PCB testing tool

Abstract

The utility model discloses a PCB board testing tool comprising a pedestal, a testing structure and a first driving structure, the testing structure is arranged on the pedestal, the testing structure comprises a pallet and a needle plate which are oppositely arranged in a first direction, the pallet is provided with a placing cavity for placing a plurality of PCB boards to be tested, and the first driving structure is arranged on the pedestal. The probe plate is provided with a plurality of probes, and at least one of the tray and the probe plate is movably arranged along a first direction relative to the base so as to be close to or far away from the other one, so that the probes of the probe plate can be in contact with test points on the PCB to form a test loop or separated from the test points to form an open circuit; the first driving structure is in driving connection with at least one of the tray and the needle plate so as to drive the tray and the needle plate to move in the first direction. According to the technical scheme of the utility model, a plurality of PCBs can be tested at the same time, the efficiency is high, and the labor is saved at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB board testing, in particular to a PCB board testing tool. Background Art

[0002] After production, PCB boards usually need to be powered on for testing to see if their performance meets the requirements. Currently, when testing PCB boards, they are usually hot-swapped manually while powered on, but hot-swapped boards may burn out and are inefficient. Utility Model Content

[0003] The main purpose of the utility model is to provide a PCB board testing tool, aiming to provide an automatic plug-in and pull-out PCB board testing tool.

[0004] In order to achieve the above-mentioned purpose, the utility model proposes a PCB board testing tool, comprising:

[0005] Base;

[0006] A test structure is arranged on the base, the test structure includes a tray and a needle board which are arranged opposite to each other in a first direction, the tray has a placement cavity for placing a plurality of PCB boards to be tested, the needle board has a plurality of probes, at least one of the tray and the needle board is movably arranged relative to the base along the first direction to approach or move away from the other, so that the probes of the needle board can contact with the test points on the PCB to form a test loop, or separate to form a short circuit; and,

[0007] The first driving structure is drivingly connected to at least one of the tray and the needle plate to drive the tray to move along a first direction.

[0008] Optionally, the first driving structure is drivingly connected to the tray to drive the tray to move along a first direction.

[0009] Optionally, the first driving structure includes:

[0010] A pressing plate is movably disposed on the base along a first direction and is located on a side of the tray away from the needle plate, wherein the pressing plate can drive the tray to move along the first direction within its movable stroke; and

[0011] The first driving member is drivingly connected to the pressing plate to drive the pressing plate to move along a first direction.

[0012] Optionally, a plurality of mounting grooves are provided on a side of the tray away from the needle plate, the plurality of mounting grooves constitute the placement cavity, and a plurality of avoidance holes communicating with the corresponding mounting grooves are provided on a side of the tray facing the needle plate.

[0013] Optionally, the first driving structure further comprises a reset member disposed between the tray and the needle plate, and the reset member is used to drive the tray to move in a direction away from the needle plate when the pressure plate moves in a direction away from the tray.

[0014] Optionally, a testing area and a mounting area distributed along the second direction are formed on a side of the base facing the first driving structure;

[0015] The test structure is movably disposed on the base along the second direction, and can reach the test area and the installation area within its movable range along the second direction;

[0016] The first driving structure is disposed in the testing area, and is used to drive at least one of the tray and the needle plate to move along a first direction when the testing structure reaches the testing area.

[0017] Optionally, the PCB board testing tool further includes a second driving structure, which is disposed on the base and is drivingly connected to the testing structure to drive the testing structure to move along a second direction.

[0018] Optionally, the base has a receiving groove which is open at one end close to the needle plate, and the second driving structure is installed in the receiving groove.

[0019] Optionally, the second driving structure includes a slider slidably disposed in the receiving groove along a second direction, and a second driving member disposed in the receiving groove for driving the slider to move along the second direction;

[0020] The sliding block is detachably connected to the needle plate via a detachable structure.

[0021] Optionally, the detachable structure includes a concave portion and a convex portion which are respectively arranged on the sliding block and the needle plate and extend along the first direction, and the concave portion and the convex portion are plug-fitted.

[0022] Optionally, a thread supporting plate is arranged on a side of the needle plate away from the tray, and an installation space is defined between the needle plate and the thread supporting plate.

[0023] Optionally, the PCB board testing tooling further comprises a flexible barrier curtain, one end of which is fixed to the base, and the other end of which is fixed to the test structure, so that when the test structure moves to the test area, the flexible barrier curtain can block the receiving groove and the installation area.

