CN210804234U - Backboard and electronic terminal - Google Patents

Abstract

The utility model provides a backplate and electronic terminal, the backplate includes: a circuit board; a first connector unit; the first connector unit comprises at least one group of first connector modules, and each group of the first connector modules comprises a front connector and a back connector; the pins in odd columns in the pin arrangement of the front connector and the pins in even columns in the pin arrangement of the back connector are arranged the same; the front connector is arranged on the front surface of the circuit board, the back connector is arranged on the back surface of the circuit board, and a row of pins staggered relative to the front connector are connected with the front connector. The utility model discloses in, the backplate positive and negative signal is direct, reduces to walk the line on the circuit board to reduce the signal and walk the required circuit board area sum number of piles of line, the backplate ventilation hole has left the biggest area, has strengthened the wind current.

Description

Backboard and electronic terminal

Technical Field

The utility model relates to an electronic equipment technical field especially relates to a backplate and electronic terminal.

Background

For servers, memories and industrial computers in the market currently having dual control modules and dual backplanes, the way to connect the two backplanes generally includes:

the method comprises the following steps: through cable (cable) connection, the design is simpler, but, when required cable figure is too much, with high costs, the system layout is in disorder, and later maintenance is inconvenient.

The method 2 comprises the following steps: the bridge plates are connected, the system layout is regular, the design of cable is avoided, the later maintenance is easy, and the cost is low compared with the cable connection mode. However, when the number of connectors on the backplane is too large, the feasibility may be reduced due to the lack of sufficient vent holes in the backplane.

The mode of connecting the two backplanes by the bridging circuit board is mainly used for the condition that the number of required connectors on the backplanes is small and the connectors can be completely staggered. When the number of connectors on the back panel is too large, a cable connection mode is generally adopted.

Fig. 1 and 2 illustrate a typical dual control module dual backplane system in which two backplanes are connected by a bridge circuit board.

The back plate 1 is used for connecting the control module 1 circuit board, the control module 2 circuit board and the bridge circuit board, and 3 plates in total, and the design is relatively complex. A large number of connectors are required to be placed on both sides of the backplane 1, as shown in fig. 3 and 4.

As can be seen in fig. 3 and 4, the connectors on both sides are optionally set back or offset from each other to avoid connector interference. Due to this arrangement, most of the area of the lower half of the backplane 1 is occupied by connectors on both the front and back sides. In addition, since extra routing space is required for signals from two control modules, as shown in fig. 5, the areas of the ventilation holes 11 and the ventilation holes 12 in the lower half of the back plate 1 are very small.

This layout of the backplane 1 may cause the following problems when more connectors are required:

1) in a limited server or storage enclosure space, the limited backplane length does not allow all connectors to be completely avoided, making the architecture impractical.

2) Even if the connectors on the front side and the back side are staggered with each other, the connectors may occupy a large part of the area of the back plate due to too many connectors, so that the area of the vent holes on the back plate is very limited, and the ventilation and heat dissipation requirements of the whole system cannot be met.

3) The signal traces from the two control modules need to occupy a certain circuit board area. Although, the area required for signal routing can be minimized by increasing the number of layers of the circuit board. However, increasing the number of layers of the circuit board will greatly increase the cost of the circuit board, thereby leading to an increase in the cost of the system.

SUMMERY OF THE UTILITY MODEL

In view of the above shortcomings of the prior art, an object of the present invention is to provide a backplane and an electronic terminal for solving the problems of large occupied area of wiring and small ventilation area when connectors are configured on both sides of the backplane in the prior art.

To achieve the above and other related objects, the present invention provides a back plate, comprising: a circuit board; a first connector unit; the first connector unit comprises at least one group of first connector modules, and each group of the first connector modules comprises a front connector and a back connector; the pins in odd columns in the pin arrangement of the front connector and the pins in even columns in the pin arrangement of the back connector are arranged the same; the front connector is arranged on the front surface of the circuit board, the back connector is arranged on the back surface of the circuit board, and a row of pins staggered relative to the front connector are connected with the front connector.

In an embodiment of the present invention, the first row of the front connector is connected in an air-tight manner, the second row to the nth row are correspondingly connected to the first row to the N-1 row of the back connector in sequence, and the nth row of the back connector is connected in an air-tight manner; or the first row of the back connector is in idle connection, the second row to the Nth row are correspondingly connected with the first row to the N-1 row of the front connector in sequence, and the Nth row of the front connector is in idle connection; n is a positive integer, and N is more than or equal to 2.

In an embodiment of the present invention, the first connector unit is disposed in any one of a left upper region, a middle upper region, a right upper region, a left lower region, a middle lower region, and a right lower region of the circuit board.

