Limiting tool for rapid test of power tube

Abstract

The utility model discloses a power tube rapid test limiting tool, and belongs to the technical field of test tools. Comprising a base, an installation part is installed on the top face of one side edge of the base, a limiting assembly is installed on the side face of the installation part and located above the base, a spring needle assembly is installed at the end, close to the base, of the limiting assembly, a heat dissipation bottom plate is installed on the top face of the base, and the heat dissipation bottom plate is used for containing a PCB. A positioning groove is formed in the heat dissipation bottom plate, the positioning groove is located below the limiting assembly, a power tube installed on the PCB is placed into the positioning groove, and the spring needle assembly is used for pressing and limiting a pin of the power tube. According to the utility model, the power tube can be tested without welding, the damage to the power tube caused by welding can be avoided, and the service life of the power tube is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of testing fixture technology, specifically relating to a power transistor rapid testing limit fixture. Background Technology

[0002] Currently, in the field of radio frequency communication technology, traditional power transistor testing still largely relies on soldering. The power transistor under test is soldered to the RF PCB board, and then external power is applied to test whether the power transistor is functioning correctly. The solder is then melted away with a soldering iron, and the next power transistor is tested in the same way. This traditional method requires more steps, wastes a lot of manpower, resources, and time, has low testing efficiency, and consumes significant resources.

[0003] Therefore, there is an urgent need to design a new type of testing fixture that has a reasonable structure, is easy to operate, is highly practical, requires no welding, and can save manpower, material resources and time, thereby improving work efficiency. Utility Model Content

[0004] Purpose of this utility model: To provide a limit fixture for rapid testing of power transistors, which solves the above-mentioned problems existing in the prior art.

[0005] Technical Solution: A power transistor rapid testing limiting fixture includes a base, an mounting part mounted on the top surface of one side edge of the base, a limiting component mounted on the side of the mounting part, the limiting component being located above the base, a spring pin assembly mounted on the end of the limiting component near the base, a heat dissipation base plate mounted on the top surface of the base, the heat dissipation base plate being used to place a PCB board, a positioning groove being formed on the heat dissipation base plate, the positioning groove being located below the limiting component, a power transistor mounted on the PCB board being placed into the positioning groove, and the spring pin assembly being used to press and limit the pins of the power transistor.

[0006] Preferably, the mounting part includes at least a support back plate, the support back plates are placed opposite each other, a mounting plate is mounted on the upper side of the support back plate, the mounting plate is located above the base, the mounting plate has a mounting groove in the transverse direction, the length direction of the mounting groove is the same as the length direction of the mounting plate, and the limiting component is mounted on the mounting plate through the mounting groove.

[0007] Preferably, the limiting component includes a positioning plate, which is bolted to the side of the mounting part. A mounting sleeve is longitudinally mounted on the side of the positioning plate. A quick clamp is installed inside the mounting sleeve. A transmission rod is rotatably mounted on the moving end of the quick clamp. The transmission rod is slidably inserted into the lower end of the mounting sleeve. A lead screw is mounted on the lower end of the transmission rod. At least two sets of nuts are engaged with the lead screw. The spring pin assembly is engaged with the lead screw.

[0008] Preferably, the spring pin assembly includes a connecting block, a connecting groove is formed in the center of the top surface of the connecting block, and an internal thread is formed in the inner wall of the connecting groove. The connecting block is connected to the limiting assembly through the connecting groove. A rubber plate is installed at the lower end of the connecting block. Four sets of mounting holes are formed in the center of the rubber plate. The mounting holes are arranged in a rectangular array on the rubber plate and extend through the rubber plate into the connecting block. A return spring is installed in each set of mounting holes. One end of the return spring is connected to the top of the mounting hole, and the other end of the return spring is connected to an insulating post. The central axis of the insulating post overlaps with the central axis of the mounting hole.

[0009] Preferably, the heat dissipation base plate includes a base plate body, which is detachably mounted on the base by bolts. The base plate body has a mounting block at its top corner, and each mounting block has a waist-shaped hole along the longitudinal direction. The base plate body is mounted on the base by bolts passing through the waist-shaped holes.

[0010] Preferably, the base plate body is made of copper plate.

[0011] Beneficial Effects: This utility model relates to a rapid testing and limiting fixture for power transistors. First, the PCB board to be tested is placed on a heat sink base. After adjusting the limiting component to a pressed state, the spring pin assembly is pressed onto the PCB board. The limiting component is then fixed to the mounting part with bolts. Applying external force to the limiting component loosens it, causing the spring pin assembly to move away from the base. The PCB board can then be removed, and another PCB board to be tested can be placed on the heat sink base. The power transistor on the PCB board is placed in the positioning groove. Applying external force to the limiting component and using the spring pin assembly to press the pins of the power transistor allows for testing without soldering. This eliminates the need for soldering, thus avoiding damage to the power transistor and extending its lifespan. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the mounting part of this utility model;

[0014] Figure 3 This is a schematic diagram of the limiting component of this utility model;

[0015] Figure 4 This is a schematic diagram of the spring pin assembly of this utility model;

[0016] Figure 5 This is a schematic diagram of the heat dissipation base plate of this utility model.

