CN202652514U

CN202652514U - Moving-coil type loudspeaker

Info

Publication number: CN202652514U
Application number: CN 201220150587
Authority: CN
Inventors: 王刚; 于博洋
Original assignee: TIANJIN HONGBO ELECTRONICS GROUP CO Ltd
Current assignee: TIANJIN HONGBO ELECTRONICS GROUP CO Ltd
Priority date: 2012-04-11
Filing date: 2012-04-11
Publication date: 2013-01-02
Anticipated expiration: 2022-04-11

Abstract

The utility model discloses a moving-coil type loudspeaker, comprising a conical cone frame, a piece of U iron, a diaphragm and a spider. The central part of the bottom surface of the cone frame is inwardly protruded and extended to form an inner convex ring. The U iron is fixed in a cylindrical cavity formed by the inner convex ring. An outer end of the spider is fixedly connected with the diaphragm. The internal diameter of the spider is fixedly connected with the inner convex ring of the cone frame or the outer sidewall of the U iron. The U iron is designed in an embedded manner, and the spider is arranged between the cone frame and the diaphragm. One of the three moving spaces which are a must as to the thickness of loudspeakers in the prior art, namely, the moving space between the bottom of a diaphragm and the top of a spider, the moving space between the bottom of a spider and the top of a piece of U iron and the moving space between the bottom of a voice coil and the inner bottom of a piece of U iron, is eliminated. In this way, the thickness of the loudspeaker is reduced without reducing the size of the moving spaces, guaranteeing the performance index of the loudspeaker and ensuring that the acoustic fidelity is not reduced.

Description

Coil-moving speaker

Technical field

The utility model relates to the loud speaker field, the coil-moving speaker of a kind of effective its thickness of reduction of special design.

Background technology

Loud speaker is a kind of electro-acoustic transducer device very commonly used, Figure 1 shows that the basic structure schematic diagram of the coil-moving speaker of prior art.As shown in Figure 1, existing coil-moving speaker comprises taper basin frame 1, be fixedly installed the U iron 3 of taper basin frame 1 bottom, be arranged on the magnet 2 of U iron center, be arranged on the magnetic conductive board 4 at magnet 2 tops, be arranged on basin frame opening part and the center be fixedly connected with the vibrating diaphragm 5 of cylindrical skeleton, on the cylindrical skeleton at described vibrating diaphragm center, twine the voice coil loudspeaker voice coil 7 that consists of by a wire, an and sheet 6 that is fixedly connected with basin frame and cylindrical skeleton respectively and can spacing described cylindrical skeleton moves both vertically up and down, wherein, form the uniform magnetic gap of a circle between described magnetic conductive board and the U iron, the winding of voice coil loudspeaker voice coil partly is symmetrical in magnetic gap and arranges.

Because the basin frame is fixedly connected with a sheet, vibrating diaphragm, propping up the outer end of sheet and the ring of vibrating diaphragm is separately fixed on the basin frame, during moving-coil speaker work, the wire of voice coil loudspeaker voice coil winding has electric current to pass through, according to left hand rule, the winding in magnetic gap can produce the power that conforms to direction with the current strength of flowing through and promote the vibrating diaphragm motion.Because sheet and vibrating diaphragm are movabilities at the direction of vibration of vibrating diaphragm, but on the direction vertical with direction of vibration very large rigidity are arranged then, guarantee voice coil loudspeaker voice coil winding part can be in magnetic gap proper motion and deflection does not occur.

Television set is one of topmost field of coil-moving speaker application, television display screen upgrades to LED by CRT, LCD at present, television screen is more and more thinner, the thin condition of television screen has been arranged, it is very thin that the profile of television set just can be done, and also is Bao Yuehao more to the thickness requirement of loud speaker.

Although existing coil-moving speaker has adopted the measure that reduces parts thickness to reduce thickness, but the thickness of moving-coil speaker not only depends on the thickness of related components, also be subject between vibrating diaphragm bottom and the sheet top, prop up between sheet bottom and the U iron top restriction of 3 space sums will reserving between voice coil loudspeaker voice coil bottom and the U iron inner bottom part.But the size of single space equals the peak swing of moving-coil speaker vibrating diaphragm, peak swing again with the degree of depth of moving-coil speaker low frequency playback frequency, bear watt level, sensitivity just waits the important performance index of loud speaker to be directly proportional, simultaneously for space is fully used, 3 spaces should be designed to equate, so it is worthless reducing space in order to reduce loud speaker thickness, this just needs a kind of tonequality that can effectively keep to reduce simultaneously the loud speaker of thickness.

The utility model content

Technical purpose of the present utility model is the shortcoming that overcomes prior art, and a kind of slim coil-moving speaker that can effectively reduce thickness is provided.

For realizing above-mentioned technical purpose, the technical scheme that the utility model adopts is:

A kind of coil-moving speaker, comprise taper basin frame, U iron, vibrating diaphragm and a sheet, at described basin frame bottom center place to projecting inward and extended to form internal projecting ring, described U ferropexy is arranged in the cylindrical cavity that described internal projecting ring consists of, described sheet outer end is fixedly connected with vibrating diaphragm, and described sheet internal diameter is fixedly connected with internal projecting ring or the U iron lateral wall of basin frame.

