CN209747830U

CN209747830U - RJ connector

Info

Publication number: CN209747830U
Application number: CN201920582690.4U
Authority: CN
Inventors: 李锦琦; 张彬; 万佳美; 候立华
Original assignee: Dongguan Leader Precision Industry Co Ltd
Current assignee: Dongguan Leader Precision Industry Co Ltd
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2019-12-06
Anticipated expiration: 2029-04-24

Abstract

An RJ connector comprises an insulating body and a plurality of conductive terminals accommodated in the insulating body, wherein the insulating body is provided with a plug hole, each conductive terminal comprises a fixing part, a contact arm extending from the fixing part and a welding pin extending out of the insulating body from the fixing part, at least part of the contact arm of each conductive terminal extends into the plug hole forwards and upwards from the fixing part, and at least part of the contact arm of each conductive terminal bends upwards and backwards from the fixing part and extends into the plug hole.

Description

RJ connector

Technical Field

The utility model relates to a RJ connector especially relates to a reduce RJ connector who crosstalks.

Background

With the development of science and technology, most of the electronic devices used in the electronic information industry tend to be small and multifunctional. In order to facilitate data transmission between different electronic devices, several communication protocols with different specifications have been developed, and corresponding electrical connectors have been developed for each communication protocol for electrical connection between different electronic devices to transmit data. In recent years, connectors operating on a large scale at network interfaces belong to Twisted pair (Twisted pair) connectors, and the subdivided Twisted pair connectors can be roughly divided into two types: an RJ45 connector and an RJ11 connector.

Along with the gradual increase of the function integration of electronic products, most of RJ45 connectors have higher and higher transmission rate, and because 8 conductive structures of the RJ45 connector are the same and are arranged side by side, crosstalk of 1-2 channels to adjacent channels, namely 3-6 channels, 4-5 channels and 7-8 channels, is unqualified, and the standard of near-end crosstalk of Cat 5E is difficult to meet; although the current terminal has a simple structure and is convenient to produce, the near-end crosstalk obtained by testing under the condition that the high-frequency is close to 100MHz is larger than-43 dB, and the near-end crosstalk cannot pass the high-frequency test.

Therefore, there is a need to design a new RJ connector to solve the above-mentioned technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a RJ connector with improve high frequency characteristic.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an RJ connector comprises an insulating body and a plurality of conductive terminals accommodated in the insulating body, wherein the insulating body is provided with a plug hole, each conductive terminal comprises a fixing part, a contact arm extending from the fixing part and a welding pin extending out of the insulating body from the fixing part, at least part of the contact arm of each conductive terminal extends into the plug hole from the fixing part forwards and upwards, and at least part of the contact arm of each conductive terminal is bent upwards and backwards from the fixing part and extends into the plug hole.

As a further improved technical solution of the present invention, the conductive terminal includes a first terminal, a second terminal, a third terminal, a fourth terminal, a fifth terminal, a sixth terminal, a seventh terminal and an eighth terminal which are horizontally and sequentially arranged along the horizontal direction.

As a further improved technical solution of the present invention, the first terminal, the second terminal, the fourth terminal, the sixth terminal the contact arm is from the fixing portion extends forward and upward into the insertion hole, and the contact arm is set to be an upward convex arc-shaped structure.

As a further improved technical solution of the present invention, the third terminal, the fifth terminal, the seventh terminal, the eighth terminal the contact arm extends into the insertion hole from the fixing portion being bent upward and backward, and the contact arm is set to be a diagonal structure.

As a further improved technical solution of the present invention, the contact arm of the conductive terminal is consistent with the conductive terminal in the horizontal and horizontal arrangement order.

As a further improved technical scheme of the utility model, insulator include the insulator and assemble in supporting shoe in the insulator, conductive terminal equipment or insert molding in form the terminal module on the supporting shoe.

As a further improved technical solution of the present invention, the supporting block upper surface is provided with a plurality of first terminal grooves arranged at a transverse interval, at least partially the contact arm portion is partially accommodated in the first terminal grooves.

As a further improved technical scheme of the utility model, the supporting shoe lower surface is equipped with a plurality of second terminal grooves of horizontal interval arrangement, at least partly the fixed part is fixed in second terminal groove.

