Printed circuit board test fixture

Abstract

The utility model belongs to the technical field of test fixtures, and particularly relates to a printed circuit board test fixture which comprises a test fixture body, a clamping plate is installed at the bottom end of the surface of the test fixture body, a sliding rod is arranged on the surface of the back side of the test fixture body, and a platform is installed on the surface of the top end of the test fixture body. A side plate is installed on the side of the clamping plate, a fixing plate is arranged on the side face of the side plate, a clamping groove is formed in the side face of the side plate, a clamping block is arranged in the center of the clamping groove, a connecting plate is arranged at the bottom end in the clamping groove, and a bottom plate is connected to the side face of the connecting plate. According to the utility model, when the damage caused by the pressure of the clamping plates to the circuit board is reduced, when the clamping plates clamp the circuit board, the side plates move along with the clamping plates, then the connecting plates in the side plates are connected with the soft cushions in the connecting grooves, and under the action of the soft cushions, the direct contact pressure between the clamping plates and the circuit board is reduced; therefore, the damage to the circuit board caused by direct contact between the clamping plate and the circuit board can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of test fixtures, and in particular relates to a printed circuit board test fixture. Background Art

[0002] Printed circuit boards are providers of electrical connections for electronic components. They have a history of more than a hundred years. Their design is mainly layout design. The main advantage of using printed circuit boards is that they greatly reduce wiring and assembly errors, and improve the level of automation and production labor rate.

[0003] Among them, the "printed circuit board test fixture" disclosed in the application number "CN201921108667.8" is also an increasingly mature technology. By setting probe mounting holes and power plug posts, the fixture can be replaced according to different types of circuit boards, which is conducive to the device to detect different types of boards, improves the detection flexibility of the device, and reduces the cost of detection.

[0004] However, the device still has the following defects: when the above-mentioned device is in use, it cannot protect the circuit board when using the circuit board test fixture. Due to the thin thickness of the circuit board, when the circuit board test fixture clamps the circuit board with too much force, it will cause damage to the circuit board. Utility Model Content

[0005] The utility model aims to provide a printed circuit board test fixture, aiming to solve the problem that the above-mentioned equipment in the prior art cannot protect the circuit board when the circuit board test fixture is used, and due to the thin thickness of the circuit board, when the clamping force of the circuit board test fixture on the circuit board is too large, the circuit board is damaged.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a printed circuit board test fixture, comprising a test fixture, a clamping plate is installed on the bottom end of the surface of the test fixture, a sliding rod is arranged on the back surface of the test fixture, and a platform is installed on the top surface of the test fixture;

[0007] A side plate is installed on the side of the splint, a fixing plate is arranged on the side of the side plate, a card slot is opened on the side of the side plate, a card block is arranged at the center of the card slot, a connecting plate is arranged at the inner bottom end of the card slot, the side of the connecting plate is connected to the bottom plate, a support rod is arranged on the top surface of the bottom plate, a connecting slot is opened on the top side of the platform, and a soft pad is arranged inside the connecting slot.

[0008] In order to allow the connecting plate to pass through the opening at the bottom end of the side plate, as a preferred printed circuit board test fixture of the utility model, a group of side plates are symmetrically arranged on both sides of the clamping plate with the center of the clamping plate as the axis, and the bottom end of each group of side plates is open, and the size of the opening at the bottom end of the side plate matches the shape of the connecting plate inside the slot.

[0009] In order to limit the position of the docking plate, as a preferred printed circuit board test fixture of the utility model, the base plate is provided with two groups of card slots on both sides of the bottom end, the centers of the two groups of card slots are separated by card blocks, and the ends of the support rods connected to the top surface of the base plate are fixed to the upper ends of the inner walls of the card slots.

[0010] In order to dock the connecting plate with the connecting groove, as a preferred printed circuit board test fixture of the utility model, the connecting groove is opened on both sides of the top of the platform, the position of the connecting groove matches the connecting plate inside the side panels on both sides of the clamp, and multiple groups of soft pads are arranged at equal intervals inside the connecting groove.

[0011] In order to restrict the position of the circuit board on the platform, as a preferred printed circuit board test fixture of the utility model, a circular plate is installed on the bottom end of the surface of the sliding rod, a connecting block is provided on the surface of the circular plate, a telescopic rod is provided at the center of the connecting block, the top of the telescopic rod is connected to a resist plate, a sliding groove is provided at the top of the platform, a sliding block is provided inside the sliding groove, a moving block is provided inside the top of the sliding block, and a long plate is connected to the end of the resist plate.

