Testing and testing tool for passive filter

Abstract

The utility model discloses a passive filter testing and testing tool, which comprises a top cover plate, a tool cavity plate and a bottom bearing plate, the bottom bearing plate is arranged at the bottom of the tool cavity plate, the top cover plate covers the top of the tool cavity plate, the tool cavity plate is provided with a plurality of top block holes, and the top block holes are communicated with the top cover plate. A top block hole is formed in the bottom of the guide pin filter, a guide pin filter top block is installed in the top block hole, a plate cavity groove is formed in the bottom of the guide pin filter top block, a debugging column hole is formed in the top cavity groove wall of the plate cavity groove, an adjusting column sleeve is installed on the bottom hole edge of the debugging column hole, and a debugging column is inserted in the adjusting column sleeve. The beneficial effects are that electrical connection of the filter pins can be realized without welding through plugging of the pins and the wire springs, scratch is not liable to occur through protection of the top cover and the limiting holes, the adjusting knob is not liable to mistakenly touch and rotate during a high and low temperature vibration test, batch production detection can be realized, and product states can be consistent when products of the same batch are tested.

Description

Technical Field

[0001] The utility model relates to the field of filter testing devices, in particular to a testing and experimenting tool for passive filters. Background Art

[0002] During production, filters undergo relevant tests and inspections. These tests primarily cover high-temperature operation, low-temperature operation, and vibration. Testing primarily involves current monitoring, voltage monitoring, and insertion loss testing. Currently, there's a passive filter on the market with four pins and a single-ended knob on the bottom. Testing typically involves applying a 50Ω load to both the input and output of the filter according to standards. The frequency and loss of the filter's insertion loss are similar to a quadratic function, with the vertex of the function varying with load. However, for the user, the device itself is the load, which may be random data rather than 50Ω. Therefore, actual measurement requires connecting the device to the circuit. This test value will inevitably differ from the 50Ω test value. During the production process, user devices undergo soldering, creating electrical connections and leads, which can cause variations in internal resistance. Differences in solder joints and leads can affect individual products of the same type, thus affecting the product's electromagnetic compatibility. Therefore, during actual testing and inspection, the pins cannot be soldered. The filter surface is easily scratched after soldering and disassembly. The knob on the bottom can easily be accidentally touched during high-temperature and low-temperature vibration testing, making batch testing difficult and inconsistent. Utility Model Content

[0003] The purpose of the present invention is to provide a test and experiment tool for passive filters in order to solve the above problems.

[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0005] A test and experimental tooling for passive filters, comprising a top cover plate, a tooling cavity plate and a bottom bearing plate, wherein the bottom bearing plate is mounted on the bottom of the tooling cavity plate, the top cover plate is mounted on the top of the tooling cavity plate, a plurality of top block holes are provided on the tooling cavity plate, a pin filter top block is installed in the top block hole, a plate cavity groove is provided at the bottom of the pin filter top block, a debugging column hole is provided on the top cavity groove wall of the plate cavity groove, an adjusting column sleeve is installed on the bottom hole edge of the debugging column hole, a debugging column is inserted in the adjusting column sleeve, a printed circuit board is installed in the plate cavity groove, a sealing plate is fixedly mounted on the bottom groove edge of the plate cavity, a bottom line spring hole is provided on the printed circuit board, a bottom line spring is installed in the bottom line spring hole, the plate cavity groove A side wire spring hole is provided on the side groove wall, a side wire spring is installed in the side wire spring hole, a wire spring lead is installed at the bottom of the bottom line spring, the other end of the wire spring lead is connected to the side wire spring, a sleeve hole is provided on the side hole wall of the top block hole, a side pin insulating sleeve is installed in the sleeve hole, a side wire spring pin is inserted in the side pin insulating sleeve, one end of the side wire spring pin is plugged into the side wire spring, a number of guide boss slots are provided on the top cover plate, a filter bottom limiting wall is installed on the top of the lead pin filter top block, a filter bottom limiting groove is provided in the filter bottom limiting wall, a filter pin jack is provided at the bottom of the filter bottom limiting groove, and a ring hole pressing platform is installed on the bottom hole edge of the guide boss slot.

[0006] Furthermore, a column top plate is installed on the top of the debugging column, a filter adjustment button protrusion is provided on the column top plate, a plurality of column magnetic holes are opened on the column top plate, column magnetic blocks are installed in the column magnetic holes, and a bottom adjustment rotation slot is opened at the bottom of the debugging column.

