Linear Drive Connecting Device with Hollow Cavity and Reverse Bends

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Solution Overview

Problem

Existing connecting devices for linear drives are large, making them inconvenient to install and prone to damage due to poor stability.

Innovation Solution

A compact connecting device comprising a plastic main body with a hollow cavity, threaded axle hole, and hardware stamping with reverse bends, featuring vertically symmetric locating protrusions and an axle sleeve for improved stability and installation convenience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a large connecting device is used, then the bearing capability is improved, but the installation convenience deteriorates and the structure becomes unstable

Engineering Contradiction:
Improvebearing capabilityVSAvoidinstallation convenience
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The connecting device is divided into a main body part and a hardware stamping part that can be separately manufactured and then assembled together, allowing for optimized design of each component and easier installation

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The threaded axle hole device is nested within the hollow cavity of the main body part, creating a compact structure that maintains strength while reducing overall size and improving installation convenience

Inventive Principle:
Principle #7Nested doll (Nesting)

2Strength

If a large connecting device is used, then the bearing capability is improved, but the structure stability deteriorates

Engineering Contradiction:
Improvebearing capabilityVSAvoidstructure stability
Core Design Contradiction:
StrengthVSStability of the object's composition

Solution Approach 1:

Separating the connecting device into distinct components (main body and hardware stamping) allows for optimized structural design of each part, improving overall stability while maintaining bearing capability

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The hardware stamping is designed with specific local features (reverse bends, connecting holes) that provide enhanced stability at critical connection points while keeping the overall structure compact

Inventive Principle:
Principle #3Local quality

3Ease of operation

If the connecting device size is reduced, then the installation convenience is improved, but the bearing capability deteriorates

Engineering Contradiction:
Improveinstallation convenienceVSAvoidbearing capability
Core Design Contradiction:
Ease of operationVSStrength

Solution Approach 1:

The connecting device combines different materials (plastic main body and metal hardware stamping) to achieve high strength in a compact structure, maintaining bearing capability while reducing size

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The hollow cavity and reverse bends in the hardware stamping create optimized stress distribution through curved geometries, enhancing strength-to-size ratio

Inventive Principle:
Principle #14Spheroidality (Curvature)

4Ease of operation

If the connecting device size is reduced, then the installation convenience is improved, but the operation stability deteriorates

Engineering Contradiction:
Improveinstallation convenienceVSAvoidoperation stability
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

The segmented design with separate main body and hardware stamping components allows for precise fitting and stable operation in a compact package

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The locating protrusions and corresponding recesses are pre-designed to ensure proper alignment and stable operation from the moment of assembly, eliminating the need for complex adjustment procedures

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS9725015B2Connecting device of linear drive
Publication Date: 2017.08.08 DEWERTOKIN TECHNOLOGY GROUP CO LTD
  • US9725015B2 patent drawing
  • US9725015B2 patent drawing
  • US9725015B2 patent drawing

AI summary

Connecting device of linear drive includes a main body part with a rectangular profile, and a hardware stamping. The two opposite sides of the main body part are respectively fixedly connected with the hardware stamping. The middle portion of the main body part has a hollow cavity. A threaded axle hole device with threaded holes inside is accommodated in and fixedly connected with the cavity. The lateral walls of the cavity have locating protrusions. The hardware stamping includes two reverse bends between which the portion is disposed above the main body part. The lower portion of the hardware stamping is tightly adhered to the lateral side of the main body and bolted, while the upper portion of the hardware stamping has a connecting hole. The connecting device is light in structure, small in size and more convenient to install and is improved in bearing capability and operation stability.