Speaker box

The present invention provides a speaker box, includes a housing having an accommodating space, a speaker unit accommodated in the accommodating space of the housing, and two sound channels formed in the accommodating space. The speaker unit includes a diaphragm that vibrates for generating sound. The diaphragm divides the accommodating space into a front sound cavity and a rear cavity. The sound channel communicates the front sound cavity with an outside. The sound channel is connected with the front sound cavity to form a front cavity. The sound channel respectively communicates the front sound cavity with the outside. The two sound channels are symmetrically disposed on opposite sides of the speaker unit respectively.

TECHNICAL FIELD

The present disclosure relates to an electro acoustic field, and in particular to a speaker box for portable electronic products.

BACKGROUND

With the advent of mobile internet era, the number of smart mobile devices continues to rise. Among many mobile devices, mobile phones are undoubtedly the most common and portable mobile terminal devices. At present, functions of the mobile phones are extremely diverse, one of which is high-quality music functions, so a speaker box for playing sound is widely used in today's smart mobile devices.

The speaker box in the prior art comprises a housing having an accommodating space, a speaker unit accommodated in the housing, and a sound channel formed in the accommodating space. The speaker unit comprises a diaphragm that vibrates for generating sound. The diaphragm divides the accommodating space into a front sound cavity and a rear cavity. The sound channel communicates with the front sound cavity with an outside. The sound channel communicates with the front sound cavity to form a front cavity.

However, in the prior art, the sound channel of the speaker box is designed to be single, and a structure for emitting sound is formed on one side of the speaker unit. Since airflow of the front sound cavity needs to enter the sound channel from the same side of the speaker unit, airflow in the front cavity is easily unbalanced, which cause the swing amplitude of the diaphragm to be excessive during vibration, which affects reliability and acoustic performance of the speaker box.

Therefore, it is necessary to provide a speaker box to solve above technical problems.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENT

The technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the drawings in the embodiments of the present disclosure. It is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without creative efforts are within the scope of the present disclosure.

As shown inFIGS. 1-2, the present disclosure provides a speaker box100. The speaker box100includes a housing1and a speaker unit2.

As shown inFIGS. 1-3, the housing1includes an accommodating space10. The housing1may be integrally formed as one part or assembled with separate parts. In the embodiment, the housing1is assembled with separate parts. Specifically, the housing1includes an upper cover11, and a lower cover12covered on the upper cover11to cooperatively form the accommodating space10.

The upper cover11includes an annular side wall111, a separating plate112connected with an inner side of the side wall111, and an upper cover plate113disposed on an end of the side wall111and spaced apart from the separating plate112. An interval between the upper cover plate113and the separating plate forms sound channels114.

Furthermore, at least two sound holes1111penetrating through the side wall111are disposed on the side wall111. The separating plate112comprises an accommodating hole1121penetrating through the separating plate112. A side of the upper cover plate113close to separating plate112is recessed to form two retaining grooves1131. Of course, the upper cover11may be integrally formed as one part.

In the embodiment, the speaker box100is of a rectangular shape. The side wall111comprises two long side walls1112parallel to a long axis and two short side walls1113parallel to a short axis. The two long side walls1112are disposed opposite to each other. The two short side walls1113are disposed opposite to each other. It should be noted that the shape of the speaker box is not limited to this.

The speaker unit2is accommodated in the accommodating space10of the housing1. The speaker unit2divides the accommodating space10into a front sound cavity3and a rear cavity101.

In the embodiment, the speaker unit2includes a diaphragm21that vibrates for generating sound. The diaphragm21divides the accommodating space10into the front sound cavity3and a rear cavity101. To be specific, the speaker unit2is clamped and fixed in the accommodation hole1121. And an interval between the diaphragm21and the upper cover plate113is formed to produce the front sound cavity3.

The lower cover12is fixed on another end of the side wall111and spaced apart from the separating plate112. The lower cover12and the upper cover plate113are disposed on opposite sides of the side wall111. The lower cover12, the side wall111, the separating plate112, and the speaker unit2are enclosed together to form the rear cavity101. The rear cavity101is configured for improving low frequency acoustic performance of the speaker box100.

The upper cover plate113is disposed on the side wall111and is spaced apart from the separating plate112to form the sound channels114. That is, the upper cover plate113, the side wall111, and the separating plate112are enclosed together to form the sound channels114.

The sound channels114communicate the front sound cavity3with the outside, and the sound channels114communicate with the front sound cavity3to form a front cavity102. The sound channels114form a side sounding structure.

In the embodiment, the speaker box100has two sound channels114. The two sound channels respectively communicate the front sound cavity with the outside. To be specific, the two sound channels114respectively communicate with the two sound holes1111disposed on the side wall111, thus, the front sound cavity3communicates with the outside.

Furthermore, the two sound holes1111are disposed on one of the long side walls1112, which realizes side sound of the speaker box100and facilitates an installation structure design on a terminal. Further, such structure maximizes a sound guiding area of the sound channels114and improves a sounding effect.

The two sound channels114are respectively symmetrically disposed on opposite sides of the speaker unit2, which forms a symmetric distribution structure of double sound channels. Thus, airflow in the front cavity102is well balanced, an amplitude of oscillation of the diaphragm21during a vibration process is effectively suppressed, and reliability of the speaker box100is improved. In addition, an arrangement of the two sound channels114makes sounding airflow of the front sound cavity3smoother, thereby improving an acoustic performance of the speaker box100.

To be specific, portions of the separating plate112disposed on the opposite sides of the speaker unit2are respectively spaced apart from the upper cover plate113to form the two sound channels114.

The two retaining grooves1131of the upper cover plate113are respectively disposed corresponding to the two sound channels114, which effectively increases a sounding area of the sound channels114, makes the sounding airflow of the front sound cavity3smoother, and improves the acoustic performance of the speaker box100.

Compared with the prior art, in the speaker box of the present disclosure, the upper cover plate of the upper cover is spaced apart from the separating plate such that portions of the separating plate disposed on opposite sides of the speaker unit and the upper cover are enclosed together to form the two sound channels. The speaker unit is spaced apart from the upper cover plate to form the front sound cavity, and the two sound channels are symmetrically disposed on opposite sides of the speaker unit and respectively communicate with the front sound cavity, which realizes the side sounding structure of the double sound channels. Symmetrical distribution design of the two sound channels makes the airflow in the front cavity more balanced, which effectively suppress the amplitude of the oscillation of the diaphragm during the vibration process, and improves the reliability of the speaker box. In addition, the structure of the two sound channels makes the sounding airflow of the front sound cavity smoother and improves the acoustic performance of the speaker box.

The above is only the embodiments of the present disclosure, and it should be noted that those skilled in the art can make improvements without departing from the concept of the present disclosure, which are all within the scope of the present disclosure.