[0007] Furthermore, a clamping ring cavity is provided between the adjusting column sleeve and the debugging column, and a limiting ring and a sealing ring are provided in the clamping ring cavity.

[0008] Furthermore, a cavity plate limiting column is provided at the bottom of the tooling cavity plate, a bearing plate limiting socket is provided on the bottom bearing plate, and the end of the cavity plate limiting column is inserted into the bearing plate limiting socket.

[0009] Furthermore, a cavity plate screw hole is provided at the bottom of the tooling cavity plate, a bearing plate screw hole is opened on the bottom bearing plate, and an adjusting bottom through hole is provided on the bottom bearing plate.

[0010] Furthermore, a sealing plate center hole is provided on the sealing plate, an inner ring gasket is installed on the top hole edge of the sealing plate center hole, and an outer ring gasket is installed on the top surface of the sealing plate.

[0011] Furthermore, the top cover plate is provided with a cover plate magnetic hole, in which a cover plate magnetic column is installed; the tooling cavity plate is provided with a cavity plate magnetic hole, in which a cavity plate magnetic column is installed.

[0012] The beneficial effects are:

[0013] 1. By plugging the pins and wire springs, the electrical connection of the filter pins can be achieved without soldering;

[0014] 2. It is not easy to be scratched by the protection of the top cover and limit holes;

[0015] 3. During high and low temperature vibration tests, the adjustment knob is not easy to be accidentally rotated;

[0016] 4. It can be tested in batches, making it convenient to make the product status consistent when testing the same batch of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an overall structural diagram of a test and experiment tool for a passive filter according to the present invention;

[0018] Figure 2 The utility model is an explosive structure of a test and experiment tool for passive filters. Figure 1 ;

[0019] Figure 3 This is a mother explosion structure of a test and experiment tool for passive filters described in the utility model. Figure 2 ;

[0020] Figure 4 This is a structural diagram of a debugging column of a test and experiment tool for a passive filter according to the present invention;

[0021] Figure 5 The utility model is a schematic diagram of the cross-sectional structure of a top block hole of a test and experiment tool for a passive filter.

[0022] The following are the descriptions of the reference numerals:

[0023] 1. Top cover plate, 11. Ring hole pressure platform, 12. Cover plate magnetic hole, 13. Cover plate magnetic column, 14. Guide boss slot; 2. Tooling cavity plate, 21. Top block hole, 22. Side pin insulation sleeve, 23. Side wire spring pin, 24. Sleeve jack, 25. Cavity plate screw hole, 26. Test cavity hole, 27. Cavity plate magnetic column, 28. Cavity plate limit column; 3. Bottom bearing plate, 31. Adjustment bottom through hole, 32. Bearing plate limit jack, 33. Bearing plate screw hole; 4. Debug column, 41. Column top plate, 42. Filter Filter adjustment knob convex part, 43, column magnetic hole, 44, bottom adjustment groove, 45, column magnetic block; 5, pin filter top block, 51, debugging column hole, 52, filter bottom limit wall, 53, top block side fixing ear, 54, side wire spring hole, 55, filter pin jack, 56, side wire spring, 57, adjustment column sleeve; 6, printed circuit board, 61, bottom line spring hole, 62, bottom line spring, 63, wire spring lead; 7, sealing plate, 71, outer ring gasket, 72, inner ring gasket; 8, limit ring; 9, sealing ring. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0025] like Figure 1-Figure 5 As shown, a test and experimental tooling for passive filters consists of a top cover plate 1, a tooling cavity plate 2 and a bottom bearing plate 3, wherein the cavity plate 2 and the bottom bearing plate 3 are metal plates, and in this embodiment, aluminum alloy is used, and the top cover plate 1 is an insulating plate;

[0026] The bottom bearing plate 3 is installed at the bottom of the tooling cavity plate 2, and the top cover plate 1 is covered on the top of the tooling cavity plate 2. The tooling cavity plate 2 is provided with a plurality of top block holes 21, and the top block hole 21 is provided with a lead pin filter top block 5. The bottom of the lead pin filter top block 5 is provided with a plate cavity groove, and a debugging column hole 51 is provided on the top cavity wall of the plate cavity groove. An adjusting column sleeve 57 is installed on the bottom hole edge of the debugging column hole 51, and a debugging column 4 is inserted into the adjusting column sleeve 57. The debugging column 4 is mainly used to adjust the bottom flat knob of the passive filter;

