A VPX plug-in box

Abstract

The present invention discloses a VPX plug-in box, comprising a front plug-in box, a front plug-in module disposed therein, an air inlet device disposed at the bottom of the front plug-in box, and a plurality of plug-in box ventilation holes connected to the air inlet device disposed at the bottom and top of the front plug-in box; an adjustable backplane assembly disposed on a side end surface of the front plug-in box and connected to the front plug-in module; a rear plug-in box disposed on an end surface of the adjustable backplane assembly facing away from the front plug-in box; a rear plug-in module disposed therein; and a heat dissipation device disposed at the top of the front and rear plug-in boxes. Under the action of the air inlet device, cold air enters the plug-in box from the bottom, flows through the plug-in box through the plug-in box ventilation holes, and then is taken out of the hot air by the heat dissipation device disposed at the top, thereby improving the heat dissipation effect of the plug-in box.

Description

Technical Field

[0001] The invention belongs to the technical field of plug-in boxes, and in particular relates to a VPX plug-in box. Background Art

[0002] Modern VPX chassis have numerous models, varieties and functions. However, due to the numerous parts and complex shapes inside the chassis, coupled with the limited space inside the chassis, the chassis heat dissipation effect becomes a problem.

[0003] Patent application number CN202223293696.0 discloses a portable heat dissipation VPX chassis, and discloses: a heat dissipation mesh frame is provided on the front side of the VPX chassis; an auxiliary component is provided on the VPX chassis, which is used to continuously inhale and exhale the air inside the VPX chassis to increase air circulation; a back plate is embedded and installed on the back side of the VPX chassis, and four sets of heat dissipation fans are embedded and installed on the back plate. That is, the patent adopts the cooperation of the heat dissipation mesh frame, four sets of heat dissipation fans and auxiliary components to circulate the hot air inside the VPX chassis, thereby achieving the heat dissipation effect. However, due to the large number of internal parts and complex shapes of the VPX chassis, the above heat dissipation method has a small air volume and poor heat dissipation effect, which cannot meet the heat dissipation requirements of high-power heat source plug-in modules.

[0004] Patent application number CN202310163959.6 discloses a heat dissipation structure of a VPX module and a VPX chassis equipped with the heat dissipation structure, including an air inlet, a primary boost fan structure, a secondary boost fan structure and an air outlet. The air inlet and the air outlet are respectively arranged on the opposite side walls of the chassis. The primary boost fan structure is installed at the air inlet inside the chassis, and the secondary boost fan structure is installed at the air outlet inside the chassis. The heat source device is installed between the primary boost fan structure and the secondary boost fan structure. A horizontal ventilation structure is provided in the heat source device. The air inlet, the ventilation structure and the air outlet form a horizontally through-going straight heat dissipation duct. Although the primary boost fan structure and the secondary boost fan structure of this heat dissipation structure both use multiple high-speed fans to cooperate in heat dissipation, it can be seen from the attached drawings that a horizontal straight heat dissipation duct is formed between the two. The cold air entering the chassis mainly acts on the internal components between the air inlet and the air outlet in the chassis. There is a situation where the heat dissipation effect of the internal components that are not between the air inlet and the air outlet is poor. Summary of the Invention

[0005] In order to solve the above problems, the present invention aims to provide a VPX pluggable box.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A VPX subrack includes a front subrack, a front plug-in module is arranged in the front subrack, an air inlet device is arranged at the bottom of the front subrack, and a plurality of subrack ventilation holes connected to the air inlet device are arranged at the bottom and top of the front subrack;

[0008] The adjustable backplane assembly is located on the side surface of the front plug-in box and is connected to the front plug-in module;

[0009] The rear plug-in box is arranged on the end surface of the adjustable backplane assembly away from the front plug-in box; the rear plug-in module is arranged in the rear plug-in box;

[0010] The heat dissipation device is arranged on the top of the front plug-in box and the rear plug-in box.

[0011] The air inlet device comprises a fan bracket arranged at the bottom of the front plug-in box, and a plurality of air inlet fans are arranged on the fan bracket.

[0012] The front plug-in box is provided with a first upper guide groove and a first lower guide groove for guiding and locking the front plug-in module; the first upper guide groove and the first lower guide groove are provided in a one-to-one correspondence.

