CN114142286A

CN114142286A - Cable connector and connector assembly

Info

Publication number: CN114142286A
Application number: CN202010924023.7A
Authority: CN
Inventors: 杨文初; 唐辉; 柯英豪; 刘振兴; 李杭
Original assignee: Amphenol Assembletech Xiamen Co Ltd
Current assignee: Amphenol Assembletech Xiamen Co Ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2022-03-04

Abstract

The invention discloses a cable connector which comprises a shell, a conductive terminal group arranged in the shell and a cable electrically connected with the conductive terminal group. The front end of the shell is provided with an inserting groove, the conductive terminal group comprises a first terminal row and a second terminal row which are symmetrically arranged on the upper side and the lower side of the inserting groove, and the first terminal row and the second terminal row are composed of a plurality of conductive terminals. The conductive terminal comprises a main body part, a contact part formed by bending the front end of the main body part and a welding part formed by extending the rear end of the main body part backwards, and the welding part of the first terminal row and the welding part of the second terminal row are arranged in parallel. The pitch between the soldering portions of the first terminal row and the soldering portions of the second terminal row is 1 to 2.5 times the minimum pitch between the contact portions of the first terminal row and the contact portions of the second terminal row. The cable connector provided by the invention can meet the requirement of low size, simultaneously avoid signal interference among the terminal rows to the maximum extent and ensure the signal integrity of the product.

Description

Cable connector and connector assembly

Technical Field

The present invention relates to the field of connector technologies, and in particular, to a cable connector and a connector assembly.

Background

The traditional PCB has more and more limitation on signal transmission, and because the PCB is greatly attenuated in time and the signal integrity is affected, the attenuation needs to be reduced by adopting a connector mode. The connector products used at present usually have a problem of high height, and are not suitable for being used around the server chip, so a low-profile connector capable of being placed under the heat sink needs to be developed to fully utilize the space of the server motherboard. However, if the connector is designed to be too short, signal interference between the upper and lower rows of terminal rows will occur, which may affect the signal integrity of the product. It is imperative to develop a connector product that ensures both low profile size requirements and signal integrity.

Disclosure of Invention

In view of the technical problems in the background art, it is an object of the present invention to provide a cable connector and a connector assembly that can ensure both low profile and signal integrity.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a cable connector comprises a shell, a conductive terminal group arranged in the shell and a cable electrically connected with the conductive terminal group. The front end of the shell is provided with an inserting groove, the conductive terminal group comprises a first terminal row and a second terminal row which are symmetrically arranged on the upper side and the lower side of the inserting groove, and the first terminal row and the second terminal row are composed of a plurality of conductive terminals arranged along the width direction of the inserting groove. The conductive terminal comprises a main body part, a contact part formed by bending the front end of the main body part and a welding part formed by extending the rear end of the main body part backwards, and the welding part of the first terminal row and the welding part of the second terminal row are arranged in parallel. The pitch between the soldering portions of the first terminal row and the soldering portions of the second terminal row is 1 to 2.5 times the minimum pitch between the contact portions of the first terminal row and the contact portions of the second terminal row.

Further, the lock catch device also comprises a lock catch piece which is arranged on the top of the shell.

The cable lock further comprises a pull belt, one side of the shell, which is close to the cable, is provided with a pull belt hole, the lock catch piece is positioned above the left side of the pull belt hole, and one end of the pull belt penetrates through the pull belt hole and is connected with the lock catch piece.

The shell comprises a front shell and a rear shell clamped at the rear end of the front shell, and the pull belt hole is formed in the rear shell.

Preferably, the top of the rear housing extends upward to form a protruding portion, and the drawstring hole is formed in the protruding portion and penetrates through the protruding portion in the front-rear direction.

The utility model discloses a back shell, including the epitheca and the inferior valve, the left and right sides of the bottom surface of epitheca respectively downwardly extending forms two first joint pieces, the confession has been seted up respectively to the left and right sides of the top surface of inferior valve the first joint hole that first joint piece card was gone into. The wall surface of the first clamping hole is provided with a first clamping hole, and a first clamping protrusion used for being clamped with the first clamping hole is arranged on the corresponding position of the outer surface of the first clamping block.

Furthermore, the left and right sides on the rear end face upper portion of preceding shell extends backward respectively and forms two second joint pieces, the left and right sides of the preceding terminal surface of epitheca is seted up respectively and is supplied the second joint hole that second joint piece card was gone into. The second clamping block is provided with a second clamping hole, and a second clamping protrusion used for being clamped with the second clamping hole is arranged on the corresponding position of the inner wall surface of the second clamping hole.

