CN113036541B

CN113036541B - Electrical module

Info

Publication number: CN113036541B
Application number: CN202110213491.8A
Authority: CN
Inventors: 朱送良
Original assignee: Zhongshan Yide Electronics Co ltd
Current assignee: Zhongshan Yide Electronics Co ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2023-03-31
Anticipated expiration: 2041-02-25
Also published as: CN113036541A

Abstract

The invention discloses an electrical property module, which comprises at least one sub-module, wherein the sub-module comprises: at least a pair of signal terminals, each signal terminal has a contact part, a connection part and a connection part to connect the contact part and the connection part, the connection part is fixed on at least one insulation block; the first shielding body and the second shielding body jointly form a first accommodating space for accommodating the connecting part and the insulating block, the connecting part is positioned between the first shielding body and the second shielding body, and the contact part extends forwards to expose the first shielding body and the second shielding body; at least one matching shielding piece is provided with a shielding body to form a second containing space for containing the contact part, and the inner wall surface of the shielding body is separated from the contact part by an air medium. The invention can shield the connecting part and the contact part of the signal terminal from interference signals, and has simple manufacturing process, thereby improving the high-frequency performance of the electrical module and reducing the production cost.

Description

Electrical module

[ technical field ] A

The present invention relates to an electrical module, and more particularly, to an electrical module with high frequency performance.

[ background ] A method for producing a semiconductor device

In a conventional electrical module, for example, chinese patent CN201210040622.8, see fig. 5 of the specification of the patent, paragraphs [ 0040 ] to [ 0046 ] disclose that the first electrical connector 30 includes a first main body 31 and a plurality of first terminal assemblies 32, each of the first terminal assemblies 32 includes a body 320, a plurality of first signal terminals 321 mounted on the body 320, a first insulating member 322 holding the first signal terminals 321, a first grounding member 323 mounted on the body 320, and a first spacer 324. The first body 31 and the body 320 may be both conductive, and are formed by plating a conductive layer on an insulating plastic body. The first spacer 324 insulates and separates the first contact portion 340 of the first signal terminal 321 from the first main body 31, and the first ground part 323 has a flat plate portion 350 and a ground contact portion 352 extending from the flat plate portion 350.

In the first electrical connector 30, since the ground contact portion 352 extends from the flat plate portion 350 of the first ground member 323, the ground contact portion 352 has a flat plate shape and shields one side of the first contact portion 340, and the first ground member 323 cannot shield the other side of the first contact portion 340 from an interference signal, which affects the high-frequency performance of the electrical connector. Moreover, in paragraph 0039 of this patent specification, in order to shield the first contact portion from the first main body, in order to prevent the first signal terminal 321 from being short-circuited due to the contact between the first main body 31 and the first contact portion 340, the first spacer 324 is added to the first electrical connector 30 to insulate and space the first main body 31 from the first contact portion 340, so that the components and the manufacturing process of the first electrical connector 30 are increased, and the manufacturing cost is increased.

Therefore, a new electrical module is needed to overcome the above problems.

[ summary of the invention ]

The invention aims to provide an electrical module, wherein a connecting part of a signal terminal is positioned between a first shielding body and a second shielding body, and a contact part of the signal terminal is accommodated in a second accommodating space of a matching shielding piece, so that interference signals can be effectively shielded for the connecting part and the contact part of the signal terminal, the manufacturing process is simple, the high-frequency performance of the electrical module is improved, and the production cost is reduced.

In order to achieve the purpose, the invention adopts the following technical scheme: an electrical module comprising at least one sub-module, the sub-module comprising: at least one pair of signal terminals, each of which has a contact portion for mating with a mating connector, a conductive portion for electrically contacting with a circuit board, and a connecting portion for connecting the contact portion and the conductive portion, the connecting portion being fixed to at least one insulating block; a first shield having a main body portion located at one side of the connecting portion; the second shielding body and the first shielding body jointly form at least one first accommodating space for accommodating and fixing the connecting part and the insulating block, the connecting part is positioned between the first shielding body and the second shielding body, the contact part extends forwards to expose the first shielding body and the second shielding body, and the first shielding body and the second shielding body are electrically isolated from the signal terminal; the matching shielding piece is provided with a shielding body which is positioned in front of the first accommodating space, the shielding body surrounds the outer side of the contact part and forms a second accommodating space for accommodating the contact part, the inner wall surface of the shielding body is separated from the contact part by an air medium, the first accommodating space is communicated with the second accommodating space, and the matching shielding piece, the first shielding body and the second shielding body are electrically communicated.

Furthermore, the second shielding body comprises an insulating body and a conductive material arranged on the insulating body, the second shielding body is electrically conducted with the first shielding body through the conductive material, and the matching shielding piece is made of a metal material and is used for being butted with the butting connector.

Furthermore, an extension part is formed by extending from the rear end of the shielding body backwards to exceed the front end face of the main body part, the extension part is fixed on the first shielding body, and the first shielding body is made of a metal material.

Further, the electrical module has a plurality of sub-modules stacked in sequence in the up-down direction, the second shielding body of one of the two adjacent sub-modules is provided with a plurality of protruding portions protruding toward the first shielding body of the other sub-module, each protruding portion contacts with the surface of the first shielding body of the other sub-module, and the two adjacent protruding portions are spaced by an air medium.

Furthermore, the protruding portion of the second shield of one of the two adjacent sub-modules abuts against the surface of the first shield of the other sub-module, lower edges of left and right ends of the second shield located above are respectively disposed opposite to upper edges of left and right ends of the second shield located below, and a first gap is formed between the lower edges and the upper edges disposed opposite thereto.

