Calibration Equipment and Calibration Part Connector for a Shielding Effectiveness Testing System

Abstract

The present invention relates to the technical field of low-frequency calibration, and in particular provides a calibration device and a calibration component connector for a shielding effectiveness test system. The calibration device for the shielding effectiveness test system includes an isolation circuit board, two shielding cylinders, two support rings, two closed connection cylinders, a copper core, and two calibration component connectors. The present invention can form a discontinuous air coaxial structure and use air as a medium to achieve low-loss transmission of signals in the cable. A patch resistor is provided to meet diverse shielding effectiveness calibration requirements. In addition, the installation process is simple and convenient, only requiring rotation of the calibration connection housing and the test rotation housing, without complicated procedures. At the same time, it can provide multi-point and enveloping fastening connections to form a multiple protection mechanism to ensure the stability of the copper core after connection, and can effectively absorb impact force and reduce the influence of external impact on the connection part.

Description

Technical Field

[0001] The present invention relates to the technical field of low-frequency calibration, and in particular provides a calibration device and a calibration component connector for a shielding effectiveness test system. Background Art

[0002] In the design and application of modern electronic devices, electromagnetic compatibility (EMC) has become a crucial indicator. Especially in an environment of high-frequency signal transmission, the shielding characteristics of cables and connectors directly affect the performance and stability of the devices. Current research mainly focuses on theoretical models of shielding effectiveness testing, development of testing devices, and shielding characteristic tests. Regarding the comprehensive calibration of the test system, which is a key factor affecting test accuracy, relevant research is relatively scarce. As a result, there is a lack of effective calibration equipment, making it difficult to ensure the accuracy and reliability of the test system. At the same time, the existing calibration component connectors for connecting calibration components to the test system have a complex installation process, are prone to over-tightening or loosening, resulting in poor fit, affecting the contact effect, and have poor shock resistance, making it easy for the connector head to become loose during the test process, thereby affecting the contact quality. Summary of the Invention

[0003] Based on this, it is necessary to provide a calibration device and a calibration component connector for a shielding effectiveness test system to solve at least one technical problem in the background art.

[0004] A calibration component connector includes a calibration connection assembly and a test connection assembly, a calibration connection housing, a copper core stabilizing element, and a plurality of stability-enhancing holding elements. A calibration thread groove is recessed on the outer side of the outer wall of the calibration connection housing. The interior of the calibration connection housing is hollow to form a hollow cavity. A stable installation hole is recessed on the outer side of the hollow cavity. A sliding through ring protrudes in the middle of the hollow cavity. A sliding installation ring protrudes inside the sliding through ring. An elastic coating ring protrudes inside the sliding installation ring, and the diameter of the elastic coating ring gradually decreases from the outside to the inside. A conical groove is recessed in the middle of the inner wall of the hollow cavity. An arc-shaped sliding surface is recessed on the inner wall of the conical groove. A plurality of communication chutes are recessed at intervals along the circumferential direction on the outer side of the conical groove. The outer ends of the plurality of communication chutes are all connected to the stable installation holes. An arc-shaped fitting chute is recessed on the outer side of each communication chute. An installation adjustment chute is recessed in the middle of the inner wall of each communication chute. A plurality of radial chutes are recessed at intervals along the circumferential direction on the inner side of the inner wall of the hollow cavity. A linkage chute is recessed in the middle of the outer side of each radial chute, and a plurality of linkage chutes are all connected to the conical groove. The inner side of the copper core stabilizing element is installed on the outer side of the sliding through ring. The plurality of stability-enhancing holding elements are installed at intervals along the circumferential direction in the hollow cavity. The inner side of the test connection assembly is connected to the inner side of the calibration connection housing.

[0005] As a further improvement of the present invention, the copper core stabilizing element includes a stabilizing mounting ring and a plurality of stabilizing pressing claws. The inner side of the stabilizing mounting ring is mounted on the outer side of the sliding through ring, and a passing gap is formed between the outer wall of the stabilizing mounting ring and the inner wall of the stabilizing mounting hole. The inner ends of the plurality of stabilizing pressing claws are respectively mounted on the outer side of the stabilizing mounting ring at intervals in the circumferential direction.

