Magnetic array planar magnetic horn

Abstract

The utility model discloses a magnetic array planar magnetic horn, and belongs to the technical field of planar magnetic horn structures. Comprising an upper frame, an upper magnetic group, a lower frame, a lower magnetic group and a vibrating diaphragm, the vibrating diaphragm is located between the upper frame and the lower frame, and a coil is arranged in the middle of the vibrating diaphragm; the upper magnetic group is flatly laid on the upper frame, the upper magnetic group comprises a first upper magnet, a second upper magnet, a third upper magnet, a fourth upper magnet, a fifth upper magnet and a sixth upper magnet which are sequentially arranged in turn, and the lower magnetic group is flatly laid on the lower frame. And the lower magnetic group comprises a first lower magnet, a second lower magnet, a third lower magnet, a fourth lower magnet, a fifth lower magnet and a sixth lower magnet which are sequentially arranged in turn. The utility model solves the technical problem of low efficiency of a magnetic field of a traditional plane earphone.

Description

Technical Field

[0001] This utility model relates to the field of planar magnetic speaker structure technology, and in particular to a magnetic array planar magnetic speaker. Background Technology

[0002] Planar magnetic headphones are a type of Hi-Fi headphone. They primarily produce sound by using the magnetic force generated by horizontally opposed magnets with opposite poles to drive a diaphragm containing a coil to vibrate. (The diaphragm with the coil experiences an Ampere force in the magnetic field, causing it to move up and down; the direction of this movement is determined by the left-hand rule. According to Ampere's law, the force on the diaphragm is concentrated at the location where the coil is located, and the force on all locations with coils causes the entire diaphragm to vibrate.) Current research mainly focuses on the arrangement of the magnets. In this research, the magnets primarily provide the magnetic force for the diaphragm's vibration. When the magnets have the same shape and magnetic material, the distance between the two magnets affects the magnitude of the magnetic force on the diaphragm. Since the diaphragm vibrates between two magnets, a certain amplitude space must be reserved. The greater the distance between the magnets, the smaller the magnetic force generated, resulting in lower efficiency.

[0003] Existing planar magnetic headphone magnets consist of two rows of magnets, with the diaphragm positioned in the middle. The upper and lower magnets attract each other (i.e., their magnetic properties are opposite), while the left and right magnets in the same row attract each other. The portion of the diaphragm with the coil is positioned between the upper and lower magnetic poles. When the coil is energized, the Ampere force causes the diaphragm to vibrate, producing sound. 1. Magnet Pole Direction: Existing magnetic pole arrangements have two directions: perpendicular to the diaphragm, one magnet is the N pole, and the opposite magnet is the S pole; horizontally, the magnet adjacent to the N pole is the S pole. In short, the N pole of the magnets in both horizontal and vertical directions can only be vertically upward or downward, and the same applies to the S pole arrangement. The strongest magnetic force is located in the middle of two adjacent magnets. 2. Coil Arrangement: Existing coil arrangements primarily place the coil in the middle of adjacent magnets. With the magnets arranged in both opposite and horizontal directions, the magnetic force at the middle position of the opposite magnets is mainly used as the driving force for the coil. The strongest magnetic force is not at the opposite position of the magnets, but rather in the middle of the horizontally adjacent magnets. The magnetic force is weakest at the exact center of a planar magnetic field. The coil wiring is limited to extending to the left and right of the center of the adjacent magnet, but cannot go beyond the exact center.

