CN205484698U - Test of high frequency PCB board is with connecting slide glass - Google Patents

Abstract

The utility model belongs to the test and the detection area of PCB board, concretely relates to test of high frequency PCB board is with connecting slide glass. This connection slide glass includes the picture peg, the await measuring fixed micro -strip board in a side end face of PCB board of the orientation of picture peg, the surperficial orientation of the micro -strip board opposite side PCB board department of awaiting measuring, the orientation of micro -strip board awaits measuring the biao mian of PCB board for the guide card stationary plane, and it is anti that the impedance of micro -strip board equals to await measuring the PCB plate resistance, receive above -mentioned overdraft with / lifting force and open up flat being when plane with metal shrapnel, for this operating condition who connects the slide glass, under above -mentioned operating condition, metal shrapnel's the surperficial face towards the microstrip board is laminated in the guide card stationary plane of microstrip board, and metal shrapnel's orientation awaits measuring the test point that the surface face laminating simultaneously of PCB board awaited measuring on the PCB board and draws drawing a little of plate with the signal. This connection slide glass possesses the testing accuracy height, the standing -wave ratio is good, the isolation is good, bear big, the power consumption low grade advantage of power, its stable performance and reliable.

Description

A kind of frequency PCB board test is with connecting slide glass

Technical field

This utility model belongs to test and the detection field of pcb board, is specifically related to a kind of frequency PCB Board test is with connecting slide glass.

Background technology

Pcb board, is the abbreviation of printed circuit board (PCB), is also card, be most of electronic products Critical piece.At all electronic products before dispatching from the factory, during the use after even dispatching from the factory, all accompany Along with a series of performance test, to find in advance and to fix a breakdown, and then ensure product quality, Pcb board is all the more so.In the test platform for pcb board especially frequency PCB plate, radio frequency Probe test mode is the most universal；This is " CN102221376A " at such as Chinese patent notification number Patent name is the patent of invention text of " a kind of pcb board test fixture ", and Chinese patent is public Accuse number patent name being " CN 102707182A " sending out for " a kind of pcb board measurement jig " Bright patent text is all described: include can be movable toward each other upper and lower mould, upper and lower mould Forward surface at least one at arrange needle plate, needle plate with rf probe array arrange form. During work, with the test point on the tip alignment of rf probe pcb board to be tested, thus with radio frequency Probe bodies plays the signal of test instrunment to external world and draws purpose.But, along with society's science and technology Develop rapidly, the miniaturization of pcb board and integrated be trend of the times, possess huge intensive test The pcb board of point can be found everywhere.Traditional rf probe inherently possesses certain diameter, and some is even Arrange the fixed structures such as flange at end, unitize owing to above-mentioned rf probe cannot be carried out structure, The most quickly seek to the particular radio-frequency probe with pcb board impedance matching to be measured to become a difficult problem, often When causing because selecting reluctantly testing, standing-wave ratio is too low, and test accuracy is affected therewith.Equally, Due to the densification of test point, when adjacent two radio frequencies of pcb board to be measured test point gap ratio relatively Time near, the common ground between conventional rf probe and test fixture cannot meet test request, this meeting Cause testing data unreliable；Or owing to adjacent test point distance too closely occurs rf probe to do Relate to phenomenon, and then cause the situation occurring installing rf probe.In addition, conventional radio frequency Probe, due to self simple material-structure, cannot be applicable to the tested port of frequency PCB plate the most at all The occasion that power is bigger.Finally, the technology of high-frequency radio frequency probe is usually external monopolization, buying week Phase is long and expensive, it is clear that also cannot meet product development cycle and the cost control of current producer The requirements such as system, this also actual test on frequency PCB plate create certain impact.

Summary of the invention

The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, it is provided that a kind of rational in infrastructure And frequency PCB board test is with connecting slide glass reliably.This connection slide glass is mountable to current routine In test platform, and possess that test accuracy is high, standing-wave ratio is good, isolation is good, it is big to bear power, The series of advantages such as power attenuation is low, its stable performance and reliable.

