Integrated circuit board detection tool clamp

Abstract

An integrated circuit board detection tool clamp comprises a pedestal which is internally provided with a cavity used for placing a detection loop; the probe plate is detachably arranged above the base, a plurality of probes are arranged on the surface of the probe plate, and the probe plate is electrically connected with the detection loop; the positioning clamping table is arranged above the probe plate in an axial moving manner and is used for positioning the integrated circuit board to be detected; the pressing mechanism is arranged above the to-be-tested integrated circuit board and can be stressed to move downwards to enable the to-be-tested integrated circuit board arranged in the positioning clamping table to be tightly attached to the probe of the probe board; the trigger switch is arranged on any side of the base and used for controlling work of the detection loop, and a trigger piece used for triggering the trigger switch is arranged at the bottom of the pressing mechanism. By adopting the replaceable probe board and combining with the positioning clamping table, rapid replacement of the integrated circuit board to be detected can be realized, the clamping time is reduced, the detection requirements of the integrated circuit boards of different models can be met, and the trigger switch is utilized, so that the operation process of operators is simplified, and the effect of pressing and directly starting detection is achieved.

Description

Technical Field

[0001] The utility model specifically relates to a jig for detecting an integrated circuit board. Background Art

[0002] With the rapid development of integrated circuit technology, the integration degree of circuit boards is getting higher and higher, and the functions are getting more and more complex. This requires that test tools and equipment can achieve efficient and rapid screening. At the same time, in order to reduce the interference of human factors on test results, more user-friendly interaction designs need to be carried out on test tools and equipment. With the deepening of the social industrialization process, more and more enterprises have started to engage in flexible production models, with low single-batch production, many specifications and types, and rapid production response. Therefore, higher requirements are put forward for quality testing. Content of the Utility Model

[0003] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a jig for detecting an integrated circuit board.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A jig for detecting an integrated circuit board, which includes:

[0006] A base, which is provided with a cavity inside for placing a detection circuit;

[0007] A probe board, which is detachably arranged above the base, and a plurality of probes are arranged on its surface and are electrically connected to the detection circuit;

[0008] A positioning clamping table, which is axially movable above the probe board for positioning the integrated circuit board to be tested;

[0009] A pressing mechanism, which is arranged above the integrated circuit board to be tested, and can move downward under force to closely fit the integrated circuit board to be tested placed on the positioning clamping table with the probes of the probe board;

[0010] A trigger switch, which is arranged on any side of the base for controlling the operation of the detection circuit, and a trigger part for triggering the trigger switch is arranged at the bottom of the pressing mechanism.

[0011] The trigger switch is arranged below the positioning clamping table, and the positioning clamping table moves downward synchronously with the downward pressing of the pressing mechanism and triggers the trigger switch.

[0012] The positioning clamping table is of a frame structure, and a step for supporting the integrated circuit board to be tested is arranged inside it, and positioning pins are arranged on the step.

[0013] An opening for avoiding the trigger switch is arranged on one side of the probe board.

[0014] A bracket is provided on the base, and the pressing mechanism is slidably arranged on the bracket.

[0015] The pressing mechanism includes a pressing device slidably arranged on the bracket and a driving device for driving the pressing device to move.

[0016] The driving device includes a mounting frame with a guiding hole, a manual lever rotatably arranged on the mounting frame, a push rod movably arranged in the guiding hole, and a connecting rod connecting the manual lever and the push rod. One end of the manual lever is pivotally connected to the mounting frame, the connecting rod is pivotally connected to the middle position of the manual lever, and the manual lever can drive the push rod to move along the axis direction of the guiding hole through the connecting rod.

[0017] A slider is provided at the bottom of the pressing device, a guide rail is correspondingly provided on the bracket, and the slider and the guide rail form a sliding fit.

[0018] The positioning clamping table is axially movably arranged above the base through a plurality of reset ejector pins.

[0019] A plurality of indicator lights and interfaces are also provided on the base.

[0020] The beneficial effects of the present utility model: By adopting a replaceable probe board and combining with a positioning clamping table, rapid replacement of the integrated circuit board to be tested can be realized, the clamping time is reduced, and at the same time, the detection requirements of different models of integrated circuit boards can be met. Meanwhile, by using a trigger switch, the operation process of the operator is simplified, and the effect of directly starting the detection when pressing is achieved. Brief Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the present utility model.