Furthermore, the electrical module is provided with a plurality of sub-modules which are sequentially stacked in the vertical direction, at least one fixing mechanism is arranged on the second shielding bodies of any two adjacent sub-modules which are stacked vertically to fix the two adjacent second shielding bodies, each fixing mechanism comprises an inserting part and a positioning groove which is used for correspondingly fixing the inserting part, each second shielding body can be selectively provided with the inserting part or/and the positioning groove so as to be matched with the positioning groove or/and the inserting part of the adjacent second shielding body, after the inserting part is matched with the corresponding positioning groove, one end face of the inserting part and a corresponding groove face of the positioning groove are oppositely arranged in the vertical direction, and a second gap exists between the end face and the groove face which is oppositely arranged.

Further, the second shield has a plurality of the first receiving spaces and a plurality of ribs, and the plurality of the first receiving spaces and the plurality of ribs are alternately arranged in the left-right direction; the sub-module comprises a plurality of insulating blocks and a plurality of pairs of signal terminals arranged along the left-right direction, and the connecting parts of each pair of signal terminals are fixed on the corresponding insulating blocks and are accommodated in the corresponding first accommodating spaces; the bottom of the first shield is provided with a plurality of grounding tails bent and extended downwards from the main body part, the bottom of each rib part is provided with a groove for accommodating the corresponding grounding tail, and one grounding tail is arranged between the conducting parts of two adjacent pairs of signal terminals.

Further, the bottom of the first shielding body is further provided with a plurality of shielding tails extending downward from the main body, and the conductive portion of each pair of signal terminals is aligned with a corresponding one of the shielding tails in the front-rear direction.

Further, one of the inner wall surfaces of the shield body is disposed opposite to the contact surface of the contact portion, a distance between the contact surface and the inner wall surface disposed opposite thereto is defined as a first distance, a distance between the connection portion and the main body portion of the first shield body is defined as a second distance, and the first distance is greater than the second distance.

Furthermore, the sub-module further includes a power terminal for mating with a mating power element of the mating connector, and a contact arm is formed by extending forward from the front end of the main body portion, the contact arm is adjacent to the contact portion of the power terminal, the contact arm is for contacting with a ground element of the mating connector, the contact arm is located outside the mating shielding element, and at least a portion of the contact arm overlaps with a projection of the shielding body along the left-right direction.

Furthermore, the connecting portion of each signal terminal is bent and extended from top to bottom, each connecting portion includes at least two extending sections and at least one bent section located between two adjacent extending sections, the width of each bent section along the left-right direction is defined as a first width, the width of each extending section along the left-right direction is defined as a second width, and the first width is greater than the second width.

Furthermore, the sub-module is provided with a plurality of insulating blocks, each extending section is fixed on the corresponding insulating block, and the insulating blocks are exposed from the bending sections.

Compared with the prior art, the electrical module provided by the invention has the following beneficial effects:

the connecting part of the signal terminal is positioned in the first accommodating space so as to shield the connecting part of the signal terminal from interference signals through the first shield and the second shield, and the contact part of the signal terminal is positioned in the second accommodating space so as to shield the contact part of the signal terminal from interference signals through the matching shield, so that the signal terminal can be effectively shielded, signal crosstalk is reduced, and the high-frequency performance of the electrical module is improved; in addition, other elements do not need to be added around the contact part of the signal terminal to be spaced from the matched shielding part for shielding the signal of the contact part, so that the manufacturing process is simplified, and the production cost is reduced. The matching shielding piece, the first shielding body and the second shielding body are electrically conducted to form an integral grounding path, so that the potentials of the matching shielding piece, the first shielding body and the second shielding body are the same, and the shielding effect of the electrical module is improved. Meanwhile, the contact part of the signal terminal extends forwards to expose the first shield and the second shield, the inner wall surface of the shield body and the contact part are separated by an air medium, so that the contact part can be prevented from contacting the shield body to cause short circuit, and the shield body does not need to be enlarged for accommodating the first shield and the second shield; furthermore, the contact portion of the signal terminal is surrounded by an air medium, and the connecting portion is located in the first accommodating space and fixed by the insulating block, when the contact portion of the signal terminal is overlapped with the thickness of a butting signal element of a butting connector, so that the impedance of the contact portion is changed, due to the fact that the media around the contact portion and the connecting portion are different, the impedance of the signal terminal is adjusted, and the influence of the electrical module and the butting connector on the impedance consistency of the signal terminal after butting is reduced.

[ description of the drawings ]

Fig. 1 is a perspective view of an electrical module and a mating connector of an embodiment of the invention when they are not mated;

fig. 2 is a side view of the electrical module and the docking connector of the embodiment of the present invention after the first insulative docking shell, the rear housing and the second insulative docking shell have been docked;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a cut-away view of the electrical module and the docking connector of the embodiment of the invention;

FIG. 5 is an enlarged view of portion B of FIG. 4;

FIG. 6 is an exploded view of an electrical module according to an embodiment of the present invention;

FIG. 7 is a perspective view of a sub-module according to one embodiment of the present invention;

FIG. 8 is a perspective view of a mating shield of an embodiment of the present invention;

FIG. 9 is a perspective view of a first shield of an embodiment of the present invention;

fig. 10 is a perspective view of a plurality of pairs of signal terminals and a power supply terminal arranged in the left-right direction according to an embodiment of the present invention;

fig. 11 is a top view of a plurality of pairs of signal terminals and a power supply terminal arranged in a left-right direction according to an embodiment of the present invention;

fig. 12 is an exploded view of a docking connector according to an embodiment of the present invention.

Description of the embodiments reference is made to the accompanying drawings in which:

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[ detailed description ] embodiments

For a better understanding of the objects, structure, features, and functions of the invention, reference should be made to the drawings and detailed description that follow.

In order to facilitate understanding of the technical scheme of the invention, an X axis in three-dimensional coordinate axes in the drawings of the specification is defined as a left-right direction, a Y axis is defined as a front-back direction, a Z axis is defined as an up-down direction, and the X axis, the Y axis and the Z axis are mutually perpendicular in pairs.

Referring to fig. 1, fig. 2 and fig. 4, in an embodiment of the present invention, an electrical module 100 and a docking connector 200 for docking with the electrical module 100 are shown, a front end of the electrical module 100 is docked with one end of the docking connector 200 along the front-back direction Y, a bottom end of the electrical module 100 is connected with a first circuit board 8 along the up-down direction Z, and another end of the docking connector 200 is electrically connected with a second circuit board 9.

