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Double-backboard structure and ATR case thereof

A double-backplane and chassis technology, applied in the direction of support structure installation, electrical equipment construction parts, electrical components, etc., can solve the problems of difficult disassembly and maintenance, high cost, high failure rate of flexible fixation, etc., to ensure signal integrity and simplify Production process, the effect of ensuring stability

Pending Publication Date: 2020-09-25
国科北方电子科技(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Single backplane technology is only suitable for occasions with loose size restrictions and no signal integrity requirements. Single backplane technology cannot solve the contradiction between small backplane size and multiple aviation electrical connectors;
[0005] 2. The flexible board interconnection double backplane technology has problems such as complicated flexible board welding process, high cost, difficult disassembly and maintenance, and high flexible fixed failure rate.

Method used

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  • Double-backboard structure and ATR case thereof
  • Double-backboard structure and ATR case thereof
  • Double-backboard structure and ATR case thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A double backplane structure, including A backplane 1 and B backplane 2,

[0038] A sub-board connector 102 is embedded on the A backplane 1, and a positioning pin seat 101 is fixedly installed on one side of the A backplane 1;

[0039] A motherboard card connector 202 is embedded on the B backplane 2, and a positioning pin 201 is fixedly installed on one side of the B backplane 2, and the positioning pin 201 is plugged into the positioning pin seat 101. Inside, the B backplane 2 is connected to the A backplane 1 through the alignment pin 201 and the alignment pin seat 101, and the B backplane 2 is parallel to the A backplane 1, the motherboard card connector 202 is plugged and connected to the daughter card connector 102, and the motherboard card connector 202 is electrically connected to the daughter card connector 102.

[0040] Wherein, the B backplane 2 is also installed with a fixed spacer 204 through screws 205, and the inner interference fit of the fixed spacer ...

example 1

[0057] Such as image 3 and 4 as shown, image 3 For the A backplane, place 5 pieces of electrical connectors (the number of electrical connectors changes with the number of sub-boards, and the limit size of the chassis changes accordingly) and positioning pins, etc., to realize the plug-in connection function with the sub-boards inside the chassis. Use the backplane fixing structure to tightly connect the A backplane and the overall structure of the chassis through screws, and all the fixed adapters and the A backplane can be disassembled and replaced. Figure 4 For the B backplane, place 5 pieces of aviation electrical connectors (the number of aviation electrical connectors is determined according to the use requirements), and the electrical connectors are directly welded to the backplane to realize power supply and signal transmission functions. The size of the A backplane and the B backplane is the same, the height of the backplane is the same as the height of the sub-b...

example 2

[0059] Such as Figure 5-8 As shown, the aviation electrical connector is welded as a whole with the B backplane through a special fixing pad, and then fixed to the back structure of the chassis by screws. Figure 8 It is designed for a special fixed pad, and the size of the marked place needs to be designed with a negative tolerance (0-0.3), which is convenient for the interference fit and fixation of the aviation electrical connector and the special fixed pad. By adopting this design scheme, both in-line welding of aviation electrical connectors and detachable structural installation can be taken into account, and the operation is simple and the cost is low.

[0060] During the production and assembly process, the assembly is completed according to the following process to ensure the welding accuracy of the aviation electrical connector:

[0061] In the first step, the aeronautical electrical connector and the special fixed pad are interference-fit assembled;

[0062] The ...

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Abstract

The invention discloses a double-backboard structure, which comprises a backboard A and a backboard B, wherein a daughter board connector is embedded in the backboard A, a positioning pin seat is further fixedly installed on one side face of the backboard A, a mother board connector is embedded in the backboard B, a positioning pin is fixedly mounted on one side surface of the backboard B, the positioning pin is inserted into the positioning pin seat, the backboard B is connected with the backboard A through matching of the positioning pin and the positioning pin seat, the backboard B is parallel to the backboard A, the mother board connector is connected with the daughter board connector in an inserted mode, the mother board connector is electrically connected with the daughter board connector, the mother board connector and the daughter board connector can be detached independently or along with a back panel, the structure is firm, and maintenance is convenient. The invention furtherdiscloses an ATR case, which comprises a case bottom plate, a case panel, a case back plate, a case right plate, a case left plate, a case top plate, a case internal board, a backboard A and a backboard B, wherein rigid connection can guarantee stability of signals and a system.

Description

technical field [0001] The invention relates to the field of chassis technology, more specifically, it relates to a double-backplane structure and an ATR chassis. Background technique [0002] With the continuous improvement of chassis modularization and generalization, ATR chassis has more and more applications in various fields. ATR case refers to the standard case of civil aircraft avionics case housing, rack, cooling air and connectors that meet the requirements of the specification "Transport Aircraft Equipment Case and Mounting Rack". Due to its anti-vibration, reinforcement, cooling and many other characteristics, the ATR chassis has greater applicability in small load platforms and complex application environments, so it puts forward higher requirements for the size, convenience, simplification, and stability of the chassis. The design of the chassis backplane occupies a large proportion in the above aspects. [0003] At present, most ATR chassis adopt single backp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K7/14
CPCH05K7/1444H05K7/1452
Inventor 张少枫王树超李勇利徐康生
Owner 国科北方电子科技(北京)有限公司
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