A connection device and a radio frequency module

Abstract

The present application provides a connection device and a radio frequency module, which can simultaneously meet the use requirements of low cost, low configuration and high reliability. Specifically, the connection device includes a conductor assembly and a fixing structure, and the fixing structure is used to fix the conductor assembly; the conductor assembly includes an outer conductor, an inner conductor and an insulating elastic body, wherein the inner conductor covers the surface of the insulating elastic body, and the outer conductor and the inner conductor are electrically insulated.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a connection device and a radio frequency module. Background Art

[0002] With the development of wireless communication technology, the miniaturization, integration and modularization of wireless base stations have become the main development direction of wireless base stations. Generally, a wireless base station includes multiple devices such as a transceiver, a filter, an antenna, etc., and different devices are connected through connecting devices, such as RF connectors.

[0003] At present, depending on the connection scenarios between devices, the connection device can perform the connection between printed circuit boards (board to board) or the connection between printed circuit boards and devices such as filters. Taking board to board connection as an example, Figure 1 and Figure 2 They are schematic diagrams of the structures of two different connection devices used in the prior art to achieve board-to-board connection. Figure 1 As shown, the connection device may include an inner conductor component: an elastic contact pin 1 and an inner core 2. One end of the elastic contact pin 1 is connected to the circuit board 3 by abutting, the other end of the elastic contact pin 1 is connected to one end of the inner core 2, and the other end of the inner core 2 is connected to the circuit board 3. Therefore, the elastic contact pin 1 and the inner core 2 can form a path between the two circuit boards 3 to achieve signal transmission between the two circuit boards 3. Figure 2 As shown, the connecting device may include an insertion end 10, a connecting rod 20 and an introduction end 30. The insertion end 10 is welded on a circuit board 40, and the introduction end 30 is welded on another circuit board 40.

[0004] However, the structures of the above-mentioned two connecting devices are relatively complex and the cost is relatively high. In addition, in order to ensure that the connection between the device and the connecting device is not interrupted in the presence of external vibrations, that is, to ensure the high reliability of signal transmission between devices, the above-mentioned two connecting devices have certain stacking height (stacking height) requirements, which cannot meet the use requirements of low-profile high-profile scenarios. Summary of the invention

[0005] The present application provides a connection device and a radio frequency module, which can simultaneously meet the requirements of low cost, low configuration and high reliability.

[0006] In a first aspect, a connecting device is provided, which includes a conductor assembly and a fixing structure, wherein the fixing structure is used to fix the conductor assembly; the conductor assembly includes an outer conductor, an inner conductor and an insulating elastomer, wherein the inner conductor covers the surface of the insulating elastomer, and the outer conductor and the inner conductor are electrically insulated.

[0007] Through the connecting device provided by the present application, the inner conductor is combined with the insulating elastomer to form a connecting end, and the resilience of the insulating elastomer is utilized to ensure the high reliability of the connecting end when used for connection; and because the insulating elastomer can still maintain good resilience when the size is small, the insulating elastomer can meet the smaller size requirement, that is, low configuration and high requirement; in addition, the connecting device has a simple structure and a low preparation cost, which can meet the low cost requirement.

[0008] In combination with the first aspect, in certain implementations of the first aspect, the insulating elastomer is a ring-shaped structure; and the inner conductor covers the inner surface of the insulating elastomer.

[0009] The present application proposes a structure in which the inner surface of an insulating elastomer is covered with an inner conductor. The structure is simple, so when preparing the structure, a simple preparation method can be adopted, such as simultaneously extruding and cutting the constituent materials of the inner conductor and the insulating elastomer, which is easy to prepare and has a low preparation cost.

[0010] In combination with the first aspect, in certain implementations of the first aspect, the inner conductor further covers an end surface of the insulating elastomer.

[0011] By covering the end surface of the insulating elastic body with an inner conductor to form a connection end, the connection end can ensure full contact with the device when used to connect the device, and further improve the reliability of signal transmission between devices.

[0012] In combination with the first aspect, in certain implementations of the first aspect, the outer conductor covers an outer surface of the insulating elastomer.

[0013] The present application proposes a structure in which the outer surface of an insulating elastomer is covered with an outer conductor. The structure is simple, so when preparing the structure, a simple preparation method can be adopted, such as simultaneously extruding and cutting the constituent materials of the outer conductor and the insulating elastomer, which is easy to prepare and has a low preparation cost.

[0014] In combination with the first aspect, in certain implementations of the first aspect, the outer conductor further covers an end surface of the insulating elastomer.

[0015] By covering the end surface of the insulating elastic body with an outer conductor to form a connection end, the connection end can ensure full contact with the device when used to connect the device, and further improve the reliability of signal transmission between devices.

[0016] In combination with the first aspect, in certain implementations of the first aspect, the inner conductor also covers the outer surface of the insulating elastomer; the outer conductor is provided with a through hole, and the inner conductor, the insulating elastomer and the fixing column are arranged in the through hole.

