Loudspeaker module and audio device

Abstract

The application discloses a loudspeaker module and audio equipment. The loudspeaker module comprises a loudspeaker unit, a shell and an airflow disturbance piece. The loudspeaker unit is arranged in the shell and divides the shell into a front cavity and a rear cavity. The shell is also provided with a sound outlet hole which is communicated with the front cavity. The airflow disturbance piece is arranged in the front cavity. The airflow disturbance piece occupies a certain space, thereby reducing the space of the front cavity, moving the resonance peak to the medium and high frequencies, and improving the response of the medium and high frequencies. In addition, the sound wave generated by the operation of the loudspeaker drives the airflow disturbance piece to move, thereby disturbing the air in the front cavity, increasing the pressure of the front cavity, improving the flow rate of the air and the speed of the sound wave, and reducing the low-frequency resonance frequency of the vibration system in the loudspeaker unit, thereby improving the response of the bass.

Description

Technical Field

[0001] This invention relates to the field of audio technology, and in particular to a speaker module and an audio device using the speaker module. Background Technology

[0002] With the development of technology, users have increasingly higher demands for audio products. Speakers and their external housings play a crucial role in audio products, with the speaker housing divided into a front cavity and a rear cavity. Traditional audio products, such as speakers and headphones, have a larger front cavity due to the need for a curved design, which further leads to high-frequency attenuation, resulting in poor mid-to-high frequency response and subpar sound quality. Summary of the Invention

[0003] The main objective of this invention is to propose a speaker module that aims to improve the poor sound quality of audio products.

[0004] To achieve the above objectives, the present invention proposes a speaker module comprising a speaker unit, a housing, and an airflow disturbance component. The speaker unit is disposed within the housing, which is divided into a front cavity and a rear cavity. The housing also has a sound outlet, which communicates with the front cavity. The airflow disturbance component is disposed within the front cavity.

[0005] In one embodiment, the airflow disturbance element is a fan blade structure device.

[0006] In one embodiment, the rotating shaft of the fan blade structure is parallel to or coincides with the centerline of the sound outlet.

[0007] In one embodiment, the speaker module further includes a connecting frame, the connecting frame comprising:

[0008] Mounting base, the mounting base being connected to the cavity wall of the front cavity; and

[0009] The mounting shaft section is connected to the mounting base, and the axis of the mounting shaft section is parallel to or coincides with the center line of the sound outlet hole; the fan blade structure device is sleeved on the mounting shaft section.

[0010] In one embodiment, the rotation axis of the fan blade structure is perpendicular to the centerline of the sound outlet.

[0011] In one embodiment, a fixed shaft protrudes from the cavity wall of the front cavity, the fixed shaft being perpendicular to the centerline of the sound outlet, and the fan blade structure device being sleeved outside the fixed shaft section.

[0012] In one embodiment, the fan blade structure device is provided with one.

[0013] In one embodiment, the anterior cavity includes:

[0014] transition cavity; and

[0015] The front sound tube has a transition cavity located close to the speaker unit. One end of the front sound tube is connected to the transition cavity, and the other end is connected to the sound outlet. The fan blade structure is located at the opening where the front sound tube connects to the transition cavity.

[0016] In one embodiment, the front sound tube is cylindrical, and the inner diameter of the transition cavity gradually decreases from the side closest to the speaker unit towards the sound outlet. The front sound tube is cylindrical, and the inner diameter of the front sound tube is less than or equal to the inner diameter of the port of the transition cavity furthest from the speaker unit.

[0017] The present invention also proposes an audio device, including the above-described speaker module.

