Testing tool for circuit board
Technical field
A kind of testing tool, particularly a kind of testing tool in order to testing circuit board.
Background technology
See also Fig. 1 a, it is in order to show the synoptic diagram of available circuit board test tool construction.As shown in the figure, existing testing tool for circuit board 1, it comprises lower platen 11, this lower platen 11 is provided with four first support columns 111 and two second support columns 112, this first support column 111 is arranged with first elastomeric element 113 and second elastomeric element 114 respectively with these second support column, 112 outsides, the side 11a of this lower platen 11 offers fixed part 115, and this fixed part 115 is fixed in first hook part 117 by fixture 116 this side 11a of this lower platen 11; Loading plate 12, it is set up on this first support column 111, and this loading plate 12 is provided with four fixed legs 121 and three pushbutton switches 122; Top board 13, it is arranged on this second support column 112, this top board 13 is provided with second hook part 131 corresponding to the side 11a that this lower platen 11 is fixed with this first hook part 117, and the end 117a that colludes of this first hook part 117 holds 131a relative with colluding of this second hook part 131.
See also Fig. 1 b, it shows the synoptic diagram of existing testing tool for circuit board when folder is established circuit board to be tested.As shown in the figure, when circuit board 14 to be tested places on the aforementioned existing testing tool for circuit board 1, this top board 13 can be depressed towards these lower platen 11 directions, and the colluding of end 117a and this second hook part 131 of colluding of this first hook part 117 held the mutual trip of 131a, by the reacting force that is produced behind this first elastomeric element 113 and second elastomeric element, 114 pressurizeds, hold the end 131a that colludes of 117a and this second hook part 131 to draw in the opposite direction the colluding of this first hook part 117 of mutual trip, thereby the pressure by this top board 13 should be fixed on this loading plate 12 by circuit board 14 to be tested.
The major defect of above-mentioned existing testing tool for circuit board is to adjust this lower platen 11 and presss from both sides the spacing of establishing this circuit board 14 to be tested with this top board 13, and promptly this testing tool for circuit board 1 only can press from both sides this circuit board 14 to be tested of establishing specific thicknesses.Particularly, because this first hook part 117 can't be adjusted with the position that this second hook part 131 is provided with, when the thickness of this circuit board 14 to be tested increases, the colluding of end 117a and this second hook part 131 of colluding of this first hook part 117 held 131a trip mutually, relative, when the thickness of this circuit board 14 to be tested reduces, though the colluding of end 117a and this second hook part 131 of colluding of this first hook part 117 held 131a trip mutually, but this top board 13 and this 14 of circuit board to be tested can produce the gap, so can't establish this circuit board 14 to be tested by firm folder.
In sum, how to provide a kind of can be according to the thickness of different circuit boards to be tested, the spacing that adjustment is established the mechanism of this circuit board to be tested in order to folder, thus firm folder is established the testing tool for circuit board of this circuit board to be tested, becomes the technical matters that needs to be resolved hurrily at present then.
Summary of the invention
For solving the shortcoming of aforementioned prior art, the invention provides a kind of can be according to the thickness of different circuit boards to be tested, adjust the spacing of establishing the mechanism of this circuit board to be tested, thereby firm folder be established the testing tool for circuit board of this circuit board to be tested in order to folder.
Testing tool for circuit board of the present invention, comprise: lower platen, this lower platen is provided with a plurality of first support columns and at least one second support column, this first support column and this second support column outside are arranged with first elastomeric element and second elastomeric element respectively, at least one side of this lower platen offers fixed part, and this side of this lower platen is fixed in first hook part that this fixed part will have a limiting section by fixture; Loading plate, it is set up on this first support column and is supported by this first elastomeric element, and this loading plate is provided with a plurality of fixed legs; And top board, it is arranged on this second support column and is supported by this second elastomeric element, and this top board is provided with second hook part corresponding to the side that this lower platen is fixed with this first hook part, and the end that colludes of this first hook part is held relative with colluding of this second hook part.
Than prior art, testing tool for circuit board of the present invention when the thickness of circuit board to be tested changes, can pass through the position of the limiting section of this first hook part of adjustment, revises the spacing that this lower platen and this top board folder is established this circuit board to be tested.
Description of drawings
Fig. 1 a is the synoptic diagram of available circuit board test tool construction;
Fig. 1 b is the synoptic diagram of existing testing tool for circuit board when folder is established circuit board to be tested;
Fig. 2 a is the synoptic diagram of testing tool for circuit board structure of the present invention; And
Fig. 2 b is the synoptic diagram of testing tool for circuit board of the present invention when folder is established circuit board to be tested.
Description of reference numerals
1 testing tool for circuit board
11 lower platens
The 11a side
111 first support columns
112 second support columns
113 first elastomeric elements
114 second elastomeric elements
115 fixed parts
116 fixtures
117 first hook parts
117a colludes end
12 loading plates
121 fixed legs
122 pushbutton switches
13 top boards
131 second hook parts
131a colludes end
14 circuit boards to be tested
2 testing tool for circuit board
21 lower platens
The 21a side
211 first support columns
212 second support columns
213 first elastomeric elements
214 second elastomeric elements
215 fixed parts
216 fixtures
217 first hook parts
The 217a limiting section
217b colludes end
22 loading plates
221 fixed legs
The 221a body
The 221b protuberance
222 pushbutton switches
23 top boards
231 second hook parts
231a colludes end
24 bases
241 the 3rd support columns
25 circuit boards to be tested
251 perforations
252 button parts
Embodiment
Below by particular specific embodiment explanation embodiments of the present invention, those skilled in the art can understand other advantage of the present invention and effect easily by the disclosed content of this instructions.The present invention also can be implemented or be used by other different specific embodiment, and the every details in this instructions also can be based on different viewpoints and application, carries out various modifications and change under the spirit of the present invention not deviating from.
