JPS6146926B2 - - Google Patents
Info
- Publication number
- JPS6146926B2 JPS6146926B2 JP12705079A JP12705079A JPS6146926B2 JP S6146926 B2 JPS6146926 B2 JP S6146926B2 JP 12705079 A JP12705079 A JP 12705079A JP 12705079 A JP12705079 A JP 12705079A JP S6146926 B2 JPS6146926 B2 JP S6146926B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- emitting element
- distribution member
- light emitting
- receiving element
- 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
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Description
【発明の詳細な説明】
この発明は動作表示機能を有するリミツトスイ
ツチに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a limit switch having an operation display function.
通常、動作表示を行なう場合には別個に動作表
示用の発光素子が必要である。 Normally, when displaying an operation, a separate light emitting element for displaying the operation is required.
本発明は、１個の発光素子の光をスイツチング
用に用いるとともに動作表示用にも用いるように
して動作表示用の発光素子を不要とするリミツト
スイツチを提供することを目的とする。 SUMMARY OF THE INVENTION An object of the present invention is to provide a limit switch in which light from one light emitting element is used for switching and also for indicating operation, thereby eliminating the need for a light emitting element for indicating operation.
以下、本発明の一実施例について図面を参照し
ながら説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図において、ヘツド部１は回転レバー２に
取付けられた図示しないアクチユエータの動きを
変換する変換機構が収められたものであり、スイ
ツチボツクス１０に取付けられている。端子ボツ
クス４はスイツチボツクス１０とは別体に構成さ
れており、プラグイン構造でシールゴム３を介在
させてシール性を保ちながら結合できるようにな
つている。この端子ボツクス４内には発光素子や
受光素子を含む回路部が内蔵されており、接続端
子６および接続端子６に接続されたケーブルを引
き出すためのコンジエツト部５が設けられてい
る。 In FIG. 1, a head section 1 houses a conversion mechanism for converting the movement of an actuator (not shown) attached to a rotary lever 2, and is attached to a switch box 10. The terminal box 4 is constructed separately from the switch box 10, and has a plug-in structure so that the terminal box 4 can be connected with a seal rubber 3 interposed therebetween while maintaining sealing performance. A circuit section including a light emitting element and a light receiving element is built into the terminal box 4, and a conduit section 5 for pulling out a connecting terminal 6 and a cable connected to the connecting terminal 6 is provided.
スイツチボツクス１０内には第２図に示すよう
な遮光板３０が設けられている。この遮光板３０
はストツパ４１，４２間で回動できるようにヒン
ジ部４３により枢支されている。この遮光板３０
には一端がピン３５に係止されているバネ３２が
取付けられている。ピン３５はレバー３３に取付
けられており、このレバー３３はピン３４によつ
て軸支されている。前記ヘツド部１の変換機構か
らの力がこのレバー３３に加わるようになつてお
り、レバー３３が２点鎖線で示すように回動する
と遮光板３０がスナツプ動作により回動して２点
鎖線の位置に動く。このスイツチボツクス１０に
は更に第３図に示すように光分配部材２０が内蔵
されている。 A light shielding plate 30 as shown in FIG. 2 is provided inside the switch box 10. As shown in FIG. This light shielding plate 30
is pivotally supported by a hinge portion 43 so as to be rotatable between stoppers 41 and 42. This light shielding plate 30
A spring 32 is attached at one end to a pin 35. The pin 35 is attached to a lever 33, and the lever 33 is pivotally supported by a pin 34. The force from the conversion mechanism of the head section 1 is applied to this lever 33, and when the lever 33 rotates as shown by the two-dot chain line, the light shielding plate 30 rotates by a snap action, and the light shielding plate 30 rotates as shown by the two-dot chain line. move into position. The switch box 10 further includes a light distribution member 20 as shown in FIG.
端子ボツクス４には第３図に示すようにLED
（発光ダイオード）などの発光素子８０およびフ
オトトランジスタなどの受光素子７０が取付けら
れ、且つ回路部が実装されたプリント配線基板９
０が納められている。発光素子８０には集光部材
６０が取付けられており、回路部カバー５０に設
けられた穴５１を貫通してこの集光部材６０が突
出している（第１図参照）。また受光素子７０は
回路部カバー５０に設けられた穴５２に臨むよう
に配置されている。この穴５２の裏面側には回路
部カバー５０から延びてきている光コード５３が
形成されている。 Terminal box 4 has an LED as shown in Figure 3.