Referring to fig. 1 and 6, the electrical module 100 according to an embodiment of the present invention includes a first insulation docking shell 1, a rear shell 2, and a plurality of sub-modules 3, wherein the plurality of sub-modules 3 are sequentially stacked along the vertical direction Z, and the first insulation docking shell 1 and the rear shell 2 are assembled together to form a receiving space (not shown) for receiving the plurality of sub-modules 3.

Referring to fig. 2, 4 and 12, the electrical connector provided in the embodiment of the present invention includes a second insulative docking housing 7, a plurality of pairs of docking signal elements 71, a plurality of docking power elements 72 and a plurality of grounding elements 73, wherein the pairs of docking signal elements 71 and the plurality of docking power elements 72 are arranged in a plurality of rows along the left-right direction X. Wherein each row has several pairs of the docking signal elements 71 and two docking power elements 72, two docking power elements 72 in any row are connected together and surrounded by one of the grounding elements 73, and the two docking power elements 72 connected together are located at the left end or the right end of its corresponding row, and one of the two docking power elements 72 connected together is docked with the power terminal P of the corresponding sub-module 3. Each pair of the docking signal elements 71 is fixed to an insulating element 74, each pair of the docking signal elements 71 and the corresponding insulating block 32 are covered inside the corresponding grounding element 73, and similarly, the two docking power supply elements 72 connected together are also fixed to an insulating element 74, and the two docking power supply elements 72 and the corresponding insulating block 32 are covered inside the corresponding grounding element 73. The docking connector 200 further includes a plurality of grounding strips 75, and the grounding elements 73 of each row are commonly in contact with a corresponding one of the grounding strips 75, so that the grounding elements 73 of each row are electrically conducted together through the corresponding grounding strips 75.

Referring to fig. 6 to 10, in the electrical module 100, each of the sub-modules 3 includes a plurality of terminals 31, each of the plurality of terminals 31 includes a plurality of pairs of signal terminals S and a power terminal P, and each of the sub-modules 3 further includes a plurality of insulation blocks 32 for respectively fixing the plurality of pairs of signal terminals S and the power terminal P, a first shield 4, a second shield 5, and a plurality of mating shields 6. In each sub-module 3, a plurality of pairs of the signal terminals S and the power terminals P are arranged along the left-right direction X, each of the signal terminals S and the power terminals P includes a contact portion 311 for mating with the mating connector 200, a conductive portion 313 for electrically contacting with the first circuit board 8, and a connecting portion 312 for connecting the contact portion 311 and the conductive portion 313. In this embodiment, each of the connecting portions 312 is fixed by the corresponding insulating block 32, the contact portion 311 extends forward from the connecting portion 312 to the insulating block 32, and the connecting portion 313 extends downward from the insulating block 32. The first shield 4 has a main body 41 located on the upper side of the connecting portion 312, the second shield 5 and the first shield 4 together form a plurality of first receiving spaces 51 for receiving and fixing the corresponding connecting portion 312 and the insulating blocks 32, respectively, each of the connecting portions 312 is located between the first shield 4 and the second shield 5, the contact portion 311 extends forward to expose the first shield 4 and the second shield 5, and the insulating blocks 32 electrically isolate the pairs of signal terminals S and the power terminals P from the first shield 4 and the second shield 5. Each of the mating shields 6 includes a shield body 61 located in front of the first receiving space 51, the shield bodies 61 of the mating shields 6 respectively surround the outer sides of the contact portions 311 of the pairs of signal terminals S, each of the shield bodies 61 includes a second receiving space 612 formed by surrounding four sides, each of the second receiving spaces 612 correspondingly receives the contact portions 311 of the pair of signal terminals S, the inner wall surfaces 611a to 611d of the shield bodies 61 are separated from the corresponding contact portions 311 of the signal terminals S by an air medium, and the first receiving space 51 is communicated with the second receiving space 612. The connecting portion 312 of the signal terminal S of the present invention is located in the first receiving space 51 to shield the connecting portion 312 of the signal terminal S from interference signals through the first shield 4 and the second shield 5, and the contact portion 311 of the signal terminal S is located in the second receiving space 612 to shield the contact portion 311 of the signal terminal S from interference signals through the mating shield 6, so that the signal terminal S can be effectively shielded, signal crosstalk is reduced, and the high-frequency performance of the electrical module 100 is improved; in addition, other elements do not need to be added around the contact part 311 of the signal terminal S to be spaced from the mating shielding member 6 for shielding the signal of the contact part 311, so that the manufacturing process is simplified, and the production cost is reduced. The matching shielding piece 6, the first shielding body 4 and the second shielding body 5 are electrically conducted to form an integral grounding path, so that the potentials of the three parts are the same, and the shielding effect of the electrical module 100 is improved. Meanwhile, the contact portion 311 of the signal terminal S extends forward to expose the first shield 4 and the second shield 5, and the inner wall surfaces 611a to 611d of the shield body 61 are separated from the contact portion 311 by an air medium, so that the contact portion 311 can be prevented from contacting the shield body 61 to cause short circuit, and the shield body 61 does not need to be enlarged to accommodate the first shield 4 and the second shield 5; further, the contact portion 311 of the signal terminal S is surrounded by an air medium and the connection portion 312 is located in the first receiving space 51 and fixed by the insulating block 32, when the contact portion 311 of the signal terminal S overlaps the thickness of the mating signal element 71 of the mating connector 200, so that the impedance of the contact portion 311 changes, due to the difference between the mediums around the contact portion 311 and the connection portion 312, the impedance of the signal terminal S is adjusted, and the influence on the impedance consistency of the signal terminal S after the electrical module 100 is mated with the mating connector 200 is reduced.

