CN2552280Y

CN2552280Y - Double-pushing type magnetic circuit device for loadspeaker

Info

Publication number: CN2552280Y
Application number: CN 02238998
Authority: CN
Inventors: 袁德华
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-15
Filing date: 2002-06-15
Publication date: 2003-05-21
Anticipated expiration: 2012-06-15

Abstract

The utility model relates to a double-push type magnetic circuit device of an electrodynamic loudspeaker used for an electric acoustics. The device is mainly formed by the following steps that a magnetic ring seat (1) is arranged in a locating fastening piece (2); an endoporus built-up magnet core (3) and an internal groove composite magnetic ring (4) are arranged on the central post of the fastening piece (2) in a balance and vertical way, and are connected with a speaker frame (6) through a shield (5); a DD speech coil (7) of a vibration system is inserted into an even double-clearance between the endoporus built-up magnet core (3) and the internal groove composite magnetic ring (4), and is fixed on a conical diaphragm (9). The utility model changes the past uniline tape to be a DD double-clearance magnetic structure on the magnetic structure, to ensure that the loudspeaker reaches the requirements of high capability, high-power and distortionless, thereby leaving out conducting magnet, saving a great amount of rolled steel for country, reducing the weight, shortening the volume, and lowering the cost more than one time. Compared with the same caliber which is used, the weight is reduced by three fifths, and the power is increased by twice to three times.

Description

Loud speaker dual-pushing type magnetic circuit device

One, technical field:

The utility model loud speaker dual-pushing type magnetic circuit device is mainly used in the electronic audio, further improved the sound source usefulness in family, movie theatre, music place, makes that television set is supporting, the computer complete machine cooperates even more ideal.

Two, background technology:

The magnetic circuit device of the original electrodynamic loudspeaker of China, mainly form by magnetic conduction iron, permanent magnet, basin frame, a sheet, voice coil loudspeaker voice coil, carton, dust cover etc., this traditional magnetic circuit structure for loudspeaker only adopts a voice coil loudspeaker voice coil single line pack arrangement, make direction of current direction, the result produces very big inductance, makes loud speaker reduce the quality of sound; From the structure of theoretical calculation conventional loudspeakers, approximately have only 30%～40% energy to pass slit between magnet and the sound coil, its efficient has tremendous loss and waste.At present China market integrates with World Trade Organization, and the update of high-tech electronic product is very fast, and along with the progress with levels of culture of improving constantly of living standards of the people, the structural reform of electroacoustic industry has become inexorable trend to the development in science and technology of radiophonics high-performance.

Three, summary of the invention:

The technical assignment of the utility model technical issues that need to address and proposition is to overcome the defective that prior art exists, provide a kind of small, power big, sound source amplitude loud speaker dual-pushing type magnetic circuit device stably.

