Detachable Operation Member Mounting for Light Guide Housings
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Solution Overview
Problem
Existing electronic device mounting methods require welding or complex mold structures, making it difficult to replace operation members without replacing the entire housing and complicating the assembly process.
Innovation Solution
An electronic device design featuring a housing with inward projections and a light guide hole, where the operation member includes holding parts, an erecting part, a transmission part, and receiving parts, allowing secure fixation without welding and simplifying mold structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If welding is used to fix the operation member to the housing, then the fixation strength is improved, but the ease of replacement deteriorates and additional equipment is required
Solution Approach 1:
The housing is segmented into a main body and a separate operation member, connected through a detachable engagement structure. The operation member can be independently removed from the housing by detaching it from the engagement structure, enabling replacement without affecting the housing or requiring welding equipment.
2Strength
If welding is used to fix the operation member to the housing, then the fixation strength is improved, but the device complexity increases due to additional equipment requirements
Solution Approach 1:
The welding process is replaced with a mechanical engagement structure consisting of protrusions and recesses. This mechanical connection achieves sufficient fixation strength without requiring welding equipment, thereby simplifying the assembly process and reducing device complexity.
3Ease of operation
If L-shaped projections or claws are provided on the housing to fix the operation member, then the ease of detachment is improved, but the mold structure complexity increases due to inclined cores
Solution Approach 1:
Instead of providing complex L-shaped projections or claws on the housing that require inclined cores in the mold, the engagement structure is inverted: simple protrusions are provided on the housing while corresponding recesses are formed on the operation member. This inversion simplifies the mold structure while maintaining ease of detachment.
4Ease of manufacture
If holes are provided in the housing to form L-shaped projections, then the mold structure is simplified, but the housing structure complexity increases and holes are created where not desired
Solution Approach 1:
The complex L-shaped projection structure is extracted from the housing design and relocated to the operation member. Only simple protrusions remain on the housing, which can be easily molded without requiring holes or complex inclined cores. The operation member contains the recesses that engage with these simple protrusions.
Data Source
AI summary
An electronic device includes a housing, and an operation member mounted on an inner surface of the housing. The housing includes a projection inwardly projected from a main surface of the housing and a wall erected on the main surface and having a light guide hole through which light passes. The operation member includes a holding part extending along the main surface from the projection to the wall, an erecting part erected from the holding part along the wall, a transmission part engaged with peripheral edges of the light guide hole while being fitted into the light guide hole and configured to transmit the light, and a receiving part configured to receive a user's operation from an outside of the housing.