RJ-45 connector and circuit board assembly thereof

Abstract

The utility model relates to an RJ-45 connector and a circuit board assembly thereof, and the RJ-45 connector comprises a front housing, a front inner core which is disposed in a front inner cavity of the front housing, and the front end of the front inner core is provided with a front network port; the rear inner core is arranged in a rear inner cavity of the rear shell, and a rear net port is formed in the rear end of the rear inner core; the electric connector is characterized in that a circuit board assembly comprises a hard circuit board which is electrically connected with the front contact pin group and the rear contact pin group; the sealing gasket is lined on the front side surface or / and the rear side surface of the hard circuit board; the hard circuit board and the sealing gasket are connected and fixed between the front shell and the rear shell through the connecting piece, and the supporting insulating blocks are fixed on the two sides of the hard circuit board to support the contact pins of the contact pin group; at least the front part of the flexible circuit board is attached to the supporting insulating block, and the flexible circuit board is riveted and conducted with each contact pin; and a metal needle is riveted at the rear part and is electrically connected and fixed on the hard circuit board. According to the utility model, the defects caused by thermal expansion and cold contraction can be overcome, water and gas can be prevented, and the high-frequency Cat6A communication requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission of network signal data, in particular to a straight-through network connector socket and a related circuit board component. Background Art

[0002] There are many types of existing network connectors, the most common of which is the RJ45 interface. Network connectors are usually used for data transmission, and the most common application is the network card interface. They are widely used in people's lives, such as interfaces on network cards, network interfaces on routers and switches, etc.

[0003] At present, the connector sockets that can pass the CAT6A high-frequency performance test usually have two structures. One is that the contact terminal has a front contact pin group and a rear contact pin group, the front contact pin group is located in the front network port, and the rear contact pin group is located in the rear network port; there is also a circuit board component connecting the front contact pin group and the rear contact pin group. It mainly uses a hard circuit board. The hard circuit board is arranged horizontally in the inner core, so it can pass the CAT6A high-frequency performance test, but it cannot prevent gas, and can only be slightly waterproof on the surface. Because of the need to install the hard circuit board, the middle of the interior must be connected, such as Figure 1 , 2 The other is to arrange the hard circuit board vertically in the inner core, and electrically connect the front contact pin group and the rear contact pin group on both sides. Since the hard circuit board isolates the front and rear cavities and the middle is blocked, it is airtight and waterproof. However, this connector cannot pass the CAT6A high-frequency performance test, and the hot and cold climate will affect the expansion and contraction of the hard circuit board, so it is easy to cause air leakage and water leakage over time. Figure 3 , 4 .

[0004] To this end, the market requires engineers to design an RJ-45 connector with better sealing performance, which is waterproof and airtight, and especially can pass the CAT6A high-frequency performance test. Summary of the invention

[0005] The primary technical problem to be solved by the utility model is to provide an RJ-45 connector with a simple structure and better sealing performance in view of the above technical status quo, which can overcome the defects caused by thermal expansion and contraction and can be waterproof and gasproof.

[0006] Another technical problem to be solved by the utility model is to provide an RJ-45 connector which is easy to assemble, has a reasonable layout of wires, is not prone to interference between channels, and has product transmission performance that meets high-frequency communication performance.

[0007] Another technical problem to be solved by the utility model is to provide a circuit board component in the above RJ-45 connector in view of the above technical status.

[0008] The technical solution adopted by the utility model to solve the above-mentioned primary technical problem is: an RJ-45 connector, which includes:

[0009] A front housing is axially hollow and has a front inner cavity, a front end of which radially extends outward to form a mounting portion to form a mounting panel, and a front end of the front inner cavity forms a front connection port;

[0010] A front inner core is disposed in the front inner cavity and has a front mesh opening at the front end;

[0011] A rear outer shell is axially hollow and has a rear inner cavity, a front end of which radially extends outward to form a connecting portion connected to the front outer shell, and a rear end of the rear inner cavity forms a rear connection port;

[0012] A rear inner core is disposed in the rear inner cavity and has a rear mesh port at the rear end;

[0013] The contact terminal comprises a front contact pin group and a rear contact pin group, wherein the front contact pin group is located in the front network port and the rear contact pin group is located in the rear network port;

[0014] The invention is characterized in that: another circuit board component comprises:

[0015] a rigid circuit board electrically connecting the front contact pin group and the rear contact pin group;

[0016] A sealing gasket, lining the front and / or rear side of the rigid circuit board;

[0017] A set of connectors are used to connect and fix the hard circuit board and the sealing gasket between the front housing and the rear housing.

