CN108235640B

CN108235640B - Case with cable-free connection structure and implementation method thereof

Info

Publication number: CN108235640B
Application number: CN201711426617.XA
Authority: CN
Inventors: 翟仁文; 祝君冬; 赵群
Original assignee: Beijing Jiaoda Signal Technology Co Ltd
Current assignee: Beijing Jiaoda Signal Technology Co Ltd
Priority date: 2017-12-25
Filing date: 2017-12-25
Publication date: 2020-06-09
Anticipated expiration: 2037-12-25
Also published as: CN108235640A

Abstract

The structure of the case cable-free connection scheme comprises a case component (13), a bottom plate (10), a plurality of rear plugboards (3), an aviation plugboard component (2), a rear plugboard component (1) and a fixing device (4), wherein the aviation plugboard component (2) comprises an aviation plug printed board (9), a plurality of aviation plugs (5) and a fixing block (6); the aviation plugboard assembly (2) is connected with the rear plugboard (3) through a connector A; the rear flashboard (3) is connected with the bottom board (10) through a connector B; the fixing device (4) enables the rear insertion boards (3) to be smoothly inserted into the guide rails (12), and each rear insertion board (3) is inserted into the case assembly (13) through the guide rails (12). The invention eliminates the wiring in the case, improves the reliability of the case, reduces the assembly time and improves the heat radiation performance of the case.

Description

Case with cable-free connection structure and implementation method thereof

Technical Field

The invention relates to the field of railway signal equipment interface connection, in particular to a wireless binding connection scheme for a case.

Technical Field

In the railway signal industry, a chassis of equipment generally adopts an aerial plug as an external interface to ensure the reliability and stability of signal transmission. Inside the chassis, the connector is typically connected to the chassis base by wire bonding or crimping. This connection method causes a drastic increase in the number of cables as the integration of the device is improved, thereby causing a reduction in the resistance of the cabinet to shock and vibration. Too many cables can block the heat dissipation holes, thereby seriously reducing the heat dissipation performance of the case, increasing the assembly time and reducing the maintainability of the case.

Disclosure of Invention

In view of the drawbacks of the prior art, it is an object of the present invention to provide an integrated solution for a cableless connection of a chassis.

The structure of the case cable-free connection scheme provided by the invention comprises a case component 13, a bottom plate 10, a plurality of rear plugboards 3, an aviation plugboard component 2, a rear plugboard component 1 and a fixing device 4, and is characterized in that the aviation plugboard component 2 comprises an aviation plugboard printed board 9, a plurality of aviation plugboards 5 and a fixing block 6; the back panel assembly 1 is connected with the aviation plug board assembly 2 through a fixing screw 7; the aviation plugboard assembly 2 is connected with the rear plugboard 3 through a connector A; the rear flashboard 3 is connected with the bottom board 10 through a connector B; the fixing means 4 allows the rear insert boards 3 to be smoothly inserted into the guide rails 12, and each rear insert board 3 is inserted into the cabinet assembly 13 through the guide rails 12.

The case cableless connection scheme eliminates the wiring in the case, improves the reliability and maintainability of the case and reduces the assembly time. Because the case is connected with the case bottom plate in a rear inserting plate mode, the heat dissipation holes cannot be blocked, and the heat dissipation performance of the case is improved.

Drawings

FIG. 1 is a schematic diagram of a case cableless connection scheme;

FIG. 2 is a schematic view of an aviation plug assembly;

FIG. 3 is an expanded view of a case cableless connection scheme;

FIG. 4 is an exploded view of the case;

FIG. 5 is a schematic view of an aerial plug configuration;

[ description of main element symbols ]

1 a rear panel assembly; 2, aviation plug board assembly; 3, rear inserting plate; 4, fixing the device; 5, aerial plug-in; 6, fixing blocks; 7 fixing the screw; 8, a handle; 9, aviation plug printed board; 10 a bottom plate; 11 heat dissipation holes; 12 a guide rail; 13 a chassis component; 14 set screw

