CN214845635U

CN214845635U - PCB testing device

Info

Publication number: CN214845635U
Application number: CN202121505590.5U
Authority: CN
Inventors: 康海广
Original assignee: Suzhou Yourong Electronics Co ltd
Current assignee: Suzhou Yourong Electronics Co ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2021-11-23
Anticipated expiration: 2031-07-02

Abstract

The utility model discloses a PCB board testing arrangement, including the base plate, be equipped with the fixture that is used for the clamping PCB board on the base plate, fixture's top is equipped with the detection mechanism that is used for detecting the PCB board. The clamping mechanism comprises vertical plates symmetrically arranged on the base plate, the upper ends of the vertical plates are jointly provided with a reference plate, the inner sides of the vertical plates are respectively provided with a movable plate which can move up and down under the driving of a driving piece, and a clamping space for clamping the PCB is defined between the movable plate and the reference plate. The detection mechanism comprises a probe seat, a plurality of test probes are distributed at the lower end of the probe seat, and the upper end of the probe seat is connected with a driving motor for driving the probe seat to move up and down. The reference plate is provided with a plurality of limiting through holes matched with the test probes, and the lower ends of the test probes penetrate into the limiting through holes. The utility model discloses a testing arrangement has realized that the PCB board detects the high unity who detects the face, guarantees the test probe and detects the stable contact of face.

Description

PCB testing device

Technical Field

The utility model relates to a PCB board detects technical field, especially relates to a PCB board testing arrangement.

Background

The PCB is also called a PCB and is a carrier for electrical connection of electronic components. In the PCB manufacturing process, it is necessary to test the electrical performance and electrical connection of electronic components to check the production defects and the yield of the components. The testing device mostly adopts the testing probe to detect, usually, the driving mechanism drives the testing probe to press down for a fixed distance to contact the surface to be detected of the PCB, but the height of the surface to be detected of the PCB is difficult to ensure to be consistent when the PCB is clamped by the existing testing device, so that the testing probe cannot contact the surface to be detected or the contact is too early to cause the bending and the fracture of the testing probe when the testing probe presses down for the fixed distance.

Disclosure of Invention

In order to overcome the defects, the utility model aims to provide a PCB testing device has realized the high unity that waits to detect the face of PCB board, guarantees the test probe and waits to detect the stable contact of face.

In order to achieve the above purpose, the utility model discloses a technical scheme is: the PCB testing device comprises a substrate, wherein a clamping mechanism for clamping a PCB is arranged on the substrate, and a detection mechanism for detecting the PCB is arranged above the clamping mechanism. The clamping mechanism comprises vertical plates symmetrically arranged on the base plate, a reference plate is arranged at the upper ends of the vertical plates, moving plates driven by a driving piece to move up and down are arranged on the inner sides of the vertical plates, and a clamping space for clamping the PCB is defined between the moving plates and the reference plate. The detection mechanism comprises a probe seat, a plurality of test probes are distributed at the lower end of the probe seat, and the upper end of the probe seat is connected with a driving motor for driving the probe seat to move up and down. The reference plate is provided with a plurality of limiting through holes matched with the test probes, and the lower ends of the test probes penetrate into the limiting through holes.

When the PCB clamping device is used, the to-be-detected surface of the PCB is upward, the PCB is placed in the clamping space, and the moving plate is driven to move upwards until the to-be-detected surface of the PCB abuts against the lower end face of the reference plate; and starting the driving motor, moving the probe seat downwards, and driving the test probe to move downwards along the limiting hole until the test probe penetrates through the limiting hole and contacts the surface to be detected of the PCB.

The beneficial effects of the utility model reside in that: the lower end face of the reference plate forms a reference face against which a to-be-detected face of the PCB abuts through the arrangement of the reference plate, so that the high uniformity of the to-be-detected face of the PCB is ensured; meanwhile, the limiting hole for the test probe to pass through is formed in the reference plate, so that the movement of the test probe can be limited, the test probe is prevented from deviating, and the stable contact between the test probe and the to-be-detected surface of the PCB is guaranteed.

Further, the driving part comprises a rotary disc positioned on the substrate, a screw rod is threaded through the axis of the rotary disc, and the upper end of the screw rod is connected with the moving plate. When the turntable rotates, the screw rod moves up and down along the turntable, and then the movable plate is driven to move up and down.

Further, the upper end of the base plate is provided with a placing groove for placing the rotary table, one side of the base plate is provided with a notch communicated with the placing groove, and the rotary table is rotatably arranged in the placing groove and can partially extend out of the notch. The rotary table is rotated outside the base plate through the notch, and convenience in operation is improved.