In this embodiment, when the electrical module 100 is not mated with the mating connector 200, only an air medium exists between the contact portion 311 of the signal terminal S and the inner wall surfaces 611a to 611d of the shielding body 61 in each of the second receiving spaces 612. In the present embodiment, the power terminal P and each pair of the signal terminals S are respectively fixed by the independent insulating blocks 32, a plurality of the insulating blocks 32 are not connected together to form an integral body, and the first receiving space 51 correspondingly has a plurality of the insulating blocks, but in other embodiments, a plurality of pairs of the signal terminals S and the power terminal P may be fixed by one integral insulating block 32 and integrally received in one first receiving space 51, which is not limited herein. As shown in fig. 6, the signal terminals S of the same pair are fixed by three insulating blocks 32, but it is needless to say that any number of insulating blocks 32 may be selected according to actual design requirements to fix the signal terminals S of the same pair or the power supply terminal P, and the present invention is not limited thereto. In other embodiments, the first shield 4 is located below the connection portion 312, and the second shield 5 is located above the connection portion 312, but the first shield 4 may be located below the connection portion 312, and the second shield 5 may be located above the connection portion 312, which is not limited herein. It should be noted that, in the present embodiment, the second shielding body 5 is located entirely behind the contact portion 311, so that the contact portion 311 extends forward beyond the foremost surface of the second shielding body 5 to expose the second shielding body 5, in other embodiments, the second shielding body 5 may also have a partial structure (not shown, the same applies below) further extending forward, for example, the second shielding body 5 has a partial structure attached to the outer surface of the shielding body 61 of the mating shielding member 6, which is not limited herein, as long as the contact portion 311 can be exposed out of the second shielding body 5 and the contact portion 311 is separated from the inner wall surfaces 611a to 611d of the shielding body 61 by an air medium. Each of the grounding elements 73 surrounding the outer side of the mating signal element 71 is abutted with a corresponding one of the mating shields 6, in this embodiment, after the electrical module 100 is completely abutted with the mating connector 200, the grounding element 73 is received inside the corresponding mating shield 6, and in other embodiments, the mating shields 6 may be received inside the corresponding grounding elements 73.

Referring to fig. 6, 7 and 9, for each sub-module 3, the second shielding body 5 further has a plurality of ribs 52, the plurality of first receiving spaces 51 and the plurality of ribs 52 are alternately arranged along the left-right direction X, and after the connecting portion 312 and the corresponding insulating block 32 of each pair of signal terminals S are received in the corresponding first receiving space 51, the ribs 52 are adjacent to the connecting portion 312 in the left-right direction X, so that the periphery of the connecting portion 312 of each pair of signal terminals S is commonly shielded by the first shielding body 4 and the second shielding body 5 to shield interference signals. Further, the bottom of the first shielding body 4 is provided with a plurality of ground tails 43 bent downward from the main body 41, the bottom of each rib 52 is provided with a groove 521 for receiving the corresponding ground tail 43, and one ground tail 43 is disposed between the conductive portions 313 of two adjacent pairs of signal terminals S. Therefore, the grounding tail 43 is accommodated in the groove 521 of the rib 52, so that the gap of the first shield 4 can be further limited, and the relative displacement between the first shield 4 and the second shield 5 can be reduced; meanwhile, each of the ground tails 43 can shield signals from two adjacent pairs of the conductive connection portions 313 in the left-right direction X, so that signal crosstalk between two adjacent pairs of the signal terminals S can be further reduced, and the high-frequency performance of the electrical module 100 can be improved. Further, the bottom of the first shielding body 4 is further provided with a plurality of shielding tail portions 44 extending downward from the main body portion 41, and the lead portion 313 of each pair of the signal terminals S is aligned with a corresponding one of the shielding tail portions 44 in the front-rear direction Y. Therefore, each of the shielding tails 44 can shield the conductive connection portion 313 of a corresponding pair of the signal terminals S from interfering signals in the front-back direction Y, thereby further reducing signal crosstalk between two adjacent pairs of the signal terminals S and improving the high-frequency performance of the electrical module 100. Further, the bottom of each of the shielding tails 44 is electrically connected to the first circuit board 8, so as to increase the contact area between the first shielding body 4 and the first circuit board 8, and ensure that the first shielding body 4 can be conducted with the ground path of the first circuit board 8.

Referring to fig. 6 to 8, one of the inner wall surfaces 611d of the shielding body 61 is disposed opposite to the contact surface 3111 of the contact portion 311 of the signal terminal S, a distance between the contact surface 3111 and the inner wall surface 611d disposed opposite thereto is defined as a first distance d1, a distance between the connecting portion 312 and the main body portion 41 of the first shielding body 4 is defined as a second distance d2, and the first distance d1 is greater than the second distance d2. Specifically, as shown in fig. 5, in the present embodiment, when the contact surface 3111 of the contact portion 311 of the signal terminal S is directed upward, the inner wall surface 611d disposed opposite to the contact surface 3111 is an uppermost inner wall surface 611d of the shield body 61, and in other embodiments, when the contact surface 3111 of the contact portion 311 of the signal terminal S may be directed downward, leftward or rightward, the inner wall surface disposed opposite to the contact surface 3111 is a lowermost inner wall surface 611c, a left inner wall surface 611a or a right inner wall surface 611b of the shield body 61. Since the impedance of the position where the contact portion 311 is superimposed by the thickness of the mating signal element 71 is reduced after the contact portion 311 of the signal terminal S is mated with the mating connector 200, the impedance can be adjusted by increasing the distance between the contact portion 311 of the signal terminal S and the inner wall surface 611d facing thereto by making the first distance d1 greater than the second distance d2, so as to improve the impedance consistency of the signal terminal S; meanwhile, the second distance d2 is smaller, so that the overall structure of the electrical property module 100 is not required to be enlarged, the overall size of the electrical property module 100 is prevented from being increased due to impedance adjustment, and the miniaturization design of the overall structure of the electrical property module 100 is facilitated. Further, in this embodiment, after the electrical module 100 is mated with the mating connector 200, the mating shield 6 receives the grounding element 73 of the mating connector 200, the first distance d1 is larger and can also provide enough space for the grounding element 73 to prevent the signal terminal S from contacting with the grounding element 73 and short-circuiting, in other embodiments, the mating shield 6 can be further configured to be received in the grounding element 73 of the mating connector 200, and correspondingly, the first distance d1 is larger and can also prevent the signal terminal S from contacting with the inner wall surfaces 611a to 611d of the mating shield 6 and short-circuiting.