Furthermore, a cavity is formed in the shell, and a plastic fixing piece is fixedly arranged in the cavity. The plastic fixing part comprises a first plastic fixing part for fixing the first terminal row and a second plastic fixing part for fixing the second terminal row. And clamping blocks are respectively arranged on the two side surfaces of the first plastic fixing piece and the second plastic fixing piece, and the clamping blocks are clamped with the second clamping holes.

Preferably, in order to better realize the positioning, a first positioning column and a first positioning hole are arranged at the bottom of the first plastic fixing part, and a second positioning column and a second positioning hole are arranged at corresponding positions on the top of the second plastic fixing part. The first positioning column and the second positioning column are respectively inserted into the second positioning hole and the first positioning hole.

Furthermore, the front end face of the lower shell extends forwards to form a convex block, and the lower part of the rear end face of the front shell is provided with a slot matched with the convex block in shape. One to a plurality of third clamping holes are formed in the bottom of the slot, and one to a plurality of third clamping bulges used for being clamped with the third clamping holes are formed in corresponding positions of the bottom of the convex block.

Further, the front shell comprises a body part, an insertion part formed by extending forwards from the front end face of the body part, and a locking part formed by extending upwards and forwards from the top of the body part. The inserting groove is arranged at the front end of the inserting part, and a first limiting slot is arranged between the part, extending out of the body, of the lock catch part and the inserting part. The top of the lock catch part is provided with a lock catch groove, the lock catch piece is installed in the lock catch groove, two guide positioning columns formed by extending forwards from the front end face of the body part are arranged below the inserting part, and a second limiting slot is arranged between the inserting part and the guide positioning columns.

Preferably, in order to better realize the insertion fit with the plate end connector, the front end surface of the insertion part extends forwards between the two guiding and positioning columns to form a limiting block.

The invention also discloses a connector assembly, which comprises the cable connector and the plate end connector, wherein the cable connector is the cable connector.

Furthermore, the board end connector comprises an insulating main body, a tongue piece and a shell, wherein the tongue piece is fixedly arranged in the insulating main body and is used for being in contact fit with a conductive terminal group of the cable connector, and the shell is sleeved on the outer side of the insulating main body.

Preferably, in order to better realize the insertion and the matching with the cable connector and enable the matched connector assembly to be more stable and reliable, the bottom of the shell is bent to form a limiting groove, the front end of the shell of the cable connector is provided with a limiting block matched with the limiting groove in shape, and the limiting block is inserted into the limiting groove to realize the positioning.

The invention has the following beneficial effects:

1. the cable connector can meet the requirement of low size, so that the overall height of the assembled connector assembly is less than 8mm, the cable connector can be applied to the bottom of a server radiator, the space of a mainboard is saved, the signal interference among terminal rows can be avoided to the maximum extent, and the signal integrity of a product is ensured;

2. the shell is divided into a front shell and a rear shell, the rear shell is designed into a split type, the whole structure is reasonable in design, parts are compactly matched, and the assembled connector is small in size, stable and firm and good in contact reliability;

3. the cable connector can be guided by arranging the guide positioning columns and the guide holes, the product can be prevented from being stressed to twist, the reliability of the product is improved, and the connector assembly is more stable and reliable after being matched in an inserting mode by arranging the limiting blocks and the limiting grooves.

Drawings

Fig. 1 is a perspective view of a cable connector.

Fig. 2 is an exploded view of the part of fig. 1.

Fig. 3 is a front view of the cable connector.

Fig. 4 is a side view of the cable connector.

Fig. 5 is a schematic top view of the cable connector.

Fig. 6 is a schematic sectional view taken along the direction a-a in fig. 5.

Fig. 7 is a positional relationship diagram of the first terminal row and the second terminal row.

Fig. 8 is a perspective view of the front case.

Fig. 9 is a schematic perspective view of the upper case.

Fig. 10 is a perspective view illustrating the lower case.

Fig. 11 is a perspective view of the lower case at another angle.

Fig. 12 is a schematic structural view of the plastic fastener.

Fig. 13 is a perspective view of the connector assembly.

Fig. 14 is a perspective view of the plate end connector.

Fig. 15 is a graph of impedance measurement data for the connector assembly.

Fig. 16 is a graph of insertion loss measurement data for a connector assembly.

