WO2016107427A1

WO2016107427A1 - Backplane, double-sided inserted backplane and cross board

Info

Publication number: WO2016107427A1
Application number: PCT/CN2015/097914
Authority: WO
Inventors: 刘会田; 刘雨
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-12-30
Filing date: 2015-12-18
Publication date: 2016-07-07
Also published as: CN105813414A

Abstract

Disclosed is a backplane, comprising a backplane body (5), a first back drill hole (502) arranged at the front side of the backplane body (5), a through-hole (501) penetrating through the front and back of the backplane body (5), and a second back drill hole (503) arranged at the back side of the backplane body (5), wherein first electric pins (504) are fixed into the first back drill hole (502) and the second back drill hole (503); a second electric pin (505) penetrating through the front and back of the backplane body (5) is arranged inside the through-hole (501); the first electric pin (504) in the first back drill hole (502) and the second electric pin (505) at the front side of the backplane body (5) form a cross board connector (3); and the first electric pin (504) inside the second back drill hole (503) and the second electric pin (505) at the back side of the backplane body (5) form a backplane connector (4). With this backplane, the cross-transmission rate is increased, and the production cost is reduced.

Description

Backboard, double-sided backplane, and cross-board

Technical field

This document relates to, but is not limited to, a backplane, a double-sided backplane, and a crossover.

Background technique

The existing communication device requires more boards, higher board access service capacity, higher transmission rate, and switching network board capacity. Therefore, the backplane needs to provide more board slots in a limited space. In order to solve the bottleneck of the switching capacity of the device, in the case of fixed bus bus speed and switching capacity of the existing switching chip, the double-sided plug-in backplane structure is generally adopted, in the related art. As shown in FIG. 1 , the double-sided backplane structure includes a first backplane body 5 and a second backplane body 6. The front surface of the first backplane body 5 is provided with a plurality of cross-board connectors 3, and a first backplane body. A plurality of backplane connectors 4 are disposed on the reverse side of the second backplane body 6. The front panel of the second backplane body 6 is provided with a plurality of backplane connectors 4, and the first backplane body 5 is mounted on the reverse side of the second backplane body 6. The second backplane body 6 is connected to the respective backplane connector 4. However, due to the continuous increase in the transmission rate, the design structure has the following drawbacks:

The cross-board connector 3 of the first backplane body 5 to the cross-board connector 3 of the second backplane body 6 passes through at least four via holes, and the excessive via holes may cause impedance discontinuity, insertion loss, and return loss. And other problems; and in high-speed transmission applications, the vias on the backplane must be back-drilled to reduce the return loss, while the back-drilling also increases the cost of the backplane; the backplane has many vias and the connector occupies The area is large, reducing the backplane wiring density.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

Embodiments of the present invention provide a backplane, a double-sided backplane, and a crossover board to solve the technical problem of how to increase the rate of cross-transmission.

The technical solution adopted by the embodiment of the present invention is a backplane, including a backplane body, a first back hole disposed on a front surface of the backboard body, a through hole penetrating through the front and back sides of the backboard body, and a second back hole disposed on the back surface of the back plate body, wherein the first back hole and the second back hole are fixed with a first electrical pin, and the through hole is provided through the back a second electrical pin on the front and back sides of the board body, a first electrical pin in the first back hole and a second electrical pin on the front side of the back plate body form a cross-board connector The first electrical pin in the second back hole and the second electrical pin on the opposite side of the back plate body form a backplane connector.

Optionally, the second electrical pin on the front side of the backplane body has the same number as the first electrical pin in the first back hole, and the second electrical component on the reverse side of the backplane body The number of the first pins is the same as the number of the first electrical pins in the second back hole.

Optionally, the second electrical pins are two pins that are integrally formed or electrically connected to each other.

Optionally, at least two of the cross-board connectors are disposed on a front surface of the backplane body, and at least two of the backplane connectors are disposed on a reverse side of the backplane body.

Optionally, four front panel connectors are disposed on a front surface of the backplane body, and four backplane connectors are disposed on a reverse side of the backplane body.

