An electronic component testing fixture

Abstract

This utility model discloses an electronic component testing fixture, relating to the field of electronic component testing technology. It includes a base plate with several positioning components. A suspension rod is fixedly connected to the rear side of the base plate, and a top plate is fixedly connected to the top of the suspension rod. A handle is connected to the top plate via an automatic winding component. A pressure plate is fixedly installed at the bottom of the handle, and a plastic sleeve is fixedly installed on the bottom surface of the pressure plate. The plastic sleeve is filled with electrorheological fluid. An electrical wire for energizing the electrorheological fluid is connected to the tail of the handle. The fixture aligns the plastic sleeve with the pin position and presses down the pressure plate, causing the plastic sleeve to imprint the solder joint at the pin. Then, an electrical switch controls the electrical wire to energize the electrorheological fluid inside the plastic sleeve, causing the fluid to harden and shape the plastic sleeve. Finally, the plastic sleeve is removed, and the indentation at the pin on the plastic sleeve is clearly observed, thus improving the accuracy of workers in identifying missing solder joints.

Description

Technical Field

[0001] This utility model relates to the field of electronic component testing technology, and more specifically, to an electronic component testing fixture. Background Technology

[0002] Testing electronic components is a crucial step in ensuring the quality and reliability of electronic equipment. Generally, after electronic components are soldered onto the circuit board, it is necessary to check for any missing solder joints between the pins of the electronic components and the circuit board.

[0003] Currently, the most common method for detecting missing solder joints is visual inspection. However, when electronic components have many pins and the pins are similar in color to the soldering material, there will be significant interference, making it difficult for staff to accurately detect missing solder joints. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides an electronic component testing fixture to solve the problem that when electronic components have many pins and the pins are similar in color to the soldering material used for soldering, there will be significant interference, making it difficult for workers to accurately detect missing solder joints.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an electronic component testing fixture, including a base plate, a plurality of positioning components on the base plate, a suspension rod fixedly connected to the rear side of the base plate, a top plate fixedly connected to the top of the suspension rod, a hand handle connected to the top plate via an automatic winding assembly, a pressure plate fixedly installed at the bottom end of the hand handle, a plastic sleeve fixedly installed on the bottom surface of the pressure plate, the plastic sleeve being filled with electrorheological fluid, an electrical wire for energizing the electrorheological fluid connected to the tail end of the hand handle, and an energizing switch for controlling whether the electrical wire energizes the electrorheological fluid in the middle of the hand handle.

[0006] Preferably, the plastic sleeve is made of rubber material.

[0007] Preferably, the positioning component includes a positioning post, a threaded groove in the middle of the positioning post, an adjusting rod vertically inserted into the threaded groove, a threaded post fixedly connected to the bottom end of the adjusting rod, the threaded post being threadedly connected in the threaded groove, a pressure ring fixedly installed in the middle of the adjusting rod, and a knob fixedly connected to the top of the adjusting rod.

[0008] Preferably, a first washer is fixedly provided on the top surface of the positioning post, and a second washer is fixedly provided on the bottom surface of the pressure ring, and both the first washer and the second washer are made of rubber material.

[0009] Preferably, a magnetic block is fixedly installed at the bottom end of the positioning column, the base plate is a magnetic plate, and the magnetic block can be magnetically attached to the base plate.

[0010] Preferably, the automatic winding assembly includes a winding frame, a winding roller rotatably connected to the middle of the winding frame, a torsion spring sleeved on the winding frame, the two ends of the torsion spring being fixedly connected to the winding frame and the winding roller respectively, and a suspension rope wound around the winding roller, one end of the suspension rope being connected to the winding roller and the other end being connected to the top of the hand handle.

[0011] Preferably, a universal suspension rod is fixedly connected to the front side of the top plate, and a magnifying glass is fixedly connected to the end of the universal suspension rod away from the top plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention aligns a plastic sleeve with the pin position and presses down the pressure plate. The plastic sleeve then imprints the soldering condition at the pin. Next, a power switch controls the wires to energize the electrorheological fluid inside the plastic sleeve, causing the fluid to harden and shape the sleeve. Finally, the plastic sleeve is removed, and the indentation at the pin on the sleeve is clearly observed, thus improving the accuracy of workers in identifying missing solder joints.

[0013] This invention uses the magnetic force between the base plate and the magnetic block to position the positioning column, and the position of the positioning component on the base plate can be changed at will to adapt to circuit boards of different shapes.

