FCT test fixture with protection function

Abstract

The utility model relates to FCT test fixture field especially, it relates to a kind of FCT test fixture with protection function. Including base, the upper surface of base is equipped with support frame, the upper surface of base is equipped with several probes on the position corresponding support frame, the inner wall of support frame is equipped with adjusting structure, the adjusting structure includes bidirectional screw rod, the bidirectional screw rod is rotatably connected with support frame, the thread of the both ends of bidirectional screw rod is opened with opposite thread direction, the two clamping arms of the camber surface of bidirectional screw rod are connected, the inner wall of support frame is fixedly connected with round bar, the camber surface of round bar is slidably connected with clamping arm, the inner wall of clamping arm is fixedly connected with baffle.The utility model provides a kind of FCT test fixture with protection function has to the quick, accurate positioning and clamping of anti-static support box, can be adapted to different sizes support box, improve the versatility and change line efficiency of test fixture.

Description

Technical Field

[0001] This utility model relates to the field of FCT test fixtures, and in particular to an FCT test fixture with protective function. Background Technology

[0002] FCT test fixtures are a key piece of equipment in the manufacturing of electronic products. They are mainly used to perform functional tests on assembled circuit boards (PCBAs). The probes on the fixture are precisely aligned with the test points on the circuit board to simulate the real working environment of the circuit board.

[0003] Existing technologies, such as the utility model with publication number CN222866818U, disclose an FCT test fixture. This patent includes a fixture base, a test platform fixedly connected to the upper surface of the fixture base, a movable plate rotatably connected to the inner side of the test platform, a workpiece placed on the upper surface of the movable plate, and a first U-shaped plate fixedly installed on the lower surface of the movable plate. In this utility model, the movable plate can rotate upward to allow the workpiece to slide onto an inclined slide. Then, an L-shaped connecting plate can drive the workpiece on the inclined slide to move forward, so as to remove the workpiece from the test platform, thereby improving the convenience of workpiece removal. Through the opposite movement of two push plates, two elastic telescopic U-shaped seats can adapt to approach the two ends of the workpiece. In this way, the rubber rollers at the two workpieces can fit and clamp the workpiece, improving the stability of the workpiece during testing. At the same time, the rubber rollers can reduce the clamping force and ensure the safety of the workpiece.

[0004] The inventors discovered the following problems in the use of testing fixtures during their daily work: the support mechanism of traditional fixtures is usually fixed or has a limited range of adjustment, resulting in poor versatility. When the production line needs to replace different models of circuit boards, it is often necessary to replace the entire support box or even the main body of the fixture, which takes a long time to change lines and is cumbersome to adjust, seriously affecting testing efficiency and failing to meet the flexible production needs of "multiple varieties and small batches". Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as fixed fixture dimensions and poor versatility.

[0006] To solve the above technical problems, this utility model provides an FCT test fixture with protective function, comprising: a base, a bracket fixedly connected to the upper surface of the base, an operating handle installed at the upper end of the bracket, a support frame installed on the upper surface of the base, and a plurality of probes installed on the upper surface of the base corresponding to the positions of the support frame. The inner wall of the support frame is provided with an adjustment structure, the adjustment structure including a bidirectional screw, the bidirectional screw being rotatably connected to the support frame, and the two ends of the bidirectional screw having threads with opposite directions. The arc surface of the bidirectional screw is threaded... The support frame has two clamping arms. A round rod is fixedly connected to the inner wall of the support frame. The arc surface of the round rod is slidably connected to the clamping arm. A baffle is fixedly connected to the inner wall of the clamping arm. Two positioning rods are slidably connected to the inner wall of the baffle. A spring is fixedly connected to the end of each positioning rod near the clamping arm. The end of the spring away from the positioning rod is fixedly connected to the clamping arm. A connecting rod is fixedly connected to the surface of the two positioning rods. A support box is abutted on the side of the two clamping arms that are close to each other. Several positioning holes are opened on both sides of the support box. The inner wall of the positioning hole is slidably connected to the positioning rod.

[0007] The aforementioned components achieve the following effects: they enable rapid and precise positioning and clamping of the anti-static support box, are adaptable to support boxes of different sizes, and improve the versatility of the test fixture and the efficiency of line replacement.

