BOX module for improving magnetic performance of loudspeaker monomer

Abstract

The utility model discloses a BOX module capable of increasing the magnetic performance of a loudspeaker monomer. The loudspeaker comprises a loudspeaker single body and a shell which are buckled with each other, a sound cavity is formed between the loudspeaker single body and the shell, the loudspeaker further comprises a magnet, the magnet is fixedly arranged on one side, far away from the loudspeaker single body, of the sound cavity of the shell, and the magnet and the magnet of the loudspeaker single body repel each other; the shell is provided with the magnet repellent to the magnet of the loudspeaker single body, the magnet can generate a magnetic field opposite to the magnet of the loudspeaker single body in direction, the repellent effect can change the distribution of the original magnetic field, the magnetic field which is possibly leaked or wasted originally can be redirected, and the magnetic field is guided to an area closer to the voice coil at present, so that the loudspeaker single body can be effectively protected. Therefore, the interaction between the voice coil and the magnetic field is enhanced, and more magnetic induction lines can pass through the cutting path of the voice coil on the premise of not occupying the internal space of the loudspeaker monomer, so that the BL value of the loudspeaker monomer is increased, and finally the effect of increasing the frequency response of the loudspeaker is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic devices, in particular to a BOX module for increasing the magnetic performance of a speaker unit. Background Art

[0002] In a speaker system, a Box module usually includes a speaker unit, a sound cavity structure, and a modular assembly of necessary electrical components. This module is designed as a compact unit to be embedded inside a terminal device (such as a smart phone, a tablet computer, a laptop computer, etc.) to achieve an audio output function.

[0003] The magnet in the speaker unit is a key component for generating a magnetic field, and the magnetic field interacts with the current in the voice coil to drive the diaphragm to move, thereby generating sound. In this process, the quality of the magnetic performance directly affects the strength, stability, and uniformity of the magnetic field, and further affects the sound output ability of the speaker at different frequencies.

[0004] As terminal products continuously pursue a lighter and thinner design, the physical space left for the speaker is greatly compressed. Due to space limitations, the speakers in handheld terminals often cannot be equipped with high-power drive units, resulting in insufficient sound power and difficulty in increasing the loudness. In a noisy environment, such as outdoors, public transportation, or a busy office, if the loudness of the speaker of a handheld terminal device is insufficient, it is very difficult for users to hear the audio content clearly, which not only affects the normal use of users, but may also cause important information or instructions to be missed. Summary of the Utility Model

[0005] In view of the problems existing in the above-mentioned prior art, the utility model provides a BOX module for increasing the magnetic performance of a speaker unit, which can effectively solve the problems existing in the above-mentioned prior art.

[0006] The technical solution of the utility model is as follows:

[0007] According to one aspect of the utility model, it includes: a speaker unit and a housing that are snap-fitted with each other. An acoustic cavity is formed between the speaker unit and the housing. It further includes a magnet. The housing is fixedly provided with a magnet on the side of the acoustic cavity away from the speaker unit, and the magnet repels the magnet of the speaker unit.

[0008] Further, the magnet is fixedly provided on the outer surface of the housing.

[0009] Further, the magnet is fixedly provided on the inner surface of the acoustic cavity.

[0010] Further, the housing is provided with a mounting groove, and the magnet is fixedly embedded in the mounting groove.

[0011] Further, the magnet is glued to the mounting groove.

[0012] Furthermore, the housing is fixedly connected to the magnet by injection molding.

[0013] Furthermore, the projection area of the magnet at least covers the magnet of the speaker unit.

[0014] Adopting the above technical solution, compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] First, a magnet that repels the magnet of the speaker unit is provided on the housing. The magnet will generate a magnetic field opposite to the direction of the magnet of the speaker unit. This repulsive effect will change the distribution of the original magnetic field, and can redirect the magnetic field that may have leaked or been wasted. This part of the magnetic field is now guided to an area closer to the voice coil, thereby enhancing the interaction between the voice coil and the magnetic field. Without occupying the space inside the speaker unit, more magnetic induction lines can pass through the cutting path of the voice coil, thereby increasing the BL value of the speaker unit and ultimately achieving the effect of increasing the frequency response of the speaker.

[0016] Second, the magnet is glued to the mounting groove. The gluing method is applicable to magnets of various shapes and sizes, as well as mounting grooves of different materials, and the gluing method can make the combination between the magnet and the mounting groove look more beautiful.

[0017] Third, the projection area of the magnet at least covers the magnet of the speaker unit. When the projection area of the magnet completely covers or exceeds the magnet of the speaker unit, the magnetic field strength can be further enhanced. A stronger magnetic field means that the driving force received by the voice coil in the magnetic field is greater, which helps to improve the sound output ability and sound quality performance of the speaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is an exploded structural schematic diagram of the present utility model;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the present utility model;

[0021] Figure 3 It is a cross-sectional structural schematic diagram of the first embodiment of the present utility model;

[0022] Figure 4 It is a cross-sectional structural schematic diagram of the second embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the simulation results of the present utility model and the reference group without a magnet.

[0024] Figure 6 This is a schematic diagram of the test results of the frequency response curve of the present utility model.

[0025] Figure 7 This is a schematic diagram of the magnetic induction line distribution of the reference group without a magnet.