[0014] This invention utilizes the elasticity of a torsion spring to quickly wind up the suspension rope and suspend the hand handle, thus ensuring the cleanliness of the testing fixture.

[0015] This invention allows the universal suspension rod to be twisted arbitrarily to adjust the position of the magnifying glass, making it easier for workers to observe the dents on the plastic sleeve. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the relevant structures of the hand handle, pressure plate, and plastic sleeve of this utility model; Figure 3 This is a schematic diagram of the relevant structure of the positioning component of this utility model; Figure 4 This is a schematic diagram of the relevant structure of the suspension rod of this utility model.

[0017] [Figure Labels] 1. Base plate; 2. Positioning assembly; 21. Positioning post; 22. Magnetic block; 23. Threaded groove; 24. Adjusting rod; 25. Threaded post; 26. Pressure ring; 27. Knob; 28. First washer; 29. ​​Second washer; 3. Suspension rod; 4. Top plate; 5. Automatic winding assembly; 51. Winding frame; 52. Winding roller; 53. Torsion spring; 54. Lifting rope; 6. Hand handle; 7. Pressure plate; 8. Plastic sleeve; 9. Wire; 10. Power switch; 11. Universal suspension rod; 12. Magnifying glass. Detailed Implementation

[0018] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0019] As attached Figure 1 To be continued Figure 4 This utility model provides an electronic component testing fixture, including a base plate 1, on which a plurality of positioning components 2 are provided. A suspension rod 3 is fixedly connected to the rear side of the base plate 1, and a top plate 4 is fixedly connected to the top end of the suspension rod 3. A hand handle 6 is connected to the top plate 4 through an automatic winding component 5. A pressure plate 7 is fixedly installed at the bottom end of the hand handle 6, and a plastic sleeve 8 is fixedly installed on the bottom surface of the pressure plate 7. The plastic sleeve 8 is filled with electrorheological fluid. An electric wire 9 for energizing the electrorheological fluid is connected to the tail end of the hand handle 6, and an energizing switch 10 for controlling whether the electric wire 9 energizes the electrorheological fluid is provided in the middle of the hand handle 6.

[0020] The electrorheological fluid is liquid before being energized and hardens after being energized, which is existing technology. The end of the wire 9 that is away from the handle 6 can be connected to the power source.

[0021] Specifically, during testing, the electronic components on the circuit board are positioned with their pins facing upwards and clamped in place using the positioning assembly 2. Then, the operator holds the handle 6, aligns the plastic sleeve 8 with the pin position, and presses down the pressure plate 7. The plastic sleeve 8 then imprints the solder joint at the pin. Next, the power switch 10 controls the wire 9 to energize the electrorheological fluid inside the plastic sleeve 8, causing the fluid to harden and shape the sleeve. Afterward, the plastic sleeve 8 is removed, and the indentation at the pin is observed. Since the solder joint is convex after soldering, if the indentation is not observed where it should be, it indicates a missed solder joint, improving the accuracy of the operator's identification of missed solder joints.

[0022] Preferably, the plastic sleeve 8 is made of rubber material, which has good rebound function. After the control switch 10 cuts off the power to the electrorheological fluid, the concave part of the plastic sleeve 8 can quickly rebound and recover, which is convenient for the next test.

[0023] Preferably, the positioning component 2 includes a positioning post 21, a threaded groove 23 is provided in the middle of the positioning post 21, an adjusting rod 24 is vertically inserted into the threaded groove 23, a threaded post 25 is fixedly connected to the bottom end of the adjusting rod 24, the threaded post 25 is threadedly connected in the threaded groove 23, a pressure ring 26 is fixedly installed in the middle of the adjusting rod 24, and a knob 27 is fixedly connected to the top of the adjusting rod 24.

[0024] Specifically, by turning the knob 27, the threaded post 25 is driven along the threaded groove 23, which drives the pressure ring 26 to descend. The pressure ring 26 and the positioning post 21 clamp and position the edge of the circuit board.

[0025] Preferably, a first washer 28 is fixedly provided on the top surface of the positioning post 21, and a second washer 29 is fixedly provided on the bottom surface of the pressure ring 26. Both the first washer 28 and the second washer 29 are made of rubber material, which protects the circuit board.

[0026] Preferably, a magnetic block 22 is fixedly installed at the bottom end of the positioning post 21, the base plate 1 is a magnetic plate, and the magnetic block 22 can be magnetically attached to the base plate 1.

