Double-diaphragm loudspeaker

Abstract

The utility model discloses a double-diaphragm loudspeaker, and belongs to the technical field of loudspeakers. A double-diaphragm loudspeaker comprises a loudspeaker support, an upper diaphragm is arranged above the loudspeaker support, a lower diaphragm is arranged below the loudspeaker support, a supporting ring is arranged between the upper diaphragm and the loudspeaker support and between the lower diaphragm and the loudspeaker support, the supporting ring is connected with the loudspeaker support in an attached mode, and an inner partition is arranged in the loudspeaker support. The inner partition and the loudspeaker support are arranged to be of an integrated structure. In order to solve the problem that the traditional loudspeaker consists of a vibrating diaphragm and a voice coil, so that one side of the vibrating diaphragm produces sound while the other side of the vibrating diaphragm cannot be effectively transmitted, the double-sided vibrating loudspeaker is adopted, one vibrating diaphragm is used for playing music, and the other vibrating diaphragm can generate reverse sound waves to counteract the sound transmitted to the outside, so that the sound leakage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, in particular to a double-diaphragm loudspeaker. Background Art

[0002] With the needs of people's lives and work, loudspeakers have been widely used, but most existing loudspeakers use a single diaphragm, and surround sound is formed by using two loudspeakers together. The cost of use is relatively high, and the single diaphragm setting has only one diaphragm.

[0003] Traditional speakers are composed of a diaphragm and a voice coil, so when the diaphragm vibrates, the sound cannot be effectively transmitted to the other side. Utility Model Content

[0004] The purpose of the utility model is to provide a double-diaphragm speaker. With this double-sided vibration speaker, one diaphragm is used to play music, and the other diaphragm can generate anti-phase sound waves to offset the sound transmitted to the outside, thereby reducing sound leakage and solving the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dual-diaphragm speaker, comprising a speaker bracket, an upper diaphragm is arranged above the speaker bracket, a lower diaphragm is arranged below the speaker bracket, a support ring is arranged between the upper diaphragm, the lower diaphragm and the speaker bracket, the support ring is tightly connected to the speaker bracket, an inner partition is arranged inside the speaker bracket, and the inner partition and the speaker bracket are arranged as an integrated structure.

[0006] Preferably, the speaker bracket is provided with sound holes on all four sides, and the sound holes extend into the interior of the speaker bracket.

[0007] Preferably, a voice coil bracket is provided between the inner partitions, the voice coil bracket is connected to the speaker bracket through a slot, and two-way voice coils are provided on both side surfaces of the voice coil bracket, and the two-way voice coil is fittedly connected to the voice coil bracket.

[0008] Preferably, a first magnet and a third magnet are disposed above the inner partition, and a second magnet and a fourth magnet are disposed below the inner partition.

[0009] Preferably, the first magnet and the third magnet are respectively located on both sides of the voice coil bracket, and the first magnet and the third magnet are installed above the sound hole.

[0010] Preferably, the second magnet and the fourth magnet are respectively located on both sides of the voice coil bracket, and the second magnet and the fourth magnet are installed below the sound hole.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model adopts this double-sided vibration speaker, one diaphragm is used to play music, and the other diaphragm can generate anti-phase sound waves to offset the sound transmitted to the outside, thereby reducing the problem of sound leakage;

[0013] 3. In the utility model, the first magnet and the third magnet have opposite magnetic properties, and the direction of the magnetic field is from left to right. After the two-way voice coil is connected to alternating current, the current direction of the upper part of the two-way voice coil faces inward. Customized for the left hand, the two-way voice coil is subjected to a downward force. The second magnet and the fourth magnet have opposite magnetic properties, and the direction of the magnetic field is from right to left. After the two-way voice coil is connected to alternating current, the current direction of the upper part of the two-way voice coil faces outward. The two-way voice coil is also subjected to a downward force. In this way, the two-way voice coil moves up and down in the magnetic field under the action of the magnetic field forces of the upper and lower magnets, thereby driving the diaphragm to vibrate and make sounds. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the overall front view of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall expanded structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the overall side section structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0018] In the figure: 1. speaker bracket; 2. upper diaphragm; 3. lower diaphragm; 4. first magnet; 5. second magnet; 6. third magnet; 7. fourth magnet; 8. voice coil bracket; 9. two-way voice coil; 101. support ring; 102. sound hole; 103. inner partition. DETAILED DESCRIPTION

[0019] 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.

