Lever-Operated Latch Device Nested Operation Section

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Solution Overview

Problem

Conventional latch devices have a limited length specification due to arrangement space, which affects the convenience of operation, particularly requiring a shorter actuation handle that compromises operational ease.

Innovation Solution

A lever-operated latch device with a case body, actuation body, linking member, and slide body, where the actuation body has protruding arms and an operation section, allowing the actuation body to swing and drive the linking and slide bodies to move, enhancing operational convenience by elongating the actuation handle without altering the structure's length.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the actuation handle length is increased to improve operational convenience, then the ease of operation is improved, but the arrangement space requirement increases

Engineering Contradiction:
Improveconvenience in operation of the actuation handleVSAvoidarrangement space of the latch device
Core Design Contradiction:
Ease of operationVSArea of stationary object

Solution Approach 1:

The operation section is nested within the opening section formed by the protruding arms of the actuation body. The pressing member is received in the opening section and pivotally connected to the actuation body, allowing the operation mechanism to be contained within the existing structural envelope rather than extending outward, thus maintaining compact dimensions while providing adequate operational leverage

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The actuation body utilizes a pivoting motion within the opening section rather than linear extension. The pressing member pivots about an axis perpendicular to the plane of the protruding arms, transforming the operational space from a linear extension into a rotational movement within the existing two-dimensional footprint, effectively adding a dimensional aspect to the operation mechanism

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 design improves operational convenience by allowing a longer actuation handle while maintaining the same structure length, enabling smoother operation and overcoming the limitations of conventional latch devices.

Implementation Method 1

an actuation body (20), a linking member (30) and a slide body (40), wherein the actuation body has a free end and a pivoted end pivotally connected with the case body in cooperation with elastic members (50), whereby the actuation body can swing

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS11946300B2Lever-operated latch device
Publication Date: 2024.04.02 FIRST DOME
  • US11946300B2 patent drawing
  • US11946300B2 patent drawing
  • US11946300B2 patent drawing

AI summary

A lever-operated latch device includes an assembly of a case body, an actuation body mounted on the case body, a linking member and a slide body. The actuation body has a free end and a pivoted end pivotally connected with the case body in cooperation with elastic members. The free end of the actuation body is formed with two protruding arms and an opening section positioned between the protruding arms. An operation section is disposed in the opening section. The linking member has a first end pivotally connected with the free end of the actuation body (or the operation section) and a second end connected with the slide body. When an operator presses the operation section, the actuation body is permitted to move from a closed position to an opened position so as to drive the linking member and the slide body to move.