[0004] To increase magnetic field strength and efficiency, the main methods currently used are to reduce the spacing between magnets or increase their volume. While these methods can improve efficiency to some extent, the efficiency remains relatively low due to the portability and size constraints of headphones. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems by providing a magnetic array planar magnetic speaker, thus solving the technical problem of low magnetic field efficiency in traditional planar headphones.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A planar magnetic loudspeaker with a magnetic array includes an upper frame, an upper magnetic assembly, a lower frame, a lower magnetic assembly, and a diaphragm. The diaphragm is located between the upper frame and the lower frame, and a coil is disposed in the center of the diaphragm. The upper magnetic assembly is laid flat on the upper frame and includes a first upper magnet, a second upper magnet, a third upper magnet, a fourth upper magnet, a fifth upper magnet, and a sixth upper magnet arranged in sequence. One side of the first upper magnet and one side of the second upper magnet are in contact with each other. The second and third upper magnets are arranged alternately. One side of the fourth upper magnet and one side of the fifth upper magnet are in contact with each other. The fifth and sixth upper magnets are arranged alternately. After magnetization, the N poles of the first, second, third, fourth, fifth, and sixth upper magnets face the following directions in sequence: lower left 45 degrees, upper left 45 degrees, directly above, and upper right 45 degrees. The lower magnetic assembly is laid flat on the lower frame. The lower magnetic assembly includes a first lower magnet, a second lower magnet, a third lower magnet, a fourth lower magnet, a fifth lower magnet, and a sixth lower magnet arranged in sequence. The position of the first lower magnet corresponds to the first upper magnet, the position of the second lower magnet corresponds to the second upper magnet, the position of the third lower magnet corresponds to the third upper magnet, the position of the fourth lower magnet corresponds to the fourth upper magnet, the position of the fifth lower magnet corresponds to the fifth upper magnet, and the position of the sixth lower magnet corresponds to the sixth upper magnet. After magnetization, the N poles of the first, second, third, fourth, fifth, and sixth upper magnets are oriented at 45 degrees to the upper left, 45 degrees to the lower left, directly below, 45 degrees to the lower right, 45 degrees to the upper right, and directly above, respectively.

[0008] Furthermore, it also includes a diaphragm frame, which is disposed between the upper frame and the lower frame, and the diaphragm is disposed on the diaphragm frame.

[0009] Furthermore, the outer periphery of the upper frame, lower frame, and diaphragm frame are all provided with corresponding alignment slots.

[0010] Furthermore, the coil includes several conductive layers arranged alternately, with the ends of two adjacent conductive layers connected end-to-end in sequence; the conductive layers are alternately arranged at the connection points of the first and second lower magnets, and the connection points of the fourth and fifth lower magnets.

[0011] Furthermore, the middle parts of both the upper and lower frames are hollowed out, and the hollowed-out parts are provided with several placement slots. The upper magnetic assembly can be locked into the placement slot of the upper frame, and the lower magnetic assembly can be locked into the placement slot of the lower frame.

[0012] Furthermore, the widths of the first upper magnet, the second upper magnet, the fourth upper magnet, the fifth upper magnet, the first lower magnet, the second lower magnet, the fourth lower magnet, and the fifth lower magnet are all the same, and the widths of the third upper magnet, the sixth upper magnet, the third lower magnet, and the sixth lower magnet are all the same, and the width of the first upper magnet is half that of the third upper magnet.

[0013] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model adopts a method of changing the magnetic pole arrangement of the magnetic assembly, using a six-directional arrangement. Compared with the conventional magnetic field with only two directions, the overall magnetic field is significantly improved, with the strongest magnetic force being 10%-20% stronger than that of a conventional planar magnetic field. The total area of ​​the wiring position is 10%-15% larger than that of a conventional planar magnetic speaker wiring, resulting in a larger and more uniform magnetic force area on the diaphragm, which has a significant effect on improving headphone efficiency and solves the technical problem of low magnetic field efficiency in traditional planar headphones.

[0015] 2. This utility model facilitates the positioning and installation of the diaphragm by providing a diaphragm frame, and facilitates the positioning and installation of the upper frame, lower frame and diaphragm frame by providing alignment slots, thereby improving the ease of installation.

[0016] 3. The diaphragm and coil centerline of this utility model correspond to the connecting surfaces of the first and second lower magnets or the connecting surfaces of the fourth and fifth lower magnets, which can make the coil aligned with the part with high magnetoacoustic intensity, so that the magnetic energy passing through the coil is as large as possible, and further improve the efficiency of the magnetic field. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the upper frame and upper magnet assembly in their installed state.

[0019] Figure 3 This is a three-dimensional structural diagram of the lower frame and lower magnetic assembly of this utility model in their installation state;

[0020] Figure 4 This is a three-dimensional structural diagram of the diaphragm and diaphragm frame of this utility model in the installation state (the upper diaphragm frame is not shown).

[0021] Figure 5 This is a partial simulation diagram of the magnetic flux density of the magnetic circuit of this utility model.

