CN114286264B

CN114286264B - Thin double-side vibration loudspeaker

Info

Publication number: CN114286264B
Application number: CN202210017962.2A
Authority: CN
Inventors: 李秉彧; 吕剑; 李仪勇; 刘赞华; 张春燕
Original assignee: Dongguan Shunhefeng Electric Co ltd
Current assignee: Dongguan Shunhefeng Electric Co ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2023-02-28
Anticipated expiration: 2042-01-07
Also published as: CN114286264A

Abstract

The invention provides a thin double-sided vibration loudspeaker, which comprises a magnetic return component, a first vibration component and a second vibration component; the magnetic return assembly comprises a main magnetic plate, a first magnetic circuit unit, a second magnetic circuit unit and side magnetic circuit units, wherein the first magnetic circuit unit is arranged on one surface of the main magnetic plate, the second magnetic circuit unit is arranged on the other surface of the main magnetic plate, the side magnetic circuit units are arranged on the main magnetic plate and correspond to two sides of the first magnetic circuit unit, the first vibration assembly is arranged on one surface of the magnetic return assembly, and the second vibration assembly is arranged on the other surface of the magnetic return assembly. Therefore, the thin double-sided vibration loudspeaker can meet the requirement of thinning, and has the effects of vibration reduction and bidirectional sound production.

Description

Thin type double-side vibration loudspeaker

Technical Field

The invention relates to a thin type double-sided vibration loudspeaker, in particular to a thin type double-sided vibration loudspeaker which can meet the requirement of thinning and can achieve vibration reduction and bidirectional sound production effects.

Background

In order to achieve the purpose of bidirectional sound generation, a general speaker usually combines two vibration assemblies and two magnetic return assemblies in a symmetrical design, which makes it difficult to achieve a thinner speaker.

Therefore, it is an active disclosure of the present invention to provide a thin type dual-side vibrating speaker, which can meet the requirement of thin type, and has the purpose of vibration damping and bidirectional sound generation.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present inventors have felt that they are not perfect, and then have diligent research and overcome the above-mentioned shortcomings, and further develop a thin type double-sided vibration speaker, which is expected to achieve the requirement of thinning, and also have the purpose of vibration reduction and two-way sound production.

To achieve the above and other objects, the present invention provides a thin type double-sided vibration speaker, comprising: the magnetic return component, the first vibration component and the second vibration component. The magnetic return assembly comprises a main magnetic plate, a first magnetic circuit unit, a second magnetic circuit unit and two side magnetic circuit units, wherein the main magnetic plate is provided with a central plate body and two side plate bodies, a first assembling portion is arranged on a first surface of the central plate body, a second assembling portion is arranged on a second surface of the central plate body, the central plate body is provided with a communicating portion, the communicating portion is communicated with the first assembling portion and the second assembling portion, the central plate body is provided with a ventilating portion communicated with the first surface and the second surface, the side plate bodies are arranged on two sides of the central plate body, a third assembling portion is arranged on the surface of each side plate body, the first magnetic circuit unit is arranged on the first assembling portion, the second magnetic circuit unit is arranged on the second assembling portion, the side magnetic circuit units are arranged on the third assembling portions, the first magnetic circuit unit and the second magnetic circuit unit are mutually attached through the communicating portion, and the side magnetic circuit units correspond to two sides of the first magnetic circuit unit; the first vibration component comprises a first loudspeaker seat, a first voice coil and a first vibrating diaphragm, the first loudspeaker seat is matched with the first surface of the magnetic return component, the first voice coil is movably arranged between the first magnetic circuit unit and each side magnetic circuit unit, and the first vibrating diaphragm is matched with the first loudspeaker seat; the second vibration component comprises a second loudspeaker seat, a second voice coil and a second vibrating diaphragm, the second loudspeaker seat is matched with the second surface of the magnetic return component, the second voice coil is movably arranged on the periphery of the outer side of the second magnetic circuit unit, the second vibrating diaphragm is matched with the second loudspeaker seat, and the second loudspeaker seat is combined with the first loudspeaker seat.

