Filter performance test fixture

Abstract

This utility model relates to the field of performance testing technology, and more particularly to a filter performance testing fixture, including a tester; it also includes a mounting base and a connecting assembly; two mounting bases are fixedly connected to the upper end of the tester, and a first rotating block and a second rotating block are rotatably arranged on the outer side of the mounting bases, with the second rotating block located outside the first rotating block. A pressing block is rotatably arranged on the inner wall of the second rotating block, and a connecting assembly is provided at the right end of the tester. This utility model uses the rotation of the first rotating block to make the fixing plate horizontal, then slides the fixing bolts according to the position of the filter body to allow the fixing plate to fit against the upper end of the filter body, and fixes the fixing plate by rotating the nut. Then, by rotating the second rotating block, the internal pressing block presses against the first rotating block, ensuring that the fixing plate can stably fix the filter body. This solves the problem that test results may be inaccurate due to human behavior when testing with a handheld probe.

Description

Technical Field

[0001] This utility model belongs to the field of performance testing technology, specifically relating to a filter performance testing fixture. Background Technology

[0002] Filters are key components widely used in electronic devices, especially in signal processing, communication, audio, and video fields. The main function of a filter is to remove unwanted frequency components from the input signal, allowing only signals of specific frequencies to pass through to meet the specific requirements of the system. Modern electronic devices place increasingly higher demands on filter performance, particularly in high-speed signal processing and high-precision signal transmission, which impose even greater requirements on filter performance.

[0003] In the existing technology, filter performance testing devices generally perform electrical tests between the input and output of the filter by hand-held test leads. The test leads are generally equipped with voltage, frequency or current measurement functions. The changes in the measured signal can be detected by manually adjusting the device, thereby evaluating the performance of the filter.

[0004] During testing, the position of the test leads needs to be manually adjusted to ensure correct connection between the device and the filter's input / output ports. However, various factors can interfere with the testing process, such as unstable contact of the test leads or varying pressure applied during measurement, directly leading to inaccurate measurement data and affecting the precision of the test results. Utility Model Content

[0005] To overcome the problem that existing filter performance testing devices rely on handheld probes for testing, which can lead to inaccurate data due to human behavior, a filter performance testing fixture is proposed.

[0006] The technical solution of this utility model is as follows: a filter performance testing fixture, including a tester; it also includes a mounting base and a connecting component; two mounting bases are fixedly connected to the upper end of the tester, a first rotating block and a second rotating block are rotatably arranged on the outer side of the mounting base, the second rotating block is located outside the first rotating block, a pressing block is rotatably arranged on the inner wall of the second rotating block, the lower end face of the pressing block is in contact with the upper end face of the first rotating block, a first groove is opened through the upper end of the first rotating block, a fixing bolt is slidably arranged on the inner wall of the first groove, a fixing plate is slidably arranged on the outer wall of the fixing bolt, a nut is threaded on the outer wall of the fixing plate, and a connecting component is provided at the right end of the tester.

[0007] Preferably, the nut is located at the lower end of the fixed plate, the outer wall of the second rotating block is fitted with a protective sleeve, and two limiting plates are fixedly connected to the upper end of the fixed plate, with the inner wall surface of the limiting plate fitting against the outer wall surface of the first rotating block.

[0008] Preferably, a limit frame is fixed to the upper end of the tester, and a second groove is opened at the upper end of the tester. Multiple telescopic rods are fixed to the inner wall of the second groove, and a support plate is fixed to the upper end of the telescopic rods.

[0009] Preferably, a spring is fixed to the bottom of the inner wall of the second tank, the telescopic rod is located inside the spring, and the filter body is provided on the upper end of the support plate.

[0010] Preferably, the tester has a workbench at the bottom, a controller is fixed to the top of the workbench, and a display screen and control panel are set at the front of the controller.

[0011] Preferably, the connecting assembly includes a first connector, two first connectors are fixedly connected to the right end of the tester, a connecting wire is provided on the inner wall of the first connector, a limit ring is fixedly connected to the outer wall of the connecting wire, and a threaded sleeve is slidably provided on the outer wall of the connecting wire.

[0012] Preferably, the threaded sleeve is threaded onto the outer wall of the first connector, and the other end of the connecting line is fixedly connected to the second connector. A slot is provided on the left end of the worktable, and multiple buckles are fixedly connected to the left end of the worktable, with the buckles being compatible with the second connector.

[0013] The beneficial effects of this utility model are as follows: By rotating the first rotating block, the fixing plate is brought to a horizontal position. Then, according to the position of the filter body, the fixing bolt is slid to make the fixing plate fit against the upper end of the filter body. The fixing plate is then fixed by rotating the nut. After that, by rotating the second rotating block, the internal pressing block is pressed against the first rotating block, ensuring that the fixing plate can stably fix the filter body. This solves the problem that the test results may be inaccurate due to the influence of human behavior when testing with a handheld probe. Attached Figure Description

[0014] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0015] Figure 2 The diagram shown is a three-dimensional structural schematic of the second rotating block of this utility model;

[0016] Figure 3 The diagram shown is a cross-sectional perspective view of the tester of this utility model.

