A programming test device for a circuit board

Abstract

The utility model discloses a kind of programming test devices for circuit board, including bottom plate, the vertical extension bracket of one side of bottom plate, and bracket side wall is equipped with the test pressboard for being used to carry out programming test, the fixed upward extension mounting table of bottom plate, the support seat is extended to the bottom plate upper end surface in the middle of mounting table bottom end, the both ends of support seat extend reset spring, its end portion is equipped with push rod and is hinged with support seat side wall middle part, the inside of support seat is equipped with a circular through-hole, circular rod is slid in the through-hole, two groups circular rod push rod is hinged and rotates on support seat. The utility model belongs to circuit board test technical field, specifically refers to a kind of programming test device for circuit board, aims at at least solving the problem that circuit board is clamped when programming test is not good, thereby leading to circuit board programming program interruption, or data write error problem, and traditional circuit board fixing mode has greater limitation, cannot be used to the problem of fixedly fixing circuit board.

Description

Technical Field

[0001] This utility model belongs to the field of circuit board testing technology, specifically referring to a device for programming and testing circuit boards. Background Technology

[0002] In the manufacturing process of electronic devices, the circuit board, as the core control unit, directly determines the quality of the final product through its performance and stability. Before leaving the factory, the circuit board needs to undergo key processes such as programming and functional testing. The programming and testing device is the core equipment for realizing this series of operations. It completes the program writing and electrical performance testing by precisely contacting the pads on the circuit board with probes.

[0003] Most current programming and testing devices on the market use simple clamping structures to fix circuit boards, such as side clamping, vacuum adsorption, and bottom support. However, these fixing methods generally suffer from insufficient stability: for side clamping, due to the size differences of different circuit board models, the adjustment precision of the clamp is limited, which can easily lead to the circuit board shifting due to loose clamping or the circuit board edge deformation due to excessive clamping; vacuum adsorption is greatly affected by the flatness of the circuit board surface. When there are depressions or openings on the board surface, the adsorption force will be greatly reduced, and it will not form an effective fixation; bottom support can only support the circuit board locally. During the test, the pressure generated by the probe contacting the pads can easily cause the circuit board to warp, resulting in misalignment of the contact points.

[0004] Unstable circuit board mounting directly affects the accuracy and reliability of programming tests: on the one hand, the probes and pads cannot maintain stable contact, which may lead to programming program interruptions, data writing errors, and ultimately, the scrapping of the circuit board; on the other hand, poor contact can also cause abnormal test signal transmission, increasing the false positive rate, which in turn increases production costs and reduces production efficiency. Therefore, there is an urgent need for a programming test device that can stably fix the circuit board to overcome the shortcomings of existing technologies. Utility Model Content

[0005] The present invention aims to at least solve the problems of poor clamping stability during circuit board programming tests, which leads to interruption of the circuit board programming program or data writing errors, as well as the limitations of traditional circuit board fixing methods, which cannot provide universal fixing of circuit boards.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: This utility model proposes a circuit board programming test device, including a base plate, a bracket extending vertically from one side of the base plate, and a test pressure plate for programming test installed on the side wall of the bracket. The base plate extends upward to form a mounting platform, and a support base extends from the middle of the bottom end of the mounting platform to the upper surface of the base plate. The two ends of the support base extend into return springs, and the ends of the springs are provided with push rods that are hinged to the middle of the side wall of the support base. A circular through hole is opened laterally inside the support base, and two sets of symmetrical round rods slide in the through hole. The two sets of round rods extend out of the through hole from one side, pushing the push rod to rotate hingedly on the support base.

[0007] The mounting platform is provided with a through groove and the through groove is parallel to the through hole. Two sets of sliders are slidably arranged in the through groove. The sliders are hinged to the upper end of the push rod. The other end of the slider is provided with a limiting plate perpendicular to the through groove. The two symmetrical limiting plates work together to clamp the limiting circuit board.

[0008] Furthermore, a rectangular hole runs through the center of the support base, and the through hole and the round rod pass through the square hole laterally. A triangular push block is provided inside the square hole. The two inclined surfaces of the push block contact the two end faces of the push rod respectively. A cylinder is provided on one side of the push block. The cylinder pushes the push block to move inside the square block. The cylinder is fixed to the base plate by a support frame.

[0009] Furthermore, the test plate is located above the mounting platform, and a sliding rod is provided above the test plate. A base is installed on the bracket, and a V-shaped connector is provided on the base. A handle is hinged to the upper end of the connector, and a sleeve is fixedly connected to the lower end. The sliding rod extends and retracts within the sleeve. The corner of the handle is connected to the upper end of the sliding rod by two sets of steel plates.

