A kind of localization tool applied to pcb boardTechnical field
The present invention relates to PCB electric logging equipment technical field more particularly to a kind of localization tools applied to pcb board.
Background technique
Traditional PCB (printed wiring board) test method is by the manipulator of electrical measurement product needing the PCB of electrical measurement to grabBe put into above test fixture, and have pilot pin corresponding with pcb board upper surface hole above test fixture, with guarantee test fixture andAfter pcb board pressing, the probe and PCB-Pad (pad) of jig are correspondingly, to guarantee PASS function in electrical measurement processPut the high pass rate of plate.
In the application process of jig, the matching of positioning, pilot pin and PCB location hole in jig is in whole processAt all, positioning inaccurate testing efficiency will be low.
In realizing process of the present invention, at least there are the following problems in the prior art for inventor's discovery: in the market oneA little electronic products are that through-hole, also some clients do not want among plate such as LED (light emitting diode) plate of high resolutionIt asks pcb board to need one-time formed, there is no the pcb board of location hole for these, the development of electrical measurement process is with regard to extremely difficult.
Summary of the invention
In order to overcome the shortcomings of Related product in the prior art, the present invention proposes a kind of localization tool applied to pcb board,It is difficult to solve the problems, such as that existing no location hole pcb board carries out electrical measurement process.
The present invention provides a kind of localization tools applied to pcb board, comprising: is sequentially overlapped the top of setting from top to bottomLayer, two layers of top, three layers of top, middle layer and base and two angle-style locating pieces and four correcting pins；The top layer and top twoThrough-hole is provided on the corresponding region of layer, described two angle-style locating pieces and four correcting pins pass through the top layer and top twoThrough-hole on layer is simultaneously fixed on three layers of the top；Wherein, the angle-style locating piece is L shape, described two angle-style locating pieces pairTitle is distributed on a diagonal line of the top layer, and four correcting pins are symmetrically respectively distributed to the four of the top layer two-by-twoOn a direction, pcb board is placed on the top layer, and two angles of the pcb board wherein diagonal bits are positioned by described two angle-styleBlock limit, four sides of the pcb board are limited by four correcting pins respectively.
As a further improvement of the present invention, the two sides on the inside of the L-shaped angle-style locating piece is positioning surface, described twoPositioning surface junction is arc chord angle, and the two sides at an angle of the pcb board are respectively close to two positioning surfaces, and angle positionIn in the arc chord angle.
As a further improvement of the present invention, one or more positioning pin columns are provided on the angle-style locating piece, it is describedAngle-style locating piece is riveted on three layers of the top by the positioning pin column.
As a further improvement of the present invention, the height of the positioning pin column is lower than angle-style locating piece, or positions with angle-styleBlock is concordant, and the height of the angle-style locating piece is lower than the top surface of the pcb board.
As a further improvement of the present invention, it is respectively arranged with above two positioning surfaces on the angle-style locating pieceInclined-plane has between the inclined-plane and the pcb board and carries out the lead-in angle playing the guiding role when the positioning of angle in the pcb board.
As a further improvement of the present invention, its size of the through-hole of the angle-style locating piece is installed to position greater than the angle-styleThe size of block.
As a further improvement of the present invention, the upper end of the correcting pin is the tip of cone, is used for the pcb boardPositioning and guiding, the inside of correcting pin lower end is cased with spring, and the height of the correcting pin is higher than the top of the pcb boardFace.
As a further improvement of the present invention, its size of the through-hole of the correcting pin is installed greater than the correcting pinSize.
As a further improvement of the present invention, three layers of the top, middle layer, base's midfeather are provided with partition, and lead toIt crosses stud to fix, three layers of the top is for fixing the angle-style locating piece and correcting pin；Two layers points of the top layer and topBe not fixed by screws on three layers of the top, by adjusting the screw fixation position to the top layer and top two layersPosition is finely adjusted.
As a further improvement of the present invention, the integral thickness of the localization tool is fixed, and the middle layer includes NLaminate, the N are positive integer, and the middle layer carries out subtracting layer or adds layer according to the slope size that probe goes out needle.
