CN113918399A - Computer mainboard firmware function test device - Google Patents
Computer mainboard firmware function test device Download PDFInfo
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- CN113918399A CN113918399A CN202111474941.5A CN202111474941A CN113918399A CN 113918399 A CN113918399 A CN 113918399A CN 202111474941 A CN202111474941 A CN 202111474941A CN 113918399 A CN113918399 A CN 113918399A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
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Abstract
The invention relates to a computer mainboard firmware function testing device, which belongs to the technical field of mainboard testing and solves the problems that in the existing computer mainboard testing technology, a computer mainboard is burnt due to the generation of a large amount of heat, the running environment of the computer mainboard in a computer cannot be simulated, the test data is deviated, and the high-low temperature resistance of the computer mainboard cannot be tested; according to the scheme, the clamping device is used for sealing and clamping the CPU for testing, the clamping device comprises a clamping mechanism used for clamping the CPU for testing and a heat dissipation mechanism used for performing heat dissipation treatment on the CPU for testing, the heat dissipation mechanism dissipates heat of the circuit main board when the circuit main board and the CPU for testing are tested, the phenomenon that the circuit main board is burnt due to overhigh heat and the running environment of the computer main board in a computer is simulated is avoided, meanwhile, the heat dissipation efficiency of the heat dissipation mechanism is controllable, high-temperature and low-temperature environments can be simulated, and the high-temperature and low-temperature resistance of the computer main board is tested.
Description
Technical Field
The invention relates to the technical field of mainboard testing, in particular to a computer mainboard firmware function testing device.
Background
When testing the operation data of the computer mainboard, generally, a CPU is inserted into the computer mainboard, the testing system is connected to the computer mainboard, the power supply is started, the computer mainboard and the CPU start to perform the testing operation, the testing system records the data of the computer mainboard and the CPU during the matching operation, and the operation data is used to obtain the key performance parameters of the computer mainboard, such as the operation stability, the matching performance with the CPU, and the like, however, in the prior art, the following disadvantages also exist: 1. during the long-time test operation process of the computer mainboard and the CPU, a large amount of heat can be generated, and the computer mainboard and the CPU can be burnt due to overhigh heat; 2. the operating environment of a computer mainboard in a computer cannot be simulated, and the obtained data has a certain deviation range with the real use; 3. the running conditions of the computer mainboard and the CPU in high-temperature and low-temperature environments cannot be simulated, and high-temperature and low-temperature resistance tests are carried out on the computer mainboard; therefore, the invention provides a computer mainboard firmware function testing device.
Disclosure of Invention
In order to solve the above mentioned problems in the background art, the present invention provides a device for testing the function of the firmware of the computer motherboard.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.
A computer mainboard firmware function testing device comprises a chassis, wherein a supporting device, a traction device, a clamping device, a testing system and a testing CPU are mounted on the chassis, the supporting device is used for positioning and clamping a computer mainboard to be tested, the traction device is used for drawing the clamping device to move in a three-dimensional coordinate system, the clamping device is used for clamping the testing CPU and drawing the testing CPU to move into a CPU groove on the computer mainboard, the clamping device is also used for performing heat dissipation treatment on the testing CPU in the testing operation process of the computer mainboard, and the testing system is used for collecting data in the testing operation process of the computer mainboard;
and a sealing ferrule is sleeved outside the CPU for testing.
Furthermore, the clamping device comprises a clamping mechanism and a heat dissipation mechanism, the clamping mechanism is used for clamping the CPU for testing, and the heat dissipation mechanism is used for carrying out heat dissipation treatment on the CPU for testing in the test operation process of the computer mainboard;
the clamping mechanism comprises a shell group connected with the traction device and a clamping component arranged on the shell group;
when the CPU for testing is positioned in the CPU groove of the computer mainboard, the upper end face of the CPU for testing is a heat dissipation surface, the heat dissipation surface is provided with a heat dissipation layer made of a heat conduction material, the heat dissipation mechanism comprises a storage component, an output component and an input component, a water-cooling medium is stored in the storage component, the input component is used for providing the water-cooling medium for the heat dissipation layer of the CPU for testing, and the output component is used for pumping the water-cooling medium on the heat dissipation layer of the CPU for testing.
Furthermore, the outer shell group comprises an upper cylinder shell connected with the traction device, the upper end of the upper cylinder shell is closed, the lower end of the upper cylinder shell is opened, and a lower cylinder shell in a cylindrical cylinder shell structure is vertically arranged on the upper cylinder shell;
the upper end and the lower end of the lower cylinder shell are open, a rotating ring is coaxially sleeved outside the lower cylinder shell through a bearing, a transfer step coaxially extends from the upper end surface of the rotating ring, a fixing ring is coaxially arranged at the lower opening end of the lower cylinder shell, an installation shell is coaxially arranged at the lower end surface of the fixing ring, and the upper end and the lower end of the installation shell are open;
the clamping component comprises a clamping assembly and a driving assembly, wherein the clamping assembly is installed in the installation shell and used for clamping the CPU for testing, and the driving assembly is arranged on the upper barrel shell and used for providing power for the operation of the clamping assembly.
Furthermore, the inner cavity of the mounting shell is rectangular, the cavity wall of the inner cavity of the mounting shell is horizontally provided with four groups of guide grooves, two adjacent groups of guide grooves are communicated with each other, and the four groups of guide grooves jointly form a square mounting area;
the clamping assembly comprises four groups of clamping components arranged on the wall of the mounting shell, and the four groups of clamping components correspond to the wall of the mounting shell;
the clamping component comprises a clamping screw rod arranged in the guide groove, and the axial direction of the clamping screw rod is parallel to the guide direction of the guide groove;
the clamping component also comprises a clamping block horizontally positioned in the mounting area, an included angle is formed between the clamping block and the clamping screw rod, one end of the clamping block along the extending direction of the clamping block is provided with a connecting lug, the other end of the clamping block is a contact end, the connecting lug is in threaded connection with the clamping screw rod, and the connecting lug and the guide groove form sliding guide fit;
the clamping part also comprises a rotating shaft vertically arranged on the mounting shell, the top end of the rotating shaft is positioned between the mounting shell and the rotating ring, the bottom end of the rotating shaft extends into the guide groove, and a worm gear rod piece for realizing power connection between the bottom end of the rotating shaft and the input end of the clamping screw rod is arranged between the bottom end of the rotating shaft and the input end of the clamping screw rod;
the surface of the clamping block facing the vertical center line of the mounting shell is a clamping surface, in two adjacent groups of clamping components, the contact end of the clamping block in one group of clamping components is in contact with the clamping surface of the clamping block in the other group of clamping components, the clamping surfaces of the clamping blocks in the four groups of clamping components jointly form a square clamping area, and when the clamping screw rods in the four groups of clamping components simultaneously rotate around the self axial direction, the square shape of the clamping area is kept to change.