[0018] This invention's technical solution involves housing the speaker unit within a casing, dividing the casing into a front cavity and a rear cavity, with the sound outlet on the casing connected to the front cavity. This allows the speaker unit to emit sound through the sound outlet during operation. By incorporating an airflow disturbance component in the front cavity, the space occupied by this component is reduced, allowing the resonance peak to shift towards the mid-to-high frequencies, thus improving the mid-to-high frequency response. Furthermore, the airflow disturbance component in the front cavity causes the sound waves generated by the speaker to drive its movement, thereby disturbing the air in the front cavity. This increases the pressure within the front cavity and raises the airflow velocity and sound wave speed, thereby lowering the low-frequency resonance of the speaker unit's vibration system and improving bass response. Therefore, by incorporating the airflow disturbance component in the front cavity, the bass and mid-to-high frequency performance of the speaker module can be simultaneously enhanced within the limited space of the speaker unit and front cavity, maximizing the speaker unit's performance, improving sound quality, and providing a better audio experience for the user. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of one embodiment of the present invention when the audio device is an earphone;

[0021] Figure 2This is a schematic diagram of another embodiment of the present invention when the audio device is an earphone;

[0022] Figure 3 This is a schematic diagram of the structure of an embodiment of the audio device of the present invention, which is an augmented reality device or a virtual reality device;

[0023] Figure 4 This is a schematic diagram of one embodiment of the airflow disturbance component in the audio device of the present invention, which is a fan-blade structure.

[0024] Explanation of icon numbers:

[0025] 100 case 101 Anterior cavity 1011 transition cavity 1012 front sound tube 102 Postcavitary 103 Sound hole 200 airflow disturbance components 210 bushing 220 fan blades 300 Connector 310 Mounting base 320 Mounting shaft section 400 Fixed shaft

[0026] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0030] This invention proposes a speaker module.

[0031] In the embodiments of the present invention, please refer to the reference. Figures 1 to 3The speaker module includes a speaker unit, a housing 100, and an airflow disturbance component 200. The speaker unit is located inside the housing 100, which divides the housing 100 into a front cavity 101 and a rear cavity 102. The housing 100 also has a sound outlet 103, which communicates with the front cavity 101. The airflow disturbance component 200 is located inside the front cavity 101.

[0032] A loudspeaker driver is a common electroacoustic transducer used to convert electrical energy into sound energy. Audio electrical energy, through electromagnetic, piezoelectric, or electrostatic effects, causes its cone or diaphragm to vibrate and resonate with the surrounding air, producing sound. The loudspeaker driver is typically housed within a housing 100, which divides the housing 100 into a front cavity 101 and a rear cavity 102. As a crucial component of the loudspeaker, the housing 100 plays a vital role in protecting the loudspeaker driver and also influences the sound quality to some extent. Once the loudspeaker's position within the housing 100 is determined, the spaces of the front cavity 101 and the rear cavity 102 are also fixed. If the front cavity 101 is too large, the capacitance in the oscillation circuit increases, resulting in a lower resonant frequency and reduced mid-to-high frequency response. In this invention, by incorporating an airflow disturbance component 200 within the front cavity 101, the airflow disturbance component 200 occupies a certain amount of space, thus reducing the size of the front cavity 101. According to the formula for calculating the resonant angular frequency ω0, the reciprocal of ω0 is equal to the square root of the product of L and C, where L is the inductance and C is the capacitance. When the volume of the front cavity 101 decreases, the capacitance decreases, which in turn increases the resonant angular frequency, meaning the resonant peak shifts to the mid-to-high frequency range, thereby improving the mid-to-high frequency response.

[0033] Furthermore, the airflow disturbance component 200 can agitate the airflow, thereby increasing the air pressure in the front cavity 101, increasing the air velocity and the speed of sound waves, which can reduce the low-frequency resonance of the vibration system in the speaker driver, thus improving the bass response. Specifically, the airflow disturbance component 200 refers to a component that can agitate the airflow. The airflow disturbance component 200 can be a fan blade structure or a paper structure, as long as it can achieve the effect of agitating the airflow when it moves. The agitation force of the airflow disturbance component 200 can be achieved by the driving force of sound waves, or it can be driven by other driving components.