[0024] In the technical solution of the utility model, the test structure includes a tray and a needle plate which are arranged relative to each other in a first direction, the tray having a placement cavity for placing a plurality of PCB boards to be tested, the needle plate having a plurality of probes, at least one of the tray and the needle plate being movably arranged relative to the base along the first direction, and a first driving structure being drivingly connected to at least one of the tray and the needle plate to drive it to move along the first direction; in this way, when testing is required, the plurality of PCB boards to be tested are placed in the placement cavity, and at least one of the tray and the needle plate is driven to move by the first driving structure so that the test points on the PCB contact the probes on the needle plate, thereby forming a test loop, thereby detecting the performance of the PCB board; after the detection is completed, the tray and the needle plate are driven to separate by the first driving structure, and the overall structure can test a plurality of PCB boards at the same time, which is efficient and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 A three-dimensional structural schematic diagram of an embodiment of a PCB board testing tool provided by the utility model;

[0027] Figure 2 for Figure 1 Schematic diagram of the planar structure of the PCB board test fixture;

[0028] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0029] Figure 4 for Figure 1 Enlarged structural diagram at B in the middle.

[0030] Description of Figure Numbers:

[0031]

[0032]

[0033] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0037] After production, PCB boards usually need to be powered on for testing to see if their performance meets the requirements. Currently, when testing PCB boards, they are usually hot-swapped manually while powered on, but hot-swapped boards may burn out and are inefficient.

[0038] In order to solve the above problems, the utility model proposes a PCB board testing tool, which aims to provide an automatic plug-in and pull-out PCB board testing tool. Figures 1 to 4 The present invention is a schematic structural diagram of an embodiment of a PCB board testing tool provided by the present invention.

[0039] Please refer to Figures 1 to 3The utility model proposes a PCB board testing tool 100, comprising a base 1, a test structure and a first driving structure 4, wherein the test structure is arranged on the base 1, and the test structure comprises a tray 2 and a needle board 3 which are arranged opposite to each other in a first direction, wherein the tray 2 has a placement cavity for placing a plurality of PCB boards to be tested, and the needle board 3 has a plurality of probes, and at least one of the tray 2 and the needle board 3 is movably arranged relative to the base 1 along the first direction to approach or move away from the other, so that the probes of the needle board 3 can contact with the test points on the PCB board to form a test loop, or separate to form a short circuit; the first driving structure 4 is drivingly connected to at least one of the tray 2 and the needle board 3 to drive it to move along the first direction.

[0040] In the technical solution of the utility model, the test structure includes a tray 2 and a needle plate 3 which are arranged relative to each other in a first direction, the tray 2 has a placement cavity for placing multiple PCB boards to be tested, the needle plate 3 has multiple probes, at least one of the tray 2 and the needle plate 3 is movably arranged relative to the base 1 along the first direction, and the first driving structure 4 is drivingly connected to at least one of the tray 2 and the needle plate 3 to drive it to move along the first direction; in this way, when testing is required, the multiple PCB boards to be tested are placed in the placement cavity, and at least one of the tray 2 and the needle plate 3 is driven to move by the first driving structure 4, so that the test points on the PCB contact with the probes on the needle plate 3, thereby forming a test loop, so as to detect the performance of the PCB board, and after the detection is completed, the tray 2 and the needle plate 3 are driven to separate by the first driving structure 4, and the overall structure can test multiple PCB boards at the same time, which is efficient and labor-saving.

[0041] Among them, the first driving structure 4 can drive the tray 2 to move, and can also drive the needle plate 3 to move, and can also drive the tray 2 and the needle plate 3 to move at the same time; in this embodiment, the first driving structure 4 drives the tray 2 to drive the tray 2 to move along the first direction; in this way, since the probe on the needle plate 3 needs to be connected to the wire, the test is performed by driving the tray 2 to move, thereby reducing the possibility of wire entanglement.

[0042] Furthermore, the first driving structure 4 has various driving modes for the pressing plate 41, which may be direct driving or indirect driving. Figures 1 to 3In this embodiment, the first driving structure 4 includes a pressing plate 41 and a first driving member 42. The pressing plate 41 is movably arranged on the base 1 along a first direction and is located on a side of the tray 2 away from the needle plate 3. The pressing plate 41 can drive the tray 2 to move along the first direction within its movable stroke. The first driving member 42 is driven to be connected to the pressing plate 41 to drive the pressing plate 41 to move along the first direction. In this way, when testing is required, after the PCB board to be tested is placed in the placement cavity, the pressing plate 41 is driven by the first driving member 42 to move toward the tray 2. After contacting the tray 2, it continues to move until the test point on the PCB board contacts the probe of the needle plate 3 to form a test circuit for testing.

[0043] The first driving member 42 may be a cylinder, an oil cylinder or a lead screw structure.

[0044] Specifically, in this embodiment, the first driving member 42 includes two cylinders, and the output shafts of the two cylinders are respectively connected to two ends of the pressing plate 41, so that the force on the pressing plate 41 is more balanced.

