SPEAKER DEVICE

A speaker device of the invention includes a speaker box, a sound generating module and a damping member. The speaker box includes a main body and a mounting hole formed on the main body, wherein the speaker box includes a front panel, a rear panel and a resonating chamber formed therebetween. The sound generating module is disposed in the mounting hole and extending into the resonating chamber, wherein the sound generating module vibrates back and forth in a vibrating direction to generate sound waves. The damping member is disposed on the front panel and/or the rear panel of the main body, wherein the damping member has an axial direction perpendicular to the vibrating direction. The damping member is rod-shaped and includes a core and an enclosure enclosing the core, the core has a stiffness greater than that of the enclosure.

BACKGROUND OF THE INVENTION

Field of the Invention

The invention relates to a technical field of speaker device, and more particularly to a speaker device provided with damping members on a speaker box.

Description of the Related Art

The speaker device is a device configured to receive audio signals and convert the audio signals into sound waves. The speaker device includes a speaker box and a sound generating module mounted on a front panel of the speaker box. The sound generating module receives the audio signals and generates mechanical vibration in accordance with the audio signals, which causes vibration of air and thus generates sound waves. The sound waves give off and move forwards from the speaker box. For certain speaker devices enhanced in sound (such as mega bass sound), a phase inverted tube is equipped in addition to the speaker box and the sound generating module. Air vibration generated in the phase inverted tube and the speaker box resonate, whereby the sound waves in the speaker box propagate to external environment through the phase inverted tube and overlap with the sound waves originally moving forwards from the speaker box to enhance sound (such as mega bass sound).

As the sound waves are air vibration caused by the mechanical vibration of the sound generating module, the air vibration in the speaker box may cause vibration of the speaker box itself, particular for the speaker device enhanced by mega bass sound. The vibration of the speaker box itself causes additional vibration of air and noise is thus generated.

BRIEF SUMMARY OF THE INVENTION

An object of the present invention is to provide a speaker device solving the problem of noise cause by the vibration of the speaker box itself due to the sound.

The invention provides a speaker device. The speaker device in accordance with an exemplary embodiment of the invention includes a speaker box, a sound generating module and a damping member. The speaker box includes a main body and a mounting hole formed on the main body, wherein the speaker box includes a front panel, a rear panel and a resonating chamber formed therebetween. The sound generating module is disposed in the mounting hole and extending into the resonating chamber, wherein the sound generating module vibrates back and forth in a vibrating direction to generate sound waves. The damping member is disposed on the front panel and/or the rear panel of the main body, wherein the damping member has an axial direction perpendicular to the vibrating direction. The damping member is rod-shaped and includes a core and an enclosure enclosing the core, the core has a stiffness greater than that of the enclosure.

In another exemplary embodiment, the speaker device further includes a plurality of damping members, wherein the mounting hole is formed on the front panel, at least one of the damping members is disposed in vicinity of the front panel, and at least one of the damping members is disposed in vicinity of the rear panel.

In yet another exemplary embodiment, the speaker device further includes at least one holding member extending along the vibrating direction and connects the front panel and the rear panel.

In another exemplary embodiment, the holding member includes a plurality of insertion holes formed at two opposite sides thereof, and one end of the core of the damping member is inserted into the insertion hole.

In yet another exemplary embodiment, the speaker device further includes a phase-inverted tube disposed in the resonating chamber, the speaker box further includes a phase-inverted hole formed on the rear panel, and one end of the phase-inverted tube communicates with the phase-inverted hole.

In another exemplary embodiment, the main body includes a first body and a second body, the first body and the second body have different depth defined by a distance between the front panel and the rear panel, the mounting hole and the phase-inverted hole are formed on the first body, and the other end of the phase-inverted tube is located in the second body.

In yet another exemplary embodiment, the main body further includes two first structural grooves extending along the vibrating direction and formed on two opposite sides of connection of the first body and the second body, whereby the connection of the first body and the second body is neck-shaped.

In another exemplary embodiment, the main body further includes two second structural grooves extending along the vibrating direction and formed at one side of the first body away from the second body.

In yet another exemplary embodiment, the main body further includes two third structural grooves extending along the vibrating direction and formed at one side of the second body away from the first body.

In another exemplary embodiment, connection of the first box and the second box is step-structured, and a center of the first box and a center of the second box is unaligned.

In yet another exemplary embodiment, the damping members are disposed on the front panel and located at two opposite sides of the mounting hole of the first body in such a manner that each side thereof is provided with at least one of the damping members, the damping members are disposed on the rear panel and located at two opposite sides of the phase-inverted hole in such a manner that each side thereof is provided with at least one of the damping members.

In another exemplary embodiment, at least one of the damping members is disposed on one side of the front panel at the second body away from the mounting hole.

In yet another exemplary embodiment, the speaker box further includes at least one mounting groove formed on the front panel and/or the rear panel and extending along a direction perpendicular to the vibrating direction, the damping member is disposed in the mounting groove.

In another exemplary embodiment, the speaker box further includes a plurality of engaging tabs disposed in the mounting groove, the damping member further includes a plurality of limiting flanges disposed on the enclosure, the enclosure engages the engaging tabs in an axial constrained manner that each of the engaging tabs is clamped by two of the limiting flanges.

As the speaker box is provide with damping members, the damping members are capable of reducing the vibration of the speaker box and even completely eliminating it when the sound waves generated in the resonating chamber of the speaker box, whereby the additional noises caused by the vibration of the speaker box are prevented.

