CN216565225U

CN216565225U - Microphone assembly and terminal device

Info

Publication number: CN216565225U
Application number: CN202220222775.3U
Authority: CN
Inventors: 刘國光; 任斌; 刘小东
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-05-17
Anticipated expiration: 2032-01-26

Abstract

The present disclosure relates to a microphone assembly and a terminal device, the microphone assembly including a microphone body, an electrical connector, and a middle frame structure; one end of the electric connecting piece is electrically connected with the microphone body, and the other end of the electric connecting piece is electrically connected with the main board; at least one side surface of the middle frame structure is sunken with a mounting groove, a sound receiving channel is formed in the middle frame structure, a first channel port of the sound receiving channel is communicated with the inside of the mounting groove, and a second channel port of the sound receiving channel is formed on one side surface of the middle frame structure; the microphone body is arranged in the mounting groove and is arranged opposite to the first channel opening, so that the space occupied by the microphone assembly in the middle frame structure can be effectively reduced, and the space utilization rate is improved.

Description

Microphone assembly and terminal device

Technical Field

The present disclosure relates to the field of electronic product technologies, and in particular, to a microphone assembly and a terminal device.

Background

With the explosive growth of mobile terminal products, people pursue the audio and video effect of the products more extremely. For example, most mobile phone manufacturers are currently pushing mobile phone products with stereo sound reception effect to the utmost, so that various mic (microphone, known as microphone) designs are presented.

In the related art, the mic design of the mobile phone generally adopts four installation methods: the first, side-mounted mode; secondly, a back-mounted mode; third, the mode of formal installation; fourthly, a top mounting mode; however, no matter which installation mode is adopted, the installation device occupies a large structural space of the middle frame, and the space utilization rate is low.

SUMMERY OF THE UTILITY MODEL

To overcome the problems in the related art, the present disclosure provides a microphone assembly and a terminal device.

According to a first aspect of embodiments of the present disclosure, there is provided a microphone assembly comprising a microphone body, an electrical connection, and a mid-frame structure; one end of the electric connecting piece is electrically connected with the microphone body, and the other end of the electric connecting piece is electrically connected with the main board; at least one side surface of the middle frame structure is sunken with an installation groove, a sound receiving channel is formed in the middle frame structure, a first channel port of the sound receiving channel is communicated with the inside of the installation groove, and a second channel port of the sound receiving channel is formed on one side surface of the middle frame structure; the microphone body is arranged in the mounting groove and is opposite to the first channel opening.

In some embodiments, the front side and/or the rear side of the middle frame structure is recessed with the mounting groove at the edge in the left-right direction, the sound receiving channel extends in the left-right direction and the second channel opening is formed on the left side or the right side of the middle frame structure close to the mounting groove.

In some embodiments, the microphone assembly further includes a mounting substrate and a sound-receiving piece, the mounting substrate is disposed in the mounting groove in a manner of extending along a recessed direction of the mounting groove, the sound-receiving piece is disposed on a side of the mounting substrate close to the sound-receiving channel and is configured to be opposite to the first channel opening, and the microphone body is disposed on a side of the mounting substrate away from the sound-receiving channel and is configured to be opposite to the sound-receiving piece.

In some embodiments, the microphone assembly further includes a pressing member, the pressing member is disposed in the mounting groove and located on a side of the mounting substrate away from the sound receiving channel, and the pressing member is used for abutting against the mounting substrate, so that the sound receiving member abuts against an inner side wall of the mounting groove close to the sound receiving channel.

In some embodiments, the electrical connector comprises a flexible circuit board and a first pad, a first end of the flexible circuit board is electrically connected with the first pad, and a second end of the flexible circuit board is electrically connected with the main board; the first pad is connected to one side, far away from the sound receiving channel, of the mounting substrate, the microphone body is arranged on one side, far away from the sound receiving channel, of the first pad and is electrically connected with the first pad, and the pressing piece is located on one side, far away from the sound receiving channel, of the first pad and is used for being abutted to the first pad.

In some embodiments, the microphone assembly further includes a first adhesive layer and a second adhesive layer, the first end portion is connected to a side of the first pad close to the sound receiving channel, the first end portion is connected to a side of the mounting substrate far away from the sound receiving channel through the first adhesive layer, and the sound receiving part is connected to a side of the mounting substrate close to the sound receiving channel through the second adhesive layer.

