CN218472255U

CN218472255U - Cavity filter and communication device

Info

Publication number: CN218472255U
Application number: CN202222116174.7U
Authority: CN
Inventors: 黄剑; 吴家翔; 唐梦军
Original assignee: Anhui Tatfook Technology Co Ltd
Current assignee: Anhui Tatfook Technology Co Ltd
Priority date: 2022-08-10
Filing date: 2022-08-10
Publication date: 2023-02-10
Anticipated expiration: 2032-08-10

Abstract

The application discloses a cavity filter and a communication device, wherein the cavity filter comprises a cavity, a cover plate covering the cavity, and a connector, the connector is provided with a main body and an inner core arranged on the main body, a printed circuit board is arranged in the cavity, a contact component is arranged on the printed circuit board, and the inner core is inserted into the contact component and is communicated with a circuit on the printed circuit board through the contact component; wherein, the contact assembly is provided with a guide part for guiding the inner core to be inserted into the contact assembly. Through the design, the installation and alignment between the connector and the printed circuit board are facilitated, the signal stability between the connector and the printed circuit board can be improved, and the signal transmission stability of the cavity filter is further improved; and the cavity filter is simple to assemble, and the assembly efficiency is improved.

Description

Cavity filter and communication device

Technical Field

The application relates to the field of communication, in particular to a cavity filter and a communication device.

Background

Filters are widely used in the field of communications, particularly radio frequency communications, as a frequency selection device. In the prior art, when a connector in a filter is directly connected with a PCB in an opposite plugging way, because an inner core and an inner conductor are difficult to align and are easy to loosen after aligning and plugging, the assembly efficiency is low and the signal stability is poor.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a cavity filter and a communication device which are high in signal transmission stability and simple to assemble.

The application discloses a cavity filter, which comprises a cavity, a cover plate and a connector, wherein the cover plate covers the cavity, the connector is provided with a main body and an inner core arranged on the main body, a printed circuit board is arranged in the cavity, a contact component is arranged on the printed circuit board, the inner core is inserted into the contact component and is communicated with a circuit on the printed circuit board through the contact component; the contact assembly is provided with a guide part for guiding the inner core to be inserted into the contact assembly.

Optionally, the contact assembly includes a bushing portion and a plugging portion, the bushing portion is sleeved at one end of the plugging portion, and the other end of the plugging portion is fixedly connected to the printed circuit board; the guide part is arranged at one end, facing the main body, of the lining part, and the inner core is inserted into the insertion part through the guide part.

Optionally, a mounting hole is formed in the printed circuit board, and the insertion part is fixedly connected with the printed circuit board through the mounting hole.

Optionally, knurling is arranged on the peripheral wall of one end, far away from the main body, of the insertion part, and the insertion part and the mounting hole are fixed in a compression joint mode through knurling.

Optionally, an external thread is arranged on the outer peripheral wall of one end, far away from the main body, of the plug-in part, an internal thread is arranged on the inner wall of the mounting hole, and the plug-in part is in threaded connection with the mounting hole.

Optionally, the bushing portion and the insertion portion are of a cylindrical structure with a hollow interior, and the bushing portion is communicated with the hollow interior of the insertion portion; the guide part is of a flaring-shaped opening structure, and the opening of the guide part is gradually increased in the direction towards the main body; the plug-in connection part comprises a connecting part body, a first column body, a second column body and a third column body which are sequentially connected, the bush part is sleeved on the connecting part body and the first column body, the outer diameter of the second column body is larger than that of the first column body, the outer diameter of the third column body is smaller than that of the second column body, two ends of the second column body abut against the bush part body and the printed circuit board respectively, and the third column body is fixedly connected with the printed circuit board.

Optionally, the cavity filter further includes a hollow outer conductor support column, the outer conductor support column is installed on the cover plate, the connector is fixedly connected to an inner wall of the outer conductor support column, and the outer conductor support column surrounds the connector and the contact assembly.

Optionally, the outer conductor support column and the cover plate are integrally formed.

Optionally, the outer conductor support column surrounds one end of the contact assembly and abuts against the printed circuit board.

The application also discloses a communication device, which comprises the cavity filter.