[0006] As a further improvement of the present invention, each stabilizing pressing claw includes an arc-shaped elastic part and a trapezoidal pressing part. The inner end of the arc-shaped elastic part is mounted on the outer side of the stabilizing mounting ring, and the outer end of the arc-shaped elastic part faces the center. The inner end of the trapezoidal pressing part is mounted on the outer side of the arc-shaped elastic part. An arc-shaped fitting surface is recessed on the inner wall of the trapezoidal pressing part, and an arc-shaped pushing surface is recessed on the outer wall of the trapezoidal pressing part.

[0007] As a further improvement of the present invention, each stability enhancing holding element includes a pressing trigger bar, a human-shaped compression spring piece, a covering holding slider, and a covering linkage slider. The middle of the pressing trigger bar is slidably mounted in the communication chute, and the inner end of the pressing trigger bar is arranged in the conical groove. The bottom of the human-shaped compression spring piece is mounted on the outer wall of the sliding mounting ring. The covering holding slider is slidably mounted in the radial chute, and an inclined arc surface is recessed on the outer side of the inner wall of the covering holding slider. The inclined arc surface abuts against the outer wall of the elastic covering ring. A covering spring is arranged between the outer side of the outer wall of the covering holding slider and the inner wall of the radial chute. An inclined pushing surface is recessed on the outer side of the outer wall of the covering holding slider. The middle of the covering linkage slider is slidably mounted in the linkage chute, and a triggering inclined surface is recessed on the inner side of the inner wall of the covering linkage slider. The triggering inclined surface abuts against the inclined pushing surface, and the outer end of the covering linkage slider is arranged in the conical groove.

[0008] As a further improvement of the present invention, the covering linkage slider includes a central sliding part, an arc-shaped sliding fitting part, and an inner end pushing part. The bottom of the central sliding part is slidably mounted in the middle of the communication chute, and the top of the central sliding part is slidably mounted in the middle of the installation adjustment chute. A linkage spring is arranged between the outer side of the central sliding part and the outer side of the installation adjustment chute. The inner side of the inner end pushing part is mounted on the outer bottom of the central sliding part. The inner end pushing part is made of an elastic material, and the thickness of the inner end pushing part gradually decreases from the outside to the inside. An inclined deformation surface is recessed on the outer side of the top surface of the inner end pushing part. The bottom surface of the inner end pushing part abuts against the arc-shaped pushing surface. The top surface of the inner end pushing part slidably fits on the top surface of the arc-shaped fitting chute. The outer side of the inner end pushing part is mounted on the inner bottom of the central sliding part. An arc-shaped sliding surface is recessed on the top surface of the inner end pushing part.

[0009] As a further improvement of the present invention, the humanoid compression spring piece includes a long arc portion, a short arc portion, a sliding arc portion and an inclined pressing portion. The bottom of the long arc portion is installed on the inner side of the outer wall of the sliding mounting ring, and the middle of the outer wall of the long arc portion abuts against the outer end of the covering linkage slide bar. The bottom of the short arc portion is installed on the outer side of the outer wall of the sliding mounting ring, the top of the short arc portion is installed in the middle of the inner wall of the long arc portion, and the inner side of the inner end pressing portion abuts against the middle of the outer wall of the short arc portion. The inner side of the bottom of the sliding arc portion is installed on the top of the long arc portion, and the top of the sliding arc portion slidably fits against the inner wall of the arc sliding surface. The top of the inclined pressing portion is installed on the outer side of the bottom of the sliding arc portion, and the bottom of the inclined pressing portion abuts against the arc sliding surface.

[0010] As a further improvement of the present invention, the test connection assembly includes a test connection inner shell, a test rotating outer shell and a test stabilizing element. The inner side of the test connection inner shell is installed on the inner side of the calibration connection outer shell. A rotating mounting ring is convexly provided on the inner side of the outer wall of the test connection inner shell. A rotating cavity is concavely provided inside the test rotating outer shell, and the rotating cavity is rotatably installed in the rotating mounting ring. A threaded connection cylinder is convexly provided in the middle of the outer side of the test rotating outer shell. The test stabilizing element is installed in the test connection inner shell.