Further, the inboard of riser is equipped with the confession the fluting of stepping down that the screw rod was placed, the lower extreme of base plate be equipped with the screw rod match and with the screw thread through groove of standing groove intercommunication, the screw rod passes in proper order screw thread through groove, standing groove, stepping down the fluting and with the movable plate is connected.

Further, waist-shaped holes distributed along the vertical direction are symmetrically formed in the moving plate, and screws locked with the vertical plates penetrate through the waist-shaped holes. The waist-shaped holes symmetrically arranged can limit the vertical movement of the moving plate, and the moving heights of the two ends of the moving plate are prevented from being inconsistent.

Further, a connecting clamping hook is arranged in the middle of the lower end of the moving plate, the screw comprises a screw body, and a clamping portion fixedly clamped with the connecting clamping hook is arranged at the upper end of the screw body.

Further, a guide assembly is further arranged between the probe seat and the reference plate, the guide assembly comprises guide sleeves symmetrically arranged on the reference plate, movable guide rods are arranged in the guide sleeves, the upper ends of the guide rods are fixedly connected with the probe seat, springs are sleeved on the guide rods, and two ends of each spring respectively abut against the guide sleeves and the probe seat.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural view of a clamping mechanism according to an embodiment of the present invention;

fig. 3 is a cut-away schematic view of a clamping mechanism according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the vertical plate and the reference plate according to the embodiment of the present invention.

In the figure:

1-a substrate; 11-placing a groove; 12-a notch; 13-threaded through grooves; 2-a clamping mechanism; 21-standing a plate; 211-abdicating and slotting; 22-a reference plate; 221-limiting hole; 23-moving the board; 231-connecting hooks; 232-kidney shaped hole; 233-screws; 3-a detection mechanism; 31-a probe seat; 32-a test probe; 33-a drive motor; 4-a turntable; 5-a screw; 51-screw body; 52-an engaging portion; 61-a guide sleeve; 62-a guide bar; 63-spring.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Examples

Referring to fig. 1-4, the utility model discloses a PCB board testing arrangement, including base plate 1, be equipped with fixture 2 that is used for the clamping PCB board on the base plate 1, fixture 2's top is equipped with detection mechanism 3 that is used for detecting the PCB board. The clamping mechanism 2 comprises vertical plates 21 symmetrically arranged on the base plate 1, a reference plate 22 is arranged at the upper ends of the vertical plates 21, moving plates 23 driven by a driving piece to move up and down are arranged on the inner sides of the vertical plates 21, and a clamping space for clamping the PCB is defined between the moving plates 23 and the reference plate 22. The detection mechanism 3 comprises a probe seat 31, a plurality of test probes 32 are distributed at the lower end of the probe seat 31, and the upper end of the probe seat 31 is connected with a driving motor 33 for driving the probe seat to move up and down. The reference plate 22 is provided with a plurality of limiting through holes 221 matched with the test probes 32, and the lower ends of the test probes 32 penetrate into the limiting through holes 221.

When the PCB clamping device is used, the to-be-detected surface of the PCB is upward, the PCB is placed in the clamping space, and the moving plate is driven to move upwards until the to-be-detected surface of the PCB abuts against the lower end face of the reference plate; and starting the driving motor, moving the probe seat 23 downwards, and driving the test probe 32 to move downwards along the limiting hole 221 until the test probe 32 passes through the limiting hole 221 and contacts the to-be-detected surface of the PCB. The lower end face of the reference plate 22 forms a reference face for the surface to be detected of the PCB to abut against by arranging the reference plate 22, so that the high uniformity of the surface to be detected of the PCB is ensured; meanwhile, the limit hole 221 for the test probe 32 to pass through is formed in the reference plate 22, so that the movement of the test probe 32 can be limited, the test probe 32 is prevented from deviating, and the test probe 32 is guaranteed to be in stable contact with the to-be-detected surface of the PCB.

In this embodiment, referring to fig. 3, the driving member includes a rotating disc 4 located on the base plate 1, a screw 5 is threaded through the axis of the rotating disc 4, and the upper end of the screw 5 is connected to the moving plate 23. When the turntable 4 rotates, the screw 5 moves up and down along the turntable 4, and further drives the moving plate 23 to move up and down.

The mounting structure of driving piece is as follows: a placing groove 11 for placing the turntable 4 is formed in the upper end of the base plate 1, and a notch 12 communicated with the placing groove 11 is formed in the side surface of the base plate 11. When the rotating disc 4 is positioned in the placing groove 11, the rotating disc 4 can partially extend out of the gap 12. The lower end of the base plate 1 is provided with a threaded through groove 13 communicated with the placing groove 11 and matched with the screw rod 5, and the threaded through groove 13 and the placing groove 11 are coaxially arranged. The inner side of the vertical plate 21 is provided with a yielding groove 211 for placing the screw 5.