To achieve the above and other objects, the present invention provides a thin type dual-sided vibration speaker, comprising: the magnetic return component, the first vibration component and the second vibration component. The magnetic return assembly comprises a main magnetic plate, a first magnetic circuit unit, a second magnetic circuit unit and two side magnetic circuit units, wherein the main magnetic plate is provided with a central plate body and two side plate bodies, a first assembling portion is arranged on the first surface of the central plate body, a second assembling portion is arranged on the second surface of the central plate body, the central plate body is provided with a ventilating portion communicated with the first surface and the second surface, the side plate bodies are arranged on two sides of the central plate body, a third assembling portion is arranged on the surface of each side plate body, the first magnetic circuit unit is arranged on the first assembling portion, the second magnetic circuit unit is arranged on the second assembling portion, the side magnetic circuit units are arranged on the third assembling portions, and the side magnetic circuit units correspond to two sides of the first magnetic circuit unit; the first vibration component comprises a first loudspeaker seat, a first voice coil and a first vibrating diaphragm, the first loudspeaker seat is matched with the first surface of the magnetic return component, the first voice coil is movably arranged between the first magnetic circuit unit and each side magnetic circuit unit, and the first vibrating diaphragm is matched with the first loudspeaker seat; the second vibration component comprises a second loudspeaker seat, a second voice coil and a second vibrating diaphragm, the second loudspeaker seat is matched with the second surface of the magnetic return component, the second voice coil is movably arranged on the periphery of the outer side of the second magnetic circuit unit, the second vibrating diaphragm is matched with the second loudspeaker seat, and the second loudspeaker seat is combined with the first loudspeaker seat.

In the above-mentioned thin double-sided vibration speaker, the first voice coil is movably disposed outside the central plate, and the central plate has four lead angles.

In the thin double-sided vibration speaker, the two sides of the central plate body are respectively connected with the side plate bodies through the bending sections, the second surface of the central plate body forms the second concave assembly part through the bending sections, and the third assembly parts are lower than the first assembly parts, so that the side magnetic circuit units respectively correspond to the two sides of the first magnetic circuit units.

In the thin double-sided vibration speaker, two ends of each side plate body are respectively provided with a limiting part, and the inner edge of the second horn base is provided with a fixed connection part correspondingly combined with each limiting part.

In the thin double-sided vibration speaker, the first magnetic circuit unit at least comprises a first magnet and a first magnetic conduction plate, the first magnet is arranged on the first assembly portion, the first magnetic conduction plate is arranged on the first magnet, the second magnetic circuit unit at least comprises a second magnet and a second magnetic conduction plate, the second magnet is arranged on the second assembly portion, the second magnetic conduction plate is arranged on the second magnet, and the first magnet is mutually attached to the second magnet through the communicating portion.

In the thin double-sided vibration speaker, each of the side magnetic circuit units has at least one side magnet and at least one side magnetic conductive plate, the side magnet is disposed in the third assembly portion, and the side magnetic conductive plate is disposed in the side magnet.

In the thin double-sided vibration speaker, each side magnetic circuit unit is provided with a plurality of side magnets, air holes are formed between the adjacent side magnets, the air holes are communicated with the ventilation part, the first horn seat and the second horn seat are respectively provided with corresponding ventilation gaps, and the ventilation gaps are communicated with the ventilation part.

In the thin double-sided vibration speaker, a width and a length of the first voice coil are greater than a width and a length of the second voice coil, and a magnetic force of the first magnetic circuit unit is smaller than a magnetic force of the second magnetic circuit unit.

In the thin double-sided vibration speaker, two ends of one side of the first speaker base are respectively provided with a first conductive part and a first lead groove, and two leads of the first voice coil are respectively electrically connected with the first conductive parts through the first lead grooves; two ends of one side of the second loudspeaker seat are respectively provided with a second conductive part and a second lead groove, two leads of the second voice coil are respectively and electrically connected with the second conductive parts through the second lead grooves, and the first conductive parts are electrically connected with the second conductive parts.

Therefore, the thin double-sided vibration loudspeaker can meet the requirement of thinning, and has the effects of vibration reduction and bidirectional sound production.

Drawings

Fig. 1 is an external view of a thin type double-sided vibration speaker according to the present invention;

FIG. 2 is an exploded view of a thin, double-sided vibrating speaker according to the present invention;

FIG. 3 is another exploded view of the thin double-sided vibrating speaker of the present invention;

FIG. 4 is an exploded view of the magnetic return element of the present invention;

FIG. 5 is a first view illustrating an assembled state of the gyromagnetic component element of the present invention;

FIG. 6A is a second schematic view of the magnetic return element in an assembled state according to the present invention;

FIG. 6B is a third schematic view illustrating an assembled state of the magnetic return element of the present invention;

FIG. 7A is a fourth illustration of the magnetic return element of the present invention in an assembled state;