As a further improved technical scheme of the utility model, the supporting shoe front end is equipped with connects respectively the second terminal groove with the fluting of supporting shoe upper surface, the fixed part with the arc kink has between the contact arm, the kink accept one by one in the fluting.

As the utility model discloses further modified technical scheme, spaced apart a plurality of convex parts and being located adjacently about the supporting shoe rear end is equipped with first spacing groove between the convex part, the concave second spacing groove that is equipped with in convex part rear end, the welding foot is arranged into two rows along the fore-and-aft direction, and quilt respectively first spacing groove second spacing groove transverse location lives.

As the utility model discloses further modified technical scheme still includes a pair of metal stationary blade, insulator both sides face is equipped with the fixed slot, the stationary blade is fixed in including inserting forward the portion of inserting and the downwardly extending of fixed slot insulator's fixed foot.

Compared with the prior art, the utility model discloses RJ connector at least partly conductive terminal the contact arm is followed the fixed part is forward, upwards extend into the spliced eye, at least partly conductive terminal the contact arm is followed the fixed part is upwards, is bent backward and extends into the spliced eye, has reduced conductive terminal's crosstalk, optimizes the high frequency characteristic, tests under the high frequency is for being close to 100MHz condition, and the near-end crosstalk of deriving is not more than-43 dB, through the high frequency test, can satisfy Cat 5E's near-end crosstalk's standard.

Drawings

Fig. 1 is a schematic perspective view of the RJ connector of the present invention.

Fig. 2 is a schematic perspective view of another angle of the RJ connector of the present invention.

Fig. 3 is an exploded perspective view of the RJ connector of the present invention.

Fig. 4 is an exploded perspective view of the RJ connector of the present invention with the support block and the conductive terminal separated.

Fig. 5 is a perspective view of the RJ connector according to the present invention, in which the support block and the conductive terminal are assembled together.

Fig. 6 is a perspective view of the insulating base of the RJ connector of the present invention.

Fig. 7 is a perspective view of the conductive terminal of the RJ connector of the present invention.

Detailed Description

Referring to fig. 1 to 7, the present invention discloses an RJ connector 100 for mounting on a circuit board (not shown) for plugging a network plug (not shown). The RJ connector 100 includes an insulating body, a plurality of conductive terminals 30 and a pair of metal fixing pieces 40, the insulating body includes an insulating base 10 and a supporting block 20 assembled in the insulating base 10, the conductive terminals 30 are assembled or insert-molded on the supporting block 20 to form a terminal module, and the fixing pieces 40 are used for fixing the RJ connector 100 on a circuit board.

The insulating base 10 has a plug hole 11 at the front end and a fixed cavity 12 at the rear end, the plug hole 11 is through with the fixed cavity 12, and the plug hole 11 is used for accommodating a network plug. The left and right sides of the insulating base 10 are provided with fixing slots 13 for fixing the fixing pieces 40.

The supporting block 20 is inserted and fixed into the fixing cavity 12 of the insulating base 10 forward and extends into the inserting hole 11 forward. The upper surface of the supporting block 20 is provided with a plurality of first terminal grooves 21, the lower surface of the supporting block 20 is provided with a plurality of second terminal grooves 22, the first terminal grooves 21 and the second terminal grooves 22 respectively penetrate through the supporting block 20 backwards, the first terminal grooves 21 are grooves, the front parts of the second terminal grooves 22 are grooves, and the rear parts of the second terminal grooves 22 are through holes. The supporting block 20 is provided at a front end thereof with a slot 23 connecting each of the second terminal grooves 22 with an upper surface of the supporting block 20. The rear end of the supporting block 20 is provided with a plurality of convex parts 25 which are spaced from each other left and right and a first limiting groove 261 which is positioned between the adjacent convex parts 25, the rear end of each convex part 25 is concavely provided with a second limiting groove 262, the first limiting grooves 261 are aligned left and right to form a line, and the second limiting grooves 262 are aligned left and right to form another line.

