JPH01154466U

JPH01154466U -

Info

Publication number: JPH01154466U
Application number: JP5177788U
Authority: JP
Priority date: 1988-04-18
Filing date: 1988-04-18
Publication date: 1989-10-24

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例の外観を示す図、第
２図は上記実施例の要部断面図、第３図は本実施
例におけるマツプメータ機構を示す図、第４図は
発光ダイオードと回転板と固定板とホトトランジ
スタの関係を示す図、第５図は第２図に示す部分
以外の部分の断面図、第６図は第１図の測輪３の
周辺の構造を示す図、第７図は本実施例の回路構
成を示す図、第８図はパルス発生回路を詳細に示
す図、第９図は測輪が正転方向に回転していると
きのパルス発生回路各部の波形を示す図、第１０
図は測輪が逆転方向に回転しているときのパルス
発生回路各部の波形を示す図、第１１図は表示パ
ネルの表示体配列および該表示パネルによる表示
例を示す図である。１……時計ケース、１ａ……時計ケース開口部
、２……表示パネル、３……測輪、４……時計ガ
ラス、５……ハウジング、６ａ……下部取付部材
、６ｂ……裏蓋、７，８，９……回転歯車、１０
……回転板、１１……発光受光部固定体、１１ａ
……溝部、１１ｂ……固定板、１２……発光ダイ
オード、１３……ホトトランジスタ、１４……回
路基板、１５，１６……電極、１７……電池、１
８……ＬＳＩ、１９……軸穴、２０……スイツチ
ングトランジスタ、５０……発振器、５１……分
周回路、５２……時刻計数回路、５４……距離レ
ジスタ、５７……縮尺カウンタ、５８……パルス
発生回路、５９……演算回路、６０……表示切換
回路、６１……表示部、６７，６９……立上り検
出回路、６８，７０……立下り検出回路、７５，
７６……タイマ回路、７９……比較回路。 Fig. 1 is a diagram showing the external appearance of an embodiment of the present invention, Fig. 2 is a sectional view of the main part of the above embodiment, Fig. 3 is a diagram showing the map meter mechanism in this embodiment, and Fig. 4 is a diagram showing the light emitting diode and A diagram showing the relationship between the rotating plate, the fixed plate, and the phototransistor, FIG. 5 is a sectional view of a portion other than that shown in FIG. 2, and FIG. 6 is a diagram showing the structure around the measuring wheel 3 in FIG. 1. Fig. 7 is a diagram showing the circuit configuration of this embodiment, Fig. 8 is a diagram showing details of the pulse generation circuit, and Fig. 9 is a waveform of various parts of the pulse generation circuit when the measuring wheel is rotating in the normal rotation direction. Figure 10 showing
The figure shows the waveforms of various parts of the pulse generating circuit when the measuring wheel is rotating in the reverse direction, and FIG. 11 is a diagram showing the display arrangement of the display panel and an example of the display by the display panel. DESCRIPTION OF SYMBOLS 1... Watch case, 1a... Watch case opening, 2... Display panel, 3... Measurement wheel, 4... Watch glass, 5... Housing, 6a... Lower mounting member, 6b... Back cover, 7, 8, 9...Rotating gear, 10
... Rotating plate, 11 ... Light emitting light receiving unit fixing body, 11a
...Groove, 11b...Fixing plate, 12...Light emitting diode, 13...Phototransistor, 14...Circuit board, 15, 16...Electrode, 17...Battery, 1
8... LSI, 19... Shaft hole, 20... Switching transistor, 50... Oscillator, 51... Frequency dividing circuit, 52... Time counting circuit, 54... Distance register, 57... Scale counter, 58 ... Pulse generation circuit, 59 ... Arithmetic circuit, 60 ... Display switching circuit, 61 ... Display section, 67, 69 ... Rise detection circuit, 68, 70 ... Fall detection circuit, 75,
76...Timer circuit, 79...Comparison circuit.

Claims

[Scope of utility model registration request]

A rotating body that rotates in response to the rolling of the measurement wheel and has multiple through holes whose width changes greatly in a certain direction on a circumference with a certain radius, a light emitting element that emits light, and a light receiving element that receives the light. A rotational direction detecting device comprising: a light receiving element; and a rotational direction detecting means for detecting the rotational direction of the rotating body based on a change in a signal from the light receiving element.