Patent ID: 11895458
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A headband portion for headphones comprising:
a headband spring having a plate-spring shape, and being bent in a substantially semicircular arc shape so as to be expandable in a longitudinal direction orthogonal to a plate width direction of the headband spring so that a central portion of the headband spring is disposed in a vicinity of a head top portion of a wearer and a pair of both end portions of the headband spring are arranged on both side head portions of the wearer in response to the headphones being placed on the wearer's head;
a pair of holding members having rigidity to restrict elastic deformation of the headband spring in a plate thickness direction of the headband spring, and configured to hold the pair of both end portions by inserting the pair of both end portions into the pair of holding members; and
a pair of stepped screws that passes through both end side portions of the headband spring in the plate thickness direction and is screwed to the pair of holding members, and that holds the headband spring movably in an axial direction of the pair of stepped screws with gaps between flange portions of the pair of stepped screws and the pair of holding members, the gaps being larger than a plate thickness of the headband spring, and the both end side portions of the headband spring being arranged in the plate width direction.