WO2020082996A1

WO2020082996A1 - Loudspeaker

Info

Publication number: WO2020082996A1
Application number: PCT/CN2019/108991
Authority: WO
Inventors: 李泉儒; 李振军; 高远; 李承伟
Original assignee: 歌尔股份有限公司
Priority date: 2018-10-26
Filing date: 2019-09-29
Publication date: 2020-04-30
Also published as: CN109348374A

Abstract

Disclosed in the present invention is a loudspeaker. The loudspeaker comprises a housing provided with an accommodating cavity, and a loudspeaker unit accommodated in the accommodating cavity; the loudspeaker unit comprises a magnetically-conductive yoke, an assembly structure formed by fitting of a convex structure and a concave structure being provided between the magnetically-conductive yoke and the housing corresponding to the magnetically-conductive yoke. The loudspeaker provided by the present invention has an assembly structure formed by fitting of the convex structure and the concave structure between the magnetically-conductive yoke and the housing corresponding to the magnetically-conductive yoke, so that the colloid is protected from a lateral shearing force, greatly reducing the possibility of colloid breakage between the housing and the magnetically-conductive yoke, enabling the housing and the magnetically-conductive yoke to be bonded and fixed more closely, increasing the sealing property of the product, and also improving the convenience of colloid application.

Description

A speaker

Technical field

The present invention relates to the technical field of electroacoustic products, and more particularly, to a speaker.

Background technique

With the rapid development of science and technology, especially the rapid development of mobile communication technology, audio equipment is gradually known by people with the widespread use of electronic products such as mobile phones, PADs, computers, etc., and people have become more and more aware of the audio equipment equipped with electronic equipment. With higher requirements, whether audio equipment is easily damaged directly affects the user's intuitive feeling when using these mobile electronic devices.

Loudspeaker is an important acoustic component of portable electronic equipment, used to complete the conversion between electrical signals and sound signals, is an energy conversion device. The speaker usually includes a housing and a vibration system and a magnetic circuit system housed in the housing. The magnetic circuit system includes a magnetic yoke. For common speakers, the connection between the housing and the magnetic yoke also adopts the traditional surface-to-surface contact bonding. This structure makes the colloid not only be affected by the lateral shear force but also the longitudinal pressure, and the magnetic yoke is prone to occur. The colloid between the shell and the shell breaks. After the colloid breaks, the adhesion between the magnetic yoke and the shell is invalid, the product leaks, and the product cannot meet the air tightness requirements, resulting in the product being unable to be used normally.

Therefore, in order to overcome the defects in the prior art, a new type of speaker needs to be provided.

Summary of the invention

The purpose of the present invention is to provide a loudspeaker that protects the colloid from lateral shearing forces, greatly reduces the possibility of colloidal fracture between the housing and the magnetic yoke, and at the same time enables the housing and the magnetic yoke to be more tightly fixed , Increase the sealing of the product, and also improve the convenience of applying colloid.

In order to achieve the above object, the present invention provides a loudspeaker, including: a housing formed with an accommodating cavity and a loudspeaker monomer accommodated in the accommodating cavity; the loudspeaker monomer includes a magnetically permeable yoke; An assembly structure formed by the cooperation of the convex structure and the concave structure is included between the corresponding shells of the magnetic yoke.

In addition, preferably, the convex structure is formed on the magnetic yoke, the convex structure is a boss extending outward from the bottom surface of the magnetic yoke, and the concave structure is formed on the housing In the above, the recessed structure is a recess formed by recessing the inner side surface of the housing; or,

The raised structure is formed on the housing, the raised structure is a boss extending outward from the inner surface of the housing, the recessed structure is formed on the magnetic yoke, and the recessed structure is The bottom surface of the magnetic yoke is formed by a recess formed inward.

In addition, a preferred solution is that an assembly gap is left between the surface of the convex structure and the surface of the concave structure, and a glue storage groove is formed in the assembly gap, and the glue storage groove is filled with a sealant.

In addition, preferably, the glue storage groove is located between the top surface of the convex structure and the bottom surface of the concave structure.

In addition, a preferred solution is that the bottom surface of the magnetic yoke and the corresponding inner surface of the housing are bonded and fixed.

In addition, preferably, the assembly structure is a continuous ring structure or a segmented structure.

