CN204836566U - Multi -functional speaker module and use its electron terminal equipment - Google Patents

Abstract

The utility model discloses a multifunctional loudspeaker module and electronic terminal equipment using the same, which relates to the technical field of electro-acoustic products, and includes a shell, and a loudspeaker unit is accommodated in the outer shell, and the loudspeaker unit covers the whole module The cavity is divided into two cavities, the front acoustic cavity and the rear acoustic cavity, and also includes a passive radiation unit, the passive radiation unit is installed on the shell at the position of the rear acoustic cavity, and the passive radiation unit includes an edge fixed on the The passive diaphragm on the casing and the counterweight fixed in the middle of the passive diaphragm. The multifunctional loudspeaker module of the utility model and the electronic terminal equipment using it solve the technical problems such as single function of the loudspeaker module and low frequency difference in the prior art. Good, the assembly process is simple, the production efficiency is high, and the production cost is low; and the occupied space is small, which can meet the needs of the miniaturization development of electronic terminal equipment.

Description

Multifunctional loudspeaker module and electronic terminal equipment using it

technical field

The utility model relates to the technical field of electroacoustic products, in particular to a multifunctional loudspeaker module and electronic terminal equipment using the same.

Background technique

Electronic terminal equipment usually includes mobile phones, smart watches, tablet computers, and handheld game consoles. With the continuous development of electronic technology, the functions of electronic terminal equipment are becoming more and more powerful, such as language communication, sending and receiving information, multimedia playback, online games, online Chat, video camera, etc. With the continuous increase of functions, there are more and more components in portable electronic devices, such as speaker modules, vibration motors, cameras, microphones, etc., which require more and more space. Due to the single function of each component at present, for example, the speaker module only has the function of loudspeaker playback, so that each component in the electronic terminal equipment is individually packaged and installed independently in the housing of the electronic terminal equipment, occupying space Larger, cannot meet the needs of the continuous miniaturization and development of electronic terminal equipment.

At present, the technical solution that each component is packaged separately and independently installed in the electronic terminal equipment is difficult to provide a larger rear acoustic cavity space for the speaker module, which seriously restricts the improvement of the acoustic performance of the speaker module, resulting in electronic terminal equipment. The sound quality is difficult to meet people's increasingly higher consumption needs. At the same time, the technical solution that each component is individually packaged and independently installed in the electronic terminal equipment also makes the assembly process of the electronic terminal equipment too complicated, resulting in low production efficiency and high production costs.

Utility model content

In view of the above defects, the first technical problem to be solved by the utility model is to provide a multifunctional speaker module, which has the functions of a speaker and a vibration motor at the same time, has good low frequency performance, and can effectively improve the performance of portable electronic devices. Improve the sound quality, and at the same time simplify the assembly process of electronic terminal equipment, improve the production efficiency of electronic terminal equipment, and reduce its production cost.

Based on the same inventive concept, the second technical problem to be solved by this utility model is to provide an electronic terminal device with high sound quality, less internal parts and small space occupation, which can meet the needs of miniaturization development , At the same time, the assembly process is simple, the production efficiency is high, and the production cost is low.

For solving above-mentioned first technical problem, the technical scheme of the utility model is:

A micro-speaker, comprising a shell, the shell contains a speaker monomer, the speaker monomer divides the entire module inner cavity into two cavities, a front acoustic cavity and a rear acoustic cavity, and also includes a passive radiation unit, the The passive radiation unit is installed on the housing at the position of the rear acoustic cavity, and the passive radiation unit includes a passive diaphragm whose edge is fixed on the housing and a counterweight fixed in the middle of the passive diaphragm.

Wherein, the counterweight is fixed on the side of the passive diaphragm located outside the shell.

Wherein, the module has a rectangular structure, and the loudspeaker unit and the passive radiation unit are respectively arranged at two ends of the module.

Wherein, the shell includes a first shell and a second shell combined together, the speaker unit and the first shell enclose the front acoustic cavity, and the speaker unit and the first shell The body and the second housing jointly enclose the rear acoustic cavity.