[0017] The present application proposes a structure in which the outer surface of an insulating elastomer is covered with an inner conductor. The structure is simple, so when preparing the structure, a simple preparation method can be used, such as extruding and cutting the constituent materials of the inner conductor and the insulating elastomer at the same time. It is easy to prepare and has a low preparation cost. And by arranging the inner conductor, the insulating elastomer and the fixing column in the through hole of the outer conductor with a through hole, the outer conductor of the connecting device can play a role of shielding, isolation and impedance matching when connecting devices, thereby improving the reliability of signal transmission between devices. In addition, the outer conductor can be used as a structural member to fix the device when connecting the device, ensure the stability of the connection between the devices, and at the same time play a role of shielding, isolation and impedance matching.

[0018] In combination with the first aspect, in some implementations of the first aspect, the fixing structure is a fixing column; and a plug-in structure is provided between the fixing column and the conductor assembly.

[0019] The present application provides a plug-in structure between the fixing post and the conductor assembly. The structure is simple and convenient for the fixing post to fix and position the conductor assembly. When the fixing post and the conductor assembly are interference fit, the stability of the connection between the fixing post and the conductor assembly is further improved.

[0020] In combination with the first aspect, in some implementations of the first aspect, the fixing structure is provided with a through hole, and the conductor component is arranged in the through hole.

[0021] The fixing structure is provided with a through hole so that it can be used as a structural member. When the connecting device connects devices, the fixing structure can fix and position the conductor component while also being used to fix the device, thereby ensuring the stability of the connection between the devices and making the connecting device simple in structure, easy to prepare and low in cost.

[0022] In combination with the first aspect, in certain implementations of the first aspect, one end of the insulating elastomer is arc-shaped; the inner conductor covers the outer surface of the arc-shaped end of the insulating elastomer; the outer conductor is provided with a through hole, and the inner conductor, the insulating elastomer and the fixing column are arranged in the through hole.

[0023] By setting one end of the insulating elastic body to be in an arc shape, the rebound force of the connecting end can be reduced when the arc-shaped end is squeezed, thereby preventing the connected structure from being deformed due to the rebound force.

[0024] In combination with the first aspect, in certain implementations of the first aspect, a hole is provided at the other end of the insulating elastomer; the fixing structure is a columnar step-shaped structure; and a plug-in structure is formed between the fixing structure and the insulating elastomer through the hole and the columnar step-shaped structure.

[0025] By setting the fixed structure as a columnar step-like structure, when the height of the connecting device needs to be adjusted, it is only necessary to adjust the height of the fixed structure without adjusting the height of structures such as the insulating elastomer and the inner conductor. Therefore, the fixed structure is set as a columnar step-like structure, so that the height of the connecting device is easy to adjust.

[0026] In combination with the first aspect, in certain implementations of the first aspect, the insulating elastomer includes: silicone rubber; or, nitrile rubber; or, fluorosilicone rubber.

[0027] In combination with the first aspect, in some implementations of the first aspect, the inner conductor or the outer conductor includes: silver paste; or tin; or silver; or copper; or nickel; or an alloy.

[0028] In a second aspect, a radio frequency module is provided, comprising at least one device and a connecting device described in at least one of the implementation methods of the first aspect; the device is provided with an interface, the interface comprising an inner conductor connecting surface, an outer conductor connecting surface and an insulating area, the insulating area insulating the inner conductor connecting surface and the outer conductor connecting surface; one end of the inner conductor of the connecting device is connected to the inner conductor connecting surface, and one end of the outer conductor of the connecting device is connected to the outer conductor connecting surface.

[0029] In combination with the second aspect, in some implementations of the second aspect, the device includes a circuit board, or a filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a connection device in the prior art to achieve board-to-board connection;

[0031] Figure 2 It is a structural schematic diagram of another connection device in the prior art to achieve board-to-board connection;

[0032] Figure 3 is a top view of a device interface provided in an embodiment of the present application;

[0033] Figure 4 is a structural diagram of a specific example of a radio frequency module provided in an embodiment of the present application;

[0034] Figure 5 is a structural schematic diagram of a specific example of a connecting device provided in an embodiment of the present application;

[0035] Figure 6 is a structural diagram of a specific example of a radio frequency module provided in an embodiment of the present application;

[0036] Figure 7 is a structural schematic diagram of a specific example of a connecting device provided in an embodiment of the present application;

[0037] Figure 8 is a structural diagram of a specific example of a radio frequency module provided in an embodiment of the present application;

[0038] Fig. 9 is a structural schematic diagram of a specific example of a connecting device provided in an embodiment of the present application;

[0039] Fig.10 is a structural diagram of a specific example of a radio frequency module provided in an embodiment of the present application;

[0040] Fig.11 It is a structural schematic diagram of a specific example of a connecting device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0042] In order to facilitate those skilled in the art to understand the technical solution of the present application, the use scenarios of the connecting device are first introduced below.

