JPS61169290U

JPS61169290U -

Info

Publication number: JPS61169290U
Application number: JP5407785U
Authority: JP
Priority date: 1985-04-11
Filing date: 1985-04-11
Publication date: 1986-10-20

Description

[Brief explanation of the drawing]

第１図は本考案に係るベーンポンプの一実施例
を示す一部破断側面図、第２図は第１図における
―線の端面図、第３図は本考案の他の実施例
を示す一部破断側面図、第４図は第３図における
―線における端面図、第５図は第４図におけ
る―線における断面図である。第６図は従来
技術を示す一部破断側面図、第７図は第６図にお
ける―線の端面図、第８図は第６図における
―線端面図である。１，１Ａ，１Ｂ……ベーンポンプ、２……カム
リング、３……リヤプレート、４……フロントプ
レート、８……ベーン、９……ロータ、１０……
作業室、１１……吸入口、１２……低圧通路、１
３……高圧通路、１６……シールリング溝、１７
……シールリング、１９ａ，１９ｂ……連通孔。 Fig. 1 is a partially cutaway side view showing one embodiment of the vane pump according to the present invention, Fig. 2 is an end view taken along the - line in Fig. 1, and Fig. 3 is a partial view showing another embodiment of the present invention. A broken side view, FIG. 4 is an end view taken along the line --- in FIG. 3, and FIG. 5 is a cross-sectional view taken along the -- line in FIG. 4. FIG. 6 is a partially cutaway side view showing the prior art, FIG. 7 is an end view along the -- line in FIG. 6, and FIG. 8 is an end view along the -- line in FIG. 6. 1, 1A, 1B... Vane pump, 2... Cam ring, 3... Rear plate, 4... Front plate, 8... Vane, 9... Rotor, 10...
Working chamber, 11... Suction port, 12... Low pressure passage, 1
3... High pressure passage, 16... Seal ring groove, 17
...Seal ring, 19a, 19b...Communication hole.

Claims

[Scope of utility model registration request]

A cam ring that houses a rotor in which a plurality of vanes are attached so as to be freely protrusive and retractable in a substantially radial direction, and that forms a working chamber in which the volume increases and decreases between adjacent vanes of the plurality of vanes, and an opening at one end of the cam ring is closed. The working chamber and a low-pressure passage for introducing hydraulic oil from the suction port into the working chamber are provided at the joining surface of any two members of the rear plate that closes the cam ring and the front plate that closes the other end opening of the cam ring. A vane pump in which a seal ring groove is formed to surround the seal ring groove, and a seal ring is interposed in the seal ring groove, and a communication hole is formed between the seal ring groove and the low pressure passage to communicate them. vane pump.