CN201114746Y

CN201114746Y - Speaker

Info

Publication number: CN201114746Y
Application number: CNU2007201220004U
Authority: CN
Inventors: 吴少豪
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-07
Filing date: 2007-08-07
Publication date: 2008-09-10
Anticipated expiration: 2017-08-07

Abstract

The utility model discloses a loudspeaker and aims at providing a double-driving magnetic circuit device loudspeaker which has the advantages of small volume, large power and stable amplitude of the sound source. The utility model adopts the following technical proposal: a loudspeaker comprises a combination body of a magnet guiding support chip and permanent magnet, a voice coil which is maintained in a clearance between a magnet guiding ring and the combination body, a corrugated support chip, a cone paper basin and a dustproof cover. The corrugated support chip, the cone paper cone and the dustproof cover are connected and are fixed on a basin frame. A non-magnet guiding antimagnetic cover is arranged outside a magnet guiding ring. The combination body of the magnet guiding support chip and the permanent magnet is composed of a permanent magnet layer that is clamped by two magnet guiding support chips in a way of overlapping combining, and the non-magnet guiding antimagnetic cover which is equipped with the magnet guiding ring is installed in the combination body to compose a composite magnetic circuit structure that is connected with the basin frame. The voice coil is a double-clearance double-layer contrawound voice coil and is fixed on the cone paper basin. The loudspeaker of the utility model adopts the double-clearance wire packaged magnetic circuit structure, thus achieving the requirements of high performance, large power and distortionless. Compared with the existing product with the same aperture, the weight of the loudspeaker product is reduced by three fifth, and the efficiency is improved by 3-10 times.

Description

Loud speaker

Technical field

The utility model relates to a kind of loud speaker, especially a kind of loud speaker of power type.

Background technology

The electrodynamic loudspeaker of extensive use in the market mainly is made up of magnetic conduction iron, permanent magnet, basin frame, a sheet, voice coil loudspeaker voice coil, cone, dust cover etc., the magnetic structure of this biography loud speaker only adopts a voice coil loudspeaker voice coil single line pack arrangement, make direction of current direction, the result produces very big inductance, and the quality of loudspeaker sound is reduced.In the structure according to such loud speaker of theoretical calculation, approximately have only 30%～40% energy can pass slit between magnet and the sound coil, its service efficiency exists tremendous loss and waste.The progress with levels of culture of improving constantly along with living standards of the people, and the update of high-tech electronic product is very fast, high-endization of the product structure development trend of electroacoustic industry is obvious, therefore demands realizing the development and application of loud speaker high efficiency, premium quality product urgently.

Summary of the invention

The technical problems to be solved in the utility model provides that a kind of small, power is big, the two stably magnetic circuit device loud speakers that drive of sound source amplitude.

For solving the problems of the technologies described above, the utility model by the following technical solutions: a kind of loud speaker comprises: magnetic conduction props up the assembly of sheet and permanent magnet and remains on voice coil loudspeaker voice coil in magnetic guiding loop and the described assembly gap; Link together and be fixed on that ripple props up sheet, taper cone and dust cap on the basin frame, described magnetic guiding loop is provided with non-magnetic conduction Antimagnetic hood outward, described magnetic conduction props up sheet and permanent magnet assembly and props up sheet by 2 magnetic conductions and clamp stacked combining of permanent magnet, and the non-magnetic conduction Antimagnetic hood that magnetic guiding loop is housed of packing into is formed the composite magnetic circuit structure, described composite magnetic circuit structure is connected with the basin frame, and described voice coil loudspeaker voice coil is double gap double-deck back-roll voice coil loudspeaker voice coil and is fixed on the taper cone.

Magnetic conduction described in the utility model props up and has also stacked at least one permanent magnet on the sheet.

Permanent magnet described in the utility model is the higher ferrite permanent-magnet iron of Nd-Fe-B permanent magnet or grade.

Non-magnetic conduction Antimagnetic hood described in the utility model is aluminum material or high temperature resistant plastic material.

Voice coil loudspeaker voice coil described in the utility model is the double gap coil, and two layer line circle inductance values are identical, and the number of turns is identical, and around on the contrary, the gap is equidistant.

Voice coil loudspeaker voice coil described in the utility model or taper cone connect terminal block by lead.

Non-magnetic conduction Antimagnetic hood described in the utility model is fixed on the basin frame by set screw.

The utility model compared with prior art adopts double gap line bag magnetic structure, makes loud speaker reach high-performance, high-power, undistorted requirement, reduced the use amount of steel simultaneously, make the product of same bore, weight reduces 3/5ths, and efficient improves 3-10 doubly.

Description of drawings

Fig. 1 is a section of structure of the present utility model.

Fig. 2 is that part of the present utility model is disassembled schematic diagram.

Fig. 3 is a three-dimensional generalized section of the present utility model.