[0034] To save power costs and reduce noise interference generated during drive, it is preferable to use the propulsive force of sound waves during diaphragm vibration to drive the airflow disturbance component 200 to agitate the airflow. The number of airflow disturbance components 200 can be one or at least two. The number of airflow disturbance components 200 is negatively correlated with their size; that is, if the size of the airflow disturbance component 200 is large, fewer airflow disturbance components 200 can be used; if the size of the airflow disturbance component 200 is small, more airflow disturbance components 200 can be used. It should be noted that the number of airflow disturbance components 200 should only be sufficient to ensure that the noise generated by these components when agitating the airflow does not affect the sound of the speaker module itself. The airflow disturbance component 200 can be positioned near the sound outlet 103 or near the speaker unit, as long as the sound waves generated by the speaker unit during operation can drive the airflow disturbance component 200 to agitate the airflow, thereby improving the bass response.

[0035] The technical solution of this invention involves housing the speaker unit within a housing 100, dividing the housing 100 into a front cavity 101 and a rear cavity 102. The sound outlet 103 on the housing 100 communicates with the front cavity 101, allowing the speaker unit to emit sound through the sound outlet 103 during operation. By incorporating an airflow disturbance component 200 in the front cavity 101, the component occupies a certain amount of space, thereby reducing the space within the front cavity 101. This allows the resonance peak to shift towards the mid-to-high frequencies, improving the mid-to-high frequency response. Furthermore, by including the airflow disturbance component 200 in the front cavity 101, the sound waves generated by the speaker during operation drive the airflow disturbance component 200, thereby disturbing the air in the front cavity 101. This increases the pressure in the front cavity 101 and raises the airflow velocity and sound wave speed, thereby reducing the low-frequency resonance of the speaker unit's vibration system and improving the bass response. Therefore, by setting the airflow disturbance component 200 in the front cavity 101, the bass and mid-high frequency performance of the speaker module can be enhanced simultaneously under the premise of limited speaker unit and front cavity 101 space, maximizing the working efficiency of the speaker unit, improving the sound quality, and making the user's sound quality experience better.

[0036] Specifically, please refer to the following: Figures 1 to 3 In one embodiment, the airflow disturbance element 200 is a fan blade structure device.

[0037] By setting the airflow disturbance component 200 as a fan blade structure device, the fan blade structure device rotates regularly under the action of sound waves, thereby achieving the effect of worm gear pressurization on the front cavity 101, increasing the airflow speed and the speed of sound waves, thereby reducing the low-frequency resonance frequency of the vibration system in the speaker unit and improving the bass response.

[0038] Furthermore, such as Figure 1 As shown, in one example, the rotating shaft of the fan blade structure is parallel to or coincides with the center line of the sound outlet 103.

[0039] By setting the rotating shaft of the fan blade structure device parallel to or coinciding with the centerline of the sound outlet 103, the fan blade structure device can be easily assembled and disassembled. Specifically, the fan blade structure device can be installed in the front cavity 101 along the centerline direction of the sound outlet 103.

[0040] To achieve a more stable installation of the fan blade structure, based on the scheme that the rotating shaft of the fan blade structure is parallel to or coincides with the centerline of the sound outlet 103, the speaker module also includes a connecting frame 300. This connecting frame 300 includes a mounting base 310 and a mounting shaft section 320. The mounting base 310 is connected to the cavity wall of the front cavity 101; the mounting shaft section 320 is connected to the mounting base 310, and the axis of the mounting shaft section 320 is parallel to or coincides with the centerline of the sound outlet 103; the fan blade structure is fitted over the mounting shaft section 320. This configuration ensures a more stable connection for the fan blade structure, and the connecting frame 300 further reduces the volume of the front cavity 101, thereby further improving the mid-to-high frequency response.

[0041] Specifically, the mounting base 310 can be disc-shaped, rectangular block-shaped, or rod-shaped, as long as it can achieve the effect of connecting with the cavity wall of the front cavity 101. The mounting base 310 can be bonded, welded, or integrally formed with the cavity wall of the front cavity 101, thereby reducing the operation steps of installing the mounting base 310 to the cavity wall of the front cavity 101 and improving installation efficiency. Of course, the mounting base 310 can also be connected to the cavity wall of the front cavity 101 in a detachable manner, such as by screw connection, snap connection, or magnetic connection. This makes the mounting base 310 easy to remove from the cavity wall of the front cavity 101, thereby facilitating the replacement of the connecting bracket.

