Appliance Insert With Self-Locking Pressure Ring
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Solution Overview
Problem
Existing cable feed-through inserts for appliances are prone to loosening due to insecure mounting of the housing socket on the wall area, leading to instability and potential disconnection of cables.
Innovation Solution
A rotatable pressure ring with a self-locking threaded guide is integrated to secure the housing socket, preventing co-rotation and ensuring stable mounting by adjusting in the direction of snap elements, while a dual-function clamping element with opposite rotation directions for cable securing further enhances stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a pressure ring is provided on the housing socket to secure it on the wall area, then the mounting stability is improved, but the device complexity increases due to additional components and assembly steps
Solution Approach 1:
The patent combines the pressure ring and the threaded guide into a single integrated component. The pressure ring is provided with an integrated threaded guide that allows it to be adjusted in the direction of the snap elements through rotary movement, eliminating the need for separate adjustment mechanisms and reducing overall device complexity while maintaining mounting stability
Solution Approach 2:
The pressure ring serves multiple functions: it secures the housing socket to the wall area, provides a threaded guide for adjustment, and enables rotary movement for tightening. This multi-functionality reduces the need for additional components, resolving the contradiction between improved stability and reduced complexity
2Ease of operation
If the pressure ring is made rotatable for securing the housing socket, then the ease of operation is improved, but the reliability deteriorates due to potential co-rotation and loosening
Solution Approach 1:
The patent incorporates a holding section element that prevents co-rotation of the pressure ring in the first direction of rotation. This element engages with corresponding features on the housing socket to counteract any loosening tendency, allowing the pressure ring to rotate for tightening while preventing reverse rotation that would cause loosening
Solution Approach 2:
The patent employs asymmetric thread design where the first threaded guide has a smaller pitch than the second threaded guide. This asymmetric configuration, combined with the holding section element, creates a ratchet-like effect that allows rotation in one direction for tightening while preventing rotation in the opposite direction, thus maintaining reliability during operation
3Reliability
If a first threaded guide with greater self-locking is used for the pressure ring, then the reliability is improved, but the ease of manufacture deteriorates due to more stringent manufacturing requirements
Solution Approach 1:
The patent achieves greater self-locking by changing the thread pitch parameter - the first threaded guide has a smaller pitch than the second threaded guide. This parameter change increases the self-locking capability and prevents loosening while still allowing for standard manufacturing processes to be used, balancing reliability with manufacturability
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 secure and stable cable feed-through by preventing loosening of the assembly device, ensuring the housing socket remains firmly attached to the wall area even during cable securing, thus maintaining a reliable connection.
Implementation Method 1
the pressure ring can be adjusted in the direction of the snap elements by means of a first threaded guide as a result of a rotary movement about the central axis
Implementation Method 2
the first threaded guide for moving the pressure ring comprises a thread which is always self-locking on account of its pitch
Data Source
AI summary
In order to improve an insert for an opening in a wall area of an appliance comprising a housing socket, an assembly device provided on the housing socket, with an assembly section which can be guided through the opening in the wall area and has snap elements which engage behind an edge of the opening as well as with a pressure ring which is arranged on the housing socket at a distance from the snap elements and can be adjusted in the direction of the snap elements by means of an advancing guide as a result of a rotary movement about the central axis, in such a manner that a secure assembly of the housing socket is possible, it is suggested that the pressure ring be rotatable in a first direction of rotation in order to secure the housing socket and that the housing socket be adapted to be fixed against any co-rotation in the first direction of rotation by means of a holding section element.