Plug connectors and RF connector assemblies

Abstract

The present invention discloses a plug connector and a radio frequency connector assembly, wherein the plug connector includes a plug insulating body, a plug shielding upper shell, a plug insulating lower shell, at least two plug low-frequency signal terminals, at least two plug high-frequency signal terminals, and a plug shielding spacer. The plug shielding spacer is arranged on the plug insulating body and is located between the plug low-frequency signal terminal and the plug high-frequency signal terminal, and includes a spacer body and a tongue structure, the tongue structure is exposed to the lower side surface of the rear part of the body, the lower side surface of the tongue structure is connected to the plug shielding lower shell, and the end face of the tongue structure is connected to the plug shielding upper shell. Compared with the prior art, the plug connector can realize the transmission of low-frequency signals and high-frequency signals at the same time, and can effectively prevent signal interference between low-frequency signals and high-frequency signals, thereby improving the signal transmission quality. In addition, the plug connector has a large structural strength and excellent anti-collision performance during assembly and transportation.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical connectors, and in particular to a plug connector and a radio frequency connector assembly. Background Art

[0002] With the rapid economic development and technological progress, the 5G era has higher and higher requirements for the transmission function and transmission speed of electronic products. At present, for electrical connectors, multi-channel RF connectors are required to match the future 5G multi-channel transmission, and the products tend to be miniaturized and micronized to fully utilize the space.

[0003] The existing sunken plate type electrical connector generally adopts an integrated shielding shell. This structure is prone to non-conduction during the welding process, which causes signal leakage and interference during the transmission process, affecting the signal transmission function of the electrical connector. In addition, the existing sunken plate type electrical connector generally cannot realize the transmission of high-frequency signals and low-frequency signals at the same time. Summary of the invention

[0004] The embodiment of the present application provides a plug connector that can simultaneously transmit high-frequency signals and low-frequency signals, and has a small product height, good shielding effect and anti-interference performance, and high mechanical structure strength.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A plug connector, comprising:

[0007] The plug insulating body comprises a body front portion and a body rear portion, wherein the lower side of the body front portion is convex to the lower side of the body rear portion;

[0008] A plug shielding upper shell, arranged on the upper side of the plug insulating body;

[0009] A plug shielding lower shell, connected to the plug shielding upper shell, and arranged on the lower side of the plug insulating body;

[0010] At least two plug low-frequency signal terminals are arranged on the plug insulating body, including a plug low-frequency contact portion, a plug low-frequency connecting portion and a plug low-frequency welding portion arranged in sequence, the plug low-frequency contact portion is exposed to the front side surface of the front part of the body, and the plug low-frequency welding portion is exposed to the lower side surface of the rear part of the body;

[0011] At least two plug high-frequency signal terminals are arranged on the plug insulating body, including a plug high-frequency contact portion, a plug high-frequency connecting portion and a plug high-frequency welding portion arranged in sequence, the plug high-frequency contact portion is exposed to the front side surface of the front part of the body, and the plug high-frequency welding portion is exposed to the lower side surface of the rear part of the body;

[0012] A plug shielding spacer is arranged on the plug insulating body and is located between the plug low-frequency signal terminal and the plug high-frequency signal terminal. The plug shielding spacer includes a spacer body and a tongue structure. The tongue structure is exposed to the lower side surface of the rear part of the body, the lower side surface of the tongue structure is connected to the plug shielding lower shell, and the end face of the tongue structure is connected to the plug shielding upper shell.

[0013] Preferably, the plug low-frequency signal terminal includes a first plug low-frequency signal terminal and a second plug low-frequency signal terminal, and the first plug low-frequency signal terminal is located above the second plug low-frequency signal terminal.

[0014] Preferably, the plug insulating body comprises a first insulating body and a second insulating body, the first plug low-frequency signal terminal is arranged on the first insulating body, and the second plug low-frequency signal terminal is arranged on the second insulating body.