FIG. 7B is a fifth schematic view illustrating an assembled state of the magnetic return element according to the present invention;

FIG. 8 isbase:Sub>A schematic view of the cross-sectional view A-A of FIG. 1 according to the present invention;

FIG. 9 is a schematic view of a cross-sectional view B-B of FIG. 1 according to the present invention;

FIG. 10 is a schematic view of a first voice coil movably disposed outside a center plate according to the present invention;

FIG. 11 is a schematic view of the appearance of another embodiment of the main magnetic plate of the present invention;

FIG. 12 is a schematic diagram of an embodiment of a gyromagnetic assembly of the present invention;

fig. 13 is a schematic cross-sectional view of a thin type dual-sided vibration speaker according to another embodiment of the present invention.

[ description of symbols ]

10. Thin type double-side vibration loudspeaker

10' thin type double-side vibration loudspeaker

1. Magnetic return assembly

1' magnetic return assembly

11. Leading magnetic plate

11' leading magnetic plate

111. Central plate body

111' center plate body

1111. A first assembling part

1111' first assembling part

1112. Second assembling part

1112' second Assembly

1113. Communicating part

1114. Ventilation part

1114' venting section

1115. Bending section

1115' bending section

1116. Lead angle

112. Side plate body

112' side plate body

1121. Third assembling part

1121' third Assembly

1122. Limiting part

1122' limit part

12. First magnetic circuit unit

121. First magnet

122. First magnetic conduction plate

13. Second magnetic circuit unit

131. Second magnet

132. Second magnetic conduction plate

14. Side magnetic circuit unit

141. Side magnet

142. Side magnetic guide plate

143. Air vent

2. First vibration component

21. First horn base

22. First voice coil

221. Lead wire

23. First diaphragm

24. Ventilation gap

25. A first conductive part

26. First lead groove

3. Second vibrating assembly

31. Second horn base

311. Fastening part

32. Second voice coil

321. Lead wire

33. Second diaphragm

34. Ventilation notch

35. A second conductive part

36. Second lead groove

Detailed Description

For a fuller understanding of the objects, features and advantages of the present invention, reference should now be made to the following detailed description taken in conjunction with the accompanying drawings, in which:

referring to fig. 1 to 9, as shown in the drawings, the present invention provides a thin type dual-side vibration speaker 10, which includes: the magnetic return component 1, the first vibration component 2 and the second vibration component 3.

The magnetic return assembly 1 includes a main magnetic plate 11, a first magnetic circuit unit 12, a second magnetic circuit unit 13, and two side magnetic circuit units 14, wherein the main magnetic plate 11 has a central plate 111 and two side plates 112, the first surface of the central plate 111 has a first assembling portion 1111, the second surface of the central plate 111 has a second assembling portion 1112, the central plate 111 has a communicating portion 1113 (e.g. a communicating hole), the communicating portion 1113 communicates the first assembling portion 1111 with the second assembling portion 1112, the central plate 111 has a communicating portion 1114 (e.g. a communicating hole) communicating the first surface with the second surface, the side plates 112 are disposed on both sides of the central plate 111, the surface of each side plate 112 has a third assembling portion 1121, the first magnetic circuit unit 12 is disposed on the first assembling portion 1111, the second magnetic circuit unit 13 is disposed on the second assembling portion 1112, the side magnetic circuit units 14 are disposed on the third assembling portion, and the first magnetic circuit unit 12 and the second magnetic circuit unit 13 are attached to the magnetic circuit units 1121 through the communicating portions 1113 and the magnetic circuit sides 14.

The first vibration component 2 includes a first speaker base 21, a first voice coil 22 and a first vibrating diaphragm 23, the first speaker base 21 is adapted to the first surface of the magnetic return component 1, the first voice coil 22 is movably disposed in a magnetic gap between the first magnetic circuit unit 12 and each of the side magnetic circuit units 14, and the first vibrating diaphragm 23 is adapted to the first speaker base 21.

The second vibration assembly 3 includes a second speaker base 31, a second voice coil 32 and a second diaphragm 33, the second speaker base 31 is adapted to the second surface of the magnetic loop assembly 1, the second voice coil 32 is movably disposed in the magnetic gap at the outer periphery of the second magnetic circuit unit 13, the second diaphragm 33 is adapted to the second speaker base 31, and the second speaker base 31 and the first speaker base 21 are combined with each other.