[0027] A printed circuit board 6 is installed in the board cavity groove. A sealing plate 7 is fixedly installed on the bottom groove edge of the board cavity and fixed to the bottom groove edge by screws. The printed circuit board 6 is provided with a plate sleeve hole for being mounted on the adjusting column sleeve 57 to facilitate installation. The printed circuit board 6 is provided with a bottom line spring hole 61, and a bottom line spring 62 is installed in the bottom line spring hole 61. A side line spring hole 54 is opened on the side groove wall of the board cavity groove. A side line spring 56 is installed in the side line spring hole 54. A wire spring lead 63 is installed at the bottom of the bottom line spring 62, and the other end of the wire spring lead 63 is connected to the side line spring 56.

[0028] A sleeve insertion hole 24 is provided on the side hole wall of the top block hole 21, and a side pin insulating sleeve 22 is installed in the sleeve insertion hole 24. A side wire spring pin 23 is inserted into the side pin insulating sleeve 22, and one end of the side wire spring pin 23 is plugged into the side wire spring 56;

[0029] The top cover plate 1 is provided with a plurality of guide boss slots 14, the number and position of the guide boss slots 14 match the top block hole 21, the inner groove wall of the guide boss slot 14 is wide at the bottom and narrow at the top, and the top of the pin filter top block 5 is installed with a filter bottom limiting wall 52, and a filter bottom limiting groove is provided in the filter bottom limiting wall 52, and a filter pin jack 55 is provided at the bottom of the filter bottom limiting groove. The bottom of the passive filter is placed in the filter bottom limiting groove, and the top is placed in the guide boss slot 14. A ring hole pressing platform 11 is installed on the bottom hole edge of the guide boss slot 14. The ring hole pressing platform 11 is used to limit the top of the passive filter and observe it through the ring hole at the same time.

[0030] like Figure 1-Figure 5 As shown, the present invention also discloses the following multiple more optimized specific structures:

[0031] A column top plate 41 is installed on the top of the debugging column 4. A filter adjustment knob protrusion 42 is provided on the column top plate 41, which is used to rotate and adjust the filter adjustment knob. A plurality of column magnetic holes 43 are opened on the column top plate 41. A column magnetic block 45 is installed in the column magnetic hole 43. It is used to attract the adjustment knob and is not easy to fall off when changing parts. A bottom adjustment rotation slot 44 is opened at the bottom of the debugging column 4, which can be a cross slot, so that the cross screwdriver can be used for debugging.

[0032] A clamping ring cavity is provided between the adjusting column sleeve 57 and the debugging column 4. A limiting ring 8 and a sealing ring 9 are plugged in the clamping ring cavity to play a sealing role. At the same time, the debugging column 4 will not rotate by itself when no external force is applied to rotate it.

[0033] The bottom of the tooling cavity plate 2 is provided with a cavity plate limiting column 28, and the bottom bearing plate 3 is provided with a bearing plate limiting socket 32. The end of the cavity plate limiting column 28 is inserted into the bearing plate limiting socket 32 ​​for easy alignment.

[0034] A cavity plate screw hole 25 is provided at the bottom of the tooling cavity plate 2, and a bearing plate screw hole 33 is opened on the bottom bearing plate 3, which is used for fixing the two. An adjustment bottom through hole 31 is provided on the bottom bearing plate 3, and the bottom end of the debugging column 4 extends into the adjustment bottom through hole 31 for easy adjustment.

[0035] A sealing plate center hole is provided on the sealing plate 7, and an inner ring gasket 72 is installed on the top hole edge of the sealing plate center hole to increase its sealing when the debugging column 4 passes through. An outer ring gasket 71 is installed on the top surface of the sealing plate 7, which is padded at the bottom of the adjusting column sleeve 57 to increase the sealing performance.

[0036] A cover plate magnetic hole 12 is provided on the top cover plate 1, and a cover plate magnetic column 13 is installed in the cover plate magnetic hole 12. A cavity plate magnetic hole is provided on the tooling cavity plate 2, and a cavity plate magnetic column 27 is installed in the cavity plate magnetic hole. The cavity plate magnetic column 27 is attracted to the cover plate magnetic column 13, and both are installed in the hole with interference fit.

