Adjustable plane horn unit

Abstract

The utility model discloses an adjustable planar loudspeaker unit, which relates to the field of loudspeakers, and is characterized in that two diaphragm brackets are arranged at the edge position inside a front cavity, and a diaphragm is clamped between the two diaphragm brackets; the circuit is of an annular structure and is arranged on the diaphragm, one end of the circuit is located in the center of the diaphragm, the other end of the circuit is located on the outer ring of the diaphragm, and the two end points are connected through a wire; and the rear cavity is designed to be matched with the front cavity and is movably embedded into the front cavity, and a magnet is arranged at the edge position of the rear cavity. According to the utility model, a single circular ring magnet or two circular ring magnets are adopted to replace the conventional arrangement of a plurality of strip magnets, so that the use quantity of the magnets is greatly reduced, and the cost is reduced. According to the utility model, the circuit on the diaphragm adopts the circular ring design, the area of the circuit in the diaphragm is greatly increased, and the two end points of the circuit are respectively arranged at the central position and the edge position, so that the used area is further reduced, and favorable conditions are provided for the arrangement of the circular ring coil.

Description

Technical Field

[0001] The utility model relates to the field of loudspeakers, and particularly relates to an adjustable planar loudspeaker unit. Background Art

[0002] Compared with electrostatic loudspeakers and moving coil loudspeakers, planar diaphragm loudspeakers are better, with a larger vibration area and better sound quality. The planar diaphragm combines the advantages of two transducer methods, moving coil and electrostatic. It has better performance in the low frequency compared with electrostatic type, and is also stronger than moving coil type in the high frequency.

[0003] The existing patent number is: CN 212992601 U, which discloses a planar diaphragm loudspeaker, including a circuit board, a conductor, a first magnet assembly, a planar diaphragm assembly and a second magnet assembly. The planar diaphragm assembly is located between the first magnet assembly and the second magnet assembly and is fixed by adjusting screws; an installation groove for installing and fixing the circuit board is arranged on the surface of the first bracket, and a first guide hole for placing the conductor is arranged in the installation groove. The conductor is in contact connection with the planar diaphragm assembly and the circuit board respectively. Using spring conductors to be in contact connection with the planar diaphragm assembly and the circuit board respectively improves the production and assembly efficiency, is more convenient for maintenance, and improves the low-frequency balance.

[0004] The existing patent number is: CN 217985387 U, which discloses a loudspeaker and an electronic device. The loudspeaker includes a magnetic assembly, a diaphragm and a voice coil. The magnetic assembly is arranged at an interval from the diaphragm, the voice coil is connected to the diaphragm, the magnetic assembly includes a first magnetic member and a second magnetic member, a first lead groove is arranged on the first magnetic member, and the connection head of the voice coil passes through the first lead groove and extends to the outside of the first magnetic member, so that the voice coil can be powered on by a power supply device located in the area outside the first magnetic member, without adding an opening gasket ring for the voice coil to lead out wires, which saves more space and does not affect the sound output effect.

[0005] However, the above existing patents still have the following problems in actual use:

[0006] 1. In the magnetic circuit part, multiple strip magnets are usually arranged in an N / S pole cross arrangement. The number of magnets is too large, resulting in high costs;

[0007] 2. Using a round-trip mode, due to the layout problem, the area of the entire circuit occupies a relatively low proportion of the diaphragm area;

[0008] 3. The diaphragm is made with a circuit on an extremely thin metal-coated film, and both ends of the circuit are arranged at the edge, further reducing the usable area;

[0009] 4. The existing magnet parts are all pre-installed. Due to tolerance problems, the consistency of the planar loudspeaker unit is not high and cannot be adjusted. Summary of the Utility Model

[0010] In order to overcome the above-mentioned defects of the prior art, the present utility model provides an adjustable planar horn unit to solve the problems existing in the above-mentioned background technology.

[0011] The present utility model provides the following technical solutions: An adjustable planar horn unit, comprising:

[0012] A front cavity, in which two diaphragm brackets are arranged at the edge positions inside, and a diaphragm is clamped between the two diaphragm brackets;

[0013] A circuit, which is arranged on the diaphragm in a circular ring shape structure, one end of which is located at the center of the diaphragm, and the other end is located at the outer circle of the diaphragm, and the two end points are connected by a wire;

[0014] A rear cavity, which is designed to be matched with the front cavity and is movably embedded inside the front cavity. According to the depth of the rear cavity embedded inside the front cavity, the size of the rear cavity is adjusted. A magnet is arranged at the edge position of the rear cavity.

[0015] Preferably, a shell cover is installed in a matching manner on the top of the front cavity.

[0016] Preferably, dust-proof mesh covers are arranged on both the magnet and the bottom of the rear cavity.

[0017] Preferably, the number of the magnets is two, and the two magnets are respectively installed inside the front cavity through two brackets and clamp the diaphragm between them.

[0018] Preferably, both the front cavity and the rear cavity are of an annular stepped structure, and the size gradually decreases from top to bottom.

[0019] Preferably, the circuit is made by etching and photolithography of a printed metal layer on the diaphragm.

[0020] Preferably, the circuit is a wound coil pasted on the diaphragm.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0022] 1. The present utility model uses a single circular magnet or two circular magnets to replace the existing arrangement of multiple strip magnets, greatly reducing the number of magnets used, thereby reducing costs.