For achieving the above object, this utility model have employed techniques below scheme:

A kind of frequency PCB board test is with connecting slide glass, it is characterised in that: this connection slide glass at least wraps Include the plate being securable in the upper mold of PCB test platform and/or lower mold；Plate towards to be measured One side end face of pcb board is fixed with for drawing at the catch cropping signal of pcb board to be measured with signal end tab Go out the impedance connecting portion of bridge；Described impedance connecting portion includes micro-strip plate, and micro-strip plate one side surface is solid Due to plate above-mentioned end face, opposite side surface is towards at pcb board to be measured, micro-strip plate towards to be measured The surface of pcb board is guide card stationary plane, and the impedance of micro-strip plate is equal to pcb board impedance to be measured；Impedance Connecting portion also includes the wavy metal clips being located between micro-strip plate and pcb board to be measured；With Plate drives the most affixed impedance connecting portion jointly to produce down pressure and/or vertical motion, metal elastic Sheet is oppressed pcb board to be measured and is flattened in time plane, for this connection slide glass with signal end tab pressurized Duty；Under above-mentioned duty, flatten in plane metal clips towards micro-strip The face, surface of plate fits in the guide card stationary plane of micro-strip plate, and metal clips towards pcb board to be measured The test point fitted on pcb board to be measured of simultaneously face, surface and signal draw the leading point of plate.

Plate profile is rectangular-shaped, and its length direction vertical be plugged in PCB test platform As on the slide rail of upper mold；Micro-strip plate upper surface profile is in rectangular with what plate lower surface profile coincide Shape, micro-strip plate upper surface is disposed with two installing holes along its length, installing hole vertical to by under Running through at micro-strip plate plate face and recessed plate lower surface on and；Metal clips profile is that two ends are downward The inverted " V " shape that folding sticks up, the stage casing welding machine of metal clips is fixed at micro-strip plate lower surface；Two Being filled with elastic insulated pad post in installing hole, this elastic insulated pad post highlights micro-strip plate lower surface and divides It is not resisted against two the folding section of sticking up places of metal clips.

Described installing hole vertical to run through plate plate body；The installing hole profile being positioned at plate is presented Sector hole footpath is more than the two-period form shoulder hole structure in hypomere aperture, and elastic insulated pad post profile is in above-mentioned The ladder shaft-like that shoulder hole structure is adaptive；Fill out being positioned at the installing hole above elastic insulated pad post Fill layout for the columned depression bar pushing against elastic insulated pad post；The upper surface of plate is disposed with use In pushing against the jacking block of depression bar, constitute the affixed cooperation of screw thread between the two.

The bottom face that described installing hole continues along jacking block is recessed to form counter bore structure at jacking block；Top The center vertical of the top end face of block runs through and arranges screw mounting hole, trip bolt vertical to by upper Under and through screw mounting hole and with constitute between plate upper surface that screw thread is affixed coordinates.

It is symmetrically extended fixing ear at the both sides at the upper surface place of plate, two fixing ears have all passed through Wear be equipped with vertical to pilot hole, guide post from top to bottom through this pilot hole to be screwed to On above-mentioned slide rail；Arranging compression spring at the shaft of guide post, the upper end of compression spring is resisted against leads At the top nut of bar, lower end is resisted against at the upper surface of fixing ear.

The impedance of described micro-strip plate is 50 Ω.

The beneficial effects of the utility model are:

1), being different from the rf probe structure that tradition necessarily uses, this utility model is with uniqueness Possess plane and the metal clips of wavy two kinds of deformed state, coordinate and only occur at metal clips Deformation and when flattening can the micro-strip plate of face laminating therewith, thus realize being positioned at below metal clips The pcb board to be measured being arranged side by side and the signal conduction mated under impedance between signal end tab and transmission Test purpose.Loaded down with trivial details with the such as use that traditional probe in detecting mode is brought and be not suitable for big merit Pcb board test operation under rate situation is compared: this utility model is based on realizing without under probe premise High-accuracy PCB on-line testing demand, take full advantage of what metal clips its own resilient was brought High deformation behavior and high resiliency.PCB test platform corresponding mould drive under, metal clips or Reply wavy thus separate pcb board to be measured and micro-strip plate, and separate signal end tab and micro-strip Plate.Or because of corresponding upper and lower molding pressure in flattening shape, connect pcb board to be measured, micro-the most completely Band plate and signal end tab.The elastic buffer of of metal clips itself also ensure that for fragile PCB Under the protection of plate.Its flexible movements, respond fast, and the accuracy of test is high, is more suitable for high frequency The testing requirement of high-power pcb board.

