CN114597698A

CN114597698A - LRM module capable of being quickly assembled and disassembled and preventing rain and electromagnetic shielding

Info

Publication number: CN114597698A
Application number: CN202210189289.0A
Authority: CN
Inventors: 张熠; 杨健; 张洋; 郝丙仁
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-06-07
Anticipated expiration: 2042-02-28
Also published as: CN114597698B

Abstract

A rapid-detachable rain-proof and electromagnetic shielding LRM module comprises a functional board card, a connector plug connected with the functional board card and a cold plate box body used for accommodating the functional board card, wherein the rear end of the cold plate box body is provided with a connector mounting groove, and the cold plate box body is covered with a cover plate for packaging the functional board card; composite waterproof conductive adhesive strips are filled between the connector plug and the cold plate box body and the cover plate as well as between the functional board card and the cold plate box body and the cover plate; the cold plate box body is arranged on a guide rail of the case in a sliding manner, and the front end of the cold plate box body is detachably arranged at the opening of the case and is provided with a pulling aid. The module is matched with the upper and lower guide rails of the case, the module is assisted by the pull-out aid when inserted, the pull-out aid can be clamped and fixed on the module after the module is inserted in place, and the pull-out aid can also play a good auxiliary role when detached; the module is fixed through the release screw on the module, and the module can be quickly detached from the case; the waterproof structural design can meet the requirements of electromagnetic shielding and rain prevention.

Description

LRM module capable of being quickly assembled and disassembled and preventing rain and electromagnetic shielding

Technical Field

The invention belongs to the technical field of electronic equipment, and particularly relates to an LRM module which can be quickly assembled and disassembled and can prevent rain and electromagnetic shielding.

Background

With the development of electronic interconnection devices, open-type and semi-open-type chassis are gradually applied to various fields. However, for the open type and semi-open type chassis, if the functions of rain prevention and electromagnetic shielding are required to be satisfied, the matched functional module of the chassis needs to separately satisfy the requirements of rain prevention and electromagnetic shielding.

At present, functional modules of mainstream can not meet the requirements of rain prevention and electromagnetic shielding in external environment, and are relatively complex to assemble, disassemble and fix. The connector and the module shell cannot be electrically continuous and waterproof sealed, and a locking strip is generally installed, so that the problems of complex loading and unloading, inconvenience in use and the like exist, and the development requirement of an open type case cannot be met.

At present, there are two kinds of common internal functional modules of a chassis, one of which is a VPX air-cooling module (as shown in fig. 1) meeting the VITA standard; one is an LRM air-cooled module (shown in fig. 2) that meets the ASSAC standard.

The following two problems are prevalent with current modules:

the connector cannot be completely sealed with the cold plate of the module housing after being installed, and the electrical continuity between the connector housing and the cold plate cannot be ensured, as shown in fig. 3;

the locking strips on the two sides of the module are adopted to lock after the module is inserted, the installation and the disassembly are more complicated, and the locking strips are not large in locking stroke, so that the module is not smoothly drawn out after the locking strips are loosened, as shown in figure 4.

Disclosure of Invention

In order to solve the technical problems that the module is complex to install and cannot meet the requirements of rain prevention and electromagnetic shielding, the invention provides the LRM module which can be quickly assembled and disassembled and can prevent rain and electromagnetic shielding.

The purpose of the invention is realized by adopting the following technical scheme. According to the LRM module which can be quickly assembled and disassembled and can prevent rain and electromagnetic shielding, the LRM module comprises a functional board card, a connector plug connected with the functional board card and a cold board box body used for accommodating the functional board card, wherein a connector installation groove for the connector plug to penetrate out is formed in the rear end of the cold board box body, and a cover plate for packaging the functional board card is covered on the cold board box body; composite waterproof conductive adhesive strips are filled between the connector plug and the cold plate box body and the cover plate as well as between the functional board card and the cold plate box body and the cover plate; the upper edge and the lower edge of the cold plate box body are arranged on the guide rail of the case in a sliding manner, and the front end of the cold plate box body is detachably arranged at the opening of the case and is provided with a pulling aid.

Furthermore, the outer side of the front end of the cold plate box body is provided with a mounting lug, and a non-releasing screw used for mounting the cold plate box body on the chassis is arranged on the mounting lug.

