Pump mounting structure

Abstract

A pump mounting structure is disclosed. The structure includes a mounting surface on a body having an insertion recess, and at least one mounting member having a mounting portion inserted into the insertion recess. The mounting portion has an outer surface and an insertion hole through which a bolt is inserted. A first gap is formed between the insertion hole and the bolt. A second gap is formed between the outer surface of the mounting portion and an inner surface of the insertion recess. A seal member is disposed on an open side of the insertion recess.

1 . A pump mounting structure, wherein the pump includes a housing, a rotation shaft and a pump portion being housed in the housing, the rotation shaft being rotated by driving force of a driving source, the pump portion being driven along with rotation of the rotation shaft, the rotation shaft being rotatably supported on the housing via a bearing, a plurality of mounting members being provided for the housing, a bolt being inserted into each of the plurality of mounting members and being fastened to a body to be mounted to thereby mount the pump to the body, the structure comprising
 a mounting surface on the body, wherein an insertion recess is formed in the mounting surface, wherein the insertion recess includes an inner surface;   at least one mounting member having a mounting portion inserted into the insertion recess, wherein the mounting portion has an outer surface and an insertion hole through which the bolt is inserted, wherein a first gap is formed between the insertion hole and the bolt, and wherein a second gap is formed between the outer surface of the mounting portion and the inner surface of the insertion recess; and   a seal member disposed on an open side of the insertion recess relative to an area between the mounting portion and the insertion recess into which lubricant is filled.   
     
     
         2 . The pump mounting structure according to  claim 1 , wherein the bolt and the mounting portion move relative to each other in accordance with a difference between deformation amount of the housing and deformation amount of the body. 
     
     
         3 . The pump mounting structure according to  claim 1 , wherein a groove is formed in the mounting portion and the seal member is mounted to the groove. 
     
     
         4 . The pump mounting structure according to  claim 1 , wherein the pump is an electric roots-type pump. 
     
     
         5 . The pump mounting structure according to  claim 1 , wherein the pump is mounted to a body forming a fuel cell system mounted in a fuel cell powered vehicle.