CN109121356B

CN109121356B - Fan control panel and fan subrack

Info

Publication number: CN109121356B
Application number: CN201710491865.6A
Authority: CN
Inventors: 赵青云; 苗裕
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2017-06-26
Filing date: 2017-06-26
Publication date: 2021-11-12
Anticipated expiration: 2037-06-26
Also published as: CN109121356A

Abstract

The invention discloses a fan control panel and a fan subrack, wherein the height of the installation space of the fan control panel is H, the fan control panel comprises two identical PCB boards, and each PCB board is used for driving a group of fans to operate; the first surface of the PCB is used for mounting a first height limiting device, and the limiting height is Ha; the second surface of the PCB is used for mounting a second height limiting device, and the limiting height is Hb; the thickness of the PCB is Hp; the first surfaces of the two PCBs are stacked up and down face to face and fixed through the fixing piece, and the height of the fixing piece between the first surfaces of the two PCBs is Hz. According to the invention, two identical PCB boards are adopted, and each PCB board drives one group of fans to operate; the protection of the fan drive control is realized under the conditions that the structure of the fan inserting box is not changed and the installation space of the fan control panel is not increased.

Description

Fan control panel and fan subrack

Technical Field

The invention relates to the technical field of communication equipment, in particular to a fan control panel and a fan plug-in box.

Background

With the higher and higher service rate and larger cross capacity of optical communication bearing, the power consumption of the whole subrack is also larger and larger, and the heat dissipation pressure is also larger and larger, so that the reliability of the fan plug box must meet higher requirements. However, due to the space limitation of the sub-rack and the Printed Circuit Board (PCB) area of the PCB controlling the operation of the fans to ensure the efficient air exchange efficiency of the fans, one PCB is shared by 6 or 8 fans in one fan box. Once a PCB fails, all fans stall may cause the temperature of the PCB to momentarily rise outside of the normal operating temperature range.

Disclosure of Invention

In view of the above, the present invention provides a fan control board and a fan insert box, so as to solve the problem of how to protect a PCB board in a fixed installation space.

The technical scheme adopted by the invention for solving the technical problems is as follows:

according to one aspect of the invention, a fan control board is provided, the height of the installation space of the fan control board is H, the fan control board comprises two identical PCBs, and each PCB is used for driving a group of fans to operate;

the first surface of the PCB is used for mounting a first height limiting device, and the limiting height is Ha; the second surface of the PCB is used for mounting a second height limiting device, and the limiting height is Hb; the thickness of the PCB is Hp;

the first surfaces of the two PCBs are stacked up and down face to face and are fixed through fixing pieces, and the height of the fixing pieces between the first surfaces of the two PCBs is Hz;

the Ha, Hb, Hp, Hz and H satisfy the following relations: ha + Hb < Hz, Hz +2 Hp +2 Hb < H.

Optionally, the first surface of the PCB is left-right symmetrically mounted with devices at a midpoint position;

the height of the device mounted at one side position of the midpoint of the first plane is h1, the height of the device at the symmetrical position is h2, and the h1 and the h2 satisfy the following relations: h1+ h2< Hz.

Optionally, the PCB boards stacked below are fixedly mounted, and the PCB boards stacked above are floatingly mounted.

Optionally, the fixing member includes a stud and a nut, and the PCB is provided with a stud hole corresponding to the stud;

the PCB stacked below is matched with the nut through the stud and is fixed and limited, and is limited left and right through a first locating pin;

the PCB stacked on the PCB is limited in front and back through a second positioning pin, and floats left and right and/or floats up and down through the matching of the stud and the stud hole.

Optionally, the stud comprises a stud body and a stud head;

the diameter of the stud head is smaller than that of the stud hole.

Optionally, the height of the stud head is greater than the thickness Hp of the PCB plate.

Optionally, the PCB further includes a power socket and a signal socket; the first positioning pin, the second positioning pin, the power socket and the signal socket are positioned on the same side of the fan control board.

Optionally, the PCB further includes a power socket and a signal socket; the power socket and the signal socket are positioned on the same side of the fan control board.

Optionally, the first surface of the PCB board is mounted with a positioning pin.

According to another aspect of the present invention, a fan insert box is provided, which comprises a box body, two sets of fans and the fan control board;

the two groups of fans are positioned in the box body; the fan control panel is connected with the two groups of fans and used for driving the two groups of fans to operate.

According to the fan control board and the fan inserting box, each PCB drives one group of fans to operate; the protection of the fan drive control is realized under the conditions that the structure of the fan inserting box is not changed and the installation space of the fan control panel is not increased.

Drawings

FIG. 1 is a schematic side view of a fan control board according to an embodiment of the present invention;

FIG. 2 is a schematic top view of a fan control board according to an embodiment of the present invention;

fig. 3 is a schematic bottom view of a fan control board according to an embodiment of the invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

First embodiment

Referring to fig. 1-3, a first embodiment of the present invention provides a fan control board, the height of the installation space of the fan control board is H (not shown in the drawings), the fan control board includes two identical PCB boards (11 and 12 in the drawings), and each PCB board is used for driving a set of fans to operate;

the first surface (111, 121 in the attached drawings) of the PCB is used for installing a first height limiting device, and the limiting height is Ha; the second side (shown as 110, 120 in the drawings) of the PCB board is used for installing a second height limiting device, and the limiting height is Hb; the thickness of the PCB is Hp;

the first surfaces (111 and 121 in the attached drawings) of the two PCBs are stacked up and down face to face and are fixed through a fixing piece 13, and the height of the fixing piece 13 between the first surfaces (111 and 121 in the attached drawings) of the two PCBs is Hz;

In the embodiment, the first surface of the PCB is provided with devices in bilateral symmetry at a midpoint position O;

Taking fig. 1 as an example, the A, B device in fig. 1 is installed on the first surface 111 of the PCB 11, the installation position (+ X position, where X is greater than or equal to 0 and less than or equal to 0.5L, and L is the length of the PCB) of the a device and the installation position (-X position) of the B device are bilaterally symmetrical at the midpoint position O, the height of the a device is h1, and the height of the B device is h 2; the A1 and B1 devices are installed on the first surface 121 of the PCB 12, the installation position of the A1 device and the installation position of the B1 device are bilaterally symmetrical by a midpoint position O, the height of the A1 device is h1, and the height of the B1 device is h 2; the sum of the heights of the a1 and B devices h1+ h2< Hz, and the sum of the heights of the a and B1 devices h1+ h2< Hz.