As shown in fig. 4 to 7B, wherein the lower diagram of fig. 5 is a side view of the upper diagram, the lower diagram of fig. 6B is a side view of the upper diagram, and the lower diagram of fig. 7B is a cross-sectional view of the upper diagram, when the magnetic return assembly 1 is assembled, each side magnetic circuit unit 14 can be first fixed to each side plate 112 of the main magnetic plate 11 and then magnetized, then the second magnetic circuit unit 13 is first magnetized and then fixed to the second assembling portion 1112 of the central plate 111, and finally the first magnetic circuit unit 12 is first magnetized and then fixed to the first assembling portion 1111 of the central plate 111 by a related jig (not shown), and the first magnetic circuit unit 12 and the second magnetic circuit unit 13 are bonded to each other, and the polarities of the bonding surfaces of the first magnetic circuit unit 12 and the second magnetic circuit unit 13 are the same (i.e., the polarities of the bonding surfaces of the first magnetic circuit unit 12 and the second magnetic circuit unit 13 are repulsive to each other), and the first magnetic circuit unit 12 and the second magnetic circuit unit 12 and the magnetic circuit 13 are bonded to the two sides of the magnetic circuit communicating portion of the magnetic circuit 14 through the magnetic circuit communicating portion 1113. After the above assembly is completed, the first voice coil 22 of the first vibration element 2 is movably disposed in the magnetic gap between the first magnetic circuit unit 12 and each of the side magnetic circuit units 14, the second voice coil 32 of the second vibration element 3 is movably disposed in the magnetic gap at the outer periphery of the second magnetic circuit unit 13, and the second horn base 31 and the first horn base 21 are combined with each other. After the above-mentioned combination, the first magnetic circuit unit 12 and the second magnetic circuit unit 13 can be directly attached to each other, so as to reduce the overall height of the magnetic loop assembly 1, and the thin double-sided vibration speaker 10 is formed after the magnetic loop assembly 1, the first vibration assembly 2 and the second vibration assembly 3 are combined with each other.

As shown in fig. 1 to 4 and 8 to 10, when the thin-type dual-side vibration speaker 10 of the present invention is used, the thin-type dual-side vibration speaker 10 can be combined with a sound box (not shown), such that the first voice coil 22 forms an upper independent magnetic field through the first magnetic circuit unit 12 and each side magnetic circuit unit 14, and the second voice coil 32 forms a lower independent magnetic field through the second magnetic circuit unit 13, such that the thin-type dual-side vibration speaker 10 forms an upper and a lower completely independent magnetic fields, such that the first voice coil 22 and the second voice coil 32 push the first diaphragm 23 and the second diaphragm 33 to vibrate through electromagnetic action.

When the first vibration component 2 and the second vibration component 3 actuate, after the first voice coil 22 and the second voice coil 32 receive the electronic signal inputted from outside, the first vibration diaphragm 23 and the second vibration diaphragm 33 simultaneously actuate outwards and inwards, when the first vibration diaphragm 23 and the second vibration diaphragm 33 simultaneously actuate outwards, the air is pushed to vibrate and sound, and when the first vibration diaphragm 23 and the second vibration diaphragm 33 simultaneously actuate inwards, the two acting forces are mutually offset and reduced, so that the first vibration component 2 and the second vibration component 3 realize the function of vibration reduction, thereby avoiding the acting force generated by actuating the first vibration diaphragm 23 and the second vibration diaphragm 33 to drive the whole thin double-sided vibration loudspeaker 10 to vibrate.

In addition, in the central plate 111, in addition to the first assembling portion 1111 positioning the first magnetic circuit unit 12 and the second assembling portion 1112 accommodating the second magnetic circuit unit 13, the central plate 111 itself is also a part of the magnetic conductive plate, so the central plate 111 can also extend from two ends thereof to two side plates 112 to perform the magnetic conductive function, so that the magnetic force of the first magnetic circuit unit 12 can extend to two ends of the long axis of the first voice coil 22 (as shown in fig. 8 and 10). Furthermore, as shown in fig. 10, since the first voice coil 22 is movably disposed outside the central plate 111, the central plate 111 may have four guiding angles 1116 to avoid the first voice coil 22, so as to prevent the first voice coil 22 from colliding with the central plate 111 during vibration and causing interference.

In addition, since the central plate 111 of the main magnetic guiding plate 11 has a plurality of ventilation portions 1114 communicating the first surface and the second surface of the central plate 111, when the first vibration element 2 and the second vibration element 3 are actuated to generate air flows, the air flows can be sufficiently offset by the ventilation portions 1114, so as to achieve the purpose of damping the vibration of the thin-type dual-side vibration speaker 10, and avoid noise and distortion caused by resonance.

