Bread module type aviation equipment structure

Abstract

The utility model provides a bread module type aviation equipment structure, which comprises a front panel module, a plurality of middle function modules and a tail module, the front panel module is used for providing a communication equipment power supply interface, and the middle function modules comprise a plurality of middle modules and are used for providing a communication service function; the front panel module, the plurality of middle function modules and the tail module are connected in series through screw rods, and a flexible printed board and a signal connection cable are arranged at the bottom and are covered by a cover plate. The electrical function performance requirement required by the whole machine is met, meanwhile, the electromagnetic compatibility design condition of aviation communication electronic equipment is met, modular design and processing are achieved, and convenience is brought to production, manufacturing, installation, debugging and maintenance.

Description

Technical Field

[0001] The utility model relates to avionics equipment, and particularly to a bread module type aviation equipment structure. Background Technique

[0002] The modules, components and parts used in the design and manufacture of traditional aviation communication electronic equipment are all special-purpose, with complex structures, high prices and long R & D cycles. With the development of communication technology, the "three-in-one" design of modularization, generalization and combination has become the solution and development direction of communication equipment design, and has increasingly brought great benefits. At present, due to the limitation of the aircraft platform structure of aviation equipment, the degree of generalization of its structural form is quite low, resulting in a large number and complexity of equipment structures, which brings difficulties to processing, installation and maintenance. Summary of the Invention

[0003] The purpose of the utility model is to provide a bread module type aviation equipment structure, which meets the electrical functional performance requirements of the whole machine, and at the same time meets the electromagnetic compatibility design conditions of aviation communication electronic equipment, realizes modular design and processing, and brings convenience to production, manufacturing, installation, debugging and maintenance.

[0004] The technical solution to achieve the purpose of the present invention is: a bread module type aviation equipment structure, including a front panel module, several intermediate function modules and a tail module. The front panel module is used to provide a power supply interface for the communication equipment. The intermediate function modules include several intermediate modules, which are used to provide communication service functions. The front panel module, several intermediate function modules and the tail module are connected in series by screws. A flexible printed circuit board and a signal connection cable are arranged at the bottom, and the bottom is covered by a cover plate. After opening the bottom cover plate, the connections between all modules can be seen, which is convenient for inspection, detection and debugging.

[0005] The front panel module of the power supply interface of the communication equipment is generally arranged at the front end, and the external power supply signal interface, ground connection and identification are all arranged on the outer side of the front panel module.

[0006] The intermediate modules with communication service functions are all provided with PCB mounting posts, through holes for aviation rectangular connectors are opened at the bottom, and openings for RF connectors are provided, which is convenient for electrical cross-linking after being closed.

[0007] Furthermore, the front panel module, the intermediate module and the tail module include module box shells with the same shape and size. The width dimension meets the 5 / 8 ATR chassis standard, and screw mounting through holes are provided at the four corners of the module box shell.

[0008] Furthermore, two rounded corners are provided at the upper two corners of the module box shell, two legs extend from both sides of the bottom end, and a stepped structure is provided on the inner side of the legs.

[0009] Furthermore, a cavity is provided inside the module box housing of the intermediate module. Studs are provided at the four corners of the cavity. The mounting printed circuit board is mounted inside the cavity through the studs. Through holes for low-frequency signal connectors and through holes for RF signal connectors are provided on the bottom surface of the module box housing.

[0010] Furthermore, closed raised strips are provided around the module box housing of the intermediate module, and mounting grooves for mounting conductive rubber strips for electromagnetic shielding are provided. When the module box housings are connected in series, the closed raised strips are embedded into the grooves of another module box housing, and at the connection, it is sealed through the conductive rubber strips for electromagnetic shielding.

[0011] Furthermore, heat dissipation ribs are provided on both sides and the top of the module box housing of the intermediate module.

[0012] Furthermore, a heat dissipation air duct and a heat dissipation fan are provided in the module box housing of the tail module.

[0013] Furthermore, the signal connection cable includes an RF cable and a power cable. After all the modules of the whole device are assembled, low-frequency signals and power are electrically cross-linked through a flexible printed circuit board, and RF signals are cross-linked through the RF cable.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1) This embodiment makes full use of the advantages of modular design for reasonable module connection in series. The width standard conforms to the ATR chassis standard of GBJ441. The whole machine has good adaptability, testability, maintainability and functional expandability, which is conducive to rapid integration and cost reduction;

[0016] 2) The embodiment of the present utility model adopts a bread module type aviation equipment structure. Compared with the previous generation of similar communication equipment (non-bread module type structure), the volume is reduced a lot, and the weight is less than 60% of the original equipment. The equipment has passed various relevant type tests of aviation airborne communication equipment such as environmental qualification tests, reliability tests, and electromagnetic compatibility tests;

[0017] 3) Concave and convex grooves are added to the bread type modules of the communication equipment in the structural design, which strengthens the electromagnetic shielding function, increases the connection strength between the bread type modules, and increases the airtightness of the communication equipment. Description of the Drawings

[0018] The following further describes the present utility model in conjunction with the drawings.

