CN111244699A - High-speed electric connector - Google Patents

Abstract

A high-speed electrical connector includes a plurality of sheet-shaped insulating supports, each of which is stacked in one direction, each insulating support is fixed with a plurality of signal terminals, and the plurality of signal terminals at least include a pair of A pair of differential signal terminals, each signal terminal includes a tail for connecting to a circuit board, a contact for mating with a mating device, and a body for interconnecting the tail and the contact, the body being the The signal terminal forms a signal path between the tail portion and the contact portion, the sheet-shaped insulating support member forms a thin-shaped portion at the connection position between the body portion and the tail portion, and the two adjacent sheet-shaped insulating support members are located in the thin-shaped portion. Air grooves are formed in place for better impedance continuity and signal integrity.

Description

A high-speed electrical connector

【Technical field】

The embodiments of the present application relate to the field of communication transmission, and in particular, to a high-speed electrical connector.

【Background technique】

For related prior art, please refer to this type of connector module disclosed in Chinese Utility Model Patent No. CN208820157U, including a connector module including a conductive shell, a terminal assembly fixed to the conductive shell through assembly, and a connector module. The terminal assembly realizes the electrical connection of the cable, the solder joint protection module covering the connection position between the terminal assembly and the cable, the outer module covering the conductive shell, and the sheathing on the cable. Thermal casing. The connector module is used for docking and fixing with a circuit board. There are several terminal assemblies, and each terminal assembly includes an insulating body and a pair of signal terminals, and the pair of signal terminals are fixed to the insulating body by injection molding. There are several groups of the cables, and each group of cables includes two signal wires and one ground wire. During assembly, the two signal wires of each group of cables are in contact with a corresponding pair of signal terminals, and the ground wires of the cables are in corresponding contact with the ground plane formed on the conductive housing. The solder joint protection module and the outer module are formed by integral injection molding.

However, in the connector module in the prior art, in the process of integrally injection molding the solder joint protection module and the outer module, due to the injection pressure and high temperature, the ground wire will be skewed and displaced and short-circuited with the signal wire. In addition, problems such as poor electrical performance of withstand voltage and current resistance arise.

In view of this, it is necessary to provide a new high-speed electrical connector to solve the above technical problems.

[Content of the invention]

The purpose of this application is to provide a new high-speed electrical connector with better impedance continuity and signal integrity.

In order to achieve the above object, the application realizes through the following technical solutions:

A high-speed electrical connector includes a plurality of sheet-shaped insulating supports, each of which is stacked in one direction, each insulating support is fixed with a plurality of signal terminals, and the plurality of signal terminals at least include a pair of A pair of differential signal terminals, each signal terminal includes a tail for connecting to a circuit board, a contact for mating with a mating device, and a body for interconnecting the tail and the contact, the body being the The signal terminal forms a signal path between the tail portion and the contact portion, the sheet-shaped insulating support member forms a thin-shaped portion at the connection position between the body portion and the tail portion, and the two adjacent sheet-shaped insulating support members are located in the thin-shaped portion. position to form air grooves.

Further, the surface of the body portion of at least one of the signal terminals is exposed to the air, and an air groove is formed on the corresponding insulating support member. The air groove has the same extension trend as the body portion of the corresponding signal terminal. Air slot communication setting.

Further, along the insertion and removal direction, the width of the air groove is wider than that of the body portion where the signal terminal is located at the position of the air groove.

Further, the signal terminals are not exposed to the air grooves.

Further, each of the sheet-shaped insulating support members is formed with an air channel passing through at a position adjacent to the signal terminal, and the air channel is not communicated with the air groove.

Further, the extension trend of the air channel and the body portion of the adjacent signal terminals is the same, and the body portion of at least one of the signal terminals includes a horizontal portion extending horizontally, a vertical portion extending vertically, and connecting the horizontal portion and the vertical portion. an inclined part of the part, the air channel includes a part adjacent to the horizontal part, a part adjacent to the vertical part, and a part adjacent to the inclined part, the air groove includes at least partially exposing the horizontal part to the A portion in the air, a portion at least partially exposing the vertical portion to the air, and a portion exposing the inclined portion at least partially to the air.

Further, four signal terminals are fixed on the insulating support, two adjacent signal terminals located above form a pair of signal terminals, and two adjacent signal terminals located below form a pair of signal terminals. The high-speed electrical connector also includes an insulating body, the plurality of sheet-shaped insulating supports are fixed to the insulating body, and the front end of the insulating body forms two opening-shaped first slots and second slots, the first slots and The second slots are arranged at intervals along the vertical direction, the contact portions of the two upper signal terminals protrude into the first slot, and the contact portions of the two lower signal terminals protrude into the second slot.

