Stroller Calf Rest Adjustment Mechanism
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Solution Overview
Problem
Conventional stroller calf rest adjusting structures are complex, costly, and heavy due to the use of independent components like rivets and springs, which complicate the mechanism and increase weight.
Innovation Solution
A seat module with a simplified design where the operating member, pivotally connected to the calf rest, incorporates an elastic portion and a second engaging portion that interacts with a first engaging portion on the seat body, allowing the calf rest to be adjusted by compressing the elastic portion and disengaging the second engaging portion, eliminating the need for additional rivets and springs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional independent components (rivet, spring, operating member) are used in the calf rest adjusting structure, then the calf rest can be adjusted, but the structure becomes complicated, cost increases, and weight increases
Solution Approach 1:
The operating member and spring are integrated into a single operating member component. The operating member includes an operating body, elastic portion, and engaging portion all formed as one piece, eliminating the need for separate rivets and springs. This merging reduces structural complexity while maintaining the calf rest adjustment function.
2Ease of operation
If conventional independent components (rivet, spring, operating member) are used in the calf rest adjusting structure, then the calf rest can be adjusted, but the cost increases
Solution Approach 1:
The operating member integrates multiple functions (operating body for user input, elastic portion for return force, engaging portion for position locking) into a single component. This reduces the number of parts to manufacture, assemble, and inventory, thereby lowering manufacturing cost while maintaining full adjustment functionality.
3Ease of operation
If conventional independent components (rivet, spring, operating member) are used in the calf rest adjusting structure, then the calf rest can be adjusted, but the weight increases
Solution Approach 1:
By consolidating the operating member, spring, and engaging mechanism into a single integrated operating member, the total weight of the adjusting structure is reduced. The integration eliminates redundant materials and connection hardware, achieving weight reduction while preserving the calf rest angle adjustment capability.
4Ease of operation
If the operating member, rivet and spring are all independent components, then the calf rest can be adjusted, but the structure is complicated
Solution Approach 1:
The patent merges the operating member, spring, and engaging portion into a single integrated operating member component. This reduces the number of discrete components from three (operating member, rivet, spring) to one, simplifying the overall structure while maintaining the ability to adjust the calf rest angle.
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
This solution simplifies the structure, reduces weight and cost, while enabling smooth adjustment of the calf rest angle, maintaining stability and ease of use.
Implementation Method 1
the elastic portion is compressed to deform elastically
Implementation Method 2
the elastic portion returns the operating member
Data Source
AI summary
A transportation device includes a frame and a seat module. The seat module includes a seat body, a calf rest and an operating member. The seat body is pivotally connected to the frame and the seat body has a first engaging portion. The calf rest is pivotally connected to the seat body. The operating member has a press portion, an elastic portion, a pivotal portion and a second engaging portion. The operating member is pivotally connected to the calf rest by the pivotal portion. The elastic portion abuts against the calf rest. The second engaging portion engages with the first engaging portion, such that the calf rest is kept at a predetermined position.