PCB (Printed Circuit Board) multi-linkage test fixture

Abstract

The utility model discloses a PCB multi-linkage test fixture, which belongs to the technical field of PCB testing, and comprises a workbench, the top end of the workbench is fixedly connected with four fixing blocks and a mounting seat, the mounting seat is located among the four fixing blocks, fixing rod assemblies are fixedly connected between the four fixing blocks and the outer surface of the mounting seat respectively, and the fixing rod assemblies are fixedly connected with the mounting seat. The circumferential surfaces of the four fixing rod assemblies are slidably connected with sliding plates, the circumferential surfaces of the four fixing rod assemblies are sleeved with spring assemblies, the four spring assemblies are located between the four sliding plates and the mounting base, the top ends of the four sliding plates are fixedly connected with probe assemblies, and the four probe assemblies correspond to the mounting base. A linkage mechanism is arranged on the workbench; according to the utility model, through one-time pushing of the linkage mechanism, the test fixture is linked with the four probe assemblies to simultaneously contact the PCB from four directions for testing, conduction of the PCB needing to be tested from multiple directions is more convenient, the structure is simple, and the production cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of PCB test, more specifically, relate to a kind of PCB board multiple linkage test fixture. BACKGROUND

[0002] PCB board is the abbreviation of printed circuit board, also called circuit board or electronic circuit board, PCB board is widely used in electronic equipment, such as computer, mobile phone, TV, sound, automobile electronics etc., the conductive material on PCB board is commonly used copper foil, it is covered on the surface of insulating material (usually double-sided or multilayer board), and circuit pattern is formed by chemical etching or mechanical processing.

[0003] At present, PCB board needs to be tested by test fixture when producing, common test fixture is to push probe to contact PCB board by air cylinder to realize conduction test, but most of existing test fixtures are one-way pushing probe by air cylinder, not only high cost, but also inconvenient when testing PCB board needing multiple direction conduction. UTILITY MODEL CONTENTS

[0004] 1. Technical problem to be solved

[0005] In view of the problems in the prior art, the utility model aims at providing a kind of PCB board multiple linkage test fixture, to solve the problems that most of test fixtures in prior art are one-way pushing probe by air cylinder, not only high cost, but also inconvenient when testing PCB board needing multiple direction conduction.

[0006] 2. Technical scheme

[0007] To solve the above problems, the utility model adopts the following technical scheme:

[0008] A kind of PCB board multiple linkage test fixture, including workbench, the top of the workbench is fixedly connected with four fixed blocks and mounting seat, and mounting seat is located between four fixed blocks, four fixed blocks are fixedly connected with fixed rod assembly between the outer surface of mounting seat, the circumferential surface of four fixed rod assemblies is slidably connected with slide plate, the circumferential surface of four fixed rod assemblies is sleeved with spring assembly, and four spring assemblies are located between four slide plates and mounting seat respectively, the top of four slide plates is fixedly connected with probe assembly, and four probe assemblies are corresponding with mounting seat, linkage mechanism is provided on the workbench, and the linkage mechanism is used to control four probe assemblies to move and contact PCB board for testing.

[0009] As one preferred scheme of the utility model, the linkage mechanism includes linkage plate, quick clamp, two roller shaft assemblies, two support shafts and two pressing claws, the linkage plate is fixedly connected to the outer surface of one slide plate, the quick clamp is fixedly connected to the top end of the workbench, and one end of the quick clamp is fixedly connected to one side end of the linkage plate, two roller shaft assemblies are respectively fixedly connected to the ends away from each other of two slide plates, and the two roller shaft assemblies correspond to the linkage plate, both support shafts are fixedly connected to the top end of the workbench, both pressing claws are respectively rotationally connected to the top end of two support shafts, and both pressing claws correspond to the linkage plate.

[0010] As one preferred scheme of the utility model, two inclined surfaces are arranged in the linkage plate, and two quick clamps are respectively in contact with the two inclined surfaces.

[0011] As one preferred scheme of the utility model, the top end of the workbench is fixedly connected with two limiting columns, limiting holes are formed in both pressing claws, and the top end of the two limiting columns respectively penetrates into the two limiting holes.

[0012] As one preferred scheme of the utility model, four slide bearing assemblies are fixedly connected in the four slide plates, and the four slide bearing assemblies are respectively slidably connected to the circumferential surface of the four fixed rod assemblies.

[0013] 3. Advantage

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] (1) In the scheme, when the PCB is tested, the PCB is placed on the mounting seat, the linkage mechanism links the four slide plates, the four slide plates are pushed at the same time by the linkage mechanism, so that the four probe assemblies contact the PCB on the mounting seat from four directions at the same time, realizing the conduction test of the PCB in multiple directions, the test fixture links the four probe assemblies to contact the PCB from four directions at the same time for testing by one pushing of the linkage mechanism, which is more convenient for the conduction test of the PCB from multiple directions, and the structure is simple and the production cost is low. DRAWINGS

[0016] Figure 1 It is the front view of the utility model;

[0017] Figure 2 It is the explosion drawing of the utility model;

[0018] Figure 3 It is the structure drawing of part of the mechanism in the utility model;

[0019] Figure 4 It is the structure drawing of the linkage mechanism in the utility model.