See also Fig. 2 a, it is the synoptic diagram of testing tool for circuit board structure of the present invention.As shown in the figure, testing tool for circuit board 2 of the present invention comprises: lower platen 21, loading plate 22 and top board 23.
This lower platen 21 is provided with four first support columns 211 and two second support columns 212, this first support column 211 is arranged with first elastomeric element 213 and second elastomeric element 214 respectively with these second support column, 212 outsides, the side 21a of this lower platen 21 offers fixed part 215, this fixed part 215 is fixed in this side 21a of this lower platen 21 by fixture 216 with first hook part 217, and this first hook part 217 offers limiting section 217a.This first elastomeric element 213 and second elastomeric element 214 are pressure spring.
In present embodiment, formation rectangular parallelepiped hole that this limiting section 217a is preferable or rectangular parallelepiped fillet hole, and this rectangular parallelepiped hole or rectangular parallelepiped fillet hole are provided with the plane of four first support columns 211 and two second support columns 212 perpendicular to this lower platen 21.In addition, this fixed part 215 is a screw, 216 of this fixtures are the screw of corresponding this screw, and the sectional area of the nut of this screw is greater than the width of this limiting section 217a, and having the length of the nail portion of screw thread, this screw is longer than the thickness of this first hook part 217, in view of the above, this fixture 216 can run through this limiting section 217a and be locked in this fixed part 215, can this first hook part 217 be locked in this lower platen 21 by snap-in force after this fixture 216 is locked in this fixed part 215.Relative, after this fixture 216 is unclamped at these fixed part 215 places certainly, can make this first hook part 217, the vertical height of adjusting under the qualification of this fixture 216 by this limiting section 217a.
In present embodiment, testing tool for circuit board 2 of the present invention also comprises base 24, this base 24 is provided with four the 3rd support columns 241, and this lower platen 21 is fixedly arranged on these four the 3rd support columns 241, and is arranged on this base 24 by these four the 3rd support columns 241.In view of the above, this lower platen 21 can be suspended in the air by the support of this base 24, thereby when height is vertically adjusted in this first hook part 217, can not be subjected to the restriction on working top or board surface.
Loading plate 22 is set up on this first support column 211 and by this first elastomeric element 213 and supports, and this loading plate 22 is provided with four fixed legs 221 and three pushbutton switches 222.These four fixed legs 221 are four perforations 251 that corresponding circuit board to be tested 25 is offered in present embodiment, and the sectional area of the body 221a of this support column 221 is greater than the aperture of this perforation 251, the sectional area of the protuberance 221b of this support column 221 then is equal to or slightly less than the aperture of this perforation 251, thereby when making this circuit board 25 to be tested be arranged on this fixed leg 221, can set up the surface maintenance certain clearance of these four fixed legs 221 and these three pushbutton switches 222 with this loading plate 22.
In addition, this circuit board 25 to be tested is provided with three button parts 252, whether 222 of these three pushbutton switches can correspond to the position of these three button parts 252 respectively when being set up on this fixed leg 221 corresponding to this testing circuit board 25, thereby can normal operation by three button parts 252 on these three button parts, 252 these testing circuit boards 25 of test.
Top board 23, it is arranged on this second support column 212 and is supported by this second elastomeric element 214, this top board 23 is provided with second hook part 231 corresponding to the side 21a that this lower platen 21 is fixed with this first hook part 217, and the end 217b that colludes of this first hook part 217 holds 231a relative with colluding of this second hook part 231.
See also Fig. 2 b, it shows the synoptic diagram of testing tool for circuit board of the present invention when folder is established circuit board to be tested.As shown in the figure, when circuit board 25 to be tested places on the aforementioned testing tool for circuit board of the present invention 2, this top board 23 can be depressed towards these lower platen 21 directions, and the colluding of end 217b and this second hook part 231 of colluding of this first hook part 217 held the mutual trip of 231a, by the reacting force that is produced behind this first elastomeric element 213 and second elastomeric element, 214 pressurizeds, hold the end 231a that colludes of 217b and this second hook part 231 to draw in the opposite direction the colluding of this first hook part 217 of mutual trip, thereby the pressure by this top board 23 should circuit board 25 to be tested presss from both sides to establish and is fixed on this loading plate 22.
Brought forward is described, and this circuit board 25 to be tested is provided with three button parts 252, and whether the tester can test these three button parts 252 can normal operation by these three pushbutton switches 222.Need remark additionally, whether normal for testing each functions of components that this circuit board 25 to be tested comprises these three button parts 252, testing tool for circuit board 2 of the present invention also comprises in order to the signal line that is connected to this circuit board 25 to be tested and this power-supply unit that circuit board 25 to be tested operates is provided, but this signal line and this power-supply unit are the device of the alternative setting of available circuit board test instrument, and for the testing tool for circuit board those skilled in the art need not can realize through professor, for avoiding fuzzy technical characterictic of the present invention place, so be not that literary composition is given unnecessary details.
In sum, testing tool for circuit board of the present invention when the thickness of circuit board to be tested changes, can pass through the position of the limiting section of this first hook part of adjustment, revises the spacing that this lower platen and this top board folder is established this circuit board to be tested.
The foregoing description only is illustrative principle of the present invention and effect thereof, but not is used to limit the present invention.Any those skilled in the art all can be under spirit of the present invention and category, and the foregoing description is modified and changed.Therefore, the scope of the present invention, claims are listed as the aforementioned.