CN218450438U

CN218450438U - Antenna mounting structure and microphone

Info

Publication number: CN218450438U
Application number: CN202222966410.4U
Authority: CN
Inventors: 申兆垒; 孙洪超
Original assignee: Gettop Acoustic Co Ltd
Current assignee: Gettop Acoustic Co Ltd
Priority date: 2022-11-08
Filing date: 2022-11-08
Publication date: 2023-02-03
Anticipated expiration: 2032-11-08

Abstract

The application provides an antenna mounting structure and a microphone with the same. The antenna mounting structure comprises a shell, a circuit board and a radio frequency antenna, wherein the radio frequency antenna is embedded in the side wall of the shell and is in a cylindrical shape surrounding the circumference of the shell; the circuit board is fixedly arranged in the shell, the radio frequency antenna is provided with a connecting part exposed out of the inner wall surface of the shell, and the connecting part is electrically connected with the circuit board. According to the antenna mounting structure and the microphone, the radio frequency antenna is embedded in the side wall of the shell, so that the arrangement space of a structural member and the radio frequency antenna in the prior art is saved, and the structure of the radio frequency antenna can be designed to be larger so as to improve the antenna efficiency; through the closed tube-shape of following casing circumference and encircleing with radio frequency antenna design, compare and be slice or threadiness antenna among the prior art, enlarged radio frequency antenna's radiating area, increased radio frequency signal propagation direction, and then improved signal transmission stability.

Description

Antenna mounting structure and microphone

Technical Field

The application relates to the technical field of audio equipment, in particular to an antenna mounting structure and a microphone.

Background

A wireless microphone is a very common handheld audio wireless transmission device, and the wireless microphone generally realizes the transmission of radio waves through an antenna. Since the wireless microphone is designed to be miniaturized as a whole for the convenience of holding or carrying by a user, the space for disposing the antenna inside the body is also considerably limited.

In the prior art, an antenna is generally fixed on a microphone shell or an internal circuit board through a structural part, the structural part occupies a large space, the miniaturization development of a microphone is not facilitated, and the antenna is easy to loosen in the using process, so that the transmission of radio frequency signals is influenced; meanwhile, the antenna is limited by the inner space of the microphone, is generally designed to be sheet-shaped or linear, and has poor signal transmission stability, so that the use experience of the product is indirectly influenced.

Disclosure of Invention

In order to solve the existing technical problem, the application provides an antenna mounting structure and a microphone which occupy small space and are stable in signal transmission.

In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

on one hand, the embodiment of the application provides an antenna mounting structure, which comprises a shell, a circuit board and a radio frequency antenna; the radio frequency antenna is embedded in the side wall of the shell and is in a cylindrical shape surrounding the circumference of the shell; the circuit board is fixedly arranged in the shell, the radio frequency antenna is provided with a connecting part exposed out of the inner wall surface of the shell, and the connecting part is electrically connected with the circuit board.

In one embodiment, the housing is formed by injection molding and the rf antenna is integrally sealed in the sidewall.

In one embodiment, the connecting portion is of a groove-shaped structure and comprises a first connecting piece, and a second connecting piece and a third connecting piece which are vertically arranged on two sides of the first connecting piece, the second connecting piece and the third connecting piece are embedded in the side wall of the shell, and the first connecting piece is attached to the inner wall surface of the shell.

In one embodiment, both ends of the radio frequency antenna are provided with a convex part arranged convexly along the axial direction and/or a hollow part arranged concavely along the axial direction so as to enhance the glue gripping force of the injection molding connection of the radio frequency antenna and the shell.

In one embodiment, at least one end of the rf antenna is provided with a bent portion extending radially inward, and the bent portion is used for positioning the rf antenna during an injection molding process.

In one embodiment, an elastic electric connector is arranged on the circuit board and abuts against the space between the circuit board and the connecting part.

In one embodiment, the elastic electrical connector is a spring or a thimble.

In one embodiment, the circuit board is provided with a radio frequency chip, and the radio frequency antenna and the radio frequency chip are arranged in a radial direction correspondingly.

On the other hand, the embodiment of the present application further provides a microphone, including any one of the foregoing antenna mounting structures, the casing is the handle of the microphone, and the radio frequency antenna is arranged at the lower end of the casing.

