Square plane horn easy to assemble

Abstract

The utility model discloses a square plane horn easy to assemble, and belongs to the technical field of plane horns. A square plane horn easy to assemble comprises an upper shell and a lower shell, the upper shell and the lower shell are buckled up and down, a boss is arranged on the inner wall of the upper shell, a diaphragm is connected to the boss, one side, close to the lower shell, of the diaphragm is connected with a voice coil, an inner magnet and an outer magnet are arranged in the lower shell, and one end of the upper shell and one end of the lower shell are jointly connected with a PCB. According to the square plane horn easy to assemble, the upper shell and the lower shell are hardware manufactured through a precision stamping die, the dimensional tolerance can reach 0.01 mm, the upper shell 1 is provided with the boss, the diaphragm is fixed through the boss, the space between the upper shell and the lower shell is separated by the diaphragm, the voice coil is fixed on the diaphragm, and the size tolerance can reach 0.01 mm. The distance between the voice coil and the inner and outer magnets is not limited by the tolerance of the inner and outer magnets, and the product consistency is better.

Description

Technical Field

[0001] The utility model relates to the technical field of plane speakers, and more specifically to a square plane speaker which can be easily assembled. Background Art

[0002] Traditional planar speakers have a magnetic circuit placed underneath, and after the diaphragm and voice coil are bonded, the diaphragm is placed on top of the magnet, which is equivalent to the diaphragm being positioned by the magnet. The upper and lower positions of the diaphragm, as well as its flatness, are all determined by the magnet. However, the general processing tolerance and flatness of magnets are relatively poor, at more than 0.03mm. The voice coil has a magnetic gap of only 0.1mm from the magnet, so the 0.03mm offset has a great impact on the consistency and reliability of the product. In addition, the magnetic circuit is composed of inner and outer magnets. If the height of the inner and outer magnets also has a tolerance, if both the inner and outer magnets have an extreme tolerance, then the height difference is at least 0.06mm, and the diaphragm is positioned by the external magnet, so this height difference has a great impact on the gap between the voice coil and the magnet, and the product consistency is difficult to guarantee. Utility Model Content

[0003] The utility model aims to overcome the deficiencies in the prior art and provides a square plane speaker that is easy to assemble to solve the above deficiencies.

[0004] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is:

[0005] A square plane speaker that is easily assembled comprises an upper shell and a lower shell, wherein the upper shell and the lower shell are buckled together, a boss is arranged on the inner wall of the upper shell, a diaphragm is connected to the boss, a voice coil is connected to the side of the diaphragm close to the lower shell, inner and outer magnets are arranged in the lower shell, a PCB circuit board is connected to one end of the upper shell and the lower shell, the PCB circuit board is connected to the voice coil, and the voice coil is a ring-shaped flat structure.

[0006] Preferably, the diaphragm divides the internal space of the upper shell and the lower shell into a front cavity and a rear cavity, and a sound outlet hole is provided at one end of the upper shell close to the front cavity.

[0007] Preferably, a sound mouthpiece is connected to the sound outlet hole.

[0008] Preferably, a groove is provided at one end of the upper shell body close to the rear cavity, and the wire of the voice coil passes through the groove and is connected to the PCB circuit board.

[0009] Preferably, no less than four bosses are provided on the upper shell, and the surface of the bosses is a planar structure with a width of not less than 0.2 mm.

[0010] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0011] The upper shell and the lower shell of the utility model are both hardware made of precision stamping dies, and the dimensional tolerance can be as high as 0.01mm. A boss is provided on the upper shell 1, and the diaphragm is fixed by the boss. The diaphragm separates the space between the upper shell and the lower shell, and the sound of the front cavity is output through the sound outlet hole. The voice coil is fixed on the diaphragm, and the distance between the voice coil and the inner and outer magnets is not limited by the tolerance of the inner and outer magnets, and the product consistency is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the overall structure diagram of the simple-to-assemble square flat speaker of the utility model;

[0013] Figure 2 This is an exploded view of the simple-to-assemble square flat speaker of the utility model;

[0014] Figure 3 It is a cross-sectional view of a square plane speaker that is easy to assemble according to the utility model;

[0015] Figure 4 This is a structural diagram of the upper shell of the utility model.

[0016] In the figure: 1. upper shell; 11. boss; 12. groove; 13. sound hole; 2. lower shell; 3. diaphragm; 4. voice coil; 5. inner and outer magnets; 6. PCB circuit board; 7. sound mouthpiece. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0019] Combination Figure 1-Figure 4 In this embodiment, the easily assembled square plane speaker includes an upper shell 1 and a lower shell 2, which are buckled together, and the length and width of the upper shell 1 and the lower shell 2 are consistent. Laser welding is performed at the joint of the upper shell 1 and the lower shell 2, and then sealant is applied for sealing, which has better firmness and is convenient for automated assembly. A boss 11 is provided on the inner wall of the upper shell 1, and a diaphragm 3 is connected to the boss 11. No less than four bosses 11 are provided on the upper shell 1, and the surface of the boss 11 is a planar structure with a width of not less than 0.2 mm, which is convenient for placing the diaphragm 3, and the boss 11 supports the diaphragm 3.

