JPH02101091U - - Google Patents
Info
- Publication number
- JPH02101091U JPH02101091U JP825889U JP825889U JPH02101091U JP H02101091 U JPH02101091 U JP H02101091U JP 825889 U JP825889 U JP 825889U JP 825889 U JP825889 U JP 825889U JP H02101091 U JPH02101091 U JP H02101091U
- Authority
- JP
- Japan
- Prior art keywords
- return path
- discharge port
- base
- port
- low
- 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
- 238000005192 partition Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Details And Applications Of Rotary Liquid Pumps (AREA)
Description
図面は本考案の実施例を示すものであつて、そ
の第１図はポンプカバーを外した本考案の正面図
、第２図は第１図−矢視断面図、第３図は第
１図−矢視断面図、第４図は本考案の第１実
施例の略示断面図、第５図はポンプボデイーの一
部切除した斜視図、第６図、第７図はリリーフバ
ルブ箇所に低圧帰還路を形成した本考案の第１実
施例の要部斜視図、第８図は本考案の第２実施例
の略示断面図、第９図は第８図に使用したポンプ
カバーの斜視図、第１０図は低圧帰還路をポンプ
ボデイー及びポンプカバーに形成した略示断面図
、第１１図は本考案の第１実施例を変形した略示
断面図、第１２図は本考案の作用状態を示す構成
図である。
２……ポンプカバー、４……アウターロータ、
５……インナーロータ、６……吸入ポート、７…
…吐出ポート、８……ポート間仕切部、９……リ
リーフバルブ、９ａ……リリーフ孔部、１０……
バイパス、１１……帰還路基部、１２……ボデイ
ー側帰還溝、１３……カバー側帰還溝。
The drawings show an embodiment of the present invention, in which Fig. 1 is a front view of the invention with the pump cover removed, Fig. 2 is a cross-sectional view taken from Fig. 1 - Fig. - A cross-sectional view in the direction of the arrows, FIG. 4 is a schematic cross-sectional view of the first embodiment of the present invention, FIG. 5 is a partially cutaway perspective view of the pump body, and FIGS. 6 and 7 show low pressure at the relief valve location. FIG. 8 is a schematic cross-sectional view of the second embodiment of the present invention, and FIG. 9 is a perspective view of the pump cover used in FIG. 8. , Fig. 10 is a schematic cross-sectional view showing a low pressure return path formed in the pump body and pump cover, Fig. 11 is a schematic cross-sectional view of a modification of the first embodiment of the present invention, and Fig. 12 is a working state of the present invention. FIG. 2...Pump cover, 4...Outer rotor,
5...Inner rotor, 6...Suction port, 7...
...Discharge port, 8...Port partition, 9...Relief valve, 9a...Relief hole, 10...
Bypass, 11...Return path base, 12...Body side return groove, 13...Cover side return groove.
Claims (1)
パスと吐出ポートとの間のリリーフ孔部に、帰還
路基部とこれに連通するボデイー側帰還溝からな
る低圧帰還路の帰還路基部端を連結し、吸入ポー
トと吐出ポートとの間のポート間仕切部で、且つ
アウターロータとインナーロータにて形成する空
隙部箇所に、前記低圧帰還路のボデイー側帰還溝
端を配置したことを特徴としたトロコイド型オイ
ルポンプ。 (2) 吐出ポートに設けたリリーフバルブのバイ
パスと吐出ポートとの間のリリーフ孔部に、帰還
路基部とこれに連通するカバー側帰還溝からなる
低圧帰還路の帰還路基部端を連結し、吸入ポート
と吐出ポートとの間のポート間仕切部で、且つア
ウターロータとインナーロータにて形成する空隙
部箇所に相当する位置のポンプカバー内面に、前
記低圧帰還路のカバー側帰還溝端を配置したこと
を特徴としたトロコイド型オイルポンプ。[Claims for Utility Model Registration] (1) A low-pressure return path consisting of a return path base and a body-side return groove communicating with the relief hole between the bypass of the relief valve provided at the discharge port and the discharge port. The body-side return groove end of the low-pressure return path is arranged at a port partition between the suction port and the discharge port, connecting the base ends of the return path, and at a gap formed by the outer rotor and the inner rotor. Trochoid type oil pump featuring (2) Connecting the base end of the return path of the low pressure return path consisting of the base of the return path and the return groove on the cover side communicating with the base of the return path to the relief hole between the bypass of the relief valve provided at the discharge port and the discharge port, A cover-side return groove end of the low-pressure return path is arranged on the inner surface of the pump cover at a port partition between the suction port and the discharge port and at a position corresponding to the gap formed by the outer rotor and the inner rotor. Trochoid type oil pump featuring
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP825889U JPH073034Y2 (en) | 1989-01-30 | 1989-01-30 | Trochoid type oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP825889U JPH073034Y2 (en) | 1989-01-30 | 1989-01-30 | Trochoid type oil pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02101091U true JPH02101091U (en) | 1990-08-10 |
| JPH073034Y2 JPH073034Y2 (en) | 1995-01-30 |
Family
ID=31213976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP825889U Expired - Lifetime JPH073034Y2 (en) | 1989-01-30 | 1989-01-30 | Trochoid type oil pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073034Y2 (en) |
-
1989
- 1989-01-30 JP JP825889U patent/JPH073034Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH073034Y2 (en) | 1995-01-30 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |