WO2022006953A1

WO2022006953A1 - Loudspeaker box

Info

Publication number: WO2022006953A1
Application number: PCT/CN2020/102382
Authority: WO
Inventors: 丁健华; 吴树文
Original assignee: 瑞声声学科技(深圳)有限公司; 瑞声科技(新加坡)有限公司
Priority date: 2020-07-09
Filing date: 2020-07-16
Publication date: 2022-01-13
Also published as: CN212936100U

Abstract

Provided is a loudspeaker box. The loudspeaker box comprises a housing having an accommodating space, and a loudspeaker unit accommodated and fixed in the housing, the loudspeaker unit dividing the accommodating space into a front sound cavity and a rear sound cavity, and one end of the housing being provided with an opening. The loudspeaker box further comprises: a protruding ring, which is fixed on a side of the housing where the opening is located; an air-permeable isolation mesh, which is clamped and fixed between the protruding ring and the housing and covers the opening; and a sound absorption cavity cover, covering a side of the protruding ring away from the air-permeable isolation mesh and forming a sound absorption cavity with the air-permeable isolation mesh in an enclosing manner, wherein the housing and the sound absorption cavity cover are arranged on two sides of the protruding ring in a spaced manner; and the rear sound cavity is in communication with the sound absorption cavity by means of the air-permeable isolation mesh. By means of providing the opening in one end of the housing, the air-permeable isolation mesh directly abuts against the opening by means of the protruding ring, and isolation of the unit is achieved, such that the overall structure of the loudspeaker box is further simplified, in addition, compared with the isolation solution of an existing loudspeaker unit, the number of scattered parts is reduced, assembly is more convenient and quick, and the installation efficiency of the loudspeaker box is improved.

Description

speaker box

technical field

The present application relates to the technical field of acoustic devices, and in particular, to a speaker box.

Background technique

The speaker in the prior art is glued with the shell of the speaker box through a plastic ring, and then the isolation net and the plastic ring are glued to cover the speaker monomer, forming a fully filled monomer isolation solution, thereby reducing the speaker resonance frequency F0, Improve the distortion and improve the sound quality of the speaker box, but this solution has many gluing steps, which affects the assembly efficiency of the speaker box.

technical problem

Therefore, it is necessary to provide a speaker cabinet that can improve assembly efficiency in the speaker unit isolation solution.

technical solutions

The purpose of the present application is to provide a speaker box in which the air-permeable isolation net is directly connected to the side of the casing to form an isolation solution for the speaker unit.

The technical solution of the present application is as follows: a speaker box includes a housing with a housing space, and a speaker unit that is housed and fixed in the housing, and the speaker unit divides the housing space into a front acoustic cavity and a rear acoustic cavity , one end of the casing is open, and the speaker box further comprises a convex ring fixed on the casing on one side of the opening, sandwiched and fixed between the convex ring and the casing and covering the opening The air-permeable isolation net, and a sound-absorbing cavity cover that is covered on the side of the convex ring away from the breathable isolation net and is enclosed with the breathable isolation net to form a sound-absorbing cavity, and the sound-absorbing cavity is provided with a sound-absorbing material; The shell and the sound-absorbing cavity cover are arranged at intervals on both sides of the convex ring; the rear sound cavity is communicated with the sound-absorbing cavity through the air-permeable isolation net.

Optionally, the casing and the sound absorbing cavity cover are arranged side by side and the orthographic projections of the casing and the sound absorbing cavity cover do not overlap.

Optionally, the housing includes a top wall, a side wall extending from the periphery of the top wall, and a bottom wall covering the side wall and enclosing the top wall to form the receiving space; the opening is opened on the side wall.

Optionally, the housing includes a support wall extending from the top wall to the bottom wall, the support wall and the air-permeable isolation net are arranged at intervals; the speaker unit is supported and fixed on the support wall and is The front acoustic cavity is formed spaced from the top wall.