[0043] The connecting device, sometimes also referred to as an inter-board connecting device or an inter-board connector, is mainly used for interconnection between devices that need to be connected, such as circuit boards, filters, antennas, etc. A radio frequency connector is a common connecting device used to achieve connection between radio frequency devices. For example, when realizing the connection between printed circuit boards (PCBs), that is, the connection between boards, the two connected circuit boards are usually parallel to each other and spaced apart, that is, the connecting device can be connected between two parallel circuit boards, thereby achieving electrical connection between the circuit boards. Usually, there are electrical connection points such as a first signal terminal and a second signal terminal on the circuit board, that is, an interface, so the connecting device can achieve connectivity between the first signal terminals of the two circuit boards, and connectivity between the second signal terminals of the two circuit boards, that is, forming an effective path between the two circuit boards. Similarly, the connecting device can be used to achieve connection and connectivity between components such as circuit boards and filters, or can also be used to achieve connection and connectivity between components such as antennas and filters, or can also be used to achieve connection and connectivity between components such as filters and filters.

[0044] It should be understood that in the present application, electrical connection includes all connection modes that connect different conductive structures.

[0045] In order to connect circuit boards, filters and other devices that need to be connected, the present application provides a low-cost, low-profile, high-reliability connection device.

[0046] The connection device provided in the present application includes a conductor assembly and a fixing structure, and the fixing structure is used to fix the conductor assembly.

[0047] In a possible implementation, the connecting device may be disposed between devices to connect two devices to achieve electrical connection and signal transmission between the devices.

[0048] Among them, the device may include a radio frequency device, such as a PCB board, a filter, and other radio frequency devices that need to be connected, which is not limited in this application.

[0049] Optionally, a radio frequency module may include at least one radio frequency device and a connection device connected to the device.

[0050] The fixed structure can be fixedly connected to the device and connected to part or all of the structures in the conductor assembly to achieve the fixation and positioning of the conductor assembly. Optionally, the fixed structure can also be used to assist the conductor assembly to play a role in electrical connection and signal transmission. Among them, the fixed connection method between the fixed structure and the device may include: welding, riveting or injection molding, etc., which is not limited in this application. In addition, the fixed structure and part or all of the structures in the conductor assembly can be a detachable structure with an interference fit, so as to prevent the corresponding structure in the conductor assembly from falling off.

[0051] It should be understood that the fixed structure can be made of insulating material or conductive dielectric material. When the fixed structure is made of conductive dielectric material, it can be used to assist the conductor assembly to achieve electrical connection and signal transmission between devices.

[0052] It should also be understood that the fixed structure can be in a variety of shapes, such as columnar, cylindrical, annular, etc., and the present application does not limit this. For example, when the fixed structure is a columnar structure, the fixed structure can be connected to a portion of the through-hole structure in the conductor component to fix the through-hole structure portion; when the fixed structure is a cylindrical or annular structure, that is, the fixed structure can be provided with a through-hole, and part or all of the structure in the conductor component can be provided in the through-hole of the fixed structure.

[0053] The conductor assembly includes an outer conductor, an inner conductor and an insulating elastomer. Specifically, the inner conductor is made of a conductive dielectric material, covers the surface of the insulating elastomer, and plays a role in signal transmission; the outer conductor is also made of a conductive dielectric material, surrounded by the outer side of the inner conductor, or in other words, is arranged on the outer side of the inner conductor and is electrically insulated from the inner conductor, that is, there is a gap between the outer conductor and the inner conductor, and the outer conductor plays a role in shielding, isolation and impedance matching; the insulating elastomer is made of an electrically insulating non-metallic elastic material and has good elastic properties. For example, it can be considered to select an insulating elastomer whose compression permanent deformation after long-term aging is less than 15% when the compression amount of the insulating elastomer is 20%, so as to avoid long-term use without rebound and ensure good resilience.

[0054] It should be understood that in the embodiments of the present application, different impedance matching between the inner conductor and the outer conductor can be achieved by adjusting the structural parameters of the inner conductor and / or the outer conductor, or by adjusting the distance between the inner conductor and the outer conductor.

[0055] It should also be understood that the conductive medium material for preparing the inner conductor or the outer conductor can be any one or more of the following: silver paste, silver, tin, copper, nickel, alloy, which is not limited in this application. It should also be understood that the non-metallic elastic material for preparing the insulating elastomer can be any one or more of the following: silicone rubber, nitrile rubber, fluorosilicone rubber, which is not limited in this application.

[0056] In an embodiment of the present application, the insulating elastomer may be a solid structure, the surface of which may be a plane or an arc-shaped structure, for example, a sphere, an ellipsoid, a cylinder, a cube, an irregularly shaped three-dimensional structure, etc.; or the insulating elastomer may be a three-dimensional structure provided with through holes, blind holes, etc. For example, the insulating elastomer may be an annular structure, and it should be understood that the annular structure may be a circular ring, a square, a triangle, or an irregular shape, etc., which is not limited in the present application. For another example, the insulating elastomer may be an arched structure, an inverted U-shaped structure, a cap, etc., which is not limited in the present application.