In some embodiments, the compression member includes a first compression portion, a second compression portion, and a connecting portion connecting the first compression portion and the second compression portion to enclose a receiving groove; the first pressing part and/or the second pressing part are/is used for abutting against the mounting substrate, and when the first pressing part and/or the second pressing part abuts against the mounting substrate, the microphone body is located in the accommodating groove.

In some embodiments, the first pressing portion and/or the second pressing portion are/is provided with a limiting convex block, and a limiting clamping groove clamped with the limiting convex block is formed in the inner side wall of the mounting groove.

In some embodiments, the inner side wall of the limiting clamping groove comprises a first inclined surface which is inclined from inside to outside and gradually departs from the inner bottom wall of the mounting groove; and a second inclined plane which can form sliding fit with the first inclined plane is formed on the limiting convex block.

In some embodiments, the sound receiving channel is disposed to incline forwards or backwards from the first channel opening to the second channel opening, so that the second channel opening is disposed centrally on the left side or the right side of the middle frame structure in the front-back direction.

The present disclosure also provides a terminal device, which includes the microphone assembly.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the mounting groove is formed in at least one side face of the middle frame structure, the microphone body is arranged in the mounting groove, the microphone body and the first channel opening are arranged oppositely, the microphone body is arranged in the mounting groove in a side-placing mode, the mounting groove can be arranged as small as possible, the space occupied by the microphone assembly in the middle frame structure can be effectively reduced, and the utilization rate of the space is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is an exploded schematic view of a portion of the structure of a microphone assembly shown in accordance with an exemplary embodiment;

FIG. 2 is a schematic cross-sectional view at a mounting slot of a microphone assembly shown in accordance with an exemplary embodiment;

fig. 3 is a schematic view of a partial structure of a microphone assembly according to an exemplary embodiment, and the first pads of the electrical connections are not shown in the figure;

fig. 4 to 6 are schematic structural views illustrating a pressing member of a microphone assembly according to an exemplary embodiment.

Description of the reference numerals

1 microphone body 2 Electrical connector

21 first end of flexible circuit board 211

212 second end 22 first pad

23 second bonding pad

3 mounting groove of middle frame structure 30

301 limiting clamping groove 3011 first inclined plane

31 front side 32 sound receiving channel

321 first port 322 and second port

33 left side 34 channel

4 mounting substrate

5 radio 51 opening

6 compressing part

61 first pressing part 62 second pressing part

60 accommodating groove 63 connecting part

64 second inclined surface of limit bump 641

7 first adhesive layer 8 second adhesive layer

9 third glue layer 10 dust screen

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

In the present disclosure, directional words such as "up, down, left, right, front, and rear" used in the case where no description is made to the contrary refer to "up, down, left, right, front, and rear" defined in a normal use state of the mobile terminal; in particular, reference may be made to fig. 1; use of directional words such as "inner and outer" refers to the inner and outer of a particular structural profile; terms such as "first" and "second" are used merely to distinguish one element from another and are not sequential or significant.

As shown in fig. 1 to 6, the present disclosure provides a microphone assembly including a microphone body 1, an electrical connector 2, and a middle frame structure 3. One end of the electrical connector 2 is electrically connected to the microphone body 1, and the other end is electrically connected to a main board (not shown). At least one side surface of the middle frame structure 3 is recessed with an installation groove 30, a sound receiving channel 32 is formed in the middle frame structure 3, a first channel port 321 of the sound receiving channel 32 is communicated with the inside of the installation groove 30, and a second channel port 322 of the sound receiving channel 32 is formed on one side surface of the middle frame structure 3; the microphone body 1 is disposed in the mounting groove 30 and opposite to the first passage port 321.

The microphone body 1 collects voice information from a user through the sound reception channel 32, converts the voice information into an electric signal, and transmits the electric signal to the main board through the electric connector 2.

In the above technical solution, by providing the mounting groove 30 on at least one side surface of the middle frame structure 3, and by providing the microphone body 1 in the mounting groove 30, and by providing the microphone body 1 and the first passage port 321 oppositely, the microphone body 1 is disposed in the mounting groove 30 in a side-placing manner, and the mounting groove 30 can be set as small as possible, so that the space occupied by the microphone assembly in the middle frame structure 3 can be effectively reduced, and the utilization rate of the space can be improved.

In one embodiment, referring to fig. 1, the front side 31 and/or the rear side of the middle frame structure 3 is recessed with an installation groove 30 at the edge in the left-right direction, the sound reception channel 32 extends in the left-right direction and the second channel opening 322 is formed on the left side 33 or the right side of the middle frame structure 3 near the installation groove 30.

