CN219164686U

CN219164686U - Sound cavity structure

Info

Publication number: CN219164686U
Application number: CN202223184866.1U
Authority: CN
Inventors: 刘滔; 黄飚
Original assignee: Dain Electronic Shenzhen Co ltd
Current assignee: Dain Electronic Shenzhen Co ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-06-09
Anticipated expiration: 2032-11-28

Abstract

The utility model discloses a sound cavity structure, which comprises an upper shell and a lower shell, wherein a first connecting part is arranged at the bottom side edge of the upper shell, a second connecting part is arranged at the top side edge of the lower shell, a protruding part is arranged in the first connecting part, the first connecting part is matched with the second connecting part, the first connecting part and the second connecting part are surrounded to form a welding groove, the protruding part is positioned in the welding groove, a loudspeaker is respectively arranged at the left part and the right part between the upper shell and the lower shell, a buckle is respectively arranged at four corners of the bottom surface of the lower shell, and a reinforcing rib is arranged between the buckle and the side wall of the lower shell. The utility model has the advantages of effectively reducing resonance and the like.

Description

Sound cavity structure

Technical Field

The utility model belongs to the technical field of projectors, and particularly relates to a sound cavity structure.

Background

The sound cavity structure is mainly used in equipment such as a projector and is used for installing a loudspeaker unit to play audio, however, along with the arrival of an artificial intelligence era, the requirements of people on life quality are continuously improved, the requirements of people on sound quality of electronic products such as the projector are increasingly higher, besides the requirements of the sound cavity structure on low power distortion are met, the requirements of people on vibration of the whole sound cavity structure are also higher, that is, the resonance of the whole sound cavity structure is reduced, and therefore the requirements of the whole projector and other complete machine assembly are met.

The wall thickness of the sound cavity structure used in the existing projector is thicker, the sound cavity structure can be sealed and assembled in an ultrasonic welding mode during production and processing, and large ultrasonic equipment is needed to be used for ultrasonic sealing, but the structure is limited by the design limit of the existing sound cavity structure and the space and the like when the sound cavity structure is assembled in the whole projector, a buckle structure on the sound cavity structure can be arranged at a position deviating from the sound cavity structure shell body, in particular, the buckle structure is generally arranged at the corner position of the sound cavity structure shell body, however, the strength of the corner position is often lower, the buckle part is extremely easy to break when the ultrasonic equipment is utilized for the ultrasonic welding at the extreme center, the subsequent assembly is affected, the resonance problem is caused, the wall thickness of the existing sound cavity structure is thicker, the ultrasonic welding is carried out between the connecting parts of all the shells of the sound cavity structure, and the problem of resonance is possibly aggravated due to insufficient welding strength.

Patent application number 202221018130.4 discloses a sound cavity structure, including first casing, the second casing, first loudspeaker and second loudspeaker, wherein first casing rear side is uncovered, upper side middle part is equipped with first passive plate support column and second passive plate support column along upper and lower direction about the interval in the first casing, first mounting hole has been seted up at the front wall upside middle part of first casing, install first passive plate in the first mounting hole, second casing lock joint is at the rear side of first casing, upper side middle part is equipped with third passive plate support column and fourth passive plate support column along upper and lower direction about the interval in the second casing, first passive plate support column and third passive plate support column correspond the setting around, second passive plate support column and fourth passive plate support column correspond the setting around, second casing rear side middle part is equipped with the second mounting hole, install the second passive plate in the second mounting hole, correspond around first mounting hole and the second mounting hole, left side is equipped with the third passive plate support column and fourth passive plate support column along upper and lower direction in the second casing, but the second loudspeaker is difficult for setting up with the second loudspeaker, the second vibration is provided with the third mounting hole in the second casing, but the second loudspeaker is difficult to install the dislocation structure in the first loudspeaker, the second casing is provided with the fourth loudspeaker.

Disclosure of Invention

The utility model provides a sound cavity structure with small resonance, which aims to solve the defects in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the sound cavity structure comprises an upper shell and a lower shell, wherein a first connecting part is arranged on the bottom side edge of the upper shell, a second connecting part is arranged on the top side edge of the lower shell, a protruding part is arranged in the first connecting part, the first connecting part is matched with the second connecting part, a welding groove is formed by surrounding the first connecting part and the second connecting part, the protruding part is positioned in the welding groove, a loudspeaker is respectively arranged on the left part and the right part between the upper shell and the lower shell, a buckle is respectively arranged on the four corners of the bottom surface of the lower shell, and a reinforcing rib is arranged between the buckle and the side wall of the lower shell.

Preferably, the middle part and the right side upper portion are equipped with first spliced pole and second spliced pole respectively in the inferior valve, upper housing middle part and right side upper portion are equipped with first screw hole and second screw hole respectively, and first spliced pole and first screw hole correspond the setting and install first screw in the first screw hole, and first screw passes first screw hole and installs in first spliced pole, and second spliced pole and second screw hole correspond the setting and install the second screw in the second screw hole, and the second screw passes the second screw hole and installs in the second spliced pole.

