JPH0445677U - - Google Patents
Info
- Publication number
- JPH0445677U JPH0445677U JP8810890U JP8810890U JPH0445677U JP H0445677 U JPH0445677 U JP H0445677U JP 8810890 U JP8810890 U JP 8810890U JP 8810890 U JP8810890 U JP 8810890U JP H0445677 U JPH0445677 U JP H0445677U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- diameter part
- sleeve
- fitted
- hydraulic pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
Landscapes
- Percussive Tools And Related Accessories (AREA)
Description
第１図はこの考案の実施例を示す縦断正面図、
第２図、第３図は同上の作用を示す各状態の要部
縦断拡大正面図、第４図は従来装置の縦断正面図
である。
１……シリンダ、３……大径部、４……ピスト
ン、５……上室、６……中室、７……下室、８…
…弁室、１０……弁体、１１……排油口、１２…
…給油口、２２……中径部、２３……スリーブ、
２４……突部、２５……溝、２６……ストツプリ
ング、２７……段部。
FIG. 1 is a longitudinal sectional front view showing an embodiment of this invention.
FIGS. 2 and 3 are enlarged longitudinal sectional front views of essential parts in each state showing the same action as above, and FIG. 4 is a longitudinal sectional front view of the conventional device. 1... Cylinder, 3... Large diameter part, 4... Piston, 5... Upper chamber, 6... Middle chamber, 7... Lower chamber, 8...
...Valve chamber, 10... Valve body, 11... Oil drain port, 12...
...Fuel filler port, 22...Medium diameter part, 23...Sleeve,
24... Protrusion, 25... Groove, 26... Stop ring, 27... Step portion.
Claims (1)
、ピストンの大径部の下部におけるシリンダの内
周には下室を設け、油圧あるいは油圧とガス圧に
よるピストンの昇降と、ピストンの昇降に伴う油
圧の切換えにより弁体を昇降させるようにした装
置において、ピストンの大径部の上部に中径部を
形成し、この中径部の外側にスリーブをはめ、ス
リーブの上部内周の突部を中径部の上端の段部と
、その上部のピストン外周の溝にはめたストツプ
リングの間に位置させて、ピストンに対するスリ
ーブ可動範囲を限定するとともに、ピストンの下
限位置において、上記スリーブの下端が下室に臨
むようにし、ピストンの反撥時にはスリーブがピ
ストンより若干遅れて上昇するようにした衝撃動
工具。 A piston with a large diameter part is fitted in the cylinder, and a lower chamber is provided on the inner periphery of the cylinder at the bottom of the large diameter part of the piston, and the piston is raised and lowered by hydraulic pressure or hydraulic pressure and gas pressure, and the hydraulic pressure associated with the raising and lowering of the piston. In a device in which a valve body is raised and lowered by switching the piston, a medium diameter part is formed at the top of the large diameter part of the piston, a sleeve is fitted on the outside of this medium diameter part, and a protrusion on the inner periphery of the upper part of the sleeve is fitted into the middle diameter part. It is positioned between the step at the upper end of the diameter portion and the stop ring fitted in the groove on the outer circumference of the piston above the step to limit the range of movement of the sleeve relative to the piston, and at the lower limit position of the piston, the lower end of the sleeve is placed in the lower chamber. This is an impact power tool in which the sleeve rises slightly behind the piston when the piston rebounds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8810890U JPH0445677U (en) | 1990-08-21 | 1990-08-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8810890U JPH0445677U (en) | 1990-08-21 | 1990-08-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0445677U true JPH0445677U (en) | 1992-04-17 |
Family
ID=31821062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8810890U Pending JPH0445677U (en) | 1990-08-21 | 1990-08-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0445677U (en) |
-
1990
- 1990-08-21 JP JP8810890U patent/JPH0445677U/ja active Pending