[0020] Explanation of reference numerals in the drawings:

[0021] 1, workbench; 2, fixed block; 3, mounting seat; 4, fixed rod assembly; 5, sliding plate; 6, spring assembly; 7, probe assembly; 81, linkage plate; 82, quick clamp; 83, roller assembly; 84, supporting shaft; 85, pressing jaw; 9, inclined surface; 10, limiting column; 11, limiting hole; 12, sliding bearing assembly. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be connected between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0025] Embodiment:

[0026] Please refer to Figures 1-4The utility model relates to a PCB board multi-link testing fixture, including workbench 1, the top fixedly connected with four fixed blocks 2 and mounting seat 3 of workbench 1, and mounting seat 3 is located between four fixed blocks 2, four fixed blocks 2 are fixedly connected with fixed link assembly 4 between the outer surface of mounting seat 3 respectively, the circumferential surface of four fixed link assembly 4 is slidably connected with slide plate 5, and four fixed link assembly 4 is all set with spring assembly 6, and four spring assembly 6 are located between four slide plate 5 and mounting seat 3 respectively, the top of four slide plate 5 is fixedly connected with probe assembly 7, and four probe assembly 7 all with mounting seat 3 correspond, be provided with linkage mechanism on workbench 1, and linkage mechanism is used to control four probe assembly 7 and move contact PCB board and carry out testing.

[0027] In the embodiment, when testing the PCB board, the PCB board is placed on the mounting seat 3 corresponding to the four probe assemblies 7, the linkage mechanism is used to push the four slide plates 5 close to each other, the four slide plates 5 slide on the four fixed link assemblies 4 and compress the four spring assemblies 6, and simultaneously drive the four probe assemblies 7 to move and contact the PCB board, the four probe assemblies 7 contact the PCB board from four directions respectively, and the on-off test is carried out through the line connection external device, when the PCB board test is completed and needs to be taken out, the linkage mechanism is reset to cancel the pushing of the four slide plates 5, the four fixed link assemblies 4 apply the elastic force to the four slide plates 5 respectively, so that the four slide plates 5 drive the four probe assemblies 7 to reset and move away from the PCB board, so that the PCB board can be taken out from the mounting seat 3, wherein the four slide plates 5 are limited to stop moving by the four fixed blocks 2 in the resetting process, and the four fixed blocks 2 prevent the four slide plates 5 from being separated from the four fixed link assemblies 4.

[0028] Specifically, the linkage mechanism includes a linkage plate 81, a quick clamp 82, two roller shaft assemblies 83, two support shafts 84 and two pressing jaws 85, the linkage plate 81 is fixedly connected to the outer surface of one slide plate 5, the quick clamp 82 is fixedly connected to the top end of the workbench 1, one end of the quick clamp 82 is fixedly connected to one side end of the linkage plate 81, the two roller shaft assemblies 83 are fixedly connected to the ends of the two slide plates 5 away from each other, the two roller shaft assemblies 83 correspond to the linkage plate 81, the two support shafts 84 are fixedly connected to the top end of the workbench 1, and the two pressing jaws 85 are rotatably connected to the top ends of the two support shafts 84, and the two pressing jaws 85 correspond to the linkage plate 81.

[0029] In the embodiment, the linkage plate 81 is pushed to move by the quick clamps 82, and the linkage plate 81 drives a sliding plate 5 to move. During the movement, the linkage plate 81 is in contact with the two roller shaft assemblies 83 through the inner wall, and gradually extrudes the two roller shaft assemblies 83, thereby pushing the two symmetrical sliding plates 5 to approach. At the same time, the movement of the linkage plate 81 gradually pushes the two pressing jaws 85, so that the two pressing jaws 85 rotate on the two supporting shafts 84, respectively. The two pressing jaws 85 extrude the last sliding plate 5 inward, and the four sliding plates 5 approach the mounting seat 3, thereby driving the four probe assemblies 7 to contact the PCB board from four directions for testing.

[0030] Specifically, the linkage plate 81 is provided with two inclined surfaces 9, and the two quick clamps 82 are in contact with the two inclined surfaces 9, respectively.

[0031] In the embodiment, the two inclined surfaces 9 are arranged on the symmetrical two side walls of the linkage plate 81 and are in contact with the two roller shaft assemblies 83, respectively. Thus, the linkage plate 81 can push the two roller shaft assemblies 83 to approach during the movement, so as to drive the two symmetrical sliding plates 5 to approach with the two probe assemblies 7.