The conductive terminals 30 have eight terminals, including first terminals 31 arranged in a horizontal direction (left-right direction),

The first terminal 31 and the second terminal 32 are a fourth channel, the third terminal 34 and the fifth terminal 35 are a third channel, the seventh terminal 37 and the eighth terminal 38 are first channels, the third terminal 33 and the sixth terminal 36 are second channels, the fourth terminal 34 and the fifth terminal 35 are third channels, and the first terminal 32 and the second terminal 33 are fourth channels. Each conductive terminal 30 includes a fixing portion 301, a contact arm 302 extending from one end of the fixing portion 301, and a solder leg 303 vertically bent and extending downward from the other end of the fixing portion 301. The first terminals 31, the second terminals 32, the fourth terminals 34, and the sixth terminals 366 are assembled in the first terminal grooves 21 one by one, and the third terminals 33, the fifth terminals 35, the seventh terminals 37, and the eighth terminals 38 are assembled in the corresponding second terminal grooves 22 one by one. The first terminal 31, the second terminal 32, the fourth terminal 34 and the sixth terminal 366 have substantially the same structure, the contact arm 302 is configured as an upward-protruding arc-shaped structure, the contact arm 302 extends forward and upward from the fixing portion 301, the fixing portion 301 is fixed to the first terminal groove 21, and the contact arm 302 is partially accommodated in the first terminal groove 21 and extends into the plug hole 11 for electrically contacting with the network plug.

The third terminal 33, the fifth terminal 35, the seventh terminal 37 and the eighth terminal 38 have substantially the same structure, the contact arm 302 is a diagonal structure, and is bent and extended upwards and backwards from the fixing portion 301 to the inserting hole 11 for electrically contacting with the network plug, an arc-shaped bending portion 305 is provided between the fixing portion 301 and the contact arm 302, and the bending portions 305 are received in the corresponding slots 23 one by one. The contact arms 302 of each conductive terminal 30 are aligned with the transverse alignment of the conductive terminals 30. The welding pins 303 are arranged into a front row and a rear row, the welding pins 303 in the front row are transversely positioned by the first limiting groove 261, the welding pins 303 in the rear row are transversely positioned by the second limiting groove 262, and the welding pins 303 of every two adjacent conductive terminals 30 are staggered front and rear, so that the distance between the welding pins 303 is increased, and the welding is convenient.

The fixing plate 40 is substantially in a shape of "7", and includes an insertion portion 41 extending forward and a fixing leg 42 extending downward from the insulating base 10, the insertion portion 41 has barbs on its side, the insertion portion 41 is inserted forward and fixed in the fixing groove 13 of the insulating base 10, and the fixing leg 42 is used for fixing to the circuit board.

The contact arm 302 of one part of the conductive terminal 30 of the RJ connector 100 of the present invention extends forward and upward into the mating hole 11 from the fixing portion 301, the contact arm 302 of the other part of the conductive terminal 30 bends upward and backward from the fixing portion 301 and extends into the mating hole 11, a first distance is provided between the sixth terminal 36 and the seventh terminal 37 in space, a second distance is provided between the sixth terminal 36 and the eighth terminal 38, the contact arm 302 of the sixth terminal 36 extends forward and upward, which is beneficial to reducing the difference between the first distance and the second distance, and reducing the crosstalk of the sixth terminal 36 to the first channel; since the channels are mutually influenced, when the influence of the sixth terminal 36 on the first channel is changed, in turn, the seventh terminal 37 or the eighth terminal 38 influences the sixth terminal 36 and the third terminal 33, because the distance between the sixth terminal 36 and the seventh terminal 37 or the eighth terminal 38 is increased, the distance between the third terminal 33 and the seventh terminal 37 or the eighth terminal 38 is not changed, and the distance difference between the third terminal 33 and the seventh terminal 37 or the eighth terminal 38 is also decreased, which is the mutual influence between the first channel and the second channel; the distance from the sixth terminal 36 to the fifth terminal 35 is increased, the distance from the sixth terminal 36 to the fourth terminal 34 is not changed, or the distance difference is reduced, the same also applies to the fourth terminal 34 and the fifth terminal 35 by the third terminal 33, the first channel to the third channel are mutually influenced, because the fourth terminal 34 is lowered, the distance difference is actually increased, and the inverse-positive characteristic is poor, but because the first channel and the third channel are far away originally, the crosstalk margin is sufficient, and the requirements (for solving the crosstalk of the second channel and the third channel, the characteristics of the first channel and the third channel are sacrificed) after adjustment are still met, the second channel and the fourth channel are improved, the first channel and the fourth channel are far away, too much consideration is not needed, and the original margin is sufficient, so the design can reduce the crosstalk of the conductive terminal 30 of the RJ connector 100, optimize the high-frequency characteristic, and perform the test under the condition that the high-frequency is close to 100MHz, the obtained near-end crosstalk is not more than-43 dB, and the standard of the near-end crosstalk of Cat 5E can be met through a high-frequency test.