[0020] In this embodiment, the diaphragm 3 is a flat surface or a structure with a folded ring. The voice coil 4 is connected to the side of the diaphragm 3 close to the lower shell 2. After the diaphragm 3 and the voice coil 4 are bonded, the diaphragm 3 is placed on the boss 11 of the upper shell 1 and fixed. The method can be glue or laser welding. The upper shell 1 is a hardware part made of a precision stamping mold, and the dimensional tolerance can be 0.01mm. The diaphragm 3 is fixed by the boss 11. The distance between the voice coil 4 and the inner and outer magnets 5 will not be limited by the tolerance of the inner and outer magnets 5, and the product consistency is better.

[0021] In this embodiment, a groove 12 is provided at one end of the upper shell 1 close to the rear cavity, and the groove 12 is used as a wire outlet hole of the voice coil 4 . The wire of the voice coil 4 passes through the groove 12 and is connected to the PCB circuit board 6 .

[0022] In this embodiment, inner and outer magnets 5 are arranged in the lower shell 2, and a PCB circuit board 6 is commonly connected to one end of the upper shell 1 and the lower shell 2. The PCB circuit board 6 is connected to the voice coil 4, and the voice coil 4 is a ring-shaped flat structure.

[0023] In this embodiment, the diaphragm 3 divides the internal space of the upper shell 1 and the lower shell 2 into a front cavity and a rear cavity. The boss 11 is located at a certain distance from the top of the upper shell 1, which serves as the front cavity of the diaphragm 3. A sound outlet 13 is provided at one end of the upper shell 1 near the front cavity, and the sound outlet 13 is used to emit sound. A sound mouth 7 is connected to the sound outlet 13.

[0024] Working process: After one side of the diaphragm 3 is bonded to the voice coil 4, the diaphragm 3 is placed on the boss 11 of the upper shell 1, and the diaphragm 3 is fixed to the boss 11 using glue or laser welding. The wire of the voice coil 4 passes through the groove 12, and the inner and outer magnets 5 are installed in the lower shell 2. The upper shell 1 and the lower shell 2 are buckled up and down, and laser welding is performed at the joint of the upper shell 1 and the lower shell 2, and then sealant is applied for sealing. The wire of the voice coil 4 is connected to the PCB circuit board 6, and the PCB circuit board 6 is fixed to one end of the upper shell 1 and the lower shell 2, and the sound mouth 7 is installed at the other end of the upper shell 1 and the lower shell 2. The sound mouth 7 covers the sound outlet 13, and the assembly is completed.

[0025] In summary: the utility model is a square flat speaker which is easy to assemble, the upper shell 1 and the lower shell 2 are hardware made of precision stamping molds, the size tolerance can be 0.01mm, a boss 11 is provided on the upper shell 1, the diaphragm 3 is fixed by the boss 11, the diaphragm 3 separates the space between the upper shell 1 and the lower shell 2, the sound of the front cavity is discharged through the sound outlet 13, the voice coil 4 is fixed on the diaphragm 3, the distance between the voice coil 4 and the inner and outer magnets 5 will not be limited by the tolerance of the inner and outer magnets 5, and the product consistency is better.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A square flat speaker that can be easily assembled, comprising an upper shell (1) and a lower shell (2), characterized in that: The upper shell (1) and the lower shell (2) are buckled together, a boss (11) is arranged on the inner wall of the upper shell (1), a diaphragm (3) is connected to the boss (11), a voice coil (4) is connected to the side of the diaphragm (3) close to the lower shell (2), inner and outer magnets (5) are arranged in the lower shell (2), one end of the upper shell (1) and the lower shell (2) are commonly connected to a PCB circuit board (6), and the PCB circuit board (6) is connected to the voice coil (4).

2. The easy-to-assemble square flat speaker according to claim 1, characterized in that: The diaphragm (3) divides the internal space of the upper shell (1) and the lower shell (2) into a front cavity and a rear cavity, and a sound outlet hole (13) is provided at one end of the upper shell (1) close to the front cavity.

3. The easy-to-assemble square flat speaker according to claim 2, characterized in that: The sound outlet hole (13) is connected to a sound mouthpiece (7).

4. The easy-to-assemble square flat speaker according to claim 2, characterized in that: A groove (12) is provided at one end of the upper shell (1) close to the rear cavity, and a wire of the voice coil (4) passes through the groove (12) and is connected to the PCB circuit board (6).

5. The easy-to-assemble square flat speaker according to claim 1, characterized in that: The upper shell (1) is provided with no less than four bosses (11), and the surface of the bosses (11) is a planar structure with a width of no less than 0.2 mm.

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