Referring to fig. 2, 4 and 6, for any one of the sub-modules 3, the power terminal P is configured to be abutted against a mating power element 72 of the mating connector 200, a contact arm 42 is formed by extending forward from the front end of the main body portion 41, the contact arm 42 is adjacent to a contact portion 311 of the power terminal P, the contact arm 42 is configured to be contacted with the grounding element 73 of the mating connector 200, the contact arm 42 is located at the outer side of the mating shield 6, and at least a portion of the contact arm 42 overlaps with projections of the shield bodies 61 of the mating shields 6 along the left-right direction X. The contact arm 42 is used for contacting with the grounding element 73 of the butting connector 200, the matched shielding piece 6 is not required to be arranged around the power terminal P, the number of the matched shielding pieces 6 can be reduced, the occupied space of one matched shielding piece 6 is reduced, the cost can be reduced, and the miniaturization design of the electrical module 100 is facilitated; and at least a part of the contact arm 42 overlaps with the projection of the shielding body 61 along the left-right direction X, compared with the case that the projections of the contact arm 42 and the shielding body 61 are completely staggered, the invention can reduce the interval between two adjacent sub-modules 3, reduce the occupied space of the contact arm 42 on the sub-modules 3, and is beneficial to the miniaturization design of the electrical module 100.

Referring to fig. 6 to 9, the first shielding body 4 is made of a metal material, and the second shielding body 5 includes an insulating body and a conductive material disposed on the insulating body, for example, the insulating body is made of a plastic material, and the conductive material is plated on the surface of the insulating body to form a plated plastic or is substantially uniformly distributed inside the insulating body to form a conductive plastic. The second shield 5 is electrically connected to the first shield 4 through the conductive material, and each of the mating shields 6 is made of a metal material and is configured to be mated with the mating connector 200. Therefore, the first shield 4 and the second shield 5 form an integral grounding path, so that the shielding effect is better, and the high-frequency performance of the electrical module 100 is improved; moreover, if the second shield 5 extends forward around the outside of the contact portion 311 and replaces the mating shield 6 to be mated with the mating connector 200, in order to prevent the portion of the second shield 5 protruding forward from contacting the contact portion 311 and ensure that the second shield 5 is mated with the mating connector 200, the portion of the second shield 5 protruding forward needs to be thinned, since the second shield 5 is made of an insulating body and a conductive material, the thinning will cause the portion of the second shield 5 protruding forward to be easily broken when being mated, but the invention does not make the second shield 5 extend forward around the outside of the contact portion 311 directly, but surrounds the outside of the contact portion 311 of the signal terminal S through the mating shield 6 made of a metal material and is mated with the mating connector 200, and the mating shield 6 is not easily broken. Further, in the plurality of sub-modules 3, the second shielding body 5 of any two adjacent sub-modules 3 is protruded toward the first shielding body 4 of the other sub-module 3 to form a plurality of protruding portions 53, the two adjacent protruding portions 53 are separated by an air medium, and each protruding portion 53 is in contact with a surface of the first shielding body 4 of the other adjacent sub-module 3. In this embodiment, for two sub-modules 3 adjacent to each other up and down, the second shielding body 5 of the sub-module 3 located above is provided with the protrusion 53 protruding downward to contact the upper surface of the first shielding body 4 of the sub-module 3 located below. According to the invention, the first shields 4 and the second shields 5 of the plurality of sub-modules 3 can be connected together through the protruding parts 53 to form a common grounding path, so that the interference signal shielding effect of the electrical module 100 is further improved, and the signal interference on the signal terminals S is reduced; in addition, because the insulating body of the second shielding body 5 can shrink during molding, the two adjacent protruding portions 53 are spaced by an air medium, so that the thickness of the insulating body can be reduced, the shrinkage degree of the insulating body can be reduced, and the problem that the protruding portions 53 cannot contact the first shielding body 4 of the adjacent sub-module 3 due to excessive shrinkage during molding of the second shielding body 5 can be avoided. Further, in each sub-module 3, the main body 41 of the first shielding body 4 further includes a plurality of contact points 412 protruding toward the second shielding body 5. If the main body 41 is not provided with the plurality of contact points 412, when the main body 41 fails to form a regular surface to contact with the second shield 5 during molding, the first shield 4 and the second shield 5 may have poor contact, so that the plurality of contact points 412 provided on the main body 41 can ensure mutual conduction between the first shield 4 and the second shield 5.

Furthermore, the protruding portion 53 of the second shield 5 of one of the two adjacent sub-modules 3 abuts against the surface of the first shield 4 of the other sub-module, lower side edges of left and right ends of the second shield 5 of the upper sub-module 3 are respectively disposed opposite to upper side edges of left and right ends of the second shield 5 of the lower sub-module 3, and a first gap g1 exists between the lower side edges and the upper side edges disposed opposite to the lower side edges. Specifically, the first gap g1 exists over approximately the entire extension of the lower side edge and the upper side edge which are disposed opposite to each other. Therefore, the first gap g1 can separate the left and right ends of the second shields 5 of two adjacent sub-modules 3 by a certain distance, so that the condition that the protruding portions 53 are lifted and cannot contact with the corresponding first shields 4 when the lower side edges and the upper side edges which are oppositely arranged are contacted and attached after the two adjacent sub-modules 3 are mutually positioned is avoided, and the first gap g1 of the present invention allows a certain dimension error to exist between the second shields 5 of the two adjacent sub-modules 3 and can ensure that the protruding portions 53 are abutted against the surfaces of the adjacent first shields 4. Furthermore, a limiting portion 56 is respectively disposed at the left end and the right end of each second shielding body 5, and the first shielding body 4 is fixed between the left limiting portion 56 and the right limiting portion 56. In this embodiment, the upper edge is an upper surface of the position-limiting portion 56. Therefore, the left and right limiting portions 56 can limit the first shield 4, and prevent the first shield 4 from moving out of the corresponding sub-module 3 along the left-right direction X.

