CN215066780U

CN215066780U - PCB testing jig

Info

Publication number: CN215066780U
Application number: CN202120069361.7U
Authority: CN
Inventors: 滕跃; 李杰栋
Original assignee: Suzhou Jieyuefei Electronic Technology Co ltd
Current assignee: Suzhou Jieyuefei Electronic Technology Co ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-12-07
Anticipated expiration: 2031-01-12

Abstract

The utility model discloses a PCB testing jig, which comprises a fixed bottom plate, a damping device, a driving mechanism and a lifting device, wherein the upper end of the fixed bottom plate is provided with the damping device, and the lower end of the driving mechanism is provided with the lifting device, the utility model discloses a first motor, a second motor, a first rotating shaft, a second rotating shaft, a first transmission case and a second transmission case are arranged, so that the utility model can move a connecting plate up and down along the direction of a screw rod along with the rotation of the first motor and the second motor, thereby reducing the uneven stress caused by the contact of a testing probe and the PCB due to overlarge manual operation force, further damaging the PCB and the probe, improving the testing efficiency of the PCB, reducing the damage to the PCB or the probe when the probe contacts the PCB through arranging a sponge pad, a support plate, an elastic column and a spring, prolonging the service life of the probe, effectively protecting the PCB, the detection quality of the PCB is improved.

Description

PCB testing jig

Technical Field

The utility model belongs to the technical field of the circuit board test, concretely relates to PCB board test fixture.

Background

The electrical performance test is a key link in the PCB manufacturing process, the scrap rate can be effectively reduced by improving the test technology, and the product yield is improved. The electrical performance test mainly tests the conductivity and insulation of the substrate circuit, which is commonly called open circuit and short circuit. At present, a plurality of common test jigs of PCB factories are used for electrical performance test, namely, probes are arranged on the test jigs according to the test point positions of a circuit board and then are connected with corresponding test points of the PCB. Because the test operation in the prior art is manual press-down operation, the test probe and the PCB are usually damaged due to too high press-down speed and too high force.

The existing PCB testing jig has the following problems: test operation among the prior art is manual formula operation of pushing down, so can generally make the atress uneven because pushing down at a rate too fast, the too big test probe that leads to of power and PCB board contact to easily cause the damage to PCB board and probe, influence the efficiency of software testing of PCB board, be unfavorable for people to use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a PCB board test fixture to the test operation among the prior art who proposes in solving above-mentioned background is manual formula operation of pushing down, so can be usually because pushing down speed is too fast, and the too big test probe that leads to of exerting oneself and PCB board contact messenger atress inequality, thereby easily causes the problem of damage to PCB board and probe.

In order to achieve the above object, the utility model provides a following technical scheme: a PCB testing jig comprises a fixed bottom plate, a damping device, a driving mechanism and a lifting device, wherein the damping device is arranged at the upper end of the fixed bottom plate, the lifting device is arranged at the lower end of the driving mechanism, the lifting device comprises a second connecting sleeve, a second vertical plate, a first connecting sleeve, a first lead screw, a connecting block, a second lead screw, a first rotating sleeve, a second rotating sleeve, a connecting plate, a fixed plate and a probe, the first vertical plate is arranged on one side of the upper end of the fixed bottom plate, the second vertical plate is arranged on the other side of the upper end of the fixed bottom plate, the first connecting sleeve is arranged on the outer wall of the first lead screw, the connecting block is fixedly connected with the left end of the connecting block, the connecting plate is fixedly connected with the left end of the connecting block, one side of the probe penetrates through the fixed plate and is detachably connected with the connecting plate, the first rotating sleeve is movably connected with the lower end of the first lead screw, the second connecting sleeve is arranged on the outer wall of the second lead screw, the lower end of the second screw rod is movably connected with a second rotating sleeve.

Preferably, the damping device comprises a spongy cushion, a supporting plate, an elastic column, a spring and a placing table, the spongy cushion is arranged inside the placing table, the supporting plate is arranged at the lower end of the spongy cushion, the supporting plate is fixedly connected to the upper end of the elastic column, and the spring is arranged on the outer wall of the elastic column.

Preferably, actuating mechanism includes first motor, second motor, first transmission case, second pivot, first pivot and roof, the first motor of upper end fixedly connected with of roof, the right-hand member transmission of first motor is connected with first pivot, first pivot transmission is connected with first transmission case, the left end of first motor is provided with the second motor, the left end transmission of second motor is connected with first pivot, the left end transmission of first pivot is connected with the second transmission case.

