Panel loudspeaker

Abstract

A flat panel loudspeaker is provided with a vibrating diaphragm, the vibrating diaphragm is provided with conductive circuits, a wire group and a composite layer, the conductive circuits are in snake-shaped wiring, the wire group is used for increasing the strength of the central area of the vibrating diaphragm, the conductive circuits and the wire group are attached to the composite layer, the wire group is located between the conductive circuits, and the wire group is not in contact with the conductive circuits; the conductive circuit is provided with a plurality of straight line parts and a plurality of turning parts, one end or two ends of each straight line part are connected with the turning parts, and the straight line parts and the turning parts are connected in a staggered mode. According to the flat panel loudspeaker, the strength of the vibrating diaphragm can be enhanced, so that the service life is prolonged, a conductive circuit and a composite layer structure are not changed, and parts such as a control circuit do not need to be correspondingly changed. According to the flat panel loudspeaker, the wire group is only added in the central area of the vibrating diaphragm, namely in the range of the conductive circuit, so that the strength of the sound production area is ensured, the flexibility of the peripheral area of the vibrating diaphragm is not changed, and the sound production quality is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of earphone products, in particular to a flat-panel loudspeaker. Background Art

[0002] Flat-panel speakers are speakers that use a flat diaphragm. Flat-panel speakers are thinner and lighter, and can be used in some specific application scenarios. The working principle of flat-panel speakers is to produce sound by converting audio signals into mechanical vibrations. Flat-panel speakers are mainly composed of a diaphragm and a magnet; when the audio signal passes through the magnet, the magnet generates a constant magnetic field, and the diaphragm begins to vibrate through interaction with the magnet. These vibrations create pressure changes in the air, which form sound waves.

[0003] The core of the sound produced by a flat-panel speaker is the diaphragm, which is mainly composed of a conductive circuit and a composite layer. For example, Chinese Patent Publication No. CN220528226U discloses a flat-panel speaker diaphragm with an elastic folding ring. The diaphragm vibrates continuously during operation to generate sound waves, and the service life of the diaphragm is short. If the weight of the diaphragm is increased, for example, the conductive circuit in the diaphragm is thickened or coarsened, or the material and thickness of the diaphragm composite layer are changed, the service life of the diaphragm can be improved and extended. However, the above scheme requires corresponding changes to the control circuit and other components corresponding to the flat-panel speaker, resulting in processing difficulties and high costs. If the diaphragm composite layer is changed, the timbre of the diaphragm will be affected.

[0004] Therefore, in view of the shortcomings of the prior art, it is necessary to provide a flat speaker to solve the shortcomings of the prior art. Utility Model Content

[0005] The utility model aims to avoid the shortcomings of the prior art and provide a flat panel speaker which can enhance the strength of the diaphragm and thus prolong the service life.

[0006] The above-mentioned purpose of the utility model is achieved through the following technical measures:

[0007] A flat-panel speaker is provided, which is provided with a diaphragm. The diaphragm is provided with a conductive circuit with a serpentine routing, a wire group for increasing the strength of the central area of ​​the diaphragm, and a composite layer. The conductive circuit and the wire group are both bonded to the composite layer, the wire group is located between the conductive circuits, and the wire group does not contact the conductive circuits.

[0008] The conductive circuit is provided with a plurality of straight sections and a plurality of turning sections, one end or both ends of the straight sections are connected to the turning sections, and the straight sections are connected to the turning sections in a staggered manner.

[0009] The straight line portion and the turning portion are perpendicular to each other, all the straight line portions are parallel to each other, and there are gaps between the straight line portions and adjacent straight line portions.

[0010] Two straight line portions located in the same gap are defined as a straight line pair, a turning portion connected to any straight line portion in the straight line pair is defined as a current turning portion, and an area enclosed by an extension line of the edge of the current turning portion and the gap is defined as a reinforcement area.

[0011] The line group is located inside the reinforcement area, and the line group does not protrude from the reinforcement area.

[0012] Preferably, the wire group is provided with a plurality of metal wires, and all the metal wires are arranged in parallel.

[0013] Preferably, the metal wire is at least one of a straight line or a wavy line.

[0014] Preferably, the wire groups are provided in a plurality of groups, each wire group is provided in a reinforcement area, and each wire group has three metal wires.

[0015] The width of the metal wire is defined as A, and 0.1 mm<A≤2.0 mm exists.

[0016] The gap between the metal wires is defined as 0.05 mm < A < 0.1 mm.

[0017] Preferably, the metal wire is a metal wire engraved by laser from aluminum foil.

[0018] Preferably, the conductive circuit is a conductive circuit engraved by laser from aluminum foil.