According to the cavity filter, the contact assembly is additionally arranged on the printed circuit board, so that the inner core of the connector is connected with the printed circuit board through the contact assembly, the problem that the connector is easy to loosen after being directly connected with the printed circuit board in an opposite insertion mode is solved, the signal stability between the connector and the printed circuit board can be improved, and the signal transmission stability of the cavity filter is further improved; and still be equipped with the guide portion on the contact module, greatly made things convenient for the assembly between contact module and the connector, do benefit to installation, the alignment between connector and the printed circuit board, inside the assembly personnel need not accurate counterpoint just can insert the inner core of connector into contact module like this for the assembly of cavity filter is simple, thereby improves assembly efficiency.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a schematic cross-sectional view of a cavity filter provided in an embodiment of the present application;

fig. 2 is an exploded schematic view of a cavity filter provided in an embodiment of the present application;

fig. 3 is a schematic view of a contact assembly provided in an embodiment of the present application.

100, a cavity filter; 110. a cavity; 120. a cover plate; 130. a connector; 131. an inner core; 132. a main body; 140. a printed wiring board; 141. mounting holes; 142. a chamfering structure; 143. a raised structure; 150. a contact assembly; 151. a bushing portion; 152. a plug-in part; 153. a guide section; 154. an interface section; 155. a first column; 156. a second cylinder; 157. a third column; 160. outer conductor support post.

Detailed Description

It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.

Terms of orientation or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are described based on the orientation or relative positional relationship shown in the drawings, are simply for convenience of description of the present application, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, and integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The present application is described in detail below with reference to the drawings and alternative embodiments, and it should be noted that any combination of the embodiments or technical features described below can form a new embodiment without conflict.

As shown in fig. 1 and fig. 2, the present application discloses a cavity filter 100, where the cavity filter 100 includes a cavity 110, a cover plate 120 covering the cavity 110, and a connector 130, the connector 130 may be mounted on the cover plate 120, the cavity 110, or both the cover plate 120 and the cavity 110, where the connector 130 may be directly mounted on the cover plate 120 and/or the cavity 110, or may be indirectly mounted on the cover plate 120 and/or the cavity 110 through a support, a press block, a ground block, or other structure.

A printed circuit board 140 is arranged in the cavity 110, the printed circuit board 140 is positioned right below the connector 130, a contact assembly 150 is arranged on the printed circuit board 140, the connector 130 has a main body 132 and an inner core 131 arranged on the main body 132, the inner core 131 of the connector 130 is inserted into the contact assembly 150 and is communicated with a circuit on the printed circuit board 140 through the contact assembly 150; the contact assembly 150 is provided with the guide portion 153 for guiding the inner core 131 of the connector 130 to be inserted into the contact assembly 150, so that an assembler can insert the inner core 131 of the connector 130 into the contact assembly 150 quickly without aligning the inner core 131 of the connector 130 with the insertion hole in the contact assembly 150 accurately, and the assembly efficiency is improved.

It is understood that the contact assembly 150 should be provided with a connection hole into which the core 131 is inserted, the guide portion 153 should be an open structure, and the opening of the guide portion 153 communicates with the connection hole of the contact assembly 150, so that the core 131 can be smoothly inserted into the contact assembly 150 through the guide portion 153. Wherein the guide portion 153 may be a flared structure whose opening gradually increases in a direction toward the body 132; the guide 153 may also be an arc transition structure provided at the edge of the opening toward one end of the body 132; the guide 153 may also be any other structure that facilitates the smooth insertion of the inner core 132 into the contact assembly 150, and is not limited in this application.

According to the invention, the inner core 131 of the connector 130 is connected with the printed circuit board 140 through the contact component 150 by additionally arranging the contact component 150 on the printed circuit board 140, so that the problem that the connector 130 is easy to loosen after being directly connected with the printed circuit board 140 in an opposite insertion manner is avoided, the signal stability between the connector 130 and the printed circuit board 140 can be improved, and the signal transmission stability and reliability of the cavity filter 100 are further improved. In addition, the contact assembly 150 is further provided with a guide portion 153, which is beneficial to the installation and alignment between the connector 130 and the printed circuit board 140, greatly facilitates the assembly between the contact assembly 150 and the connector 130, simplifies the assembly of the cavity filter 100, and improves the assembly efficiency.

In the embodiment of the present application, as shown in fig. 3, the contact assembly 150 is a split structure, the contact assembly 150 includes a bushing portion 151 and a plug portion 152, the bushing portion 151 is sleeved on one end of the plug portion 152, and the other end of the plug portion 152 is fixedly connected to the printed circuit board 140; a guide portion 153 is provided at an end of the bushing portion 151 facing the connector 130, and the core 131 is inserted into the insertion part 152 through the guide portion 153.