[0011] As a further improvement of the present invention, an annular sliding groove is concavely provided on the outer side of the test connection inner shell, an annular mounting groove is concavely provided on the outer wall of the rotating mounting ring, a plurality of first communication holes are concavely provided at intervals along the circumferential direction on the inner side of the annular sliding groove, and the plurality of first communication holes are all communicated with the annular mounting groove. A conical positioning ring is convexly provided on the outer side of the inner wall of the test connection inner shell.

[0012] As a further improvement of the present invention, the test stabilizing element includes a stabilizing push ring and a stabilizing airbag. The inner side of the stabilizing push ring is slidably installed in the annular sliding groove, and a plurality of compression springs are provided at intervals along the circumferential direction between the inner side of the stabilizing push ring and the inner side of the annular sliding groove. A sealing ring is provided on the inner side of the inner wall of the stabilizing push ring, and the sealing ring is slidably arranged on the inner wall of the annular sliding groove. The stabilizing airbag is installed in the annular mounting groove, and a plurality of second communication holes are concavely provided at intervals along the circumferential direction on the outer side of the stabilizing airbag, and the plurality of second communication holes are respectively communicated with the plurality of first communication holes.

[0013] A calibration device for a shielding effectiveness test system, comprising an isolation circuit board, two shielding cylinders, two support rings, two closed connection cylinders, a copper core and two calibration component connectors. Copper-clad laminates are provided on both sides of the isolation circuit board. The inner sides of the two shielding cylinders are respectively connected to the outer sides of the two copper-clad laminates. The cross-section of the isolation circuit board is circular and its outer diameter is the same as that of the two shielding cylinders. A chip resistor is provided on the side wall of the isolation circuit board. A copper core preset hole is recessed in the middle of the side wall of the isolation circuit board. The outer walls of the two support rings are respectively installed in the middle of the inner walls of the two shielding cylinders. The inner sides of the two closed connection cylinders are respectively installed on the outer sides of the two shielding cylinders. A connection thread groove is recessed at the outer end of the inner wall of each closed connection cylinder. The middle of the copper core is installed in the copper core preset hole, and both ends of the outer wall of the copper core are respectively connected to the inner walls of the two support rings. Copper core plugs are respectively protruded at both ends of the copper core, and the two copper core plugs respectively protrude outside the two closed connection cylinders. The two calibration component connectors are respectively threadedly connected to the connection thread grooves of the two closed connection cylinders through calibration thread grooves.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The present invention can form a discontinuous air coaxial structure and use air as the medium to achieve low-loss transmission of signals in the cable. A chip resistor is provided on the side wall of the isolation circuit board, so that by using resistors with different resistance values, the impedance characteristics of the circuit can be changed, thereby obtaining different transfer impedance values and shielding attenuation values to meet diverse shielding effectiveness calibration requirements.

[0016] 2. The installation process of the present invention is simple and convenient. It only needs to rotate the calibration connection housing and the test rotation housing, without complicated processes. And by using the test connection component, the stable airbag can be inflated during the connection process to adapt to different connection states, and provide additional support and stability, ensuring that there will be no over-tightening or loosening during the connection process. At the same time, it can provide a multi-point and wrap-around fastening connection to form a multiple protection mechanism to ensure the stability of the copper core after connection, and can effectively absorb impact force, reduce the influence of external impact on the connection part, improve the anti-impact ability of the system, and ensure stable operation in various environments. Description of the Drawings

[0017] Figure 1 It is a vertical sectional view of the calibration device for the shielding effectiveness test system.

[0018] Figure 2 It is a horizontal sectional view of the calibration device for the shielding effectiveness test system.

[0019] Figure 3 It is a three-dimensional schematic diagram of the calibration component connector.

[0020] Figure 4 It is an internal schematic diagram of the calibration component connector.

[0021] Figure 5 Internal schematic diagram of the calibration connection component in an embodiment of the present invention.

[0022] Figure 6 It is Figure 5 The enlarged view of part A in

[0023] Figure 7 It is Figure 5 The enlarged view of part B in

[0024] Figure 8 Internal schematic diagram of the test connection component in an embodiment of the present invention.