[0018] The technical solution adopted by the utility model to solve the above-mentioned other technical problem is: further improvement is made on the basis of the above-mentioned, and the contact pin group includes:

[0019] A supporting insulating block to support each contact pin of the contact pin group;

[0020] A flexible circuit board, at least the front part is attached to the supporting insulating block and is riveted to each contact pin for conduction; the rear part is riveted with metal pins, which are electrically connected and fixed to the rigid circuit board.

[0021] Further improved, the supporting insulating block has:

[0022] A support portion, with long slots for positioning and fixing the contact pins, and a transverse positioning groove on the back for positioning the flexible circuit board;

[0023] A fixing part is connected to the rear end of the supporting part and is provided with a longitudinal positioning groove on the side for positioning the flexible circuit board.

[0024] Preferably, the connecting member is a screw, and correspondingly, the connecting portion of the rear shell, the hard circuit board and the sealing gasket are provided with respective connecting holes, and the rear end of the front shell is provided with screw holes, so as to seal and connect the front shell, the circuit board assembly and the rear shell.

[0025] Furthermore, an annular groove is formed in the front portion of the front inner cavity and is lined with a side wall waterproof ring.

[0026] Furthermore, the outer surface of the mounting panel is connected with a waterproof cover by screws, and the waterproof cover includes:

[0027] A cover body, adapted to the shape of the mounting panel, with connection holes distributed at the corners;

[0028] A sealing cover, comprising a sealing portion for sealing with the connection port of the front inner cavity, a cover body with a handle on the outside of the sealing portion, and a sealing ring for cooperating with a convex ring of the mounting panel on the inner surface of the cover body;

[0029] A connecting belt is connected between the cover body and the sealing cover.

[0030] Furthermore, positioning grooves and positioning block matching structures are distributed on the circumferential contact surfaces between the front shell and the front inner core, and between the rear shell and the rear inner core.

[0031] Finally, fixing slots are provided on both sides of the front inner core and the rear inner core to position and fix the grounding sheet.

[0032] The utility model solves the above-mentioned technical problem by adopting a technical solution: a circuit board assembly in an RJ-45 connector, comprising: a hard circuit board electrically connected to the front contact pin group and the rear contact pin group; and characterized in that there is another

[0033] A sealing gasket, lining the front and / or rear side of the rigid circuit board;

[0034] A set of connectors connects and fixes the hard circuit board and the sealing gasket between the front shell and the rear shell of the RJ-45 connector.

[0035] Further improvement, the contact pin group includes:

[0036] A supporting insulating block to support each contact pin of the contact pin group;

[0037] A flexible circuit board, at least the front part is attached to the supporting insulating block and is riveted to each contact pin for conduction; the rear part is riveted with metal pins, which are electrically connected and fixed to the rigid circuit board.

[0038] As a further improvement, the supporting insulating block has:

[0039] A support portion, with long slots for positioning and fixing the contact pins, and a transverse positioning groove on the back for positioning the flexible circuit board;

[0040] A fixing part is connected to the rear end of the supporting part and is provided with a longitudinal positioning groove on the side for positioning the flexible circuit board.

[0041] Compared with the prior art, the advantages of the utility model are:

[0042] Adopting the combination design of flexible board + hard board + rubber pad, the flexible board can be bent inside the device for easy transfer;

[0043] The hard board and the flexible board are welded, the lines are connected, and the wires are reasonably laid out, so interference is not easy to occur between channels. The product transmission performance meets the high-frequency communication performance CAT5E, CAT6, and CAT6A;

[0044] The hard board provides sufficient hardness, and uses the (board) plane to fit face to face with the rubber pad to prevent water and air from passing through the device;