In the assembling process, the bushing portion 151 and the inserting portion 152 may be connected and fixed by crimping, screwing, or bonding, and then the inserting portion 152 is fixed on the printed circuit board 140.

Specifically, as shown in fig. 1 and 3, the bushing portion 151 and the insertion portion 152 are cylindrical structures with hollow interiors, and the bushing portion 151 and the insertion portion 152 are communicated with each other. Because the plug portion 152 and the bushing portion 151 are both hollow inside, i.e., the entire contact assembly 150 is hollow inside, the inner core 131 of the connector 130 can be inserted into a small portion of the contact assembly 150 or a large portion of the contact assembly 150, so that the contact assembly 150 can meet the use requirements of a plurality of different types of connectors 130.

Alternatively, as shown in fig. 1 and 3, the guide portion 153 has a flared opening structure, and the opening of the guide portion 153 gradually increases in a direction toward the main body 132, that is, the guide portion 153 has a horn-shaped structure. Based on this, before the inner core 131 is inserted into the contact assembly 150, the large opening of the guiding portion 153 faces the inner core 131, so that the inner core 131 can be inserted smoothly, in the process of inserting the inner core 131 into the contact assembly 150, the opening of the guiding portion 153 is tapered, so that good guiding and limiting effects can be provided for the inner core 131, further, the installation and alignment between the connector 130 and the printed circuit board 140 are facilitated, the assembly between the contact assembly 150 and the connector 130 is greatly facilitated, the assembly of the cavity filter 100 is simple, and the assembly efficiency is improved.

Specifically, as shown in fig. 3, the plug-in connection part 152 includes a connecting part 154, a first column 155, a second column 156 and a third column 157 which are connected in sequence, and the bushing part 151 is sleeved on the connecting part 154 and the first column 155.

Alternatively, as shown in fig. 3, the connecting portion 154 is composed of a plurality of sheet-like structures surrounding the central axis of the inserting portion 152, and the top of each sheet-like structure is gradually enlarged in the direction toward the main body 132; thus, when the inner core 131 of the connector 130 is inserted into the connecting port 154, the inner diameter of the top end of the connecting port 154 is larger, so that the inner core 131 can be conveniently inserted, and when the inner core 131 is continuously downward, the inner diameter of the connecting port 154 is smaller, so that the inner core 131 can be clamped, the connection stability between the inner core 131 and the contact assembly 150 is improved, the contact strength between the inner core 131 and the contact assembly 150 is enhanced, and the connection stability between the connector 130 and the contact assembly 150 is further improved.

Optionally, as shown in fig. 1 and fig. 3, an outer diameter of the second cylinder 156 is larger than an outer diameter of the first cylinder 155, an outer diameter of the third cylinder 157 is smaller than an outer diameter of the second cylinder 156, two ends of the second cylinder 156 abut against the bushing portion 151 and the printed circuit board 140, and the third cylinder 157 is fixedly connected with the printed circuit board 140. Since the outer diameter of the second cylinder 156 is larger than that of the first cylinder 155, a step structure is formed between the first cylinder 155 and the second cylinder 156, which further facilitates abutting the bushing portion 151 against the second cylinder 156; meanwhile, since the outer diameter of the third cylinder 157 is smaller than the outer diameter of the second cylinder 156, a step structure is formed between the third cylinder 157 and the second cylinder 156, which is more convenient for abutting the second cylinder 156 against the printed circuit board 140. Accordingly, the connection stability among the bushing portion 151, the insertion portion 152, and the printed circuit board 140 is improved, and the connection stability between the contact assembly 150 and the printed circuit board 140 is further improved. Through the above design, the connection stability between the connector 130, the contact assembly 150, and the printed wiring board 140 is improved, thereby improving the signal transmission stability and reliability of the cavity filter 100.

In the embodiment of the present application, as shown in fig. 1 to 3, the printed circuit board 140 is provided with a mounting hole 141, and the plug portion 152 is fixedly connected to the printed circuit board 140 through the mounting hole 141. The mounting hole 141 may be a through hole, a blind hole, a groove, a stepped hole, a polygonal hole, a circular hole, a special-shaped hole, an irregular hole, or the like; the insertion portion 152 may be fixedly connected to the printed circuit board 140 through the mounting hole 141 by means of insertion, clamping, screwing, crimping, welding, or the like.