[0057] In the embodiment of the present application, the inner conductor covers the surface of the insulating elastic body, including: the inner conductor covers part or all of the surface of the insulating elastic body, which is not limited in the present application. The conductive medium material used as the inner conductor can be selected from materials with good electrical properties and easy to combine with the insulating elastic body, such as various metal coatings such as silver paste.

[0058] Regarding the thickness of the inner conductor, considering the influence of the skin effect of high-frequency signals, the thickness of the inner conductor can be greater than the skin depth requirement. For example, when the conductive medium material of the inner conductor is silver paste, when the signal frequency transmitted by the inner conductor is 2.6 GHz, the thickness of the silver paste can be about 20 μm-25 μm.

[0059] Therefore, the connection end is formed by combining the inner conductor with the insulating elastomer, and the elastic properties of the insulating elastomer are utilized. After the connection end is compressed, it will deform and have good resilience, thereby ensuring the high reliability of the connection end when used for connection. For example, when the connection device is used to connect devices, problems such as assembly tolerances between devices, unevenness and roughness of the device surface, etc. will not affect the normal connection and signal transmission between the inner conductor and the device, thus ensuring the high reliability of the connection. And because the insulating elastomer can still maintain good resilience when it is small in size, it can meet the small size requirements and achieve low-profile high connection. In addition, the connection device has a simple structure, is easy to prepare, has a low preparation cost, and can achieve low-cost requirements.

[0060] Optionally, the connection device further includes a structural member, which can be fixed to the device by a fastener, that is, the structural member is used to fix the above-mentioned device, so as to ensure the stability of the connection between the devices. The structural member can be a structure other than the conductor assembly and the fixed structure; or the structural member can be a partial structure in the conductor assembly, such as an outer conductor, that is, the outer conductor plays the role of fixing, shielding isolation and impedance matching at the same time; or the structural member is a fixed structure, that is, the fixed structure plays the role of fixing the conductor assembly and the device at the same time.

[0061] It should be understood that the inner conductor and / or outer conductor may cover the surface of the insulating elastomer by at least one of the following methods: extrusion molding, electroplating, coating, sputtering, vapor deposition, and pad printing, which is not limited in the present application.

[0062] The following introduces the connection device provided in the present application by taking the example of a connection device used to connect two parallel PCB boards.

[0063] In order to achieve electrical connection between the PCB board and the connecting device, an interface is provided on the surface of the PCB board. Figure 3 The figure is a top view of an interface on a PCB board, which is used to realize electrical connection between the PCB board and the connection device. Figure 3 As shown, it includes an outer conductor connection surface 301 , an insulating area 302 and an inner conductor connection surface 303 .

[0064] It should be understood that in order to ensure the reliability of the connection between the interface and the connection device, in various scenarios, such as vibration, the size setting of the outer conductor connection surface and the inner conductor connection surface in the interface needs to be able to ensure that the electrical connection with the corresponding structure of the connection device is not interrupted. For example, the portion of the inner conductor included in the connection device that contacts the inner conductor connection surface of the interface is circular, and this portion is referred to as the inner conductor contact portion, and the portion of the outer conductor included in the connection device that contacts the outer conductor connection surface of the interface is annular, and this portion is referred to as the outer conductor contact portion, and the inner conductor connection surface and the outer conductor connection surface of the interface are as described above. Figure 3 In the shape shown, the diameter of the inner conductor connection surface 303 can be larger than the diameter of the circular inner conductor contact portion, and the inner diameter of the outer conductor connection surface 301 can be smaller than the inner diameter of the circular outer conductor contact portion, thereby ensuring that the connection between the interface and the connection device is not interrupted.

[0065] It should be understood that Figure 3 The interface shown may also exist on components connected to other connecting devices such as filters, and this application does not limit this.

[0066] Figure 4 A structural schematic diagram of a specific example of a radio frequency module provided in the present application is shown.

[0067] like Figure 4As shown, it is a cross-sectional view of a radio frequency module, which includes a connecting device and upper and lower components 41 and 42, wherein the connecting device includes a conductor component 44 and a fixing column 45, and optionally, the connecting device may also include a structural member 43.

[0068] The following, combined Figure 5 right Figure 4 The corresponding connection device is described, that is, Figure 5 A structural schematic diagram of a specific example of a connecting device provided in the present application is shown.

[0069] like Figure 5 (a) and (b) are respectively a cross-sectional view and a top view of the connecting device, wherein the connecting device comprises a conductor assembly 51 and a fixing column 53. Optionally, the connecting device may further comprise a structural member 52.

[0070] The structural member 52 may be a circular cylindrical structure and may be Figure 4 The upper and lower components 41 and 42 are connected by fasteners, such as screws, bolts, studs, rivets and other fasteners, that is, as long as the structural member can be connected and fixed to the component, the present application does not limit this.

