Stroller Frame Vertical Stability Support Mechanism
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Solution Overview
Problem
Conventional strollers lack an efficient mechanism for transitioning between open and collapsed positions while maintaining stability and accessibility to storage compartments, especially when in a vertical position for easy pushing or pulling.
Innovation Solution
A stroller assembly with a frame that includes a front horizontal bar and a rear horizontal bar, connected by a support system with a joint and support wheels, allowing the frame to fold and unfold while maintaining vertical stability and enabling access to storage compartments when collapsed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the stroller frame is collapsed for storage or transport, then the stroller becomes more compact and easier to store, but the stroller cannot maintain a stable vertical position for easy pushing or pulling
Solution Approach 1:
The support assembly is designed to dynamically change its configuration based on the stroller frame state. When the frame is collapsed, the support arms extend and the support wheel engages the ground to provide vertical stability. When the frame is opened, the support arms retract and the support wheel disengages. This dynamic adaptation allows the stroller to maintain stability in collapsed state while remaining maneuverable in open state.
Solution Approach 2:
The support assembly acts as an intermediary mechanism between the collapsed frame and the ground. It includes support arms that connect to the frame, a joint mechanism for rotation, and a support wheel that contacts the ground. This intermediary structure enables the collapsed frame to achieve vertical stability without requiring the main stroller wheels to be in contact with the ground.
2Stability of the object's composition
If the support wheel contacts the ground when the stroller is in open position, then the stroller gains additional stability, but the support wheel interferes with the storage compartment accessibility and normal stroller operation
Solution Approach 1:
The support assembly dynamically adjusts its position and configuration based on the stroller frame state. In the open position, the support arms are configured to disengage the support wheel from the ground and position the support assembly above the storage compartment, ensuring full accessibility. In the collapsed position, the support arms extend to engage the support wheel with the ground for stability. This dynamic behavior eliminates interference with storage compartment access while maintaining stability when needed.
Solution Approach 2:
The support assembly operates in a different spatial dimension relative to the storage compartment. By positioning the support assembly vertically above the storage compartment when the stroller is in the open position, rather than having it extend horizontally into the storage space, the design allows both the support function and storage compartment accessibility to coexist without interference.
3Ease of operation
If a support mechanism is added to maintain vertical position when collapsed, then the stroller gains stability for easy pushing or pulling, but the device complexity increases
Solution Approach 1:
The support assembly is designed to perform multiple functions: it provides vertical stability when the stroller is collapsed, and it retracts to avoid interfering with storage compartment access when the stroller is open. The same mechanism that enables stability in the collapsed state is configured to automatically disengage and position itself non-intrusively when the stroller is opened, eliminating the need for separate mechanisms for each function.
Solution Approach 2:
The support assembly automatically transitions between its extended stable configuration and retracted non-interfering configuration based on the stroller frame state. The linkage between the support arms and the frame causes the support assembly to self-adjust: when the frame is collapsed, the support arms extend to engage the support wheel; when the frame is opened, the support arms automatically retract and position the support wheel above the storage compartment. This self-service behavior reduces the need for additional control mechanisms.
Data Source
AI summary
A stroller assembly may include a stroller frame, a plurality of wheels, and a support. The stroller frame may include a front horizontal bar and a rear horizontal bar. The stroller frame may be configured to operate between an open position and a collapsed position. The plurality of wheels may be connected to the stroller frame. The plurality of wheels may include one or more front wheels and one or more rear wheels. The support may be connected to the stroller frame. The support may include a first arm, a second arm, and a support wheel. The support and the one or more rear wheels may be configured to support the stroller assembly in a substantially vertical position when the stroller frame is in the collapsed position.