By arranging the mounting groove 30 at the edge of the front side surface 31 and/or the rear side surface in the left-right direction, the sound receiving channel 32 extending in the left-right direction is shortened as much as possible, the front cavity space for receiving sound by the microphone body 1 is reduced, the loss of sound frequency is avoided, and the sound receiving effect is improved; in addition, the sound receiving channel 32 is shortened, so that the manufacturing and processing are facilitated, and the processing difficulty is reduced.

Optionally, referring to fig. 1 to 3, the microphone assembly further includes a mounting substrate 4 and a sound receiving piece 5, the mounting substrate 4 is disposed in the mounting groove 30 in a manner of extending along a recessed direction of the mounting groove 30, the sound receiving piece 5 is disposed on a side of the mounting substrate 4 close to the sound receiving channel 32 and is configured to be opposite to the first channel opening 321, and the microphone body 1 is disposed on a side of the mounting substrate 4 away from the sound receiving channel 32 and is configured to be opposite to the sound receiving piece 5.

Firstly, the installation substrate 4 is arranged, so that the installation arrangement of the microphone body 1 is facilitated, and the installation stability of the microphone body 1 is improved; next, the sound receiving piece 5 is disposed on the side of the mounting substrate 4 close to the sound receiving channel 32 and is disposed opposite to the first channel port 321, so that the sound receiving effect can be effectively improved by the sound receiving piece 5, and the sound can be transmitted to the microphone body 1 through conduction of the mounting substrate 4, so as to collect sound information by the microphone body 1.

In addition to the above embodiments, the sound receiving element 5 is provided with a buffer member, the buffer member is provided with an opening 51 opposite to the first channel port 321, the buffer member may be a component having a buffering function, such as foam or silica gel, and the specific structure and specific material of the sound receiving element 5 or the buffer member are not limited in this disclosure.

Referring to fig. 1 and 2, the microphone assembly further includes a pressing member 6, the pressing member 6 is disposed in the mounting groove 30 and located on one side of the mounting substrate 4 away from the sound receiving channel 32, and the pressing member 6 is used for abutting against the mounting substrate 4, so that the sound receiving member 5 and the mounting groove 30 abut against the inner side wall of the sound receiving channel 32, and therefore the sealing performance between the sound receiving member 5 and the inner side wall of the mounting groove 30 is improved, the sound receiving effect of the sound receiving member 5 is further improved, and in addition, the installation air tightness can also be improved to a certain extent.

In a possible embodiment, as shown with reference to fig. 1 and 2, the electrical connector 2 comprises a flexible circuit board 21 and a first pad 22, a first end 211 of the flexible circuit board 21 being electrically connected to the first pad 22, a second end 212 being electrically connected to the motherboard; the first pad 22 is connected to the side of the mounting substrate 4 away from the sound receiving channel 32, the microphone body 1 is disposed on the side of the first pad 22 away from the sound receiving channel 32 and electrically connected to the first pad 22, and the pressing member 6 is disposed on the side of the first pad 22 away from the sound receiving channel 32 and is used for abutting against the first pad 22.

The first pad 22 is pressed by the pressing piece 6, so that the sound receiving piece 5 is abutted against the side wall of the mounting groove 30 close to the sound receiving channel 32; in addition to improving the sealing property between the above-mentioned sound receiver 5 and the mounting groove 30, the tightness of the connection between the first land 22 and the mounting substrate 4 can be improved, and the first land 22 is prevented from being detached from the mounting substrate 4.

Referring to fig. 3, the electrical connector 2 may further include a second pad 23, the second end portion 212 of the flexible circuit board 21 may be electrically connected to the second pad 23, and the second pad 23 may be electrically connected to the main board.

In addition, for the installation of the flexible circuit board 21, a channel 34 adapted to the shape of the flexible circuit board 21 may be provided on the front side 31 and/or the rear side of the middle frame structure 3 to facilitate the installation and fixation of the flexible circuit board 21.

Referring to fig. 2, the microphone assembly further includes a first adhesive layer 7 and a second adhesive layer 8, the first end portion 211 is connected to a side of the first pad 22 close to the sound receiving channel 32, the first end portion 211 is connected to a side of the mounting substrate 4 far from the sound receiving channel 32 through the first adhesive layer 7, and the sound receiving part 5 is connected to a side of the mounting substrate 4 close to the sound receiving channel 32 through the second adhesive layer 8.

