JPH0347777U

JPH0347777U -

Info

Publication number: JPH0347777U
Application number: JP10803389U
Authority: JP
Priority date: 1989-09-14
Filing date: 1989-09-14
Publication date: 1991-05-07
Anticipated expiration: 2004-09-14
Also published as: JPH0744460Y2

Description

[Brief explanation of drawings]

第５図は本考案になる空気式打込機のトリツガ
バルブの一実施例を示す断面図、第１図〜第３図
は第５図のトリツガバルブの詳細断面図である。
第４図は従来例のトリツガバルブ部の詳細断面図
である。図において、１は本体、２はシリンダ、３はピ
ストン、４はピストン上室、５はシリンダバルブ
、６は主加圧室、７は打撃棒、８はシリンダバル
ブ室、９はバルブ通路、１０は加圧室通路、１１
はトリツガプランジヤ、１２はトリツガバルブ、
１３はトリツガ、１４は入気バルブ、１５はプラ
ンジヤＯリング、１６は排気バルブ、１７は貫通
穴、１８はバルブ排気穴、１９はバルブスプリン
グ、２０はブツシユＯリングＡ、２１はブツシユ
ＯリングＢ、２２はプランジヤ大径部、２３はプ
ランジヤ小径下部、２４はブツシユ内径部、２５
はプランジヤ小径上部、２６は空気通路、２７は
トリツガバルブ室上部、２８はトリツガバルブ部
下部、２９はバルブブツシユ、３０はバルブブツ
シユ底面である。 FIG. 5 is a sectional view showing one embodiment of the trigger valve of the pneumatic driving machine according to the present invention, and FIGS. 1 to 3 are detailed sectional views of the trigger valve of FIG. 5.
FIG. 4 is a detailed sectional view of a conventional trigger valve section. In the figure, 1 is the main body, 2 is the cylinder, 3 is the piston, 4 is the upper chamber of the piston, 5 is the cylinder valve, 6 is the main pressurizing chamber, 7 is the striking rod, 8 is the cylinder valve chamber, 9 is the valve passage, 10 is the pressurized chamber passage, 11
is the trigger plunger, 12 is the trigger valve,
13 is a trigger, 14 is an intake valve, 15 is a plunger O-ring, 16 is an exhaust valve, 17 is a through hole, 18 is a valve exhaust hole, 19 is a valve spring, 20 is a bush O-ring A, 21 is a bush O-ring B , 22 is the large diameter part of the plunger, 23 is the lower part of the small diameter of the plunger, 24 is the inner diameter part of the bushing, 25
26 is the small diameter upper part of the plunger, 26 is the air passage, 27 is the upper part of the trigger valve chamber, 28 is the lower part of the trigger valve part, 29 is the valve bush, and 30 is the bottom surface of the valve bush.

Claims

[Scope of utility model registration request]

A cylinder valve that opens and closes by operating a trigger valve is provided at the top of the cylinder on which a piston that is integrally connected with the driving rod slides, and when the trigger plunger of the trigger valve is pushed up, the cylinder valve chamber, which is the upper chamber of the cylinder valve, opens and closes. The pressurized air of is exhausted, and the cylinder valve is opened by the pressurized air of the main pressurization chamber in the space of the main body,
In a driving machine in which pressurized air flows into a cylinder and applies a striking force to a piston, the trigger plunger slides between a small-diameter upper part of the plunger that fits into a pressure chamber passage leading to a main pressure chamber. A large-diameter portion of the plunger that fits into the inner part of the valve bushing that guides the movement, and a small-diameter lower portion of the plunger that fits into the bottom hole of the valve bushing are integrally formed, and the inside of the trigger valve is formed with the large diameter portion of the trigger plunger. The trigger valve chamber is divided into an upper trigger valve chamber and a lower trigger valve chamber, and the upper trigger valve chamber and the lower trigger valve chamber communicate with each other through a hole penetrating the large diameter portion of the plunger, and when the trigger plunger is pushed up. A trigger valve for a pneumatic driving machine, characterized in that pressurized air is exhausted from the lower part of the trigger valve chamber after the upper part of the small diameter plunger is sealed.