CN108519534A - Electrostatic discharge testing system - Google Patents
Electrostatic discharge testing system Download PDFInfo
- Publication number
- CN108519534A CN108519534A CN201810537991.5A CN201810537991A CN108519534A CN 108519534 A CN108519534 A CN 108519534A CN 201810537991 A CN201810537991 A CN 201810537991A CN 108519534 A CN108519534 A CN 108519534A
- Authority
- CN
- China
- Prior art keywords
- vertical
- longitudinal
- sliding block
- synchronous belt
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 80
- 230000001360 synchronised effect Effects 0.000 claims abstract description 96
- 230000007246 mechanism Effects 0.000 claims abstract description 83
- 230000003068 static effect Effects 0.000 claims abstract description 39
- 230000017525 heat dissipation Effects 0.000 claims description 19
- 239000007787 solid Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 27
- 230000006698 induction Effects 0.000 abstract description 7
- 230000033001 locomotion Effects 0.000 description 17
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000003252 repetitive effect Effects 0.000 description 6
- 230000003139 buffering effect Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a kind of electrostatic discharge testing systems, it includes longitudinal adjustment apparatus, lateral adjustment device, vertical adjustment device and the fixing device for installing static gun, vertical adjustment device includes vertical stepper motor, vertical synchronous belt mechanism, vertical rails and vertical sliding block, and driving pulley is connect with the electric machine shaft driving of vertical stepper motor.Vertical sliding block is fixed on the synchronous belt of vertical synchronous belt mechanism and is slidedly arranged on vertical rails, and fixing device is fixed on vertical sliding block.Vertical adjustment device realizes linear advancement by vertical synchronous belt mechanism and vertical sliding block, when testing the antistatic effect of electronic product by way of atmospherical discharges, in a cycle of electric discharge, the electric power storage of static gun, it can ensure that static gun leaves the electrostatic induction region of electronic product in time, cause to damage electronic product to avoid the test point to electronic product from carrying out the electric discharge of moment continuous quadratic, and then improves the measuring accuracy of electronic product antistatic effect.
Description
Technical field
The present invention relates to the electrostatic discharge testing field in EMC test technology, more particularly to a kind of static discharge is surveyed
Test system.
Background technology
Electromagnetic compatibility, which refers to equipment or system, can work normally in its electromagnetic compatible environment and not to any in the environment
Things constitutes the ability for the electromagnetic disturbance that cannot be born.It is divided into electric/electronic device to the characteristic of external emission electromagnetic disturbance and
Electric/electronic device resists the ability of external disturbance, and what electrostatic test was verified is the energy that electric/electronic device resists external disturbance
Power；Static discharge is the electric charge transfer between the object of two different potentials, this energy generated is likely to result in electric and electronic and sets
The even physical permanent damages of standby error in data, electrostatic test are then to simulate a general electrostatic by using static gun
Discharge scenario discharges to electric/electronic device, to assess its performance by static discharge when.
Basic norm and the side of electrostatic test are defined in International Electrotechnical Commission electromagnetic compatibility standard IEC61000-4-2
Method：The test method of electrostatic is divided into directly electric discharge and indirect discharge, and directly electric discharge refers to implementing to discharge to Device under test, is put indirectly
Electricity refers to implementing electric discharge to the coupling plate near Device under test.And directly in discharge test, if required test point is metal,
Then to it into behavior contact discharge, if required test point is insulation, then to it into behavior atmospherical discharges.Contact discharge side
Method is that the electrode (pipette tips of static gun) of finger to finger test generator keeps the contact with Device under test and opened by the electric discharge in generator
Close a kind of test method of excitation electric discharge.The method of atmospherical discharges will test the charging electrode (pipette tips of static gun) of generator
Close to equipment and by spark to a kind of test method of Device under test excitation electric discharge.
With electronic product become increasingly abundant people's lives while, the electrostatic problem of electronic product also seems more prominent,
Therefore, electrostatic test is all indispensable test event to many electronic products.For this purpose, electrostatic discharge testing system starts
Applied to electrostatic test.
Chinese patent application CN102914717A (publication date 2013.02.06) discloses a kind of electrostatic discharge testing
Testing stand comprising sequentially connected longitudinal adjustment apparatus, lateral adjustment device, height adjustment device and electrostatic gun carriage, it is quiet
Electric gun carriage for installing static gun, longitudinal adjustment apparatus is used to that electrostatic gun carriage to be driven to move along longitudinal direction in the horizontal direction,
Lateral adjustment device is for driving electrostatic gun carriage transversely to move in the horizontal direction, and height adjustment device is for driving electrostatic
Gun carriage is vertically moving, and longitudinal adjustment apparatus, lateral adjustment device and height adjustment device pass through stepper motor reality
Now rotation driving, and linear pushing is realized by screw slider mechanism.
However, being had the following defects using this structure：Height adjustment device realizes that straight line pushes away by screw slider mechanism
Dynamic, the maximum movement speed of sliding block is relatively low, when testing the antistatic effect of electronic product by way of atmospherical discharges, quiet
In the electric discharge of electric rifle, electric power storage cycle, easily there is the electrostatic induction region that static gun does not leave electronic product in time, to
Cause to carry out moment continuous quadratic electric discharge to the test point of electronic product, electronic product is easily damaged in this way, so that electronics
The measuring accuracy of product antistatic effect is relatively low.
Invention content
The technical problem to be solved by the present invention is in order to overcome in the prior art electrostatic discharge testing testing stand passing through sky
Easily moment continuous quadratic is carried out when the mode of gas electric discharge tests the antistatic effect of electronic product to the test point of electronic product to put
Electricity, the lower defect of measuring accuracy, provide a kind of electrostatic discharge testing system.