[0013] The front plug-in box is provided with a notch for facilitating the pushing and pulling out of the front plug-in module, as well as a plurality of first mounting holes.

[0014] A second upper guide groove and a second lower guide groove for guiding the insertion and removal of the rear plug-in module are provided in the rear plug-in box; the second upper guide groove and the second lower guide groove are provided in a one-to-one correspondence.

[0015] Two opposite sides of the top of the rear plug-in box are respectively provided with a slope and an arc-shaped groove for ventilation and diversion; a plurality of second mounting holes are provided on the peripheral box wall of the rear plug-in box.

[0016] The adjustable backplane assembly includes a carrying frame, an adjustment frame arranged on one end surface of the carrying frame and slidably connected to the carrying frame, a locker and a transmission belt arranged on the opposite end surfaces of the adjustment frame, a fixed pulley arranged on the adjustment frame and connected to the transmission belt, an adjuster and a driver arranged on the top of the adjustment frame, and a backplane arranged on the carrying frame and passing through the adjustment frame to be connected to the front plug-in module; the transmission belt is arranged between the carrying frame and the adjustment frame.

[0017] A first guide groove is provided on two opposite sides of the carrying frame; a first guide rail corresponding to the first guide groove is provided on two opposite sides of the adjustment frame; the carrying frame and the adjustment frame are slidably connected through the first guide groove and the first guide rail.

[0018] The heat dissipation device includes a heat dissipation fan, a heat dissipation duct, and a shielded ventilation window. The heat dissipation duct is arranged at the air outlet end of the heat dissipation fan, and the heat dissipation duct is connected to the shielded ventilation window. A fan mounting plate is arranged between the heat dissipation fan and the heat dissipation duct. A heat dissipation left bracket and a heat dissipation right bracket are respectively arranged at both ends in the length direction of the fan mounting plate, and a rear wind shield and a front wind shield guide plate are respectively arranged at the air inlet end of the heat dissipation fan; the front wind shield guide plate is installed on the top of the front plug-in box, and the heat dissipation duct is installed on the top of the rear plug-in box.

[0019] The heat dissipation device is a plurality of heat dissipation fans arranged in parallel, and the heat dissipation air ducts are arranged in a one-to-one correspondence with the plurality of heat dissipation fans.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] The VPX subrack of the present invention has an air inlet device at the bottom of the front subrack, multiple vents connected to the air inlet device at the bottom and top of the front subrack, and heat sinks located at the tops of the front and rear subracks. Cool air enters the subrack from the bottom under the air inlet device, flows through the subrack through the vents, and then is removed by the heat sink located at the top, achieving efficient heat dissipation.

[0022] An adjustable backplane assembly is provided so that the backplane can be adjusted left and right, thereby achieving precise insertion and removal of plug-in modules, avoiding interference in the insertion and removal of plug-in modules caused by part processing errors or deformation of the printed circuit board when the plug-in modules are locked; a locking device is provided so that the adjustable backplane assembly has a quick locking function.

[0023] The front and rear plug-in boxes are integrated to further avoid interference when plugging in and out of the plug-in modules or deformation of the printed circuit board when the plug-in modules are locked.

[0024] The VPX plug-in box reduces the parts return rate, reduces manufacturing costs, improves product production efficiency, improves product safety and reliability, improves product environmental adaptability, and improves product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a structural diagram of a VPX pluggable box in the present invention;

[0027] Figure 2 for Figure 1 Bottom structural diagram

[0028] Figure 3 This is an exploded view of a VPX pluggable box in the present invention;

[0029] Figure 4 This is a schematic structural diagram of the front plug-in box in the present invention;

[0030] Figure 5 This is a schematic structural diagram of the rear plug-in box in the present invention;

[0031] Figure 6 Schematic diagram of the structure of the heat dissipation device of the present invention;

[0032] Figure 7 Schematic diagram of the structure of the air inlet device in the present invention

[0033] Figure 8 Schematic diagram of the structure of the lower windshield of the present invention;

[0034] Figure 9 Schematic diagram of the structure of the adjustable backplane assembly in the present invention;

[0035] Figure 10 It is a structural diagram of the adjustment frame in the present invention;

[0036] Figure 11 Schematic diagram of the structure of the locking device in the present invention;

[0037] Figure 12 It is a structural schematic diagram of the lock seat in the present invention;

