Child Carrier Handle Height Locking Against Accidental Folding
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Solution Overview
Problem
Conventional child carriers face safety issues due to accidental folding caused by improper handle height adjustment, which can lead to dangerous frame release.
Innovation Solution
A handle height adjusting mechanism with an engaging component featuring a protrusion and blocking portion, along with gear teeth, ensures stable and firm fixation, preventing accidental folding and allowing controlled handle height adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the upper handle rotates freely to adjust handle height, then ease of operation is improved, but reliability deteriorates due to accidental folding
Solution Approach 1:
The patent introduces an engaging component with a protrusion as an intermediary element between the upper fixing base and lower fixing base. This protrusion can be engaged with a first engaging portion to lock the handle height and prevent accidental folding, while allowing controlled rotation for adjustment when disengaged. The blocking portion on the upper fixing base acts as a safety intermediary to prevent excessive rotation that could lead to frame release.
Solution Approach 2:
The system transitions from a static locked state to a dynamic adjustable state and back to locked state. The upper fixing base is designed to rotate within a predetermined angular range when the engaging component separates, allowing controlled handle height adjustment. The blocking portion dynamically blocks rotation beyond this range, maintaining reliability while enabling ease of operation within safe limits.
2Adaptability or versatility
If the upper handle is linked with frame releasing mechanism, then adaptability is improved for folding, but safety deteriorates due to accidental frame release
Solution Approach 1:
The blocking portion is preliminarily positioned on the upper fixing base to prevent harmful excessive rotation before it can occur. This blocking feature acts in advance to stop the upper fixing base from rotating beyond the predetermined angular range, thereby preventing accidental engagement with the frame releasing mechanism and subsequent frame folding.
Solution Approach 2:
The engaging component with protrusion serves as an intermediary safety mechanism between the handle adjustment operation and the frame releasing mechanism. When properly engaged, it mediates the rotation to stay within safe limits, preventing direct transmission of excessive rotational force to the frame releasing mechanism that would cause accidental folding.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances safety by preventing accidental frame folding and enabling easy, controlled handle height adjustment, ensuring secure operation.
Implementation Method 1
a gear that is designed to be complementary to the first internal gear and the second internal gear and arranged between the two joint parts. In a locked state, the gear is in engagement with the first internal gear and with the second internal gear
Implementation Method 2
a spring-biased cog member normally engaged between the first and second cog seats
Implementation Method 3
The adjusting piece is turnable to urge the cog member, resisting the force by the spring, to disengage from the second cog seat of the handle
Data Source
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AI summary
A handle height adjusting mechanism (1) includes an upper fixing base (11), a lower fixing base (12) pivoted to the upper fixing base (11), and an engaging component (13) movably disposed between the upper fixing base (11) and the lower fixing base (12) and for engaging with the upper fixing base (11) and the lower fixing base (12). The engaging component (13) includes a protrusion (131). The handle height adjusting mechanism (1) can adjust a handle height and prevent accidental folding operation of a child carrier (100) for enhancing safety. The present invention further discloses the child carrier (100) having the handle height adjusting mechanism (1).