CN211656329U

CN211656329U - Sound box capable of preventing sound leakage of cavity

Info

Publication number: CN211656329U
Application number: CN202021865511.7U
Authority: CN
Inventors: 张朝文
Original assignee: Shenzhen Hanhong Digital Technology Co ltd
Current assignee: Shenzhen Hanhong Digital Technology Co ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2020-10-09
Anticipated expiration: 2030-09-01

Abstract

The utility model discloses a sound box for preventing sound leakage of a cavity, which comprises a box body, a PCB board and a cover, wherein the PCB board and the cover are arranged on the box body; the box body is provided with an accommodating cavity, the PCB and the cover are arranged in the accommodating cavity, the PCB is connected with a mounting rack, the box body is provided with a second window penetrating through the accommodating cavity, the mounting rack is exposed out of the second window, the PCB is provided with a plurality of data interfaces arranged in an interval manner, the mounting rack is provided with openings, and the data interfaces are exposed out of the corresponding openings; the cover is arranged on the PCB in a covering mode and fixed on the mounting frame, a sealing space is formed among the cover, the PCB and the mounting frame, and the data interface is located in the sealing space; so, through the design of mounting bracket, PCB board and lid, utilize to form sealed space between lid and PCB board, the mounting bracket, the sound of having avoided the sound chamber passes to the outside in data interface's gap, and structural design is simple, and is ingenious reasonable, is favorable to having improved the broadcast tone quality of audio amplifier, gives the better audio experience of user.

Description

Sound box capable of preventing sound leakage of cavity

Technical Field

The utility model belongs to the technical field of the audio amplifier technique and specifically relates to indicate a prevent audio amplifier that cavity leaks sound.

Background

Along with the development of science and technology, the living standard of people is improved, and entertainment and leisure are more and more valued by society, so that a lot of business opportunities are brought; the sound box is used as an output terminal of the sound equipment, mainly has the function of converting the electric signal into sound through the loudspeaker, and restores the sound into a field effect as much as possible by means of the sound assisting function of the sound box; the sound cavity is linked together with the data interface of PCB board usually in current audio amplifier, and the gap that the sound source in sound cavity was followed data interface easily spreads into the outside, leads to the broadcast tone quality of audio amplifier not good enough, and the limitation audio is experienced.

Therefore, a new technical solution is needed to solve the above problems.

Disclosure of Invention

In view of this, the utility model discloses to the disappearance that prior art exists, its main objective provides a prevent audio amplifier that cavity leaks sound, and it utilizes to form confined space between lid and PCB board, the mounting bracket through the design of mounting bracket, PCB board and lid, has avoided the sound in sound chamber to pass to the outside in data interface's gap, is favorable to having improved the broadcast tone quality of audio amplifier, experiences for the better audio of user.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a sound box for preventing sound leakage of a cavity comprises a box body, a PCB and a cover, wherein the PCB and the cover are arranged on the box body; wherein:

the box body is internally provided with an accommodating cavity, the PCB and the cover are arranged in the accommodating cavity, the PCB is connected with a mounting rack, the box body is provided with a second window penetrating through the accommodating cavity, the mounting rack is exposed out of the second window, the PCB is provided with a plurality of data interfaces arranged in an interval manner, the mounting rack is provided with openings, and the data interfaces are exposed out of the corresponding openings;

the cover is arranged on the PCB in a covering mode and fixed on the mounting frame, a sealing space is formed among the cover, the PCB and the mounting frame, and the data interface is located in the sealing space; soundproof cotton is arranged in the sealed space and surrounds the data interface.

As a preferable scheme, the mounting frame is provided with two first connecting portions extending towards the PCB, the two first connecting portions are arranged on the mounting frame at intervals, positioning grooves are formed in opposite sides between the two first connecting portions, extending portions extend outwards from two ends of the PCB, and the extending portions are limited in the corresponding positioning grooves;

still be provided with the gasket, the tip of gasket supports respectively to be located between first connecting portion, the extension on both's the tip, corresponding sixth connecting hole, seventh connecting hole have been seted up respectively to first connecting portion and gasket, connect gradually in seventh connecting hole, sixth connecting hole through the third connecting piece between first connecting portion and the gasket to reach the equipment location between PCB board and the installed part.

