Test fixture for PCBA (printed circuit board assembly)

Abstract

The utility model relates to the technical field of test fixtures, in particular to a test fixture for a PCBA (printed circuit board assembly), which comprises a bottom plate and two fixing plates, supporting rods are fixedly mounted on the front side and the rear side of the lower end of each fixing plate, and the lower ends of the supporting rods are fixedly mounted on the four sides of the upper end of the bottom plate; when a PCBA board is detected, a rotating plate is rotated to rotate a rubber pad to the outer side of a first limiting plate, the PCBA board is placed at the upper end of a lifting plate, then a threaded rod is rotated to enable a second limiting plate and the first limiting plate to clamp the PCBA board, then a pull rod is loosened, and under the counter-acting force of a spring, the PCBA board is clamped by the second limiting plate and the first limiting plate. A rubber pad is pressed at the upper end of the PCBA board to fix the PCBA board, the PCBA board can be detected, after detection is completed, a threaded rod is rotated reversely, a second limiting plate is driven to reset, then an electric push rod is started to drive a lifting plate to drive the PCBA board to move upwards to the upper end of a first limiting plate and the upper end of the second limiting plate, and the PCBA board can be taken down conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to test fixture technical field, concretely is a kind of test fixture for PCBA board. BACKGROUND

[0002] PCBA is the whole process of PCB blank after SMT upper piece, or after DIP plug-in, is abbreviated as PCBA, printed circuit board, also called printed circuit board, printed wiring board, commonly uses the English abbreviation PCB, is important electronic component, is the support body of electronic component, is the provider of electronic component circuit connection.

[0003] Chinese patent CN215297456U discloses a kind of PCBA circuit board test fixture's clamping mechanism, by being provided with adjusting block and short screw rod, driven screw rod can slide in the sliding hole inner wall of rotating block, the end of rotating rod far from adjusting block can contact fixture, if thickness is too large, adjusting knob can be rotated to make short screw rod, short screw rod positive and negative rotation can control adjusting block to move upwards, to control the height of one end of rotating rod, clamping thicker fixture can be controlled at this time,

[0004] However, the patent does not design the device for fixing PCBA board and the PCBA board after testing is not easy to take. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of test fixture for PCBA board to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of test fixture for PCBA board, comprising: bottom plate and fixed plate, the fixed plate is equipped with two blocks, and the lower end of each fixed plate is fixedly installed with support rod on the front and rear sides, and the lower end of support rod is fixedly installed on the upper end of the four sides of bottom plate;

[0007] One end of the two fixed plates is fixedly connected with limit plate one, and the other end is slidably connected with limit plate two, and driving component is arranged between limit plate two and fixed plate, and the upper end of limit plate one is installed with fixed device;

[0008] The lower end of the two fixed plates is fixedly installed with fixed block, and the upper end of fixed block is fixedly installed with electric push rod in the middle, and the upper end of electric push rod is fixedly connected with lifting plate.

[0009] Preferably, one end of each fixed plate is provided with a sliding groove, and the left and right ends of limit plate two are located in the sliding groove.

[0010] Preferably, the driving component includes a horizontal plate and a threaded rod, the horizontal plate is fixed to the outer wall of one end of the two fixed plates, a threaded cylinder is fixedly installed in the middle of the horizontal plate, and the threaded cylinder penetrates the side wall of the horizontal plate.

[0011] Preferably, the outer wall of the threaded rod and the inner wall of the threaded cylinder are threadedly connected, and one end of the threaded rod passes through the threaded cylinder and is rotationally connected with the transverse plate, and the left and right ends of the transverse plate are both fixedly provided with guide rods one, and the outer ends of the guide rods one slide through the fixed plates.

[0012] Preferably, the fixed blocks are U-shaped, and the left and right ends of the fixed blocks are fixedly arranged at the lower ends of the two fixed plates, and the lifting plate is located between the two fixed plates and the upper end of the lifting plate is flush with the lower end of the sliding groove.