In addition, a preferred solution is that a through hole penetrating the inner and outer surfaces of the housing is formed on the housing corresponding to the magnetic yoke, and the vertical projection of the through hole is located in the vertical projection area of the magnetic yoke; The assembly structure is located on the edge of the magnetic yoke outside the edge of the through hole.

In addition, preferably, the bottom surface edge of the magnetic yoke and the inner surface of the housing corresponding to the edge of the through hole are adhered and fixed.

In addition, preferably, the bottom edge of the magnetic yoke is formed with a depressed flange, and other parts of the bottom surface of the magnetic yoke are formed with a ridge. The ridge and the flange are connected by a slope transition. The assembly structure is located on the edge.

In addition, a preferred solution is that the housing is a single speaker housing or a speaker module housing.

The beneficial effects of the present invention are as follows:

1. The loudspeaker provided by the present invention is equipped with an assembly structure formed by the cooperation of the convex structure and the concave structure between the magnetic conductive yoke and the casing corresponding to the magnetic conductive yoke, so that the colloid does not need to be subjected to lateral shear forces, which greatly reduces the casing and The possibility of colloidal collapsing between the magnetic yokes at the same time makes the housing and the magnetic yoke more tightly connected and fixed, which improves the sealing of the product.

2. The speaker provided by the present invention has an assembly gap between the surface of the convex structure and the surface of the concave structure, and a glue storage groove is formed in the assembly gap, and the glue storage groove is filled with a sealant, which is sealed by The glue can directly fix and fix the magnetic yoke and the bottom case, which improves the convenience of applying the colloid; at the same time, it can prevent too much glue from being generated when the magnetic yoke and the shell are bonded and fixed, keeping the bottom of the speaker flat and beautiful, and easy to assemble.

3. The speaker provided by the present invention is formed with a through hole penetrating the inner and outer surfaces of the housing at a position corresponding to the magnetic yoke of the housing. The magnetic yoke is directly exposed outside the housing, and the speaker has better heat dissipation performance.

4. In the present invention, the housing part corresponding to the magnetic yoke can be provided as a steel sheet, so that the volume of the rear acoustic cavity can be increased, the rear acoustic cavity can be maximized as much as possible, and the acoustic performance of the speaker can be improved. In addition, the shell part corresponding to the magnetic yoke can also be provided as a combination of a steel sheet and an injection molded case. The magnetic yoke can correspond to an injection molded case or a steel sheet. It is conducive to the heat dissipation of the rear acoustic cavity; when it corresponds to a steel sheet, the heat generated by the speaker unit can be directly dissipated through the steel sheet, which effectively improves the overall heat dissipation capacity of the speaker and facilitates the speaker to work under high power for a long time.

BRIEF DESCRIPTION

The specific embodiments of the present invention will be further described in detail below with reference to the drawings.

FIG. 1 shows a schematic top view of a combination of a speaker according to a preferred embodiment of the present invention.

FIG. 2 shows a C-C cross-sectional view of FIG. 1.

FIG. 3 shows an enlarged view of part A of FIG. 2.

DESCRIPTION OF REFERENCE NUMERALS: 1. shell; 2. speaker unit; 3. magnetic yoke; 4. concave structure; 5. raised structure; 6. rubber storage tank

detailed description

In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is obvious that these embodiments can also be implemented without these specific details.

In order to explain the present invention more clearly, the present invention will be further described below with reference to preferred embodiments and drawings. Similar parts in the drawings are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than limiting, and should not be used to limit the protection scope of the present invention.

In view of the prior art, the connection between the speaker shell and the magnetic yoke also adopts the traditional surface-to-surface contact bonding. This structure makes the gel subject to both lateral shear force and longitudinal pressure, and the magnetic yoke is prone to occur. The colloid between the shell and the shell is broken. After the colloid is broken, the adhesion between the magnetic yoke and the shell fails, which will cause the product to leak air and fail to meet the air tightness requirements of the product, resulting in the product not being able to be used normally. The invention provides a loudspeaker, which protects the colloid from lateral shearing force, greatly reduces the possibility of colloid fracture between the casing and the magnetic yoke, and at the same time enables the casing and the magnetic yoke to be more closely combined and fixed, increasing The product's tightness also improves the convenience of applying colloid.

Specifically, with reference to the accompanying drawings for detailed description, FIG. 1 shows a schematic top plan view of a combination of speaker modules according to a preferred embodiment of the present invention; FIG. 2 shows a CC cross-sectional view of FIG. 1; and FIG. 3 shows part A of FIG. Zoom in.

