JPS623638U - - Google Patents
Info
- Publication number
- JPS623638U JPS623638U JP9253085U JP9253085U JPS623638U JP S623638 U JPS623638 U JP S623638U JP 9253085 U JP9253085 U JP 9253085U JP 9253085 U JP9253085 U JP 9253085U JP S623638 U JPS623638 U JP S623638U
- Authority
- JP
- Japan
- Prior art keywords
- reel disk
- reflective
- annular groove
- circumferential direction
- circular sheet
- 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
Landscapes
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Description
第１図及び第２図は夫々本考案になるリールデ
イスクの一実施例の縦断面図及び底面図、第３図
は非反射部が受発光素子組体立に対向したときの
光の反射の状況を説明する図、第４図及び第５図
は夫々従来のリールデイスクの各例の底面図、第
６図は第５図中―線に沿つて断面して展開し
て示す図である。
１０……リールデイスク、１５……受発光素子
ユニツト、１８……偏平凹部、１９……環状溝、
１９ａ……傾斜底面、２０……円形シート、２０
ａ……スリツト、２０ｂ……反射部、２０ｃ……
内周環状部、２０ｄ……外周環状部、２１……非
反射部。
1 and 2 are a vertical sectional view and a bottom view, respectively, of an embodiment of the reel disk according to the present invention, and FIG. 3 shows the reflection of light when the non-reflective part faces the light receiving/emitting element assembly. 4 and 5 are bottom views of examples of conventional reel disks, respectively, and FIG. 6 is a cross-sectional and developed view taken along the line ``--'' in FIG. 5. 10... Reel disk, 15... Receiving/emitting element unit, 18... Flat recess, 19... Annular groove,
19a... Inclined bottom surface, 20... Circular sheet, 20
a...Slit, 20b...Reflector, 20c...
Inner circumferential annular portion, 20d... Outer circumferential annular portion, 21... Non-reflective portion.
Claims (1)
して配され、反射光の状況により回転を検出され
る回転被検出部を備えてなるリールデイスクにお
いて、該リールデイスクの底面に形成された環状
の溝と、該リールデイスクの底面に該環状溝の開
口を覆うように取り付けられており、周方向に複
数のスリツトが形成してあり、反射率の高い表面
を有する円形シートとよりなり、該円形シートの
うち隣り合うスリツトの間の部分が上記反射部を
形成し、該スリツトとこれに対向する該環状溝と
が上記非反射部を形成する回転被検出部を備えて
なる構成のリールデイスク。 In a reel disk comprising a rotating detected portion in which reflective portions and non-reflective portions are arranged alternately and repeatedly in the circumferential direction, and rotation is detected depending on the state of reflected light, the reel disk is formed on the bottom surface of the reel disk. A circular sheet is attached to the bottom of the reel disk so as to cover the opening of the annular groove, has a plurality of slits formed in the circumferential direction, and has a highly reflective surface. A configuration in which a portion of the circular sheet between adjacent slits forms the reflective portion, and the slit and the annular groove opposing the slit form a rotating detected portion that forms the non-reflective portion. reel disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9253085U JPS623638U (en) | 1985-06-19 | 1985-06-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9253085U JPS623638U (en) | 1985-06-19 | 1985-06-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS623638U true JPS623638U (en) | 1987-01-10 |
Family
ID=30649407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9253085U Pending JPS623638U (en) | 1985-06-19 | 1985-06-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS623638U (en) |
-
1985
- 1985-06-19 JP JP9253085U patent/JPS623638U/ja active Pending