[0017] Figure 4 The diagram shown is a three-dimensional structural schematic of the first connector of this utility model;

[0018] Figure 5 The diagram shown is a three-dimensional structural schematic of the second connector of this utility model.

[0019] The labels in the attached diagram are as follows: 1. Tester; 101. Mounting base; 102. First rotating block; 103. Second rotating block; 104. Extrusion block; 105. First groove; 106. Fixing bolt; 107. Fixing plate; 108. Nut; 2. Protective sleeve; 201. First connector; 202. Connecting wire; 203. Limiting ring; 204. Threaded sleeve; 205. Second connector; 206. Slot; 207. Buckle; 3. Limiting plate; 4. Limiting frame; 5. Second groove; 6. Telescopic rod; 7. Support plate; 8. Spring; 9. Filter body; 10. Workbench; 11. Controller; 12. Display screen; 13. Control panel. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figures 1-5 This utility model provides an embodiment of a filter performance testing fixture, including a tester 1; it also includes a mounting base 101 and a connecting assembly; two mounting bases 101 are fixedly connected to the upper end of the tester 1, a first rotating block 102 and a second rotating block 103 are rotatably disposed on the outer side of the mounting base 101, the second rotating block 103 is located outside the first rotating block 102, a pressing block 104 is rotatably disposed on the inner wall of the second rotating block 103, the lower end face of the pressing block 104 is in contact with the upper end face of the first rotating block 102, a first groove 105 is formed through the upper end of the first rotating block 102, a fixing bolt 106 is slidably disposed on the inner wall of the first groove 105, and a fixing plate 1 is slidably disposed on the outer wall of the fixing bolt 106. 07. A nut 108 is threaded onto the outer wall of the fixing plate 107. A connecting component is provided on the right end of the tester 1. By rotating the first rotating block 102, the fixing plate 107 is brought to a horizontal position. Then, according to the position of the filter body 9, the fixing bolt 106 is slid to allow the fixing plate 107 to fit against the upper end of the filter body 9. The fixing plate 107 is then fixed by rotating the nut 108. After that, by rotating the second rotating block 103, the internal pressing block 104 presses against the first rotating block 102, ensuring that the fixing plate 107 can stably fix the filter body 9. This solves the problem that the test results may be inaccurate due to human behavior when testing by hand holding the test probe.

[0022] Please see Figures 1-3In this embodiment, the nut 108 is located at the lower end of the fixing plate 107, the outer wall of the second rotating block 103 is fitted with a protective sleeve 2, two limiting plates 3 are fixedly connected to the upper end of the fixing plate 107, the inner wall surface of the limiting plate 3 is in contact with the outer wall surface of the first rotating block 102, the upper end of the tester 1 is fixedly connected with a limiting frame 4, the upper end of the tester 1 is provided with a second groove 5, multiple telescopic rods 6 are fixedly connected to the inner wall of the second groove 5, the upper end of the telescopic rods 6 is fixedly connected with a support plate 7, the bottom end of the inner wall of the second groove 5 is fixedly connected with a spring 8, and the telescopic rods 6 are located at the spring 8. Inside, the filter body 9 is set on the upper end of the support plate 7, and the workbench 10 is set on the lower end of the tester 1. The controller 11 is fixed to the upper end of the workbench 10. The front end of the controller 11 is equipped with a display screen 12 and a control panel 13. After the test is completed, the filter body 9 is released by rotating the second rotating block 103. At this time, the spring 8 returns to its original state and drives the support plate 7 to move upward, so that the filter body 9 can be automatically popped out, making it easy to remove the filter body 9 and avoiding damage to the filter body 9 by using tools.

[0023] Please see Figure 4 and Figure 5 In this embodiment, the connecting assembly includes a first connector 201. Two first connectors 201 are fixedly connected to the right end of the tester 1. A connecting wire 202 is provided on the inner wall of the first connector 201. A limit ring 203 is fixedly connected to the outer wall of the connecting wire 202. A threaded sleeve 204 is slidably provided on the outer wall of the connecting wire 202. The threaded sleeve 204 is threadedly installed on the outer wall of the first connector 201. A second connector 205 is fixedly connected to the other end of the connecting wire 202. A slot 206 is provided on the left end of the worktable 10. Multiple clips 207 are fixed to the left end. The clips 207 are adapted to the second connector 205. The connecting wire 202 is inserted into the first connector 201. The threaded sleeve 204 is screwed into the first connector 201 by rotating. Under the limit of the limiting ring 203, the connecting wire 202 can be tightly connected to the first connector 201 to avoid loosening. Then, the second connector 205 is inserted into the slot 206. Under the limit of the clips 207, the connection can be prevented from being unstable.

