JPH0363785U - - Google Patents
Info
- Publication number
- JPH0363785U JPH0363785U JP12523889U JP12523889U JPH0363785U JP H0363785 U JPH0363785 U JP H0363785U JP 12523889 U JP12523889 U JP 12523889U JP 12523889 U JP12523889 U JP 12523889U JP H0363785 U JPH0363785 U JP H0363785U
- Authority
- JP
- Japan
- Prior art keywords
- discharge
- chamber
- suction
- cylinder
- stroke
- 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
- 239000010720 hydraulic oil Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案の一実施例に係る斜板型油圧ポ
ンプを示す縦断面図、第２図はバルブ体を示す斜
視図、第３図は吸入側及び吐出側切欠部と吸入及
び吐出ポートとの関係を示す拡大断面図、第４図
は吸入及び吐出ポートが交互に開閉する様子を示
す図、第５図は従来例の要部を示す断面図である
。
１……シリンダブロツク、１ａ……シリンダボ
ア、２……第２ハウジング（ハウジング）、３…
…ポンプ室、４……回転軸、５……揺動板、７…
…ピストン、９ａ……吐出室、１４……シリンダ
室、２０……バルブ体、２０ａ……吸入側切欠部
、２０ｂ……吐出側切欠部、２０ｃ……円形軸部
、２１……円形穴、２２……吸入ポート、２３…
…吐出ポート。
Fig. 1 is a longitudinal sectional view showing a swash plate type hydraulic pump according to an embodiment of the present invention, Fig. 2 is a perspective view showing the valve body, and Fig. 3 is a suction side and discharge side notch and suction and discharge ports. FIG. 4 is a diagram showing how the suction and discharge ports are alternately opened and closed, and FIG. 5 is a cross-sectional view showing the main parts of a conventional example. 1... Cylinder block, 1a... Cylinder bore, 2... Second housing (housing), 3...
...Pump chamber, 4... Rotating shaft, 5... Rocking plate, 7...
...Piston, 9a...Discharge chamber, 14...Cylinder chamber, 20...Valve body, 20a...Suction side notch, 20b...Discharge side notch, 20c...Circular shaft, 21...Circular hole, 22... Suction port, 23...
...Discharge port.
Claims (1)
ジングとにより画成されるポンプ室内に配置され
、回転軸の回転に伴ない軸方向に揺動する揺動板
と、該揺動板の揺動により前記シリンダボア内を
往復動するピストンとを備え、該ピストンの往復
動により、前記ポンプ室からシリンダ室内に作動
油が吸入される吸入行程と、吸入された作動油が
圧縮されて吐出室に吐出される吐出行程が繰り返
される斜板型油圧ポンプにおいて、前記回転軸の
外周にバルブ体が嵌合して固定されており、該バ
ルブ体の一端側には前記ポンプ室に連通した円弧
状の吸入側切欠部が、その他端側には前記吐出室
側に連通した円弧状の吐出側切欠部が、その中央
部には円形軸部が夫々形成されており、前記シリ
ンダブロツクには、前記円形軸部が嵌合する円形
穴と、該円形穴の一側にあつて前記シリンダ室に
連通した吸入ポートと、前記円形穴の他側にあつ
て前記シリンダ室に連通した吐出ポートとが形成
されており、前記吸入行程の間前記吸入側切欠部
が前記吸入ポートと合致し且つ前記吐出行程の間
前記吐出側切欠部が前記吐出ポートと合致するよ
うに、前記吸入側及び吐出側切欠部が周方向にず
れた位置に設けられていることを特徴とする斜板
型油圧ポンプ。 A rocking plate is disposed in a pump chamber defined by a cylinder block having a cylinder bore and a housing, and swings in the axial direction as the rotating shaft rotates, and the rocking plate moves back and forth within the cylinder bore. The reciprocating motion of the piston repeats a suction stroke in which hydraulic oil is sucked into the cylinder chamber from the pump chamber, and a discharge stroke in which the sucked hydraulic oil is compressed and discharged into the discharge chamber. In the swash plate type hydraulic pump, a valve body is fitted and fixed to the outer periphery of the rotating shaft, and one end of the valve body has an arc-shaped suction side notch that communicates with the pump chamber. An arcuate discharge side notch communicating with the discharge chamber side is formed on the end side, and a circular shaft portion is formed in the center thereof, and the cylinder block has a circular shape into which the circular shaft portion fits. a hole, a suction port located on one side of the circular hole and communicating with the cylinder chamber, and a discharge port located on the other side of the circular hole and communicating with the cylinder chamber; The suction side and discharge side notches are placed at circumferentially offset positions such that the suction side notch matches the suction port during the discharge stroke, and the discharge side notch matches the discharge port during the discharge stroke. A swash plate type hydraulic pump characterized by being provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12523889U JPH0363785U (en) | 1989-10-26 | 1989-10-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12523889U JPH0363785U (en) | 1989-10-26 | 1989-10-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0363785U true JPH0363785U (en) | 1991-06-21 |
Family
ID=31673121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12523889U Pending JPH0363785U (en) | 1989-10-26 | 1989-10-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0363785U (en) |
-
1989
- 1989-10-26 JP JP12523889U patent/JPH0363785U/ja active Pending
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