[0045] The rubber pad is soft and has a certain hardness and elasticity. After being squeezed and fitted with the hard board, it has sufficient elastic redundancy for thermal expansion and contraction, regardless of the low temperature environment in winter or the high temperature environment in summer, and can provide stable long-term sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 A structural cross-sectional view of an RJ-45 connector in the prior art;

[0047] Figure 2 A structural cross-sectional view of a circuit board assembly in an RJ-45 connector in the prior art;

[0048] Figure 3 Another structural cross-sectional view of an RJ-45 connector in the prior art;

[0049] Figure 4 Another structural cross-sectional view of a circuit board assembly in an RJ-45 connector in the prior art;

[0050] Figure 5 This is one of the three-dimensional diagrams of the RJ-45 connector of the present utility model;

[0051] Figure 6 This is the second stereogram of the RJ-45 connector of the present utility model;

[0052] Figure 7 This is a front view of the RJ-45 connector of the present utility model;

[0053] Figure 8 It is a side view of the RJ-45 connector of the present utility model;

[0054] Fig. 9 It is a cross-sectional view of the RJ-45 connector of the present utility model;

[0055] Fig.10 This is an exploded view of the RJ-45 connector of the present utility model;

[0056] Fig.11 It is a structural cross-sectional view of a circuit board assembly in an RJ-45 connector of the utility model;

[0057] Fig.12 This is a structural exploded view of the circuit board assembly in the RJ-45 connector of the utility model; DETAILED DESCRIPTION

[0058] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0059] like Figures 5 to 12 As shown, an RJ-45 connector is generally waterproof and airtight, and its transmission performance meets the requirements of high-frequency communication performance CAT5E, CAT6, and CAT6A. It includes a front shell 1, a front inner core 2, a circuit board assembly 3, a rear shell 4, a rear inner core 5, and contact terminals. Among them,

[0060] The front housing 1 is axially hollow and has a front inner cavity 11. A mounting portion with a substantially square outline is radially extended outward from the front end to form a mounting panel 12. A mounting hole 13 is provided at the diagonal portion of the mounting panel. An annular groove 13 is provided at the front of the front inner cavity 11, and a waterproof ring 14 is provided on the inner wall to achieve a better waterproof effect. A front connection port 15 is formed at the front end of the front inner cavity for plug-in connection. Positioning grooves 16 are distributed along the circumferential surface of the rear inner wall surface, and screw holes 17 are distributed on the rear end surface of the front housing 1;

[0061] The front inner core 2 is usually made of insulating material, arranged in the front inner cavity 11, and has a front mesh port 21 at the front end, and the front contact pin group 61 of the contact terminal 6 is located in the front mesh port 21. The left and right sides are provided with fixing slots 22 for positioning and fixing the grounding plate 7. The rear part of the front inner core 2 is generally cylindrical, and positioning blocks 23 are distributed on the outer circumferential surface, which cooperate with the aforementioned positioning slots 16 to form a positioning structure;

[0062] Similarly, the rear housing 4 is axially hollow and has a rear inner cavity 41. A connecting portion 42 is radially extended outward from the front end. The connecting portion is similar to a flange and has connecting holes 43. The connecting portion is connected to the front housing 1 through a connecting member 33 such as a screw. A rear connecting port 45 is formed at the rear end of the rear inner cavity 41 for plug-in connection. A positioning groove 46 is distributed along the circumferential surface of the front inner wall surface. A plurality of connecting holes 43 are distributed along the circumference of the connecting portion 42.

[0063] The rear inner core 5 is usually made of insulating material, arranged in the rear inner cavity 41, and has a rear mesh port 51 at the rear end, and a rear contact pin group 62 of the contact terminal is located in the rear mesh port 51. There are fixing slots 52 on the left and right sides for positioning and fixing the grounding plate 7. The front part of the rear inner core 5 is generally cylindrical, and positioning blocks 53 are distributed on the outer circumference, which cooperate with the positioning slots 46 of the aforementioned rear outer shell 4 to form a positioning structure;

