Helmet Shield Locking Mechanism with Fixing Unit
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Solution Overview
Problem
Conventional motorcycle helmets lack a secure mechanism to fix the shield in place when it closes the opening, leading to potential unintended opening during wear.
Innovation Solution
A helmet design incorporating a locking support member, a fastening member with a coupling shaft, and a fixing unit that prevents the fastening member from rotating beyond a prescribed angle, ensuring the shield remains securely fastened to the locking support member, utilizing an elastic member for retention and grip portions for easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional shield coupling assembly is used without a fixing unit, then the structure is simple and easy to operate, but the shield may open unintentionally and reliability is poor
Solution Approach 1:
The fixing unit acts as an intermediary component between the fastening member and the shield mount. It includes a fixing protrusion that engages with a fixing groove to prevent excessive rotation of the fastening member, thereby securing the shield in place without requiring complex multi-component locking mechanisms
Solution Approach 2:
The elastic member provides automatic retention by elastically deforming during assembly and then returning to its original state to maintain engagement between components. The fixing unit's protrusion and groove configuration allows the mechanism to self-lock without additional fasteners or complex adjustment procedures
2Reliability
If the fastening member can rotate freely about the coupling shaft, then the ease of operation is high for opening/closing, but the shield cannot be securely fixed in the closed position
Solution Approach 1:
The locking function is localized to specific features on the fastening member (retaining protrusion) and the locking support member (locking groove). This localized engagement provides secure fixation in the closed position while maintaining rotational freedom during the opening/closing transition phases
Solution Approach 2:
The fixing unit is designed to prevent excessive rotation before it can cause unintended opening. The fixing protrusion engages with the fixing groove to create a mechanical stop that counteracts any force attempting to rotate the fastening member beyond the prescribed angle
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents the shield from being arbitrarily opened, ensuring it remains closed and secure during use, enhancing rider safety by maintaining the shield's position regardless of the wearer's actions.
Implementation Method 1
an elastic member for providing elasticity in order to keep the fastening member fastened to the locking support member
Implementation Method 2
a fastening member having one end pivotally rotatably connected to the shield mount via a coupling shaft
Data Source
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AI summary
Disclosed is a helmet including a helmet main body (100) having a front opening (150), a shield (200) having both ends coupled to the helmet main body for opening or closing the opening, a locking support member (300) provided on one side of the opening, a locking unit (400) including a shield mount (410) fixed to the shield, and a fastening member (430) having one end pivotally rotatably connected to the shield mount via a coupling shaft (420) and a remaining end for being fastened to or unfastened from the locking support member, and a fixing unit (500) for preventing the fastening member from being pivotally rotated about the coupling shaft by a prescribed angle or more relative to the shield mount in a state in which the fastening member is fastened to the locking support member, thereby keeping the fastening member fastened to the locking support member.