Target Launcher Arm Blocking Mechanism
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Solution Overview
Problem
Existing target launching devices for sports shooting, particularly those requiring instantaneous target deployment upon vocal command, face challenges with precision positioning of contactors, potential device blocking, and mechanical stress due to the use of electromagnets and triggers, leading to safety concerns and restricted operational ranges.
Innovation Solution
A target launching device with a rotating arm and motor-driven blocking means that block the arm beyond a predefined angular sector, allowing for almost instantaneous target launch without exerting torque at the 'zero point', ensuring higher operational safety and reduced mechanical stress by using motor-activated blocking mechanisms rather than electromagnets and triggers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electromagnets and triggers are used to block the arm, then the arm can be held in position, but mechanical stress increases and device blocking occurs
Solution Approach 1:
The patent replaces the electromagnetic triggering mechanism with a purely mechanical blocking system. The motor-driven blocking means mechanically engage with the rotation shaft to prevent arm movement, eliminating the need for electromagnets and triggers. This substitution removes the associated mechanical stress and blocking issues while maintaining reliable arm positioning through direct mechanical engagement.
2Manufacturing precision
If contactors are positioned precisely to stop the arm at zero point, then launch accuracy improves, but positioning tolerance is restricted
Solution Approach 1:
The patent employs dynamic blocking control where the blocking means are activated at a predetermined angle before the zero point position. This dynamic approach allows the motor to continue rotating the arm past the zero point while the blocking mechanism engages to hold the arm in the correct position. This eliminates the need for extremely precise contactor positioning while maintaining accurate arm placement.
Solution Approach 2:
The blocking means are activated in advance at a predetermined angular position before the arm reaches the zero point. This preliminary activation allows the system to prepare for positioning without requiring the contactor to be positioned with extreme precision at the exact zero point, thereby increasing positioning tolerance while maintaining launch accuracy.
3Speed
If the arm is blocked beyond the zero point position, then instantaneous target launch is achieved, but the arm experiences torque and mechanical stress
Solution Approach 1:
The patent replaces the electromagnetic holding mechanism with a mechanical blocking system that engages at a predetermined angle before the zero point. This mechanical engagement prevents the need for the arm to be held in position against torque by electromagnets, eliminating the associated stress while achieving instantaneous launch through the mechanical blocking action.
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 quasi-instantaneous response to launch orders with improved safety and reduced risk of device blocking, allowing for a wider positioning tolerance of detection components and eliminating mechanical stress on the arm, thus enhancing the reliability and safety of the target launching process.
Implementation Method 1
The device includes a tension spring capable of being tensioned during rotation of the arm towards the 'zero point' position, the return to the relaxed position of the tension spring being configured to rotate the arm for the launch of the target
Implementation Method 2
The free wheel authorizing the rotation of the crank pin in the opposite direction of rotation of the gear motor
Data Source
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AI summary
The invention relates to a target launching device for target shooting, with instantaneous take-off, which comprises first and second blocking means (10, 11, 19, 20, 21) for blocking the rotation of the arm (2) combined with the drive means (9) and engaging with additional blocking means (5) interposed between the launching means (6) and the rotational shaft (3) of the arm (2), the blocking means (5, 10, 11, 19, 20, 21) being configured to block the arm (2) in a launching position beyond the "zero point" in a predefined angular range in the direction of rotation of the arm (2) and to release the arm (2) beyond the launching position, the launching means (6) relaxing in order to effect the rotation for the launch of the target. The invention can be used in the field of target shooting, whether with shotguns or revolvers, or in archery.