In one embodiment, the microphone further includes a middle frame support, a metal mesh, a transducer and a battery, the middle frame support is fixed in the casing, the circuit board and the battery are both mounted on the middle frame support, the transducer is mounted at one end of the middle frame support, the metal mesh is connected to the upper end of the casing and covers the periphery of the transducer, and the battery and the transducer are both electrically connected to the circuit board.

The antenna mounting structure and the microphone with the antenna mounting structure at least have the following beneficial effects: the radio frequency antenna is embedded in the side wall of the shell, so that the arrangement space of a structural part and the radio frequency antenna in the prior art is saved, the miniaturization development of the whole structure is facilitated, the structure of the radio frequency antenna can be designed to be larger so as to improve the antenna efficiency, and meanwhile, the embedded connection structure enables the radio frequency antenna to be stably connected and not easy to loosen; through designing radio frequency antenna for the tube-shape that encircles along casing circumference, can transmit radio frequency signal 360 to the circumference space, compared in the antenna that is the slice or threadiness among the prior art, enlarged radio frequency antenna's radiating area, increased radio frequency signal propagation direction, and then improved signal transmission stability.

Drawings

Fig. 1 is a schematic connection diagram of an antenna mounting structure according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a perspective view of the RF antenna of FIG. 1 in one direction;

FIG. 3 is a schematic perspective view of the RF antenna of FIG. 1 in another direction;

fig. 4 is a schematic perspective view of a microphone according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a split structure of the microphone in FIG. 4;

FIG. 6 is a cross-sectional view of the microphone of FIG. 4;

fig. 7 is an enlarged view of a point a in fig. 6.

The elements in the figures are numbered as follows: a housing 10; a wiring board 20; an elastic electrical connection 21; a radio frequency chip 22; a radio frequency antenna 30; a connecting portion 31; a first connecting piece 311; a second connecting piece 312; a third connecting piece 313; a boss 32; a hollow-out portion 33; a bent portion 34; a middle frame support 40; a metal mesh enclosure 50; a transducer 60; a battery 70; foam 80; the button 90 is turned on and off.

Detailed Description

The technical solution of the present application is further described in detail with reference to the drawings and specific embodiments of the specification.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of implementations of the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The embodiment of the application provides an antenna mounting structure, can be applied to audio equipment such as wireless microphone, intercom, realizes audio signal's wireless transmission. Referring to fig. 1, the antenna mounting structure includes a housing 10, a circuit board 20, and a radio frequency antenna 30. The radio frequency antenna 30 is embedded in the side wall of the housing 10 and is in a cylindrical shape surrounding the circumference of the housing 10; the circuit board 20 is fixed in the housing 10, the rf antenna 30 is provided with a connecting portion 31 exposed on the inner wall surface of the housing 10, and the connecting portion 31 is electrically connected to the circuit board 20. Therefore, the radio frequency antenna 30 is embedded in the side wall of the shell 10, so that the arrangement space of structural parts and the radio frequency antenna 30 in the prior art is saved, the miniaturization and development of the whole structure are facilitated, the structure of the radio frequency antenna 30 can be designed to be larger so as to improve the antenna efficiency, and meanwhile, the embedded connection structure enables the radio frequency antenna 30 to be connected stably and not to be loosened easily; the circuit board 20 transmits the radio frequency signal to the antenna through the connecting portion 31, and the radio frequency antenna 30 which is cylindrical along the circumferential direction of the housing 10 can transmit the radio frequency signal to the circumferential space by 360 degrees, so that compared with a sheet or linear antenna in the prior art, the radiation area of the radio frequency antenna 30 is enlarged, the radio frequency signal propagation direction is increased, and the signal transmission stability is further improved.

In order to make the signal strength of the rf signal in all directions consistent with the propagation distance, the housing 10 is preferably a cylindrical structure, and the rf antenna 30 is preferably a cylindrical structure consistent with the housing 10 and having a slightly smaller size. However, the shapes of the housing 10 and the rf antenna 30 are not limited in the present application, in other embodiments, the housing 10 may also be a square tube, an irregular shape, or other structures, the cross-sectional shape of the rf antenna 30 may be the same as or different from the cross-sectional shape of the housing 10, and only the end-to-end closed loop of the rf antenna 30 is required to increase the direction of the rf signal.

