CN217133223U

CN217133223U - Universal measuring clamp

Info

Publication number: CN217133223U
Application number: CN202220725531.7U
Authority: CN
Inventors: 朱凯
Original assignee: Flextronics Technology Suzhou Co Ltd
Current assignee: Flextronics Technology Suzhou Co Ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-08-05
Anticipated expiration: 2032-03-31

Abstract

The utility model discloses a general type measuring fixture, include: a needle board assembly contacting the circuit board and a fixture platform for fixing the needle board assembly. In this way, the utility model relates to a general type measuring fixture, through the disconnect-type structure with faller subassembly and anchor clamps platform, reduced anchor clamps development time and production test and traded anchor clamps time, make anchor clamps have scalability moreover, and can reuse, reduced anchor clamps maintenance and extension development cost once more by a wide margin.

Description

Universal measuring clamp

Technical Field

The utility model relates to a circuit board functional test technical field especially relates to a general type measuring fixture.

Background

The existing circuit board functional test fixtures are independently customized according to the type of a circuit board, namely, a test (FT) fixture with independent function is developed for one type of circuit board, but the fixture has the following technical defects:

a. the volume is large, the weight is heavy, a large amount of storage space needs to be occupied, and the product replacement test is inconvenient.

b. The development cost is high, and the development period is long.

c. The clip is inconvenient to expand and reuse.

d. The maintenance cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a general type measuring fixture, has advantages such as reliable performance height, location accuracy, compact structure, has extensive market prospect in circuit board function test equipment's application and popularization simultaneously.

In order to solve the technical problem, the utility model discloses a technical scheme be:

provided is a universal measuring jig, including: with the faller subassembly of circuit board contact and be used for installing the anchor clamps platform of faller subassembly, the anchor clamps platform includes mould, rotatory hold-down mechanism on platform base, platform side riser, the platform, platform side riser set up in the both sides of platform base, the mould on the platform with rotatory hold-down mechanism is connected, the faller subassembly can be dismantled with mould on platform base and the platform and be connected, rotatory hold-down mechanism with platform side riser swing joint to drive mould upset, translation and holding down on platform side riser on the platform for the faller subassembly compresses tightly the product and in order to detect.

In a preferred embodiment of the present invention, the rotary pressing mechanism comprises a turning guide groove, a translation guide groove, a pressing guide groove, a force arm, a rotary handle, a first guiding roller, a second guiding roller, a connecting roller, and a connecting guide groove,

the rotary handle and the second guide roller are rotatably arranged at two ends of one side of the force arm, the first guide roller is arranged on the rotary handle, the connecting roller is rotatably arranged at the side surface of the force arm, a connecting guide groove matched with the connecting roller is obliquely arranged on the side wall of the upper platform die, the connecting roller moves back and forth in the connecting guide groove, the overturning guide groove and the pressing guide groove are respectively arranged at two ends of the other side of the side plate of the platform, the bottom of the overturning guide groove is communicated with one end of the translation guide groove, the second guide roller moves back and forth in the overturning guide groove and the translation guide groove to complete overturning and translation of the force arm and the upper platform die in a matching manner, the first guide roller moves back and forth in the pressing guide groove to drive the power arm and the connecting roller to translate back and forth, the connecting roller and the connecting guide groove are matched to drive the upper die of the platform to vertically move downwards or upwards under the reaction force of the connecting guide groove, so that the upper needle plate on the upper die of the platform moves up and down along the movable guide pillar to press or loosen a product on the needle plate assembly.

In a preferred embodiment of the present invention, the rotation handle is rotatably disposed at a front portion of an outer side of the force arm through a rotation shaft, and the second guiding roller is rotatably disposed at a rear portion of the outer side of the force arm.

In a preferred embodiment of the present invention, one or more of the connecting rollers may be rotatably disposed at an inner side of the force arm, and the turning guide groove and the pressing guide groove may be disposed at an inner side of the platform side vertical plate.

In a preferred embodiment of the present invention, the turning guide groove and the pressing guide groove are arc-shaped structures.

In a preferred embodiment of the present invention, the translation guide groove is a horizontally disposed straight line structure.