Fig. 17 is a graph of performance measurement data for near-end crosstalk between high-speed pairs of connector assemblies.

Fig. 18 is a graph of performance measurement data for far end crosstalk between high speed pairs of connector assemblies.

Description of the main component symbols: 1. a housing; 10. inserting grooves; 100. a drawstring hole is formed; 101. a first limit slot; 102. a second limit slot; 11; a front housing; 111. a second clamping block; 112. a second card hole; 113. a slot; 114. a third clamping hole; 115. a body portion; 116. an insertion portion; 117. a locking part; 118. guiding the positioning column; 119. a limiting block; 12. an upper shell; 120. a protrusion; 121. a first clamping block; 122. a first snap projection; 123. a second clamping hole; 124. a second snap projection; 125. injecting glue holes; 13. a lower case; 131. a first clamping hole; 132. a first card hole; 133. a bump; 134. a fourth snap projection; 2. a conductive terminal group; 20. a conductive terminal; 201. a main body portion; 202. a contact portion; 203. welding the part; 21. a first terminal row; 22. a second terminal row; 3. a cable; 4. a fastener; 5. pulling the belt; 6. a plastic fixing member; 60. a clamping block; 61. a first plastic fixing member; 611. a first positioning post; 62. a second plastic fixing member; 621. a second positioning column; 7. an inner mold; 8. a plate end connector; 81. an insulating body; 82. a tongue piece; 83. a housing; 830. a limiting groove; h: a pitch between the solder portions of the first terminal row and the solder portions of the second terminal row; h: the contact portions of the first terminal row and the contact portions of the second terminal row have a minimum pitch therebetween.

Detailed Description

The invention is further described with reference to the following drawings and detailed description.

Example one

As shown in fig. 1-12, a cable connector includes a housing 1, a conductive terminal set 2 disposed inside the housing 1, a cable 3 electrically connected to the conductive terminal set 2, a locking member 4 mounted on the top of the housing 1, and a pull strip 5 connected to the locking member 4. The front end of the housing 1 is provided with an insertion groove 10, the conductive terminal group 2 includes a first terminal row 21 and a second terminal row 22 which are symmetrically arranged on the upper and lower sides of the insertion groove 10, and the first terminal row 21 and the second terminal row 22 are composed of a plurality of conductive terminals 20 which are arranged along the width direction of the insertion groove 10. The conductive terminal 20 includes a main body 201, a contact portion 202 bent from the front end of the main body 201, and a soldering portion 203 extending rearward from the rear end of the main body 201, and the soldering portion 203 of the first terminal row 21 and the soldering portion 203 of the second terminal row 22 are arranged in parallel to each other. The pitch H between the soldering portions 203 of the first terminal row 21 and the soldering portions 203 of the second terminal row 22 is 1 to 2.5 times the minimum pitch H between the contact portions 202 of the first terminal row 21 and the contact portions 202 of the second terminal row 22.

Preferably, the housing 1 is formed with a drawstring hole 100 at a side close to the cable 3, the locking member 4 is positioned at an upper left side of the drawstring hole 100, and one end of the drawstring 5 passes through the drawstring hole 100 and is connected to the locking member 4.

The casing 1 comprises a front casing 11 and a rear casing clamped at the rear end of the front casing 11, wherein the rear casing comprises an upper casing 12 and a lower casing 13. Preferably, a protrusion 120 is formed to extend upward from the top of the upper case 12, and the drawstring hole 100 is formed on the protrusion 120 to penetrate the protrusion 120 in the front-rear direction.

The left and right sides of the bottom surface of the upper shell 12 respectively extend downwards to form two first clamping blocks 121, and the left and right sides of the top surface of the lower shell 13 are respectively provided with first clamping holes 131 for the first clamping blocks 121 to be clamped in. A first clamping hole 132 is formed in the wall surface of the first clamping hole 131, and a first clamping protrusion 122 for clamping with the first clamping hole 132 is formed on the corresponding position of the outer surface of the first clamping block 121.

The left and right sides of the upper portion of the rear end surface of the front shell 11 respectively extend backwards to form two second clamping blocks 111, and the left and right sides of the front end surface of the upper shell 12 are respectively provided with second clamping holes 123 for the second clamping blocks 111 to be clamped in. The second clamping block 111 is provided with a second clamping hole 112, and a second clamping protrusion 124 for clamping with the second clamping hole 112 is arranged on the corresponding position of the inner wall surface of the second clamping hole 123.

