Hood Lock Steel Latch Resin Handle Impact
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Solution Overview
Problem
The existing hood lock devices have varying release handle shapes for different vehicle types, leading to increased production costs and potential damage from repeated impacts at the connecting portions between lever and operation portions made of different materials.
Innovation Solution
A hood lock device with a steel latch main body and a resin handle, where the latch main body is rotatable and includes a forcing meshing portion to alleviate impact on the connecting portion, allowing for uniform design and enhanced durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lever portion and operation portion are made from different members (synthetic resin), then the operation portion can be customized for different vehicle types, but the connecting portion is damaged by repeated impact
Solution Approach 1:
The patent merges the lever portion and operation portion into a single integrated member made of synthetic resin, eliminating the connecting portion between separate parts. This integration removes the weak point where impacts caused damage, while the operation portion can still be customized in shape and size for different vehicle types through molding variations.
2Adaptability or versatility
If the release handle shape varies for different vehicle types, then the operation is adapted to each vehicle, but the production cost increases
Solution Approach 1:
The patent creates a universal operation portion design that can be adapted to different vehicle types through simple dimensional variations rather than completely different structures. The standardized base design with adjustable parameters allows one fundamental component design to serve multiple vehicle applications, reducing development and manufacturing costs.
Solution Approach 2:
The patent achieves vehicle-specific adaptations by changing geometric parameters of the operation portion (such as length, width, curvature) rather than redesigning the entire component. This parameter-based customization allows cost-effective production across different vehicle types using the same basic manufacturing process and material.
Data Source
AI summary
A hood lock device has a base plate having a striker groove, a primary latch configured to fasten a hood in a totally closed state, and a secondary latch, the secondary latch has a latch main body of steel and a handle of resin, and the latch main body has a forcing meshing portion configured to come into engagement with a striker passing across a half opening position and moving to a totally closing position and to be pressed in a latching direction opposite to an unlatching direction by the striker in a case that a hook portion configured to lock the striker recedes from the striker groove and a mounting portion provided adjacent to the forcing meshing portion and on which the handle is mounted.