Chair Strap Connector Structure That Covers Sharp Edges
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Solution Overview
Problem
Conventional chair connectors have a sharp edge that can cause discomfort and damage to users' clothing due to their rigid top and protruding design, which contacts the user's buttocks and back.
Innovation Solution
The connector design features a connecting slot through the top, allowing the stretch strap to protrude and cover the sharp edge, preventing contact with the user's body and clothing, with a binder securing the strap ends within the receiving recess.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the connector has a rigid top and sharp edge design, then the connector can securely hold the stretch strap, but the sharp edge contacts the user's body and causes discomfort and clothing damage
Solution Approach 1:
The stretch strap serves as an intermediary element between the connector and the user's body. The strap extends through the connecting slot and protrudes beyond the connector's top surface, creating a soft buffer that contacts the user instead of the sharp edge. This mediator approach allows the rigid connector to maintain its structural integrity and securing capability while the flexible strap absorbs the harmful contact effects.
Solution Approach 2:
The sharp edge, which initially causes harm by contacting the user, is converted into a beneficial feature. The rigid top and sharp edge provide precise positioning and secure retention of the stretch strap, while the strap itself becomes the protective element that contacts the user. The harmful sharp edge is thus transformed into a functional feature that ensures proper strap alignment and tension.
2Reliability
If the connector top protrudes beyond the stretch strap, then the connector can be securely mounted, but the protruding sharp edge rubs and frays the user's clothes
Solution Approach 1:
The stretch strap acts as a protective intermediary between the protruding connector edge and the user's clothing. The strap material, being softer and more flexible than the rigid connector, prevents direct contact between the sharp edge and fabric, thereby eliminating the fraying problem while maintaining the connector's protruding design for secure mounting.
3Strength
If the connector has a rigid top surface, then the connector provides structural support, but the rigid surface causes unease tactile feeling when user contacts it
Solution Approach 1:
The stretch strap serves as a tactile intermediary that replaces the rigid connector surface in contact with the user. The strap's flexible and softer material provides a comfortable tactile experience while the rigid connector maintains its structural support function from behind, unseen and uncontacted by the user.
Data Source
AI summary
A connector for stretch straps of a chair is mounted on the chair to hold and stretch a stretch strap with an opposite connector mounted on the chair and has a receiving recess formed inside the connector and a connecting slot formed through the top of the connector and communicating with the receiving recess. One end of the stretch strap extends through the connecting slot to be held by a binder in the receiving recesses. A bottom of the stretch strap is propped out by a top edge of the connecting slot so that a top of the stretch strap is protrudent relative to the top of the connector and a sharp edge formed between the top and the front end of the connector. Thus, a user's body is prevented from contacting with the rigid top and the sharp edge of the connector to comfortably sit on the chair.