Wedge-Shaped Touch Pad With Integrated Haptic Feedback

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Solution Overview

Problem

Consumer electronic devices with touch-based interfaces often lack effective tactile feedback and ergonomic design, leading to user discomfort and aesthetically unappealing compact enclosures that restrict movement.

Innovation Solution

A standalone input device with a wedge-shaped touch pad that provides haptic feedback and is designed to be aesthetically appealing, featuring a touch surface inclined at an angle for improved user access, made from RF-transparent materials like plastic or ceramic, and incorporating a haptic engine for enhanced tactile experience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If a compact enclosure is used to achieve a sleek and aesthetically appealing design, then the aesthetic appeal is improved, but the range of movement for touch-based interface components is restricted

Engineering Contradiction:
Improveaesthetic appealVSAvoidrange of movement
Core Design Contradiction:
ShapeVSEase of operation

Solution Approach 1:

The patent employs a flexible membrane as the touch-sensitive component, allowing it to be integrated into a compact enclosure while still providing adequate range of movement. The membrane's flexibility enables it to deflect sufficiently for user interaction without requiring a large structural footprint, thus resolving the contradiction between compact sleek design and operational range.

Inventive Principle:
Principle #30Flexible shells and thin films

2Ease of operation

If haptic feedback mechanisms are added to improve tactile feedback, then the tactile feedback is improved, but the device complexity increases

Engineering Contradiction:
Improvetactile feedbackVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent combines the haptic feedback mechanism with the existing touch-sensitive membrane structure. The feedback is generated through the same membrane that detects user input, eliminating the need for separate complex feedback mechanisms. This integration provides improved tactile feedback while minimizing increases in device complexity.

Inventive Principle:
Principle #5Merging (Combining)

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 device enhances user experience through improved ergonomics and aesthetics by providing a comfortable and intuitive tactile input mechanism with haptic feedback, while maintaining wireless communication capabilities and a sleek design.

Implementation Method 1

incorporating a haptic engine for enhanced tactile experience

Methodology Applied
Scientific EffectHaptic feedback: Vibration

Data Source

PatentEP3347796B1Stand alone input device
Publication Date: 2021.03.17 APPLE INC
  • EP3347796B1 patent drawingFigure 1~2
  • EP3347796B1 patent drawingFigure 3
  • EP3347796B1 patent drawingFigure 4A~4B

AI summary

A stand alone input device can be a touch pad that provides touch inputs to an associated computing device. The input device can include a wedge-shaped base defining an inner cavity, a touch plate having a touch surface disposed over the inner cavity and configured to accept a touch input, cantilevered beams coupled to the wedge-shaped base and the touch plate and configured to deliver a force from the touch input, a haptic generator coupled to the cantilevered beams and configured to generate a haptic output in response to the touch input, an antenna component integrated within a wall of the wedge-shaped base and an antenna resonance cavity located within the inner cavity, and a switch assembly including a sliding component having a pin through a wedge-shaped base wall and a switch beam having a protrusion that engages multiple recesses located at a detent region on the sliding component.