Annular device with battery cover

摘要

An annular device includes an annular main body defining a through hole, a battery mounting portion arranged in the through hole, and a battery cover. The battery mounting portion protrudes from an inner surface of the main body in the through hole, includes a first arcuate element with an outwardly curved surface and a second arcuate element with an outwardly curved surface opposite to each other and cooperatively defining a receiving space. The battery cover is operable to clasp the battery mounting portion, includes a first arcuate member and a second arcuate member opposite to each other. At least one first protrusion is formed on an inner surface of the first arcuate member, at least one cutout is defined in an outer surface of the first arcuate element, and the first protrusion can be fit into the cutout. The second arcuate member clasps the second arcuate element.

主权项

1. An annular device comprising:
an annular main body defining a through hole; a battery mounting portion arranged in the through hole and protruding from an inner side surface of the main body in the through hole, and the battery mounting portion comprising a first arcuate element with an outwardly curved surface and a second arcuate element with an outwardly curved surface opposite to each other and cooperatively defining a receiving space; and a battery cover operable to clasp the battery mounting portion, comprising a first arcuate member and a second arcuate member opposite to each other; wherein at least one first protrusion is formed on an inner surface of the first arcuate member and at least one cutout is defined in an outer surface of the first arcuate element, and the at least one first protrusion is fitted into the at least one cutout, the second arcuate member clasps the second arcuate element.