The inside of casing 1 is seted up the cavity, and the inside of cavity sets firmly plastic mounting 6. The plastic mount 6 comprises a first plastic mount 61 for mounting the first terminal row 21 and a second plastic mount 62 for mounting the second terminal row 22. Two side surfaces of the first plastic fixing piece 61 and the second plastic fixing piece 62 are respectively provided with a fixture block 60, and the fixture block 60 is clamped with the second clamping hole 112. Preferably, the first plastic fixing member 61 is provided with a first positioning post 611 and a first positioning hole (not shown) at the bottom, and the second plastic fixing member 62 is provided with a second positioning post 621 and a second positioning hole (not shown) at the corresponding position at the top. The first positioning post 611 and the second positioning post 621 are respectively inserted into the second positioning hole and the first positioning hole.

The cavity is internally provided with an inner mold 7 for coating a welding spot between the cable 3 and the welding part 203 of the conductive terminal group 2, and the side wall of the upper shell 12 is provided with a glue injection hole 125 for injection molding of the inner mold 7. The front end of the lower shell 13 extends forward to form a protrusion 133, and the lower portion of the rear end of the front shell 11 is provided with a slot 113 adapted to the shape of the protrusion 133. One or more third locking holes 114 are formed at the bottom of the slot 113, and one or more third locking protrusions 134 for locking with the third locking holes 114 are formed at corresponding positions at the bottom of the protrusion 133.

The front housing 11 includes a main body 115, an insertion portion 116 formed to extend forward from a front end surface of the main body 115, and a locking portion 117 formed to extend upward and forward from a top of the main body 115. The inserting groove 10 is arranged at the front end of the inserting part 116, and the locking part 117 extends out of the body part 115 and has a first limit inserting groove 101 between the inserting part 116. The top of the locking part 117 is provided with a locking groove, and the locking piece 4 is arranged in the locking groove. Preferably, the locking portions 117 are forward beyond the insertion portion 116.

Two guiding positioning columns 118 formed by extending forwards from the front end face of the main body part 115 are arranged below the inserting part 116, and a second limiting slot 102 is arranged between the inserting part 116 and the guiding positioning columns 118. Preferably, pilot locator post 118 is advanced beyond insert 116. Preferably, the front end surface of the insertion portion 116 extends forward between the two guiding positioning posts 118 to form a stop 119.

Example two

As shown in fig. 13 and 14, a connector assembly includes a cable connector and a board end connector 8, wherein the cable connector is the cable connector in the first embodiment. The board end connector 8 includes an insulating body 81, a tongue 82 fixed inside the insulating body 81 and adapted to contact with the conductive terminal set of the cable connector, and a housing 83 covering the insulating body 81. Preferably, the bottom of the housing 83 is bent to form a limiting groove 830, and the limiting block 119 at the front end of the housing 1 of the cable connector is inserted into the limiting groove 830 to achieve positioning.

In the present embodiment, the thickness of the tongue piece 82 of the board-end connector 8 is 2mm, the minimum distance H between the contact portions 202 of the first terminal row 21 and the contact portions 202 of the second terminal row 22 of the cable connector is 1.4 to 2mm, and the distance H between the soldering portions 203 of the first terminal row 21 and the soldering portions 203 of the second terminal row 22 is 1 to 2.5 times H. The above values are merely for explaining the relationship between the thickness of the tongue 82 of the plate end connector 8 and h, and the thickness of the tongue 82 may be any other value.

When the connector assembly is unlocked, the pull belt 5 is pulled, the pull belt 5 pulls the locking piece 4 to enable the two clamping protrusions on the top of the locking piece 4 to be separated from the two clamping holes of the metal shell 83, the cable connector is pulled to enable the cable connector to be separated from the plate end connector 8, and unlocking is completed.

As shown in fig. 15-18, which are graphs of performance test data for connector assemblies, it was found that the connector assemblies of the present invention performed well in terms of impedance, insertion loss, near end crosstalk, and far end crosstalk.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A cable connector comprises a shell, a conductive terminal group arranged in the shell and a cable electrically connected with the conductive terminal group, and is characterized in that: the front end of the shell is provided with an insertion groove, the conductive terminal group comprises a first terminal row and a second terminal row which are symmetrically arranged on the upper side and the lower side of the insertion groove, the first terminal row and the second terminal row are composed of a plurality of conductive terminals arranged along the width direction of the insertion groove, each conductive terminal comprises a main body part, a contact part formed by bending the front end of the main body part and a welding part formed by extending the rear end of the main body part backwards, the welding parts of the first terminal row and the second terminal row are arranged in parallel, and the distance between the welding parts of the first terminal row and the second terminal row is 1-2.5 times of the minimum distance between the contact part of the first terminal row and the contact part of the second terminal row.