Preferably, a third connecting column is respectively arranged at the rear side of the left part of the top surface, the rear side of the middle part of the top surface and the rear side of the right part of the top surface of the upper shell.

Preferably, the bottom of the lower shell is provided with an air duct runner, the upper shell and the lower shell are surrounded to form an installation cavity, the loudspeaker is located in the installation cavity, the air duct runner is located below the installation cavity, one end of the air duct runner is communicated with the installation cavity, the other end of the air duct runner is a free end and penetrates out of the lower shell, the bottom of the side wall of the air duct runner is provided with an installation groove, and an air duct piece is installed in the installation groove.

Preferably, the top of the right side of the upper shell is provided with a wire outlet, and the free end of the connecting wire of the loudspeaker penetrates through the wire outlet and extends to the outer side of the upper shell.

Preferably, the first connecting portion, the protruding portion and the second connecting portion are ultrasonically welded.

By adopting the technical scheme, the utility model has the following beneficial effects:

(1) The reinforcing ribs are arranged between the buckles and the side wall of the lower shell, so that the strength of the buckles can be enhanced, breakage caused by low strength of the buckles in the ultrasonic welding processing process by using ultrasonic equipment is prevented, and breakage resonance phenomenon caused by the buckles is prevented;

(2) The bottom side edge of the upper shell is provided with the first connecting part, the top side edge of the lower shell is provided with the second connecting part, the first connecting part is internally provided with the protruding part, the first connecting part is matched with the second connecting part, the first connecting part and the second connecting part are surrounded to form a welding groove, the protruding part is positioned in the welding groove, the first connecting part, the protruding part and the second connecting part are in ultrasonic welding, and the protruding part is arranged in the first connecting part and the second connecting part in an adaptive manner, so that the first connecting part and the second connecting part are in ultrasonic welding more firmly, and the resonance problem after the assembly of the ultrasonic welding device is effectively reduced;

(3) The utility model is provided with the air duct flow channel, and the design of the air duct flow channel enables the utility model to have strong bass effect and convex middle and high tones, thereby meeting the hearing requirement of people;

in summary, the utility model has the advantages of effectively reducing resonance and the like.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic structural view of the upper shell of the present utility model;

FIG. 3 is a schematic view of the structure in the other direction of FIG. 2;

FIG. 4 is a schematic view of the structure of the lower case of the present utility model;

FIG. 5 is a schematic view of the structure in the other direction of FIG. 4;

FIG. 6 is a schematic view of the structure of FIG. 5 with the duct pieces removed;

FIG. 7 is an enlarged view at A in FIG. 3;

fig. 8 is an enlarged view at B in fig. 4.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown.

The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

The sound cavity structure in this embodiment may be used in various electronic devices, such as projector devices, where the connection between the buckle and the housing of the sound cavity structure used in the projector devices in the prior art is limited by the structure and design, so that the sound cavity structure is easy to resonate during subsequent processing, and the resonance is serious.

As shown in fig. 1 to 4, in one embodiment of the present utility model, the sound cavity structure of the present utility model includes an upper case and a lower case, wherein the upper case and the lower case are adapted, specifically, a bottom side edge of the upper case is provided with a first connecting portion, a top side edge of the lower case is provided with a second connecting portion, a protruding portion is provided in the first connecting portion, the first connecting portion is adapted to the second connecting portion, and the first connecting portion and the second connecting portion enclose a welding groove, and the protruding portion is located in the welding groove;

more specifically, please refer to fig. 7 and 8, the first connecting portion is a stepped structure with a low outside and a high inside, wherein another stepped structure, namely, a protruding portion is further arranged in the stepped structure, the protruding portion is 3mm x 3mm, namely, the height and thickness of the protruding portion in the first connecting portion are 3mm, the second connecting portion is a stepped structure with a low outside and a high inside, the second connecting portion can be just fit and attached to the first connecting portion when attached to the second connecting portion, so that the first connecting portion and the second connecting portion are surrounded to form a welding groove, then the protruding portion is located in the welding groove, a gap is reserved in the welding groove besides the protruding portion, the first connecting portion, the protruding portion and the second connecting portion are welded together through ultrasonic equipment, and the first connecting portion, the second connecting portion and the protruding portion can be welded firmly in a deformation mode.