[0008] Preferably, the support box is an anti-static bakelite box, and the inner wall of the support box has a plurality of pinholes.

[0009] The effects achieved by the above components are as follows: black bakelite usually has anti-static properties, which effectively prevents static electricity accumulation during testing from damaging the precision circuit board. At the same time, the pinhole provides a precise path for the probe to pass through, ensuring the accuracy of the test.

[0010] Preferably, a scale is provided on the upper surface of the support frame corresponding to the position of the bidirectional screw, and a pull ring is fixedly connected to the side of the connecting rod near the spring.

[0011] The effects achieved by the above components are as follows: the scale provides a visual reference for the spacing, making the adjustment of the clamp arm more precise; the pull ring makes it easy for the operator to pull the connecting rod to disengage the positioning rod from the positioning hole, making the operation labor-saving and convenient.

[0012] Preferably, the inner wall of the clamping arm is fixedly connected to two sliding rods, and the arc surface of the sliding rods is slidably connected to the positioning rod.

[0013] The effect achieved by the above components is that the slide bar provides additional guidance and support for the sliding of the positioning rod, ensuring the stability of the positioning rod during movement, and enabling it to be more accurately aligned with and inserted into the positioning hole of the support box.

[0014] Preferably, the lower end of the operating handle is provided with an auxiliary structure, the auxiliary structure including a pressure plate, the pressure plate being fixedly connected to the operating handle, the surface of the pressure plate being provided with an auxiliary groove, the inner wall of the auxiliary groove being movably connected with a plurality of auxiliary tubes, the inner wall of the auxiliary tubes being threadedly connected with a pressure rod, and the upper surface of the auxiliary tubes being threadedly inserted with a limiting rod.

[0015] The aforementioned components achieve the following effect: they allow the pressure bar to be flexibly adjusted in both horizontal and vertical directions, thereby stably holding circuit boards of different sizes under test, preventing them from shifting or bouncing during testing, and ensuring the stability and safety of the testing process.

[0016] Preferably, a protective head is fixedly connected to the lower end of the pressure rod, and the protective head is a rubber head.

[0017] The effect achieved by the above-mentioned components is that the rubber protective head is soft and avoids scratching the board surface or damaging the precision components on the board when pressing the circuit board, thus playing a good protective role.

[0018] Preferably, the arc surface of the auxiliary tube and the upper end of the pressure rod are both fixedly connected with a number of anti-slip protrusions, and the number of anti-slip protrusions are evenly distributed on the auxiliary tube and the pressure rod.

[0019] The effect achieved by the above components is that the anti-slip protrusions increase the friction between the hand and the components, making it easier and less slippery when rotating and adjusting the auxiliary tube and pressure rod, thus improving the convenience and experience of operation.

[0020] Compared with related technologies, the FCT test fixture with protective function provided by this utility model has the following beneficial effects: This utility model provides an FCT test fixture with protective function. By setting an adjustment structure, two clamping arms are driven to move synchronously in opposite directions by a bidirectional screw. Combined with the scale indication, it can accurately adapt to various anti-static support boxes of different sizes, which greatly improves the versatility and line change efficiency of the fixture. The positioning rod automatically springs into the positioning hole on the side of the support box under the action of spring force, which not only ensures the accurate alignment of the support box on the horizontal plane and prevents it from moving back, forth, left, and right, but also provides a basis for subsequent clamping operations, making the entire clamping process efficient, reliable and easy to operate.

[0021] By setting up auxiliary structures, operators can flexibly adjust the position of each pressure bar on the horizontal plane and its extension length according to the actual size and center of gravity distribution of the circuit board, thereby achieving stable pressing of circuit boards of different sizes and layouts. This pressing method can effectively prevent the circuit board from shifting or bouncing due to probe contact or equipment vibration during the test, ensuring the stability of the test connection and the consistency of the results. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of an FCT test fixture with protective function provided by this utility model; Figure 2 for Figure 1 The diagram shows the structural schematic of the adjustment structure. Figure 3 for Figure 2 The diagram shows the disassembled structure of the clamping arm; Figure 4 for Figure 1 The diagram shows the structure of the auxiliary structure. Figure 5 for Figure 4 A partial structural diagram of the auxiliary structure shown.