In the present invention, the speaker includes a housing formed with an accommodating cavity and a speaker monomer accommodated in the accommodating cavity, and the speaker monomer includes a magnetic yoke. The magnetic conducting yoke and the housing corresponding to the magnetic conducting yoke include an assembling structure formed by cooperation of a convex structure and a concave structure. Further, the speaker may be a single speaker or an integrated speaker module, which is not limited by the present invention. The speaker module is taken as an example to describe the speaker of the present invention in detail below.

As shown in conjunction with FIGS. 1 to 3, a speaker module includes a housing 1 formed with a receiving cavity and a speaker monomer 2 housed in the receiving cavity, the speaker monomer 2 includes a magnetically conductive yoke 3, An assembly structure formed by cooperation between the convex structure 5 and the concave structure 4 is included between the magnetic yoke 3 and the housing 1 corresponding to the magnetic yoke. The assembly structure formed by matching the convex structure 5 and the concave structure 4 between the magnetic conductive yoke 3 and the housing 1 corresponding to the magnetic conductive yoke can prevent the colloid from being subjected to lateral shearing force and reduce the housing and the magnetic conductive yoke The possibility of colloidal fracture between.

With reference to the illustrated structure, in this embodiment, the convex structure 5 is formed on the magnetic conductive yoke 3, and the convex structure 5 is a boss extending outward from the bottom surface of the magnetic conductive yoke 3. A recessed structure 4 is formed on the housing 1, and the recessed structure 4 is a groove formed by recessing the inner surface of the housing 1 inward; or, those skilled in the art should understand that in other embodiments, the The raised structure may also be formed on the housing. The raised structure is a boss extending outward from the inner surface of the housing. The recessed structure is formed on the magnetic yoke. The recessed structure is The bottom surface of the magnetic conductive yoke is formed by a recess formed inward, which is not limited in the present invention.

On the basis of the above preferred embodiment, as shown in conjunction with FIGS. 2 and 3, an assembly gap is left between the surface of the convex structure and the surface of the concave structure, and a glue storage groove is formed in the assembly gap The glue storage tank is filled with sealant, and the sealant can directly bond and fix the magnetic yoke and the bottom shell, which improves the convenience of applying the gel. In addition, in order to prevent excessive overflow of glue when the magnetic yoke and the housing are bonded and fixed, to keep the bottom of the speaker flat and beautiful, and easy to assemble, it is further preferred that the rubber storage groove 6 is located on the top surface of the convex structure 5 and the depression Between the bottom surfaces of structure 4. Preferably, in the thickness direction of the speaker, the length of the convex structure 5 can be up to 0.05-0.2 mm, the length of the concave structure 4 can be up to 0.05-0.2 mm, and the length of the glue storage groove 6 can be up to 0.05 -0.1mm. This not only controls the size of the loudspeaker in the thickness direction, but also ensures the overall lightness and thinness of the loudspeaker, and also ensures that the magnetic yoke and the housing can be tightly combined and fixed.

In addition, in some preferred embodiments of the present invention, in order to ensure a tighter connection and fixation between the housing and the magnetic yoke and increase product tightness, the bottom surface of the magnetic yoke 3 and the corresponding inner surface of the housing 1 Bonding and fixing. Further, the assembly structure is a continuous ring structure, or a segmented structure, which enlarges the bonding area between the housing 1 and the magnetic yoke 3, and also increases the amount of glue applied between the housing 1 and the magnetic yoke 3 , Thereby increasing the adhesion strength between the housing 1 and the magnetic yoke 3.

In the prior art, audio equipment has always had the problem of difficulty in heat dissipation. Another preferred embodiment provided by the present invention is formed with a through hole penetrating the inner and outer surface of the housing corresponding to the magnetic yoke on the housing. The vertical projection is located in the vertical projection area of the magnetic yoke; the assembly structure is located on the edge of the magnetic yoke outside the edge of the through hole. The outer surface of the magnetic yoke is exposed on the outer side of the housing and is flush with the lower end surface of the housing. This structure not only ensures the flat and beautiful bottom of the speaker module, easy to assemble, but also directly exposes the magnetic yoke to the housing, effectively improving The overall cooling capacity of the speaker.

