JP2580858Y2 - Photo-interrupter - Google Patents
Photo-interrupterInfo
- Publication number
- JP2580858Y2 JP2580858Y2 JP8346192U JP8346192U JP2580858Y2 JP 2580858 Y2 JP2580858 Y2 JP 2580858Y2 JP 8346192 U JP8346192 U JP 8346192U JP 8346192 U JP8346192 U JP 8346192U JP 2580858 Y2 JP2580858 Y2 JP 2580858Y2
- Authority
- JP
- Japan
- Prior art keywords
- retaining piece
- mounting hole
- elements
- light
- case
- 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 - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野】本考案は、物体の接近や通過を光
学的に検出するフォトインタラプタに係り、特には、こ
れに組み込まれる発光素子および受光素子のケースへの
固定構造の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photo-interrupter for optically detecting the approach or passage of an object, and more particularly to an improvement in a structure for fixing a light-emitting element and a light-receiving element incorporated therein to a case.
【０００２】[0002]
【従来の技術】フォトインタラプタにおける素子の固定
構造としては、ケースの装着穴に挿入した素子を接着剤
で固定する手段や、図３に示すように、発光素子２と受
光素子３とをケース１に形成した装着穴６に下方より挿
入し、この装着穴６の側壁に内外に弾性変形可能な抜け
止め片９を素子挿入方向に向けて片持ち状に形成し、装
着穴６に挿入された素子２，３を前記抜け止め片９の遊
端で係止して、素子２，３の装着穴６からの抜け出しを
阻止する手段（実開平２−８１５７号公報参照）、が知
られている。2. Description of the Related Art As a structure for fixing an element in a photointerrupter, a means for fixing an element inserted into a mounting hole of a case with an adhesive, or a light emitting element 2 and a light receiving element 3 as shown in FIG. Is inserted into the mounting hole 6 formed from below, and a retaining piece 9 that is elastically deformable inside and outside is formed on the side wall of the mounting hole 6 in a cantilever shape in the element insertion direction, and is inserted into the mounting hole 6. Means for locking the elements 2 and 3 at the free ends of the retaining pieces 9 to prevent the elements 2 and 3 from coming out of the mounting hole 6 (see Japanese Utility Model Laid-Open No. 2-8157) is known. .
【０００３】[0003]
【考案が解決しようとする課題】前者の接着固定手段
は、ケースの装着穴に素子を挿入した後に、ディスペン
サーなどで接着剤を注入して乾燥させる必要があるため
に、工数が多く、組立てに時間がかかり、コスト高にな
る欠点がある。また、接着不良が発生すると簡単に素子
が抜けてしまう不具合があった。In the former adhesive fixing means, it is necessary to inject an adhesive with a dispenser or the like and dry it after inserting the element into the mounting hole of the case. There is a disadvantage that it takes time and costs are high. Further, there is a problem that the element easily comes off when an adhesion failure occurs.
【０００４】これに対し、後者の係止手段は、ケース１
の装着穴６に素子２，３を挿入するだけでよいために、
組立作業性がよくコスト低減には有効であるが、片持ち
状の抜け止め片９が内外に自由に変形できる状態であっ
たために組み付け後の素子支持機能の点で次のような難
点があった。On the other hand, the latter locking means is a case 1
Since it is only necessary to insert the elements 2 and 3 into the mounting holes 6 of
Although the assembling workability is good and effective for cost reduction, since the cantilever retaining piece 9 can be freely deformed in and out, there are the following difficulties in terms of the element supporting function after assembling. Was.
【０００５】つまり、素子２，３の下面と抜け止め片９
の係合位置が、抜け止め片９の基部から装着穴内方に偏
位しているために、組立てられた素子２，３に抜け出し
方向の力が作用した場合、抜け止め片９には内方への曲
げモーメントが働いて大きく変形されてしまい、素子
２，３が上下方向に大きくガタついたり、時には抜け止
め片９が折れて素子２，３が抜け出てしまうおそれがあ
った。なお、抜け止め片９の曲げ強度を高くすればこの
ような不具合は減少できるのであるが、素子挿入時の抵
抗が大きくなって組み付け難くなる問題が生じるもので
あり、抜け止め片９の強度を高めるにも限界があった。That is, the lower surfaces of the elements 2 and 3 and the retaining pieces 9
Is displaced inward from the base of the retaining piece 9 when the force in the removing direction acts on the assembled elements 2 and 3. The element 2 and 3 may be largely deformed due to a bending moment acting on the element, and the elements 2 and 3 may be largely loosened in the vertical direction, or the retaining piece 9 may be broken and the elements 2 and 3 may come off. It should be noted that such a problem can be reduced by increasing the bending strength of the retaining piece 9, but there is a problem that the resistance at the time of element insertion becomes large and it becomes difficult to assemble, and the strength of the retaining piece 9 is reduced. There was a limit to raising.