Illustratively, the outer peripheral wall of the end of the plug portion 152 away from the main body 132 is provided with a knurl, and the plug portion 152 and the mounting hole 141 are fixed by crimping. Alternatively, an external thread is arranged on the outer peripheral wall of one end of the insertion part 152 far away from the main body 132, an internal thread is arranged on the inner wall of the mounting hole 141, and the insertion part 152 is in threaded connection with the mounting hole 141.

In the embodiment of the present application, as shown in fig. 1 and fig. 2, a hollow cylindrical outer conductor supporting column 160 is further disposed in the cavity filter 100, the outer conductor supporting column 160 is mounted on the cover plate 120, the connector 130 is fixedly connected to an inner wall of the outer conductor supporting column 160, and the outer conductor supporting column 160 surrounds the connector 130 and the contact assembly 150. Based on this, the outer conductor support posts 160 may provide mounting locations for the connector 130 to the cavity filter 100, while the outer conductor support posts 160 surround the connector 130 and the contact assembly 150, which may shield signals from the connector 130 and prevent signal leakage or external signal ingress.

The connector 130 and the inner wall of the outer conductor support column 160 may be fixedly connected by a threaded connection or a knurled crimping connection. The outer conductor support column 160 may be an independent structural member, and is mounted on the cover plate in a manner of threaded connection, knurled crimping, splicing, clamping, interference crimping, and the like; the outer conductor support posts 160 may also be integrally formed with the cover plate 120 as an integral structure to improve assembly efficiency.

Optionally, the outer conductor support posts 160 abut the printed wiring board 140 around one end of the contact assembly 150; based on this, further shielding of the signals may be achieved upon the outer conductor support posts 160 surrounding the connector 130 and contact assembly 150.

The application also discloses a communication device, which comprises the cavity filter 100.

The foregoing is a more detailed description of the present application in connection with specific embodiments thereof, and it is not intended that the present application be limited to the specific embodiments thereof. For those skilled in the art to which the present application pertains, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be considered as belonging to the protection scope of the present application.

Claims

1. A cavity filter comprises a cavity, a cover plate covering the cavity, and a connector, wherein the connector is provided with a main body and an inner core arranged on the main body;

the contact assembly is provided with a guide part for guiding the inner core to be inserted into the contact assembly.

2. The cavity filter of claim 1, wherein the contact assembly comprises a bushing portion and a plug portion, the bushing portion is sleeved at one end of the plug portion, and the other end of the plug portion is fixedly connected with the printed circuit board; the guide part is arranged at one end, facing the main body, of the lining part, and the inner core is inserted into the insertion part through the guide part.

3. The cavity filter of claim 2, wherein said printed circuit board has mounting holes, and said mating part is fixedly connected to said printed circuit board through said mounting holes.

4. The cavity filter of claim 3, wherein a knurling is provided on an outer peripheral wall of the end of the insertion part away from the main body, and the insertion part and the mounting hole are fixed by crimping through the knurling.

5. The cavity filter of claim 3, wherein an external thread is provided on an outer peripheral wall of the end of the insertion part away from the main body, an internal thread is provided on an inner wall of the mounting hole, and the insertion part is in threaded connection with the mounting hole.

6. The cavity filter of claim 2, wherein the bushing portion and the plug portion are of a cylindrical structure with a hollow interior, and the bushing portion and the plug portion are communicated with each other;

the guide part is of a flaring-shaped opening structure, and the opening of the guide part is gradually increased in the direction towards the main body;

the plug-in connection part comprises a connecting part, a first cylinder, a second cylinder and a third cylinder which are sequentially connected, the lining part is sleeved on the connecting part and the first cylinder, the outer diameter of the second cylinder is larger than that of the first cylinder, the outer diameter of the third cylinder is smaller than that of the second cylinder, two ends of the second cylinder are respectively abutted to the lining part and the printed circuit board, and the third cylinder is fixedly connected with the printed circuit board.

7. The cavity filter of claim 1, further comprising a hollow outer conductor support post mounted on the cover plate, the connector being fixedly connected to an inner wall of the outer conductor support post, the outer conductor support post surrounding the connector and the contact assembly.

8. The cavity filter of claim 7, wherein the outer conductor support posts are integrally formed with the cover plate.

9. The cavity filter of claim 7, wherein the outer conductor support posts abut the printed wiring board around one end of the contact assembly.

10. A communication device comprising the cavity filter of any one of claims 1-9.