Two-Pole Frame Joining Member With Through Portions to Prevent Rattling
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Solution Overview
Problem
Existing assemblable frames face challenges in connecting pole members efficiently, as conventional joining members often leave a portion unused when connecting three pole members, requiring additional members and leading to obstacles and inefficiencies in assembly and disassembly.
Innovation Solution
A joining member design featuring a first support portion, a second support portion, a first contact portion, and a second contact portion, with through and convex portions for secure fastening, allowing for reliable connection of pole members regardless of their number, preventing rattling and enabling flexible assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional joining members with protruding pole-receiving portions extending along at least three independent axes are used, then the joining member can connect multiple pole members, but the portion provided for the third pole member is exposed in an unused state which constitutes an obstacle in use and requires another joining member
Solution Approach 1:
The patent extracts the unnecessary third pole-receiving portion from the joining member structure. The new joining member is designed with only two support portions for connecting pole members, eliminating the exposed unused portion that caused obstacles. This is achieved by configuring the joining member body with first and second support portions that each have contact portions for securing pole members, without providing a third support portion as in conventional designs.
Solution Approach 2:
The joining member is designed to universally connect pole members through its support portions and contact portions. Each support portion can connect to pole members in different orientations (horizontal or vertical), and the contact portions provide versatile securing mechanisms including through portions for fasteners and convex portions for insertion. This universal design allows the same joining member structure to handle various connection scenarios without requiring different types of joining members.
2Ease of manufacture
If conventional joining members are used to connect only two pole members, then the connection is achieved, but additional joining members are required and the structure becomes less efficient
Solution Approach 1:
The patent merges the functions of multiple conventional joining members into a single optimized structure. The first and second support portions work together to connect pole members efficiently, with each support portion having its own contact portions for securing. This merged structure reduces the total number of joining members needed while maintaining connection reliability, as each support portion is designed to handle connections independently and effectively.
3Reliability
If through portions and convex portions are provided for fastening, then reliable connection is achieved, but the structure becomes more complex
Solution Approach 1:
The patent applies local quality by providing different types of contact portions (through portions and convex portions) at specific locations on the support portions. The through portions are provided on the support portions to allow passage of fasteners for secure attachment, while convex portions are provided to enable insertion and positioning. This localized application of different contact portion types ensures reliable connection only where needed, rather than uniformly across the entire joining member structure.
Data Source
AI summary
A joining member includes a first support portion supporting a first pole member in the longitudinal direction at the bottom surface, a second support portion supporting a second pole member in the longitudinal direction at the bottom surface, a first contact portion located on one side of the first support portion along the longitudinal direction of the first pole member and contacting the first pole member at the side surface, and a second contact portion located on one or the other side of the second support portion along the longitudinal direction of the second pole member and contacting the second pole member at the side surface. The first support portion and/or the first contact portion has a through portion in the bottom surface or the side surface. The second support portion and/or the second contact portion has a through portion in the bottom surface or the side surface.