JPH0486182U

JPH0486182U -

Info

Publication number: JPH0486182U
Application number: JP12766890U
Authority: JP
Priority date: 1990-11-30
Filing date: 1990-11-30
Publication date: 1992-07-27
Anticipated expiration: 2004-11-02
Also published as: JPH0641813Y2

Description

[Brief explanation of the drawing]

第１図〜第４図は本考案に係る圧縮空気式釘打
機の安全装置の作動態様説明図、第５図は上記釘
打機の縦断面図、第６図はコンタクトバルブとコ
ンタクト部材の説明図である。符号ａ……エアチヤンバ、１……ハウジング、
４……ノーズ部、６……可動打撃シリンダ、９…
…打撃ピストン、１０……メインバルブ、１８…
…パイロツトバルブ、１９……パイロツトバルブ
ステム、２０……パイロツトチヤンバ、２２……
連通路、２３……コンタクトバルブ、２４……ト
リガバルブステム、３１……コンタクト部材、３
２……バルブハウジング、３４……排気弁、３５
……吸気弁、３６……操作ステム、３９……排気
口、４６……遅延チヤンバ、５１……微小径の流
路。 Figures 1 to 4 are explanatory diagrams of the operation mode of the safety device of the compressed air nailer according to the present invention, Figure 5 is a longitudinal sectional view of the nailer, and Figure 6 is a diagram showing the contact valve and contact member. It is an explanatory diagram. Code a...Air chamber, 1...Housing,
4...Nose part, 6...Movable impact cylinder, 9...
...Strike piston, 10...Main valve, 18...
...Pilot valve, 19...Pilot valve stem, 20...Pilot chamber, 22...
Communication path, 23... Contact valve, 24... Trigger valve stem, 31... Contact member, 3
2...Valve housing, 34...Exhaust valve, 35
... Intake valve, 36 ... Operation stem, 39 ... Exhaust port, 46 ... Delay chamber, 51 ... Micro-diameter flow path.

Claims

[Scope of Claim for Utility Model Registration] A striking cylinder disposed within a housing, a striking piston integrally provided with a nail driving driver slidably disposed within the cylinder, and a striking piston that is constantly connected to a compressed air supply source. a main valve that selectively connects an upper part of the striking piston of the striking cylinder between the air chamber and the atmosphere; a pilot valve which is operated by supplying and discharging compressed air to and from a pilot chamber that accommodates one end of the pilot valve stem, and which is operated in contact with the material to be driven; a contact valve operated by a manually operated trigger lever and selectively connects a communication passage communicating with the pilot chamber with the exhaust port and the air chamber; and a trigger valve stem that opens and closes a communication passage that communicates with the contact valve, and the contact valve includes a valve cylinder that is disposed within the valve housing and whose upper end is closed; and a trigger valve stem that is disposed within the valve cylinder. In addition, it integrally includes a sleeve-shaped exhaust valve that opens and closes a flow path between an exhaust port formed in the valve housing and the communication path, and a hollow stem that penetrates the hollow part of the exhaust valve and protrudes downward. an intake valve that is disposed above the exhaust valve in the valve cylinder and opens and closes a flow path between the communication passage and the air chamber; an operating stem disposed within a delay chamber defined between a valve cylinder and an upper end of the intake valve, and for opening and closing a flow path between the delay chamber and the exhaust port; A safety device for a compressed air nailer, characterized in that the device is constantly in communication with the air chamber through a small diameter flow path.