It is worthy of note, the most just frequently as leading when metal clips should be at complete flat Logical bridge, and connect the test point of pcb board to be measured and the leading point of signal end tab.On the one hand, Only metal clips fit completely micro-strip plate in other words conj.or perhaps guide card thereon time, whole " bridge " It is under the state consistent with pcb board impedance to be measured；And under the state only having this impedance matching, after Continuous test data are the most meaningful.On the other hand, metal clips is completely spread out micro-strip plate of fitting, should For the implementation of kind premise can be tested than the laminating of " part " metal clips, it is clear that operation Get up more convenient.During concrete operations, only need to by maximized for this connection slide glass be tightly pressed against to be measured At pcb board and signal end tab, realizability is the most higher, is also more suitable for industrialized setting Meter and production.

To sum up, this utility model can individually be fixed on pcb board test platform, have low cost, Easy to process, assembly period is short, versatility is high, it is respond well to test, be easy to keep in repair replacing etc. Number of advantages, can effectively meet the test of current pcb board, especially be filled with current high-frequency high-power PCB The blank testing of plate, its stable performance and reliable.

2), under the mould drive actions of pcb board test platform, this utility model using plate as Main body, on the one hand arranges fixing ear, thus realizes this utility model and current PC B along plate both sides The most affixed between board test platform；On the other hand, vertical in plate arrange installing hole, Collocation inverted " V " shape metal clips, optimization achieve the precompression for this metal clips Keep effect, thus facilitate under metal clips precompressed reset at nominal conditions and duty Elastic flattening effect.By said structure, this utility model the most further meet high-power, Frequency PCB testing requirement under big electric current；Simultaneously, use fixing ear and installing hole the two bullet Property position, the elastic design of four points of arrange in pairs or groups two elastic insulated pad posts and two compression springs, Thus freely can be adjusted by pointwise and each point elastic force naturally supplementary, it is to avoid metal clips connection The pressure that may cause when pcb board to be measured and signal end tab is uneven and insufficient contact etc. asks Topic, thus better meet above-mentioned test request.

3), elastic insulated pad post, it is provided that metal clips precompression in normal state, one Aspect dependence depression bar is against elastic insulated pad post, thus ensure that this elastic insulated pad post is at metal Elastic pressure effect between shell fragment and depression bar；On the other hand, elastic insulated pad post itself is as absolutely Edge body, also ensure that the current signal sent by the test point of pcb board to be measured, is unlikely to direct edge Elastic insulated pad post is dissipated at the plate of metal, and then has influence on the accurate of actual test data Property.During installation, rely on along installing hole, be first placed into elastic insulated pad post, place into depression bar and compress, Again by the way of jacking block compresses depression bar, can complete above-mentioned installation operation, its operation is the most extremely Convenient, functional reliability and stability also can be effectively ensured.

Accompanying drawing explanation

Fig. 1 is perspective view of the present utility model；

Fig. 2 is Facad structure figure of the present utility model；

Fig. 3 is the structure sectional view of Fig. 2；

Fig. 4 is that this utility model is in original state, namely when metal clips is in normal condition Operating diagram；

Fig. 5 is the I part partial enlarged drawing of Fig. 4；

Fig. 6 is that this utility model is in contact Pre strained state, namely metal clips generation compressive deformation Operating diagram during process；

Fig. 7 is the II part partial enlarged drawing of Fig. 6；

Fig. 8 is that this utility model is in running order, namely when the complete stress of metal clips flattens Operating diagram；

Fig. 9 is the III part partial enlarged drawing of Fig. 8.

In accompanying drawing, each label is as follows with each component names corresponding relation of the present utility model:

A-pcb board to be measured b-signal end tab

A-slide rail B-testing base

10-plate 11-fixes ear 21-micro-strip plate 22-metal clips

30-elastic insulated pad post 40-depression bar

50-jacking block 60-trip bolt

70-guide post 80-compression spring

Detailed description of the invention

For ease of understanding, it is embodied as structure and workflow here in connection with accompanying drawing to of the present utility model Journey describes below making:

