CN201601817U - Planar voice coil loudspeaker - Google Patents

Abstract

The utility model discloses a plane voice coil loudspeaker voice coil belongs to the speaker field. This plane voice coil loudspeaker mainly includes: the circuit board comprises a circuit board diaphragm, a positioning diaphragm ring, a first positioning sheet, a second positioning sheet, an upper magnetic return device and a lower magnetic return device. This plane voice coil loudspeaker mainly includes: a circuit board diaphragm, a positioning diaphragm ring, a positioning sheet, a magnetic conductive disk and a cover plate. The utility model discloses a constitute plane voice coil loudspeaker such as circuit board diaphragm, location membrane circle, spacer, the circuit board diaphragm can make the vibrational force of production distribute on whole circuit board diaphragm, and unnecessary warp when not only can reducing the vibration, can effectively resist the resistance of air moreover, can solve the not enough scheduling problem of rigidity of circuit board diaphragm itself.

Description

Planar Voice Coil Speaker

technical field

The utility model relates to the field of loudspeakers, in particular to a plane voice coil loudspeaker.

Background technique

The voice coil of the common speaker on the market (which can be called a traditional speaker) adopts a winding method, and the voice coil is placed around the diaphragm, and then the diaphragm is combined with the upper end surface of the diaphragm, and a magnet is set in the diaphragm ; When the traditional speaker is powered on, the voice coil will vibrate rapidly due to magnetic force, and at the same time, the diaphragm will start to vibrate, that is, the speaker will emit sound.

Because the voice coil of a traditional speaker is set around the diaphragm, the larger the speaker, the larger the volume it will occupy; in addition, when the traditional speaker vibrates and makes sound, the force is mainly transmitted to the diaphragm through the voice coil, but The contact between the voice coil and the diaphragm is only limited to the junction, which accounts for a small proportion of the entire diaphragm area, and the diaphragm needs to push the air when it vibrates, which will be resisted by the air, but the air resistance is distributed on the entire diaphragm surface , this kind of pushing method makes the diaphragm easy to deform and cause modal vibration, causing the sound pressure to become stronger and weaker with the increase of the vibration frequency, and the sound details are not good. The structural design of this type of speaker can only be towards We started to increase the rigidity of the diaphragm, but to increase the rigidity of the diaphragm, there are problems that the material properties are not easy to achieve and the vibration mass is difficult to increase. At present, it seems impossible to find a material that is light, thin and rigid.

Utility model content

In order to reduce unnecessary deformation of the diaphragm when it vibrates, the embodiment of the present invention provides a planar voice coil speaker, and the technical solution is as follows:

On the one hand, the embodiment of the utility model provides a planar voice coil speaker, which mainly includes:

A circuit board diaphragm on which a voice coil is arranged;

A positioning diaphragm, on which at least one hanging edge is formed; the positioning diaphragm is glued to the upper end surface of the circuit board diaphragm;

A first positioning piece, which is arranged on the upper edge of the positioning diaphragm;

A second positioning piece, which is arranged at the lower end edge of the positioning diaphragm;

An upper magnet return device, which includes an upper guide disk, and at least one tuning hole is opened on the upper guide disk, a first inner magnet and a first outer magnet are arranged on the inner surface of the upper magnet return device, And glue a first inner guide disc on the first inner magnet, and glue a first outer guide disc on the first outer magnet; the upper magnetic return device is arranged at the upper end of the first positioning piece;

The lower magnet return device includes a lower guide disk, and at least one tuning hole is opened on the lower guide disk, and a second inner magnet and a second outer magnet are arranged on the inner surface of the lower magnet return device. A second inner conductive disk is glued on the second inner magnet, and a second outer conductive disk is glued on the second outer magnet; the lower magnet return device is arranged at the lower end of the second positioning piece.

Further, the voice coil on the circuit board diaphragm is completely covered on its upper or lower surface.

Further, a plurality of holes are respectively opened on the first inner guiding disk and the second inner guiding disk to reduce membrane vibration.

Furthermore, a plurality of notches, dome notches and notches on the voice coil line are added at the center of the circuit board diaphragm to strengthen the rigidity of the circuit board diaphragm.

On the other hand, the embodiment of the present invention provides a planar voice coil speaker, which mainly includes:

A circuit board diaphragm on which a voice coil is arranged;

A positioning diaphragm, on which at least one hanging edge is formed; the positioning diaphragm is glued to the upper end surface of the circuit board diaphragm;

A positioning piece, which is arranged at the lower end edge of the positioning diaphragm;

A guide disk, on which at least one tuning hole is opened, an inner magnet and an outer magnet are arranged on the inner surface of the guide disk, and an inner guide disk is glued on the inner magnet, and an inner magnet is glued on the outer magnet. Outer guide disk; the guide disk is set at the lower end of the positioning piece;

A cover plate, at least one tuning hole is opened on the cover plate; the cover plate is arranged at the upper end of the positioning piece.

Further, the voice coil on the circuit board diaphragm is completely covered on its upper or lower surface.

Furthermore, a plurality of holes are opened on the inner guide disk to reduce membrane vibration.

