Module assembly

A module assembly comprising:

• a plurality of modules each having a first state in which a pin is protruding from each of the modules and a second state in which the pin is received in the each of the modules, the modules each comprising a pin receiver into which the pin is to be inserted and a magnet;
• and
• a plate to which the modules are to be coupled,
• wherein a first module and a second module among the modules are to be surface-to-surface coupled to each other,
• the pin of the first module switches from the second state to the first state to be inserted into the pin receiver of the second module in response to magnetic force applied by the magnet of the second module when the second module is coupled to the plate and the first module is surface-to-surface coupled to the second module,
• the pin switches from the first state to the second state when the surface-to-surface coupling between the first module and the second module is cancelled,
• the plate comprises one or more protrusions,
• the first module and the second module each comprise a fit-coupling portion in which the one or more protrusions are to fit, and
• the fit-coupling portion comprises an insertion recess into which the one or more protrusions are to be inserted.

A module assembly comprising:

• a first module and a second module disposed to be spaced apart from each other, each of the first module and the second module including a magnet;
• and
• a third module to be coupled to the first module and the second module while being in surface contact therewith, the third module including a magnet,
• a plate to which the first module, the second module and the third module are to be coupled, the plate comprising one or more protrusions,
• wherein a pin provided in one of the first module and the third module protrudes and fits in a pin receiver provided in the other of the first module and the third module in response to magnetic force applied by the magnet of the other of the first module and the third module when the first module and the second module are coupled to the plate and the third module is surface-to-surface coupled to the first module and the second module,
• a pin provided in one of the second module and the third module protrudes and fits in a pin receiver provided in the other of the second module and the third module in response to magnetic force applied by the magnet of the other of the second module and the third module when first module and the second module are coupled to the plate and the third module is surface-to-surface coupled to the first module and the second module,
• the pins are configured to protrude when the third module fits in between the first module and the second module,
• each of the first module, the second module and the third module comprises a fit-coupling portion in which the one or more protrusion are to fit, and
• the fit-coupling portion comprises an insertion recess into which the one or more protrusions are to be inserted.