Furthermore, the driving assembly comprises a supporting frame arranged on the side surface of the upper cylinder shell, a transmission shaft is vertically arranged on the supporting frame, the top end of the transmission shaft is in power connection with a clamping motor, and a power transmission piece for power connection between the bottom end of the transmission shaft and the transmission step is arranged between the bottom end of the transmission shaft and the transmission step;
the lower end face of the rotating ring is coaxially provided with a ring groove, the groove wall of the ring groove is coaxially provided with an inner ring gear, and the top end of the rotating shaft is positioned in the ring groove and is provided with a gear meshed with the inner ring gear.
Further, the storage component comprises a cooling component, a water tank and water pumps, two groups of water pumps are arranged and respectively comprise a water pump a and a water pump b, and water cooling media are stored in the water tank;
the water inlet end of the water pump a is connected with the connecting pipe a, the water outlet end of the water pump a is connected with the water inlet end of the cooling member, the water outlet end of the cooling member is connected with the water tank, the water inlet end of the water pump b is connected with the water tank, and the water outlet end of the water pump b is connected with the connecting pipe b.
Furthermore, the clamping block is hollow inside, the clamping surface is provided with a spray hole, and the upper end surface is provided with a connecting nozzle;
the input component comprises an input pipe b in an annular pipeline structure, an input pipe a used for communicating the input pipe b and the connecting pipe b is arranged between the input pipe b and the connecting pipe b, an input pipe c used for communicating the input pipe b and the connecting nozzle is arranged between the input pipe b and the connecting nozzle, and four groups of the input pipes c are correspondingly arranged.
Further, the output component comprises a suction component and a negative pressure component, the negative pressure component is used for absorbing the bottom of the suction component on the heat dissipation layer of the CPU for testing in a negative pressure mode, and the suction component is used for sucking the water cooling medium covering the heat dissipation layer of the CPU for testing back to the water tank.
Furthermore, the suction assembly comprises a connecting body, the connecting body is installed in the lower cylinder shell through a lifting component, the vertical center line of the connecting body is overlapped with the center line of the lower cylinder shell, and the lifting component is used for driving the connecting body to displace along the vertical direction;
the lower end surface of the connecting body is provided with a mounting groove, the upper end surface of the connecting body is provided with a through hole communicated with the mounting groove, and the side surface of the connecting body is provided with a joint communicated with the mounting groove;
the suction assembly further comprises a suction pipe which is vertically arranged, the suction pipe comprises an outer pipe and an inner pipe, the top end of the outer pipe is coaxially arranged in the mounting groove, the bottom end of the outer pipe is provided with an outer sucker, the inner pipe is coaxially positioned in the outer pipe, the top end of the inner pipe penetrates through the through hole and is positioned above the connecting body, the bottom end of the inner pipe is provided with an inner sucker, the inner sucker is positioned in the outer sucker, the outer edges of the inner sucker and the outer sucker are connected, and the inner pipe and the through hole are in sealing fit;
the suction area that the region that the inner wall of outer tube, the outer wall of inner tube, the inner wall of outer sucking disc, the outer wall of interior sucking disc constitute jointly is the suction area of suction tube, and the suction hole of a plurality of groups and suction area switch-on is seted up along self circumferencial direction array to the outer wall of outer sucking disc, is provided with the negative pressure pipe that is used for both to communicate between the top of inner tube and the negative pressure subassembly, is provided with the output tube that is used for both to communicate between joint and the connecting pipe a.
Furthermore, the negative pressure assembly comprises a motor frame arranged in the lower barrel shell, and a through linear screw rod stepping motor is vertically arranged on the motor frame;
the motor frame is also vertically provided with a pump shell, one end of the pump shell, facing the through type linear screw rod stepping motor, is open, the other end of the pump shell is closed, a negative pressure nozzle is arranged on the pump shell, the negative pressure nozzle is communicated with a negative pressure pipe, a piston is arranged in the pump shell in a sliding mode, and the piston is connected with the output end of the through type linear screw rod stepping motor.
Compared with the prior art, the invention has the beneficial effects that:
1. the heat generated by the operation of the computer mainboard and the CPU for testing is radiated, so that the computer mainboard and the CPU for testing can be prevented from being burnt due to overhigh heat; 2. the operation of a computer mainboard in a computer can be simulated, so that the test data is more accurate; 3. the clamping device can control the heat dissipation efficiency of the CPU for testing, so that the operation data of the computer mainboard in high-temperature and low-temperature environments can be simulated, and the optimal operation temperature range of the computer mainboard and the operation stability of the computer mainboard are obtained; 4. the heat dissipation performance of the water-cooling medium on the CPU for testing can be obtained reversely, and the chemical composition of the optimal water-cooling medium is tested.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the supporting apparatus, the testing system, and the testing CPU according to the present invention;
FIG. 3 is a schematic diagram of a test CPU according to the present invention;
FIG. 4 is a schematic view of the supporting apparatus of the present invention;
FIG. 5 is a schematic structural diagram of the positioning mechanism of the present invention;
FIG. 6 is a schematic view of the engagement of the pulling device and the holding device of the present invention;
FIG. 7 is a schematic structural view of the draft gear of the present invention;
FIG. 8 is a schematic view of the engagement of the clamping device of the present invention;
FIG. 9 is a schematic structural view of a storage member according to the present invention;
FIG. 10 is a schematic view of the clamping mechanism of the present invention;
FIG. 11 is a first schematic view of the structure of the housing set of the present invention;
FIG. 12 is a second schematic structural view of the housing set of the present invention;
FIG. 13 is a third schematic structural view of a housing set of the present invention;
FIG. 14 is a schematic view of the input member, the output member, and the clamping member of the present invention;
FIG. 15 is a schematic structural view of a drive assembly of the present invention;
FIG. 16 is a schematic view of the clamping assembly and the mounting housing of the present invention;
FIG. 17 is a schematic view of a clamping assembly of the present invention;
FIG. 18 is a schematic structural view of an input member of the present invention;
FIG. 19 is a cross-sectional view of a clamp block of the present invention;
FIG. 20 is a schematic structural view of an output member of the present invention;
FIG. 21 is a schematic view of the construction of the lifting member and the connecting body of the present invention;
FIG. 22 is a cross-sectional view of a suction tube and connector of the present invention;
fig. 23 is a schematic structural view of the negative pressure assembly of the present invention.
