Air Conditioning Register Cam Member Extraction
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Solution Overview
Problem
The existing air conditioning register for vehicles faces interference issues between the cam member and surrounding parts, and has poor visual quality due to the presence of holes in the case walls, which affects the appearance and functionality.
Innovation Solution
A register for air conditioning with a cylindrical case having orthogonal wall parts, where auxiliary fins rotate about fin shafts supported by bearing parts, and a cam member is rotationally arranged outside the case, reducing the need for holes in the case walls and minimizing interference, while maintaining the ability to adjust air direction effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the cam member is arranged inside the case to actuate the auxiliary fins, then the structure is compact, but the cam member interferes with surrounding parts and reduces visual quality due to holes in the case walls
Solution Approach 1:
The cam member is extracted from the interior space of the case and arranged on the exterior surface. This removes the interference problem with surrounding parts inside the case and eliminates the need for holes in the case walls that would compromise visual quality. The cam member is positioned on the outer surface of the case where it can actuate the auxiliary fins through the case wall without creating harmful interference.
Solution Approach 2:
The cam member is relocated from the internal three-dimensional space to the external two-dimensional surface of the case. This dimensional change allows the cam member to function effectively while avoiding interference with internal components and maintaining the aesthetic appearance of the case by eliminating through-holes.
2Ease of operation
If multiple holes are provided in the case walls for transmission shafts and cam members, then the fins can be actuated, but the visual quality and appearance of the case deteriorates
Solution Approach 1:
The cam member is extracted from the case interior and positioned on the exterior surface. This eliminates the need for holes in the case walls for cam member installation, thereby preserving the visual quality and appearance of the case while still enabling fin actuation through the case wall.
3Manufacturing precision
If the auxiliary fins are arranged near the second wall parts, then the air flow directivity is improved, but the fin shafts require support structures that complicate the case design
Solution Approach 1:
The bearing parts that support the fin shafts are merged with the case structure itself. The bearing parts are formed as integrated features of the case, eliminating the need for separate support structures and simplifying the overall design while maintaining precise positioning of the auxiliary fins near the second wall parts for optimal air flow directivity.
Data Source
AI summary
Each fin shaft of auxiliary fins passes through each of upper and lower bearing parts in a first wall part. A pair of transmission shafts provided for the upper and lower fin shafts is arranged outside of the first wall part. A cam member is rotationally arranged outside of the first wall part. A fin shaft of a main fin is rotationally supported by the first wall part. The fin shaft of the main fin has an arm and a transmission shaft. The cam member has cam holes in which the transmission shafts of the upper auxiliary fin are fitted, cam holes in which the transmission shafts of the lower auxiliary fin are fitted, and a long hole in which the transmission shaft of the fin shaft of the main fin is fitted.