Furthermore, a plurality of notches, dome notches and notches on the voice coil line are added at the center of the circuit board diaphragm to strengthen the rigidity of the circuit board diaphragm.

The beneficial effects of the utility model embodiment are:

A planar voice coil speaker is composed of a circuit board diaphragm, a positioning diaphragm, and a positioning sheet. The circuit board diaphragm can distribute the generated vibration force on the entire circuit board diaphragm, which can not only reduce unnecessary deformation during vibration, but also It can effectively resist the resistance of the air, and can solve the problems of insufficient rigidity of the circuit board diaphragm itself; moreover, it only needs to form a planar voice coil speaker through the circuit board diaphragm, positioning diaphragm, positioning sheet, etc., with simple structure, easy operation and low production cost .

Description of drawings

Referring to the following detailed description and accompanying drawings of a preferred embodiment of the utility model, the technical contents and purpose effects of the utility model can be further understood; the accompanying drawings of the utility model embodiment are:

Fig. 1 is the three-dimensional exploded view of an embodiment of the planar voice coil loudspeaker provided by the utility model;

Fig. 2 is a three-dimensional combined view of an embodiment of the planar voice coil speaker provided by the utility model;

Fig. 3 is a schematic cross-sectional view of an embodiment of the planar voice coil speaker provided by the utility model;

Fig. 4 is a schematic cross-sectional view of another embodiment of the planar voice coil speaker provided by the present invention;

Fig. 5 is a schematic diagram of layout of another circuit board diaphragm voice coil of the planar voice coil speaker provided by the utility model;

Fig. 6 is the view of another embodiment of the planar voice coil loudspeaker provided by the utility model; And

Fig. 7 is a schematic diagram of another circuit board diaphragm of the planar voice coil speaker provided by the present invention.

In the accompanying drawings, the list of components represented by each symbol is as follows:

1 circuit board diaphragm, 11 voice coils, 13 notches;

2 positioning diaphragm, 21 hanging edge;

3 the first positioning piece;

4 second positioning piece;

5 upper magnet return device, 51 upper guide disk, 511 tuning hole, 52 inner magnet, 53 outer magnet, 54 inner guide disk, 55 outer guide disk;

6 lower magnet return devices, 61 lower guide discs, 611 tuning holes, 62 inner magnets, 63 outer magnets, 64 inner guide discs, 65 outer guide discs;

7 cover plates, 71 tuning holes.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the implementation of the present utility model will be further described in detail below in conjunction with the accompanying drawings.

Referring to Fig. 1 to Fig. 3, they are respectively a three-dimensional exploded view, a three-dimensional combined view and a schematic cross-sectional view of an embodiment of the planar voice coil speaker provided by the present invention. The planar voice coil speaker mainly includes:

A circuit board diaphragm 1, the upper or lower surface of the circuit board diaphragm is provided with a voice coil 11;

A positioning diaphragm 2, which is formed with at least one overhanging edge 21 (as shown in Figure 3); the positioning diaphragm 2 is glued to the upper end surface of the circuit board diaphragm 1;

A first positioning piece 3, the first positioning piece 3 is arranged at the upper edge of the positioning diaphragm 2;

A second positioning sheet 4, the second positioning sheet 4 is arranged at the lower end edge of the positioning diaphragm 2;

One upper magnetic return device 5, this upper magnetic return device 5 comprises an upper guide disc 51, and is provided with at least one tuning hole 511 above it, and an inner and outer magnet 52, 53, and an inner and outer magnetic disk 54,55 is glued on the inner and outer magnets 52,53 respectively; this upper magnetic return device 5 is arranged at the upper end of the first positioning piece 3;

A lower magnetic return device 6, the lower magnetic return device 6 includes a lower guide disk 61, and is provided with at least one tuning hole 611 on it, and an inner and outer magnet 62, 63 is arranged on the inner surface of the lower magnetic return device 6, And on the inner and outer magnets 62,63, glue an inner and outer magnetic disk 64,65 respectively; the lower magnetic return device 6 is arranged at the lower end of the second positioning piece 4;

The planar voice coil loudspeaker of the embodiment of the present utility model can be formed by the above components. When the planar voice coil speaker of the embodiment of the utility model is powered on, the inner and outer magnets 52, 53, 62, and 63 arranged therein will generate a strong magnetic field, which will cause the voice coil 11 of the circuit board diaphragm 1 to be affected by the magnetic field As for vibration, the vibration force of the circuit board diaphragm 1 in the embodiment of the present invention will be distributed on the entire surface of the circuit board diaphragm 1 , thereby effectively enhancing the rigidity of the circuit board diaphragm 1 .

Referring to Figure 4, it is a schematic cross-sectional view of another embodiment of the planar voice coil speaker provided by the utility model. In the embodiment of the utility model, the positioning diaphragm 2 can only be provided with a single hanging edge 21, and the single hanging edge 21 can still be used. achieve good rigidity.