【０００６】本考案は、このような点に着目してなされ
たものであって、上記した係合手段の利点を生かしなが
ら、従来係合手段に見られた不具合を解消することを目
的とするものである。The present invention has been made in view of such a point, and it is an object of the present invention to eliminate the disadvantages of the conventional engaging means while utilizing the advantages of the above-mentioned engaging means. Things.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本考案は次のような構成をとる。In order to achieve the above object, the present invention has the following configuration.
【０００８】つまり、被検出物通路を隔てて対向する発
光素子と受光素子とをケースに形成した装着穴に挿入
し、この装着穴の側壁に内外に弾性変形可能な抜け止め
片を素子挿入方向に向けて片持ち状に形成し、装着穴に
挿入された素子を前記抜け止め片の遊端で係止して、素
子の装着穴からの抜け出しを阻止するように構成してあ
るフォトインタラプタにおいて、前記抜け止め片の遊端
に係合部を形成し、この係合部を素子の後端角部に後方
および外側方より係合させるよう構成してある。That is, a light-emitting element and a light-receiving element which are opposed to each other across the passage of the object to be detected are inserted into a mounting hole formed in a case, and a retaining piece which can be elastically deformed inward and outward is inserted into a side wall of the mounting hole in the element insertion direction. The photointerrupter is formed in a cantilever shape, and is configured to lock the element inserted into the mounting hole with the free end of the retaining piece to prevent the element from coming out of the mounting hole. An engaging portion is formed at the free end of the retaining piece, and the engaging portion is configured to engage the rear end corner of the element from the rear and the outside.
【０００９】[0009]
【作用】上記構成によると、素子組み付けに際しては、
素子をケースに形成した装着穴に押し込むことで、片持
ち状の抜け止め片は素子に押圧されて外方に弾性変形
し、素子が装着穴の奥まで入ったところで素子との押圧
が解除された抜け止め片が内方に弾性復元して、その遊
端の係合部が素子の後端角部に係合し、もって素子の抜
け止めがなされる。According to the above construction, when assembling the element,
By pushing the element into the mounting hole formed in the case, the cantilevered retaining piece is pressed by the element and elastically deforms outward, and when the element enters the depth of the mounting hole, the pressing with the element is released. The retaining piece resiliently recovers inward, and the engaging portion of the free end engages with the rear end corner of the element, whereby the element is prevented from falling off.
【００１０】この場合、組み付け後の素子に抜け出し方
向の外力が作用すると、素子の後面と抜け止め片の係合
位置が、抜け止め片の基部から装着穴内方に偏位してい
るために、抜け止め片には内方への曲げモーメントが働
いて変形されようとするが、素子の後端角部に外側方か
らも係合している抜け止め片は一定量以上は内方へ変形
されることはなく、素子のガタツキは最小限度で抑えら
れるとともに、抜け止め片自体の大きい変形による折損
も発生することがない。In this case, when an external force in the detaching direction acts on the assembled element, the engagement position between the rear surface of the element and the retaining piece is deviated from the base of the retaining piece to the inside of the mounting hole. The retaining piece is deformed by the inward bending moment, but the retaining piece engaged from the outside at the rear corner of the element is deformed inward by a certain amount or more. Therefore, rattling of the element is suppressed to a minimum, and breakage due to large deformation of the retaining piece itself does not occur.
