Automatic Locking Mechanism for Single-Operator Clamping

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Solution Overview

Problem

Existing clamping devices require multiple operators for handling heavy objects and struggle with automatically opening jaws to accommodate new objects, as the linkage mechanism activates when empty, causing difficulties in capturing objects without manual intervention.

Innovation Solution

An automatic locking mechanism that toggles between locked and unlocked states using up and down movements of the clamping device, allowing jaws to remain open when lifted, and automatically activating/deactivating the linkage between the pulling action and jaw movement, enabling single-operator operation and efficient object handling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Force

If the linkage mechanism is activated to clamp objects, then the clamping force is improved, but the jaws cannot be opened to accommodate new objects without manual intervention

Engineering Contradiction:
Improveclamping forceVSAvoidautomatic jaw opening
Core Design Contradiction:
ForceVSEase of operation

Solution Approach 1:

The locking mechanism is engaged in advance during the clamping operation to maintain jaw position. This preliminary action allows the jaws to remain fixed in the closed position while clamping, and can be selectively disengaged to automatically open the jaws for accommodating new objects without manual intervention

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The locking mechanism acts as an intermediary between the linkage mechanism and the jaws. It decouples the jaw movement from the linkage activation, allowing independent control where the linkage can apply clamping force while the locking mechanism maintains jaw position, and can be disengaged to automatically open jaws

Inventive Principle:
Principle #24Intermediary (Mediator)

2Weight of moving object

If multiple operators are used to handle heavy objects, then the handling capability is improved, but the operational complexity increases

Engineering Contradiction:
Improvehandling capabilityVSAvoidoperator coordination
Core Design Contradiction:
Weight of moving objectVSDevice complexity

Solution Approach 1:

The locking mechanism enables the clamping device to serve itself by automatically maintaining jaw position during lifting and automatically opening jaws for object placement. This self-servicing capability eliminates the need for multiple operators to manually control jaw movement, reducing operational complexity while maintaining heavy object handling capability

Inventive Principle:
Principle #25Self-service

3Force

If the linkage mechanism remains active during lifting, then the clamping force is maintained, but the jaws cannot remain open for efficient object placement

Engineering Contradiction:
Improveclamping force maintenanceVSAvoidobject placement efficiency
Core Design Contradiction:
ForceVSProductivity

Solution Approach 1:

The system is segmented into independent functional components: the linkage mechanism for applying clamping force and the locking mechanism for maintaining jaw position. This segmentation allows the linkage to remain active and maintain clamping force during lifting, while the locking mechanism independently controls jaw opening/closing to enable efficient object placement without requiring linkage deactivation

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS11945696B1Automatic locking mechanism and clamping devices with automatic locking mechanism
Publication Date: 2024.04.02 NGUYEN NHON HOA
  • US11945696B1 patent drawing
  • US11945696B1 patent drawing
  • US11945696B1 patent drawing

AI summary

An automatic locking mechanism can include one or more annular elements having teeth facing each other or facing away from each other. The automatic locking mechanism can include a rod disposed between the annular elements. The rod can have one or more pins configured to interface with the teeth of the annular elements. The pins and the teeth are also configured to rotate the rod when the annular elements move relative to the rod. The rotation of the rod can toggle a hook end of the rod in a hook receptacle, which can change states of the locking mechanism.