CN215300904U

CN215300904U - Loudspeaker box

Info

Publication number: CN215300904U
Application number: CN202120894215.8U
Authority: CN
Inventors: 任璋; 钟志威
Original assignee: AAC Acoustic Technologies Shenzhen Co Ltd; AAC Microtech Changzhou Co Ltd
Current assignee: AAC Technologies Holdings Shenzhen Co Ltd; AAC Microtech Changzhou Co Ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-12-24
Anticipated expiration: 2031-04-26

Abstract

The utility model provides a loudspeaker box, which comprises a shell with a bracket and a sounding monomer, wherein the sounding monomer comprises a basin frame, a vibration system with a vibrating diaphragm and a magnetic circuit system with a lower clamping plate; the support comprises a support body, a support extension part bent and extended from the support body, a first fixing part bent and extended from the support extension part to the direction far away from the support body, and a second fixing part extended from the periphery of the first fixing part to the direction far away from the support body along the peripheral side of the basin stand, one side of the sounding monomer provided with the vibrating diaphragm is supported and fixed on the first fixing part and is spaced from the support body, and the sounding monomer and the support together form a front sound cavity; the second fixing part is fixed on one side of the lower clamping plate close to the shell, the second fixing part and the lower clamping plate form fixed connection at the peripheral side position of the sounding single body, and the sounding single body, the lower cover, the upper cover and the support form a rear sound cavity together in a surrounding mode. Compared with the prior art, the utility model discloses a loudspeaker box's bulk strength is high and the reliability is high.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic conversion field especially relates to an apply to speaker box of portable mobile electronic product.

[ background of the invention ]

The loudspeaker box is widely applied to portable mobile electronic products, such as mobile phones, so that audio signals are converted into sound to be played, the loudspeaker box is high in loudness, and the low-frequency sound effect is good.

The loudspeaker box in the related art comprises a support, an upper cover, a lower cover and a sound generating unit, wherein the upper cover and the lower cover are respectively arranged on two opposite sides of the support in a covering mode, and the support, the upper cover and the lower cover jointly enclose an accommodating space. The sound production monomer accept in the accommodating space, the sound production monomer is including the vibrating diaphragm that is used for the vibration sound production, the sound production monomer is close to one side support of vibrating diaphragm is fixed in the support.

However, the speaker box of the related art forms a fixing structure by the sound generating unit and the bracket through a gluing fixing manner, which is not high in the overall strength of the speaker box, and under the condition that the speaker box falls, the risk that the bracket is separated from the sound generating unit easily occurs, and therefore, the reliability of the speaker box is low due to the structure.

Therefore, there is a need to provide a new speaker box to solve the above technical problems.

[ Utility model ] content

An object of the utility model is to provide a speaker box that bulk strength is high and the reliability is high.

In order to achieve the above object, the present invention provides a speaker box, which comprises a housing having an accommodating space and a sounding unit accommodated in the accommodating space, wherein the sounding unit comprises a frame, a vibration system fixed on the frame, and a magnetic circuit system for driving the vibration system to vibrate and sound; the vibration system comprises a vibration diaphragm for vibrating and sounding, the magnetic circuit system comprises a lower clamping plate fixed on the basin frame, the shell comprises a support for supporting the sounding single body, a lower cover, an upper cover and a sounding port, the lower cover and the upper cover are respectively arranged on two opposite sides of the sounding single body along the vibration direction of the vibration diaphragm, and the support, the lower cover and the upper cover jointly enclose the accommodating space; the support comprises a support body arranged opposite to the sounding monomer at intervals, a support extension part bent and extended from the periphery of the support body to the sounding monomer, and a first fixing part bent and extended from the support extension part to the direction far away from the support body, one side of the sounding monomer provided with the vibrating diaphragm is supported and fixed on the first fixing part and is spaced from the support body, the sounding monomer and the support together form a front sound cavity, and the front sound cavity is communicated with the outside through a sound outlet; the bracket also comprises a second fixing part which extends from one side of the first fixing part far away from the extension part of the bracket along the circumferential side of the sounding single body to the direction far away from the bracket body, and the second fixing part and the lower clamping plate form fixed connection at the circumferential side position of the sounding single body; one end of the upper cover is fixed on the lower cover, and the other end of the upper cover is fixed on the bracket; the sound production unit, the lower cover, the upper cover and the bracket enclose a rear sound cavity together.