The reference numbers in the drawings are:
100. a chassis; 200. a supporting device; 201. a support platform; 202. positioning a screw rod; 203. positioning the guide rod; 204. positioning a motor; 205. positioning seats; 206. a positioning claw;
300. a traction device; 310. an X-axis mechanism; 320. a Z-axis mechanism; 330. a Y-axis mechanism;
400. a clamping device; 410. a storage member; 411. a water tank; 412. a water pump a; 413. a water pump b; 414. a connecting pipe a; 415. a connecting pipe b; 416. a cooling member;
420. a housing set; 421. an upper cartridge shell; 422. a lower cylinder shell; 4221. a fixing ring; 423. rotating the ring; 4231. a transfer step; 424. mounting a shell; 425. a protective housing;
430. a clamping member; 431. a clamping motor; 432. a transmission shaft; 433. a power transmission member; 434. an inner gear ring; 435. a gear; 436. a rotating shaft; 437. a worm gear rod; 438. clamping a screw rod; 439. a clamping block; 4391. a connecting lug; 4392. a connecting nozzle; 4393. spraying a hole;
440. an output member; 441. a lifting screw rod; 442. a lifting guide rod; 443. a lifting motor; 444. a linker; 445. an outer tube; 4451. an outer sucker; 4452. an inner tube; 4453. an inner sucker; 446. a negative pressure tube; 447. an output pipe; 448. a pump housing; 4481. a piston; 449. a through linear screw rod stepping motor;
450. an input member; 451. an input pipe a; 452. an input pipe b; 453. an input pipe c;
500. testing the system; 600. testing the CPU; 601. and sealing the ferrule.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1, a computer motherboard firmware function testing apparatus includes a chassis 100, a supporting device 200, a traction device 300, a clamping device 400, a testing system 500, and a testing CPU600 are installed on the chassis 100, wherein the supporting device 200 is used to position and clamp a computer motherboard to be tested, the traction device 300 is used to pull the clamping device 400 to move in a three-dimensional coordinate system, the clamping device 400 is used to clamp the testing CPU600 and pull it to move into a CPU slot on the computer motherboard, the clamping device 400 is also used to perform heat dissipation processing on the testing CPU600 during the testing operation of the computer motherboard, and the testing system 500 is used to collect data during the testing operation of the computer motherboard.
The test CPU600 has the same structure as a common CPU and is in a square shape, and a sealing ferrule 601 is sleeved outside the test CPU 600.
The during operation, at first, place the computer mainboard that awaits measuring on bearing device 200 bearing platform 201, then, positioning mechanism operation in the bearing device 200 fixes a position the computer mainboard, then, draw gear 300 pulls clamping device 400 to remove to test CPU600 position department, clamping device 400 carries out the centre gripping to test CPU600, then, draw gear 300 is through pulling clamping device 400, and then make test CPU600 remove to the CPU inslot on the computer mainboard, then, be connected test system 500 and computer mainboard: inserting a board card, a USB plug and the like into corresponding interfaces on a mainboard, collecting data of the computer mainboard during test operation through a test system 500, and obtaining test data such as the operation stability of the computer mainboard through the data;
in the process that the clamping device 400 clamps the test CPU600, the clamping device 400 is in clamping contact with the sealing ring 601, so that the clamping device 400 is in sealing fit with the test CPU 600;
in the operation process of the computer mainboard, a large amount of heat can be generated at the position of the CPU600 for testing, the clamping device 400 adopts a water-cooling heat dissipation mode to dissipate the heat of the CPU600 for testing, on one hand, the overhigh heat is prevented, so that the computer mainboard and the CPU600 for testing are burnt, on the other hand, the heat of the CPU600 for testing is dissipated, the operation of the computer mainboard in a computer can be simulated, so that the test data are more accurate, on the one hand, the heat dissipation efficiency of the clamping device 400 to the CPU600 for testing is controllable, the operation data of the computer mainboard in high-temperature and low-temperature environments can be simulated, the optimal operation temperature range of the computer mainboard and the operation stability of the computer mainboard can be obtained, on the other hand, the heat dissipation performance of the water-cooling medium to the CPU600 for testing can be obtained reversely, and the chemical components of the optimal water-cooling medium can be tested;
in the above process, the test system 500 is implemented in the prior art, and is not described again.
As shown in fig. 6-7, the traction device 300 includes an X-axis mechanism 310, a Z-axis mechanism 320, and a Y-axis mechanism 330.
The X-axis mechanism 310 includes an X-axis lead screw and an X-axis guide rod horizontally mounted on the bottom frame 100 and parallel to each other, an input end of the X-axis lead screw is power connected with an X-axis motor, a connecting seat a is mounted on an external thread of the X-axis lead screw, the connecting seat a is also slidably connected with the X-axis guide rod, and a guide direction of the X-axis guide rod is an X-axis.
The process of the traction device 300 drawing the clamping device 400 to move in the three-dimensional coordinate system specifically includes:
the X-axis motor, the Y-axis motor and the Z-axis motor are matched to pull the connecting seat c to move in a three-dimensional coordinate system formed by the X-axis, the Y-axis and the Z-axis, the clamping device 400 is connected with the connecting seat c, and the connecting seat c moves to pull the clamping device 400 to move synchronously, so that the clamping device 400 can be pulled by the pulling device 300 to move in the three-dimensional coordinate system.
As shown in fig. 4-5, the supporting device 200 includes a supporting platform 201 horizontally installed on the bottom frame 100 and a positioning mechanism installed on the supporting platform 201 for positioning the computer motherboard.
