JPS6272068U

JPS6272068U -

Info

Publication number: JPS6272068U
Application number: JP16439385U
Authority: JP
Priority date: 1985-10-25
Filing date: 1985-10-25
Publication date: 1987-05-08

Description

[Brief explanation of the drawing]

第１図は本考案のクラツチ式電動締付工具の一
実施例を示す縦断側面図、第２図は第１図の―
線断面図、第３図は第１図の固定クラツチと鋼
球との噛合いが離脱係合する状態を示す平面図、
第４図は第３図の側面図、第５図は本考案のクラ
ツチ式電動締付工具の電気回路の一実施例を示す
回路図である。１…モータ、２…遊星歯車機構、３…固定クラ
ツチ、３ａ，３ｃ…斜面、３ｂ…平担部、４…シ
ヤフト、９…回転板、１０…鋼球、１１…可動ク
ラツチ、１３…スプリング、１４…スリーブ、１
５…ロツド、１７…リミツトスイツチ、２１…起
動スイツチ、２２…正逆切換スイツチ、２４…Ｎ
ＰＮトランジスタ、２５，２８，２９，３１，３
２，３３…抵抗、２６，３０…サイリスタ、２７
…ＮＰＮトランジスタ、３４，３５…コンデンサ
。 Fig. 1 is a longitudinal side view showing an embodiment of the clutch type electric tightening tool of the present invention, and Fig. 2 is a side view of the clutch-type electric tightening tool of the present invention.
A line sectional view, FIG. 3 is a plan view showing a state in which the fixed clutch shown in FIG. 1 and the steel ball are engaged and disengaged;
FIG. 4 is a side view of FIG. 3, and FIG. 5 is a circuit diagram showing an embodiment of the electric circuit of the clutch type electric tightening tool of the present invention. DESCRIPTION OF SYMBOLS 1... Motor, 2... Planetary gear mechanism, 3... Fixed clutch, 3a, 3c... Slope, 3b... Flat part, 4... Shaft, 9... Rotating plate, 10... Steel ball, 11... Movable clutch, 13... Spring, 14...Sleeve, 1
5...Rod, 17...Limit switch, 21...Start switch, 22...Forward/reverse switch, 24...N
PN transistor, 25, 28, 29, 31, 3
2, 33...Resistor, 26,30...Thyristor, 27
...NPN transistor, 34, 35...capacitor.

Claims

[Claims for Utility Model Registration] 1. A dog clutch that disconnects the output transmission between the drive shaft and the driven shaft of the motor upon receiving a predetermined load, and a start switch that starts the motor. and a limit switch that operates in response to displacement of the dog clutch, and a switch that uses a signal generated from the limit switch to cut off the power to the motor to self-hold, short-circuiting both ends of the motor, and applying dynamic braking. In the clutch-type electric tightening tool having a circuit, a flat portion is formed rearward from the apex of the engaging pawl on the orbit of the engaging pawl on the side where the fixed clutch and the movable clutch constituting the doging clutch come into contact. A clutch-type electric tightening tool, characterized in that the movable clutch is configured to reduce its return speed. 2. The clutch-type electric tightening tool according to claim 1, wherein the switching circuit is configured so that it does not operate even if the start switch is turned on while the limit switch remains in an operating state. .