Thus, the thin type double-sided vibration loudspeaker 10 of the invention can achieve the requirements of thinning and the effects of vibration reduction and two-way sound production, and the two-way sound production effect is realized through the design of the double-sided vibration films of the first vibration film 23 and the second vibration film 33, so as to improve the output volume and the bass effect of the thin type double-sided vibration loudspeaker 10. More importantly, the first vibration component 2 and the second vibration component 3 can be actuated simultaneously to counteract the acting force therebetween, and further increase the damping force of the thin-type dual-side vibration speaker 10, so as to prevent the first diaphragm 23 and the second diaphragm 33 from vibrating and driving the entire thin-type dual-side vibration speaker 10 to generate unnecessary vibration, thereby avoiding noise and distortion due to resonance. In addition, in the thin double-sided vibration speaker 10 according to the present invention, the first magnetic circuit unit 12 and each of the side magnetic circuit units 14 form an upper independent magnetic field, and the second magnetic circuit unit 13 forms a lower independent magnetic field, so that the upper and lower independent magnetic circuits share one main magnetic plate 11, and thus the height of the thin double-sided vibration speaker 10 as a whole is not increased. Furthermore, the thin-type dual-side vibration speaker 10 of the present invention can make the air flow and the acting force generated when the first diaphragm 23 and the second diaphragm 33 are actuated fully offset by the cooperation of the air vents 1114, and exhaust a portion of air out of the thin-type dual-side vibration speaker 10 to adjust the redundant air flow inside the thin-type dual-side vibration speaker 10, so as to increase the vibration damping force of the thin-type dual-side vibration speaker 10, thereby preventing the first diaphragm 23 and the second diaphragm 33 from driving the whole thin-type dual-side vibration speaker 10 to generate unnecessary vibration when vibrating, and achieving the purpose of damping the thin-type dual-side vibration speaker 10, so as to avoid noise and distortion generated by resonance.

As shown in fig. 4 to 7B, in the embodiment of the invention, two sides of the central plate 111 are respectively connected to the side plate 112 by a bending section 1115, the second surface of the central plate 111 forms the second assembling portion 1112 in a concave shape by the bending section 1115, and the third assembling portions 1121 are lower than the first assembling portion 1111, so that the side magnetic circuit units 14 respectively correspond to two sides of the first magnetic circuit unit 12. As shown in fig. 4 and fig. 7B, the top surfaces of the side plate bodies 112 may be respectively a first stage (third assembly portion 1121) for disposing the side magnetic circuit unit 14, the top surfaces of the bending sections 1115 may be respectively a second stage, and the top surface of the central plate body 111 may be a third stage. In addition, as shown in fig. 4, 7A and 7B, the communication portion 1113 may be a rectangular hole penetrating through the third step platform, and the first assembly portion 1111 may be a top surface of two long sides of the communication portion 1113 and end surfaces of two short sides of the communication portion 1113 to combine the first magnetic circuit unit 12, so that the first magnetic circuit unit 12 is confined between the end surfaces of the two short sides of the communication portion 1113. As shown in fig. 6A and 6B, the second assembly part 1112 may be located between the second stage stages, and the second assembly part 1112 may be a side surface of two long sides of the communication part 1113 and a top surface of two short sides of the communication part 1113 to couple the second magnetic circuit unit 13, so that the second magnetic circuit unit 13 is confined between the side surfaces of the two long sides of the communication part 1113. In this way, by designing the main magnetic plate 11, the first magnetic circuit unit 12 and the second magnetic circuit unit 13 are bonded to each other through the communication portion 1113, and the side magnetic circuit units 14 correspond to both sides of the first magnetic circuit unit 12, respectively, so that the overall height of the magneto-return element 1 can be reduced, and the demand for reduction in thickness can be achieved. In addition, when the thickness of the main magnetic plate 11 is only very thin, 0.5mm, the communication portion 1113 may decrease the strength of the main magnetic plate 11. Therefore, the strength of the main magnetic plate 11 can be increased by assembling the first magnetic path unit 12 and the second magnetic path unit 13 through the first assembling portion 1111, the second assembling portion 1112, and the communicating portion 1113. Furthermore, as shown in fig. 9, the first voice coil 22 and the second voice coil 32 can be respectively disposed on the upper and lower sides of the second stage, and the depth of the recess formed between the inner portions of the bending sections 1115 can be adjusted to match the vibration amplitudes required by the first voice coil 22 and the second voice coil 32.