【００１１】[0011]
【実施例】図１および図２に、本考案に係るフォトイン
タラプタの一実施例が示されている。このフォトインタ
ラプタは、ケース１に発光素子２および受光素子３を下
方より挿入装着して、各素子２，３のリード端子４をケ
ース１より導出して構成されている。1 and 2 show an embodiment of a photointerrupter according to the present invention. This photointerrupter is configured by inserting a light emitting element 2 and a light receiving element 3 into a case 1 from below and mounting the lead terminals 4 of the elements 2 and 3 from the case 1.
【００１２】前記ケース１は、中間に被検出物通路５を
有する正面形状がＵ字形に樹脂形成され、被検出物通路
５の両側に各素子２，３を下方より挿入する装着穴６が
設けられている。被検出物通路５を挟んで対向する壁面
には光通過用のスリット７が形成されるとともに、各装
着穴６の上端部には、挿入された発光素子２および受光
素子３の上端を受け止める突起８が形成され、かつ、各
装着穴６の外側壁には、挿入された発光素子２および受
光素子３を下方から受け止める抜け止め片９が設けられ
ている。The case 1 has a U-shaped resin-formed front surface having an object passage 5 in the middle, and mounting holes 6 for inserting the elements 2 and 3 from below on both sides of the object passage 5. Have been. A slit 7 for light passage is formed on a wall facing the object passage 5 and a projection for receiving an upper end of the inserted light emitting element 2 and light receiving element 3 is provided at an upper end of each mounting hole 6. 8 are formed, and a retaining piece 9 for receiving the inserted light emitting element 2 and light receiving element 3 from below is provided on the outer wall of each mounting hole 6.
【００１３】この抜け止め片９は、素子挿入方向（上
方）に向けて片持ち状に形成され、その遊端には、上向
き係合面Ｓａと内向き係合面Ｓｂとを備えた鉤形の係合
部１０が形成されており、上向き係合面Ｓａが素子下端
角部の下面に係合し、内向き係合面Ｓｂが素子下端角部
の外面に係合するように構成されている。The retaining piece 9 is formed in a cantilever shape in the element insertion direction (upward), and has a hook-shaped free end provided with an upwardly engaging surface Sa and an inwardly engaging surface Sb. Are formed such that the upward engaging surface Sa engages the lower surface of the lower end corner of the element, and the inward engaging surface Sb engages the outer surface of the lower end corner of the element. I have.
【００１４】素子組み付けに際しては、各素子２，３を
装着穴６に下方から圧入することで、素子２，３に押圧
された抜け止め片９が外方に弾性変形され、各素子２，
３が突起８に当接するまで挿入されると、素子２，３と
の押圧が解除された抜け止め片９がもとの姿勢に弾性復
帰し、鉤形の係合部１０が各素子２，３の下端角部に係
合して、各素子２，３の抜け止めがなされる。At the time of assembling the elements, the retaining pieces 9 pressed by the elements 2 and 3 are elastically deformed outward by press-fitting the elements 2 and 3 into the mounting holes 6 from below.
When the element 3 is inserted until it comes into contact with the projection 8, the retaining piece 9 released from the pressing with the elements 2 and 3 elastically returns to its original position, and the hook-shaped engaging portion 10 3 is engaged with the lower end corner, and the elements 2 and 3 are prevented from coming off.
【００１５】そして、このようにしてケース１に組み付
けられた素子２，３に抜け出し方向（下方）の外力が作
用して抜け止め片９が内方に変形されようとしても、係
合部１０の内向き係合面Ｓｂが素子下端角部の外面に係
合して、その内方への変形が規制され、抜け止め片９が
大きく内方に変形されたり、折損するようなことがなく
なる。Then, even if an external force in the pull-out direction (downward) acts on the elements 2 and 3 assembled in the case 1 in this way, and the retaining piece 9 is deformed inward, the engaging portion 10 is The inward engaging surface Sb is engaged with the outer surface of the lower end corner of the element, and the inward deformation is restricted, so that the retaining piece 9 is not largely deformed inward or broken.
【００１６】[0016]
【考案の効果】以上説明したように、本考案によれば、
抜け止め片遊端の係合部に簡単な改良を加えることで、
挿入した素子に抜け出し方向の外力が不当に作用して
も、抜け止め片の大きい変形を阻止して、素子のガタツ
キや抜け止め片の折損を防止することができるようにな
った。[Effects of the Invention] As described above, according to the present invention,
By making a simple improvement to the engaging part of the retaining piece free end,
Even if an external force in the pull-out direction acts improperly on the inserted element, large deformation of the retaining piece is prevented, and rattling of the element and breakage of the retaining piece can be prevented.
