Abstract: A cooling device having a centrifugal pump directly mounted on a radiator. An annular seal member is disposed between the bottom portion of the case body of the centrifugal pump and the side surface of the tank chamber of the radiator, and the annular seal member is used for preventing the cooling medium leakage via a space between the centrifugal pump and the tank chamber. The cylindrical portion of the case body and the annular seal member are overlapped with each other in the axial direction of the rotation center shaft of the motor that drives the centrifugal pump, in order that the cylindrical portion can receive at least a part of the reaction force of the annular seal member crushed between the case body and the tank chamber, and thereby the bottom portion of the case body of the centrifugal pump is prevented from deformation.

Abstract: In the cooling device, an annular seal member (38) for preventing the leakage of the cooling medium from a space between the centrifugal pump (6) and the tank chamber (11) is disposed between the bottom portion (23d) of the case body (23) of the centrifugal pump (6) formed in a bottomed cylindrical shape which has a cylindrical portion (23c) and a bottom portion (23d) and the tank chamber (11) of the radiator (4). Further, in the cooling device, an inner peripheral surface (23r) of the cylindrical portion (23c) connected to a surface of the bottom portion (23d) on a side in an X2 direction overlaps the seal member (38) when seen in an axial direction of a rotation center shaft (30) of a motor (15).

Abstract: A fastening positioning device for a handle of a power supply, including: a power supply having a rectangular outer case; a handle structured from upper and lower arms and a grip; a spring piece; a clasp groove defined on a side surface of the outer case, which enables the protruding portion to clasp therein; shaft pins that respectively penetrate the shaft holes and into the respective pivot joint holes defined in the surfaces of the outer case; whereby the handle is firmly positioned on the outer case without the worry that application of an inappropriate external force will cause malposition of the handle on the outer case, and protruding bulk of the handle positioned to the outer case is considerably reduced.