[0019] The flat panel speaker of the utility model is also provided with two groups of magnetic groups, two brackets and two tuning nets, each group of magnetic groups is embedded in the side of a bracket, a tuning net, a bracket, a diaphragm, a bracket and a tuning net are stacked and assembled in sequence from front to back, and the two groups of magnetic groups are respectively located on both sides of the diaphragm.

[0020] Each magnetic group is provided with a plurality of parallel rectangular parallelepiped magnetic strips, and the magnetic strips are embedded in the bracket.

[0021] Preferably, the above-mentioned bracket is provided with a support plate, a enclosure, an embedding part and a positioning part. The enclosure is arranged around a side edge of the support plate, the embedding part and the positioning part are integrally connected to one side of the support plate, the short side surface of the magnetic strip is abutted against the positioning part, and the long side surface of the magnetic strip is embedded with the embedding part.

[0022] An assembly area for a magnetic strip is formed between one positioning piece and two pairs of corresponding embedding pieces. The magnetic strip slides into the assembly area from one side, and the two pairs of embedding pieces are symmetrically distributed on opposite sides of the assembly area.

[0023] Preferably, two opposite side surfaces of the magnetic strip are provided with through slide grooves, the slide grooves are located in the middle of the side surfaces, and the slide grooves are slidably connected to the embedded parts.

[0024] Preferably, a fixing hole is further provided inside the slide groove, and the fixing hole is clamped with the embedding part.

[0025] Preferably, the above-mentioned embedded component is provided with a main body, a first protrusion and a second protrusion, the main body is integrally connected to the support plate, the first protrusion is integrally connected to the upper part of the main body, the second protrusion is integrally connected to the outer surface of the first protrusion, the second protrusion can be slidably embedded in the slide groove, and the second protrusion is card-assembled in the fixing hole.

[0026] Preferably, the enclosure is provided with a plurality of notches for the magnetic strip to enter the assembly area, and each notch is arranged opposite to a positioning member.

[0027] Preferably, a channel for the magnetic strip to slide into is formed between the notch and the corresponding assembly area.

[0028] The utility model discloses a flat speaker, which is provided with a diaphragm, wherein the diaphragm is provided with a conductive circuit with a serpentine routing, a wire group and a composite layer for increasing the strength of the central area of ​​the diaphragm, wherein the conductive circuit and the wire group are both attached to the composite layer, the wire group is located between the conductive circuits, and the wire group does not contact the conductive circuit; the conductive circuit is provided with a plurality of straight sections and a plurality of turning sections, one end or both ends of the straight section are connected to the turning section, and the straight section is staggered with the turning section; the straight section is perpendicular to the turning section, all the straight sections are parallel to each other, and there is a gap between the straight section and the adjacent straight section; two straight sections located in the same gap are defined as a straight pair, two turning sections correspondingly connected to the two straight sections in the straight pair are defined as a turning pair, and the connecting line of the edge of the turning pair and the area formed by the gap are defined as a reinforcement area; the wire group is located inside the reinforcement area, and the wire group does not protrude from the reinforcement area. The flat speaker can enhance the strength of the diaphragm, thereby improving the service life, but will not change the conductive circuit and the composite layer structure, so there is no need to change the control circuit and other components accordingly. The flat-panel speaker only adds a wire group in the center area of ​​the diaphragm, that is, within the range of the conductive circuit, which ensures the strength of the sound-emitting area without changing the flexibility of the peripheral area of ​​the diaphragm, thereby not affecting the sound quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention is further described with reference to the accompanying drawings, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0030] Figure 1 This is a three-dimensional structural diagram of a flat-panel speaker.

[0031] Figure 2 An exploded diagram of a flat-panel speaker.

[0032] Figure 3 This is a structural diagram of the diaphragm.

[0033] Figure 4 A schematic diagram showing the diaphragm centerline group as having a shading.

[0034] Figure 5 This is a schematic diagram after hiding the diaphragm center line group.

[0035] Figure 6 Schematic diagram of the reinforced area in the diaphragm.

[0036] Figure 7 Schematic diagram of the line group.

[0037] Figure 8 A schematic diagram of the three-dimensional structure of the bracket.

[0038] Fig. 9 for Figure 8 Schematic diagram from another angle.

[0039] Fig.10 This is a schematic diagram of the structure after the magnetic strip and bracket are assembled.

[0040] Fig.11 A schematic diagram of the structure of a magnetic stripe.

[0041] Fig.12 A schematic diagram of the structure of a magnetic stripe.

