JPH0424678U - - Google Patents
Info
- Publication number
- JPH0424678U JPH0424678U JP6561990U JP6561990U JPH0424678U JP H0424678 U JPH0424678 U JP H0424678U JP 6561990 U JP6561990 U JP 6561990U JP 6561990 U JP6561990 U JP 6561990U JP H0424678 U JPH0424678 U JP H0424678U
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- pressure chamber
- recess
- groove
- cylinder hole
- 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.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims 1
Landscapes
- Details Of Reciprocating Pumps (AREA)
Description
第１図は、この考案の一実施例の要部を示す断
面図、第２図は、第１図のＦ方向から見たプラン
ジヤの部分的な図、そして、第３図は、凹所の部
分のプランジヤの外形を示す図である。
１１……本体、１２……シリンダ孔、４０……
プランジヤ、４２……圧力室、４３……カム、４
７……入口弁、７０……凹所、８０……溝。
Fig. 1 is a sectional view showing the main part of an embodiment of this invention, Fig. 2 is a partial view of the plunger seen from direction F in Fig. 1, and Fig. 3 is a recessed part. It is a figure which shows the external shape of the plunger of a part. 11...Main body, 12...Cylinder hole, 40...
Plunger, 42...pressure chamber, 43...cam, 4
7...Inlet valve, 70...Recess, 80...Groove.
Claims (1)
の本体のシリンダ孔に移動自在にはまり合つて圧
力室を区画するプランジヤと、そのプランジヤを
非作動位置から前記圧力室側に向けて移動させる
駆動機構と、前記圧力室を消費回路に連絡する出
口通路と、前記シリンダ孔の閉鎖端側とは反対側
の内周に段部を介在して形成される溝と、その溝
を作動液リザーバに連絡する入口通路と、前記プ
ランジヤが非作動位置にあるとき前記溝を介して
前記入口通路と連通するように前記プランジヤの
外周を減肉して形成される凹所と、その凹所を前
記圧力室に連絡して前記プランジヤに設けられる
連通孔とを有し、前記プランジヤの前記圧力室側
への移動に応じて前記凹所が前記段部を越えると
有効加圧が行われる液圧ポンプ装置において、前
記溝または前記凹所を、前記シリンダ孔または前
記プランジヤの周方向で分割されるように形成し
た液圧ポンプ装置。 a main body having a cylinder hole with one end closed; a plunger that is movably fitted into the cylinder hole of the main body to define a pressure chamber; and a drive mechanism that moves the plunger from a non-operating position toward the pressure chamber. , an outlet passage connecting the pressure chamber to a consumption circuit, a groove formed on the inner periphery of the cylinder hole opposite to the closed end side with a step interposed therebetween, and communicating the groove with a hydraulic fluid reservoir. an inlet passage, a recess formed by thinning the outer periphery of the plunger so as to communicate with the inlet passage via the groove when the plunger is in a non-operating position, and the recess being connected to the pressure chamber. A hydraulic pump device having a communication hole provided in the plunger in communication with each other, and in which effective pressurization is performed when the recess exceeds the stepped portion as the plunger moves toward the pressure chamber, A hydraulic pump device, wherein the groove or the recess is divided in a circumferential direction of the cylinder hole or the plunger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990065619U JP2544571Y2 (en) | 1990-06-21 | 1990-06-21 | Hydraulic pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990065619U JP2544571Y2 (en) | 1990-06-21 | 1990-06-21 | Hydraulic pump device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0424678U true JPH0424678U (en) | 1992-02-27 |
| JP2544571Y2 JP2544571Y2 (en) | 1997-08-20 |
Family
ID=31597608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990065619U Expired - Lifetime JP2544571Y2 (en) | 1990-06-21 | 1990-06-21 | Hydraulic pump device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2544571Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0267083U (en) * | 1988-11-07 | 1990-05-21 |
-
1990
- 1990-06-21 JP JP1990065619U patent/JP2544571Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0267083U (en) * | 1988-11-07 | 1990-05-21 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2544571Y2 (en) | 1997-08-20 |