CN212586499U

CN212586499U - PCB testing device

Info

Publication number: CN212586499U
Application number: CN202021010715.2U
Authority: CN
Inventors: 李延峰; 贾源岐; 贺园
Original assignee: Beijing Htdisplay Electronics Co ltd
Current assignee: Beijing Htdisplay Electronics Co ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-02-23
Anticipated expiration: 2030-06-04

Abstract

The utility model relates to a PCB board testing arrangement, including horizontal bottom plate, the bottom plate top is equipped with the clamp plate, bottom plate middle part both sides are equipped with the supporting shoe and articulate with the clamp plate, the clamp plate is equipped with the faller gill along its one end of rotating the direction, the faller gill runs through the clamp plate and links firmly rather than, the other end of clamp plate is equipped with the drive assembly who orders about faller gill lower extreme and support and lean on the bottom plate upper surface, drive assembly includes the thrust spring between clamp plate and the bottom plate, vertical screw rod is established to the thrust spring endotheca, screw rod lower extreme fixed connection bottom plate, the clamp plate upper end is equipped with the first through-hole corresponding with the screw rod, the first adjusting nut of first through-hole and threaded connection is worn to establish by the screw rod, the drive assembly outside. The testing device can conveniently and quickly clamp the socket of the PCB to be tested, and the testing efficiency is improved; the turnover protective cover can effectively protect the needle bank, and the needle bank can be conveniently and quickly exposed, so that the test work is convenient to carry out.

Description

PCB testing device

Technical Field

The utility model belongs to the technical field of the electronic equipment test technique and specifically relates to a PCB board testing arrangement is related to.

Background

After the PCB is produced, before the guide is soldered to the PCB, a test board is usually required to test whether the circuit in the PCB is normal, and in order to improve the efficiency, the conventional test method is to insert a plug of the test board into one end of the pin header, and then electrically connect the other end of the pin header to the PCB by using a test clip. After the test is finished, the test board needs to be taken down from the pin row, the pin row is exposed, and the exposed pin row is easy to be knocked, bent and damaged by external force when not in use. When testing the PCB, the existing testing device has the disadvantages of complex operation and low testing efficiency, and can not meet the requirement of batch testing.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a PCB board testing arrangement, the device centre gripping PCB board is easy and simple to handle, and efficiency of software testing is high, and economy is suitable for, can also effectively protect the faller gill through setting up the upset protection casing, the security that improve equipment used.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a PCB testing device comprises a horizontal bottom plate, a pressing plate opposite to the bottom plate is arranged above the bottom plate, supporting blocks are fixedly connected to two sides of the middle of the bottom plate, two sides of the pressing plate are respectively hinged to the supporting blocks opposite to the pressing plate, the pressing plate can vertically rotate along a hinged shaft of the supporting blocks, a needle bar is arranged at one end of the pressing plate along the rotating direction of the pressing plate, the needle bar penetrates through the pressing plate and is fixedly connected with the pressing plate, a driving assembly for driving the lower end of the needle bar to abut against the upper surface of the bottom plate is arranged at the other end of the pressing plate, the driving assembly comprises a thrust spring between the pressing plate and the bottom plate, a vertical screw rod is sleeved in the thrust spring, the lower end of the screw rod is fixedly connected with the bottom plate, a first through hole corresponding to the screw rod is arranged at the upper end of the pressing plate, the screw rod penetrates, the needle row above the pressing plate is also covered with a reversible protective cover.

Through adopting above-mentioned technical scheme, with the upper end of faller gill and the plug connection who surveys the board, put into the socket of PCB board between faller gill lower extreme and the bottom plate, under drive assembly's effect, make faller gill lower extreme and PCB board socket support and lean on, the faller gill will survey the board and be connected with the PCB board electricity that awaits measuring to realize the test of PCB board. The separating device can enable the pressing plate to rotate through the hinge shaft of the supporting block, so that the lower end of the pin row is separated from the upper surface of the bottom plate, a PCB (printed circuit board) socket is convenient to place, the separating device is unlocked and released after the PCB is placed, and the pressing plate rotates and enables the lower end of the pin row to be abutted against the PCB socket under the action of a thrust spring of the driving assembly; the protective cover which can be turned over is arranged, so that the needle bank can be effectively prevented from being damaged by external force, and the safe use of the testing device is protected.