[0038] Figure 13 Schematic diagram of the structure of the locking block 1 in the present invention;

[0039] Figure 14 Schematic diagram of the structure of the regulator in the present invention;

[0040] Figure 15 Schematic diagram of the structure of the driver in the present invention;

[0041] Figure numerals: 1-front plug-in box, 11-front plug-in module, 12-plug-in box ventilation hole, 13-first upper guide groove, 14-first lower guide groove, 15-gap, 2-air inlet device, 21-fan bracket, 22-air inlet fan, 3-adjustable backplane assembly, 31-carrying frame, 311-first guide groove, 32-adjustment frame, 321-first guide rail, 33-locker, 331-lock seat, 332-screw, 333-locking block 1, 3331-second inclined surface, 334-locking block 2, 335-square groove, 3351-first inclined surface, 336-long circular groove, 34-transmission belt, 35-fixed pulley, 36-adjuster, 36 1-adjustment seat, 362-first countersunk hole, 363-adjustment pin, 364-adjustment wheel, 365-fastening screw, 366-retaining ring, 37-driver, 371-wheel seat, 372-second countersunk hole, 373-friction wheel, 38-back plate, 4-rear plug-in box, 41-rear plug-in module, 42-second upper guide groove, 43-second lower guide groove, 44-ramp, 45-arc groove, 5-heat dissipation device, 51-heat dissipation fan, 52-heat dissipation air duct, 53-shielded ventilation window, 54-fan mounting plate, 55-heat dissipation left bracket, 56-heat dissipation right bracket, 57-rear wind shield, 58-front wind shield deflector, 6-lower wind shield. DETAILED DESCRIPTION

[0042] The present invention is further described below with reference to the accompanying drawings and specific embodiments. However, it should not be understood that the scope of the subject matter described in the present invention is limited to the following embodiments. Without departing from the above technical ideas of the present invention, various modifications, substitutions and changes made according to common technical knowledge and customary means in the field are included in the scope of the present invention.

[0043] Combined with reference Figures 1 to 15 A VPX subrack of the present invention includes a front subrack 1, a front plug-in module 11 is provided in the front subrack 1, an air inlet device 2 is provided at the bottom of the front subrack 1, and a plurality of subrack ventilation holes 12 connected to the air inlet device 2 are provided at the bottom and top of the front subrack 1;

[0044] The debuggable backplane assembly 3 is provided on the side surface of the front plug-in box 1 and is connected to the front plug-in module 11;

[0045] The rear plug-in box 4 is provided on the end surface of the adjustable backplane assembly 3 facing away from the front plug-in box 1; a rear plug-in module 41 is provided in the rear plug-in box 4;

[0046] The heat dissipation device 5 is provided on the top of the front plug-in box 1 and the rear plug-in box 4 .

[0047] Specifically, the front plug-in box 1 is a monolithic structure, precision-cast from aluminum alloy and then CNC-machined. The front plug-in box 1 is rectangular in shape, with a hollow cavity inside for mounting the front plug-in module 11. This cavity communicates with one of the opposing side walls of the front plug-in box 1. In this embodiment, multiple front plug-in modules 11 are installed side by side within the front plug-in box 1.

[0048] The front plug-in box 1 is provided with a first upper guide groove 13 and a first lower guide groove 14 for guiding the insertion and removal and locking of the front plug-in module 11. The first upper guide groove 13 and the first lower guide groove 14 are arranged in a one-to-one correspondence. Specifically, the first upper guide groove 13 and the first lower guide groove 14 are provided on the two side walls connected to the hollow cavity. Each side wall is provided with multiple first upper guide grooves 13 at the top and a first lower guide groove 14 at the bottom. The first upper guide grooves 13 and the first lower guide grooves 14 are processed using a unified reference, and the processed shape and position are highly accurate. This prevents interference with the insertion and removal of the front plug-in module 11 due to misalignment of the first upper and lower guide grooves, or deformation of the printed circuit board when the front plug-in module 11 is locked.

[0049] A plurality of ventilation holes 12 connected to the air inlet blower 22 are provided at the bottom and top of the front plug-in box 1 .

[0050] The front plug-in box 1 is equipped with notches 15 for facilitating the insertion and removal of the front plug-in module 11, as well as multiple first mounting holes. The notches 15 are located above and below each guide slot at the front end of the front plug-in box 1. They facilitate insertion and removal of the front plug-in module by the extraction aid. The first mounting holes are located along the perimeter of the front plug-in box 1 for connection to other components.

