Head Protection Lining Segmented Coupling for Fit
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Solution Overview
Problem
Existing head protection interior fittings often fail to provide satisfactory wearing comfort and a secure fit due to limited adaptability to various head shapes and sizes, requiring multiple size models to accommodate different users.
Innovation Solution
The design features a separate first fixing device and neck coupling section, allowing for high adjustability by enabling relative movement between these components, which can contract or expand along their longitudinal direction, thereby improving circumferential adjustment and ensuring a secure fit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If head protection interior fittings are fixed locally on helmet shell with traditional attachment methods, then the structure is simple and easy to manufacture, but the adaptability to various head shapes and sizes is poor
Solution Approach 1:
The head protection interior fitting is divided into multiple independent components: a base section, multiple upper head coupling sections, and multiple neck coupling sections. Each coupling section can move relative to the others, allowing the fitting to be segmented and reconfigured to match different head shapes and sizes while maintaining overall structural integrity.
Solution Approach 2:
The coupling sections are designed with dynamic movement capabilities, allowing them to shift position relative to each other along the circumferential direction. This dynamic adjustment enables the same helmet shell to adapt to various head sizes and shapes without requiring multiple fixed-size models.
2Manufacturing precision
If multiple size models are used to accommodate different users, then the fit precision is improved, but the device complexity and inventory requirements increase
Solution Approach 1:
A single helmet shell with the adjustable interior fitting can serve multiple users with different head sizes and shapes. The universal design allows one model to perform the function of multiple size-specific models through the adjustable coupling sections that can be reconfigured to match individual head measurements.
3Stability of the object's composition
If the carrying strap is locally attached to the head protection, then the structural stability is improved, but the circumferential adjustability is limited
Solution Approach 1:
The carrying strap system is segmented into multiple independent coupling sections (upper head coupling sections and neck coupling sections) that are connected to the base section. Each section can move independently, allowing the strap to adjust circumferentially while maintaining stable connections at multiple points along the helmet shell.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A head protection inner assembly comprises a base section (7) and a length-adjustable neck assembly connected to the base section (7) for resting against the neck of the wearer. At least one neck coupling section (10) is arranged between the neck assembly and the base section (7). The head protection inner assembly also includes a top-head assembly connected to the base section (7) for resting against the top of the wearer's head and at least one first fastening device (22) for local fastening to the head protection. The first fastening device (22) is connected to the top-head assembly at at least one end region and furthermore to the base section (7) by means of at least one top-head coupling section (9). It is designed separately from the neck coupling section (10).The neck coupling section (10) and each adjacent upper head coupling section (9) are formed separately, separated by a separating slot (11) and, in the unassembled state of the head protection interior (2), run at least partially parallel or substantially parallel to each other.