[0015] Preferably, there is a gap between the upper surface of the welding portion of the second plug low-frequency signal terminal and the lower surface of the rear portion of the first insulating body.

[0016] Preferably, the plug high-frequency signal terminal includes two parts respectively located on both sides of all the plug low-frequency signal terminals, and the plug shielding spacer includes a first plug shielding spacer and a second plug shielding spacer, and the first plug shielding spacer and the second plug shielding spacer are mirror images of each other.

[0017] Preferably, the plug high-frequency signal terminal includes a first plug high-frequency signal terminal and a second plug high-frequency signal terminal, and the first plug high-frequency signal terminal is located above the second plug high-frequency signal terminal.

[0018] Preferably, the spacer body is L-shaped, including a first body portion and a second body portion, the first body portion is used to isolate the low-frequency contact portion of the plug from the high-frequency contact portion of the plug; the tongue structure is arranged on the second body portion, and the second body portion is used to shield the low-frequency connection portion of the plug from the high-frequency connection portion of the plug.

[0019] Preferably, the plug shielding upper shell includes a limiting through hole, and the plug shielding lower shell includes a positioning protrusion, and the positioning protrusion passes through the limiting through hole to connect the plug shielding upper shell and the plug shielding lower shell together.

[0020] Preferably, a first protruding structure is provided on the front side of the plug shielding upper shell, and a second protruding structure is provided on the front side of the plug shielding lower shell.

[0021] A radio frequency connector assembly, comprising a socket connector and any one of the above plug connectors, wherein:

[0022] The socket connector comprises a socket insulating body, a socket low-frequency signal terminal, a socket high-frequency signal terminal and a socket shielding spacer arranged on the socket insulating body, and a socket shielding shell arranged outside the insulating body, wherein the socket shielding spacer is arranged between the socket low-frequency signal terminal and the socket high-frequency signal terminal;

[0023] When the plug connector is mated with the socket connector, the plug low-frequency contact portion is connected to the socket low-frequency signal terminal, the plug high-frequency contact portion is connected to the socket high-frequency signal terminal, and the plug shielding spacer is in contact with the socket shielding spacer.

[0024] The beneficial effect of the present invention is that: by setting a plug shielding upper shell, a plug shielding lower shell and a plug shielding spacer that cooperate with each other, a plurality of shielding spaces are formed, and only a plug low-frequency signal terminal or a plug high-frequency signal terminal exists in each shielding space, so that the plug connector can effectively prevent signal interference between low-frequency signals and high-frequency signals while realizing the transmission of low-frequency signals and high-frequency signals at the same time, thereby improving the signal transmission quality. In addition, the plug shielding upper shell and the plug shielding lower shell are fixed together by welding, which improves the structural strength of the plug connector, and has excellent anti-collision performance during assembly and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of a plug connector according to an embodiment of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the plug connector in an embodiment of the present invention when viewed from bottom;

[0027] Figure 3 This is a schematic diagram of a structure in which a plug connector and a plug PCB board are fixed together in an embodiment of the present invention;

[0028] Figure 4 for Figure 3 The structural exploded view of the plug connector shown;

[0029] Figure 5 It is a schematic diagram of the structure of the plug insulating body in an embodiment of the present invention;

[0030] Figure 6 It is a schematic structural diagram of a plug shielding upper shell and a plug shielding lower shell in an embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of the low-frequency signal terminal of the plug in an embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram of the structure of the high-frequency signal terminal of the plug in an embodiment of the present invention;

[0033] Fig. 9 It is a schematic diagram of the structure of the plug shielding spacer in an embodiment of the present invention;

[0034] Fig.10 is a first cross-sectional schematic diagram of a plug connector in an embodiment of the present invention;

[0035] Fig.11 is a second cross-sectional schematic diagram of the plug connector in the embodiment of the present invention;

[0036] Fig.12 It is a structural schematic diagram of a radio frequency connector assembly in an embodiment of the present invention;

[0037] Fig.13 is a cross-sectional schematic diagram of a radio frequency connector assembly according to an embodiment of the present invention;

[0038] Fig.14 Schematic diagram of the structure of the socket connector in an embodiment of the present invention.

