Smoke Detector Element Mounting Frame for Easier Optical Sensor Assembly
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Solution Overview
Problem
The existing smoke detectors require time and labor to accurately attach light emitting and light receiving elements to a smoke detection unit body, necessitating a technique for easier attachment.
Innovation Solution
An element placement unit with integrally formed conductive electrode portions on a common frame body for attaching and electrically connecting light emitting and light receiving elements, facilitating easier placement and electrical connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If light emitting element and light receiving element are directly attached to smoke detection unit body, then electrical connection is achieved, but attachment process becomes time and labor consuming
Solution Approach 1:
The invention divides the attachment process into two independent stages: first, elements are attached to the element placement unit (which has pre-formed electrode portions); second, the element placement unit is attached to the smoke detection unit body. This segmentation allows the elements to be mounted on a separate carrier with built-in electrical connections, eliminating the need for separate wiring operations and reducing attachment time while ensuring reliable electrical connectivity.
Solution Approach 2:
The element placement unit serves as an intermediary carrier between the light emitting/receiving elements and the smoke detection unit body. It includes pre-formed electrode portions that provide electrical connections, acting as a mediator that simplifies the overall attachment process. The intermediary carries the elements to the final position and maintains electrical connectivity throughout the assembly process.
2Manufacturing precision
If elements are attached to narrow attachment portion in smoke detection unit body, then precise positioning is achieved, but attachment becomes difficult and time consuming
Solution Approach 1:
The invention separates the positioning function from the attachment location. The element placement unit provides a dedicated mounting area with appropriate size and geometry for easy element attachment, while still enabling precise positioning within the smoke detection unit body through the design of the placement unit itself. This segmentation allows operators to work on a convenient carrier rather than in constrained spaces.
Solution Approach 2:
The element placement unit extends the attachment space from a narrow portion in the smoke detection unit body to a more accessible dimension. By providing a separate carrier structure, the invention creates an additional dimensional space for element mounting, making the attachment process easier while maintaining precise positioning capabilities through the placement unit's design.
3Reliability
If separate electrode portions are used for light emitting and light receiving elements, then electrical connection is achieved, but device complexity increases
Solution Approach 1:
The invention merges the electrode portions for both light emitting and light receiving elements into a single integrated element placement unit. The placement unit includes multiple electrode portions formed on the same carrier structure, eliminating the need for separate wiring operations for each element. This combining approach maintains reliable electrical connections while reducing the overall number of components and simplifying the device structure.
Solution Approach 2:
The element placement unit serves multiple functions simultaneously: it acts as a carrier for both light emitting and light receiving elements, provides electrical connections for both elements through its integrated electrode portions, and serves as the attachment interface to the smoke detection unit body. This multi-functionality reduces device complexity by eliminating the need for separate components for each function.
Data Source
AI summary
An element placement unit for placing a light emitting unit and a light receiving unit of a smoke detector that detects smoke by receiving scattered light caused by a scattering of light from the light emitting unit by the smoke, using the light receiving unit, includes: a light emission-side electrode portion having conductivity for placing the light emitting unit while electrically connecting the light emitting unit; and a light reception-side electrode portion having conductivity for placing the light receiving unit while electrically connecting the light receiving unit.