[0013] Preferably, the fixing device comprises an ear plate, the ear plate is fixedly arranged at the outer end of the limiting plate one, the upper end of the ear plate is fixedly provided with a round rod, the upper end of the round rod is rotationally connected with a rotating plate through a damping bearing, and the other end of the rotating plate is fixedly provided with a connecting plate on the left and right sides.

[0014] Preferably, the other end of the rotating plate is slidably connected with a pull rod, the lower end of the pull rod passes through the rotating plate and is fixedly provided with a pressing plate, and the lower end of the pressing plate is fixedly provided with a rubber pad.

[0015] Preferably, the upper end of the pressing plate is fixedly provided with guide rods two on the left and right sides, the upper ends of the guide rods two slide through the connecting plate, the outer end of the pull rod is fixedly provided with a baffle, the outer end of the pull rod is sleeved with a spring, the lower end of the spring is fixed to the upper end of the baffle, and the upper end of the spring is fixed to the lower end of the rotating plate.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] Through rotating the rotating plate first, the rubber pad is rotated to the outside of the limiting plate one, the PCBA plate is placed on the upper end of the lifting plate, then the limiting plate two and the limiting plate one are clamped to the PCBA plate by rotating the threaded rod, the rubber pad is rotated to the upper end of the PCBA plate, then the pull rod is loosened, under the reaction force of the spring, the rubber pad is pressed on the upper end of the PCBA plate to fix it, and the PCBA plate can be detected, after detection, the threaded rod is reversed, the limiting plate two is driven to reset, then the electric push rod is started to drive the lifting plate with the PCBA plate to move up to the upper end of the limiting plate one and the limiting plate two, and the PCBA plate can be taken down conveniently. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view of the overall structure of the utility model;

[0019] Figure 2 It is an expanded view of part of the structure of the utility model;

[0020] Figure 3 It is a bottom view of part of the structure of the utility model;

[0021] Figure 4 It is a structure diagram of the fixing device of the utility model.

[0022] In the figure: 1, the base plate; 2, support rod; 3, fixed plate; 4, sliding groove; 6, fixed block; 7, electric push rod; 8, lifting plate; 9, limit plate one; 10, limit plate two; 11, horizontal plate; 12, threaded cylinder; 13, threaded rod; 14, guide rod one; 15, ear plate; 16, round rod; 17, damping bearing; 18, rotating plate; 19, connecting plate; 20, pull rod; 21, baffle; 22, spring; 23, pressing plate; 24, guide rod two; 25, rubber pad. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme of the utility model carry out clearly, complete description, and the advantage is more clear and distinct, the following combining with the figure to the utility model embodiment carries out further detailed explanation.Should understand, the specific embodiment described here is a part of the embodiment of the utility model, instead of all the embodiments, only to explain the embodiment of the utility model, and is not used to limit the embodiment of the utility model, all other embodiments obtained by the ordinary skill in the art without making the creative labor belongs to the scope of the protection of the utility model.

[0024] Please refer to Figures 1 to 3 The utility model provides a kind of technical scheme: a test fixture for PCBA board, it include: base plate 1 and fixed plate 3, fixed plate 3 is equipped with two, the lower end of each fixed plate 3 front and back sides is fixedly installed with support rod 2, the lower end of support rod 2 is fixedly installed in the upper end four sides of base plate 1, two fixed plate 3 are supported up, one end of two fixed plate 3 is fixedly connected with limit plate one 9, the other end is slidably connected with limit plate two 10, the end of each fixed plate 3 is equipped with sliding groove 4, the left and right ends of limit plate two 10 are located in sliding groove 4, limit plate two 10 can slide in sliding groove 4, to change the distance between limit plate one 9 and limit plate two 10, different size PCBA board is clamped.

[0025] Limit plate two 10 and fixed plate 3 between being provided with driving component, driving component includes horizontal plate 11 and threaded rod 13, horizontal plate 11 is fixed on the outer wall of one end of two fixed plate 3, horizontal plate 11 is located at the outside of limit plate two 10, threaded cylinder 12 is fixedly installed at the middle of horizontal plate 11, threaded cylinder 12 penetrates the side wall of horizontal plate 11, the outer wall of threaded rod 13 and the inner wall of threaded cylinder 12 are threadedly connected, and one end of threaded rod 13 passes through threaded cylinder 12 and is rotationally connected with horizontal plate 11, the left and right ends of horizontal plate 11 are fixedly installed with guide rod one 14, the outer end of guide rod one 14 slides through fixed plate 3, by rotating threaded rod 13, threaded rod 13 moves in threaded cylinder 12, drives limit plate two 10 to slide in sliding groove 4, while guide rod one 14 slides in fixed plate 3, limit plate two 10 is guided.