In a preferred embodiment of the present invention, the needle plate assembly includes an upper needle plate, a transfer needle mold, a lower needle plate, a movable guide pillar, the upper needle plate is disposed on the platform, the lower needle plate is connected to the platform base, the transfer needle mold is disposed on the lower needle plate in a vertically floating manner, the upper needle plate is disposed on the lower needle plate and connected to a probe of a product to be detected and a detection device, the probe on the lower needle plate is movably connected to a guide hole on the transfer needle mold, the lower end of the movable guide pillar is connected to the transfer needle mold, and the upper portion of the movable guide pillar is movably connected to the upper needle plate so as to guide the lifting motion of the upper needle plate to a position.

In a preferred embodiment of the present invention, the upper needle plate is detachably disposed on the platform upper mold, and is positioned in butt joint with the platform upper mold through a positioning pin.

In a preferred embodiment of the present invention, the lower needle plate is detachably connected to the platform base, and is positioned by abutting the positioning pin to the platform base.

In a preferred embodiment of the present invention, the adapter pin mold is connected to the lower pin plate through a spring bolt in a floating manner.

The utility model has the advantages that: through the disconnect-type structure with faller subassembly and anchor clamps platform, reduced anchor clamps development time and production test and changed anchor clamps time, make anchor clamps have scalability moreover, and can reuse, reduced anchor clamps maintenance and expand development cost once more by a wide margin.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic structural diagram of a preferred embodiment of a universal measuring fixture according to the present invention;

fig. 2 is a schematic structural view of an overturning guide groove and a translation guide groove in a preferred embodiment of the universal measuring fixture of the present invention;

fig. 3 is a schematic structural view of a force arm in a preferred embodiment of a universal measuring fixture according to the present invention;

fig. 4 is a schematic structural diagram of a turning state of a preferred embodiment of a universal measuring fixture according to the present invention;

fig. 5 is a schematic structural view of a translation state of a preferred embodiment of a universal measuring fixture according to the present invention;

FIG. 6 is a schematic view of a pressing state structure of a preferred embodiment of the universal measuring fixture of the present invention

Fig. 7 is a schematic structural view of a needle plate assembly in a preferred embodiment of a universal measuring fixture of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-7, an embodiment of the present invention includes:

a universal measuring jig structurally comprises: with the faller subassembly of circuit board contact and be used for fixed faller subassembly's anchor clamps platform, only need change the faller subassembly when testing different PCBAs like this, just can be compatible to the faller subassembly of all PCBA sizes, it is more convenient, and can make mechanical structure and electrical structure between faller subassembly and the anchor clamps platform need to reach fast, link together steadily, change faller that can be quick comes the different PCBAs of test, in addition, because the price of faller subassembly is far less than the price of anchor clamps platform, so can also reduce the cost.

The fixture platform comprises a platform base 1, a platform side vertical plate 2, an upper platform mould 3 and a rotary pressing mechanism, wherein the platform side vertical plate is arranged on two sides of the top surface of the platform base, the upper platform mould is connected with the rotary pressing mechanism, and the rotary pressing mechanism is movably connected with the platform side vertical plate to drive the upper platform mould to overturn, translate and press down on the platform side vertical plate, so that an upper needle plate on the upper platform mould is overturned and pressed on a product.

The rotary pressing mechanism comprises an overturning guide groove 4, a translation guide groove 5, a pressing guide groove 6, a force arm 7, a rotary handle 8, a first guide roller 9, a second guide roller 10, a connecting roller 11 and a connecting guide groove 12. The overturning guide groove and the pressing guide groove are of arc structures, and the translation guide groove is of a linear structure horizontally arranged.