The present invention is to solve above-mentioned technical problem by following technical proposals：
A kind of electrostatic discharge testing system comprising longitudinal adjustment apparatus, lateral adjustment device, vertical adjustment device and solid
Determine device, the longitudinal adjustment apparatus is described laterally to adjust for driving the fixing device to move along longitudinal direction in the horizontal direction
For regulating device for driving the fixing device transversely to move in the horizontal direction, the vertical adjustment device is described for driving
Fixing device is vertically moving, and for installing static gun, the vertical adjustment device includes the fixing device：
Vertical stepper motor；
Vertical synchronous belt mechanism, the motor shaft of the driving pulley of the vertical synchronous belt mechanism and the vertical stepper motor
It is sequentially connected；
Vertical rails and vertical sliding block, the vertical sliding block is fixed on the synchronous belt of the vertical synchronous belt mechanism and cunning is set
In the vertical rails, the fixing device is fixed on the vertical sliding block.
In the present solution, vertical adjustment device is compared by vertical synchronous belt mechanism and vertical sliding block realization linear advancement
It is identical in stepper motor in the structure for realizing linear pushing by screw slider mechanism in the prior art, it is vertical sliding
The maximum movement speed of block is larger, when testing the antistatic effect of electronic product by way of atmospherical discharges, in static gun
Electric discharge, in one of electric power storage cycle, it can be ensured that static gun leaves the electrostatic induction region of electronic product in time, to avoid
Carrying out the electric discharge of moment continuous quadratic to the test point of electronic product causes to damage electronic product, so improve electronic product resist it is quiet
The measuring accuracy of electric energy power.
Optionally, the vertical adjustment device further includes：
Electromagnetic brake module, the electromagnetic brake module are set to the vertical stepper motor；
When the vertical stepper motor is powered, the electromagnetic brake module does not brake the motor of the vertical stepper motor
Axis；
When the vertical stepper motor power-off, the electromagnetic brake module brakes the motor of the vertical stepper motor
Axis.
In the present solution, electromagnetic brake module setting, can prevent vertical stepper motor from powering off suddenly, lead to static gun
It falls and damages due to gravity.
Optionally, the vertical adjustment device further includes：
First vertical shell, the first vertical shell are fixed on one end of the vertical rails, and the vertical synchronization
Driving pulley with mechanism is located in the described first vertical shell；
Second vertical shell, the second vertical shell are fixed on the other end of the vertical rails, and described vertical same
Driven pulley of the step with mechanism is located in the described second vertical shell.
In the present solution, the setting of the first vertical shell and the second vertical shell can be to the active of vertical synchronous belt mechanism
Belt wheel and driven pulley play protective action.
Optionally, the outside wall surface of the described first vertical shell and/or the second vertical shell has spaced more
A heat dissipation convex ribs.
In the present solution, the setting of heat dissipation convex ribs can improve the heat dissipation effect of vertical synchronous belt mechanism.
Optionally, the vertical adjustment device further includes vertical buffer module, and the vertical buffer module is set to described
First vertical shell is towards the one side of the vertical sliding block and/or the second vertical shell towards the one of the vertical sliding block
Face.
In the present solution, vertical buffer module can be when vertical sliding block hits the first vertical shell and the second vertical shell
Cushioning effect is played, the impact force to the first vertical shell and the second vertical shell is reduced.
Optionally, the vertical buffer module includes multiple vertical buffer units, multiple vertical buffer unit distributions
In the described first vertical shell towards the one side of the vertical sliding block and/or the second vertical shell towards the vertical sliding block
One side, the vertical buffer unit use column structure.
In the present solution, the vertical buffer unit using column structure has preferable buffering effect.
Optionally, the striking face of the vertical buffer unit is spherical.The shape of vertical buffer unit can be increased in this way
Variable further decreases the impact force to the first vertical shell and the second vertical shell to increase buffer distance.
Optionally, the fixing device includes：
One end of linking arm, the linking arm is removably connected to the vertical sliding block, and the linking arm is along level side
To extending outwardly；
Locating ring, the locating ring include two and half locating rings being detachably connected, the other end connection of the linking arm
In the outside wall surface of one of them half locating ring.
In the present solution, locating ring setting easy disassembly static gun, and it is fixed reliable.Meanwhile setting linking arm can
Static gun is avoided to generate interference effect to the movement of vertical sliding block.
Optionally, the lateral adjustment device includes：
Horizontal stepper motor；
Synchronous cross band mechanism, the motor shaft of the driving pulley and the horizontal stepper motor of the synchronous cross band mechanism
It is sequentially connected；
Horizontal slide rail and transverse slider, the transverse slider is fixed on the synchronous belt of the synchronous cross band mechanism and cunning is set
It is fixed on the transverse slider, the horizontal slide rail in the vertical rails of the horizontal slide rail, the vertical adjustment device
It is connected to the longitudinal adjustment apparatus.
In the present solution, the synchronous belt moving displacement precision of synchronous cross band mechanism is higher, so that transverse slider exists
Repetitive positioning accuracy in horizontal slide rail is higher.Also, synchronous cross band mechanism driving is efficient, and reachable 98%, energy-saving effect
Obviously.
Optionally, the longitudinal adjustment apparatus includes：
Longitudinal stepper motor；
Longitudinal synchronous belt mechanism, the motor shaft of the driving pulley of the longitudinal direction synchronous belt mechanism and longitudinal stepper motor
It is sequentially connected；
Longitudinal slide rail and longitudinal sliding block, the longitudinal sliding block is fixed on the synchronous belt of longitudinal synchronous belt mechanism and cunning is set
In the longitudinal slide rail, the lateral adjustment device is fixed on the longitudinal sliding block.
In the present solution, the synchronous belt moving displacement precision of longitudinal synchronous belt mechanism is higher, so that longitudinal sliding block exists
Repetitive positioning accuracy in longitudinal slide rail is higher.Also, longitudinal synchronous belt mechanism transmission efficiency, reachable 98%, energy-saving effect
Obviously.
