CN219917799U - Shielding piece and shielding assembly - Google Patents

Abstract

The utility model discloses a shielding piece and a shielding assembly, which are provided with a parting line section, a crimping section and an inserting section, wherein the rear end of the parting line section is connected with the crimping section, the front end of the parting line section is connected with the inserting section, the parting line section is composed of two cover plates which are oppositely arranged, a threading cavity is formed between the two cover plates, an intermediate separation retaining wall is arranged on the opposite surface of the cover plates, the intermediate separation retaining wall divides the threading cavity into two threading holes for threading, and the two intermediate separation retaining walls are in contact or staggered intersection or opposite and are provided with gaps. The beneficial effects of the utility model are as follows: the interval retaining walls are in contact or staggered intersection or opposite to each other and provided with gaps, so that the shielding performance of the shielding piece is improved; the angle between the step surface formed between the splicing section and the branching section and the stiffening platform is 90 degrees plus or minus 5 degrees, so that the space between the shielding piece A and the two core wires is reduced, the impedance is improved, and the electrical performance of the connector is improved.

Description

Shielding piece and shielding assembly

Technical Field

The present utility model relates to differential electrical connectors, and more particularly to a shield and a shield assembly.

Background

Differential signals are typically represented by a pair of conductors identified as V+ and V-, where V+ is greater than V-, the signal is defined as the positive signal and V+ is less than V-, the signal is defined as the negative signal. When a differential signal scheme is adopted instead of a single-ended signal, a pair of wires is used to replace a single wire, and although the complexity of the related interface circuit is increased, the differential signal has a plurality of advantages of strong interference resistance, effective EMI suppression and the like, so that the differential signal is increasingly applied.

Currently, a relatively widely used differential signal is a low voltage differential signal LVDS, and the transmission rate supported by such a signal is generally above 155Mbps (about 77 MHz). LVDS is a low swing differential signaling technology that enables signals to be transmitted at rates of several hundred Mbps over differential PCB wire pairs or balanced cables with low voltage amplitude and low current drive output achieving low noise and low power consumption.

However, the existing differential connector has poor shielding performance, and the impedance at the male-female end insertion contact and the impedance from the crimping twisted pair section to the separating twisted pair section are larger in abrupt change, so that the electrical performance is poor.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a shielding piece and a shielding assembly.

The aim of the utility model is achieved by the following technical scheme: the utility model provides a shield, it has branch line section, crimping section and grafting section, the rear end and the crimping section of branch line section are connected, the front end and the grafting section of branch line section are connected, the branch line section comprises two apron that set up relatively, form the threading chamber between two apron, be provided with the middle barricade that separates on the opposite face of apron, and the middle barricade that separates with the threading chamber and split into two through wires holes that are used for the threading, contact or dislocation alternately or just have the gap between two middle barricades.

Optionally, the outer side wall of the cover plate is provided with an axially extending groove, the rear end of the groove is provided with a stiffening platform, the branch line sections are smaller than the crimping section and the inserting section, and the angle between the step surface formed between the inserting section and the branch line section and the stiffening platform is 90+/-5 degrees.

The utility model provides a shielding assembly, includes shield A, shield B, insulator, inner conductor and paired line, and shield A is above-mentioned shield, and the inner conductor is installed in the insulator, and the insulator is installed in shield B, and shield A's grafting section inserts in the shield B, and in the back end of insulator inserts the grafting section, wears to be equipped with the heart yearn of paired line in the separated time section, and the heart yearn of paired line is connected with corresponding inner conductor.

Optionally, a shielding member C is sleeved on the twisted pair wire in the crimping section of the shielding member a, the shielding member C is located in the crimping section, and the shielding layer of the twisted pair wire penetrates out from the inner side wall of the shielding member C and is crimped between the crimping section and the shielding member C.

Optionally, the shielding member B is provided with a necking section, an elastic contact section and a compacting section, the front end of the insulator sequentially penetrates through the compacting section, the elastic contact section and is abutted to the step surface of the necking section and the step surface of the elastic contact section, a limiting block B is arranged on the insulator positioned in the compacting section, and the front end surface of the inserting section is abutted to the limiting block B.

Optionally, a limiting notch is formed at the front end of the plugging section, and the limiting block B is clamped into the limiting notch and is abutted to the limiting notch.