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Fig. 1 is a schematic structural diagram of a wireless connection scheme of a chassis of the invention, which includes a back panel assembly 1, an aviation plug assembly 2, a back plug board 3, a fixing device 4, an aviation plug 5, a fixing block 6, a handle 8, a fixing screw and the like. In the traditional case, an aerial plug 5 is fixed on a back panel assembly 1 and then connected to a bottom plate 10 through a cable, and in order to realize the case cable-free design (wireless binding design), the aerial plug assembly 2 is designed to be used as an intermediate bridge for connecting the back panel assembly 1 to the bottom plate 10. Referring to fig. 3 and 4, the specific implementation process of the scheme of the invention is as follows: firstly, fixing the aviation plug board component 2 on the rear panel component 1 and fastening the aviation plug board component through a fixing screw 7; then each rear plugboard 3 is inserted into a male connector A on the aviation plug printed board 9 through a female connector A; finally, each rear plug board 3 is inserted into the case assembly 13 through the guide rail 12 to form an integral case cable-free design scheme. This scheme simple structure has avoided loaded down with trivial details links such as distribution, has saved the time of quick-witted case assembly, and the quick-witted case does not have cable about simultaneously and blocks louvre 11, and the convection current is unobstructed between the louvre 11 about the quick-witted case, has improved the heat-sinking capability of quick-witted case greatly, has strengthened the security performance of equipment.

There are several technical difficulties in implementing a wireless binder connection scheme for a chassis.

Firstly, referring to fig. 2, in order to weld each of the aviation plugs 5 on the aviation plug printed board 9, the aviation plugs 5 are fixed on the aviation plug printed board 9 by fixing screws 7 to be welded uniformly, and then the aviation plugs 5 are assembled on the rear panel assembly 1 after welding. However, the thicknesses of the aerial plug flanges (see fig. 5) of different types of aerial plugs 5 are generally inconsistent, so that the aerial plugs 5 cannot be correctly installed on the same horizontal plane when being installed on the back panel assembly 1; or even if the installation is reluctant, the aviation plug printed board 9 is deformed, so that the welding point of the aviation plug 5 has stress, and the safety performance of the aviation plug 5 is sharply reduced. For this purpose, a fixing block 6 is provided, and the aviation plug 5 is mounted on the fixing block 6 during welding, then assembled on the aviation plug printed board 9 and fastened through a fixing screw 7. The aerial plug 5 with different thicknesses of the aerial plug flange can ensure that all the aerial plugs 5 are positioned on the same horizontal plane after welding is finished by adjusting the thickness of the fixing block 6, so that the installation can be smoothly carried out, the stress of welding spots is eliminated, and the safety of equipment is improved; and the fixed block 6 is made of metal materials, so that the electromagnetic compatibility of the case is ensured.

Referring to fig. 4, the rear board 3 is connected to the male connector of the connector B on the backplane 10 via the female connector of the connector B. If the number of the rear insertion boards 3 is large, in the process that each rear insertion board 3 is inserted into the chassis assembly 13 at the same time, due to the large position error existing among the rear insertion boards 3, each rear insertion board 3 cannot be accurately inserted into the guide rail 12, and the phenomenon that the rear insertion boards 3 are not easily inserted into the guide rails 12 occurs; in addition, when the chassis is maintained, the aviation plug board 2 assembly or the rear plug board 3 is often pulled out for maintenance and detection. Because the two ends of the rear plug board 3 are respectively inserted into the male connector A of the aviation plug printed board 9 and the male connector B of the bottom board 10 through the female connector A and the female connector B of the connector A, when the rear panel assembly 1 is pulled out through the handle 8, the rear plug board 3 is disconnected at the connector A or the connector B, and the phenomenon of disordered plugging is easily caused. In order to solve the above two problems, a fixing device 4 is designed, and in the implementation process of the embodiment, the fixing device 4 is simultaneously fixed on the aviation plug printed board 9 and the rear inserting board 3 and is fastened through a fixing screw 14. The fixing device 4 reduces the position error among the rear insertion boards 3 on one hand, so that the rear insertion boards 3 are smoothly inserted into the guide rails 12, and the case is smoothly assembled; on the other hand, when the rear panel assembly 1 is pulled out, all the rear flashboards are disconnected at the connector B, and the phenomenon of disordered pulling and inserting is avoided. If the rear insertion plate 3 is required to be disconnected at the connector A, the fixing device 4 is only required to be simultaneously installed on the bottom plate 10 and the rear insertion plate 3, but a pulling-assistant device is required to be additionally installed at the female end of the connector A of the rear insertion plate 3, so that the rear insertion plate 3 can be conveniently pulled out, inserted and maintained. It should be noted that the male and female ends of the connector A, B can be flexibly disposed at both ends of the rear plug board 3 as required, and such a design is common in the art.

The invention well solves the defects of the cable connection mode of the equipment case in the railway signal industry, and brings the following technical effects:

firstly, the aviation plug board component 2 is fixed on the rear panel component 1, and then the rear plug board 3 is connected with the bottom board 10, so that the integral cable-free design of the case is realized, the reliability and maintainability of the equipment are improved, the heat dissipation capacity of the case is improved, and the integral performance of the equipment is improved.

