Method for manufacturing impeller
AssigneeHonda Motor Co., Ltd.
InventorsHiroshi Ishikawa, Yoshinori Tsurugai, Yasuhisa Saito
Life of this patent
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Abstract
An impeller in which a plurality of vanes are provided so as to overlap each other back and forth as viewed in the direction of axis has a first impeller part on a front side and a second impeller part on a rear side. A method for manufacturing impeller includes a step of molding a first impeller part, a step of molding a second impeller part and a step of combining together the first impeller part and the second impeller part.
Claims12
A method for manufacturing an impeller which is provided so that a plurality of vanes overlap each other back and forth as viewed in a direction of a rotating axis of the impeller, comprising:
- a step of molding a first impeller part which is one of two parts into which the impeller is divided so that each of the plurality of vanes is divided into a front side and a rear side as viewed in the direction of the rotating axis of the impeller;
- a step of molding a second impeller part which is the other of the two parts into which the impeller is divided;
- and
- a step of combining together the first impeller part and the second impeller part into the impeller,
- wherein
- the second impeller part has the plurality of vanes on the rear side and an undercut portion,
- the second impeller part is molded by using a first mold, a second mold and a third mold having a shape which corresponds to the undercut portion, and
- the third mold is released by being rotated about a rotating axis of the second impeller part.
A method for manufacturing an impeller which is provided so that a plurality of vanes overlap each other back and forth as viewed in a direction of a rotating axis of the impeller, comprising:
- a step of molding a first impeller part which is one of two parts into which the impeller is divided so that each of the plurality of vanes is divided into a front side and a rear side as viewed in the direction of the rotating axis of the impeller;
- a step of molding a second impeller part which is the other of the two parts;
- and
- a step of combining together the first impeller part and the second impeller part into the impeller,
- wherein
- the impeller is divided into the first impeller part and the second impeller part, which are divided in the direction of the rotating axis of the impeller via dividing planes of the first impeller part and the second impeller part, and wherein
- the method for manufacturing impeller comprises further:
- a step of inserting a projecting portion of the second impeller part, which is provided to project from the dividing plane of the second impeller part in the direction of the rotating axis of the impeller, into a recess portion of the first impeller part, which is formed in the dividing plane of the first impeller part;
- and
- a step of joining a distal end of the projecting portion of the second impeller part and a deep end of the recess portion of the first impeller part together by imparting vibration energy to the distal end of the projecting portion of the second impeller part from an opposite side thereto via the first impeller part.
An impeller which is provided so that a plurality of vanes overlap each other back and forth as viewed in a direction of a rotating axis of the impeller, and which is formed by joining together a first impeller member and a second impeller member which are divided through each of the plurality of vanes in the direction of the rotating axis of the impeller via predetermined dividing planes of the first impeller member and the second impeller member, comprising:
- a recess portion which is formed in the dividing plane of the first impeller member;
- a projecting portion which is provided to project from the dividing plane of the second impeller member, which is formed into a ring shape which is concentric with the rotating axis of the impeller, and which is inserted into the recess portion;
- and
- a joining portion where a distal end of the projecting portion and a deep end of the recess portion are joined together.
Dependencies are inferred from the claim text.