[0022] In the attached diagram, 1-upper frame, 2-upper magnet group, 3-lower frame, 4-lower magnet group, 5-diaphragm, 6-diaphragm frame, 7-alignment slot, 21-first upper magnet, 22-second upper magnet, 23-third upper magnet, 24-fourth upper magnet, 25-fifth upper magnet, 26-sixth upper magnet, 41-first lower magnet, 42-second lower magnet, 43-third lower magnet, 44-fourth lower magnet, 45-fifth lower magnet, 46-sixth lower magnet, 51-coil, 52-conductive layer. Detailed Implementation

[0023] The specific implementation of the utility model will be further described below with reference to the accompanying drawings.

[0024] In the description of this utility model, it should be understood that the terms "center", "length", "width", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] Please see Figures 1 to 5A planar magnetic loudspeaker with a magnetic array includes an upper frame 1, an upper magnetic assembly 2, a lower frame 3, a lower magnetic assembly 4, and a diaphragm 5. The diaphragm 5 is located between the upper frame 1 and the lower frame 3, and a coil 51 is disposed in the middle of the diaphragm 5. The upper magnetic assembly 2 is laid flat on the upper frame 1, and the upper magnetic assembly 2 includes a first upper magnet 21, a second upper magnet 22, a third upper magnet 23, a fourth upper magnet 24, a fifth upper magnet 25, and a sixth upper magnet 26 arranged in sequence. The first upper magnet 21... One side of the first upper magnet 21 is in contact with the side of the second upper magnet 22, and the second upper magnet 22 and the third upper magnet 23 are arranged alternately. One side of the fourth upper magnet 24 is in contact with the side of the fifth upper magnet 25, and the fifth upper magnet 25 and the sixth upper magnet 26 are arranged alternately. After magnetization, the N pole orientations of the first upper magnet 21, the second upper magnet 22, the third upper magnet 23, the fourth upper magnet 24, the fifth upper magnet 25 and the sixth upper magnet 26 are respectively 45 degrees to the lower left, 45 degrees to the upper left, and directly above. The lower magnet group 4 is laid flat on the lower frame 3 at an upper right 45-degree angle, a lower right 45-degree angle, and directly below; the lower magnet group 4 includes a first lower magnet 41, a second lower magnet 42, a third lower magnet 43, a fourth lower magnet 44, a fifth lower magnet 45, and a sixth lower magnet 46 arranged in sequence. The position of the first lower magnet 41 corresponds to the first upper magnet 21, the position of the second lower magnet 42 corresponds to the second upper magnet 22, and the position of the third lower magnet 43 corresponds to the third upper magnet 24. 3. The position of the fourth lower magnet 44 corresponds to the fourth upper magnet 24, the position of the fifth lower magnet 45 corresponds to the fifth upper magnet, and the position of the sixth lower magnet 46 corresponds to the sixth upper magnet 26. After magnetization, the N pole orientations of the first upper magnet 21, second upper magnet 22, third upper magnet 23, fourth upper magnet 24, fifth upper magnet 25, and sixth upper magnet 26 are, respectively, 45 degrees to the upper left, 45 degrees to the lower left, directly below, 45 degrees to the lower right, 45 degrees to the upper right, and directly above. Specifically, the diaphragm 5 is a thin film, and the coil 51 is disposed on the diaphragm 5 using a conductive material spraying, coating, or printing method.

[0028] In this embodiment, a diaphragm frame 6 is also included, which is disposed between the upper frame 1 and the lower frame 3, and the diaphragm 5 is disposed on the diaphragm frame 6. Specifically, there are two diaphragm frames 6, and the diaphragm 5 is clamped between the two diaphragm frames 6. The diaphragm frame 6 facilitates the positioning and installation of the diaphragm 5.

[0029] In this embodiment, the outer periphery of the upper frame 1, lower frame 3, and diaphragm frame 6 are all provided with corresponding alignment slots 7. Specifically, the outer periphery of the upper frame 1, lower frame 3, and diaphragm frame 6 is provided with two slots, which are arranged opposite to each other. By providing alignment slots 7, the upper frame 1, lower frame 3, and diaphragm frame 6 are easily positioned and installed, improving the convenience of installation.

[0030] In this embodiment, the coil 51 includes a plurality of conductive layers 52 arranged alternately, and the ends of two adjacent conductive layers 52 are connected end to end in sequence; the conductive layers 52 are alternately arranged at the connection between the first lower magnet 41 and the second lower magnet 42, and at the connection between the fourth lower magnet 44 and the fifth lower magnet 45.