[0017] Figures 1 to 5The reference numerals in the attached diagram are: 1. Base; 2. Mounting part; 3. Limiting component; 4. Spring pin assembly; 5. Heat dissipation base plate; 6. Positioning groove;

[0018] 21. Support backplate; 22. Mounting plate; 23. Mounting slot;

[0019] 31. Positioning plate; 32. Mounting sleeve; 33. Quick clamp; 34. Drive rod; 35. Lead screw; 36. Nut;

[0020] 41. Connecting block; 42. Connecting groove; 43. Rubber plate; 44. Mounting hole; 45. Return spring; 46. Insulating post;

[0021] 51. Base plate body; 52. Mounting block; 53. Waist-shaped hole. Detailed Implementation

[0022] like Figures 1 to 5 As shown, this utility model provides a technical solution: a power transistor rapid testing limiting fixture, including a base 1, a mounting part 2, a limiting component 3, a spring pin assembly 4, and a heat dissipation base plate 5. The mounting part 2 is installed on one side of the top surface of the base 1, and the limiting component 3 is installed on the side of the mounting part 2. The limiting component 3 is located above the base 1, and the spring pin assembly 4 is installed at the end of the limiting component 3 near the base 1. The heat dissipation base plate 5 is installed on the top surface of the base 1. The heat dissipation base plate 5 includes a base plate body 51, which is made of copper plate and is detachably mounted on the base 1 by bolts. Figure 5 As shown, a mounting block is provided at the top corner of the base plate body 51. Each mounting block has a waist-shaped hole along the longitudinal direction. The base plate body 51 is installed on the base 1 by bolts passing through the waist-shaped holes. When the PCB board is placed on the base plate body 51, the position of the base plate body 51 in the base 1 is finely adjusted by the cooperation of the bolts and the waist-shaped holes. A positioning groove 6 is provided on the base plate body 51. The positioning groove 6 is located below the limiting component 3. The power tube installed on the PCB board is placed into the positioning groove 6. The pins of the power tube installed on the PCB board are located on the top surface of the base plate body 51. The pins of the power tube are pressed and limited by the spring pin component 4, so that the power tube can be tested without soldering. The power tube test can be completed without soldering, and the damage caused by soldering to the power tube can be avoided, thus extending the service life of the power tube.

[0023] In a further embodiment, the mounting part 2 includes at least a support back plate 21. In this embodiment, two sets of support back plates 21 are used, and the support back plates 21 are placed opposite each other. A mounting plate 22 is installed on the upper side of the support back plate 21. The mounting plate 22 is located above the base 1. The mounting plate 22 has a mounting groove 23 opened in the transverse direction. The length direction of the mounting groove 23 is the same as the length direction of the mounting plate 22. The limiting component 3 includes a positioning plate 31. The positioning plate 31 is installed on the mounting plate 22 by bolts. The positional relationship between the positioning plate 31 and the mounting plate 22 is adjusted by adjusting the position of the bolts in the mounting groove 23. The side of the positioning plate 31 is... A mounting sleeve 32 is installed longitudinally, and a quick clamp 33 is installed inside the mounting sleeve 32. A transmission rod 34 is rotatably mounted on the moving end of the quick clamp 33. The transmission rod 34 slides into the lower end of the mounting sleeve 32. By applying external force to the quick clamp 33, the transmission rod 34 can be moved within the mounting sleeve 32. A lead screw 35 is installed at the lower end of the transmission rod 34. At least two sets of nuts 36 are engaged with the lead screw 35. A spring pin assembly 4 engages with the lead screw 35. The spring pin assembly includes a connecting block 41. A connecting groove 42 is formed in the center of the top surface of the connecting block 41. An internal thread is formed on the inner wall of the connecting groove 42. The connecting block 41 passes through the connecting groove. Connecting block 42 is connected to lead screw 35. A rubber plate 43 is installed at the lower end of connecting block 41. Four sets of mounting holes 44 are provided in the center of rubber plate 43. The mounting holes 44 are arranged in a rectangular array on rubber plate 43 and extend through rubber plate 43 into connecting block 41. A return spring 45 is installed in each set of mounting holes 44. One end of the return spring 45 is connected to the top of mounting hole 44, and the other end of the return spring 45 is connected to insulating post 46. The central axis of insulating post 46 overlaps with the central axis of mounting hole 44. By rotating connecting block 41 on lead screw 35, the position between insulating post 46 and positioning groove 6 in spring needle assembly 4 is adjusted. After the insulating post 46 is positioned above both sides of the positioning groove 6, the nut 36 located at the lower end of the lead screw 35 is rotated to limit the connecting block 41 to the predetermined position of the lead screw 35 and lock the connecting block 41. By using the nut 36 located at the top of the lead screw 35 to limit the movement range of the transmission rod 34, the spring pin assembly 4 can be accurately driven to press and limit the pin of the power tube when an external force is applied to the quick clamp 33. At the same time, the rubber plate 43 is used to squeeze the PCB board, so that the PCB board is tightly attached to the base plate body 51, and the heat of the bottom surface of the power tube on the PCB board is conducted to the base plate body 51 for rapid heat dissipation.

