Belt-Driven Exercise Machine Resolving Gear Noise and Jerk

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Solution Overview

Problem

Existing vibration fitness machines generate only one type of vibration and produce unsmooth, noisy movements due to motor-driven gear transmission.

Innovation Solution

An exercise machine comprising a motor, two transmission devices, and multiple belts that drive both transmission devices to provide users with both vibration and back-and-forth movement, mimicking natural walking motion by activating pelvic and core muscles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-generated harmful factors

If motor-driven gear transmission is used to generate vibration, then vibration can be produced, but the movement becomes unsmooth and noisy

Engineering Contradiction:

Improvenoise and movement smoothnessVSAvoidgear transmission structure

Core Design Contradiction:

Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The patent removes the gear transmission structure from the system and replaces it with a belt-driven mechanism. This extraction of the problematic gear component eliminates the source of noise and unsmooth movement while preserving the vibration generation function through the belt-driven eccentric weight mechanism.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent substitutes the mechanical gear transmission system with a belt-driven mechanical system. This replacement maintains the ability to transmit motor power to generate vibration while eliminating the harmful effects of gear meshing, such as noise and jerky movement, thereby improving overall system smoothness.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If a single motor drives gears to generate vibration, then vibration can be achieved, but only one type of vibration is produced

Engineering Contradiction:

Improvevibration type varietyVSAvoidsingle motor with gear structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent divides the vibration generation function into two separate mechanisms: one for generating vertical vibration (through the first belt-driven eccentric weight) and another for generating horizontal oscillation (through the second belt-driven mechanism). This segmentation allows the single motor to produce multiple types of vibration simultaneously, enhancing exercise versatility without requiring multiple motors.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent employs periodic action by using two different eccentric weights with different rotation speeds and directions. The first eccentric weight rotates at a different speed than the second, creating varied vibration frequencies and patterns. This periodic variation in motion characteristics provides diverse vibration types that stimulate different muscle groups, improving adaptability while using a single motor.

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 machine offers a more effective workout by generating complementary rhythmic vibrations and movements, enhancing muscle activation and oxygenation through synchronized motor-driven transmission devices and belts, reducing noise and improving movement smoothness.

Implementation Method 1

The motor is connected to the first transmission device by a first belt and the first transmission device is connected to the second transmission device by a second belt

Methodology Applied

Scientific EffectBelt transmission:

Implementation Method 2

The first transmission device is driven to generate vibration

Methodology Applied

Scientific EffectVibration: Vibration

Implementation Method 3

The second transmission device is connected to the loading platform for driving the loading platform to move back and forth like a seesaw

Methodology Applied

Scientific EffectBack-and-forth movement:

Data Source

PatentEP3981374B1Exercise machine providing back-and-forth movement and vibration

Publication Date: 2023.02.15 CHANG

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AI summary

An exercise machine which provides back-and-forth movement and vibration is revealed. The exercise machine includes a base and a loading platform in which two sides of a middle portion thereof are pivotally connected to the base. A motor, a first transmission device, and a second transmission device are mounted in the base. The motor drives the first transmission device which further drives the second transmission device. The second transmission device which is connected to the loading platform drives the loading platform to move back and forth while the first transmission device makes the base to have vibration. Thereby the exercise machine generates vibration and back-and-forth movement, allowing users to experience both motions.