【００１７】その結果、抜け止め片自体の強度を特に高
くしなくても、素子を十分な支持強度でもってケースに
装着することが可能になるとともに、素子挿入を比較的
抵抗少なく簡単容易に行うことができ、この種の係合支
持手段の利点である組み付け性の良いことを生かしなが
ら、従来欠点を解消した実用上有利なフォトインタラプ
タを構成することができた。As a result, the element can be mounted on the case with sufficient supporting strength without particularly increasing the strength of the retaining piece itself, and the element can be easily inserted with relatively little resistance. Thus, a practically advantageous photointerrupter, which has solved the conventional disadvantages, could be constructed while taking advantage of the good assemblability, which is the advantage of this type of engagement support means.
【図１】本考案に係るフォトインタラプタの縦断正面図FIG. 1 is a vertical front view of a photo interrupter according to the present invention.
【図２】分解斜視図FIG. 2 is an exploded perspective view.
【図３】従来例の縦断正面図FIG. 3 is a longitudinal sectional front view of a conventional example.
１ ケース ２ 発光素子 ３ 受光素子 ６ 装着穴 ９ 抜け止め片 １０ 係合部 Ｓａ 上向き係合面 Ｓｂ 内向き係合面 DESCRIPTION OF SYMBOLS 1 Case 2 Light emitting element 3 Light receiving element 6 Mounting hole 9 Retaining piece 10 Engaging part Sa Upward engaging surface Sb Inward engaging surface
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) H01L 31/12 H01L 31/10 H01L 33/00──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) H01L 31/12 H01L 31/10 H01L 33/00
Claims (1)
と受光素子とをケースに形成した装着穴に下方より挿入
し、この装着穴の側壁に内外に弾性変形可能な抜け止め
片を素子挿入方向に向けて片持ち状に形成し、装着穴に
挿入された素子を前記抜け止め片の遊端で係止して、素
子の装着穴からの抜け出しを阻止するように構成してあ
るフォトインタラプタであって、 前記抜け止め片の遊端に上向き係合面と内向き係合面と
を有する係合部を形成し、挿入された素子の下端角部に
係合部を下方および外方より係合させるよう構成してあ
ることを特徴とするフォトインタラプタ。1. A light-emitting element and a light-receiving element which are opposed to each other across a passage of an object to be detected are inserted from below into a mounting hole formed in a case, and a retaining piece which is elastically deformable inside and outside is mounted on a side wall of the mounting hole. A photo that is formed in a cantilever shape in the insertion direction and is configured so that the element inserted into the mounting hole is locked by the free end of the retaining piece to prevent the element from coming out of the mounting hole. An interrupter, wherein an engaging portion having an upwardly engaging surface and an inwardly engaging surface is formed at a free end of the retaining piece, and the engaging portions are formed at lower and outer corners at lower end corners of the inserted element. A photointerrupter characterized by being configured to be more engaged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8346192U JP2580858Y2 (en) | 1992-12-03 | 1992-12-03 | Photo-interrupter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8346192U JP2580858Y2 (en) | 1992-12-03 | 1992-12-03 | Photo-interrupter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0650365U JPH0650365U (en) | 1994-07-08 |
| JP2580858Y2 true JP2580858Y2 (en) | 1998-09-17 |
Family
ID=13803106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8346192U Expired - Lifetime JP2580858Y2 (en) | 1992-12-03 | 1992-12-03 | Photo-interrupter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2580858Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100352065C (en) * | 1998-10-02 | 2007-11-28 | 罗姆股份有限公司 | Photointerrupter and case thereof |
| US6677580B1 (en) * | 1999-10-07 | 2004-01-13 | Rohm Co., Ltd. | Photo-interrupter and semiconductor device using it |
| TWI653460B (en) * | 2016-07-07 | 2019-03-11 | 億光電子工業股份有限公司 | Photo-interrupter device and manufacturing method thereof |
-
1992
- 1992-12-03 JP JP8346192U patent/JP2580858Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0650365U (en) | 1994-07-08 |
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