Appliance Attachment Rail With Lug-Guided Cabinet Alignment

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Solution Overview

Problem

Conventional attachment systems for household appliances, such as ovens, often result in uneven installation due to non-level or non-parallel support surfaces, leading to time-consuming alignment processes and potential damage to cabinets during the installation and removal of appliances.

Innovation Solution

An attachment rail system featuring a positioning base with elevated lugs and a rail catch mechanism that allows the appliance to be moved forward and upward simultaneously, preventing cabinet marking and facilitating easier installation and removal by engaging with the appliance's rail and lugs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional attachment systems are used to position an appliance in a cabinet, then the appliance can be installed, but the alignment process is time-consuming and may result in cabinet damage

Engineering Contradiction:
Improveease of installationVSAvoidalignment time
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The positioning base is pre-installed in the cabinet with lugs positioned at specific heights and locations. The rail is pre-attached to the appliance with engagement areas configured to match the lugs. This preliminary configuration eliminates the need for time-consuming alignment adjustments during installation, as the appliance simply needs to be engaged with the pre-positioned lugs through the rail mechanism.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The rail acts as an intermediary component between the appliance and the positioning base. It transfers the appliance's weight to the lugs on the positioning base while guiding the appliance into proper alignment. The rail's engagement lip and ramp mechanism mediate the interaction between the appliance and cabinet, preventing direct contact that could cause damage while ensuring precise positioning.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If shims are used to position the appliance, then alignment can be achieved, but the cabinet face may be permanently damaged

Engineering Contradiction:
Improvealignment precisionVSAvoidcabinet damage
Core Design Contradiction:
Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The rail serves as an intermediary that prevents direct contact between the appliance and the cabinet face. The engagement lip engages with the rail catch, and the ramp guides the appliance into position without requiring shims that could scratch or mark the cabinet. This intermediary mechanism achieves precise alignment while protecting the cabinet surface from damage.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention extracts the alignment function from the traditional shim-based system and integrates it into the rail and lug mechanism. Instead of using separate shims to adjust positioning, the lug heights and rail ramp are designed to provide built-in alignment guidance, eliminating the need for shims that could cause cabinet damage.

Inventive Principle:
Principle #2Taking out (Extraction)

3Ease of operation

If the appliance is moved out of the cabinet for removal, then the appliance can be taken down, but the cabinet face may be marked by the appliance or trim ring

Engineering Contradiction:
Improveease of removalVSAvoidcabinet marking
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The rail acts as a protective intermediary during appliance removal. As the appliance is pulled outward, the rail's engagement lip maintains contact with the rail catch, and the ramp guides the movement in a controlled manner. This ensures the appliance and trim ring move away from the cabinet face along a controlled path, preventing scratching or marking of the cabinet surface while facilitating easy removal.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Weight of moving object

If heavy appliances are installed using conventional methods, then the appliance can be mounted, but the installation process becomes more difficult and time-consuming

Engineering Contradiction:
Improveappliance weightVSAvoidinstallation efficiency
Core Design Contradiction:
Weight of moving objectVSProductivity

Solution Approach 1:

The positioning system is segmented into distinct components: the positioning base with lugs, the rail with engagement areas, and the appliance. This segmentation allows the heavy appliance to be engaged with the support structure through a simple rail-lug interface, eliminating the need for complex adjustment mechanisms. The modular design enables faster installation of heavy appliances by reducing the number of steps required.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The positioning base and rail are configured in advance with matching geometries (lug positions, engagement areas, ramps). This preliminary configuration means that even heavy appliances can be installed quickly by simply engaging the rail with the lugs, without requiring time-consuming manual alignment or adjustment during the installation process.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS8602510B2Attachment rail system for household appliance
Publication Date: 2013.12.10 BSH HOME APPLIANCES CORP
  • US8602510B2 patent drawing
  • US8602510B2 patent drawing
  • US8602510B2 patent drawing

AI summary

An attachment system for attaching a household appliance to a cabinet. The system includes a base having a main body for attaching to the cabinet, front and rear lugs that project substantially horizontally from and are elevated relative to a support area of the cabinet, and a rail catch projecting from the positioning base; and a rail adapted to be attached to a side of the appliance. The rail has a lip that engages the rail catch and limits movement of the rail in a vertical direction, a rear engagement area that engages the rear lug in the installed position, and a front engagement area that engages the front lug in an installing position and in the installed position. The front engagement area has a notch in which the front lug rests in the installed position, and a ramp sloping downward from the notch toward the rear engagement area.