CN210243785U

CN210243785U - Circuit board test fixture

Info

Publication number: CN210243785U
Application number: CN201920998860.7U
Authority: CN
Inventors: Qiubo Pan; 潘秋波; Zhishuang Chen; 陈治爽
Original assignee: Kunshan Quanbao Electronic Co Ltd
Current assignee: Kunshan Quanbao Electronic Co Ltd
Priority date: 2019-06-29
Filing date: 2019-06-29
Publication date: 2020-04-03
Anticipated expiration: 2029-06-29

Abstract

The utility model discloses a circuit board test fixture, the on-line screen storage device comprises a base, the left side fixed mounting at base top has the backup pad, the left surface fixed mounting of backup pad has the accessory plate, the front of accessory plate is inlayed and is equipped with a plurality of universal meter, the right side fixed mounting at base top has the workstation, the both sides at workstation top all are provided with stop gear, stop gear is by a supporting seat, a second threaded rod, two auxiliary rods and a clamp splice are constituteed, the surface and the supporting seat threaded connection of second threaded rod, clamp splice fixed mounting is served at one of second threaded rod, the top of backup pad articulates there is pressing mechanism. The utility model discloses a set up the second spring and make the montant promote lower test point contact on pen-shape metre and the circuit board to it is more stable when making the electronic component contact on pen-shape metre and the circuit board, has the condition of contact failure between pen-shape metre and the lower electronic component when avoiding testing.

Description

Circuit board test fixture

Technical Field

The utility model relates to a test fixture specifically is a circuit board test fixture.

Background

The circuit board makes the circuit miniaturation, it is direct-viewing, batch production to fixed circuit and optimization play an important role with electrical apparatus overall arrangement, the circuit board can be called printed wiring board or printed circuit board, it has the characteristics that wiring density is high, light in weight, thickness is thin, the nature of buckling is good, need use dedicated circuit board test fixture to test when the circuit board tests, because install the different electronic component of multiple size height on the circuit board, and the length of current test fixture probe is mostly fixed, the probe probably has the condition of contact failure between lower electronic component when leading to the test, thereby influence the accuracy of test result. Therefore, we improve this and propose a circuit board testing fixture.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a circuit board testing jig, which comprises a base, wherein a supporting plate is fixedly arranged at the left side of the top of the base, an auxiliary plate is fixedly arranged at the left side surface of the supporting plate, a plurality of universal meters are embedded at the front surface of the auxiliary plate, a workbench is fixedly arranged at the right side of the top of the base, limiting mechanisms are arranged at both sides of the top of the workbench, each limiting mechanism comprises a supporting seat, a second threaded rod, two auxiliary rods and a clamping block, the outer surface of the second threaded rod is in threaded connection with the supporting seat, the clamping block is fixedly arranged at one end of the second threaded rod, a pressing mechanism is hinged at the top end of the supporting plate and comprises a handle, a pressing rod, a groove, a first threaded rod and a limiting block, the outer surface of the pressing rod is in alternate connection with the handle, the groove is, the first threaded rod is in threaded connection with the front side of the handle, one end of the first threaded rod extends into the pressure rod and is fixedly connected with the limiting block, and the right side face of the supporting plate is fixedly provided with a connecting block;

the middle part of the connecting block is provided with a connecting mechanism, the connecting mechanism consists of a connecting rod, a pressing block and a first spring, the first spring is arranged on the outer surface of the connecting rod, the top end of the connecting rod is fixedly connected with the pressing block, the bottom end of the connecting rod penetrates through the connecting block and extends to the outside of the bottom end of the connecting block, and is fixedly connected with a testing mechanism, the testing mechanism consists of a mounting plate, a plurality of vertical rods, a plurality of meter pens and a plurality of second springs, the left side of the top of the mounting plate is fixedly connected with the connecting rod, the outer surfaces of a plurality of vertical rods are all connected with the mounting plate in an inserting way, the bottom ends of the plurality of vertical rods are respectively fixedly connected with a plurality of meter pens, a plurality of second springs are respectively arranged on the outer surfaces of the plurality of vertical rods, four ends of base bottom all fixed mounting have the non slipping spur, the top fixed mounting of backup pad right flank has the limiting plate that is located the handle below.

As an optimal technical scheme of the utility model, the left end of handle is articulated with the top of backup pad, the surface of handle is provided with anti-skidding granule.