Preferably, the first transmission case comprises a first gear and a first driven wheel, the first gear and the first driven wheel are meshed, the second transmission case comprises a second gear and a second driven wheel, and the second gear and the second driven wheel are meshed.

Preferably, a stopper is disposed between the first motor and the second motor.

Preferably, one side of the first screw rod and one side of the second screw rod penetrate through the top plate.

Compared with the prior art, the utility model provides a PCB board test fixture possesses following beneficial effect:

1. the utility model discloses a set up first motor, second motor, first pivot, second pivot, first transmission case and second transmission case, make this novel can be along with the rotation of first motor and second motor with the connecting plate along lead screw direction up-and-down motion, reduced manual operation and used the too big test probe that leads to and PCB board contact messenger atress inequality to cause the damage to PCB board and probe, improved the efficiency of software testing of PCB board.

2. The utility model discloses a set up foam-rubber cushion, backup pad, elasticity post and spring, to the harm that PCB board or probe caused when having reduced the probe contact PCB board, improved the life of probe, the effectual PCB board of having protected improves the detection quality of PCB board.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 is a schematic structural view of a PCB testing jig according to the present invention;

fig. 2 is a cross-sectional view of the PCB testing jig of the present invention;

fig. 3 is a cross-sectional view of the PCB testing fixture according to another view angle of the present invention;

fig. 4 is a partially enlarged schematic view of a portion a in fig. 3 according to the present invention;

in the figure: 1. fixing the bottom plate; 2. a damping device; 3. a drive mechanism; 4. a lifting device; 21. a sponge cushion; 22. a support plate; 23. an elastic column; 24. a spring; 25. a placing table; 31. a first motor; 32. a second motor; 33. a stopper; 34. a first transmission case; 35. a second transmission case; 36. a second rotating shaft; 37. a first rotating shaft; 38. a top plate; 41. a second connecting sleeve; 42. a second vertical plate; 43. a first vertical plate; 44. a first connecting sleeve; 45. a first lead screw; 46. connecting blocks; 47. a second lead screw; 48. a first rotating sleeve; 49. a second rotating sleeve; 50. a connecting plate; 51. a fixing plate; 52. a probe; 341. a first gear; 342. a first driven wheel; 351. a second gear; 352. a second driven wheel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a PCB testing jig, including a fixing base plate 1, a damping device 2, a driving mechanism 3 and a lifting device 4, wherein the damping device 2 is disposed on the upper end of the fixing base plate 1, the lifting device 4 is disposed on the lower end of the driving mechanism 3, the lifting device 4 includes a second connecting sleeve 41, a second vertical plate 42, a first vertical plate 43, a first connecting sleeve 44, a first screw rod 45, a connecting block 46, a second screw rod 47, a first rotating sleeve 48, a second rotating sleeve 49, a connecting plate 50, a fixing plate 51 and a probe 52, the first vertical plate 43 is disposed on one side of the upper end of the fixing base plate 1, the second vertical plate 42 is disposed on the other side of the upper end of the fixing base plate, the first connecting sleeve 44 is disposed on the outer wall of the first screw rod 45, the first connecting sleeve 44 is convenient for fixing the connecting block 46, the connecting block 46 is fixedly connected to the left end of the first connecting sleeve 44, the connecting plate 50 is fixedly connected to the connecting block 50, one side of the probe 52 penetrates through the fixing plate 51 to be detachably connected with the connecting plate 50, the probe 52 is in contact with the PCB to detect the PCB, the lower end of the first lead screw 45 is movably connected with a first rotating sleeve 48, the outer wall of the second lead screw 47 is provided with a second connecting sleeve 41, and the lower end of the second lead screw 47 is movably connected with a second rotating sleeve 49.

Damping device 2 includes foam-rubber cushion 21, backup pad 22, elastic column 23, spring 24 and places platform 25, and the inside of placing platform 25 is provided with foam-rubber cushion 21, is used for placing the PCB board on the foam-rubber cushion 21, reduces the harm to the PCB board, and the lower extreme of foam-rubber cushion 21 is provided with backup pad 22, the upper end fixedly connected with backup pad 22 of elastic column 23, and the outer wall of elastic column 23 is provided with spring 24, and spring 24 plays absorbing effect.