Furthermore, a plurality of heat dissipation teeth are symmetrically arranged on the back of the cold plate box body from top to bottom, a heat dissipation channel with the extending direction the same as the sliding and inserting direction of the module is arranged between the two rows of heat dissipation teeth, and a gap for communicating the heat dissipation channel with the edge of the cold plate box body is reserved between the adjacent heat dissipation teeth.

Furthermore, the heat dissipation teeth in the same row are parallel to each other, and the heat dissipation teeth are arranged in an inclined manner towards the rear end of the cold plate box body in the direction from the heat dissipation channel to the edge of the cold plate box body.

Furthermore, the included angle between the heat dissipation teeth and the extending direction of the heat dissipation channel is 45 degrees.

Furthermore, an annular composite waterproof conductive adhesive tape is arranged on the connector plug in a surrounding mode.

Furthermore, adhesive tape protrusions are arranged on two sides of the annular composite waterproof conductive adhesive tape, and the composite waterproof conductive adhesive tape filled between the functional board card and the cold plate box body and between the functional board card and the cover plate is connected with the adhesive tape protrusions.

Furthermore, the composite waterproof conductive adhesive tape is bonded at a corresponding position through sealing silicon rubber.

Furthermore, two pulling aids are symmetrically arranged at the front end of the cold plate box body from top to bottom.

Compared with the prior art, the invention has the advantages that: the module is matched with the upper and lower guide rails of the case, so that the module is smooth and silky when being installed, the module is assisted by the pulling aid when being inserted, the pulling aid can be clamped and fixed on the module after being inserted in place, and the pulling aid can also play a good auxiliary role when being detached; the module is fixed through the loose and non-falling screws on the upper and lower mounting lugs on the module, so that the module can be quickly detached from the case when detached; the waterproof structure design of the joint surfaces of all the parts of the module can meet the requirements of module-level electromagnetic shielding and rain prevention, and is suitable for open type and semi-open type chassis.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a perspective view of a prior art VPX air-cooled module that meets VITA standards;

FIG. 2 is a perspective view of a prior art LRM air cooling module that conforms to ASSAC standards;

FIG. 3 is a schematic view of a prior art connector with a module housing having a gap after installation;

FIG. 4 is a schematic view of locking strips on two sides of a module and a chassis rail in the prior art;

FIG. 5 is an exploded view of an LRM module with quick assembly and disassembly and with rain protection and electromagnetic shielding features according to an embodiment of the present invention;

FIG. 6 is a schematic view of the module of FIG. 5 mounted in a chassis and in a secured state;

FIG. 7 is a schematic view of the module of FIG. 5 inserted into a chassis but not engaged;

FIG. 8 is a schematic view of the module of FIG. 5 with the cover removed and the composite waterproof conductive adhesive tape;

FIG. 9 is a schematic view of the module of FIG. 5 shown with the cover removed;

FIG. 10 is a rear view of FIG. 5;

fig. 11 is an installation diagram of the connector and the functional board in fig. 5;

FIG. 12 is a schematic view of the cover plate of FIG. 5 installed;

FIG. 13 is a schematic view of the rail guide stage during insertion of the module of FIG. 5 into the chassis;

FIG. 14 is a schematic diagram of the plug-assist stage of the plug-assist apparatus during the process of inserting the module of FIG. 5 into the chassis;

FIG. 15 is a schematic view of the module of FIG. 5 inserted in place;

fig. 16 is a cross-sectional view of the module of fig. 5 inserted into a chassis.

[ reference numerals ]

101-VPX connector, 102-locking bar I, 201-LRM connector, 20101-guide column, 202-locking bar II, 3-connector and cold plate box gap, 401-module guide rail groove, 402-locking bar and guide rail gap, 5-function board card, 6-cold plate box, 601-heat dissipation tooth, 602-heat dissipation channel, 603-mounting ear, 604-connector mounting groove, 605-step, 606-adhesive tape mounting groove, 7-cover plate, 8-pulling aid, 801-handle groove, 802-roller, 803-handle, 9-M4 release screw, 10-cabinet, 1001-guide rail, 1002-roller groove, 1003-back cover plate component, 1004-air duct, 1005-back plate mounting plate, 1006-connector socket, 1007-a back plate, 1008-a power supply connector, 1009-a waterproof fan, 1010-a sealed cavity, 1011-a drain hole, 1012-a waterproof vent valve, 11-an annular composite waterproof conductive adhesive tape, 1101-an adhesive tape bulge, 12-a composite waterproof conductive adhesive tape, 13-an air inlet, 14-an air outlet and 15-a connector plug.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An embodiment of an LRM module that can be quickly assembled and disassembled and can prevent rain and electromagnetic shielding is shown in fig. 5 to 16. The LRM module comprises a functional board card 5, a cold plate box body 6, a cover plate 7, a pulling aid 8, an M4 loose-proof screw 9 and a connector plug 15. The connector plug 15 is part of an LRM connector which also comprises a connector socket, which is located in the chassis.