Wherein, the passive radiation unit is fixed on the second casing.

Wherein, a steel sheet is combined at a position corresponding to the loudspeaker unit on the first casing, and a plurality of sound holes are evenly distributed on the steel sheet.

In order to solve the above-mentioned second technical problem, the technical solution of the utility model is:

An electronic terminal device, wherein the above-mentioned multifunctional speaker module is installed, and a high-pass filter is electrically connected between the sound wave signal source circuit of the electronic terminal device and the multifunctional speaker module.

Wherein, the high-pass filter includes a capacitor C connected in series with one end of the signal source circuit, and also includes a resistor R, and the resistor R is connected in parallel with the circuit connected in series with the capacitor C and the signal source circuit; The multifunctional loudspeaker module is connected in parallel with the resistor R.

After adopting above-mentioned technical scheme, the beneficial effect of the utility model is:

Because the multifunctional loudspeaker module of the present invention includes a shell, the shell contains a speaker monomer, and a passive radiation unit is installed on the shell at the position of the sound cavity behind it, and the passive radiation unit includes a passive diaphragm whose edge is fixed on the shell, A counterweight is fixed in the middle of the passive diaphragm. The passive radiation unit does not need to be connected with any voice coil and circuit, it only vibrates passively under the action of the airflow generated when the speaker unit instigates the air to produce sound, and achieves the effect of sound generation. Since the passive radiation unit also includes a counterweight, it is When it is vibrated, it will produce a certain vibration feeling. The resonance frequency of the passive radiation unit is different from that of the loudspeaker unit, and its resonance frequency is lower (as shown in Figure 4). When the frequency reaches the resonance frequency of the passive radiation unit, the passive radiation unit will The vibration sense reaches the maximum, and the module can be used as a vibration motor at this time; at the same time, the passive radiation unit increases the compliance of the acoustic cavity behind the module, improves the low frequency of the module, and enables the module to obtain better low frequency performance, thereby improving improve the sound quality of the module. It can be seen that the multifunctional speaker module of the utility model not only has the function of a speaker, but also has the function of a vibration motor, and can replace two important functional parts in the electronic terminal equipment. In line with the development trend of globalization, it also simplifies the assembly process of electronic terminal equipment, improves the production efficiency of electronic terminal, and reduces its production cost.

Since the above-mentioned multifunctional loudspeaker module is installed in the electronic terminal equipment of the present utility model, and a high-pass filter is electrically connected between the sound wave signal source circuit of the electronic terminal equipment and the multifunctional loudspeaker module. The high-pass filter can filter out low-frequency signals near the resonant frequency of the passive radiating unit, which can ensure that the music will not be affected by the resonant frequency of the passive radiating unit, ensuring the quality of music playback, and at the same time enhancing the bass, making electronic terminal equipment Has better bass. At the same time, the electronic terminal equipment has few internal components and occupies a small space, which can meet the needs of miniaturization development, and has a simple assembly process, high production efficiency, and low production cost.

To sum up, the multifunctional loudspeaker module of the utility model and the electronic terminal equipment using it solve the technical problems of single function of the speaker module and low frequency difference in the prior art, and the multifunctional speaker module of the utility model and the electronic terminal equipment using it The electronic terminal equipment has good bass effect, simple assembly process, high production efficiency, and low production cost; and occupies a small space, which can meet the needs of miniaturized development of electronic terminal equipment.

Description of drawings

Fig. 1 is the exploded structure schematic diagram of the utility model multi-function loudspeaker module;

Fig. 2 is the composite diagram of Fig. 1;

Fig. 3 is the A-A line sectional view of Fig. 2;

Fig. 4 is the resonant frequency emulation figure of the utility model multifunctional loudspeaker module;

Fig. 5 is a schematic circuit diagram of the electronic terminal device of the present invention;

In the figure: 10, the first shell, 20, the second shell, 30, the speaker unit, 320, the diaphragm, 322, the dome, 324, the voice coil, 340, the basin frame, 342, the magnet, 344, the Hua Division, 36, shell, 40, passive radiation unit, 42, passive diaphragm, 44, counterweight, 50, steel sheet, 52, sound hole, 60, front acoustic cavity, 62, rear acoustic cavity, 100, signal source circuit , 200, multifunctional speaker module, 300, high-pass filter.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, further set forth the utility model.