[0010] Furthermore, several sets of pin headers for programming tests extend from below the test plate.

[0011] Furthermore, a baffle is fixedly provided on one side of each of the two sets of limiting plates. The limiting plates and the baffles are orthogonally arranged, and the limiting plates and the baffles together clamp the circuit board.

[0012] The beneficial effects of this utility model by adopting the above structure are as follows:

[0013] 1. The traditional side clamping and vacuum adsorption fixing methods are changed to a double-sided limiting plate fixing method with adjustable size, so that different types of circuit boards can be stably fixed and programmed for testing.

[0014] 2. Use the triangular push block to slowly push the push rod to adjust the position of the limit plate, ensuring that the circuit board will not be damaged due to rapid positioning during the fixing process, thus affecting the burning test results. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of the present invention;

[0016] Figure 2 This is a structural diagram of the circuit board mounting portion of this utility model;

[0017] Figure 3 Perspective view of the through hole on the mounting platform;

[0018] Figure 4 This is a partial cross-sectional view of the present invention;

[0019] Figure 5 This is a schematic diagram of the push block operation.

[0020] The components are as follows: 1. Base plate, 2. Bracket, 3. Test pressure plate, 4. Mounting platform, 5. Support base, 6. Reset spring, 7. Push rod, 8. Through hole, 9. Round rod, 10. Through groove, 11. Slider, 12. Limiting plate, 13. Square hole, 14. Push block, 15. Cylinder, 16. Support frame, 17. Slide rod, 18. Base, 19. Connector, 20. Handle, 21. Sleeve, 22. Steel sheet, 23. Pin array, 24. Baffle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example 1:

[0024] As per the instruction manual Figure 1-5As shown, a circuit board programming test device includes a base plate 1, a support 2 extending vertically from one side of the base plate 1, and a test pressure plate 3 for programming tests installed on the side wall of the support 2. The test pressure plate 3 is located above the mounting platform 4, and a slide rod 17 is provided above the test pressure plate 3. A base 18 is installed on the support 2, and a V-shaped connector 19 is provided on the base 18. A handle 20 is hinged to the upper end of the connector 19, and a sleeve 21 is fixedly connected to the lower end. The slide rod 17 extends and retracts vertically within the sleeve 21. The corner of the handle 20 is hinged to the upper end of the slide rod 17 through two sets of steel plates 22. Several sets of pin headers 23 for programming tests extend from the lower part of the test pressure plate 3. The pin headers 23 and the test pressure plate 3 are existing technologies. Different sizes and corresponding positions of pin headers 23 are selected for programming tests according to the circuit board to be tested.

[0025] A mounting platform 4 extends upward from the base plate 1. A support base 5 extends from the middle of the bottom of the mounting platform 4 to the upper surface of the base plate 1. A rectangular hole 13 passes through the middle of the support base 5. Return springs 6 extend from both ends of the support base 5, and push rods 7 are provided at their ends. The push rods 7 are hinged to the middle of the side wall of the support base 5. A circular through hole 8 is opened laterally inside the support base 5. Two sets of symmetrical round rods 9 slide in the through hole 8. One side of each set of round rods 9 extending out of the through hole 8 pushes the push rod 7 to rotate hingedly on the support base 5. The through hole 8 and the round rods 9 pass laterally through the square hole 13. A triangular push block 14 is provided in the square hole 13. The two inclined surfaces of the push block 14 are respectively aligned with the rectangular hole 13. The two ends of the push rod 7 are in contact. A cylinder 15 is provided on one side of the push block 14. The cylinder 15 pushes the push block 14 to move within the block. The cylinder 15 is fixed to the base plate 1 by the support frame 16. The mounting platform 4 is provided with a through groove 10 and the through groove 10 is parallel to the through hole 8. Two sets of sliders 11 are slidably provided in the through groove 10. The sliders 11 are hinged to the upper end of the push rod 7. The other end of the slider 11 is provided with a limiting plate 12 perpendicular to the through groove 10. A baffle 24 is fixed on one side of the two sets of symmetrical limiting plates 12. The limiting plates 12 and the baffle 24 are orthogonally arranged. The limiting plates 12 and the baffle 24 together clamp the circuit board.