The whole cold drawing box body 6 is rectangular, a thin plate-shaped box body, the front surface of the box body is open, and the inside cavity is used for placing the functional board card 5. The back of the cold plate box body 6 is provided with heat dissipation teeth 601, a plurality of heat dissipation teeth 601 are symmetrically arranged on two sides of the back of the cold plate box body 6, the heat dissipation teeth 601 on any side are arranged in parallel, and a heat dissipation channel 602 is left between the heat dissipation teeth 601 on two sides. One end of the heat dissipation channel 602 is an air inlet 13, the air inlet 13 is located at the head of the cold plate box 6, the heat dissipation teeth 601 on any side are inclined from one side close to the head and the heat dissipation channel 602 to the tail and the outer edge, in this embodiment, the inclination angle between the heat dissipation teeth 601 and the module insertion direction is 45 °. A gap is left between two adjacent heat dissipation teeth 601 on any side of the heat dissipation teeth 601, and the edge of the gap close to the cold plate box body 6 is an air outlet 14. The cooling air enters the gaps between the heat dissipation teeth 601 from the air inlet 13 through the heat dissipation channel 602, and flows out from the air outlet 14. The function board card 5 is arranged in the cold plate box body 6, the area where the function board card 5 is located is the same as the area where the heat dissipation teeth 601 are located, and heat dissipated by the function board card 5 can be timely conducted out under the action of cooling air. The structural design of the heat dissipation teeth 601 can change a single-side air channel into two-side air channels, and effectively reduces wind resistance.

The connector plug 15 electrically connected with the function board card 5 is installed at the tail of the function board card 5, a connector mounting groove 604 is formed in the tail of the cold plate box body 6, and the connector mounting groove 604 is communicated with the inner cavity of the cold plate box body 6 and the outside of the cold plate box body 6 and used for installing the connector plug 15. After the functional board card 5 and the connector plug 15 are installed on the cold plate box body 6, the cover plate 7 is covered, and the functional board card 5 is packaged in the cold plate box body 6. An annular composite waterproof conductive rubber strip 11 is arranged on the connector plug 15 in a surrounding manner, and the annular composite waterproof conductive rubber strip 11 is used for filling and sealing gaps between the connector plug 15 and the connector mounting groove 604 and between the connector plug and the cover plate 7. After the connector plug 15 is installed, its insertion end extends out of the cold plate box 6, and its two sides are provided with guide posts 20101 for guiding when being inserted. After the connector plug 15 is installed in place, the binding surfaces of the connector plug 15, the cold plate box body 6 and the cover plate 7 are provided with the annular composite waterproof conductive adhesive strips 11, so that the rain prevention and the electromagnetic shielding performance after the connector plug 15 is installed are ensured.

The inner wall of 6 openings of cold drawing box body encircles and sets up step 605, and it has a plurality of screw holes to distribute on the step 605, covers apron 7 on cold drawing box body 6, and the afterbody of apron 7 presses the compound waterproof conducting strip 11 of annular on connector plug 15 simultaneously, then uses the screw to fix apron 7 on cold drawing box body 6. The inside of step 605 sets up adhesive tape mounting groove 606, and compound waterproof conducting strip 12 of adhesive tape mounting groove 606 installation. The adhesive tape mounting groove 606 is wide near the connector mounting groove 604, the adhesive tape protrusions 1101 are arranged on two sides of the corresponding positions of the annular composite waterproof conductive adhesive tape 11 and the adhesive tape mounting groove 606, the end portions of the adhesive tape protrusions 1101 and the end portions of the composite waterproof conductive adhesive tape 12 are embedded in the end portions of the adhesive tape mounting groove 605 together, and the adhesive tape protrusions are used for guaranteeing the sealing performance and the electric continuity of the mounting back cover plate 7 of the cover plate 7 and the matching surface of the box body.

The annular composite waterproof conductive rubber strip 11 on the connector plug 15 and the composite waterproof conductive rubber strip 12 on the cold plate box body 6 are fixedly bonded by adopting sealing silicon rubber.