[0022] Figure 2 It is a side schematic diagram of the present utility model.

[0023] Figure 3 It is a schematic structural diagram of the probe board and the positioning clamping table on the base.

[0024] Figure 4 It is an internal schematic diagram of the base of the present utility model.

[0025] Figure 5 It is a three-dimensional schematic diagram of the base of the present utility model.

[0026] Figure 6 It is a top view of the base of the present utility model. Detailed Description of the Embodiment

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0029] As Figure 1 、 Figure 2 and Figure 3 shown, the present utility model discloses an integrated circuit board detection tooling fixture, which includes: a base 100, a probe board, a positioning clamping table and a pressing mechanism arranged on the base.

[0030] The base 100 is provided with a cavity inside for placing a detection circuit. As Figure 4 shown, it is a circuit for supplying power to the integrated circuit board to be tested, that is, it at least includes a resistor connecting a travel switch and a test indicator light, and positive and negative power supply terminals connected to the probe board. Preferably, a power supply circuit can also be set, that is, a power switch and a power indicator light are set to realize the indication of power supply access.

[0031] The probe board 200 is detachably arranged above the base 100. Its surface is provided with a plurality of probes 210 and is electrically connected to the detection circuit. Among them, the probes can adopt conventional test needles, and there is a certain elastic displacement amount between the detection points and the needle tubes, so as to ensure reliable contact at each contact point. This point is a conventional technology and is not shown in the figure.

[0032] At the same time, the probe board 200 is fixed on the upper side of the base by screws or bolts. By replacing the probe board, the detection requirements for different models of circuit boards can be realized. Its replacement is convenient and only needs to loosen or tighten the screws or bolts to complete the replacement.

[0033] The positioning clamping table 300 is axially movable above the probe board 200 and is used for positioning the integrated circuit board to be tested. The inside of the positioning clamping table is used to place the integrated circuit board to be tested. In order to realize the contact between the integrated circuit board to be tested and the probe board, it is preferably a through structure, so that the integrated circuit board to be tested placed inside can directly contact the probe board, and its outer frame is used for circuit board positioning. Different models or different sizes of the integrated circuit boards to be tested can be positioned by changing the position of the positioning pins inside or replacing the entire positioning clamping table.

[0034] That is, by replacing some components, it can adapt to the testing of circuit boards of different models, reducing the development cost and usage cost of the jig.

[0035] The pressing mechanism 400 is arranged above the integrated circuit board to be tested. It can move downward under force to closely fit the integrated circuit board to be tested placed in the positioning clamping table 300 with the probes of the probe board 200. It mainly provides the force for the integrated circuit board to be tested to move downward and contact the probes of the probe board.

[0036] The trigger switch 500 is arranged on any side of the base 100 for controlling the conduction of the detection circuit. And a trigger member for triggering the trigger switch is arranged at the bottom of the pressing mechanism 400. This trigger member can extend from the bottom of the pressing mechanism, or directly drive the positioning clamping table to act through the pressing mechanism, that is, directly use the positioning clamping table as the trigger member.

[0037] The trigger switch 500 is arranged below the positioning clamping table 300, and the positioning clamping table 300 moves downward synchronously with the downward pressing of the pressing mechanism 400 and triggers the trigger switch 500.

[0038] The positioning clamping table 300 is of a frame structure. A step 310 for supporting the integrated circuit board to be tested is arranged inside it, and a positioning pin 320 is arranged on the step 310. The step is used to support the integrated circuit board to be tested, and the design of the positioning pin improves the contact accuracy between the circuit board and the probe and reduces external interference factors.

[0039] In addition, the design of the step can also enable the pressing mechanism to drive the entire positioning clamping table to move downward when pressing the circuit board.

[0040] At the same time, through the asymmetric design of the positioning pins, it can also play a role in preventing misoperation, avoiding the wrong placement direction of the circuit board and causing damage to the circuit board during testing.

[0041] An opening 220 for avoiding the trigger switch 500 is arranged on one side of the probe board 200. The opening plays a role in avoidance, enabling the trigger switch to be directly located below the positioning clamping table and being triggered directly by the downward movement of the positioning clamping table. Or the size of the positioning clamping table can be directly increased so that the projection area of the positioning clamping table covers the trigger switch. In this way, the design of the opening can be omitted, and the design of the opening can reduce costs, and it can be selected according to requirements.

