Plug connector and radio frequency connector assembly

Abstract

A plug connector and radio frequency connector assembly, in which the plug connector (100) comprises a first insulating seat (110) having an insulating fitting portion (111) and an insulating fastening portion (112), a first signal terminal (120) and a first shield separator (130) provided on the first insulating seat, a first shield case (140) provided above the first insulating seat, a second shield case (150) provided below the first insulating seat and having a lower shield frame (151) and a lower shield case (152), and a shield reinforcement case (160) provided between the first insulating seat and the second shield case and comprising, in sequence, a leading edge shield plate (161), a connecting plate (162) and a fastening plate (163), the leading edge shield plate being connected to the insulating fitting portion, the width of the leading edge shield plate being greater than the thickness of the lower shield frame, and the fastening plate being connected to the insulating fastening portion.

Description

[Technical Field]

[0001] This application claims priority to a Chinese patent application bearing application number 202122412432.1, filed with the China Patent Office on October 8, 2021, the entire contents of which are incorporated herein by reference.

[0002] This application relates to the technical field of electrical connectors, for example, plug connectors and radio frequency connector assemblies. [Background technology]

[0003] Radio frequency connectors are usually attached to cables or devices to electrically connect transmission systems. Radio frequency signals have advantages such as a wide bandwidth and strong attenuation resistance, making them widely used in signal transmission fields. With the development of communication technology, the demand for shielding and interference resistance performance of radio frequency connectors is increasing.

[0004] A related art (Chinese application publication number: CN211062980U) discloses a male end assembly of a radio frequency connector including a first base, a shielding cover, a plurality of first signal terminals, and separators disposed between at least one group of adjacent first signal terminals. The separators define a plurality of shielding areas within the shielding cover, and signal terminals requiring high isolation are located in different shielding areas, improving the shielding performance of the male end assembly of the connector.

[0005] The drawback is that when using the male end assembly of the radio frequency connector in the related art, there still exist situations such as electric field leakage and signal interference, which severely affect the electrical performance of the radio frequency connector assembly. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Chinese Utility Model No. 211062980 Summary of the Invention

[0007] The present application provides a first insulating washer having an insulating fitting portion and an insulating holding portion provided in this order; two first signal terminals provided on the first insulating seat, each having a first contact portion, a first connection portion, and a first fixing portion provided in sequence, the first contact portion being provided on the insulating fitting portion, the first fixing portion being provided on the insulating holding portion, and configured to be fixedly connected to a coaxial cable; a first shield separator provided on the first insulator and between two adjacent first signal terminals; a first shield case provided above the first insulator; a second shield case provided below the first insulator and including a lower shield frame and a lower shield case; A plug connector is provided, which includes a shield reinforcement case that is provided between the first insulator and the second shield case, and that includes a leading edge shield plate, a connecting plate, and a retaining plate that are provided in that order, the leading edge shield plate being connected to the insulating fitting portion, the width of the leading edge shield plate being greater than the thickness of the lower shield frame, and the retaining plate being connected to the insulating retaining portion.

[0008] The present application provides a radio frequency connector assembly comprising the plug connector and the outlet connector described above, wherein: the outlet connector comprises a second insulating seat, two second signal terminals and a second shield separator provided on the second insulating seat, and a third shield case annularly provided on the outside of the second insulating seat, When the plug connector and the outlet connector are mated and connected, the outer wall of the third shielding case contacts the inner wall of the lower shielding frame and the shielding reinforcement case, the first signal terminal contacts the second signal terminal to establish electrical contact, and the first shielding separator and the second shielding separator are mated and connected to form two shielding spaces that prevent signal interference. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a structural schematic diagram of a plug connector according to an embodiment of the present application. [Figure 2] FIG. 2 is a structural exploded schematic view of the plug connector shown in FIG. [Figure 3] 2 is a structural schematic diagram of a shield reinforcement case in the plug connector shown in FIG. 1. FIG. [Figure 4] 3 is a structural schematic diagram of a first insulator, a first signal terminal, a first shield separator, and a shield reinforcement case shown in FIG. 2.

