JPS60143667U

JPS60143667U - Torque control device in impact wrenches

Info

Publication number: JPS60143667U
Application number: JP3083084U
Authority: JP
Inventors: 藤本　薫
Original assignee: 日本捻廻株式会社
Priority date: 1984-03-03
Filing date: 1984-03-03
Publication date: 1985-09-24

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す側断面図、第２図は第１
図■−■線矢視図、第３図は第１図■二■線断面矢視図
、第４図は第１図要部拡大図、第５図及び第６図は作動
説明図、第７図及び第８図は他の実施例を示す要部断面
図である。１・・・・・・エア供給路、８・・・・・・通路遮断部
、１０・・・・・・エアモータ、１１・・・・・・ロー
タ軸、２７−−−−−−クラツチ体、２９・・・・・・
調整ネジ、３７・・・・・・コイルバネ、４２・・・・
・・回動アーム、４５・・・・・・スリーブ体、４６・
・・・・・バルブ体、６０・・・・・・操作杆、６２・
・・・・・エア案内溝、６３・・・・・・エア案内孔、
６４・・・・・・エア受面、６５・・・・・・復帰バネ
。】 −−ｍｍ第２図　　　　　　Ｌｌへし一〇ゝ５　　　　　゛第５いＮ　　　　　　、−＋図　　　　　　　　２３　　３７９ノ）□ ″Δメロ戸女　　　− づ７．４１１１１□ −第８図５Fig. 1 is a side sectional view showing an embodiment of the present invention, and Fig. 2 is a side sectional view showing an embodiment of the present invention.
Figure 3 is a sectional view taken along the line 2-2 in Figure 1, Figure 4 is an enlarged view of the main parts of Figure 1, Figures 5 and 6 are operation explanatory diagrams, 7 and 8 are main part sectional views showing other embodiments. DESCRIPTION OF SYMBOLS 1... Air supply path, 8... Passage blocking part, 10... Air motor, 11... Rotor shaft, 27... Clutch body , 29...
Adjustment screw, 37... Coil spring, 42...
...Rotating arm, 45...Sleeve body, 46.
... Valve body, 60 ... Operation rod, 62.
...Air guide groove, 63...Air guide hole,
64... Air receiving surface, 65... Return spring. ] --mm Fig. 2

Claims

[Scope of utility model registration request]

In an impact wrench equipped with a torque control mechanism that detects a predetermined tightening reaction torque acting on the rotor shaft of an air motor and freely opens and closes the compressed air supply path, the torque control mechanism is installed externally at the rear of the rotor shaft. a clutch body that is fitted and pushed axially rearward in response to reaction torque; a biasing spring that biases the respective latch body forward;
An adjustment screw that receives the other end of the biasing spring and is movable forward and backward in the rotor axial direction, and when the clutch body moves backward by a predetermined amount, it comes into contact with the clutch body and is rotated so as to be able to come into contact with and separate from the clutch body. The passage blocking part includes a rotating arm and a passage blocking part operated by the rotating arm, and the passage blocking part has a sleeve body that communicates with the air supply passage, and a shaft inside the sleeve body to freely open and close the communicating passage. A valve body provided to be slidable in a direction, a guide path for guiding compressed air to an air receiving surface on the side of the valve body in order to move the valve body in the direction of closing the communication portion, and a guide path for guiding compressed air to an air receiving surface on the side of the valve body, and a valve body that is pushed by the rotating arm. , an impact characterized by comprising an operating rod that pushes the valve body so that compressed air flows into the air receiving surface of the valve body by the pushing motion, and a return spring that biases the valve body in the direction between the communication parts. Torque control device in wrench.