Concrete structure of the present utility model, as Figure 1-3, it includes two guide posts 70, two Root compression spring 80, one is with 10, jacking block 50, of plate of symmetrical fixing ear 11 Elastic insulated pad post 30, Block-matching of 60, two depression bars of root trip bolt 40, two is to 50 Ω 21, one piece of rectangular metal clips 22 in " V " shape of the micro-strip plate of impedance.During assembling, Based on plate 10, in installing hole the most within it, insert elastic insulated pad post 30 He successively Depression bar 40, and by trip bolt 60, jacking block 50 is enclosed within the top revealed section of depression bar 40, To compress depression bar 40.Now due to jacking block 50 and the contention effect of depression bar 40, elastic insulated pad post 30 are extruded, and the bottom part of the most elastic insulated pad post 30 exposes the lower surface of micro-strip plate 21. Micro-strip plate 21 is welded on plate 10 lower surface, and solid welding gold again at the lower surface of micro-strip plate 21 Belong to shell fragment 22, and the folding section of sticking up making the two ends of metal clips 22 downward bears against in above-mentioned elasticity At the exposed junction of insulation padding pole 30.The profile of metal clips 22 can be that directly " V " word is tied Structure, it is also contemplated that at two ends extension the most reversely with each other turnup structure or the rounding off knot of " V " word Structure, as shown in Figures 1 and 3, in order to draw at the pcb board a to be measured and signal touching lower section During plate b so that both contact actions are the most smooth.The two of plate 10 fix on ear by to Under wear guide post successively, guide post is the bolt structure that there is nut on top.Overlap on guide post 70 If compression spring 80, and the two ends of compression spring 80 are born against at the nut of guide post 70 and At the upper surface of fixing ear 11, so that each forms integral spring construction.

This utility model actual mechanical process is as follows:

1), pcb board test platform is checked, and by pcb board a to be measured and signal end tab b successively It is arranged in parallel in testing base B of pcb board test platform.

2), guide post 70 of the present utility model is screwed on the slide rail A of pcb board test platform Place so that plate 10 is from top to bottom through hole reserved on slide rail A.Slide rail A is fixed on State the top of testing base B and be connected with the power drive portion of platform.Now metal clips 22 is firm It is positioned at well pcb board a to be measured and the surface of signal end tab b.Shown in this state namely Fig. 4-5 Pre strained state, now metal clips 22 only a little by elastic insulated pad post 30 and depression bar 40 Micro-power of compressing such that it is able to keep normal " V " shape structure.

3), when whole slide rail A is moved down by the power in above-mentioned power drive portion, metal elastic Sheet 22 gradually stress is descending, and two folding sections of sticking up of metal clips 22 touch PCB to be measured the most respectively Plate a and the upper surface of signal end tab b, and start by the two feedback force, and then produce Raw deformation.Now, under optimized situation, the most only metal clips 22 turns on pcb board a to be measured And signal end tab b, this state is contact Pre strained state, as shown in fig. 6-7.Under this state, Owing to micro-strip plate 21 is not engaged in turn on process, the most only with metal clips 22 impedance the most not Mate the impedance of pcb board a to be measured, the most do not calculate meaning.

4), slide rail A continue traveling downwardly, metal clips 22 continues stress, until in flattening shape completely State.Now, the most elastic insulated pad post 30 is via slight stress as shown in fig. 6-7 to Fig. 8-9 Shown forced compression is to extreme position, and meanwhile, the compression spring 80 on guide post 70 also stretches Position is replied to the limit preset.In compression spring 80 and the huge reply of elastic insulated pad post 30 Under power effect, at the guide card stationary plane that metal clips 22 is fitted on micro-strip plate 21 completely, This state reaches to meet the conducting state of requirement, is also the duty shown in Fig. 8-9.This shape Under state, 50 Ω impedances of micro-strip plate 21 self just match the 50 Ω impedances of pcb board a to be measured, Circuit turn-on, the transition transmission of radiofrequency signal is achieved, and possesses test meaning, can carry out Follow-up a series of test.

In summary, advantage of the present utility model is:

1), this utility model be designed with spring-piece type overlap joint transmission structure, can meet high-power, big The frequency PCB testing requirement of electric current.

2), this utility model devise the micro-strip plate of 50 Ω impedance matchings, well ensure that transporting Can, reach good mating with test device and Meter Test system impedance；It is simultaneously achieved little The test of the pcb board away from pad, the most also the most continuous must the test for large batch of pcb board carries Supply powerful guarantee.

3), this utility model use compression spring coordinate elastic insulated pad post four point elasticities design, Can even adjust elastic insulated pad column length by adjusting depression bar length, change initial shape The power that compresses that two folding sections of sticking up of the metal clips under state are subject to, thus avoid metal clips connecting When pcb board to be measured and signal end tab, the pressure that may cause is uneven and insufficient contact Problem, thus preferably meet test request.

