Automatic Chassis Lifting Mechanism for Treadmill Slope Adjustment

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Solution Overview

Problem

Existing flat treadmills lack adjustable running slopes, limiting user flexibility and comfort during exercise.

Innovation Solution

An automatic chassis lifting mechanism for treadmills, comprising an adjustable lifting frame and a push rod motor, allows users to adjust the treadmill slope by rotating the adjustable lifting frame, which is connected to the chassis via rotating bases and supported by wheels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an automatic lifting mechanism with push rod motor is added to enable slope adjustment, then the adaptability of the treadmill is improved, but the device complexity increases

Engineering Contradiction:

Improveslope adjustment capabilityVSAvoidmechanism structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements dynamic slope adjustment by replacing static flat treadmill design with a movable lifting frame that can be dynamically positioned at various angles. The lifting frame rotates around a fixed axis, allowing the running belt to achieve different inclination angles automatically through motor-driven rotation, thus providing dynamic adaptability to user needs.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent replaces manual mechanical adjustment with an automatic push rod motor system. The push rod motor converts rotational motion into linear pushing motion to drive the lifting frame's rotation, substituting complex manual mechanical operations with a simpler electromechanical system that reduces operational complexity while maintaining adjustment functionality.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Volume of moving object

If the automatic lifting mechanism is mounted between upper housing and lower housing, then the treadmill maintains compact design, but the ease of operation may be affected

Engineering Contradiction:

Improveoverall sizeVSAvoidslope adjustment operation

Core Design Contradiction:

Volume of moving objectVSEase of operation

Solution Approach 1:

The patent applies nesting by integrating the push rod motor within the space between the upper housing and lower housing. The motor is positioned in the vertical gap, and its push tube extends to connect with the lifting frame, effectively utilizing the available internal space without increasing the overall footprint of the treadmill.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The automatic lifting mechanism performs slope adjustment autonomously through the push rod motor's automated operation. Once the user inputs the desired slope parameter, the system automatically activates the motor, which self-regulates the lifting frame's rotation to achieve the target angle, eliminating the need for manual cranking or complex mechanical manipulation.

Inventive Principle:

Principle #25Self-service

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

Enables users to conveniently adjust the treadmill slope to their desired level, enhancing exercise comfort and flexibility while maintaining a compact and portable design.

Implementation Method 1

an automatic lifting mechanism is mounted below the lower housing, the automatic lifting mechanism is rotationally connected to the chassis, the slope of the treadmill is adjusted by means of the automatic lifting mechanism, the automatic lifting mechanism comprises an adjustable lifting frame and a push rod motor

Methodology Applied

Scientific EffectElectric motor conversion: Electromagnetic Induction

Implementation Method 2

the push rod motor is internally provided with a push tube, and the bottom of the push tube is rotationally connected to the adjustable lifting frame

Methodology Applied

Scientific EffectMechanical advantage: Mechanical Advantage

Implementation Method 3

rotating bases are mounted on an inner wall of the chassis close to the lower housing, and the adjustable lifting frame is rotationally mounted on the rotating bases

Methodology Applied

Scientific EffectRotation:

Data Source

PatentUS12318658B1Automatic chassis lifting mechanism for treadmill

Publication Date: 2025.06.03 WUYI RUTONG LEISURE PROD CO LTD

AI summary

The present disclosure provides an automatic chassis lifting mechanism for a treadmill, including a chassis, where an upper housing is mounted at an upper end of an upper surface of the chassis, a lower housing is mounted at a position of a lower surface of the chassis corresponding to the upper housing, a running belt is rotationally mounted at the center of the upper surface of the chassis, an automatic lifting mechanism is mounted below the lower housing, the automatic lifting mechanism is rotationally connected to the chassis, and the slope of the treadmill is adjusted by means of the automatic lifting mechanism. The automatic lifting mechanism includes an adjustable lifting frame and a push rod motor, the adjustable lifting frame is rotationally arranged at a position of the bottom of the chassis close to the lower housing.