[0031] In this embodiment, the middle parts of the upper frame 1 and the lower frame 3 are hollowed out, and the hollowed-out parts are provided with several placement slots. The upper magnetic group 2 can be locked into the placement slot of the upper frame 1, and the lower magnetic group 4 can be locked into the placement slot of the lower frame 3.

[0032] In this embodiment, the widths of the first upper magnet 21, the second upper magnet 22, the fourth upper magnet 24, the fifth upper magnet 25, the first lower magnet 41, the second lower magnet 42, the fourth lower magnet 44, and the fifth lower magnet 45 are all the same, and the widths of the third upper magnet 23, the sixth upper magnet 26, the third lower magnet 43, and the sixth lower magnet 46 are all the same, and the width of the first upper magnet 21 is half that of the third upper magnet 23.

[0033] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A magnetic array planar magnetic loudspeaker, characterized in that: The system includes an upper frame, an upper magnetic assembly, a lower frame, a lower magnetic assembly, and a diaphragm. The diaphragm is located between the upper and lower frames, and a coil is disposed in the center of the diaphragm. The upper magnetic assembly is laid flat on the upper frame and includes a first upper magnet, a second upper magnet, a third upper magnet, a fourth upper magnet, a fifth upper magnet, and a sixth upper magnet arranged in sequence. One side of the first upper magnet and one side of the second upper magnet are in contact with each other. The second and third upper magnets are arranged alternately. One side of the fourth upper magnet and one side of the fifth upper magnet are in contact with each other. The fifth and sixth upper magnets are arranged alternately. After magnetization, the N poles of the first, second, third, fourth, fifth, and sixth upper magnets are oriented at 45 degrees to the lower left, 45 degrees to the upper left, directly above, 45 degrees to the upper right, and 45 degrees to the lower right, respectively. And directly below; the lower magnetic group is laid flat on the lower frame, and the lower magnetic group includes a first lower magnet, a second lower magnet, a third lower magnet, a fourth lower magnet, a fifth lower magnet, and a sixth lower magnet arranged in sequence. The position of the first lower magnet corresponds to the first upper magnet, the position of the second lower magnet corresponds to the second upper magnet, the position of the third lower magnet corresponds to the third upper magnet, the position of the fourth lower magnet corresponds to the fourth upper magnet, the position of the fifth lower magnet corresponds to the fifth upper magnet, and the position of the sixth lower magnet corresponds to the sixth upper magnet. After magnetization, the N pole orientations of the first upper magnet, the second upper magnet, the third upper magnet, the fourth upper magnet, the fifth upper magnet, and the sixth upper magnet are respectively 45 degrees to the upper left, 45 degrees to the lower left, directly below, 45 degrees to the lower right, 45 degrees to the upper right, and directly above.

2. The magnetic array planar magnetic loudspeaker according to claim 1, characterized in that: It also includes a diaphragm frame, which is disposed between the upper frame and the lower frame, and the diaphragm is disposed on the diaphragm frame.

3. A magnetic array planar magnetic loudspeaker according to claim 1, characterized in that: The outer periphery of the upper frame, lower frame, and diaphragm frame are all provided with corresponding alignment slots.

4. A magnetic array planar magnetic loudspeaker according to claim 1, characterized in that: The coil includes several conductive layers arranged alternately, with the ends of two adjacent conductive layers connected end-to-end in sequence; the conductive layers are alternately arranged at the connection points of the first and second lower magnets, and the connection points of the fourth and fifth lower magnets.

5. A magnetic array planar magnetic loudspeaker according to claim 1, characterized in that: The upper and lower frames are both hollowed out in the middle, and the hollowed-out parts are provided with several placement slots. The upper magnetic assembly can be locked into the placement slot of the upper frame, and the lower magnetic assembly can be locked into the placement slot of the lower frame.

6. A magnetic array planar magnetic loudspeaker according to claim 1, characterized in that: The widths of the first upper magnet, the second upper magnet, the fourth upper magnet, the fifth upper magnet, the first lower magnet, the second lower magnet, the fourth lower magnet, and the fifth lower magnet are all the same. The widths of the third upper magnet, the sixth upper magnet, the third lower magnet, and the sixth lower magnet are all the same, and the width of the first upper magnet is half that of the third upper magnet.

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