Specifically, as shown in fig. 5, the positioning mechanism includes a positioning member, the positioning member includes a positioning screw 202 and a positioning guide rod 203 installed at the bottom of the supporting platform 201, axial directions of the positioning screw 202 and the positioning guide rod are both parallel to the Y axis, the positioning screw 202 is divided into two sets of threaded sections and a smooth section located between the two sets of threaded sections along the self axial direction, a positioning seat 205 is installed on an external thread of each set of threaded sections, the positioning seat 205 is also connected with the positioning guide rod 203 in a sliding manner, when the positioning screw 202 rotates around the self axial direction, the two sets of positioning seats 205 move close to or away from each other, and the smooth section is connected with a positioning motor 204 for driving the positioning screw 202 to rotate.
The top of the supporting platform 201 is provided with an avoiding hole with the guiding direction parallel to the Y axis, the top of the positioning seat 205 vertically extends upwards to form a positioning claw 206, and the top of the positioning claw 206 penetrates through the avoiding hole and is located above the supporting platform 201.
Two groups of positioning components are arranged along the X-axis direction.
As shown in fig. 4, the top of the supporting platform 201 is further provided with a positioning convex strip.
The positioning process of the computer mainboard specifically comprises the following steps:
firstly, a computer mainboard is placed on a supporting platform 201 and is positioned between four groups of positioning claws 206, the side edge of the computer mainboard is contacted with a positioning convex strip, then, a positioning motor 204 operates to drive a positioning screw rod 202 to rotate, and then two groups of positioning claws 206 in each group of positioning members move close to each other to position and clamp the computer mainboard;
after the test of the computer motherboard is finished, the positioning motor 204 runs in the direction, so that the two groups of positioning claws 206 in each group of positioning members move away from each other, and the computer motherboard can be loosened.
As shown in fig. 8 to 23, the clamping device 400 includes a clamping mechanism for clamping the CPU600 for testing and a heat dissipation mechanism for dissipating heat of the CPU600 for testing during the test operation of the computer motherboard.
As shown in fig. 10 and 14, the clamping mechanism includes a housing set 420 connected with the connection socket c and a clamping member 430 mounted on the housing set 420.
As shown in fig. 11 to 13, the outer shell set 420 includes an upper shell 421 connected to the connecting seat c, the upper end of the upper shell 421 is closed, the lower end is opened, and a lower shell 422 having a cylindrical shell structure is vertically installed, and the upper end and the lower end of the lower shell 422 are opened.
The outer part of the lower cylinder shell 422 is coaxially sleeved with a rotary ring 423 through a bearing, and the upper end surface of the rotary ring 423 coaxially extends with a transmission step 4231.
The lower opening end of the lower cylinder shell 422 is coaxially provided with a fixing ring 4221, the lower end face of the fixing ring 4221 is coaxially provided with a mounting shell 424, and the upper end and the lower end of the mounting shell 424 are opened.
As shown in fig. 14 to 16, the clamping member 430 includes a clamping assembly installed in the mounting case 424 for clamping the test CPU600, and a driving assembly provided on the upper cartridge case 421 for powering the operation of the clamping assembly.
As shown in fig. 16-17 and 19, the inner cavity of the mounting shell 424 is rectangular, the cavity wall of the inner cavity of the mounting shell 424 is horizontally provided with four sets of guide grooves, two adjacent sets of guide grooves are communicated with each other, and the four sets of guide grooves jointly form a square mounting area.
The clamping assembly comprises four clamping components arranged on the cavity wall of the mounting shell 424, and the four clamping components are arranged corresponding to the cavity wall of the mounting shell 424.
The clamping member includes a clamping screw 438 installed in the guide groove, and an axial direction of the clamping screw 438 is parallel to a guide direction of the guide groove.
The clamping part further comprises a clamping block 439 horizontally located in the installation area, an included angle is formed between the clamping block 439 and the clamping screw rod 438, one end of the clamping block 439 in the extending direction of the clamping block 439 is provided with a connecting lug 4391, the other end of the clamping block is a contact end, the connecting lug 4391 is in threaded connection with the clamping screw rod 438 and is in sliding guide fit with the guide groove, and when the clamping screw rod 438 rotates, the clamping block 439 is pulled to displace along the guide direction of the guide groove.
The clamping part further comprises a rotating shaft 436 vertically installed on the installation shell 424, the top end of the rotating shaft 436 is located between the installation shell 424 and the rotary ring 423, the bottom end of the rotating shaft 436 extends into the guide groove, a worm gear member 437 used for achieving power connection between the bottom end of the rotating shaft 436 and the input end of the clamping screw rod 438 is arranged between the bottom end of the rotating shaft 436 and the input end of the clamping screw rod 438, and the worm gear member 437 has self-locking performance and can be achieved in the prior art.
The surface of the clamping block 439 facing the vertical center line of the mounting shell 424 is a clamping surface, in two adjacent groups of clamping components, the contact end of the clamping block 439 in one group of clamping components is in contact with the clamping surface of the clamping block 439 in the other group of clamping components, the clamping surfaces of the clamping blocks 439 in the four groups of clamping components jointly form a square clamping area, and when the clamping screw rods 438 in the four groups of clamping components simultaneously rotate around the axial direction of the clamping screw rods, the area of the square clamping area is changed when the square clamping area is kept.
The process that the centre gripping subassembly carries out the centre gripping to testing CPU600 specifically shows:
the driving assembly drives the rotating shafts 436 in the four groups of clamping components to simultaneously rotate around the self axial direction, and the worm gear member 437 pulls the clamping screw rods 438 in the four groups of clamping components to simultaneously rotate around the self axial direction, so that the area of the clamping area is kept in a square shape and changed;
when the area of the clamping area is reduced, the clamping surface of the clamping block 439 contacts with the sealing ferrule 601 outside the test CPU600 in the clamping area, namely, the test CPU600 is clamped, and due to the existence of the sealing ferrule 601, a sealing fit is formed between the clamping surface of the clamping block 439 and the sealing ferrule 601, preferably, in order to improve the sealing performance of the sealing fit, the clamping surface of the clamping block 439 is provided with a sealing layer, for example, a sealing layer made of rubber material;
as the grip area increases, the grip surface of the grip block 439 moves out of contact with the seal ring 601, i.e., the grip on the test CPU600 is released.