[0019] Figure 1 It is a schematic diagram of the decomposition of the whole bread type module machine.

[0020] Figure 2 It is a schematic diagram of the features of the module box, Figure 2Among them, (a) is a schematic diagram of one side of the module box, and (b) is a schematic diagram of the other side.

[0021] Figure 3 It is a typical structural dimension diagram of the module box.

[0022] Figure 4 It is a typical circuit printed board dimension diagram.

[0023] Figure 5 It is a schematic diagram of the module box installation.

[0024] Figure 6 It is a schematic diagram of the front panel module installation.

[0025] Figure 7 It is a schematic diagram of the tail module installation.

[0026] Figure 8 It is a schematic diagram of the wiring.

[0027] Figure 9 It is a schematic diagram of the shielding between modules.

[0028] Figure 10 It is a schematic diagram of the communication device in Embodiment 1. Figure 10 Among them, (a) is a forward schematic diagram, and (b) is a bottom side schematic diagram.

[0029] Figure 11 It is an exploded view of the communication device in Embodiment 1. Specific implementation manner

[0030] Combined with Figure 1 , a bread module type aviation communication device structure includes a front panel module 1, a tail module 2, several intermediate modules 3 connected in series like French bread slices, a long screw 4 for connecting the bread modules in series, and a cover plate 5 for the whole bread module type aviation equipment. The bread module type communication device has the characteristics of simple structure, convenient installation, maintenance and debugging, and high standardization, generalization and modularization.

[0031] Combined with Figures 2 to 9 For further illustration, Figure 2 It is a schematic diagram of the intermediate module. Its structural features include a module box housing 16. Inside the module box housing 16, there is a cavity 6 for installing a printed circuit board PCB. There are 4 groups of mounting studs 7 for the printed circuit board at the 4 corners of the cavity 6. There are 4 groups of through holes 8 for the long screw 4 at the 4 corners of the module box housing 16. On the bottom side of the module box housing 16, there are through holes 9 for low-frequency signal connectors and through holes 10 for RF signal connectors. Around the module box housing 16, there are closed raised strips 11 for electromagnetic shielding and positioning functions, and there is an installation groove 12 for installing a conductive rubber strip for electromagnetic shielding. The specific dimensions of a typical intermediate module box can be seen in Figure 3As shown, the width dimension meets the 5 / 8 ATR chassis standard, and heat dissipation ribs are provided on both sides and the top, which can improve the heat dissipation capacity of the module box.

[0032] The specific dimensions of the typical circuit printed board are as Figure 4 shown, and the printed board outline dimensions of all modules can be laid out according to this unified dimension.

[0033] Figure 5 Figure 9 is a schematic diagram of the installation of a typical module box. The printed circuit board PCB13 is fastened to the mounting studs 7 at the bottom of the module box housing 16 by 4 screws 14, and a conductive shielding rubber strip 15 is installed in the groove on the other side. Figure 6 Figure 11 is a schematic diagram of the installation of a typical front panel module, which includes a mounting printed circuit board PCB18, a front panel module housing 19, a conductive shielding rubber strip 20 installed in the groove of the module box, a front panel cover 17, a long screw 21 connecting the front panel module and the middle bread module in series, a front panel external electrical connector 22, a hanging foot 23 for fixing the communication equipment to the aircraft equipment compartment, and a grounding post 24 of the aviation equipment.

[0034] Figure 7 Figure 15 is a schematic diagram of the installation of a typical rear module box, which includes a rear module box housing 25, a printed circuit board PCB 26 and screws 27. The printed circuit board PCB 26 is fastened to the mounting posts of the module box housing by 4 screws 27. Since the rear module box is located on the outermost side of the aviation equipment, it is advisable to set the modules with relatively large heat generation in this position. Figure 7 The rear module box housing in Figure 15 is provided with a heat dissipation air duct and a heat dissipation fan.

[0035] Figure 8 Figure 21 is a schematic diagram of the connection after the complete combination of the aviation equipment. Each module box completes the connection of low-frequency signals through a flexible printed board 28 and the connection of radio frequency signals through a radio frequency cable 29. This is easy to separate the high- and low-frequency signal cables and power cables, meets the wiring principle of keeping incompatible components and signal lines (digital and analog, high-speed and low-speed, large current and small current, high voltage and low voltage) away from each other, and makes the electromagnetic compatibility design of the whole communication equipment more reasonable.

[0036] Figure 9 Figure 25 is a shielding schematic between the front, rear and each intermediate module. After closing, the characteristics of the labyrinth structure 31 can enhance the shielding of the space radiation electromagnetic wave signal, and the setting of the conductive rubber sealing ring 32 also increases the conductive continuity between the modules, making it easier to achieve the airtight shielding effect.

[0037] Two corners at the upper end of the module box housing are provided with rounded corners, and two legs extend from both sides at the bottom end, and a stepped structure is provided on the inner side of the legs.

