A new loudspeaker structure comprises a housing, a coil assembly and a magnetic vibration diaphragm, wherein the coil assembly is fixed on the housing, and the coil assembly is provided with a connection end connected to an external power source; and the magnetic vibration diaphragm is connected to the housing, and a vibration space for vibration of the magnetic vibration diaphragm is formed between the magnetic vibration diaphragm and the coil assembly. According to the loudspeaker structure of the present invention, a vibration diaphragm is provided as a magnetic vibration diaphragm, thereby removing a bulky magnet, reducing the volume of the loudspeaker structure, and realizing the miniaturization of the loudspeaker structure, so that the application of the loudspeaker structure is more flexible.

A new loudspeaker structure comprises a housing, a coil assembly and a magnetic vibration diaphragm, wherein the coil assembly is fixed on the housing, and the coil assembly is provided with a connection end connected to an external power source; and the magnetic vibration diaphragm is connected to the housing, and a vibration space for vibration of the magnetic vibration diaphragm is formed between the magnetic vibration diaphragm and the coil assembly. According to the loudspeaker structure of the present invention, a vibration diaphragm is provided as a magnetic vibration diaphragm, thereby removing a bulky magnet, reducing the volume of the loudspeaker structure, and realizing the miniaturization of the loudspeaker structure, so that the application of the loudspeaker structure is more flexible.

An electronic device may include: a housing; a speaker provided inside the housing; an interposer board provided inside the housing, the interposer board including a first board, a second board spaced apart from the first board, and a side wall surrounding an internal space between the first board and the second board; and a sealing member provided between the speaker and the first board, wherein the first board may include at least one first through hole configured to transmit at least a portion of sound generated by the speaker to the internal space.

Disclosed are a diaphragm for a miniature sound-generating device, wherein the diaphragm is made of a polyacrylate copolymer, a reinforcing agent is mixed in the polyacrylate copolymer, the polyacrylate copolymer is 100 parts by mass, and the reinforcing agent comprises at least one of carbon black, silicon dioxide, calcium carbonate and barium sulphate, and is 1-90 parts by mass. The diaphragm provided in the disclosure possesses excellent sound performance.

Disclosed are a diaphragm for a miniature sound-generating device, wherein the diaphragm is made of a polyacrylate copolymer, a reinforcing agent is mixed in the polyacrylate copolymer, the polyacrylate copolymer is 100 parts by mass, and the reinforcing agent comprises at least one of carbon black, silicon dioxide, calcium carbonate and barium sulphate, and is 1-90 parts by mass. The diaphragm provided in the disclosure possesses excellent sound performance.

One form of an in-vehicle sound emitting device includes a front case and a rear case. The front case is partitioned from the rear case by a partition plate made from a metal plate. Rear space inside the rear case is sealed, and an electronic circuit is disposed in the rear space. A loudspeaker is mounted in front space inside the front case. By using two of the partition plates having the same structure, the front case having the incorporated loudspeaker and the rear case having the incorporated electronic circuit can be disposed separately.

One form of an in-vehicle sound emitting device includes a front case and a rear case. The front case is partitioned from the rear case by a partition plate made from a metal plate. Rear space inside the rear case is sealed, and an electronic circuit is disposed in the rear space. A loudspeaker is mounted in front space inside the front case. By using two of the partition plates having the same structure, the front case having the incorporated loudspeaker and the rear case having the incorporated electronic circuit can be disposed separately.

At least a system or a method is provided for remote delivery or collection of a device such as an audio collection device. For example, a device comprising an aperture collection and retrieval pin is provided. An apparatus is provided having an aperture receiver, an aperture drive gear and a drive motor. The drive motor is configured to drive the aperture drive gear to open or close the aperture receiver of the apparatus for retrieving or releasing the device comprising the aperture collection pin.

At least a system or a method is provided for remote delivery or collection of a device such as an audio collection device. For example, a device comprising an aperture collection and retrieval pin is provided. An apparatus is provided having an aperture receiver, an aperture drive gear and a drive motor. The drive motor is configured to drive the aperture drive gear to open or close the aperture receiver of the apparatus for retrieving or releasing the device comprising the aperture collection pin.

The invention relates to a mobile loudspeaker apparatus for playing back sound. Mobile loudspeaker systems are often disadvantageous in that they have a poor sound quality or require equipment for a good sound quality that is not easy to transport. A loudspeaker apparatus which firstly provides a good sound quality and secondly is also easily transportable is desirable. Previously, these two requirements were often mutually exclusive. By way of a bistable membrane, or a membrane that is stable in more than two states, said membrane being coupleable to the loudspeaker apparatus, it is possible to manage the balancing act between good transportability and a good sound quality of the loudspeaker apparatus. The bistable membrane can be changed from a stable operating state into a stable transport state. By way of a slight pressure at both ends of the bistable membrane, the latter can be rolled up and consequently changed into the transport state. By way of example, in the transport state, the bistable membrane can engage around a cylindrical housing that partly or wholly encloses the loudspeaker apparatus.