Portable loudspeaker box for smart phone

Abstract

The utility model relates to a portable loudspeaker box for a smart phone, comprising a charging module which comprises a shell and a battery arranged in the shell, and a placing area is formed on the surface of the shell; the loudspeaker module is provided with a passive amplifier, the passive amplifier is provided with a sound outlet channel, a horn throat and a horn mouth are formed at the two ends of the sound outlet channel respectively, the diameter of the horn mouth is larger than that of the horn throat, and the horn throat is adjacent to the placement area; the intelligent mobile phone is placed in the placing area, the loudspeaker of the intelligent mobile phone is aligned with the loudspeaker throat of the passive amplifier, sound enters from the loudspeaker throat, passes through the sound outlet channel and exits from the loudspeaker opening, and the small cross section area of the loudspeaker throat limits the passing of air, so that relatively high acoustic impedance is provided; and the pressure is gradually reduced to a lower pressure state and a higher displacement state, so that the sound is loud, passive external playing is realized, the weight of the sound box is reduced, the energy consumption is reduced, and the endurance is improved.

Description

Technical Field

[0001] This invention relates to the field of smart device technology, and more particularly to a portable external speaker for smartphones. Background Technology

[0002] A speaker is a device that converts audio signals into sound. In simpler terms, it refers to a speaker enclosure or subwoofer enclosure that has a built-in power amplifier that amplifies the audio signal before the speaker itself reproduces the sound, making it louder.

[0003] In the prior art, various speakers are designed for different scenarios, such as external Bluetooth speakers and mobile phone clip-on speakers. Chinese patent CN215268638U discloses a portable speaker adapted to a mobile phone. This speaker includes a housing, a speaker module installed within the housing, and sound chambers located on both sides of the speaker module. The housing has a display screen electrically connected to the speaker module, and control buttons for controlling the speaker module's operation. The speaker module and the mobile phone can communicate with each other. The housing and the mobile phone are detachably connected for easy portability. However, this speaker is an active external speaker, the speaker module is relatively heavy, and its display screen consumes a lot of power, resulting in limited battery life.

[0004] Therefore, there is a need to develop a portable external speaker for smartphones to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a lightweight, long-lasting portable external speaker for smartphones.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a portable external speaker for smartphones, comprising:

[0007] A charging module includes a housing and a battery disposed inside the housing, wherein a placement area is formed on the surface of the housing;

[0008] An external speaker module is provided with a passive amplifier. The passive amplifier has a sound output channel. The two ends of the sound output channel form a horn throat and a horn mouth, respectively. The diameter of the horn mouth is larger than the diameter of the horn throat. The horn throat is adjacent to the placement area.

[0009] Furthermore, the sound outlet is shaped like a trumpet.

[0010] Furthermore, the throat of the horn is elliptical in shape, and the mouth of the horn is circular in shape.

[0011] Furthermore, the passive amplifiers are arranged in pairs and staggered to extend the length of the output channel.

[0012] Furthermore, the external speaker module includes a protective shell, which includes a side protective shell and a front protective shell. The side protective shell and the front protective shell, together with the outer shell, form a sealed cavity, and the passive amplifier is located inside the sealed cavity.

[0013] Furthermore, the front protective shell has a first sound hole and a second sound hole, and the passive amplifier is connected to the first sound hole and the second sound hole respectively.

[0014] Furthermore, the first sound hole is located on the side of the front protective shell, penetrating the front protective shell and communicating with the sealed cavity, and the second sound hole is located on the upper surface of the front protective shell, penetrating the front protective shell and communicating with the sealed cavity.

[0015] Furthermore, the external speaker module includes a mesh portion, which is connected to the side protective shell and the outer shell, covering the front protective shell.

[0016] Furthermore, the height of the protective case can be adjusted as needed to align the first sound hole with the smartphone's speaker.

[0017] Furthermore, the charging module is equipped with a Type-C interface, which is used to charge smartphones.

[0018] Compared with existing technologies, the advantages of this utility model are as follows: This utility model is a portable external speaker for smartphones, which is lightweight and has a long battery life. By placing the smartphone in the placement area, the smartphone's speaker is aligned with the speaker throat of the passive amplifier. The sound enters from the speaker throat, passes through the sound channel, and exits from the speaker mouth. The small cross-sectional area of ​​the speaker throat restricts the passage of air, thereby providing a relatively high acoustic impedance. As the sound waves reach the speaker mouth, they gradually depressurize to a state of lower pressure and higher displacement, thereby making the sound louder. This achieves passive external playback, reduces the weight of the speaker, reduces energy consumption, and improves battery life. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0020] Figure 1 This is a three-dimensional structural diagram of a portable external speaker for smartphones according to the present invention;

[0021] Figure 2 for Figure 1The image shows a cross-sectional view of a portable external speaker for a smartphone.