The rotary handle is rotatably arranged at the front part of the outer side of the force arm through a rotating shaft 18, the first guide roller is arranged on the rotary handle, the second guide roller is rotatably arranged at the rear part of the outer side of the force arm, one or more connecting rollers are rotatably arranged at the inner side of the force arm, a connecting guide groove matched with the connecting roller is obliquely arranged on the outer side wall of the upper die on the platform, and the connecting roller moves back and forth in the connecting guide groove,

the overturning guide groove and the translation guide groove are arranged at the rear part of the inner side of the platform side vertical plate, the bottom of the overturning guide groove is communicated with one end of the translation guide groove, the second guide roller moves back and forth in the overturning guide groove and the translation guide groove, the second guide roller is matched with the overturning guide groove to complete the arm of force and the overturning of the upper platform die, the second guide roller is matched with the translation guide groove to guide the translation of the arm of force and the upper platform die, the pressing guide groove is arranged at the front part of the inner side of the platform side vertical plate, the first guide roller moves back and forth in the pressing guide groove to drive the upper platform die to translate back and forth under the reaction force of the connecting guide groove, the connecting roller is matched with the connecting guide groove to drive the upper platform die to vertically move downwards or upwards under the reaction force of the connecting guide groove, so that the upper needle plate on the upper platform die moves up and down along the movable guide post, to compress or release the product on the transfer pin die.

When the clamp is closed for testing, the rotary handle is pressed downwards, and the second guide roller on the outer side surface of the force arm moves downwards along the overturning guide groove on the side vertical plate of the platform, so that the upper die of the platform is overturned; continuing to press the rotary handle downwards until the upper die of the platform rotates to reach the horizontal position and is closed with the platform base, at the moment, the second guide rolling shaft reaches the connecting position of the turnover guide groove and the translation guide groove from the upper end of the turnover guide groove, and the first guide rolling shaft on the outer side surface of the rotary handle rotates around the rotating shaft from the upper part to reach the position of the upper port of the lower pressing guide groove; and the upper needle plate, the transfer needle die and the lower needle plate in the needle plate assembly are vertically closed together along the movable guide post by generating a reaction force under the action of the forward movement of the connecting roller through the connecting guide slot to vertically press the upper die on the platform.

The clamp is opened by reversing the steps, the upper needle plate is vertically lifted to separate the upper needle plate from the adapter needle die, and then the upper die of the platform is rotated and opened so that the board can be taken and placed.

The needle plate assembly comprises an upper needle plate 13, an adapter needle die 14, a lower needle plate 15, a movable guide pillar 16 and a positioning pin 17, wherein probes connected and conducted with a product to be detected are arranged on the upper needle plate and the lower needle plate, basically no probe or a small number of probes are arranged on the upper needle plate, the probes are mainly arranged on the lower needle plate, and the tail ends of the probes are provided with electric appliance parts leading leads to the lower part.

The upper needle plate is detachably arranged on the upper platform mould through a fixing screw and is in butt joint positioning with the upper platform mould through the positioning pin, the lower needle plate is detachably connected with the platform base through a fixing screw, and is butted and positioned with the platform base through the positioning pin, the adapter pin die is arranged on the lower needle plate in a vertically floating way through a floating connecting structure such as a spring pin, the adapter pin die can be precisely butted and positioned with the lower needle plate through the positioning pin, the probe on the lower needle plate passes through the guide hole on the adapter pin die to play a role in guiding the probe and preventing the probe from deviating, when the upper needle plate is pressed downwards, the probes on the needle plate are connected and conducted with the product to form an electric loop, and the electric signals transferred from the needle plate are connected to the channel control card according to categories so as to be switched to different measuring instruments according to requirements during testing. The lower end of the movable guide pillar is connected with the adapter needle die, and the upper part of the movable guide pillar is movably connected with the upper needle plate so as to guide and limit the lifting motion of the upper needle plate.

Firstly, the upper pin plate, the lower pin plate and the clamp platform are of a separated structure, so that the clamp platform has good maintainability and expansibility, the extension of different circuit board tests can be realized by manufacturing the upper pin plate and the lower pin plate which are simple and low in cost, and the test period can be greatly shortened; secondly, the upper and lower needle plates and the clamp platform can be quickly and accurately assembled and installed through the positioning pins and the guide holes matched with the positioning pins, so that the assembly, disassembly and test efficiency is improved; and thirdly, through the adapter pin die and the movable guide pillar, the quick connection between the upper needle plate and the lower needle plate and a product can be realized, the problem of unstable contact caused by repeated plugging and pulling abrasion of the flat cable is avoided, and the operation and maintenance cost is reduced.