It is conceivable that the height of the device itself, if high, may be offset from other devices when mounted on a PCB. Still taking fig. 1 as an example, the height of the C device is higher, and when the C device is mounted on the first surface 111 of the PCB 11, other devices are not mounted at the symmetrical positions, that is, the C device is staggered from other devices, so that the sum of the heights of the devices is prevented from being larger than Hz, and the height of the mounting space of the fan control board is increased.

In this embodiment, the PCB boards 12 stacked on the lower side are fixedly mounted, and the PCB boards 11 stacked on the upper side are floatingly mounted.

In particular, the fixing member 13 may comprise a stud and a nut (not shown in the drawings), and the PCB is provided with a stud hole corresponding to the stud, for example, as shown at 115 on the PCB 11;

the PCB 12 stacked below is fixed and limited by the fit of the stud and the nut, and limited left and right by a first positioning pin 122;

the PCB 11 stacked thereon is limited forward and backward by the second positioning pin 112, and is floated left and right and/or up and down by the cooperation of the stud and the stud hole.

In this embodiment, the stud includes a stud body and a stud head; the diameter of the stud head is smaller than that of the stud hole; the height of the stud head is greater than the thickness Hp of the PCB.

Illustratively, the stud hole 115 on the PCB 11 has an oval shape, and the oval stud hole 115 has a size of 5.8mm by 5.3mm, i.e., a major axis is 5.8mm, a minor axis is 5.3mm, and a stud head has a diameter of 5.0mm, so that the stud head can float left and right without limitation. The thickness Hp of the PCB board 11 is 2.4mm, the height of the stud head is 2.6mm, therefore, the thickness of the stud head and the PCB board can realize the upper and lower floating of 0.2mm without limit.

Further, the PCB board further includes a power socket (shown in fig. 114, 124) and a signal socket (shown in fig. 113, 123); the first alignment pin 122, the second alignment pin 112, the power receptacle and the signal receptacle are located on the same side of the fan control board.

Furthermore, a positioning pin (not shown in the attached drawings) is installed on the first surface of the PCB board, and the positioning pin can ensure accurate positioning during PCB installation.

According to the fan control board provided by the embodiment of the invention, through two identical PCB boards, each PCB board drives one group of fans to operate; the protection of the fan drive control is realized under the conditions that the structure of the fan inserting box is not changed and the installation space of the fan control panel is not increased.

Second embodiment

A second embodiment of the present invention provides a fan box, which includes a box body, two sets of fans, and a fan control board;

the fan control board can refer to the description of the first embodiment, and is not described herein.

It should be noted that the number of the fans may be 6 or 8, and the specific number is not limited herein.

According to the fan inserting box disclosed by the embodiment of the invention, each PCB drives one group of fans to operate through two identical PCBs; the protection of the fan drive control is realized under the conditions that the structure of the fan inserting box is not changed and the installation space of the fan control panel is not increased.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" or "a plurality" means two or more unless otherwise specified.

The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, and are not to be construed as limiting the scope of the invention. Those skilled in the art can implement the invention in various modifications, such as features from one embodiment can be used in another embodiment to yield yet a further embodiment, without departing from the scope and spirit of the invention. Any modification, equivalent replacement and improvement made within the technical idea of using the present invention should be within the scope of the right of the present invention.

Claims

1. A fan control panel is characterized in that the height of an installation space of the fan control panel is H, the fan control panel comprises two identical PCBs, and each PCB is used for driving a group of fans to operate;

the Ha, Hb, Hp, Hz and H satisfy the following relations: ha + Hb < Hz, Hz +2 Hp +2 Hb < H;

the first surface of the PCB is provided with devices in bilateral symmetry at the midpoint position;

2. The fan control board of claim 1, wherein the PCB boards stacked on the lower side are fixedly installed, and the PCB boards stacked on the upper side are floatingly installed.

3. The fan control board according to claim 2, wherein the fixing member comprises a stud and a nut, and the PCB board is provided with a stud hole corresponding to the stud;

4. The fan control panel of claim 3, wherein the stud comprises a stud body and a stud head;

the diameter of the stud head is smaller than that of the stud hole.

5. The fan control board of claim 4, wherein the stud head has a height greater than a thickness Hp of the PCB plate.

6. The fan control board of claim 3, wherein the PCB board further comprises power and signal sockets; the first positioning pin, the second positioning pin, the power socket and the signal socket are positioned on the same side of the fan control board.

7. The fan control board of any one of claims 1-2, wherein the PCB board further comprises a power socket and a signal socket; the power socket and the signal socket are positioned on the same side of the fan control board.

8. The fan control board according to any one of claims 1 to 5, wherein the first surface of the PCB board is mounted with positioning pins.

9. A fan insert box, characterized in that the fan insert box comprises a box body, two groups of fans and a fan control board according to any one of claims 1-8;