Ultrathin double-unit loudspeaker

Abstract

The utility model discloses an ultrathin double-unit loudspeaker, and belongs to the technical field of loudspeakers. An ultrathin double-unit loudspeaker comprises a mid-bass unit and a treble unit, the mid-bass unit comprises a mid-bass front cover and a mid-bass shell, the mid-bass front cover is installed above the mid-bass shell, the treble unit comprises a treble shell, the treble shell is installed above the mid-bass front cover, and the treble shell is installed above the mid-bass shell. The outer surface of the high-pitch shell is provided with a high-pitch sound outlet hole, the high-pitch sound outlet hole extends to the interior of the mid-bass unit, and the periphery of the high-pitch sound outlet hole is provided with mid-bass sound outlet holes. In order to solve the problem that the endurance time of an earphone is shortened due to the fact that an existing double-unit loudspeaker is limited by the structure of the existing double-unit loudspeaker and the space of a temporal cavity of the existing double-unit loudspeaker is relatively small and cannot accommodate a large-capacity battery structure, a diaphragm voice coil assembly of a tweeter is placed above a magnetic circuit, so that the tweeter works by utilizing a magnetic field of a mid-bass loudspeaker; as no magnetic circuit structure is arranged in the tweeter, the height is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, in particular to an ultra-thin double-unit loudspeaker. Background Art

[0002] The double-unit speaker is a mid-bass speaker with a tweeter attached to it. Therefore, the essence of the double-unit speaker is the superposition of two speakers, so the overall height of the double-unit speaker will become higher. The total height of the double-unit speaker depends on the height of the tweeter.

[0003] Existing dual-unit speakers are limited by their own structure. The temporal cavity space is relatively small and cannot accommodate a larger capacity battery structure, which shortens the battery life of the headphones. Utility Model Content

[0004] The purpose of the utility model is to provide an ultra-thin dual-unit speaker, in which the tweeter places the diaphragm voice coil assembly above the magnetic circuit, thereby utilizing the magnetic field of the mid-bass speaker to work. Since there is no magnetic circuit structure inside the tweeter, the height is greatly reduced, which can solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ultra-thin dual-unit speaker, comprising a mid-bass unit and a tweeter unit, the mid-bass unit comprising a mid-bass front cover and a mid-bass shell, the mid-bass front cover is installed above the mid-bass shell, the tweeter unit comprises a tweeter shell, the tweeter shell is installed above the mid-bass front cover, a tweeter sound outlet hole is provided on the outer surface of the tweeter shell, the tweeter sound outlet hole extends to the interior of the mid-bass unit, and mid-bass sound outlet holes are provided around the tweeter sound outlet hole.

[0006] Preferably, a tweeter diaphragm is disposed inside the tweeter unit, and a tweeter voice coil is disposed below the tweeter diaphragm.

[0007] Preferably, a mid-bass diaphragm is arranged inside the mid-bass unit, and a mid-bass voice coil is arranged below the mid-bass diaphragm.

[0008] Preferably, an upper magnetic circuit is arranged above the mid-bass diaphragm, and a lower magnetic circuit is arranged below the mid-bass voice coil.

[0009] Preferably, the upper magnetic circuit includes an upper external magnet and an upper internal magnet, the lower magnetic circuit includes a lower external magnet and a lower internal magnet, and the treble sound outlet hole passes through the upper internal magnet and extends to above the mid-bass diaphragm.

[0010] Preferably, a rear cavity leakage hole is provided on one side of the bottom of the mid-bass shell, and an upper middle magnet is provided between the upper outer magnet and the upper inner magnet.

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

[0012] 1. The tweeter of the ultra-thin double-unit speaker of the utility model is composed of a mid-bass speaker and a tweeter with upper and lower magnetic circuits. The tweeter does not contain a magnet inside, but only has a shell, a diaphragm and a voice coil. The tweeter cleverly uses any side of the magnetic circuit of the mid-bass speaker. The tweeter places the diaphragm voice coil assembly above the magnetic circuit, thereby using the magnetic field of the mid-bass speaker to work. Since there is no magnetic circuit structure inside the tweeter, the height is greatly reduced, and the treble of the tweeter can be less than 0.5mm. Therefore, the overall thickness of the ultra-thin double-unit speaker is only increased by 0.5mm, making it the speaker with the smallest height among the superimposed double-unit speakers.

[0013] 2. In the present invention, the high frequency of the mid-bass speaker decays faster, and is combined with the tweeter through frequency division, so that the high frequency bandwidth of the dual-unit speaker is effectively expanded, and the sound quality of the dual-unit speaker is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the middle sounding speaker of the utility model;

[0015] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of ;

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

[0017] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure.