[0064] Another circuit board assembly 3 includes a hard circuit board 31, a sealing gasket 32, a connector 33, a support insulating block 34, a flexible circuit board 35 and other main components. On the left and right sides of the hard circuit board 31, respective support insulating blocks 34 are fixed in an upper and lower offset manner, respectively, a left support insulating block and a right support block. Each support block 34 is made of insulating material, and the main body presents a generally "inverted L" shaped cross section, with a support portion 341, and distributed with long slots 342 for positioning and fixing each contact pin to position each contact pin of the support contact pin group, and the back has a flexible circuit board 35 for positioning A transverse positioning groove 343 and a fixing portion 344 are connected to the rear end of the support portion 341, and a longitudinal positioning groove 345 for positioning the flexible circuit board 35 is arranged on the side. Usually, the transverse positioning groove 343 and the longitudinal positioning groove 345 are connected to facilitate the folding and extension of the flexible circuit board. The front part of the flexible circuit board 35 is attached to the supporting insulating block 34 and is riveted to each contact pin for conduction; the rear part is riveted with a metal pin 36, which is electrically connected and fixed to the hard circuit board 31, so that the front contact pin group 61 and the rear contact pin group 62 of the contact terminal are electrically connected, and the hard circuit board 31 is welded with the flexible circuit board 35. The circuit is connected, and the wires can be reasonably arranged so that interference is not easily generated between channels, so that the transmission performance of the product meets the requirements of high-frequency communication performance CAT5E, CAT6, and CAT6A. The flexible circuit board can be bent, which is convenient for switching within the device. There is another sealing gasket 32 ​​lining the front side of the hard circuit board 35. Usually, the sealing gasket 32 ​​is made of silicone material, and connecting holes 321 are distributed on the sealing gasket 32. In this way, the connecting member 33 uses screws, and the connecting part 42 of the rear shell 4, the hard circuit board 31 and the sealing gasket 32 ​​are distributed with their own connecting holes, and the rear end of the front shell 1 is distributed with screw holes 17. The rigid circuit board 31 and the sealing gasket 32 ​​are connected and fixed between the front housing 1 and the rear housing 4 by screws, so as to isolate and prevent the cavities of the front housing 1 and the rear housing 4 from being connected, and at the same time, the front housing 1, the circuit board assembly 3, and the rear housing 4 are sealed and connected. The rigid circuit board provides sufficient hardness, and the (board surface) plane is fitted face to face with the rubber pad to prevent water and air from passing through the device. The rubber pad is soft, has a certain hardness and elasticity, and after being squeezed and fitted with the rigid circuit board, it has sufficient elastic redundancy for thermal expansion and contraction, whether in the low temperature environment in winter or the high temperature environment in summer, and can provide stable long-term sealing.

[0065] Finally, the outer surface of the installation panel 12 is connected to a waterproof cover 8 by screws. The waterproof cover 81 includes a cover body 81, a sealing cover 83 and a connecting belt 82. The cover body 81 is adapted to the shape of the installation panel 12, and connecting holes 811 are distributed in the corners to facilitate the connection of the installation panel 12 with screws. The sealing cover 83 has a sealing portion 831 that cooperates with the connecting port 15 of the front inner cavity to seal. The outer side of the sealing portion 831 has a cover body 832 with a handle. The inner surface of the cover body 832 is also distributed with a sealing ring 833 that cooperates with the convex ring of the installation panel 12 to improve the waterproof and airproof effect. The connecting belt 82 is connected between the cover body 81 and the sealing cover 83. The cover body 81, the sealing cover 83 and the connecting belt 82 are usually made into an integral part by a plastic molding process.

[0066] The connector of the utility model adopts a combined design of flexible board + hard board + rubber pad. The flexible board can be bent in the device for easy transfer. The hard board and the flexible board are welded to connect the lines, and the wires are reasonably laid out. Interference is not easy to occur between channels, and the product transmission performance meets the high-frequency communication performance CAT5E, CAT6, and CAT6A. The hard board provides sufficient hardness, and the (board) plane is used to fit face to face with the rubber pad to isolate water and air from passing through the device. The rubber pad is soft and has a certain hardness and elasticity. After being squeezed and fitted with the hard board, it has sufficient elastic redundancy for thermal expansion and contraction, whether in the low temperature environment in winter or the high temperature environment in summer, and can provide stable long-term sealing, which can meet the waterproof, airproof, and high-frequency Cat6A communication requirements.