[0026] The lower end of the two fixed plates 3 is fixedly provided with a fixed block 6, the upper end of the fixed block 6 is fixedly provided with an electric push rod 7, the upper end of the electric push rod 7 is fixedly connected with a lifting plate 8, the fixed block 6 is U-shaped, the left and right ends of the fixed block 6 are fixedly arranged on the lower end of the two fixed plates 3, the lifting plate 8 is located between the two fixed plates 3 and the upper end of the lifting plate 8 is flush with the lower end of the sliding groove 4, when the PCBA board is detected, the PCBA board is first placed on the upper end of the lifting plate 8, then the limiting plate two 10 is driven to move by rotating the threaded rod 13, the PCBA board is clamped by the limiting plate two 10 and the limiting plate one 9, and then the PCBA board can be detected, after the detection is completed, the threaded rod 13 is reversed to drive the limiting plate two 10 to reset, and then the electric push rod 7 is started to drive the lifting plate 8 to move upwards with the PCBA board to the upper end of the limiting plate one 9 and the limiting plate two 10, so that the PCBA board is convenient to take off.

[0027] As shown in Figure 1 and Figure 4 shown, in some embodiments, the upper end of the limiting plate one 9 is provided with a fixing device, the fixing device comprises an ear plate 15, the ear plate 15 is fixedly arranged on the outer end of the limiting plate one 9, the upper end of the ear plate 15 is fixedly provided with a round rod 16, the upper end of the round rod 16 is rotatably connected with a rotating plate 18 through a damping bearing 17, the other end of the rotating plate 18 is fixedly provided with a connecting plate 19 on the left and right sides, and the rotating plate 18 can rotate at the upper end of the round rod 16 through the damping bearing 17, so that the other end of the rotating plate 18 is convenient to rotate to the upper end of the PCBA board.

[0028] The other end of the rotating plate 18 is slidably connected with a pull rod 20, the lower end of the pull rod 20 penetrates through the rotating plate 18 and is fixedly provided with a pressing plate 23, the lower end of the pressing plate 23 is fixedly provided with a rubber pad 25, the upper end of the pressing plate 23 is fixedly provided with a guide rod two 24 on the left and right sides, the upper end of the guide rod two 24 slidably penetrates through the connecting plate 19, the outer end of the pull rod 20 is fixedly provided with a baffle 21, the outer end of the pull rod 20 is sleeved with a spring 22, the lower end of the spring 22 is fixedly arranged on the upper end of the baffle 21, the upper end of the spring 22 is fixedly arranged on the lower end of the rotating plate 18, and the upper end of the pull rod 20 can be fixedly provided with a pull ring or an anti-skid cap, so that the pull rod 20 is convenient to pull upwards, when the spring 22 is in a balanced state, the lower end of the rubber pad 25 is flush with the lower end of the limiting plate one 9, the rubber pad 25 is first moved to the upper end of the limiting plate one 9 by pulling the pull rod 20, the rubber pad 25 is then rotated to the outer side of the limiting plate one 9 by rotating the rotating plate 18, and then the PCBA board to be detected is placed on the upper end of the lifting plate 8, after the PCBA board is clamped by the limiting plate one 9 and the limiting plate two 10, the rubber pad 25 is rotated to the upper end of the PCBA board, and then the pull rod 20 is loosened, under the reaction force of the spring 22, the rubber pad 25 is pressed on the upper end of the PCBA board to fix the PCBA board.