[0025] Figure 9 It is Figure 8 The enlarged view of part C in

[0026] In the figure:

[0027] 20. Calibration connection component; 21. Calibration connection housing; 22. Copper core stabilizing element; 23. Stability enhancing abutting element; 210. Calibration thread groove; 211. Hollow cavity; 212. Stable mounting hole; 213. Sliding through ring; 214. Sliding mounting ring; 215. Elastic coating ring; 216. Tapered groove; 217. Arc-shaped sliding surface; 218. Connecting chute; 219. Radial chute; 241. Arc-shaped fitting chute; 242. Mounting adjustment chute; 240. Linkage chute; 221. Stable mounting ring; 222. Stable pressing claw; 223. Passing gap; 224. Arc-shaped elastic part; 225. Trapezoidal pressing part; 226. Arc-shaped fitting surface; 227. Arc-shaped pushing surface; 231. Pressing trigger bar; 232. Human-shaped compression spring piece; 233. Coating abutting slider; 234. Coating linkage slide bar; 235. Inclined arc-shaped surface; 236. Inclined pushing surface; 237. Coating spring; 238. Trigger inclined surface; 261. Central sliding part; 262. Arc-shaped sliding fitting part; 263. Inner end pushing part; 264. Linkage spring; 265. Inclined deformation surface; 266. Arc-shaped sliding surface; 251. Long arc part; 252. Short arc part; 253. Sliding arc part; 254. Inclined pressing part; 30. Test connection component; 31. Test connection inner shell; 32. Test rotating housing; 33. Test stabilizing element; 311. Rotating mounting ring; 321. Rotating cavity; 322. Threaded connection cylinder; 313. Annular chute; 314. Annular mounting groove; 315. First communication hole; 316. Tapered positioning ring; 331. Stable pushing ring; 332. Stable airbag; 333. Compression spring; 334. Sealing ring; 335. Second communication hole; 10. Isolation circuit board; 11. Shielding cylinder; 12. Support ring; 13. Sealed connection cylinder; 14. Copper core; 15. Chip resistor; 16. Copper core preset hole; 17. Copper core plug; 18. Connecting thread groove. Detailed implementation manners

[0028] For ease of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present invention can be understood more thoroughly and comprehensively.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0031] Please refer to Figures 3 to 9, a calibration component connector, comprising a calibration connection component 20 and a test connection component 30, a calibration connection housing 21, a copper core stabilizing element 22 and a plurality of stability-enhancing abutting elements 23. An outer side of an outer wall of the calibration connection housing 21 is concavely provided with a calibration thread groove 210. The interior of the calibration connection housing 21 is hollow to form a hollow cavity 211. A stabilizing mounting hole 212 is concavely provided on an outer side of the hollow cavity 211. A sliding through ring 213 protrudes in the middle of the hollow cavity 211. A sliding mounting ring 214 protrudes inside the sliding through ring 213. An elastic coating ring 215 protrudes inside the sliding mounting ring 214, and a diameter of the elastic coating ring 215 gradually decreases from outside to inside. A conical groove 216 is concavely provided in a middle of an inner wall of the hollow cavity 211. An arc sliding surface 217 is concavely provided on an inner wall of the conical groove 216. A plurality of communication chutes 218 are concavely provided at intervals along a circumferential direction outside the conical groove 216. Outer ends of the plurality of communication chutes 218 are all communicated with the stabilizing mounting hole 212. An arc fitting chute 241 is concavely provided outside each communication chute 218. An installation adjustment chute 242 is concavely provided in a middle of an inner wall of each communication chute 218. A plurality of radial chutes 219 are concavely provided at intervals along a circumferential direction on an inner side of the inner wall of the hollow cavity 211. A linkage chute 240 is concavely provided in a middle of an outer side of each radial chute 219, and the plurality of linkage chutes 240 are all communicated with the conical groove 216. The inner side of the copper core stabilizing element 22 is mounted on an outer side of the sliding through ring 213. The plurality of stability-enhancing abutting elements 23 are mounted in the hollow cavity 211 at intervals along the circumferential direction. The inner side of the test connection component 30 is connected to the inner side of the calibration connection housing 21.

