Connector

Abstract

The present invention belongs to the technical field of connection devices. Provided is a connector. The connector comprises terminal modules, a shielding mesh plate and shielding cylinders, wherein the terminal modules each comprise an insulator, and shielding sheets and pairs of contact members fixed to the insulator, the shielding sheets are each provided with a pressing portion configured to press against and come into contact with a cable shielding layer, and plug-in ends at the front end of each pair of contact members extend to the front sides of the shielding sheets; the shielding mesh plate is provided with grounding cavities that correspond to the pairs of contact members on a one-to-one basis for allowing the plug-in ends of the contact members to pass therethrough; the shielding cylinders are correspondingly sleeved outside the plug-in ends of the pairs of contact members on a one-to-one basis; and the shielding cylinders and the shielding sheets are respectively located on two sides of the shielding mesh plate and each come into contact with the shielding mesh plate for conduction. The connector of the present invention is convenient to assemble, and the shielding mesh plate and the shielding cylinders are independent components and do not require temporary assembly by welding to form a new component structure, such that the assembly process can be simplified, the assembly efficiency can be improved, a welding procedure is avoided during the whole process, the process is simple, and the mass productivity is high.

Description

A connector TECHNICAL FIELD

[0001] The present application relates to a connector, belonging to the technical field of connecting devices. BACKGROUND

[0002] High-speed connectors are commonly used in large communication equipment, ultra-high performance servers and giant computers, industrial computers, high-end storage devices. High-speed connectors usually include a shell and a cable assembly, for example, a high-speed cable assembly disclosed in Chinese patent application publication No. CN116505314A, which includes a middle shell and a plurality of differential assemblies. The differential assembly includes a cable, a grounding clamp, a contact, an insulating sleeve, a shielding shell and a shielding cover. The grounding clamp is fixed on the end of the cable and is in conductive communication with the cable shielding layer. The contact includes an injection molded fixed block and a contact terminal fixed on the fixed block, and the contact terminal is welded and fixed with the cable conductor. The insulating sleeve is sleeved and fixed outside the contact, and then embedded in the shielding shell together. The shielding shell is U-shaped and can surround three sides of the contact and the insulating sleeve. The shielding cover is buckled on the opening side of the shielding shell and is fixed by laser welding. The connecting tongue on the shielding cover abuts against and is welded with the grounding clamp, and the clamping jaws on the shielding cover and the shielding shell are tightly fixed with the grounding clamp, so that the shielding cover and the shielding shell are in conductive communication with the grounding clamp. During assembly, each differential assembly is first assembled into the middle shell and locked, and then the middle shell is assembled into the outer shell to form the connector.

[0003] The above-mentioned differential assembly needs to fix a grounding clamp outside the shielding layer of each cable during manufacturing, and then each contact needs to be sleeved with an insulating sleeve, and then placed into the shielding shell, buckled with the shielding cover, and welded and fixed with the shielding cover, shielding shell and grounding clamp. Finally, the clamping jaws of the shielding cover and the shielding shell are fixed with the grounding clamp. Since the number of contacts and cables is large, the assembly steps of each cable are complicated. Such assembly one by one has low overall assembly efficiency, and the assembly operation is extremely inconvenient due to the small size of the parts.

[0004] To this end, Chinese patent application publication No. CN117080809A discloses a cable shielding grounding structure and a high-speed cable connector, which actually discloses a terminal module. The terminal module includes a shell (i.e. an insulator) and a plurality of pairs of contacts fixed on the insulator. Each pair of contacts constitutes a differential pair, and each differential pair is connected at the rear end with a cable. The insulator is provided with a plurality of mounting grooves, and each cable is correspondingly mounted in the mounting groove and fixed on the insulator by a pressing strip. The terminal module further includes an upper shielding sheet and a lower shielding sheet respectively arranged on the upper and lower sides of the shell. The upper and lower shielding sheets are respectively provided with pressing structures for pressing the shielding layer of the cable, so as to realize grounding communication between the shielding sheets and the shielding layer of each cable.

[0005] The shielding pieces can simultaneously contact and conduct with the shielding layers of the cables, without the need to install a grounding hoop on each cable, and without the need to provide a separate shielding shell and shielding cover outside each contact piece, thereby eliminating the separate installation operation and the fixing operation of the shielding shell and the shielding cover and the grounding hoop, and simplifying the assembly steps. SUMMARY

[0006] The present application aims to provide a connector to solve the problem of the existing connector that the shielding piece of each terminal module directly covers the plug-in end of the contact piece and needs to install multiple spacers between the two shielding pieces to ensure the full shielding effect of each pair of contact pieces, resulting in a complicated assembly process and low assembly efficiency.

[0007] To achieve the above-mentioned purpose, the connector in the present application adopts the following technical solution: a connector comprising a terminal module, a shielding mesh plate and a shielding cylinder, the terminal module comprising an insulator, a shielding piece and a pair of contact pieces fixed on the insulator, the shielding piece being provided with a pressing part for top pressing contact with the shielding layer of a cable, the plug-in end of the front end of each pair of contact pieces extending to the front side of the shielding piece, the shielding mesh plate being provided with a grounding cavity corresponding to each pair of contact pieces for the plug-in end of the contact piece to pass through, the shielding cylinder being provided outside the plug-in end of each pair of contact pieces, and each shielding cylinder and each shielding piece being located on both sides of the shielding mesh plate and being in contact and conduction with the shielding mesh plate.

