JPS62165491U

JPS62165491U -

Info

Publication number: JPS62165491U
Application number: JP5219486U
Authority: JP
Priority date: 1986-04-09
Filing date: 1986-04-09
Publication date: 1987-10-21

Description

[Brief explanation of the drawing]

第１図は、本考案における一実施例としての歯
車ポンプを側断面図によつて示したものであり、
第２図は、第１図においてケーシング３の部分か
ら側板４の側を切り離した状態のイイ断面図を示
し、第３図は、第１図における中板５のみのロ矢
視図を示したものである。実施例に使用した符号は下記のとおりである。
１：駆動軸、１ａ：ヘリカル歯車、１ｂおよび１
ｃ：歯車、２：被動軸、２ａおよび２ｂ：歯車、
３：ケーシング、４：側板、３ｂおよび４ｂ：歯
車室、５：中板、５ａおよび５ｃ：溝。 FIG. 1 shows a side sectional view of a gear pump as an embodiment of the present invention.
FIG. 2 shows a cross-sectional view of the side plate 4 separated from the casing 3 in FIG. 1, and FIG. 3 shows a view of only the middle plate 5 in FIG. It is something. The symbols used in the examples are as follows.
1: Drive shaft, 1a: Helical gear, 1b and 1
c: gear, 2: driven shaft, 2a and 2b: gear,
3: Casing, 4: Side plate, 3b and 4b: Gear chamber, 5: Middle plate, 5a and 5c: Groove.

Claims

[Claims for Utility Model Registration] 1. A gear chamber is cut into the casing, a drive shaft and a driven shaft disposed parallel to the drive shaft are respectively fitted into the casing, and in the gear chamber: , a: a first gear is fitted onto the drive shaft to enable torque transmission, and b: a second gear which is in gear mesh with the first gear is fitted onto the driven shaft. , c: At the position where the first gear and the second gear are engaged, and on the side of the plane connecting each rotation center of the drive shaft and the driven shaft, on one side thereof. In the above configuration, in which a suction chamber for hydraulic oil is provided and a discharge chamber for the hydraulic oil is provided on the other side, a mating seal that is in contact with an axial end surface of at least the first gear or the second gear; The gear pump having the above configuration, wherein the surface is provided with a groove so that the suction chamber and the discharge chamber do not communicate with each other. 2. The gear according to claim 1 of the utility model registration claim, wherein the groove is provided between the teeth of the first gear or the second gear as they pass through the suction chamber and rotate to the discharge chamber. pump. 3. The gear pump according to claim 1, wherein the groove has a shape that goes around the outer circumferential direction of the drive shaft or the driven shaft.