JPH0243485U

JPH0243485U -

Info

Publication number: JPH0243485U
Application number: JP12220788U
Authority: JP
Priority date: 1988-09-20
Filing date: 1988-09-20
Publication date: 1990-03-26

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図及び第２図は本考案の一実施例を示すベ
ーンポンプであり、第１図は内部の展開図、第２
図Ａはサイドプレートの正面図、第２図Ｂは前図
の概略拡大図、第３図及び第４図はベーンポンプ
の騒音特性を示す線図、第５図乃至第１０図は従
来のベーンポンプを示す図であり、第５図は内部
の展開図、第６図は縦断側面図、第７図は縦断正
面図、第８図は内部の展開図、第９図はカム曲線
を示す線図、第１０図は圧力曲線を示す線図であ
る。１：カム長径区間、２：吐出しポート、３ａ，
３ｂ：ヒゲ形Ｖ溝、４：吸込みポート、５：カム
短径区間、６：カムリング、７：ロータ、８：ベ
ーン、９ａ，９ｂ：ヒゲ形Ｖ溝、１５ａ，１５ｂ
：エンドミル溝。なお、各図中、同一符号は同一
または相当部を示す。 Figures 1 and 2 show a vane pump showing one embodiment of the present invention. Figure 1 is an internal development view,
Figure A is a front view of the side plate, Figure 2B is a schematic enlarged view of the previous figure, Figures 3 and 4 are diagrams showing the noise characteristics of the vane pump, and Figures 5 to 10 are diagrams of the conventional vane pump. 5 is a developed view of the interior, FIG. 6 is a vertical side view, FIG. 7 is a vertical front view, FIG. 8 is a developed view of the interior, and FIG. 9 is a line diagram showing the cam curve. FIG. 10 is a diagram showing the pressure curve. 1: Cam major diameter section, 2: Discharge port, 3a,
3b: Whisker-shaped V groove, 4: Suction port, 5: Cam minor diameter section, 6: Cam ring, 7: Rotor, 8: Vane, 9a, 9b: Whisker-shaped V groove, 15a, 15b
: End mill groove. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims

【実用新案登録請求の範囲】プレツシヤプレートとサイドプレートとによつ
て両側を挾まれたカムリング内でロータによりベ
ーンを回転させる定容量形のベーンポンプであつ
て、前記両プレートのいずれか一方または双方の
吐出しポートの回転方向前後両側に第１のヒゲ形
Ｖ溝が該吐出しポートと連通して設けられると共
に吸込みポートの回転方向前後両側に第２のヒゲ
形Ｖ溝が該吸込みポートと連通して設けられ、ま
たカム長径区間においては第１と第２のヒゲ形Ｖ
溝ともその先端がベーン間室に対してアンダーラ
ツプでベーン間室内に露出するように、且つカム
短径区間では第１のヒゲ形Ｖ溝がカムリング側面
で遮蔽されて第２のヒゲ形Ｖ溝のみがベーン間室
に露出されるように前記第１と第２のヒゲ形Ｖ溝
が径方向にずらされて配置され、さらに前記吐出
しポートの端縁とそれに向かい合う第２のヒゲ形
Ｖ溝の先端との間の間隔がベーン間室に対してほ
ぼゼロラツプとなるように形成されているものに
おいて、前記両プレートのいずれか一方または双方の吐
出しポートの回転方向前後両側にエンドミル溝が
該吐出しポートと連通して設けられていることを
特徴とする低騒音高圧ベーンポンプ。[Claims for Utility Model Registration] A constant displacement vane pump in which a vane is rotated by a rotor within a cam ring which is sandwiched on both sides by a pressure plate and a side plate, the vane being pumped by either one of the plates or First whisker-shaped V grooves are provided on both front and rear sides in the rotation direction of both discharge ports to communicate with the discharge ports, and second whisker-shaped V grooves are provided on both front and rear sides in the rotation direction of the suction ports. The first and second whisker-shaped V
The tips of the grooves underlap with respect to the inter-vane chamber and are exposed in the inter-vane chamber, and in the cam minor diameter section, the first whisker-shaped V groove is shielded by the side surface of the cam ring, and only the second whisker-shaped V groove is formed. The first and second whisker-shaped V-grooves are arranged radially offset so that the first and second whisker-shaped V grooves are exposed to the intervane chamber, and the edge of the discharge port and the second whisker-shaped V groove facing thereto are The end mill groove is formed so that the distance between the tip and the vane is almost zero lap with respect to the inter-vane chamber, and end mill grooves are provided on both sides of the rotational direction of the discharge port of one or both of the plates. A low-noise, high-pressure vane pump characterized by being provided in communication with a port.