Referring to Fig. 5, the voice coil 11 on the circuit board diaphragm 1 can also be completely covered on its upper surface or lower surface, and a plurality of holes (not shown in the drawing) are provided on the inner guiding disk 54,64. Indicates), which can effectively reduce the membrane vibration. In addition, a plurality of notches 13 (as shown in FIG. 7 ) or an arched dome are added at the central part of the circuit board diaphragm 1 where membrane vibration easily occurs, so as to enhance the rigidity of the circuit board diaphragm 1 and reduce the Membrane vibration.

It should be noted that different forms of planar voice coil speakers can be produced according to the needs of actual applications, such as the number and distribution of the inner and outer magnets 52, 53, 62, 63 can be changed, or the number and distribution of the inner and outer magnets 52, 53, 62, 63 can be changed, or the diaphragm 1 Multiple sets of voice coils 11 are arranged on the circuit board diaphragm 1 in parallel or in series, so that the magnetic strength is denser and the manufacture is easier.

Referring to shown in Fig. 6, it is the view of another embodiment of the planar voice coil loudspeaker provided by the utility model, can save the upper magnetic return device 5 in the planar voice coil loudspeaker structure in the above-mentioned each embodiment in the present embodiment, and use A cover plate 7 replaces the first positioning piece 3, and a plurality of tuning holes 71 are opened on the cover plate. The structure in this embodiment can also reduce the occurrence of membrane vibration.

It should be noted that, regardless of any type of speaker, as long as the circuit board diaphragm inside it is flattened, and the magnetic force is strengthened by internal and external magnets of any size to reduce the vibration of the membrane state, it should be included in this practical application. Within the scope of the novel embodiment.

The planar voice coil speaker described in the utility model is composed of a circuit board diaphragm, a positioning diaphragm, a positioning sheet, etc. to form a planar voice coil speaker. The circuit board diaphragm can make the generated vibration force distributed on the entire circuit board diaphragm, not only It can reduce unnecessary deformation during vibration, and can effectively resist the resistance of the air, and can solve the problem of insufficient rigidity of the circuit board diaphragm itself; moreover, it only needs to form a planar voice coil through the circuit board diaphragm, positioning diaphragm, positioning piece, etc. The loudspeaker has simple structure, easy operation and low manufacturing cost.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (8)

1. A planar voice coil loudspeaker, characterized in that it mainly comprises: A circuit board diaphragm on which a voice coil is arranged; A positioning diaphragm, on which at least one hanging edge is formed; the positioning diaphragm is glued to the upper end surface of the circuit board diaphragm; A first positioning piece, which is arranged on the upper edge of the positioning diaphragm; A second positioning piece, which is arranged at the lower end edge of the positioning diaphragm; An upper magnet return device, which includes an upper guide disk, and at least one tuning hole is opened on the upper guide disk, a first inner magnet and a first outer magnet are arranged on the inner surface of the upper magnet return device, And glue a first inner guide disc on the first inner magnet, and glue a first outer guide disc on the first outer magnet; the upper magnetic return device is arranged at the upper end of the first positioning piece; The lower magnet return device includes a lower guide disk, and at least one tuning hole is opened on the lower guide disk, a second inner magnet and a second outer magnet are arranged on the inner surface of the lower magnet return device, and A second inner conductive disk is glued on the second inner magnet, and a second outer conductive disk is glued on the second outer magnet; the lower magnet return device is arranged at the lower end of the second positioning piece. 2. The planar voice coil loudspeaker according to claim 1, wherein the voice coil on the circuit board diaphragm is completely covered on the upper surface or the lower surface thereof. 3 . The planar voice coil speaker as claimed in claim 1 , wherein a plurality of holes are respectively opened on the first inner guiding disk and the second inner guiding disk to reduce membrane vibration. 4 . 4. The planar voice coil speaker according to claim 1, wherein a plurality of notches, dome notches and notches on the voice coil line are added to the center of the circuit board diaphragm to strengthen the circuit board Rigid strength of the diaphragm. 5. A planar voice coil loudspeaker, characterized in that it mainly comprises: A circuit board diaphragm on which a voice coil is arranged; A positioning diaphragm, on which at least one hanging edge is formed; the positioning diaphragm is glued to the upper end surface of the circuit board diaphragm; A positioning piece, which is arranged at the lower end edge of the positioning diaphragm; A guide disk, on which at least one tuning hole is opened, an inner magnet and an outer magnet are arranged on the inner surface of the guide disk, and an inner guide disk is glued on the inner magnet, and an inner magnet is glued on the outer magnet. Outer guide disk; the guide disk is set at the lower end of the positioning piece; A cover plate, at least one tuning hole is opened on the cover plate; the cover plate is arranged at the upper end of the positioning piece. 6. The planar voice coil loudspeaker as claimed in claim 5, wherein the voice coil on the circuit board diaphragm is completely covered on its upper surface or lower surface. 7 . The planar voice coil speaker as claimed in claim 5 , wherein a plurality of holes are opened on the inner conductive disk to reduce membrane vibration. 8 . 8. The planar voice coil speaker according to claim 5, wherein a plurality of notches, dome notches and notches on the voice coil line are added to the center of the circuit board diaphragm to strengthen the circuit board Rigid strength of the diaphragm.

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