On the basis of common knowledge of the art, above-mentioned each optimum condition can be combined arbitrarily to get each preferable reality of the present invention
Example.
The positive effect of the present invention is that：
Electrostatic discharge testing system disclosed by the invention, vertical adjustment device pass through vertical synchronous belt mechanism and vertical sliding block
Realize linear advancement, compared with the prior art in by screw slider mechanism realize linear pushing structure, in stepper motor phase
With in the case of, the maximum movement speed of vertical sliding block is larger, and the anti-quiet of electronic product is being tested by way of atmospherical discharges
When electric energy power, in a cycle of electric discharge, the electric power storage of static gun, it can be ensured that static gun leaves the electrostatic of electronic product in time
Induction region causes to damage electronic product, in turn to avoid the test point to electronic product from carrying out the electric discharge of moment continuous quadratic
Improve the measuring accuracy of electronic product antistatic effect.
In addition, the synchronous belt moving displacement precision of vertical synchronous belt mechanism is higher, so that vertical sliding block is in vertical rails
On repetitive positioning accuracy it is higher, and vertical synchronous belt mechanism can preferably be suitable for static gun continue in the vertical direction it is past
Return movement.
In addition, vertical synchronous belt mechanism transmission efficiency, up to 98%, energy-saving effect is apparent, and maintaining is convenient, no
It needs to lubricate, maintenance cost is low.
Description of the drawings
Fig. 1 is the schematic diagram of the electrostatic discharge testing system of the embodiment of the present invention 1.
Fig. 2 is the dimensional structure diagram of the vertical adjustment device of the electrostatic discharge testing system of the embodiment of the present invention 1.
Fig. 3 is the dimensional structure diagram of the electrostatic discharge testing system of the embodiment of the present invention 2.
Fig. 4 is the dimensional structure diagram of the vertical adjustment device of the electrostatic discharge testing system of the embodiment of the present invention 2.
Fig. 5 is the enlarged structure schematic diagram of part A in Fig. 4.
Fig. 6 is the enlarged structure schematic diagram of part B in Fig. 4.
Fig. 7 is the enlarged structure schematic diagram of C portion in Fig. 3.
Fig. 8 is the enlarged structure schematic diagram of the parts D in Fig. 3.
Fig. 9 is the enlarged structure schematic diagram of the parts E in Fig. 3.
Reference sign
Electrostatic discharge testing system：1
Longitudinal adjustment apparatus：2
Longitudinal stepper motor：20
Longitudinal synchronous belt mechanism：21
Longitudinal slide rail：22
Longitudinal sliding block：23
First longitudinal direction shell：24
Second longitudinal direction shell：25
Longitudinal heat dissipation convex ribs：26
Longitudinal buffer component：27
Support base：28
Lateral adjustment device：3
Horizontal stepper motor：30
Synchronous cross band mechanism：31
Horizontal slide rail：32
Transverse slider：33
First lateral shell：34
Second lateral shell：35
Lateral heat dissipation convex ribs：36
Lateral buffer unit：37
Vertical adjustment device：4
Vertical stepper motor：40
Vertical synchronous belt mechanism：41
Vertical rails：42
Vertical sliding block：43
Electromagnetic brake module：44
First vertical shell：45
Second vertical shell：46
Vertical heat dissipation convex ribs：47
Vertical buffer unit：48
Fixing device：5
Linking arm：50
Locating ring：51
Laterally：60
It is longitudinal：70
Vertical direction：80
Specific implementation mode
It is further illustrated the present invention below by the mode of embodiment, but does not therefore limit the present invention to the reality
It applies among a range.
Embodiment 1
As shown in Figure 1, electrostatic discharge testing system 1 includes longitudinal adjustment apparatus 2, lateral adjustment device 3, vertical adjustment dress
Set 4 and fixing device 5.Fixing device 5 is for installing static gun (not shown).Longitudinal adjustment apparatus 2 is for driving fixation
Device 5 moves along longitudinal direction in the horizontal direction.Lateral adjustment device 3 is for driving fixing device 5 in the horizontal direction transversely
Movement.Vertical adjustment device 4 is for driving fixing device 5 vertically moving.In the present embodiment, longitudinal adjustment apparatus 2,
Lateral adjustment device 3, vertical adjustment device 4 and fixing device 5 are sequentially connected.Electrostatic discharge testing system 1 is for testing movement
The antistatic effect of terminal (such as mobile phone, tablet computer etc.).
As shown in Fig. 2, vertical adjustment device 4 includes vertical stepper motor 40, vertical synchronous belt mechanism 41, vertical rails 42
With vertical sliding block 43.The driving pulley of vertical synchronous belt mechanism 41 is connect with the electric machine shaft driving of vertical stepper motor 40.Vertically
Sliding block 43 is fixed on the synchronous belt of vertical synchronous belt mechanism 41 and is slidedly arranged on vertical rails 42.Fixing device 5 is fixed on vertical cunning
Block 43.
Vertical adjustment device 4 realizes linear advancement by vertical synchronous belt mechanism 41 and vertical sliding block 43, compared to existing
The structure of linear pushing is realized in technology by screw slider mechanism, it is identical in stepper motor, vertical sliding block 43
Maximum movement speed is larger, when testing the antistatic effect of electronic product by way of atmospherical discharges, in putting for static gun
In electric, electric power storage a cycle, it can be ensured that static gun leaves the electrostatic induction region of electronic product in time, to avoid to electricity
The test point of sub- product, which carries out the electric discharge of moment continuous quadratic, to be caused to damage electronic product, and then improves the antistatic energy of electronic product
The measuring accuracy of power.
The synchronous belt moving displacement precision of vertical synchronous belt mechanism 41 is higher, so that vertical sliding block 43 is in vertical rails
Repetitive positioning accuracy on 42 is higher, and vertical synchronous belt mechanism 41 can preferably be held suitable for static gun in the vertical direction
Continuous back and forth movement.41 transmission efficiency of vertical synchronous belt mechanism, up to 98%, energy-saving effect is apparent, and maintaining is convenient, no
It needs to lubricate, maintenance cost is low.