[0008] The beneficial effects of the above technical solutions are that the application belongs to an opening invention, and a new connector structure is provided, which comprises a terminal module, a shielding net plate and a shielding cylinder, the terminal module is provided with a plurality of terminal modules and each comprises an insulator and a shielding sheet and a plurality of pairs of contact pieces fixed on the insulator, the shielding sheet is provided with a pressing part for top pressing contact with a cable shielding layer, so that the ground conduction of the cable shielding layer in one terminal module can be realized after the shielding sheet is installed; meanwhile, the plug-in end of the front end of each pair of contact pieces extends to the front side of the shielding sheet, that is, the shielding sheet in the application does not form full coverage of the contact pieces, and the plug-in end of the contact piece is exposed outside; meanwhile, the shielding net plate is provided with a grounding cavity corresponding to each pair of contact pieces for the plug-in end of the contact piece to pass through, the shielding cylinder is provided with a plurality of shielding cylinders corresponding to each pair of contact pieces and is sleeved outside the plug-in end of each pair of contact pieces, and the shielding cylinder and the shielding sheet are located on both sides of the shielding net plate and are in contact with the shielding net plate, so that the shielding cylinder can independently shield the plug-in end of each pair of contact pieces, and the shielding cylinder and the shielding sheet are in contact through the switching of the shielding net plate, so that full shielding of the contact piece and ground conduction of each terminal module are realized, and the shielding effect is ensured.

[0009] When the connector is assembled, the shielding sheet of each terminal module is only required to be in contact with the shielding net plate, the shielding cylinder is sleeved outside the plug-in end of each pair of contact pieces and is in contact with the shielding net plate, the shielding net plate and the shielding cylinder are independent components, and a plurality of spacers do not need to be fixed between the two shielding sheets of each terminal module to form a shielding cylinder structure as in the prior art, that is, a new component structure does not need to be formed by temporary assembly, the installation is more convenient, the assembly process can be simplified, and the assembly efficiency is improved.

[0010] Further, the front end of each shielding sheet is provided with a grounding sheet corresponding to the position of the grounding cavity, which is inserted into the grounding cavity and in contact with the inner wall of the grounding cavity.

[0011] Further, the grounding sheet corresponding to one grounding cavity on the shielding sheet is provided with two grounding sheets, and the two grounding sheets are arranged at intervals, the front end of each shielding sheet is further provided with a grounding claw corresponding to the position of the grounding cavity, the grounding claw is located between the two grounding sheets, and the grounding claw is in elastic top pressing contact with the inner wall of the corresponding shielding cylinder.

[0012] Further, the grounding sheet is provided with a convex part, and the grounding sheet is in interference fit with the inner wall of the grounding cavity through the convex part.

[0013] Further, each shielding cylinder comprises an insertion plate for insertion into the corresponding grounding cavity and in contact with the inner wall of the grounding cavity, and the insertion plate and the grounding sheet in the same grounding cavity are arranged in front of and behind each other.

[0014] Further, the two insertion plates on one shielding cylinder are arranged in an up-down interval and inserted into the same grounding cavity, and the two insertion plates are respectively provided with a protruding spike to be in interference fit with the inner wall of the grounding cavity.

[0015] Further, the two insertion plates on one shielding cylinder are arranged in an up-down interval and inserted into the same grounding cavity, and the two insertion plates are respectively in contact with the upper and lower inner walls of the grounding cavity.

[0016] Further, the shielding net plate is provided with a grounding groove beside the grounding cavity, and each shielding cylinder further comprises an insertion pin inserted into the grounding groove and in interference fit with the inner wall of the grounding groove.

[0017] Further, the two insertion plates on one shielding cylinder are arranged in an up-down interval and inserted into the same grounding cavity, and the shielding net plate is respectively provided with a grounding groove on the left and right sides of one grounding cavity, and the two insertion pins on one shielding cylinder are arranged in a left-right interval and respectively inserted into the corresponding grounding groove.

[0018] Further, each shielding cylinder comprises an insertion plate inserted into the corresponding grounding cavity and in contact with the inner wall of the grounding cavity.

[0019] Further, the two insertion plates on one shielding cylinder are arranged in an up-down interval and inserted into the same grounding cavity, and the two insertion plates are respectively provided with a protruding spike to be in interference fit with the inner wall of the grounding cavity.

[0020] Further, the shielding net plate is provided with a grounding groove beside the grounding cavity, and each shielding cylinder further comprises an insertion pin inserted into the grounding groove and in interference fit with the inner wall of the grounding groove.

[0021] Further, the two insertion plates on one shielding cylinder are arranged in an up-down interval and inserted into the same grounding cavity, and the shielding net plate is respectively provided with a grounding groove on the left and right sides of one grounding cavity, and the two insertion pins on one shielding cylinder are arranged in a left-right interval and respectively inserted into the corresponding grounding groove.