The present invention may be further configured in a preferred embodiment as: the protection casing includes the cavity rectangle casing of a pair of relative setting, every casing one corner is articulated with the clamp plate that is close to faller gill one side, every the casing can be followed the lid and closed or open the direction rotation of faller gill, every the opening has been seted up respectively to the adjacent both sides on its rotation direction of casing edge, the opening just is relative with faller gill with casing inner chamber intercommunication.

Through adopting above-mentioned technical scheme, the casing can convenient and fast close the faller gill lid, can effectively avoid the faller gill to receive external force and damage, and when using the faller gill, again can convenient and fast's rotating housing exposes the faller gill, facilitates the use.

The present invention may be further configured in a preferred embodiment as: an annular protective frame is arranged on the periphery of the outer edge of the needle row above the pressing plate, and the width of the protective frame is matched with that of the inner cavity of the shell.

By adopting the technical scheme, when the shell covers the upper part of the needle row, the lower end of the covered shell is clamped with the protective frame, so that the stability and firmness of the cover of the shell are improved.

The present invention may be further configured in a preferred embodiment as: the separating device comprises a vertical connecting rod fixedly connected to the bottom plate, a second through hole corresponding to the connecting rod is formed in the pressing plate, an eccentric wheel is arranged above the second through hole, a groove is longitudinally formed in the eccentric wheel, the upper end of the connecting rod is embedded into the groove and hinged to the eccentric wheel, and a handle is arranged on the eccentric wheel on the side, opposite to the groove, of the groove.

Through adopting above-mentioned technical scheme, at initial state rotation eccentric wheel, the eccentric wheel pushes down the clamp plate, makes the clamp plate opposite side upwards lift to make faller gill lower extreme and bottom plate part, conveniently put PCB board socket between faller gill lower extreme and the bottom plate, realize that PCB board socket and the electric conductance of faller gill lower extreme are led to.

The present invention may be further configured in a preferred embodiment as: the eccentric wheel rotates by 0-190 degrees; the rotation angle of the eccentric wheel is more than 180 degrees, and the eccentric wheel is in a self-locking state.

Through the technical scheme, after the eccentric wheel rotates for more than 180 degrees in the initial state, the eccentric wheel passes through a critical point, the eccentric wheel continues to rotate, the handle is clamped on the upper surface of the pressing plate, and the eccentric wheel enters a self-locking state.

The present invention may be further configured in a preferred embodiment as: the lower end of the faller is also provided with a compression joint assembly used for compressing the PCB, the compression joint assembly comprises a faller at the lower end of the faller, a vertical guide rod is fixedly arranged on the faller, a guide hole corresponding to the guide rod is arranged on the pressure plate, the guide rod penetrates through the guide hole from bottom to top and is sleeved with a compression spring, and the top end of the guide rod is in threaded connection with a second adjusting nut; the needle plate is provided with a copper column corresponding to the lower end of the needle row, the copper column penetrates through the needle plate and is fixedly connected with the needle plate, the lower end of the needle plate is fixedly connected with conductive rubber, the conductive rubber is abutted against the lower end of the copper column, and the lower end of the needle row is abutted against the upper end of the copper column.

By adopting the technical scheme, the compression spring pulls the guide rod upwards, so that the copper column on the needle plate is always abutted against the lower end of the needle bank, the lower end of the copper column is electrically conducted with the conductive rubber, the PCB board socket to be tested below the needle plate is positioned between the conductive rubber and the bottom plate, after the separation device is released, the needle plate and the bottom plate tightly press the PCB board socket under the action of the thrust spring of the driving assembly, and the PCB board socket is electrically conducted with the lower end of the needle bank; the conductive rubber can adapt to different PCB board sockets, the lower end of the pin row does not need to correspond to the PCB board sockets one by one, and the adaptability of the testing device is better.

The present invention may be further configured in a preferred embodiment as: the guide bars are four and are evenly distributed on the outer edge of the needle plate.