In an embodiment of the present invention, the back plate further includes: a second connector unit; the second connector unit comprises at least one set of second connector modules; every a set of the second connector module includes a front connector and a back connector, wherein, the front connector in the second connector module is located the front of circuit board, the back connector is located the back of circuit board and stagger whole the front connector.

In an embodiment of the present invention, the first connector unit is disposed at a middle upper portion or a middle lower portion of the circuit board; the front connectors of the second connection modules of the second connector units are arranged on the middle lower part or the middle upper part of the circuit board, and the back connectors are uniformly arranged on two sides of the back connectors in the first connector units.

In an embodiment of the present invention, the circuit board further includes a plurality of ventilation holes.

The embodiment of the utility model provides a still provide an electronic terminal, electronic terminal includes as above the backplate.

As described above, the utility model discloses a backplate and electronic terminal has following beneficial effect:

1. the utility model discloses in, the backplate positive and negative signal is direct, reduces to walk the line on the circuit board to reduce the signal and walk the required circuit board area sum number of piles of line, save the cost.

2. The utility model discloses in, the backplate positive and negative signal is straight to make the length of high speed signal line on the backplate shortest, furthest has reduced the signal attenuation of circuit board to high speed signal line, has improved signal quality.

3. The utility model discloses in, less signal is walked the line, and positive and negative two-sided connector coincidence has reserved the biggest area for the backplate ventilation hole, has strengthened the system wind and has flowed, has improved the heat dissipation of system.

4. The utility model discloses in, increase the vent area, can reduce the demand to system fan power to reduce the cost of system fan, further reduce system's cost.

Drawings

FIG. 1 is a rear view of a dual backplane system of a dual control module according to the prior art.

FIG. 2 is a top view of a dual backplane system of a dual control module according to the prior art.

Fig. 3 shows a front view of a prior art backplane.

Figure 4 shows a reverse side view of a prior art back plate.

Fig. 5 is a schematic diagram illustrating the layout and routing of a backplane and a connector in the prior art.

Fig. 6 is a schematic layout diagram of the circuit board and the connector of the middle back plate of the present invention.

Fig. 7 is a diagram illustrating an exemplary definition of signal pins of the connector according to the present invention.

Fig. 8a is a front view of the signal pin of the connector of the present invention on the back plate.

Fig. 8b is a reverse side view of the signal pins of the connector of the present invention on the back plate.

Fig. 9 is a perspective view showing the layout of the connector according to the present invention.

Fig. 10 is a schematic diagram of the layout and routing of the middle back plate and the connector according to the present invention.

Description of the element reference numerals

100 back plate

110 circuit board

120 first connector unit

121 front connector

122 reverse connector

130 second connector unit

131 front connector

132 reverse connector

141. 142 vent

11. 12 air vent

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

Please refer to fig. 6 to 10. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

An object of the embodiment of the utility model is to provide a backplate and electronic terminal for it is big to lay wire area of occupation when solving among the prior art the two-sided connector that all disposes of backplate, problem that draught area is little.

The principle and implementation of a backplane and an electronic terminal of the present embodiment will be described in detail below, so that those skilled in the art can understand a backplane and an electronic terminal of the present embodiment without creative work.

As shown in fig. 6, the present embodiment provides a back plate 100, where the back plate 100 at least includes: a circuit board 110 and a first connector unit 120.

The main function of the backplane 100 is to "carry" the circuit boards and distribute power, signal, etc. functions to each daughter board in order to obtain the appropriate electrical connections and signal transmission.

The circuit board 110 may adopt any structure of the circuit board 110 in the prior art, and the embodiment does not further describe the specific structure of the circuit board 110 itself.

In the present embodiment, the first connector unit 120 is used for connecting a control module (for example, the control module 2 mentioned in the background), and the first connector unit 120 includes at least one set of first connector modules.

The number of the first connector modules included in the first connector unit 120 is determined according to the control module to be connected. For example, as in fig. 6, the first connector unit 120 includes 4 first connector modules. The models of the first connector modules in each group are the same or at least one of the first connector modules in each group is different.

In the present embodiment, each set of the first connector modules includes a front connector 121 and a back connector 122; the front connector 121 and the back connector 122 include at least two rows of pins, the front connector 121 and the back connector 122 may be the same type of connector, and the number of rows of pins is the same, and the front connector 121 and the back connector 122 may also be different types of connectors, and the number of rows of pins is different.

