A flat speaker with FPC pads

Abstract

This utility model relates to the field of planar loudspeaker technology, specifically to a planar loudspeaker with FPC pads. It employs a bracket, FPC pads, an outer magnet ring, and an inner magnet located within the outer magnet ring. The bracket has an opening on its side. The FPC pad includes an adhesive portion housed within the bracket, a pad portion connected to the side of the adhesive portion and protruding from the opening, and a solder joint connected to the top of the pad portion for soldering a voice coil wire. The end of the pad portion has a solder groove for connecting external signal lines. During assembly, the solder joint of the FPC pad is used to solder the voice coil wire, and the solder groove of the FPC pad is used to connect the external signal line. One side of the adhesive portion is bonded to the bracket, and both the outer magnet ring and the inner magnet are bonded to the other side of the adhesive portion. This design increases the bonding area of ​​the FPC pad, improves the stability of the FPC pad connection, prevents the FPC pad from loosening and falling off, and prevents the voice coil wire from easily separating from the FPC pad, which could lead to the loudspeaker being silent.

Description

Technical Field

[0001] This utility model relates to the field of planar speaker technology, specifically to a planar speaker with FPC pads. Background Technology

[0002] A planar loudspeaker is a type of loudspeaker that breaks away from the traditional cone-shaped loudspeaker design. Its core principle is to generate sound by driving a planar material to produce wave-like vibrations, or to use phased array technology to control the phase of sound waves to form directional propagating planar waves.

[0003] Existing planar loudspeakers include a bracket, outer magnet ring, inner magnet, FPC pads, diaphragm, voice coil, etc. The FPC pads are electrically connected to the voice coil by spot welding the voice coil wire. Typically, the FPC pads are glued to the side of the outer magnet ring. However, due to the small bonding area between the outer magnet ring and the FPC pads, the FPC pads are prone to loosening and falling off during use. In severe cases, the voice coil wire separates from the FPC pads, resulting in no sound from the loudspeaker. Summary of the Invention

[0004] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a planar speaker with FPC pads.

[0005] The objective of this utility model is achieved through the following technical solution: a planar speaker with FPC pads, comprising a bracket, FPC pads attached to the bracket, an outer magnet ring attached to the top of the FPC pads, and an inner magnet attached to the top of the FPC pads and located in the outer magnet ring. The bracket has an opening on its side. The FPC pads include an adhesive portion accommodated in the bracket, a pad portion connected to the side of the adhesive portion and protruding from the opening, and a solder joint connected to the top of the pad portion for soldering voice coil wires. The end of the pad portion has a solder groove for connecting external signal lines. One side of the adhesive portion is bonded to the bracket, and the outer magnet ring and the inner magnet are both bonded to the other side of the adhesive portion.

[0006] Preferably, the planar speaker further includes a diaphragm attached to the top outer periphery of the outer magnet ring, and a flat voice coil fixedly connected to the bottom of the diaphragm and located above the outer magnet ring and above the inner magnet, wherein a cavity is formed between the diaphragm and the outer magnet ring.

[0007] Preferably, the outer magnet ring has a cross-section on the side near the solder joint, and the cross-section forms a notch in the cavity between itself and the diaphragm, the notch being used to pass through the voice coil wire.

[0008] Preferably, the planar loudspeaker further includes a protective cover covering the top of the diaphragm, with a sound cavity between the protective cover and the diaphragm, a tuning hole communicating with the sound cavity being opened in the middle of the protective cover, and a tuning mesh being attached to the tuning hole of the protective cover.

[0009] Preferably, the planar speaker further includes a molding protective adhesive bonded to the bracket, FPC pads, solder joints, outer magnet ring, diaphragm, and protective cover.

[0010] Preferably, the bottom of the opening of the bracket extends with a support plate that fits against the pad portion.

[0011] The beneficial effects of this utility model are as follows: The planar speaker with FPC pads of this utility model adopts a bracket, an FPC pad attached to the bracket, an outer magnet ring attached to the top of the FPC pad, and an inner magnet attached to the top of the FPC pad and located in the outer magnet ring. The bracket has an opening on its side. The FPC pad includes an adhesive part housed in the bracket, a pad part connected to the side of the adhesive part and protruding from the opening, and a solder joint connected to the top of the pad part for soldering voice coil wires. The end of the pad part has a solder groove for connecting external signal lines. During assembly, the solder joint of the FPC pad is used to solder the voice coil wires, and the solder groove of the FPC pad is used to connect external signal lines. One side of the adhesive part is bonded to the bracket, and the outer magnet ring and the inner magnet are both bonded to the other side of the adhesive part. This helps to increase the bonding area of ​​the FPC pad, improve the connection stability of the FPC pad, prevent the FPC pad from loosening and falling off, and prevent the voice coil wire from easily separating from the FPC pad, which would cause the speaker to have no sound. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is an exploded view of the present invention;

[0014] Figure 3 This is a partial structural schematic diagram of the present invention;

[0015] Figure 4 This is a cross-sectional view of the present invention.