Referring to fig. 2, fig. 3 and fig. 6, one or more fixing mechanisms (not shown, the same applies below) are disposed on the second shields 5 of any two adjacent sub-modules 3 stacked up and down to fix the two adjacent sub-modules 5, each fixing mechanism includes a plug-in portion 54 and a positioning groove 55 for correspondingly fixing the plug-in portion 54, and each second shield 5 is selectively provided with the plug-in portion 54 or/and the positioning groove 55 to match with the positioning groove 55 or/and the plug-in portion 54 of the adjacent second shield 5. Specifically, in this embodiment, for any two sub-modules 3 adjacent to each other in the up-down direction Z, the insertion portion 54 is convexly provided on the second shielding body 5 of the sub-module 3 located above toward the sub-module 3 located below, and the positioning groove 55 formed by recessing downward is provided on the second shielding body 5 of the sub-module 3 located below, so that the insertion portion 54 of the second shielding body 5 located above is downwardly inserted into the positioning groove 55 of the second shielding body 5 located below, and each insertion portion 54 is correspondingly matched with one positioning groove 55, so that two adjacent sub-modules 3 stacked up and down are fixed and positioned to each other. Therefore, through the mutual matching of the inserting portion 54 and the positioning groove 55, any two adjacent sub-modules 3 can be positioned and fixed with each other and the two adjacent second shields 5 can be communicated together to form an integral grounding path to improve the high-frequency performance of the electrical module 100, and meanwhile, the plurality of sub-modules 3 can be assembled and disassembled, so that the number of the sub-modules 3 can be increased or decreased according to actual requirements, or the specific sub-module 3 can be maintained or replaced. Moreover, after the mating of the mating part 54 and the corresponding positioning groove 55 is completed, an end surface of the mating part 54 and a groove surface of the corresponding positioning groove 55 are oppositely arranged in the vertical direction Z, and a second gap g2 exists between the end surface and the groove surface oppositely arranged. Therefore, after the two adjacent sub-modules 3 are positioned with respect to each other, the end surfaces are prevented from contacting and fitting with the groove surfaces arranged opposite to the end surfaces, and the protruding portions 53 are lifted up and cannot contact with the corresponding first shields 4, and the second gap g2 of the present invention allows a certain dimensional error between the insertion portions 54 and the corresponding positioning grooves 55, and can ensure that the protruding portions 53 abut against the surfaces of the adjacent first shields 4.

Further, an extension portion 62 is formed by extending from the rear end of the shielding body 61 of each of the mating shields 6 rearward beyond the front end surface 411 of the main body portion 41 of the first shield 4, and the extension portion 62 is fixed to the upper surface of the first shield 4. Specifically, in this embodiment, the upper side surface of the shielding body 61 is higher than the main body portion 41 of the first shielding body 4, and the extending portion 62 is bent and extended backward and downward from the rear end of the upper side surface of the shielding body 61. Since the extending portion 62 extends rearward beyond the front end surface 411 of the main body portion 41, a gap between the rear end of the shield body 61 and the main body portion 41 can be partially shielded, so that signal interference on the signal terminal S can be reduced, and at the same time, compared with the case where the mating shield 6 made of a metal material is fixed to the second shield 5 having an insulating body, the present invention fixes the mating shield 6 made of a metal material to the first shield 4 made of a metal material, so that the connection between the two is more secure.

Referring to fig. 4, 6 and 10, the connecting portion 312 of each signal terminal S is bent and extended from top to bottom, each connecting portion 312 includes at least two extending sections 3121, specifically, each connecting portion 312 includes three extending sections 3121, or includes any number of extending sections 3121 greater than 1, and the number of the extending sections 3121 included in one connecting portion 312 in different sub-modules 3 may be different, for example, a plurality of sub-modules 3 extend along the front-back direction Y and the up-down direction Z, the connecting portion 312 in the sub-module 3 with a longer extending length is relatively longer, and the connecting portion 312 in the sub-module 3 with a shorter extending length is relatively shorter, so that the number of the extending sections 3121 may be correspondingly adjusted according to the length of the connecting portion 312. As shown in fig. 10 to 11, each connecting portion 312 further includes a bending section 3122, one bending section 3122 is disposed between two adjacent extending sections 3121, a width of the bending section 3122 along the left-right direction X is defined as a first width w1, a width of each extending section 3121 along the left-right direction X is defined as a second width w2, and the first width w1 is greater than the second width w2. Since the current has a low flowing speed at the position of the bending section 3122, the impedance may be increased due to the bending shape of the bending section 3122, and the first width w1 of the bending section 3122 is set to be greater than the second width w2 of the extending section 3121, so that the first width w1 may be relatively increased, the impedance of the bending section 3122 may be reduced, and the impedance consistency of the connection portion 312 of the signal terminal S may be improved. Further, each extending section 3121 is fixed to the corresponding insulation block 32, and the bending section 3122 exposes the insulation block 32. Therefore, the air content around the bending section 3122 can be increased, and the impedance of the bending section 3122 can be further adjusted by the dielectric constant of air being smaller than the dielectric constant of the insulating block 32, so that the impedance consistency of the connection portion 312 of the signal terminal S can be further improved. In the manufacturing process, the insulating block 32 may be molded on the bent signal terminal S after the signal terminal S is bent, or the insulating block 32 may be molded on the horizontal signal terminal S before the signal terminal S is bent. After the signal terminal S is bent, when the plurality of extending sections 3121 are positioned to mold the plurality of insulating blocks 32 correspondingly, the bent signal terminal S may limit the occupied space between the plurality of molds, which is not beneficial to the positioning and arrangement of the plurality of molds, so a manner of molding the insulating blocks 32 on the horizontal signal terminal S and then bending the horizontal signal terminal S is preferably adopted, and the bending section 3122 of the present invention exposes the insulating blocks 32, which also can prevent the insulating blocks 32 from being molded at the position of the bending section 3122, which may cause the signal terminal S to be unable to be bent.