[0071] The fixing column 53 may be a cylindrical structure and may be Figure 4 The device 42 in the device is fixedly connected, and plays a role in fixing and positioning the conductor component 51. Optionally, the fixed connection between the fixing column and the device includes welding, riveting, injection molding, etc., which is not limited in this application.

[0072] Optionally, the fixing post 53 and the conductor assembly 51 are coaxially arranged to form a plug-in structure. The fixing post and the conductor assembly can be interference fit, that is, the diameter of the fixing post 53 is larger than the inner diameter of the conductor assembly 51, thereby preventing the conductor assembly 51 from falling off.

[0073] Next, the structure of the conductor assembly 51 will be described.

[0074] In a specific example, the conductor assembly 51 is a circular cylindrical structure, including an insulating elastic body 511, an inner conductor 512 and an outer conductor 513. The insulating elastic body 511 is a circular cylindrical structure, and the inner conductor 512 and the outer conductor 513 cover the inner and outer surfaces of the insulating elastic body 511, respectively, or in other words, cover the inner and outer surfaces of the insulating elastic body 511, respectively.

[0075] When the conductor assembly is used to connect a device, for example, the conductor assembly 51 and Figure 3When the interface is connected as shown, one end of the inner conductor 512 of the conductor component 51 contacts the inner conductor connection surface 303 of the interface to achieve electrical connection, and one end of the outer conductor 513 contacts the outer conductor connection surface 301 of the interface to achieve electrical connection, and the inner and outer conductors are electrically insulated by an insulating elastomer. At this time, the conductor component 51 can achieve electrical connection and signal transmission between devices, that is, electrical connection and signal transmission between PCB boards. Optionally, the contact mode of one end of the inner conductor 512 and the inner conductor connection surface 303 of the interface can be pressed and abutted, and the contact mode of one end of the outer conductor 513 and the outer conductor connection surface 301 of the interface can be pressed and abutted.

[0076] In order to ensure sufficient contact between the conductor component and the device and improve the reliability of the conductor component in realizing signal transmission between devices, the outer diameter of one end of the inner conductor 512 of the above-mentioned conductor component 51 can be set to be smaller than the diameter of the inner conductor connecting surface 303, and the inner diameter of one end of the outer conductor 513 can be set to be larger than the inner diameter of the outer conductor connecting surface 301.

[0077] Regarding the preparation method of the conductor component 51, a possible implementation method is: first, the non-metallic elastic material and the conductive medium layer are extruded together; then cut to obtain a circular cylindrical structure with a certain length, for example, a circular cylindrical structure with a length of about 2 mm, at this time, the inner and outer surfaces of the circular cylindrical structure are respectively covered with conductive medium layers, wherein the conductive medium layer on the inner surface is the inner conductor, and the conductive medium layer on the outer surface is the outer conductor.

[0078] Optional, such as Figure 6 and 7 As shown, a conductive medium layer can also be covered on the end surface of the conductor component 51 shown above, so that the inner and outer conductors of the conductor component are in full contact with the inner and outer conductor connection surfaces of the upper and lower devices, thereby improving the reliability of the conductor component in realizing signal transmission between the upper and lower devices.

[0079] Right now Figure 6 A schematic diagram showing the structure of another specific example of a radio frequency module provided by the present application is shown. Figure 7 A structural schematic diagram of another specific example of a connecting device provided in the present application is shown.

[0080] It should be noted that Figure 6 The partial structure of the RF module shown is similar to Figure 4 The same as in Figure 7 The partial structure of the connecting device shown is similar to Figure 5 The same as in, therefore, Figure 6 and Figure 7 The structures in can be referred to separately Figure 4 , 5 The introduction in will not be repeated here.

[0081] like Figure 6 As shown, it is a cross-sectional view of a radio frequency module, which includes a connecting device and upper and lower components 61 and 62, wherein the connecting device includes a conductor component 64 and a fixing column 65, and optionally, the connecting device may also include a structural member 63.

[0082] The following, combined Figure 7 right Figure 6 The corresponding connection device is described, that is, Figure 7 A structural schematic diagram of a specific example of a connecting device provided in the present application is shown.

[0083] like Figure 7 (a) and (b) are respectively a cross-sectional view and a top view of the connecting device, wherein the connecting device comprises a conductor assembly 71 and a fixing column 73 . Optionally, the connecting device may further comprise a structural member 72 .

[0084] about Figure 7 The description of the middle structure 72 and the fixing column 73 can be referred to above. Figure 5 The specific description of the corresponding structure in . That is, 52 and 53 are replaced by 72 and 73 respectively.

[0085] and Figure 5 The difference between the conductor assembly 51 and Figure 7 The conductor component 71 in the embodiment is covered with a conductive medium at its end surface. In a specific example, the conductor component 71 is a circular cylindrical structure, including an insulating elastic body 711, inner conductors 712, 714, and outer conductors 713, 715.