Optionally, a slot is formed in the front end wall of the elastic contact section, the slot extends to the joint of the elastic contact section and the necking section, a plurality of elastic contact arms are formed in the rear end wall of the slot, the elastic contact arms axially extend, and the front ends of the elastic contact arms are provided with convex contact heads.

Optionally, a plurality of outward tilting elastic pieces are arranged on the rear end face of the necking section, and the elastic pieces are positioned in the slotted holes on the lower projection surface.

Optionally, a positioning gap is formed between two adjacent elastic sheets, and a limiting block A clamped in the positioning gap is arranged at the front end of the insulator.

Optionally, two slots a and two slots B are formed on the insulator in the elastic contact section, the two slots a and the two slots B are symmetrical with each other with respect to the stopper a, and the slots a are located in front of the slots B.

The utility model has the following advantages:

1. according to the shielding piece, the middle separation retaining walls are in contact or staggered intersection or opposite to each other and are provided with gaps, so that the shielding performance of the shielding piece is improved;

2. the angle between the step surface formed between the splicing section and the branching section and the stiffening platform is 90 degrees plus or minus 5 degrees, so that the space between the shielding piece A and the two core wires is reduced, the impedance is improved, and the electrical performance of the connector is improved.

Drawings

FIG. 1 is a schematic view of a shielding assembly;

FIG. 2 is a schematic cross-sectional view of a shielding assembly;

fig. 3 is a schematic structural view of a shield a;

fig. 4 is a schematic diagram of a second structure of the shielding member a;

FIG. 5 is a schematic cross-sectional view of B-B of FIG. 4;

fig. 6 is a schematic view of a structure in which twisted pairs are mounted in a shield a;

fig. 7 is a schematic structural view of an insulator;

fig. 8 is a schematic structural view of the shield B;

FIG. 9 is an exploded view of the shield assembly after crimping;

FIG. 10 is an exploded view of the shield assembly prior to crimping;

in the figure, 200-shielding member B, 201-necking section, 202-elastic contact section, 203-compressing section, 204-elastic contact arm, 205-elastic sheet, 206-positioning notch, 300-insulator, 301-limiting block A, 302-limiting block B, 303-slot A, 304-slot B, 400-shielding member A, 500-inner conductor, 600-shielding member C, 700-twisted pair, 701-shielding layer, 702-core wire, 401-inserting section, 402-parting section, 403-crimping section, 404-limiting notch, 405-stiffening platform, 4021-threading hole, 4022-cover plate and 4023-middle partition retaining wall.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

In addition, the embodiments of the present utility model and the features of the embodiments may be combined with each other without collision.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, or are directions or positional relationships conventionally understood by those skilled in the art, are merely for convenience of describing the present utility model and for simplifying the description, and are not to indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, 2, 9 and 10, a shielding assembly includes a shielding member a400, a shielding member B200, an insulator 300, an inner conductor 500 and a twisted pair 700, in this embodiment, as shown in fig. 3 and 4, the shielding member a400 has a parting line section 402, a crimping section 403 and a plugging section 401, the rear end of the parting line section 402 is connected with the crimping section 403, the front end of the parting line section 402 is connected with the plugging section 401, as shown in fig. 5, the parting line section 402 is composed of two cover plates 4022 oppositely arranged, a threading cavity is formed between the two cover plates 4022, an intermediate partition wall 4023 is arranged on the opposite surfaces of the cover plates 4022, and the threading cavity is divided into two threading holes 4021 for threading by the intermediate partition wall 4023, and the two intermediate partition walls 4023 are in contact or dislocation intersection or opposite and have gaps, thereby the shielding performance of the shielding member a400 is improved, as shown in fig. 3, the outer side wall of the cover plate 4022 is provided with an axially extending groove, the rear end of the groove is provided with a stiffening platform 405, the branch line segments 402 are smaller than the compression joint segment 403 and the plug segment 401, the angle between the step surface formed between the plug segment 401 and the branch line segment 402 and the stiffening platform 405 is 90 degrees+/-5 degrees, as shown in fig. 6, when the core wire 702 of the twisted pair 700 is arranged in the threading hole 4021 in a penetrating way, the space between the shielding piece A400 and the two core wires 702 is reduced, the impedance is improved, and the electrical performance of the connector is improved, in the embodiment, as shown in fig. 3, the shielding piece A400 is of an integrally formed structure, the section of the plug segment 401 is of a runway shape after the shielding piece A400 is manufactured, and the two cover plates 4022 are provided with splice joints, the splice joints are positioned at the left side and the right side of the branch line segments 402, wherein the two splice joints extend towards the plug segment 401, so that the plug segment 401 is divided into two parts which are symmetrical up and down by the splice joints, and one of the splice joints extends to the rear end of the crimp segment 403, preferably, as shown in fig. 3 and 10, the splice joint on the crimp segment 403 has a concave-convex structure, and the concave-convex structure can play a role in positioning when the crimp segment 403 is deformed by crimping, so as to avoid axial dislocation of the shielding piece.