Specifically in this embodiment, a convex structure in the assembly structure is formed on the magnetic yoke, the convex structure is a boss extending outward from the bottom of the edge of the magnetic yoke, and the concave structure Formed on the through hole, the recessed structure is a groove formed by recessing the inner surface of the edge of the through hole; or, those skilled in the art should understand that in other embodiments, the protrusion A structure may also be formed on the through hole. The convex structure is a boss extending outward from the inner surface of the edge of the through hole. The concave structure is formed on the magnetic yoke. The concave structure is The bottom surface of the edge of the magnetic conductive yoke is formed by a recess formed inward.

On the basis of the above embodiment, an assembly gap is left between the surface of the convex structure and the surface of the concave structure, and a glue storage groove is formed in the assembly gap, and the glue storage groove is filled with sealant, further Preferably, the glue storage groove is located between the top surface of the convex structure and the bottom surface of the concave structure.

In addition, the bottom surface of the edge of the magnetic yoke and the inner surface of the housing corresponding to the edge of the through hole are adhesively fixed; further, the assembly structure is a continuous ring structure, or a segmented structure; In the thickness direction, the length of the convex structure can reach 0.05-0.2 mm, the length of the concave structure can reach 0.05-0.2 mm, and the length of the glue storage tank can reach 0.05-0.1 mm. The present invention does not limit this.

Further, in this another preferred embodiment, a concave edge is formed at the edge of the bottom surface of the magnetic yoke, and other parts of the bottom surface of the magnetic yoke are formed with a ridge between the ridge and the edge Through the inclined transition connection, the assembly structure is located on the pressing edge.

Those of ordinary skill in the art should understand that the technical solutions described in the foregoing embodiments can still be combined and modified on the basis of the foregoing description, and the present invention does not limit this.

It should be noted that, on the basis of the above embodiment, the housing part corresponding to the magnetic yoke 3 of the present invention may be an injection molded housing, may be an integral steel sheet, or may be a combination of a steel sheet and an injection molded housing . Among them, when the steel sheet is sealed and combined with the housing as a part of the housing, it not only ensures the structural strength of the housing, but also improves the overall heat dissipation effect of the speaker.

In order to achieve the object of the present invention, the present invention also provides another preferred embodiment of the speaker module structure, wherein the housing part corresponding to the same magnetic yoke is an integral steel sheet, the magnetic yoke and the same magnetic The integral steel sheet corresponding to the yoke includes an assembly structure formed by cooperation of the convex structure and the concave structure. In this other embodiment, the overall steel sheet expands the volume of the rear acoustic cavity of the speaker module to maximize the volume of the rear acoustic cavity. Those skilled in the art understand that the larger the volume of the rear acoustic cavity of the speaker, the lower the bass effect. The better. Therefore, the speaker module provided by the other preferred embodiment can achieve good acoustic performance; at the same time, the heat generated by the monomer can be directly dissipated through the steel sheet, which can effectively improve the overall heat dissipation capacity of the speaker.

In order to achieve the object of the present invention, the present invention also provides another preferred embodiment of the speaker module structure. In the speaker module provided in this preferred mode, the housing part corresponding to the same conductive yoke is a steel sheet and In the combination of the injection-molded housing, an assembly structure formed by the cooperation of the convex structure and the concave structure is formed between the magnetic conductive yoke and the housing corresponding to the magnetic conductive yoke. The shell part corresponding to the position of the magnetic yoke on the shell may be a steel sheet or an injection molded case. When the position corresponding to the magnetic yoke on the shell is a steel sheet, the steel sheet and the magnetic yoke Direct correspondence, better heat dissipation; when the position of the corresponding magnetic yoke on the shell is an injection molded case, the steel sheet helps to dissipate heat in the rear acoustic cavity. In this regard, the present invention is not limited.

In this preferred embodiment, the steel sheet and the magnetic yoke are made of the same material, and are all SPCG or SPCC steel materials. In other embodiments of the present invention, the steel sheet may also use other magnetically conductive steel materials.