As shown in fig. 2 and 3, in the embodiment of the invention, two ends of each side plate 112 respectively have a limiting portion 1122 (e.g., a notch), and an inner edge of the second speaker holder 31 has a fastening portion 311 (e.g., a convex body) correspondingly coupled to each limiting portion 1122. Thus, the limiting portions 1122 of the side plate bodies 112 of the main magnetic plate 11 and the fixing portion 311 of the second speaker holder 31 can be combined with each other, so that the magnetic return assembly 1 can be stably assembled.

As shown in fig. 4 to 9, in the embodiment of the present invention, the first magnetic circuit unit 12 at least has a first magnet 121 and a first magnetic conductive plate 122, the first magnet 121 is disposed on the first assembling portion 1111, and the first magnetic conductive plate 122 is disposed on the first magnet 121; the second magnetic circuit unit 13 at least includes a second magnet 131 and a second magnetic conductive plate 132, the second magnet 131 is disposed on the second assembling portion 1112, the second magnetic conductive plate 132 is disposed on the second magnet 131, the second magnet 131 of the second magnetic circuit unit 13 is attached to the first magnet 121 of the first magnetic circuit unit 12 through the communication portion 1113, and the polarities of the attachment surfaces of the first magnet 121 and the second magnet 131 are the same (i.e., the polarities of the attachment surfaces are opposite); each of the side magnetic circuit units 14 has at least one side magnet 141 and at least one side magnetic conductive plate 142, the side magnet 141 is disposed on the third assembly portion 1121, and the side magnetic conductive plate 142 is disposed on the side magnet 141. Thus, an independent magnetic field is formed above by the first magnetic circuit unit 12 and each of the side magnetic circuit units 14, and an independent magnetic field is formed below by the second magnetic circuit unit 13, so that the thin-type double-sided vibration speaker 10 forms two completely independent magnetic fields, i.e., upper and lower magnetic fields, and the first voice coil 22 and the second voice coil 32 push the first diaphragm 23 and the second diaphragm 33 to vibrate through electromagnetic action.

As shown in fig. 2 to 7B, the first magnetic circuit unit 12 and each side magnetic circuit unit 14 are designed in a multi-magnetic manner, for example: the magnetic field generator is composed of a first magnet 121 and four side magnets 141, wherein the side magnets 141 on the same side share a side magnetic guide plate 142; in addition, one side magnetic guide plate 142 may be disposed for each side magnet 141, that is, four side magnetic guide plates 142 are designed, and when the aspect ratio of the speaker is longer, a seven-magnetic design may be adopted, that is, a first magnet 121 and six side magnets 141 are formed. Or, according to practical requirements, the first magnetic circuit unit 12 and each side magnetic circuit unit 14 are designed in a three-magnet type, for example: comprises a first magnet 121 and two side magnets 141, and each side magnet 141 has a side magnetic conductive plate 142.

As shown in fig. 1 to 7B, in the embodiment of the present invention, when each of the side magnetic circuit units 14 has a plurality of side magnets 141, an air hole 143 is formed between adjacent side magnets 141, the air hole 143 is communicated with the air vent portion 1114, the first horn base 21 and the second horn base 31 are respectively provided with

corresponding air vents

24 and 34, and the air vents 24 and 34 are communicated with the air vent portion 1114. Thus, the thin type double-sided vibration loudspeaker 10 of the present invention can make the air flow and the acting force generated when the first diaphragm 23 and the second diaphragm 33 operate sufficiently offset by the cooperation of the ventilation portion 1114, the ventilation hole 143 and the

ventilation notches

24, 34, and can exhaust part of the air to the outside of the thin type double-sided vibration loudspeaker 10, so as to adjust the redundant air flow inside the thin type double-sided vibration loudspeaker 10, to increase the vibration damping force of the thin type double-sided vibration loudspeaker 10, to prevent the first diaphragm 23 and the second diaphragm 33 from driving the whole thin type double-sided vibration loudspeaker 10 to generate unnecessary vibration when vibrating, thereby achieving the purpose of damping vibration of the thin type double-sided vibration loudspeaker 10, and to avoid noise and distortion caused by resonance.