[0020] In order to solve the problem that the traditional speaker is composed of a diaphragm and a voice coil, so the diaphragm vibrates and sounds on one side, but the sound on the other side cannot be effectively transmitted; please refer to Figure 1-4 , the utility model provides the following solutions:

[0021] A double-diaphragm speaker comprises a speaker bracket 1, an upper diaphragm 2 is arranged above the speaker bracket 1, a lower diaphragm 3 is arranged below the speaker bracket 1, a support ring 101 is arranged between the upper diaphragm 2 and the lower diaphragm 3 and the speaker bracket 1, the support ring 101 is closely connected to the speaker bracket 1, an inner partition 103 is arranged inside the speaker bracket 1, and the inner partition 103 and the speaker bracket 1 are arranged as an integrated structure;

[0022] In this embodiment, the speaker is composed of two diaphragms, so that the diaphragm can produce sound on both sides when vibrating up and down, and the sound pressure can be increased by more than 3dB. In addition, the voice coil of this structure adopts a flat structure and is placed vertically, which reduces the size in the width direction and is more conducive to use in smart glasses or smart headphones. The magnetic circuit adopts an upper and lower four-magnetic circuit structure, which increases the efficiency of the voice coil in the magnetic field by 50%;

[0023] The speaker bracket 1 is provided with sound holes 102 all around, and the sound holes 102 extend to the inside of the speaker bracket 1. A voice coil bracket 8 is provided between the inner partitions 103, and the voice coil bracket 8 is connected to the speaker bracket 1 through a card slot. Two-way voice coils 9 are provided on both side surfaces of the voice coil bracket 8, and the two-way voice coils 9 are closely connected to the voice coil bracket 8. A first magnet 4 and a third magnet 6 are provided above the inner partition 103, and a second magnet 5 and a fourth magnet 7 are provided below the inner partition 103. The first magnet 4 and the third magnet 6 are respectively located on both sides of the voice coil bracket 8, and the first magnet 4 and the third magnet 6 are installed above the sound hole 102, and the second magnet 5 and the fourth magnet 7 are respectively located on both sides of the voice coil bracket 8, and the second magnet 5 and the fourth magnet 7 are installed below the sound hole 102;

[0024] In this embodiment, the first magnet 4, the second magnet 5, the third magnet 6 and the fourth magnet 7 are composed, and the four magnets are fixed on the bracket. A sound leakage hole 102 is opened in the middle of the bracket to facilitate internal pressure relief when the upper diaphragm 2 and the lower diaphragm 3 vibrate. The magnetic directions of the four magnets are all horizontal, that is, the left side is N (S), and the right side is S (N). The first magnet 4 and the third magnet 6 have the same magnetic properties, and the second magnet 5 and the fourth magnet 7 have the same magnetic properties.

[0025] The voice coil is in the shape of a ring structure, and is a flat plane structure in the height direction. The voice coils of traditional speakers are placed horizontally, while the voice coils of this structure are placed vertically. This can save the width of the speaker, and the speaker can be made narrower. The voice coil is attached to the bracket to support and fix it to prevent deformation of the voice coil.

[0026] Working principle: the first magnet 4 and the third magnet 6 have opposite magnetism, and the direction of the magnetic field is from left to right. After the two-way voice coil 9 is connected to alternating current, the current direction of the upper part of the two-way voice coil 9 faces inward. Customized for the left hand, the two-way voice coil 9 is subjected to a downward force. The second magnet 5 and the fourth magnet 7 have opposite magnetism, and the direction of the magnetic field is from right to left. After the two-way voice coil 9 is connected to alternating current, the current direction of the upper part of the two-way voice coil 9 faces outward. The two-way voice coil 9 is also subjected to a downward force. In this way, the two-way voice coil 9 moves up and down in the magnetic field under the action of the magnetic field forces of the upper and lower magnets, thereby driving the diaphragm to vibrate and make sound.

[0027] 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.

[0028] Although 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 dual-diaphragm speaker, comprising a speaker bracket (1), characterized in that: An upper diaphragm (2) is arranged above the speaker bracket (1), and a lower diaphragm (3) is arranged below the speaker bracket (1); a support ring (101) is arranged between the upper diaphragm (2), the lower diaphragm (3) and the speaker bracket (1); the support ring (101) is closely connected to the speaker bracket (1); an inner partition (103) is arranged inside the speaker bracket (1); and the inner partition (103) and the speaker bracket (1) are arranged as an integrated structure.

2. A dual-diaphragm speaker according to claim 1, characterized in that: The speaker bracket (1) is provided with sound holes (102) on all four sides, and the sound holes (102) extend into the interior of the speaker bracket (1).

3. A dual-diaphragm speaker according to claim 2, characterized in that: A voice coil bracket (8) is arranged between the inner partitions (103), the voice coil bracket (8) is connected to the speaker bracket (1) via a slot, two-way voice coils (9) are arranged on both side surfaces of the voice coil bracket (8), and the two-way voice coils (9) are closely connected to the voice coil bracket (8).

4. The dual-diaphragm speaker according to claim 3, characterized in that: A first magnet (4) and a third magnet (6) are arranged above the inner partition (103), and a second magnet (5) and a fourth magnet (7) are arranged below the inner partition (103).

5. The dual-diaphragm speaker according to claim 4, characterized in that: The first magnet (4) and the third magnet (6) are respectively located on both sides of the voice coil bracket (8), and the first magnet (4) and the third magnet (6) are installed above the sound hole (102).

6. The dual-diaphragm speaker according to claim 4, characterized in that: The second magnet (5) and the fourth magnet (7) are respectively located on both sides of the voice coil bracket (8), and the second magnet (5) and the fourth magnet (7) are installed below the sound hole (102).

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