[0038] The utility model is a novel bread-type modular structure designed in view of the discrete structural design features of functional modules of existing similar products. It adopts a flaky module form similar to French bread, stacks modules with different functions together, and connects them in series through long connecting screws to meet the electrical functional performance requirements of the whole machine. At the same time, it meets the electromagnetic compatibility design conditions of aviation communication electronic equipment, realizes modular design and processing, and brings convenience to production, manufacturing, installation, debugging and maintenance.

[0039] Embodiment 1

[0040] The utility model has been applied in a certain short-wave communication device. Figure 10 、 Figure 11 It shows a structure of an airborne short-wave communication terminal device. This embodiment actually consists of 5 modules, including 3 intermediate bread-type service modules, 1 front panel module and 1 tail module, which are connected in series by 4 long screws at the front and back to form the whole machine. The width of the whole machine meets the 5 / 8 ATR aviation airborne equipment chassis standard. The external power supply and signal interfaces of the front panel module, the hanging feet fixed by quick locks, the grounding posts for lap joint, the nameplate identification, etc. are all arranged on the outer side of the front panel module; each of the 3 intermediate service modules is provided with PCB mounting posts, through holes for aviation rectangular connectors are opened at the bottom, and openings for RF connectors are provided. The thickness of the module varies according to the functional setting requirements; the tail module box is located at the rearmost end of the communication device, and the power amplification module with the largest heat generation in the device is arranged at this position, and a heat dissipation air duct and a heat dissipation fan are provided; after the whole machine is closed, low-frequency signals and power are electrically cross-linked through flexible printed boards, RF signals are cross-linked through RF cables, and power is connected through separate cables; the bread module type communication device is provided with a bottom cover. Figure 10 After opening the bottom cover plate in Figure 10 , various signal connection lines such as the flexible printed board 28, RF cable 29 and power cable 30 between all modules can be seen, which is convenient for inspection, detection and debugging; the bread-type modules of the communication device are provided with concave and convex grooves and shielding conductive rubber strips in each module, which strengthens the electromagnetic shielding function, increases the connection strength between the bread-type modules, and increases the tightness of the communication device.

[0041] The utility model aims at aviation airborne communication electronic equipment, utilizes the concepts of standardization, modularization and combination, designs a reasonable structure according to the form of "French bread", based on the module and the whole machine of the equipment, and the width standard follows the ATR chassis standard of GBJ441. The maintainability, installability and function expandability of the equipment are good. The application of the utility model can make the original complex special modules and structures become simple, unify the module structure form and the circuit printed board form, and all design elements meet the installation requirements of aircraft avionics communication equipment, providing a general design idea for solving the module structure form, shortening the R & D cycle and greatly reducing the development production cost.

[0042] In addition to the above embodiments, the present utility model may also have other embodiments. All technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present utility model.

Claims

1. A modular aviation equipment structure for bread, characterized in that It includes a front panel module, several intermediate function modules and a tail module. The front panel module is used to provide a power supply interface for the communication device. The intermediate function modules include several intermediate modules and are used to provide communication service functions. The front panel module, several intermediate function modules and the tail module are stacked and connected in series by screws. A flexible printed circuit board and a signal connection cable are provided at the bottom, and the bottom is covered by a cover plate.

2. The modular aviation equipment structure of a bread according to claim 1, characterized in that, The front panel module, the intermediate module and the tail module include module box housings with the same shape and size. The width dimension meets the 5 / 8 ATR chassis standard. There are screw installation through holes at the four corners of the module box housing.

3. The modular aviation equipment structure of a bread according to claim 2, characterized in that There are rounded corners at the two upper corners of the module box housing. Two legs extend from both sides of the bottom end, and a stepped structure is provided inside the legs.

4. A modular aircraft equipment structure for bread according to claim 3, characterized in that, There is a cavity inside the module box housing of the intermediate module. There are studs at the four corners of the cavity. The mounting printed circuit board is mounted in the cavity through the studs. There are through holes for low-frequency signal connectors and through holes for RF signal connectors on the bottom surface of the module box housing.

5. A modular bread aviation equipment structure according to claim 4, characterized in that, There are closed raised strips around the module box housing of the intermediate module, and there are installation grooves for installing conductive rubber strips for electromagnetic shielding. When the module box housings are connected in series, the closed raised strips are embedded in the grooves of another module box housing, and at the connection, it is sealed by the conductive rubber strips for electromagnetic shielding.

6. The modular bread-shaped aircraft equipment structure according to claim 5, characterized in that, There are heat dissipation ribs on both sides and the top of the module box housing of the intermediate module.

7. The modular aviation equipment structure of a bread according to claim 3, characterized in that, The module box housing of the tail module is provided with a heat dissipation air duct and a heat dissipation fan.

8. A modular aviation equipment structure for bread, characterized in that, The signal connection cable includes a RF cable and a power cable.

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