Preferably, the lower cover including set up in the sound production monomer is kept away from the lower apron of vibrating diaphragm one side and by the lower cover lateral wall that the periphery of lower apron is buckled and is extended, the sound outlet is seted up in the lower cover lateral wall, the sound production monomer is close to one side butt of sound outlet in the lower cover lateral wall, the lower cover lateral wall with second fixed part interval, just the support is close to one side of sound outlet is equipped with into the breach of dodging that the sound outlet abdicates.

Preferably, the bracket is made of a metal material.

Preferably, the second fixing portion is fixed to the lower plate by welding.

Preferably, the second fixing portions include two second fixing portions, and the two second fixing portions are spaced from each other and located on the same side of the sound generating unit.

Preferably, the sounding unit is of a rectangular structure, and the two second fixing portions are located on one side of a long axis of the sounding unit.

Preferably, the support still include by the periphery of first fixed part is followed week side of basin frame is to keeping away from the spacing portion of support that the direction of vibrating diaphragm extends, the spacing portion of support includes two, two spacing portion of support is located the relative both sides of the free minor axis of sound production and butt in the sound production monomer.

Preferably, the vibrating diaphragm includes the vibration portion, by the ring portion that rolls over that the periphery of vibration portion is buckled and is extended and by roll over the ring portion and outwards keep away from the vibrating diaphragm fixed part that the direction of vibration portion is buckled and is extended, vibrating diaphragm fixed part veneer is fixed in first fixed part, roll over the ring portion and be to keeping away from the sunken arc structure that forms of support body direction, the support extension is followed the vibration direction of vibrating diaphragm to the free orthographic projection of sound production falls into completely roll over the ring portion.

Preferably, one end of the upper cover is fixed to the side wall of the lower cover, and the other end of the upper cover is fixed to the bracket extension part.

Preferably, the lower cover plate is rectangular, the side walls of the lower cover comprise four pieces which are sequentially connected end to end, one side of one side wall of the lower cover, which is far away from the lower cover plate, forms a sound outlet part, the sound outlet part is accommodated in the avoiding gap, and the sound outlet part is provided with the sound outlet penetrating through the sound outlet part; one side of the sounding monomer, which is close to the sounding port, is fixed on the sounding part; one side of the support body close to the sound outlet is fixed on the sound outlet.

Compared with the prior art, the loudspeaker box of the utility model is provided with the lower clamping plate fixed on the basin frame in the magnetic circuit system of the sounding monomer, and the bracket is provided with the first fixing part and the second fixing part, the second fixing part extends from the periphery of the first fixing part along the peripheral side of the basin frame in the direction away from the vibrating diaphragm, and one side of the sounding monomer provided with the vibrating diaphragm is supported and fixed on the first fixing part and is separated from the bracket body; the second fixing part and the lower clamping plate form fixed connection at the peripheral side position of the sounding single body. In the structure, the second fixing part of the support forms a fixing structure through the lower clamping plate, so that the support and the basin frame of the sounding monomer form a fixing structure, and in addition, the sounding monomer also forms a fixing structure with the first fixing part of the support on one side of the vibrating diaphragm, so that the shell forms a firm integral structure through the support and the sounding monomer, the integral strength of the loudspeaker box is improved, and the loudspeaker box is high in reliability.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic perspective view of a speaker box according to the present invention;

fig. 2 is an exploded schematic view of a part of the three-dimensional structure of the speaker box of the present invention;

FIG. 3 is a sectional view taken along line A-A of FIG. 1;

FIG. 4 is an enlarged view of the portion B of FIG. 3;

fig. 5 is a schematic perspective view of the speaker box of the present invention with a part of the lower cover removed.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a speaker box 100.

The speaker box 100 includes a housing 1 having an accommodating space 10 and a sound generating unit 2 accommodated in the accommodating space 10.

The sounding unit 2 comprises a frame 21, a vibration system 22 fixed on the frame 21, and a magnetic circuit system 23 for driving the vibration system 22 to vibrate and sound.

The vibration system 22 includes a diaphragm 221 for generating sound by vibration and a voice coil for driving the diaphragm 221 to generate sound by vibration. Specifically, the diaphragm 221 further includes a vibrating portion 2211, a bent portion 2212 bent and extended from the periphery of the vibrating portion 2211, and a diaphragm fixing portion 2213 bent and extended from the bent portion 2212 in a direction away from the vibrating portion 2211.

The magnetic circuit system 23 includes a lower plate 231 fixed to the frame 21 and a magnetic steel 232 fixed to the lower plate 231 and having a magnetic gap. The magnetic circuit system 23 of the lower plate 231 forms a fixed structure with the basin frame through the lower plate 231. The voice coil is inserted into the magnetic gap so that the magnetic circuit system 23 drives the voice coil to vibrate.