[0039] Reference numerals:

[0040] 100, plug connector; 110, plug insulation body; 110A, first insulation body; 110B, second insulation body; 111, body front; 112, body rear; 120, plug shielding upper shell; 121, limiting through hole; 122, first protrusion structure; 130, plug shielding lower shell; 131, positioning protrusion; 132, second protrusion structure; 140, plug low-frequency signal terminal; 140A, first plug low-frequency signal terminal; 140B, second plug low-frequency signal terminal; 141, plug low-frequency contact part; 142, plug low-frequency connection part; 143, plug low-frequency welding part; 150, plug high-frequency signal terminal; 150A, first plug high-frequency signal terminal; 150 B, second plug high-frequency signal terminal; 151, plug high-frequency contact part; 152, plug high-frequency connection part; 153, plug high-frequency welding part; 160, plug shielding spacer; 160A, first plug shielding spacer; 160B, second plug shielding spacer; 161, spacer body; 1611, first body part; 1611A, shielding protrusion; 1612, second body part; 162, tongue structure; 200, socket connector; 210, socket insulating body; 220, socket low-frequency signal terminal; 230, socket high-frequency signal terminal; 240, socket shielding spacer; 250, socket shielding shell; 010, plug PCB board; 020, socket PCB board; 030, connector. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0042] The embodiment of the present application provides a plug connector to solve the problems of poor signal transmission function of the submerged plate type electrical connector in the prior art and the inability to simultaneously realize the transmission of high-frequency and low-frequency signals. In this article, the direction of the socket connector relative to the plug connector in the RF connector assembly is the front, front end or front side, and the opposite direction is the rear, rear end or rear side; in the plug connector, the welding part of the plug low-frequency signal terminal is the bottom, lower end or lower side relative to the direction of the socket insulation body, and the opposite direction is the top, upper end or upper side.

[0043] like Figures 1 to 11 As shown, this is an embodiment of the present application:

[0044] A plug connector 100 includes a plug insulating body 110, a plug shielding upper shell 120 disposed on the upper side of the plug insulating body 110, a plug shielding lower shell 130 connected to the plug shielding upper shell 120 and disposed on the lower side of the plug insulating body 110, at least two plug low-frequency signal terminals 140 disposed on the plug insulating body 110, at least two plug high-frequency signal terminals 150 disposed on the plug insulating body 110, and a plug shielding spacer 160 disposed on the plug insulating body 110 and located between the plug low-frequency signal terminals 140 and the plug high-frequency signal terminals 150. Among them:

[0045] like Figure 5 As shown, the plug insulating body 110 includes a body front portion 111 and a body rear portion 112. The body front portion 111 is flush with the upper side of the body rear portion 112, and the lower side of the body front portion 111 is convex to the lower side of the body rear portion 112, that is, the plug insulating body 110 is similar to a "┏"-shaped structure or an inverted L-shaped structure.

[0046] like Figure 2 and Fig.13 As shown, the front end surface of the plug shielding upper shell 120 is flush with the front end surface of the plug shielding lower shell 130, and the rear end surface of the plug shielding upper shell 120 is located behind the plug shielding lower shell 130. When the plug shielding upper shell 120, the plug insulating body 110 and the plug shielding lower shell 130 are assembled together in order from top to bottom, the lower surface of the body rear part 112 is partially exposed between the rear end surface of the plug shielding upper shell 120 and the rear end surface of the plug shielding upper shell 130.

[0047] The plug low frequency signal terminal 140 includes a plug low frequency contact portion 141, a plug low frequency connection portion 142 and a plug low frequency welding portion 143 which are arranged in sequence. The plug low frequency contact portion 141 is exposed to the front side surface of the body front portion 111, and is used to contact the socket low frequency signal terminal 220 (shown later) in the socket connector 200 (shown later) to achieve power / signal transmission. The plug low frequency welding portion 143 is exposed to the lower side surface of the body rear portion 112, and is used to weld and fix the plug connector 100 and the plug PCB board 010 together. The plug low frequency contact portion 141 and the plug low frequency welding portion 143 are located on two planes perpendicular to each other.