[0042] The mounting base 310 and the mounting shaft section 320 can be connected as a single unit through bonding, welding, or integral molding, thereby ensuring the stability of the connection and achieving stable installation of the fan blade structure. Alternatively, in other embodiments, the mounting base 310 and the mounting shaft section 320 can be connected using threaded connections, pin connections, or other detachable methods, facilitating the assembly and disassembly of the mounting shaft section 320.

[0043] Furthermore, in order to avoid excessive noise when the fan blade structure rotates, and in order to enable the fan blade structure to rotate smoothly under the action of sound waves, the fan blade structure is provided with mounting holes for mounting to the mounting shaft section 320, and bearings can be installed in the mounting holes.

[0044] This design avoids severe wear between the fan blade structure and the mounting shaft 320 that supports it, and also prevents excessive noise caused by friction. Furthermore, it reduces friction when the fan blade structure rotates, which facilitates rotation under the influence of sound waves generated by the speaker unit, thereby ensuring that the speaker module in this invention can achieve the effect of improving bass sound quality.

[0045] In another example, such as Figure 2 or Figure 3 As shown, the rotating shaft of the fan blade structure is perpendicular to the center line of the sound outlet 103.

[0046] With this configuration, the fan blades 220 of the fan blade structure device can rotate more easily under the driving force of sound waves, thereby further ensuring that the fan blade structure device provides a stable driving force to increase the airflow speed and the speed of sound waves, and thus achieve better bass sound quality. Specifically, in order to achieve the effect of stable installation of the fan blade structure device, a fixed shaft 400 can be directly protruded on the cavity wall of the front cavity 101, and the fan blade structure device can be directly sleeved on the fixed shaft 400.

[0047] Furthermore, in order to avoid excessive noise when the fan blade structure rotates, and in order to enable the fan blade structure to rotate smoothly under the action of sound waves, the fan blade structure is provided with mounting holes for mounting to the fixed shaft 400, and bearings can be installed in the mounting holes.

[0048] This design avoids severe wear between the fan blade structure and the fixed shaft 400 that supports it, and also prevents excessive noise caused by friction. Furthermore, it reduces the friction when the fan blade structure rotates, which facilitates its rotation under the influence of the sound waves generated by the speaker unit, thereby ensuring that the speaker module in this invention can achieve the effect of improving bass sound quality.

[0049] Furthermore, in one example, please refer to the reference. Figures 1 to 3 As shown, one fan blade structure device is provided.

[0050] The more fan blades there are, the larger the space they occupy, which is beneficial for improving mid-to-high frequency sound. Simultaneously, more fan blades cause airflow disturbance, increasing sound wave speed and thus improving bass response. However, the rotating fan blades themselves generate noise; a larger number of fan blades results in greater noise, potentially affecting the sound quality of the speaker unit itself. In this example, using only one fan blade ensures good improvement in mid-to-high and low frequency response while avoiding the noise generated by the fan blades affecting the final sound quality.

[0051] In one example, please refer to the reference. Figure 1 and Figure 2 The front cavity 101 includes a transition cavity 1011 and a front sound tube 1012. The transition cavity 1011 is located close to the speaker unit. One end of the front sound tube 1012 is connected to the transition cavity 1011, and the other end is connected to the sound outlet 103. The fan blade structure device is located at the opening where the front sound tube 1012 connects to the transition cavity 1011.

[0052] By placing the fan blade structure at the opening where the front sound tube 1012 connects to the transition cavity 1011, it is beneficial to further accelerate the sound waves from the transition cavity 1011 to the front sound tube 1012, thereby facilitating the sound to be transmitted from the sound outlet 103.

[0053] Specifically, the cavity shape of the transition cavity 1011 can be cubic, cylindrical, or conical, etc. The shape of the front sound tube 1012 can also be cubic, cylindrical, or conical, etc. The inner diameter of the front sound tube 1012 can be smaller or larger than the inner diameter of the transition cavity 1011.