As a preferred technical scheme of the utility model, the surface and the connecting block of connecting rod alternate and are connected, the top of first spring and the bottom fixed connection of briquetting, the bottom of first spring and the top fixed connection of connecting block.

As a preferred technical scheme of the utility model, the bottom of supporting seat and the top fixed connection of workstation, two the surface of auxiliary rod all alternates with the supporting seat and is connected, two the one end of auxiliary rod all with clamp splice fixed connection.

As a preferred technical scheme of the utility model, the second spring is located between pen-shape metre and the mounting panel, the top of second spring and the bottom fixed connection of mounting panel, the bottom of second spring and the top fixed connection of pen-shape metre.

As a preferred technical scheme of the utility model, the quantity of pen-shape metre is the twice of universal meter quantity, per two pen-shape metre and a universal meter electric connection.

As a preferred technical scheme of the utility model, the left end of mounting panel is provided with the gag lever post, the top and the connecting block fixed connection of gag lever post, the bottom and the workstation fixed connection of gag lever post.

The utility model has the advantages that: the circuit board testing jig has the advantages that the vertical rod pushes the meter pen to be in contact with a lower testing point on the circuit board through the arrangement of the second spring, thereby ensuring that the contact between the stylus and the electronic element on the circuit board is more stable, avoiding the poor contact between the stylus and the lower electronic element during the test, the displacement distance of the mounting plate when the handle and the pressure rod press the pressing block can be changed by adjusting the positions of the pressure rod and the handle, thereby the testing jig can meet the testing requirements of circuit boards with different thicknesses, the positions of the pressure lever and the handle can be fixed by arranging the first threaded rod and the limiting block, thereby preventing the position of the pressure lever from deviating in the using process, ensuring that when the handle is pressed each time through the limiting plate, the distance that the mounting panel descends is the same, avoids pressing the dynamics of moving the handle when the test too big distance that makes the mounting panel descend to lead to the stylus and circuit board to damage too much.

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 serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of a circuit board testing jig of the present invention;

fig. 2 is a schematic top view of a worktable of a circuit board testing jig according to the present invention;

fig. 3 is a schematic view of a local overlooking structure of a handle of the circuit board testing fixture of the present invention.

In the figure: 1. a base; 2. a support plate; 3. an auxiliary plate; 4. a universal meter; 5. a handle; 6. a pressure lever; 7. a groove; 8. a first threaded rod; 9. a limiting block; 10. connecting blocks; 11. a connecting rod; 12. briquetting; 13. a first spring; 14. a limiting rod; 15. mounting a plate; 16. a vertical rod; 17. a meter pen; 18. a second spring; 19. a work table; 20. a supporting seat; 21. a second threaded rod; 22. an auxiliary lever; 23. a clamping block; 24. anti-skid blocks; 25. and a limiting plate.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in FIG. 1, FIG. 2 and FIG. 3, the utility model relates to a circuit board testing jig, which comprises a base 1, a supporting plate 2 is fixedly arranged on the left side of the top of the base 1, an auxiliary plate 3 is fixedly arranged on the left side surface of the supporting plate 2, a plurality of multimeters 4 are embedded on the front surface of the auxiliary plate 3, a workbench 19 is fixedly arranged on the right side of the top of the base 1, two sides of the top of the workbench 19 are respectively provided with a limiting mechanism, the limiting mechanism is composed of a supporting seat 20, a second threaded rod 21, two auxiliary rods 22 and a clamping block 23, the outer surface of the second threaded rod 21 is in threaded connection with the supporting seat 20, the clamping block 23 is fixedly arranged on one end of the second threaded rod 21, the top end of the supporting plate 2 is hinged with a pressing mechanism, the pressing mechanism is composed of a handle 5, a pressing rod 6, a groove 7, the groove 7 is formed in the front face of the pressing rod 6, the first threaded rod 8 is in threaded connection with the front face of the handle 5, one end of the first threaded rod 8 extends into the pressing rod 6 and is fixedly connected with the limiting block 9, and the connecting block 10 is fixedly installed on the right side face of the supporting plate 2;