[0027] The positioning post 21 is positioned by the magnetic force between the base plate 1 and the magnetic block 22. The magnitude of the magnetic force is sufficient so that when the pressure plate 7 presses down on the circuit board, it will not cause the circuit board to shift. Furthermore, the position of the positioning component 2 on the base plate 1 can be changed at will to adapt to circuit boards of different shapes.

[0028] Preferably, the automatic winding assembly 5 includes a winding frame 51, a winding roller 52 rotatably connected to the middle of the winding frame 51, a torsion spring 53 sleeved on the winding frame 51, the two ends of the torsion spring 53 being fixedly connected to the winding frame 51 and the winding roller 52 respectively, and a hanging rope 54 wound on the winding roller 52, one end of the hanging rope 54 being connected to the winding roller 52, and the other end being connected to the top of the hand handle 6.

[0029] Specifically, when in use, the operator holds the handle 6 to perform the test and pulls the suspension rope 54, which causes the winding roller 52 to rotate. The torsion spring 53 stores a torsional elastic force. After the test is completed, this elastic force can be used to quickly wind up the suspension rope 54 and suspend the handle 6 to ensure the cleanliness of the testing fixture.

[0030] Preferably, a universal suspension rod 11 is fixedly connected to the front side of the top plate 4, and a magnifying glass 12 is fixedly connected to the end of the universal suspension rod 11 away from the top plate 4.

[0031] Among them, the universal suspension rod 11 is a metal universal flexible shaft that can be twisted at will to adjust the position of the magnifying glass 12. Since the pin itself is small, the dents caused by its welding on the plastic sleeve 8 are also small. With the setting of the magnifying glass 12, it is convenient for the staff to observe the dents on the plastic sleeve 8.

[0032] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A testing fixture for electronic components, characterized in that, The device includes a base plate (1), on which several positioning components (2) are provided. A suspension rod (3) is fixedly connected to the rear side of the base plate (1). A top plate (4) is fixedly connected to the top of the suspension rod (3). A hand handle (6) is connected to the top plate (4) via an automatic winding component (5). A pressure plate (7) is fixedly installed at the bottom of the hand handle (6). A plastic sleeve (8) is fixedly installed on the bottom surface of the pressure plate (7). The plastic sleeve (8) is filled with electrorheological fluid. A wire (9) for energizing the electrorheological fluid is connected to the tail of the hand handle (6). A power switch (10) for controlling whether the wire (9) energizes the electrorheological fluid is provided in the middle of the hand handle (6).

2. The electronic component testing fixture according to claim 1, characterized in that, The plastic sleeve (8) is made of rubber material.

3. The electronic component testing fixture according to claim 1, characterized in that, The positioning component (2) includes a positioning post (21), a threaded groove (23) is provided in the middle of the positioning post (21), an adjusting rod (24) is vertically inserted into the threaded groove (23), a threaded post (25) is fixedly connected to the bottom end of the adjusting rod (24), the threaded post (25) is threadedly connected in the threaded groove (23), a pressure ring (26) is fixedly installed in the middle of the adjusting rod (24), and a knob (27) is fixedly connected to the top of the adjusting rod (24).

4. The electronic component testing fixture according to claim 3, characterized in that, The top surface of the positioning post (21) is fixedly provided with a first washer (28), and the bottom surface of the pressure ring (26) is fixedly provided with a second washer (29), and both the first washer (28) and the second washer (29) are made of rubber material.

5. The electronic component testing fixture according to claim 3, characterized in that, A magnetic block (22) is fixedly installed at the bottom of the positioning column (21), the base plate (1) is a magnetic plate, and the magnetic block (22) can be magnetically attached to the base plate (1).

6. The electronic component testing fixture according to claim 1, characterized in that, The automatic winding assembly (5) includes a winding frame (51), a winding roller (52) is rotatably connected to the middle of the winding frame (51), a torsion spring (53) is sleeved on the winding frame (51), the two ends of the torsion spring (53) are fixedly connected to the winding frame (51) and the winding roller (52) respectively, and a hanging rope (54) is wound on the winding roller (52), one end of the hanging rope (54) is connected to the winding roller (52), and the other end is connected to the top of the hand handle (6).

7. The electronic component testing fixture according to claim 1, characterized in that, A universal suspension rod (11) is fixedly connected to the front side of the top plate (4), and a magnifying glass (12) is fixedly connected to the end of the universal suspension rod (11) away from the top plate (4).

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