Through adopting above-mentioned technical scheme, evenly distributed guide bar on the faller outer fringe can make the faller atress more even, and the faller lower extreme can keep the electric conduction with the copper post.

The present invention may be further configured in a preferred embodiment as: the first through hole and the second through hole are waist-shaped holes, and the length direction of the waist-shaped holes is perpendicular to the rotating axis of the pressing plate.

Through adopting above-mentioned technical scheme, when the clamp plate rotated with the articulated shaft of supporting shoe, because the waist type hole length direction of first through-hole is perpendicular with clamp plate pivoted axis, so first through-hole on the clamp plate can move along clamp plate direction of rotation on the screw rod, avoids the screw rod to block the rotation of clamp plate. Similarly, when the pressing plate rotates with the hinge shaft of the supporting block, the second through hole in the pressing plate can move on the connecting rod along the rotating direction of the pressing plate, so that the connecting rod is prevented from blocking the rotation of the pressing plate.

To sum up, the utility model discloses a following beneficial technological effect:

1. through setting up drive assembly, can make the clamp plate rotate with the articulated shaft of supporting shoe to can make faller gill lower extreme and bottom plate upper surface effectively support and lean on.

2. Through setting up the protection casing, can effectively protect the faller gill, avoid external force to cause the harm to the faller gill.

3. Through setting up separator, can convenient and fast make faller gill lower extreme and bottom plate part and locking, can be after separator unblock again, faller gill lower extreme can convenient and fast again support with PCB board socket and lean on.

4. Through setting up the crimping subassembly, can make the faller gill adapt to different PCB board sockets, improve testing arrangement's application scope.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the separating apparatus of the present invention during operation;

FIG. 3 is a schematic structural view of the needle row covered by the protective cover of the present invention;

fig. 4 is a schematic structural view of the eccentric wheel of the present invention;

fig. 5 is a schematic structural view of the needle plate of the present invention.

In the figure, 1, a bottom plate; 11. a support block; 2. pressing a plate; 21. a first through hole; 22. a second through hole; 23. a protective frame; 3. Arranging needles; 4. a drive assembly; 41. a thrust spring; 42. a screw; 43. a first adjusting nut; 5. A separation device; 51. a connecting rod; 52. an eccentric wheel; 521. a groove; 522. a handle; 523. a pin shaft; 6. a protective cover; 61. a housing; 611. an opening; 7. a crimping assembly; 71. a needle plate; 711. a copper pillar; 712. a conductive rubber; 72. a guide bar; 73. a compression spring; 74. a second adjusting nut.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

as shown in FIG. 1, a PCB testing device comprises a horizontal bottom plate 1, a pressing plate 2 opposite to the bottom plate 1 is arranged above the bottom plate 1, supporting blocks 11 are fixedly connected to two sides of the middle of the bottom plate 1, two sides of the pressing plate 2 are respectively hinged to the supporting blocks 11 opposite to the pressing plate 2, the pressing plate 2 can rotate up and down along a hinged shaft of the supporting blocks 11, one end of the pressing plate 2 along the rotating direction is provided with a needle row 3, the needle row 3 penetrates through the pressing plate 2 and is fixedly connected with the pressing plate 2, the other end of the pressing plate 2 is provided with a driving component 4 for driving the lower end of the needle row 3 to abut against the upper surface of the bottom plate 1, the driving component 4 comprises a thrust spring 41 between the pressing plate 2 and the bottom plate 1, the thrust spring 41 is internally sleeved with a vertical screw rod 42, the lower end of the screw rod 42 is fixedly connected with the bottom plate 1, the upper end, the elastic force of the thrust spring 41 can be adjusted according to actual conditions; the outside of the driving component 4 is also provided with a separating device 5 which can separate the lower end of the needle bank 3 from the surface of the bottom plate 1, and the needle bank 3 above the pressure plate 2 is also covered with a reversible protective cover 6.

