This disclosure provides a diaphragm structure of a loudspeaker, including a surround and an annular body. The surround is annular and has an inner rim and an outer rim relative to the inner rim. The annular body disposed on the inner rim of the surround is integrally formed by a plurality of rigid reinforcing units arranged in a circle. Each rigid reinforcing unit includes a first side edge, a second side edge, and two third side edges connected to the first side edge and the second side edge. The two third side edges are formed by a plurality of first reference points at different height positions, and heights of the first reference points asymmetrically and gradually decrease from the middle towards the first side edge and the second side edge to form a substantially upward curve. A peak ridge line is defined between first reference points at the highest position of the two third side edges located on the opposite sides, and the peak ridge line is formed by a plurality of second reference points at different height positions, and heights of the second reference points symmetrically and gradually increase from the middle towards the two third side edges to form a substantially downward curve.

An example composition includes a cloth, which has on each side thereof, a first waterproofing agent, a barrier which inhibits or prevents environmental degradation, and an elastomeric barrier including a second waterproofing agent. Another example composition includes a cloth with a phenolic resin coating having, on each side thereof, a first waterproofing agent, a barrier which inhibits or prevents environmental degradation, and an elastomeric barrier including a second waterproofing agent.

A diaphragm and suspension for an electroacoustic transducer are formed by depositing a layer of compliant material on a first surface of a solid substrate and removing material from a second surface of the solid substrate. The removal leaves a block of substrate material suspended within an inner perimeter of an outer support ring of the substrate material by the compliant material, the block providing the diaphragm.

The present application relates to a transducer element (1) which comprises: a movable diaphragm (2, 2a, 2b) which has a border (4), a frame (5) to which the border (4) of the diaphragm (2, 2a, 2b) is attached, and a reinforcement element (10) which connects to one another a first sub-section of the frame (5) and a second sub-section of the frame (5) which lies opposite the first sub-section.

A speaker diaphragm according to the present disclosure includes a cone formed of a first material including first fibers derived from a plant and a first resin for binding the first fibers together, and an edge portion which is positioned at an outer peripheral portion of the cone and formed of a second material including a second resin, in which the cone and the edge portion are integrally formed. In addition, at least one of the content and the composition of the first resin and the second resin is different.

The present disclosure provides a speaker, comprising a basin frame with a receiving space, a vibration system disposed at the basin frame, and a magnetic circuit system configured for driving the vibration system to vibrate and thus generate sound, wherein, the vibration system comprises a sound radiation plate, a flexible circuit board for elastically supporting the sound radiation plate and a voice coil disposed at a lower side of the flexible circuit board, the flexible circuit board comprises coating layers laminated apart and a copper layer sandwiched between two adjacent coating layers, the coating layers are poly ether ether ketone layers and/or a thermoplastic polyurethane elastomer layers. The speaker provided by the present disclosure has a vibration system with a smaller mass, a higher sensitivity and a reduced cost.

A micro-speaker is provided. The micro-speaker includes a vibration unit; and a fixed unit. The vibration unit includes: a diaphragm; a voice coil located below the diaphragm and configured to drive the diaphragm to vibrate and emit sound; and a flexible circuit board connecting the diaphragm with the voice coil. The diaphragm includes a dome in its middle and a voice membrane extending from an edge of the dome. The flexible circuit board is supported at a side of the voice membrane close to the voice coil. The flexible circuit board comprises a first fixed portion facing away from the dome and a second fixed portion formed into one piece with the dome. The first fixed portion is fixed to the fixed unit and fixed at a side of the voice membrane facing away from the dome.

This disclosure provides a diaphragm structure of a loudspeaker, including a surround and an annular body. The surround is annular and has an inner rim and an outer rim relative to the inner rim. The annular body disposed on the inner rim of the surround is integrally formed by a plurality of rigid reinforcing units arranged in a circle. Each rigid reinforcing unit includes a first side edge, a second side edge, and two third side edges connected to the first side edge and the second side edge. The two third side edges are formed by a plurality of first reference points at different height positions, and heights of the first reference points asymmetrically and gradually decrease from the middle towards the first side edge and the second side edge to form a substantially upward curve. A peak ridge line is defined between first reference points at the highest position of the two third side edges located on the opposite sides, and the peak ridge line is formed by a plurality of second reference points at different height positions, and heights of the second reference points symmetrically and gradually increase from the middle towards the two third side edges to form a substantially downward curve.

The present disclosure discloses a diaphragm for radiating sound, including: a dome; a suspension surrounding the dome, including a first connecting portion adjacent to the dome and having a first surface and a second surface, a suspending portion extending from and surrounding the first connecting portion, and a second connecting portion extending from and surrounding the suspending portion. The suspending portion includes a concave part recessed along a direction from the first surface to the second surface, an inner edge connecting to the first connecting portion, and an outer edge connecting to the second connecting portion. The diaphragm further includes a stiffening layer located on the first surface of the first connecting portion, extending from the inner edge toward the dome. The present disclosure further includes a speaker incorporating the diaphragm.

The present disclosure discloses a diaphragm for radiating sound, including: a dome; a suspension surrounding the dome, including a first connecting portion adjacent to the dome and having a first surface and a second surface, a suspending portion extending from and surrounding the first connecting portion, and a second connecting portion extending from and surrounding the suspending portion. The suspending portion includes a convex part along a direction from the second surface to the first surface, an inner edge connecting to the first connecting portion, and an outer edge connecting to the second connecting portion. The diaphragm further includes glue layers located on corners of the first surface of the first connecting portion, extending from the inner edge toward the dome. The present disclosure further includes a speaker incorporating the diaphragm.