Driving force transmission apparatus

A driving force transmission apparatus configured to transmit a driving force of a drive source of a vehicle in a disconnectable manner, the driving force transmission apparatus comprising:

• a pair of rotational members arranged so as to be coaxially rotatable relative to each other;
• a friction clutch arranged between the pair of rotational members and including a plurality of clutch plates;
• and
• an apparatus case having an accommodating chamber that accommodates the friction clutch, and a storage chamber that stores lubricating oil for lubricating the friction clutch,
• wherein
• the apparatus case includes:
• a first case member having the accommodating chamber;
• a second case member combined with the first case member to form the storage chamber;
• and
• a partition wall member that partitions the accommodating chamber and the storage chamber from each other,
• the apparatus case is configured so that the lubricating oil stirred up through rotation of at least one rotational member out of the pair of rotational members is introduced into the storage chamber and the lubricating oil stored in the storage chamber flows back to the accommodating chamber from a discharge port, and
• the partition wall member is retained by being sandwiched between the first case member and the second case member.