[0054] In one example, please refer to the reference. Figure 1 and Figure 2 The front sound tube 1012 is cylindrical, and the inner diameter of the transition cavity 1011 gradually decreases from the side closest to the speaker unit to the sound outlet 103. The front sound tube 1012 is cylindrical, and the inner diameter of the front sound tube 1012 is less than or equal to the inner diameter of the port of the transition cavity 1011 away from the speaker unit.

[0055] This configuration provides sufficient installation space within the housing 100 for the speaker unit to be installed. Furthermore, it allows the sound emitted by the speaker unit to be concentrated along the transition cavity 1011 to the front sound tube 1012, and then, through the concentrating and guiding effect of the front sound tube 1012, the sound is emitted more concentratedly from the sound outlet 103, thereby improving the sound quality of the speaker module.

[0056] Specifically, please refer to the following: Figure 1 , Figure 2 as well as Figure 4 The fan blade structure includes a bushing 210 and a fan blade 220. The bushing 210 is used to fit around the mounting shaft section 320 of the connecting frame 300 mentioned above, or the bushing 210 is used to fit around the fixed shaft 400 mentioned above. There are multiple fan blades 220, which are arranged in a ring and connected to the side wall of the bushing 210.

[0057] By setting multiple fan blades 220, and having these multiple fan blades 220 arranged in a ring and connected to the side wall of the bushing 210, the degree of airflow disturbance of the fan blade structure can be further improved, thereby achieving a better worm gear boosting effect and ensuring a better bass sound output effect.

[0058] Furthermore, a dustproof mesh (not shown) is provided at the sound outlet 103.

[0059] By installing a dustproof screen at the sound outlet 103, the risk of external debris entering the front cavity 101 through the sound outlet 103 and obstructing the airflow disturbance component 200 can be reduced. This ensures that the airflow disturbance component 200 can stably disturb the airflow and stably improve the bass sound quality.

[0060] This invention also proposes an audio device, please refer to the reference. Figures 1 to 3 The audio device includes a speaker module, the specific structure of which is described in the above embodiments. Since this audio device employs all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here. The audio device can be a speaker, headphones, augmented reality device, or virtual reality device, etc.

[0061] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the inventive concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A speaker module, characterized by include: loudspeaker unit; A housing, wherein the speaker unit is disposed within the housing, and the housing is divided into a front cavity and a rear cavity; the housing also has a sound outlet, which communicates with the front cavity; and An airflow disturbance component is disposed within the front cavity; the airflow disturbance component is a fan-blade structure device.

2. The speaker module of claim 1, wherein, The rotating shaft of the fan blade structure is parallel to or coincides with the center line of the sound outlet.

3. The speaker module of claim 2, wherein, The speaker module further includes a connecting bracket, which comprises: Mounting base, the mounting base being connected to the cavity wall of the front cavity; and The mounting shaft section is connected to the mounting base, and the axis of the mounting shaft section is parallel to or coincides with the center line of the sound outlet hole; the fan blade structure device is sleeved on the mounting shaft section.

4. The speaker module of claim 1, wherein, The rotating shaft of the fan blade structure is perpendicular to the centerline of the sound outlet.

5. The speaker module of claim 4, wherein, The cavity wall of the front cavity is provided with a fixed shaft, which is perpendicular to the center line of the sound outlet hole, and the fan blade structure device is sleeved on the fixed shaft.

6. The speaker module of claim 1, wherein, One fan blade structure device is provided.

7. The speaker module of any one of claims 1 to 6, wherein, The anterior cavity includes: Transition cavity; and The front sound tube has a transition cavity located close to the speaker unit. One end of the front sound tube is connected to the transition cavity, and the other end is connected to the sound outlet. The fan blade structure is located at the opening where the front sound tube connects to the transition cavity.

8. The speaker module of claim 7, wherein, The inner diameter of the transition cavity gradually decreases from the side closest to the speaker unit towards the sound outlet. The front sound tube is cylindrical, and the inner diameter of the front sound tube is less than or equal to the inner diameter of the port of the transition cavity furthest from the speaker unit.

9. An audio device, comprising: Includes the speaker module as described in any one of claims 1 to 8.

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