In the above process, since the worm 437 is self-locking, when the holding screw 438 stops rotating, the holding block 439 stops moving and remains stationary.
As shown in fig. 15 to 16, the driving assembly includes a support frame installed on the side of the upper casing 421, a transmission shaft 432 is vertically installed on the support frame, the top end of the transmission shaft 432 is dynamically connected with the clamping motor 431, and the bottom end of the transmission shaft 432 is dynamically connected with the transmission step 4231 through a power transmission member 433, so that the clamping motor 431 operates to drive the transmission step 4231 and the rotary ring 423 to rotate around its own axial direction through the transmission shaft 432 and the power transmission member 433.
The lower end face of the swivel 423 is coaxially provided with a ring groove, and the groove wall of the ring groove is coaxially provided with an inner ring gear 434.
The top end of the rotating shaft 436 is located in the ring groove and is provided with a gear 435 engaged with the ring gear 434.
The drive assembly is the process that the centre gripping subassembly provided power, specifically does:
the clamping motor 431 operates to drive the transmission step 4231 and the rotary ring 423 to rotate axially around the clamping motor 431 through the transmission shaft 432 and the power transmission member 433, and the rotary ring 423 rotates to drive the rotary shaft 436 to rotate through the matching of the internal gear ring 434 and the gear 435.
In a preferred embodiment, as shown in fig. 14, the power transmission member 433 between the transmission shaft 432 and the transmission step 4231 is exposed to the air and easily enters dust, etc., and therefore, a protective cover 425 is provided outside the lower cylinder case 422, the top end of the protective cover 425 is connected to the upper cylinder case 421, the bottom end thereof is close to the upper end surface of the swivel 423, and an escape opening for escaping the transmission shaft 432 is provided outside the protective cover 425.
As shown in fig. 8 and 14, when the test CPU600 is located in the CPU slot of the computer motherboard, the upper end surface of the test CPU600 is a heat dissipation surface, and the heat dissipation surface is provided with a heat dissipation layer made of a heat conductive material.
The heat dissipation mechanism comprises a storage component 410, an output component 440 and an input component 450, wherein a water-cooling medium such as cooling water or cooling oil is stored in the storage component 410, the input component 450 is used for providing the water-cooling medium for the heat dissipation layer of the CPU600 for testing, the output component 440 is used for pumping the water-cooling medium on the heat dissipation layer of the CPU600 for testing, the input component 450 and the output component 440 are matched to form a circulating flow of the water-cooling medium, the heat dissipation layer of the input component 450 is continuously covered with a water-cooling medium film, the CPU600 for testing is dissipated through the water-cooling medium film, the water-cooling medium is more uniformly contacted with the heat dissipation layer of the CPU600 for testing, and the heat dissipation effect is better.
As shown in fig. 9, the storage member 410 includes a water tank 411 and a water pump, and the water pump is provided with two sets: water pumps a412 and b413, and a water tank 411 stores a water cooling medium.
Wherein, the water inlet end of the water pump a412 is connected with a connecting pipe a414, the water outlet end of the water pump a412 is connected with the water inlet end of the cooling member 416, and the water outlet end of the cooling member 416 is connected with the water tank 411; the cooling member 416 may be implemented using conventional cooling techniques, and will not be described in detail.
The water inlet end of the water pump b413 is connected with the water tank 411, and the water outlet end is connected with a connecting pipe b 415.
As shown in fig. 14 to 15 and 18 to 19, the holding block 439 is hollow inside, the holding face is provided with a nozzle 4393, and the upper end face is provided with a connecting mouth 4392.
The input member 450 includes an input tube b452 having an annular pipe structure, the input tube b452 is connected and communicated with the connection tube b415 through an input tube a451, the input tube b452 is connected and communicated with the connection nozzle 4392 through an input tube c453, and four sets of the input tubes c453 are correspondingly provided.
The process of the input member 450 providing the water cooling medium to the heat dissipation layer of the test CPU600 specifically includes:
the water pump b413 operates to suck the water-cooling medium in the water tank 411, and the water-cooling medium flows into the surface of the heat-dissipating layer of the test CPU600 through the connection pipe b415, the input pipe a451, the input pipe b452, the input pipe c453, the connection nozzle 4392, the hollow inner region of the holding block 439, and the injection hole 4393 in this order.
In a preferred embodiment, in the above process, the water-cooling medium finally flows into the surface of the heat dissipation layer of the test CPU600 along the clamping surface of the clamping block 439, which may cause a problem that the surface of the heat dissipation layer of the test CPU600 is not covered by a water-cooling medium film, or a problem that the part of the water-cooling medium film near the clamping block 439 is thick and the part of the water-cooling medium film far from the clamping block 439 is thin and has uneven heat dissipation, therefore, the spray holes 4393 are arranged obliquely, the distance between the spray holes 4393 and the clamping surface of the clamping block 439 increases from bottom to top in the vertical direction, when the water-cooling medium is showered down to the surface of the heat dissipation layer of the test CPU600 through the spray holes 4393, the water-cooling medium may form a parabolic track, and after the water-cooling medium falls to the surface of the heat dissipation layer, the water-cooling medium is diffused all around under the impact force, so that the surface of the heat dissipation layer of the test CPU600 is uniformly covered by a layer, and the heat dissipation is more uniform.
As shown in fig. 20, the output member 440 includes a suction unit for sucking a bottom portion of the suction unit to a heat dissipation layer of the test CPU600 in a negative pressure manner, and a negative pressure unit for sucking a water cooling medium covering the heat dissipation layer of the test CPU600 back into the water tank 411.
As shown in fig. 21-22, the suction assembly includes a connecting body 444, the connecting body 444 is mounted in the lower cartridge 422 by the lifting member and the vertical centerline of the connecting body 444 coincides with the centerline of the lower cartridge 422.
The lifting component is used for driving the connecting body 444 to displace along the vertical direction, specifically, as shown in fig. 21, the lifting component includes an installation frame installed in the lower cylinder shell 422, a lifting screw 441 and a lifting guide rod 442 are vertically installed on the installation frame, wherein the connecting body 444 is in threaded connection with the lifting screw 441 and is in sliding connection with the lifting guide rod 442, an input end of the lifting screw 441 is in power connection with a lifting motor 443, the lifting motor 443 operates to drive the lifting screw 441 to rotate, and then the connecting body 444 is pulled to displace along the vertical direction.