Referring to fig. 2-3 and 6-7, the housing 10 can be integrally connected to the rf antenna 30 by injection molding. The housing 10 may be made of plastic, resin, etc., and the rf antenna 30 may be made of metal material such as gold, silver, copper, etc., which has low resistivity and is easy to conduct. In the injection molding process of the housing 10, the radio frequency antenna 30 made of metal is fixed in a molding mold of the housing 10, then a molten material is poured into a mold cavity, and after cooling, the connection between the radio frequency antenna 30 and the housing 10 is achieved.

The connecting portion 31 is preferably a slot-type structure, and includes a first connecting piece 311, a second connecting piece 312 and a third connecting piece 313 vertically disposed on two sides of the first connecting piece 311, the second connecting piece 312 and the third connecting piece 313 are embedded inside the sidewall of the casing 10, and the first connecting piece 311 is attached to the inner wall surface of the casing 10. The third connecting piece 313 and the second connecting piece 312 are embedded in the side wall of the housing 10 during the injection molding process, so as to stabilize the first connecting piece 311 and prevent the first connecting piece 311 from loosening to further influence the connection between the rf antenna 30 and the circuit board 20.

Preferably, both ends of the rf antenna 30 are provided with a convex portion 32 protruding along the axial direction and/or a hollow portion 33 recessed along the axial direction. In the illustrated embodiment, one end of the rf antenna 30 is provided with a plurality of protrusions 32, the plurality of protrusions 32 are arranged at intervals along the circumferential direction, the other end of the rf antenna is provided with a plurality of hollows 33, and the plurality of hollows 33 are arranged at intervals along the circumferential direction. Of course, in other embodiments, both ends of the rf antenna 30 may be provided with only the protruding portion 32 or both ends may be provided with only the hollow portion 33; the shapes of the convex portion 32 and the hollow portion 33 are not limited, and may be trapezoidal like in the drawing, or may be other structures such as rectangular like and triangular like. Therefore, the protruding portions 32 and the hollow portions 33 which are protruded or recessed can enhance the adhesive holding force at the two ends of the rf antenna 30, and further enhance the stability and the overall structural strength of the connection between the rf antenna 30 and the housing 10.

Further, in order to facilitate the fixing of the rf antenna 30 during the injection molding process, at least one end of the rf antenna 30 is provided with a bent portion 34 extending toward the radial inner side, and the bent portion 34 is used for fixing with the mold of the housing 10 or for clamping and fixing of an external device.

The circuit board 20 is provided with an elastic electric connector 21, and the elastic electric connector 21 is abutted between the circuit board 20 and the connecting part 31 to realize the transmission of radio frequency signals. In the illustrated embodiment, the elastic electrical connector 21 is preferably a pogo pin, and its own elastic structure makes the connection between the elastic electrical connector 21 and the connecting portion 31 stable, so as to avoid the loose connection between the circuit board 20 and the connecting portion caused by the shaking of the housing 10. Of course, in other embodiments, the elastic electrical connector 21 may also be made of a metal spring sheet.

The circuit board 20 is further provided with a radio frequency chip 22 for amplifying the radio frequency output power, and the radio frequency chip 22 and the elastic electric connector 21 are conducted through a signal line on the circuit board 20. Preferably, the rf antenna 30 is disposed corresponding to the rf chip 22 in the radial direction, so that the rf chip 22 is located as close as possible to the rf antenna 30, further reducing the power loss caused by the line loss, and indirectly enhancing the rf signal strength.

Referring to fig. 4 to 7, an embodiment of the present invention further provides a wireless microphone having the antenna mounting structure. The handle of the microphone is the casing 10, and the rf antenna 30 is embedded in the lower end of the casing 10, which helps to prevent interference between the rf antenna 30 and other components in the casing 10 and further influences the transmitting effect of the rf antenna 30. In the illustrated embodiment, the rf antenna 30 is preferably made of copper, and the thickness thereof is preferably 0.1mm to 0.5mm, and the thickness of the housing 10 on both sides of the rf antenna 30 is preferably 0.5mm to 1.0mm; the size and shape of the first connecting piece 311 are preferably 4 x 4mm rectangular, and the first connecting piece protrudes 0.1mm-0.5mm from the inner side surface of the shell 10; the diameter of the spring thimble is preferably 0.8mm, and the spring thimble protrudes 5mm from the surface of the circuit board 20; the elastic electrical connector 21 abuts against the center of the first connecting piece 311.