[0048] The plug high-frequency signal terminal 150 includes a plug high-frequency contact portion 151, a plug high-frequency connection portion 152, and a plug high-frequency welding portion 153, which are arranged in sequence. The plug high-frequency contact portion 151 is exposed on the front side surface of the body front portion 111, and is used to contact the socket high-frequency signal terminal 230 (shown later) in the socket connector 200 to achieve power / signal transmission. The plug high-frequency welding portion 153 is exposed on the lower side surface of the body rear portion 112, and is used to weld and fix the plug connector 100 and the plug PCB board 010 together. The plug high-frequency contact portion 151 and the plug high-frequency welding portion 153 are located on two planes perpendicular to each other.

[0049] The plug shielding spacer 160 includes a spacer body 161 and a tongue structure 162, wherein the tongue structure 162 is exposed on the lower side surface of the body rear portion 112. Fig.10 As shown, the lower surface of the tongue structure 162 is connected to the plug shielding lower shell 130, and the end surface of the tongue structure 162 is connected to the plug shielding upper shell 120, so as to prevent the transmission signal from leaking out from the position where the plug shielding upper shell 120 and the plug shielding lower shell 130 are connected, thereby greatly improving the signal shielding function of the plug connector 100. At the same time, the plug shielding spacer 160 and the plug shielding upper shell 120 can form a plurality of shielding spaces, each of which contains only the plug low-frequency signal terminal 140 or the plug high-frequency signal terminal 150. When the plug connector 100 transmits high-frequency signals and low-frequency signals at the same time, the plug low-frequency signal terminal 140 and the plug high-frequency signal terminal 150 do not interfere with each other, which is conducive to improving the signal transmission function of the plug connector 100.

[0050] In order to solve the problems of poor signal transmission function of the sunken plate type electrical connector in the prior art and the inability to simultaneously realize the transmission of high-frequency signals and low-frequency signals, the present application forms multiple shielding spaces by setting up mutually matching plug shielding upper shell, plug shielding lower shell and plug shielding spacer. In each shielding space, there are only plug low-frequency signal terminals or plug high-frequency signal terminals, so that the plug connector can effectively prevent signal interference between low-frequency signals and high-frequency signals while realizing the transmission of low-frequency signals and high-frequency signals at the same time, thereby improving the signal transmission quality. In addition, the plug shielding upper shell and the plug shielding lower shell are fixed together by welding, which improves the structural strength of the plug connector and has excellent anti-collision performance during assembly and transportation.

[0051] Preferably, the plug high-frequency signal terminal 150 is located in a shielding space surrounded by the partition body 161, the tongue structure 162 and the plug shielding upper shell 120, which can effectively prevent the leakage of high-frequency signals and prevent interference with the low-frequency signal terminals, thereby effectively ensuring that the plug connector 100 transmits high-frequency signals and low-frequency signals while having excellent signal shielding and anti-signal interference functions.

[0052] Preferably, the plug low-frequency contact portion 141 is an arched structure, the plug low-frequency connection portion 142 is an L-shaped structure, the plug high-frequency contact portion 151 is an arched structure, and the plug high-frequency connection portion 152 is an L-shaped structure. The plug low-frequency contact portion 141 and the plug high-frequency contact portion 151 are arranged in an arched structure. When the plug connector 100 and the socket connector 200 are connected, the plug low-frequency signal terminal 140 and the socket low-frequency signal terminal 220 are in double-contact contact, which can improve the contact strength and improve the signal transmission quality. Similarly, the plug high-frequency signal terminal 150 and the socket high-frequency signal terminal 230 are also in double-contact contact, with high contact strength and good signal transmission quality. The plug low-frequency connection portion 142 and the plug high-frequency connection portion 152 are arranged in an L-shaped structure, which is simple in structure and easy to produce, and easy to arrange in the plug insulation body 110.