[0022] Figure 3 for Figure 1 The diagram shows an exploded view of the external speaker module of a portable external speaker for smartphones.

[0023] Figure 4 for Figure 3 The diagram shows a passive amplifier structure for a portable external speaker for smartphones.

[0024] In the diagram: 1. Charging module; 2. External speaker module; 10. Placement area; 11. Outer shell; 12. Battery; 13. Coil; 111. Receiving part; 112. Connecting part; 113. Through hole; 21. Protective shell; 22. Passive amplifier; 23. Mesh part; 211. Side protective shell; 212. Front protective shell; 24. Sealed cavity; 213. First sound hole; 214. Second sound hole; 221. Sound outlet; 222. Horn throat; 223. Horn mouth; 3. Type-C interface; 100. Smartphone. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please refer to Figures 1 to 4 This utility model is a portable external speaker for smartphones, which includes a charging module 1 and an external speaker module 2 that is connected to the charging module 1.

[0027] Please refer to Figures 1 to 2 The charging module 1 includes a housing 11, a battery 12 disposed inside the housing 11, and a coil 13 connected to the battery 12. The shape of the housing 11 can be changed according to requirements. In this embodiment, the housing 11 includes a receiving part 111 and a connecting part 112. The receiving part 111 is a rectangular body with a hollow cavity inside. The top is horizontal, forming a placement area 10. The placement area 10 is used to place the smartphone 100. The battery 12 is placed inside the hollow cavity. A through hole 113 is provided on the upper surface of the receiving part 111. The through hole 113 penetrates the receiving part 111 and communicates with the hollow cavity. The coil 13 is installed in the through hole 113 and connected to the battery 12.

[0028] The height of the connecting part 112 is less than the height of the receiving part 111. One end of the connecting part 112 is fixedly connected to the receiving part 111, and the other end extends outward for mounting the external speaker module 2.

[0029] Please refer to Figures 3 to 4 The external speaker module 2 includes a protective shell 21, a passive amplifier 22 installed inside the protective shell 21, and a mesh portion 23 covering the protective shell 21. The bottom of the protective shell 21 is connected to the connecting portion 112, and its top extends vertically upward. Specifically, the protective shell 21 includes a side protective shell 211 and a front protective shell 212. The bottom of the side protective shell 211 is connected to the connecting portion 112, and its top extends vertically upward to connect with the front protective shell 212. The front protective shell 212 is horizontal and L-shaped, and is connected to the side protective shell 211 and the connecting portion 112. The side protective shell 211 and the front protective shell 212 form a sealed cavity 24.

[0030] The front protective shell 212 has a first sound hole 213 and a second sound hole 214. The first sound hole 213 is located on the side of the front protective shell 212, penetrates the front protective shell 212, and communicates with the sealed cavity 24. The second sound hole 214 is located on the upper surface of the front protective shell 212, penetrates the front protective shell 212, and communicates with the sealed cavity 24. The number of the first sound hole 213 and the second sound hole 214 can be changed according to requirements. In this embodiment, there is a pair of first sound holes 213 and second sound holes 214.

[0031] Please refer to Figure 4 The passive amplifier 22 is a hollow tube forming a sound outlet 221. One end of the passive amplifier 22 is open to form a horn throat 222, and the other end is open to form a horn mouth 223. Both the horn throat 222 and the horn mouth 223 are connected to the sound outlet 221. The horn throat 222 is connected to the first tone hole 213, and the horn mouth 223 is connected to the second tone hole 214. The diameter of the horn throat 222 is smaller than the diameter of the horn mouth 223. The sound outlet 221 is horn-shaped, the horn throat 222 is elliptical, and the horn mouth 223 is circular.

[0032] Specifically, there is a pair of passive amplifiers 22, which are connected to the first tone hole 213 and the second tone hole 214 respectively.

