Safety Seat Support Leg Indicator for Floor Contact Locking
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Solution Overview
Problem
Existing child safety seats lack a convenient mechanism to indicate whether the supporting leg device has touched the vehicle floor, compromising the anti-overturning and anti-impact capabilities and user convenience.
Innovation Solution
A supporting leg device with a mechanism that includes a first tubular member, a second tubular member, a pushing member, a driving member, and an indicating member, which allows the device to be extended and locked in place, and features an indicator assembly that visually signals contact with the floor through different colored areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the supporting leg device is installed on the base of the child safety seat and supported on the floor of the vehicle, then the anti-overturning and anti-impact capability of the child safety seat is enhanced, but it is not convenient for the user to check whether the supporting leg device has touched the floor of the vehicle
Solution Approach 1:
The patent employs a color-changing indicator mechanism where an indicating member with different colored areas (e.g., first color when not contacting floor, second color when contacting floor) visually signals the contact status. This allows users to quickly determine whether the supporting leg device has touched the floor without leaning over, resolving the contradiction between reliability enhancement and ease of checking.
2Adaptability or versatility
If the second tubular member is slidably arranged in the first tubular member to adjust the length of the supporting leg device, then the adaptability to different vehicle floors is improved, but the structural complexity increases
Solution Approach 1:
The patent implements a telescopic structure where the second tubular member is nested within the first tubular member, allowing the supporting leg device to adjust its length to fit different vehicle floor heights. This nested design provides adaptability while maintaining a compact form when retracted, balancing versatility with structural efficiency.
Solution Approach 2:
The supporting leg device is divided into segmented tubular members that can slide relative to each other, enabling length adjustment. The segmentation allows independent movement of each section while maintaining overall structural integrity, achieving adaptability without excessive complexity.
3Stability of the object's composition
If the stage locking member is operably engageable into the stage locking holes to lock the position of the second tubular member, then the stability of the supporting leg device is improved, but the device complexity increases
Solution Approach 1:
The locking mechanism uses a movable stage locking member that can dynamically engage or disengage from the stage locking holes. This dynamic design allows the user to adjust and lock the supporting leg device at different positions while maintaining simplicity in the locking action, achieving stability without excessive mechanical complexity.
Data Source
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AI summary
A supporting leg device for a safety seat is provided, comprising a first tubular member with a plurality of stage locking holes arranged longitudinally, a second tubular member provided with a stage locking member, wherein adjusting the length of the supporting leg device comprises a sliding of the second tubular member relative to the first tubular member, wherein the stage locking member is operably engageable into one of the plurality of the stage locking holes, so as to lock a position of the second tubular member relative to the first tubular member; a pushing member, movable vertically relative to the first tubular member, and having a plurality of engaging holes arranged longitudinally, a driving member configured to move vertically relative to the second tubular member and including an upper end provided with an engaging hook operably engageable into one of the engaging holes of the pushing member, so as to form a linkage between the driving member and the pushing member; and an arrangement structure that disengages the stage locking member from the stage locking hole and also disengages the engaging hook from the engaging hole, so that the second tubular member is slidable relative to the first tubular member.