[0051] An air intake device 2 is installed at the bottom of the front pluggable box 1 to assist air intake and increase air pressure. The air intake device 2 comprises a fan bracket 21 mounted at the bottom of the front pluggable box 1 and multiple air intake fans 22 mounted on the fan bracket 21. In this embodiment, the fan bracket 21 is formed from a bent aluminum alloy sheet. Multiple air intake fans 22 are arranged in parallel.

[0052] The adjustable backplane assembly 3 is arranged on the side surface of the front plug-in box 1 and is connected to the front plug-in module 11; the adjustable backplane assembly 3 includes a carrying frame 31, an adjustment frame 32 arranged on one end surface of the carrying frame 31 and slidably connected to the carrying frame 31, a locker 33 and a transmission belt 34 arranged on the opposite end surfaces of the adjustment frame 32, a fixed pulley 35 arranged on the adjustment frame 32 and connected to the transmission belt 34, and an adjuster 36 and a driver 37 arranged on the top of the adjustment frame 32, and a backplane 38 arranged on the carrying frame 31 and passing through the adjustment frame 32 to be connected to the front plug-in module 11; the transmission belt is arranged between the carrying frame 31 and the adjustment frame 32.

[0053] Specifically, the carrier frame 31 is configured as a rectangular frame structure, with a first guide groove 311 provided on opposite sides of the carrier frame 31; that is, a first guide groove 311 is provided at the top and bottom of the carrier frame 31, and the first guide groove 311 is provided along the length of the carrier frame 31. The back plate 38 is detachably connected to the carrier frame 31 by screws.

[0054] The adjustment frame 32 is slidably connected to the carrier frame 31 and is arranged in a rectangular frame. It is CNC-machined from aluminum alloy plate. For ease of distinction, the two opposing end faces of the adjustment frame 32 are referred to as the first end face and the second end face. The first end face of the adjustment frame 32 faces the front plug-in box 1, and the carrier frame 31 is located on the second end face of the adjustment frame 32. The backplane 38 is connected to the carrier frame 31 and extends through the adjustment frame 32 to connect to the front plug-in module 11. Pin holes for the front plug-in module 11 are provided at the connection between the front plug-in module 11 and the backplane 38, and corresponding guide pins for the backplane 38 are provided on the backplane 38.

[0055] A first guide rail 321 is provided at the top and bottom of the second end surface of the adjustment frame 32 , respectively, along the length direction of the adjustment frame 32 and corresponding to the first guide slot 311 .

[0056] The adjustment frame 32 is provided with multiple positioning holes for mounting locating pins. Specifically, these holes are located at the bottom of the adjustment frame 32 and are evenly distributed along its length. Each positioning hole is fitted with a corresponding locating pin, which is threaded into the hole. The locating pins are used to position the backplate 38 adjustment assembly within the front plug-in box 1 and are made from stainless steel rods.

[0057] The locker 33 is detachably provided on the first end face of the adjustment frame 32 and is used for installing and locking the adjustable back panel 38 assembly in the front plug-in box 1. In this embodiment, the locker 33 is provided in two pieces and is provided at the top of the first end face. The two lockers 33 are provided along the length direction of the adjustment frame 32 and are provided on the same straight line.

[0058] The locker 33 includes a lock base 331 detachably connected to the adjustment frame 32, a screw 332 disposed within the lock base 331, and two locking blocks 333 and 334 disposed at either end of the screw. Specifically, the lock base 331 is secured to the adjustment frame 32 via countersunk screws. In this embodiment, the structures of the first and second locking blocks 333 and 334 are identical.

[0059] At both ends of the lock base 331 along its length, square grooves 335 are provided for locking and guiding the first and second lock blocks 333 and 334. Specifically, two square grooves 335 are provided on each lock base 331. The screw rod 332 is attached to the first and second lock blocks 333 and 334 at both ends and then installed within the square grooves 335. Each square groove 335 is provided with a first inclined surface 3351 along its length. The lock base 331 is also provided with an oblong groove 336 for guiding and limiting the screw rod 332.