As shown in fig. 3, 8 and 9, in the embodiment of the present invention, the width and length of the first voice coil 22 are greater than those of the second voice coil 32. In the embodiment of the present invention, although the magnetic force of the first magnet 121 is smaller than the magnetic force of the second magnet 131, the first voice coil 22 of the first vibration element 2 is larger, so the winding is longer, and the longer winding of the first voice coil 22, together with the first magnetic circuit unit 12 and each side magnetic circuit unit 14, will contribute to increasing the electromagnetic acting force, so that the electromagnetic force pushing the first vibration element 2 is substantially the same as the electromagnetic force pushing the second vibration element 3, and further the displacement of the first vibration film 23 and the second vibration film 33 during the actuation is similar, so the air flows generated by the actuation of the two vibration films can be fully cancelled, thereby achieving the purpose of vibration suppression. In addition, as shown in fig. 3 and 8, the first magnetic circuit unit 12 can extend the magnetic field of the first magnetic circuit unit 12 to the vicinity of the two short sides of the inner edge of the first voice coil 22 through the two ends of the central plate 111 to enhance the electromagnetic effect between the first magnetic circuit unit 12 and the first voice coil 22.

As shown in fig. 1 to 3, in the embodiment of the present invention, two ends of one side of the first speaker holder 21 are respectively provided with a first conductive portion 25 (e.g. an L-shaped conductive plate) and a first lead groove 26, and two leads 221 of the first voice coil 22 are respectively electrically connected to the first conductive portions 25 through the first lead grooves 26; a second conductive portion 35 (e.g., an L-shaped conductive plate) and a second lead groove 36 are respectively disposed at two ends of one side of the second speaker holder 31, and the two leads 321 of the second voice coil 32 are electrically connected to the second conductive portions 35 through the second lead grooves 36 respectively. In the embodiment of the present invention, the first conductive part 25 and the second conductive part 35 are located on the same side of the thin-type dual-side vibrating speaker 10, when the first speaker holder 21 and the second speaker holder 31 are assembled and combined, each of the first conductive parts 25 and each of the second conductive parts 35 are electrically connected to each other to be conductive (i.e. two voice coils are connected in parallel), wherein each of the second conductive parts 35 may protrude from the second speaker holder 31, so that an external sound source signal can actuate the first voice coil 22 and the second voice coil 32 simultaneously when electrically connecting each of the second conductive parts 35. In addition, in this embodiment, the two leads 221 of the first voice coil 22 may first contact the first conductive parts 25 through the first lead grooves 26, respectively, the two leads 321 of the second voice coil 32 may first contact the second conductive parts 35 through the second lead grooves 36, respectively, and then the leads 221, the leads 321, the first conductive parts 25, and the second conductive parts 35 located on the same side may be soldered together.

Referring to fig. 11 to 13, as shown in the drawings, the present invention provides another thin type double-sided vibration speaker 10', which is different from the thin type double-sided vibration speaker 10 described above in that the central plate 111' of the main magnetic plate 11 'of the magnetic return assembly 1' of the present embodiment does not have a communication portion, the first assembly portion 1111 'is located on the top surface of the central plate 111' to install the first magnetic circuit unit 12, and the second assembly portion 1112 'is located on the bottom surface of the central plate 111' to install the second magnetic circuit unit 13. The thin double-sided vibration speaker 10' of the present embodiment is similar to the thin double-sided vibration speaker 10 described above in that the central plate 111' has a ventilation portion 1114' communicating the top surface and the bottom surface, two side plate bodies 112' are provided on both sides of the central plate 111', the top surface of each side plate body 112' has a third assembly portion 1121' for providing a side magnetic circuit unit 14, each side magnetic circuit unit 14 corresponds to both sides of the first magnetic circuit unit 12, both ends of each side plate body 112' have a stopper portion 1122', respectively, the first vibration element 2 is disposed on the top surface of the magnetic return element 1', the second vibration element 3 is disposed on the bottom surface of the magnetic return element 1', both sides of the central plate 111' can be connected to each side plate body 112', except that the bending section 1115' of the present embodiment is two-fold type, the bending section 1115 is four-fold type, and the bending section 1115' can form the second assembly portion 1115' having a recessed shape on the bottom surface of the central plate body 111' and make each third assembly portion 1112' lower than the first assembly portion 1121' corresponding to both sides of the magnetic circuit unit 12. Therefore, the thin double-sided vibration loudspeaker 10' of the present embodiment can form an upper independent magnetic field by the first magnetic circuit unit 12 and each side magnetic circuit unit 14, and form a lower independent magnetic field by the second magnetic circuit unit 13, and the upper and lower independent magnetic circuits share one main magnetic plate 11', so that the overall height of the thin double-sided vibration loudspeaker 10' is not increased. In addition, as for the remaining structures and effects not described in the present embodiment, reference may be made to the thin-type dual-side vibration speaker 10 described above.