[0022] Further, the shielding net plate is provided with a grounding groove beside the grounding cavity, and each shielding cylinder further comprises an insertion pin inserted into the grounding groove and in interference fit with the inner wall of the grounding groove.

[0023] Further, the shielding net plate is provided with a grounding groove beside the grounding cavity, and each shielding cylinder further comprises an insertion pin inserted into the grounding groove and in interference fit with the inner wall of the grounding groove.

[0024] Further, the connector further comprises an injection-molded outer housing, the outer housing comprising mounting cavities for mounting the terminal modules, the mounting cavities having a mounting opening at a rear end thereof, the mounting cavities being provided with end plates at a front end thereof, the shielding mesh plates being arranged in the mounting cavities and abutting against a rear end surface of the end plates, the end plates being integrally provided with plastic hole posts corresponding to the shielding cylinders one by one at a front end surface thereof, inner holes of the plastic hole posts being used for accommodating plug-in ends of the contact pieces, the shielding cylinders being sleeved outside the corresponding plastic hole posts, the end plates being provided with through holes for the shielding cylinders to pass through the shielding mesh plates.

[0025] Further, the shielding cylinders and the plastic hole posts are respectively provided with avoiding holes corresponding thereto for avoiding the plug-in ends of the contact pieces when the plug-in ends are deformed. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 is a perspective view of a connector according to an embodiment of the present application; Fig. 2 is an exploded view of the connector according to the embodiment of the present application; Fig. 3 is a view of the connector according to the embodiment of the present application with the outer housing removed; Fig. 4 is a top view of the structure shown in Fig. 3; Fig. 5 is a sectional view along A-A in Fig. 4; Fig. 6 is a sectional view along B-B in Fig. 4; Fig. 7 is an enlarged view of C in Fig. 6; Fig. 8 is a perspective view of the outer housing of the connector according to the embodiment of the present application; Fig. 9 is a top view of the outer housing of the connector according to the embodiment of the present application; Fig. 10 is a bottom view of the outer housing of the connector according to the embodiment of the present application; Fig. 11 is a perspective view of the shielding cylinder of the connector according to the embodiment of the present application; Fig. 12 is a front view of the shielding cylinder of the connector according to the embodiment of the present application; Fig. 13 is a side view of the shielding cylinder of the connector according to the embodiment of the present application; Fig. 14 is a top view of the shielding mesh plate of the connector according to the embodiment of the present application; Fig. 15 is a perspective view of the shielding mesh plate of the connector according to the embodiment of the present application; Fig. 16 is a top view of the wire bundling piece of the connector according to the embodiment of the present application; Fig. 17 is an exploded view of the terminal module of the connector according to the embodiment of the present application; Fig. 18 is a perspective view of the shielding piece of the connector according to the embodiment of the present application; Fig. 19 is a view of the assembly process of the terminal module of the connector according to the embodiment of the present application (the cable is just inserted into the wire bundling groove of the insulator); Fig. 20 is a view of the assembly process of the terminal module of the connector according to the embodiment of the present application (the cable is welded and fixed with the contact piece); Fig. 21 is a view of the assembly process of the terminal module of the connector according to the embodiment of the present application (UV glue is coated outside the welding spot, and a filling body is arranged in the gap of the wire bundling groove); Fig. 22 is a view of the assembly process of the terminal module of the connector according to the embodiment of the present application (the shielding piece is riveted and fixed); Fig. 23 is a perspective view of a terminal module of a connector according to an embodiment of the present application; Fig. 24 is a perspective view of a shielding piece of a connector according to an embodiment of the present application; Fig. 25 is a sectional view of the installation of a shielding piece, a shielding mesh plate and a shielding cylinder of a connector according to an embodiment of the present application; Fig. 26 is a sectional view of the installation of a terminal module, a shielding mesh plate and a shielding cylinder of a connector according to an embodiment of the present application.

[0027] Fig. 1, the outer shell; 11, mounting cavity; 12, end plate; 121, first perforation; 122, second perforation; 13, plastic hole column; 131, first avoiding hole; 14, side plate; 15, positioning hole; 16, guide groove; 2, insulator; 21, wire slot; 22, rivet column; 23, fixed column; 24, positioning groove; 25, guide column; 3, contact piece; 4, cable; 41, shielding layer; 42, signal line; 5, shielding sheet; 51, clamping plate; 52, grounding sheet; 53, grounding spring claw; 54, riveting hole; 6, shielding net plate; 61, grounding cavity; 611, first contact wall; 612, second contact wall; 613, convex step; 62, grounding groove; 7, shielding cylinder; 71, plug-in plate; 72, plug-in pin; 73, second avoiding hole; 74, riveting line; 8, wire clamping sheet; 81, locking arm; 91, UV glue; 92, filling body; 10, welding point. DETAILED DESCRIPTION

[0028] The features and performances of the present application are further described in detail below in combination with embodiments.

