Outdoor Unit Terminal Block Layout for Front-Side Wiring Access
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Solution Overview
Problem
Existing structures for setting terminal blocks in outdoor air-conditioning units are inflexible, making it difficult to add additional blocks without modifying the existing mounting portion or increasing space, which complicates wiring and limits accessibility for workers.
Innovation Solution
The outdoor unit features terminal blocks arranged vertically, with a second terminal block mounted on a seat that includes a smaller fixed portion and a protruding mounting portion, allowing for easy addition of blocks on the front side without altering the existing mounting portion, enabling efficient wiring and increased accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terminal blocks are arranged horizontally in the existing terminal-block mounting portion, then the mounting portion can accommodate a limited number of terminal blocks, but the space is insufficient when more terminal blocks are needed and greatly modifying the mounting portion is required
Solution Approach 1:
The patent transitions from horizontal arrangement of terminal blocks to vertical arrangement, utilizing the height dimension of the terminal-block mounting portion. This dimensional change allows multiple terminal blocks to be stacked vertically without requiring horizontal expansion or major modifications to the mounting portion structure.
Solution Approach 2:
The terminal-block mounting portion is divided into multiple vertical positions (first, second, third, fourth terminal blocks at different heights), allowing independent installation and configuration of each terminal block. This segmentation enables flexible addition or removal of terminal blocks without affecting the entire mounting structure.
2Ease of manufacture
If terminal blocks are provided on the side of the outdoor unit without greatly modifying the terminal-block mounting portion, then the mounting portion structure is preserved, but wiring cannot be easily carried out
Solution Approach 1:
By arranging terminal blocks vertically at different heights on the front side of the outdoor unit, the patent provides multiple accessible positions for wiring operations. Workers can easily access terminal blocks at various heights without requiring complex routing or disassembly, maintaining ease of operation while preserving the mounting portion structure.
3Reliability
If the fixed portion of the terminal-block seat is the same area as the mounting portion, then the second terminal block can be securely mounted, but space for the first terminal block and wiring is reduced
Solution Approach 1:
The terminal-block seat is designed with non-uniform area distribution: the fixed portion has a smaller area for secure mounting to the mounting portion, while the mounting portion itself extends to a larger area that provides space for the first terminal block and wiring operations. This local quality differentiation optimizes both mounting reliability and space utilization.
Data Source
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AI summary
An outdoor unit of an air-conditioning apparatus has a structure that enables a terminal block to be added on a front side that a worker can easily contact, without greatly changing the location of an existing terminal block and the basic shape of a mounting portion. In a casing of the outdoor unit, a heat exchanger, an outdoor fan, a compressor, and an electrical component are provided. The outdoor unit includes: terminal blocks to be connected to the electrical component; and a terminal-block mounting portion facing from the inside of the casing toward the outside thereof. The terminal blocks are arranged in the height direction of the terminal-block mounting portion, and include first and second terminal blocks on a lower side and an upper side, respectively. The second terminal block is mounted on a terminal-block seat on the terminal-block mounting portion. The above seat includes a mounting portion on which the second terminal block is mounted, and a fixed portion contacting the terminal-block mounting portion. The fixed portion is smaller than the mounting portion, and the mounting portion protrudes from the fixed portion toward the first terminal block.