Snap Hook Clip Insert for Comfortable Child Seat Anchor Release
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Solution Overview
Problem
Installing child safety seats in vehicles is challenging due to the difficulty in accessing anchors located in tight spaces, such as the crevice between the seat and seat back, which can be painful and uncomfortable for users.
Innovation Solution
A snap hook system with a 'J' hook design and ergonomic plastic insert that facilitates easy engagement and disengagement from Isofix or LATCH systems, featuring a plastic gate that provides a comfortable touch-point and insulates against hot metal, reducing discomfort and material waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a metal spring gate is used in standard snap hooks, then the hook can be securely closed, but the user experiences pain and discomfort when pressing the sharp metal spring to remove the hook
Solution Approach 1:
The patent introduces a plastic insert as an intermediary component between the user's finger and the metal spring gate. This insert provides a comfortable, non-sharp surface for the user to press, mediating the interaction and eliminating the harmful sharp edges while still allowing the gate to function properly.
Solution Approach 2:
The patent replaces the durable but harmful metal spring gate with a plastic insert that can be easily replaced. While the insert may wear over time, it provides a comfortable user experience and can be replaced without replacing the entire snap hook assembly, reducing overall cost.
2Strength
If the snap hook is made entirely of metal, then it provides strength and durability, but it becomes hot in vehicle cabins and conducts heat to the user's finger
Solution Approach 1:
The patent creates a composite structure combining metal (for strength) and plastic (for thermal insulation). The metal hook body provides the necessary structural strength, while the plastic insert and gate provide thermal insulation, preventing heat transfer to the user's finger during operation.
Solution Approach 2:
The patent applies different material properties to different parts of the snap hook. The metal portions (hook body, anchor point) are designed for strength and durability, while the plastic portions (insert, gate) are designed for user comfort and thermal insulation. This local differentiation of material quality optimizes both strength and temperature characteristics.
3Ease of manufacture
If the snap hook components are made as separate parts, then manufacturing flexibility and material optimization are improved, but the assembly complexity increases
Solution Approach 1:
The patent divides the snap hook into distinct functional components: a metal hook body, a plastic insert, and a plastic gate. This segmentation allows each component to be manufactured from the most suitable material for its specific function, optimizing both manufacturing ease and performance.
Solution Approach 2:
The patent employs a nested structure where the plastic insert is placed inside the metal hook body, and the plastic gate is integrated with or attached to the insert. This nesting approach minimizes the overall number of separate assemblies while maintaining the benefits of multiple materials and components.
Data Source
AI summary
A snap hook configured to secure a car seat within a vehicle. The restraint system includes a hook body that has a hook at one end and a handle portion at an opposing end. The snap hook further includes a clip insert with a gate. The clip insert is configured to snap fit into an opening defined by the handle portion. The snap hook is configured to attach to the car seat by a belt and/or other suitable attachment device received within a belt opening. The gate extends from the clip insert so that an end of the gate is biased to contact the hook of the hook body. As should be appreciated, the gate is rotatable away from contact with the hook to form a gap. The gap enables a user to secure the snap hook to an anchor point within the vehicle.