Further, the insulating body and a plurality of sheet-like insulating supports fixed with signal terminals form a module, and the high-speed connector further includes a shielding cage, the shielding cage is covered on the periphery of the module, and the shielding cage The front end is formed with an insertion opening corresponding to the first slot and the second slot, along the insertion direction, the insertion opening and the front end of the insulating body are spaced a certain distance, and the insertion opening of the shielding cage and the front end of the insulating body are formed Insert space.

Further, the shielding cage includes a rear end plate located at the rear end, a heat dissipation area is formed between at least a partial position of the rear end surface of the module and the rear end plate, and a heat dissipation hole is formed through the rear end plate corresponding to the position of the heat dissipation area.

Further, the shielding cage further includes two partition plates, the two partition plates are arranged at intervals along the up-down direction to partition the insertion space into three regions, and the high-speed electrical connector further includes a light guide and a light partition, Two supporting feet are formed at the rear end of the light guide, two light guide columns are formed at the front end of the light guide, and the light guide is located in the middle area of the two partition plates Clamping, the light shielding member is fixed on the two light guide columns, the front end surfaces of the two light guide columns are exposed, and the surrounding areas of the two light guide columns are covered, and the two supporting feet are clamped on the two light guide columns. On both sides of the module, the light-shielding members are formed with ventilation holes that pass through in the front and rear directions, the modules are provided with two and are arranged adjacently, and the light guide members are fixed on each of the modules. The shielding cage includes a blocking plate sandwiched between the two modules, and the blocking plate separates the light guides of the two modules over the entire length of the light guide.

Compared with the prior art, the present application has the following beneficial effects: compared with the existing design of high-speed electrical connectors, it has better impedance continuity and signal integrity.

【Description of drawings】

1 is a perspective view of a high-speed electrical connector of the present application;

Figure 2 is a schematic perspective view of the high-speed electrical connector shown in Figure 1 from another angle;

3 is a partially exploded perspective view of the high-speed electrical connector of the present application, which shows a schematic perspective view of a part of the structure of the shielding cage when the module is separated;

Fig. 4 is a partial perspective exploded view of the high-speed electrical connector of the present application;

Fig. 5 is a further perspective exploded view of the high-speed electrical connector shown in Fig. 4;

6 is a schematic perspective view of the connector portion of the high-speed electrical connector of the present application;

Figure 7 is a further exploded perspective view of the connector portion shown in Figure 6;

FIG. 8 is a side view of a sheet-shaped insulating supporter with signal terminals fixed to the high-speed electrical connector of the present application;

FIG. 9 is a cross-sectional view of a second embodiment of the high-speed electrical connector of the present application. The cross-sectional position of FIG. 9 is shown in the position of line A-A in the embodiment of FIG. 1 . The embodiment in FIG. 1 is slightly different, and the structure of the light guide is not shown in FIG. 9. These structures are not important in FIG. 9. The structure shown in FIG. 9 (the second embodiment of the high-speed electrical connector of the present application) is highlighted A heat dissipation area is formed between the rear end plate of the shielding cage and the rear end surface of the module, and the position of the rear end plate corresponding to the heat dissipation area is penetrated to form a heat dissipation hole structure;

Figure 10 is a side view of Figure 9;

FIG. 11 is an enlarged view of the structure within the dotted circle in FIG. 1 .

【Detailed ways】

It should be noted that the embodiments in the application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

In the description of the application, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection , or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the application can be understood in specific situations.

In the description of the application, it is to be understood that the terms "comprising" and "having" as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, eg, a process, method comprising a series of steps or units The processes, systems, products or devices are not necessarily limited to those steps or units expressly listed, but may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

In addition, for the accuracy of the description of this application, please refer to FIG. 1 for all directions involved in this application, wherein the X-axis extension direction is the left-right direction (wherein the positive direction of the X-axis is right), and the Y-axis extension direction is the front-rear direction (also It is the insertion and removal direction, in which the positive direction of the Y axis is the rear), and the extension direction of the Z axis is the up and down direction (the positive direction of the Z axis is up).

Please refer to FIG. 1 to FIG. 11 , which discloses a high-level electrical connector of the present application, including a connector part (not numbered) and a shielding cage 4 . The connector part is correspondingly electrically connected to the docking circuit board, and the shielding cage 4 The cover is arranged on the periphery of the connector part, and the shielding cage 4 itself is fixedly connected with the docking circuit board.

