阅读说明：本技术 背板连接器 (Back panel connector ) 是由 牛林 于 2019-11-12 设计创作，主要内容包括：本申请涉及一种背板连接器,应用于连接器技术领域,包括底板；设置在底板上的差分信号针,每两个差分信号针组成一组差分对；设置在底板上并包围差分对的屏蔽系统；屏蔽系统包括至少一个屏蔽单元,各屏蔽单元包括至少一个开口方向一致的U型屏蔽片,一个封口屏蔽片和接地金属连接片,其中,封口屏蔽片设置在沿开口方向的最后一个U型屏蔽片的开口侧,各U型屏蔽片三面包围一组差分对,且沿开口方向的最后一组差分对被U型屏蔽片和封口屏蔽片形成四面包围；接地金属连接片一端接地,另一端接触同一屏蔽单元中的呈第一方向排列的各U型屏蔽片及封口屏蔽片,或者,另一端接触不同屏蔽单元中的呈第二方向排列的各U型屏蔽片和封口屏蔽片。(The application relates to a backplane connector, which is applied to the technical field of connectors and comprises a backplane; the differential signal pins are arranged on the bottom plate, and every two differential signal pins form a group of differential pairs; a shielding system disposed on the backplane and surrounding the differential pair; the shielding system comprises at least one shielding unit, each shielding unit comprises at least one U-shaped shielding sheet with the same opening direction, a sealing shielding sheet and a grounding metal connecting sheet, wherein the sealing shielding sheet is arranged on the opening side of the last U-shaped shielding sheet along the opening direction, three sides of each U-shaped shielding sheet surround one group of differential pairs, and the last group of differential pairs along the opening direction are surrounded by the U-shaped shielding sheet and the sealing shielding sheet in four sides; one end of the grounding metal connecting sheet is grounded, and the other end of the grounding metal connecting sheet is contacted with the U-shaped shielding sheets and the sealing shielding sheets which are arranged in the same shielding unit in the first direction, or the other end of the grounding metal connecting sheet is contacted with the U-shaped shielding sheets and the sealing shielding sheets which are arranged in different shielding units in the second direction.)

1. A backplane connector, comprising:

a base plate;

the differential signal pins are arranged on the bottom plate, and every two differential signal pins form a group of differential pairs;

a shielding system disposed on the backplane and surrounding the differential pair;

the shielding system comprises at least one shielding unit, each shielding unit comprises at least one U-shaped shielding sheet with the same opening direction and a sealing shielding sheet, wherein the sealing shielding sheet is arranged on the opening side of the last U-shaped shielding sheet in the opening direction, a group of differential pairs is surrounded on three sides of the U-shaped shielding sheets, and the differential pairs are surrounded on four sides by the U-shaped shielding sheets and the sealing shielding sheets in the opening direction.

2. The backplane connector of claim 1, wherein the cover shield is I-shaped, L-shaped, or U-shaped.

3. The backplane connector of claim 2, wherein if the cover shield blades are I-shaped, the plurality of cover shield blades in different ones of the shield units are stamped and formed from a unitary piece of sheet metal.

4. The backplane connector of claim 1, wherein the shielding unit further comprises: and one end of the grounding metal connecting sheet is grounded, and the other end of the grounding metal connecting sheet is contacted with the U-shaped shielding sheets and the sealing shielding sheets which are arranged in the same shielding unit in the first direction, or the other end of the grounding metal connecting sheet is contacted with the U-shaped shielding sheets and the sealing shielding sheets which are arranged in different shielding units in the second direction.

5. The backplane connector of claim 4, wherein the bottom of the U-shaped shield strip, the cover shield strip and the grounding metal connecting strip each include a grounding terminal for connection with a grounding circuit of the connector, the bottom being a side facing the backplane.

6. The backplane connector of claim 1,

the top of the sealing shielding piece is provided with a guide structure, the top is the other side opposite to the bottom, and the bottom is the side facing the bottom plate.

7. The backplane connector of claim 4, wherein the U-shaped shielding plate is provided with spring pieces on two sides thereof, and the grounding metal connecting plate is provided with a fixing portion at a position corresponding to the spring pieces, or the grounding metal connecting plate is provided with spring pieces on two sides thereof, and the U-shaped shielding plate is provided with a fixing portion at a position corresponding to the U-shaped shielding plate so as to contact the fixing portion through the spring pieces.

