CN201118974Y

CN201118974Y - Under-water speaker

Info

Publication number: CN201118974Y
Application number: CNU2007203060777U
Authority: CN
Inventors: 马钧; 张君鸿
Original assignee: Individual
Current assignee: Ma Jun
Priority date: 2007-11-26
Filing date: 2007-11-26
Publication date: 2008-09-17
Anticipated expiration: 2017-11-26

Abstract

The utility model discloses an underwater loudspeaker, which comprises an upper cover, a base seat and a voice diaphragm, wherein, the upper cover is sealed and fixed at the upper part of the base seat, the voice diaphragm is sealed and fixed at the lower part of the base seat, a vibration driver connected with a base thread is positioned in an empty cavity surrounded by the upper cover, the base seat and the voice diaphragm, a vibration elastic sheet of the vibration driver is fixedly connected with a vibration transmitting body, the other end of the vibration transmitting body is contacted with the voice diaphragm, and a current leading wire of the vibration driver is led out through a sealing hole. A coil of the vibration driver vibrates in a magnetic field after being energized and drives the vibration elastic sheet to vibrate, and the vibration is transmitted through the vibration transmitting body for ensuring the voice diaphragm contacted with the vibration transmitting body to vibrate and vocalize. The underwater loudspeaker has the advantages that the structure is simple, the stronger magnetic field is provided in a gap where the coil is positioned, only slight energized current is required to ensure the stronger vibration of the coil, and the installability of the audio frequency apparatus is greatly enhanced; moreover, the maintenance of the vibration driver with such structure is convenient, the cost is inexpensive, the volume is small, and the weight is light, and the underwater loudspeaker can be easily carried and installed.

Description

Pallesthesiometer

Technical field

The utility model relates to the stereo set field, is the pallesthesiometer about a kind of playing back music under water specifically.

Background technology

Acoustics is one of important tool of information technology, and loud speaker is again the significant components of acoustics.The amusement of modern society, physical culture, culture, propaganda and personal lifestyle come high more to the requirement of loud speaker approximately, particularly there are many actions all to carry out under water in the sports items such as ballet, synchronized swimming on the water, have only with loud speaker under water and come playing back music, the action of the various graces of talent show under musical background.Also have concert to play under water or listen under water just in addition and can have better effect, this all requires the pallesthesiometer of the high-quality of frequency band broad.

It is that magnetostriction material in large or electricity cause compression material and make that the vibratory driver of traditional pallesthesiometer adopts, and cost cost height and complex structure, the utility model are to utilize coil electricity vibrate drive sound film vibration sounding in magnetic field,

Summary of the invention

The purpose of this utility model provides a kind of loadspeaker structure that can use under water, solves the high and baroque shortcoming of traditional pallesthesiometer cost cost.

The technical scheme that realizes above-mentioned purpose is:

A kind of pallesthesiometer, comprise loam cake, base, the sound film, loam cake is sealingly fastened in base top, the sound film phonograph seal is fixed in the base bottom, the vibratory driver that is connected with whorl of base is positioned at loam cake, base, in the membrane-enclosed cavity of sound, the fixedly connected biography shake of the vibration shell fragment of vibratory driver body, passing the shake body other end contacts with the sound film, the current feed of vibratory driver is drawn by closed hole, and vibratory driver is to place the gap, magnetic field of magnetic loop device with being fixed on the coil of vibration on the shell fragment, and the magnetic loop device is with magnetic pole, be fixed on the structure that the vibratory driver enclosure forms after soft iron is alternately laminated, the vibration shell fragment is fixed on the magnetic loop device, and passing the shake body can be rod shaped structure or other shape, and the sound film can be interior knuckling shape, the evagination sphere, the fine plate of tubaeform or plate shaped nylon cloth or ripple.

Operation principle of the present utility model is described below: vibrate in magnetic field behind the coil electricity and drive shell fragment and vibrate, this vibration makes and passes the sound film generation vibration sounding that the shake body contacts through the transmission of biography shake body, advantage of the present utility model is: simple in structure, has stronger magnetic field in the gap at coil place, only need very little electrical current just can make coil produce stronger vibration, improved the installability of audio frequency apparatus greatly; And this structural vibrations driver is easy to maintenance, with low cost, and volume is little, in light weight, and installation is easy to carry.

Description of drawings:

Fig. 1 is the structure chart of an embodiment of the utility model;

Among the figure: 1, lead-in wire; 2, coil; 3, loam cake; 4, magnetic pole; 5, vibratory driver shell; 6, vibration shell fragment; 7, base; 8, sound film; 9, pass the shake body; 10, soft iron; 11, closed hole

Fig. 2 is that sound film shape of the present utility model is plate shaped example structure figure;

Fig. 3 is the example structure figure of knuckling shape under sound film shape of the present utility model is;

Embodiment

Below in conjunction with embodiment operation principle of the present utility model is specifically described: as Fig. 1, a kind of novel pallesthesiometer comprises loam cake 3, base 7, sound film 8, loam cake is sealingly fastened in base top, connecting portion guarantees water-tight, the sound film is fixed in the base bottom, the connecting portion of sound film and base also guarantees to seal water-tight, at loam cake, base, the membrane-enclosed closed cavity internal fixation of sound has vibratory driver, driver is connected with base by screw thread, the vibration shell fragment 5 fixedly connected biography shake bodies 9 of vibratory driver, passing the shake body other end contacts with the sound film, the current feed of vibratory driver is drawn by closed hole 11, vibratory driver is to place the gap, magnetic field of magnetic loop device with being fixed on the coil 2 of vibration on the shell fragment 6, the magnetic loop device is with magnetic pole 4, be fixed on the vibratory driver shell 5 inner structures that form after soft iron 10 is alternately laminated, the vibration shell fragment is fixed on the magnetic loop device, knuckling shape in the shape of sound film can be made according to the needs of pallesthesiometer, the evagination sphere, tubaeform or plate shaped.During speaker operation, vibrate in magnetic field behind the coil electricity and drive the vibration shell fragment and vibrate, this vibration is shaken the body transmission through biography makes and passes the sound film generation vibration sounding that the shake body contacts.

Claims

1, a kind of novel pallesthesiometer comprises loam cake (3), base (7), sound film (8), it is characterized in that: loam cake is sealingly fastened in base top, the sound film phonograph seal is fixed in the base bottom, and the vibratory driver that is connected with whorl of base is positioned at loam cake, base, the membrane-enclosed cavity of sound, the fixedly connected biography shake of the vibration shell fragment (5) of vibratory driver body (9), pass the shake body other end and contact with the sound film, the current feed of vibratory driver is drawn by closed hole (11).

2, pallesthesiometer according to claim 1, it is characterized in that: vibratory driver is to place the gap, magnetic field of magnetic loop device with being fixed on coil (2) in vibration shell fragment (6), the magnetic loop device is with magnetic pole (4), be fixed on the inner structure that forms of vibratory driver shell (5) after soft iron (10) is alternately laminated, the vibration shell fragment is fixed on the magnetic loop device.

3, pallesthesiometer according to claim 1 is characterized in that: sound film shape can be interior knuckling shape, evagination sphere, tubaeform or plate shaped.