WO2021077459A1

WO2021077459A1 - Speaker box and terminal device

Info

Publication number: WO2021077459A1
Application number: PCT/CN2019/115046
Authority: WO
Inventors: 李金明
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: 2019-10-24
Filing date: 2019-11-01
Publication date: 2021-04-29
Also published as: CN210781325U

Abstract

Provided in the present invention are a speaker box and a terminal device, the speaker box comprising an upper cover panel, a lower cover panel that forms an accommodating space with the upper cover panel, a sound-generating unit accommodated in the accommodating space, a first steel piece fixed on the lower cover panel and covering the sound-generating unit, and an electrically conductive foam arranged between the first steel piece and the sound-generating unit, a grounding feed point being provided on the upper cover panel. The speaker box is characterized in that a second steel piece connected to the grounding feed point is fixed on the upper cover panel. The speaker box further comprises a connecting piece, one end of the connecting piece being connected to the first steel piece, and the other end of the connecting piece being connected to the second steel piece. The present technical solution can be used to solve the problem in the prior art of large instability in electrical resistance, and fluctuations in overall conductivity when a sound-generating unit and a lower cover steel piece are connected and grounded to a terminal of a complete device.

Description

Speaker box and terminal equipment

【 Technical Field 】

The utility model relates to the technical field of sound-electric conversion, in particular to a speaker box and terminal equipment.

【 Background Technology 】

With the rapid development of science and technology, people's pursuit of quality of life is getting higher and higher, and portable multimedia audio-visual equipment such as notebook computers, mobile phones, etc., as the experience speaker box in daily life, people have higher and higher requirements. In the production of speaker boxes, it is necessary to ground the sounding unit and the steel sheet of the lower cover, and the resistance value needs to be less than 2 ohms, but the grounding point of the whole machine is on the side of the upper cover. The usual practice is to use conductive glue The conductive copper foil is attached to the steel sheet, and the tail of the conductive copper foil is led from the side of the speaker box to the upper cover position, and it is connected to the end of the whole machine and grounded. However, the resistance of the conductive adhesive is relatively large and unstable, and the overall conductivity is affected by the attachment state and fluctuates.

Therefore, it is necessary to provide a speaker box.

[ Technical issues ]

The purpose of the utility model is to provide a speaker box and terminal equipment to solve the problem of large instability in resistance and fluctuations in overall conductivity when the sounding unit, the lower cover steel sheet and the end of the whole machine are connected to the ground in the prior art. Technical issues.

【 Technical Solution 】

The technical scheme of the utility model is as follows:

A speaker box comprising an upper cover plate, a lower cover plate forming a containing space with the upper cover plate, a sound emitting unit contained in the containing space, fixed on the lower cover plate and covering the The first steel sheet of the sounding monomer and the conductive foam arranged between the first steel sheet and the sounding monomer, the upper cover plate is provided with a grounding feed point, and the upper cover plate is fixed There is a second steel sheet connected to the ground feed point, the speaker box further includes a conductive member, one end of the conductive member is connected to the first steel sheet, and the other end of the conductive member is connected to the The second steel sheet is connected.

Further, the conductive member includes a first contact portion connected with the first steel sheet, a second contact portion connected with the second steel sheet, and diagonally arranged between the first contact portion and the The connecting part between the second contact parts.

Further, the first contact portion is welded and fixed to the first steel sheet, and the second contact portion is welded and fixed to the second steel sheet.

Further, the first contact portion is transitionally connected with the connecting portion in a curved surface, and the second contact portion is transitionally connected with the connecting portion in a curved surface.

Further, the first contact portion is provided in a flat plate structure, and a contact point is provided on a plane of the first contact portion away from the second contact portion.

Further, the connection area between the second contact portion and the second steel sheet is smaller than the connection area between the first contact portion and the first steel sheet.

Further, the upper cover plate is provided with a through hole, and the second steel sheet includes a main body portion covering the through hole and an enclosing portion formed by bending and extending from the main body portion toward the first steel sheet, The enclosing part and the upper cover plate are injection molded.

Further, the plate surface of the main body portion opposite to the first steel sheet and the hole wall of the through hole form a limiting groove, and the second contact portion is located in the limiting groove.