[0023] 2. The circuit on the diaphragm of the present utility model adopts a circular ring design, greatly increasing the area of the circuit occupying the diaphragm, and the two end points of the circuit are respectively arranged at the center and the edge positions, further reducing the area used, thereby providing favorable conditions for the arrangement of the circular ring coil.

[0024] 3. The present utility model adopts a split front cavity and rear cavity structure, and installs a magnet in the rear cavity for pre-fixing. After assembly, the position of the magnet can be adjusted by changing the installation depth of the rear cavity and the front cavity, so as to realize the adjustment of the magnetic field, and then maintain the consistency of the product, thereby adjusting the sound pressure level of the speaker.

[0025] 4. The front cavity and the rear cavity of the present utility model are movably installed, and the size of the rear cavity is adjusted according to the depth of the rear cavity embedded inside the front cavity, so as to optimize the acoustic characteristics and maintain the efficiency of consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an exploded structural schematic diagram of the present utility model.

[0027] Figure 2 It is a sectional structural schematic diagram of the present utility model.

[0028] Figure 3 It is a schematic diagram of the installation structure of two magnets of the present utility model.

[0029] The reference numerals are: 1, front cavity; 2, rear cavity; 3, diaphragm bracket; 4, diaphragm; 5, circuit; 6, wire; 7, magnet; 8, shell cover; 9, dust-proof net cover; 10, bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following elaborates on the preferred embodiments of the present utility model in conjunction with the drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0031] The present utility model provides an adjustable planar speaker unit, as Figure 1-2 shown, including:

[0032] A front cavity 1, where two diaphragm brackets 3 are arranged at the edge positions inside it, and a diaphragm 4 is clamped between the two diaphragm brackets 3;

[0033] A circuit 5, which is arranged on the diaphragm 4 in a circular ring shape structure. One end is located at the center of the diaphragm 4, and the other end is located at the outer circle of the diaphragm 4, and the two endpoints are connected by a wire 6. The circuit 5 can be made by using processes such as printing a metal layer on the diaphragm 4 and etching and lithographing the metal layer on the metal film composite film, or directly using a wound coil adhered to the diaphragm 4;

[0034] A rear cavity 2, which is designed to be matched with the front cavity 1 and is movably embedded inside the front cavity 1. The size of the rear cavity 2 is adjusted according to the depth of the rear cavity 2 embedded inside the front cavity 1, so as to optimize the acoustic characteristics and maintain the efficiency of consistency. A magnet 7 is arranged at the edge position of the rear cavity 2.

[0035] AsFigure 1 , 3 As shown, a shell cover 8 is installed in a supporting manner at the top of the front cavity 1.

[0036] As Figure 2 shown, dust-proof mesh covers 9 are provided at the bottom of both the magnet 7 and the rear cavity 2.

[0037] As Figure 3 shown, the number of the magnets 7 can be two. The two magnets 7 are respectively installed inside the front cavity 1 through two brackets 10, and the diaphragm 4 is clamped therebetween, so as to increase the magnetic field intensity and improve the output power.

[0038] As Figure 1 shown, both the front cavity 1 and the rear cavity 2 are of an annular stepped structure, and the sizes gradually decrease from top to bottom.

[0039] It should be noted that: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which can be a mechanical connection or an electrical connection, or the communication inside two components, and can be directly connected. The "upper", "lower", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object to be described changes, the relative position relationship may change;

[0040] The above is only the preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above embodiment. Any equivalent modification or change made by those of ordinary skill in the art according to the disclosure of the present utility model should be included in the protection scope recorded in the claims.

Claims

1. An adjustable planar horn unit, characterized in that, Comprising: A front cavity (1), at the edge position inside which there are two diaphragm supports (3), and a diaphragm (4) is clamped between the two diaphragm supports (3); A circuit (5), which is arranged on the diaphragm (4) in a circular ring-shaped structure, one end of which is located at the center of the diaphragm (4), the other end is located at the outer ring of the diaphragm (4), and the two endpoints are connected by a wire (6); A rear cavity (2), which is designed to be matched with the front cavity (1) and is movably embedded inside the front cavity (1). The size of the rear cavity (2) is adjusted according to the depth of the rear cavity (2) embedded inside the front cavity (1). A magnet (7) is arranged at the edge position of the rear cavity (2).

2. The adjustable planar horn unit according to claim 1, wherein: A shell cover (8) is installed in a matching manner on the top of the front cavity (1).

3. An adjustable planar horn unit according to claim 1, characterized in that: Dust-proof mesh covers (9) are arranged on both the magnet (7) and the bottom of the rear cavity (2).

4. An adjustable planar horn unit according to claim 1, characterized in that: The number of the magnets (7) is two. The two magnets (7) are respectively installed inside the front cavity (1) through two supports, and the diaphragm (4) is clamped between them.

5. An adjustable planar horn unit according to claim 1, wherein: Both the front cavity (1) and the rear cavity (2) are of an annular stepped structure, and their sizes gradually decrease from top to bottom.

6. The adjustable planar horn unit according to claim 1, characterized in that: The circuit (5) is made by printing a metal layer on the diaphragm (4) and then etching and lithography.

7. An adjustable planar horn unit according to claim 1, characterized in that: The circuit (5) is made by winding a coil and pasting it on the diaphragm (4).

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