[0023] The following are the labels in the diagram: 1. Base; 2. Bracket; 3. Operating handle; 4. Support frame; 5. Probe; 6. Adjustment structure; 601. Two-way screw; 602. Clamping arm; 603. Round rod; 604. Scale; 605. Baffle; 606. Positioning rod; 607. Spring; 608. Connecting rod; 609. Pull ring; 610. Slide rod; 611. Support box; 612. Positioning hole; 7. Auxiliary structure; 71. Pressure plate; 72. Auxiliary groove; 73. Auxiliary tube; 74. Pressure rod; 75. Limiting rod; 76. Protective head; 77. Anti-slip protrusion. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0026] Please see Figures 1 to 5 The present invention provides an FCT test fixture with protective function, comprising: a base 1, a bracket 2 fixedly connected to the upper surface of the base 1, an operating handle 3 installed at the upper end of the bracket 2, a support frame 4 installed on the upper surface of the base 1, a plurality of probes 5 installed on the upper surface of the base 1 corresponding to the position of the support frame 4, an adjustment structure 6 provided on the inner wall of the support frame 4, and an auxiliary structure 7 provided at the lower end of the operating handle 3.

[0027] In the embodiments of this utility model, please refer to Figure 2 and Figure 3The adjusting structure 6 includes a bidirectional screw 601, which is rotatably connected to the support frame 4. The two ends of the bidirectional screw 601 have threads in opposite directions. Two clamping arms 602 are threaded onto the arc surface of the bidirectional screw 601. A round rod 603 is fixedly connected to the inner wall of the support frame 4, and the arc surface of the round rod 603 is slidably connected to the clamping arms 602. A baffle 605 is fixedly connected to the inner wall of the clamping arms 602, and two positioning rods 606 are slidably connected to the inner wall of the baffle 605. The ends of the two positioning rods 606 closest to the clamping arms 602 are... A spring 607 is fixedly connected, with the end of the spring 607 away from the positioning rod 606 fixedly connected to the clamping arm 602. A connecting rod 608 is fixedly connected to the surface of the two positioning rods 606. A support box 611 is abutted against the side of the two clamping arms 602 that is close to each other. Several positioning holes 612 are opened on both sides of the support box 611. The inner wall of the positioning hole 612 is slidably connected to the positioning rod 606, which enables quick and accurate positioning and clamping of the antistatic support box 611. It can be adapted to support boxes 611 of different sizes, improving the versatility of the test fixture. To improve line-changing efficiency, the support box 611 is specifically an anti-static bakelite box. Several pinholes are provided on the inner wall of the support box 611. Black bakelite typically has anti-static properties, effectively preventing static electricity buildup during testing from damaging the precision circuit board. Simultaneously, the pinholes provide a precise path for the probe 5, ensuring testing accuracy. A scale 604 is provided on the upper surface of the support frame 4 corresponding to the position of the bidirectional screw 601. A pull ring 609 is fixedly connected to the connecting rod 608 near the spring 607. The scale 604 provides visualization... The spacing reference makes the adjustment of the clamping arm 602 more precise; the pull ring 609 makes it easy for the operator to pull the connecting rod 608 to disengage the positioning rod 606 from the positioning hole 612, making the operation labor-saving and convenient. Two slide rods 610 are fixedly connected to the inner wall of the clamping arm 602. The arc surface of the slide rod 610 is slidably connected to the positioning rod 606. The slide rod 610 provides additional guidance and support for the sliding of the positioning rod 606, ensuring the stability of the positioning rod 606 during the movement, so that it can be more accurately aligned and inserted into the positioning hole 612 of the support box 611. In the embodiments of this utility model, please refer to Figure 4 and Figure 5The auxiliary structure 7 includes a pressure plate 71, which is fixedly connected to the operating handle 3. An auxiliary groove 72 is formed on the surface of the pressure plate 71. Several auxiliary tubes 73 are movably connected to the inner wall of the auxiliary groove 72. A pressure rod 74 is threadedly