Further, the orthographic projection of the second steel sheet and the orthographic projection of the first steel sheet at least partially overlap.

Further, a terminal device includes the aforementioned speaker box.

[ Beneficial effect ]

The beneficial effect of the utility model is that the second steel sheet is fixedly arranged on the upper cover plate, and the second steel sheet is connected with the grounding feed point; then, a conductive member is arranged between the first steel sheet and the second steel sheet to conduct One end of the through piece is connected with the first steel piece, and the other end of the conducting piece is connected with the second steel piece, thereby realizing the conduction between the second steel piece and the first steel piece, that is, realizing the first steel piece and sounding The conduction between the single unit and the ground feed point, the resistance value of the conduction element is low and stable, and it does not occupy the storage space. Using this technical solution solves the technical problems of large instability in resistance and fluctuations in overall conductivity when the vocal unit, the steel sheet of the lower cover and the end of the whole machine are connected to the ground in the prior art.

【 Explanation of the drawings 】

Figure 1 is a schematic diagram of the overall structure of a speaker box of the utility model;

Fig. 2 is a schematic diagram of an exploded structure of Fig. 1;

Fig. 3 is a schematic diagram of the structure of the conductive element;

Figure 4 is a cross-sectional view in the direction of A-A in Figure 1;

Fig. 5 is a partial enlarged schematic diagram of B in Fig. 4.

[ Embodiments of the present invention ]

It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present utility model will be described in detail with reference to the drawings and the embodiments.

It should be pointed out that the following detailed descriptions are all illustrative and are intended to provide further explanations for the application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

It should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and/or "including" are used in this specification, they indicate There are features, steps, operations, devices, components, and/or combinations thereof.

In the following, the utility model will be further described in conjunction with the drawings and embodiments. 1 to 3, a speaker box includes an upper cover plate 10, a lower cover plate 20 forming a receiving space 40 with the upper cover plate 10, a sounding unit 30 received in the receiving space 40, and fixed to the lower cover plate. The cover plate 20 covers the first steel sheet 50 of the sounding monomer 30 and the conductive foam 70 arranged between the first steel sheet 50 and the sounding monomer 30. The upper cover plate 10 is provided with a ground feed point, and the upper cover plate A second steel sheet 60 connected to the ground feed point is fixed on the speaker box. The speaker box also includes a conducting piece 80. One end of the conducting piece 80 is connected to the first steel piece 50, and the other end of the conducting piece 80 is connected to the second steel piece.片60连接。 Piece 60 is connected.

In the present invention, a second steel sheet 60 is fixedly arranged on the upper cover plate 10, and the second steel sheet 60 is connected to the grounding feed point; then, a conductive member is provided between the first steel sheet 50 and the second steel sheet 60 80. One end of the conductive member 80 is connected to the first steel sheet 50, and the other end of the conductive member 80 is connected to the second steel sheet 60, so as to realize the conduction between the second steel sheet 60 and the first steel sheet 50, That is, the conduction between the first steel sheet 50, the sounding unit 30 and the grounding feed point is realized. The resistance value of the conductive member 80 is low and stable, and does not occupy the storage space 40. The technical solution solves the problem of the sounding unit in the prior art. 30. When the steel sheet of the lower cover is connected to the end of the whole machine to be grounded, there is a technical problem that the resistance is relatively unstable and the overall continuity fluctuates.

3, the conductive member 80 includes a first contact portion 81 connected to the first steel sheet 50, a second contact portion 82 connected to the second steel sheet 60, and diagonally disposed on the first contact portion 81 and the second contact portion. The connecting portion 83 between the portions 82. Preferably, the first contact portion 81 is welded and fixed to the first steel sheet 50, and the second contact portion 82 is welded and fixed to the second steel sheet 60 to ensure that the first contact portion 81 is connected to the first steel sheet 50 and the second contact portion 82. The contact with the second steel sheet 60 is good.

Further, the first contact portion 81 is transitionally connected with the connecting portion 83 in a curved surface, and the second contact portion 82 is transitionally connected with the connecting portion 83 in a curved surface, so that the conductive member 80 is flexibly and stably clamped between the first steel sheet 50 and the second steel sheet. Between 60, it will not break easily due to oppression.

