JPH0215276U

JPH0215276U -

Info

Publication number: JPH0215276U
Application number: JP8885288U
Authority: JP
Priority date: 1988-07-04
Filing date: 1988-07-04
Publication date: 1990-01-30

Description

[Brief explanation of drawings]

第１図は本考案の実施例に係るシールリング摩
耗検知装置を備えた打撃工具の縦断正面図、第２
図はシールリング摩耗検知装置部分の縦断拡大正
面図である。１…工具本体、２…シリンダ部材、７…ピスト
ン部材、８…空気室、９…シールリング、１５…
チゼル、１９…連通路、２１…セーフテイストツ
パ、Ａ…シールリング摩耗検知装置、Ｂ…打撃工
具。 FIG. 1 is a longitudinal sectional front view of a striking tool equipped with a seal ring wear detection device according to an embodiment of the present invention;
The figure is an enlarged longitudinal sectional front view of a portion of the seal ring wear detection device. DESCRIPTION OF SYMBOLS 1... Tool body, 2... Cylinder member, 7... Piston member, 8... Air chamber, 9... Seal ring, 15...
Chisel, 19...Communication path, 21...Safetaste spring, A...Seal ring wear detection device, B...Breaking tool.

Claims

[Scope of utility model registration request]

A closed air chamber is formed between a bottomed cylindrical cylinder member that is movably provided within the tool body and the cylinder member that is movably provided inside the cylinder member via a seal ring. a piston member; and a chisel that is fitted and supported on the front end side of the tool body so as to be movable forward and backward in the front of the bottomed part of the cylinder member, and the chisel is provided with a chisel that is movably inserted and supported in front of the bottomed part of the cylinder member on the distal end side of the tool body, and the air is A device for detecting wear of the seal ring of a striking tool that moves the other side forward to strike the chisel by compressing air in the chamber, the device being provided on the cylinder member and communicating the air chamber with the outside. A communication passage is fitted into the communication passage with a portion protruding from the air chamber so as to block the communication passage from the air chamber, and when the cylinder member and the piston member collide, the air chamber is inserted into the communication passage to the outside. A seal ring wear detection device for a striking tool, comprising: a safety tip pushed into the communication path by a piston member so as to communicate with the seal ring.