Photoelectric Switch Shell Half Rolling Chamber Light Passage

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Solution Overview

Problem

Conventional photoelectric switches have complex and costly assembly processes due to modular insert bodies, making them inconvenient and expensive to assemble.

Innovation Solution

A photoelectric switch design featuring two shell halves that couple to confine a rolling chamber and define a light passage, with recessed regions and holes for easy assembly and low cost production, while minimizing static interference through destaticization of recessed regions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a modular insert body is used to define a closed light passage, then the tilt switch can have various degrees of sensitivity by replacement, but the assembly becomes relatively inconvenient and the cost increases

Engineering Contradiction:

Improvesensitivity adjustmentVSAvoidassembly complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The housing is divided into a first housing portion and a second housing portion that can be separated and reconfigured. The light passage can be defined by different combinations of these portions, allowing sensitivity adjustment without complex modular insert bodies. Each housing portion contains integrated features (recessed regions, hole wall halves) that simplify assembly when coupled together.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If a modular insert body is used to define a closed light passage, then the tilt switch can have various degrees of sensitivity by replacement, but the cost becomes higher

Engineering Contradiction:

Improvesensitivity adjustmentVSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The functions of the housing and the light passage definition are merged into the housing structure itself through the first and second housing portions. The recessed regions and hole wall halves are integrated features of the housing portions, eliminating the need for separate modular insert bodies and reducing manufacturing cost while maintaining sensitivity adjustment capability through reconfiguration.

Inventive Principle:

Principle #5Merging (Combining)

3Device complexity

If shell halves with recessed regions and hole wall halves are used to confine rolling chamber and define light passage, then assembly becomes easier and cost reduces, but light leakage may occur

Engineering Contradiction:

Improveassembly simplicityVSAvoidlight leakage

Core Design Contradiction:

Device complexityVSObject-generated harmful factors

Solution Approach 1:

The coupled surfaces of the first and second housing portions are provided with destaticized regions that minimize static electricity generation. Additionally, the recessed regions and hole wall halves are precisely configured to align when coupled, creating effective light barriers at critical locations while maintaining overall assembly simplicity.

Inventive Principle:

Principle #3Local quality

4Object-affected harmful factors

If destaticized surfaces are applied to shell halves, then static electricity interference is minimized, but manufacturing process complexity increases

Engineering Contradiction:

Improvestatic interferenceVSAvoidmanufacturing process

Core Design Contradiction:

Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The destaticized regions are extracted as specific localized features on the coupled surfaces of the housing portions, rather than treating the entire housing with complex destaticization processes. This allows standard manufacturing methods to be used for the majority of the housing, with destaticization applied only to critical small areas where static electricity would interfere with the roller or electronic components.

Inventive Principle:

Principle #2Taking out (Extraction)

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 design facilitates easy and cost-effective assembly of the photoelectric switch, reduces light leakage, and minimizes static electricity interference, enhancing the assembly process and operational efficiency.

Implementation Method 1

a light emitter (2) having an emitting portion (21) disposed at an end of a light passage

Methodology Applied

Scientific EffectLight emission: Light Emitting Diode

Implementation Method 2

The roller (4) is disposed between the emitting and receiving portions (21, 31) and is movable between a blocking position to block the light passage and a non-blocking position to unblock the light passage

Methodology Applied

Scientific EffectLight blocking: Absorption (EM radiation)

Data Source

PatentUS9863802B2Photoelectric switch having a first shell half and a second shell half cooperating with a rolling chamber to define a light passage

Publication Date: 2018.01.09 CHOU(CN)

AI summary

A photoelectric switch includes first and second shell halves respectively having first and second coupled surfaces which confront each other along an axis in either a horizontal direction or an upright direction. The coupled surfaces respectively have first and second recessed regions aligned with each other to confine a rolling chamber for a roller to be rollable therein, and define left and right holes at two opposite ends of the rolling chamber, and emitter and receiver accommodating chambers outwardly of the left and right holes for accommodating a light emitter and a light receiver such that a light passage is defined by the left and right holes and the rolling chamber.