Treadmill Screw Rod Mechanism for Low-Cost Slope Adjustment

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing treadmills with motor-driven slope adjustment mechanisms are costly due to complex mechanical and circuit structures, leading to high maintenance and repair expenses.

Innovation Solution

A treadmill with a manually driven mechanical structure using a screw rod mechanism for slope adjustment, comprising a lead screw and screw sleeve cooperation with self-locking ability, reducing complexity and costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a motor-driven mechanism is used for slope adjustment, then the slope adjusting function is achieved, but the cost and device complexity increase

Engineering Contradiction:

Improveslope adjusting functionVSAvoidmechanical and circuit structures

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent replaces the motor-driven mechanical system with a pure mechanical screw rod mechanism. The screw rod and screw sleeve cooperate to convert rotational motion into linear motion for slope adjustment, eliminating motors, circuits, and associated control systems while achieving the same slope adjustment function.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts and removes the motor and circuit components from the slope adjustment system, retaining only the essential mechanical elements (screw rod, screw sleeve, supporting arm) needed to achieve slope adjustment. This simplification reduces both device complexity and cost.

Inventive Principle:

Principle #2Taking out (Extraction)

2Adaptability or versatility

If a motor-driven mechanism is used for slope adjustment, then the slope adjusting function is achieved, but the maintenance and repair costs increase

Engineering Contradiction:

Improveslope adjusting functionVSAvoidmaintenance and repair costs

Core Design Contradiction:

Adaptability or versatilityVSEase of repair

Solution Approach 1:

By replacing the motor-driven system with a mechanical screw rod mechanism, the patent eliminates electrical components that require specialized maintenance and repair. The mechanical system uses simple, durable parts (screw rod, screw sleeve) that are easier to maintain and repair, reducing long-term costs.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If a motor-driven mechanism is used for slope adjustment, then the slope adjusting function is achieved, but the manufacturing cost increases

Engineering Contradiction:

Improveslope adjusting functionVSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent replaces expensive motor-driven systems with a simpler mechanical screw rod mechanism. The screw rod, screw sleeve, and supporting arm are standard mechanical components that are cheaper to manufacture and assemble, significantly reducing the overall manufacturing cost while maintaining the slope adjustment function.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 screw rod mechanism simplifies the structure, lowers manufacturing and maintenance costs, and enhances safety by providing a cost-effective and reliable slope adjustment.

Implementation Method 1

The driving mechanism includes a lead screw, the lead screw being in sleeving connection with a screw sleeve in a matching manner

Methodology Applied

Scientific EffectScrew mechanism: Screw

Implementation Method 2

the lead screw and the screw sleeve in the present application has a self-locking ability

Methodology Applied

Scientific EffectFriction: Friction

Implementation Method 3

one end of the side arm being pivoted to the running frame

Methodology Applied

Scientific EffectPivoting: Hinge

Implementation Method 4

the supporting arm is driven to drive the lifting frame to adjust the slope of the treadmill

Methodology Applied

Scientific EffectRotation:

Data Source

PatentEP4520405B1Treadmill capable of adjusting slope rising and falling by screw rod

Publication Date: 2025.07.16 SHENZHEN YILE DYNAMIC TECH CO LTD

Figure 1
Figure 2
Figure 3

AI summary

Provided is a treadmill capable of adjusting slope rising and falling by a screw rod, including: a running platform; a running frame, configured to bear the running platform; a lifting frame, arranged below the running frame, configured to adjust the slope of the treadmill and including a side arm, one end of the side arm being pivoted to the running frame; and a driving mechanism, including a lead screw, the lead screw being in sleeving connection with a screw sleeve in a matching manner, and an outer side of the screw sleeve being rotatably connected to a supporting arm. The driving mechanism is arranged between the running frame and the lifting frame; the screw sleeve is driven by rotating the lead screw, so that the screw sleeve reciprocates on the lead screw; and the lifting frame is driven by the supporting arm to adjust the slope of the treadmill.