the middle part of the connecting block 10 is provided with a connecting mechanism, the connecting mechanism is composed of a connecting rod 11, a pressing block 12 and a first spring 13, the first spring 13 is arranged on the outer surface of the connecting rod 11, the top end of the connecting rod 11 is fixedly connected with the pressing block 12, the bottom end of the connecting rod 11 penetrates through the connecting block 10 and extends to the outside of the bottom end of the connecting block 10 and is fixedly connected with a testing mechanism, the testing mechanism is composed of a mounting plate 15, a plurality of montant 16, a plurality of pen-shape metre 17 and a plurality of second spring 18 are constituteed, the left side and the 11 fixed connection of connecting rod at mounting panel 15 top, a plurality of montant 16's surface all alternates with mounting panel 15 and is connected, a plurality of montant 16's bottom respectively with a plurality of pen-shape metre 17 fixed connection, a plurality of second spring 18 sets up the surface at a plurality of montant 16 respectively, the equal fixed mounting in four ends of base 1 bottom has non slipping spur 24, the top fixed mounting of 2 right flanks in backup pad has the limiting plate 25 that is located handle 5 below.

Wherein, the left end of handle 5 is articulated with the top of backup pad 2, and the surface of handle 5 is provided with anti-skidding granule, and anti-skidding granule can increase the frictional force between handle 5 and the tester hand, and then more stable when making tester hold handle 5.

Wherein, the surface of connecting rod 11 alternates with connecting block 10 and is connected, the top of first spring 13 and the bottom fixed connection of briquetting 12, the bottom of first spring 13 and the top fixed connection of connecting block 10, when tester unclamped handle 5, first spring 13 can promote briquetting 12 and rise, and then makes connecting rod 11 drive the pen-shape metre 17 and rise and separate with the circuit board.

Wherein, the bottom of supporting seat 20 and the top fixed connection of workstation 19, the surface of two auxiliary rods 22 all alternates with supporting seat 20 and is connected, the one end of two auxiliary rods 22 all with clamp splice 23 fixed connection, can inject the position when clamp splice 23 removes through setting up auxiliary rods 22 to take place the upset when preventing clamp splice 23 to remove, improved the stability when clamp splice 23 removes.

The second spring 18 is located between the meter pen 17 and the mounting plate 15, the top end of the second spring 18 is fixedly connected with the bottom of the mounting plate 15, the bottom end of the second spring 18 is fixedly connected with the top of the meter pen 17, the vertical rod 16 pushes the meter pen 17 to be in contact with a lower test point on the circuit board by arranging the second spring 18, so that the meter pen 17 is more stable when in contact with an electronic element on the circuit board, the condition that contact failure exists between the meter pen 17 and the lower electronic element during testing is avoided, and the model applicable to the meter pen 17 is the SL-BB01 type meter pen.

Wherein, the quantity of pen-shape metre 17 is the twice of universal meter 4 quantity, and every two pen-shape metres 17 and a universal meter 4 electric connection, the model that universal meter 4 is applicable is MF47 type pointer universal meter, and when the test point contact on pen-shape metre 17 and the circuit board, if universal meter 4 pointer changes, then the circuit between two test points switches on, and the circuit board is normal promptly, if universal meter 4 pointer does not change, then the circuit between two test points is unusual, and the circuit board is unusual promptly.

Wherein, the left end of mounting panel 15 is provided with gag lever post 14, and the top and the connecting block 10 fixed connection of gag lever post 14, the orbit when mounting panel 15 rises or descends can be injectd through gag lever post 14 to 19 fixed connection in the bottom of gag lever post 14 to the position when preventing mounting panel 15 to remove takes place the skew.