The above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, and the understanding of the present specification should be based on the technical people in the related art, for example, the descriptions of the directions such as "front", "back", "left", "right", "up", "down", etc., although the present specification has described the present invention in detail with reference to the above embodiments, the ordinary skilled in the art should understand that the technical people in the related art can still modify or substitute the present invention, and all the technical solutions and modifications thereof that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. The utility model provides a RJ connector, its includes insulator and accommodates in a plurality of conductive terminal (30) of insulator, insulator is equipped with spliced eye (11), conductive terminal (30) include fixed part (301), follow contact arm (302) that fixed part (301) extended and follow fixed part (301) extend insulator's welding foot (303), its characterized in that: the contact arm (302) of the conductive terminal (30) extends forwards and upwards from the fixing part (301) into the plug hole (11), and the contact arm (302) of the conductive terminal (30) is bent upwards and backwards from the fixing part (301) and extends into the plug hole (11).

2. The RJ connector of claim 1, wherein: the conductive terminals (30) comprise a first terminal (31), a second terminal (32), a third terminal (33), a fourth terminal (34), a fifth terminal (35), a sixth terminal (36), a seventh terminal (37) and an eighth terminal (38) which are sequentially arranged along the horizontal direction.

3. The RJ connector of claim 2, wherein: the contact arms (302) of the first terminal (31), the second terminal (32), the fourth terminal (34) and the sixth terminal (36) extend forwards and upwards from the fixing part (301) into the plug hole (11), and the contact arms (302) are arranged into an upwards-protruding arc-shaped structure.

4. The RJ connector of claim 2, wherein: the contact arms (302) of the third terminal (33), the fifth terminal (35), the seventh terminal (37) and the eighth terminal (38) are bent upwards and backwards from the fixing part (301) and extend into the insertion hole (11), and the contact arms (302) are arranged in an oblique line structure.

5. The RJ connector of claim 1, wherein: the contact arms (302) of the conductive terminals (30) are aligned with the conductive terminals (30) in a horizontal and transverse arrangement order.

6. The RJ connector of claim 1, wherein: the insulating body comprises an insulating seat (10) and a supporting block (20) assembled in the insulating seat (10), and the conductive terminals (30) are assembled or insert-molded on the supporting block (20) to form a terminal module.

7. The RJ connector of claim 6, wherein: the upper surface of the supporting block (20) is provided with a plurality of first terminal grooves (21) which are arranged at intervals in the transverse direction, and at least part of the contact arms (302) are partially accommodated in the first terminal grooves (21).

8. The RJ connector of claim 6, wherein: the lower surface of the supporting block (20) is provided with a plurality of second terminal grooves (22) which are transversely arranged at intervals, and at least part of the fixing part (301) is fixed in the second terminal grooves (22).

9. The RJ connector of claim 8, wherein: the front end of the supporting block (20) is provided with a groove (23) for connecting each second terminal groove (22) with the upper surface of the supporting block (20), an arc-shaped bending part (305) is arranged between the fixing part (301) and the contact arm (302), and the bending parts (305) are accommodated in the groove (23) one by one.

10. The RJ connector of claim 6, wherein: the rear end of the supporting block (20) is provided with a plurality of convex parts (25) which are spaced from each other left and right and a first limiting groove (261) which is positioned between the adjacent convex parts (25), the rear end of each convex part (25) is concavely provided with a second limiting groove (262), and the welding pins (303) are arranged in two rows along the front-back direction and are transversely positioned by the first limiting groove (261) and the second limiting groove (262) respectively.

11. The RJ connector of claim 1, wherein: the insulation body is characterized by further comprising a pair of metal fixing pieces (40), fixing grooves (13) are formed in two side faces of the insulation body, and each fixing piece (40) comprises an inserting portion (41) which is inserted and fixed into the corresponding fixing groove (13) forwards and a fixing pin (42) which extends out of the insulation body downwards.