CN220342468U

CN220342468U - Speaker rear cavity volume-increasing structure and speaker

Info

Publication number: CN220342468U
Application number: CN202320887851.7U
Authority: CN
Inventors: 张凯; 丁鹏; 张林峰; 伊仁鑫
Original assignee: Zhejiang Qisheng Electronic Technology Co ltd
Current assignee: Zhejiang Qisheng Electronic Technology Co ltd
Priority date: 2023-04-17
Filing date: 2023-04-17
Publication date: 2024-01-12
Anticipated expiration: 2033-04-17

Abstract

The utility model discloses a rear cavity capacity-increasing structure of a loudspeaker and a corresponding loudspeaker, comprising: a shell with a cavity, wherein at least one opening is formed in the shell; and the attaching layer is attached to the outer side surface and/or the inner side surface of the shell and covers the opening, and the attaching layer is made of flexible film materials. According to the utility model, the shell of the loudspeaker BOX is provided with the holes, and the holes are attached with the flexible material for sealing, so that the resonance frequency of the loudspeaker can be effectively reduced, and the sound effect is improved, thereby enabling the loudspeaker to have the performance of a larger rear cavity under the same rear cavity volume.

Description

Speaker rear cavity volume-increasing structure and speaker

Technical Field

The utility model relates to the technical field of speakers, in particular to a rear cavity capacity-increasing structure of a speaker and a corresponding speaker.

Background

Along with the development of society and science and technology, electronic products are continuously developed towards the directions of thinness and smallness, so that the size of a loudspeaker in the electronic products is required to be continuously reduced, the size of a rear cavity of the loudspeaker is reduced, the performance of the loudspeaker is reduced, the resonant frequency is too high, the tone quality is affected, and the defects exist.

Disclosure of Invention

The utility model aims to avoid the defects existing in the prior art, thereby providing the rear cavity capacity-increasing structure of the loudspeaker, and improving the performance of the loudspeaker under the same volume of the rear cavity.

The utility model solves the technical problems by adopting the following technical scheme: a speaker back volume enhancement structure comprising:

a shell with a cavity, wherein at least one opening is formed in the shell;

and the attaching layer is attached to the outer side surface and/or the inner side surface of the shell and covers the opening, and the attaching layer is made of flexible film materials.

In several embodiments, the openings are provided in the same end face of the housing.

In several embodiments, the openings are provided in different end faces of the housing.

In several embodiments, the attachment layer completely covers the end face where the opening is located.

In several embodiments, the attachment layer covers the position where the opening is located, and does not completely cover the end face where the opening is located.

In several embodiments, the two attaching layers are respectively disposed on the outer side surface and the inner side surface of the housing and cover the opening, and a filling layer is disposed between the two attaching layers, the filling layer fills the opening, and the filling layer adopts a damping material or a heat dissipation material.

In several embodiments, the attachment layer has an outward convex arc at a position corresponding to the opening.

And a loudspeaker adopting the rear cavity capacity-increasing structure.

The utility model has the following beneficial effects:

according to the utility model, the shell of the loudspeaker BOX is provided with the holes, and the holes are attached with the flexible material for sealing, so that the resonance frequency of the loudspeaker can be effectively reduced, and the sound effect is improved, thereby enabling the loudspeaker to have the performance of a larger rear cavity under the same rear cavity volume.

Drawings

The drawings described herein are for illustration purposes only of selected embodiments and are not intended to represent all possible implementations and should not be construed as limiting the scope of the present utility model.

Fig. 1 schematically shows the structure of the rear cavity capacity-increasing structure of the speaker in embodiment 1;

fig. 2 schematically shows the structure of the rear cavity capacity-increasing structure of the speaker in embodiment 2;

fig. 3 schematically shows the structure of the rear cavity capacity-increasing structure of the speaker in embodiment 3;

fig. 4 schematically shows the structure of the rear cavity capacity-increasing structure of the speaker in embodiment 4;

fig. 5 schematically shows the structure of the rear cavity capacity-increasing structure of the speaker in embodiment 5;

fig. 6 schematically shows an enlarged structure of the a portion in fig. 5.

Detailed Description

In the following, embodiments of the present utility model will be described in detail, for the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, and in the following, technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments.

The terminology used herein is for the purpose of describing embodiments and is not intended to be limiting and/or limiting of the utility model.

For example, "in a certain direction", "parallel", "orthogonal", "center", "opposite", "front-rear-left-right", and the like indicate expressions of relative or absolute arrangement, and indicate not only such arrangement in a strict sense but also a state of relative displacement with tolerance or with an angle or distance that can obtain the same degree of function.