[0037] like Figure 1-Figure 5 When the test and experimental tooling shown for passive filters is used and installed, the passive filter is placed between the top cover plate 1 and the tooling cavity plate 2, and the four pins of the passive filter are respectively inserted into the filter pin jack 55, and the bottom thereof is inserted into the bottom wire spring 62, and is led out through the wire spring lead 63, the side wire spring 56, and the side wire spring pin 23. The electrical signals of each pin are derived by plugging, and there is no need to weld and fix the pins. The top cover plate 1 is an insulating material with low hardness and will not cause damage to the filter. During high and low temperature tests and experiments, the debugging column 4 cannot rotate by itself due to the plugging and squeezing effect of the limit ring 8 and the sealing ring 9, and has good stability. The number of test cavities is set according to the test box, which is more flexible. The needles and wires are led out from the side, and multiple filters can be measured in parallel at the same time. The filter is debugged by linking the debugging column with a screwdriver. The debugging column is squeezed by the plug body to reduce the possibility of accidental collision and make its debugging state consistent.

[0038] Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements shall fall within the scope of the present invention to be protected.

Claims

1. A test and experiment tool for passive filters, characterized in that: The utility model comprises a top cover plate, a tooling cavity plate and a bottom bearing plate, wherein the bottom bearing plate is installed at the bottom of the tooling cavity plate, the top cover plate is covered on the top of the tooling cavity plate, the tooling cavity plate is provided with a plurality of top block holes, a pin filter top block is installed in the top block hole, a board cavity groove is provided at the bottom of the pin filter top block, a debugging column hole is provided on the top cavity groove wall of the board cavity groove, an adjusting column sleeve is installed on the bottom hole edge of the debugging column hole, a debugging column is inserted in the adjusting column sleeve, a printed board is installed in the board cavity groove, a sealing plate is fixedly installed on the bottom groove edge of the board cavity, a bottom line spring hole is provided on the printed board, a bottom line spring is installed in the bottom line spring hole, and a side groove wall of the board cavity groove is provided with a side groove wall. A wire spring hole, a side wire spring is installed in the side wire spring hole, a wire spring lead is installed at the bottom of the bottom line spring, the other end of the wire spring lead is connected to the side wire spring, a sleeve plug hole is opened on the side hole wall of the top block hole, a side pin insulating sleeve is installed in the sleeve plug hole, a side wire spring pin is inserted in the side pin insulating sleeve, one end of the side wire spring pin is plugged together with the side wire spring, a plurality of guide boss slot holes are provided on the top cover plate, a filter bottom limiting wall is installed on the top of the lead pin filter top block, a filter bottom limiting groove is provided in the filter bottom limiting wall, a filter pin jack is provided at the bottom of the filter bottom limiting groove, and a ring hole pressing platform is installed on the bottom hole edge of the guide boss slot hole.

2. A test and experiment tool for a passive filter according to claim 1, characterized in that: A column top plate is installed on the top of the debugging column, a filter adjustment button convex portion is arranged on the column top plate, a plurality of column magnetic holes are opened on the column top plate, column magnetic blocks are installed in the column magnetic holes, and a bottom adjustment rotation groove is opened at the bottom of the debugging column.

3. A test and experiment tool for a passive filter according to claim 1, characterized in that: A clamping ring cavity is arranged between the adjusting column sleeve and the debugging column, and a limiting ring and a sealing ring are arranged in the clamping ring cavity.

4. A test and experiment tool for a passive filter according to claim 1, characterized in that: A cavity plate limiting column is provided at the bottom of the tooling cavity plate, a bearing plate limiting insertion hole is provided on the bottom bearing plate, and the end of the cavity plate limiting column is inserted into the bearing plate limiting insertion hole.

5. A test and experiment tool for a passive filter according to claim 1, characterized in that: The bottom of the tooling cavity plate is provided with a cavity plate screw hole, the bottom bearing plate is provided with a bearing plate screw hole, and the bottom bearing plate is provided with an adjusting bottom through hole.

6. A test and experiment tool for a passive filter according to claim 1, characterized in that: The sealing plate is provided with a sealing plate center hole, an inner ring gasket is installed on the top hole edge of the sealing plate center hole, and an outer ring gasket is installed on the top surface of the sealing plate.

7. A test and experiment tool for a passive filter according to claim 1, characterized in that: The top cover plate is provided with a cover plate magnetic hole, in which a cover plate magnetic column is installed; the tooling cavity plate is provided with a cavity plate magnetic hole, in which a cavity plate magnetic column is installed.

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