The pins in odd columns in the pin arrangement of the front connector and the pins in even columns in the pin arrangement of the back connector are arranged the same; the front connector 121 is mounted on the front side of the circuit board 110, the back connector 122 is mounted on the back side of the circuit board 110, and a row of pins are staggered relative to the front connector 121 to connect with the front connector 121, so that signals on the front and back sides of the back plate 100 are directly communicated, wiring on the circuit board is reduced, the area and the number of layers of the circuit board required by signal wiring are reduced, cost is saved, the length of a high-speed signal wire on the back plate 100 is shortest, signal attenuation of the circuit board on the high-speed signal wire is reduced to the maximum extent, signal quality is improved, the largest area is reserved for a vent hole of the back plate 100, wind flow is enhanced, and heat dissipation is improved.

Specifically, in this embodiment, the first row of the front connectors 121 is connected in an idle manner, the second row to the nth row are sequentially connected to the first row to the N-1 row of the back connectors 122 in a corresponding manner, and the nth row of the back connectors 122 is connected in an idle manner; or the first row of the back side connector 122 is connected in an idle manner, the second row to the nth row are correspondingly connected with the first row to the N-1 row of the front side connector 121 in sequence, and the nth row of the front side connector 121 is connected in an idle manner; n is a positive integer, and N is more than or equal to 2.

In an embodiment, the first connector unit 120 is disposed in any one of a left upper region, a middle upper region, a right upper region, a left lower region, a middle lower region, and a right lower region of the circuit board 110.

In this embodiment, the back plate 100 further includes: a second connector unit 130. The second connector unit 130 is also used to connect a control module (e.g. the control module 1 mentioned in the background), in which case the back panel 100 can connect two control modules at the same time.

In this embodiment, the second connector unit 130 includes at least one set of second connector modules; each group of the second connector modules includes a front connector 131 and a back connector 132, wherein the front connector 131 of the second connector module is mounted on the front side of the circuit board 110, and the back connector 132 is mounted on the back side of the circuit board 110 and the whole front connector 131 is staggered.

In this embodiment, the number of the second connector modules included in the second connector unit 130 is specifically determined according to the control module to be connected. For example, as in fig. 6, the second connector unit 130 includes 4 second connector modules. The models of the second connector modules in each group are the same or at least one of the second connector modules in each group is different.

In the present embodiment, the first connector unit 120 is disposed on the middle upper portion or the middle lower portion of the circuit board 110; the front connectors 131 of the second connection module of the second connector unit 130 are disposed at the middle lower portion or the middle upper portion of the circuit board 110, and the back connectors 132 are uniformly disposed at two sides of the back connectors 122 of the first connector unit 120.

In this embodiment, the circuit board 110 further includes a plurality of vent holes, such as vent hole 141 and vent hole 142 shown in fig. 10.

The layout of the circuit board 110 and the connectors in the backplane 100 of the present embodiment will be described in detail by taking a Molex Impact 3pair series connector as an example.

From the connector pin definition diagram of fig. 7, it can be seen that: each column has 9 pins, with 3 pairs of differential signal pins (white dots in the lower diagram) and 3 ground pins (black dots in the lower diagram). The 3 pairs of differential signals for the odd and even columns are offset by exactly one pin position in the horizontal direction. All ground pins of this type of connector are directly interconnected inside the connector body, with only 3 pairs of differential signal pins being independent of each other. In other words, all black dots are ground pins and can only be used as ground pins. The white point pin can be customized. Any other pin is connected with any one of the black dots, and is considered as a short circuit to the ground, so that a great risk exists in the circuit design.

Looking from left to right, a1 is the first pin in the first column. A10 is the first pin in the last or 10 th column. When the same set of connectors of this type is placed on both the front and back sides of the circuit board 110, it is found that the pins a1 and a10 of the two connectors on the front and back sides (front connector 121 and back connector 122) are exactly opposite. As shown in fig. 8a and 8 b.

As shown in the structure of the backplane 100 in this embodiment, if connectors on the front and back sides (the front connector 121 and the back connector 122) are staggered and arranged in a row back to back, 3 pairs of differential signal pins and 3 ground pins in each row can be completely mated and butted, so that signal through is achieved while the risk of short circuit is avoided.

As shown in fig. 9, taking 10 rows of connectors as an example, one implementation manner of the "the front connector 121 is mounted on the front surface of the circuit board 110, the back connector 122 is mounted on the back surface of the circuit board 110, and the front connector 121 is connected to the back connector 121 by staggering one row of pins with respect to the front connector 121" that is, "staggering back-to-back connection" is as follows: the 1 st column of the back connector A is in idle joint, the 2 nd column of the back connector A is in butt joint with the 10 th column of the front connector A, the 3 rd column of the back connector A is in butt joint with the 9 th column of the front connector A, the 4 th column of the back connector A is in butt joint with the 8 th column of the front connector A, and the like. Until the last row a10 of the back side connector a is mated with the row 2 of the front side connector a. Finally, column 1 of front connector A will also be left with a dummy connection.