The screw rod 5 comprises a screw rod body 51 which sequentially penetrates through the threaded through groove 13, the placing groove 11 and the abdicating groove 211, a clamping part 52 is arranged at the upper end of the screw rod body 51, and a connecting clamping hook 231 fixedly clamped with the clamping part 52 is arranged in the middle of the lower end of the moving plate 23.

When the PCB is clamped, the turntable 4 is rotated, the screw body 51 moves upwards along with the turntable, and the clamping portion 52 is driven to push the connecting hook 231 and the moving plate 23 to move upwards until the upper end of the PCB is attached to the reference plate 22; when the PCB is disassembled, the rotating disc 4 is rotated reversely, the screw body 51 moves downwards, and the engaging portion 52 drives the connecting hook 231 to move downwards synchronously.

In order to ensure the moving stability of the moving plate 23, waist-shaped holes 232 distributed along the vertical direction are symmetrically arranged on the moving plate 23, and screws 233 locked with the vertical plate 21 penetrate through the waist-shaped holes 232. The waist-shaped holes 232 which are symmetrically arranged can limit the vertical movement of the moving plate 23, and prevent the two ends of the moving plate 23 from moving to different heights.

In this embodiment, a guide assembly is further disposed between the probe seat 31 and the reference plate 22, the guide assembly includes guide sleeves 61 symmetrically disposed on the reference plate 22, a movable guide rod 62 is disposed in the guide sleeve 61, an upper end of the guide rod 62 is fixedly connected to the probe seat 31, a spring 63 is sleeved on the guide sleeve, and two ends of the spring 63 respectively abut against the guide sleeves 61 and the probe seat 31. The movement of the probe holder 31 can be guided by the engagement of the guide bar 62 with the guide sleeve 61.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. A PCB testing device comprises a substrate (1), wherein a clamping mechanism (2) for clamping a PCB is arranged on the substrate (1), and a detection mechanism (3) for detecting the PCB is arranged above the clamping mechanism (2); the method is characterized in that: the clamping mechanism (2) comprises vertical plates (21) symmetrically arranged on the base plate (1), a reference plate (22) is arranged at the upper ends of the vertical plates (21), moving plates (23) which can move up and down under the driving of a driving piece are arranged on the inner sides of the vertical plates (21), and a clamping space for clamping a PCB is defined between the moving plates (23) and the reference plate (22); the detection mechanism (3) comprises a probe seat (31), a plurality of test probes (32) are distributed at the lower end of the probe seat (31), and the upper end of the probe seat (31) is connected with a driving motor (33) for driving the probe seat to move up and down; the reference plate (22) is provided with a plurality of limiting through holes matched with the test probes (32), and the lower ends of the test probes (32) penetrate into the limiting through holes.

2. The PCB board testing device of claim 1, wherein: the driving piece comprises a rotary table (4) positioned on the base plate (1), a screw rod (5) is arranged at the axis of the rotary table (4) in a threaded penetrating mode, and the upper end of the screw rod (5) is connected with the movable plate (23).

3. The PCB board testing device of claim 2, wherein: the upper end of base plate (1) is equipped with the confession standing groove (11) that carousel (4) were placed, one side of base plate (1) be equipped with breach (12) of standing groove (11) intercommunication, carousel (4) rotationally set up in standing groove (11), and can partially stretch out breach (12).

4. The PCB board testing device of claim 3, wherein: the inboard of riser (21) is equipped with the confession the fluting (211) of stepping down that the screw rod was placed, the lower extreme of base plate (1) be equipped with the screw rod match and with screw thread through groove (13) of standing groove (11) intercommunication, screw rod (5) pass in proper order screw thread through groove (13), standing groove (11), step down fluting (211) and with the movable plate (23) is connected.

5. The PCB board testing device of claim 4, wherein: waist-shaped holes (232) distributed along the vertical direction are symmetrically formed in the moving plate (23), and screws (233) locked with the vertical plate (21) penetrate through the waist-shaped holes (232).

6. The PCB board testing device of claim 4, wherein: the middle part of the lower end of the moving plate (23) is provided with a connecting clamping hook (231), the screw rod (5) comprises a screw rod body (51), and the upper end of the screw rod body (51) is provided with a clamping part (52) fixedly clamped with the connecting clamping hook (231).

7. The PCB board testing device of any one of claims 1-6, wherein: still be equipped with the direction subassembly between probe seat (31) and benchmark board (22), the direction subassembly sets up including the symmetry uide bushing (61) on benchmark board (22), be equipped with guide bar (62) that can move in uide bushing (61), the upper end of guide bar (62) with probe seat (31) rigid coupling is equipped with spring (63) on it, the both ends of spring (63) support respectively and lean on uide bushing (61), probe seat (31).