[0045] Furthermore, in order to enable the two cylinders to move synchronously, the output shaft ends of the two cylinders can be connected by a high-strength connecting piece, such as an aluminum plate, an iron plate, etc.

[0046] Further, in the case where the tray 2 is driven to move by the pressing plate 41, in order to enable the tray 2 to move in a direction away from the needle plate 3, in this embodiment, please refer to Figure 2 The first driving structure 4 also includes a reset member 43 arranged between the tray 2 and the needle plate 3, and the reset member 43 is used to drive the tray 2 to move in a direction away from the needle plate 3 when the pressure plate 41 moves in a direction away from the tray 2.

[0047] The present design does not limit the specific form of the reset member 43, which may be an elastic structure such as a spring, or a magnetic structure in which like charges repel each other.

[0048] In order to ensure that the PCB board on the tray 2 can remain stable during the movement of the tray 2, in the present embodiment, a plurality of mounting grooves 21 are provided on a side of the tray 2 away from the needle plate 3, and the plurality of mounting grooves 21 constitute the placement cavity, and a plurality of avoidance holes 22 connected with the corresponding mounting grooves 21 are provided on the side of the tray 2 facing the needle plate 3; in this way, the PCB board can be positioned through the mounting grooves 21, and after the PCB board is placed in the mounting grooves 21, the pressing plate 41 moves to contact with the tray 2 under the driving action of the first driving member 42, and can press the PCB board placed in the mounting groove 21, without the need to fix the PCB board by a fixing structure, and the probe can contact the test point on the PCB board located in the mounting groove 21 through the avoidance holes 22 for testing.

[0049] It is understandable that the first driving structure 4 will hinder the installation of the PCB board in the placement cavity. In order to facilitate the installation of the operator, in this embodiment, please refer to Figure 3 , the base 1 is formed with a test area 11 and an installation area 12 distributed along the second direction on one side facing the first driving structure 4; the test structure is movably arranged on the base 1 along the second direction, and can reach the test area 11 and the installation area 12 within its movable travel along the second direction; the first driving structure 4 is arranged in the test area 11, and is used to drive at least one of the tray 2 and the needle plate 3 to move along the first direction when the test structure reaches the test area 11. In this way, when in use, the test structure is moved to the installation area 12, and the PCB board can be easily installed on the tray 2 without the obstruction of the first driving structure 4. After the installation is completed, the test structure can be slid along the second direction to the test area 11. The present design is not limited to this. In another embodiment, the distance between the first driving structure 4 and the tray 2 can be made larger to leave enough operating space, but in this way, the movable travel of the first driving structure 4 is longer, and the overall structure occupies a larger space.

[0050] In order to increase the degree of automation and save more labor, the PCB board testing tool 100 also includes a second driving structure 5, which is arranged on the base 1 and is drivingly connected to the testing structure to drive the testing structure to move along the second direction.

[0051] In this embodiment, the base 1 has an opening at one end of the base 1 close to the needle plate 3. The receiving groove 13 can be used to accommodate electronic components used to test the PCB board, which can play a certain protective role, and the second driving structure 5 can be installed in the receiving groove 13, which makes rational use of space and makes the overall structural layout more compact.

[0052] Furthermore, due to the existence of the needle plate 3 and the tray 2, it is troublesome to repair the electronic components inside the receiving groove 13. Therefore, in this embodiment, please refer to Figure 3 The second driving structure 5 includes a slider 51 slidably disposed in the receiving groove 13 along the second direction, and a second driving member 52 disposed in the receiving groove 13 for driving the slider 51 to move along the second direction; the slider 51 is detachably connected to the needle plate 3 through a detachable structure 6. In this way, when maintenance is required, the needle plate 3 can be removed from the slider 51.

[0053] The second driving member 52 may be a cylinder, an electric push rod or a lead screw structure, which is not limited in the embodiments of the present utility model.

[0054] Further, to improve the efficiency of disassembly and installation, please refer to Figure 4 The detachable structure 6 includes a recessed portion 61 and a convex portion 62 which are respectively arranged on the slider 51 and the needle plate 3 and extend along the first direction. The recessed portion 61 and the convex portion 62 are plugged into each other. When disassembly is required, it is only necessary to lift the needle plate 3 in the first direction away from the slider 51, that is, upward, to complete the disassembly. When installing, it can be directly plugged in. When the slider 51 moves along the second direction, the recessed portion 61 and the convex portion 62 will not fall off, and the needle plate 3 can follow the movement in the second direction.