8. The backplane connector of claim 3, wherein the connector is enclosed in a plastic housing, and the cover shield sequentially comprises: the sealing shielding piece comprises a top guide structure, a sealing shielding piece main body, a connecting part of the sealing shielding piece, a stamping boss of the sealing shielding piece and a grounding terminal of the sealing shielding piece; the connecting part is used for connecting the sealing shielding sheets in different shielding units, and the stamping boss is used for increasing the holding force of the plastic shell.

9. The backplane connector of claim 1, wherein the connector is enclosed in a plastic housing, and the U-shaped shielding plate comprises in sequence: the shielding structure comprises a top guide structure, a left side wall of a U-shaped shielding sheet, a right side wall of the U-shaped shielding sheet, a bottom side wall of the U-shaped shielding sheet, a stamping boss of the U-shaped shielding sheet and a grounding terminal of the U-shaped shielding sheet; the stamping boss is used for increasing the holding force with the plastic shell.

10. The backplane connector of claim 4, wherein the connector is enclosed within a plastic housing, the grounding metal tab comprising in sequence: the grounding terminal of the grounding metal connecting sheet, the clamping structure of the grounding metal connecting sheet and the assembling buckle position of the grounding metal connecting sheet; the clamping structure of the grounding metal connecting sheet is used for clamping the grounding metal connecting sheet on the sealing shielding sheet, and the assembling buckling position of the grounding metal connecting sheet is used for assembling the grounding metal connecting sheet on the shell.

Technical Field

The invention relates to the technical field of connectors, in particular to a backplane connector.

Background

Backplane connectors are used to transmit high-speed signals and therefore need to minimize crosstalk between differential signals, and generally, backplane connectors include a plurality of differential pairs, each of which is formed by two differential signal pins, and a plurality of shields surrounding the corresponding differential pair to provide electromagnetic shielding for the corresponding differential pair.

Disclosure of Invention

Accordingly, the present invention is directed to a backplane connector that at least partially overcomes the problems of the related art.

In order to solve the technical problems, the invention adopts the following technical scheme:

the application provides a backplane connector, its characterized in that includes:

a base plate;

the differential signal pins are arranged on the bottom plate, and every two differential signal pins form a group of differential pairs;

a shielding system disposed on the backplane and surrounding the differential pair;

the shielding system comprises at least one shielding unit, each shielding unit comprises at least one U-shaped shielding sheet with the same opening direction and a sealing shielding sheet, wherein the sealing shielding sheet is arranged on the opening side of the last U-shaped shielding sheet in the opening direction, a group of differential pairs is surrounded on three sides of the U-shaped shielding sheets, and the differential pairs are surrounded on four sides by the U-shaped shielding sheets and the sealing shielding sheets in the opening direction.

Optionally, the sealing shielding sheet is I-shaped, L-shaped or U-shaped.

Optionally, if the shielding plate is of an I-shape, different from the shielding unit, the shielding plate is formed by stamping a single integral metal plate.

Optionally, the shielding unit further includes: and one end of the grounding metal connecting sheet is grounded, and the other end of the grounding metal connecting sheet is contacted with the U-shaped shielding sheets and the sealing shielding sheets which are arranged in the same shielding unit in the first direction, or the other end of the grounding metal connecting sheet is contacted with the U-shaped shielding sheets and the sealing shielding sheets which are arranged in different shielding units in the second direction.

Optionally, the bottom of the U-shaped shielding plate, the bottom of the sealing shielding plate, and the bottom of the grounding metal connecting plate all include a grounding terminal, the grounding terminal is used for being connected with a grounding circuit of the connector, and the bottom is the side facing the bottom plate.

Optionally, a guide structure is disposed at the top of the sealing shielding plate, the top is the other side opposite to the bottom, and the bottom is the side facing the bottom plate.

Optionally, elastic pieces are arranged on two sides of the U-shaped shielding piece, and the grounding metal connecting piece and the corresponding position of the elastic piece are set as fixed parts, or the elastic pieces are arranged on two sides of the grounding metal connecting piece, and the corresponding position of the U-shaped shielding piece is provided with a fixed part so as to contact with the fixed part through the elastic pieces.

