Hinge Assembly.
Sometimes the spring inside will break or weaken allowing movement in the hinge/latch.
When replacing make sure both spring ends from the hinge assembly locate into the latch.
Note:
When carrying out repairs on your clipper it is always worthwhile disconnecting the power supply before fitting your replacement parts. please do not force any spares into place as this may cause damage to the products.
Carrying out repairs may void any warranties from your suppliers please read their warranty or guarantee information before commencing a repair.