[0060] One end of the screw rod 332 is sleeved in the locking block 1 333 to realize axial guidance; the other end is connected to the locking block 2 334 through a thread to form a thread transmission, thereby realizing the locking and loosening of the locker 33; a second inclined surface 3331 is respectively provided on the locking block 1 333 and the locking block 2 334 to fit the first inclined surface 3351, and the locking guidance is realized through the cooperation between the first inclined surface 3351 and the second inclined surface 3331.

[0061] The transmission belt 34 is provided on the second end surface of the adjustment frame 32 and is located between the adjustment frame 32 and the carrying frame 31. A plurality of fixed pulleys 35 are provided around the second end surface, and the transmission belt 34 is connected to the adjustment frame 32 via the fixed pulleys 35.

[0062] In this embodiment, the number of the fixed pulleys 35 is five, four of which are located at the four corners of the adjustment frame 32 and the other is located at the middle position of the bottom of the adjustment frame 32; the fixed pulley 35 is installed on the second end face of the adjustment frame 32 through its own screw; the transmission belt 34 is connected to the five fixed pulleys 35.

[0063] The adjuster 36 and the driver 37 are arranged on the top of the adjustment frame 32 and are connected to the transmission belt 34 respectively; the positions of the adjuster 36 and the driver 37 relative to the top of the adjustment frame 32 are adjustable up and down.

[0064] Specifically, a first mounting slot for installing the adjuster 36 and a second mounting slot for installing the driver 37 are provided at the top of the adjustment frame 32; the first mounting slot is provided at the center position of the top of the adjustment frame 32, and the first mounting slot is connected to the first end face and the second end face of the adjustment frame 32; the second mounting slots are symmetrically provided on both sides of the first mounting slot, that is, two second mounting slots are provided, and the second end faces of the adjustment frame 32 are connected.

[0065] The adjuster 36 includes an adjustment seat 361 that is removably connected to the first mounting slot. Specifically, a first countersunk hole 362 is provided at the corresponding position between the adjustment seat 361 and the first mounting slot. The adjustment seat 361 is mounted in the first mounting slot using a countersunk screw passing through the first countersunk hole 362. An adjustment pin 363 is disposed within the adjustment seat 361; the adjustment pin 363 is perpendicular to the adjustment seat 361. Specifically, the adjustment pin 363 penetrates the adjustment seat 361 through the first end surface of the adjustment frame 32 and exits through the second end surface of the adjustment frame 32. An adjustment wheel 364 is connected to the adjustment pin 363 at one end of the second end surface. The adjustment wheel 364 is connected to the drive belt 34. A set screw 365 is provided on the adjustment wheel 364 for securing the adjustment wheel. The adjustment pin 363 also has a retaining ring 366 connected to the adjustment seat 361 and positioned near the end where the adjustment wheel 364 is located. Adjuster 36 provides a power source for the backplate adjustment assembly. Turning adjustment pin 363 causes adjustment wheel 364 to drive the transmission system, achieving left-right displacement of backplate 38. Adjustment wheel 364 is machined from a stainless steel rod and fits over the tail of adjustment pin 363 and is secured with set screw 365. During operation, the outer diameter of adjustment wheel 364 makes close contact with drive belt 34. The torque of adjustment pin 363 drives the drive belt 34 to achieve adjustment. Adjustment pin 363 is machined from a stainless steel rod. The middle shaft diameter is mounted in the adjustment seat, while the tail shaft diameter fits over adjustment wheel 364. The head has a hexagonal countersunk hole to facilitate turning with a twisting tool.

[0066] Two drivers 37 are provided, each including a wheel seat 371 detachably connected to the second mounting slot. Specifically, a second countersunk hole 372 is provided at a position corresponding to the second mounting slot on the wheel seat 371. The wheel seat 371 is mounted in the second guide slot via a countersunk screw passing through the second countersunk hole 372. The wheel seat 371 is CNC-machined from an aluminum alloy plate.

[0067] A friction wheel 373 is threadedly connected to one end of the wheel seat 371. The friction wheel 373 is located outside the second mounting slot, on the second end surface, and is connected to the drive belt 34. The positive or negative torque transmitted by the drive belt 34 drives the carrier frame 31 to the left or right, adjusting the left or right position of the backplate 38. The hub of the friction wheel 373 is made of silicone rubber and features a built-in sliding bearing. The end of the spindle is provided with a Phillips screwdriver slot and a mounting thread at the rear end.

