Rotational Coupling Structure With Anti-Rotation Locking
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Solution Overview
Problem
Existing devices lack efficient and user-friendly mechanisms for attaching and detaching accessories to and from external devices, such as smartphones or tablets, while ensuring secure fastening and preventing accidental detachment.
Innovation Solution
A device with a housing, fastening members, rotation prevention members, and an operation mechanism that allows secure attachment and detachment by rotating the device, utilizing inclined surfaces and sliding members to control the movement of rotation prevention members, ensuring stable coupling and easy detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rotation-based fastening mechanism is used, then secure attachment is achieved, but ease of operation deteriorates due to complex multi-step process
Solution Approach 1:
The fastening mechanism is divided into distinct functional segments: rotation prevention members that engage with receiving portions to prevent accidental detachment, sliding members that move along inclined surfaces to control the fastening process, and operation members that translate user input into precise mechanical actions. This segmentation allows each component to perform its specific function efficiently, making the overall process more manageable and user-friendly.
Solution Approach 2:
The device performs preliminary actions by automatically positioning rotation prevention members into receiving portions during the attachment process, and by using spring members to pre-position components before final fastening. This preliminary positioning ensures that the fastening process proceeds smoothly and reduces the cognitive load on the user, as the system guides the attachment rather than requiring precise manual alignment.
2Reliability
If multiple fastening members are used, then reliability of attachment is improved, but device complexity increases
Solution Approach 1:
Multiple fastening members are merged into an integrated assembly where rotation prevention members, sliding members, and operation members work together as a coordinated system. The housing structure combines these elements into a unified mechanism that attaches to the external device as a single unit, reducing the perceived complexity for the user while maintaining high attachment security through the coordinated action of multiple components.
Solution Approach 2:
The fastening mechanism is designed with universal functionality where the same assembly of components serves multiple purposes: rotation prevention members prevent both accidental detachment and intentional rotation, sliding members control both the attachment and detachment phases, and spring members provide both positioning and resetting functions. This multi-functionality reduces the need for separate dedicated components for each function.
3Reliability
If rotation prevention members are inserted into receiving portions, then accidental detachment is prevented, but ease of operation worsens due to additional insertion step
Solution Approach 1:
The rotation prevention members are designed to automatically engage with the receiving portions of the external device during the attachment process. The sliding members move along inclined surfaces that guide the rotation prevention members into their final positioned state without requiring separate manual insertion actions. This self-service mechanism eliminates the need for users to perform additional insertion steps while maintaining the reliability of preventing accidental detachment.
Data Source
AI summary
A device that is attachable to and detachable from an external device is provided. The device includes a housing, at least one fastening member configured to fasten the housing to the external device by rotation of the housing, at least one rotation prevention member configured to be inserted into a receiving portion of the external device in a state in which the housing fastens to the external device by the at least one fastening member, an operation member configured to move in a first direction by a force applied from the outside, the operation member having a first inclined surface formed at one end extending in the first direction, a first sliding member that includes a second inclined surface facing the first inclined surface, and a third inclined surface inclined in a direction opposite the second inclined surface, the first sliding member being configured to slide in a second direction by a force applied to the second inclined surface from the first inclined surface as the operating member moves in the first direction, and a connecting member that includes a fourth inclined surface adjacent to the third inclined surface, wherein the connecting member is configured to move in a third direction opposite the first direction as the first sliding member slides in the second direction, and is coupled to the at least one rotation prevention member.