[0032] Specifically, the top end of the workbench 1 is fixedly connected with two limiting columns 10, and the two pressing jaws 85 are each provided with a limiting hole 11, and the top ends of the two limiting columns 10 penetrate into the two limiting holes 11, respectively.

[0033] In the embodiment, the top ends of the two limiting columns 10 penetrate into the two limiting holes 11, respectively, so as to limit the rotation angle of the two pressing jaws 85, thereby preventing the excessive extrusion of the sliding plates 5 due to the too large rotation angle and affecting the contact between the probe assemblies 7 and the PCB board.

[0034] Specifically, the four sliding plates 5 are each fixedly connected with a sliding bearing assembly 12, and the four sliding bearing assemblies 12 are slidably connected to the circumferential surfaces of the four fixed rod assemblies 4, respectively.

[0035] In the embodiment, the four sliding plates 5 are slidably connected to the four fixed rod assemblies 4 through the four sliding bearing assemblies 12, and the four sliding bearing assemblies 12 reduce the friction between the four sliding plates 5 and the four fixed rod assemblies 4, so that the sliding of the four sliding plates 5 is more smooth.

[0036] Working principle: when testing the PCB, the PCB is placed on the mounting seat 3 corresponding to the four probe assemblies 7, the linkage plate 81 is moved by the quick clamp 82, the linkage plate 81 drives a sliding plate 5 to move, the linkage plate 81 contacts the two roller assemblies 83 through the inner wall during the movement process, gradually extruding the two roller assemblies 83, thereby pushing the two symmetrical sliding plates 5 to approach, at the same time, the movement of the linkage plate 81 gradually pushes the two pressure jaws 85, the two pressure jaws 85 rotate on the two supporting shafts 84 respectively, the two pressure jaws 85 extrude the last sliding plate 5 inward, the four sliding plates 5 slide on the four fixed rod assemblies 4 respectively and compress the four spring assemblies 6, and the four probe assemblies 7 are contacted with the PCB from four directions respectively, the four probe assemblies 7 are connected with external equipment through lines for conduction test, when the PCB test is completed and needs to be taken out, the linkage plate 81 is pulled back to reset through the quick clamp 82, the pushing of the four sliding plates 5 is cancelled, the four fixed rod assemblies 4 apply elastic force on the four sliding plates 5 respectively, the four sliding plates 5 drive the four probe assemblies 7 to reset and move away from the PCB, so that the PCB can be taken out from the mounting seat 3.

[0037] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A PCB multi-association test fixture, comprising a workbench (1), characterized in that: The top end of the workbench (1) is fixedly connected with four fixed blocks (2) and a mounting seat (3), and the mounting seat (3) is located between the four fixed blocks (2). Four fixed rod assemblies (4) are fixedly connected between the outer surfaces of the four fixed blocks (2) and the mounting seat (3). The circumferential surfaces of the four fixed rod assemblies (4) are slidably connected with four sliding plates (5). The circumferential surfaces of the four fixed rod assemblies (4) are sleeved with four spring assemblies (6), and the four spring assemblies (6) are located between the four sliding plates (5) and the mounting seat (3). The top ends of the four sliding plates (5) are fixedly connected with four probe assemblies (7), and the four probe assemblies (7) correspond to the mounting seat (3). The workbench (1) is provided with a linkage mechanism, which is used to control the movement of the four probe assemblies (7) to contact the PCB board for testing.

2. The PCB multi-impedance test fixture of claim 1, wherein: The linkage mechanism comprises a linkage plate (81), a quick clamp (82), two roller shaft assemblies (83), two support shafts (84) and two pressing jaws (85). The linkage plate (81) is fixedly connected to the outer surface of one sliding plate (5). The quick clamp (82) is fixedly connected to the top end of the workbench (1), and one end of the quick clamp (82) is fixedly connected to one side end of the linkage plate (81). The two roller shaft assemblies (83) are fixedly connected to the ends of the two sliding plates (5) away from each other, and the two roller shaft assemblies (83) correspond to the linkage plate (81). The two support shafts (84) are fixedly connected to the top end of the workbench (1). The two pressing jaws (85) are rotatably connected to the top ends of the two support shafts (84), and the two pressing jaws (85) correspond to the linkage plate (81).

3. The PCB multi-impedance test fixture of claim 2, wherein: The linkage plate (81) is provided with two inclined surfaces (9), and the two quick clamps (82) are in contact with the two inclined surfaces (9).

4. The PCB multi-impedance test fixture of claim 3, wherein: The top end of the workbench (1) is fixedly connected with two limiting columns (10), and two limiting holes (11) are formed in the two pressing jaws (85), and the top ends of the two limiting columns (10) penetrate into the two limiting holes (11).

5. The PCB board multi-impedance test fixture of claim 4, wherein: Four sliding bearing assemblies (12) are fixedly connected in the four sliding plates (5), and the four sliding bearing assemblies (12) are slidably connected to the circumferential surfaces of the four fixed rod assemblies (4).

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