[0016] The attached figures are labeled as follows: 1. Support; 2. FPC pad; 21. Adhesive part; 22. Pad part; 23. Solder point; 3. Outer magnet ring; 4. Inner magnet; 5. Opening; 6. Solder groove; 7. Diaphragm; 8. Flat voice coil; 9. Cavity; 10. Cross-section; 11. Notch; 12. Protective cover; 13. Sound cavity; 14. Tuning hole; 15. Tuning mesh; 16. Molding protective adhesive; 17. Support plate. Detailed Implementation

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0018] like Figure 1-4As shown, a planar speaker with an FPC pad 2 includes a bracket 1, an FPC pad 2 attached to the bracket 1, an outer magnet ring 3 attached to the top of the FPC pad 2, and an inner magnet 4 attached to the top of the FPC pad 2 and located in the outer magnet ring 3. An opening 5 is provided on the side of the bracket 1. The FPC pad 2 includes an adhesive portion 21 accommodated in the bracket 1, a pad portion 22 connected to the side of the adhesive portion 21 and protruding from the opening 5, and a solder joint 23 connected to the top of the pad portion 22 for soldering a voice coil wire. A solder groove 6 for connecting an external signal line is provided at the end of the pad portion 22. One side of the adhesive portion 21 is bonded to the bracket 1, and the outer magnet ring 3 and the inner magnet 4 are both bonded to the other side of the adhesive portion 21.

[0019] During assembly, the voice coil wire is soldered to the solder point 23 of the FPC solder pad 2, the external signal wire is connected to the solder groove 6 of the FPC solder pad 2, one side of the adhesive part 21 is bonded to the bracket 1, and the outer magnet ring 3 and the inner magnet 4 are both bonded to the other side of the adhesive part 21. This helps to increase the bonding area of ​​the FPC solder pad 2, improve the connection stability of the FPC solder pad 2, prevent the FPC solder pad 2 from loosening and falling off, and prevent the voice coil wire from easily separating from the FPC solder pad 2, which would cause the speaker to have no sound.

[0020] Furthermore, the planar speaker also includes a diaphragm 7 attached to the top outer periphery of the outer magnet ring 3, and a flat voice coil 8 fixedly connected to the bottom of the diaphragm 7 and located above the outer magnet ring 3 and above the inner magnet 4. A cavity 9 is provided between the diaphragm 7 and the outer magnet ring 3 to provide sufficient space for the flat voice coil 8.

[0021] Furthermore, the outer magnet ring 3 has a cross-section 10 on the side near the solder joint 23, and a notch 11 is formed between the cross-section 10 and the diaphragm 7 to connect the cavity 9. The notch 11 is used to pass through the voice coil wire. This ensures that one end of the voice coil wire can be soldered to the solder joint 23, and the other end of the voice coil wire extends into the cavity 9 and is electrically connected to the flat voice coil 8.

[0022] Furthermore, the planar speaker also includes a protective cover 12 covering the top of the diaphragm 7, with a sound cavity 13 between the protective cover 12 and the diaphragm 7, and a tuning hole 14 communicating with the sound cavity 13 is opened in the middle of the protective cover 12, and a tuning mesh 15 is attached to the tuning hole 14 of the protective cover 12.

[0023] Furthermore, the planar speaker also includes a molding protective adhesive 16 bonded to the bracket 1, FPC pads 2, solder joints 23, outer magnet ring 3, diaphragm 7, and protective cover 12. This adhesive helps protect the solder joints 23 and further improves the connection stability of the bracket 1, FPC pads 2, solder joints 23, outer magnet ring 3, diaphragm 7, and protective cover 12. Even further, the molding protective adhesive 16 is applied to the solder joints 23 and then cured.

[0024] Furthermore, the bottom of the opening 5 of the bracket 1 extends to a support plate 17 that fits against the solder pad portion 22.

[0025] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this utility model are within the protection scope of this utility model.

Claims

1. A flat speaker with FPC pads, characterized by: The device includes a bracket, an FPC pad attached to the bracket, an outer magnet ring attached to the top of the FPC pad, and an inner magnet attached to the top of the FPC pad and located within the outer magnet ring. The bracket has an opening on its side. The FPC pad includes an adhesive portion accommodated in the bracket, a pad portion connected to the side of the adhesive portion and protruding from the opening, and a solder joint connected to the top of the pad portion for soldering voice coil wires. The end of the pad portion has a solder groove for connecting external signal lines. One side of the adhesive portion is bonded to the bracket, and the outer magnet ring and the inner magnet are both bonded to the other side of the adhesive portion.

2. The flat panel loudspeaker with FPC pads according to claim 1, wherein: The planar loudspeaker also includes a diaphragm attached to the top outer periphery of the outer magnet ring, and a flat voice coil fixedly connected to the bottom of the diaphragm and located above the outer magnet ring and above the inner magnet, with a cavity between the diaphragm and the outer magnet ring.

3. The flat panel loudspeaker with FPC pads of claim 2, wherein: The outer magnet ring has a cross-section on the side near the solder joint, and a notch is formed between the cross-section and the diaphragm to form a communicating cavity. The notch is used to pass through the voice coil wire.

4. The flat panel loudspeaker with FPC pads of claim 2, wherein: The planar loudspeaker also includes a protective cover on top of the diaphragm, with a sound cavity between the protective cover and the diaphragm, and a tuning hole communicating with the sound cavity is opened in the middle of the protective cover, with a tuning mesh attached to the tuning hole of the protective cover.

5. The flat panel loudspeaker with FPC pads of claim 4, wherein: The planar speaker also includes a molding protective adhesive bonded to the bracket, FPC pads, solder joints, outer magnet ring, diaphragm, and protective cover.

6. The flat panel loudspeaker with FPC pads of claim 1, wherein: The bottom of the opening of the bracket extends with a support plate that fits against the solder pad portion.

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