Portable Wireless Key Hard Deformable Cover for Switch Operation

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Solution Overview

Problem

Portable wireless keys with reduced size suffer from deteriorated operational feeling due to the movable projection of push-type switches, making it difficult for users to perform locking and unlocking operations effectively.

Innovation Solution

Incorporating a hard deformable cover between the switch operation cover and the push switch, which deforms under pressing force and restores to its original position when released, enhancing the operational feeling without increasing the thickness of the switch operation cover or elastically deformable cover.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the size of the portable wireless key is reduced, then the portability is improved, but the operational feeling of the push-type switch deteriorates

Engineering Contradiction:
Improvesize of portable wireless keyVSAvoidoperational feeling of push-type switch
Core Design Contradiction:
Volume of moving objectVSEase of operation

Solution Approach 1:

The patent introduces a movable projection as an intermediary element between the user's finger and the push-type switch. This projection extends from the switch operation cover and provides a larger surface area for finger contact, allowing users to operate the switch effectively even in a reduced-size key without directly contacting the small switch itself.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent adds a vertical dimension to the switch operation by incorporating a movable projection that can move in the thickness direction of the switch operation cover. This vertical movement provides tactile feedback and improves operational feeling without increasing the horizontal footprint of the switch, thus maintaining the compact size of the key.

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

2Ease of operation

If a hard deformable cover is added between the switch operation cover and the push switch, then the operational feeling is improved, but the device complexity increases

Engineering Contradiction:
Improveoperational feeling of pressing operationVSAvoidstructure of switch assembly
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent merges the hard deformable cover with the switch operation cover as an integrated component. The movable projection is formed as part of the switch operation cover itself, eliminating the need for separate components and reducing assembly complexity while still providing the desired operational feeling through the deformable cover structure.

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 hard deformable cover improves the operational feeling of the pressing operation by ensuring proper deformation and restoration of the movable projection, maintaining the click feeling and reducing the likelihood of oblique pushing, thus enhancing user experience at a low cost.

Implementation Method 1

The hard deformable cover is made of a hard cover material that is capable of being deformed with an application of a pressing force greater than a pressing force that causes deformation of the operation portion. The hard deformable cover is deformed with a depressing deformation of the operation portion when the operation portion is pressed by the user's pressing operation, and is restored to an original position with a restoring deformation of the operation portion

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS9894794B2Portable wireless key
Publication Date: 2018.02.13 DENSO CORP
  • US9894794B2 patent drawing
  • US9894794B2 patent drawing
  • US9894794B2 patent drawing

AI summary

Provided is a portable wireless key that performs a control pertaining to locking and unlocking of a vehicle door lock according to a pressing operation of a movable projection of a push switch and is capable of improving an operational feeling at a low cost. A hard deformable cover is disposed between an operation portion of a switch operation cover and the movable projection of the push switch. The switch operation cover is deformed to be depressed according to a user's pressing operation, and deformed to be restored to an original position when the user's pressing operation is released. Since the hard deformable cover is deformed to press the movable projection with a depressing deformation of the operation portion by the user's pressing operation, the operational feeling of the movable projection can be improved at a low cost.