In use, entire electrostatic discharge testing system 1 passes through longitudinal adjustment apparatus 2, lateral adjustment device 3, vertical adjustment
Device 4 may be implemented transverse direction, three longitudinal direction, vertical direction directions compound motion, by horizontal and vertical compound motion come
The horizontal position of static gun is adjusted so that it can be moved to any position of mobile terminal plane；Above and below vertical direction
Movement can adjust height of the static gun apart from mobile terminal, and simulation people constantly lifts the action put down when operating static gun, and
Simulate electric discharge and the electric power storage process of static gun；Thus by the compound realization of transverse direction, three longitudinal direction, vertical direction directions to entire
The test of mobile terminal plane.
Embodiment 2
As shown in figure 3, electrostatic discharge testing system 1 includes longitudinal adjustment apparatus 2, lateral adjustment device 3, vertical adjustment dress
Set 4 and fixing device 5.Fixing device 5 is for installing static gun.Longitudinal adjustment apparatus 2 is for driving fixing device 5 in level side
70 movement along longitudinal direction upwards.Lateral adjustment device 3 is for driving transversely 60 movement in the horizontal direction of fixing device 5.Vertically
Regulating device 4 is for driving vertically 80 movement of fixing device 5.In the present embodiment, longitudinal adjustment apparatus 2, laterally tune
Regulating device 3, vertical adjustment device 4 and fixing device 5 are sequentially connected.Electrostatic discharge testing system 1 (compares for testing mobile terminal
Such as mobile phone, tablet computer) antistatic effect.
As shown in figure 4, vertical adjustment device 4 includes vertical stepper motor 40, vertical synchronous belt mechanism 41, vertical rails 42
With vertical sliding block 43.The driving pulley of vertical synchronous belt mechanism 41 is connect with the electric machine shaft driving of vertical stepper motor 40.Vertically
Sliding block 43 is fixed on the synchronous belt of vertical synchronous belt mechanism 41 and is slidedly arranged on vertical rails 42.Fixing device 5 is fixed on vertical cunning
Block 43.Vertical rails 42 are fixed on lateral adjustment device 3.In the present embodiment, vertical stepper motor 40 is walked using 57 series
Stepper motor, such control accuracy higher.Certainly, it in other embodiment, can also select according to the actual needs suitable vertical
Stepper motor 40.
Wherein, the material of the synchronous belt of vertical synchronous belt mechanism 41 uses non-metallic material.It can reduce in electronics in this way
Because coupling the electromagnetic interference generated to electronic product when product carries out electrostatic test, and then improve electronic product antistatic effect
Measuring accuracy.
Further, vertical adjustment device 4 further includes electromagnetic brake module 44, and electromagnetic brake module 44 is set to vertical step
Stepper motor 40.When vertical stepper motor 40 is powered, electromagnetic brake module 44 does not brake the motor shaft of vertical stepper motor 40.When
When vertical stepper motor 40 powers off, electromagnetic brake module 44 brakes the motor shaft of vertical stepper motor 40.It can prevent from erecting in this way
It is powered off suddenly to stepper motor 40, static gun is caused to fall and damage due to gravity.
Understood in conjunction with Fig. 5-6, vertical adjustment device 4 further includes the first vertical shell 45 and the second vertical shell 46.
First vertical shell 45 is fixed on one end of vertical rails 42.And vertically the driving pulley of synchronous belt mechanism 41 is located at first vertically
In shell 45.Second vertical shell 46 is fixed on the other end of vertical rails 42.And the driven pulley of vertical synchronous belt mechanism 41
In the second vertical shell 46.The setting of one vertical shell and the second vertical shell 46 can be to vertical synchronous belt mechanism 41
Driving pulley and driven pulley play protective action.
Further, the outside wall surface of the first vertical shell 45 and the outside wall surface of the second vertical shell 46 all have interval setting
Multiple vertical heat dissipation convex ribs 47.The setting of vertical heat dissipation convex ribs 47 can improve the heat dissipation effect of vertical synchronous belt mechanism 41.
In alternative embodiment, multiple vertical heat dissipation convex ribs 47 can be provided separately within the outside wall surface or the of the first vertical shell 45
The outside wall surface of two vertical shells 46.
In addition, vertical adjustment device 4 further includes vertical buffer module.Vertical buffer module is set to the first vertical shell 45
Towards vertical sliding block 43 and the second vertical shell 46 towards vertical sliding block 43 while.Vertical buffer module can be perpendicular
Cushioning effect is played when hitting the first vertical shell 45 and the second vertical shell 46 to sliding block 43, is reduced to the first vertical shell 45
With the impact force of the second vertical shell 46.In alternative embodiment, vertical buffer module can also be provided separately within first
Vertical shell 45 towards vertical sliding block 43 or the second vertical shell 46 towards vertical sliding block 43 while.
Further, vertical buffer module includes multiple vertical buffer units 48.Multiple vertical buffer units 48 are distributed in
First vertical shell 45 towards vertical sliding block 43 and the second vertical shell 46 towards vertical sliding block 43 while.It can replace
In the embodiment in generation, multiple vertical buffer modules can also be provided separately within the first vertical shell 45 towards the one of vertical sliding block 43
The one side of face or the second vertical shell 46 towards vertical sliding block 43.
Vertical buffer unit 48 uses column structure.In this way so that vertical buffer unit 48 has preferable buffering effect.
Specifically, the striking face of vertical buffer unit 48 is spherical.The deformation quantity of vertical buffer unit 48 can be increased in this way, to
Increase buffer distance, further decreases the impact force to the first vertical shell 45 and the second vertical shell 46.