[0042] exist Figures 1 to 12 Including:

[0043] Diaphragm 100,

[0044] Conductive circuit 110, straight line portion 111, turning portion 112,

[0045] Wire group 120, metal wire 121,

[0046] Composite layer 130,

[0047] Strengthening area 140,

[0048] Magnetic group 200, magnetic strip 210, slide slot 211, fixing hole 212,

[0049] Bracket 300,

[0050] Support plate 310,

[0051] Enclosure 320, gap 321,

[0052] The embedded part 330, the main body 331, the first protrusion 332, the second protrusion 333,

[0053] Positioning member 340,

[0054] Tuning Network 400. DETAILED DESCRIPTION

[0055] The technical solution of the utility model is further described in conjunction with the following embodiments.

[0056] Example 1

[0057] A flat speaker, such as Figure 1 and Figure 2 As shown, a diaphragm 100, two sets of magnetic groups 200, two brackets 300 and two tuning nets 400 are provided. Each set of magnetic groups 200 is embedded in the side of a bracket 300. A tuning net 400, a bracket 300, a diaphragm 100, a bracket 300 and a tuning net 400 are stacked and assembled in sequence from front to back. The two sets of magnetic groups 200 are respectively located on both sides of the diaphragm 100.

[0058] It should be noted that the magnetic assembly 200, the bracket 300 and the tuning net 400 of the present embodiment are conventional supporting components in the field of flat-panel speakers, and their corresponding functions are common knowledge in the field, and will not be described in detail here.

[0059] The diaphragm 100 is provided with a conductive circuit 110 with a serpentine routing, a wire group 120 for increasing the strength of the central area of ​​the diaphragm 100, and a composite layer 130. The conductive circuit 110 and the wire group 120 are both bonded to the composite layer 130, the wire group 120 is located between the conductive circuits 110, and the wire group 120 does not contact the conductive circuit 110.

[0060] The conductive circuit 110 is provided with a plurality of straight portions 111 and a plurality of turning portions 112. One end or both ends of the straight portion 111 are connected to the turning portion 112, and the straight portion 111 and the turning portion 112 are connected in an alternating manner. Figure 3 and Figure 4 , in order to facilitate the distinction, Figure 4 The line group 120 in FIG. 1 is a shading area.

[0061] The straight portion 111 and the turning portion 112 are perpendicular to each other, all the straight portions 111 are parallel to each other, and there is a gap between the straight portions 111 and the adjacent straight portions 111. Figure 5 , in order to facilitate the distinction, Figure 5 The line group 120 is hidden in Figure 5The middle straight portion 111 and the turning portion 112 are framed by dotted lines.

[0062] The two straight portions 111 located in the same gap are defined as a straight line pair, the turning portion 112 corresponding to and connected to any straight line portion 111 in the straight line pair is defined as the current turning portion 112, and the area enclosed by the extended line of the edge of the current turning portion 112 and the gap is defined as the reinforcement area 140, the line group 120 is located inside the reinforcement area 140, and the line group 120 does not protrude from the reinforcement area 140, such as Figure 6 , the strengthening area 140 is Figure 6 Middle band shading area.

[0063] It should be noted that the standard of the diaphragm 100 in the art is that the middle area has good rigidity and the peripheral area has good flexibility. The central area of ​​the diaphragm 100 mentioned in the utility model refers to the rectangular area enclosed by the edges of the turning parts 112 and the straight parts 111 in the conductive circuit 110, and the wire group 120 of the utility model does not protrude from the reinforcement area 140, that is, the wire group 120 is located in the gap inside the rectangular area and does not occupy other peripheral areas of the diaphragm 100. Therefore, the wire group 120 increases the strength of the central area of ​​the diaphragm 100, does not change the strength of the peripheral area, maintains the flexibility and elasticity of the peripheral area, and thus the flat speaker does not affect the sound quality.

[0064] The straight portion 111 and the turning portion 112 of the utility model are perpendicular to each other, thereby increasing the rigidity of the diaphragm 100 and improving the sound effect.

[0065] The wire group 120 is provided with a plurality of metal wires 121, and all the metal wires 121 are arranged in parallel. The metal wires 121 are at least one of straight lines or wavy lines. The wire group 120 is provided with a plurality of groups, and each group of wire groups 120 is arranged in a reinforcement area 140. Each group of wire groups 120 has three metal wires 121, such as Figure 7 The width of the metal wire is defined as A, and 0.1 mm < A ≤ 2.0 mm exists. The gap between the metal wire and the adjacent metal wire is defined as 0.05 mm < A < 0.1 mm.