[0012] In order to ensure that the circular plate on the surface of the sliding rod does not affect the use of the sliding rod when in use, as a preferred printed circuit board test fixture of the utility model, the circular plate is installed on the surfaces of the two groups of sliding rods, and the position of the circular plate on the surface of the sliding rod corresponds to the position of the abutment plate set on the platform surface.

[0013] In order to restrict the position of another group of abutment plates, as a preferred printed circuit board test fixture of the utility model, two groups of abutment plates are arranged on the platform surface, one group is connected to the end of the telescopic rod, and a plurality of groups of card holes are provided on the surface of the long plate at equal intervals, and each group of card holes is provided with card bolts corresponding to the two sides of the other group of abutment plates on the inner wall of the long plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1) By reducing the damage caused by the pressure of the clamping plate on the circuit board, when the clamping plate clamps the circuit board, the side plate moves together with the clamping plate, and then the connecting plate inside the side plate is connected with the soft pad inside the connecting groove. Under the action of the soft pad, the direct contact pressure between the clamping plate and the circuit board is reduced, so that the damage to the circuit board caused by the direct contact between the clamping plate and the circuit board can be reduced;

[0016] 2) When it is necessary to limit the position of the circuit board placed on the surface of the sliding rod, then before the clamp clamps the circuit board, start the telescopic rod connected to the power supply, so that the telescopic rod pushes a group of abutment plates to connect with one side of the circuit board along the long plates on both sides, and then pulls the other group of abutment plates to move inside the sliding groove, so that the side of the other group of abutment plates is connected with the other side of the circuit board, so that the position of the circuit board will not move before it is connected to the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the main three-dimensional structure of the utility model;

[0019] Figure 2 It is a side view stereoscopic structural schematic diagram of the utility model;

[0020] Figure 3 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0021] Figure 4 It is a side cross-sectional structural schematic diagram of the utility model;

[0022] Figure 5 For the utility model Figure 2 A is a schematic diagram of the enlarged structure;

[0023] Figure 6 For the utility model Figure 4 Middle B is a schematic diagram of the enlarged structure.

[0024] In the figure: 1. test fixture; 2. clamping plate; 3. sliding rod; 301. platform; 4. side plate; 5. fixing plate; 6. slot; 7. clamping block; 8. connecting plate; 9. bottom plate; 10. supporting rod; 11. connecting slot; 12. cushion; 13. round plate; 14. connecting block; 15. telescopic rod; 16. abutment plate; 17. slide slot; 18. slider; 19. moving block; 20. long board. DETAILED DESCRIPTION

[0025] 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 in 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.

[0026] See also Figure 1-6 The utility model provides the following technical solutions: a printed circuit board test fixture, comprising a test fixture 1, the test fixture 1 in the technical solution is a printed circuit board test fixture 1, a clamping plate 2 is installed on the bottom end of the surface of the test fixture 1, a sliding rod 3 is arranged on the back surface of the test fixture 1, and a platform 301 is installed on the top surface of the test fixture 1;

[0027] A side plate 4 is installed on the side of the splint 2, a fixing plate 5 is arranged on the side of the side plate 4, a card slot 6 is opened on the side of the side plate 4, a card block 7 is arranged at the center of the card slot 6, a connecting plate 8 is arranged at the bottom end of the inner part of the card slot 6, a bottom plate 9 is connected to the side of the connecting plate 8, a support rod 10 is arranged on the top surface of the bottom plate 9, a connecting slot 11 is opened on the top side of the platform 301, and a cushion 12 is arranged inside the connecting slot 11.

[0028] Preferably, a group of side panels 4 are symmetrically arranged on both sides of the clamping plate 2 with the center of the clamping plate 2 as the axis, the bottom end of each group of side panels 4 is open, and the size of the bottom end opening of the side panel 4 matches the shape of the connecting plate 8 in the slot 6.

[0029] When in use, it is necessary to make the bottom end of the inner connecting plate 8 of the side plate 4 butt against the surface of the soft pad 12 inside the connecting groove 11 when the clamping plate 2 moves.

[0030] Preferably, two groups of bottom plate 9 are provided on both sides of the bottom end of the slot 6 , the centers of the two groups of slots 6 are separated by a block 7 , and the ends of the support rods 10 connected to the top surface of the bottom plate 9 are fixed to the upper ends of the inner walls of the slots 6 .