A printed wiring board 9 on which a light emitting element 80 such as a light emitting diode (light emitting diode) and a light receiving element 70 such as a phototransistor are attached, and on which a circuit section is mounted.
0 is stored. A light condensing member 60 is attached to the light emitting element 80, and the light condensing member 60 protrudes through a hole 51 provided in the circuit section cover 50 (see FIG. 1). Further, the light receiving element 70 is arranged so as to face the hole 52 provided in the circuit section cover 50. An optical cord 53 extending from the circuit section cover 50 is formed on the back side of this hole 52.
スイツチボツクス１０と端子ボツクス４とを結
合すると集光部材６０の突出部がスイツチボツク
スに取付けられているスイツチケース４０の穴４
３に挿入され、且つ光分配部材２０の突出部が回
路部カバー５０の穴５２に挿入される（第３図及
び第４図参照）。 When the switch box 10 and the terminal box 4 are combined, the protrusion of the light condensing member 60 is inserted into the hole 4 of the switch case 40 attached to the switch box.
3, and the protrusion of the light distribution member 20 is inserted into the hole 52 of the circuit section cover 50 (see FIGS. 3 and 4).
こうして結合された状態では発光素子８０の光
は集光部材６０の受光面６８から集光部材６０内
に入り、テーパ部６１で内面反射しながら導かれ
て投光面６３では光束密度が２倍近くになつて光
分配部材２０の受光面２３に向けて投射される。
集光部材６０の投光面６３と光分配部材２０の受
光面２３との間に前記の遮光板３０が位置してい
る。この遮光板３０は通常は実線で示すａの位置
にあり、投光面６３から受光面２３に入射しよう
とする光を遮へいしている。アクチユエータが外
力によつて応動したとき２点鎖線で示すｂの位置
に動いて受光面２３に光が入射する。こうして受
光面２３に入射した光は光分配部材２０内で反射
面２４によつて約90度曲げられ分配用のＶ字型溝
２５の中心へ導かれる。ここで第３図の右半分の
光は表示窓２１に導かれてスイツチボツクス１０
の前面に放射される。左半分の光は投光面２６よ
り発射され受光素子７０に入射する。なお第３図
で１５はＯリングでありスイツチボツクス１０と
のシール性を保つ。受光素子７０に光が入射する
と回路部からスイツチング出力信号が生じる。 In this combined state, the light from the light emitting element 80 enters the light collecting member 60 from the light receiving surface 68 of the light collecting member 60, is guided while being internally reflected by the tapered part 61, and the luminous flux density is doubled at the light projecting surface 63. As the light approaches the light, it is projected toward the light receiving surface 23 of the light distribution member 20.
The light shielding plate 30 is located between the light projecting surface 63 of the light collecting member 60 and the light receiving surface 23 of the light distribution member 20. This light-shielding plate 30 is normally located at a position a shown by a solid line, and blocks light that is about to enter the light-receiving surface 23 from the light-projecting surface 63. When the actuator responds to an external force, it moves to a position b indicated by a two-dot chain line, and light enters the light receiving surface 23. In this way, the light incident on the light receiving surface 23 is bent by about 90 degrees by the reflecting surface 24 within the light distribution member 20 and guided to the center of the V-shaped groove 25 for distribution. Here, the light in the right half of FIG.
radiated to the front of the The left half of the light is emitted from the light projection surface 26 and enters the light receiving element 70. In FIG. 3, reference numeral 15 is an O-ring which maintains a seal with the switchbox 10. When light enters the light receiving element 70, a switching output signal is generated from the circuit section.
この発明によれば、発光素子と、この発光素子
から入射される光を動作表示を行なう表示窓に導
くとともに受光素子に導く光分配部材と、前記発
光素子と光分配部材との間に配置されアクチユエ
ータに応動する応動機構により動作させられて前
記発光素子から光分配部材に入射する光を遮へい
する遮光板と、前記受光素子に対する光の入射に
応じてスイツチング出力信号を生じる回路部とを
設けてあるので、スイツチング出力信号を生じさ
せるための光の一部を表示窓に導いて動作表示用
として利用でき動作表示用の発光素子が不要とな
る。 According to this invention, a light emitting element, a light distribution member that guides light incident from the light emitting element to a display window for displaying an operation display and a light receiving element, and a light distributing member disposed between the light emitting element and the light distributing member. A light shielding plate operated by a response mechanism responsive to an actuator to shield light from the light emitting element entering the light distribution member, and a circuit section generating a switching output signal in response to light incident on the light receiving element. Therefore, a part of the light for generating the switching output signal can be guided to the display window and used for displaying the operation, thereby eliminating the need for a light emitting element for displaying the operation.