[0029] When the device works, when detecting the PCBA board, first rotate the rotating plate 18 to rotate the rubber pad 25 to the outside of the limiting plate one 9, place the PCBA board on the upper end of the lifting plate 8, then drive the limiting plate two 10 to move through the rotating threaded rod 13, the limiting plate two 10 and the limiting plate one 9 clamp the PCBA board, then rotate the rubber pad 25 to the upper end of the PCBA board, then release the pull rod 20, under the reaction force of the spring 22, the rubber pad 25 is pressed on the upper end of the PCBA board to fix it, that is, it can be detected, after detection, reverse the threaded rod 13 to drive the limiting plate two 10 to reset, then start the electric push rod 7 to drive the lifting plate 8 with the PCBA board to move up to the upper end of the limiting plate one 9 and the limiting plate two 10, so as to facilitate taking down the PCBA board.

[0030] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A test fixture for a PCBA board, comprising: The bottom plate (1) and the fixed plate (3) are characterized in that: the fixed plate (3) is provided with two, and the lower end of each fixed plate (3) is fixedly installed with a support rod (2) on the front and rear sides, and the lower end of the support rod (2) is fixedly installed on the upper end of the bottom plate (1) on four sides; One end of the two fixed plates (3) is fixedly connected with a limiting plate one (9), and the other end is slidably connected with a limiting plate two (10), and a driving component is arranged between the limiting plate two (10) and the fixed plate (3), and the upper end of the limiting plate one (9) is installed with a fixing device; The lower end of the two fixed plates (3) is fixedly installed with a fixed block (6), and the upper end of the fixed block (6) is fixedly installed with an electric push rod (7) at the middle, and the upper end of the electric push rod (7) is fixedly connected with a lifting plate (8).

2. The test fixture for PCBA board according to claim 1, wherein: One end of each fixed plate (3) is provided with a sliding groove (4), and the left and right ends of the limiting plate two (10) are located in the sliding groove (4).

3. The test fixture for PCBA board according to claim 1, wherein: The driving component comprises a cross plate (11) and a threaded rod (13), the cross plate (11) is fixed on the outer wall of one end of the two fixed plates (3), a threaded cylinder (12) is fixedly installed at the middle of the cross plate (11), and the threaded cylinder (12) penetrates through the side wall of the cross plate (11).

4. The test fixture for PCBA board according to claim 3, wherein: The outer wall of the threaded rod (13) is threadedly connected with the inner wall of the threaded cylinder (12), one end of the threaded rod (13) penetrates through the threaded cylinder (12) and is rotatably connected with the cross plate (11), the left and right ends of the cross plate (11) are fixedly installed with guide rods one (14), and the outer ends of the guide rods one (14) slidably penetrate through the fixed plate (3).

5. The test fixture for PCBA board according to claim 1, wherein: The fixed block (6) is U-shaped, the left and right ends of the fixed block (6) are fixed on the lower ends of the two fixed plates (3) respectively, and the lifting plate (8) is located between the two fixed plates (3) and the upper end of the lifting plate (8) is flush with the lower end of the sliding groove (4).

6. The test fixture for PCBA board of claim 1, wherein: The fixing device comprises an ear plate (15), the ear plate (15) is fixedly installed on the outer end of the limiting plate one (9), a round rod (16) is fixedly installed on the upper end of the ear plate (15), a rotating plate (18) is rotatably connected with the upper end of the round rod (16) through a damping bearing (17), and the other end of the rotating plate (18) is fixedly installed with connecting plates (19) on the left and right sides.

7. The test fixture for a PCBA board of claim 6, wherein: The other end of the rotating plate (18) is slidably connected with a pull rod (20) at the middle, the lower end of the pull rod (20) penetrates through the rotating plate (18) and is fixedly installed with a pressing plate (23), and the lower end of the pressing plate (23) is fixedly installed with a rubber pad (25).

8. The test fixture for a PCBA board of claim 7, wherein: The upper ends of the pressing plate (23) are fixedly installed with guide rods two (24) on the left and right sides, the upper ends of the guide rods two (24) slidably penetrate through the connecting plates (19), the outer end of the pull rod (20) is fixedly installed with a baffle (21), the outer end of the pull rod (20) is sleeved with a spring (22), the lower end of the spring (22) is fixed on the upper end of the baffle (21), and the upper end of the spring (22) is fixed on the lower end of the rotating plate (18).

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