Referring again to Fig. 4, fixing device 5 includes linking arm 50 and locating ring 51, and one end of linking arm 50 is detachably connected
In vertical sliding block 43, and linking arm 50 extends outwardly in the horizontal direction.Locating ring 51 includes two and half positioning being detachably connected
Ring.The other end of linking arm 50 is connected to the outside wall surface of one of them half locating ring.The setting easy disassembly electrostatic of locating ring 51
Rifle, and it is fixed reliable.Meanwhile linking arm 50, which is arranged, can avoid static gun from generating interference effect to the movement of vertical sliding block 43.
As shown in figure 3, lateral adjustment device 3 includes horizontal stepper motor 30, synchronous cross band mechanism 31, horizontal slide rail 32
With transverse slider 33.The driving pulley of synchronous cross band mechanism 31 is connect with the electric machine shaft driving of horizontal stepper motor 30.Laterally
Sliding block 33 is fixed on the synchronous belt of synchronous cross band mechanism 31 and is slidedly arranged on horizontal slide rail 32.The vertical cunning of vertical adjustment device 4
Rail 42 is fixed on transverse slider 33, and horizontal slide rail 32 is connected to longitudinal adjustment apparatus 2.The synchronous belt of synchronous cross band mechanism 31 is transported
Dynamic displacement accuracy is higher, so that repetitive positioning accuracy of the transverse slider 33 in horizontal slide rail 32 is higher.Also, it is laterally same
31 transmission efficiency of step band mechanism, up to 98%, energy-saving effect is apparent.
In the present embodiment, horizontal stepper motor 30 is using 57 serial stepper motors, such control accuracy higher.When
So, in other embodiment, suitable horizontal stepper motor 30 can also be selected according to the actual needs.
Further, the material of the synchronous belt of synchronous cross band mechanism 31 uses non-metallic material.It can reduce in this way
Because coupling the electromagnetic interference generated to electronic product when electronic product carries out electrostatic test, and then it is antistatic to improve electronic product
The measuring accuracy of ability.
Understood in conjunction with Fig. 7-8, lateral adjustment device 3 further includes 34 and second lateral shell 35 of the first lateral shell.
First lateral shell 34 is fixed on one end of horizontal slide rail 32, and the driving pulley of synchronous cross band mechanism 31 is located at first laterally
In shell 34.Second lateral shell 35 is fixed on the other end of horizontal slide rail 32, and the driven pulley of synchronous cross band mechanism 31
In the second lateral shell 35.The setting of first lateral shell, 34 and second lateral shell 35 can be to synchronous cross band mechanism
31 driving pulley and driven pulley plays protective action.
Further, the outside wall surface of the first lateral shell 34 and the outside wall surface of the second lateral shell 35 all have interval setting
Multiple lateral heat dissipation convex ribs 36.The setting of lateral heat dissipation convex ribs 36 can improve the heat dissipation effect of synchronous cross band mechanism 31.
In alternative embodiment, multiple lateral heat dissipation convex ribs 36 can be provided separately within the outside wall surface or the of the first lateral shell 34
The outside wall surface of two lateral shells 35.
In addition, lateral adjustment device 3 further includes lateral buffer module, lateral buffer module includes multiple lateral buffer units
37.Multiple transverse direction buffer units 37 are distributed in the first lateral shell 34 towards the one side of transverse slider 33 and the second lateral shell 35
Towards the one side of transverse slider 33.Lateral buffer module can hit the first lateral shell 34 and second laterally in transverse slider 33
Cushioning effect is played when shell 35, reduces the impact force to 34 and second lateral shell 35 of the first lateral shell.Alternative
In embodiment, lateral buffer module can also be provided separately within the first lateral shell 34 towards the one side of transverse slider 33 or second
One side of the lateral shell 35 towards transverse slider 33.
Lateral buffer unit 37 uses column structure.In this way so that lateral buffer unit 37 has preferable buffering effect.
The striking face of lateral buffer unit 37 is spherical.The deformation quantity of lateral buffer unit 37 can be increased in this way, it is slow to increase
Distance is rushed, the impact force to 34 and second lateral shell 35 of the first lateral shell is further decreased.
As shown in figure 3, longitudinal adjustment apparatus 2 includes longitudinal stepper motor 20, longitudinal synchronous belt mechanism 21, longitudinal slide rail 22
With longitudinal sliding block 23.The driving pulley of longitudinal synchronous belt mechanism 21 is connect with the electric machine shaft driving of longitudinal stepper motor 20.It is longitudinal
Sliding block 23 is fixed on the synchronous belt of longitudinal synchronous belt mechanism 21 and is slidedly arranged on longitudinal slide rail 22.Lateral adjustment device 3 is fixed on vertical
To sliding block 23.In the present embodiment, horizontal slide rail 32 is fixed on longitudinal sliding block 23.
The synchronous belt moving displacement precision of longitudinal synchronous belt mechanism 21 is higher, so that longitudinal sliding block 23 is in longitudinal slide rail
Repetitive positioning accuracy on 22 is higher.Also, 21 transmission efficiency of longitudinal synchronous belt mechanism, up to 98%, energy-saving effect is apparent.
In the present embodiment, longitudinal stepper motor 20 is using 86 serial stepper motors, such control accuracy higher, and power
Square bigger.Certainly, in other embodiment, suitable longitudinal stepper motor 20 can also be selected according to the actual needs.
Further, the material of the synchronous belt of longitudinal synchronous belt mechanism 21 uses non-metallic material.It can reduce in this way
Because coupling the electromagnetic interference generated to electronic product when electronic product carries out electrostatic test, and then it is antistatic to improve electronic product
The measuring accuracy of ability.