The two sides of the front end of the cold plate box body 6 are provided with a mounting lug 607, and the mounting lug 607 is provided with an M4 loose and non-detachable screw 9 for replacing a locking strip to fix the module. Two sides of the front end of the cold plate box body 6 are respectively provided with a pulling aid 8, and the pulling aids 8 and the M4 loose-proof screws 9 on the same side are distributed in the thickness direction of the cold plate box body 6. The extraction aid 8 rotates about a pin inserted into the cold plate cassette 6, the pin being perpendicular to the cold plate cassette 6. The front end of the cold plate box 6 is provided with a handle groove 801 for placing a handle 803 on the pulling aid 8, and the end part of the other end of the cold plate box extends out of the edge of the cold plate box 6 and is provided with a roller 802.

The front end of the chassis 10 where the module is installed is open, a plurality of guide rails 1001 are correspondingly arranged on the upper and lower surfaces of the interior of the chassis 10, the module is vertically inserted into the chassis 10, and the upper and lower edges of the module are slidably arranged on the corresponding guide rails 1001. The upper and lower sides of the front opening of the case 10 are respectively provided with a threaded hole corresponding to the M4 release screw 9 and a roller groove 1002 corresponding to the extraction aid 8, and the upper and lower sides are arranged opposite to the opening of the roller groove 1002 corresponding to the same module. When the module is inserted, the extending direction of the extraction aid 8 is the same as the inserting direction, the roller 802 of the extraction aid 8 moves to the opening of the roller groove 1002, then the handle 803 is rotated to enable the roller 802 to enter the groove 1002, meanwhile, the handle of the extraction aid 8 is nested in the handle groove 801, in the process, the module is installed in place, the connector plug is inserted into the connector socket, and then the M4 loose non-release screw 9 is screwed into the corresponding threaded hole to enable the module to be fixed. When the module is disassembled, the M4 is unscrewed to release the screw 9, the handle 801 is pulled outwards to separate the module from the chassis, and the module is taken out. When the module is assembled and disassembled by the aid of the pulling aid 8, the whole process is smoother.

Gaps are reserved among a plurality of guide rails 1001 of the case 10, an air duct 1004 is reserved between the guide rail on any side and an external shell at the position corresponding to the case 10, a rear cover plate assembly 1003 is arranged at the tail end of the case 10, a cavity correspondingly communicated with the air duct is arranged on the rear cover plate assembly 1003, a waterproof fan 1009 communicated with the outside is arranged at the tail of the cavity, air at the opening of the case enters the inside of the case under the action of the waterproof fan 1009, and then enters the outside air again along a heat dissipation channel 602, a gap between the heat dissipation teeth 601, the air duct 1004 and the waterproof fan 1009, so that heat generated by the module is taken away.

Set up backplate mounting panel 1005 in the back shroud subassembly 1003, backplate part 1007 is installed to the rear side of backplate mounting panel, still set up a plurality of connector socket 1006 of being connected with backplate part 1007 on the backplate mounting panel 1005, and the grafting end of connector socket 1006 is towards the front side, waits that the module cartridge targets in place, and the connector plug 15 and the connector socket 1006 of functional module rear end are pegged graft.

The rear end of the case and the rear cover plate assembly form a sealed cavity 1010, composite double-peak conductive rubber strips are arranged among the abutted seams of the side wall of the sealed cavity 1010, the back plate mounting plate 1005, the connector socket 1006, the back plate component 1007 and the cable assembly are all positioned in the sealed cavity 1010, after the module is inserted in the case, the connector plug 15 at the rear end of the module is inserted into the connector socket 1006, the annular composite waterproof conductive rubber strips 11 on the connector plug 15 are tightly matched with the composite double-peak conductive rubber strips corresponding to the insertion positions of the sealed cavity 1010, and water leakage is prevented. The wall body of the sealed cavity 1010 close to the waterproof fan 1009 is provided with a power supply connector 1008 in a penetrating manner, the power supply connector 1008 is a waterproof connector, and the inside of the case supplies power to the waterproof fan 1009 through the power supply connector 1008. A waterproof vent valve 1012 is arranged on a wall body between the sealed cavity 1010 and the air duct 1004 at the lower side, and is used for balancing the air pressure inside and outside the sealed cavity when the case is in a plateau environment with lower air pressure. A water drainage hole 1011 is formed in the position, close to the rear cover plate assembly, of the bottom shell of the case, and water enters the case along with air, is gathered to the bottom of the case and is drained from the water drainage hole 1011.