Referring to FIG. 4 to FIG. 7 , the connector portion includes an insulating body 3 , a plurality of sheet-shaped insulating support members 1 , and a plurality of signal terminals 2 , and the plurality of signal terminals 2 include at least one differential signal terminal pair. The insulating body 3 is made of insulating material by injection molding, and the front end of the insulating body 3 forms two opening-shaped first slots 31 and second slots 32 . The first slot 31 and the second slot 32 spaced vertically,

Referring to FIG. 4 to FIG. 8 , each of the sheet-like insulating support members 1 is generally a flat sheet body, and is made of insulating material by injection molding. Four signal terminals 2 are fixed in each of the sheet-shaped insulating support members 1 , and each of the signal terminals 2 includes a tail portion 21 that protrudes downwardly out of the sheet-shaped insulating support member 1 and is used for connecting to the circuit board. A contact portion 22 protruding out of the sheet-like insulating support 1 and used for mating with the docking device, and a body portion 23 connecting the tail portion 21 and the contact portion 22 to each other, the body portion 23 is the signal The terminal 2 forms a signal path between the tail portion 21 and the contact portion 22 .

Referring to FIGS. 3 to 7 , the plurality of sheet-shaped insulating supports 1 are stacked along the left-right direction and then inserted and fixed to the insulating body 3 from front to back, and the same sheet-shaped insulating support 1 is located above The contact portions 22 of the two signal terminals 2 protrude into the first slot 31 , and the contact portions 22 of the two signal terminals 2 located below protrude into the second slot 32 . In this application, the insulating body 3 and the plurality of sheet-shaped insulating support members 1 are collectively referred to as insulating members (not numbered). The insulating body 3 and the plurality of sheet-like insulating supports 1 on which the signal terminals 2 are fixed are collectively referred to as a module (not numbered).

Please refer to FIG. 3 to FIG. 7 , the connector part of the high-speed electrical connector shown in this application further includes insulating fasteners 8 , and the insulating fasteners 8 are fastened on both sides of the insulating body 3 from front to back, And a plurality of sheet-shaped insulating support members 1 are framed (enclosed therein). In this application, the insulating fastener 8 is located below the rear end of the module.

Please refer to FIG. 1 to FIG. 7 , the shielding cage 4 is made of a metal plate, and the front end of the shielding cage 4 is formed with an insertion port 41 corresponding to the first slot 31 and the second slot 32 , along the insertion direction , the insertion opening 41 of the shielding cage 4 and the front edge of the insulating body 3 are separated by a certain distance to form an insertion space 40 . The shielding cage 4 includes a top plate 401 , a bottom plate 401 located opposite the top plate 401 and located directly below the top plate 401 , two side plates 403 connecting the top plate 401 and the bottom plate 402 on both sides, and a rear end plate 42 at the rear end. The top plate 401 , the bottom plate 402 , the two side plates 403 and the rear end plate 42 form a metal cage with a substantially rectangular parallelepiped opening forward, and the insertion opening 41 is formed in the front. An opening-like structure is formed between the rear edge position of the bottom plate 402 and the rear end plate 42 , so that the end position of the insertion space 40 is communicated with the outside world downward. The rear end position protrudes downwardly out of the shielding cage 4 .

Please refer to FIG. 3 to FIG. 5 , the shielding cage 4 further includes two partition plates 44 , and the two partition plates 44 separate the insertion space 40 into three areas stacked in the up-down direction. The first slot 31 corresponds to the upper area of the three areas, and the second slot 32 corresponds to the lower area of the three areas. The high-speed electrical connector further includes a light guide member 5, the light guide member 5 extending longitudinally along the insertion and extraction direction, and the light guide member 5 is clamped between the two partition plates 44 (that is, the the middle of the three regions). The rear end edges of the two partition plates 44 are correspondingly inserted and fixed in the insulating body 3 , and the left and right side edges of the two partition plates 44 are correspondingly snap-fastened to the two side plates 403 (specifically, the two side plates 403 correspond to Snap holes (not marked) are formed at the positions, and the two partition plates 44 are bent to form snap pieces (not marked), and the snap pieces are inserted into the snap holes and then bent and limited).