[0066] It should be noted that after multiple experiments, it has been verified that both straight lines and wavy lines can improve the strength of the diaphragm 100. When the width and spacing of the metal wires 121 are the same, the wavy lines will increase the overall width of the wire group 120 and reduce the coverage of the wire group 120 in the reinforcement area 140, so the straight lines can increase the strength of the diaphragm 100. After multiple experiments, it has been verified that when the reinforcement area 140 is the same size and the total area of ​​the metal wires 121 is the same, if the wire group 120 is only provided with one or two thick straight lines, the rigidity is too strong, affecting the sound effect; when more than 3 metal wires 121 are provided, the width of the straight line is very thin, resulting in insufficient rigidity. Only when 3 metal wires 121 are provided and the size of the metal wires 121 is set within the above range, the effect is best.

[0067] The metal wire 121 is a metal wire 121 engraved by laser from aluminum foil; the conductive circuit 110 is a conductive circuit 110 engraved by laser from aluminum foil.

[0068] It should be noted that the metal wire 121 and the conductive circuit 110 of the present invention are both carved out of the same piece of aluminum foil, so no additional composite layer 130 is required, and the production is convenient and simple with low cost.

[0069] After the flat panel speaker of this embodiment has been subjected to an aging test of 500 hours of continuous and loud vibration, the diaphragm 100 has no wrinkles and no sound distortion. The comparative sample is a flat panel speaker without the wire group 120. After the aging test of 500 hours, the diaphragm 100 of the flat panel speaker has wrinkles and sound distortion. It can be seen that the flat panel speaker of this embodiment has a longer service life.

[0070] The flat panel speaker can enhance the strength of the diaphragm 100, thereby increasing its service life, but will not change the structure of the conductive circuit 110 and the composite layer 130, so there is no need to change the control circuit and other components accordingly. The flat panel speaker only adds the wire group 120 in the central area of ​​the diaphragm 100, that is, within the range of the conductive circuit 110, to ensure the strength of the sound-generating area, and will not change the flexibility of the surrounding area of ​​the diaphragm 100, thereby not affecting the sound quality.

[0071] Example 2

[0072] A flat panel speaker, other features of which are the same as those of the first embodiment, further has the following features: each magnetic group 200 is provided with a plurality of parallel and rectangular magnetic strips 210 , and the magnetic strips 210 are embedded in a bracket 300 .

[0073] like Figure 8-Figure 10The bracket 300 is provided with a support plate 310, a fence 320, an embedding piece 330 and a positioning piece 340. The fence 320 is arranged around a side edge of the support plate 310. The embedding piece 330 and the positioning piece 340 are both integrally connected to a side of the support plate 310. The short side of the magnetic strip 210 abuts against the positioning piece 340, and the long side of the magnetic strip 210 is embedded with the embedding piece 330. An assembly area for a magnetic strip 210 is formed between a positioning piece 340 and two pairs of corresponding embedding pieces 330. The magnetic strip 210 slides into the assembly area from one side, and the two pairs of embedding pieces 330 are symmetrically distributed on opposite sides of the assembly area. The fence 320 is provided with a plurality of notches 321 for the magnetic strip 210 to enter the assembly area. Each notch 321 is arranged opposite to a positioning piece 340. A channel for the magnetic strip 210 to slide into is formed between the notch 321 and the corresponding assembly area. Fig.10 Only one magnetic strip 210 is shown assembled in one assembly area of ​​the bracket 300 . In actual use, multiple magnetic strips 210 are assembled in corresponding assembly areas of the bracket 300 .

[0074] The two opposite sides of the magnetic strip 210 are provided with through slide grooves 211, which are located in the middle of the side, and the slide grooves 211 are slidably connected with the insert 330; the interior of the slide groove 211 is also provided with a fixing hole 212, and the fixing hole 212 is clamped with the insert 330, such as Fig.11 .

[0075] like Fig.12 The embedded component 330 is provided with a main body 331, a first protrusion 332 and a second protrusion 333. The main body 331 is integrally connected to the support plate 310, the first protrusion 332 is integrally connected to the upper part of the main body 331, and the second protrusion 333 is integrally connected to the outer surface of the first protrusion 332. The second protrusion 333 can be slidably embedded in the slide groove 211, and the second protrusion 333 is snap-fitted into the fixing hole 212.

[0076] It should be noted that the first protrusion 332 of the embedded part 330 of this embodiment is embedded in the slide groove 211 of the magnetic strip 210, and when reaching the fixing hole 212, the second protrusion 333 is inserted into the fixing hole 212, thereby fixing the magnetic strip 210 as a whole. The embedded part 330 of this embodiment is an embedded part 330 with a certain elasticity.

