Sliding-Rail Fixing Device for Buoyancy-Resistant Server Accommodation

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Solution Overview

Problem

Existing server accommodation devices fail to stably fix servers in liquid environments, causing them to dislocate due to buoyancy, and lack efficient assembly and detachment processes.

Innovation Solution

An accommodation device with a fixing device comprising a main body, sliding block, and fixing rod, allowing for stable fixation and easy detachment of servers by applying force in a single direction, preventing buoyancy-induced dislocation and simplifying assembly and detachment processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If servers are placed in liquid-cooled accommodation environments, then heat dissipation is improved, but servers dislocate due to buoyancy forces

Engineering Contradiction:
Improveheat dissipationVSAvoidserver position stability
Core Design Contradiction:
TemperatureVSStability of the object's composition

Solution Approach 1:

The fixing device uses a fixing rod that extends through positioning holes in the cabinet wall and engagement holes in the server shell, creating a mechanical counter-force to buoyancy. The rod acts as a physical restraint that balances the upward buoyant force on the server, preventing dislocation while allowing the liquid cooling system to function.

Inventive Principle:
Principle #8Anti-weight (Counterweight)

Solution Approach 2:

The fixing rod is pre-installed in the cabinet wall positioning holes before server installation. When the server is inserted, the rod automatically engages with the positioning holes, establishing the constraint mechanism in advance to prevent buoyancy-induced dislocation from the outset.

Inventive Principle:
Principle #10Preliminary action

2Stability of the object's composition

If complex multi-directional locking mechanisms are used to prevent dislocation, then fixation stability is improved, but assembly and detachment complexity increases

Engineering Contradiction:
Improvefixation stabilityVSAvoidassembly mechanism complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The fixing mechanism is segmented into simple, discrete components: fixing rods installed in the cabinet wall and corresponding positioning holes in the server shell. This segmentation allows each component to perform a single function (preventing movement in specific directions) while keeping the overall system simple and easy to assemble or detach.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Instead of using complex active locking mechanisms that require multiple steps to engage and disengage, the design inverts the approach by using passive fixing rods that automatically engage with positioning holes during server insertion. The stability is achieved through the geometry of the rod-hole interaction rather than complex locking actions.

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

3Stability of the object's composition

If multiple fixing points are used to prevent buoyancy dislocation, then server stability is improved, but device complexity and assembly time increase

Engineering Contradiction:
Improveserver stabilityVSAvoidassembly time
Core Design Contradiction:
Stability of the object's compositionVSLoss of time

Solution Approach 1:

The fixing rod design is universal and can be applied at multiple locations along the cabinet wall. Each rod independently provides stabilization, and multiple rods can be installed in series to handle larger servers or stronger buoyancy forces. The same simple rod-hole mechanism is reused at each position, maintaining assembly simplicity while providing cumulative stability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 device ensures stable server fixation in liquid environments, preventing dislocation and improving assembly and detachment efficiency by allowing single-direction operation for locking and unlocking, enhancing manufacturing and automatic production processes.

Implementation Method 1

The sliding block is slidably connected to the sliding rail

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP4132238B1Fixing device and accommodation device using the same
Publication Date: 2026.03.18 DELTA ELECTRONICS INC(CN)
  • EP4132238B1 patent drawingFigure 1
  • EP4132238B1 patent drawingFigure 2
  • EP4132238B1 patent drawingFigure 3

AI summary

A fixing device includes a main body, a sliding block, and a fixing rod. The main body has a sliding rail and a guiding hole, and the sliding rail which is disposed at a front side of the main body vertically extends. The guiding hole adjoins the sliding rail and horizontally extends through the main body. The sliding block is slidably connected to the sliding rail. The fixing rod is movably connected to the sliding block extending through the guiding hole, and the sliding block is configured to move along the sliding rail and enable the guiding hole to drive the fixing rod to horizontally move.