公开(公告)号：US20150152865A1

公开(公告)日：2015-06-04

申请号：US14552719

申请日：2014-11-25

Applicant: DENSO CORPORATION ,  Nippon Soken, Inc. ,  Advics Co., Ltd.

Inventor： Takashi HASHIBA ,  Naoki HAKAMADA ,  Kazunori UCHIYAMA ,  Takahiro NAGANUMA ,  Tomoaki KAWABATA ,  Kunihito ANDO

IPC: F04C15/00 ,  F04C2/08

CPC classification number: F04C15/0023 ,  F01C19/005 ,  F04C2/10 ,  F04C2/18

Abstract: A gear pump apparatus is equipped with a pump and a sealing mechanism which is made up of an outer member, an inner member, and a rubber member fit between the outer and inner members. The inner member has a pressure-exerted surface to which pressure, as produced by contact of the rubber member with the inner member arising from application of discharge pressure of the pump, is applied. The pressure-exerted surface has a flange which creates thrust to move the inner member away from the gear pump, thereby bringing the inner member against an inner wall of a pump casing to develop a hermetical seal between a high-pressure region and a low-pressure region within the pump casing. This eliminates the leakage of pressure and ensures torque required for a pumping operation of the pump.

Abstract translation: 齿轮泵装置配备有泵和密封机构，其由外部构件，内部构件和配合在外部构件和内部构件之间的橡胶构件构成。 内部构件具有施加压力的表面，通过施加泵的排出压力而产生的橡胶构件与内部构件的接触产生的压力。 压力施加的表面具有凸缘，其产生推力以使内部构件远离齿轮泵，从而使内部构件抵靠泵壳体的内壁，以在高压区域和低压区域之间形成气密密封， 泵壳内的压力区域。 这消除了压力的泄漏，并确保泵的泵送操作所需的扭矩。

公开(公告)号：US20180112662A1

公开(公告)日：2018-04-26

申请号：US15558675

申请日：2016-04-27

Applicant: ADVICS CO., LTD.

Inventor： Takashi HASHIBA ,  Naoki HAKAMADA ,  Takahiro NAGANUMA ,  Tomoaki KAWABATA

IPC: F04C15/00 ,  F04C2/08

CPC classification number: F04C15/0026 ,  F04C2/084 ,  F04C2/086 ,  F04C2/102 ,  F04C15/06 ,  F04C2230/602 ,  F04C2230/92 ,  F04C2240/20 ,  F04C2240/30 ,  F04C2270/17

Abstract: In the present invention, polishing lines 71f are connected to an outer circumferential high-pressure region, but are not connected to each area that is a low-pressure region. In this configuration, the polishing lines 71f are connected to the outer circumferential high-pressure region where there is high discharge pressure, so high-pressure brake fluid is introduced within the polishing lines 71f. Therefore, a pushback effect is obtained, wherein gear pumps 19 and 39 are pushed back on the basis of the high-pressure brake fluid pressure. Furthermore, the polishing lines 71f are connected to the outer circumferential high-pressure region but are not connected to each area that is a low-pressure region, so high-pressure can be maintained within the polishing lines 71f, and a reduction in the pushback effect can be prevented. Accordingly, a decrease in the loss torque reduction effect can be prevented, and the loss torque can be further reduced.