Understood in conjunction with Fig. 9, longitudinal adjustment apparatus 2 further includes first longitudinal direction shell 24 and second longitudinal direction shell 25.The
One longitudinal shell 24 is fixed on one end of longitudinal slide rail 22, and the driving pulley of longitudinal synchronous belt mechanism 21 is located at outside first longitudinal direction
In shell 24.Second longitudinal direction shell 25 is fixed on the other end of longitudinal slide rail 22, and the driven pulley position of longitudinal synchronous belt mechanism 21
In in second longitudinal direction shell 25.The setting of first longitudinal direction shell 24 and second longitudinal direction shell 25 can be to longitudinal synchronous belt mechanism 21
Driving pulley and driven pulley play protective action.
Further, the outside wall surface of first longitudinal direction shell 24 and the outside wall surface of second longitudinal direction shell 25 all have interval setting
Multiple longitudinal heat dissipation convex ribs 26.The setting of longitudinal heat dissipation convex ribs 26 can improve the heat dissipation effect of longitudinal synchronous belt mechanism 21.
In alternative embodiment, multiple longitudinal heat dissipation convex ribs 26 can be provided separately within the outside wall surface or the of first longitudinal direction shell 24
The outside wall surface of two longitudinal shells 25.
In addition, longitudinal adjustment apparatus 2 further includes longitudinal buffer module, longitudinal buffer module includes multiple longitudinal buffer components
27.Multiple longitudinal buffer components 27 are distributed in one side and second longitudinal direction shell 25 of the first longitudinal direction shell 24 towards longitudinal sliding block 23
Towards the one side of longitudinal sliding block 23.Longitudinal buffer module can hit first longitudinal direction shell 24 and second longitudinal direction in longitudinal sliding block 23
Cushioning effect is played when shell 25, reduces the impact force to first longitudinal direction shell 24 and second longitudinal direction shell 25.Alternative
In embodiment, longitudinal buffer module can also be provided separately within first longitudinal direction shell 24 towards the one side of longitudinal sliding block 23 or second
One side of the longitudinal shell 25 towards longitudinal sliding block 23.
Longitudinal buffer component 27 uses column structure.In this way so that longitudinal buffer component 27 has preferable buffering effect.
The striking face of longitudinal buffer component 27 is spherical.The deformation quantity of longitudinal buffer component 27 can be increased in this way, it is slow to increase
Distance is rushed, the impact force to first longitudinal direction shell 24 and second longitudinal direction shell 25 is further decreased.
In addition, longitudinal adjustment apparatus 2 further includes support base 28, support base 28 is removably connected to longitudinal slide rail 22
Bottom, and for being connected to workbench.The setting of support base 28 can reduce the vibration displacement of vertical sliding block 43.
As shown in figure 3, longitudinal adjustment apparatus 2 includes that two longitudinal synchronous belt mechanisms 21, two longitudinal slide rails 22 and two longitudinal directions are sliding
Block 23 is arranged in a one-to-one correspondence between two longitudinal synchronous belt mechanisms 21, two longitudinal slide rails 22 and two longitudinal sliding blocks 23.And two is longitudinal sliding
The transversely interval setting side by side in the horizontal direction of rail 22.The driving pulley of two longitudinal synchronous belt mechanisms 21 passes through transmission shaft driven
Connection.The driving pulley of one of longitudinal direction synchronous belt mechanism 21 is connect with the electric machine shaft driving of longitudinal stepper motor 20.Setting
Two longitudinal synchronous belt mechanisms 21, two longitudinal slide rails 22 and two longitudinal sliding blocks 23, can improve the stability in longitudinally adjust.
In addition, electrostatic discharge testing system 1 further includes master controller (not shown), master controller is filled with longitudinally adjust
2, lateral adjustment device 3, the electrical connection of vertical adjustment device 4 are set, to adjust fixing device 5 on transverse direction, longitudinal direction and vertical direction
Position.In the present embodiment, master controller is programmable controller.Password, which can be arranged, in master controller prevents layman
Operation cause insecurity, secondly, increase software limit (i.e. longitudinal sliding block 23, transverse slider 33 and the shifting of vertical sliding block 43
Dynamic displacement), it prevents the maloperation in debugging process from causing the damage of equipment, further increases electrostatic discharge testing system 1
Reliability.
Wherein, longitudinal stepper motor 20, horizontal stepper motor 30 and vertical stepper motor 40 are each configured with longitudinally controlled
Device (not shown), Lateral Controller (not shown) and upright controling device (not shown).Master controller is controlled respectively
Longitudinal controller, Lateral Controller and upright controling device processed.Longitudinal controller, Lateral Controller and upright controling device control respectively
Longitudinal controller, Lateral Controller and upright controling device, realize longitudinally, laterally, the adjusting of vertical direction action.
The test job process of the electrostatic discharge testing system 1 of the present embodiment is：
Test front position adjustment：Static gun is adjusted by longitudinal adjustment apparatus 2 and lateral adjustment device 3 in the horizontal direction
Position, and static gun position in the vertical direction is adjusted by vertical adjustment device 4, so that the transmitting terminal alignment of static gun
Electronic product (in the present embodiment, electronic product to be tested is mobile terminal, such as mobile phone, tablet computer etc.) to be tested
Test point, and (at this point, at the vertical sliding block 43 of vertical adjustment device 4 outside the electrostatic induction region of electronic product to be tested
In elemental height position)；
The vertical sliding block 43 of vertical adjustment device 4 moves up and down, and drives fixing device 5 and static gun to move back and forth, with right
One test point electric discharge is repeatedly (in the present embodiment, each test point is tested 10 times)；
Vertical sliding block 43 is maintained at elemental height position (being located at outside the electrostatic induction region of electronic product)；
The position of static gun in the horizontal direction is adjusted by longitudinal adjustment apparatus 2 and/or lateral adjustment device 3, so that
Static gun is moved to next test point and carries out electrostatic discharge testing；
So cycle carries out static air discharge test to realize to the surrounding to electronic product to be tested.
This process is provided with software limit, ensures not transfinite in motion process, ensures the safety of system, testing in addition
Find that test is abnormal in the process, can time out program continue to test so that system more hommization after eliminating extremely.