As a preferred scheme, the mounting bracket is provided with a second connecting portion in an extending manner towards the cover, the second connecting portion is located in the sealing space, and the end portion of the second connecting portion abuts against the sealing cover and is locked by a fourth connecting piece.

As a preferred scheme, the periphery of mounting bracket is provided with fixed limit, fixed limit supports the edge of locating the second window, fixed limit and box all are provided with the eighth connecting hole to connect gradually in the eighth connecting hole of fixed limit, box through the fifth connecting piece and in order to form the equipment connection between mounting bracket and the box.

As a preferable scheme, a groove is formed in the outer side of the mounting frame, and the opening is formed in the inner end face of the groove.

Preferably, a switch is further provided, and the switch is arranged in the groove and located beside the opening.

Preferably, the mounting frame is provided with a convex part for positioning the cover, the convex part is positioned above the opening, and the upper end of the cover is limited by the lower end of the convex part.

Compared with the prior art, the utility model has obvious advantages and beneficial effect, concretely speaking, can know from above-mentioned technical scheme, it is mainly through the design of mounting bracket, PCB board and lid, utilize and form the confined space between lid and PCB board, the mounting bracket, the sound of having avoided the sound chamber is passed to the outside in the gap of data interface, and, the setting of soundproof cotton, the sound insulation effect of further having guaranteed the confined space, further improve the tone quality of audio amplifier, the structural design is simple, ingenious reasonable, be favorable to improving the broadcast tone quality of audio amplifier, give the better audio experience of user;

and the arrangement of the first connecting part and the positioning groove ensures that the extending part of the PCB is limited in the positioning groove, the gasket is abutted to the first connecting part and the extending part and is fixed, the positioning is accurate, the assembly is convenient, the connection is firm, and therefore, the accurate assembly of the PCB is favorable for forming an accurate and reliable sealing space between the cover and the PCB and the mounting rack.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a first perspective view of an embodiment of the present invention;

fig. 2 is a second perspective view of the embodiment of the present invention;

fig. 3 is an exploded view of an embodiment of the invention;

fig. 4 is an exploded view of a speaker unit according to an embodiment of the present invention;

fig. 5 is a first cross-sectional view of an embodiment of the invention;

fig. 6 is a second cross-sectional view of an embodiment of the invention;

fig. 7 is an exploded view of a PCB board, cover and mounting member of an embodiment of the invention;

fig. 8 is a third cross-sectional view of an embodiment of the invention;

fig. 9 is a fourth cross-sectional view of an embodiment of the invention.

The attached drawings indicate the following:

10. case 101, first connecting hole

102. Third connecting hole 11, main casing

111. The accommodating cavity 112 and the first window

113. Second window 114, partition

115. Inverter tube 12, side plate

121. Key 13 and PCB

131. Extension 132, spacer

133. Data interface 14, mounting bracket

141. Opening 142 and first connecting part

143. Second connecting part 144 and positioning groove

145. Fixed edge 146, groove

147. Convex strip 148 and switch

15. Sealing cover 151 and sealed space

16. Ear hook 20 and speaker unit

21. Speaker frame 211, connecting column

212. Mounting and positioning edge 213 and first positioning part

214. Concave position 215 and clamping hole

216. Second and fifth connection holes 217 and 217

22. Loudspeaker 221, second location portion

222. Fourth connecting hole 23, screen panel

231. And (6) clamping and protruding.

Detailed Description

Fig. 1 to 9 show specific structures of embodiments of the present invention.