[0031] During specific use, when the connecting plate 8 needs to be connected to the soft pad 12, the bottom plate 9 restricted by the support rod 10 can prevent the connecting plate 8 from rebounding.

[0032] Preferably, the connection grooves 11 are opened on both sides of the top of the platform 301 , the positions of the connection grooves 11 match the connection plates 8 inside the side plates 4 on both sides of the clamping plate 2 , and multiple groups of cushions 12 are arranged at equal intervals inside the connection grooves 11 .

[0033] During specific use, it is necessary to make the connecting plate 8 under the action of the soft pad 12 so that the clamping plate 2 can reduce the pressure of direct contact with the circuit board.

[0034] Preferably: a circular plate 13 is installed at the bottom end of the surface of the slide rod 3, a connecting block 14 is provided on the surface of the circular plate 13, a telescopic rod 15 is provided at the center of the connecting block 14, the top of the telescopic rod 15 is connected to a stop plate 16, a slide groove 17 is provided at the top of the platform 301, a slider 18 is provided inside the slide groove 17, a moving block 19 is provided inside the top of the slider 18, and a long plate 20 is connected to the end of the stop plate 16.

[0035] During specific use, when it is necessary to place the circuit board on the surface of the platform 301, the telescopic rod 15 is started to push one group of abutment plates 16 to move along the inner walls of the long plates 20 on both sides, and the abutment plates 16 on the other side are pulled, so that the other group of abutment plates 16 moves along the slider 18, and the clamping bolt is passed through the clamping hole to dock with the side of the other group of abutment plates 16, so that the two groups of abutment plates 16 clamp the two ends of the circuit board.

[0036] Preferably, the circular plate 13 is installed on the surfaces of the two groups of slide bars 3 , and the position of the circular plate 13 on the surface of the slide bars 3 corresponds to the position of the abutment plate 16 arranged on the surface of the platform 301 .

[0037] During specific use, it is necessary to provide a groove on the support plate surface connected to the end of the slide rod 3 that matches the circular plate 13 and the connecting block 14, so that when the clamping plate 2 moves along the slide rod 3, the circular plate 13 at the bottom will not affect the use of the test fixture 1.

[0038] Preferably, two groups of abutment plates 16 are provided on the surface of the platform 301, one group being connected to the end of the telescopic rod 15, and a plurality of groups of latch holes are provided on the surface of the long board 20 at equal intervals, and each group of latch holes is provided with latch bolts corresponding to the two sides of the other group of abutment plates 16 on the inner wall of the long board 20.

[0039] During specific use, the clamping bolt needs to pass through the clamping hole on the surface of the long plate 20 and dock with two sides of the other set of abutment plates 16 .

[0040] Working principle: First, when it is necessary to reduce the damage caused by the pressure of the clamping plate 2 on the circuit board, the platform 301 should be installed on the surface of the test fixture 1, and then the side plates 4 should be installed on both sides of the clamping plate 2, and then the fixing plates 5 should be set on both sides of the side plates 4. At this time, a card slot 6 is opened on the side of the side plate 4, and then the card block 7 is set in the center of the card slot 6. At this time, the connecting plate 8 is set on the inner wall of the card slot 6 and an opening is opened at the bottom end of the side plate 4, so that the top of the connecting plate 8 passes through the opening, and then the bottom plate 9 connected to the side of the connecting plate 8 is connected to the support rod 10 at the top of the inner wall of the card slot 6, and then the connecting grooves are opened on both sides of the top of the platform 301. 11, and then set the soft pad 12 on the inner wall of the connection groove 11. At this time, when the clamping plate 2 clamps the circuit board, the side plate 4 needs to move together with the clamping plate 2, and then the connecting plate 8 inside the side plate 4 is connected to the soft pad 12 inside the connection groove 11, so that under the action of the soft pad 12, the direct contact pressure between the clamping plate 2 and the circuit board is reduced, and the support rod 10 limits the bottom plate 9 connected to the connecting plate 8, so that under the action of the support rod 10, when the connecting plate 8 is connected to the soft pad 12, the connecting plate 8 will not be unusable due to rebound, so that the direct contact between the clamping plate 2 and the circuit board can be reduced to cause damage to the circuit board;

