The present disclosure provides a loudspeaker device. The loudspeaker device may include an earphone core configured to transfer an electrical signal to a vibration signal; an auxiliary function module configured to receive an auxiliary signal and perform an auxiliary function; a first flexible circuit board configured to electrically connect to an audio signal wire and an auxiliary signal wire of an external control circuit, the audio signal wire and the auxiliary signal wire being electrically connected with the earphone core and the auxiliary function module, respectively through the first flexible circuit board; and a core housing configured to accommodate the earphone core, the auxiliary function module, and the first flexible circuit board. The wiring process inside the loudspeaker device provided in the present disclosure may be simplified, thereby further reducing a volume of the loudspeaker device.

A connection structure of a spectacle frame includes a frame, a connection member, and a temple. The frame is provided with a joint portion at each of both sides thereof, and a pivot shaft protrudes from each of upper and lower surfaces of a joint end of the joint portion. The connection member includes a body provided with a through-hole and having first and second abutting portions at front and rear sides of the through-hole. A head end of the connection member is provided with two shaft holes to respectively connect the two pivot shafts. The temple has a bending portion and an elastic piece extending from the bending portion and passing through the through-hole, such that the bending portion abuts against the first abutting portion and the second abutting portion to allow the temple relative to the frame to be folded inward or stretched outward.

This frame comprises: a front piece; a temple piece; a connection part that is elastic and that connects the front piece and the temple piece; and wiring which electrically connects a front piece-side electrical element provided to the front piece and a temple piece-side electrical element provided to the temple piece, and a portion of which is routed through the space between the front piece and the connection part.

A hinge system for eyeglasses, including: a first hinge element, including a first end and a second end, where the first end includes a retention element; and the second end includes a first hole that extends between two opposite faces of the first hinge element; a second hinge element, including an aperture for receiving the first hinge element; and a second hole that extends from a face of the second hinge element to the aperture, where the first and second hinge elements form a hollow cavity; a pin at least partially engaged in the hollow cavity; and a lamellar element, including an aperture, where at least a part of the lamellar element is between the retention element and the second hinge element.

Glasses include a main body, a glasses leg, and a connecting device. The glasses leg is connected to an end portion of the main body through the connecting device in such a way that the glasses leg is rotatable. The connecting device includes: a first connecting member, a second connecting member, and an elastic member, where the first connecting member is arranged on the end portion of the main body, a first end of the second connecting member is hinged with the first connecting member, a second end of the second connecting member is hinged with the glasses leg, and the elastic member is located between the second connecting member and the glasses leg, where a first elastic end of the elastic member abuts against the glasses leg, a second elastic end of the elastic member abuts against the second connecting member.

A flexible temple for eyeglasses has a temple body which has a fork-shaped end adapted to form a slot within which a slider can slide in contrast with the action of an elastic component. The elastic component is accommodated in a preloaded condition in the slider.

The present disclosure relates to a loudspeaker. The loudspeaker may include a loudspeaker mechanism, a fixing mechanism, and a connector. The loudspeaker mechanism may be configured to generate a vibration signal and transmit the vibration signal to the human body. The fixing mechanism may be configured to support and maintain the position of the loudspeaker mechanism. The connector may be configured to connect the loudspeaker mechanism with the fixing mechanism. The loudspeaker mechanism may at least include a first fixed position and a second fixed position. The first fixed position may be a fixed position of the loudspeaker when the loudspeaker is in a non-working state. The second fixed position may be a fixed position of the loudspeaker when the loudspeaker is in a working state. The connector may be configured to switch the loudspeaker mechanism between the first fixed position and the second fixed position.

The present disclosure relates to a loudspeaker. The loudspeaker may include an earphone core, an auxiliary function module, and a flexible circuit board. The earphone core may be configured to convert an electric signal into a vibration signal. The auxiliary function module may be configured to receive an auxiliary signal and execute an auxiliary function. The flexible circuit board may be configured to electrically connect to an audio signal wire and an auxiliary signal wire of an external control circuit, and electrically connect the audio signal wire and the auxiliary signal wire with the earphone core and the auxiliary function module via the flexible circuit board, respectively. The loudspeaker in the present disclosure may simplify the wire routing and improve sound quality.

Technologies provide a heat pipe having a controlled torque resistance. The techniques disclosed herein provide a heat pipe that can function as a coupling device and as a thermal interface between two moving components of a device without the need of a mechanical hinge. In some configurations, a heat pipe comprises a housing having an outer surface and having an inner surface defining a cavity. The heat pipe can also comprise one or more components for transferring heat from a first region to a second region. In addition, the heat pipe is configured to provide a predetermined torque resistance about a first axis that is perpendicular to a longitudinal axis of the heat pipe. Components, such as a heat source and a heat sink, that are attached to the heat pipe can be hingeably coupled with a predetermined torque resistance without requiring a hinge and a separate thermal interface device.

Disclosed is a 3D printed eyewear frame having an integrated hinge. Advantageously, the integrated hinge assembly is a crossed spring hinge. Methods of manufacturing a 3D printed eyewear frame are likewise provided.