Pivoting Arm Safety Lock Using Axial Blocking Translation

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing kitchen appliances with pivoting arms lack a simple and cost-effective safety device to prevent the arm from pivoting relative to the base body without requiring significant design changes.

Innovation Solution

A kitchen appliance with a translatable blocking element along the bearing axis, actuated by a button on the base body or swivel arm, which can be easily integrated and aesthetically designed, using a linear translation mechanism and a helical spring for prestressing, ensuring effective blocking without complex electronic means.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a safety device with a blocking element is added to prevent the pivoting arm from pivoting relative to the base body, then safety and reliability are improved, but device complexity increases

Engineering Contradiction:
ImprovesafetyVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The blocking element is designed as a separate, movable component that can be independently actuated along the bearing axis. This segmentation allows the safety function to be added without redesigning the entire pivot mechanism, thereby improving safety while minimizing the increase in overall device complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

An actuating button is introduced as an intermediary element that translates user input into the movement of the blocking element. This intermediary mechanism provides a simple, intuitive interface for users to engage or disengage the safety function without requiring direct manipulation of the blocking element itself, thus improving ease of operation while keeping the overall system relatively simple.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If a blocking element is made translatable along the bearing axis with an actuating button, then ease of operation is improved, but device complexity increases

Engineering Contradiction:
Improveease of operationVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The blocking element is designed to move along the bearing axis under the direct action of the actuating button, without requiring complex mechanical linkages or external power sources. This self-service mechanism allows the user to easily engage or disengage the safety function by simply pressing the button, improving ease of operation while minimizing the addition of complex components.

Inventive Principle:
Principle #25Self-service

3Ease of operation

If an actuating button is provided on the base body or swivel arm, then ease of operation is improved, but manufacturing complexity increases

Engineering Contradiction:
Improveease of operationVSAvoidease of manufacture
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The actuating button is designed to serve multiple functions: it acts as the primary interface for engaging/disengaging the safety device, and its position on either the base body or swivel arm allows it to serve as both a functional component and an integrated part of the appliance's outer shape. This multi-functionality improves ease of operation while avoiding the need for separate, additional components that would increase manufacturing complexity.

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 solution provides a user-friendly, cost-effective, and reliable safety device that prevents pivoting of the swivel arm, ensuring safe operation and easy production, while maintaining the appliance's design integrity.

Implementation Method 1

using a linear translation mechanism and a helical spring for prestressing

Methodology Applied
Scientific EffectHelical spring: Spring

Data Source

PatentEP2839767B1Kitchen appliance with a pivoting arm, and a safety device
Publication Date: 2016.10.26 BSH HAUSGERATE GMBH
  • EP2839767B1 patent drawingFigure 1~2
  • EP2839767B1 patent drawingFigure 3~4

AI summary

The invention relates to a kitchen appliance (1) with a base body (2), a pivoting arm (3) which is pivotably linked to the base body (2) via a bearing axis (4), and a safety device which is set up to prevent the pivoting arm from pivoting (3) to prevent relative to the body (2). It is provided that a blocking element (8) as part of the safety device can be translated along the bearing axis (4). A translatable locking element (8) can allow a simple and effective swivel blockage for the swivel arm (3).