When the universal meter test device works, firstly, the two second threaded rods 21 are rotated, the distance between the two clamping blocks 23 is adjusted according to the size of a circuit board to be tested, then the first threaded rod 8 is unscrewed, the pressure rod 6 is pulled upwards or downwards according to the thickness of the circuit board to be measured, the position of the pressure rod 6 is adjusted, then the first threaded rod 8 is screwed, at the moment, the limiting block 9 is contacted with the inner wall of the groove 7 under the action of the first threaded rod 8, so that the position of the pressure rod 6 is fixed, the position of the pressure rod 6 is prevented from being deviated in the using process, then the circuit board to be tested is placed between the two clamping blocks 23, then the handle 5 is pressed downwards, at the moment, the handle 5 drives the pressure rod 6 to press the pressure block 12, the pressure block 12 drives the connecting rod 11 and the mounting plate 15 to descend, the mounting plate, the circuit between the two test points is conducted, namely the circuit board is normal, if the pointer of the universal meter 4 is unchanged, the circuit between the two test points is abnormal, namely the circuit board is abnormal, the second spring 18 enables the vertical rod 16 to push the meter pen 17 to be in contact with the lower test point on the circuit board in the test process, so that the meter pen 17 is more stable in contact with the electronic element on the circuit board, and the condition that poor contact exists between the meter pen 17 and the lower electronic element in the test process is avoided.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A circuit board testing jig comprises a base (1) and is characterized in that a supporting plate (2) is fixedly mounted on the left side of the top of the base (1), an auxiliary plate (3) is fixedly mounted on the left side face of the supporting plate (2), a plurality of universal meters (4) are embedded in the front face of the auxiliary plate (3), a workbench (19) is fixedly mounted on the right side of the top of the base (1), limiting mechanisms are arranged on two sides of the top of the workbench (19), each limiting mechanism comprises a supporting seat (20), a second threaded rod (21), two auxiliary rods (22) and a clamping block (23), the outer surface of the second threaded rod (21) is in threaded connection with the supporting seat (20), the clamping block (23) is fixedly mounted at one end of the second threaded rod (21), and a pressing mechanism is hinged to the top end of the supporting plate (2), the pressing mechanism is composed of a handle (5), a pressing rod (6), a groove (7), a first threaded rod (8) and a limiting block (9), the outer surface of the pressing rod (6) is connected with the handle (5) in an inserting mode, the groove (7) is formed in the front face of the pressing rod (6), the first threaded rod (8) is connected to the front face of the handle (5) in a threaded mode, one end of the first threaded rod (8) extends into the pressing rod (6) and is fixedly connected with the limiting block (9), and a connecting block (10) is fixedly installed on the right side face of the supporting plate (2);

the middle part of connecting block (10) is provided with coupling mechanism, coupling mechanism comprises connecting rod (11), briquetting (12) and first spring (13), first spring (13) set up the surface at connecting rod (11), the top and briquetting (12) fixed connection of connecting rod (11), the outside and the fixedly connected with test mechanism of connecting rod (11) bottom is passed connecting block (10) and is extended to the bottom of connecting block (10), test mechanism comprises a mounting panel (15), a plurality of montant (16), a plurality of pen-shape metre (17) and a plurality of second spring (18), the left side and the connecting rod (11) fixed connection at mounting panel (15) top, a plurality of the surface of montant (16) all alternates with mounting panel (15) and is connected, a plurality of the bottom of montant (16) respectively with a plurality of pen-shape metre (17) fixed connection, a plurality of second spring (18) set up respectively at the surface of a plurality of montant (16), the equal fixed mounting in four ends of base (1) bottom has non slipping spur (24), the top fixed mounting of backup pad (2) right flank has limiting plate (25) that are located handle (5) below.

2. The circuit board testing jig according to claim 1, wherein the left end of the handle (5) is hinged with the top of the supporting plate (2), and the outer surface of the handle (5) is provided with anti-skid particles.

3. The testing jig for the circuit board according to claim 1, wherein the outer surface of the connecting rod (11) is inserted into and connected with the connecting block (10), the top end of the first spring (13) is fixedly connected with the bottom of the pressing block (12), and the bottom end of the first spring (13) is fixedly connected with the top of the connecting block (10).

4. The testing fixture of circuit board according to claim 1, wherein the bottom of the supporting base (20) is fixedly connected with the top of the worktable (19), the outer surfaces of the two auxiliary rods (22) are inserted into the supporting base (20), and one ends of the two auxiliary rods (22) are fixedly connected with the clamping blocks (23).

5. The testing jig for the circuit board according to claim 1, wherein the second spring (18) is located between the meter pen (17) and the mounting plate (15), the top end of the second spring (18) is fixedly connected with the bottom of the mounting plate (15), and the bottom end of the second spring (18) is fixedly connected with the top of the meter pen (17).

6. The circuit board testing jig according to claim 1, characterized in that the number of the test pens (17) is twice the number of the multimeters (4), and every two test pens (17) are electrically connected with one multimeter (4).

7. The circuit board testing jig according to claim 1, characterized in that a limiting rod (14) is disposed at the left end of the mounting plate (15), the top end of the limiting rod (14) is fixedly connected with the connecting block (10), and the bottom end of the limiting rod (14) is fixedly connected with the workbench (19).