Compared with prior art, the present invention has the following advantages:
Applied to the localization tool of pcb board by the way that pcb board to be put into the limits of four correcting pins described in the embodiment of the present inventionIt is slightly oriented in the range of position, finely positioning is carried out to the pcb board by described two angle-style locating pieces, while can correspond toThe position for finely tuning the top layer corresponds the syringe needle of probe and the Pad on tested pcb board, thus implement electrical measurement process,Structure is simple, and cost is relatively low, for the PCB plate of not location hole, can accurately be positioned and be implemented electrical measurement process, mentionThe high applicability of localization tool and the testing efficiency of pcb board electrical measurement process.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodimentAttached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for abilityFor the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attachedFigure.
Fig. 1 is the side view of the localization tool of the present invention applied to pcb board；
Fig. 2 is the top view of the localization tool of the present invention applied to pcb board；
Fig. 3 is the structural schematic diagram of angle-style locating piece of the present invention；
Fig. 4 and Fig. 5 is respectively cross-sectional view of the pcb board on two different directions on the localization tool.
Description of symbols: 1- top layer；2- pushes up two layers；3- pushes up three layers；4- middle layer；5- base；6- angle-style locating piece；7-Correcting pin；8- positioning pin column；9-PCB plate；61- positioning surface；62- arc chord angle；The inclined-plane 63-.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present inventionAttached drawing, technical scheme in the embodiment of the invention is clearly and completely described.Obviously, described embodiment is onlyA part of the embodiment of the present invention gives presently preferred embodiments of the present invention instead of all the embodiments in attached drawing.The present invention canTo realize in many different forms, however it is not limited to embodiment described herein, on the contrary, provide the mesh of these embodimentsBe to make the disclosure of the present invention more thorough and comprehensive.Based on the embodiments of the present invention, the common skill in this fieldArt personnel every other embodiment obtained without creative efforts belongs to the model that the present invention protectsIt encloses.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the inventionThe normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description toolThe purpose of the embodiment of body, it is not intended that in the limitation present invention.In description and claims of this specification and above-mentioned attached drawingTerm " includes " and " having " and their any deformations, it is intended that cover and non-exclusive include.Such as contain a systemThe process, method, system, product or equipment of column step or unit are not limited to listed step or unit, but optionalGround further includes the steps that not listing or unit, or optionally further comprising intrinsic for these process, methods, product or equipmentOther step or units.
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodimentsContaining at least one embodiment of the present invention.Each position in the description occur the phrase might not each mean it is identicalEmbodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly andImplicitly understand, embodiment described herein can be combined with other embodiments.
Refering to fig. 1 and shown in Fig. 2, the side view and vertical view of the localization tool respectively of the present invention applied to pcb boardFigure, the localization tool applied to pcb board include the top layer 1 for being sequentially overlapped setting from top to bottom, top two layer 2, push up three layer 3,Middle layer 4 and base 5 and two angle-style locating pieces 6 and four correcting pins 7, the top layer 1 and the top corresponding area of two floor 2Through-hole is provided on domain, described two angle-style locating pieces 6 and four correcting pins 7 pass through the top layer 1 and push up on two layer 2Through-hole and be fixed on it is described top three layer 3 on；Wherein, the angle-style locating piece 6 is L shape, and described two angle-style locating pieces 6 are rightTitle is distributed on a diagonal line of the top layer 1, and four correcting pins 7 are symmetrically respectively distributed to the top layer 1 two-by-twoFour direction on, pcb board 9 is placed on the top layer 1, and two angles of the pcb board 9 wherein diagonal bits are by described two anglesType locating piece 6 limits, and four sides of the pcb board 9 are limited by four correcting pins 7 respectively.
In embodiments of the present invention, the base 5 and electrical measurement product test dials (spring needle bed) contact, the base 5There is location hole above, effect is load-bearing and is matched by the positioning column on the location hole and the spring needle bed,The array point of the probe and needle bed upper spring needle that guarantee jig is that correspondingly, the thickness of the base 5 is greater than 3mm；It is describedThree layer 3 of top, middle layer 4,5 midfeather of base are provided with partition, and are fixed by stud, and the top is used to for three layer 3 fix instituteState angle-style locating piece 6 and correcting pin 7；The top layer 1 and top are fixed by screws in the top for two layer 2 three layer 3 respectivelyOn, the top layer 1 and the position pushed up two layer 2 can be finely adjusted by adjusting the fixation position of the screw；The topTwo layer 2 of thickness is smaller, is mainly used for isolating probe, avoids short circuit between probe；The top layer 1 is that the localization tool is most upperOne layer of face, effect are to place and fix pcb board 9, and guarantee the syringe needle of probe and mono- a pair of Pad on tested pcb board 9It answers, to implement electrical measurement process；The integral thickness of the localization tool be it is fixed, the middle layer 4 include N laminate, the NFor positive integer, the middle layer 4 carries out subtracting layer or adds layer according to the slope size that probe goes out needle, will not short circuit between guarantee probe.