Example 1

As shown in fig. 1, the rear cavity capacity-increasing structure of the speaker provided in this embodiment is mainly composed of a housing 10 and an attaching layer 20, wherein a cavity 11 is provided inside the housing 10, and is used as a BOX housing to accommodate a diaphragm sounding component of the speaker.

At least one opening 12 is formed in the housing 10, the opening 12 is located on the same end face of the housing 10, the end face is set as an upper end face, and the attaching layer 20 is completely attached to and covered on the outer side of the upper end face, so that all the openings 12 on the upper end face are covered, and the attaching layer 20 can be formed synchronously with the housing 10 in the injection molding process or adhered and fixed through glue.

The adhesive layer 20 is made of a flexible film material.

Example 2

As shown in fig. 2, the speaker rear chamber capacity increasing structure provided in this embodiment is different from embodiment 1 in that the attaching layer 20 is entirely attached to the inner side of the upper end surface of the housing 10, that is, the attaching layer 20 is located inside the housing 10.

Example 3

As shown in fig. 3, the difference between the speaker rear cavity capacity increasing structure provided in this embodiment and embodiment 1 is that the attaching layer 20 is not completely attached to cover the outer side of the upper end surface of the housing 10, that is, after the attaching layer 20 is cut according to the shape of the opening 12, only covers the position of the opening 12, so that the usage amount of the attaching layer 20 can be reduced, and the attaching layer 20 is slightly larger than the size of the opening 12, leaving an adhesive space.

Example 4

As shown in fig. 4, the speaker rear chamber capacity increasing structure provided in this embodiment is different from embodiment 3 in that the attaching layer 20 is not completely attached to cover the inner side of the upper end surface of the housing 10, that is, the attaching layer 20 is located inside the housing 10.

Example 5

As shown in fig. 5-6, the rear cavity capacity-increasing structure of the speaker provided in this embodiment also has a housing 10 and an attaching layer 20, wherein the attaching layer 20 covers the inner side and the outer side of the upper end surface of the housing 10 respectively, the attaching layer 20 has a shape and a size corresponding to the openings 12, a filling layer 30 is filled between the two attaching layers 20 and the covered openings 12, and the filling layer 30 is made of a damping material such as rubber or a heat dissipation material such as graphite, so that the amplitude of the speaker is reduced, and the overall heat dissipation performance is improved.

To increase the volume of the filling layer 30, the attachment layers 20 are curved in an outward direction in a position corresponding to the openings 12, i.e., the two attachment layers 20 generally form an oval structure that increases the internal volume of the container.

In embodiment 1 to embodiment 4, the adhesion layer 20 may be double-layered to cover the inner and outer positions of the upper end surface of the casing 10.

It should be noted that the location, shape, size and number of the openings 12 may be changed according to specific requirements.

The present utility model describes preferred embodiments, including the best mode known to the inventors for carrying out the utility model. Variations of these preferred embodiments will, of course, be apparent to those skilled in the art. The inventors expect skilled artisans to employ such variations as appropriate, and the inventors intend for the utility model to be practiced otherwise than as specifically described herein. Accordingly, this utility model includes all modifications encompassed within the spirit and scope of the utility model as defined by the claims. Moreover, unless indicated otherwise or clearly contradicted by context, the present utility model includes any of the above-described factors and all possible variations thereof.

Claims

1. A speaker rear cavity volume increasing structure, comprising:

a shell with a cavity, wherein at least one opening is formed in the shell;

and the attaching layer is attached to the outer side surface and/or the inner side surface of the shell and covers the opening.

2. The speaker rear cavity expansion structure as recited in claim 1, wherein said openings are provided in a same end face of the housing.

3. A loudspeaker rear cavity volume increasing structure according to claim 1, wherein said openings are provided in different end faces of the housing.

4. A loudspeaker rear cavity volume increasing structure according to claim 2 or 3, wherein said attachment layer completely covers the end face where the opening is located.

5. A loudspeaker rear cavity volume increasing structure according to claim 2 or 3, wherein said attachment layer covers the location of the opening and does not completely cover the end face of the opening.

6. The speaker rear cavity capacity-increasing structure as set forth in claim 1, wherein two of the attaching layers are disposed on an outer side surface and an inner side surface of the housing, respectively, and cover the opening, and a filling layer is disposed between the two attaching layers, and fills the opening.

7. The speaker rear cavity-enhancing structure as claimed in claim 6, wherein the attachment layer has an outwardly convex curvature at a position corresponding to the opening.

8. A loudspeaker comprising a loudspeaker rear cavity volume increasing structure according to any of claims 1-3.