In summary, the electrical module 100 provided in the present invention has the following advantages:

1. the connecting portion 312 of the signal terminal S of the present invention is located in the first receiving space 51 to shield the connecting portion 312 of the signal terminal S from interference signals through the first shield 4 and the second shield 5, and the contact portion 311 of the signal terminal S is located in the second receiving space 612 to shield the contact portion 311 of the signal terminal S from interference signals through the mating shield 6, so that the signal terminal S can be effectively shielded, signal crosstalk is reduced, and the high-frequency performance of the electrical module 100 is improved; in addition, other elements do not need to be added around the contact part 311 of the signal terminal S of the present invention to be spaced from the mating shielding member 6 that shields the contact part 311 from signals, which simplifies the manufacturing process and reduces the production cost. The matching shielding piece 6, the first shielding body 4 and the second shielding body 5 are electrically conducted to form an integral grounding path, so that the potentials of the three parts are the same, and the shielding effect of the electrical module 100 is improved. Meanwhile, the contact portion 311 of the signal terminal S extends forward to expose the first shield 4 and the second shield 5, and the inner wall surfaces 611a to 611d of the shield body 61 are separated from the contact portion 311 by an air medium, so that the contact portion 311 can be prevented from contacting the shield body 61 to cause short circuit, and the shield body 61 does not need to be enlarged to accommodate the first shield 4 and the second shield 5; further, the contact portion 311 of the signal terminal S is surrounded by an air medium and the connection portion 312 is located in the first receiving space 51 and fixed by the insulating block 32, when the contact portion 311 of the signal terminal S overlaps the thickness of the mating signal element 71 of the mating connector 200, so that the impedance of the contact portion 311 changes, due to the difference between the media around the contact portion 311 and the connection portion 312, the impedance of the signal terminal S is adjusted, and the influence on the impedance consistency of the signal terminal S after the electrical module 100 is mated with the mating connector 200 is reduced.

2. The second shield 5 is electrically connected to the first shield 4 through the conductive material, and each of the mating shields 6 is made of a metal material and is configured to be connected to the mating connector 200, so that the first shield 4 and the second shield 5 form an integral ground path, thereby improving the high-frequency performance of the electrical module 100; but the mating shield 6 is not easily broken by the mating shield 6 of the metal material surrounding the outside of the contact portion 311 of the signal terminal S and mated with the counterpart connector 200.

3. Each protrusion 53 contacts with a surface of the first shield 4 of another adjacent sub-module 3, so that the first shields 4 and the second shields 5 of a plurality of sub-modules 3 can be connected together to form a common ground path, thereby further improving the interference signal shielding effect of the electrical module 100 and reducing the signal interference on the signal terminals S; and the two adjacent protruding parts 53 are spaced by an air medium, so that the thickness of the insulating body can be reduced, the shrinkage degree of the insulating body is reduced, and the problem that the protruding parts 53 cannot contact the first shielding bodies 4 of the adjacent sub-modules 3 due to excessive shrinkage during the molding of the second shielding body 5 is avoided.

4. The submodule 3 that is located the top the lower side reason at both ends about the second shield 5 respectively with be located the below the submodule 3 the upper side reason at both ends about the second shield 5 sets up in opposite directions, the lower side reason with rather than setting up in opposite directions there is first clearance g1 between the upper side reason. Thus, the first gap g1 can separate the left and right ends of the second shields 5 of two adjacent sub-modules 3 by a certain distance, so that the condition that the protruding portions 53 are lifted and cannot contact the corresponding first shields 4 when the lower side edges and the upper side edges which are oppositely arranged are in contact with each other after the two adjacent sub-modules 3 are positioned with each other is avoided, and the first gap g1 of the present invention allows a certain dimensional error to exist between the second shields 5 of the two adjacent sub-modules 3 and can ensure that the protruding portions 53 abut against the surfaces of the adjacent first shields 4.

5. Each of the inserting portions 54 is correspondingly matched with one of the positioning grooves 55, so that two adjacent sub-modules 3 stacked up and down are fixed and positioned with each other, and the sub-modules 3 can be easily disassembled and assembled, thereby increasing or decreasing the number of the sub-modules 3 according to actual requirements, or repairing or replacing the specific sub-modules 3. Moreover, the second gap g2 exists between the end surface of the insertion part 54 and the groove surface of the positioning groove 55 opposite to the end surface, so that the situation that after two adjacent sub-modules 3 are positioned with each other, the end surface contacts and fits with the groove surface opposite to the end surface, the protrusion 53 is lifted and cannot contact with the corresponding first shielding body 4 is avoided, the second gap g2 of the present invention allows a certain dimension error to exist between the insertion part 54 and the corresponding positioning groove 55, and the protrusion 53 can be ensured to abut against the surface of the adjacent first shielding body 4.

6. By receiving the corresponding ground tails 43 in the grooves 521 of the rib 52, the relative displacement between the first shield 4 and the second shield 5 can be reduced, and one ground tail 43 is disposed between the conducting portions 313 of two adjacent pairs of signal terminals S, so that each ground tail 43 can shield the two adjacent pairs of conducting portions 313 in the left-right direction X, thereby further reducing the signal crosstalk between the two adjacent pairs of signal terminals S and improving the high-frequency performance of the electrical module 100. The lead portion 313 of each pair of signal terminals S is aligned with a corresponding one of the shield tail portions 44 in the front-back direction Y, so that the shield tail portions 44 can shield interference signals for the lead portions 313 of the corresponding pair of signal terminals S in the front-back direction Y, thereby further reducing signal crosstalk between two adjacent pairs of signal terminals S and improving the high-frequency performance of the electrical module 100.