[0029] In view of the technical problems in the prior art, the basic technical concept of the present application is to provide a brand-new connector structure, which comprises a terminal module, a shielding net plate and a shielding cylinder, the plug-in end of the front end of each pair of contact pieces in the terminal module extends to the front side of the shielding sheet, the shielding net plate is provided with a grounding cavity corresponding to each pair of contact pieces for the plug-in end of the contact piece to pass through, the shielding cylinder is correspondingly sleeved outside the plug-in end of each pair of contact pieces, and each shielding cylinder and each shielding sheet are located on both sides of the shielding net plate and are in contact with the shielding net plate, the shielding cylinder can independently shield the plug-in end of each pair of contact pieces, and each shielding cylinder and each shielding sheet are in contact through the switching of the shielding net plate, thereby realizing the full shielding of the contact pieces and the common ground contact of each terminal module, and ensuring the shielding effect.

[0030] Embodiment 1 of the connector in the present application: as shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 4, the connector comprises an outer shell 1, a terminal module, a shielding net plate 6, a shielding cylinder 7 and a wire clamping sheet 8. The terminal module is provided in plurality, and the end of the connector defined as the end of the connector adapted to be connected to the connector is forward, so that the arrangement direction of the plurality of terminal modules is upward and downward, the terminal module is the main component of the connector and is used for transmitting differential signals.

[0031] As shown in FIG. 17, the terminal module comprises an insulator 2, contact pieces 3, cables 4 and shielding sheets 5. The insulator 2 is formed by injection molding, and the contact pieces 3 are arranged in pairs. A plurality of pairs of contact pieces 3 are embedded and fixed on one insulator 2, and each pair of contact pieces 3 is arranged at left and right intervals. In this embodiment, there are four pairs of contact pieces 3. The front end of the contact piece 3 is a plug-in end for plugging with an adapter connector, the rear end is a connecting end for connecting with the cable 4, and the middle part is a fixed segment fixed with the insulator 2. As shown in FIGS. 17 and 19, the front end of the insulator 2 is formed with a fixed column 23 wrapped around the outside of the fixed segment of each pair of contact pieces 3, and the left and right sides of the insulator 2 are respectively formed with guide columns 25 extending forward and backward, and the guide columns 25 are provided with positioning grooves 24. The rear end of each pair of contact pieces 3 is connected with one cable 4, and the insulator 2 is provided with a wire bundling groove 21 corresponding to each cable 4 to fix the cable 4. The cable 4 comprises a shielding layer 41 and two signal lines 42, and the two signal lines 42 are fixedly connected with the rear end of a pair of contact pieces 3 to transmit differential signals.

[0032] The shielding sheet 5 in one terminal module is provided with two shielding sheets 5 arranged symmetrically on the upper and lower sides of the insulator 2. In this embodiment, the plug-in end of the front end of each pair of contact pieces 3 extends to the front side of the shielding sheet 5, that is, the shielding sheet 5 does not cover the plug-in end of the contact piece 3. The shielding sheet 5 is provided with a pressing part for top pressing contact with the shielding layer 41 of the cable 4. As shown in FIG. 18, the shielding sheet 5 is integrally bent and formed with a clamping plate 51, the clamping plate 51 constitutes the pressing part, and the clamping plate 51 is U-shaped. The clamping plate 51 on the upper shielding sheet 5 extends downward, and the clamping plate 51 on the lower shielding sheet 5 extends upward. The upper and lower clamping plates 51 are clamped and connected outside the shielding layer 41 of the cable 4, and the common ground conduction of the shielding layers of each cable in one terminal module is realized through the extrusion contact with the shielding layer 41.

[0033] The shielding sheet 5 is further provided with a plurality of rivet holes 54, and the upper and lower surfaces of the insulator 2 are respectively provided with corresponding rivet columns 22. When the shielding sheet 5 is installed, the rivet column 22 passes through the rivet hole 54, and then the fixing between the shielding sheet 5 and the insulator 2 is realized through hot melting riveting. The assembly process of the terminal module is as follows: as shown in FIG. 19, first, the cable 4 is placed in the wire bundling groove 21 of the insulator 2; as shown in FIG. 20, the two signal lines 42 of the cable 4 are respectively welded and fixed with the rear end of a pair of contact pieces 3 to form a welding point 10; as shown in FIG. 21, UV glue 91 is coated outside the welding point 10 to ensure the connection effect, and a filling body 92 is arranged in the gap between the wire bundling groove 21 and the cable 4 to limit the cable 4; as shown in FIG. 22, finally, the shielding sheet 5 is installed, the rivet column 22 passes through the rivet hole 54, and the shielding sheet 5 is fixed through hot melting riveting, so that the upper and lower clamping plates 51 tightly clamp the shielding layer 41 of the corresponding cable 4.

