CN201078758Y

CN201078758Y - Circuit board testing tool

Info

Publication number: CN201078758Y
Application number: CNU2007201265753U
Authority: CN
Inventors: 田焕堃
Original assignee: Tuofu Science & Tech Co Ltd
Current assignee: Tuofu Science & Tech Co Ltd
Priority date: 2007-08-27
Filing date: 2007-08-27
Publication date: 2008-06-25
Anticipated expiration: 2017-08-27

Abstract

A circuit board test fixture is provided, which comprises a base with a plurality of probe devices on the top part, an upper cover located at the upper part of the base, as well as a parallel linkage and a supporting mechanism respectively located on the base and at the two sides of the upper cover; wherein, the parallel linkage further comprises a first coupling lever and a second coupling lever in parallel which are respectively pivoted on the upper cover and the lateral side of the base, so as to facilitate the upper cover remaining horizontally pulling towards the rear upper part or covering on the base, when being pulled upwards, the upper cover can be stopped at the rear side of the first coupling lever through a coupling lever bracket and then can support the first coupling lever through a supporting mechanism, so as to avoid falling down to facilitate operators positioning the circuit board on the base top surface for testing and picking out; moreover, because the upper cover of the utility model can be kept in horizontally falling on the circuit board, each probe device can be forced evenly, so as to avoid fatigue elasticity of the compression spring due to the over stress of parts.

Description

Circuit board testing jig

Technical field

The utility model is a kind of proving installation of circuit board, refers to especially a kind ofly can make the evenly stressed and unrestricted circuit board testing jig of design direction of circuit board.

Background technology

In order to ensure the quality of dispatching from the factory of circuit board, after the printed wire of circuit board, need the loop of detection line whether normal, at this moment, circuit board need be detected on a measurement jig.On the whole existing circuit board testing jig comprises a base and a loam cake, show many probe units that comprise that the elasticity of compression, probe and lead are formed in base top surface cloth, each probe is placed through on the support plate, the circuit board that desire is detected places on the support plate, then loam cake is covered on electroplax top, makes contacting and detect on probe and the circuit board.

But the loam cake of available circuit board test tool is to be pivoted by the rear end with base, and therefore, loam cake is that the pivot with the rear end is axle center deflection, and so design easily derives a lot of defectives:

1. can to raise angle little and make circuit board be difficult for place and take out for loam cake.

2. when loam cake covered, nearly rear end at first touched circuit board and probe; Detection finishes when opening loam cake, and the nearly rear end of loam cake is left circuit board and probe at last, and in other words, the stressed inequality of the probe of whole detection tool easily causes the compression spring elastic fatigue that nearly rear end should the zone.

Moreover, because loam cake is to press down earlier with the rear end, therefore, when circuit board when wherein an edge has welded the RJ19 connector, connector must be placed this side of support plate front end, if place the rear end can influence the action that covers of loam cake, therefore, the Position Design of its loading plate and probe unit is restricted, and can't design with the pattern of more convenient manufacturing.

Therefore, existing necessity that further improvement is arranged as the circuit board testing jig of opening for axle center deflection with the rear end as the shell.

The utility model content

In order to improve above-mentioned defective, fundamental purpose of the present utility model is to provide a kind of loam cake level that can make to press down, and make each probe average force, and probe location designs unrestricted circuit board testing jig.

Based on above-mentioned purpose, major technique means of the present utility model comprise:

One base, its nearly rear end in both sides, top is respectively equipped with a up outstanding trace support, and the front side of this trace support is provided with a dip plane;

One loam cake is correspondingly positioned at the base top, and its front side is provided with the leader;

Two parallel linkage mechanisms, lay respectively at base and loam cake both sides, this parallel linkage comprises one first trace and one second trace, the two ends of this first trace are hubbed at base and loam cake side respectively, and be correspondingly positioned at trace support the place ahead, and a wherein end of second trace is hubbed at the loam cake side, and the other end then is hubbed at the nearly rear end of trace support side.

Implement after the above-mentioned technological means, the obtainable concrete benefit of the utility model is:

1. the utility model is by the design of parallel linkage, the application of force is up drawn back loam cake or down during drawing, first trace and second trace can up draw back loam cake and down cover, loam cake can on average be applied pressure on the examined circuit board (can make and prop up in each probe unit of circuit board below average force simultaneously), so can improve the defective of probe unit unbalance stress.

