Abstract

A headphone (50) has vibration sections (10) for converting an electric signal for generating a voice into vibration, bodies (20) for holding the vibration sections (10), an arm (30) for installing the bodies (20) on the head of the user, and joint sections (40) for rotatably supporting the arm (30) and the bodies (20). The joint sections (40) include urging mechanisms for urging, when the bodies (20) are installed on the user's head, the bodies (20) in the direction where the vibration sections (10) are pressed to the head. The vibration sections (10) are pressed against portions near the user's ears not only by elastic force of the arm (30) but also by the urging mechanisms of the joint sections (40).

IPC Classes  ?

• H04R 1/00 - Details of transducers
• H04R 1/10 - EarpiecesAttachments therefor
• H04R 15/00 - Magnetostrictive transducers

Abstract

A vibration pad (8) has a thick substantially circular plate and has holes or openings such as circular holes (81) penetrating between a back side (80b) and a front side (80a) and arranged concentrically and/or equidistantly. At substantially the center of the back side (80b) is joined a vibration rod (6) to transmit vibration from a giant magnetostrictive material (1) to the back side (80b). On the other hand, the front side (80a) is directly pressed against the skin near an ear etc. of the user, and vibration transmitted to the back side (80b) is transmitted by the front side (80a) to the skull etc. of the user via the skin.

IPC Classes  ?

• H04R 1/00 - Details of transducers

Abstract

An electronic device (50) is provided with a magnetostrictive device (30) and a main body (40). The magnetostrictive device (30) includes a supermagnetostrictive element (1) which expands and contracts corresponding to magnetic field, a coil (4) and biasing magnet (2) for generating magnetic field, and a housing (8) for holding the element, coil and the magnet at prescribed positions. The magnetostrictive device (30) is attached to the main body (40) to permit the supermagnetostrictive element (1) to orthogonally intersect with the attaching plane of the main body (40). A prescribed pressure is applied to the supermagnetostrictive element (1) by the main body (40) and the housing (8) by connecting the housing (8) to the main body (40).

IPC Classes  ?

• H04R 15/00 - Magnetostrictive transducers
• B06B 1/08 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with magnetostriction
• H04R 1/00 - Details of transducers
• H04R 1/10 - EarpiecesAttachments therefor

Abstract

An electronic device (50) is provided with a magnetostrictive device (30) and a main body (40). The magnetostrictive device (30) includes a giant magnetostrictive element (1) which expands and contracts in accordance with a magnetic field; a coil (4) and a biasing magnet (2) for generating a magnetic field; and a housing (8) for holding such element, coil and magnet at prescribed positions. The magnetostrictive device (30) is attached to the main body (40) to have the giant magnetostrictive element (1) orthogonally intersect with an attaching plane of the main body (40). Since the housing (8) is connected to the main body (40), a prescribed pressure is applied to the giant magnetostrictive element (1) by the main body (40) and the housing (8).

IPC Classes  ?

• H04R 15/00 - Magnetostrictive transducers
• B06B 1/08 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with magnetostriction
• H04R 1/10 - EarpiecesAttachments therefor