As shown in fig.3, the two sides of L-shaped 6 inside of the angle-style locating piece is positioning surface 61, described two positioning surfaces 61Junction is arc chord angle 62, and the two sides at an angle of the pcb board 9 are respectively close to two positioning surfaces 61, and angle positionIn in the arc chord angle 62, the angle-style locating piece 6 is avoided to damage the PCB while carrying out angle positioning to the pcb board 9The corner of plate 9.
As shown in fig.4, one or more positioning pin columns 8 are provided on the angle-style locating piece 6, the angle-style locating piece6 are riveted on described push up on three layer 3 by the positioning pin column 8；The height of the positioning pin column 8 be lower than angle-style locating piece, or withAngle-style locating piece 6 is concordant, and the height of the angle-style locating piece 6 is lower than the top surface of the pcb board 9；On the angle-style locating piece 6The top of two positioning surfaces 61 is respectively arranged with inclined-plane, there is lead-in angle θ between the inclined-plane and the pcb board 9, described in settingLead-in angle purpose is to play the guiding role when the pcb board 9 carries out angle positioning, in embodiments of the present invention, the lead-in angle θFor acute angle, such as 30 °, 45 ° or 60 °.
In embodiments of the present invention, its size of the through-hole of the angle-style locating piece 6 is installed greater than the angle-style locating piece 6Size makes the top layer 1 and the fine tuning pushed up two layer 2 not influence the position of the angle-style locating piece 6.
As shown in fig.5, the height of the correcting pin 7 be higher than the pcb board 9 top surface, the correcting pin 7 it is upperEnd is the tip of cone, and for the positioning and guiding of the pcb board 9, the inside of 7 lower end of correcting pin is cased with spring, togetherWhen the size that its size of the through-hole of the correcting pin 7 is greater than the correcting pin 7 is installed, be placed on the pcb board 9 describedIt will not be stuck within the scope of the limit of four correcting pins 7；In embodiments of the present invention, the quantity of the correcting pin 7 is notIt is limited to four, can is six, eight etc., it is only necessary to which satisfaction is evenly distributed on four direction, according to the ruler of the pcb board 9Very little to can choose appropriate number of correcting pin 7, there is no restriction to this by the present invention.
Localization tool described in the embodiment of the present invention applied to pcb board is by being put into four correcting pins 7 for pcb board 9It is slightly oriented in limit range, finely positioning is carried out to the pcb board 9 by described two angle-style locating pieces 6, while canCorrespond the Pad on the syringe needle and tested PCB plate 9 of probe with the corresponding position for finely tuning the top layer 1, to implementElectrical measurement process, structure is simple, and cost is relatively low, for the pcb board 9 of not location hole, can accurately be positioned and implement electricityProcess is surveyed, the testing efficiency of the 9 electrical measurement process of applicability and pcb board of localization tool is improved.
In above-described embodiment provided by the present invention, it should be understood that disclosed device and method can pass through itIts mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the module, onlyOnly a kind of logical function partition, there may be another division manner in actual implementation, for example, multiple module or components can be tiedAnother system is closed or is desirably integrated into, or some features can be ignored or not executed.
The module as illustrated by the separation member may or may not be physically separated, aobvious as moduleThe component shown may or may not be physical module, it can and it is in one place, or may be distributed over multipleIn network unit.Some or all of the modules therein can be selected to realize the mesh of this embodiment scheme according to the actual needs's.
The above is only the embodiment of the present invention, are not intended to limit the scope of the patents of the invention, although with reference to the foregoing embodimentsInvention is explained in detail, still can be to aforementioned each specific reality for coming for those skilled in the artIt applies technical solution documented by mode to modify, or equivalence replacement is carried out to part of technical characteristic.It is all to utilize thisThe equivalent structure that description of the invention and accompanying drawing content are done directly or indirectly is used in other related technical areas, similarlyWithin the invention patent protection scope.