[0026] Figure 8 This is a schematic diagram of the magnetic induction line distribution of the present utility model.

[0027] In the figure: housing - 1, mounting groove - 11, sound cavity - 12, speaker unit - 13, diaphragm - 131, sound outlet - 14, magnet - 2. Specific Embodiments

[0028] The present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be specifically noted that the following embodiments are only used to illustrate the present utility model, but do not limit the scope of the present utility model. Similarly, the following embodiments are only partial embodiments of the present utility model rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0029] As Figures 1 to 4 shown, this solution provides a BOX module for increasing the magnetic performance of a speaker unit.

[0030] Please refer to Figures 1 to 3 , which includes: a speaker unit 13 and a housing 1 that are snap - fitted to each other. There is a sound cavity 12 formed between the speaker unit 13 and the housing 1. It further includes a magnet 2. The housing 1 is fixedly provided with a magnet 2 on the side of the sound cavity 12 away from the speaker unit 13, and the magnet 2 repels the magnet (not shown in the figure) of the speaker unit 13. The magnetic field generated by the magnet in the speaker unit 13 is three - dimensionally distributed, but not all the magnetic fields in all directions can be effectively used to drive the voice coil (not shown in the figure) to vibrate and generate sound. Especially the magnetic field distributed above the housing 1, because it is far from the main action area of the voice coil, its energy contribution to sound generation is relatively low. Therefore, by setting a magnet 2 in the housing 1 that repels the magnet of the speaker unit 13, the magnet 2 will generate a magnetic field in the opposite direction to the magnet of the speaker unit 13. This repulsive effect will change the distribution of the original magnetic field, and can redirect the magnetic field that may originally leak or be wasted. This part of the magnetic field is now guided to an area closer to the voice coil, thereby enhancing the interaction between the voice coil and the magnetic field. It can allow more magnetic induction lines to pass through the cutting path of the voice coil without occupying the space inside the speaker unit 13, thereby increasing the BL value of the speaker unit 13 and ultimately achieving the effect of increasing the frequency response of the speaker.

[0031] Please refer to Figures 1 to 3 , the magnet 2 is fixedly arranged on the outer surface of the housing 1. The housing 1 is provided with an installation groove 11, and the magnet 2 is fixedly embedded in the installation groove 11. Specifically, the magnet 2 is glued to the installation groove 11. The gluing method is applicable to magnets 2 of various shapes and sizes, as well as installation grooves 11 made of different materials, and the gluing method can make the combination between the magnet 2 and the installation groove 11 look more beautiful. The housing 1 is fixedly connected to the magnet 2 by injection molding. The projection area of the magnet 2 at least covers the magnet of the speaker unit 13. When the projection area of the magnet 2 completely covers or exceeds the magnet of the speaker unit 13, the magnetic field strength can be further enhanced. A stronger magnetic field means that the driving force received by the voice coil in the magnetic field is greater, which helps to improve the sound output ability and sound quality performance of the speaker.

[0032] Please refer to Figure 5 , in which, the green line represents the reference group without magnets, and the blue line represents the addition of the antipolar magnet 2; from Figure 5 it can be seen that for the speaker unit 13 with the addition of the antipolar magnet 2, the BL value has been significantly improved.

[0033] Please refer to Figure 6 , in which, the red line represents the reference group without magnets, and the blue line represents the addition of the antipolar magnet 2; from Figure 6 it can be seen that the sensitivity response of the speaker unit 13 with the addition of the antipolar magnet 2 has increased by 2 - 5 dB in the full frequency band.

[0034] Embodiment 2:

[0035] Please refer to Figure 4 , the difference from Embodiment 1 is that: the magnet 2 is fixedly arranged on the inner surface of the sound cavity 12.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A BOX module for increasing the magnetic properties of a speaker unit, comprising: A loudspeaker unit (13) and a housing (1) are interlocked, a sound cavity (12) is formed between the loudspeaker unit (13) and the housing (1), and the invention is characterized in that it also includes a magnet (2), the housing (1) is fixedly provided with a magnet (2) on a side of the sound cavity (12) away from the loudspeaker unit (13), and the magnet (2) repels the magnet of the loudspeaker unit (13).

2. A BOX module for increasing the magnetic properties of a speaker unit as claimed in claim 1, characterized in that: The magnet (2) is fixedly arranged on the outer surface of the housing (1).

3. A BOX module for increasing the magnetic properties of a speaker unit as claimed in claim 1, characterized in that: The magnet (2) is fixedly arranged on the inner surface of the sound cavity (12).

4. A BOX module for increasing the magnetic properties of a speaker unit as claimed in claim 2 or 3, characterized in that: The housing (1) is provided with a mounting groove (11), and the magnet (2) is fixedly embedded in the mounting groove (11).

5. A BOX module for increasing the magnetic properties of a speaker unit as claimed in claim 4, characterized in that: The magnet (2) is glued to the mounting groove (11).

6. A BOX module for increasing the magnetic properties of a speaker unit as claimed in claim 4, characterized in that: The housing (1) is fixedly connected to the magnet (2) by injection molding.

7. A BOX module for increasing the magnetic properties of a speaker unit as claimed in claim 1, characterized in that: The projection area of ​​the magnet (2) at least covers the magnet of the speaker unit (13).

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