2. to draw back scope big for loam cake, can conveniently circuit board be inserted or take out.

Since loam cake maintenance level descend, even if so the outstanding connector of the edge of circuit board welding, no matter be to place front side or rear side all not to influence the action of loam cake, so the deviser can be according to conveniently being fabricated to design direction, the position adorned of designing probe in addition.

Description of drawings

Fig. 1 is that the utility model is installed on the front-view schematic diagram on the movable detecting box.

Fig. 2 is the schematic side view that the utility model is installed on movable detecting box.

Fig. 3 is a three-dimensional combination synoptic diagram of the present utility model.

Fig. 4 is a three-dimensional partial exploded view of the present utility model.

Fig. 5 is a local top cross-sectional view of the present utility model.

Fig. 6 is a schematic side view of the present utility model.

Fig. 7 is that the utility model loam cake is a schematic side view of drawing back state.

[primary clustering symbol description]

(10) movable detecting box (11) display

(12) testing agency (13) circuit board is planted and is distinguished

(14) monitor station (15) Power Supply Unit

(2) circuit board testing jig (21) base

(210) side plate (211) trace support

(212) dip plane (213) contact-making switch

(22) loam cake (23) handle

(25) support plate (30) parallel linkage

(32) first trace (320) pivot holes

(321) combined hole (33) second traces

(34) first pivots (35) second pivots

(36) pivot pipe (37) bolt

(38) tie rod (40) supporting mechanism

(41) cylinder pressure (42) crank

(43) link rotating shaft (44) pivot

(45) axostylus axostyle

Embodiment

See also shown in Fig. 1,2, circuit board testing jig 2 provided by the utility model is located on the movable detecting box 10, this movable detecting box 10 is hollow cabinet movably, an its inner display 11, a testing agency 12, circuit board plant district's 13, one monitor station 14 and Power Supply Unit 15 of installing, described circuit board testing jig 2 promptly is located at this monitor station of pulling out outward 14 end faces, whole movable detecting box 10 can be passed to workstation and detect, to shorten the time that circuit board is transported to circuit board testing jig 2.

See also shown in Figure 3, this circuit board testing jig 2 comprises a base 21, one loam cake 22, two parallel linkages 30 that are divided into loam cake 22 and base 21 both sides, and two be located at base 21 both sides respectively and with the supporting mechanism 40 of parallel linkage 30 interlocks, be provided with a handle that can Gong pull and support 23 in loam cake 22 front ends again, by this handle 23 with up pull-up or when down covering of loam cake 22, loam cake 22 is promptly by the design of two parallel linkage mechanisms 30, maintenance level when making loam cake 22 displacements, and loam cake 22 is up opened after the location, props up the position not toward tenesmus by supporting mechanism 40.

These base 21 end faces are provided with support plate 25 and are placed through a plurality of probe unit (not shown) of support plate 25 in addition, because probe unit and support plate 25 be known and have nothing to do in technology of the present invention, hold and do not give unnecessary details.

See also shown in Fig. 3-6, both sides, top of the present invention are respectively equipped with an outstanding side plate 210 up, medial surface in biside plate 210 nearly rear end is fixed a trace support 211 respectively, these trace support 211 front side upper semisections are made as a dip plane 212, this dip plane 212 is provided with two outstanding contact-making switches 213, described parallel linkage 30 comprises one first trace 32, one second trace 33, one first pivot 34 and one second pivot 35, wherein, this first pivot 34 is located at the side front end place of loam cake 22 and level is outstanding outwardly, and second pivot 35 is located at loam cake 22 side stage casings and level is outstanding outwardly, the two ends of described second trace 33 are hubbed at second pivot 35 respectively, the nearly rear end of trace support 211 sides, please consult shown in Figure 5ly simultaneously, the mode of being pivoted of second pivot 35 and trace support 211 is preferably establishes a pivot pipe 36 that is placed through the trace support 211 and second trace 33, one is connected and fixed on the tie rod 38 of two second traces 33, one is placed through the bolt 37 that pivot pipe 36 centers and spiral shell are located at center, tie rod 38 end.

Described first trace 32 two ends are respectively equipped with a pivot hole 320, a combined hole 321, and this pivot hole 320 places and is hubbed at first pivot 34, and combined hole 321 then is hubbed at side plate 210 inboards and links rotation with supporting mechanism 40.