The technical scheme of the utility model loud speaker dual-pushing type magnetic circuit device is: it comprises original permanent magnet, the basin frame, prop up sheet, voice coil loudspeaker voice coil, cone, dust covers etc. are contained in respectively in the basin frame, terminal block, lead-out wire is installed on the taper cone basin frame, its new " YDD " magnetic circuit of loudspeaker device is, the centre of endoporus built-up magnet core (3) is a circular hole, be enclosed within on the location securing member (2), be contained in the centre of magnet ring seat (1) simultaneously, in the middle of its interior circle of the structure of inside groove built-up magnet ring (4) inside groove is arranged, what balance was vertical is contained in the magnet ring seat (1), and by protective cover (5) basin frame (6) connection, in " DD " voice coil loudspeaker voice coil (7) the insertion endoporus built-up magnet core (3) and the even double gap between the inside groove magnet ring (4) with vibrational system, and be fixed on the taper cone (9), blank holder (10) is bonded on the basin frame (6).The utility model has changed single line pack arrangement in the past on magnetic structure, develop " DD " double gap line pack arrangement, " DD " dual-pushing type drives loud speaker and adopts two voice coil line bags, electric current is flowed on two opposite directions, inductance is very little, can output have best impedance curve simultaneously, make sound performance produce splendid phase characteristic, impel loud speaker to produce and have sound level and undistorted tonequality preferably; Changed coarse input～power output in the past: the loud speaker of traditional " D " single gap magnetic circuit, when positive extreme direction and the motion of negative pole direction, can produce vibration difference, just can not reach certain action effect, the utility model adopts " DD " two formulas directly to drive loud speaker, function design in double gap VE structure, the power characteristic of the ideal input～output with cathode and anode directions balance can be provided, to reach faithful to former music signal and action effect, this reproduction for the bass frequencies of the weighing apparatus of balance on a large scale journey is particularly important, guarantee that bass is closely sturdy, change and eliminate the generation of rumble and noise.In sum, change, make loud speaker reach high-performance, high-power, undistorted requirement by magnetic structure to traditional loud speaker, can save magnetic conduction iron, for country saves great deal of steel, make loud speaker to no ironware and march, the high-fidelity loudspeaker of high-quality also is provided to society, high-power, acoustic energy is steady, rejects nonlinear distortion, reduces body weight, reduced volume is used same bore, is lost weight 3/5ths; Power improves 2-3 doubly, and distortion exists hardly, and cost reduces more than one times.

Four, description of drawings:

Fig. 1 is the general assembly drawing of the utility model loud speaker dual-pushing type magnetic circuit device.

Fig. 2 is the Assembly part figure of the utility model loud speaker dual-pushing type magnetic circuit device.

Among the figure: 1, magnet ring seat; 2, location securing member; 3, endoporus built-up magnet core; 4, the compound magnet ring of inside groove; 5, protective cover; 6, basin frame; 7, DD voice coil loudspeaker voice coil; 8, a vibration sheet; 9, cone; 10, blank holder; 11, lead-in wire terminal block; 12, dust cover.

Five, embodiment:

According to Fig. 1, Fig. 2 structure chart device, concrete enforcement installation process of the present utility model is described further: securing member (2) is contained on the magnet ring seat (1), then endoporus built-up magnet core (3) is enclosed within on the location securing member (2), inside groove built-up magnet ring (4) balance vertically is contained in the magnet ring seat (1), with location securing member (2), endoporus built-up magnet core (3) links together, protective cover (5) connects with basin frame (6), in the uniform gap between " DD " voice coil loudspeaker voice coil (7) insertion endoporus built-up magnet core (3) and the inside groove magnet ring (4), and will be fixed on the cone (9) of taper, blank holder (10) is bonded on the basin frame (6), again dust cover (12) is bonded on the cone (9).

Claims

1, the utility model loud speaker dual-pushing type magnetic circuit device, mainly by permanent magnet, voice coil loudspeaker voice coil, cone, the basin frame, prop up sheet, formations such as dust cover, with a sheet that links together, cone, blank holder, dust covers etc. are contained in respectively on the basin frame (6), it is characterized in that it comprises that also endoporus built-up magnet core (3) is enclosed within on the location securing member (2), be contained in the centre of magnet ring seat (1) simultaneously, what inside groove built-up magnet ring (4) balance was vertical is contained in the magnet ring seat (1), protective cover (5) is connected with basin frame (6), in the uniform gap between " DD " voice coil loudspeaker voice coil (7) insertion endoporus built-up magnet core (3) and the inside groove magnet ring (4), and will be fixed on the cone (9) of taper, blank holder (10) is bonded on the basin frame (6).

2, according to the described loud speaker dual-pushing type of claim 1 magnetic circuit device, the centre of the described endoporus built-up magnet of its feature core (3) is a circular hole.

3,, an inside groove is arranged in the middle of the circle in the described inside groove magnet ring of its feature (4) according to the described loud speaker dual-pushing type of claim 1 magnetic circuit device.