[0042] A bracket 700 is provided on the base 100. The pressing mechanism 400 is slidably arranged on the bracket 700. The bracket is used to fix the pressing mechanism so that the pressing mechanism is located above the integrated circuit board to be tested within the positioning clamping table. At the same time, the bracket arranged on one side can reduce the interference with the picking and placing of the integrated circuit board to be tested and improve the efficiency of clamping the circuit board.

[0043] The pressing mechanism 400 includes a pressing device 410 slidably arranged on the bracket 700 and a driving device for driving the pressing device 410 to move. The driving device can be manual or automatic.

[0044] The manual method is as follows: The driving device includes a mounting frame 430 having a guiding hole 460, a manual lever 440 rotatably arranged on the mounting frame 430, a push rod 470 movably arranged in the guiding hole 460, and a connecting rod 450 connecting the manual lever 440 and the push rod 470. One end of the manual lever 440 is pivotally connected to the mounting frame 430. The connecting rod 450 is pivotally connected to the middle position of the manual lever 440, and the manual lever 440 can drive the push rod 470 to move along the axis direction of the guiding hole 460 through the connecting rod 450.

[0045] The driving device includes a mounting frame having a guiding hole, a manual lever rotatably arranged on the mounting frame, a push rod movably arranged in the guiding hole, and a connecting rod connecting the manual lever and the push rod. One end of the manual lever is pivotally connected to the mounting frame. The connecting rod is pivotally connected to the middle position of the manual lever, and the manual lever can drive the push rod to move along the axis direction of the guiding hole through the connecting rod.

[0046] If an automatic method is adopted, the driving device can be replaced with a motor or a hydraulic cylinder, and the pressing device is driven to move downward by a servo motor or a hydraulic cylinder.

[0047] A slider 420 is provided at the bottom of the pressing device 410. A guide rail 710 is correspondingly provided on the bracket 700. The slider 420 and the guide rail 710 form a sliding fit. The guide rail can adopt a linear guide rail or a guide rod, that is, to ensure the relative linear movement of the pressing device and can directly act on the integrated circuit board to be tested.

[0048] In order to reduce the impact on the integrated circuit board, a plurality of ejector rods are arranged on the pressing surface of the pressing device, and the ejector rods are used to contact the integrated circuit board to be tested to avoid damaging the components arranged thereon.

[0049] The positioning clamping table 300 is axially movably arranged above the base 100 through a plurality of reset ejector pins 600.

[0050] The design of the reset ejector pin has a certain buffering effect on the downward positioning clamping table, avoiding the directly pressing of the pressed integrated circuit board on the probe board and damaging the probes on the probe board. Secondly, the elastic reset force of the reset ejector pin itself can drive the positioning clamping table to reset when the pressure of the pressing device is released.

[0051] The trigger switch 500 is a travel switch. At the same time, the trigger switch can also be a bridge switch, a touch switch, etc. It uses the action of the downward movement of the positioning clamping table or the pressing mechanism to trigger its switch end, making the switch closed, and then making the detection circuit conductive.

[0052] It directly combines the action of starting the detection with the downward pressing action, which can reduce the operation process of the operator and improve the detection efficiency.

[0053] Several indicator lights and interfaces are also provided on the base 100. Among them, the indicator lights include a power indicator light and a test indicator light. The power indicator light is used as the power-on indication, while the test indicator light indicates the completion of the test, so that it can be directly understood whether the test of the integrated circuit board to be tested has been completed. The interfaces include a bus interface and a power interface. The power interface is used to connect to an external power supply, and the bus interface is used to connect to an external test module. At the same time, the bus interface is also connected to each probe, used to transmit the signals of each probe to the test module connected to it, and complete the test at the test module. At the same time, a standardized bus design is adopted, which is convenient and fast to communicate and connect with the test module or the host computer.

[0054] As Figure 4 shown, this application only involves the circuit in the virtual box. The test module is not a component of this fixture and is another product, so it will not be described in detail. It mainly includes a control module, a sampling module and a power module. The control module is designed based on the chip MCU, and its specific circuit is as Figure 5 shown. The sampling module is used for signal acquisition of each probe, and its specific acquisition circuit is as Figure 6 shown. The power module uses a conventional switching power supply to achieve voltage reduction and voltage stabilization of the power supply, so it will not be described. At the same time, in order to achieve data transmission, it also has an RS485 communication circuit, and the specific principle of this circuit can refer to the existing communication circuit.