[0068] The second end face of the adjustment frame 32 is also provided with a pressure roller connected to the transmission belt 34. The pressure rollers are arranged in pairs on either side of the adjuster 36 and the driver 37. Specifically, a set of pressure rollers is provided on either side of the friction wheel 373 and the adjustment wheel 364. The pressure rollers are connected to the adjustment frame 32 and the transmission belt 34 via screws provided therewith.

[0069] The rear plug-in box 4 is a monolithic structure, precision-cast from aluminum alloy and then CNC-machined. A rear plug-in module 41 is mounted within the rear plug-in box 4. A second upper guide slot 42 and a second lower guide slot 43 are provided within the rear plug-in box 4 to guide the insertion and removal of the rear plug-in module 41. The second upper guide slot 42 and the second lower guide slot 43 are arranged in a one-to-one correspondence.

[0070] The top of the rear plug box 4 is provided with a slope 44 and an arc groove 45 for ventilation and diversion on two opposite sides respectively; a plurality of second mounting holes are provided on the peripheral wall of the rear plug box 4 for detachable connection with other components.

[0071] The heat dissipation device 5 includes a plurality of heat dissipation fans 51 arranged in parallel, heat dissipation ducts 52 arranged at the air outlet ends of the heat dissipation fans 51 and corresponding to the heat dissipation fans 51 one by one, shielded ventilation windows 53 connected to the heat dissipation ducts 52, a fan mounting plate 54 arranged between the heat dissipation fans 51 and the heat dissipation ducts 52, a heat dissipation left bracket 55 and a heat dissipation right bracket 56 arranged at both ends of the fan mounting plate 54 in the longitudinal direction, and a rear wind shield 57 and a front wind shield deflector 58 arranged in sequence at the air inlet end of the heat dissipation fan 51; the front wind shield deflector 58 is installed on the top of the front plug-in box 1, and the heat dissipation duct 52 is installed on the top of the rear plug-in box 4.

[0072] Specifically, according to the air inlet direction, the heat dissipation device 5 includes a front wind deflector 58, a rear wind deflector 57, a heat dissipation fan 51, a fan mounting plate 54, a heat dissipation duct 52 and a shielded ventilation window 53 connected in sequence; and adjacent components are detachably connected.

[0073] In this embodiment, there are eight heat dissipation fans 51 arranged in parallel; a large air volume axial flow fan is used, such as the heat dissipation fan 1DS4028L12SC.

[0074] The heat dissipation duct 52 is arranged at the air outlet end of the heat dissipation fan 51 and is arranged one-to-one with the heat dissipation fan 51; the heat dissipation duct 52 is mainly used for hot air discharge and diversion, separating the wind beams of each heat dissipation fan 51, and forming an independent air duct for each heat dissipation fan 51.

[0075] In this embodiment, eight heat dissipation channels are provided, with adjacent heat dissipation channels 52 separated by partitions. Each channel is connected to a heat dissipation fan 51 in a one-to-one correspondence. The eight heat dissipation channels 52 are arranged in parallel, formed from aluminum alloy plates that are bent and welded together. They are connected to the air outlet of the heat dissipation fan 51. A shielded ventilation window 53 is connected to the end of the heat dissipation channel 52 facing away from the heat dissipation fan 51.

[0076] The cooling fan 51 is connected to the cooling duct 52 via a fan mounting plate 54. The fan mounting plate 54 is a rectangular plate. It is provided with multiple first ventilation holes and plate mounting holes. The first ventilation holes correspond to each cooling fan 51 and cooling duct 52, i.e., in this embodiment, there are eight first ventilation holes. The fan mounting plate 54 is made of stainless steel and primarily serves to block the gaps between the cooling fans 51 to prevent hot air from entering the rear plug-in box 4.

[0077] A left heat dissipation bracket 55 and a right heat dissipation bracket 56 are perpendicularly connected to the fan mounting plate 54 at either end of its length. These brackets face the cooling duct 52 and connect to the sidewalls of the duct at either end. Each bracket is L-shaped and features oblong holes and mounting holes. Each bracket connects to the fan mounting plate 54 via its corresponding mounting holes. The brackets connect to the cooling duct 52 and the VPX chassis via their corresponding oblong holes. Both brackets are CNC-machined from aluminum alloy plates.