[0032] The copper core stabilizing element 22 includes a stabilizing mounting ring 221 and a plurality of stabilizing pressing claws 222. The inner side of the stabilizing mounting ring 221 is mounted on an outer side of the sliding through ring 213, and a through gap 223 is formed between an outer wall of the stabilizing mounting ring 221 and an inner wall of the stabilizing mounting hole 212. Inner ends of the plurality of stabilizing pressing claws 222 are respectively mounted on an outer side of the stabilizing mounting ring 221 at intervals along the circumferential direction.

[0033] Each stabilizing pressing claw 222 includes an arc elastic part 224 and a trapezoidal pressing part 225. The inner end of the arc elastic part 224 is mounted on an outer side of the stabilizing mounting ring 221, and the outer end of the arc elastic part 224 is arranged towards the center. The inner end of the trapezoidal pressing part 225 is mounted on an outer side of the arc elastic part 224. An arc fitting surface 226 is concavely provided on an inner wall of the trapezoidal pressing part 225. An arc pushing surface 227 is concavely provided on an outer wall of the trapezoidal pressing part 225.

[0034] Each stability-increasing holding element 23 includes a pressing trigger bar 231, a humanoid compression spring piece 232, a covering holding slider 233 and a covering linkage slider 234. The middle part of the pressing trigger bar 231 is slidably installed in the communication chute 218, and the inner end of the pressing trigger bar 231 is arranged in the conical groove 216. The bottom of the humanoid compression spring piece 232 is installed on the outer wall of the sliding installation ring 214. The covering holding slider 233 is slidably installed in the radial chute 219, and an inclined arc surface 235 is concavely provided on the outer side of the inner wall of the covering holding slider 233. The inclined arc surface 235 abuts against the outer wall of the elastic covering ring 215. A covering spring 237 is arranged between the outer side of the outer wall of the covering holding slider 233 and the inner wall of the radial chute 219. An inclined pushing surface 236 is concavely provided on the outer side of the outer wall of the covering holding slider 233. The middle part of the covering linkage slider 234 is slidably installed in the linkage chute 240, and a triggering inclined surface 238 is concavely provided on the inner side of the inner wall of the covering linkage slider 234. The triggering inclined surface 238 abuts against the inclined pushing surface 236, and the outer end of the covering linkage slider 234 is arranged in the conical groove 216.

[0035] The covering linkage slider 234 includes a central sliding part 261, an arc sliding fitting part 262 and an inner end pressing part 263. The bottom of the central sliding part 261 is slidably installed in the middle of the communication chute 218, and the top of the central sliding part 261 is slidably installed in the middle of the installation adjustment chute 242. A linkage spring 264 is arranged between the outer side of the central sliding part 261 and the outer side of the installation adjustment chute 242. The inner side of the inner end pressing part 263 is installed at the outer bottom of the central sliding part 261. The inner end pressing part 263 is made of an elastic material, and the thickness of the inner end pressing part 263 gradually decreases from outside to inside. An inclined deformation surface 265 is concavely provided on the outer side of the top surface of the inner end pressing part 263. The bottom surface of the inner end pressing part 263 abuts against the arc pressing surface 227. The top surface of the inner end pressing part 263 slidably fits on the top surface of the arc fitting chute 241. The outer side of the inner end pressing part 263 is installed at the inner bottom of the central sliding part 261. An arc sliding surface 266 is concavely provided on the top surface of the inner end pressing part 263.

[0036] The humanoid compression spring piece 232 includes a long arc part 251, a short arc part 252, a sliding arc part 253 and an inclined pressing part 254. The bottom of the long arc part 251 is installed on the inner side of the outer wall of the sliding installation ring 214, and the middle part of the outer wall of the long arc part 251 abuts against the outer end of the covering linkage slider 234. The bottom of the short arc part 252 is installed on the outer side of the outer wall of the sliding installation ring 214. The top of the short arc part 252 is installed in the middle of the inner wall of the long arc part 251. The inner side of the inner end pressing part 263 abuts against the middle part of the outer wall of the short arc part 252. The inner side of the bottom of the sliding arc part 253 is installed on the top of the long arc part 251, and the top of the sliding arc part 253 slidably fits on the inner wall of the arc sliding surface 217. The top of the inclined pressing part 254 is installed on the outer side of the bottom of the sliding arc part 253, and the bottom of the inclined pressing part 254 abuts against the arc sliding surface 266.