[0034] The shielding sheet 5 in the terminal module directly contacts with the cable shielding layer, and the grounding hoop is omitted. The terminal module can be connected with multiple cable shielding layers during one installation, and the hot melt riveting method is adopted, so that the installation is convenient. After the terminal module is assembled, each terminal module is installed in the outer shell 1, as shown in FIGS. 8, 9 and 10. The outer shell 1 is formed by injection molding, and includes a mounting cavity 11 for installing each terminal module. The rear end of the mounting cavity 11 has a mounting opening, and the front end is provided with an end plate 12. The left and right inner walls of the mounting cavity 11 are respectively provided with guide grooves 16. The guide grooves 16 are used for cooperating with the guide columns 25 on the insulating body 2 when each terminal module is installed, so as to guide the terminal module.

[0035] The bundle wire sheet 8 is provided with two, as shown in FIG. 16. The bundle wire sheet 8 is provided with multiple locking arms 81. As shown in FIG. 8, the left and right side walls of the mounting cavity 11 are respectively provided with multiple positioning holes 15. Each locking arm 81 on each bundle wire sheet 8 respectively penetrates through the corresponding positioning hole 15 and extends into the mounting cavity 11. The end of the locking arm 81 is inserted into the positioning groove 24 on the guide column 25, so as to position each terminal module. At the same time, the locking arm 81 is in interference fit with the positioning hole 15, so as to ensure the fixing effect.

[0036] As shown in FIGS. 8 and 9, the left and right sides of the front end face of the end plate 12 are respectively formed with side plates 14. The side plates 14 are provided with guide structures, which are used for guiding the plug-in connector when the plug-in connector is plugged. The end plate 12 is integrally formed with multiple plastic hole columns 13 on the front end face. The plastic hole column 13 corresponds to each contact piece 3. The inner hole of the plastic hole column 13 is used for accommodating the plug-in end of the contact piece 3. The plastic hole column 13 is provided with a first avoiding hole 131 for avoiding the plug-in end when the plug-in end is deformed.

[0037] The shielding net plate 6 is arranged in the mounting cavity 11 and abuts against the rear end face of the end plate 12, that is, the shielding net plate 6 is clamped between each terminal module and the end plate 12, as shown in FIG. 10. The shape of the mounting cavity 11 is matched with the shape of the shielding net plate 6, which is used for guiding the shielding net plate 6 when the shielding net plate 6 is installed, and limiting the shielding net plate 6 after installation. As shown in FIGS. 14 and 15, the shielding net plate 6 is provided with a grounding cavity 61 corresponding to each contact piece, so that the plug-in end of the contact piece penetrates through the grounding cavity 61 and extends into the plastic hole column 13. As shown in FIG. 3, the shielding cylinder 7 is provided with multiple and corresponding sleeves arranged outside each contact piece 3, so as to form full shielding for the plug-in end. Specifically, the shielding cylinder 7 is sleeved outside the plastic hole column 13, that is, the number of the plastic hole column 13 is the same as that of the shielding cylinder 7. The plug-in end of the contact piece 3 and the shielding cylinder 7 are separated by the plastic hole column 13, so as to avoid the contact between the plug-in end and the shielding cylinder 7, which affects the signal transmission.

[0038] The shielding sheet 5 on each shielding cylinder 7 and each terminal module is located on the front and back sides of the shielding mesh plate 6 and is in contact with the shielding mesh plate 6, as shown in Figs. 5 and 18. The front end of each shielding sheet 5 is provided with a grounding sheet 52 for insertion into the grounding cavity 61 and in contact with the inner wall of the grounding cavity 61. The contact is achieved by insertion, which is simple in structure and convenient to install. The grounding sheet 52 is provided with a protrusion, and the grounding sheet 52 is in interference fit with the inner wall of the grounding cavity 61 through the protrusion, which ensures close contact. In this embodiment, as shown in Figs. 6 and 7, the grounding sheet 52 on the shielding sheet 5 corresponding to one grounding cavity 61 is provided with two grounding sheets 52, which are arranged left and right. The front end of each shielding sheet 5 is also provided with a grounding spring claw 53 at the position corresponding to the grounding cavity 61. The grounding spring claw 53 is provided with two grounding spring claws 53, which are located between the left and right grounding sheets 52. The grounding spring claw 53 is used to elastically press and contact the inner wall of the corresponding shielding cylinder 7, thereby achieving direct contact between the shielding sheet 5 and the shielding cylinder 7 and improving the common ground contact effect. The position of the grounding spring claw 53 corresponds to the fixed column 23. In order to facilitate the deformation of the grounding spring claw 53, a corresponding avoidance slot is provided on the fixed column 23.

[0039] As shown in Figs. 11, 12 and 13, each shielding cylinder 7 includes an insertion plate 71 for insertion into the corresponding grounding cavity 61 and in contact with the inner wall of the grounding cavity 61. The contact is achieved by insertion, which is simple in structure and convenient to install. As shown in Figs. 6 and 7, the insertion plate 71 on one shielding cylinder 7 is provided with two insertion plates 71, which are arranged up and down and inserted into the same grounding cavity 61. The two insertion plates 71 are respectively provided with protrusions to achieve interference fit with the inner wall of the grounding cavity 61, which ensures close contact and also fixes the shielding cylinder 7.