[0078] The front wind deflector 58 is generally U-shaped and installed on the top of the front plug-in box 1. It is made of stainless steel plates that are bent and welded. It is mainly used to separate the plug-in space of the front plug-in box 1 from the exhaust space on its top to prevent hot air from flowing back into the front plug-in box 1. It is also used to discharge and guide hot air.

[0079] The front wind deflector 58 consists of a base plate and side panels on opposite sides of the base plate. The side panels are connected to the rear wind deflector 57 via screws. A sloped surface, connected to the rear wind deflector 57, is located at one end of the base plate to guide the exhaust of hot air. Multiple fixing clips are located at the other end of the base plate to hold cables. The sloped surface and fixing clips are located at opposite ends of the base plate. The fixing clips are screwed into the fixing clip mounting holes.

[0080] The rear air shield 57 is provided with a plurality of second ventilation holes, each corresponding to and connected to the cooling fans 51. The rear air shield 57 is made of aluminum alloy and is primarily used to block the gaps between the cooling fans 51 to prevent hot air from entering the plug-in space of the rear plug-in box 4.

[0081] Cold air enters from the ventilation holes at the bottom of the front plug-in box 1, becomes hot air through the front plug-in module 11, and is discharged from the ventilation holes at the top of the front plug-in box 1. Under the action of the heat dissipation fan 51, the hot air passes through the front wind deflector 58 and the rear wind deflector 57 in sequence and enters the heat dissipation fan 51. The hot air is then discharged out of the chassis through the heat dissipation duct 52, thereby achieving cooling and heat dissipation of the chassis plug-in module, improving product safety and reliability, improving product environmental adaptability, and improving product quality.

[0082] The VPX subrack also includes a lower windshield 6 located at the bottom of the front subrack 1 and the rear subrack 4. Made of aluminum alloy, it is screwed to the bottoms of the front and rear subracks 1 and 4 and features an adjustable backplane assembly recess.

[0083] A VPX subrack with efficient heat dissipation and precise installation. Figure 3 The exploded view shown in the figure shows the assembly process as follows:

[0084] 1. Install the air intake device 2 into the bottom of the front pluggable box 1.

[0085] 2. Install the adjustable back panel 38 assembly into the front plug-in box 1 from top to bottom. The positioning pin at the bottom of the adjustable back panel 38 assembly fits properly with the first mounting hole corresponding to the front plug-in box 1. At this time, the locker 33 of the adjustable back panel 38 assembly needs to be temporarily adjusted to the unlocked state.

[0086] 3. Select any front plug-in module 11 and insert it into the corresponding first upper guide slot 13 and first lower guide slot 14 of the front plug-in box 1. Observe and confirm that the pin holes of the front plug-in module 11 are aligned with the guide pins of the backplane 38. If not, adjust the backplane 38 in the opposite direction according to the deviation of the guide pins of the backplane 38. After the guide pins of the backplane 38 are aligned with the pin holes of the front plug-in module 11, use the puller provided with the front plug-in module 11 to firmly insert the front plug-in module 11 into the connector of the backplane 38. Then, install the remaining front plug-in modules 11 in this manner. After all front plug-in modules 11 are installed, tighten the locking strips provided with each front plug-in module 11 in turn. After confirming that the installation position and locking status of each front plug-in module 11 are correct, tighten the lock 33. At this point, the backplane 38 installation position has been adjusted to the optimal state and locked. Release and remove all front plug-in modules 11. After that, all front plug-in modules 11 can be inserted and removed as needed.

[0087] 4. Install the assembly of the front plug-in box 1, the air intake device 2, the adjustable back panel 38 and the rear plug-in box 4 into the empty VPX chassis.

[0088] 5. Install the lower wind shield 6 on the bottom of the front plug-in box 1 and the rear plug-in box 4.

[0089] 6. Install the heat sink 5 on top of the front plug-in box 1 and the rear plug-in box 4, and then connect it to both sides of the VPX chassis using corresponding standard parts.

[0090] 7. Insert each front plug-in module 11 and rear plug-in module 41 into the corresponding slot and lock it.

[0091] The above detailed description of the VPX subrack provided by the present invention has been provided. This article uses specific examples to illustrate the structure and operating principles of the present invention. The above examples are intended only to facilitate understanding of the method and core concepts of the present invention. It should be noted that those skilled in the art will be able to make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the claims.