Optionally, the side wall of the casing adjacent to or opposite to the opening forms a sound outlet channel connecting the front acoustic cavity and the outside world, and the speaker box further includes covering the sound outlet channel away from the outside. The damping member on one side of the front acoustic cavity.

Optionally, a through hole is formed through the side wall of the casing adjacent to or opposite to the opening, and the speaker box further includes a circuit for electrically connecting the speaker unit and an external circuit through the through hole plate.

Optionally, the breathable isolation mesh is injection-molded or bonded to the raised ring.

Optionally, a filling hole is opened on the sound-absorbing cavity cover, the filling hole is communicated with the sound-absorbing cavity, and the sound-absorbing material is filled into the sound-absorbing cavity through the filling hole.

Optionally, the sound-absorbing cavity cover is provided with a leak hole penetrating the sound-absorbing cavity cover and a breathable mesh cloth attached to the side of the sound-absorbing cavity cover away from the sound-absorbing cavity and covering the leak hole; the The speaker unit is provided with a leaking part, and the leaking part is communicated with the leaking hole through the rear acoustic cavity, the air-permeable isolation net and the sound-absorbing cavity in sequence.

Optionally, the speaker unit includes a basin frame, a vibration system and a magnetic circuit system are fixedly supported on opposite sides of the basin frame, and the magnetic circuit system includes a magnetic bowl, and the magnetic bowl is spaced from the basin frame. The leakage portion is provided to be formed.

beneficial effect

The beneficial effect of the present application is that: by setting an opening at one end of the shell, and directly abutting the air-permeable isolation net on the opening through the convex ring, the isolation of the single unit is realized, on the one hand, the overall structure of the speaker box is simplified, and on the other hand, the Compared with the existing isolation scheme of the speaker unit, the number of scattered parts is reduced, the assembly is more convenient, and the installation efficiency of the speaker box is improved.

Description of drawings

FIG. 1 is a schematic diagram of an embodiment of a speaker box of the application;

Fig. 2 is an exploded view of the loudspeaker box in Fig. 1;

Fig. 3 is the schematic diagram of the sound-absorbing cavity cover in Fig. 1;

Fig. 4 is the top view of the novel loudspeaker box in Fig. 1;

Fig. 5 is the sectional view at A-A place in Fig. 4;

Fig. 6 is the enlarged view at B place in Fig. 5;

FIG. 7 is a schematic diagram of another viewing angle of the loudspeaker in FIG. 1;

Fig. 8 is a sectional view at C-C in Fig. 7;

9 is a schematic view of the bottom wall of the housing;

FIG. 10 is an enlarged view of D in FIG. 9 .

Embodiments of the present invention

The present application will be further described below with reference to the accompanying drawings and embodiments.

Referring to FIGS. 1 to 8 , the speaker box includes a housing 1 having a housing space 11 , and a speaker unit 2 that is housed and fixed in the housing 1 , and the speaker unit 2 divides the housing space 11 into a front acoustic cavity 111 and a rear acoustic cavity 112 One end of the casing 1 is provided with an opening 12, and the speaker box also includes a convex ring 13 fixed to the casing 1 on one side of the opening 12, and a breathable isolation net fixed between the convex ring 13 and the casing 1 and covering the opening 12. 3, and cover the sound-absorbing cavity cover 5 that is arranged on the side of the convex ring 13 away from the breathable isolation net 3 and is enclosed with the breathable isolation net 3 to form a sound-absorbing cavity 4, and the sound-absorbing cavity 4 is provided with a sound-absorbing material (not shown in the figure), The sound-absorbing material is used to reduce the resonant frequency F0 of the speaker, improve the distortion, and improve the sound quality of the speaker box. The connection structure of the single unit 2 is simpler, and compared with the isolation scheme of the speaker unit 2 in the prior art, the number of movable parts that need to be connected during the assembly of the speaker box is reduced, and the air-permeable isolation net 3 and the housing 1 are simplified. The connection process between them improves the assembly efficiency of the isolation scheme of the speaker unit 2 , and at the same time, the arrangement of the convex ring 13 enables the operator to connect the air-permeable isolation net 3 to the housing 1 more conveniently. The shell 1 and the sound-absorbing cavity cover 5 are arranged on both sides of the convex ring 13 at intervals;