[0067] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An RJ-45 connector, comprising: A front housing is axially hollow and has a front inner cavity, a front end of which radially extends outward to form a mounting portion to form a mounting panel, and a front end of the front inner cavity forms a front connection port; A front inner core is disposed in the front inner cavity and has a front mesh opening at the front end; A rear outer shell is axially hollow and has a rear inner cavity, a front end of which radially extends outward to form a connecting portion connected to the front outer shell, and a rear end of the rear inner cavity forms a rear connection port; A rear inner core is disposed in the rear inner cavity and has a rear mesh port at the rear end; The contact terminal comprises a front contact pin group and a rear contact pin group, wherein the front contact pin group is located in the front network port and the rear contact pin group is located in the rear network port; Features: Another circuit board assembly includes: a rigid circuit board electrically connecting the front contact pin group and the rear contact pin group; A sealing gasket, lining the front and / or rear side of the rigid circuit board; A set of connectors are used to connect and fix the hard circuit board and the sealing gasket between the front housing and the rear housing.

2. The RJ-45 connector according to claim 1, characterized in that The contact pin set comprises: A supporting insulating block to support each contact pin of the contact pin group; A flexible circuit board, at least the front part is attached to the supporting insulating block and is riveted to each contact pin for conduction; the rear part is riveted with metal pins, which are electrically connected and fixed to the rigid circuit board.

3. The RJ-45 connector according to claim 2, characterized in that: The supporting insulating block comprises: A support portion, with long slots for positioning and fixing the contact pins, and a transverse positioning groove on the back for positioning the flexible circuit board; A fixing part is connected to the rear end of the supporting part and is provided with a longitudinal positioning groove on the side for positioning the flexible circuit board.

4. The RJ-45 connector according to claim 1, characterized in that: The connecting piece adopts screws, and correspondingly, the connecting part of the rear shell, the hard circuit board and the sealing gasket are distributed with respective connecting holes, and the rear end of the front shell is distributed with screw holes, so as to seal and connect the front shell, the circuit board assembly and the rear shell.

5. The RJ-45 connector according to claim 1, characterized in that: The front part of the front inner cavity is provided with an annular groove, which is lined with a side wall waterproof ring.

6. The RJ-45 connector according to claim 1, characterized in that: The outer surface of the mounting panel is connected with a waterproof cover by screws, and the waterproof cover includes: A cover body, adapted to the shape of the mounting panel, with connection holes distributed at the corners; A sealing cover, comprising a sealing portion for sealing with the connection port of the front inner cavity, a cover body with a handle on the outside of the sealing portion, and a sealing ring for cooperating with a convex ring of the mounting panel on the inner surface of the cover body; A connecting belt is connected between the cover body and the sealing cover.

7. The RJ-45 connector according to claim 1, characterized in that: Positioning grooves and positioning block matching structures are distributed on the circumferential contact surfaces between the front outer shell and the front inner core, and between the rear outer shell and the rear inner core.

8. The RJ-45 connector according to claim 1, characterized in that: Both sides of the front inner core and the rear inner core are provided with fixing slots to position and fix the grounding sheet.

9. A circuit board assembly in an RJ-45 connector, comprising: a hard circuit board electrically connected to a front contact pin group and a rear contact pin group; characterized in that Other A sealing gasket, lining the front and / or rear side of the rigid circuit board; A set of connectors connects and fixes the hard circuit board and the sealing gasket between the front shell and the rear shell of the RJ-45 connector.

10. The circuit board assembly in the RJ-45 connector according to claim 9, characterized in that: The contact pin set comprises: A supporting insulating block to support each contact pin of the contact pin group; A flexible circuit board, at least the front part is attached to the supporting insulating block and is riveted to each contact pin for conduction; the rear part is riveted with metal pins, which are electrically connected and fixed to the rigid circuit board.

11. The circuit board assembly in the RJ-45 connector according to claim 10, characterized in that: The supporting insulating block comprises: A support portion, with long slots for positioning and fixing the contact pins, and a transverse positioning groove on the back for positioning the flexible circuit board; A fixing part is connected to the rear end of the supporting part and is provided with a longitudinal positioning groove on the side for positioning the flexible circuit board.

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