The casing 1 includes a support 11 for supporting the sound generating unit 2, a lower cover 12 and an upper cover 13 respectively disposed on two opposite sides of the sound generating unit 2 along the vibration direction of the diaphragm 221, and a sound outlet 120 penetrating through the lower cover and the upper cover. The bracket 11, the lower cover 12 and the upper cover 13 together enclose the accommodating space 10.

The support 11 include with the relative support body 111 that sets up in 2 intervals of sound production monomer, by the periphery of support body 111 to the support extension 112 that the sound production monomer 2 was buckled and is extended, by support extension 112 is to keeping away from the first fixed part 113 that the direction of support body 111 was buckled and is extended and by first fixed part 113 is kept away from one side of support extension 112 is followed all sides of sound production monomer 2 is to keeping away from the second fixed part 114 that the direction of support body 111 extended.

One side of the sound generating unit 2, which is provided with the diaphragm 221, is supported and fixed on the first fixing portion 113 and spaced from the bracket body 111. Specifically, the diaphragm fixing portion 2213 is supported and fixed to the first fixing portion 113. In this embodiment, the diaphragm fixing portion 2213 is fixed to the first fixing portion 113 by gluing.

The side of the sound generating unit 2, which is provided with the vibrating diaphragm 221, is spaced from the support body 111, so that the sound generating unit 2 and the support 11 jointly form a front sound cavity. The diaphragm 221 is accommodated in the front acoustic cavity 101. The sound outlet 120 communicates the front sound chamber 101 with the outside. The front acoustic cavity 101 improves the high frequency acoustic performance of the loudspeaker enclosure 100.

The second fixing portion 114 and the lower clamp plate 223 are fixedly connected to each other at a position on the peripheral side of the sound generating unit 2. Specifically, the second fixing portion 114 is fixed to a side of the lower plate 231 close to the housing 1. This structure forms a fixed structure with the frame 21 of the sound generating unit 2 by the second fixed portion 114 of the holder 11 and the lower clamp plate 231; in addition, the sound generating unit 2 and the first fixing portion 113 of the bracket 11 also form a fixing structure on the side of the diaphragm 221, so that the housing 1 and the sound generating unit 2 form a firm integral structure, thereby improving the overall strength of the speaker box 100 and ensuring high reliability of the speaker box 100.

The bracket 11 is made of metal material. On the premise of ensuring the structural strength of the shell 1, compared with the traditional plastic support structure, the loudspeaker box 1 can be designed to be thinner, and the sounding units 2 can be assembled effectively, so that the cavity volume of the accommodating space in the shell 1 is greatly increased, and the acoustic performance of the loudspeaker box 100 is improved.

In this embodiment, the second fixing portion 114 is fixed to the lower plate 231 by welding. This structure increases the bonding strength between the second fixing portion 114 and the lower clamp plate 231, and improves the overall strength of the speaker box 100, thereby improving the reliability of the speaker box 100.

In order to further enhance the overall strength of the speaker box 100, in the present embodiment, the second fixing portions 114 include two, and the two second fixing portions 114 are spaced apart from each other and are located on the same side of the sound generating unit 2. The two second fixing portions 114 make the stress of the joint uniform and contribute to improving the stability of welding, thereby improving the reliability of the speaker box 100.

In order to better position and assemble the sounding unit 2 to the housing 1, in this embodiment, the support 11 further includes a support limiting portion 115 extending from the periphery of the first fixing portion 113 along the peripheral side of the frame 21 in a direction away from the diaphragm 221. The support limiting portion 115 is used for positioning the sounding unit 2 during assembly, and is also fixed to the housing 1 together with the second fixing portion 114.

In this embodiment, the sounding unit 2 has a rectangular structure, and the two second fixing portions 114 are located on one side of a long axis of the sounding unit 2. This structure allows the second fixing portion 114 to be located at a position having a sufficient space to facilitate a welding operation in assembly. The support limiting parts 115 comprise two support limiting parts 115 which are located on two opposite sides of the short shaft of the sound generating single body 2 and are abutted to the sound generating single body 2. The support limiting portion 115 and the second fixing portion 114 position and limit the sound generating unit 2 in two directions of the major axis and the minor axis, and this structure makes the whole structure of the speaker box 100 compact, which is beneficial to improving the whole strength of the speaker box 100 and improving the reliability.

The lower cover 12 includes a lower cover 121 disposed on a side of the sound generating unit 2 away from the diaphragm 221, and a lower cover sidewall 122 bent and extended from a periphery of the lower cover 121.