Optionally, the first electrical pins in the first back hole and the first electrical pins in the second back hole are respectively located on two sides of the second electrical pin.

A double-sided plug backplane comprising two backplanes as described above, the backplane connectors of the two backplanes being mated.

Optionally, a fastener is disposed between the two back plates.

Optionally, a backplane connector positioning member is disposed between the two backplanes.

A cross board includes a cross board body and a double-sided plug back board as described above, and a signal socket on the cross board body is mated with a cross board connector on the double-sided plug back board.

The beneficial effects of the embodiments of the present invention are:

1. In the backplane of the embodiment of the present invention, since the connectors on the front and the back sides share the electrical through holes, at least four back drilling vias in the existing backplane are reduced to at least two, that is, the electrical through holes are replaced. The reduced 2 vias reduce the number of vias by 50% compared to the conventional method, reducing the loss in signal transmission, thereby improving signal transmission capability.

2. The backplane in the embodiment of the present invention has a connector on the front and back sides of the shared through hole, and there is no residual pile effect of the high-speed signal, so the through hole does not need to be back-drilled, and the number of back-drills of the backboard can be reduced as a whole. Reduce the production and processing costs of the backsheet.

3. The backplane in the embodiment of the present invention uses a common through hole for the connector on the front and back sides of the backboard, and the number of the backplane via holes is greatly reduced, thereby effectively increasing the wiring space of the backplane, and further improving the transmission signal of the backplane. the quality of.

4. The number of the second electrical pin of the backplane, the first electrical pin in the first back hole, and the first electrical pin in the second back hole are the same in the embodiment of the present invention. The cross-board on both sides of the double-sided plug-in board processes the same amount of data, that is, half of the cross-board on one side of the double-sided backplane is transferred to the cross-board on the other side, and the same cross-board on the other side is also required. Half of the data is transferred to the cross-board on one side. This design maximizes the cross-over capacity of the cross-board, which is equivalent to the superposition of the cross-over capacity of the two backplanes.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a cross-sectional view of a double-sided backing plate in the related art;

Figure 2 is a cross-sectional view of a back sheet of an embodiment of the present invention;

Figure 3 is a cross-sectional view of a back plate according to another embodiment of the present invention;

4 is a cross-sectional view of a double-sided insertion backing plate according to an embodiment of the present invention;

Figure 5 is a schematic diagram of the signal flow direction of Figure 4;

Figure 6 is a cross-sectional view of a double-sided insertion backing plate according to another embodiment of the present invention;

Figure 7 is a schematic diagram of the signal flow direction of Figure 6;

FIG. 8 is a schematic diagram of signal flow in a double-sided plug backplane according to still another embodiment of the present invention.

Embodiments of the invention

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

As shown in FIG. 2, a backplane includes a backplane body 5, and a through hole 501 is formed in the backplane body 5 through the front and back surfaces of the backplane body 5, on one side of the through hole 501. A first back hole 502 is opened on the front surface of the back plate body 5, and a second back hole 503 is opened on the other side of the through hole 501 and the back surface of the back plate body 5; the first back hole 502 and the second back hole Each of the holes 503 is provided with a first electrical pin 504. The through hole 501 is provided with a second electrical pin 505 extending through the front and back sides of the back plate body 5. The second electrical pin 505 is integrally formed. The first electrical pin 504 can be a male pin or a female pin, and the two ends of the second electrical pin 505 can be a male pin or a female pin, or one end can be a male pin and the other end can be a female pin. The first electrical pin 504 in the first back hole 502 and the second electrical pin 505 on the front side of the back plate body 5 constitute a cross-board connector, and the first electric in the second back hole 503 The second pin 505 on the opposite side of the back pin body 504 forms a backplane connector. The front side of the backplane body 5 is provided with at least two cross-board connectors, and at least two backs are provided on the reverse side. Board connection Optionally, the front panel body 5 has four cross-board connectors on the front side, and four back-plate connectors on the reverse side; the pin arrangement of the cross-board connectors is M rows×N columns, M and N is a natural number, and the two may be the same or different, but must be even. In the M row×N column pins, the first electrical pin 504 in the first back hole 502 and the front plate body 5 are front. The number of the second electrical pins 505 on one side is the same, that is, the number of the two pins occupies half of the M rows×N columns of pins; the arrangement of the pins of the backplane connector is the same as M rows×N columns, at M Among the pins of row × N, the number of the first electrical pins 504 in the second back hole 503 is the same as the number of the second electrical pins 505 on the reverse side of the back plate body 5, due to the second electrical pin The 505 is integrally formed, and the number of pins on the front and back sides of the back plate body 5 is the same, so the second electrical pin 505, the first electrical pin 504 in the first back hole 502, and the second back The number of pins of the first electrical pin 504 within the bore 503 is the same.