[0037] The test connection component 30 includes a test connection inner shell 31, a test rotating outer shell 32, and a test stabilizing element 33. The inner side of the test connection inner shell 31 is installed inside the calibration connection outer shell 21. On the inner side of the outer wall of the test connection inner shell 31, a rotating mounting ring 311 is convexly provided. Inside the test rotating outer shell 32, a rotating cavity 321 is concavely provided, and the rotating cavity 321 is rotatably mounted in the rotating mounting ring 311. In the middle of the outer side of the test rotating outer shell 32, a threaded connection cylinder 322 is convexly provided. The test stabilizing element 33 is installed in the test connection inner shell 31.

[0038] On the outer side of the test connection inner shell 31, an annular sliding groove 313 is concavely provided. On the outer wall of the rotating mounting ring 311, an annular mounting groove 314 is concavely provided. Along the circumferential direction, a plurality of first communication holes 315 are concavely provided at intervals on the inner side of the annular sliding groove 313, and the plurality of first communication holes 315 are all communicated with the annular mounting groove 314. On the outer side of the inner wall of the test connection inner shell 31, a conical positioning ring 316 is convexly provided.

[0039] The test stabilizing element 33 includes a stabilizing push ring 331 and a stabilizing airbag 332. The inner side of the stabilizing push ring 331 is slidably mounted in the annular sliding groove 313, and a plurality of compression springs 333 are arranged at intervals along the circumferential direction between the inner side of the stabilizing push ring 331 and the inner side of the annular sliding groove 313. On the inner side of the inner wall of the stabilizing push ring 331, a sealing ring 334 is provided, and the sealing ring 334 is slidably arranged on the inner wall of the annular sliding groove 313. The stabilizing airbag 332 is installed in the annular mounting groove 314, and a plurality of second communication holes 335 are concavely provided at intervals along the circumferential direction on the outer side of the stabilizing airbag 332, and the plurality of second communication holes 335 are respectively communicated with the plurality of first communication holes 315.

[0040] Please refer to Figures 1 to 2, A calibration device for a shielding effectiveness test system, including an isolation circuit board 10, two shielding cylinders 11, two support rings 12, two closed connection cylinders 13, a copper core 14, and two calibration component connectors. There are copper-clad laminates on both sides of the isolation circuit board 10. The inner sides of the two shielding cylinders 11 are respectively connected to the outer sides of the two copper-clad laminates. The cross-section of the isolation circuit board 10 is circular and its outer diameter is the same as that of the two shielding cylinders 11. There is a chip resistor 15 on the side wall of the isolation circuit board 10. A copper core preset hole 16 is recessed in the middle of the side wall of the isolation circuit board 10. The outer walls of the two support rings 12 are respectively installed in the middle of the inner walls of the two shielding cylinders 11. The inner sides of the two closed connection cylinders 13 are respectively installed on the outer sides of the two shielding cylinders 11. A connection thread groove 18 is recessed at the outer end of the inner wall of each closed connection cylinder 13. The middle of the copper core 14 is installed in the copper core preset hole 16, and both ends of the outer wall of the copper core 14 are respectively connected to the inner walls of the two support rings 12. Copper core plugs 17 protrude from both ends of the copper core 14, and the two copper core plugs 17 respectively protrude outside the two closed connection cylinders 13. The two calibration component connectors are respectively threadedly connected to the connection thread grooves 18 of the two closed connection cylinders 13 through calibration thread grooves 210.