[0023] FIG. [Figure 5] 2 is a structural schematic diagram of the plug connector shown in FIG. 1 excluding the second shield case. [Figure 6] FIG. 2 is a schematic cross-sectional view of the plug connector shown in FIG. [Figure 7] FIG. 7 is an enlarged schematic view of a local area A in the schematic cross-sectional view shown in FIG. [Figure 8] 2 is a structural schematic diagram of a first shield separator in the plug connector shown in FIG. 1. FIG. [Figure 9] 1 is a structural schematic diagram of a radio frequency connector assembly according to an embodiment of the present application; [Figure 10] 10 is a cross-sectional schematic view of the radio frequency connector assembly shown in FIG. 9 in a mated state. [Figure 11] 11 is an enlarged schematic view of a local portion B in the schematic cross-sectional view shown in FIG. [Figure 12] 1 is a structural schematic diagram of a power outlet connector according to an embodiment of the present application. [Figure 13] FIG. 13 is a structural exploded view of the outlet connector shown in FIG. [Figure 14] 10 is a structural exploded schematic view of another plug connector according to an embodiment of the present application. FIG. [Figure 15] 1 is a structural schematic diagram of another radio frequency connector assembly according to an embodiment of the present application. [Explanation of symbols]

[0010] 100 plug connector, 110 first insulator, 111 insulating mating portion, 1111 recessed groove structure, 1112 tongue receiving groove, 112 insulating fastening portion, 120 first signal terminal, 121 first contact portion, 122 first connection portion, 123 first fixing portion, 130 first shield separator, 131 shield mating segment, 1311 mating protrusion, 132 reinforcing connection groove, 133 shield fastening segment, 140 first shield case, 150 second shield case, 151 lower shield frame, 1511 locking protrusion, 1512 mating tongue, 152 lower shield case, 160 Shield reinforcement case, 161, leading edge shield plate, 162, connecting plate, 163, holding plate, 1631, fixing tongue, 164, antenna structure, 200, outlet connector, 210, second insulator, 211, first through-hole structure, 212, second through-hole structure, 213, tongue insertion groove, 220 Second signal terminal, 221...second contact portion, 222...second connection portion, 223...second fixing portion, 230...second shield separator, 231...upper fixing surface, 232...mating groove, 233...lower fixing surface, 240...third shield case, 241...locking groove, 242...protective edge structure, 300...coaxial cable. DETAILED DESCRIPTION OF THE INVENTION

[0011] In order to make the above features and advantages of the present application more clear and understandable, specific embodiments of the present application will be described in detail below with reference to the drawings. In order to fully understand the present application, many specific details are set forth in the following description. However, the present application can be implemented in many other forms different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0012] The embodiments of the present application provide a plug connector to solve the problems of the male end assemblies of radio frequency connectors in the related art, such as electric field leakage, signal interference, etc. In this specification, when the plug connector and the socket connector are mated, the direction of the plug connector is referred to as the upper side or top, and the direction of the socket connector is referred to as the lower side or bottom, i.e., the side of the plug connector that can be mated with the socket connector is referred to as the lower side or bottom, and the opposite side is referred to as the upper side or top, and the direction of the insulating mating portion of the first insulating seat of the plug connector relative to the insulating holding portion is referred to as the front side or front, and the opposite direction is referred to as the rear side or rear.

[0013] As shown in FIGS. 1 to 8, in one embodiment of the present application, The plug connector 100 includes a first insulator 110, two first signal terminals 120, a first shield separator 130, a first shield case 140, a second shield case 150, and a shield reinforcement case 160. The first insulator 110 includes an insulating mating portion 111 and an insulating fastening portion 112, which are arranged in sequence. The first signal terminals 120 and the first shield separator 130 arranged between the two first signal terminals 120 are all mounted on the first insulator 110. The first shield case 140 is mounted above the first insulator 110, the second shield case 150 is mounted below the first insulator 110, and the shield reinforcement case 160 is mounted between the first insulator 110 and the second shield case 150. The two first signal terminals 120 and the first insulator 110 are fixed together by insert molding.