[0053] Preferably, the plug low-frequency signal terminal 140 includes a first plug low-frequency signal terminal 140A and a second plug low-frequency signal terminal 140B, and the first plug low-frequency signal terminal 140A is located above the second plug low-frequency signal terminal 140B. The plug low-frequency signal terminals 140 are arranged in two rows, one above the other, and by adjusting the structure and arrangement of the socket low-frequency connection part 142, such as adjusting the relative size and arrangement position of the socket low-frequency connection part 142, the height of the plug connector 100 can be greatly reduced without changing the height of the plug connector 100 or increasing the height of the plug connector 100 slightly, thereby meeting the development needs of product miniaturization and microminiaturization. More specifically, the contact part of the first plug low-frequency signal terminal 140A and the contact part of the second plug low-frequency signal terminal 140B are symmetrically arranged, which is conducive to further reducing the length of the plug connector 100, and the structure is simple and regular, which is convenient for production and processing.

[0054] Preferably, if Figure 4 and Fig.13 As shown, the plug insulating body 110 includes a first insulating body 110A and a second insulating body 110B, the first plug low-frequency signal terminal 140A is arranged on the first insulating body 110A, and the second plug low-frequency signal terminal 140B is arranged on the second insulating body 110B. More specifically, the first plug low-frequency signal terminal 140A is fixed together with the first insulating body 110A by insert-molding, and the second plug low-frequency signal terminal 140B is fixed together with the second insulating body 110B by insert-molding. During the assembly process of the plug connector 100, after the plug shielding spacer 160 is installed on the first plug low-frequency signal terminal 140A and the first insulating body 110A, which have been insert-molded into one body, the second plug low-frequency signal terminal 140B and the second insulating body 110B, which have been insert-molded into one body, are installed.

[0055] Preferably, if Fig.11 As described above, there is a gap between the upper side surface of the welding part of the second plug low-frequency signal terminal 140B and the lower side surface of the rear part of the body of the first insulating body 110A. When the welding part of the second plug low-frequency signal terminal 140B is welded and fixed to the plug PCB board 010, the excess tin material leaks into the gap, which not only makes the second plug low-frequency signal terminal 140B and the first insulating body 110A firmly connected together, but also avoids the uneven welding surface caused by welding, makes the welding surface flat, reduces the dimensional error, and improves the uniformity of product quality.

[0056] Preferably, if Figure 1 and Figure 4As shown, the plug high-frequency signal terminal 150 includes two parts respectively located on both sides of all the plug low-frequency signal terminals 140, that is, the plug high-frequency signal terminal 150 includes two parts, one part of the plug high-frequency signal terminal 150 is located on the left side of all the plug low-frequency signal terminals 140, and the other part is located on the right side of all the plug low-frequency signal terminals 140. The plug shielding spacer 160 includes a first plug shielding spacer 160A and a second plug shielding spacer 160B, and the first plug shielding spacer 160A and the second plug shielding spacer 160B are mirror structures of each other. When the first plug shielding spacer 160A is located between the leftmost plug low-frequency signal terminal 140 and the left high-frequency signal terminal 150, the second plug shielding spacer 160B is located between the rightmost plug low-frequency signal terminal 140 and the right high-frequency signal terminal 150, the left high-frequency signal terminal 150 is located in the shielding space surrounded by the first plug shielding spacer 160A and the plug shielding upper shell 120, and the right high-frequency signal terminal is located in the shielding space surrounded by the second plug shielding spacer 160B and the plug shielding upper shell 120.