The lower cover plate 121 and the lower cover sidewall 122 may be separated from each other or may be integrally manufactured. In this embodiment, the lower cover plate 121 and the lower cover sidewall 122 are integrally formed.

The sound outlet 120 is opened in the lower cover side wall 122. That is, the lower cover sidewall 122 is provided with the sound outlet 120 therethrough. The sound outlet 120 communicates the front sound chamber 101 with the outside. This structure forms the side sound emission structure of speaker box 100 for the air smoothness with the external world that improves the side sound emission makes the audio quality of speaker box 100 promotes.

The sounding monomer 2 is close to one side butt of the sounding port 120 in the lower cover side wall 122, the lower cover side wall 122 is spaced from the second fixing portion 114, and the support 11 is close to one side of the sounding port 120 and is provided with an avoiding notch 110 for the sounding port 120 to yield.

The sound outlet 120 may be directly opened on the lower cover sidewall 122, but is not limited thereto, and the lower cover 12 plate is rectangular in this embodiment for convenience of production and assembly. The lower cover side wall 122 comprises four blocks which are sequentially connected end to end. One of the lower cover side walls 122 is formed with a sound emitting portion 123 on a side away from the lower cover 12. The sound outlet 123 is provided with the sound outlet 120 penetrating therethrough. That is, the sound emitting portion 123 is formed at a position corresponding to the sound outlet 120, so that the sound emitting portion 123 is accommodated in the avoidance gap 110. The sounding unit 2 is fixed to the sounding part 123 on a side close to the sounding port 120. The holder body 111 is fixed to the sound emitting portion 123 on a side close to the sound emitting port 120. This structure separates the housing 1 in which the sound outlet 120 is located from the lower cover side wall 122, and the separated component is the sound outlet 123. Thereby making the production and manufacture of the lower cover 12 simple, the production and manufacture of the sound emitting portion 123 easy, and the assembly easy, improving the production efficiency of the manufacture of the speaker box 100.

Preferably, one side of the bracket body 111 close to the sound outlet 120 is embedded into the sound outlet 123 to form a fixed structure. This structure is advantageous in improving the robustness of the housing 1, thereby improving the reliability of the speaker box 100.

One end of the upper cover 13 is fixed to the lower cover 12, and the other end thereof is fixed to the bracket 11. Specifically, one end of the upper cover 13 is fixed to the lower cover sidewall 122, and the other end thereof is fixed to the bracket extension 112. I.e. the upper cover 13 forms a fixed seal with the holder 11.

The sound generating unit 2, the lower cover 12, the upper cover 13 and the support 11 together enclose a rear sound cavity 102. The rear acoustic chamber 102 improves the low frequency acoustic performance of the loudspeaker enclosure 100.

In this embodiment, the folded portion 2212 has an arc-shaped structure formed by being recessed in a direction away from the holder body 111. This structure makes the front acoustic cavity 101 not need to carry out avoidance and profiling design on the folded ring portion 2212, and the folded ring portion 2212 does not occupy the cavity volume of the front acoustic cavity 101, so that the cavity volume of the front acoustic cavity 101 is large, and the high-frequency acoustic performance of the speaker box 100 is effectively improved.

The curved structure of the folded ring portion 2212 formed by the recess not only increases the cavity volume of the front acoustic cavity 101, but also increases the cavity volume of the rear acoustic cavity 102. In this embodiment, the support extension 112 completely falls into the corrugated portion 2212 in the orthogonal projection of the diaphragm 21 to the sounding unit 2. In a conventional case, the first fixing portion 113 only supports the frame 21, and the support extension portion 112 faces the frame 21, in this embodiment, the support extension portion 112 is retracted inward to face the folded ring portion 2212, that is, the rear acoustic cavity 102 has more volume. This structure allows the cavity space formed by the upper cover 13 and the first fixing portion 113 (i.e., a part of the cavity of the rear acoustic cavity 102) to extend to a position right in front of the corrugated portion 2212. That is to say, this structure utilizes the reverse-folded ring characteristic, the support extension part 112 retracts towards the central position of the sound generating unit 2, and on the premise of not influencing the vibration space of the sound generating unit 2, the available space of the rear sound cavity 102 is released outwards to the greatest extent possible, so that the volume of the rear sound cavity 102 is increased, and the low-frequency acoustic performance of the loudspeaker box 100 is improved.

In the present embodiment, the upper cover 13 includes an upper cover main body 131 and a recessed portion 132 recessed from the upper cover main body 131 in a direction away from the holder fixing portion 113. This structure further increases the volume of the rear acoustic chamber 102 while maintaining the height of the speaker box 100 unchanged by forming the recess portion 132 by recessing, so that the low frequency acoustic performance of the speaker box 100 is good.