[0086] The insulating elastic body 711 is a circular cylindrical structure, and the inner conductor and the outer conductor cover the surface of the insulating elastic body. Furthermore, the inner conductor includes an inner conductor 714 on the inner surface and an inner conductor 712 on the end surface, which are electrically connected; the outer conductor includes an outer conductor 715 on the outer surface and an outer conductor 713 on the end surface, which are also electrically connected; in addition, there is a gap between the inner conductor 712 on the end surface and the outer conductor 713 on the end surface, that is, the inner and outer conductors are electrically insulated.

[0087] When the conductor assembly is used to connect the device, for example, the conductor assembly 71 and Figure 3When the interface is connected as shown, the inner conductor 712 of the end face of the conductor component 71 contacts the inner conductor connection surface 303 of the interface to achieve electrical connection, and the outer conductor 713 of the end face contacts the outer conductor connection surface 301 of the interface to achieve electrical connection. At this time, the conductor component 71 can achieve electrical connection and signal transmission between devices, that is, electrical connection and signal transmission of the PCB board. Optionally, the contact method of the inner conductor 712 of the end face and the inner conductor connection surface 303 of the interface can be pressed and abutted, and the contact method of the outer conductor 713 of the end face and the outer conductor connection surface 301 can be pressed and abutted.

[0088] In order to ensure sufficient contact between the conductor assembly and the device and improve the reliability of the conductor assembly in realizing signal transmission between devices, the outer diameter of the end face inner conductor 712 of the conductor assembly 71 can be set to be smaller than the diameter of the inner conductor connecting surface 303 of the interface, and the inner diameter of the end face outer conductor 713 of the conductor assembly 71 can be set to be larger than the inner diameter of the outer conductor connecting surface 301 of the interface.

[0089] Regarding the preparation method of the conductor component 71, one possible implementation method is: first, the non-metallic elastic material and the conductive medium layer are extruded together; then, they are cut to obtain a circular cylindrical structure with a certain length, for example, a circular cylindrical structure with a length of about 2 mm, at which time the inner and outer surfaces of the circular cylindrical structure are respectively covered with conductive medium layers, wherein the conductive medium layer on the inner surface belongs to the inner conductor, and the conductive medium layer on the outer surface belongs to the outer conductor; finally, silver paste is coated or printed on the two end faces of the structure and baked to obtain the end face inner conductor and the end face outer conductor.

[0090] Figure 8 A schematic structural diagram of another specific example of a radio frequency module provided in the present application is shown.

[0091] like Figure 8 , which is a cross-sectional view of a radio frequency module, the radio frequency module includes a connecting device and upper and lower components 81 , 82 , wherein the connecting device includes conductor components 83 , 84 , and a fixing column 85 .

[0092] In a specific example, the conductor assembly specifically includes an outer conductor 83 and an inner conductor component 84 composed of an inner conductor and an insulating elastic body. In this case, the outer conductor 83 can also be called a structural component, that is, the outer conductor 83 can not only play a role in shielding, isolation and impedance matching, but also can be used to fix the upper and lower components 81 and 82. Figure 8The outer conductor 83 shown is a circular cylindrical structure, as a structural member, there is a certain distance between the inner conductor 84, that is, the outer conductor and the inner conductor are not in contact, thereby ensuring electrical insulation between the inner and outer conductors. In addition, the outer conductor 83 is connected to the upper and lower components 81 and 82 by fasteners, such as screws, bolts, studs, rivets and other fasteners, that is, as long as the outer conductor can be connected and fixed to the component, this application does not limit this.

[0093] The following, combined Fig. 9 right Figure 8 The corresponding connection device is described, that is, Fig. 9 A structural schematic diagram of a specific example of a connecting device provided in the present application is shown.

[0094] like Fig. 9 (a) and (b) are respectively a cross-sectional view and a top view of a connecting device, which includes conductor components 91, 92 and a fixing column 93, wherein the conductor component includes an outer conductor 92 and an inner conductor component 91 composed of an inner conductor and an insulating elastomer.

[0095] It should be understood that the conductor components 91 and 92 are respectively Figure 8 The conductor components 84 and 83 are the same, and their introduction can be referred to Figure 8 See the relevant instructions in .

[0096] Optionally, the fixing column 93 is a cylindrical structure and can be Figure 8 The device 82 in the inner guide member 91 is fixedly connected to the inner guide member 91, and plays a role in fixing and positioning the inner guide member 91. Optionally, the fixing connection between the fixing column and the device includes welding, riveting, injection molding, etc., which is not limited in this application.

[0097] Optionally, the fixing column 93 is coaxially arranged with the inner guide component 91 and is a plug-in structure. To prevent the inner guide component 91 from falling off, the fixing column and the inner guide component are interference fit, that is, the diameter of the fixing column 93 is larger than the inner diameter of the inner guide component 91.

[0098] Next, the structure of the inner guide member 91 will be described.

[0099] In a specific example, the inner conductor component 91 is a circular cylindrical structure, including an insulating elastic body 911 and inner conductors 912, 913, 914. The insulating elastic body 911 is a circular cylindrical structure, and the inner conductors 912, 913, 914 cover the end surface, the inner surface, and the outer surface of the insulating elastic body respectively, that is, the inner conductor completely wraps the insulating elastic body.