The inner side mentioned in this manual refers to the side close to the center of the speaker module, and the outer side refers to the side away from the center of the speaker module; the upper direction mentioned in this manual refers to the direction where the vibration system is installed, and the lower direction refers to the direction where the magnetic direction of the road system.

Embodiment one:

As shown in Fig. 1, Fig. 2 and Fig. 3 together, a multifunctional loudspeaker module is a rectangular structure, including a module casing, and the module casing is composed of a first casing 10 and a second casing 20 combined together , the speaker unit 30 is accommodated in the space enclosed by the first casing 10 and the second casing 20 . The loudspeaker unit 30 divides the entire module inner cavity into two cavities, the front acoustic cavity 60 and the rear acoustic cavity 62. The loudspeaker unit 30 and the first housing 10 jointly form the front acoustic cavity 60. The loudspeaker unit 30 and the first housing 10 and the second housing 20 together form a rear acoustic cavity 62 . The module also includes a passive radiation unit 40 , and the passive radiation unit 40 is installed on the second housing 20 at the position of the rear acoustic cavity 62 . The loudspeaker unit 30 and the passive radiation unit 40 are respectively arranged at two ends of the module.

As shown in FIG. 1 and FIG. 3 , the loudspeaker unit 30 includes a casing 36 , and a vibration system and a magnetic circuit system are accommodated in the casing 36 . The vibration system includes a diaphragm 320 whose edge is fixed on the upper end surface of the shell 36 , a dome 322 fixed at the middle of the upper side of the diaphragm 320 , and a voice coil 324 fixed at the lower side of the diaphragm 320 . The magnetic circuit system includes a basin frame 340 fixed on the inner side of the casing 36. A magnet 342 and a Washer 344 are fixed in the middle of the inner side of the basin frame 340 in sequence. The ends of the coil 342 are located within the magnetic gap. The voice coil 342 generates a constantly changing magnetic field according to the alternating sound wave electric signal passing through its winding, and the voice coil 342 will be subjected to constantly changing attractive and repulsive forces according to the principle that the same pole repels and the opposite pole attracts each other. , so that alternate up and down motions are generated, and the diaphragm 320 and the dome 322 vibrate with the up and down motion of the voice coil 324, thereby instigating the air to produce sound and completing the energy conversion between electroacoustics.

As shown in Fig. 1 and Fig. 3 together, the passive radiation unit 40 includes a passive diaphragm 42 whose edge is fixed on the second housing 20, and the middle part of the passive diaphragm 42 located on one side outside the second housing 20 is fixed with a Weight 44. The passive radiation unit 40 vibrates passively under the action of the airflow generated when the vibration system of the loudspeaker unit 30 instigates the air to produce sound, so as to achieve the function of sound generation and vibration motor.

As shown in Fig. 1, Fig. 2 and Fig. 3 together, a steel sheet 50 is combined at the position corresponding to the loudspeaker unit 30 on the first casing 10, and a plurality of sound holes 52 are evenly distributed on the steel sheet 50, and the vibration system instigates the air The generated sound is radiated from the sound holes 52 to the outside of the module. The steel sheet 50 has a smaller thickness while ensuring the strength of the first housing 10 , which can effectively reduce the height of the speaker module or increase the space of the front acoustic cavity 60 to improve the acoustic performance of the module.

