Positioner of chair adjusting device
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Solution Overview
Problem
The existing positioner of chair adjusting devices has a complicated and tedious assembly process, leading to high fabrication costs and a risk of errors during riveting.
Innovation Solution
The positioner is formed by stacking positioning plates with a positioning section, a combination section featuring a recessed cavity and a projecting peg, and a penetration section, allowing for tight fitting and simplified assembly through die stamping and automated stacking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If fastening elements (rivets) are used to penetrate through combination through-holes to combine positioning plates, then the positioning plates can be assembled together, but the assembly operation becomes complicated and tedious, increasing labor cost and fabrication cost
Solution Approach 1:
The invention extracts and eliminates the fastening elements (rivets) and combination through-holes from the design. Instead of using separate fastening components, the positioning plates are directly combined through the projecting peg fitting into the recessed cavity, simplifying the assembly process and reducing the number of parts.
Solution Approach 2:
The invention merges the fastening function into the structural design of the positioning plates themselves. The combination section with the projecting peg and recessed cavity integrates the connection mechanism directly into the plates, eliminating the need for separate fastening elements and simplifying assembly.
2Reliability
If multiple positioning plates are stacked and riveted together using fastening elements, then the positioner structure is formed, but errors easily occur during riveting and labor cost is greatly increased
Solution Approach 1:
The positioning plates are designed to self-align and self-assemble through the projecting peg fitting into the recessed cavity. This self-service mechanism eliminates the need for complex riveting operations, reducing human error and improving assembly reliability while simplifying the operation.
3Ease of manufacture
If combination through-holes are provided in positioning plates for fastening elements, then the plates can be connected, but the fabrication process becomes complicated and labor cost increases
Solution Approach 1:
The invention removes the combination through-holes and fastening elements from the design. The connection is achieved through the projecting peg and recessed cavity interface, which eliminates the need for through-holes and separate fastening components, simplifying both structure and manufacturing.
Solution Approach 2:
The combination section with the projecting peg and recessed cavity serves multiple functions: it provides structural connection, alignment, and positioning all in one integrated feature, eliminating the need for separate fastening holes and rivets.
Data Source
AI summary
A positioner of a chair adjusting device is disclosed. The positioner is formed by stacking a plurality of positioning plates together. Each of the positioning plates is formed with a positioning section, a combination section, and a penetration section. The combination section is formed of a recessed cavity recessed from one surface and a projecting peg projecting from an opposite surface, and an outside diameter of the projecting peg corresponds to an inside diameter of the recessed cavity, so that for two of the positioning plates that are stacked together to be respectively on an upper side and a lower side, the projecting peg of the positioning plate on the upper side is receivable into and fit in the recessed cavity of the positioning plate on the lower side to have the two positioning plates that are stacked together on the upper and lower sides combined together through tight fitting.