This supporting mechanism 40 comprises a cylinder pressure 41 that is positioned at side plate 210 outsides, one is hubbed at the wherein crank 42 of an end of cylinder pressure 41, one is hubbed at cylinder pressure 41 other ends and is fixed in the axostylus axostyle 45 in side plate 210 outsides, this crank 42 has two ends, be respectively equipped with one in two ends towards the outstanding binding rotating shaft 43 of side plate 210, one towards the outstanding pivot 44 of cylinder pressure 41, this binding rotating shaft 43 places and is hubbed at side plate 210 and combines with the pivot hole 320 of first trace 32 with rotatable shape, to link rotating shaft 43 as shown in the figure and be made as square with combined hole 321 couplings, be placed through first trace, 32 perisporiums with a bolt again and spiral shell is located at and is linked rotating shaft 43 end face centers, when winning trace 32 deflections, drive crank 42 rotations by linking rotating shaft 43, again by Fig. 3, as can be known, first trace 32 is positioned at the place ahead of trace support 211 shown in 5.

Above-mentioned is composition member of the present utility model, and manner of execution is as back:

See also and Figure 6 shows that loam cake 22 of the present utility model is covered on the situation on the base 21, when desiring to raise loam cake 22, force in handle 23 as shown in Figure 7, loam cake 22 is passed toward the back upper place, drive first trace 31 and first trace, the 32 past back upper place beats of parallel linkage 30, this first trace 31 and first trace, 32 normality keeping parallelisms, loam cake 22 then maintenance levels, the dip plane 212 that up deflects to trace support 211 when first trace 31 promptly stops, touch contact-making switch 213 and make the warning lamp (not shown) with its electric connection luminous this moment, the operator promptly knows and has arrived the precalculated position, in addition, when first trace 31 up during beat, drive crank 42 simultaneously toward top deflection, and then prop up by cylinder pressure 41, to guarantee that first trace 31 and loam cake 22 be not arbitrarily toward deflect, the circuit board of fetch bit base 21 end faces safely, replace a circuit board that does not detect in base 21, on application of force drawing handle 23 then, pulling force can be so that first trace 31 and first trace 32 suppress in board top surface loam cake 22 levels toward the front lower place beats greater than the power of shoring of cylinder pressure 41.

From the above, the utility model is by the design of parallel linkage, can make the loam cake horizontal shift up draw back and down cover, loam cake can on average be applied pressure to (can make each probe unit average force of propping up) on the examined circuit board in the circuit board below, and loam cake to draw back scope big and can be convenient to storing/taking-up circuit board.

Claims

1. a circuit board testing jig is characterized in that, comprising:

2. circuit board testing jig as claimed in claim 1 is characterized in that, first trace and second trace are parallel each other.

3. circuit board testing jig as claimed in claim 1 or 2 is characterized in that, the two ends of this first trace are respectively equipped with a pivot hole, a combined hole, and this pivot hole is hubbed at the loam cake side, and combined hole then is hubbed at the side of base;

An if supporting mechanism, comprise a cylinder pressure, a crank, this crank wherein one is provided with an outstanding binding rotating shaft that is hubbed at chassis side, this binding rotating shaft and be placed through the pivot hole of first trace with rotatable shape, the other end of crank is provided with the outstanding pivot in the outside on one day, a wherein end of described cylinder pressure is hubbed at this pivot, and the other end then is hubbed at the side of base.

4. circuit board testing jig as claimed in claim 1 or 2 is characterized in that, is respectively equipped with an outstanding side plate up in the base top surface both sides, and the binding rotating shaft of described crank promptly places and is hubbed at the side plate perisporium, and a wherein end of cylinder pressure is hubbed at the side plate outer side edges.

5. circuit board testing jig as claimed in claim 3 is characterized in that, is respectively equipped with an outstanding side plate up in the base top surface both sides, and the binding rotating shaft of described crank promptly places and is hubbed at the side plate perisporium, and a wherein end of cylinder pressure is hubbed at the side plate outer side edges.

6. circuit board testing jig as claimed in claim 5 is characterized in that,

If a tie rod is fixedly linked on second trace of two parallel linkage mechanisms;

If two pivot pipes place respectively and are hubbed in the perisporium of the nearly rear end of two trace supports;

If two bolts are placed through the end face center that pivot pipe, second trace and spiral shell are located at tie rod respectively.

7. circuit board testing jig as claimed in claim 4 is characterized in that the dip plane of described trace support is provided with more than one contact-making switch.