Another embodiment of the backplane of the present invention is based on the embodiment shown in FIG. 2, the first electrical pin 504 in the first back hole 502 and the second electrical plug on the front side of the back plate body 5 The number of pins 505 is different, and the number of the first electrical pins 504 in the second back hole 503 is different from the number of the second electrical pins 505 on the reverse side of the back plate body 5.

As shown in FIG. 3 , the second electrical pin 505 in the through hole 501 of the back plate body 5 includes two pins whose ends are electrically connected to each other, based on the embodiment shown in FIG. 2 . The second electrical pin 505 forms a cross-board connector 3 on the front side of the backplane body 5 and the first electrical pin 504 in the first back-drilled hole 502. The second electrical pin 505 is on the back. Pin on the reverse side of the board body 5 and the first The first electrical pins 504 in the two back bores 503 form a backplane connector.

As shown in FIG. 4 and FIG. 5, a double-sided backplane includes two backplanes 5, and the structural diagrams of the two backplanes 5 are shown in FIGS. There are four cross-board connectors 3 and four back-plate connectors 4 on the opposite sides, and the backplane connectors 4 of the two are matched and connected, and the pins of the cross-board connectors 3 of the two backplanes are arranged in the same manner. A rectangular array of M rows × N columns, wherein M and N are natural numbers, and the two may be the same or different, but may be even numbers. In the pins of M rows×N columns, the first back of the two back plates The arrangement of the first electrical pins 504 in the hole 502 is M rows × A columns, and the arrangement of the second electrical pins 505 on the front side of the two back plate bodies 5 is M rows × A columns, wherein A=1/2N; the backplane connectors 4 of the two backplanes are respectively formed by a socket of a rectangular array of pin rows of M rows×N columns, in the pins of M rows×N columns, two The arrangement of the first electrical pins 504 in the two back holes 503 is M rows × A columns, and the arrangement of the second electrical pins 505 on the reverse side of the two back plate bodies 5 is M rows × A columns. , such a design, so that the double-sided back The amount of data processed by the two-sided cross-board is the same, that is, half of the cross-board on one side of the double-sided backplane is transferred to the cross-board on the other side, and the same cross-board of the other side has half of the data transferred to The cross-board on one side maximizes the cross-over capacity of the cross-board, which is equivalent to the superposition of the cross-over capacity of the two backplanes.

Another embodiment of the double-sided gusset plate of the present invention is that a fastener and/or a back plate connector locating member is disposed between the two back plates, and the fasteners can be bolts, buttons, etc. Fixing the lateral positioning of the two backplanes; the backplane connector positioning members are the female and female connectors disposed on the two backplanes, facilitating the docking of the backplane connectors on the two backplanes.

6 and FIG. 7, a double-sided plug backplane, based on the embodiment shown in FIGS. 4 and 5, the first electrical pin 504 in the first back hole 502 The arrangement is B rows × N columns, and the arrangement of the second electrical pins 505 on the front side of the backplane body 5 is B rows × N columns, where B = 1/2 M; the second back hole 503 The arrangement of one of the electrical pins 504 is B rows × N columns, and the arrangement of the second electrical pins 505 on the reverse side of the back plate body 5 is B rows × N columns.