[0014] The first signal terminal 120 includes a first contact portion 121, a first connection portion 122, and a first fixing portion 123, which are arranged in this order. The first contact portion 121 is provided in the insulating fitting portion 111 and is exposed on the lower surface of the insulating fitting portion 111. When the first signal terminal 120 is mated with the outlet connector 200, the first contact portion 121 comes into contact with the second contact portion 221 to establish an electrical connection. The first fixing portion 123 is provided in the insulating holding portion 112 and is used to fixedly connect to the coaxial cable 300.

[0015] The second shield case 150 includes a lower shield frame 151 and a lower shield case 152. Of these, the lower shield frame 151 encloses the outside of the insulating fitting portion 111, and the lower shield case 152 covers the lower side of the insulating fastening portion 112.

[0016] The shield reinforcement case 160 comprises a leading edge shield plate 161, a connecting plate 162 and a fixing plate 163 arranged in sequence, the fixing plate 163 is connected to the insulating fixing portion 112, the leading edge shield plate 161 is connected to the insulating fitting portion 111, the width of the leading edge shield plate 161 is greater than the thickness of the lower shield frame 151, and when fitted and connected to the outlet connector 200, the third shield case 240 is connected to the leading edge shield plate 161 and the lower shield frame 151 in contact with each other.

[0017] In one embodiment, as shown in Figures 6 and 8, the first shield separator 130 comprises a shield mating segment 131 and a shield fastening segment 133, the shield mating segment 131 is disposed in the insulating mating portion 111, the shield fastening segment 133 is disposed in the insulating fastening portion 112, the upper surface of the shield fastening segment 133 contacts the first shield case 140, and the lower surface of the shield fastening segment 133 contacts the shield reinforcement case 160, thereby effectively preventing radio frequency signals from interfering with each other during transmission from two adjacent coaxial cables 300 to the corresponding first signal terminals 120, resulting in signal interference.

[0018] In one embodiment, a groove structure 1111 is provided on the rear side of the insulating fitting portion 111, a reinforcing connecting groove 132 is provided on the first shield separator 130, and the leading edge shield plate 161 is mated and connected with the groove structure 1111 and the reinforcing connecting groove 132. As shown in FIGS. 4 to 8 , the insulating fitting portion 111 is provided with the groove structure 1111 having the same thickness as the leading edge shield plate 161, and the reinforcing connecting groove 132 is provided between the shield fitting segment 131 and the shield holding segment 133 of the first shield separator 130. After the first shield separator 130 is attached to the first insulating seat 110, the groove structure 1111 and the reinforcing connecting groove 132 together form a groove that matches the size of the leading edge shield plate 161, and after the leading edge shield plate 161 is attached, the lower surface of the leading edge shield plate 161 is flush with the lower surface of the insulating fitting portion 111.

[0019] 3 and 4, the shielding reinforcement case 160 further includes antennae structures 164 attached to the rear sides of the side walls of the insulating fitting 111. The antennae structures 164 allow the shielding reinforcement case 160 to be attached to the first insulating seat 110 and are less likely to come off the first insulating seat 110 during production, which is beneficial to improving production efficiency. In one embodiment, the antennae structures 164 are symmetrically provided on both sides of the connecting plate 162, i.e., the lower sides of both side walls of the connecting plate 162 extend forward, forming antennae structures 164 that match the shape of the rear sides of the side walls of the insulating fitting 111, resulting in a simple structure and easy processing and production.