[0057] Preferably, the plug high-frequency signal terminal 150 includes a first plug high-frequency signal terminal 150A and a second plug high-frequency signal terminal 150B, and the first plug high-frequency signal terminal 150A is located above the second plug high-frequency signal terminal 150B. It should be noted that the first plug high-frequency signal terminal 150A and the second plug high-frequency signal terminal 150B can be located on both sides of all the plug low-frequency signal terminals 140, respectively, or can be located on the same side of all the plug low-frequency signal terminals 140 at the same time. Exemplarily, the first plug high-frequency signal terminal 150A and the second plug high-frequency signal terminal 150B are located on the left side and / or right side of all the plug signal terminals 140 at the same time; Figure 1 As shown, the first plug high frequency signal terminal 150A is located on the left side of all the plug low frequency signal terminals 140 , and the second plug high frequency signal terminal 150B is located on the right side of all the plug low frequency signal terminals 140 .

[0058] Preferably, the spacer body 161 is L-shaped, including a first body portion 1611 and a second body portion 1612, that is, the first body portion 1611 is flush with the upper side of the second body portion 1612, and the lower side of the first body portion 1611 is convex from the second body portion 1612. The first body portion 1611 is used to isolate the plug low-frequency contact portion 141 and the plug high-frequency contact portion 151; the tongue structure 162 is provided in the second body portion 1612, and the second body portion 1612 is used to shield the plug low-frequency connection portion 142 and the plug high-frequency connection portion 152.

[0059] Preferably, the plug shielding upper shell 120 includes a limiting through hole 121, and the plug shielding lower shell 130 includes a positioning protrusion 131. The positioning protrusion 131 passes through the limiting through hole 121 and is used to connect the plug shielding upper shell 120 and the plug shielding lower shell 130 together, which is convenient for rapid positioning and assembly and improves production efficiency.

[0060] Preferably, a first protruding structure 122 is provided on the front side of the plug shielding upper shell 120 , and a second protruding structure 132 is provided on the front side of the plug shielding lower shell 130 .

[0061] like Figure 12 to Figure 14 As shown, a radio frequency connector assembly includes a socket connector 200 and any one of the above-mentioned plug connectors 100. The socket connector 200 includes a socket insulating body 210, a socket low-frequency signal terminal 220, a socket high-frequency signal terminal 230 and a socket shielding spacer 240 arranged on the socket insulating body 210, and a socket shielding shell 250 arranged outside the insulating body 210, and the socket shielding spacer 240 is arranged between the socket low-frequency signal terminal 220 and the socket high-frequency signal terminal 230.

[0062] When the plug connector 100 is mated with the socket connector 200 , the plug low frequency contact portion 141 is connected to the socket low frequency signal terminal 220 , the plug high frequency contact portion 151 is connected to the socket high frequency signal terminal 230 , and the plug shielding spacer 160 is in contact with the socket shielding spacer 240 .

[0063] like Fig.12 As shown, the plug connector 100 is fixed together with the plug PCB board 010, the socket connector 200 is fixed together with the socket PCB board 020, and the socket PCB board 020 is fixed on the connecting piece 030. When the plug connector 100 and the socket connector 200 are mated and connected, the plug connector 100, the plug PCB board 010, the socket connector 200 and the socket PCB board 020 can be fixed together through the connecting piece 030.

[0064] Preferably, a shielding protrusion 1611A is provided on the plug shielding spacer 160, and is located on the front side surface of the first body portion 1611 of the spacer body 161, and a groove structure that matches the shielding protrusion 1611A is provided on the socket shielding spacer 240. When the plug connector 100 is connected with the socket connector 200, the shielding protrusion 1611A is embedded in the groove structure to form a plurality of independent shielding spaces, and only high-frequency signals or low-frequency signals are transmitted in each shielding space, which is conducive to avoiding signal leakage or signal interference and improving signal transmission quality.

[0065] The insert molding is a molding method in which a pre-prepared insert of a different material is placed in a mold, and then resin is injected, and the molten material is bonded and solidified with the insert to form an integrated product.