[0040] As shown in Figs. 5, 6 and 7, the insertion plate 71 and the grounding sheet 52 in the same grounding cavity 61 are arranged front and back. The insertion plate 71 is located on the front side of the grounding sheet 52. The two insertion plates 71 are in contact with the upper and lower inner walls of the grounding cavity 61, which are the first contact walls 611 in Figs. 14 and 15. The grounding sheet 52 in one grounding cavity 61 is in contact with the left and right inner walls of the grounding cavity 61, which are the second contact walls 612 in Figs. 14 and 15. Since one shielding sheet 5 is provided with two grounding sheets 52, the left grounding sheet 52 is in contact with the left second contact wall 612, and the right grounding sheet 52 is in contact with the right second contact wall 612. At the same time, the four corner positions of the front end of the grounding cavity 61 are respectively provided with protruding steps 613, so that the left and right widths of the first contact wall 611 are smaller than the distance between the left and right two second contact walls 612.

[0041] As shown in FIG. 14 and FIG. 15, the shielding net plate 6 is provided with grounding grooves 62 on the left and right sides of each grounding cavity 61. As shown in FIG. 11-13, each shielding cylinder 7 further comprises a pin 72 for being inserted into the grounding groove 62 and being in interference fit with the inner wall of the grounding groove 62, that is, the pin 72 on one shielding cylinder 7 is provided with two pins 72, which are arranged on the left and right sides and are respectively inserted into the corresponding grounding groove 62. By arranging the pin 72, not only a better conduction effect between the shielding net plate 6 and the shielding cylinder 7 can be achieved, but also the fixing effect of the shielding cylinder 7 can be further enhanced, so that the shielding cylinder 7 does not need to be fixed by other fixing measures, and the assembly is very convenient.

[0042] The shielding cylinder 7 in the present application is a closed shell formed by riveting and pressing the metal sheet closed, that is, the riveting line 74 is a forming feature, and the metal on both sides of the riveting line 74 is in conduction by riveting. Since the shielding cylinder 7 is an independent cylindrical component, it does not need to be welded and assembled with other components during installation, so the installation is convenient and the assembly efficiency can be improved. In addition, since the shielding cylinder 7 is sleeved outside the plastic hole column, a second avoiding hole 73 is correspondingly provided on the shielding cylinder 7 for avoiding the plug-in end of the contact piece 3 when the plug-in end is deformed.

[0043] In order to facilitate the installation of the shielding cylinder 7, as shown in FIG. 9 and FIG. 10, the end plate 12 is provided with front and rear through holes, including a first through hole 121 for the two pins 72 of the shielding cylinder 7 to pass through and a second through hole 122 for the two pins 72 of the shielding cylinder 7 to pass through, so that the pin 71 can be inserted into the grounding cavity 61 of the shielding net plate 6, and the pin 72 can be inserted into the grounding groove 62 of the shielding net plate 6. Each through hole is arranged only by the plastic hole column 13.

[0044] When the connector of the present application is assembled, the shielding net plate 6 and each terminal module are installed into the installation cavity of the outer shell 1 from the rear side, the wire clamps 8 on the left and right sides are used to position each terminal module, each shielding cylinder 7 is sleeved outside the plastic hole column 13 from the front side, and the pins 71 and 72 of the shielding cylinder 7 are respectively inserted into the shielding net plate 6 in the installation cavity through the end plate 12, so as to realize common grounding conduction and fixation. Since the shielding net plate 6 and each shielding cylinder 7 are independent components, it is not necessary to weld multiple partitions between the two shielding plates of each terminal module to form a shielding cylinder structure as in the prior art, that is, it is not necessary to temporarily assemble a new component structure by welding, the installation is more convenient, the assembly process can be simplified, the assembly efficiency can be improved, and the welding process is avoided throughout the process, the process is simple, and the mass production is high.

[0045] In the connector of the present application, the cable shielding layers in each terminal module are in extrusion contact with the clamping plates 51 of the shielding sheets 5, realizing the contact and conduction of the cable shielding layers in a single terminal module with the upper and lower shielding sheets 5; the grounding sheets 52 of the upper and lower shielding sheets 5 are inserted into the grounding cavities 61 of the shielding mesh plates 6, realizing the contact and conduction of the shielding sheets 5 with the shielding mesh plates 6 and the common grounding of the cable shielding layers; the insertion plates 71 and the insertion pins 72 of the shielding cylinders 7 are inserted into the grounding cavities 61 and the grounding grooves 62 of the shielding mesh plates 6, respectively, realizing the contact and conduction of the shielding cylinders 7 with the shielding mesh plates 6 and the full shielding of the plug-in ends of each pair of contact pieces; meanwhile, the grounding elastic claws 53 of the shielding sheets 5 are in elastic pressure contact with the inner walls of the shielding cylinders 7, realizing the direct conduction between the shielding sheets 5 and the shielding cylinders 7, and finally realizing the contact between the shielding sheet 5, the shielding mesh plate 6 and the shielding cylinder 7, improving the common grounding reliability.

