have a generally arcuate shape, have a bent part A in the middle, and have hooks 5a and 5b at both ends. Therefore, when the right angle prisms 3, 3 are fitted onto the prism sheet 1 and pressed against each other, the leaf springs 4, 4 are easily deformed and the hooks 5a, 5b are pushed into the hook portions 2.
a, 2b, and in this way, the leaf springs 4, 4 contact only the tops of the right angle prisms 3, 3 and press against the prism sheet 1, and the right angle prisms 3, 3
is fixed to the prism sheet 1.

以上から明らかなように、本考案のポロプリズ
ム取付具では、取付作業は、板ばねの両端のフツ
クをプリズムシートの引掛部に引掛けるだけであ
るので、きわめて容易、迅速であり、またプリズ
ムシートには引掛部を形成するだけであるからそ
の製造も容易である。また板ばねに、引掛操作が
容易にできるように大きな変形量を与えるため、
本考案では、板ばねを略弧状とし折曲部を設けて
いるので、部品点数を増加させることはなく、ま
た直角プリズムの反射面に触れることもなく、安
価に実用化することができる。 As is clear from the above, with the Porro prism mount of the present invention, the installation work is extremely easy and quick because the hooks at both ends of the leaf spring are hooked on the hooks of the prism sheet. Since only the hook portion is formed, the manufacture is easy. In addition, in order to give the leaf spring a large amount of deformation so that it can be easily hooked,
In the present invention, since the leaf spring has a substantially arc shape and a bent portion is provided, the number of parts is not increased, and there is no need to touch the reflective surface of the right angle prism, so that the leaf spring can be put to practical use at low cost.

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

図面は本考案の一実施例を示し、第１図は直角
プリズムとともに示した分解斜視図、第２図はプ
リズムシートの平面図、第３図は直角プリズムを
取付けた状態の正断面図である。 １……プリズムシート、２ａ，２ｂ……引掛
溝、３……直角プリズム、４……板ばね、５ａ，
５ｂ……フツク、Ａ……折曲部。 The drawings show one embodiment of the present invention, in which Fig. 1 is an exploded perspective view showing a right-angle prism, Fig. 2 is a plan view of the prism sheet, and Fig. 3 is a front sectional view of the right-angle prism attached. 1: prism sheet, 2a, 2b: hook groove, 3: right-angle prism, 4: leaf spring, 5a,
5b...hook, A...folded part.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 直角プリズムを両面に押当て嵌合させるプリズ
ムシートの直角プリズム両側部位置にそれぞれ引
掛溝を設け、直角プリズムの外周を取巻き直角プ
リズムをプリズムシートに押付ける板ばねを、略
弧状に形成して直角プリズムの頂点部に接し反射
面の外方に膨出するようにし、かつ途中に折曲部
を設けて変形量を増大させ、さらに両端にフツク
を設けて前記引掛部に掛合するようにしたポロプ
リズム取付具。 A right-angle prism is created by providing hook grooves on both sides of the right-angle prism of the prism sheet, which presses and fits the right-angle prism on both sides, and forming a leaf spring, which wraps around the outer periphery of the right-angle prism and presses the right-angle prism against the prism sheet, into a substantially arc shape. A Porro prism that is in contact with the apex of the prism and bulges outward from the reflective surface, has a bent part in the middle to increase the amount of deformation, and has hooks at both ends to be hooked to the hook parts. Mounting hardware.