Eccentric-Wheel Reciprocating Device for Smooth Vibrating Bed Motion

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional reciprocating devices for vibrating beds face issues such as non-smooth reciprocation, high power consumption, and equipment damage due to the need for motor direction changes and inertial rotation, which affect the comfort and longevity of the device.

Innovation Solution

A reciprocating device featuring an eccentric wheel, pulleys, and a recovery mechanism, where the motor drives the eccentric wheel to rotate in a single direction, using belts to pull the movable base and a reverse force mechanism to achieve smooth reciprocation without changing motor direction, reducing kinetic energy consumption and equipment stress.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the motor drives the wheels to rotate in different directions to achieve reciprocating motion, then the reciprocating effect is achieved, but the motor must switch driving direction and overcome inertial rotation, causing non-smooth reciprocation and equipment damage

Engineering Contradiction:

Improvesmoothness of reciprocationVSAvoidequipment damage risk

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

Instead of having the motor directly drive wheels to rotate in different directions, the invention inverts the approach by having the motor drive a crank mechanism that converts continuous rotation into reciprocating motion of the belt. This eliminates the need for the motor to switch directions, ensuring smooth operation and reducing equipment damage risk

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The invention introduces a crank mechanism as an intermediary between the motor and the belt. The crank mechanism translates the motor's continuous rotation into the desired reciprocating motion of the belt, avoiding direct direction switching of the motor and ensuring smooth reciprocation

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If the motor drives the wheel to continuously rotate in a single direction using a connecting shaft, then the reciprocation is smooth, but too much kinetic energy is consumed on the connecting shaft, resulting in large power consumption

Engineering Contradiction:

Improvesmoothness of reciprocationVSAvoidpower consumption

Core Design Contradiction:

Ease of operationVSUse of energy by moving object

Solution Approach 1:

The invention replaces the connecting shaft mechanical system with a more efficient crank-belt mechanism. The crank mechanism directly couples the motor's rotational motion to the belt's reciprocating motion, reducing kinetic energy consumption and power loss that occurs in the connecting shaft system

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If the motor switches driving direction to achieve reciprocation, then the reciprocating motion is achieved, but the wheel has to overcome inertial rotation, causing non-smooth reciprocation and maintenance issues

Engineering Contradiction:

Improvereciprocating direction controlVSAvoidsmoothness of motion

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

Instead of controlling the motor to rotate in different directions, the invention inverts the approach by using a crank mechanism that converts continuous unidirectional motor rotation into bidirectional reciprocating motion of the belt, eliminating inertial rotation problems and ensuring smooth motion transitions

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The crank mechanism creates periodic reciprocating motion from continuous motor rotation, with the belt naturally accelerating and decelerating in a smooth periodic cycle that eliminates the abrupt direction changes and inertial effects associated with direct motor direction switching

Inventive Principle:

Principle #19Periodic action

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 enables smooth and efficient reciprocation of the vibrating bed or load-bearing member, reducing the risk of equipment damage and power consumption, enhancing user comfort and environmental sustainability.

Implementation Method 1

The eccentric wheel has an eccentric shaft, and is driven by the motor to rotate around the eccentric shaft

Methodology Applied

Scientific EffectEccentric rotation: Eccentric

Data Source

PatentUS10881215B2Device for producing rhythmic movement and vibrating bed having the same

Publication Date: 2021.01.05 TUNG KENG ENTERPRISE CO LTD

AI summary

A reciprocating device applied to a load-bearing member includes a motor, an eccentric wheel, a first pulley disposed on a movable base of the load-bearing member, a first belt, and a recovery mechanism disposed on the movable base. The motor and the eccentric wheel are disposed on a fixed base of the load-bearing member. The eccentric wheel is connected to the motor to be driven to rotate around an eccentric shaft of the eccentric wheel. The first belt surrounds the eccentric wheel and the first pulley. The eccentric wheel is operatively coupled to the first pulley via the first belt. When the eccentric wheel is rotated by the motor, the first pulley and the movable base connected to the first pulley is operatively coupled to the eccentric wheel. The recovery mechanism provides a reverse force to the movable base according to said linkage.