Speaker box
The present disclosure discloses a speaker box including a housing having a receiving space and a speaker unit received in the receiving space. The housing and the speaker unit encloses a front cavity and a rear cavity isolated from each other. A mesh disposed in the rear cavity is configured to enclose a filling chamber with the bottom cover for filling sound-absorbing particles. A steel sheet of the bottom cover includes a protrusion connected to the mesh. And, a damping member opposite to the protrusion is sandwiched between the mesh and the yoke; the speaker box in the present disclosure has higher drop reliability.
1 . A speaker box comprising:
a housing, having a receiving space, comprising:
an upper cover, having a sound channel penetrating thereon; and
a bottom cover enclosing the receiving space with the upper cover;
a speaker unit received in the receiving space and mounted on the upper cover, comprising:
a diaphragm configured to vibrate to generate sound, enclosing a front cavity with the upper cover; and
a yoke spaced apart from the bottom cover;
a mesh fixed to the bottom cover; and
a damping member sandwiched between the mesh and the yoke; wherein
the front cavity is communicated with outside through the sound channel; a rear cavity is enclosed by the speaker unit, the upper cover, and the bottom cover; the rear cavity is divided into an inner cavity and a filling chamber isolated from each other by the mesh;
the bottom cover comprises a body portion having an opening, and a steel sheet inserted into the body portion and covering the opening; the steel sheet comprises a protrusion recessed towards the speaker unit and fixed to the mesh; the damping member is arranged opposite to the protrusion.
2 . The speaker box as described in claim 1 , wherein the mesh is spaced apart from the yoke; a distance between the mesh and the yoke is between 0.1 mm-0.2 mm.
3 . The speaker box as described in claim 2 , wherein a thickness of the damping member is 0.05 mm-0.1 mm greater than the distance between the mesh and the yoke.
4 . The speaker box as described in claim 1 , wherein the protrusion comprises a top wall fixed to the mesh; an area of the top wall is smaller than an area of the damping member.
5 . The speaker box as described in claim 4 , wherein the mesh is glued to the top wall.
6 . The speaker box as described in claim 1 , wherein the body portion comprises a first fixation portion fixed to the upper cover, a second fixation portion fixed to the steel sheet, a central portion connecting the first fixation portion with the second fixation portion, and a third fixation portion extending from the central portion towards the speaker unit; an edge of the mesh is fixed to a surface of the third fixation portion away from the steel sheet.
7 . The speaker box as described in claim 6 , wherein the edge of the mesh is fixed to the third fixation portion by hot-melt adhesive.
8 . The speaker box as described in claim 1 , further comprising a sealing member fixed to the steel sheet and covering a filling hole penetrating the steel sheet.
9 . The speaker box as described in claim 1 , wherein the damping member is made of foam.