Fixing structure for heat source element and heat conducting member, and method of fixing heat source element and heat conducting member
AssigneeAisin Aw Co., Ltd.
InventorsYoichiro Taka, Masashi Takano, Tarou Aikawa
Life of this patent
Estimating the term…
Abstract
An electronic device mounted on a circuit board and accommodated in a housing includes a heat source element accommodated in the housing and mounted on the circuit board, and a heat conducting member accommodated in the housing. The heat conducting member is movably mounted on the circuit board. An elastic member fixes the heat source element and the heat conducting member in abutment with each other. The elasticity of the elastic member permits variations in the relative positions of the heat source element and the heat conducting member while maintaining the abutment of the heat source element and the heat conducting member.
Claims16
An electronic device mounted on a circuit board and accommodated in a housing, the electronic device comprising:
- a heat source element accommodated in the housing and mounted on the circuit board;
- a heat conducting member accommodated in the housing, the heat conducting member being movably mounted on the circuit board;
- an elastic member fixing the heat source element and the heat conducting member in abutment with each other, the elasticity of the elastic member permitting variations in the relative positions of the heat source element and the heat conducting member while maintaining the abutment of the heat source element and the heat conducting member;
- and
- a plurality of heat radiating fins provided on the heat conducting member, each of the plurality of heat radiating fins having a notched portion, each notched portion extending along an insertion direction in which the elastic member is inserted onto the heat conducting member, each notched portion having a width in a direction substantially perpendicular to the insertion direction that is larger than a width of the elastic member in the direction substantially perpendicular to the insertion direction, the width of a first notched portion provided in the heat radiating fin that is first approached by the elastic member when the elastic member is inserted onto the heat source element being smaller than the width of a second notched portion that is second approached by the elastic member when the elastic member is inserted onto the heat source.
A method of fixing a heat source element and a heat conducting member that are mounted on a circuit board and accommodated in a housing, the method comprising:
- moving the heat conducting member toward the heat source element;
- abutting the heat conducting member against the heat source element;
- and
- fixing the heat source element and the heat conducting member in abutment with each other with an elastic member, the elasticity of the elastic member permitting variations in the relative positions of the heat source element and the heat conducting member while maintaining the abutment of the heat source element and the heat conducting member;
- wherein the heat conducting member includes a plurality of heat radiating fins, each of the plurality of heat radiating fins having a notched portion, each notched portion extending along an insertion direction in which the elastic member is inserted onto the heat conducting member, each notched portion having a width in a direction substantially perpendicular to the insertion direction that is larger than a width of the elastic member in the direction substantially perpendicular to the insertion direction, the width of a first notched portion provided in the heat radiating fin that is first approached by the elastic member when the elastic member is inserted onto the heat source element being smaller than the width of a second notched portion that is second approached by the elastic member when the elastic member is inserted onto the heat source.
Dependencies are inferred from the claim text.