4), initial designs thinking of the present utility model, can individually be fixed on PCB test platform, Thus possessed low cost, easy to process, assembly period is short, versatility is higher, test effect good Well, it is easy to keep in repair the advantages such as replacing, it is possible to meet most of pcb board testing requirement.Meanwhile, by In the uniqueness of this utility model structure, be allowed to be provided simultaneously with that test accuracy is high, standing-wave ratio is good, The advantages such as isolation is good, it is big to bear power, power attenuation is low, its service behaviour is the most reliable and the most stable.

Claims (6)

1. a frequency PCB board test is with connecting slide glass, it is characterised in that: this connection slide glass is extremely Plate (10) in the upper mold including less being securable to PCB test platform and/or lower mold；Plate (10) The side end face towards pcb board to be measured be fixed with for pcb board to be measured and signal end tab it Catch cropping signal draws the impedance connecting portion of bridge；Described impedance connecting portion includes micro-strip plate (21), Micro-strip plate (21) one side surface is fixed on plate (10) above-mentioned end face and opposite side surface is towards treating Surveying at pcb board, the surface towards pcb board to be measured of micro-strip plate (21) is guide card stationary plane, micro- The impedance of band plate (21) is equal to pcb board impedance to be measured；Impedance connecting portion also includes being located in micro-strip Wavy metal clips (22) between plate (21) and pcb board to be measured；With plate (10) The most affixed impedance connecting portion is driven jointly to produce down pressure and/or vertical motion, metal clips (22) oppress pcb board to be measured to flatten in time plane, for this connection with signal end tab pressurized The duty of slide glass；Under above-mentioned duty, flatten in plane metal clips (22) The face, surface towards micro-strip plate (21) fit in the guide card stationary plane of micro-strip plate (21), and gold Belong to the test on the face laminating pcb board to be measured simultaneously of the surface towards pcb board to be measured of shell fragment (22) Point draws the leading point of plate with signal.

A kind of frequency PCB board test the most according to claim 1 connects slide glass, and it is special Levy and be: plate (10) profile is rectangular-shaped, and its length direction vertical be plugged in PCB On the slide rail as upper mold of test platform；Micro-strip plate (21) upper surface profile in plate (10) The rectangle that lower surface profile coincide, micro-strip plate upper surface is disposed with two installations along its length Hole, installing hole vertical to from bottom to top run through micro-strip plate (21) plate face and recessed plate (10) At lower surface；Metal clips (22) profile is that the inverted " V " shape stuck up, metal are rolled over downwards in two ends The stage casing welding machine of shell fragment (22) is fixed at micro-strip plate (21) lower surface；Fill in two installing holes Flexible insulation padding pole (30), this elastic insulated pad post (30) highlights micro-strip plate (21) following table Face also bears against two the folding section of sticking up places in metal clips (22).

A kind of frequency PCB board test the most according to claim 2 connects slide glass, and it is special Levy and be: described installing hole vertical to run through plate (10) plate body；It is positioned at plate (10) Installing hole profile present sector hole footpath more than the two-period form shoulder hole structure in hypomere aperture, elastic insulated Pad post (30) profile is in the ladder shaft-like adaptive with above-mentioned shoulder hole structure；Elastic insulated being positioned at Fill layout in the installing hole of the top of pad post (30) to be used for pushing against elastic insulated pad post (30) Columned depression bar (40)；The upper surface of plate (10) is disposed with for pushing against depression bar (40) Jacking block (50), between the two constitute the affixed cooperation of screw thread.

A kind of frequency PCB board test the most according to claim 3 connects slide glass, and it is special Levy and be: described installing hole continues recessed with at jacking block (50) place along the bottom face of jacking block (50) Form counter bore structure；The center vertical of the top end face of jacking block (50) runs through and arranges screw mounting hole, Trip bolt (60) vertical to from top to bottom through screw mounting hole table upper with plate (10) The affixed cooperation of screw thread is constituted between face.

5. connect according to a kind of frequency PCB board test described in Claims 2 or 3 or 4 and carry Sheet, it is characterised in that: it is symmetrically extended fixing ear at the both sides at the upper surface place of plate (10) (11), two fixing ears (11) are all provided through vertical to pilot hole, guide post (70) From top to bottom through this pilot hole to be screwed on above-mentioned slide rail；The shaft of guide post (70) Place arranges compression spring (80), and the upper end of compression spring (80) is resisted against guide post (70) At the nut of top, lower end is resisted against at the upper surface of fixing ear (11).

6. according to a kind of frequency PCB board test described in claim 1 or 2 or 3 or 4 even Carry sheet, it is characterised in that: the impedance of described micro-strip plate (21) is 50 Ω.