In this embodiment, the first end 211 of the flexible circuit board 21 is connected to the side of the mounting substrate 4 away from the sound-absorbing channel 32 through the first adhesive layer 7, and the sound-absorbing piece 5 is connected to the side of the mounting substrate 4 close to the sound-absorbing channel 32 through the second adhesive layer 8. The first adhesive layer 7 and the second adhesive layer 8 are used for realizing the connection among the sound receiving piece 5, the mounting substrate 4 and the flexible circuit board 21, the connection is firm, and the increase of the thickness can be avoided. In addition, the arrangement of the pressing member 6 can also improve the adhesion between the first adhesive layer 7 and the second adhesive layer 8.

In other embodiments, the microphone assembly may further include a third adhesive layer 9 and a dust screen 10, the dust screen 10 being disposed between the sound receiver 5 and the mounting substrate 4. The sound receiving piece 5 is adhered to one side of the dust screen 10 close to the sound receiving channel 32 through a second adhesive layer 8; the side of the dust screen 10 far away from the sound receiving channel 32 is bonded to the side of the mounting substrate 4 near the sound receiving channel through a third glue layer 9. By arranging the dust screen 10, a good dust-proof effect can be achieved, and the influence of dust accumulation on sound reception is avoided.

Referring to fig. 4 to 6, the pressing member 6 includes a first pressing portion 61, a second pressing portion 62, and a connecting portion 63, and the connecting portion 63 connects the first pressing portion 61 and the second pressing portion 62 to enclose the receiving groove 60; the first pressing portion 61 and/or the second pressing portion 62 are used for abutting against the mounting substrate 4, and when the first pressing portion 61 and/or the second pressing portion 62 abut against the mounting substrate 4, the microphone body 1 is located in the accommodating groove 60, so that the pressing piece 6 is effectively prevented from pressing the microphone body 1, and the microphone body 1 is guaranteed to work normally. However, the present disclosure does not limit the specific structure of the pressing member 6.

Referring to fig. 2, 5 and 6, the first pressing portion 61 and/or the second pressing portion 62 are provided with a limit protrusion 64, and a limit slot 301 which is engaged with the limit protrusion 64 is formed on an inner side wall of the mounting groove 30. For example, a limit bump 64 is arranged on one side of the first pressing part 61 and/or the second pressing part 62 away from the sound receiving channel 32, and a limit slot 301 which is mutually clamped with the limit bump 64 is formed on the inner side wall of the mounting groove 30 away from the sound receiving channel 32.

When compressing tightly piece 6 and being located mounting groove 30, this spacing lug 64 and spacing draw-in groove 301 joint each other to can avoid compressing tightly piece 6 effectively and break away from in mounting groove 30, improve the stability of installation.

Referring to fig. 2, the inner sidewall of the limiting slot 301 includes a first inclined surface 3011, the first inclined surface 3011 is inclined from the inside to the outside and gradually gets away from the inner bottom wall of the mounting groove 30, and a second inclined surface 641 capable of forming a sliding fit with the first inclined surface 3011 is formed on the limiting protrusion 64.

In the process of inserting the pressing member 6 into the mounting groove 30, when the first inclined surface 3011 and the second inclined surface 641 are slidably attached to each other, the insertion of the limiting projection 64 into the limiting slot 301 can be effectively guided, and the convenience of installation is improved.

In one embodiment, both the first and second inclined surfaces 3011 and 641 may be inclined 15 degrees with respect to a horizontal plane, but the inclination angles of the first and second inclined surfaces 3011 and 641 are not limited by this disclosure.

Alternatively, as shown in fig. 2, the sound receiving channel 32 extends from the first channel opening 321 to the second channel opening 322 in a forward or backward inclined manner, so that the second channel opening 322 is centrally disposed on the left side 33 or the right side of the middle frame structure in the forward or backward direction, thereby preventing the second channel opening 322 from damaging the structural strength of the middle frame structure 3 and improving the aesthetic property.