[0018] In the figure: 1. mid-bass unit; 2. tweeter unit; 3. upper magnetic circuit; 4. lower magnetic circuit; 101. mid-bass front cover; 102. mid-bass shell; 103. mid-bass diaphragm; 104. mid-bass voice coil; 1021. rear cavity leakage hole; 201. mid-bass sound outlet hole; 202. treble sound outlet hole; 203. tweeter diaphragm; 204. tweeter voice coil; 205. tweeter shell; 301. upper external magnet; 302. upper internal magnet; 303. upper middle magnet; 401. lower external magnet; 402. lower internal magnet. 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 existing dual-unit speakers are limited by their own structure, and the space of the temporal cavity is relatively small and cannot accommodate a battery structure with a large capacity, thereby shortening the battery life of the headphones; the utility model provides the following solutions:

[0021] Example 1, please refer to Figure 1-2 :

[0022] An ultra-thin dual-unit speaker comprises a mid-bass unit 1 and a tweeter unit 2, wherein the mid-bass unit 1 comprises a mid-bass front cover 101 and a mid-bass housing 102, wherein the mid-bass front cover 101 is mounted above the mid-bass housing 102, and the tweeter unit 2 comprises a tweeter housing 205, wherein the tweeter housing 205 is mounted above the mid-bass front cover 101, wherein a tweeter sound outlet 202 is arranged on an outer surface of the tweeter housing 205, wherein the tweeter sound outlet 202 extends into the interior of the mid-bass unit 1, and mid-bass sound outlet 201 is arranged around the tweeter sound outlet 202;

[0023] In this embodiment, a tweeter diaphragm 203 is provided inside the tweeter unit 2, a tweeter voice coil 204 is provided below the tweeter diaphragm 203, a mid-bass diaphragm 103 is provided inside the mid-bass unit 1, a mid-bass voice coil 104 is provided below the mid-bass diaphragm 103, an upper magnetic circuit 3 is provided above the mid-bass diaphragm 103, a lower magnetic circuit 4 is provided below the mid-bass voice coil 104, the upper magnetic circuit 3 includes an upper external magnet 301 and an upper internal magnet 302, the lower magnetic circuit 4 includes a lower external magnet 401 and a lower internal magnet 402, the tweeter sound hole 202 penetrates the upper internal magnet 302 and extends to the top of the mid-bass diaphragm 103, and a rear cavity leakage hole 1021 is provided on one side of the bottom of the mid-bass housing 102;

[0024] In this embodiment, the magnetic circuit system of the mid-bass unit 1 is divided into an upper and lower double magnetic circuit structure, each side of the magnetic circuit has only two magnets, the mid-bass diaphragm 103 can adopt a folded ring structure or a flat structure, the mid-bass voice coil 104 is a flat structure adhered to one side of the mid-bass diaphragm 103, and the mid-bass speaker emits sound through the treble sound outlet 202;

[0025] In this embodiment, the tweeter unit 2 has no magnetic circuit system, and is only composed of a double-support ring tweeter diaphragm 203, a tweeter voice coil 204 and a tweeter housing 205. The tweeter voice coil 204 is bonded to the tweeter diaphragm 203, and the tweeter diaphragm 203 is placed above the front cover of the mid-bass unit 1. The tweeter voice coil 204 is just located above the inner and outer magnetic gaps, so that the tweeter voice coil can cleverly use the magnetic field of the upper magnetic circuit 3 of the mid-bass to work. The tweeter housing can have a hole in the middle or a hole at the edge.

[0026] In this embodiment, the high frequency of the mid-bass speaker attenuates relatively quickly, and is combined with the tweeter through frequency division, so that the high frequency bandwidth of the dual unit is effectively expanded, and the sound quality of the dual unit speaker is greatly improved. Among them, there are four pads on the PCB of the mid-bass speaker, two are woofer pads, and two are tweeter pads. There is a component on the PCB for frequency division.

[0027] Example 2, please refer to Figure 3-4 :

[0028] An ultra-thin double-unit speaker comprises a mid-bass unit 1 and a tweeter unit 2, wherein the mid-bass unit 1 comprises a mid-bass front cover 101 and a mid-bass housing 102, wherein the mid-bass front cover 101 is mounted above the mid-bass housing 102, and the tweeter unit 2 comprises a tweeter housing 205, wherein the tweeter housing 205 is mounted above the mid-bass front cover 101, wherein the outer surface of the tweeter housing 205 is provided with a mid-bass sound outlet hole 201, and the outer side of the mid-bass sound outlet hole 201 is provided with a tweeter sound outlet hole 202, and the tweeter sound outlet holes 202 are distributed on the surface of the mid-bass front cover 101;

