Clamshell Dock Assembly for Stable Keys and Compact Display Expansion

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Solution Overview

Problem

Existing computing devices with swivel hinge assemblies experience undesirable springiness in their keys, which can interfere with user grip and comfort, especially in tablet orientations, and lack efficient mechanisms for expanding the viewing area without increasing footprint.

Innovation Solution

A computing device assembly featuring a clamshell dock with a swivel hinge assembly that allows the auxiliary display to face forward or backward, and a secure magnetic attachment system for connecting with a computing device, enabling a seamless expansion of the display area and maintaining ergonomic key orientation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a swivel hinge assembly is used in a computing device, then the device can transition between different orientations (tablet, laptop, tent modes), but the keys exhibit undesirable springiness that interferes with user grip and comfort

Engineering Contradiction:
Improveorientation transition capabilityVSAvoidkey grip comfort
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The device is divided into separate functional modules: a keyboard assembly with stabilizing mechanisms and a display assembly with swivel hinge capability. This segmentation allows the keyboard to maintain stable key orientation while the display provides orientation versatility, resolving the contradiction between adaptability and ease of operation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The keyboard assembly incorporates dynamic stabilizing mechanisms including magnets and springs that actively counteract the springiness caused by the swivel hinge. These dynamic elements adjust to maintain key stability during orientation transitions, allowing the system to achieve both versatility and operational comfort.

Inventive Principle:
Principle #15Dynamics

2Area of moving object

If the display area is expanded by adding external displays, then the viewing area increases, but the device footprint increases

Engineering Contradiction:
Improvedisplay areaVSAvoiddevice footprint
Core Design Contradiction:
Area of moving objectVSArea of stationary object

Solution Approach 1:

The auxiliary display is designed to nest against the main display when not in use, similar to a nested doll structure. When expanded, the auxiliary display provides additional viewing area; when collapsed, it occupies minimal space, effectively resolving the contradiction between display area expansion and footprint reduction.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The display expansion is achieved in a dimensional direction that does not increase the device's footprint. The auxiliary display folds out from the side or top edge, utilizing vertical or lateral space rather than expanding the horizontal footprint, thus maintaining a compact form factor while providing expanded display capability.

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

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 provides a comfortable and ergonomic user experience by stabilizing key orientation and allowing seamless expansion of the display area, enhancing usability and mobility without increasing the device's footprint.

Implementation Method 1

a secure magnetic attachment system for connecting with a computing device

Methodology Applied
Scientific EffectMagnetic attachment: Magnetism

Data Source

PatentUS12386389B2Computing device and dock assembly
Publication Date: 2025.08.12 LENOVO (SINGAPORE) PTE LTD
  • US12386389B2 patent drawing
  • US12386389B2 patent drawing
  • US12386389B2 patent drawing

AI summary

An assembly can include a clamshell computing device that includes a display, a keyboard and a side connector; and a clamshell dock that includes an auxiliary display and a side connector that mates with the side connector of the clamshell computing device.