Motor Drive Fan Unit Mounting With Elastic Restricting Member
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Solution Overview
Problem
The existing motor drive devices require complex and tool-dependent processes for attaching and detaching fan units from mounting members, which complicates installation and maintenance.
Innovation Solution
A motor drive device design featuring a mounting member with a lid and restricting members that can move between restriction and non-restriction positions, allowing the fan unit to be fixed and detached without fasteners, simplifying the operation and enhancing sealing integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If fasteners such as bolts are used to fix the fan unit to the mounting member, then the connection strength is improved, but the ease of operation deteriorates due to complex attachment and detachment processes requiring tools
Solution Approach 1:
The patent replaces the traditional bolt-based mechanical fastening system with a restricting member system that uses elastic deformation and geometric interlocking. The restricting member engages with the mounting member through shape complementarity and elastic retention, eliminating the need for bolts and tools while maintaining sufficient connection strength.
Solution Approach 2:
The restricting member is designed as a simple, inexpensive component that can be quickly attached and detached multiple times. Rather than using durable but complex fasteners like bolts, the restricting member accepts being repeatedly installed and removed without degradation, prioritizing operational simplicity and low cost over long-term durability.
2Reliability
If multiple fasteners are used to secure the fan unit, then the reliability of the connection is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple fastening functions into a single restricting member component. Instead of using multiple separate fasteners distributed around the fan unit, one restricting member integrates all necessary engagement features, geometric interlocking elements, and retention mechanisms into a unified structure, thereby reducing overall system complexity while maintaining reliable connection.
Solution Approach 2:
The restricting member is designed as a multi-functional component that simultaneously provides connection, positioning, and retention functions. It engages with the mounting member, maintains proper alignment, and prevents detachment through elastic retention, replacing what would traditionally require multiple specialized fasteners and associated hardware.
3Reliability
If traditional fastening methods are used, then the sealing integrity is maintained, but the ease of manufacture deteriorates due to complex assembly processes
Solution Approach 1:
The restricting member is pre-configured with the correct geometric shape and elastic properties during manufacturing, incorporating built-in sealing surfaces and engagement features. This preliminary preparation ensures that during assembly, the component automatically achieves proper sealing contact with the mounting member without requiring additional sealing operations or complex alignment procedures.
Solution Approach 2:
The restricting member is designed to automatically perform multiple functions during a single assembly motion. As it is attached to the fan unit, it simultaneously engages with the mounting member, creates the sealing interface, and locks into position through elastic deformation, eliminating the need for separate sealing operations or complex multi-step assembly procedures.
Data Source
AI summary
A motor drive device capable of attaching a fan unit to a mounting member more easily. The motor drive device includes the mounting member formed with a mounting hole, the fan unit including a lid positioned facing the mounting member to cover the mounting hole and being fixed to the mounting member, and a restricting member movably attached to the lid, the restricting member being movable between a restriction position for engaging with the mounting member and a non-restriction position for releasing from the mounting member.