Electrical device comprising an earphone
View Patent ↗A device having an earphone is provided to be attached to the tragus of the outer ear of a person, wherein two levers held to one another in a pivotal manner from opposite sides, driven by an elastically preloaded part, press onto the tragus. The levers both have two arms, wherein the pivot axis is at a distance from the ends of the two levers in the longitudinal direction of the lever and lies outside the normal projection towards the surface of the tragus when the device is attached as intended to the tragus, and/or the elastically preloaded part is a pre-curved bending spring which is pre-curved by more than 360°.
1. An earphone device comprising:
an inner lever and an outer lever which are arranged oriented parallel or at an acute angle to each other and are connected to each other pivotably with respect to a pivot axis, wherein
the inner lever, when the device mounted on the tragus, is provided to bear on the tragus from the inside via a region of contact lying remote from the pivot axis, and the outer lever, with the device mounted on the tragus, is provided to bear on the tragus from the outside via a region of contact lying remote from the pivot axis, wherein
the device is securable on an ear by means of the two levers pressing on the tragus from opposite sides, wherein
an elastically prestressed part is in engagement with both levers in such a way that, on account of its elastic prestressing force, it causes a torque between the two levers about the common pivot axis,
wherein, the two levers both have two arms, wherein the pivot axis lies at a distance from the ends of both levers in a respective longitudinal direction of the levers and moreover lies outside the normal projection in side view onto the surface of the tragus when the device is fitted on the tragus.
2. The device as claimed in claim 1 , wherein the rectilinear continuations, normal to the pivot axis, of the intended regions of contact of the levers with the tragus enclose the pivot axis between them.
3. The device as claimed in claim 1 , wherein a distance of at least 1 cm lies between the area centers of the intended regions of contact with the tragus and the pivot axis.
4. The device as claimed in claim 1 , wherein the pivot axis lies in front of the tragus margin in the region of the cavum conchae and is oriented at least approximately parallel to the tragus margin.
5. The device as claimed in claim 1 , wherein the levers are curved about an axis lying parallel to the pivot axis between the two levers.
6. The device as claimed in claim 1 , further comprising an off switch which is configured to switch the device off automatically when the intended regions of contact with the tragus are pivoted toward each other by less than a fixed minimum distance.
7. The device as claimed in claim 1 , wherein one of the levers has charging contacts for a rechargeable battery.
8. The device as claimed in claim 1 , further comprising a housing containing an earphone, wherein housing is releasably connectable to one of the two levers.
9. The device as claimed in claim 1 , wherein the elastically prestressed part is a pre-curved bending spring, which is pre-curved by at least approximately 540°.
10. The device as claimed in claim 1 , wherein the elastically prestressed part is a pre-curved bending spring, which is pre-curved by more than 360°.
11. The device as claimed in claim 1 , wherein the elastically prestressed part is a pre-curved bending spring, which is pre-curved about the common pivot axis.