Differential driving type loudspeaker with inner and outer sets of magnetic circuits and sound equipment

Abstract

The utility model discloses a differential driving type loudspeaker with inner and outer sets of magnetic circuits and a sound box. Wherein the differential driving type loudspeaker with the inner and outer sets of magnetic circuits comprises an inner side upper washer, an inner side upper magnet arranged below the inner side upper washer, an inner side magnetic conductive column arranged below the inner side upper magnet, an inner side lower magnet arranged below the inner side magnetic conductive column, and an inner side lower washer arranged below the inner side lower magnet; the voice coil is sleeved on the outer end surfaces of the inner side upper washer and the inner side lower washer; the magnetic flux ring is sleeved on the outer end surface of the voice coil; the outer side upper washer is sleeved on the outer side of the upper part of the voice coil; the outer side upper magnet is arranged below the outer side upper washer; the outer side lower magnet is arranged below the outer side magnetic conductive column; and the outer side lower washer is arranged below the outer side lower magnet. The magnetic field sensor has the beneficial effects of light weight, low energy consumption, high magnetic field intensity and high sensitivity.

Description

A differential drive speaker and audio system with two sets of magnetic circuits (internal and external) Technical Field

[0001] This utility model relates to the field of electrical technology, specifically to a differential drive speaker and audio system with two sets of magnetic circuits (inner and outer). Background Technology

[0002] The development of audio equipment demands smaller size and higher sound quality. Smaller size means better low frequencies. When speakers are of similar size and weight, they need to handle more power and achieve higher sensitivity. To achieve this, we need to adjust the magnetic return structure and increase the power, which leads to the development of differential drive speakers.

[0003] Therefore, there is an urgent need to develop a differential drive speaker with two sets of magnetic circuits, which is lightweight, low in energy consumption, has a high magnetic field strength, and high sensitivity. Summary of the Invention

[0004] This utility model aims to solve at least one of the above-mentioned technical problems to a certain extent.

[0005] Therefore, the first objective of this utility model is to propose a differential drive horn with two sets of magnetic circuits, which is lightweight, has low energy consumption, high magnetic field strength, and high sensitivity.

[0006] The second objective of this utility model is to provide an audio device.

[0007] To achieve the above objectives, a first aspect of this utility model discloses a differential drive loudspeaker with two sets of magnetic circuits, including: an inner upper washer 1, an inner upper magnet 2 disposed below the inner upper washer 1, an inner magnetic guide post 3 disposed below the inner upper magnet 2, an inner lower magnet 4 disposed below the inner magnetic guide post 3, an inner lower washer 5 disposed below the inner lower magnet 4, a voice coil 7 fitted on the outer end faces of the inner upper washer 1 and the inner lower washer 5, a flux ring 6 fitted on the outer end face of the voice coil 7, an outer upper washer 8 fitted on the upper outer side of the voice coil 7, an outer upper magnet 9 disposed below the outer upper washer 8, an outer magnetic guide post 10 disposed below the outer upper magnet 9, an outer lower magnet 11 disposed below the outer magnetic guide post 10, an outer lower washer 12 disposed below the outer lower magnet 11, and a frame 13 disposed outside the outer upper washer 8 and the outer lower washer 12.

[0008] In addition, the differential drive speaker with two sets of magnetic circuits (inner and outer) according to the above-described technical solution of this utility model may also have the following additional technical features:

[0009] Optionally, the magnetic flux ring 6 is an aluminum ring.

[0010] Optionally, the basin stand 13 is made of aluminum.

[0011] Optionally, the inner upper magnet 2, the inner lower magnet 4, the outer upper magnet 9, and the outer lower magnet 11 are neodymium iron boron magnets.

[0012] To achieve the above objectives, a second aspect of this utility model discloses an audio system, including a differentially driven loudspeaker with two sets of magnetic circuits (inner and outer) as described in the first aspect embodiment.

[0013] The advantages of this invention are: light weight, low energy consumption, high magnetic field strength, and high sensitivity. Attached Figure Description

[0014] Figure 1 is a cross-sectional view of a differential drive horn with two sets of magnetic circuits (inner and outer) provided in an embodiment of the present invention.

[0015] Figure 2 is an exploded view of a differentially driven horn with two sets of magnetic circuits, one inside and one outside, provided in another embodiment of this utility model.

[0016] Figure label:

[0017] 1-Inner upper washer, 2-Inner upper magnet, 3-Inner magnetic post, 4-Inner lower magnet, 5-Inner lower washer, 6-Fluorescence ring, 7-Voice coil, 8-Outer upper washer, 9-Outer upper magnet, 10-Outer magnetic post, 11-Outer lower magnet, 12-Outer lower washer, 13-Screen frame. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or components / elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0019] The following description, in conjunction with the accompanying drawings, describes a differentially driven speaker with two sets of magnetic circuits, inner and outer, according to an embodiment of the present invention.

[0020] Figure 1 is a cross-sectional view of a differentially driven horn with two sets of magnetic circuits (inner and outer) according to one embodiment of the present invention; Figure 2 is an exploded view of a differentially driven horn with two sets of magnetic circuits (inner and outer) according to another embodiment of the present invention. As shown in Figure 1-2, the differential drive speaker with two sets of magnetic circuits includes: an inner upper washer 1, an inner upper magnet 2 located below the inner upper washer 1, an inner magnetic guide post 3 located below the inner upper magnet 2, an inner lower magnet 4 located below the inner magnetic guide post 3, an inner lower washer 5 located below the inner lower magnet 4, a voice coil 7 fitted on the outer end faces of the inner upper washer 1 and the inner lower washer 5, a flux ring 6 fitted on the outer end face of the voice coil 7, an outer upper washer 8 fitted on the upper outer side of the voice coil 7, an outer upper magnet 9 located below the outer upper washer 8, an outer magnetic guide post 10 located below the outer upper magnet 9, an outer lower magnet 11 located below the outer magnetic guide post 10, an outer lower washer 12 located below the outer lower magnet 11, and a frame 13 located outside the outer upper washer 8 and the outer lower washer 12.