[0024] In use, first place the filter body 9 inside the limiting frame 4, rotate the first rotating block 102 to make the fixing plate 107 horizontal, then slide the fixing bolt 106 according to the position of the filter body 9 so that the fixing plate 107 can fit against the upper end of the filter body 9, and fix the fixing plate 107 by rotating the nut 108. Then rotate the second rotating block 103 to make the internal pressing block 104 press the first rotating block 102 to ensure that the fixing plate 107 can stably fix the filter body 9.

[0025] Under the pressure of the fixed plate 107, the filter body 9 moves downward and drives the support plate 7 to press the spring 8 downward, so that the filter body 9 can fit against the upper end of the tester 1. Then, the connecting wire 202 is inserted into the first connector 201. By rotating the threaded sleeve 204, it is threadedly connected to the first connector 201. Under the limit of the limiting ring 203, the connecting wire 202 can be firmly connected to the first connector 201 to avoid loosening. Then, the second connector 205 is inserted into the slot 206. Under the limit of the buckle 207, it can prevent unstable connection. After the test, the filter body 9 is released by rotating the second rotating block 103. At this time, the spring 8 returns to its original state and drives the support plate 7 to move upward, so that the filter body 9 can be automatically popped out for easy removal.

[0026] Through the above steps, the fixing plate 107 is brought to a horizontal position by rotating the first rotating block 102. Then, the fixing bolt 106 is slid according to the position of the filter body 9 so that the fixing plate 107 can fit against the upper end of the filter body 9. The fixing plate 107 is fixed by rotating the nut 108. Then, the second rotating block 103 is rotated so that the internal pressing block 104 presses against the first rotating block 102, ensuring that the fixing plate 107 can stably fix the filter body 9. This solves the problem that the test results may be inaccurate due to the influence of human behavior when testing by hand holding the test probe.

Claims

1. Filter performance test fixture, comprising a tester (1); characterized in that: It also includes a mounting base (101) and a connecting component; the upper end of the tester (1) is fixed with two mounting bases (101), and a first rotating block (102) and a second rotating block (103) are rotatably arranged on the outer side of the mounting base (101). The second rotating block (103) is located outside the first rotating block (102). A pressing block (104) is rotatably arranged on the inner wall of the second rotating block (103). The lower end face of the pressing block (104) is in contact with the upper end face of the first rotating block (102). A first groove (105) is opened through the upper end of the first rotating block (102). A fixing bolt (106) is slidably arranged on the inner wall of the first groove (105). A fixing plate (107) is slidably arranged on the outer wall of the fixing bolt (106). A nut (108) is threaded on the outer wall of the fixing plate (107). A connecting component is provided on the right end of the tester (1).

2. The filter performance test fixture of claim 1, wherein: The nut (108) is located at the lower end of the fixed plate (107). The outer wall of the second rotating block (103) is fitted with a protective sleeve (2). Two limiting plates (3) are fixed to the upper end of the fixed plate (107). The inner wall surface of the limiting plate (3) is in contact with the outer wall surface of the first rotating block (102).

3. The filter performance test fixture of claim 1, wherein: The upper end of the tester (1) is fixed with a limit frame (4), and the upper end of the tester (1) is provided with a second groove (5). Multiple telescopic rods (6) are fixed to the inner wall of the second groove (5), and a support plate (7) is fixed to the upper end of the telescopic rods (6).

4. The filter performance test fixture of claim 3, wherein: The bottom of the inner wall of the second tank (5) is fixed with a spring (8), the telescopic rod (6) is located inside the spring (8), and the filter body (9) is provided on the upper end of the support plate (7).

5. The filter performance test fixture of claim 1, wherein: The tester (1) has a workbench (10) at its lower end, and a controller (11) is fixedly connected to the upper end of the workbench (10). The controller (11) has a display screen (12) and a control panel (13) at its front end.

6. The filter performance test fixture of claim 1, wherein: The connection assembly includes a first connector (201). Two first connectors (201) are fixed to the right end of the tester (1). A connecting line (202) is provided on the inner wall of the first connector (201). A limit ring (203) is fixed to the outer wall of the connecting line (202). A threaded sleeve (204) is slidably provided on the outer wall of the connecting line (202).

7. The filter performance test fixture of claim 6, wherein: The threaded sleeve (204) is threaded onto the outer wall of the first connector (201), and the other end of the connecting line (202) is fixedly connected to the second connector (205). A slot (206) is provided on the left end of the workbench (10), and multiple buckles (207) are fixedly connected to the left end of the workbench (10). The buckles (207) are compatible with the second connector (205).

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