As shown in fig. 22, the connecting body 444 has a mounting groove on a lower end surface thereof, a through hole communicating with the mounting groove on an upper end surface thereof, and a joint communicating with the mounting groove on a side surface thereof.
The suction assembly further comprises a suction pipe which is vertically arranged and comprises an outer pipe 445 and an inner pipe 4452, wherein the top end of the outer pipe 445 is coaxially installed in the installation groove, and an outer suction disc 4451 is arranged at the bottom end of the outer pipe 445.
The inner tube 4452 is coaxially positioned in the outer tube 445, the top end of the inner tube 4452 penetrates through the through hole and is positioned above the connecting body 444, the bottom end of the inner tube 4452 is provided with an inner suction disc 4453, the inner suction disc 4453 is positioned in the outer suction disc 4451, the outer edges of the inner suction disc 4453 and the outer suction disc 4451 are connected, and the inner tube 4452 and the through hole are in sealing fit.
The area formed by the inner wall of the outer pipe 445, the outer wall of the inner pipe 4452, the inner wall of the outer suction disc 4451 and the outer wall of the inner suction disc 4453 is a suction area of the suction pipe, and a plurality of groups of suction holes communicated with the suction area are arrayed on the outer wall of the outer suction disc 4451 along the circumferential direction of the outer suction disc.
A negative pressure pipe 446 for communicating between the top end of the inner pipe 4452 and the negative pressure assembly is arranged between the top end of the inner pipe and the negative pressure assembly, and an output pipe 447 for communicating between the joint and the connecting pipe a414 is arranged between the joint and the connecting pipe a 414.
The process of the suction component sucking the water-cooling medium covering the heat dissipation layer of the CPU600 for testing back to the water tank 411 specifically includes:
the lifting component drives the connecting body 444 to vertically move downwards, and the connecting body 444 moves downwards to pull the suction pipe to coaxially move downwards until the inner suction disc 4453 is contacted with the heat dissipation layer of the CPU600 for testing;
then, the negative pressure assembly operates to make the inner sucker 4453 adsorbed on the heat dissipation layer of the test CPU 600;
next, the water pump a412 is operated to make the water-cooling medium on the heat dissipation layer of the test CPU600 flow into the water tank 411 after passing through the suction hole, the suction area of the suction pipe, the mounting groove, the joint, the outlet pipe 447, the connection pipe a414, and the cooling member 416 in this order.
As shown in fig. 20 and 23, the negative pressure assembly includes a motor frame installed in the lower casing 422, a through linear lead screw stepping motor 449 is vertically installed on the motor frame, the through linear lead screw stepping motor 449 is in the prior art, and its output motion is pure linear motion, i.e., the output shaft of the through linear lead screw stepping motor 449 only displaces along its own axial direction, and detailed descriptions of its specific structure are omitted here.
A pump shell 448 is also vertically arranged on the motor frame, one end of the pump shell 448, facing the through type linear screw rod stepping motor 449, is open, the other end is closed and is provided with a negative pressure nozzle, and the negative pressure nozzle is communicated with the negative pressure pipe 446.
A piston 4481 is arranged in the pump casing 448 in a sliding manner, and the piston 4481 is connected with the output end of the through type linear screw rod stepping motor 449.
The process of the negative pressure assembly making the inner sucker 4453 adsorbed on the heat dissipation layer of the test CPU600 specifically includes:
the penetrating linear screw stepping motor 449 operates the traction piston 4481 to displace in the pump housing 448, thereby sucking air in the inner tube 4452, forming a negative pressure at the inner suction disc 4453, and further absorbing the inner suction disc 4453 on the heat dissipation layer of the test CPU 600.
The working process of the scheme is specifically represented as follows:
the testing process comprises the following steps:
s1: placing a computer mainboard to be tested on the supporting platform 201, wherein the computer mainboard is positioned between the four groups of positioning claws 206, and the side edge of the computer mainboard is contacted with the positioning convex strips;
the positioning motor 204 operates to drive the positioning screw rod 202 to rotate, so that the two groups of positioning claws 206 in each group of positioning members move close to each other to position and clamp the computer mainboard;
s2: the traction device 300 operates, firstly, the clamping device 400 is dragged to move to the position right above the CPU600 for testing, and then the clamping device 400 is dragged to move vertically downwards, so that the CPU600 for testing is positioned in a clamping area formed by clamping surfaces of the clamping blocks 439 in the four groups of clamping components;
the clamping motor 431 operates to drive the transmission step 4231 and the rotary ring 423 to rotate around the self axial direction through the transmission shaft 432 and the power transmission member 433, the rotary ring 423 rotates to drive the rotary shafts 436 of the four groups of clamping components to rotate simultaneously through the matching of the inner gear ring 434 and the gear 435, the rotary shafts 436 rotate to pull the clamping screw rods 438 of the four groups of clamping components to rotate around the self axial direction through the worm gear member 437, so that the clamping area is kept in a square shape, the area is reduced, the clamping surface of the clamping block 439 is in contact with the sealing ferrule 601 outside the CPU600 for testing to clamp the CPU600 for testing, and due to the existence of the sealing ferrule 601, the clamping surface of the clamping block 439 is in sealing fit with the sealing ferrule 601;
the lifting component drives the connecting body 444 to vertically move downwards, the connecting body 444 moves downwards to pull the suction pipe to coaxially move downwards, the inner suction disc 4453 is made to be in contact with the heat dissipation layer of the CPU600 for testing, the penetrating type linear screw rod stepping motor 449 operates the pulling piston 4481 to displace in the pump shell 448, air in the inner pipe 4452 is sucked, negative pressure is formed at the position of the inner suction disc 4453, and the inner suction disc 4453 is further adsorbed on the heat dissipation layer of the CPU600 for testing;
s3: the traction device 300 operates, firstly, the clamping device 400 and the CPU600 for testing are dragged to move right above the CPU groove of the computer mainboard, and then the clamping device 400 and the CPU600 for testing are dragged to move downwards vertically, so that the CPU600 for testing is positioned in the CPU groove of the computer mainboard;