In the description of the present invention, one embodiment may be furnished with multiple attached drawings, the same part in the same embodiment
Reference numeral not necessarily marks in each attached drawing；It should be appreciated to those skilled in the art that in embodiment
When certain one or more attached drawing is described, it can be understood in conjunction with the other accompanying drawings in the embodiment；This field skill
Art personnel should be appreciated that do not indicate word it is specific it is corresponding be which attached drawing when, can be in conjunction with all in the embodiment
Attached drawing is understood.
In the description of the present invention, it is to be understood that, term "upper", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is orientation based on ... shown in the drawings or position
Relationship is set, is merely for convenience of description of the present invention and simplification of the description, device is not indicated or implied the indicated or element is necessary
With specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that this is only
For example, protection scope of the present invention is to be defined by the appended claims.Those skilled in the art without departing substantially from
Under the premise of the principle and substance of the present invention, many changes and modifications may be made, but these change and
Modification each falls within protection scope of the present invention.
Claims (10)
1. a kind of electrostatic discharge testing system comprising longitudinal adjustment apparatus, lateral adjustment device, vertical adjustment device and fixation
Device, the longitudinal adjustment apparatus is for driving the fixing device to move along longitudinal direction in the horizontal direction, the lateral adjustments
For device for driving the fixing device transversely to move in the horizontal direction, the vertical adjustment device is described solid for driving
It is vertically moving to determine device, the fixing device is for installing static gun, which is characterized in that the vertical adjustment device packet
It includes：
Vertical stepper motor；
Vertical synchronous belt mechanism, the electric machine shaft driving of the driving pulley of the vertical synchronous belt mechanism and the vertical stepper motor
Connection；
Vertical rails and vertical sliding block, the vertical sliding block are fixed on the synchronous belt of the vertical synchronous belt mechanism and are slidedly arranged on institute
Vertical rails are stated, the fixing device is fixed on the vertical sliding block.
2. electrostatic discharge testing system as described in claim 1, which is characterized in that the vertical adjustment device further includes：
Electromagnetic brake module, the electromagnetic brake module are set to the vertical stepper motor；
When the vertical stepper motor is powered, the electromagnetic brake module does not brake the motor shaft of the vertical stepper motor；
When the vertical stepper motor power-off, the electromagnetic brake module brakes the motor shaft of the vertical stepper motor.
3. electrostatic discharge testing system as described in claim 1, which is characterized in that the vertical adjustment device further includes：
First vertical shell, the first vertical shell are fixed on one end of the vertical rails, and the vertical synchronous belt machine
The driving pulley of structure is located in the described first vertical shell；
Second vertical shell, the second vertical shell are fixed on the other end of the vertical rails, and the vertical synchronous belt
The driven pulley of mechanism is located in the described second vertical shell.
4. electrostatic discharge testing system as claimed in claim 3, which is characterized in that the first vertical shell and/or described
The outside wall surface of second vertical shell has spaced multiple heat dissipation convex ribs.
5. electrostatic discharge testing system as claimed in claim 3, which is characterized in that the vertical adjustment device further includes vertical
Buffer module, the vertical buffer module are set to one side and/or institute of the described first vertical shell towards the vertical sliding block
State one side of the second vertical shell towards the vertical sliding block.
6. electrostatic discharge testing system as claimed in claim 5, which is characterized in that the vertical buffer module includes multiple perpendicular
To buffer unit, multiple vertical buffer units are distributed in one side of the described first vertical shell towards the vertical sliding block
And/or the second vertical shell, towards the one side of the vertical sliding block, the vertical buffer unit uses column structure.
7. electrostatic discharge testing system as claimed in claim 6, which is characterized in that the striking face of the vertical buffer unit is
Spherical.
8. electrostatic discharge testing system as described in claim 1, which is characterized in that the fixing device includes：
Linking arm, one end of the linking arm are removably connected to the vertical sliding block, and the linking arm in the horizontal direction to
Outer extension；
Locating ring, the locating ring include two and half locating rings being detachably connected, and the other end of the linking arm is connected to it
In half locating ring outside wall surface.
9. electrostatic discharge testing system as described in claim 1, which is characterized in that the lateral adjustment device includes：
Horizontal stepper motor；
Synchronous cross band mechanism, the electric machine shaft driving of the driving pulley and the horizontal stepper motor of the synchronous cross band mechanism
Connection；
Horizontal slide rail and transverse slider, the transverse slider are fixed on the synchronous belt of the synchronous cross band mechanism and are slidedly arranged on institute
Horizontal slide rail is stated, the vertical rails of the vertical adjustment device are fixed on the transverse slider, the horizontal slide rail connection
In the longitudinal adjustment apparatus.