The module is matched with the upper and lower guide rails of the case 10, so that the module is smooth and silky when being installed, the module is assisted by the pulling aid 8 when being inserted, the pulling aid 8 can be clamped and fixed on the module after being inserted in place, and the pulling aid 8 can also play a good auxiliary role when being detached; the module is fixed through the loose and non-falling screws on the upper and lower mounting lugs on the module, so that the module can be quickly detached from the case when detached; the waterproof structure design of the joint surfaces of all the parts of the module can meet the requirements of module-level electromagnetic shielding and rain prevention, and is suitable for open type and semi-open type chassis.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a but quick assembly disassembly and can prevent rain and electromagnetic shield's LRM module, includes function integrated circuit board (5), connector plug (15) be connected with function integrated circuit board (5), its characterized in that: the connector plug-in type cold plate connector further comprises a cold plate box body (6) used for accommodating the functional board card (5), a connector mounting groove (604) for a connector plug (15) to penetrate out is formed in the rear end of the cold plate box body (6), and a cover plate (7) for packaging the functional board card (5) is covered on the cold plate box body (6); composite waterproof conductive adhesive strips are filled between the connector plug (15) and the cold plate box body (6) and the cover plate (7) as well as between the functional board card (5) and the cold plate box body (6) and the cover plate (7); the upper edge and the lower edge of the cold plate box body (6) are arranged on the guide rail of the case in a sliding manner, and the front end of the cold plate box body (6) is detachably arranged at the opening of the case and is provided with a pulling aid (8).

2. The LRM module of claim 1, wherein the LRM module is capable of being quickly assembled and disassembled and is capable of being protected from rain and electromagnetic shielding, and further comprising: the outer side of the front end of the cold plate box body (6) is provided with a mounting lug, and a loosening-preventing screw used for mounting the cold plate box body (6) on the case is arranged on the mounting lug.

3. The LRM module of claim 1, wherein the LRM module is capable of being quickly assembled and disassembled and is capable of being protected from rain and electromagnetic shielding, and further comprising: the back of the cold plate box body is provided with a plurality of heat dissipation teeth (601) in an up-down symmetrical arrangement mode, heat dissipation channels (602) with the extending direction the same as the sliding and inserting direction of the modules are arranged between the two rows of heat dissipation teeth (601), and gaps communicated with the heat dissipation channels (602) and the edge of the cold plate box body are reserved between the adjacent heat dissipation teeth (601).

4. The LRM module of claim 3, wherein the LRM module is fast-detachable, rain-proof and electromagnetic shielding, and further comprises: the heat dissipation teeth (601) in the same row are parallel to each other, and the heat dissipation teeth (601) are arranged in an inclined manner towards the rear end of the cold plate box body in the direction from the heat dissipation channel to the edge of the cold plate box body.

5. The LRM module of claim 4, wherein the LRM module is fast-detachable, rain-proof and electromagnetic shielding, and further comprises: the included angle between the extension directions of the heat dissipation teeth (601) and the heat dissipation channel (602) is 45 degrees.

6. The LRM module of claim 1, wherein the LRM module is capable of being quickly assembled and disassembled and is capable of being protected from rain and electromagnetic shielding, and further comprising: and an annular composite waterproof conductive adhesive tape (11) is arranged on the connector plug (15) in a surrounding manner.

7. The LRM module of claim 6, wherein the LRM module is fast-detachable, rain-proof and electromagnetic shielding, and further comprises: the two sides of the annular composite waterproof conductive adhesive tape (11) are provided with adhesive tape protrusions (1101), and the composite waterproof conductive adhesive tape filled between the functional board card (5) and the cold plate box body (6) and the cover plate (7) is mutually connected with the adhesive tape protrusions (1101).

8. The LRM module of claim 1, wherein the LRM module is capable of being quickly assembled and disassembled and is capable of being protected from rain and electromagnetic shielding, and further comprising: the composite waterproof conductive adhesive tape is bonded at the corresponding position through the sealing silicon rubber.

9. The LRM module of claim 1, wherein the LRM module is capable of being quickly assembled and disassembled and is capable of being protected from rain and electromagnetic shielding, and further comprising: two pulling aids (8) are symmetrically arranged at the front end of the cold plate box body from top to bottom.