Embodiment two:

As shown in FIG. 5 , an electronic terminal device is installed with the multifunctional loudspeaker module described in the first embodiment. A high-pass filter 300 is integrated in the circuit of the electronic terminal device, and the high-pass filter 300 is electrically connected between the sound wave signal source circuit 100 and the multifunctional speaker module 200 . The high-pass filter 300 includes a capacitor C connected in series with one end of the signal source circuit 100, and a resistor R connected in parallel at both ends of the series circuit formed by connecting the capacitor C and the signal source circuit 100 in series. The multifunctional speaker module 200 connected in parallel across the resistor R. The high-pass filter 300 can filter out low-frequency signals near the resonant frequency of the passive radiating unit 40 (see FIG. 1 ), which can ensure that the music will not be affected by the resonant frequency of the passive radiating unit 40 when playing music. The bass is enhanced, making electronic terminal equipment have a better bass effect.

The utility model adds the function of a vibration motor to the loudspeaker module by adding a passive radiation unit at the rear sound cavity of the module, and at the same time improves the low-frequency performance of the module so that it has a better bass effect. Moreover, this module integrating the functions of speakers and vibration motors also effectively simplifies the assembly process of electronic terminal equipment, improves its production efficiency, reduces its production cost, and saves the internal space of electronic terminal equipment, making it suitable for small design requirements.

The above-mentioned embodiment of the utility model is only an illustration of the technical solution of adding a passive radiation unit at the rear acoustic cavity of the utility model. The structure of the speaker module is not limited to the above-mentioned structure, and the structure of the speaker unit is also not limited. Limited to the above-mentioned structure, the technical solution of the utility model can be applied to any kind of loudspeaker module, and those skilled in the art can apply the technical solution of the utility model to other structures without any creative work according to the description of the above-mentioned embodiment In the speaker module, no matter whether the structure of the speaker module and the speaker unit is the same as that of the above embodiment, as long as a passive radiation unit is added at the rear acoustic cavity of the module to increase the function of the module and improve the low-frequency performance of the module Products that simplify the assembly process of electronic terminal equipment and meet miniaturization design all fall within the protection scope of the present utility model.

The utility model is not limited to the above-mentioned specific implementation manners, and various transformations made by those skilled in the art starting from the above ideas without creative work all fall within the scope of protection of the utility model.

Claims (8)

1. A multifunctional speaker module, including a shell, the shell contains a speaker unit, and the speaker unit divides the entire module inner cavity into two cavities, a front acoustic cavity and a rear acoustic cavity, and it is characterized in that it also includes A passive radiating unit, the passive radiating unit is installed on the housing located at the position of the rear acoustic cavity, the passive radiating unit includes a passive diaphragm whose edge is fixed on the housing and a passive diaphragm fixed on the passive diaphragm The middle weight block. 2 . The multifunctional speaker module according to claim 1 , wherein the counterweight is fixed on a side of the passive diaphragm located outside the housing. 3 . 3 . The multifunctional speaker module according to claim 2 , wherein the module has a rectangular structure, and the speaker unit and the passive radiation unit are respectively arranged at two ends of the module. 4 . 4. The multifunctional loudspeaker module according to any one of claims 1 to 3, characterized in that, the housing comprises a first housing and a second housing combined together, and the loudspeaker unit and The first casing encloses the front acoustic cavity, and the speaker unit together with the first casing and the second casing encloses the rear acoustic cavity. 5. The multifunctional speaker module according to claim 4, wherein the passive radiation unit is fixed on the second housing. 6. The multifunctional loudspeaker module according to claim 5, wherein a steel sheet is combined with a position corresponding to the speaker unit on the first housing, and a plurality of sounding parts are evenly distributed on the steel sheet. hole. 7. Electronic terminal equipment, characterized in that the multifunctional loudspeaker module according to any one of claims 1 to 6 is installed in the electronic terminal equipment, and the sound wave signal source circuit of the electronic terminal equipment is connected to the multiple A high-pass filter is electrically connected between the functional speaker modules. 8. The electronic terminal device according to claim 7, wherein the high-pass filter includes a capacitor C connected in series with one end of the signal source circuit, and also includes a resistor R, and the resistor R and the capacitor C is connected in parallel with the circuit connected in series with the signal source circuit; the multifunctional loudspeaker module is connected in parallel with the resistor R.