The microphone also includes a center frame support 40, a metal mesh 50, a transducer 60, and a battery 70. The middle frame bracket 40 is fixedly arranged in the shell 10 to provide a mounting base for components such as the circuit board 20, the transducer 60 and the battery 70; the circuit board 20 and the battery 70 are both arranged on the middle frame support 40, the transducer 60 is arranged at one end of the middle frame support 40, the battery 70 and the transducer 60 are both electrically connected with the circuit board 20, the transducer 60 is used for converting an external sound wave signal into an electric signal, and the battery 70 provides power for the work of each component; the metal mesh enclosure 50 is connected to the upper end of the shell 10 and covers the periphery of the transducer 60, the metal mesh enclosure 50 and the shell 10 can be in threaded connection, a plurality of sound holes are formed in the metal mesh enclosure 50 and used for collecting sound, and foam 80 is arranged between the metal mesh enclosure 50 and the transducer 60 to achieve sound gathering and dust prevention effects; the casing 10 is provided with a switch button 90 to control the microphone to be turned on or off.

In summary, according to the antenna mounting structure and the microphone having the antenna mounting structure of the embodiment of the present application, by embedding the rf antenna 30 in the side wall of the housing 10, the layout space of the structural member and the rf antenna 30 in the prior art is saved, which is beneficial to the miniaturization development of the overall structure, the structure of the rf antenna 30 itself can be designed to be larger to improve the antenna efficiency, and meanwhile, the embedded connection structure makes the connection of the rf antenna 30 stable and not easy to loose; through designing radio frequency antenna 30 for the tube-shape that encircles along casing 10 circumference, can transmit radio frequency signal 360 to the circumference space, compared in the antenna that is the slice or threadiness among the prior art, enlarged radio frequency antenna 30's radiation area, increased radio frequency signal propagation direction, and then improved signal transmission stability.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one of 8230, and" comprising 8230does not exclude the presence of additional like elements in a process, method, article, or apparatus comprising the element.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An antenna mounting structure is characterized by comprising a shell, a circuit board and a radio frequency antenna; the radio frequency antenna is embedded in the side wall of the shell and is cylindrical around the circumference of the shell; the circuit board is fixedly arranged in the shell, the radio frequency antenna is provided with a connecting part exposed out of the inner wall surface of the shell, and the connecting part is electrically connected with the circuit board.

2. The antenna mounting structure of claim 1, wherein the housing is formed by an injection molding process and encloses the rf antenna in a sidewall to form a single body.

3. The antenna mounting structure of claim 2, wherein the connecting portion is a groove-shaped structure and includes a first connecting piece, and a second connecting piece and a third connecting piece vertically disposed on two sides of the first connecting piece, the second connecting piece and the third connecting piece are embedded inside the sidewall of the housing, and the first connecting piece is attached to the inner wall surface of the housing.

4. The antenna mounting structure of claim 2, wherein both ends of the rf antenna are provided with a protruding portion protruding in an axial direction and/or a hollow portion recessed in the axial direction, so as to enhance a rubber gripping force of the rf antenna and the housing in injection molding connection.

5. The antenna mounting structure of claim 2, wherein at least one end of the rf antenna is provided with a bending portion extending radially inward, and the bending portion is used for positioning the rf antenna during an injection molding process.

6. The antenna mounting structure according to claim 1, wherein the circuit board is provided with an elastic electrical connector which abuts between the circuit board and the connecting portion.

7. The antenna mounting structure of claim 6, wherein the resilient electrical connector is a spring or a pin.

8. The antenna mounting structure according to claim 1, wherein a radio frequency chip is provided on the circuit board, and the radio frequency antenna and the radio frequency chip are provided in correspondence with each other in a radial direction.

9. A microphone comprising the antenna mounting structure according to any one of claims 1 to 8, wherein the housing is a grip of the microphone, and the radio frequency antenna is provided at a lower end of the housing.

10. The microphone of claim 9, further comprising a middle frame support, a metal mesh, a transducer, and a battery, wherein the middle frame support is fixed in the casing, the circuit board and the battery are both mounted on the middle frame support, the transducer is mounted at one end of the middle frame support, the metal mesh is connected to the upper end of the casing and covers the periphery of the transducer, and the battery and the transducer are both electrically connected to the circuit board.