Here, a speaker mounting structure is taken as an example for explanation, however, a mode of a speaker preventing sound leakage from a cavity is not limited to be applied to a speaker mounting structure;

a loudspeaker mounting structure of the baffle box, including the container body 10 and loudspeaker unit 20 set in container body 10; wherein:

the box body 10 is provided with an accommodating cavity 111, and a first window 112 penetrating through the accommodating cavity 111 is formed in a first outer side surface of the box body 10;

the horn unit 20 comprises a horn frame 21 and a horn 22 arranged on the horn frame 21; the horn frame 21 is provided with a connecting column 211, the horn frame 21 is installed at the first window 112, the connecting column 211 extends towards the inside of the accommodating cavity 111 and abuts against the inner end face of the accommodating cavity 111, the box body 10 and the connecting column 211 are respectively provided with a first connecting hole 101 and a second connecting hole 216, and the second outer side face of the box body 10 is sequentially connected with the first connecting hole 101 and the second connecting hole 216 through a first connecting piece, so that the mounting and positioning of the horn unit 20 in the box body 10 are achieved, and the first outer side face and the second outer side face are arranged oppositely; preferably, the connecting columns 211 are provided with four, and the four connecting columns 211 are arranged at intervals along the circumference of the speaker frame 21; so, on the spliced pole of utilizing the loudspeaker frame was fixed in the box, improved the joint strength between loudspeaker unit and the box, and then improved the bulk strength of box, structural design is ingenious reasonable, and the practicality is strong, and application scope is wide.

As shown in fig. 5 and 8, the horn holder 21 has a mounting positioning edge 212, and the mounting positioning edge 212 is located outside the first outer side surface of the box 10; here, the four connecting columns 211 are located at the lower end of the mounting and positioning edge 212; moreover, a third connecting hole 102 is disposed on the first outer side of the box 10 corresponding to the periphery of the first window 112, the mounting and positioning edge 212 is provided with a first positioning portion 213, the first positioning portion 213 is located at the lower end of the mounting and positioning edge 212, and the first positioning portion 213 is limited in the third connecting hole 102, so as to realize the positioning between the speaker frame 21 and the first window 112; so, the setting on installation location limit has made things convenient for the location between loudspeaker frame and the box, and simultaneously, the setting of first location portion and third connecting hole utilizes first location portion to be restricted in the third connecting hole to realize that loudspeaker frame is connected with the location of first window, the location is accurate, and the equipment is convenient.

As shown in fig. 4, the horn frame 21 has a concave portion 214 extending downward, a through hole is provided in the concave portion 214, a second positioning portion 221 extends from the periphery of the horn 22, the horn 22 extends downward into the through hole, and the second positioning portion 221 abuts against and is fixed to an inner end surface of the concave portion 214 to form an assembling location of the horn 22.

Here, the second positioning portion 221 and the recess 214 are respectively provided with a fourth connecting hole 222 and a fifth connecting hole 217, and the second positioning portion 221 is sequentially connected to the fourth connecting hole 222 and the fifth connecting hole 217 through a second connecting member, so as to achieve the assembling and positioning between the horn 22 and the horn frame 21.

Usually, a mesh cover 23 is disposed on the outer side of the horn frame 21, the mesh cover 23 is snap-fit assembled to the horn frame 21, and the mesh cover 23 covers the mounting positioning edge 212 of the horn frame 21; here, the mesh enclosure 23 has a downwardly extending fastening protrusion 231, the fastening protrusion 231 is provided with four fastening protrusions 231, the four fastening protrusions 231 are arranged along the lower end periphery of the mesh enclosure at intervals, the horn frame 21 is provided with fastening holes 215 corresponding to the fastening protrusions 231 of the mesh enclosure 23, and the fastening protrusions 231 are adapted to be positioned in the fastening holes 215 to form an assembled connection between the mesh enclosure 23 and the horn frame 21.

In this embodiment, the number of the horn units 20 is two, correspondingly, the number of the first windows 112 is two, the two first windows 112 are arranged on the box body 10 at left and right intervals, and the two horn units 20 are respectively arranged in the corresponding first windows 112.