[0021] Specifically, the inner and outer sets of upper magnets 2 and lower magnets 4 form two magnetic gaps, each consisting of an inner and outer magnet combination, resulting in a stronger magnetic force. The two sets of voice coil windings move within these magnetic gaps. The total area of ​​the two windings is double that of a traditional single winding, thus generating twice the heat radiation capacity and stronger heat dissipation. The heat is then quickly conducted away through the frame 13. When the two windings are energized, two driving forces are generated in the magnetic gaps, which are much greater than the traditional single driving force, resulting in more converted sound energy and naturally improving the speaker's sensitivity. The speaker system of this application has four magnets, two more than type A, further increasing the overall magnetic field strength and speaker sensitivity. The two magnetic circuit systems have a compact structure, sharing the same magnetic column, significantly reducing the weight of the entire transducer and facilitating installation and transportation.

[0022] It should be noted that within the same frame, the two magnetic circuit systems form two magnetic gaps with opposite magnetic fields, and each gap has the same magnetic field strength as a conventional single magnetic circuit design; each magnetic gap contains a voice coil winding, and the two windings have the same size and impedance, but their directions are opposite to each other.

[0023] According to this invention, a differential-driven speaker with two sets of magnetic circuits (inner and outer) shares a single frame, significantly reducing the overall weight of the speaker and making it less bulky. Sharing the same vibration system reduces energy loss, increases efficiency, and improves sensitivity. Furthermore, the magnetic field strength generated by the two magnetic circuit systems is far greater than that of a single magnetic circuit, providing more energy and further enhancing sensitivity. The dual voice coil structure creates twice the heat dissipation area, resulting in faster heat dissipation and increased power handling capacity. The complete magnetic circuit, consisting of inner and outer magnets, provides a stronger magnetic force than a typical single magnet.

[0024] According to one embodiment of the present invention, the flux ring 6 is an aluminum ring, which can reduce harmonic distortion and reduce the high-frequency inductance generated during the movement of the voice coil.

[0025] Specifically, aluminum flux rings can reduce the weight of the product.

[0026] According to one embodiment of the present invention, the material of the basin frame 13 is aluminum.

[0027] Specifically, aluminum baskets can reduce the weight of the product, and aluminum has good thermal conductivity, which helps to dissipate internal heat, and good heat dissipation effectively improves power.

[0028] According to one embodiment of the present invention, the inner upper magnet 2, the inner lower magnet 4, the outer upper magnet 9, and the outer lower magnet 11 are neodymium iron boron magnets.

[0029] Specifically, neodymium iron boron (NdFeB) materials are relatively lightweight, which can reduce product weight. Furthermore, NdFeB has good magnetic properties and offers excellent cost-effectiveness.

[0030] Based on the above embodiments, embodiments of this application also propose an audio system, including: a differentially driven loudspeaker with two sets of magnetic circuits, inner and outer, as described in the above embodiments.

[0031] According to this invention, the speaker features a differentially driven horn with two sets of magnetic circuits (inner and outer). Both magnetic circuit systems share a single frame, significantly reducing the overall weight of the horn and making it less bulky. Sharing the same vibration system reduces energy loss, increases efficiency, and improves sensitivity. Furthermore, the magnetic field strength generated by the two magnetic circuit systems is far greater than that of a single magnetic circuit, providing more power and further enhancing sensitivity. The dual voice coil structure creates twice the heat dissipation area, resulting in faster heat dissipation and increased power handling capacity. The complete magnetic circuit, consisting of inner and outer magnets, provides a stronger magnetic force than a typical single magnet.

[0032] The above embodiments are preferred implementations of this application. In addition, this application can be implemented in other ways. Any obvious substitutions without departing from the concept of this application are within the protection scope of this application.

Claims

1. A differential-driven loudspeaker with two sets of magnetic circuits (internal and external), characterized in that, include: The inner upper washer (1), the inner upper magnet (2) located below the inner upper washer (1), the inner magnetic guide post (3) located below the inner upper magnet (2), the inner lower magnet (4) located below the inner magnetic guide post (3), the inner lower washer (5) located below the inner lower magnet (4), the voice coil (7) fitted on the outer end faces of the inner upper washer (1) and the inner lower washer (5), and the flux ring (6) fitted on the outer end face of the voice coil (7). The outer upper washer (8) mounted on the upper outer side of the voice coil (7), the outer upper magnet (9) located below the outer upper washer (8), the outer magnetic post (10) located below the outer upper magnet (9), the outer lower magnet (11) located below the outer magnetic post (10), the outer lower washer (12) located below the outer lower magnet (11), and the frame (13) located outside the outer upper washer (8) and the outer lower washer (12).

2. The differential drive loudspeaker with two sets of magnetic circuits (inner and outer) according to claim 1, characterized in that: The magnetic flux ring (6) is an aluminum ring.

3. A differential drive loudspeaker with two sets of magnetic circuits (inner and outer) according to claim 1, characterized in that: The basin stand (13) is made of aluminum.

4. A differential drive loudspeaker with two sets of magnetic circuits (inner and outer) according to claim 1, characterized in that: The inner upper magnet (2), inner lower magnet (4), outer upper magnet (9), and outer lower magnet (11) are neodymium iron boron magnets.

5. A sound device, characterized by: Including a differential drive horn with two sets of magnetic circuits, one inside and one outside, as described in any one of claims 1-4.

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