Biasing Member Buckle Assembly for Child Safety Seat
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Solution Overview
Problem
Existing child safety seats face difficulties in securely positioning and removing children due to complex harness assemblies and buckle mechanisms, which can cause discomfort and are challenging to access, especially for infants and unwilling children.
Innovation Solution
A child safety seat harness assembly with a buckle assembly that includes a biasing member, such as a closed loop of material, to bias the buckle away from the back portion when disengaged, allowing easier insertion and removal of children, featuring a buckle pad for cushioning and a buckle webbing that secures the buckle to the seat portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the harness assembly and buckle assembly are manually arranged to facilitate initial placement of a child, then the ease of operation is improved, but the device complexity increases and time is lost
Solution Approach 1:
The buckle assembly is designed to dynamically change position between a first position (away from the back portion) and a second position (engaged state). The biasing member enables automatic movement between these positions, eliminating the need for manual arrangement and reducing operational complexity while maintaining ease of use.
Solution Approach 2:
The biasing member automatically positions the buckle assembly in the first position away from the back portion, enabling self-service functionality. The system self-adjusts without requiring manual intervention to facilitate child placement, thereby improving ease of operation without increasing device complexity.
2Ease of operation
If the buckle assembly is positioned away from the back portion, then the ease of operation is improved, but the stability of the object's composition changes
Solution Approach 1:
The buckle assembly transitions between a stable first position (away from back portion, facilitated by biasing member) and a stable second position (engaged state with shoulder straps). This dynamic positioning provides both accessibility when disengaged and stability when engaged, resolving the contradiction between ease of operation and positional stability.
Solution Approach 2:
The biasing member acts as a counterbalancing mechanism that maintains the buckle assembly in the first position away from the back portion. This counteracting force ensures stable positioning when disengaged while allowing easy transition to the engaged state, balancing accessibility and stability requirements.
3Reliability
If the harness assembly is configured to securely retain an occupant, then the reliability is improved, but the ease of operation deteriorates due to difficult manipulation
Solution Approach 1:
The automatic positioning mechanism enabled by the biasing member simplifies the manipulation of the harness assembly. The buckle assembly automatically moves to facilitate child placement and removal, maintaining secure retention when engaged while significantly improving ease of operation during harness manipulation.
Solution Approach 2:
The biasing member enables the harness assembly to self-adjust and position itself, reducing the manual manipulation required by users. This self-service functionality maintains reliable occupant retention while eliminating the difficulty of harness manipulation, as the system automatically facilitates proper positioning.
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
The solution simplifies the process of securing and releasing children from the seat, reducing discomfort and making it easier for users to access the buckle, enhancing safety and usability by configuring the harness assembly between engaged and disengaged states.
Implementation Method 1
a biasing member engaged with the buckle pad. The biasing member is configured to bias the buckle assembly toward a first position away from an occupant of the child safety seat in the disengaged state
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
A harness assembly for a child safety seat is provided that is configurable between an engaged state and a disengaged state. The harness assembly may include a plurality of shoulder straps, each having a buckle tab. The harness assembly may further include a buckle assembly having a buckle that can receive the buckle tabs for securing the shoulder straps in the engaged state. The buckle assembly may also include a buckle pad, at least a portion of the buckle pad being generally aligned with and adjacent to the buckle. A buckle webbing may extend from the buckle for attaching the buckle to the child safety seat, and a biasing member may be engaged with the buckle pad to bias the buckle assembly toward a first position away from an occupant of the child safety seat in the disengaged state. A corresponding child safety seat is also provided.