Bayonet Closure Assembly With Hidden Blocking Element Lock
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Solution Overview
Problem
Existing assemblies with bayonet closures lack a simple, effective, and aesthetically pleasing securing mechanism that prevents the component body from being loosened or removed, especially by hand, while also being cost-effective and easy to implement.
Innovation Solution
A bayonet groove design with a pocket portion and blocking portion, combined with a blocking element such as a screw or pressure piece, allows for secure engagement and disengagement of the bayonet projection, ensuring the assembly remains connected until intentionally released.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a blocking element is positioned in the blocking portion to prevent removal of the component body, then security against unauthorized loosening is improved, but the device complexity increases
Solution Approach 1:
The blocking element is integrated into the bayonet groove structure, with the blocking portion forming an integral part of the groove geometry. This nesting approach allows the security feature to be incorporated without adding separate external components, thereby improving reliability while minimizing increases in device complexity
Solution Approach 2:
The blocking element is pre-positioned in the blocking portion during assembly, creating a preliminary security measure that prevents unauthorized loosening before the component body can be removed. This preliminary action ensures security is established as part of the normal assembly process rather than requiring additional security steps
2Reliability
If a securing mechanism is added to prevent removal of the component body, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The blocking element is designed to be dynamically positionable between a blocking position (when the bayonet projection is in the introduction portion) and a non-blocking position (when the bayonet projection is in the function portion). This dynamic behavior allows the same structure to provide security during assembly while automatically enabling easy removal during disassembly, thus improving reliability without permanently deteriorating ease of operation
3Reliability
If visible securing mechanisms are used to prevent loosening, then reliability is improved, but aesthetic appearance deteriorates
Solution Approach 1:
The blocking portion is merged with the bayonet groove structure, creating a unified geometric feature that serves both functional (security) and aesthetic purposes. By combining the securing mechanism with the existing bayonet closure geometry rather than adding separate visible components, reliability is improved while aesthetic appearance is preserved
Data Source
AI summary
The present invention relates to an assembly (1) having: a component body (2), and a fastening body (3) for fastening the component body (2), wherein the component body (2) can be connected to the fastening body (3) via a bayonet closure (4) of the assembly (1), wherein the bayonet closure (4) has: a bayonet projection (5), and a bayonet groove (6) in and along which the bayonet projection (5) can be guided, wherein the bayonet groove (6) has: an introduction portion (60) via which the bayonet projection (5) can be introduced into the bayonet groove (6) in an introduction direction (E), a function portion (61) which extends away from the introduction portion (60) laterally in relation to the introduction direction (E) and opens at a distal end of said introduction portion in a locking portion (62) for fixing the bayonet projection (5), in which locking portion the bayonet projection (5) can be fixed in a locking position, a blocking portion (63) which connects the function portion (61) to the introduction portion (60), and a pocket portion (64) extending away from the function portion (61) counter to the introduction direction (E) between the blocking portion (63) and the locking portion (62), in which pocket portion the bayonet projection (5) can be at least partially received in a holding position, wherein the assembly (1) furthermore has a blocking element (7) which can be positioned selectively in a blocking position in the blocking portion (63) in order to block a passage for the bayonet projection (5) in the bayonet groove (6) between the introduction portion (60) and the function portion (61), and wherein the assembly (1) is designed such that the blocking portion (63) is at least partially exposed in the holding position in such a manner in order to position the blocking element (7) in the blocking portion (63).