[0020] 14 and 15, in one embodiment, a pair of opposing side walls of the lower shield frame 151 are provided on the inside thereof with mating tongues 1512 to reinforce the mating strength between the second shield case 150 and the mating connector. For example, the upper ends of the pair of opposing side walls of the lower shield frame 151 extend downward along the inward direction and bend to form the mating tongues 1512, and the insulating mating part 111 of the first insulator 110 is provided with a tongue receiving groove 1112 to receive the mating tongue 1512. The second insulator 210 of the outlet connector 200 is provided with a tongue insertion groove 213. When the radio frequency connector assembly is in use, the plug connector 100 and the outlet connector 200 are inserted together, and at this time the mating tongue 1512 fits into the tongue insertion groove 213, and the third shield case 240 is positioned between the mating tongue 1512 and the lower shield frame 151, reinforcing the mating strength between the plug connector 100 and the outlet connector 200 and improving the flexible insertion and removal capability of the radio frequency connector assembly, thereby making it easier for the operator to insert and remove the plug connector.

[0021] In one embodiment, from the lower end of the mating tongue 1512 to its upper end, the distance between the mating tongue 1512 and the plane of the side wall of the lower shield frame 151 on which the mating tongue 1512 is provided decreases and then increases. At the lower end of the mating tongue 1512, the distance between the mating tongue 1512 and the corresponding side wall is large, which serves as an insertion guide and makes it easy to connect and insert the plug connector and the socket connector together. As the mating tongue 1512 approaches the middle, the distance between the mating tongue 1512 and the corresponding side wall is smallest, which makes it clear to the operator when inserting and removing, improves the operating experience, and allows the operator to clearly and distinctly grasp the degree of insertion of the plug connector and the socket connector.

[0022] In one embodiment, the holding plate 163 is provided with a fixing tongue 1631 for fixing the shielding reinforcement case 160. During the actual production process of the plug connector, the first shielding separator 130, the first shielding case 140, the second shielding case 150 and the shielding reinforcement case 160 are fixed together by a soldering process, and the provision of the fixing tongue 1631 on the holding plate 163 can effectively increase the welding area and improve the stability of the welding structure.

[0023] In one embodiment, the upper side of the insulating holding portion 112 and the upper side of the insulating mating portion 111 are flush with each other, and the thickness of the insulating holding portion 112 is greater than that of the insulating mating portion 111. As shown in Figures 2 and 4, the first insulating seat 110 has a stepped structure, and the thickness of the insulating mating portion 111 is small, so that the thickness of the corresponding part of the entire radio frequency connector assembly after mating with the power socket connector is also small, which is advantageous to meet the current development needs of miniaturization and micro-ization of products.

[0024] In one embodiment, referring to FIG. 6, a filled solder paste, indicated at 170, is used to fill the gap between the first shield separator 130 and the first shield case 140 to form a closed, complete shield.

[0025] As shown in Figures 9 to 13, this embodiment provides a radio frequency connector assembly comprising any one of the above-mentioned plug connectors 100 and a socket connector 200, wherein the socket connector 200 comprises a second insulating seat 210, two second signal terminals 220 provided on the second insulating seat 210, a second shield separator 230 provided on the second insulating seat 210 and positioned between the two second signal terminals 220, and a third shield case 240 annularly arranged on the outside of the second insulating seat 210.

[0026] When the plug connector 100 and the outlet connector 200 are mated and connected, as shown in Figures 10 and 11, the outer wall of the third shield case 240 contacts the inner wall of the lower shield frame 151 and the shield reinforcement case 160, thereby effectively preventing radio frequency signals from leaking and causing signal interference, the first signal terminal 120 contacts the second signal terminal 220, thereby achieving electrical contact to transmit power and / or signals, and the first shield separator 130 and the second shield separator 230 are mated and connected to form two shielded spaces that prevent signal interference from occurring.