The portable electronic device is characterized by further comprising a PCB 13 and a cover 15, wherein the PCB 13 and the cover 15 are both arranged in the accommodating cavity 111, the PCB 13 is connected with a mounting rack 14, the box body 10 is provided with a second window 113 penetrating through the accommodating cavity 111, the mounting rack 14 is mounted on the second window 113 and exposed, the PCB 13 is provided with a plurality of data interfaces 133 arranged at intervals, the mounting rack 14 is provided with openings 141, and the data interfaces 133 are exposed corresponding to the openings 141;

the cover 15 is covered on the PCB 13 and fixed on the mounting frame 14, a sealed space 151 is formed between the cover 15 and the PCB 13 as well as between the cover 15 and the mounting frame 14, and the data interface 133 is located in the sealed space 151; so, utilize to form confined space between lid and PCB board, the mounting bracket, avoided the sound in sound chamber to pass to the outside in data interface's gap, structural design is simple, and is ingenious reasonable, is favorable to having improved the broadcast tone quality of audio amplifier, and application scope is wide.

Preferably, soundproof cotton is arranged in the sealed space 15, and the soundproof cotton is arranged around the data interface; so, soundproof cotton's setting has further guaranteed the syllable-dividing effect of confined space, is favorable to improving the tone quality of audio amplifier, and the usability is good.

As shown in fig. 7, the mounting frame 14 is provided with first connecting portions 142 extending towards the PCB 13, two first connecting portions 142 are provided, two first connecting portions 142 are arranged on the mounting frame 14 at intervals, positioning grooves 144 are provided on opposite sides between the two first connecting portions 142, two ends of the PCB 13 are provided with extending portions 131 extending outwards, and the extending portions 131 are confined in the corresponding positioning grooves 144;

the PCB mounting structure is further provided with a gasket 132, the gasket 132 is respectively abutted to the end portions of the first connecting portion 142 and the extending portion 131, the first connecting portion 142 and the gasket 132 are respectively provided with a corresponding sixth connecting hole and a corresponding seventh connecting hole, and the first connecting portion 142 and the gasket 132 are sequentially connected to the seventh connecting hole and the sixth connecting hole through a third connecting piece, so that the assembling and positioning between the PCB 13 and the mounting frame 14 are achieved.

Here, the mounting frame 14 is provided with a second connecting portion 143 extending towards the cover 15, the second connecting portion 143 is located in the sealing space 151, and an end of the second connecting portion 143 abuts against the sealing cover 15 and is locked by a fourth connecting member.

As shown in fig. 7, a fixed edge 145 is disposed on the periphery of the mounting frame 14, the fixed edge 145 abuts against the edge of the second window 113, eighth connection holes are disposed on both the fixed edge 145 and the box body 10, and the fixed edge 145 and the box body 10 are sequentially connected to the fixed edge 145 and the eighth connection holes of the box body 10 through a fifth connection piece to form an assembly connection between the mounting frame 14 and the box body 10; preferably, a groove 146 is arranged on the outer side of the mounting rack 14, and the opening 141 is arranged on the inner end surface of the groove 146; moreover, a rib 147 for positioning the cover 15 is disposed on the mounting frame 14, the rib 147 extends along the outer periphery of the cover 15, the rib 147 is located above the opening 141, and the outer periphery of the cover 15 is limited by the lower end of the rib 147.

A switch 148 is also provided, the switch 148 being disposed within the recess 146 and laterally of the opening 141.

The box body 10 comprises a main shell 11 and side plates 12, wherein the main shell 11 is integrally formed and connected with the side plates, the side plates 12 are arranged on the main shell 11, the accommodating cavity 111 is formed in the main shell 11, the left end and the right end of the accommodating cavity 111 penetrate through the main shell 11, and the side plates 12 are respectively arranged at the left end and the right end of the main shell 11 to seal the accommodating cavity 111;

the first window 112 is formed at the upper end of the main housing 11, the second window 113 is formed at the rear end of the main housing 11, and the PCB 13 is located between the two speaker units 20; preferably, the left side plate 12 is provided with keys 121, the keys 121 are arranged in a front-to-back spacing manner, and the keys 121 are connected to the PCB 13.