[0029] In this embodiment, a tweeter diaphragm 203 is provided inside the tweeter unit 2, a tweeter voice coil 204 is provided below the tweeter diaphragm 203, a mid-bass diaphragm 103 is provided inside the mid-bass unit 1, a mid-bass voice coil 104 is provided below the mid-bass diaphragm 103, an upper magnetic circuit 3 is provided above the mid-bass diaphragm 103, a lower magnetic circuit 4 is provided below the mid-bass voice coil 104, the upper magnetic circuit 3 includes an upper external magnet 301 and an upper internal magnet 302, the lower magnetic circuit 4 includes a lower external magnet 401 and a lower internal magnet 402, a rear cavity leakage hole 1021 is provided on one side of the bottom of the mid-bass housing 102, and an upper middle magnet 303 is provided between the upper external magnet 301 and the upper internal magnet 302;

[0030] In this embodiment, the magnetic circuit system of the mid-bass unit 1 is divided into an upper and lower dual magnetic circuit structure, the upper magnetic circuit 3 has three magnets, the lower magnetic circuit 4 has two magnets, the mid-bass diaphragm 103 can adopt a folded ring structure or a flat structure, the mid-bass voice coil 104 is a flat structure adhered to one side of the mid-bass diaphragm 103, and the mid-bass speaker emits sound through the edge hole of the upper magnet;

[0031] In this embodiment, the tweeter unit 2 has no magnetic circuit system, and is composed of only a tweeter diaphragm 203 with double supporting rings, a tweeter voice coil 204 and a tweeter housing 205. The tweeter voice coil 204 is bonded to the tweeter diaphragm 203, and the tweeter diaphragm 203 is placed above the front cover of the mid-bass unit 1. The tweeter voice coil 204 is just located above the upper middle magnet 303 and the upper inner magnet 302 of the upper magnetic circuit 3, so that the tweeter voice coil can cleverly utilize the magnetic field of the upper magnetic circuit 3 of the mid-bass to work, and the tweeter housing can have a middle opening or an edge opening.

[0032] Working principle: the magnetic circuit system of the mid-bass unit 1 is divided into an upper and lower dual magnetic circuit structure, and each side of the magnetic circuit has only two magnets. The mid-bass diaphragm 103 can adopt a folded ring structure or a flat structure. The mid-bass voice coil 104 is a flat structure glued to one side of the mid-bass diaphragm 103. The mid-bass speaker makes sound through the tweeter sound hole 202, and is affected by the magnetic field of the upper and lower magnetic circuits. After the voice coil is powered by alternating current, it drives the diaphragm to vibrate up and down and make sound. The tweeter voice coil 204 is placed above the upper magnetic circuit 3, and is affected by the magnetic field of the upper magnetic circuit 3. After the tweeter voice coil 204 is powered by alternating current, it drives the tweeter diaphragm 203 to vibrate up and down and make sound.

[0033] 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.

[0034] 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. An ultra-thin dual-unit speaker, comprising a mid-bass unit (1) and a tweeter unit (2), characterized in that: The mid-bass unit (1) comprises a mid-bass front cover (101) and a mid-bass housing (102), wherein the mid-bass front cover (101) is mounted above the mid-bass housing (102), and the tweeter unit (2) comprises a tweeter housing (205), wherein the tweeter housing (205) is mounted above the mid-bass front cover (101), and a tweeter sound outlet (202) is arranged on the outer surface of the tweeter housing (205), wherein the tweeter sound outlet (202) extends into the interior of the mid-bass unit (1), and mid-bass sound outlet holes (201) are arranged around the tweeter sound outlet (202).

2. The ultra-thin dual-unit speaker according to claim 1, characterized in that: A tweeter diaphragm (203) is arranged inside the tweeter unit (2), and a tweeter voice coil (204) is arranged below the tweeter diaphragm (203).

3. The ultra-thin dual-unit speaker according to claim 1, characterized in that: A mid-bass diaphragm (103) is arranged inside the mid-bass unit (1), and a mid-bass voice coil (104) is arranged below the mid-bass diaphragm (103).

4. The ultra-thin dual-unit speaker according to claim 3, characterized in that: An upper magnetic circuit (3) is arranged above the mid-bass diaphragm (103), and a lower magnetic circuit (4) is arranged below the mid-bass voice coil (104).

5. The ultra-thin dual-unit speaker according to claim 4, characterized in that: The upper magnetic circuit (3) comprises an upper external magnet (301) and an upper internal magnet (302), the lower magnetic circuit (4) comprises a lower external magnet (401) and a lower internal magnet (402), and the high-frequency sound outlet (202) penetrates the upper internal magnet (302) and extends to the top of the mid-bass diaphragm (103).

6. The ultra-thin dual-unit speaker according to claim 5, characterized in that: A rear cavity leakage hole (1021) is provided on one side of the bottom of the mid-bass housing (102), and an upper middle magnet (303) is provided between the upper outer magnet (301) and the upper inner magnet (302).

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