10. electrostatic discharge testing system as described in claim 1, which is characterized in that the longitudinal adjustment apparatus includes：
Longitudinal stepper motor；
Longitudinal synchronous belt mechanism, the electric machine shaft driving of the driving pulley of the longitudinal direction synchronous belt mechanism and longitudinal stepper motor
Connection；
Longitudinal slide rail and longitudinal sliding block, the longitudinal sliding block are fixed on the synchronous belt of longitudinal synchronous belt mechanism and are slidedly arranged on institute
Longitudinal slide rail is stated, the lateral adjustment device is fixed on the longitudinal sliding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810537991.5A CN108519534A (en) | 2018-05-30 | 2018-05-30 | Electrostatic discharge testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810537991.5A CN108519534A (en) | 2018-05-30 | 2018-05-30 | Electrostatic discharge testing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108519534A true CN108519534A (en) | 2018-09-11 |
Family
ID=63426835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810537991.5A Pending CN108519534A (en) | 2018-05-30 | 2018-05-30 | Electrostatic discharge testing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108519534A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110850245A (en) * | 2019-11-19 | 2020-02-28 | 国网浙江平湖市供电有限公司 | A partial discharge simulation device for switchgear based on automatic control |
| CN110865285A (en) * | 2019-11-19 | 2020-03-06 | 国网浙江平湖市供电有限公司 | Switch cabinet partial discharge test model device |
| CN113570988A (en) * | 2021-07-16 | 2021-10-29 | 厦门大学 | Liquid crystal display panel electrostatic discharge test system and test method |
| CN115343552A (en) * | 2022-07-22 | 2022-11-15 | 青岛海尔电冰箱有限公司 | Electrostatic discharge testing device |
| CN116953558A (en) * | 2023-06-30 | 2023-10-27 | 东莞市华复实业有限公司 | Security protection power supply intelligent monitoring method based on Internet of things |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5376879A (en) * | 1992-11-03 | 1994-12-27 | Qrp, Incorporated | Method and apparatus for evaluating electrostatic discharge conditions |
| US6801046B1 (en) * | 2000-09-26 | 2004-10-05 | National Semiconductor Corporation | Method of testing the electrostatic discharge performance of an IC device |
| CN102914717A (en) * | 2012-11-13 | 2013-02-06 | 天津一汽夏利汽车股份有限公司 | Test bed for electrostatic discharge testing |
| CN102944379A (en) * | 2012-11-21 | 2013-02-27 | 陈伟 | Safety test device for adjustable portion of lamp |
| CN106249085A (en) * | 2016-08-30 | 2016-12-21 | 京东方科技集团股份有限公司 | Static discharge detection method and system |
| CN208255329U (en) * | 2018-05-30 | 2018-12-18 | 南昌华勤电子科技有限公司 | Electrostatic discharge testing system |
-
2018
- 2018-05-30 CN CN201810537991.5A patent/CN108519534A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5376879A (en) * | 1992-11-03 | 1994-12-27 | Qrp, Incorporated | Method and apparatus for evaluating electrostatic discharge conditions |
| US6801046B1 (en) * | 2000-09-26 | 2004-10-05 | National Semiconductor Corporation | Method of testing the electrostatic discharge performance of an IC device |
| CN102914717A (en) * | 2012-11-13 | 2013-02-06 | 天津一汽夏利汽车股份有限公司 | Test bed for electrostatic discharge testing |
| CN102944379A (en) * | 2012-11-21 | 2013-02-27 | 陈伟 | Safety test device for adjustable portion of lamp |
| CN106249085A (en) * | 2016-08-30 | 2016-12-21 | 京东方科技集团股份有限公司 | Static discharge detection method and system |
| CN208255329U (en) * | 2018-05-30 | 2018-12-18 | 南昌华勤电子科技有限公司 | Electrostatic discharge testing system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110850245A (en) * | 2019-11-19 | 2020-02-28 | 国网浙江平湖市供电有限公司 | A partial discharge simulation device for switchgear based on automatic control |
| CN110865285A (en) * | 2019-11-19 | 2020-03-06 | 国网浙江平湖市供电有限公司 | Switch cabinet partial discharge test model device |
| CN113570988A (en) * | 2021-07-16 | 2021-10-29 | 厦门大学 | Liquid crystal display panel electrostatic discharge test system and test method |
| CN115343552A (en) * | 2022-07-22 | 2022-11-15 | 青岛海尔电冰箱有限公司 | Electrostatic discharge testing device |
| CN115343552B (en) * | 2022-07-22 | 2025-10-10 | 青岛海尔电冰箱有限公司 | Electrostatic discharge test equipment |
| CN116953558A (en) * | 2023-06-30 | 2023-10-27 | 东莞市华复实业有限公司 | Security protection power supply intelligent monitoring method based on Internet of things |
| CN116953558B (en) * | 2023-06-30 | 2024-01-05 | 东莞市华复实业有限公司 | Security protection power intelligent monitoring device based on thing networking |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108519534A (en) | Electrostatic discharge testing system | |
| CN204575290U (en) | A kind of battery apparatus for impact testing | |
| CN103163392A (en) | Semi-anechoic chamber device and electromagnetic compatibility (EMC) test method | |
| CN211205638U (en) | Ultra-precise laser automatic de-weighting dynamic balancing machine of micro turbojet engine rotor | |
| CN104369379A (en) | Three-dimensional printer | |
| CN105607046B (en) | A kind of large-scale scanning frame for compact antenna test range and test system | |
| CN208255329U (en) | Electrostatic discharge testing system | |
| CN108731962B (en) | Bionic mechanical leg test platform | |
| CN202606407U (en) | Novel full-automatic comprehensive tester for high-frequency transformer | |
| CN118426437A (en) | A pantograph control test device and method for electrified highway heavy trucks | |
| CN101738300B (en) | Device for generating sine wave electromagnetic force | |
| CN110445965A (en) | CCD camera assembly and electronic equipment | |
| CN207662589U (en) | A kind of repeated impact test device suitable for tunnel protection door | |
| CN107228804B (en) | A kind of impact hammer for vertical mechanical impact testing machine | |
| CN208937436U (en) | A kind of battery pack Drop tester | |
| CN208276579U (en) | A kind of axis class feed device | |
| CN118419328A (en) | Semiconductor chip sorting braiding machine | |
| CN211860636U (en) | Wireless intelligent direct current ion fan | |
| CN206674320U (en) | PCB electronic circuit board automatic collecting devices are used in a kind of electronic components processing | |
| CN211503829U (en) | Projectile frequency simulator | |
| CN115793498A (en) | Leveling device of three-degree-of-freedom semi-physical simulation system and working method thereof | |
| CN208753282U (en) | A kind of solar battery crystalline silicon inserting piece device | |
| CN207623884U (en) | A kind of fixing device of novel and multifunctional computer hardware | |
| CN107132136B (en) | A method for realizing vertical impact test | |
| CN115343552A (en) | Electrostatic discharge testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180911 |
|
| RJ01 | Rejection of invention patent application after publication |