Claims

1. A VPX subrack, characterized by: The front plug-in box (1) comprises a front plug-in module (11) provided in the front plug-in box (1), an air inlet device (2) provided at the bottom of the front plug-in box (1), and a plurality of plug-in box ventilation holes (12) in communication with the air inlet device (2) provided at the bottom and top of the front plug-in box (1); An adjustable backplane assembly (3) is provided on the side end surface of the front plug-in box (1) and is connected to the front plug-in module (11); The rear plug-in box (4) is arranged on the end surface of the adjustable backplane assembly (3) facing away from the front plug-in box (1); a rear plug-in module (41) is arranged in the rear plug-in box (4); A heat dissipation device (5) is provided on the top of the front plug-in box (1) and the rear plug-in box (4); The adjustable backplane assembly (3) comprises a carrying frame (31), an adjustment frame (32) arranged on one end surface of the carrying frame (31) and slidably connected to the carrying frame (31), a locker (33) and a transmission belt (34) arranged on opposite end surfaces of the adjustment frame (32), a fixed pulley (35) arranged on the adjustment frame (32) and connected to the transmission belt (34), an adjuster (36) and a driver (37) arranged on the top of the adjustment frame (32), and a backplane (38) arranged on the carrying frame (31) and passing through the adjustment frame (32) and connected to the front plug-in module (11); the transmission belt (34) is arranged between the carrying frame (31) and the adjustment frame (32); A first guide groove (311) is provided on two upper and lower opposite side frames of the carrying frame (31); a first guide rail (321) corresponding to the first guide groove (311) is provided on two upper and lower opposite side frames of the adjustment frame (32); the carrying frame (31) and the adjustment frame (32) are slidably connected via the first guide groove (311) and the first guide rail (321); The air intake device (2) comprises a fan bracket (21) arranged at the bottom of the front plug-in box (1); a plurality of air intake fans (22) are arranged on the fan bracket (21).

2. The VPX subrack according to claim 1, characterized in that: The front plug-in box (1) is provided with a first upper guide groove (13) and a first lower guide groove (14) for plugging and unplugging guidance and locking of the front plug-in module (11); the first upper guide groove (13) and the first lower guide groove (14) are provided in a one-to-one correspondence.

3. The VPX subrack according to claim 2, characterized in that: The front plug-in box (1) is provided with a notch (15) for facilitating the pushing and pulling of the front plug-in module (11), as well as a plurality of first mounting holes.

4. The VPX subrack according to claim 1, wherein: A second upper guide groove (42) and a second lower guide groove (43) for guiding the insertion and removal of the rear plug-in module (41) are provided in the rear plug-in box (4); the second upper guide groove (42) and the second lower guide groove (43) are provided in a one-to-one correspondence.

5. The VPX subrack according to claim 4, characterized in that: Two opposite sides of the top of the rear plug-in box (4) are respectively provided with a slope (44) and an arc-shaped groove (45) for ventilation and diversion; and a plurality of second mounting holes are provided on the peripheral box wall of the rear plug-in box (4).

6. The VPX subrack according to claim 1, characterized in that: The heat dissipation device (5) comprises a heat dissipation fan (51), a heat dissipation duct (52), and a shielded ventilation window (53). The heat dissipation duct (52) is arranged at the air outlet end of the heat dissipation fan (51), and the heat dissipation duct (52) is connected to the shielded ventilation window (53). A fan mounting plate (54) is arranged between the heat dissipation fan (51) and the heat dissipation duct (52). A heat dissipation left bracket (55) and a heat dissipation right bracket (56) are respectively arranged at both ends of the fan mounting plate (54) in the longitudinal direction. A rear wind shield (57) and a front wind shield guide plate (58) are respectively arranged at the air inlet end of the heat dissipation fan (51); the front wind shield guide plate (58) is installed on the top of the front plug-in box (1), and the heat dissipation duct (52) is installed on the top of the rear plug-in box (4).

7. The VPX subrack according to claim 6, characterized in that: The heat dissipation device (5) comprises a plurality of heat dissipation fans (51) arranged in parallel, and the heat dissipation air ducts (52) are arranged in a one-to-one correspondence with the plurality of heat dissipation fans (51).

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