Preferably, the lower surface of the bottom surface lower surface of described U iron and basin frame bottom surface maintains an equal level.

Preferably, between described sheet internal diameter and basin frame or the U iron be fixedly connected as with binding agent bonding.

Preferably, between described sheet outer end and the vibrating diaphragm be fixedly connected as with binding agent bonding.

Preferably, described magnet is that neodymium-iron-boron magnetic material is made.

The utility model adopts U iron embedded design and will prop up sheet and is arranged between basin frame and vibrating diaphragm, between the vibrating diaphragm bottom and a sheet top that must stay in the moving-coil speaker thickness in the prior art, prop up between sheet bottom and the U iron top, 3 spaces between voice coil loudspeaker voice coil bottom and the U iron inner bottom part, change into and only keep 2, can in the situation that does not reduce the space size, reduce loud speaker thickness like this, guarantee that the performance index of loud speaker and tonequality level do not reduce.

Description of drawings

Figure 1 shows that the basic structure schematic diagram of the coil-moving speaker of prior art;

Figure 2 shows that the basic structure schematic diagram of coil-moving speaker of the present utility model.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:

Figure 2 shows that the basic structure schematic diagram of coil-moving speaker of the present utility model.As shown in Figure 2, coil-moving speaker of the present utility model comprises taper basin frame 11, be fixedly installed the U iron 13 of taper basin frame 11 bottoms, be arranged on the magnet 12 that the neodymium-iron-boron magnetic material of U iron center is made, be arranged on the magnetic conductive board 14 at magnet 12 tops, be arranged on the vibrating diaphragm 15 that basin frame opening part and the center are fixedly connected with cylindrical skeleton, a sheet 16 that on the cylindrical skeleton at described vibrating diaphragm center, twines the voice coil loudspeaker voice coil 17 that consists of and can effectively support vibrating diaphragm by a wire, wherein, form the uniform magnetic gap of a circle between described magnetic conductive board and the U iron, the winding of voice coil loudspeaker voice coil partly is symmetrical in magnetic gap and arranges.

Wherein, at described basin frame bottom center place to projecting inward and extended to form internal projecting ring 110, described U ferropexy be connected in the cylindrical cavity that described internal projecting ring 110 consists of and the bottom surface of U iron basic fair with basin frame bottom surface, be embedded design with the lower convex type change in design of U iron, can effectively reduce the integral thickness of loud speaker, simultaneously bulge loop be arranged so that remain with space between a sheet and the basin frame bottom surface.

Wherein, described sheet 16 comprises tapered side wall and waveform ring bottom surface, described tapered side wall outer end is fixedly connected with vibrating diaphragm, be preferably and use binding agent bonding, described ring bottom surface is inner to be fixedly connected with internal projecting ring or the U iron lateral wall of basin frame, and it is bonding to be preferably binding agent, namely propping up the sheet internal diameter is fixedly connected with and does not directly contact with voice coil loudspeaker voice coil with the basin frame, be fixed on the vibrating diaphragm by a sheet outer end, form double bracing to vibrating diaphragm with the ring of vibrating diaphragm, stablize the direction of motion of vibrating diaphragm.Vibrating diaphragm and voice coil loudspeaker voice coil are fixed, and vibrating diaphragm is when the motive force of accepting voice coil loudspeaker voice coil produces motion, and the motion of also stablizing voice coil loudspeaker voice coil makes it not produce transverse vibration, further improves tonequality.

The space that the utility model coil-moving speaker need stay also has 3: between vibrating diaphragm bottom and the U iron top; Between voice coil loudspeaker voice coil bottom and the U iron inner bottom part; Prop up between sheet bottom surface and the basin frame inside.But wherein 2 spaces are divided into inside and outsidely in position between voice coil loudspeaker voice coil bottom and the U iron inner bottom part and bottom the sheet and between the basin frame inside, can be considered as 1 on thickness direction.The space that need to reserve of loud speaker has only had 2 like this, 3 spaces of the prior art are changed into only keep 2, can in the situation that does not reduce the space size, reduce loud speaker thickness, guarantee that the performance index of loud speaker and tonequality level do not reduce.

The above only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.

Claims

1. coil-moving speaker, comprise taper basin frame, U iron, vibrating diaphragm and a sheet, it is characterized in that: at described basin frame bottom center place to projecting inward and extended to form internal projecting ring, described U ferropexy is arranged in the cylindrical cavity that described internal projecting ring consists of, described sheet outer end is fixedly connected with vibrating diaphragm, and described sheet internal diameter is fixedly connected with internal projecting ring or the U iron lateral wall of basin frame.

2. coil-moving speaker as claimed in claim 1 is characterized in that: the lower surface of the bottom surface lower surface of described U iron and basin frame bottom surface maintains an equal level.

3. coil-moving speaker as claimed in claim 1 or 2 is characterized in that: being fixedly connected as with binding agent between described sheet internal diameter and basin frame or the U iron is bonding.

4. coil-moving speaker as claimed in claim 1 or 2 is characterized in that: being fixedly connected as with binding agent between described sheet outer end and the vibrating diaphragm is bonding.

5. coil-moving speaker as claimed in claim 1 or 2, it is characterized in that: described magnet is that neodymium-iron-boron magnetic material is made.