Welding Cam With Dual Threads For Ballistic Protection
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Solution Overview
Problem
Existing fastening devices for ballistic protection elements and add-on parts cannot be mounted independently in terms of time and do not allow for different torques to be applied, making it difficult to adhere to standard attachment requirements.
Innovation Solution
A welding cam with an internal and external thread, utilizing a clamping nut to attach the ballistic protection element with a specific torque and the add-on part with a standardized torque, allowing independent attachment and precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If both a ballistic protection element and an add-on part are fastened to the same welding cam, then these parts can be mounted independently in terms of time, but it is not possible to screw them with different torques
Solution Approach 1:
The welding cam is segmented into two independent threaded interfaces: an external thread for the ballistic protection element and an internal thread for the add-on part. This segmentation allows each component to be fastened with different torques independently, while both can be mounted at different times without interfering with each other.
Solution Approach 2:
The welding cam serves multiple functions: it provides a mounting interface for the ballistic protection element via external thread, an interface for add-on parts via internal thread, and serves as the base for welded connection to the protected object. This multi-functionality enables independent mounting of different components with different torque requirements.
2Reliability
If the ballistic protection element is fastened with lower torque as required, then the protection element is not damaged, but the add-on part cannot be fastened with the standardized higher torque
Solution Approach 1:
The fastening system is segmented into two independent pathways: one for the ballistic protection element with lower torque requirement to prevent damage, and another for the add-on part with standardized higher torque. The internal and external threads provide separate fastening channels that do not conflict with each other's torque requirements.
Solution Approach 2:
The welding cam acts as an intermediary structure that mediates between the two different torque requirements. It provides the external thread interface for low-torque fastening of the protection element and the internal thread interface for high-torque fastening of the add-on part, allowing both requirements to be satisfied simultaneously.
3Device complexity
If a single threaded hole is used in the welding cam, then the structure is simple, but both ballistic protection element and add-on part cannot be fastened independently
Solution Approach 1:
The single threaded hole is segmented into two separate threaded interfaces within the same welding cam body: an external thread and an internal thread. This segmentation allows independent access and fastening of the ballistic protection element and add-on part without requiring separate welding cams, thus maintaining structural simplicity while enabling independent mounting.
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
Enables the secure and independent attachment of ballistic protection elements and add-on parts with different torques, adhering to standard attachment requirements without damaging the protection elements, and provides flexible attachment methods such as fillet or plug welding.
Implementation Method 1
whose base area which faces the object can be connected to the object via a welded connection
Implementation Method 2
The respective ballistic protection element is screwed on by means of a clamping nut that can be screwed onto the external thread of the welding cam with a first predefinable torque
Implementation Method 3
The respective add-on part can be connected to the internal thread of the welding cam through this through hole and fastened with a second, standardized torque
Implementation Method 4
the welding cam can have a circumferential bevel on the bottom side, which can be welded to the object via a fillet weld
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
The invention relates to a device (1) comprising at least one welding cam (2-2") for attaching ballistic protection elements (10) and additional add-on parts (11) to an object (5). In order to be able to attach a ballistic protection element (10) and an add-on part (11) to the same welding cam (2-2") with different torques, a welding cam (2-2") having a threaded bore (3) and an external thread (4) is proposed. In this case, the ballistic protection element (10) is screwed on with a first predefinable torque by means of a clamping nut (7; 7') which can be screwed onto the external thread (4) of the welding cam (2-2"). For this purpose, the clamping nut (7; 7') has a through-bore with an internal thread (8). Through this through-bore, the corresponding add-on part (11) can be connected to the threaded bore (3) of the welding cam (2-2"). Since the add-on part (11) bears against the clamping nut (7; 7') and not against the ballistic protection element (10), the add-on part (11) can be attached to the welding cam (2-2") with a second torque conforming to standards, without damaging the ballistic protection element (10).