[0033] The small cross-sectional area of ​​the horn throat 222 restricts air passage to some extent, thus providing a relatively high acoustic impedance (relative to the free field outside the horn). Therefore, the sound wave pressure in the horn throat 222 is relatively high, and the displacement is small. As the sound waves reach the horn opening 223, they gradually depressurize to a lower pressure (ambient pressure) and higher displacement state, resulting in a louder sound.

[0034] The mesh portion 23 is horizontal and L-shaped, connected to the side protective shell 211 and the connecting portion 112, covering the front protective shell 212, protecting the first sound hole 213 and the second sound hole 214 while avoiding sound blockage.

[0035] In another embodiment, a pair of passive amplifiers 22 are arranged in an alternating manner to extend the length of the output channel 221.

[0036] In another embodiment, the present invention provides a portable external speaker for a smartphone with a Type C interface 3, which is used to charge the smartphone 100.

[0037] Preferably, the height of the protective case 21 can be changed as needed, so that the first sound hole 213 is aligned with the speaker of the smartphone 100 and the Type C interface 3 is aligned with the charging interface of the smartphone 100.

[0038] When using this portable external speaker for smartphones, the smartphone 100 is placed in the placement area 10, and the battery 12 charges the smartphone 100 through the coil 13 or the Type C interface 3. At the same time, the speaker of the smartphone 100 is aligned with the first sound hole 213 and the speaker throat 222, and the smartphone 100 emits sound. The sound enters from the first sound hole 213 and the speaker throat 222, passes through the sound outlet 221, and exits from the speaker mouth 223.

[0039] This invention relates to a portable external speaker for smartphones, characterized by its lightweight design and long battery life. By placing the smartphone in the designated area, with the smartphone's speaker aligned with the speaker throat of a passive amplifier, sound enters from the speaker throat, passes through the sound channel, and exits from the speaker opening. The small cross-sectional area of ​​the speaker throat restricts airflow, thus providing a relatively high acoustic impedance. As sound waves reach the speaker opening, they gradually depressurize to a lower pressure and higher displacement state, resulting in a louder sound. This invention achieves passive external playback, reduces speaker weight, decreases energy consumption, and increases battery life.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A portable external speaker for smartphones, characterized in that, It includes: The charging module (1) includes a housing (11) and a battery (12) disposed inside the housing (11), wherein a placement area (10) is formed on the surface of the housing (11); The external speaker module (2) is equipped with a passive amplifier (22). The passive amplifier (22) has a sound outlet channel (221). The two ends of the sound outlet channel (221) form a horn throat (222) and a horn mouth (223), respectively. The diameter of the horn mouth (223) is larger than the diameter of the horn throat (222). The horn throat (222) is adjacent to the placement area (10).

2. The portable external speaker for smartphones according to claim 1, characterized in that, The sound outlet (221) is horn-shaped.

3. The portable external speaker for smartphones according to claim 1, characterized in that, The horn throat (222) is elliptical in shape, and the horn mouth (223) is circular in shape.

4. The portable external speaker for smartphones according to claim 1, characterized in that, The passive amplifiers (22) are arranged in pairs and staggered to extend the length of the output channel (221).

5. The portable external speaker for smartphones according to claim 1, characterized in that, The external speaker module (2) includes a protective shell (21), which includes a side protective shell (211) and a front protective shell (212). The side protective shell (211) and the front protective shell (212) together with the outer shell (11) form a sealed cavity (24), and the passive amplifier (22) is located in the sealed cavity (24).

6. The portable external speaker for smartphones according to claim 5, characterized in that, The front protective shell (212) has a first sound hole (213) and a second sound hole (214), and the passive amplifier (22) is connected to the first sound hole (213) and the second sound hole (214) respectively.

7. The portable external speaker for smartphones according to claim 6, characterized in that, The first sound hole (213) is opened on the side of the front protective shell (212), and communicates with the sealed cavity (24) through the front protective shell (212). The second sound hole (214) is opened on the upper surface of the front protective shell (212), and communicates with the sealed cavity (24) through the front protective shell (212).

8. The portable external speaker for smartphones according to claim 5, characterized in that, The external module (2) includes a mesh portion (23), which is connected to the side protective shell (211) and the outer shell (11) and covers the front protective shell (212).

9. The portable external speaker for smartphones according to claim 6, characterized in that, The height of the protective case (21) can be adjusted as needed so that the first sound hole (213) is aligned with the speaker of the smartphone (100).

10. The portable external speaker for smartphones according to claim 1, characterized in that, The charging module (1) is provided with a Type C interface (3), which is used to charge the smartphone (100).

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