[0027] In one embodiment, the first shield separator 130 is provided with a mating protrusion 1311, and the second shield separator 230 is provided with a mating groove 232 that matches the mating protrusion 1311. When the plug connector 100 and the outlet connector 200 are mated and connected, the mating protrusion 1311 and the mating groove 232 fit together to form two shielded spaces that prevent signal interference.

[0028] 12 and 13, the second insulating seat 210 has a first through-hole structure 211 and a second through-hole structure 212. The second signal terminal 220 has a second contact portion 221, a second connecting portion 222, and a second fixing portion 223. The second shield separator 230 has an upper fixing surface 231 flush with the upper surface of the second insulating seat 210 and a lower fixing surface 233 flush with the lower surface of the second insulating seat 210. The upper fixing surface 231 has a mating groove 232 extending downward and matching the size of the mating protrusion 1311. The second contact portion 221 is provided in the first through-hole structure 211, and the mating groove 232 is provided in the second through-hole structure 212.

[0029] In one embodiment, a locking protrusion 1511 is provided on the inner wall of the lower shield frame 151, and a locking groove 241 is provided on the outer wall of the third shield case 240. When the plug connector 100 and the outlet connector 200 are mated and connected, the locking protrusion 1511 and the locking groove 241 are mated and connected, thereby reinforcing the insertion strength between the plug connector 100 and the outlet connector 200 and improving the stability of signal transmission of the radio frequency connector assembly.

[0030] In one embodiment, a protective edge structure 242 is provided on the outer edge of the lower bottom plate of the third shielding case 240 .

[0031] In one embodiment, the first contact portion 121 has a two-layer laminated structure, in which the thickness of the first contact portion 121 is twice the thickness of the other regions. Compared to a general conventional signal terminal with a uniform thickness, the first contact portion 121 has twice the thickness, so that its width can be reduced to about half that of a general signal terminal to ensure the same impedance requirement of the transmission path (usually 50 ohms). As a result, the distance between the two first signal terminals 120 is greater, and the spacing distance is further, thereby providing a better isolation effect to prevent signal interference. Furthermore, because first contact portion 121 has a double-layered structure, when it is connected to second signal terminal 220 of the outlet connector, the thickness of first contact portion 121 increases, applying a certain amount of pressure to the connection surface between second signal terminal 220 and first contact portion 121, thereby reinforcing contact strength. The double-layered structure is formed by laminating, i.e., there is no gap between the two branch separators that form the double-layered structure, so no capacitance effect is formed and high-frequency resonance is prevented. Therefore, by providing first contact portion 121 with a double-layered structure, not only can the shielding effect between the two plug signal terminals be improved, but high-frequency resonance can also be prevented, and the contact strength and connection stability between the plug signal terminal and the outlet signal terminal of the outlet connector can be improved.

[0032] In order to solve the problems of electric field leakage, signal interference, etc. that exist in the male end assemblies of radio frequency connectors in the related art, the plug connector in this application is provided with a first shield separator and a shield reinforcement case. When mated and connected to a socket connector, the first shield separator and the second shield separator in the socket connector mate to form two shield spaces that prevent signals from interfering with each other. The shield reinforcement case and the second shield case are connected to the third shield case of the socket connector, thereby achieving a completely closed shield, reducing radiation related to electromagnetic interference (EMI) and radio frequency interference, preventing radio frequency leakage, and minimizing sensitivity to external magnetic fields, resulting in excellent shielding performance, interference resistance, and electrical performance.

[0033] The insert molding is a molding method in which a prepared insert made of a different material is placed in a mold, resin is then injected, and the molten material and the insert are joined and solidified to create an integrated product.

[0034] The technical features of the above embodiments can be combined in any way. For the sake of simplicity, not all possible combinations of the technical features in the above embodiments are described, but combinations of these technical features should be considered within the scope of the present specification unless they are inconsistent.

[0035] The above examples merely illustrate the embodiments of the present application, and although the descriptions are more specific and detailed, they should not be construed as limiting the scope of the claims. It should be noted that those skilled in the art can make further modifications and improvements without departing from the spirit of the present invention, and these fall within the scope of protection of the present application. Therefore, the scope of protection of the present application should be governed by the scope of the attached claims.