Take the dual backplane 100 system with dual control modules as shown in FIG. 3 as an example. Before the staggered back-to-back connection method of the present embodiment is used, the circuit board 110 is laid out as shown in fig. 5. Signals from the two control modules occupy a large wiring area, and the vent area is small. To avoid the interference of the connectors on the front and back sides, the connectors on the front and back sides are completely staggered, and 3 sets of connectors on the front and back sides occupy most of the area of the lower portion of the circuit board 110.

After the staggered back-to-back connection of the circuit board 110 and the controller in the backplane 100 of the present embodiment is adopted, the layout of the backplane 100 is as shown in fig. 10. Only the second connector unit 130 (the control signal from the control module 1) needs to be routed on the circuit board 110, and through a staggered back-to-back layout mode, the signal of the first connector unit 120 (the control signal from the control module 2) is directly transmitted to the other side of the circuit board 110, the area of the area where the connectors on the front side and the back side are located is reduced by about 1/3 on the lower portion of the circuit board 110, the area required by routing is greatly reduced, and meanwhile, the area of the vent hole is increased.

The present embodiment also provides an electronic terminal, which includes the back plate 100 as described above. The backplane 100 is applied to an electronic terminal with two circuit boards 110 and two circuit boards 110 connected with each other by corresponding connectors, wherein the electronic terminal is a server, a memory, an industrial computer or the like. The back board 100 serves as a first circuit board of a dual-control module dual-circuit board system, and the first circuit board is connected to the first control module and the second control module and is connected to the second circuit board in a cable manner.

Furthermore, in order to highlight the innovative part of the present invention, the technical features that are not too closely related to the solution of the technical problem proposed by the present invention are not introduced in the present embodiment, but this does not indicate that there are no other structural and functional features in the present embodiment.

It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the invention in a schematic manner, and only the components related to the invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

To sum up, in the utility model, the signals on the front and back sides of the back plate are directly communicated, and the wiring on the circuit board is reduced, so that the area and the number of layers of the circuit board required by the signal wiring are reduced, and the cost is saved; the utility model discloses in, the backplate positive and negative signal is straight to make the length of high speed signal line on the backplate shortest, furthest has reduced the signal attenuation of circuit board to high speed signal line, has improved signal quality. In the utility model, the connectors on the front and back sides are overlapped with less signal wiring, so as to reserve the largest area for the vent hole of the back plate, strengthen the air flow of the system and improve the heat dissipation of the system; the utility model discloses in, increase the vent area, can reduce the demand to system fan power to reduce the cost of system fan, further reduce system's cost. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (7)

1. A backing sheet, comprising:

a circuit board;

a first connector unit; the first connector unit comprises at least one group of first connector modules, and each group of the first connector modules comprises a front connector and a back connector; the pins in odd columns in the pin arrangement of the front connector and the pins in even columns in the pin arrangement of the back connector are arranged the same; the front connector is arranged on the front surface of the circuit board, the back connector is arranged on the back surface of the circuit board, and a row of pins staggered relative to the front connector are connected with the front connector.

2. The backing sheet of claim 1 wherein: the first row of the front connector is in idle connection, the second row to the Nth row are sequentially and correspondingly connected with the first row to the N-1 row of the back connector, and the Nth row of the back connector is in idle connection; or the first row of the back connector is in idle connection, the second row to the Nth row are correspondingly connected with the first row to the N-1 row of the front connector in sequence, and the Nth row of the front connector is in idle connection; n is a positive integer, and N is more than or equal to 2.

3. The backing sheet of claim 1 wherein: the first connector unit is disposed in any one of a left upper region, a middle upper region, a right upper region, a left lower region, a middle lower region, and a right lower region of the circuit board.

4. The backing sheet of claim 1 wherein: the back plate further comprises:

a second connector unit; the second connector unit comprises at least one set of second connector modules; every a set of the second connector module includes a front connector and a back connector, wherein, the front connector in the second connector module is located the front of circuit board, the back connector is located the back of circuit board and stagger whole the front connector.

5. The backing sheet of claim 4 wherein: the first connector unit is arranged on the middle upper part or the middle lower part of the circuit board; the front connectors of the second connection modules of the second connector units are arranged on the middle lower part or the middle upper part of the circuit board, and the back connectors are uniformly arranged on two sides of the back connectors in the first connector units.

6. The backing sheet of claim 1 wherein: the circuit board further comprises a plurality of vent holes.

7. An electronic terminal, characterized by: the electronic terminal comprises a back plane as claimed in any one of claims 1 to 6.

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