The driving mechanism 3 includes a first motor 31, a second motor 32, a first transmission box 34, a second transmission box 35, a second rotating shaft 36, a first rotating shaft 37 and a top plate 38, the upper end of the top plate 38 is fixedly connected with the first motor 31, the right end of the first motor 31 is in transmission connection with the first rotating shaft 37, the first rotating shaft 37 is in transmission connection with the first transmission box 34, the left end of the first motor 31 is provided with the second motor 32, the left end of the second motor 32 is in transmission connection with the first rotating shaft 37, the left end of the first rotating shaft 37 is in transmission connection with the second transmission box 35, the first rotating shaft 37 is driven by the first motor 31, so as to drive the first gear 341, and further drive the driven wheel 342, and further drive the first lead screw 45 to rotate, and cooperate with the second motor 32 to drive the second lead screw 47, so as to control the ascending and descending of the connecting plate 50, and further control the ascending and descending of the probe 52.

Specifically, the first transmission case 34 includes a first gear 341 and a first driven wheel 342, a first rotating shaft 37 is fixedly connected to an inner wall of the first gear 341, the first gear 341 is engaged with the first driven wheel 342, the second transmission case 35 includes a second gear 351 and a second driven wheel 352, the second gear 351 is engaged with the second driven wheel 352, a stopper 33 is disposed between the first motor 31 and the second motor 32, and one side of the first lead screw 45 and one side of the second lead screw 47 penetrate through the top plate 38.

The utility model discloses a theory of operation and use flow: the utility model discloses after installing, place the PCB board on foam-rubber cushion 21, then open first motor 31 and second motor 32, drive first pivot 37 through first motor 31, thereby drive first gear 341, and then drive from driving wheel 342, and then drive first lead screw 45 and rotate, cooperation second motor 32 drives second lead screw 47, and then can control the rising decline of connecting plate 50, and then can control the rising and the decline of probe 52, make the PCB board contact on probe 52 and the foam-rubber cushion 21, thereby can detect the PCB board.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a PCB board test fixture, includes PMKD (1), damping device (2), actuating mechanism (3) and elevating gear (4), its characterized in that: the damping device (2) is arranged at the upper end of the fixed base plate (1), the lifting device (4) is arranged at the lower end of the driving mechanism (3), the lifting device (4) comprises a second connecting sleeve (41), a second vertical plate (42), a first vertical plate (43), a first connecting sleeve (44), a first lead screw (45), a connecting block (46), a second lead screw (47), a first rotating sleeve (48), a second rotating sleeve (49), a connecting plate (50), a fixing plate (51) and a probe (52), the first vertical plate (43) is arranged at the upper end of one side of the fixed base plate (1), the second vertical plate (42) is arranged at the other side of the fixed base plate, the first connecting sleeve (44) is arranged on the outer wall of the first lead screw (45), the connecting block (46) is fixedly connected to the left end of the first connecting sleeve (44), the connecting plate (50) is fixedly connected to the left end of the connecting block (46), one side of the probe (52) penetrates through the fixing plate (51) and is detachably connected with the connecting plate (50), the lower end of the first screw rod (45) is movably connected with a first rotating sleeve (48), the outer wall of the second screw rod (47) is provided with a second connecting sleeve (41), and the lower end of the second screw rod (47) is movably connected with a second rotating sleeve (49).

2. The PCB testing jig of claim 1, wherein: the damping device (2) comprises a spongy cushion (21), a supporting plate (22), an elastic column (23), a spring (24) and a placing table (25), the spongy cushion (21) is arranged inside the placing table (25), the supporting plate (22) is arranged at the lower end of the spongy cushion (21), the supporting plate (22) is fixedly connected to the upper end of the elastic column (23), and the spring (24) is arranged on the outer wall of the elastic column (23).

3. The PCB testing jig of claim 1, wherein: actuating mechanism (3) include first motor (31), second motor (32), first transmission case (34), second transmission case (35), second pivot (36), first pivot (37) and roof (38), the first motor (31) of upper end fixedly connected with of roof (38), the right-hand member transmission of first motor (31) is connected with first pivot (37), first pivot (37) transmission is connected with first transmission case (34), the left end of first motor (31) is provided with second motor (32), the left end transmission of second motor (32) is connected with first pivot (37), the left end transmission of first pivot (37) is connected with second transmission case (35).

4. The PCB testing jig of claim 3, wherein: the first gear box (34) includes a first gear (341) and a first driven wheel (342), the first gear (341) and the first driven wheel (342) are engaged, the second gear box (35) includes a second gear (351) and a second driven wheel (352), and the second gear (351) and the second driven wheel (352) are engaged.

5. The PCB testing jig of claim 3, wherein: a stop block (33) is arranged between the first motor (31) and the second motor (32).

6. The PCB testing jig of claim 1, wherein: one side of the first screw rod (45) and one side of the second screw rod (47) penetrate through the top plate (38).