Optionally, the connector seals in the plastic casing, the sealing shielding piece includes in proper order: the sealing shielding piece comprises a top guide structure, a sealing shielding piece main body, a connecting part of the sealing shielding piece, a stamping boss of the sealing shielding piece and a grounding terminal of the sealing shielding piece; the connecting part is used for connecting the sealing shielding sheets in different shielding units, and the stamping boss is used for increasing the holding force of the plastic shell.

Optionally, the connector seals in the plastic casing, U type shielding piece includes in proper order: the shielding structure comprises a top guide structure, a left side wall of a U-shaped shielding sheet, a right side wall of the U-shaped shielding sheet, a bottom side wall of the U-shaped shielding sheet, a stamping boss of the U-shaped shielding sheet and a grounding terminal of the U-shaped shielding sheet; the stamping boss is used for increasing the holding force with the plastic shell.

Optionally, the connector seals in the plastic casing, ground connection metal connection piece includes in proper order: the grounding terminal of the grounding metal connecting sheet, the clamping structure of the grounding metal connecting sheet and the assembling buckle position of the grounding metal connecting sheet; the clamping structure of the grounding metal connecting sheet is used for clamping the grounding metal connecting sheet on the sealing shielding sheet, and the assembling buckling position of the grounding metal connecting sheet is used for assembling the grounding metal connecting sheet on the shell.

By adopting the technical scheme, the invention can realize the following technical effects: the backplane connector of the application arranges the differential signal pins on the bottom plate, every two differential signal pins form a group of differential pairs, and the differential pairs are surrounded by the shielding system, wherein, the shielding system comprises at least one shielding unit, each shielding unit comprises at least one U-shaped shielding sheet with the same opening direction and one sealing shielding sheet, because the sealing shielding sheet is arranged at the opening side of the last U-shaped shielding sheet along the opening direction, each U-shaped shielding sheet surrounds a group of differential pairs on three sides, and the last group of differential pairs along the opening direction is surrounded by the U-shaped shielding sheet and the sealing shielding sheet on four sides, thus, the opening directions of the U-shaped shielding sheets are consistent, so that a group of differential pairs can be surrounded by three sides of the U-shaped shielding sheet, and the opening position is sealed by the bottom side wall of the U-shaped shielding sheet surrounding the group of differential pairs in front, thus, a four-side surrounding structure can be formed for the differential pair; in addition, the last group of differential pairs along the opening direction is surrounded by the U-shaped shielding sheet and the sealing shielding sheet in four sides, so that each differential pair on the bottom plate can be surrounded by the U-shaped shielding sheet and/or the sealing shielding sheet in four sides, compared with a two-side surrounding structure or a three-side surrounding structure in the prior art, the situation that one side is open under electromagnetic interference cannot occur, and the shielding performance and the shielding effect are better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a backplane connector according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a backplane connector according to another embodiment of the present invention;

fig. 3 is a schematic structural diagram of a backplane connector according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram of a backplane connector according to another embodiment of the present invention;

fig. 5 is a schematic structural diagram of a backplane connector according to another embodiment of the present invention;

fig. 6 is a schematic structural diagram of a sealing cover shielding plate in a backplane connector according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a U-shaped shielding plate in a backplane connector according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a ground metal connecting piece in a backplane connector according to an embodiment of the present invention.

Reference numerals:

100-plastic shell, 101-bottom plate, 102-U-shaped shielding plate, 103-sealing shielding plate, 104-differential signal pin, 105-grounding metal connecting plate, 201-grounding terminal of U-shaped shielding plate, 202-, limiting part of U-shaped shielding plate, 203-left side wall elastic sheet of U-shaped shielding plate, 204-right side wall elastic sheet of U-shaped shielding plate, 205-stamping lug boss of U-shaped shielding plate, 206-top guide structure of U-shaped shielding plate, 207-left side wall of U-shaped shielding plate, 208-right side wall of U-shaped shielding plate, 209-bottom side wall of U-shaped shielding plate, 301-top guide structure of sealing shielding plate, 302-main body of sealing shielding plate, 303-connecting part of sealing shielding plate, 304-stamping lug boss of sealing shielding plate, 305-grounding terminal of sealing plate, 501-grounding terminal of grounding metal connecting plate, 502-grounding metal connecting plate clamping structure, 503-small fastening position of grounding metal connecting plate, 504-assembly plastic large buckling position of the grounding metal connecting sheet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.