[0055] The specific operation process of the present utility model is as follows. During the test, place the circuit board to be tested on the test clamping table, turn on the power switch, and the power indicator light will light up. Press down the handle, and the connecting rod drives the push rod to push the pressing device to clamp the circuit board to be tested together with the positioning clamping table. At the same time, move downward together until the travel switch is triggered and the test indicator light lights up. The probe module contacts the test points on the back of the circuit board, and the circuit board to be tested is in the powered-on state. When both indicator lights are on, it means that the circuit board is in the test state. The bus interface is connected to the test module for data processing, and finally the test results are output by the display device. After the test is completed, lift the handle upward, the connecting rod drives the push rod to pull the pressing device upward, and the reset thimble pushes the test clamping table upward to separate the circuit board from the test thimble. At the same time, the travel switch is disconnected, and the clamping indicator light and the power indicator light go out, and the test ends.

[0056] The embodiments should not be regarded as a limitation to the present utility model, but any improvement based on the spirit of the present utility model should be within the protection scope of the present utility model.

Claims

1. An integrated circuit board detection tooling fixture, characterized in that: It includes: A base (100) with a cavity inside for placing a detection circuit; A probe board (200) detachably arranged above the base (100), with a number of probes (210) on its surface and electrically connected to the detection circuit; A positioning clamping table (300) axially movably arranged above the probe board (200) for positioning an integrated circuit board to be tested; A pressing mechanism (400) arranged above the integrated circuit board to be tested, which can move downward under force to closely fit the integrated circuit board to be tested placed on the positioning clamping table (300) with the probes of the probe board (200); A trigger switch (500) arranged on any side of the base (100) for controlling the operation of the detection circuit, and a trigger member for triggering the trigger switch is arranged at the bottom of the pressing mechanism (400).

2. The integrated circuit board detection tooling fixture according to claim 1, wherein: The trigger switch (500) is arranged below the positioning clamping table (300), and the positioning clamping table (300) moves downward synchronously with the downward pressing of the pressing mechanism (400) and triggers the trigger switch (500).

3. An integrated circuit board detection tooling fixture according to claim 1, characterized in that: The positioning clamping table (300) is of a frame structure, with a step (310) for supporting the integrated circuit board to be tested on its inner side, and a positioning pin (320) is arranged on the step (310).

4. The fixture for detecting an integrated circuit board according to claim 1, wherein: An opening (220) for avoiding the trigger switch (500) is arranged on one side of the probe board (200).

5. A fixture for detecting an integrated circuit board according to claim 1, characterized in that: A bracket (700) is arranged on the base (100), and the pressing mechanism (400) is slidably arranged on the bracket (700).

6. The fixture for detecting an integrated circuit board according to claim 5, wherein: The pressing mechanism (400) includes a pressing device (410) slidably arranged on the bracket (700) and a driving device for driving the pressing device (410) to move.

7. The fixture for detecting an integrated circuit board according to claim 6, wherein: The driving device includes a mounting frame (430) with a guiding hole (460), a manual pressing rod (440) rotatably arranged on the mounting frame (430), a push rod (470) movably arranged in the guiding hole (460), and a connecting rod (450) connecting the manual pressing rod (440) and the push rod (470). One end of the manual pressing rod (440) is pivotally connected to the mounting frame (430), the connecting rod (450) is pivotally connected to the middle position of the manual pressing rod (440), and the manual pressing rod (440) can drive the push rod (470) to move along the axis direction of the guiding hole (460) through the connecting rod (450).

8. The fixture for detecting an integrated circuit board according to claim 6, characterized in that: A slider (420) is arranged at the bottom of the pressing device (410), and a guide rail (710) is correspondingly arranged on the bracket (700), and the slider (420) and the guide rail (710) form a sliding fit.

9. A jig for detecting an integrated circuit board according to claim 1, characterized in that: The positioning clamping table (300) is axially movably arranged above the base (100) through a number of reset ejector pins (600).

10. The jig for detecting an integrated circuit board according to claim 1, wherein: A number of indicator lights and interfaces are also arranged on the base (100).

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