The present disclosure additionally provides a terminal device including the microphone assembly described above. For example, the terminal device may be a mobile phone, a tablet computer, or the like, which is not limited in this disclosure.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. Microphone assembly, characterized in that it comprises a microphone body (1), an electrical connector (2) and a middle frame structure (3); one end of the electric connecting piece (2) is electrically connected with the microphone body (1), and the other end of the electric connecting piece is electrically connected with the mainboard; at least one side surface of the middle frame structure (3) is sunken with an installation groove (30), a sound receiving channel (32) is formed in the middle frame structure (3), a first channel opening (321) of the sound receiving channel (32) is communicated with the inside of the installation groove (30), and a second channel opening (322) of the sound receiving channel (32) is formed in one side surface of the middle frame structure (3); the microphone body (1) is arranged in the mounting groove (30) and is opposite to the first channel opening (321).

2. The microphone assembly as defined in claim 1, wherein the front side (31) and/or the rear side of the center frame structure (3) is recessed with the mounting groove (30) at the edge in the left-right direction, the sound reception channel (32) extends in the left-right direction and the second passage opening (322) is formed on the left side (33) or the right side of the center frame structure (3) near the mounting groove (30).

3. The microphone assembly as claimed in claim 1 or 2, further comprising a mounting substrate (4) and a sound-receiving member (5), wherein the mounting substrate (4) is disposed in the mounting groove (30) in a manner extending along a recessed direction of the mounting groove (30), the sound-receiving member (5) is disposed on a side of the mounting substrate (4) close to the sound-receiving passage (32) and is configured to be opposite to the first passage opening (321), and the microphone body (1) is disposed on a side of the mounting substrate (4) away from the sound-receiving passage (32) and is configured to be opposite to the sound-receiving member (5).

4. The microphone assembly as recited in claim 3, further comprising a pressing member (6), wherein the pressing member (6) is disposed in the mounting groove (30) and located on a side of the mounting substrate (4) away from the sound receiving channel (32), and the pressing member (6) is used for abutting against the mounting substrate (4) so that the sound receiving member (5) abuts against an inner side wall of the mounting groove (30) close to the sound receiving channel (32).

5. Microphone assembly according to claim 4, characterized in that the electrical connection (2) comprises a flexible circuit board (21) and a first pad (22), the first end (211) of the flexible circuit board (21) being electrically connected with the first pad (22) and the second end (212) being electrically connected with the main board; the first bonding pad (22) is connected to one side, far away from the sound receiving channel (32), of the mounting substrate (4), the microphone body (1) is arranged on one side, far away from the sound receiving channel (32), of the first bonding pad (22) and is electrically connected with the first bonding pad, and the pressing piece (6) is located on one side, far away from the sound receiving channel (32), of the first bonding pad (22) and is used for abutting against the first bonding pad (22).

6. The microphone assembly as defined by claim 5, further comprising a first glue layer (7) and a second glue layer (8), wherein the first end portion (211) is connected to the first pad (22) at a side close to the sound receiving channel (32), the first end portion (211) is connected to the mounting substrate (4) at a side away from the sound receiving channel (32) through the first glue layer (7), and the sound absorbing member (5) is connected to the mounting substrate (4) at a side close to the sound receiving channel (32) through the second glue layer (8).

7. The microphone assembly as defined in claim 4, wherein the pressing member (6) includes a first pressing portion (61), a second pressing portion (62), and a connecting portion (63), the connecting portion (63) connecting the first pressing portion (61) and the second pressing portion (62) to enclose the receiving groove (60); the first pressing part (61) and/or the second pressing part (62) are used for abutting against the installation substrate (4), and when the first pressing part (61) and/or the second pressing part (62) abuts against the installation substrate (4), the microphone body (1) is located in the containing groove (60).

8. The microphone assembly as claimed in claim 7, wherein the first pressing portion (61) and/or the second pressing portion (62) are/is provided with a limit protrusion (64), and a limit slot (301) mutually clamped with the limit protrusion (64) is formed on the inner side wall of the mounting groove (30).

9. The microphone assembly as claimed in claim 8, wherein the inner sidewall of the position-limiting catching groove (301) includes a first slope (3011), the first slope (3011) being inclined from the inside to the outside and gradually departing from the inner bottom wall of the mounting groove (30); and a second inclined surface (641) which can form sliding fit with the first inclined surface (3011) is formed on the limiting convex block (64).

10. The microphone assembly as defined in claim 2, wherein the sound reception channel (32) extends rearward or forward from the first channel opening (321) to the second channel opening (322) such that the second channel opening (322) is centrally disposed on the left side (33) or the right side of the center frame structure (3) in the front-rear direction.

11. A terminal device, characterized in that the terminal device comprises a microphone assembly as claimed in any one of claims 1-10.