[0024] Through the above technical solution, the present invention can achieve the following working process:

[0025] When power transistors need to be tested, the PCB board is placed on the base, with the power transistor positioned in the positioning slot. The spring pin assembly is then mounted on the lead screw. After connection, the positional relationship between the insulating post in the spring pin assembly and the positioning slot is adjusted. External force is applied to the quick clamp to press it down. The position of the positioning plate on the mounting plate is adjusted so that the insulating post in the spring pin assembly presses against the power transistor's pin. The positioning plate is then fixed in the predetermined position on the mounting plate using a screw, allowing the power transistor to be tested. After testing the current power transistor, external force is applied to the quick clamp to release it. At this point, the insulating post of the spring pin assembly disengages from the power transistor's pin, allowing for quick replacement of other power transistors. The process of applying external force to the quick clamp and using the spring pin assembly to press the power transistor's pin for testing is repeated, improving testing efficiency while reducing damage to the power transistor caused by soldering.

[0026] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A power tube rapid test limiting tool, characterized in that, The application relates to a power tube fixing device, which comprises a base (1), an installation part (2) is arranged on one side edge of the top surface of the base (1), a limiting assembly (3) is arranged on the side surface of the installation part (2), the limiting assembly (3) is arranged above the base (1), a spring needle assembly (4) is arranged on the end of the limiting assembly (3) close to the base (1), a heat dissipation bottom plate (5) is arranged on the top surface of the base (1) and used for placing a PCB, a positioning groove (6) is formed in the heat dissipation bottom plate (5) and below the limiting assembly (3), a power tube installed on the PCB is arranged in the positioning groove (6), and the spring needle assembly (4) is used for pressing and limiting the pin of the power tube.

2. The power tube quick test limiting tool according to claim 1, wherein, The installation part (2) comprises at least a support back plate (21), the support back plates (21) are oppositely arranged, an installation plate (22) is arranged on the upper end side surface of the support back plate (21), the installation plate (22) is arranged above the base (1), an installation groove (23) is formed in the installation plate (22) in the transverse direction, the length direction of the installation groove (23) is the same as the length direction of the installation plate (22), and the limiting assembly (3) is arranged on the installation plate (22) through the installation groove (23).

3. The power tube quick test limiting tool according to claim 1, wherein, The limiting assembly (3) comprises a positioning plate (31), the positioning plate (31) is arranged on the side surface of the installation part (2) through bolts, an installation sleeve (32) is arranged on the side surface of the positioning plate (31) in the longitudinal direction, a quick clamp (33) is arranged in the installation sleeve (32), a transmission rod (34) is rotatably arranged on the moving end of the quick clamp (33), the transmission rod (34) is slidably inserted into the lower end of the installation sleeve (32), a screw rod (35) is arranged on the lower end of the transmission rod (34), at least two groups of nuts (36) are engagedly connected to the screw rod (35), and the spring needle assembly (4) is engagedly connected to the screw rod (35).

4. The power tube quick test limiting tool according to claim 1, wherein, The spring needle assembly comprises a connecting block (41), a connecting groove (42) is formed in the top surface of the connecting block (41), internal threads are formed in the inner wall of the connecting groove (42), the connecting block (41) is connected to the limiting assembly (3) through the connecting groove (42), a rubber plate (43) is arranged on the lower end of the connecting block (41), four groups of installation holes (44) are formed in the center of the rubber plate (43), the installation holes (44) are arranged in a rectangular array on the rubber plate (43), the installation holes (44) extend into the connecting block (41) after penetrating through the rubber plate (43), a reset spring (45) is arranged in each group of the installation holes (44), one end of the reset spring (45) is connected to the top of the installation hole (44), the other end of the reset spring (45) is connected to an insulating column (46), and the central axis of the insulating column (46) is overlapped with the central axis of the installation hole (44).

5. The power tube quick test limiting tool according to claim 1, wherein, The heat dissipation bottom plate (5) comprises a bottom plate body (51) which is detachably installed on the base (1) through bolts, and mounting blocks are arranged at the top corners of the bottom plate body (51), a waist-shaped hole is arranged on each mounting block in the longitudinal direction, and the bottom plate body (51) is installed on the base (1) through bolts penetrating the waist-shaped holes.

6. The power tube quick test limiting tool according to claim 5, characterized in that, The bottom plate body (51) is made of a copper plate.

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