Moreover, the first contact portion 81 is arranged in a flat plate structure to ensure that the first contact portion 81 is in complete contact with the first steel sheet 50. At the same time, the first contact portion 81 is provided with a contact point 811 on a plane away from the second contact portion 82. The portion 81 is in an interference connection with the first steel sheet 50 through a contact point 811 to further ensure that the first contact is in contact with the first steel sheet 50.

In this embodiment, the connection area between the second contact portion 82 and the second steel sheet 60 is smaller than the connection area between the first contact portion 81 and the first steel sheet 50.

Referring to Figures 2, 4 and 5, the upper cover plate 10 is provided with a through hole 11, and the second steel sheet 60 includes a main body portion 61 covering the through hole 11 and a body portion 61 formed by bending and extending from the main body portion 61 toward the first steel sheet 50 The enclosing portion 62, the enclosing portion 62 and the upper cover plate 10 are injection-molded, thereby stably fixing the second steel sheet 60 and the upper cover plate 10 together to ensure the stability of the entire speaker box.

Preferably, the plate surface of the main body 61 opposite to the first steel sheet 50 and the hole wall of the through hole 11 form a limiting groove 90, and the second contact portion 82 is located in the limiting groove 90, that is, the limiting groove 90 can face the second The contact portion 82 limits the range.

The orthographic projection of the second steel sheet 60 and the orthographic projection of the first steel sheet 50 at least partially overlap, that is, the second steel sheet 60 is directly above the first steel sheet 50, so that the conductive member 80 and the first steel sheet 50, The assembly of the second steel sheet 60 is convenient and stable.

Furthermore, the present invention also provides a terminal device, which includes the aforementioned speaker box.

It should be noted that the terms "first" and "second" in the specification and claims of the application and the above-mentioned drawings are used to distinguish similar objects, and not necessarily used to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those clearly listed. Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment.

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

Claims

A speaker box comprising an upper cover plate, a lower cover plate forming a housing space with the upper cover plate, a sound emitting unit housed in the housing space, fixed on the lower cover plate and covering the The first steel sheet of the sound-producing monomer and the conductive foam arranged between the first steel sheet and the sound-producing monomer, the upper cover plate is provided with a ground feed point, characterized in that the upper A second steel sheet connected to the ground feed point is fixed on the cover, the speaker box further includes a conducting piece, one end of the conducting piece is connected to the first steel piece, and the conducting piece The other end is connected with the second steel sheet.
The speaker box according to claim 1, wherein the conductive member includes a first contact portion connected with the first steel sheet, a second contact portion connected with the second steel sheet, and an oblique A connecting portion provided between the first contact portion and the second contact portion.
The speaker box according to claim 2, wherein the first contact portion is welded and fixed to the first steel sheet, and the second contact portion is welded and fixed to the second steel sheet.
The speaker box according to claim 3, wherein the first contact portion is transitionally connected with the connecting portion in a curved surface, and the second contact portion is transitionally connected with the connecting portion in a curved surface.
The speaker box according to claim 4, wherein the first contact portion is provided in a flat plate structure, and a contact point is provided on a plane of the first contact portion away from the second contact portion.
The speaker box according to claim 5, wherein the connection area between the second contact portion and the second steel sheet is smaller than the connection area between the first contact portion and the first steel sheet.
The speaker box according to any one of claims 2-5, wherein the upper cover plate is provided with a through hole, and the second steel sheet includes a main body covering the through hole and a main body The enclosed portion is formed by bending and extending toward the first steel sheet, and the enclosed portion and the upper cover plate are injection-molded.
The speaker box according to claim 7, wherein the plate surface of the main body opposite to the first steel sheet and the hole wall of the through hole form a limiting groove, and the second contact portion is located at the In the limit slot.
The speaker box according to claim 1, wherein the orthographic projection of the second steel sheet and the orthographic projection of the first steel sheet at least partially overlap.
A terminal device, characterized in that the terminal device comprises the speaker box according to any one of claims 1-9.