The upper end of the pin row 3 is electrically connected with a plug of the test board, the PCB is placed between the lower end of the pin row 3 and the bottom plate 1, the lower end of the pin row 3 abuts against a socket of the PCB under the action of the driving component 4, and the pin row 3 is electrically connected with the test board and the PCB to be tested, so that the test of the PCB is realized. The separating device 5 can enable the pressing plate 2 to rotate and be locked through the hinge shaft of the supporting block 11, when the separating device 5 is locked, the lower end of the pin row 3 is separated from the upper surface of the bottom plate 1, a PCB is conveniently placed in the pin row, after the PCB is placed, the separating device 5 is unlocked, and under the action of the thrust spring 41 of the driving assembly 4, the pressing plate 2 rotates and enables the lower end of the pin row 3 to be abutted against the socket of the PCB, so that the lower end of the pin row 3 is electrically communicated with the socket of the PCB; the protective cover 6 which can be turned over is arranged, so that the needle bank 3 can be effectively prevented from being damaged by external force, and the safe use of the testing device is protected.

The protective cover 6 of the embodiment includes a pair of hollow rectangular shells 61 arranged oppositely, one corner of each shell 61 is hinged to the pressing plate 2 near one side of the needle row 3, each shell 61 can rotate along the direction of covering or opening the needle row 3, two adjacent sides of each shell 61 along the rotation direction are respectively provided with an opening 611, and the openings 611 are communicated with the inner cavity of the shell 61 and are opposite to the needle row 3.

Can convenient and fast close 3 covers of faller gill through upset casing 61, can effectively avoid faller gill 3 to receive external damage, when using faller gill 3, again can convenient and fast's upset casing 61, expose faller gill 3, facilitate the use simultaneously.

In order to improve the stability and firmness of the covering of the shell 61, the annular protective frame 23 is circumferentially arranged on the outer edge of the faller gill 3 above the pressing plate 2, the width of the protective frame 23 is matched with the width of the inner cavity of the shell 61, and when the shell 61 covers the faller gill 3, the lower end of the covered shell 61 is clamped with the protective frame 23.

Fig. 3 is a schematic structural view of the needle row 3 covered by the protective cover 6.

As shown in fig. 1-4, the separating device 5 includes a vertical connecting rod 51 fixedly connected to the bottom plate 1, a second through hole 22 corresponding to the connecting rod 51 is provided on the pressure plate 2, an eccentric wheel 52 is provided above the second through hole 22, a groove 521 is longitudinally provided on the eccentric wheel 52, the upper end of the connecting rod 51 is embedded in the groove 521 and hinged to the eccentric wheel 52 through a pin 523, and a handle 522 is provided on the eccentric wheel 52 on the opposite side of the groove 521.

The rotating angle range of the eccentric wheel 52 is 0-190 degrees, the eccentric wheel 52 is rotated in the initial state, the critical point of the eccentric wheel 52 is 180 degrees, the rotating angle of the eccentric wheel 52 is larger than 180 degrees, so that the eccentric wheel 52 passes through the critical point, the eccentric wheel 52 continuously rotates, the handle 522 is clamped on the upper surface of the pressing plate 2, and the eccentric wheel 52 enters a self-locking state.

Get into the eccentric wheel 52 of auto-lock state and push down clamp plate 2, clamp plate 2 is rotatory with the articulated shaft of supporting shoe 11, clamp plate 2 opposite side then upwards lifts, thereby make 3 lower extremes of faller gill and bottom plate 1 part, at this moment, need not exerting the effort to clamp plate 2, can make 3 lower extremes of faller gill and bottom plate 1 separate always, can be very convenient like this put the PCB board between 3 lower extremes of faller gill and bottom plate 1, then release 5 unblocks of separator, make eccentric wheel 52 resume initial state, under drive assembly 4's thrust spring 41 effect, 3 lower extremes of faller gill and PCB board socket support and lean on, realize that the electric conductance of PCB board socket and 3 lower extremes of faller gill leads to.