第１図は本発明の一実施例の分解斜視図、第２
図は遮光板の付近を拡大して示す概略図、第３図
および第４図は光学系を拡大して示す断面図であ
り、第３図は結合時を示し、第４図は分離時を示
している。
１……ヘツド部、２……回転レバー、３……シ
ールゴム、４……端子ボツクス、５……コンジエ
ツト部、６……接続端子、１０……スイツチボツ
クス、２０……光分配部材、２１……表示窓、３
０……遮光板、４０………スイツチケース、５０
……回路部カバー、６０……集光部材、７０……
受光素子、８０……発光素子。９０……プリント
配線基板。
Fig. 1 is an exploded perspective view of one embodiment of the present invention;
The figure is a schematic enlarged view of the vicinity of the light shielding plate, and Figures 3 and 4 are sectional views of the optical system enlarged. Figure 3 shows the state when combined, and Figure 4 shows the state when separated. It shows. DESCRIPTION OF SYMBOLS 1...Head part, 2... Rotation lever, 3... Seal rubber, 4... Terminal box, 5... Conduit part, 6... Connection terminal, 10... Switch box, 20... Light distribution member, 21... ...Display window, 3
0... Light shielding plate, 40... Switch case, 50
...Circuit part cover, 60...Light condensing member, 70...
Light receiving element, 80... Light emitting element. 90...Printed wiring board.
Claims (1)
を動作表示を行なう表示窓に導くとともに受光素
子に導く光分配部材と、前記発光素子と光分配部
材との間に配置されアクチユエータに応動する応
動機構による動作させられて前記発光素子から光
分配部材に入射する光を遮へいする遮光板と、前
記受光素子に対する光の入射に応じてスイツチン
グ出力信号を生じる回路部とからなるリミツトス
イツチ。 ２ 前記発光素子、受光素子及び回路部を一方の
ケースに収納するとともに他方のケースに前記光
分配部材及び遮光板を配置し、これら両ケースを
結合した時に前記発光素子から前記光分配部材に
光が入射し、且つ前記光分配部材から前記受光素
子に光が入射するようにしたことを特徴とする特
許請求の範囲第１項記載のリミツトスイツチ。[Scope of Claims] 1. A light emitting element, a light distribution member that guides light incident from the light emitting element to a display window for displaying an operation display and to a light receiving element, and disposed between the light emitting element and the light distribution member. a light-shielding plate that is operated by a response mechanism responsive to an actuator to shield light from the light-emitting element and incident on the light distribution member; and a circuit section that generates a switching output signal in response to light incident on the light-receiving element. Limit switch. 2. The light emitting element, light receiving element, and circuit section are housed in one case, and the light distribution member and light shielding plate are arranged in the other case, and when these two cases are combined, light is transmitted from the light emitting element to the light distribution member. 2. The limit switch according to claim 1, wherein the light is incident on the light receiving element from the light distribution member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12705079A JPS5652822A (en) | 1979-10-02 | 1979-10-02 | Limit switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12705079A JPS5652822A (en) | 1979-10-02 | 1979-10-02 | Limit switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5652822A JPS5652822A (en) | 1981-05-12 |
| JPS6146926B2 true JPS6146926B2 (en) | 1986-10-16 |
Family
ID=14950357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12705079A Granted JPS5652822A (en) | 1979-10-02 | 1979-10-02 | Limit switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5652822A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6443012U (en) * | 1987-09-04 | 1989-03-15 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0635329Y2 (en) * | 1987-09-24 | 1994-09-14 | トヨタ自動車株式会社 | Limit switch |
-
1979
- 1979-10-02 JP JP12705079A patent/JPS5652822A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6443012U (en) * | 1987-09-04 | 1989-03-15 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5652822A (en) | 1981-05-12 |
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