The use steps of the universal measuring clamp comprise:

(1) firstly, combining a clamp platform and a needle plate quickly:

(1.1) lifting and opening the upper platform mould, placing the upper needle plate on the bottom surface of the upper platform mould facing the platform base, placing the lower needle plate on the platform base, and inserting the positioning pins into the guide holes on the upper platform mould and the platform base, so that the upper needle plate, the lower needle plate and the clamp platform can be accurately assembled;

(1.2) fixing the lower needle plate and the platform base together by using four fixing screws, pressing down and closing the upper die on the platform, and respectively locking the four fixing screws of the upper needle plate into screw holes of the upper die on the corresponding platform to fix the upper needle plate and the upper die on the platform together.

Through the operation steps, the clamp platform and the needle plate assembly can be quickly combined together and the test is started; the needle plate can be detached by reversing the steps.

(2) The upper die of the platform is lifted up and opened, the product is placed on the adapter pin die, the upper die of the platform is pressed down and closed, so that the probe on the upper pin plate is contacted and conducted with a circuit on the product, and the probe on the lower pin plate is contacted and conducted with the circuit on the product, so that a loop is formed, and the product is detected.

The utility model relates to a general type measuring fixture's beneficial effect is:

1. the split structure of the needle plate assembly and the clamp platform reduces the clamp development time and the clamp replacement time of production test;

2. the clamp has expandability and can be repeatedly utilized, and the maintenance and re-expansion development costs of the clamp are greatly reduced.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.

Claims

1. A universal measuring fixture, comprising: with the faller subassembly of circuit board contact and be used for installing the anchor clamps platform of faller subassembly, the anchor clamps platform includes mould, rotatory hold-down mechanism on platform base, platform side riser, the platform, platform side riser set up in the both sides of platform base, the mould on the platform with rotatory hold-down mechanism is connected, the faller subassembly can be dismantled with mould on platform base and the platform and be connected, rotatory hold-down mechanism with platform side riser swing joint to drive mould upset, translation and holding down on platform side riser on the platform for the faller subassembly compresses tightly the product and in order to detect.

2. The universal measuring fixture as claimed in claim 1, wherein the rotary pressing mechanism comprises an overturning guide slot, a translational guide slot, a pressing guide slot, a force arm, a rotary handle, a first guiding roller, a second guiding roller, a connecting roller, and a connecting guide slot,

3. The universal measuring fixture as claimed in claim 2, wherein the rotary handle is rotatably disposed at a front portion of an outer side of the force arm via a rotation shaft, and the second guiding roller is rotatably disposed at a rear portion of the outer side of the force arm.

4. The universal measuring fixture as claimed in claim 2, wherein one or more of the connecting rollers are rotatably disposed inside the arm, and the turning guide groove and the pressing guide groove are disposed inside the platform side vertical plate.

5. The universal measuring fixture as claimed in claim 2, wherein said inversion channel and said hold-down channel are arcuate in configuration.

6. A universal measuring fixture according to claim 2, wherein the translation guide slots are horizontally disposed straight line structures.

7. The universal measuring fixture as claimed in claim 2, wherein the needle plate assembly comprises an upper needle plate, an adapter mold, a lower needle plate and a movable guide post, the upper needle plate is disposed on the upper mold of the platform, the lower needle plate is connected to the platform base, the adapter mold is disposed on the lower needle plate in a vertically floating manner, the upper needle plate and the lower needle plate are provided with probes connected to and conducted with the product to be measured and the measuring equipment, the probes on the lower needle plate are movably connected to the guide holes on the adapter mold, the lower end of the movable guide post is connected to the adapter mold, and the upper portion of the movable guide post is movably connected to the upper needle plate to guide and limit the lifting motion of the upper needle plate.

8. The universal measuring fixture as claimed in claim 7, wherein the upper needle plate is detachably disposed on the upper die of the platform, and is positioned in butt joint with the upper die of the platform by a positioning pin.

9. The universal measuring fixture as claimed in claim 7, wherein the lower needle plate is detachably connected with the platform base and is in butt joint with the platform base through a positioning pin.

10. The universal measuring fixture of claim 7, wherein said adapter die is floatingly coupled to said lower needle plate by spring bolts.