[0026] In the specific implementation of this utility model, after installing the corresponding test pressure plate 3 and pin header 23, the circuit board to be tested is placed between the two sets of limiting plates 12, and one set of baffles 24 is aligned with it. The limiting plate 12 and the baffle 24 are orthogonally arranged to clamp one corner of the circuit board. Then, the user starts the cylinder 15, which pushes the triangular push block 14 forward in the square hole 13. At this time, the round rod 9 that contacts both sides of the push block 14 is pushed and slides along the through hole 8, thereby using the end extending from the through hole 8 to push the push block 14 forward. Since the push rod 7 and the support base 5 are hinged (and the hinge position is higher than the through hole 8), the round rod 9 pushes the push rod 7 to make lever motion around the hinge position. The upper end of the push rod 7 drives the slider 11 to slide in the slide groove 10. At this time, the two sets of reset springs 6 are stretched, and the two sets of limit plates 12 move relative to each other and together with the baffle 24 clamp and fix the circuit board, which is convenient for burning and testing. After the burning and testing contact, after the reverse start cylinder 15 is activated, the push rod 7 is reset under the action of the reset spring 6 and the round rod 9 is pushed into the through hole 8.

[0027] After the circuit board is fixed, hold the handle 20 and press down. Under the hinge action of the connector 19, the handle 20 drives the steel plate 22 to hinge, thereby linking the slide rod 17 to extend and retract up and down in the sleeve 21. The slide rod 17, together with the test plate 3 and the pin header 23, is pressed down to contact the circuit board, thereby performing the programming test. In this way, the test plate 3 can be replaced (it can be removed from the slide rod 17; the slide rod 17 can be connected to the test plate 3 using existing snap-fit ​​connections, threaded connections, etc.) to perform programming tests on different circuit boards. Moreover, the two sets of symmetrical limiting plates 12 can adjust the fixed distance to the circuit board, and can be firmly clamped when programming tests on different circuit boards.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0029] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A circuit board programming test apparatus, comprising a base plate (1), wherein a bracket (2) extends vertically from one side of the base plate (1), and a test pressure plate (3) for performing programming tests is mounted on the side wall of the bracket (2), characterized in that: The base plate (1) extends upward to form a mounting platform (4). The mounting platform (4) extends from the middle of its bottom end to the upper surface of the base plate (1) to form a support base (5). The two ends of the support base (5) extend to form a return spring (6). The end of the spring is provided with a push rod (7), and the push rod (7) is hinged to the middle of the side wall of the support base (5). A circular through hole (8) is opened horizontally inside the support base (5). Two sets of symmetrical round rods (9) slide in the through hole (8). The two sets of round rods (9) extend out of the through hole (8) on one side, which pushes the push rod (7) to rotate hinged on the support base (5). The mounting platform (4) is provided with a through groove (10) and the through groove (10) is parallel to the through hole (8). Two sets of sliders (11) are slidably provided in the through groove (10). The sliders (11) are hinged to the upper end of the push rod (7). The other end of the sliders (11) is provided with a limiting plate (12) perpendicular to the through groove (10). The two symmetrical limiting plates (12) work together to clamp the limiting circuit board.

2. The circuit board programming and testing apparatus according to claim 1, characterized in that: The support base (5) has a rectangular hole (13) through the middle. The through hole (8) and the round rod (9) pass through the square hole (13) laterally. A triangular push block (14) is provided in the square hole (13). The two inclined surfaces of the push block (14) are in contact with the two end faces of the push rod (7). A cylinder (15) is provided on one side of the push block (14). The cylinder (15) pushes the push block (14) to move in the square. The cylinder (15) is fixed on the base plate (1) by the support frame (16).

3. The circuit board programming and testing apparatus according to claim 2, characterized in that: The test plate (3) is located above the mounting platform (4). A sliding rod (17) is provided above the test plate (3). A base (18) is installed on the bracket (2), and a V-shaped connector (19) is provided on the base (18). A handle (20) is hinged to the upper end of the connector (19), and a sleeve (21) is fixedly connected to the lower end. The sliding rod (17) extends and retracts inside the sleeve (21). The corner of the handle (20) is hinged to the upper end of the sliding rod (17) through two sets of steel plates (22).

4. The circuit board programming and testing apparatus according to claim 3, characterized in that: Several sets of pin headers (23) for programming tests extend from the bottom of the test plate (3).

5. The circuit board programming and testing apparatus according to claim 1, characterized in that: A baffle (24) is fixedly provided on one side of each of the two sets of limiting plates (12). The limiting plates (12) and the baffle (24) are orthogonally arranged, and the limiting plates (12) and the baffle (24) together clamp the circuit board.

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