Last Updated

31st August, 2002

Concept Design

Concept 1: Archery

Figure 21 The archery design

In figure 21, the concept idea is come from archery. The main body is made of wood to reduce weight. And the rubber band is used. The operation is pulled back by the rubber band and then released to propel the ball out. It can use the tripod in the middle of the archery to adjust the height.

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Concept 2:

Figure 22 Gun System

Spring is to store the energy. Seven holes are produced to provide different speeds. The speeds are calculated from the mathematical analysis. The mechanism is pulled the block into the hole and release to propel the ball. The tripod is to adjust the height of the device vertically. It looks like a pinball system because they use the same design principle. However, the mechanism is like a gun. The product can manufacture with plastics using the injection moulding.

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Concept 3:

Figure 23 Pinball system

Figure 23 shows the pinball system. The spring is also used to store the energy to propel the ball forward. The marks are placed on the handle to store the spring energy.

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Concept 4:

Figure 26 Spring Lever Mechanism

Final one is using spring lever system.

This design was combination of spring and the lever mechanism. The holes in the handle are to adjust the speed that means when the clamp places the lowest hole. The spring will store more energy to propel the ball forward and the speed is fast. The spring is to store the energy. The wheels are made under the machine for easy transportation.

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