Preferably, the box body 10 is provided with two ear hanging parts 16, and the two ear hanging parts 16 are arranged at the rear end of the box body in a left-right spacing manner.

The accommodating cavity 111 is internally provided with a flat sound loudspeaker, the accommodating cavity 111 is provided with a partition plate 114, the partition plate 114 divides the accommodating cavity 111 into a front cavity and a rear cavity, the loudspeaker unit 20, the flat sound loudspeaker and the PCB 13 are all arranged in the rear cavity, the flat sound loudspeaker is respectively arranged at the left end and the right end of the rear cavity, and the loudspeaker unit 20 and the PCB 13 are positioned between the flat sound loudspeakers at the left end and the right end;

here, the partition plate 114 is provided with third windows corresponding to the flat sound speakers, the flat sound speakers are respectively arranged on the corresponding third windows, and the sound outlet ends of the flat sound speakers are arranged towards the front cavity; an inverter tube 115 is arranged in the rear cavity, and two ends of the inverter tube 115 are respectively communicated with the front cavity and the rear cavity; sound insulation cotton is also arranged on the flat sound loudspeaker; and a first sound insulation plate and a second sound insulation plate are respectively arranged between the flat sound loudspeaker and the side plate and between the flat sound loudspeaker and the loudspeaker unit.

The utility model is mainly characterized in that through the design of the mounting rack, the PCB and the cover, the PCB and the mounting rack are utilized to form a sealed space, thereby avoiding the sound of the sound cavity from being transmitted to the outside in the gap of the data interface, the structure design is simple, the design is ingenious and reasonable, the playing tone quality of the sound box is improved, and better sound effect experience is provided for users;

secondly, the sound insulation effect of the sealed space is further ensured and the sound quality of the sound box is further improved due to the arrangement of the sound insulation cotton;

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a prevent audio amplifier that cavity leaks sound which characterized in that: comprises a box body, a PCB board and a cover, wherein the PCB board and the cover are arranged on the box body; wherein:

2. The loudspeaker box of claim 1, wherein the sound leakage of the cavity is prevented by: the PCB board is characterized in that the mounting frame is provided with two first connecting parts extending towards the PCB board, the two first connecting parts are arranged on the mounting frame in an interval mode, positioning grooves are formed in the opposite sides between the two first connecting parts, extending parts extend outwards from two ends of the PCB board, and the extending parts are limited in the corresponding positioning grooves;

3. The loudspeaker box of claim 1, wherein the sound leakage of the cavity is prevented by: the mounting bracket extends towards the cover direction and is provided with a second connecting portion, the second connecting portion are located in the sealed space, and the end portion of the second connecting portion is abutted to the sealed cover and locked through a fourth connecting piece.

4. The loudspeaker box of claim 1, wherein the sound leakage of the cavity is prevented by: the periphery of mounting bracket is provided with fixed limit, fixed limit supports the edge of locating the second window, fixed limit and box all are provided with the eighth connecting hole to connect gradually in the eighth connecting hole of fixed limit, box through the fifth connecting piece and in order to form the equipment connection between mounting bracket and the box.

5. The loudspeaker box of claim 1, wherein the sound leakage of the cavity is prevented by: the outer side of the mounting frame is provided with a groove, and the opening is formed in the inner end face of the groove.

6. The loudspeaker box of claim 5, wherein the sound leakage of the cavity is prevented by: the switch is arranged in the groove and positioned beside the opening.

7. The loudspeaker box of claim 1, wherein the sound leakage of the cavity is prevented by: the mounting frame is provided with a convex part used for positioning the cover, the convex part is positioned above the opening, and the upper end of the cover is limited by the lower end of the convex part.