US 5,853,201 AGranted

Coolant pipe connecting coupling

AssigneeNippondenso Co., Ltd.

InventorsRyouiti Izumi, Kenji Ogura, Soujiro Tsuchiya, Yoshitaka Kuroda, Keiiti Isogai

Life of this patent

Estimating the term…

Loading patent…

Abstract

A coolant pipe connecting coupling in which a coolant passage is bent perpendicularly around a connecting portion has a low height connecting coupling and can reduce manufacturing costs. The coolant pipe connecting coupling includes a fixing block fixed to a connecting object by a bolt and a coolant pipe supported while being inserted into the fixing block. The coolant pipe is bent with an approximately zero bending radius. While at least an inside surface of the bending portion of the bending portion is received by the fixing block, the fixing block and the coolant pipe are fixed together. Therefore, a dimension of a connecting surface of the fixing block and the coolant pipe, that is, the height of the coolant pipe connecting coupling is set to be small. A coolant passage bent perpendicularly is not formed inside the fixing block, but coolant flow is bent perpendicularly by bending of the coolant pipe. Thus, manufacturing cost of the coolant pipe connecting coupling can be reduced.

Claims12

Dependent claims

A coolant pipe connecting coupling comprising:

a fixing block defining a receiving hole, said fixing block also defining a bending receiving portion and a ring receiving portion;
a connecting object securable to said fixing block by a fixing tool, said connecting object defining an inside passage through which fluid can flow;
and
a coolant pipe supported by said fixing block, said coolant pipe having an L-shaped bending portion and a ring seal portion protruding from a periphery of an end of said coolant pipe, said coolant pipe being connected to said inside passage when said fixing block is fixed to said connecting object,
wherein an inside bending portion of said bending portion of said coolant pipe is disposed in said bending receiving portion such that said inside bending portion is lower than a top surface of said fixing block,
said ring seal portion of said coolant pipe is disposed in said ring receiving portion, and
said fixing block is fixed between said inside bending portion and said upper surface of said ring seal portion such that the inside bending portion engages the receiving portion of the fixing block.

4 more elements

Dependencies are inferred from the claim text.