DETAILED DESCRIPTION OF THE INVENTION

Referring toFIGS.1,2and3, an embodiment of a speaker device of the present invention is disclosed. The speaker device1of the present invention includes a speaker box10, a sound generating module20, a plurality of damping members, a plurality of holding members40and a phase-inverted tube50. The sound generating module20is disposed at one side of the speaker box10. The damping members30are disposed at a plurality of positions of the speaker box10. Each of the holding member40connects two damping members30to increase stiffness of the connection structure. The phase-inverted tube50is disposed in the speaker box10for enhancement of sound (such as mega bass sound).

Referring toFIGS.4,5and6, the speaker box10includes a main body11, a mounting hole12and a phase-inverted hole13. The main body11is assembled by a front panel11aand a rear panel11b. A resonating chamber11cis formed between the assembled front panel11aand the rear panel11b. The main body11includes a first body111and a second body112. The first body111and the second body112have chambers communicated with each other and thus forming the resonating chamber11c.

The first body111and the second body112are equally-sized in width, but the first body111has a depth greater than that of the second body112, whereby connection of the first body111and the second body112is step-structured, and centers of the first body111and the second body112are unaligned. The center of the second body112has a position higher than that of the center of the first body111. The aforementioned depth is defined as a distance between the front panel11aand the rear panel11b. The second body112has a length greater than that of the first body111. The portion of the front panel11acorresponding to the second body112is higher than the portion of the front panel11acorresponding to the first body111, whereby the front panel11ais step-structured. Similarly, the portion of the rear panel11bcorresponding to the second body112is higher than the portion of the rear panel11bcorresponding to the first body111, whereby the rear panel11bis step-structured.

The speaker body11further includes two first structural grooves113, two second structural grooves114and two third structural grooves115. The first structural grooves113are curved in cross section and formed at the connection of the first body111and the second body112, whereby the connection of the first body111and the second body112is neck-structured. The second structural grooves114are curved in cross section and formed at one side of the first body111away from the second body112. The third structural grooves115are curved in cross section and formed at one side of the second body112away from the first body111. The first structural grooves113formed at the connection of the first body111and the second body112, and the second structural grooves114and the third structural grooves115are formed at two opposite sides of the main body11.

The mounting hole12is formed on a portion of the front panel11acorresponding to the first body111, and the phase inverted tube13is formed on a portion of the rear panel11bcorresponding to the first body111. The sound generating module20is disposed in the mounting hole12and extends to the resonating chamber11c. Current flows through a coil to move a diaphragm forward and backward along a vibrating direction L perpendicular to the front panel11a, thereby generating sound waves. The sound waves give off from the main body11and move forward. The sound waves in the speaker box10propagate through the phase-inverted tube50and give off from the phase-inverted hole13to an external environment. The sound waves from the phase-inverted hole13overlaps the sound waves originally moving forwards from the speaker box10to enhance sound (such as mega bass sound).

The phase-inverted tube50extend across the first body111and the second body112. One end of the phase-inverted tube50is communicated with the phase-inverted hole13, and the other end of the phase-inverted tube50is located in the second body112. The phase-inverted tube50has a horizontal section51and an inclined section52, wherein the horizontal section51is located in the second body112, and the inclined section52extends from the second body112to the first body111and communicates with the phase-inverted hole13. A horn structure is formed at the end of the phase-inverted tube50at a surface of the second body112.

The damping members30are disposed at the front panel11aand/or the rear panel11b. The damping members30has an axial direction perpendicular to the vibrating direction L. Two mounting grooves116are formed on the front panel11a, and each side of the mounting hole12is provided with one mounting groove116. Two mounting grooves116are formed on the rear panel11b, and each side of the phase-inverted hole13is provided with one mounting groove116. The mounting groove116has a curved cross section and extend along a direction perpendicular to the vibrating direction L. A plurality of engaging tabs117are disposed in the mounting groove116. The damping member30is positioned in the mounting groove116through the engagement of the damping member30with the engaging tabs117.

Referring toFIG.7, the damping member30is rod-shaped, and includes a core31and an enclosure32enclosing the core31. The core31is a metal rod, and the enclosure32is made of plastic material. The core31has a stiffness greater than that of the enclosure32. A plurality of limiting flanges32is disposed at an outer peripheral surface of the enclosure32. The limiting flanges32are annular. The damping members30are disposed in the mounting groove116in such a manner that the engaging tabs117engage an outer peripheral surface of the enclosure32, and the adjacent limiting flanges32aclamp the engaging tabs117, whereby the damping member30is constrained by the engaging tabs117and the limiting flanges32ain three orthogonal directions.

As each of the opposite sides of the mounting hole12is provided with a mounting groove116on the front panel11a, and each of the opposite sides of the phase-inverted hole13is provided with a mounting groove116on the rear panel11b, therefore, each of opposite sides of the mounting hole12is provided with a damping member30, and each of opposite sides of the phase-inverted hole13is provided with a damping member30. Each of the holding members40connects a damping member30on the front panel11aand a damping member30on the rear panel11b. As the holding member40connects the damping members30at two positions, the damping members30at two positions are integrated through the holding member40, whereby the stiffness of the speaker box10along the vibrating direction L is further increased. The holding member40includes insertion holes41at two opposite ends, into which the core31of the damping member30is inserted.

A plurality of the engaging tabs117are also disposed at one end of the second body112away from the first body111, and a damping member30is disposed at the end of the second body112away from the first body111.

The first structural grooves113, the second structural grooves114and the third structural grooves115extending along the vibrating direction L are capable of increase the stiffness of the speaker box10.

As the speaker box is provide with damping members, the damping members are capable of reducing the vibration of the speaker box and even completely eliminating it when the sound waves generated in the resonating chamber of the speaker box, whereby the additional noises caused by the vibration of the speaker box are prevented.