Embodiment

Below in conjunction with drawings and Examples the utility model is described in further detail.As depicted in figs. 1 and 2, the magnetic guiding loop 2 of packing in the non-magnetic conduction Antimagnetic hood 1 of the utility model loud speaker, and 2 magnetic conductions prop up sheet 3 clamp the 4 stacked combinations of a permanent magnet after, the described assembly non-magnetic conduction Antimagnetic hood 1 that magnetic guiding loop 2 is housed of packing into is formed the composite magnetic circuit structure, above-mentioned composite magnetic circuit structure is connected with basin frame 5, voice coil loudspeaker voice coil 7 props up in the double gap that sheet 6 and taper cone 8 insert composite magnet structures by ripple and is fixed on the taper cone 8, ripple props up sheet 6 and is bonded on the basin frame 5, cover dust cap 9 then, voice coil loudspeaker voice coil 7 or taper cone 8 connect terminal block 11 by lead 12, and non-magnetic conduction Antimagnetic hood 1 is fixed on the basin frame 5 by set screw 10.For reducing by three harmonic distortion that magnetic circuit of loudspeaker produces and strengthening magnetic flux in the magnetic gap, described magnetic conduction props up and has also stacked at least one permanent magnet 4 on the sheet 3, this permanent magnet 4 can prop up the permanent magnet 4 that sheet 3 is clamped less than magnetic conduction, and can just require according to the performance of loud speaker to be increased or cancel, form different magnetic circuit characteristics.

The utility model has changed past single line pack arrangement and has adopted double gap line pack arrangement on magnetic structure, this two loud speaker that drives is provided with two voice coil line bags, electric current is rolled on two opposite directions, inductance is very little, can output have best impedance curve simultaneously, make sound performance produce splendid individual features, impel loud speaker to produce and have sound level and undistorted tonequality preferably; Changed coarse input and output power in the past.And the loud speaker of traditional single gap magnetic circuit, when positive extreme direction and the motion of negative pole direction, can produce vibration difference, can not reach certain action effect, the utility model has overcome above-mentioned shortcoming, by using the magnetic Circuit Design of double gap VE structure, the power characteristic of the desirable input and output with cathode and anode directions balance can be provided, to reach the effect of faithful to former music signal and action, these bass frequencies for the weighing apparatus of balance on a large scale journey are reproduced particularly important, can effectively change and eliminate the generation of rumble and noise.

As shown in Figure 3, the utility model makes loud speaker reach high-performance, high-power, undistorted requirement by the change to traditional magnetic circuit structure for loudspeaker, realized the developing direction of no ironware manufacturing loud speaker, high-quality, high-fidelity, powerful loud speaker can be provided, and acoustic energy is steady, effectively rejects nonlinear distortion, and minimizing rolled steel dosage, reduced volume is being used under the same bore situation, and efficient improves 3-10 doubly, weight reduces 3/5ths, and distortion exists hardly.

Claims

1. loud speaker comprises: magnetic conduction props up the assembly of sheet (3) and permanent magnet (4) and remains on voice coil loudspeaker voice coil (7) in magnetic guiding loop (2) and the described assembly gap; The ripple that links together and be fixed on the basin frame (5) props up sheet (6), taper cone (8) and dust cap (9), it is characterized in that: the outer non-magnetic conduction Antimagnetic hood (1) that is provided with of described magnetic guiding loop (2), described magnetic conduction props up sheet (3) and permanent magnet (4) assembly and props up sheet (3) by 2 magnetic conductions and clamp stacked the combining of a permanent magnet (4), and the non-magnetic conduction Antimagnetic hood (1) that magnetic guiding loop (2) is housed of packing into is formed the composite magnetic circuit structure, described composite magnetic circuit structure is connected with basin frame (5), and described voice coil loudspeaker voice coil (7) is double gap double-deck back-roll voice coil loudspeaker voice coil and is fixed on the taper cone (8).

2. loud speaker according to claim 1 is characterized in that: described magnetic conduction props up and has also stacked at least one permanent magnet (4) on the sheet (3).

3. loud speaker according to claim 1 and 2 is characterized in that: described permanent magnet (4) is Nd-Fe-B permanent magnet or the higher ferrite permanent-magnet iron of grade.

4. loud speaker according to claim 3 is characterized in that: described non-magnetic conduction Antimagnetic hood (1) is aluminum material or high temperature resistant plastic material.

5. loud speaker according to claim 4: described voice coil loudspeaker voice coil (7) is the double gap coil, and two layer line circle inductance values are identical, and the number of turns is identical, and around on the contrary, the gap is equidistant.

6. loud speaker according to claim 5 is characterized in that: described voice coil loudspeaker voice coil (7) or taper cone (8) connect terminal block (11) by lead (12).

7. loud speaker according to claim 6 is characterized in that: described non-magnetic conduction Antimagnetic hood (1) is fixed on the basin frame (5) by set screw (10).