Content code
s1534
Slug (identifier)
links-secondary-1-2
Grades
Secondary I
Secondary II
Topic
Science and Technology
Content
Title (level 2)
What is a Link?
Title slug (identifier)
link
Contenu
Content
Corps
  • A link is the basic mechanical function performed by any part that connects different parts of a technical object.
  • A linking component is an intermediate part that is sometimes needed to connect other parts.
Corps

Lnks and linking components can be shown in an object’s construction diagram.

Content
Columns number
2 columns
Format
50% / 50%
First column
Image
Construction diagram of a pair of scissors, showing the blades, handles, and rivet. A legend indicates that the handles are made of plastic and the blades are made from steel.
Title
Construction Diagram of a Pair of Scissors
Second column
Image
Construction diagram of a pen showing the pen body and cap. A legend indicates that the pen body and cap are made of plastic.
Title
Construction Diagram of a Pen
Contenu
Title
How do you describe a link using four characteristics?
Content
Content
Corps

A link can be described using four characteristics.

Columns number
2 columns
Format
50% / 50%
First column
Corps

For example, the metal tubes of a folding chair are connected by rivets. This link is indirect, permanent, rigid, and partial.

Second column
Image
Image of a folding chair with two rivets.
Corps

All links can be described using one characteristic from each of the following pairs.

Direct

Indirect

The parts are linked together without any linking component. The parts are linked together by one or more linking components. 

Examples

Image of a screwdriver with a plastic handle and steel tip.
ozkan, shutterstock.com
Image of a 4-hole button linked to a shirt by a thread.
Gudman, shutterstock.com
The link between the handle and the shaft of a screwdriver is direct, as the shaft is embedded in the plastic of the handle without any linking component. The link between a button and a shirt is indirect because the button is linked to the shirt via the thread, which acts as a  linking component. 

Removable 

Permanent

The linked parts can be separated without damaging the parts or their linking components. The linked parts cannot be separated without damaging the parts or their linking components. 

Examples 

Image d’une bouteille réutilisable en métal sur laquelle est vissé son bouchon.
Cember Tech, shutterstock.com
Image de deux fils électriques autour desquels une gaine de plastique est chauffée à l’aide d’un chalumeau.
Gudman, shutterstock.com
The link between a reusable water bottle and its cap is removable, as the cap can be removed from the bottle without damaging anything.Plastic sheaths are used to protect electrical wires and serve as a linking component. These links are permanent, as it is impossible to separate the wires without damaging the sheath. 

 

Flexible

Rigid

The parts or linking components allow for return motion

Return motion occurs when linked parts return to their original shape or position following deformation or movement.

To achieve this, there may be a return device (e.g., a spring) that ensures that the linked parts return to their initial position. 
 

The parts or linking components do not allow for any deformation or return motion. 

Examples

Image of a piece of rubber to which a computer keyboard key can be attached.
tomeqs, shutterstock.com
Image of the back of an electric guitar, showing the screws that attach the neck to the body.
Krasovski Dmitri, shutterstock.com
The keys on a computer keyboard are linked to a printed circuit board by a rubber linking component that allows for a flexible link. The temporary deformation of the linking component allows the key to return to its initial position.A guitar neck is attached to the back of a guitar body by screws that form a rigid link. The material the screws are made of does not allow for any deformation.

 

Complete

Partial

None of the linked parts can move independently.
 
At least one of the linked parts can move independently of the others. 

Examples

Image of a brick wall, showing the mortar used to link the bricks together.
Sorawit11, shutterstock.com
Image of a skateboard showing the axle to which the ball bearings are attached, linking the axle to the wheels.
JIPEN, shutterstock.com
Mortar is a mixture of sand and water which, once dry, forms a complete link between the bricks of a wall. Mortar does not allow for any movement between the bricks. Ball bearings form a partial link between the wheels and axle of a skateboard. The ball bearings allow the wheels to rotate around the axles.
Title (level 2)
See Also
Title slug (identifier)
see-also
Contenu
Links
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