[0100] When the conductor assembly is used to connect a device, for example, the outer conductor 92 and the inner conductor 91 are connected to Figure 3When the interface is connected, the inner conductor 912 included in the inner conductor component 91 contacts the inner conductor connection surface 303 of the interface to achieve electrical connection, and one end of the outer conductor 92 contacts the outer conductor connection surface 301 of the interface to achieve electrical connection. At this time, the conductor assembly can achieve electrical connection and signal transmission between devices, that is, electrical connection and signal transmission between PCB boards. Optionally, the inner conductor 912 and the inner conductor connection surface 303 can be contacted by pressing and abutting, and the outer conductor 92 and the outer conductor connection surface 301 can be contacted by pressing and abutting through fasteners.

[0101] In order to ensure sufficient contact between the conductor assembly and the device and improve the reliability of the conductor assembly in realizing signal transmission between devices, the outer diameter of the above-mentioned inner conductor 912 can be set to be smaller than the diameter of the inner conductor connecting surface 303, and the inner diameter of one end of the outer conductor 92 can be set to be larger than the inner diameter of the outer conductor connecting surface 301.

[0102] Regarding the preparation method of the inner conductor component 91, one possible implementation method is: first, the non-metallic elastic material and the conductive medium layer are extruded together; then they are cut to obtain a circular cylindrical structure with a certain length, for example, a circular cylindrical structure with a length of 2 mm. At this time, the inner and outer surfaces of the circular cylindrical structure are respectively covered with conductive medium layers, and the conductive medium layers are both inner conductors; finally, silver paste is coated or printed on the two end surfaces of the structure and baked to obtain the inner conductors of the end surfaces.

[0103] Fig.10 A schematic structural diagram of another specific example of a radio frequency module provided in the present application is shown.

[0104] like Fig.10 , which is a cross-sectional view of a radio frequency module, the radio frequency module includes a connecting device and upper and lower components 101 , 102 , wherein the connecting device includes conductor components 103 , 104 , and a fixing column 105 .

[0105] Optionally, the conductor assembly specifically includes an outer conductor 103 and an inner conductor component 104 composed of an inner conductor and an insulating elastic body. In this case, the outer conductor 103 can also be called a structural component, that is, the outer conductor 103 can not only play a role in shielding, isolation and impedance matching, but also can be used to fix the upper and lower devices 101 and 102. Fig.10 The outer conductor 103 shown is a circular cylindrical structure, as a structural member, there is a certain distance between the inner conductor component 104, that is, the outer conductor and the inner conductor component are not in contact, thereby ensuring electrical insulation between the inner and outer conductors. In addition, the outer conductor 103 is connected to the upper and lower components 101 and 102 by fasteners, such as screws, bolts, studs, rivets and other fasteners, that is, as long as the outer conductor can be connected and fixed to the component, this application does not limit this.

[0106] The following, combined Fig.11 right Fig.10 The corresponding connection device is described, that is, Fig.11 A structural schematic diagram of a specific example of a connecting device is shown and claimed.

[0107] like Fig.11 (a) and (b) are respectively a cross-sectional view and a top view of a connecting device, wherein the connecting device comprises conductor components 111, 112 and a fixing post 113, wherein the conductor component comprises an outer conductor 112 and an inner conductor component 111 composed of an inner conductor and an insulating elastomer.

[0108] It should be understood that the conductor components 111 and 112 are respectively Fig.10 The conductor components 104 and 103 are the same, and their introduction can be referred to Fig.10 See the relevant instructions in .

[0109] In a specific example, the fixing column 113 is a cylindrical step-shaped structure, which can be Fig.10 The device 102 in the inner part is fixedly connected, and plays a role in fixing and positioning the inner guide component 111. Optionally, the connection between the fixing column and the device includes welding, riveting, injection molding, etc., which is not limited in this application.

[0110] In a specific example, the fixing column 113 is coaxially arranged with the inner guide component 111 and is a plug-in structure. To prevent the inner guide component 111 from falling off, the fixing column and the inner guide component are interference fit, that is, the diameter of the upper part of the fixing column 113 is larger than the hole diameter of the inner guide component 111.

[0111] Next, the structure of the inner guide member 111 will be described.

[0112] In a specific example, the inner conductor component 111 is an arched columnar structure, including an insulating elastic body 1111 and an inner conductor 1112. The insulating elastic body 1111 is an arched columnar structure with an opening at one end, and the inner conductor 1112 covers the outer surface of the insulating elastic body 1111. Optionally, the inner conductor 1112 may also cover the inner surface of the insulating elastic body 1111.

[0113] By adopting an arched structure at the top of the inner guide component, the rebound force of the inner guide component caused by compression can be reduced, so that when the inner guide component is used to connect a device, the deformation of the contact portion of the device with the inner guide component can be reduced.