[0041] Secondly, when it is necessary to limit the position of the circuit board placed on the surface of the slide bar 3, it is necessary to install the circular plate 13 on the surface of the slide bar 3, and then set the connecting block 14 on the surface of the circular plate 13, and then connect the end of the telescopic rod 15 to the connecting block 14, and then connect the top of the telescopic rod 15 to the side of a group of abutment plates 16 set on the other two sides of the slide bar 3. At this time, a slide groove 17 is opened on the top surface of the other side of the platform 301, and then the slider 18 is set inside the slide groove 17, and the top of the moving block 19 inside the slider 18 is connected to the bottom end of the other group of abutment plates 16. At this time, the long plate 20 is set at both ends of the two groups of abutment plates 16, and the bottom end of the long plate 20 is connected to the bottom surface of the platform 301, and then the circuit board is clamped on the clamping plate 2. Before, start the telescopic rod 15 connected to the power supply, so that the telescopic rod 15 pushes a group of abutment plates 16 to move along the long plates 20 on both sides, and then makes the side of a group of abutment plates 16 connected to one side of the circuit board. At this time, pull the other group of abutment plates 16, so that the abutment plates 16 drive the slider 18 to move inside the slide groove 17 along the moving block 19 at the bottom, so that the side of the other group of abutment plates 16 is connected to the other side of the circuit board, and then connect the clamping bolts inside the clamping holes opened in the long plates 20 to the two sides of the other group of abutment plates 16, so that the position of the other group of abutment plates 16 is fixed by the clamping bolts, so that the position of the circuit board placed on the surface of the slide rod 3 can be restricted, so that the position of the circuit board will not move before it is connected to the clamping plate 2.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A printed circuit board test fixture, comprising: A test fixture (1), wherein a clamping plate (2) is installed on the bottom of the surface of the test fixture (1), and a sliding rod (3) is arranged on the back surface of the test fixture (1), characterized in that a platform (301) is installed on the top surface of the test fixture (1); A side plate (4) is installed on the side of the clamping plate (2), a fixing plate (5) is arranged on the side of the side plate (4), a card slot (6) is provided on the side of the side plate (4), a card block (7) is arranged at the center of the card slot (6), a connecting plate (8) is arranged at the bottom end of the inner part of the card slot (6), the side of the connecting plate (8) is connected to a bottom plate (9), a support rod (10) is arranged on the top surface of the bottom plate (9), a connecting slot (11) is provided on the top side of the platform (301), and a soft pad (12) is arranged inside the connecting slot (11).

2. A printed circuit board test fixture according to claim 1, characterized in that: A group of side panels (4) are symmetrically arranged on both sides of the clamping plate (2) with the center of the clamping plate (2) as the axis, and the bottom end of each group of side panels (4) is open, and the size of the bottom end opening of the side panels (4) matches the shape of the connecting plate (8) in the slot (6).

3. A printed circuit board test fixture according to claim 1, characterized in that: The bottom plate (9) is provided with two groups of card slots (6) on both sides of the bottom end thereof, the centers of the two groups of card slots (6) are separated by a card block (7), and the ends of the support rods (10) connected to the top surface of the bottom plate (9) are fixed to the upper ends of the inner walls of the card slots (6).

4. A printed circuit board test fixture according to claim 1, characterized in that: The connection groove (11) is opened on both sides of the top of the platform (301), the position of the connection groove (11) matches the connection plate (8) inside the side plates (4) on both sides of the clamping plate (2), and multiple groups of soft pads (12) are arranged at equal intervals inside the connection groove (11).

5. A printed circuit board test fixture according to claim 1, characterized in that: A circular plate (13) is installed at the bottom end of the surface of the sliding rod (3), a connecting block (14) is arranged on the surface of the circular plate (13), a telescopic rod (15) is arranged at the center of the connecting block (14), the top of the telescopic rod (15) is connected to a support plate (16), a sliding groove (17) is opened at the top of the platform (301), a sliding block (18) is arranged inside the sliding groove (17), a moving block (19) is arranged inside the top of the sliding block (18), and a long plate (20) is connected to the end of the support plate (16).

6. A printed circuit board test fixture according to claim 5, characterized in that: The circular plate (13) is installed on the surfaces of the two sets of slide bars (3), and the position of the circular plate (13) on the surface of the slide bars (3) corresponds to the position of the abutment plate (16) arranged on the surface of the platform (301).

7. A printed circuit board test fixture according to claim 6, characterized in that: Two groups of the abutment plates (16) are arranged on the surface of the platform (301), one group being connected to the end of the telescopic rod (15), and a plurality of groups of clamping holes are provided at equal intervals on the surface of the long plate (20), and each group of clamping holes is provided with clamping bolts corresponding to the two sides of the other group of abutment plates (16) on the inner wall of the long plate (20).

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