Referring to FIG. 3 to FIG. 5 , the light guide member 5 is limited by the two partition plates 44 along the up-down direction and the left-right direction perpendicular to the insertion and extraction direction. The spacer plate 44 is bent on both sides along the left and right directions to form limit buckles 442 , the limit buckles 442 are limited to the left and right sides of the light guide member 5 , and the limit buckles 442 are opposite to the light guide member. 5 forms precise positioning, and the size difference or tolerance between the light guide member 5 and the middle region of the three regions can be effectively absorbed by the arrangement of the limit buckle 442 . A specific example is: when the size of the light guide member 5 in the left-right direction is largely smaller than the width of the middle area of the three areas, the light guide member 5 can be accurately positioned. Another example is: when the light guide member 5 is along the When the widths (widths in the left and right directions) of various parts in the front-rear direction are inconsistent, the light guide member 5 can be easily positioned at each position in the front-rear direction.

Please refer to FIG. 3 to FIG. 7 , the high-speed electrical connector of the present application further includes a metal support member 7 . The metal support member 7 is fixed to the insulating body 3 and located in the first slot 31 and the first slot 31 of the insulating member along the up-down direction. The two slots 32 are easily located between the two partition plates 44 , and the metal support 7 limits the light guide 5 along the insertion and removal direction. Specifically, the metal support member 7 extends backward to form two mounting pieces 71 , the two mounting pieces 71 are buckled on the left and right side surfaces of the insulating body 3 , and the rear end of the light guide member 5 is backward And extending downward to form two supporting feet 51, the two supporting feet 51 are correspondingly clamped to the outer surfaces of the two mounting pieces 71 of the metal support 7, and each of the mounting pieces 71 extends in the left-right direction. At least two limit pieces 711 are formed, and the limit pieces 711 limit the light guide member 5 along the insertion and removal directions.

In addition, a cantilever-shaped elastic arm 712 is formed on each of the mounting pieces 71 slantingly extending backward, and the elastic arm 712 is in elastic contact with the shielding cage 4 , and two support pieces 72 extend backward on the metal support 7 . The two support pieces 72 are disposed opposite to each other in the up-down direction, and the two support pieces 72 are correspondingly in contact between the two spacer plates 44 . Each support piece 72 is formed with an elastic piece 721 , and the elastic piece 721 is connected to the spacer plate 44 . The spacer plate 44 is in elastic contact.

In this application, the metal support 7 is successively installed on the light guide 5 from bottom to top, and then the light guide 5 fixed with the metal support 7 is assembled between the two partition plates 44 from the back to the front, and finally The two partition plates 44 on which the metal support member 7 and the light guide member 5 are fixed are inserted and fixed on the insulating body 3 from front to back.

Please refer to FIG. 7 and FIG. 8 , each of the sheet-shaped insulating support members 1 has an air channel 11 formed therethrough at a position adjacent to the signal terminals 2 , and at least two adjacent signal terminals 2 are formed between them. There is no air channel 11 between them. In this embodiment, from bottom to top, no air channel 11 is provided between the first signal terminal 2 (A1) and the second signal terminal 2 (A2). An air passage 11 is provided between the second signal terminal 2 (A2) and the third signal terminal 2 (A3). An air passage 11 is provided between the third signal terminal 2 (A3) and the fourth signal terminal 2 (A4).

Of course, in other embodiments, it can also be designed that, from bottom to top, an air channel 11 is provided between the first signal terminal 2 (A1) and the second signal terminal 2 (A2). The air passage 11 is not provided between the second signal terminal 2 (A2) and the third signal terminal 2 (A3). An air passage 11 is provided between the third signal terminal 2 (A3) and the fourth signal terminal 2 (A4).

Of course, in other embodiments, it can also be designed that, from bottom to top, an air channel 11 is provided between the first signal terminal 2 (A1) and the second signal terminal 2 (A2). An air passage 11 is provided between the second signal terminal 2 (A2) and the third signal terminal 2 (A3). The air passage 11 is not provided between the third signal terminal 2 (A3) and the fourth signal terminal 2 (A4).

Of course, in other embodiments, the adjacent signal terminals 2 without the air channel 11 may be between the first signal terminal 2 (A1) and the second signal terminal 2 (A2) and the third one Between the signal terminal 2 (A3) and the fourth signal terminal 2 (A4).

In this application, the air channel 11 is not provided between the two adjacent signal terminals mainly to facilitate injection molding and improve the overall structural strength of the sheet-like insulating support 1 . Of course, air is provided at the adjacent position of the individual signal terminals 2 The channel 11 is again to help reduce crosstalk (air is a medium with smaller losses than the insulating material forming the sheet-like insulating support 1 ), helping to improve high frequency signal transmission.

