Sliding Apparatus Sloped Surface Reducing Opposing Force

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Solution Overview

Problem

The existing sliding apparatus for electronic devices, such as imaging apparatuses and portable telephones, faces issues with excessive opposing force during the opening and closing operations, leading to decreased operability and user experience due to the configuration of cam grooves and sloped surfaces.

Innovation Solution

A sliding apparatus with a substrate, a slide plate, a hole part, a sloped surface, a slide guiding part, and a restricting part that controls the movement of the slide plate, featuring a sloped surface and a slide guiding part to reduce opposing forces and enhance operability by adjusting the angle and movement of the slide plate during opening and closing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If two pairs of left/right cam grooves with lifting function are provided, then the cover can be positioned on the same plane as the main body and achieve superposition positioning, but excessive opposing force is exerted to the closing direction end and sloped parts

Engineering Contradiction:
Improvecover positioning stabilityVSAvoidopposing force
Core Design Contradiction:
Stability of the object's compositionVSForce

Solution Approach 1:

The patent extracts the lifting function from the cam grooves and implements it through a separate lifting groove structure. The cam grooves are reduced to a single pair, and the lifting action is achieved through the interaction between the lifting protrusion and the lifting groove with sloped surfaces, rather than relying on the cam groove's lifting function. This separation reduces the opposing force while maintaining positioning stability.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent segments the guiding function and lifting function into separate structural elements. The cam grooves are dedicated to guiding lateral movement, while the lifting groove with sloped surfaces handles the lifting action. This functional segmentation allows each component to be optimized independently, reducing the opposing force exerted on the closing direction end.

Inventive Principle:
Principle #1Segmentation

2Speed

If two pairs of left/right cam grooves are provided, then lifting function is achieved, but operation opposing force in direction opposite to opening direction becomes excessive

Engineering Contradiction:
Improveopening speedVSAvoidoperation opposing force
Core Design Contradiction:
SpeedVSForce

Solution Approach 1:

The lifting function is extracted from the cam grooves and implemented through a dedicated lifting groove structure with sloped surfaces. This allows the cam grooves to focus solely on guiding lateral movement with reduced complexity, thereby reducing the operation opposing force while maintaining the opening speed capability.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the geometric parameters of the guiding structure by reducing from two pairs of cam grooves to a single pair, and by introducing a lifting groove with specific sloped surface angles. This parameter optimization reduces the opposing force during operation while maintaining the required opening speed.

Inventive Principle:
Principle #35Parameter changes

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 improves operability and commercial practicability by reducing the operation reactive force, enhancing the user experience, and allowing for increased lens diameter designs without mechanical restrictions, while maintaining efficient sliding movements.

Implementation Method 1

a cover spring arranged in the base cover and urging the slide frame in the opening direction

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

a sloped surface part that is formed in the base cover and is engaged with the hole part in the closed position

Methodology Applied
Scientific EffectMechanical engagement: Mechanical Force

Implementation Method 3

a sloped part that is formed in a closing direction end part of the slide guiding part and is sloped in a rear direction

Methodology Applied
Scientific EffectFriction reduction through sloped surface: Friction

Data Source

PatentUS8950940B2Sliding apparatus
Publication Date: 2015.02.10 MITSUBISHI STEEL MFG CO LTD
  • US8950940B2 patent drawing
  • US8950940B2 patent drawing
  • US8950940B2 patent drawing

AI summary

The sliding apparatus includes a substrate fixed to a main body, a slide plate being fixed to a sub-body and being slidable between a closed position and an open position in an opening/closing direction, a hole formed in the slide plate, a sloped surface part being formed in the main body, and being engaged with the hole in the closed position, and including a sloped surface being sloped toward a rear direction in the opening/closing direction, a slide guiding part guiding the slide plate in a sliding direction, a restricting part restricting movement of a closing direction end of the slide plate in the front/rear direction during an initial stage of sliding the slide plate from the closed position to the open position, and a sloped part being formed in a closing direction end of the slide guiding part and being sloped in a rear direction.