1966results about "Diaphragm mounting/tensioning" patented technology

A micro speaker having a capacitive sensor to sense a motion of a speaker diaphragm, is disclosed. More particularly, embodiments of the micro speaker include a conductive surface of a diaphragm facing conductive surfaces of several capacitive plate sections across a gap. The diaphragm may be configured to emit sound forward away from a magnet of the micro speaker, and the capacitive plate sections may be supported on the magnet behind the diaphragm. In an embodiment, the gap provides an available travel for the diaphragm, which may be only a few millimeters. A sensing circuit may sense capacitances of the conductive surfaces to limit displacement of the diaphragm to within the available travel.

A portable electronic device includes a free floating display lens having a stiffener ring mounted on a peripheral region or edge of the free floating display lens to affect modal density and modal distribution of the free floating display lens. Additionally, a piezoelectric supporting structure is attached to the stiffener ring, while surrounding a display, wherein the piezoelectric supporting structure is electrically driven to produce an acoustic signal in one mode and a vibratory haptic signal in another mode.

A vibration actuator includes an electromechanical transducer having a magnetic circuit (1-4) and a driving coil (5), a support frame (9), and a damper (270) elastically supporting the magnetic circuit onto the support frame to flexibly damp the vibration of the magnetic circuit when a driving AC current is supplied to the coil (5). The damper (270) comprises inner and outer ring portions (271, 272) and a plurality of spiral spring portions (273) determined by a plurality of spiral slits (274, 275) formed in the damper. In order to reduce the spiral spring portion determined by the adjacent two spiral slits in its compliance, each of the spiral spring portions has an effective spring length determined by an effective angle (theta) which is determined as an angle (by angular degree) from an inner end of the inner spiral slit to an outer end of the outer spiral slit defining each respective spiral spring portion around a center of the damper. The effective angle is 55 angular degree or more. In a preferable example, the effective spring length is determined by a product (r.theta) of an average radius (r) value by the unit of "mm" and the effective angle (theta) value by unit of the angular degree. The effective spring length is selected to 320 or more, and preferably 400 or more.

A speaker capable of suppressing deterioration of acoustic efficiency while allowing miniaturization of the speaker includes a first unit (20) and a second unit (21) each of which outputs sound. The first unit (20) includes: a diaphragm (25) which vibrates back and forth to radiate sound; and plural suspensions (26a, 26b, 26c, 26d) which support, at different positions, an outer periphery of the diaphragm (25). At least one of air passages (35a, 35b) for channeling sound from the second unit (21) to the outside is provided between the plural suspensions (26a, 26b, 26c, 26d).

A speaker system of the present invention comprises a cabinet, at least one speaker unit attached to the cabinet, and a plurality of passive radiators attached to the cabinet and each including a diaphragm and a supporting system supporting the diaphragm. The speaker system of the present invention is configured so that distortion components of sound pressures radiated from the supporting systems of the plurality of passive radiators are canceled with each other, and sounds radiated by the plurality of passive radiators are radiated in substantially the same direction from the cabinet.

The present invention provides an intertial-type voice actuator that includes a magnetic flux conductive material core with a continuous channel. The channel has antifringing groove. The actuator employs a radially polarized cylindrical magnet spaced in the channel to form a magnetic gap and a conductive coil positioned at least partially in the gap. A multi-component suspension system provides high quality sound using an antifriction bearing, a viscous magnetic fluid, and a spider suspension. The inertial-type actuator is completed by an integrated mounting apparatus. In one embodiment, a receiver and an output disk are interlocked by helical wedges and the actuator is mounted on a soundboard. In another embodiment, a special receiving cavity is attached to a wall stud for intrawall installation. The cavity is equipped with longitudinal electrical contacts so that the actuator can move and still be connected. After the actuator is inserted, the wall covering is installed.

A vibration electrode plate 112 is formed on the upper face of a silicon substrate 32 with an insulating coat film 35 interposed in between. An opposing electrode plate 113 is placed on the vibration electrode plate 112 with an insulating coat film interposed in between, and acoustic holes 40 are opened through the opposing electrode plate 113. Etching holes 36 and 104, each having a semi-elliptical shape, are opened through the vibration electrode plate 112 and the opposing electrode plate 113 so as to face each other longitudinally. A concave section 37 having a truncated pyramid shape is formed in the upper face of the silicon substrate 32, by carrying out an etching process through the etching holes 36 and 104. The vibration electrode plate 112 is held in the silicon substrate 32 by a holding portion 112 placed between the etching holes 36.

A loudspeaker has a chassis, a cone, an actuator and a sub-frame. The actuator is coupled between the chassis and the diaphragm. The sub-frame is flexibly coupled to the chassis and the diaphragm. The diaphragm is flexibly suspended from the chassis. The actuator directly drives both the diaphragm and the sub-frame through coils attached to the cone and to the sub-frame.