Wherein, a part of the left part and the right part between the upper shell and the lower shell are arranged separately (the rest part is welded by ultrasonic through the first connecting part and the second connecting part), namely, the upper shell and the lower shell of the part arranged separately are not contacted and are enclosed into a hole, a loudspeaker is respectively arranged in the hole, the upper shell and the lower shell are enclosed into a mounting cavity, most of the loudspeaker is arranged in the mounting cavity, the two loudspeakers are of the same structure and are symmetrically arranged left and right, the loudspeaker adopts an aluminum-iron-boron full-frequency loudspeaker unit with the caliber of 48mm and the power of 8W, the top of the right side of the upper shell is provided with a wire outlet, the free end of a connecting wire of the loudspeaker extends out of the outer side of the upper shell, the connecting wire of the loudspeaker is directly arranged in the mounting cavity, the wire is not needed to be arranged, the assembly production is simple and convenient, the production yield is high, the labor cost can be greatly reduced, the utility model greatly improves market competitiveness, the four corners of the bottom surface of the lower shell are respectively provided with a buckle, a reinforcing rib is arranged between the buckle and the side wall of the lower shell, it can be understood that the reinforcing rib, namely the bone position design, is mainly used for reinforcing the strength of the buckle, after the strength is increased, the utility model can not influence the yield of products or subsequent processing due to the fracture of the buckle caused by factors such as vibration and the like in the subsequent ultrasonic welding processing process by utilizing ultrasonic equipment, and also avoids the resonance phenomenon caused by the fracture of the buckle, more particularly, please refer to fig. 5 and 6, the bottom of the lower shell is provided with an air duct runner, the air duct runner is positioned below the installation cavity, one end of the air duct runner is communicated with the installation cavity, the other end of the air duct runner is a free end and penetrates out of the lower shell, the bottom of the side wall of the air duct runner is provided with an installation groove, and the air duct piece is installed in the installation groove, by arranging the air duct flow channel, the bass effect of the utility model can be enhanced, middle and high tones are highlighted, and the hearing requirement of people can be met.

Referring to fig. 3 and 4 again, in order to facilitate the connection between the upper case and the lower case and the subsequent assembly of the present utility model to other electronic devices for further use, the middle and right upper parts in the lower case of the present utility model are respectively provided with a first connection post and a second connection post, the middle and right upper parts of the upper case are respectively provided with a first screw hole and a second screw hole, the first connection post and the first screw hole are correspondingly provided with a first screw installed in the first screw hole, the first screw penetrates through the first screw hole to fix the upper case and the lower case, the second connection post and the second screw hole are correspondingly provided with a second screw installed in the second screw hole, the second screw penetrates through the second screw hole to fix the upper case and the lower case, and the top surface, the left rear side of the middle and the right rear side of the top surface are respectively provided with a third connection post.

The specific use process of the utility model is as follows:

when the utility model is specifically used, the utility model is assembled in electronic equipment such as a projector and the like through the third connecting column for use, then the loudspeaker is connected with a control system of the electronic equipment such as the projector and the like, and audio playing can be carried out through the loudspeaker.

The present embodiment is not limited in any way by the shape, material, structure, etc. of the present utility model, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present utility model are all included in the scope of protection of the technical solution of the present utility model.

Claims

1. Sound cavity structure, its characterized in that: including epitheca and inferior valve, the bottom side limit of epitheca is equipped with first connecting portion, and the top side limit of inferior valve is equipped with the second connecting portion, is equipped with the bellying in the first connecting portion, and first connecting portion and second connecting portion looks adaptation and first connecting portion and second connecting portion enclose into a welding groove, the bellying is located the welding groove, a speaker is installed respectively to left part and right part between epitheca and the inferior valve, the bottom surface four corners punishment of inferior valve is equipped with a buckle, be equipped with the strengthening rib between buckle and the lateral wall of inferior valve.

2. The acoustic cavity structure of claim 1, wherein: the middle part and right side upper portion are equipped with first spliced pole and second spliced pole respectively in the inferior valve, epitheca middle part and right side upper portion are equipped with first screw hole and second screw hole respectively, and first spliced pole and first screw hole correspond the setting and install first screw in the first screw hole, and first screw passes first screw hole and installs in first spliced pole, and second spliced pole and second screw hole correspond the setting and install the second screw in the second screw hole, and the second screw passes the second screw hole and installs in the second spliced pole.

3. The acoustic cavity structure of claim 1, wherein: and a third connecting column is respectively arranged at the rear side of the left part of the top surface of the upper shell, the rear side of the middle part of the top surface and the rear side of the right part of the top surface.

4. The acoustic cavity structure of claim 2, wherein: the utility model discloses a wind pipe piece, including lower shell, speaker, tuber pipe runner, mounting groove, duct piece, air duct runner, mounting groove, air duct piece, air duct runner, upper shell and lower shell are equipped with the tuber pipe runner bottom, and upper shell and lower shell surround into an installation cavity, and the speaker is located the installation cavity, and the tuber pipe runner is located the below of installation cavity and the one end and the installation cavity of tuber pipe runner communicate with each other, and the other end of tuber pipe runner is the free end and wears out the lower shell, the lateral wall bottom of tuber pipe runner is equipped with the mounting groove, install the duct piece in the mounting groove.

5. The acoustic cavity structure of claim 1, wherein: the top of the right side of the upper shell is provided with a wire outlet, and the free end of the connecting wire of the loudspeaker penetrates out of the wire outlet and extends to the outer side of the upper shell.

6. The acoustic cavity structure of claim 1, wherein: the first connecting part, the protruding part and the second connecting part are welded by ultrasonic welding.