Rotatable Wheel Bezel Structure for Glove-Friendly Non-Circular Devices

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Applying a wheel bezel structure to electronic devices with non-circular bodies is challenging, as conventional methods like using a crown or touch screens can be inconvenient, especially when wearing gloves, and key input devices are difficult to operate effectively.

Innovation Solution

An electronic device with a wheel bezel structure rotatable along a non-circular perimeter, allowing for various inputs and functions through its rotation, even when wearing gloves.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a crown or touch screen is used for input on non-circular devices, then the device can be operated, but the ease of operation deteriorates especially when wearing gloves

Engineering Contradiction:
Improveease of operationVSAvoidhandwear constraint
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent applies a wheel bezel structure with curved rotational interface that can be operated with gloves on. The rotational mechanism allows users to interact with the device by rotating the bezel, which detects rotational direction and magnitude to control device functions. This curved, rotational interface is more compatible with gloved hands compared to flat touch screens or small crowns.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Solution Approach 2:

The wheel bezel acts as an intermediary between the user's hand and the device's control system. It provides a tactile, rotational interface that translates physical hand movements into digital commands, serving as a mediator that works effectively whether the user is wearing gloves or not.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If a crown is used for input, then the device can be controlled, but the ease of operation deteriorates due to small size and difficulty in operation

Engineering Contradiction:
Improveease of operationVSAvoidcrown size
Core Design Contradiction:
Ease of operationVSLength of stationary object

Solution Approach 1:

The patent transitions from a small, linear crown interface to a larger, rotational wheel bezel interface. By adding the dimension of rotation (360-degree movement), the interface provides more operational space and tactile feedback while maintaining a compact form factor. The rotational motion allows for multiple input modes (direction, pressure, duration) within a single interface element.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Ease of operation

If key input devices are used, then specific functions can be activated, but the ease of operation deteriorates for moving screens and general navigation

Engineering Contradiction:
Improveease of operationVSAvoidfunctional versatility
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The wheel bezel structure serves multiple functions: it can rotate to navigate through menus, be pressed to confirm selections, and detect rotational direction for different operations. This multi-functional interface replaces the need for separate key buttons for different operations, providing both specific function activation and general navigation capabilities through a single unified interface.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP4321943B1Electronic device comprising rotatable member
Publication Date: 2025.07.23 SAMSUNG ELECTRONICS CO LTD
  • EP4321943B1 patent drawingFigure 1
  • EP4321943B1 patent drawingFigure 2A~2B
  • EP4321943B1 patent drawingFigure 3

AI summary

Various embodiments of the present disclosure relate to an electronic device and, more specifically, to a rotatable member and an electronic device comprising same. According to various embodiments of the present disclosure, an electronic device comprising: a housing; a display positioned at least partially within a first recess formed in one surface of the housing; and a wheel bezel structure that is rotatable around the display, the wheel bezel structure including a plurality of bezel pieces which are assembled with adjacent bezel pieces through at least one connection member may be provided. Various other embodiments may also be employed.