s4: connecting the test system 500 with a computer motherboard, for example, inserting a board card, a USB plug, etc. into a corresponding interface on the motherboard, collecting data of the computer motherboard during test operation through the test system 500, and obtaining test data such as operation stability of the computer motherboard through the data;
in the test operation process of the computer mainboard, the water pump b413 operates to pump the water-cooling medium in the water tank 411, so that the water-cooling medium sequentially passes through the connecting pipe b415, the input pipe a451, the input pipe b452, the input pipe c453, the connecting nozzle 4392, the inner hollow area of the clamping block 439 and the spray hole 4393 and flows into the surface of the heat dissipation layer of the test CPU600, and the spray hole 4393 is obliquely arranged, so that the water-cooling medium is in a parabolic track when being sprayed and dropped to the surface of the heat dissipation layer of the test CPU600 through the spray hole 4393, and the water-cooling medium is diffused to the periphery under the impact force after being dropped to the surface of the heat dissipation layer, so that the surface of the heat dissipation layer of the test CPU600 is uniformly covered with a layer of water-cooling medium, and the heat dissipation is more uniform;
meanwhile, the water pump a412 operates to enable the water-cooling medium on the heat dissipation layer of the CPU600 for test to sequentially pass through the suction hole, the suction area of the suction pipe, the mounting groove, the joint, the output pipe 447, the connecting pipe a414 and the cooling member 416 and then flow into the water tank 411, so as to form the circulating flow of the water-cooling medium;
in the test process: 1. the heat generated by the operation of the computer mainboard and the test CPU600 is radiated, so that the computer mainboard and the test CPU600 can be prevented from being burnt due to overhigh heat; 2. the operation of a computer mainboard in a computer can be simulated, so that the test data is more accurate; 3. the clamping device 400 can control the heat dissipation efficiency of the CPU600 for testing, so that the operation data of the computer mainboard in high-temperature and low-temperature environments can be simulated, and the optimal operation temperature range of the computer mainboard and the operation stability of the computer mainboard are obtained; 4. it can be obtained in the reverse direction that the water cooling medium tests the heat dissipation performance of the CPU600 for testing, and the chemical composition of the optimal water cooling medium.
And (4) ending the process:
after the test is finished, the connection between the test system 500 and the computer mainboard is disconnected, the water pump b413 stops running, the water pump a412 continues running, and the water-cooling medium on the surface of the heat dissipation layer of the CPU600 for the test is pumped completely;
the traction device 300 pulls the test CPU600 back to the initial position of the test CPU600, the clamping motor 431 runs reversely to loosen the test CPU600, in the loosening process, the inner sucker 4453 is adsorbed on the heat dissipation layer of the test CPU600, so that the test CPU600 does not deviate, but stays still at the initial position, and if the inner sucker 4453 does not exist, the sealing ferrule 601 is clamped for a long time and then loosened, so that the test CPU600 slightly deviates;
the lifting component drives the connecting body 444 to vertically move upwards for resetting, and thus the resetting of the scheme is completed.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A computer mainboard firmware function testing device is characterized by comprising a chassis (100), wherein a supporting device (200), a traction device (300), a clamping device (400), a testing system (500) and a testing CPU (600) are mounted on the chassis (100), the supporting device (200) is used for positioning and clamping a computer mainboard to be tested, the traction device (300) is used for drawing the clamping device (400) to move in a three-dimensional coordinate system, the clamping device (400) is used for clamping the testing CPU (600) and drawing the testing CPU to move into a CPU groove on the computer mainboard, the clamping device (400) is also used for performing heat dissipation processing on the testing CPU (600) in the testing and running process of the computer mainboard, and the testing system (500) is used for collecting data during the testing and running of the computer mainboard;
the outer part of the CPU (600) for testing is sleeved with a sealing ferrule (601).
2. The device for testing the computer motherboard firmware function according to claim 1, wherein the clamping device (400) comprises a clamping mechanism and a heat dissipation mechanism, the clamping mechanism is used for clamping the test CPU (600), and the heat dissipation mechanism is used for performing heat dissipation processing on the test CPU (600) during the test operation of the computer motherboard;
the clamping mechanism comprises a shell group (420) connected with the traction device (300) and a clamping member (430) arranged on the shell group (420);
when the CPU (600) for testing is located in the CPU groove of the computer mainboard, the upper end face of the CPU (600) for testing is a heat dissipation surface, the heat dissipation surface is provided with a heat dissipation layer made of a heat conduction material, the heat dissipation mechanism comprises a storage component (410), an output component (440) and an input component (450), a water-cooling medium is stored in the storage component (410), the input component (450) is used for providing the water-cooling medium for the heat dissipation layer of the CPU (600) for testing, and the output component (440) is used for sucking the water-cooling medium on the heat dissipation layer of the CPU (600) for testing.
3. The computer motherboard firmware function testing device of claim 2, wherein the housing group (420) comprises an upper cylindrical shell (421) connected with the traction device (300), the upper end of the upper cylindrical shell (421) is closed, the lower end of the upper cylindrical shell is open, and a lower cylindrical shell (422) in a cylindrical shell structure is vertically installed;
the upper end and the lower end of the lower cylinder shell (422) are open, a rotating ring (423) is coaxially sleeved outside the lower cylinder shell (422) through a bearing, a transfer step (4231) coaxially extends from the upper end face of the rotating ring (423), a fixing ring (4221) is coaxially arranged at the lower opening end of the lower cylinder shell (422), a mounting shell (424) is coaxially arranged at the lower end face of the fixing ring (4221), and the upper end and the lower end of the mounting shell (424) are open;
the clamping component (430) comprises a clamping assembly which is arranged in the mounting shell (424) and is used for clamping the CPU (600) for test, and a driving assembly which is arranged on the upper barrel shell (421) and is used for providing power for the operation of the clamping assembly.