2. A cable connector as claimed in claim 1, wherein: the lock catch is arranged on the top of the shell.

3. A cable connector as claimed in claim 2, wherein: the cable lock is characterized by further comprising a pull belt, one side of the shell, which is close to the cable, is provided with a pull belt hole, the lock catch piece is positioned above the left side of the pull belt hole, and one end of the pull belt penetrates through the pull belt hole and is connected with the lock catch piece.

4. A cable connector according to claim 3, wherein: the shell comprises a front shell and a rear shell clamped at the rear end of the front shell, and the pull belt hole is formed in the rear shell.

5. A cable connector according to claim 4, wherein: the top of the rear shell extends upwards to form a protruding part, and the drawstring hole is formed in the protruding part and penetrates through the protruding part in the front-back direction.

6. A cable connector according to claim 4, wherein: the backshell include epitheca and inferior valve, the left and right sides of the bottom surface of epitheca downwardly extending respectively forms two first joint pieces, the confession has been seted up respectively to the left and right sides of the top surface of inferior valve the first joint hole that first joint piece card was gone into, first calorie of hole has been seted up on the wall in first joint hole, be equipped with on the corresponding position of surface of first joint piece be used for with the first card of first joint hole joint is protruding.

7. A cable connector according to claim 6, wherein: the left and right sides on the rear end face upper portion of preceding shell extends backward respectively and forms two second joint pieces, the confession has been seted up respectively to the left and right sides of the preceding terminal surface of epitheca the second joint hole that second joint piece card was gone into, the second joint piece on seted up second card hole, be equipped with on the corresponding position of internal face in second joint hole be used for with the second card of second card hole joint is protruding.

8. A cable connector according to claim 7, wherein: the cavity has been seted up to the inside of casing, the inside of cavity has set firmly the plastic mounting, the plastic mounting including being used for fixing first plastic mounting that first terminal was arranged and being used for fixing the second plastic mounting that second terminal was arranged, be equipped with the fixture block on the both sides face of first plastic mounting and second plastic mounting respectively, the fixture block with second card hole looks joint.

9. A cable connector according to claim 8, wherein: the bottom of the first plastic fixing part is provided with a first positioning column and a first positioning hole, the corresponding position of the top of the second plastic fixing part is provided with a second positioning column and a second positioning hole, and the first positioning column and the second positioning column are respectively inserted into the second positioning hole and the first positioning hole.

10. A cable connector according to claim 6, wherein: the front end face of the lower shell extends forwards to form a convex block, a slot matched with the convex block in shape is formed in the lower portion of the rear end face of the front shell, one to multiple third clamping holes are formed in the bottom of the slot, and one to multiple third clamping protrusions used for being clamped with the third clamping holes are formed in the corresponding positions of the bottom of the convex block.

11. A cable connector according to claim 4, wherein: the front shell comprises a body part, an insertion part and a lock catch part, wherein the insertion part is formed by extending the front end face of the body part forwards, the lock catch part is formed by extending the top of the body part upwards and forwards, the insertion groove is formed in the front end of the insertion part, a first limiting slot is formed between the part, extending out of the body part, of the lock catch part and the insertion part, the top of the lock catch part is provided with a lock catch groove, the lock catch part is installed in the lock catch groove, two guiding positioning columns are formed by extending the front end face of the body part forwards below the insertion part, and a second limiting slot is formed between the insertion part and the guiding positioning columns.

12. A cable connector according to claim 11, wherein: the front end surface of the insertion part extends forwards between the two guiding positioning columns to form a limiting block.

13. A connector assembly comprising a cable connector and a plate end connector, the cable connector being as claimed in any one of claims 1 to 12.

14. A connector assembly according to claim 13, wherein: the plate-end connector comprises an insulating main body, a tongue piece and a shell, wherein the tongue piece is fixedly arranged in the insulating main body and is used for being in contact fit with a conductive terminal group of the cable connector, and the shell is sleeved on the outer side of the insulating main body.

15. A connector assembly according to claim 14, wherein: the bottom of the shell is bent to form a limiting groove, the front end of the shell of the cable connector is provided with a limiting block matched with the limiting groove in shape, and the limiting block is inserted into the limiting groove to achieve positioning.