Lamp socket with lamp retaining clip

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Solution Overview

Problem

Existing lamp sockets for cooking appliances, particularly G9 types, face challenges in manufacturing complexity and space constraints due to the tight underside area where connection contacts are located, limiting design freedom and ventilation for the lamp base.

Innovation Solution

The retaining clip is inserted into the setting stone from the upper side, creating space on the underside for improved ventilation and allowing for a reduced component count by integrating the retaining clip into a fastening ring that surrounds the base receptacle, with spring legs fixed in a non-positive manner to the setting stone, and optionally equipped with a protective conductor connection for electrical safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the retaining clip is inserted into the setting stone from below, then the lamp base can be anchored in the base receptacle, but the underside area becomes tight and limits design freedom and ventilation

Engineering Contradiction:
Improvelamp base anchoringVSAvoidunderside area
Core Design Contradiction:
ReliabilityVSArea of stationary object

Solution Approach 1:

The retaining clip is inverted from the conventional insertion direction (from below) to insertion from the upper side of the setting stone. This inversion resolves the space conflict on the underside by allowing the retaining clip to be accommodated in the upper region, thereby freeing the underside area for connection contacts and ventilation while maintaining the lamp base anchoring function through the spring legs that extend downward into the base receptacle

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

2Area of stationary object

If the retaining clip is inserted from the upper side, then space is created on the underside for ventilation and design freedom, but the retaining clip must be integrated into a fastening ring

Engineering Contradiction:
Improveunderside areaVSAvoidcomponent integration
Core Design Contradiction:
Area of stationary objectVSDevice complexity

Solution Approach 1:

The retaining clip is merged with the fastening ring to form an integrated component. The fastening ring serves dual purposes: it provides structural support for the setting stone and incorporates the retaining clip functionality through spring legs that anchor the lamp base. This merging reduces the total component count and simplifies assembly while creating sufficient underside space for ventilation and connection contacts

Inventive Principle:
Principle #5Merging (Combining)

3Ease of operation

If the spring legs are fixed separately in the setting stone, then the retaining clip can be inserted from the upper side, but additional fastening contours are required

Engineering Contradiction:
Improveinsertion directionVSAvoidfastening contour structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The fastening contours in the setting stone are designed to serve multiple functions: they anchor the spring legs of the retaining clip from the upper side, provide structural support for the fastening ring, and facilitate the insertion and fixation process. This multi-functionality allows the retaining clip to be inserted from the upper side while avoiding the need for separate, dedicated fastening structures

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

This design simplifies manufacturing, reduces components, and enhances lamp base ventilation, increasing the service life by providing better thermal management and electrical safety.

Implementation Method 1

retaining clip (39), by means of which the base of a lamp can be anchored in the base receptacle, with two have a receiving gap for the lamp base between forming spring legs of the retaining clip

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP4092330B1Lamp socket with lamp retaining clip
Publication Date: 2023.05.10 BJB GMBH & CO KG
  • EP4092330B1 patent drawingFigure 1
  • EP4092330B1 patent drawingFigure 2
  • EP4092330B1 patent drawingFigure 3

AI summary

Described and illustrated is a lamp holder, in particular for kitchen appliance lamps, such as a G9 lamp holder, - with a socket block, - with a socket receptacle for the base of a lamp, formed on the top of the socket block, - with connection contacts for external connecting conductors of the power supply on the underside of the socket block, - with a retaining clip by means of which the base of a lamp can be anchored in the socket receptacle, - with two receiving slots for the lamp base between the spring legs of the retaining clip, each having a free spring leg end and a spring leg end attached to a retaining leg and sitting in the socket receptacle, wherein - the retaining leg is arranged on the top of the socket block and - the free ends of the spring legs are seated in the socket receptacle pointing towards the underside of the socket block.