connected to the inner wall of each auxiliary tube 73. A limiting rod 75 is threadedly inserted into the upper surface of each auxiliary tube 73, allowing the pressure rod 74 to be flexibly adjusted in the horizontal and vertical directions. This ensures stable pressure on circuit boards of different sizes, preventing displacement or bounce during testing and ensuring the stability and safety of the testing process. The lower end of the pressure rod 74 is fixedly connected to... The protective head 76 is made of rubber. The rubber protective head 76 is soft and avoids scratching the board surface or damaging the precision components on the board when pressing the circuit board, thus playing a good protective role. Several anti-slip protrusions 77 are fixedly connected to the arc surface of the auxiliary tube 73 and the upper end of the pressure rod 74. The anti-slip protrusions 77 are evenly distributed on the auxiliary tube 73 and the pressure rod 74. The anti-slip protrusions 77 increase the friction between the hand and the parts, making it easier and less slippery when rotating and adjusting the auxiliary tube 73 and the pressure rod 74, thus improving the convenience and experience of operation. The working principle of the FCT test fixture with protective function provided by this utility model is as follows: By setting the adjustment structure 6, the bidirectional screw 601 is first rotated. The bidirectional screw 601 drives the two clamping arms 602 to move through the thread. The two clamping arms 602 move simultaneously towards each other along the circular rod 603 within the support frame 4. Referring to the scale 604 on the support frame, the two clamping arms 602 are adjusted to a suitable distance according to the size of the specified support box 611. Then, the connecting rod 608 on the two clamping arms 602 is moved away from each other. During this process, the connecting rod 608 drives the positioning rods 606 at both ends to move into the clamping arms 602 along the baffle 605. Inside the support box 611, the spring 607 is compressed. Once the positioning rod 606 is fully inserted into the clamping arm 602, the support box 611 can be placed between the two clamping arms 602 from top to bottom, aligning the positioning hole 612 with the positioning rod 606. Then, release the connecting rod 608. Under the elastic force of the spring 607, the positioning rod 606 moves towards the support box 611, sliding into the positioning hole 612. Continue rotating the bidirectional screw 601, using the two clamping arms 602 to hold the support box 611. The user adjusts the position of the probe 5 on the base 1 according to the pinhole on the support box 611. Then, the user can place the circuit board to be tested into the support box. Inside box 611, the operating handle 3 is moved to perform subsequent testing operations. The black bakelite typically possesses anti-static properties, effectively preventing static electricity buildup during testing from damaging the precision circuit board. Simultaneously, the pinhole provides a precise path for the probe 5, ensuring testing accuracy. The scale 604 provides a visual spacing reference, allowing for more precise adjustment of the clamping arm 602. The pull ring 609 facilitates the operator's effort in pulling the connecting rod 608, disengaging the positioning rod 606 from the positioning hole 612. The sliding rod 610 provides additional guidance and support for the sliding of the positioning rod 606, ensuring the positioning rod 606 moves smoothly during its movement. The stability allows for more precise alignment and insertion into the positioning hole 612 of the support box 611. This is achieved by using a bidirectional screw 601 to drive the two clamping arms 602 to move synchronously in opposite directions, combined with the indication of the scale 604. This allows for precise adaptation to various sizes of anti-static support boxes 611, greatly improving the versatility and line-changing efficiency of the fixture. The positioning rod 606 automatically springs into the positioning hole 612 on the side of the support box 611 under the elastic force of the spring 607. This not only ensures the precise alignment of the support box 611 on the horizontal plane, preventing it from moving forward, backward, left, or right, but also provides a basis for subsequent clamping operations, making the entire clamping process efficient, reliable, and easy to operate.