[0077] The method of using this embodiment is to push the magnetic stripe 210 into the channel from the notch 321, and then the first protrusion 332 of the insert 330 is embedded in the slide groove 211 of the magnetic stripe 210, and the magnetic stripe 210 continues to be pushed in. When the front end of the magnetic stripe 210 abuts against the positioning member 340, the second protrusion 333 just engages with the fixing hole 212 of the magnetic stripe 210, and the magnetic stripe 210 is fixed by two pairs of inserts 330.

[0078] The magnetic strip 210 of this embodiment can be completely fixed on the surface of the bracket 300 without using glue, screws, etc., which has the advantage of easy installation.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the protection scope of the utility model. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A flat panel speaker, characterized in that: A diaphragm is provided, wherein the diaphragm is provided with a conductive circuit with a serpentine routing, a wire group for increasing the strength of the central area of ​​the diaphragm, and a composite layer, wherein the conductive circuit and the wire group are both attached to the composite layer, the wire group is located between the conductive circuits, and the wire group does not contact the conductive circuits; The conductive circuit is provided with a plurality of straight sections and a plurality of turning sections, one end or both ends of the straight sections are connected to the turning sections, and the straight sections are connected to the turning sections in a staggered manner; The straight line portion and the turning portion are perpendicular to each other, all the straight line portions are parallel to each other, and there is a gap between the straight line portion and the adjacent straight line portion; Two straight line portions located in the same gap are defined as a straight line pair, a turning portion corresponding to one of the straight line portions in the straight line pair is defined as a current turning portion, and an area enclosed by an edge extension line of the current turning portion and the gap is defined as a reinforcement area; The line group is located inside the reinforcement area, and the line group does not protrude from the reinforcement area.

2. The flat panel speaker according to claim 1, characterized in that: The wire group is provided with a plurality of metal wires, and all the metal wires are arranged in parallel.

3. The flat panel speaker according to claim 2, characterized in that: The metal wire is at least one of a straight line and a wavy line.

4. The flat panel speaker according to claim 3, characterized in that: The wire groups are provided in a plurality of groups, each wire group is provided in a reinforcement area, and each wire group has three metal wires; The width of the metal wire is defined as A, and 0.1 mm < A ≤ 2.0 mm exists; The gap between the metal wires is defined as 0.05 mm < A < 0.1 mm.

5. The flat panel speaker according to claim 2, characterized in that: The metal wire is a metal wire engraved by laser from aluminum foil; The conductive circuit is a conductive circuit engraved by laser from aluminum foil.

6. The flat panel speaker according to any one of claims 1 to 5, characterized in that: Two sets of magnetic groups, two brackets and two tuning nets are also provided, each set of magnetic groups is embedded in the side of a bracket, a tuning net, a bracket, a diaphragm, a bracket and a tuning net are stacked and assembled in sequence from front to back, and the two sets of magnetic groups are respectively located on both sides of the diaphragm; Each magnetic group is provided with a plurality of parallel rectangular parallelepiped magnetic strips, and the magnetic strips are embedded in the bracket.

7. The flat panel speaker according to claim 6, characterized in that: The bracket is provided with a support plate, a fence, an embedding piece and a positioning piece, the fence is arranged around a side edge of the support plate, the embedding piece and the positioning piece are both integrally connected to a side of the support plate, the short side of the magnetic strip abuts against the positioning piece, and the long side of the magnetic strip is embedded with the embedding piece; An assembly area for a magnetic strip is formed between one positioning piece and two pairs of corresponding embedding pieces. The magnetic strip slides into the assembly area from one side, and the two pairs of embedding pieces are symmetrically distributed on opposite sides of the assembly area.

8. The flat panel speaker according to claim 7, characterized in that: Two opposite sides of the magnetic strip are provided with through slide grooves, the slide grooves are located in the middle of the sides, and the slide grooves are slidably connected with the embedded parts; A fixing hole is also provided inside the slide groove, and the fixing hole is clamped with the embedding part.

9. The flat panel speaker according to claim 8, characterized in that: The embedded component is provided with a main body, a first protrusion and a second protrusion. The main body is integrally connected to the support plate, the first protrusion is integrally connected to the upper part of the main body, the second protrusion is integrally connected to the outer surface of the first protrusion, the second protrusion can be slidably embedded in the slide groove, and the second protrusion is card-assembled in the fixing hole.

10. The flat panel speaker according to claim 9, characterized in that: The enclosure is provided with a plurality of notches for the magnetic strip to enter the assembly area, and each notch is arranged opposite to a positioning member; A channel is formed between the notch and the corresponding assembly area for the magnetic strip to slide into.

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