Referring to FIG. 7 and FIG. 8 , the extension trend of the air channel 11 and the body portion 23 of the adjacent signal terminals 2 is the same. Part of the surface of the body portion 23 of each of the signal terminals 2 is exposed to the air, and an air slot 10 is formed on the corresponding sheet-like insulating support 1 . The body portion 23 of the signal terminal 2 includes a horizontal portion 231 extending horizontally, a vertical The vertical portion 232 extending straight, and the inclined portion 233 connecting the horizontal portion 231 and the vertical portion 232, the air passage 10 includes a portion adjacent to the horizontal portion 231, a portion adjacent to the vertical portion 232, and a portion adjacent to the vertical portion 232. The portion of the inclined portion 233, the air groove 10 includes a portion at least partially exposing the horizontal portion 231 to the air, a portion exposing the vertical portion 232 at least partially to the air, and the inclined portion The portion 233 is at least partially exposed to the air.

Please refer to FIG. 9 and FIG. 10 , which are the second embodiment of the high-speed electrical connector of the present application. A heat dissipation area 400 ′ is formed between the partial position of the rear end surface of the composition) and the rear end plate 42 ′, and the rear end plate 42 ′ has a heat dissipation hole 43 ′ formed therethrough corresponding to the position of the heat dissipation area 400 ′. Specifically, the rear surfaces of the plurality of sheet-shaped insulating support members 1 ′ are partially located between the rear end plate 42 ′ to form the heat dissipation area 400 ′, and more specifically, the plurality of sheet-shaped insulating support members 1 ′ The heat dissipation area 400' is formed between the rear surface of the rear surface except the part of the surface covered by the insulating fastener 8' and the rear end plate 42'. The heat dissipation area 400' and the heat dissipation holes 43' can improve the air circulation, thereby improving the heat dissipation performance. In the present application, the high-speed design of the insulating fastener 8 along the up-down direction is small, so as to make the heat dissipation area 400' larger as much as possible. In the present application, along the up-down direction, the height of the heat dissipation area 400' is not less than twice that of the insulating fastener 8', preferably, the height of the heat dissipation area 400' is not less than three times that of the insulating fastener 8'.

Please refer to FIG. 3 to FIG. 5 , the high-speed electrical connector of the present application further includes a light-shielding member 6 , and two light-guiding columns 52 are formed at the front end of the light-guiding member 5 at intervals along the left-right direction. 6 is fixed on the two light guide columns 52, the front end surfaces of the two light guide columns 52 are exposed, and the periphery of the two light guide columns 52 is covered, and a number of ventilation holes are formed on the light shielding member 6 that pass through in the front and rear directions. 60. The ventilation holes 60 connect the front end of the middle region (the region formed between the two partition plates) among the three regions with the outside for better heat dissipation.

Please refer to FIG. 1 to FIG. 5 , the high-speed electrical connector 1 of the present application has two connector parts, which are arranged adjacent to each other along the left-right direction, and the light guide is fixed on each of the connector parts. 5, the shielding cage 4 includes a blocking plate 45, the blocking plate 45 is clamped between the two connector parts, and the blocking plate 45 spaced the insertion space 40 formed by the shielding cage 4 in the left-right direction. two intervals. The blocking plate 45 separates the light guides 5 of the two connector parts over the entire length of the light guide 5 to prevent light from channeling between the light guides 5 corresponding to the two connector parts.

Please refer to FIG. 7 , FIG. 8 and FIG. 11 , each of the sheet-like insulating support members 1 has a thin portion 14 formed at the connection position between the body portion 23 and the tail portion 21 , and the two adjacent sheet-like insulating support members 1 are formed with a thin portion 14 . An air groove 140 is formed at the position of the thin portion 14 , and the air groove 140 is communicated with the air groove 10 . The width of the air groove 140 is wider than that of the body portion 23 of the signal terminal 2 at the position of the air groove 140 . The signal terminals 2 are not exposed to the air grooves 140 . The air channel 11 does not communicate with the air groove 140 . The arrangement of the air grooves 140 is beneficial to improve impedance continuity, and has a favorable influence on the signal integrity of the signal terminal 2 . In the present application, the air groove 140 is formed on one side surface of each of the sheet-shaped insulating support members 1 along the left-right direction.

The above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced. Without departing from the spirit and scope of the technical solutions of the present application.