4. The device for testing the functions of the firmware of the computer mainboard of the claim 3, wherein the inner cavity of the installation shell (424) is rectangular, the cavity wall of the inner cavity of the installation shell (424) is horizontally provided with four groups of guide grooves, two adjacent groups of guide grooves are communicated with each other, and the four groups of guide grooves jointly form a square installation area;
the clamping assembly comprises four clamping components arranged on the cavity wall of the mounting shell (424), and the four clamping components are arranged corresponding to the cavity wall of the mounting shell (424);
the clamping component comprises a clamping screw rod (438) arranged in the guide groove, and the axial direction of the clamping screw rod (438) is parallel to the guide direction of the guide groove;
the clamping part further comprises a clamping block (439) horizontally positioned in the mounting area, the clamping block (439) and the clamping screw rod (438) are arranged in an included angle mode, one end of the clamping block (439) in the extending direction of the clamping block is provided with a connecting lug (4391), the other end of the clamping block is a contact end, the connecting lug (4391) is in threaded connection with the clamping screw rod (438), and the connecting lug (4391) and the guide groove form sliding guide fit;
the clamping component further comprises a rotating shaft (436) vertically installed on the installation shell (424), the top end of the rotating shaft (436) is located between the installation shell (424) and the rotary ring (423), the bottom end of the rotating shaft (436) extends into the guide groove, and a worm gear rod piece (437) used for realizing power connection between the bottom end of the rotating shaft (436) and the input end of the clamping screw rod (438) is arranged between the bottom end of the rotating shaft (436) and the input end of the clamping screw rod;
the surface of the clamping block (439) facing the vertical center line of the mounting shell (424) is a clamping surface, in two adjacent groups of clamping components, the contact end of the clamping block (439) in one group of clamping components is in contact with the clamping surface of the clamping block (439) in the other group of clamping components, the clamping surfaces of the clamping blocks (439) in the four groups of clamping components jointly form a square clamping area, and when the clamping screw rods (438) in the four groups of clamping components simultaneously rotate around the axial direction of the clamping screw rods, the area of the clamping area is changed while the square shape is kept.
5. The device for testing the functions of the computer mainboard firmware, according to claim 4, is characterized in that the driving assembly comprises a supporting frame arranged on the side surface of the upper cylinder shell (421), a transmission shaft (432) is vertically arranged on the supporting frame, the top end of the transmission shaft (432) is in power connection with a clamping motor (431), and a power transmission member (433) for power connection between the bottom end and the transmission step (4231) is arranged between the bottom end and the transmission step;
the lower end face of the rotating ring (423) is coaxially provided with a ring groove, the groove wall of the ring groove is coaxially provided with an inner ring gear (434), and the top end of the rotating shaft (436) is positioned in the ring groove and is provided with a gear (435) meshed with the inner ring gear (434).
6. The device for testing the function of the firmware of the computer motherboard according to claim 4 or 5, wherein the storage component (410) comprises a cooling component (416), a water tank (411) and a water pump, the water pump is provided with two groups, namely a water pump a (412) and a water pump b (413), and a water cooling medium is stored in the water tank (411);
the water inlet end of the water pump a (412) is connected with a connecting pipe a (414), the water outlet end of the water pump a (412) is connected with the water inlet end of the cooling member (416), the water outlet end of the cooling member (416) is connected with the water tank (411), the water inlet end of the water pump b (413) is connected with the water tank (411), and the water outlet end of the water pump b (415) is connected with the connecting pipe b.
7. The computer motherboard firmware function testing device as claimed in claim 6, wherein the clamping block (439) is hollow inside, the clamping face is provided with a spray hole (4393), and the upper end face is provided with a connecting nozzle (4392);
the input component (450) comprises an input pipe b (452) in an annular pipeline structure, an input pipe a (451) used for communicating the input pipe b (452) with the connecting pipe b (415) is arranged between the input pipe b (452) and the connecting pipe b (415), an input pipe c (453) used for communicating the input pipe b (452) with the connecting nozzle (4392) is arranged between the input pipe b (452) and the connecting nozzle, and four groups of the input pipes c (453) are correspondingly arranged.
8. The device for testing the computer motherboard firmware function as claimed in claim 7, wherein the output member (440) comprises a suction assembly and a negative pressure assembly, the negative pressure assembly is used for absorbing the bottom of the suction assembly on the heat dissipation layer of the test CPU (600) in a negative pressure manner, and the suction assembly is used for sucking the water cooling medium covering the heat dissipation layer of the test CPU (600) back to the water tank (411).
9. The computer motherboard firmware function testing device of claim 8, wherein the suction assembly comprises a connecting body (444), the connecting body (444) is installed in the lower cylinder shell (422) through a lifting component, and a vertical center line of the connecting body (444) is coincident with a center line of the lower cylinder shell (422), the lifting component is used for driving the connecting body (444) to displace along a vertical direction;
the lower end surface of the connecting body (444) is provided with a mounting groove, the upper end surface is provided with a through hole communicated with the mounting groove, and the side surface is provided with a joint communicated with the mounting groove;
the suction assembly further comprises a suction pipe which is vertically arranged, the suction pipe comprises an outer pipe (445) and an inner pipe (4452), the top end of the outer pipe (445) is coaxially installed in the installation groove, an outer suction cup (4451) is arranged at the bottom end of the outer pipe (445), the inner pipe (4452) is coaxially located in the outer pipe (445), the top end of the inner pipe (4452) penetrates through the through hole and is located above the connecting body (444), the bottom end of the inner pipe (4453) is provided with an inner suction cup (4453), the inner suction cup (4453) is located in the outer suction cup (4451) and is connected with the outer edge of the outer suction cup (4451), and the inner pipe (4452) and the through hole are in sealing fit;
the suction area of suction pipe is the area that the inner wall of outer tube (445), the outer wall of inner tube (4452), the inner wall of outer sucking disc (4451), the outer wall of interior sucking disc (4453) constitute jointly, and the outer wall of outer sucking disc (4451) is along self circumferencial direction array to be seted up a plurality of groups and is sucked the suction hole of district switch-on, is provided with negative pressure pipe (446) that are used for both to communicate between the top of inner tube (4452) and the negative pressure subassembly, is provided with between joint and connecting pipe a (414) and is used for output tube (447) that both communicate.
10. The computer motherboard firmware function testing device of claim 9, wherein the negative pressure component comprises a motor frame installed in the lower barrel shell (422), and a through linear screw stepping motor (449) is vertically installed on the motor frame;
still vertically install pump case (448) on the motor frame, pump case (448) are closed and are provided with the negative pressure mouth towards one end opening, the other end of penetrating formula straight line lead screw step motor (449), and the negative pressure mouth communicates with negative pressure pipe (446), and it is provided with piston (4481) to slide in pump case (448), and piston (4481) is connected with the output of penetrating formula straight line lead screw step motor (449).
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