A diaphragm provided by the present invention comprises a vibration part and a spherical top part fixed on the vibration part, and the vibration part is made of a rubber compound and comprises a folding ring part, a first fixing part extending from the inner side of the folding ring part and a second fixing part extending from the outer side of the folding ring part. The spherical top part is fixed at the first fixing part, and the folding ring part comprises a plurality of arc-shaped folding ring units which recess along the vibration direction of the diaphragm, wherein the recessing directions of the two adjacent folding ring units are reverse. The present invention also provides a sounding device which comprises a basin stand and the above diaphragm provided by the present invention and fixedly supporting the basin stand. Compared with the prior art, the diaphragm of the present invention is good in consistency, small in distortion and high in stability, and the sounding device applying the diaphragm is good in acoustic performance.

A square speaker is disclosed having a novel surround with a novel rounded corner design and with a magnet assembly and former sized, shaped, and arranged to exploit the increased excursions enabled by the novel surround. The arcuate portion of the rounded corner features smoothed trapezoidal circumferential undulations of the radially outer portion and an extension pad forms the arcuate portion of the radially inner portion of the rounded corner. An apex groove separates the inner portion from the outer portion. Tapered protrusions of the outer portion flank the smoothed trapezoidal circumferential undulations. The rounded corner is bounded by edges making angles of between 20 degrees and 40 degrees (preferably about 35 degrees) with straight sides of the square surround. Most of the outer perimeter of the entire inner flange adjoins the inner portions of the rounded corners. Significant increases in volume displacement per speaker size are achieved.

Disclosed is a high power micro-speaker having a damper plate. More particularly, disclosed is a high power micro-speaker in which a damper plate has an opening through which a voice coil can pass, and the voice coil having passed through the opening is attached to a lower surface of a vibrating plate that is located above the damper plate, which provides an increased vibrating region. As such, enhanced output power of the micro-speaker is accomplished by increasing a height of the voice coil, or a slimmer design of the micro-speaker is accomplished by reducing a height of a frame.

With a waterproof structure for the space between a first case and a diaphragm doubling as a display panel provided facing the first case, a first resilient member is integrally formed at a surface of the diaphragm facing the first case, and the first resilient member is press-fitted into a groove formed in a surface of the first case facing the diaphragm side.

An edge-driven diaphragm loudspeaker driver is configured such that the suspension system of the driver is connected to the voice coil rather than to the diaphragm. Thus, the diaphragm in the loudspeaker is free of suspension systems connected to or extending from the diaphragm. By attaching the surround suspension to the voice coil rather than to the diaphragm, the diaphragm is isolated from the influence of spurious high frequency vibrations in the suspension system, thereby increasing the performance of the loudspeaker at high frequencies. The loudspeaker driver configuration also provides for a longer excursion range for the voice coil/diaphragm assembly, which allows for the driver components to be more accurately aligned during manufacturing, thereby enabling the loudspeaker driver to operate as a full range unit by producing low output frequencies.

The invention discloses a loudspeaker diaphragm and a loudspeaker. The diaphragm comprises a thermoplastic polyester elastomer film layer, wherein the thermoplastic polyester elastomer is a copolymerformed by a polyester hard segment A and a polyether or aliphatic polyester soft segment B, the Young modulus of the thermoplastic polyester elastomer film layer is 1-1000MPa, and after 10% of strain,the elastic recovery rate is larger than or equal to 80%. The loudspeaker diaphragm has excellent rigidity, good damping performance, resilience and the like.

A speaker has diaphragm (16) and suspension holder (19) disposed on the back surface of the diaphragm. In the diaphragm, the part from a bent section (21) disposed between the outer periphery and the inner periphery to the outer periphery is formed in a conical shape. The diaphragm is coupled to the suspension holder through the bent section of the diaphragm. This configuration can omit a damper causing the nonlinearity and asymmetry of suspension, reduce the harmonic distortion of the speaker, improve the power linearity, and improve the performance of the speaker. Even a flat shape can secure sufficient rigidity, so that securing the rigidity of the diaphragm does not require large thickness of the diaphragm and downsizing and low profile can be realized.

A membrane (2) for a microphone (1) is disclosed which comprises a first portion (A1), a second portion (A2), and elements (E1 . . . E4, E1′ . . . E4′), which connect said first (A1) and said second portion (A2). The second portion (A2) is arranged for a movement in relation to said first portion (A1) around an idle position, which movement includes at least a translatory component in a direction of movement (dm) normal to said membrane (2). The elements (E1 . . . E4, E1′ . . . E4′) are provided for definition of a spring constant for said movement around said idle position and are arranged substantially along the outer border of said second portion (A2).