Preferably, the shell 1 and the sound-absorbing cavity cover 5 are arranged side by side, and the orthographic projections of the shell 1 and the sound-absorbing cavity cover 5 do not overlap, thereby reducing the thickness of the speaker box to a certain extent, so that the speaker box can be suitable for more Use scenarios in many small spaces.

The casing 1 includes a top wall 14, a side wall 15 extending from the periphery of the top wall 14, and a bottom wall 16 covering the side wall 15 and enclosing the top wall 14 to form a receiving space 11; the opening 12 on the casing 1 is opened in the side wall 15.

Preferably, the housing 1 includes a support arm 17 extending from the top wall 14 to the bottom wall 16 , the support arm 17 is spaced apart from the air-permeable isolation net 3 , and the speaker unit 2 is supported and fixed to the support arm 17 and is spaced from the top wall 14 to form a front Acoustic cavity 111. Further, the support arm 17 and the housing 1 may be an integral structure of injection molding or die casting, thereby reducing the number of movable parts in the housing 1 and facilitating the installation operation of the speaker box.

The side wall 15 of the casing 1 adjacent to or opposite to the opening 12 forms a sound outlet channel 18 connecting the front acoustic cavity 111 and the outside world.

A through hole 19 is formed through the side wall 15 of the casing 1 adjacent to or opposite to the opening 12. The speaker box also includes a circuit board 7 that electrically connects the speaker unit 2 and the external circuit through the through hole 19. The arrangement of the circuit board 7 is relatively Compared with the traditional connection method using cables, the electrical connection of the speaker unit 2 can be facilitated, and at the same time, the connection structure is simple and orderly, convenient for mass production, and the consistency of product quality is guaranteed.

The ventilating isolation net 3 is injection-molded or bonded on the raised ring 13 to ensure the reliability of the connection between the insulating net 3 and the raised ring 13, and the breathable insulating net and the raised ring can be assembled together at the opening of the casing as a whole.

The sound-absorbing cavity cover 5 is provided with a filling hole 51 , the filling hole 51 communicates with the sound-absorbing cavity 4 , and the sound-absorbing material is filled into the sound-absorbing cavity 4 through the filling hole 51 . Preferably, after the sound-absorbing material is filled in the sound-absorbing cavity 4 , the cover plate 53 can be attached to the outside of the filling hole 51 to prevent the sound-absorbing material from leaking from the filling hole 51 .

The sound-absorbing cavity cover 5 is also provided with a leakage hole 52 that penetrates the sound-absorbing cavity cover 5. The diameter of the leakage hole 52 is significantly smaller than the diameter of the filling hole 51, and is attached to the sound-absorbing cavity cover 5 away from the sound-absorbing cavity 4 and covers the leakage hole. 52 of breathable mesh 54. The speaker unit 2 is also provided with a leaking portion 21 , which communicates with the leak hole 52 through the rear acoustic cavity 112 , the air-permeable isolation net 3 and the sound absorbing cavity 4 in sequence, so as to balance the sound pressure of the rear acoustic cavity 112 of the speaker unit 2 .

The speaker unit 2 includes a basin frame 22, a vibration system 8 and a magnetic circuit system 9 fixedly supported on opposite sides of the basin frame 22, and the magnetic circuit system 9 includes a magnetic bowl 91. The magnetic bowl 91 and the basin frame 22 are spaced apart to form a leakage portion 21. .

