JPS62114278U - - Google Patents
Info
- Publication number
- JPS62114278U JPS62114278U JP149786U JP149786U JPS62114278U JP S62114278 U JPS62114278 U JP S62114278U JP 149786 U JP149786 U JP 149786U JP 149786 U JP149786 U JP 149786U JP S62114278 U JPS62114278 U JP S62114278U
- Authority
- JP
- Japan
- Prior art keywords
- relief
- relief hole
- opening area
- valve
- oil pump
- 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
- 230000007246 mechanism Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 1
Description
第１図はこの考案に係るオイルポンプのリリー
フ機構の一実施例を示すその要部断面図、第２図
〜第５図は従来のオイルポンプのリリーフ機構を
示すものであり、第２図はオイルの潤滑系統を示
す図、第３図Ａはリリーフ機構の要部断面図、第
３図Ｂはリリーフ孔の正面図、第４図は問題点を
説明するための説明図、第５図は油圧特性を示す
図である。
２１，２２……リリーフ油圧回路、２３……バ
ルブハウジング、２４……リリーフバルブ、２８
……リリーフ孔、２８Ａ……主リリーフ孔、２８
Ｂ……副リリーフ孔、Ｗ……副リリーフ孔の巾、
Ｈ……副リリーフ孔の高さ。
FIG. 1 is a cross-sectional view of essential parts showing an embodiment of the oil pump relief mechanism according to this invention, and FIGS. 2 to 5 show conventional oil pump relief mechanisms. A diagram showing the oil lubrication system, Figure 3A is a sectional view of the main part of the relief mechanism, Figure 3B is a front view of the relief hole, Figure 4 is an explanatory diagram to explain the problem, and Figure 5 is FIG. 3 is a diagram showing hydraulic characteristics. 21, 22... Relief hydraulic circuit, 23... Valve housing, 24... Relief valve, 28
... Relief hole, 28A ... Main relief hole, 28
B... Sub-relief hole, W... Width of sub-relief hole,
H: Height of the sub-relief hole.
Claims (1)
回路上に設けられ、油圧とバルブスプリングのば
ね力とに応じてバルブハウジングに設けられたリ
リーフ孔の開口面積を変化させるリリーフバルブ
を有するリリーフ機構において、前記リリーフ孔
を、所定の開口面積を有する主リリーフ孔と、該
主リリーフ孔にその下縁で連通するとともにその
開口面積が前記主リリーフ孔のそれより小さくな
るようにその巾と長さとを所定値に設定した副リ
リーフ孔と、により構成したことを特徴とするオ
イルポンプのリリーフ機構。 A relief mechanism including a relief valve that is provided on a relief hydraulic circuit between an oil pump and an operating device and that changes the opening area of a relief hole provided in a valve housing depending on the oil pressure and the spring force of a valve spring, The relief hole is connected to a main relief hole having a predetermined opening area at its lower edge, and its width and length are determined so that the opening area is smaller than that of the main relief hole. An oil pump relief mechanism characterized by comprising a sub-relief hole set to a certain value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP149786U JPS62114278U (en) | 1986-01-08 | 1986-01-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP149786U JPS62114278U (en) | 1986-01-08 | 1986-01-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62114278U true JPS62114278U (en) | 1987-07-21 |
Family
ID=30779457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP149786U Pending JPS62114278U (en) | 1986-01-08 | 1986-01-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62114278U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011137479A (en) * | 2009-12-25 | 2011-07-14 | Yamada Seisakusho Co Ltd | Relief valve of oil pump |
-
1986
- 1986-01-08 JP JP149786U patent/JPS62114278U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011137479A (en) * | 2009-12-25 | 2011-07-14 | Yamada Seisakusho Co Ltd | Relief valve of oil pump |
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