Power Module Retaining Mechanism for Secure Rail Mounting

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Solution Overview

Problem

Existing power modules lack an efficient mechanism for secure retention and easy installation/detachment, which complicates cable management and heat dissipation when multiple modules are densely arranged.

Innovation Solution

A power module design incorporating a housing, support bracket, sliding member, and resilient recovery member with a hook and latch mechanism, along with a lever structure, allows for easy locking and unlocking to a support rail, facilitating row arrangement and proper heat dissipation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a power module is designed with a simple structure, then the manufacturing cost is reduced, but the retention security and ease of installation/detachment are compromised

Engineering Contradiction:
Improvemanufacturing costVSAvoidretention security
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The retaining mechanism is divided into separate functional components: a support bracket fixed to the housing, a sliding member with latch that moves independently, and a resilient recovery member. This segmentation allows each component to be optimized for its specific function while keeping the overall structure relatively simple and cost-effective.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The resilient recovery member automatically pushes the sliding member to engage the latch with the support rail without requiring additional actuators or complex control systems. The mechanism self-locks upon installation and self-unlocks when force is applied to the unlocking end, eliminating the need for powered retention systems.

Inventive Principle:
Principle #25Self-service

2Area of stationary object

If multiple power modules are densely arranged, then the space utilization is improved, but the cable management and heat dissipation become complicated

Engineering Contradiction:
Improvespace utilizationVSAvoidcable management
Core Design Contradiction:
Area of stationary objectVSEase of operation

Solution Approach 1:

The support bracket and retaining mechanism are designed as modular components that can be independently positioned and adjusted. This modularity allows power modules to be arranged in standardized rows with consistent spacing, making cable routing predictable and systematic rather than chaotic.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The retaining mechanism uses standardized hooks and latches on both sides of the support rail, creating a uniform attachment interface. This homogeneity allows all power modules in a row to be installed and managed using the same procedures, simplifying cable management and maintenance across the entire array.

Inventive Principle:
Principle #33Homogeneity

3Reliability

If a secure retention mechanism is implemented, then the reliability of module fixation is improved, but the device complexity increases

Engineering Contradiction:
Improvefixation reliabilityVSAvoidretaining mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The locking and unlocking functions are extracted into a dedicated sliding member with latch that operates independently from the main housing. This separation allows the retention mechanism to be added to a simple housing design without significantly increasing overall complexity, as the retaining components are self-contained and modular.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of using a mechanism that requires active engagement (such as screws or clips that must be deliberately fastened), the design uses a resilient recovery member that passively maintains the locked position. The default state is locked/secured, and unlocking requires active force application, inverting the typical lock/unlock paradigm.

Inventive Principle:
Principle #13The other way round (Inversion)

4Ease of operation

If an easy-to-operate unlocking mechanism is provided, then the ease of installation and detachment is improved, but the structural complexity increases

Engineering Contradiction:
Improveinstallation and detachment easeVSAvoidunlocking mechanism complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The sliding member acts as an intermediary between the user's manual force and the latch mechanism. By providing a sliding member with an unlocking end that translates simple pushing motion into latch disengagement, complex multi-step unlocking procedures are avoided while maintaining operational ease.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The sliding member is designed to move dynamically along the support bracket, transitioning between locked and unlocked positions. This dynamic capability allows the mechanism to adapt to different operational states (installed vs. removed) without requiring fundamentally different structural configurations, maintaining simplicity across both states.

Inventive Principle:
Principle #15Dynamics

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 enables convenient installation and detachment of power modules, improving cable management and ensuring effective heat dissipation by providing a secure and easy-to-use retaining mechanism for multiple modules.

Implementation Method 1

a resilient recovery member having a first end connected to the support bracket and a second end connected to the sliding member, the resilient recovery member being configured to push the sliding member

Methodology Applied
Scientific EffectElastic force: Elasticity

Data Source

PatentUS10798842B1Power module
Publication Date: 2020.10.06 DELTA ELECTRONICS INC(CN)
  • US10798842B1 patent drawing
  • US10798842B1 patent drawing
  • US10798842B1 patent drawing

AI summary

A power module includes a housing, a support bracket, a sliding member and a resilient recovery member. The housing has a first surface and a second surface. The support bracket is fixed to the first surface. The support bracket has a hook to retain a first side of a support rail. The sliding member is slidably connected to the support bracket. The sliding member has a latch member to retain a second side of the support rail. The resilient recovery member has a first end connected to the support bracket and a second end connected to the sliding member. The resilient recovery member is to push the sliding member to cause the hook member and the latch member to sandwich the support rail. The sliding member has a first unlocking end for applying a force against the resilient recovery member. The first unlocking end projects beyond the second surface.