As shown in fig. 3 and 5, the lower end of the pin row 3 is further provided with a crimping assembly 7 for pressing the PCB, the crimping assembly includes a pin plate 71 at the lower end of the pin row 3, a vertical guide rod 72 is fixedly arranged on the pin plate 71, a guide hole (not shown in the figure) corresponding to the guide rod 72 is arranged on the pressure plate 2, the guide rod 72 penetrates through the guide hole from bottom to top and is sleeved with a compression spring 73, the top end of the guide rod 72 is in threaded connection with a second adjusting nut 74, and the upward lifting force of the pin plate 71 can be adjusted by adjusting the second adjusting nut 74, so that the pin plate 71 can be effectively abutted against the lower end of the pin row 3; in the facility example, four guide rods 72 are uniformly distributed on the outer edge of the needle plate 71, the guide rods 72 uniformly distributed on the outer edge of the needle plate 71 can ensure that the needle plate 71 is uniformly stressed, the needle plate 71 slides up and down smoothly, and the lower end of the faller 3 can be reliably abutted against the needle plate 71; the needle plate 71 is provided with a copper column 711 corresponding to the lower end of the needle row 3, the copper column 711 penetrates through the needle plate 71 and is fixedly connected with the needle plate 71, the lower end of the needle plate 71 is fixedly connected with a conductive rubber 712, the conductive rubber 712 is abutted against the lower end of the copper column 711, and the lower end of the needle row 3 is abutted against the upper end of the copper column 711, so that the lower end of the needle row 3 is effectively and electrically conducted with the conductive rubber 712.

Because the design needs, PCB board socket linewidth interval is usually not unified, through setting up crimping subassembly 7, can make conductive rubber 712 adapt to different PCB board sockets, need not to make 3 lower extremes of faller gill and PCB board socket one-to-one, this problem of fine solution of conductive rubber 712, makes testing arrangement adaptability better.

The compression spring 73 pulls the guide rod 72 upwards to ensure that the copper column 711 on the needle plate 71 is reliably abutted with the lower end of the pin row 3 all the time, the copper column 711 is connected with the conductive rubber 712, the PCB socket to be tested below the needle plate 71 is positioned below the conductive rubber 712, and after the separating device 5 is unlocked, the PCB socket is tightly pressed by the needle plate 71 and the bottom plate 1 under the action of the thrust spring 41 of the driving component 4 to ensure that the PCB socket is electrically communicated with the lower end of the pin row 3.

In this embodiment, the first through hole 21 and the second through hole 22 are both kidney-shaped holes, and the length direction of the kidney-shaped holes is perpendicular to the axis of rotation of the platen 2. When the pressing plate 2 rotates with the hinge shaft of the supporting block 11, since the length direction of the waist-shaped hole of the first through hole 21 is perpendicular to the axis of the rotation of the pressing plate 2, the first through hole 21 on the pressing plate 2 can move on the screw rod 42 along the rotation direction of the pressing plate 2, and the screw rod 42 is prevented from blocking the rotation of the pressing plate 2. Also, when the pressing plate 2 rotates with the hinge shaft of the support block 11, the second through hole 22 of the pressing plate 2 may move on the link 51 in the rotation direction of the pressing plate 2, preventing the link 51 from blocking the rotation of the pressing plate 2.

