Furniture Drive Actuating Arm Assembly with Segmented Blocking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing furniture drives for movable furniture parts, such as flaps, face challenges in mounting flexibility and safety due to spring-loaded mechanisms that can cause uncontrolled kicking-out movements during assembly.
Innovation Solution
The furniture drive incorporates a releasable blocking device with actuating arms and blocking elements that allow for variable positioning between a fully open and a blocking angle position, preventing uncontrolled movements and enhancing mounting flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring-loaded locking device is used to prevent uncontrolled kicking-out movements of the actuating arm, then safety is improved, but mounting flexibility deteriorates because the actuating arm is blocked in both directions of movement
Solution Approach 1:
The blocking function is segmented into two independent blocking elements (first blocking element and second blocking element) that can operate independently. The first blocking element prevents movement in one direction (toward closed position) while the second blocking element prevents movement in the opposite direction (toward open position). This segmentation allows selective blocking based on mounting requirements, improving both safety and flexibility.
Solution Approach 2:
The blocking elements are made movable rather than fixed, allowing them to transition between blocked and unblocked states. The first blocking element can be moved to an unblocked position to allow closing movement, while the second blocking element can be moved to an unblocked position to allow opening movement. This dynamic capability enables flexible mounting operations while maintaining safety through selective blocking.
2Reliability
If the actuating arm is blocked in both directions to prevent dangerous kicking-out movements, then safety is improved, but ease of operation deteriorates because the mounting operation is impeded
Solution Approach 1:
The blocking function is divided into directional components: the first blocking element handles prevention of closing movement (safety function), while the second blocking element handles prevention of opening movement (safety function). During mounting, only the necessary blocking element is activated, allowing smooth operation in the required direction while maintaining safety against unwanted movement in the opposite direction.
Solution Approach 2:
The blocking elements act as intermediary components between the actuating arm and the housing. They mediate the interaction by selectively allowing or preventing movement based on mounting requirements. During mounting operations, the blocking elements can be positioned to facilitate easy connection of the movable furniture part, then activated to provide safety blocking only when needed.
3Reliability
If a blocking device is introduced to prevent uncontrolled movements, then safety is improved, but device complexity increases
Solution Approach 1:
The blocking device is segmented into two simple, independent blocking elements rather than one complex multi-functional mechanism. Each blocking element has a simple pivot mounting and abutment structure that is easy to manufacture and assemble. This segmentation reduces overall complexity while providing comprehensive safety blocking in both directions.
Solution Approach 2:
The blocking elements are designed to be automatically activated by the mounting operation itself. When the actuating arm is inserted into the housing, the blocking elements are pushed into their blocked positions by the arm's movement, requiring no separate activation mechanism. This self-activating feature simplifies the device by eliminating additional control mechanisms while maintaining safety.
Data Source
AI summary
A furniture drive includes a housing to be arranged on a furniture panel, and an actuating arm assembly for moving the movable furniture part, and the actuating arm assembly includes an actuating arm movably-supported relative to the housing to be fixed to the movable furniture part. The actuating arm assembly is movable between a first relative position and a second relative position, and includes actuating arms pivotable relative to one another. A pivotal movement of the actuating arm assembly from the second relative position toward the first relative position can be blocked by a releasable blocking device including a movably supported blocking element movable between a blocking position and an unblocking position. A blocking element of the blocking device is supported on one of the actuating arms and includes an abutment bearing against a counter-abutment of the other of the actuating arms in the blocking position.