While the invention has been described in terms of preferred embodiments, it will be understood by those skilled in the art that the examples are intended in a descriptive sense only and not for purposes of limitation. It should be noted that all changes and substitutions equivalent to the embodiments are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A thin dual-sided vibrating speaker, comprising:

the magnetic return assembly comprises a main magnetic plate, a first magnetic circuit unit, a second magnetic circuit unit and two side magnetic circuit units, wherein the main magnetic plate is provided with a central plate body and two side plate bodies, a first surface of the central plate body is provided with a first assembling portion, a second surface of the central plate body is provided with a second assembling portion, the central plate body is provided with a communicating portion, the communicating portion is communicated with the first assembling portion and the second assembling portion, the central plate body is provided with a ventilating portion communicated with the first surface and the second surface, the side plate bodies are arranged on two sides of the central plate body, the surface of each side plate body is provided with a third assembling portion, the first magnetic circuit unit is arranged on the first assembling portion, the second magnetic circuit unit is arranged on the second assembling portion, the side magnetic circuit units are arranged on the third assembling portions, the first magnetic circuit unit and the second magnetic circuit unit are mutually attached through the communicating portion, the side units correspond to two sides of the first magnetic circuit unit, two sides of the central plate body are respectively connected with the side plate bodies through bending sections, the second magnetic circuit assembling portion is bent to form a second assembling portion, and the second magnetic circuit assembling portion is lower than the second magnetic circuit assembling portion;

the first vibration component comprises a first loudspeaker seat, a first voice coil and a first vibrating diaphragm, the first loudspeaker seat is matched with the first surface of the magnetic return component, the first voice coil is movably arranged between the first magnetic circuit unit and each side magnetic circuit unit, and the first vibrating diaphragm is matched with the first loudspeaker seat; and

the second vibration component comprises a second loudspeaker seat, a second voice coil and a second vibrating diaphragm, the second loudspeaker seat is matched with the second surface of the magnetic return component, the second voice coil is movably arranged on the periphery of the outer side of the second magnetic circuit unit, the second vibrating diaphragm is matched with the second loudspeaker seat, and the second loudspeaker seat is combined with the first loudspeaker seat.

2. The thin, double-sided vibration speaker as recited in claim 1, wherein the first voice coil is movably disposed outside the center plate, and the center plate has four lead angles.

3. The thin type dual-sided vibration speaker as claimed in claim 1, wherein the side plate bodies have a limiting portion at each end thereof, and the second speaker base has a fastening portion at an inner edge thereof for engaging with the limiting portion.

4. The thin type dual-sided vibration speaker as claimed in claim 1, wherein the first magnetic circuit unit has at least a first magnet and a first magnetic conductive plate, the first magnet is disposed on the first assembling portion, the first magnetic conductive plate is disposed on the first magnet, the second magnetic circuit unit has at least a second magnet and a second magnetic conductive plate, the second magnet is disposed on the second assembling portion, the second magnetic conductive plate is disposed on the second magnet, and the first magnet and the second magnet are bonded to each other through the communicating portion.

5. The thin type dual vibration speaker as claimed in claim 1, wherein each of the side magnetic circuit units has at least one side magnet provided to the third assembling portion and at least one side guide plate provided to the side magnet.

6. The thin type double-sided vibration loudspeaker according to claim 5, wherein each of the side magnetic circuit units has a plurality of side magnets, air holes are formed between adjacent side magnets, the air holes communicate with the vent portion, and the first horn base and the second horn base are respectively provided with corresponding air vent notches, the air vent notches communicate with the vent portion.

7. The thin type double-sided vibration speaker as claimed in claim 1, wherein the width and length of the first voice coil are larger than those of the second voice coil, and the magnetic force of the first magnetic circuit unit is smaller than that of the second magnetic circuit unit.

8. The thin type double-sided vibration speaker as claimed in claim 1, wherein both ends of one side of the first speaker holder are respectively provided with a first conductive portion and a first lead groove, and two leads of the first voice coil are respectively electrically connected to the first conductive portions through the first lead grooves; two ends of one side of the second loudspeaker seat are respectively provided with a second conductive part and a second lead groove, two leads of the second voice coil are respectively electrically connected with the second conductive parts through the second lead grooves, and the first conductive parts are electrically connected with the second conductive parts.