Those skilled in the art should understand that the above several embodiments can also be combined. For example, when the housing part corresponding to the magnetic yoke is an integral steel sheet, the inside and outside of the housing are formed at the position corresponding to the magnetic yoke The through hole on the surface, the vertical projection of the through hole is located in the vertical projection area of the magnetic yoke; the assembly structure is located on the edge of the magnetic yoke outside the edge of the through hole, or the housing corresponding to the magnetic yoke When a part is a combination of a steel sheet and an injection molded case, a through hole penetrating the inner and outer surfaces of the housing is formed at a position corresponding to the magnetic yoke, and the vertical projection of the through hole is located in the vertical projection area of the magnetic yoke; The assembling structure is located on the edge of the magnetic yoke outside the edge of the through hole, which is not limited in the present invention.

With reference to the above preferred embodiments, those skilled in the art can understand that, for the outer structures and sizes of the bosses, grooves and through holes, the above embodiments only provide a preferred outer structure suitable for the existing speaker module structure And size design. In the actual application process, for the shape structure of the boss, groove and through hole, those skilled in the art can determine the structure of the boss, groove and through hole according to the actual shape of the module housing; for the boss, groove and through hole The shape structure and size of the hole can be designed according to actual conditions by those skilled in the art.

The above embodiment is described in detail by taking the speaker module as an example. When it is a speaker unit, some speaker units will be combined with a bottom shell at the lower end of the magnetic yoke to protect the magnetic yoke. An assembly structure formed by the cooperation of the convex structure and the concave structure is formed between the corresponding shells of the magnetic yoke. The assembly structure is basically the same as that in the above embodiment, so it will not be repeated here.

It should be noted that the magnetic circuit system provided by the present invention may be a five-magnetic circuit system, including a central magnet located in the middle and a central magnetic yoke fixed therewith, and four side magnets arranged around the central magnet Combined with a fixed ring side magnetic yoke. In addition, the magnetic circuit system provided by the present invention may also be a single magnetic circuit system or a three magnetic circuit system. Among them, the advantages of the single magnetic circuit system and the three magnetic circuit system relative to the prior art are the same as the advantages of the five magnetic circuit system relative to the prior art, and will not be repeated here.

Obviously, the above examples of the present invention are only examples for clearly illustrating the present invention, rather than limiting the embodiments of the present invention. For those of ordinary skill in the art, based on the above description, they can also do There are other different forms of changes or changes that cannot be exhaustively listed here. Any obvious changes or changes derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

A speaker, including:

A housing formed with a containing cavity and a speaker unit contained in the containing cavity;

The speaker unit includes a magnetically conductive yoke;

It is characterized by,

The magnetic conducting yoke and the housing corresponding to the magnetic conducting yoke include an assembling structure formed by cooperation of a convex structure and a concave structure.
The speaker according to claim 1, wherein the convex structure is formed on the magnetic yoke, the convex structure is a boss extending outward from the bottom surface of the magnetic yoke, the recess A structure is formed on the casing, and the concave structure is a groove formed by inward depression of the inner surface of the casing; or,

The raised structure is formed on the housing, the raised structure is a boss extending outward from the inner surface of the housing, the recessed structure is formed on the magnetic yoke, and the recessed structure is The bottom surface of the magnetic yoke is formed by a recess formed inward.
The speaker according to claim 2, wherein an assembly gap is left between the surface of the convex structure and the surface of the concave structure, a glue storage groove is formed in the assembly gap, and the glue storage groove is filled with Sealant.
The speaker according to claim 3, wherein the glue storage groove is located between the top surface of the convex structure and the bottom surface of the concave structure.
The speaker according to claim 1, wherein the bottom surface of the magnetic yoke and the corresponding inner surface of the housing are bonded and fixed.
The speaker according to claim 1, wherein the assembly structure is a continuous ring structure or a segmented structure.
The speaker according to claim 1, wherein a through hole penetrating the inner and outer surfaces of the housing is formed on the housing corresponding to the magnetic yoke, and the vertical projection of the through hole is located in the vertical direction of the magnetic yoke Within the projection area; the assembly structure is located on the edge of the magnetic yoke outside the edge of the through hole.
The loudspeaker according to claim 7, wherein the edge of the bottom surface of the magnetic yoke and the inner surface of the housing corresponding to the edge of the through hole are adhered and fixed.
The loudspeaker according to claim 7, characterized in that a concave flange is formed at the edge of the bottom surface of the magnetic yoke, and other parts of the bottom surface of the magnetic yoke are formed with a ridge between the ridge and the flange Through the inclined transition connection, the assembly structure is located on the pressing edge.
The loudspeaker according to claim 1 or 7, wherein the housing is a single loudspeaker housing or a loudspeaker module housing.