Directional Height Adjustment Mechanism for Stroller Stability
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Solution Overview
Problem
Strollers face challenges in maintaining stability and comfort as the seat height needs to be adjusted for different directions, with the risk of overturning when facing forward and discomfort when facing backward, due to existing height adjustment mechanisms.
Innovation Solution
A transportation device with a frame and carrier system that includes a rail, fixing base, unlock member, and sliding member, allowing the carrier to adjust height differently based on direction, using engaging holes and retaining walls to restrict or allow height adjustments depending on the direction, ensuring safety and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the seat height is adjusted higher when facing forward, then the user can be closer to the child, but the stroller becomes unstable and difficult to pass the stability test
Solution Approach 1:
The patent applies local quality by providing different height adjustment capabilities for different directions. When the carrier faces forward, the height adjustment is restricted to lower positions for stability. When facing backward, higher positions are allowed for user convenience. This is achieved through the directional rib structure that interacts with sliding members to enable or disable height adjustment based on carrier orientation.
Solution Approach 2:
The patent implements dynamics by making the height adjustment capability conditional rather than fixed. The system dynamically adapts the available height range based on the carrier's facing direction. The rib and sliding member mechanism automatically enables or disables certain height positions depending on whether the carrier is facing forward or backward, providing adaptive stability control.
2Stability of the object's composition
If the seat height is adjusted lower when facing backward, then the stroller passes stability test, but the user cannot be close enough to the child for comfort
Solution Approach 1:
The patent applies local quality by providing different height adjustment capabilities for different directions. When the carrier faces forward, the height adjustment is restricted to lower positions for stability. When facing backward, higher positions are allowed for user convenience. This is achieved through the directional rib structure that interacts with sliding members to enable or disable height adjustment based on carrier orientation.
3Device complexity
If a fixed height adjustment mechanism is used, then the structure is simple, but it cannot adapt to different directions and compromises either stability or comfort
Solution Approach 1:
The patent implements dynamics by making the height adjustment capability conditional rather than fixed. The system dynamically adapts the available height range based on the carrier's facing direction. The rib and sliding member mechanism automatically enables or disables certain height positions depending on whether the carrier is facing forward or backward, providing adaptive stability control.
Solution Approach 2:
The patent applies self-service through the automatic operation of the height adjustment restriction mechanism. The system self-regulates the available height range based on carrier orientation without requiring user intervention. When the carrier is installed, the rib structure automatically interacts with the sliding members to enable or disable specific height positions based on the facing direction, making the system self-aware of its orientation.
Data Source
AI summary
A transportation device includes a frame and a carrier. The frame includes a rail, a fixing base, an unlock member and a sliding member. The rail has a first engaging hole with a first retaining wall. The unlock member has an engaging portion. An end of the sliding member abuts against the unlock member. The carrier includes a connecting base with a rib. The connecting base is connected to the fixing base to install the carrier on the frame. When the carrier faces a first direction, the rib pushes the sliding member to push the unlock member, such that a length of the engaging portion protruding from the fixing base is reduced. When the carrier faces a second direction, the rib is staggered with the sliding member.