The embodiment shown in FIG. 8 is a double-sided insertion backplane. Based on the embodiment shown in FIG. 4 and FIG. 5, the backplane connector 4 in this embodiment is arranged by two pins. The rows of rows x A are arranged side by side, and the type of the backplane connector 4 in the present embodiment is improved relative to the embodiment of the backplane connector 4 consisting of a socket in which the arrangement of the pins is M rows × N columns. Large backplane connector The degree of freedom of placement of 4 increases the variety of double-sided inserts of the embodiment of the present invention.

The embodiment of the present invention provides a cross board, including a cross board body and a double-sided plug back board according to any of the above embodiments, a signal socket on the cross board body and a cross board on the double-sided back board The connector 3 is mated to transmit signals of the cross-board body through the double-sided plug backplane.

In the above embodiments, a backplane structure in which a common electrical via is stacked is provided. Since the connectors used share the electrical vias, the signals of the crossovers are directly transmitted through the connectors, and the number of vias is reduced by 50 compared with the conventional method. %, reduce the loss in signal transmission, thereby improving the signal transmission capability; since there are connectors on the front and back of the shared through hole, there is no residual pile effect of the high-speed signal, so there is no need to do back-drilling, and the overall back can be reduced by 66.7%. The number of drills reduces the production cost of the backplane; since the connector uses a common through hole, the number of through-holes of the backplane is greatly reduced, thereby effectively increasing the wiring space and further improving the quality of the transmission signal of the backplane.

While the embodiments of the present invention have been described above, the described embodiments are merely illustrative of the embodiments of the invention, and are not intended to limit the invention. Any modification and variation of the form and details of the invention may be made by those skilled in the art without departing from the spirit and scope of the invention. It is still subject to the scope defined by the appended claims.

Industrial applicability

The backplane in the above technical solution reduces the number of vias by 50% compared with the conventional method, reduces the loss in signal transmission, thereby improving the signal transmission capability; can reduce the number of backtracking of the backplane, and reduce the production and processing cost of the backplane; The number of holes is greatly reduced, which effectively increases the wiring space of the backplane, and further improves the quality of the signal transmitted by the backplane; the crossover capacity of the crossboard can be maximized, which is equivalent to the superposition of the crossover capacities of the two backplanes.

Claims

A backboard comprising:

a back plate body, a first back hole disposed on a front surface of the back plate body, a through hole penetrating through the front and back sides of the back plate body, and a second back hole disposed on a back surface of the back plate body, a first electrical pin is fixed in the first back hole and the second back hole, and the second hole is disposed in the through hole, and the second electrical pin is inserted through the front and back sides of the back plate body. a first electrical pin in a back hole and a second electrical pin on a front side of the back plate body form a cross-board connector, and the first electrical pin in the second back hole The second electrical pin on the reverse side of the backplane body constitutes a backplane connector.
The backplane of claim 1 , wherein the second electrical pin on the front side of the backplane body has the same number as the first electrical pin in the first back bore, the backplane The second electrical pin on one side of the back side of the body is the same number as the first electrical pin in the second back hole.
The back sheet of claim 1 wherein said second electrical pins are two pins that are integrally formed or electrically connected to each other.
The backplane of any one of claims 1-3, wherein at least two of the cross-board connectors are disposed on a front surface of the backplane body, and at least two of the backs are provided on a reverse side of the backplane body Board connector.
The backplane of any one of the preceding claims, wherein the front side of the backboard body is provided with four of the cross-board connectors, and the back surface of the backplane body is provided with four of the backplane connections. Device.
The backplane of any of claims 1-3, wherein the first electrical pin in the first back hole and the first electrical pin in the second back hole are located respectively The two sides of the second electrical pin are described.
A double-sided plug backplane comprising two backplanes according to any of claims 1-3, the backplane connectors of the two backplanes being mated.
A double-sided insert backing plate according to claim 7, wherein a fastener is disposed between the two back sheets.
The double-sided backplane of claim 7, wherein a backplane connector locating member is disposed between the two backplanes.
A cross board that includes:

A cross board body and the double-sided back board according to claim 7, wherein the signal socket on the cross board body is mated with the cross board connector on the double-sided back board.