[0114] Optionally, the inner conductor 1112 is connected to the fixing column 113. When used to connect devices, the fixing column 113 can use a conductive medium, so that the fixing column can not only play the role of fixing and positioning, but also play the role of electrical connection and signal transmission. In addition, the fixing column adopts a step shape, which can facilitate the adjustment of the height. For example, when the distance between devices needs to be adjusted, there is no need to adjust the height of the inner conductor component. By adjusting the height of the fixing column, the distance change between the devices can be adapted.

[0115] When the conductor assembly is used to connect a device, for example, the outer conductor 112 and the inner conductor 111 are connected to Figure 3 When the interface is connected, the inner conductor 1112 included in the inner conductor component 111 contacts the inner conductor connection surface 303 of the interface to achieve electrical connection, and one end of the outer conductor 112 contacts the outer conductor connection surface 301 of the interface to achieve electrical connection. At this time, the conductor assembly can achieve electrical connection and signal transmission between devices, that is, electrical connection and signal transmission between PCB boards. Optionally, the inner conductor 1112 and the inner conductor connection surface 303 can be contacted by pressing and abutting, and the outer conductor 112 and the outer conductor connection surface 301 can be contacted by pressing and abutting through fasteners.

[0116] In order to ensure sufficient contact between the conductor component and the device and improve the reliability of the conductor component in realizing signal transmission between devices, the above-mentioned Fig.11 In the top view (b), the outer diameter of the inner conductor 1112 is smaller than the diameter of the inner conductor connecting surface 303 , and the inner diameter of one end of the outer conductor 112 is larger than the inner diameter of the outer conductor connecting surface 301 .

[0117] Regarding the preparation method of the inner conductive component 111, a possible implementation method is: first, a non-metallic elastic material is molded into an insulating elastomer with an arched structure; then a conductive medium layer is added to the outer surface of the insulating elastomer by coating or electroplating, and the conductive medium layer is the inner conductor.

[0118] It can be understood that for the convenience of description, the RF module example in the drawings of the present application includes two upper and lower devices connected to the connecting device, but the present application does not limit the RF module to include two devices connected to the connecting device. The number of devices connected to the connecting device can also be one or more.

[0119] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the device or unit can be electrical or other forms.

[0120] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A connection device, characterized in that: The connecting device comprises a conductor assembly and a fixing structure, wherein the fixing structure is used to fix the conductor assembly; The conductor assembly includes an outer conductor, an inner conductor and an insulating elastomer, wherein the conductive medium of the inner conductor covers the inner surface and end surface of the insulating elastomer, the inner surface is electrically connected to the end surface, and the outer conductor and the inner conductor are electrically insulated.

2. The connection device according to claim 1, characterized in that The insulating elastic body is a ring-shaped structure.

3. The connection device according to claim 2, characterized in that The outer conductor covers the outer surface of the insulating elastic body.

4. The connection device according to claim 3, characterized in that The outer conductor also covers an end surface of the insulating elastic body.

5. The connection device according to claim 2, characterized in that: The fixing structure is a fixing column, and the inner conductor also covers the outer surface of the insulating elastic body; The outer conductor is provided with a through hole, and the inner conductor, the insulating elastic body and the fixing column are arranged in the through hole.

6. The connection device according to claim 1 or 2, characterized in that: The fixed structure is a fixed column; There is a plug-in structure between the fixing column and the conductor assembly.

7. The connection device according to claim 1 or 2, characterized in that: The fixing structure is provided with a through hole, and the conductor component is arranged in the through hole.

8. The connection device according to claim 1, characterized in that One end of the insulating elastic body is arc-shaped; The inner conductor covers the outer surface of one arc-shaped end of the insulating elastic body; The outer conductor is provided with a through hole, the fixing structure is a fixing column, and the inner conductor, the insulating elastic body and the fixing column are arranged in the through hole.

9. The connection device according to claim 8, characterized in that The other end of the insulating elastic body is provided with a hole; The fixed structure is a columnar step-shaped structure; A plug-in structure is formed between the fixing structure and the insulating elastic body through the hole and the columnar step-shaped structure.

10. The connection device according to claim 1 or 2, characterized in that: The insulating elastic body comprises: Silicone rubber, or nitrile rubber, or fluorosilicone rubber.

11. The connection device according to claim 1 or 2, characterized in that: The inner conductor or the outer conductor comprises: Silver paste, or tin, or silver, or copper, or nickel, or alloy.

12. A radio frequency module, characterized in that: Comprising at least one device and at least one connecting device according to any one of claims 1 to 11; The device is provided with an interface, the interface comprising an inner conductor connection surface, an outer conductor connection surface and an insulating region, the insulating region insulating the inner conductor connection surface and the outer conductor connection surface; One end of the inner conductor of the connecting device is connected to the inner conductor connecting surface, and one end of the outer conductor of the connecting device is connected to the outer conductor connecting surface.

13. The radio frequency module according to claim 12, characterized in that: The device includes a circuit board, or a filter.

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