[0055] It is understandable that multiple probes will result in more wires connecting the probes. In order to reduce the possibility of wire entanglement and damage during movement, in the present embodiment, a wire support plate 31 is provided on the side of the needle plate 3 away from the tray 2, and an installation space is defined between the needle plate 3 and the wire support plate 31; in this way, part of the wire can be fixed in the installation space, and when the needle plate 3 moves, the wire support plate follows the movement, and the movement of the wire is within a controllable range, is not easily damaged, and the overall structure is simpler, making it more convenient to subsequently inspect and repair the electronic components in the accommodating slot 13.

[0056] When the needle plate 3 moves from the installation area 12 to the test area 11, the portion of the receiving groove 13 corresponding to the installation area 12 will be exposed, which may easily lead to the entry of foreign matter, and the hands of the staff may easily enter the electric control area by mistake. Therefore, in the present embodiment, the PCB board test fixture 100 also includes a flexible barrier curtain, one end of which is fixed to the base 1, and the other end is fixed to the test structure, so that when the test structure moves to the test area 11, the flexible barrier curtain can block the receiving groove 13 and the installation area 12; in this way, when the test structure moves to the test area 11, the flexible barrier curtain stretches to close the corresponding receiving groove 13 to prevent foreign matter from entering, and when the test structure moves toward the installation area 12, the flexible barrier curtain can shrink and will not affect the movement of the test structure.

[0057] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A PCB board testing tool, characterized in that: include: Base; A test structure is arranged on the base, the test structure includes a tray and a needle board which are arranged opposite to each other in a first direction, the tray has a placement cavity for placing a plurality of PCB boards to be tested, the needle board has a plurality of probes, at least one of the tray and the needle board is movably arranged relative to the base along the first direction to approach or move away from the other, so that the probes of the needle board can contact with the test points on the PCB to form a test loop, or separate to form a short circuit; and, The first driving structure is drivingly connected to at least one of the tray and the needle plate to drive the tray to move along a first direction.

2. The PCB board testing tool as claimed in claim 1, characterized in that: The first driving structure is drivingly connected to the tray to drive the tray to move along a first direction.

3. The PCB board testing tool as claimed in claim 2, characterized in that: The first driving structure comprises: A pressing plate is movably disposed on the base along a first direction and is located on a side of the tray away from the needle plate, wherein the pressing plate can drive the tray to move along the first direction within its movable stroke; and The first driving member is drivingly connected to the pressing plate to drive the pressing plate to move along a first direction.

4. The PCB board testing tool as claimed in claim 3, characterized in that: A plurality of mounting grooves are provided on a side of the tray away from the needle plate, and the plurality of mounting grooves constitute the placement cavity. A plurality of avoidance holes communicating with the corresponding mounting grooves are provided on a side of the tray facing the needle plate.

5. The PCB board testing tool as claimed in claim 3, characterized in that: The first driving structure further includes a reset member disposed between the tray and the needle plate, and the reset member is used to drive the tray to move in a direction away from the needle plate when the pressure plate moves in a direction away from the tray.

6. The PCB board testing tool as claimed in claim 1, characterized in that: A testing area and a mounting area distributed along a second direction are formed on a side of the base facing the first driving structure; The test structure is movably disposed on the base along the second direction, and can reach the test area and the installation area within its movable range along the second direction; The first driving structure is disposed in the testing area, and is used to drive at least one of the tray and the needle plate to move along a first direction when the testing structure reaches the testing area.

7. The PCB board testing tool as claimed in claim 6, characterized in that: The PCB board testing tool also includes a second driving structure, which is arranged on the base and is drivingly connected to the testing structure to drive the testing structure to move along a second direction.

8. The PCB board testing tool as claimed in claim 7, characterized in that: The base has a receiving groove which is open at one end close to the needle plate, and the second driving structure is installed in the receiving groove.

9. The PCB board testing tool as claimed in claim 8, characterized in that: The second driving structure includes a slider slidably disposed in the receiving groove along a second direction, and a second driving member disposed in the receiving groove for driving the slider to move along the second direction; The sliding block is detachably connected to the needle plate via a detachable structure.

10. The PCB board testing tool as claimed in claim 9, characterized in that: The detachable structure comprises a concave portion and a convex portion which are respectively arranged on the slider and the needle plate and extend along a first direction, and the concave portion and the convex portion are plug-fitted.

11. The PCB board testing tool as claimed in claim 7, characterized in that: A thread supporting plate is arranged on one side of the needle plate away from the tray, and an installation space is defined between the needle plate and the thread supporting plate.

12. The PCB board testing tool as claimed in claim 8, characterized in that: The PCB board testing tool also includes a flexible barrier curtain, one end of which is fixed to the base, and the other end is fixed to the test structure, so that when the test structure moves to the test area, the flexible barrier curtain can block the receiving groove and the installation area.

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