9 and 10, the bottom wall 16 of the housing 1 is in the shape of a cover as a whole, and the cross section of the bottom wall 16 that matches the side wall 15 is an inverted triangular structure 161. Preferably, the triangular structure 1661 is inclined inwardly. On the one hand, in the process of connecting the bottom wall 16 to the casing 1, the operator can conveniently fasten the bottom wall 16 to the side wall 15 of the casing 1; on the other hand, the setting of the triangular structure 141 makes the top wall 14 It can have a firmer combination and better sealing performance with the casing 1 .

To sum up, by setting the opening on the casing, the convex ring is fixed on the casing on the side where the opening is provided, and a ventilating isolation net is arranged between the convex ring and the shell, and the side of the convex ring facing away from the ventilating isolation net is covered. The sound-absorbing cavity cover is set to realize the isolation of the single unit. On the one hand, the overall structure of the speaker box is simplified. The installation efficiency of the speaker box can be improved.

The above are only the embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, improvements can be made without departing from the creative concept of the present application, but these belong to the present application. scope of protection.

Claims

A loudspeaker box is characterized in that it comprises a casing with a accommodating space, and a loudspeaker unit accommodating and fixing in the casing, the loudspeaker unit dividing the accommodating space into a front acoustic cavity and a rear acoustic cavity, the One end of the casing is open, and the speaker box further comprises a convex ring fixed to the casing on one side of the opening, and a ventilation isolation sandwiched and fixed between the convex ring and the casing and covering the opening a net, and a sound-absorbing cavity cover that is covered on the side of the convex ring away from the breathable isolation net and is enclosed with the breathable isolation net to form a sound-absorbing cavity, and the sound-absorbing cavity is provided with a sound-absorbing material; the shell The sound-absorbing cavity cover is arranged on both sides of the convex ring at intervals; the rear sound cavity is communicated with the sound-absorbing cavity through the air-permeable isolation net.
The speaker box according to claim 1, wherein the casing and the sound absorbing cavity cover are arranged side by side and the orthographic projections of the casing and the sound absorbing cavity cover do not overlap.
The loudspeaker box according to claim 2, wherein the casing comprises a top wall, a side wall extending from the periphery of the top wall, and a cover formed on the side wall and enclosed with the top wall to form a the bottom wall of the receiving space; the opening is opened on the side wall.
The speaker box according to claim 3, characterized in that: the housing comprises a support wall extending from the top wall to the bottom wall, the support wall and the air-permeable isolation net are arranged at intervals; the speaker The single body is supported and fixed on the support wall and is spaced apart from the top wall to form the front acoustic cavity.
The loudspeaker box according to claim 4, wherein the side wall of the casing adjacent to or opposite to the opening penetrates to form a sound outlet channel connecting the front sound cavity and the outside world, and the loudspeaker box It also includes a damping member covering one side of the sound outlet channel away from the front sound cavity.
The speaker box according to claim 4, wherein a through hole is formed through the side wall of the casing adjacent to or opposite to the opening, and the speaker box further comprises an electrical connection through the through hole. The speaker unit and the circuit board of the external circuit.
The speaker box according to claim 1, wherein the breathable isolation net is injection molded or bonded to the convex ring.
The speaker box according to claim 1, wherein a filling hole is opened on the sound-absorbing cavity cover, the filling hole is communicated with the sound-absorbing cavity, and the sound-absorbing material is filled to the in the sound-absorbing cavity.
The loudspeaker box according to claim 1, wherein the sound-absorbing cavity cover is provided with a leakage hole penetrating the sound-absorbing cavity cover, and is attached to a side of the sound-absorbing cavity cover away from the sound-absorbing cavity and covers the sound-absorbing cavity cover. The speaker unit is provided with a leaking part, and the leaking part is communicated with the leaking hole through the rear acoustic cavity, the ventilating isolation net and the sound absorbing cavity in sequence.
The speaker box according to claim 9, wherein the speaker unit comprises a basin frame, a vibration system and a magnetic circuit system are fixedly supported on opposite sides of the basin frame, and the magnetic circuit system comprises a magnetic bowl, The leakage portion is formed by the magnetic bowl and the basin frame being spaced apart.