The working process of the utility model is as follows: when a PCB needs to be tested, firstly, the shell 61 is turned over, the pin row 3 is exposed, then the test board is inserted to the upper end of the pin row 3, the eccentric wheel 52 is rotated and enters a self-locking state, the press plate 2 positioned on one side of the eccentric wheel 52 rotates downwards, the needle plate 71 on the other side of the press plate 2 is separated from the bottom plate 1, the PCB to be tested is placed between the conductive rubber 712 and the bottom plate 1 at the moment, then the eccentric wheel 52 is unlocked, the eccentric wheel 52 is enabled to recover to an initial state, the press plate 2 at one end of the pin row 3 rotates downwards under the action of the thrust spring 41, the lower end of the pin row 3 is enabled to be electrically connected with the conductive rubber 712 through the copper column 711, and therefore the test board is electrically connected with the PCB to be tested, and therefore the PCB can. After the PCB is tested, the eccentric wheel 52 is rotated and self-locked, then the PCB is taken out from between the needle plate 71 and the bottom plate 1, the test board is pulled out from the upper end of the pin bank 3, and finally the shell 61 is turned over to cover the pin bank 3.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a PCB board testing arrangement which characterized in that: the needle bar mechanism comprises a horizontal bottom plate (1), a pressing plate (2) opposite to the bottom plate is arranged above the bottom plate (1), supporting blocks (11) are fixedly connected to two sides of the middle of the bottom plate (1), two sides of the pressing plate (2) are respectively hinged to the supporting blocks (11) opposite to the pressing plate, the pressing plate (2) can rotate up and down along a hinged shaft of the supporting blocks (11), a needle bar (3) is arranged at one end of the pressing plate (2) along the rotating direction of the pressing plate, the needle bar (3) penetrates through the pressing plate (2) and is fixedly connected with the pressing plate, a driving assembly (4) for driving the lower end of the needle bar (3) to abut against the upper surface of the bottom plate (1) is arranged at the other end of the pressing plate (2), the driving assembly (4) comprises a thrust spring (41) between the pressing plate (2) and the bottom plate (1), a vertical screw rod (42, the utility model discloses a needle bar, including clamp plate (2), clamp plate (2) upper end is equipped with first through-hole (21) corresponding with screw rod (42), first through-hole (21) and the first adjusting nut of threaded connection (43) are worn to establish by screw rod (42), drive assembly (4) outside still is equipped with and makes needle bar (3) lower extreme break away from separator (5) on bottom plate (1) surface, still cover protection casing (6) that can overturn on needle bar (3) of clamp plate (2) top.

2. The PCB testing device of claim 1, wherein the protective cover (6) comprises a pair of hollow rectangular shells (61) which are oppositely arranged, one corner of each shell (61) is hinged with the pressing plate (2) close to one side of the pin row (3), each shell (61) can rotate along the direction of covering or opening the pin row (3), two adjacent sides of each shell (61) along the rotation direction are respectively provided with an opening (611), and the openings (611) are communicated with the inner cavity of the shell (61) and are opposite to the pin row (3).

3. The PCB testing device of claim 2, wherein an annular protective frame (23) is arranged on the periphery of the pin row (3) above the pressure plate (2) in the circumferential direction, and the width of the protective frame (23) is matched with the width of the inner cavity of the shell (61).

4. The PCB testing device according to claim 1, wherein the separating device (5) comprises a vertical connecting rod (51) fixedly connected to the bottom plate (1), a second through hole (22) corresponding to the connecting rod (51) is formed in the pressure plate (2), an eccentric wheel (52) is arranged above the second through hole (22), a groove (521) is longitudinally formed in the eccentric wheel (52), the upper end of the connecting rod (51) is embedded into the groove (521) and hinged to the eccentric wheel (52), and a handle (522) is arranged on the eccentric wheel (52) on the opposite side of the groove (521).

5. The PCB testing device of claim 4, wherein the eccentric wheel (52) is rotated by 0-190 °; the rotation angle of the eccentric wheel (52) is more than 180 degrees, and the eccentric wheel is in a self-locking state.

6. The PCB testing device according to claim 1, wherein the lower end of the pin row (3) is further provided with a crimping component (7) for pressing the PCB, the crimping component comprises a pin plate (71) at the lower end of the pin row (3), a vertical guide rod (72) is fixedly arranged on the pin plate (71), a guide hole corresponding to the guide rod (72) is arranged on the pressing plate (2), the guide rod (72) penetrates through the guide hole from bottom to top and is sleeved with a compression spring (73), and the top end of the guide rod (72) is in threaded connection with a second adjusting nut (74); be equipped with on faller (71) with the corresponding copper post (711) of faller (3) lower extreme, copper post (711) run through faller (71) and with faller (71) fixed connection, faller (71) lower extreme fixed connection conductive rubber (712), conductive rubber (712) and copper post (711) lower extreme support and lean on, faller (3) lower extreme supports with copper post (711) upper end and supports and lean on.

7. The PCB testing device of claim 6, wherein the guide bars (72) are four and are uniformly distributed on the outer edge of the pin plate (71).

8. The PCB testing device of claim 1, wherein the first through hole (21) and the second through hole (22) are waist-shaped holes, and the length direction of the waist-shaped holes is perpendicular to the axis of rotation of the pressure plate (2).