And secondly, the fixing block 6 is designed, so that the positioning problem when the aviation plug board assembly 2 and the rear panel 10 are installed is solved, the connectors with different sizes and different models can be compatible to be installed at the same time, and the scheme compatibility of the cable-free design is realized.

Thirdly, a fixing device 4 is designed, the problem of positioning when a plurality of rear plugboards 3 are simultaneously plugged is solved, and the phenomenon of disordered plugging and unplugging of the rear plugboards during equipment maintenance is avoided.

Compared with the traditional case cable connection mode, the aviation plug printed board 9 and the rear plug board 3 are added, on one hand, partial functions to be realized by the equipment can be transferred to the rear plug board 3, for example, a signal acquisition circuit can be placed to increase the number of acquisition paths of equipment signals; on the other hand, the traditional aviation plug 5 port protection function is connected to the bottom plate 10 through the aviation plug 5 through a cable, and the port protection function can be placed on the rear plugboard 3, so that the protection circuit is close to the aviation plug 5 port, and the anti-interference performance of the equipment in a complex electromagnetic environment is improved; and the expansibility of the functions of the case is increased, and particularly when the size of the case is limited and more functions are needed to be realized, the case cable-free connection scheme has more profound edification meaning.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A chassis with a cable-free connection structure is used for interface connection of railway signal equipment, and comprises a chassis component (13), a bottom plate (10), a plurality of rear plugboards (3), an aviation plugboard component (2), a rear panel component (1) and a fixing device (4), and is characterized in that the aviation plugboard component (2) comprises an aviation plugboard (9), a plurality of aviation plugboards (5) and a fixing block (6); the back panel assembly (1) is connected with the aviation plug board assembly (2) through a fixing screw (7); the aviation plugboard assembly (2) is connected with the rear plugboard (3) through a connector A; the rear flashboard (3) is connected with the bottom board (10) through a connector B; the fixing device (4) enables the rear plugboards (3) to be smoothly inserted into the guide rails (12), each rear plugboard (3) is inserted into the case assembly (13) through the guide rails (12), and partial functions to be realized by the equipment are transferred to the rear plugboards (3).

2. A cabinet according to claim 1, wherein the fixing device (4) is connected to the backplane board (3) and the aviation printed board (9) by fixing screws (14).

3. A cabinet according to claim 1, wherein the fixing means (4) is mounted on the base plate (10) and the backplane (3), and wherein a pull-out aid is provided at the female end of the connector a of the backplane (3).

4. A cabinet according to claim 1, wherein the soldering is performed by mounting the aviation plug (5) on the mounting block (6) and then mounting the aviation plug on the aviation printed board (9), and the mounting block (6) is made of a metal material.

5. A cabinet according to claim 4, characterized in that the aerial plugs (5) with different aerial plug flange thicknesses are positioned on the same horizontal plane after all the aerial plugs (5) are welded by adjusting the thickness of the fixing block (6).

6. A cabinet according to claim 2, wherein part of the functions to be performed by the equipment can be transferred to the backplane board (3).

7. The chassis of claim 6, wherein signal acquisition circuitry or port protection functions may be incorporated.

8. A cabinet according to claim 2, wherein the disconnection of the backplane at connector B is achieved when the back panel assembly (1) is pulled out by means of the handle (8).

9. A cabinet according to claim 1, characterized in that the aviation plug board assembly (2) is fixed on the rear panel assembly (1) and then connected with the bottom board (10) through the rear plug board (3) to realize the cable-free design of the whole cabinet.

10. A method of implementing the untethered connection structure of the chassis of claim 2, the method comprising the steps of: during welding, the aviation plugs (5) are installed on the fixing blocks (6) firstly, then are assembled on the aviation plug printed board (9) and are fastened through the fixing screws (7), and the aviation plugs (5) with different aviation plug flange thicknesses enable all the aviation plugs (5) to be positioned on the same horizontal plane after welding is completed by adjusting the thicknesses of the fixing blocks (6), so that stress of welding points is eliminated;

the fixing device (4) is simultaneously fixed on the aviation plug printed board (9) and the rear inserting board (3) and is fastened through the fixing screws (14), the fixing device reduces the position error between the rear inserting boards (3) and enables the rear inserting boards to be smoothly inserted into the guide rail (12), and therefore the case is smoothly assembled;

the aviation plugboard component (2) is fixed on the rear panel component (1) and then is connected with the bottom plate (10) through the rear plugboard (3), so that the integral cable-free design of the case is realized, and the heat dissipation capacity of the case is improved.