[0046] In the second embodiment of the connector of the present application, as shown in Figs. 23, 24, 25 and 26, the difference from the first embodiment is that only one grounding sheet 52 corresponding to one grounding cavity 61 is arranged on the single shielding sheet 5, the grounding sheet 52 has a certain width, and convex portions are arranged on the left and right sides of the grounding sheet 52 to be in interference fit with the inner walls of the grounding cavity 61. That is, the grounding elastic claws in the first embodiment are cancelled in this embodiment, and the shielding sheet 5 and the shielding cylinder 7 are no longer directly conductive, but can only be conductive through the shielding mesh plate 6. Since the grounding elastic claws are no longer arranged, the avoidance grooves do not need to be arranged on the upper and lower side surfaces of the fixed column 23, and the upper and lower side surfaces are both flat surfaces.

[0047] In other embodiments of the connector: when the size of the plastic hole column and the shielding cylinder is large enough, and the inner hole of the plastic hole column is large enough to deform the plug-in end of the contact piece, the avoidance hole does not need to be arranged on the plastic hole column and the shielding cylinder.

[0048] In other embodiments of the connector: the plastic hole column does not need to be formed on the outer shell body, as long as the shielding cylinder can maintain a sufficient distance with the plug-in end of the contact piece, without affecting the signal transmission. At this time, in order to facilitate the installation of the shielding cylinder, the through hole still needs to be arranged on the end plate.

[0049] In other embodiments of the connector: the insertion pin on the shielding cylinder can also be arranged as only one, and of course, the insertion pin can also not be arranged, and the insertion plate can be relied on to realize the fixation of the shielding cylinder by interference fit with the grounding cavity.

[0050] In other embodiments of the connector: when the shielding cylinder has only the insertion plate and no insertion pin, the two insertion plates can be arranged left and right, and the side wall of the grounding cavity contacted by the insertion plate can be the same side wall as the side wall contacted by the grounding sheet on the shielding sheet.

[0051] In other embodiments of the connector: the insertion plate can also not be arranged on the shielding cylinder, and only the insertion pin can be arranged, and the number of the insertion pin can be one, two, three or four.

[0052] In other embodiments of the connector: the elastic claw can be arranged on the shielding cylinder, and the clamping groove can be arranged on the shielding net plate or the outer shell, and the shielding cylinder is fixed by the clamping assembly of the elastic claw and the clamping groove.

[0053] In other embodiments of the connector: the contact mode of the plug-in plate and the inner wall of the grounding cavity can also be elastic top pressure contact, that is, the plug-in plate is not provided with a protrusion, and the plug-in plate is arranged in the form of an elastic claw. The contact mode of the grounding sheet and the inner wall of the grounding cavity can also be elastic top pressure contact, that is, the grounding sheet is not provided with a protrusion, and the grounding sheet is arranged in the form of an elastic claw.

[0054] In other embodiments of the connector: the grounding sheet and the plug-in plate can not be inserted into the same grounding cavity, but can be inserted into different grounding cavities.

[0055] In other embodiments of the connector: the contact and conduction mode between the shielding sheet and the shielding net plate can also be that the end of the shielding sheet directly top-presses the end face of the shielding net plate.

[0056] In other embodiments of the connector: the contact and conduction mode between the shielding cylinder and the shielding net plate can also be that the end of the shielding cylinder directly top-presses the end face of the shielding net plate, and of course, additional structures are needed to fix the shielding cylinder, for example, the elastic claw is arranged on the shielding cylinder, and the clamping groove is arranged on the outer shell, and the shielding cylinder is clamped and fixed on the outer shell by the elastic claw.

[0057] The above is only a preferred embodiment of the application, and is not used to limit the application, the patent protection scope of the application is subject to the claims, and any equivalent structural changes made by referring to the content of the specification and drawings of the application should also be included in the protection scope of the application.

Claims

1. A connector characterized by: The terminal module, the shielding net plate (6) and the shielding cylinder (7) are included, the terminal module includes the insulator (2) and the shielding sheet (5) and the pair of contact pieces (3) fixed on the insulator (2), the shielding sheet (5) is provided with the pressing part for being in contact with the cable shielding layer top pressing, the plug-in end of the front end of each pair of contact pieces (3) extends to the front side of the shielding sheet (5), the shielding net plate (6) is provided with the ground cavity (61) corresponding to each pair of contact pieces (3) for the plug-in end of the contact piece (3) to pass through, the shielding cylinder (7) is correspondingly sleeved on the plug-in end outside each pair of contact pieces (3), and each shielding cylinder (7) and each shielding sheet (5) are located on both sides of the shielding net plate (6) and are in contact with the shielding net plate (6) and are in contact with the shielding net plate (6).

2. The connector of claim 1, wherein: The front end of each shielding sheet (5) is provided with the ground sheet (52) for being inserted into the ground cavity (61) and being in contact with the inner wall of the ground cavity (61) in the position corresponding to the ground cavity (61).

3. The connector of claim 2, wherein: The shielding sheet (5) is provided with two ground sheets (52) corresponding to one ground cavity (61), and the two ground sheets (52) are arranged at intervals.