In this embodiment, a side of the upper cover 13 away from the lower cover 12 is flush with a side of the holder body 111 away from the lower cover 12. This arrangement makes the speaker box 100 easy to assemble and aesthetically pleasing.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. A loudspeaker box comprises a shell with an accommodating space and a sounding unit accommodated in the accommodating space, wherein the sounding unit comprises a basin frame, a vibration system fixed on the basin frame and a magnetic circuit system for driving the vibration system to vibrate and sound; the vibration system comprises a vibrating diaphragm for vibrating and sounding, the magnetic circuit system comprises a lower clamping plate fixed on the basin frame, and the vibration system is characterized in that,

the shell comprises a support for supporting the sounding single body, a lower cover, an upper cover and a sound outlet, wherein the lower cover and the upper cover are respectively arranged on two opposite sides of the sounding single body along the vibration direction of the vibrating diaphragm, and the support, the lower cover and the upper cover jointly enclose the accommodating space;

the support comprises a support body arranged opposite to the sounding monomer at intervals, a support extension part bent and extended from the periphery of the support body to the sounding monomer, and a first fixing part bent and extended from the support extension part to the direction far away from the support body, one side of the sounding monomer provided with the vibrating diaphragm is supported and fixed on the first fixing part and is spaced from the support body, the sounding monomer and the support together form a front sound cavity, and the front sound cavity is communicated with the outside through a sound outlet; the bracket also comprises a second fixing part which extends from one side of the first fixing part far away from the extension part of the bracket along the circumferential side of the sounding single body to the direction far away from the bracket body, and the second fixing part and the lower clamping plate form fixed connection at the circumferential side position of the sounding single body;

one end of the upper cover is fixed on the lower cover, and the other end of the upper cover is fixed on the bracket; the sound production unit, the lower cover, the upper cover and the bracket enclose a rear sound cavity together.

2. The speaker box according to claim 1, wherein the lower cover includes a lower cover plate disposed on one side of the sound generating unit away from the diaphragm and a lower cover sidewall extending from a periphery of the lower cover plate, the sound outlet is disposed on the lower cover sidewall, one side of the sound generating unit close to the sound outlet abuts against the lower cover sidewall, the lower cover sidewall is spaced from the second fixing portion, and an avoiding notch for avoiding the sound outlet is disposed on one side of the support close to the sound outlet.

3. A loudspeaker enclosure according to claim 1, wherein the support is of a metal material.

4. A loudspeaker enclosure according to claim 3, wherein the second fixing portion is fixed to the lower plate by welding.

5. A loudspeaker enclosure according to claim 1, wherein the second fastening portions comprise two, the two second fastening portions being spaced apart from each other and located on the same side of the sound generating unit.

6. The speaker box according to claim 5, wherein the sound generating unit has a rectangular structure, and the two second fixing portions are located on one side of a long axis of the sound generating unit.

7. The loudspeaker box of claim 6, wherein the bracket further comprises two bracket limiting parts extending from the periphery of the first fixing part along the circumferential direction of the frame away from the diaphragm, and the two bracket limiting parts are located on two opposite sides of the short axis of the sound generating unit and abut against the sound generating unit.

8. The loudspeaker box of claim 2, wherein the diaphragm includes a vibration portion, a folded ring portion extending from the periphery of the vibration portion in a bent manner, and a diaphragm fixing portion extending from the folded ring portion in a bent manner in a direction away from the vibration portion, the diaphragm fixing portion is fixed to the first fixing portion in a glued manner, the folded ring portion is in an arc-shaped structure formed by being recessed in a direction away from the bracket body, and the bracket extension portion completely falls into the folded ring portion along the vibration direction of the diaphragm in the orthographic projection of the sounding monomer.

9. A loudspeaker enclosure according to claim 2, wherein the upper cover is secured at one end to the lower cover side wall and at the other end to the bracket extension.

10. The loudspeaker box according to claim 2, wherein the lower cover plate is rectangular, the side walls of the lower cover plate comprise four pieces which are sequentially connected end to end, one side of the side wall of the lower cover plate, which is far away from the lower cover plate, forms a sound outlet part, the sound outlet part is accommodated in the avoiding gap, and the sound outlet part is provided with the sound outlet penetrating through the sound outlet part; one side of the sounding monomer, which is close to the sounding port, is fixed on the sounding part; one side of the support body close to the sound outlet is fixed on the sound outlet.