In this embodiment, as shown in fig. 2, the inner conductor 500 is installed in the insulator 300, the insulator 300 is installed in the shield B200, the plug section 401 of the shield a400 is inserted into the shield B200, and the rear end of the insulator 300 is inserted into the plug section 401, the core wire 702 of the twisted pair 700 is penetrated into the wire dividing section 402, and the core wire 702 of the twisted pair 700 is connected with the corresponding inner conductor 500, when the inner conductor 500 is installed, the insulator 300 is installed in the shield B200, and finally the plug section 401 of the shield a400 is inserted into the shield B200, and when the plug section 401 is inserted into the shield B200, the plug section 401 has a slight inward deformation, so that the plug section 401 has a certain elastic restoring force, and when the plug end is inserted into the shield B200, the plug end can make reliable contact with the shield B200 under the elastic restoring force, so that the shield a400 and the shield B200 have reliable contact performance.

In this embodiment, as shown in fig. 2, the twisted pair 700 located in the crimp section 403 of the shield a400 is sleeved with the shield C600, the shield C600 is located in the crimp section 403, and the shielding layer 701 of the twisted pair 700 penetrates out from the inner side wall of the shield C600 and is crimped between the crimp section 403 and the shield C600, so that the shield a400, the shielding layer 701 and the shield C600 are connected to each other, and the shielding performance of the shielding assembly is ensured.

In this embodiment, as shown in fig. 8, the shielding member B200 has a necking section 201, an elastic contact section 202 and a pressing section 203, the front end of the insulator 300 sequentially passes through the pressing section 203, the elastic contact section 202 and abuts against the step surface of the necking section 201 and the elastic contact section 202, a limiting block B302 is disposed on the insulator 300 located in the pressing section 203, the front end surface of the plug section 401 abuts against the limiting block B302, so that the limiting block B302 has a stop function, when the plug section 401 is inserted, the limiting block B302 abuts against the plug section 401, then the plug section 401 is indicated to be inserted in place, further, a limit notch 404 is formed at the front end of the plug section 401, and the limiting block B302 is clamped into the limit notch 404 and abuts against the limit notch 404, so that the limiting block B302 also has positioning and rotation stopping functions, and when the plug section 401 is mounted, the plug section 401 cannot rotate circumferentially relative to the pressing end.

In this embodiment, as shown in fig. 8, a slot is formed on the front end wall of the elastic contact section 202, the slot extends to the joint of the elastic contact section 202 and the necking section 201, a plurality of elastic contact arms 204 are formed on the rear end wall of the slot, the elastic contact arms 204 extend axially, the front ends of the elastic contact arms 204 are provided with convex contact heads, and in the installation process of the shielding component, the elastic contact arms 204 are compressed and deformed inwards after the shielding component is installed on the shell of the female connector, so that the elastic contact arms 204 have elastic restoring force, and when the shielding component is installed, the contact heads can always contact with the shell under the action of the elastic restoring force, thereby ensuring the shielding performance of the shielding component.

In this embodiment, as shown in fig. 8, a plurality of outward tilting elastic pieces 205 are disposed on the rear end surface of the necking section 201, and on the lower projection surface, the elastic pieces 205 are located in the slots, during the installation process of the shielding component, the elastic pieces 205 are compressed downward, and then the elastic pieces 205 have elastic restoring force, and when the shielding component is installed, the elastic pieces 205 are contacted with the housing under the action of the elastic restoring force, so as to further ensure the shielding performance of the shielding component.

