In 2018 I worked on a project to make wooden toys for children from 6 years old and up. The requirement for the toy is that it must contain a mechanical transmission. I chose to make a wooden helicopter with spinning propellers as well as wheels.
Prototype of the wooden helicopter
The helicopter is almost completely made of wood. Only the mechanism inside of the housing is made of plastic (bevel gears). There are multiple moving components on the helicopter what makes the toy really interesting and joyfull for children. The little propellor and the wheels in the back spin around. The big propellor on top of the cabin will spin around together with the large wheels of the helicopter.
Working model moving propellor cardboard
Working model moving propellor cardboard
First of all, I researched the behavior of children, the dimensions for children and how to make a mechanical transmission. Thereafter, I started sketching divergently to generate as many ideas as possible. Based on this I chose to further develop the idea of the helicopter. I started sketching for the design, operation of the mechanism and the dimensions of the helicopter suitable for a child. Before working at the final product, cardboard models were produced to show the working principle.
Working in the workingplace to show the movement
Proof of the movement of the wheels and the big propellor
I started to create the model in Solidworks (3D-CAD program) to define the measerments and to make it easier to create the prototype. Thereafter, the final prototype was made with the dimensional drawings of the 3D-CAD file.
The product is great fun for kids because there are multiple moving parts on the helicopter. The large propeller will move as the helicopter moves across the floor. The child can easily hold the product on the tail of the helicopter, so that it can be easily played with even with the moving parts.