The above descriptions are only part of the embodiments of the present application, not all of the embodiments. Any equivalent changes to the technical solutions of the present application taken by those of ordinary skill in the art by reading the description of the present application are covered by the claims of the present application. .

Claims (10)

1. A high speed electrical connector comprising:

a plurality of sheet-shaped insulating support members each disposed in a stacked arrangement in one direction,

a plurality of signal terminals are fixedly arranged in each insulating support member, the plurality of signal terminals at least comprise a pair of differential signal terminal pairs,

each signal terminal including a tail portion for connection to a circuit board, a contact portion for mating with a mating device, and a body portion interconnecting the tail and contact portions together, the body portion being such that the signal terminal forms a signal path between the tail and contact portions,

the method is characterized in that: the sheet-shaped insulating supporting pieces form thin parts at the connecting positions of the body part and the tail part, and air grooves are formed at the thin parts of the two adjacent sheet-shaped insulating supporting pieces.

2. A high speed electrical connector as in claim 1 wherein: the surface of the main body part of at least one signal terminal is exposed in the air, an air groove is formed on the corresponding insulating support, the extending trend of the air groove is the same as that of the main body part of the corresponding signal terminal, and the air groove is communicated with the air groove.

3. A high speed electrical connector as in claim 1 wherein: in the plugging direction, the width of the air groove is wider than that of the main body of the signal terminal at the position of the air groove.

4. A high speed electrical connector as in claim 1 wherein: the signal terminals are not exposed to the air grooves.

5. A high speed electrical connector as in claim 1 wherein: each sheet-like insulating support member is formed with an air passage therethrough at a position adjacent to the signal terminal, the air passage not communicating with the air groove.

6. A high speed electrical connector as in claim 5 wherein: the air channel has the same extension tendency as that of the body portion of the adjacent signal terminal, the body portion of at least one of the signal terminals includes a horizontally extending horizontal portion, a vertically extending vertical portion, and an inclined portion connecting the horizontal portion and the vertical portion, the air channel includes a portion adjacent to the horizontal portion, a portion adjacent to the vertical portion, and a portion adjacent to the inclined portion, and the air groove includes a portion at least partially exposing the horizontal portion to the air, a portion at least partially exposing the vertical portion to the air, and a portion at least partially exposing the inclined portion to the air.

7. A high speed electrical connector as in claim 1 wherein: the high-speed electric connector further comprises an insulation body, the plurality of sheet-shaped insulation support pieces are fixed with the insulation body, the front end of the insulation body is provided with two opening-shaped first slots and two opening-shaped second slots, the first slots and the second slots are arranged at intervals along the vertical direction, the contact parts of the two signal terminals above the insulation support pieces protrude into the first slots, and the contact parts of the two signal terminals below the insulation support pieces protrude into the second slots.

8. A high speed electrical connector as in claim 7 wherein: the high-speed connector comprises an insulation body, a plurality of sheet-shaped insulation support pieces fixedly provided with signal terminals, and a module, and further comprises a shielding cage, wherein the shielding cage covers the periphery of the module, an insertion hole is formed in the front end of the shielding cage corresponding to the first slot and the second slot, a specific distance is arranged between the insertion hole and the front end of the insulation body along the insertion direction, and an insertion space is formed between the insertion hole of the shielding cage and the front end of the insulation body.

9. A high speed electrical connector as in claim 8 wherein: the shielding cage comprises a rear end plate located at the rear end, a heat dissipation area is formed between at least a local position of the rear end face of the module and the rear end plate, and heat dissipation holes are formed in the positions, corresponding to the heat dissipation area, of the rear end plate in a penetrating mode.

10. A high speed electrical connector as in claim 8 wherein: the shielding cage further comprises two partition plates which are arranged at intervals along the vertical direction to divide an insertion space into three areas, the high-speed electric connector further comprises a light guide part and a light isolating part, two supporting feet are formed at the rear end of the light guide part, two light guide columns are formed at the front end of the light guide part, the light guide part is positioned in the middle area of the two partition plates and clamped by the two partition plates, the light isolating part is fixed on the two light guide columns to expose the front end faces of the two light guide columns and cover the peripheries of the two light guide columns, the two supporting feet are clamped at two sides of the module, ventilation holes which are communicated in the front-back direction are formed in the light isolating part, the module groups are arranged adjacently, the light guide part is fixed on each module group, the shielding cage comprises a blocking plate, and the blocking plate is clamped between the two module groups, the baffle separates the light guides of the two modules over the full length of the light guide.

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