Claims

1. a first insulating seat (110) having an insulating fitting portion (111) and an insulating holding portion (112) provided in this order; two first signal terminals (120) provided on the first insulating seat (110), each having a first contact portion (121), a first connecting portion (122), and a first fixing portion (123) provided in sequence, the first contact portion (121) being provided on the insulating fitting portion (111), and the first fixing portion (123) being provided on the insulating holding portion (112), configured to be fixedly connected to a coaxial cable; a first shield separator (130) provided on the first insulator (110) and between two adjacent first signal terminals (120); a first shield case (140) provided on the upper side of the first insulator (110); a second shield case (150) provided below the first insulator (110) and including a lower shield frame (151) and a lower shield case (152); a shield reinforcement case (160) provided between the first insulator (110) and the second shield case (150), and comprising a leading edge shield plate (161), a connecting plate (162), and a holding plate (163) provided in this order, the leading edge shield plate (161) being connected to the insulating fitting portion (111), the leading edge shield plate (161) having a width greater than the thickness of the lower shield frame (151), and the holding plate (163) being connected to the insulating holding portion (112); The shield-holding segment (133) of the first shield separator (130) has an upper surface that contacts the first shield case (140) and a lower surface that contacts the shield reinforcing case (160). Plug connector.

2. The first shield separator (130) further comprises: A shield mating segment (131) is provided in the insulating mating portion (111), The shield fastening segment (133) is provided on the insulating fastening portion (112). The plug connector according to claim 1 .

3. The rear side of the insulating fitting portion (111) is provided with a groove structure (1111), the first shield separator (130) is provided with a reinforcing connection groove (132), and the leading edge shield plate (161) is fitted and connected with the groove structure (1111) and the reinforcing connection groove (132). The plug connector according to claim 1 .

4. The shielding reinforcement case (160) further includes a tentacle structure (164) attached to the rear side of the side wall of the insulating fitting portion (111). The plug connector according to claim 1 .

5. A pair of opposing side walls of the lower shield frame (151) are provided on the inside with mating tongues (1512) configured to reinforce the mating strength between the second shield case (150) and the mating connector. The plug connector according to claim 1 .

6. The fixing plate (163) is provided with a fixing tongue (1631) configured to fix the shield reinforcement case (160). The plug connector according to claim 1 .

7. The upper side of the insulating holding portion (112) and the upper side of the insulating fitting portion (111) are on the same surface, and the thickness of the insulating holding portion (112) is greater than the thickness of the insulating fitting portion (111). The plug connector according to claim 1 .

8. A plug connector (100) according to any one of claims 1 to 7; a power outlet connector (200) including a second insulator (210), two second signal terminals (220) and a second shield separator (230) provided on the second insulator (210), and a third shield case (240) annularly provided on the outside of the second insulator (210); When the plug connector (100) and the outlet connector (200) are mated and connected, the outer wall of the third shield case (240) contacts the inner wall of the lower shield frame (151) and the shield reinforcement case (160), the first signal terminal (120) contacts the second signal terminal (220) to achieve electrical contact, and the first shield separator (130) and the second shield separator (230) are mated and connected to form two shield spaces that prevent signal interference. Radio frequency connector assembly.

9. The first shield separator (130) is provided with a mating protrusion (1311), and the second shield separator (230) is provided with a mating groove (232) that matches the mating protrusion (1311).

9. The radio frequency connector assembly of claim 8.

10. The inner wall of the lower shield frame (151) is provided with a locking protrusion (1511), and the outer wall of the third shield case (240) is provided with a locking groove (241), and when the plug connector (100) and the outlet connector (200) are mated and connected, the locking protrusion (1511) and the locking groove (241) are mated and connected.

9. The radio frequency connector assembly of claim 8.

Images