In this embodiment, as shown in fig. 8, a positioning notch 206 is formed between two adjacent elastic sheets 205, a stopper a301 that is clamped into the positioning notch 206 is provided at the front end of the insulator 300, preferably, two elastic sheets 205 are provided in one slot, and the two elastic sheets 205 are symmetrical with respect to the positioning notch 206, and positioning and mounting of the insulator 300 and the shielding member B200 can be achieved through cooperation of the positioning notch 206 and the stopper a 301.

In this embodiment, as shown in fig. 7, two slots a303 and two slots B304 are formed in the insulator 300 located in the elastic contact section 202, the two slots a303 and the two slots B304 are symmetrical with each other with respect to the limiting block a301, the slot a303 is located in front of the slot B304, and the slots a303 and B304 can match the impedance of the connector, so as to improve the electrical performance of the connector.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (10)

1. A shield, characterized by: the wire-splitting device comprises a wire-splitting section, a crimping section and an inserting section, wherein the rear end of the wire-splitting section is connected with the crimping section, the front end of the wire-splitting section is connected with the inserting section, the wire-splitting section is composed of two cover plates which are oppositely arranged, a wire-threading cavity is formed between the two cover plates, a middle separation retaining wall is arranged on the opposite surface of each cover plate, the middle separation retaining wall divides the wire-threading cavity into two wire-threading holes used for threading, and the two middle separation retaining walls are in contact or staggered intersection or opposite and are provided with gaps.

2. A shield according to claim 1, wherein: the outer side wall of the cover plate is provided with an axially extending groove, the rear end of the groove is provided with a stiffening platform, the branching sections are smaller than the crimping sections and the inserting sections, and the angle between the step surface formed between the inserting sections and the branching sections and the stiffening platform is 90+/-5 degrees.

3. A shielding assembly, characterized by: the novel shielding device comprises a shielding piece A, a shielding piece B, an insulator, an inner conductor and a twisted pair, wherein the shielding piece A is any one of claims 1-2, the inner conductor is installed in the insulator, the insulator is installed in the shielding piece B, a plug-in section of the shielding piece A is inserted into the shielding piece B, the rear end of the insulator is inserted into the plug-in section, a core wire of the twisted pair is arranged in a split section in a penetrating manner, and the core wire of the twisted pair is connected with the corresponding inner conductor.

4. A shielding assembly according to claim 3, wherein: the twisted pair wire positioned in the crimping section of the shielding piece A is sleeved with a shielding piece C, the shielding piece C is positioned in the crimping section, and a shielding layer of the twisted pair wire penetrates out of the inner side wall of the shielding piece C and is crimped between the crimping section and the shielding piece C.

5. A shielding assembly according to claim 4, wherein: the shielding piece B is provided with a necking section, an elastic contact section and a pressing section, the front end of the insulator sequentially penetrates through the pressing section, the elastic contact section and the step surface butt joint of the necking section and the elastic contact section, a limiting block B is arranged on the insulator in the pressing section, and the front end surface of the inserting section is butt joint with the limiting block B.

6. A shielding assembly according to claim 5, wherein: the front end of the plug-in section is provided with a limiting notch, and the limiting block B is clamped into the limiting notch and is abutted to the limiting notch.

7. A shielding assembly according to claim 5, wherein: the front end wall of the elastic contact section is provided with a slot hole, the slot hole extends to the joint of the elastic contact section and the necking section, the rear end wall of the slot hole is provided with a plurality of elastic contact arms, the elastic contact arms axially extend, and the front ends of the elastic contact arms are provided with convex contact heads.

8. A shielding assembly according to claim 7, wherein: the rear end face of the necking section is provided with a plurality of outward tilting elastic pieces, and the elastic pieces are positioned in the slotted holes on the lower projection surface.

9. A shielding assembly according to claim 8, wherein: a positioning gap is formed between two adjacent elastic sheets, and a limiting block A clamped in the positioning gap is arranged at the front end of the insulator.

10. A shielding assembly according to claim 9, wherein: two slotted holes A and two slotted holes B are formed in the insulator positioned in the elastic contact section, the two slotted holes A and the two slotted holes B are symmetrical relative to the limiting block A, and the slotted holes A are positioned in front of the slotted holes B.