1. Technological World
Linking

2. Building a Racecar

3. Linking Parts Together
Linking is the mechanical function performed different components (items) that connect different parts of a technical object together
Basically, linking is how two parts stay together

4. Characteristics of Links
To describe links in various technical objects, each link is described with four basic characteristics:
Direct or Indirect
Rigid or Flexible
Removable or Non-Removable
Complete or Partial

5. Direct or Indirect
Direct : two parts are held together without a linking component (no nail, no screw, no glue)
Indirect: two parts are held together with a linking component (there is a nail, or screw, or glue)
Direct Indirect

6. Rigid or Flexible
Rigid: a link is rigid if the linking component or the surfaces of the linked parts are rigid
Flexible: a link is flexible if the linking component or the surfaces of the linked parts can be deformed. Usually springs or rubber is used.
Rigid Flexible

7. Removable or Non-removable
Removable: a link is removable when the linked parts can be separated without damaging either their surfaces or the linking component.
Non-removable: a link is non-removable when separating the linked parts damages their surfaces or their linking component.
Removable Non-removable

8. Complete or Partial
Complete: a link is complete when it prevents linked parts from moving independently of one another
Partial: a link is partial when at least one part can move independently of the other parts
Complete Partial

9. Example Pen + Pen Cap Direct or Indirect? Rigid or Flexible?
Removable or non-removable?
Complete or Partial?

10. Example Two blades of a pair of scissors Direct or Indirect?
Rigid or Flexible?
Removable or non-removable?
Complete or Partial?

11. Do on your own… 2 Lego Blocks Direct or Indirect? Rigid or Flexible?
Removable or non-removable?
Complete or Partial?

12. Do on your own… Two pieces of fenceboard Direct or Indirect?
Rigid or Flexible?
Removable or non-removable?
Complete or Partial?

13. Table leg + Table top Direct or Indirect? Rigid or Flexible?
Removable or non-removable?
Complete or Partial?

14. Two Steel Beams Direct or Indirect? Rigid or Flexible?
Removable or non-removable?
Complete or Partial?

15. Cupboard + Wall Direct or Indirect? Rigid or Flexible?
Removable or non-removable?
Complete or Partial?

16. Wheel + Axle Direct or Indirect? Rigid or Flexible?
Removable or non-removable?
Complete or Partial?