[0028] By setting the auxiliary structure 7, the auxiliary tube 73 is kept stationary with one hand while the limiting rod 75 on the auxiliary tube 73 is rotated. The limiting rod 75 moves away from the pressure plate 71, releasing the limiting of the auxiliary tube 73. The other auxiliary tubes 73 are operated in the same way. Then, according to the size of the specified support box 611 and the size of the circuit board to be tested, the position of the pressure rod 74 is adjusted. First, the auxiliary tube 73 is moved to the appropriate position along the auxiliary groove 72. Then, the limiting rod 75 is rotated in the opposite direction, using the limiting rod 75 to press against the pressure plate 71, fixing the position of the auxiliary tube 73. Next, the pressure rod 74 can be rotated while holding the auxiliary tube 73. The pressure rod 74 can move up or down along the auxiliary tube 73 with the help of the thread, adjusting the extension length of the pressure rod 74. Among them, the rubber material The protective head 76 is soft and avoids scratching the board surface or damaging the precision components on the board when pressing the circuit board, providing good protection. The anti-slip protrusion 77 increases the friction between the hand and the parts, making it easier and less slippery when rotating the adjustment auxiliary tube 73 and the pressure rod 74, improving the convenience and experience of operation. It allows the operator to flexibly adjust the position of each pressure rod 74 on the horizontal plane and its extension length according to the actual size and center of gravity distribution of the circuit board, thereby achieving stable pressing of circuit boards of different sizes and layouts. This pressing method can effectively prevent the circuit board from shifting or bouncing due to the contact of the probe 5 or the vibration of the equipment during the test, ensuring the stability of the test connection and the consistency of the results.

[0029] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An FCT test fixture with protective function, characterized in that, include: A base (1) is fixedly connected to a bracket (2) on its upper surface. An operating handle (3) is installed on the upper end of the bracket (2). A support frame (4) is installed on the upper surface of the base (1). Several probes (5) are installed on the upper surface of the base (1) corresponding to the position of the support frame (4). An adjustment structure (6) is provided on the inner wall of the support frame (4). The adjustment structure (6) includes a bidirectional screw (601). The bidirectional screw (601) is rotatably connected to the support frame (4). The two ends of the bidirectional screw (601) are provided with threads in opposite directions. Two clamping arms (602) are threaded on the arc surface of the bidirectional screw (601). A round rod (603) is fixedly connected to the inner wall of the support frame (4). The round rod (603) is... 3) The arc surface is slidably connected to the clamping arm (602). A baffle (605) is fixedly connected to the inner wall of the clamping arm (602). Two positioning rods (606) are slidably connected to the inner wall of the baffle (605). A spring (607) is fixedly connected to one end of the two positioning rods (606) near the clamping arm (602). The end of the spring (607) away from the positioning rod (606) is fixedly connected to the clamping arm (602). A connecting rod (608) is fixedly connected to the surface of the two positioning rods (606). A support box (611) abuts against the side of the two clamping arms (602) that is close to each other. Several positioning holes (612) are opened on both sides of the support box (611). The inner wall of the positioning hole (612) is slidably connected to the positioning rod (606).

2. The FCT test fixture with protective function according to claim 1, characterized in that, The support box (611) is specifically an antistatic bakelite box, and the inner wall of the support box (611) has several pinholes.

3. The FCT test fixture with protective function according to claim 1, characterized in that, A scale (604) is provided on the upper surface of the support frame (4) at the position corresponding to the bidirectional screw (601), and a pull ring (609) is fixedly connected to the side of the connecting rod (608) near the spring (607).

4. The FCT test fixture with protective function according to claim 1, characterized in that, The inner wall of the clamping arm (602) is fixedly connected to two slide rods (610), and the arc surface of the slide rods (610) is slidably connected to the positioning rod (606).

5. The FCT test fixture with protective function according to claim 1, characterized in that, The lower end of the operating handle (3) is provided with an auxiliary structure (7). The auxiliary structure (7) includes a pressure plate (71). The pressure plate (71) is fixedly connected to the operating handle (3). An auxiliary groove (72) is opened on the surface of the pressure plate (71). Several auxiliary tubes (73) are movably connected to the inner wall of the auxiliary groove (72). A pressure rod (74) is threadedly connected to the inner wall of the auxiliary tube (73). A limiting rod (75) is threadedly inserted into the upper surface of the auxiliary tube (73).

6. The FCT test fixture with protective function according to claim 5, characterized in that, The lower end of the pressure rod (74) is fixedly connected to a protective head (76), which is a rubber head.

7. The FCT test fixture with protective function according to claim 5, characterized in that, The arc surface of the auxiliary tube (73) and the upper end of the pressure rod (74) are both fixedly connected with several anti-slip protrusions (77), and the several anti-slip protrusions (77) are evenly distributed on the auxiliary tube (73) and the pressure rod (74).

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