[0066] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above-mentioned embodiments only express the implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A plug connector, characterized in that: include: The plug insulating body comprises a body front portion and a body rear portion, wherein the lower side of the body front portion is convex to the lower side of the body rear portion; A plug shielding upper shell, arranged on the upper side of the plug insulating body; A plug shielding lower shell, connected to the plug shielding upper shell, and arranged on the lower side of the plug insulating body; At least two plug low-frequency signal terminals are arranged on the plug insulating body, including a plug low-frequency contact portion, a plug low-frequency connecting portion and a plug low-frequency welding portion arranged in sequence, the plug low-frequency contact portion is exposed to the front side surface of the front part of the body, and the plug low-frequency welding portion is exposed to the lower side surface of the rear part of the body; At least two plug high-frequency signal terminals are arranged on the plug insulating body, including a plug high-frequency contact portion, a plug high-frequency connecting portion and a plug high-frequency welding portion arranged in sequence, the plug high-frequency contact portion is exposed to the front side surface of the front part of the body, and the plug high-frequency welding portion is exposed to the lower side surface of the rear part of the body; A plug shielding spacer is arranged on the plug insulating body and is located between the plug low-frequency signal terminal and the plug high-frequency signal terminal. The plug shielding spacer includes a spacer body and a tongue structure. The tongue structure is exposed to the lower side surface of the rear part of the body, the lower side surface of the tongue structure is connected to the plug shielding lower shell, and the end face of the tongue structure is connected to the plug shielding upper shell.

2. The plug connector according to claim 1, characterized in that: The plug low-frequency signal terminal includes a first plug low-frequency signal terminal and a second plug low-frequency signal terminal, and the first plug low-frequency signal terminal is located above the second plug low-frequency signal terminal.

3. The plug connector according to claim 2, wherein: The plug insulating body comprises a first insulating body and a second insulating body, the first plug low-frequency signal terminal is arranged on the first insulating body, and the second plug low-frequency signal terminal is arranged on the second insulating body.

4. The plug connector according to claim 3, characterized in that: There is a gap between the upper surface of the welding portion of the second plug low-frequency signal terminal and the lower surface of the rear portion of the first insulating body.

5. The plug connector according to claim 1, characterized in that: The plug high-frequency signal terminal includes two parts respectively located on both sides of all the plug low-frequency signal terminals, and the plug shielding spacer includes a first plug shielding spacer and a second plug shielding spacer, and the first plug shielding spacer and the second plug shielding spacer are mirror images of each other.

6. The plug connector according to claim 5, characterized in that: The plug high-frequency signal terminal includes a first plug high-frequency signal terminal and a second plug high-frequency signal terminal, and the first plug high-frequency signal terminal is located above the second plug high-frequency signal terminal.

7. The plug connector according to claim 1, characterized in that: The spacer body is L-shaped, including a first body portion and a second body portion, the first body portion is used to isolate the low-frequency contact portion of the plug from the high-frequency contact portion of the plug; the tongue structure is arranged on the second body portion, and the second body portion is used to shield the low-frequency connection portion of the plug from the high-frequency connection portion of the plug.

8. The plug connector according to claim 1, wherein: The plug shielding upper shell includes a limiting through hole, and the plug shielding lower shell includes a positioning protrusion. The positioning protrusion passes through the limiting through hole and is used to connect the plug shielding upper shell and the plug shielding lower shell together.

9. The plug connector according to claim 1, characterized in that: A first protruding structure is disposed on the front side of the plug shielding upper shell, and a second protruding structure is disposed on the front side of the plug shielding lower shell.

10. A radio frequency connector assembly, characterized in that: The invention comprises a socket connector and a plug connector according to any one of claims 1 to 9, wherein: The socket connector comprises a socket insulating body, a socket low-frequency signal terminal, a socket high-frequency signal terminal and a socket shielding spacer arranged on the socket insulating body, and a socket shielding shell arranged outside the insulating body, wherein the socket shielding spacer is arranged between the socket low-frequency signal terminal and the socket high-frequency signal terminal; When the plug connector is mated with the socket connector, the plug low-frequency contact portion is connected to the socket low-frequency signal terminal, the plug high-frequency contact portion is connected to the socket high-frequency signal terminal, and the plug shielding spacer is in contact with the socket shielding spacer.

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