Adjustable Crotch Buckle Positioner for Growing Child Seat Fit
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Solution Overview
Problem
Conventional child safety seats often lack a mechanism to adjust the position and height of the crotch buckle, making it difficult to maintain a proper fit as children grow, as the existing designs do not accommodate changing child sizes effectively.
Innovation Solution
A crotch belt positioning system with an adjustable panel and actuator mechanism that allows the crotch belt webbing and buckle to be moved to different positions along the seat bottom, enabling adjustments in both the position and length of the crotch belt to ensure a secure and comfortable fit for growing children.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the child safety seat uses a fixed crotch buckle position, then the structure is simple and easy to manufacture, but the seat cannot accommodate growing children and maintains proper fit over time
Solution Approach 1:
The crotch buckle positioner is designed as a movable component that can be adjusted along the seat bottom between multiple predetermined positions. The adjustment mechanism includes a movable panel with apertures and a positioning member that engages with guide rails, allowing the buckle to dynamically adapt to different child sizes while maintaining structural integrity through guided motion paths.
Solution Approach 2:
The adjustment system is divided into discrete segments including multiple predetermined positions along the seat bottom, with the crotch buckle positioner capable of stopping at each position. This segmentation allows for standardized adjustment points that simplify the mechanism while providing adequate accommodation for growing children through discrete position changes.
2Adaptability or versatility
If the child safety seat includes an adjustable crotch buckle mechanism, then it can maintain proper fit as children grow, but the adjustment process becomes time-consuming and difficult
Solution Approach 1:
The crotch buckle positioner incorporates a self-latching mechanism with engagement features that automatically secure the buckle at each predetermined position. When the parent moves the positioner to a desired location, the self-latching mechanism automatically engages with the guide rails and positioning members, eliminating the need for manual fastening operations and making adjustment as simple as moving the component to the appropriate position.
Solution Approach 2:
The system uses intermediary positioning members and guide rails that mediate between the movable crotch buckle positioner and the seat bottom structure. These intermediaries provide predefined stop positions and guide the movement path, allowing parents to easily adjust the buckle to correct positions without requiring precise manual placement or complex alignment procedures.
3Adaptability or versatility
If the crotch buckle is positioned fixedly, then the manufacturing process is simple, but the seat cannot be adjusted to maintain safety and comfort as the child grows
Solution Approach 1:
The crotch buckle positioner serves multiple functions simultaneously: it provides the restraining buckle function, acts as the adjustment mechanism, incorporates the positioning system through engagement with guide rails, and includes the latching mechanism. This multi-functionality consolidates what could be separate components into a single integrated assembly, simplifying the manufacturing process while maintaining adjustability for growing children.
Solution Approach 2:
The invention merges the crotch buckle, the positioner mechanism, the positioning members, and the latching system into an integrated assembly. By combining these functions into a single movable component rather than separate fixed parts, the design reduces the number of individual parts to manufacture and assemble while providing the necessary adjustment capability for different child sizes.
Data Source
AI summary
A child safety seat, such as a car seat, booster seat, stroller seat, or high chair, can include a crotch buckle positioner that provides adjustability for the harness system as the child grows. The seat can include a seat bottom, a seat back, a harness system, and a crotch belt positioner. Crotch belt webbing, including a buckle, can extend up through a portion of the crotch belt positioner and is adjusted by the crotch belt positioner. The crotch belt positioner can be adjusted into multiple positions along the seat bottom. Adjusting the crotch belt positioner from a first position to a second position can adjust at least one of the length of the crotch belt webbing that extends about the top surface of the seat bottom and the position that the relational position that the crotch belt webbing extends up through crotch belt positioner with respect to the seat bottom.