4. The connector of claim 2 or 3, wherein: The front end of each shielding sheet (5) is further provided with a ground spring claw (53) in the position corresponding to the ground cavity (61), the ground spring claw (53) is located between the two ground sheets (52), and the ground spring claw (53) is in elastic pressing contact with the inner wall of the corresponding shielding cylinder (7).

5. The connector of claim 2 or 3, wherein: The ground sheet (52) is provided with a convex part, and the ground sheet (52) is in interference fit with the inner wall of the ground cavity (61) through the convex part.

6. The connector of claim 5, wherein: Each shielding cylinder (7) includes an insertion plate (71) for being inserted into the corresponding ground cavity (61) and being in contact with the inner wall of the ground cavity (61), and the insertion plate (71) and the ground sheet (52) in the same ground cavity (61) are arranged front and back.

7. The connector of claim 5, wherein: The insertion plate (71) on one shielding cylinder (7) is provided with two, the two insertion plates (71) are arranged at intervals and are inserted into the same ground cavity (61), and the two insertion plates (71) are respectively provided with a convex spike to interfere with the inner wall of the ground cavity (61).

8. The connector of claim 5, wherein: The insertion plate (71) on one shielding cylinder (7) is provided with two, the two insertion plates (71) are arranged at intervals and are inserted into the same ground cavity (61), and the two insertion plates (71) are respectively in contact with the upper and lower inner walls of the ground cavity (61).

9. The connector of claim 8, wherein: The ground sheet (52) in one ground cavity (61) is in contact with the left and right inner walls of the ground cavity (61). The shielding net plate (6) is provided with a grounding groove (62) on the side of the ground cavity (61), and each shielding cylinder (7) further includes an insertion pin (72) for being inserted into the grounding groove (62) and being in interference fit with the inner wall of the grounding groove (62). The insertion plate (71) on one shielding cylinder (7) is provided with two, the two insertion plates (71) are arranged at intervals and are inserted into the same ground cavity (61), and the shielding net plate (6) is provided with a grounding groove (62) on the left and right sides of one ground cavity (61), and the insertion pin (72) on one shielding cylinder (7) is provided with two, the two insertion pins (72) are arranged at intervals and are respectively inserted into the corresponding grounding groove (62).

10. The connector of claim 1, wherein: Each shielding cylinder (7) comprises an insertion plate (71) for insertion into a corresponding grounding cavity (61) and in contact with the inner wall of the grounding cavity (61).

11. The connector of claim 10, wherein: The insertion plate (71) on one shielding cylinder (7) is provided with two, which are arranged in an upper and lower interval and inserted into the same grounding cavity (61), and the two insertion plates (71) are respectively provided with a protruding spike to fit with the inner wall of the grounding cavity (61) by interference.

12. The connector of claim 10, wherein: The shielding mesh plate (6) is provided with a grounding groove (62) beside the grounding cavity (61), and each shielding cylinder (7) further comprises an insertion foot (72) for insertion into the grounding groove (62) and interference fit with the inner wall of the grounding groove (62).

13. The connector of claim 12, wherein: The insertion plate (71) on one shielding cylinder (7) is provided with two, which are arranged in an upper and lower interval and inserted into the same grounding cavity (61), and the shielding mesh plate (6) is provided with a grounding groove (62) on the left and right sides of one grounding cavity (61), respectively, and the insertion foot (72) on one shielding cylinder (7) is provided with two, which are arranged in a left and right interval and respectively inserted into the corresponding grounding groove (62).

14. The connector of any one of claims 1-3, wherein: The shielding mesh plate (6) is provided with a grounding groove (62) beside the grounding cavity (61), and each shielding cylinder (7) further comprises an insertion foot (72) for insertion into the grounding groove (62) and interference fit with the inner wall of the grounding groove (62).

15. The connector of claim 14, wherein: The shielding mesh plate (6) is provided with a grounding groove (62) on the left and right sides of one grounding cavity (61), respectively, and the insertion foot (72) on one shielding cylinder (7) is provided with two, which are arranged in a left and right interval and respectively inserted into the corresponding grounding groove (62).

16. The connector of claim 12 or 13, wherein: The connector further comprises an injection-molded outer housing (1), which comprises a mounting cavity (11) for mounting each terminal module, the rear end of the mounting cavity (11) has a mounting opening, the front end of the mounting cavity (11) is provided with an end plate (12), the shielding mesh plate (6) is arranged in the mounting cavity (11) and abuts the rear end face of the end plate (12), the front end face of the end plate (12) is integrally formed with a plastic hole column (13) corresponding to each shielding cylinder (7), the inner hole of the plastic hole column (13) is used to accommodate the plug-in end of a pair of contact pieces (3), each shielding cylinder (7) is sleeved outside the corresponding plastic hole column (13), and the end plate (12) is provided with a perforation for the insertion foot (72) and the insertion plate (71) of the shielding cylinder (7) to pass through to plug with the shielding mesh plate (6).

17. The connector of claim 16, wherein: Each shielding cylinder (7) and each plastic hole column (13) is respectively provided with an avoidance hole for avoiding the plug-in end of the contact piece (3) when the plug-in end is deformed.

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