7. The first distance d1 is greater than the second distance d2, so that the impedance can be adjusted by increasing the distance between the contact portion 311 of the signal terminal S and the inner wall surface 611d opposite to the contact portion, the impedance consistency of the signal terminal S is improved, the increase of the overall volume of the electrical module 100 due to the impedance adjustment is avoided, and the miniaturization design of the overall structure of the electrical module 100 is facilitated.

The above detailed description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, so that all the equivalent technical changes using the contents of the present specification and drawings are included in the scope of the present invention.

Claims

1. An electrical module, comprising at least one sub-module, the sub-module comprising:

at least one pair of signal terminals, each of the signal terminals having a contact portion for mating with a mating connector, a connecting portion for electrically contacting a circuit board, and a connecting portion connecting the contact portion and the connecting portion, the connecting portion being fixed to at least one insulating block, the contact portion being located forwardly outside the insulating block;

a first shield having a main body portion located at one side of the connecting portion;

the second shielding body and the first shielding body jointly form at least one first accommodating space for accommodating and fixing the connecting part and the insulating block, the connecting part is positioned between the first shielding body and the second shielding body, the contact part extends forwards to expose the first shielding body and the second shielding body, and the first shielding body and the second shielding body are electrically isolated from the signal terminal;

the at least one matching shielding piece is provided with a shielding body which is positioned in front of the first accommodating space, the shielding body surrounds the outer side of the contact part and forms a second accommodating space for accommodating the contact part, a medium between the inner wall surface of the shielding body and the contact part is air, the first accommodating space is communicated with the second accommodating space, and the matching shielding piece, the first shielding body and the second shielding body are electrically communicated.

2. The electrical module of claim 1, wherein the second shield includes an insulative housing and a conductive material disposed on the insulative housing, the contact portion of the signal terminal is located in front of the second shield, the second shield is electrically connected to the first shield through the conductive material, and the mating shield is made of a metal material and is configured to mate with the mating connector.

3. The electrical module of claim 2, wherein an extension portion is formed by extending from the rear end of the shield body rearward beyond the front end surface of the main body, the extension portion is fixed to the first shield, and the first shield is made of a metal material.

4. The electrical module of claim 2, wherein the electrical module has a plurality of sub-modules stacked in series in a vertical direction, the second shield of one of two adjacent sub-modules is protruded with a plurality of protrusions toward the first shield of the other, each protrusion is in contact with a surface of the first shield of the other sub-module, and two adjacent protrusions are spaced apart by an air medium.

5. The electrical module of claim 4, wherein the protrusion of the second shield of one of the two adjacent sub-modules abuts against a surface of the first shield of the other sub-module, lower edges of left and right ends of the second shield located above are respectively disposed opposite to upper edges of left and right ends of the second shield located below, and a first gap exists between the lower edges and the upper edges disposed opposite thereto.

6. The electrical module of claim 5, wherein the electrical module has a plurality of sub-modules stacked in sequence in an up-down direction, at least one fixing mechanism is disposed on the second shielding bodies of any two adjacent sub-modules stacked in the up-down direction to fix two adjacent sub-modules, the fixing mechanism includes an insertion portion and a positioning groove for correspondingly fixing the insertion portion, each of the second shielding bodies has the insertion portion or/and the positioning groove to match with the positioning groove or/and the insertion portion of the adjacent second shielding body, wherein after the insertion portion is completely matched with the corresponding positioning groove, an end surface of the insertion portion and a groove surface of the corresponding positioning groove are oppositely disposed in the up-down direction, and a second gap exists between the end surface and the groove surface oppositely disposed.

7. The electrical module of claim 1, wherein the second shield has a plurality of the first receiving spaces and a plurality of ribs, and the plurality of the first receiving spaces and the plurality of ribs are alternately arranged in a left-right direction;

the sub-module comprises a plurality of insulating blocks and a plurality of pairs of signal terminals arranged along the left-right direction, and the connecting parts of each pair of signal terminals are fixed on the corresponding insulating blocks and are accommodated in the corresponding first accommodating spaces;

the bottom of the first shielding body is provided with a plurality of grounding tails which are bent downwards and extend from the main body part, the bottom of each rib part is provided with a groove for accommodating the corresponding grounding tail, and one grounding tail is arranged between the conducting parts of two adjacent pairs of signal terminals.

8. The electrical module of claim 7, wherein the bottom portion of the first shield body further defines a plurality of shield tails extending downwardly from the main body portion, and the mating portion of each pair of the signal terminals is aligned with a corresponding one of the shield tails in the front-to-back direction.

9. The electrical module of claim 1, wherein one of the inner wall surfaces of the shield body is disposed opposite a contact surface of the contact portion, a distance between the contact surface and the inner wall surface disposed opposite thereto is defined as a first distance, a distance between the connection portion and the main body portion of the first shield body is defined as a second distance, and the first distance is greater than the second distance.

10. The electrical module of claim 1, wherein the sub-module further comprises a power terminal for mating with a mating power element of the mating connector, and a contact arm extending forward from the front end of the main body portion, the contact arm being adjacent to the contact portion of the power terminal, the contact arm for contacting with a ground element of the mating connector, the contact portion of the power terminal and the contact arm being located outside the mating shield, at least a portion of the contact arm overlapping with a left-right projection of the shield body.

11. The electrical module of claim 1, wherein the connecting portion of each signal terminal is bent and extends from top to bottom, each connecting portion includes at least two extending sections and at least one bent section located between two adjacent extending sections, a width of the bent section along a left-right direction is defined as a first width, a width of each extending section along the left-right direction is defined as a second width, and the first width is greater than the second width.

12. The electrical module of claim 11, wherein the sub-module has a plurality of insulating blocks, each of the extending sections is fixed to a corresponding one of the insulating blocks, and the bending section exposes the insulating block.