[0041] For example, in one embodiment: Air is used as the medium between the inner walls of the two closed connection cylinders 13 and the two ends of the outer wall of the copper core 14. Due to the low-loss characteristics of air, the transmission loss of the signal in the cable is very small, and long-distance high-quality transmission can be achieved. At the same time, the air dielectric coaxial has broadband characteristics and can maintain stable electrical transmission characteristics within a relatively wide frequency band, which is very suitable as a standard sample. In addition, since air is used as the medium, the internal structure is relatively simple and there is no other insulator material, making the standard sample have good anti-interference ability, reducing the influence of external interference on the signal, and cooperating with the isolation circuit board 10 to form a discontinuous air coaxial structure. And because there is a chip resistor 15 on the side wall of the isolation circuit board 10, the impedance characteristics of the circuit can be changed by resistors with different resistance values, so as to obtain different transfer impedance values and shielding attenuation values to meet the diverse shielding effectiveness calibration requirements.

[0042] The shielding cylinder 11 is made of copper. On the one hand, it can ensure good shielding characteristics, and on the other hand, it provides good support for the standard sample. Since the traditional cable selects a braided copper mesh as the shielding layer on the outer layer, it is relatively easy to be bent by external forces, resulting in the influence on its shielding characteristic parameters. The present invention selects a copper tube as the shielding layer material. Since the copper tube has sufficient hardness, it is not easily affected by external forces during the calibration process, thus ensuring the stability of the shielding characteristic parameters and the reliability of the calibration results.

[0043] For example, in one embodiment: When connection is required, the calibration connection housing 21 is threadedly connected to the connection thread groove 18 of the closed connection cylinder 13 through the calibration thread groove 210. At the same time, the copper core 14 is successively passed through the copper core stabilizing element 22, slid through the ring 213, slidably mounted ring 214, elastic coating ring 215, and the inner cavity of the test connection inner shell 31, and finally the inner side of the outer wall of the copper core plug 17 abuts against the inner wall of the conical positioning ring 316.

[0044] When the copper core 14 passes through the copper core stabilizing element 22, the outer ends of the plurality of stabilizing pressing claws 222 will be pushed by the outer wall of the copper core 14 to move outward to the outer edge, thereby squeezing the arc-shaped sliding fitting portion 262 of the coating linkage slider 234, and then squeezing the coating linkage slider 234 to move inward, causing the linkage spring 264 to extend. When the copper core 14 passes through the elastic coating ring 215, the elastic coating ring 215 will expand outward, thereby pushing the coating abutting slider 233 to move, causing the coating spring 237 to be compressed. Since the trigger inclined surface 238 abuts against the inclined pushing surface 236, the coating linkage slider 234 will move outward, thereby pushing the long arc portion 251 of the human-shaped compression spring piece 232, and then the sliding arc portion 253 will slide slightly outward along the arc-shaped sliding surface 217, causing the inclined pressing portion 254 to move accordingly. Furthermore, the bottom of the inclined pressing portion 254 abuts against the outer side of the arc-shaped sliding surface 266 on the inwardly moved inner end pushing portion 263. And when the coating linkage slider 234 moves inward, since the inner side of the inner end pushing portion 263 abuts against the middle of the outer wall of the short arc portion 252, the human-shaped compression spring piece 232 will be pushed to deform. After the copper core 14 passes through, the plurality of stabilizing pressing claws 222 and the elastic coating ring 215 will perform multi-point and stable fastening connection with coating property on the copper core 14, ensuring the tight connection and stability of the copper core 14 after connection.

[0045] When it is necessary to install the calibration device of the shielding effectiveness test system with the connector of the calibration part connected thereto on the interface of the shielding effectiveness test system, thread the threaded connection cylinder 322 onto the interface of the shielding effectiveness test system, so that the copper core 14 will be inserted into the shielding effectiveness test system for shielding effectiveness testing. During the threading process of the threaded connection cylinder 322 onto the interface of the shielding effectiveness test system, the interface groove recessed in the interface will push the stable push ring 331 to move inward, and then compress the air in the original annular sliding groove 313 to enter the stable airbag 332 along the plurality of first communication holes 315 and the plurality of second communication holes 335, causing the stable airbag 332 to gradually expand and abut against the inner wall of the rotation cavity 321, making the rotation of the test rotation housing 32 increasingly difficult until the outer wall of the stable airbag 332 completely fits the inner wall of the rotation cavity 321 to complete the threaded connection, so as to avoid over-tightening or loosening during tightening. Moreover, the stable airbag 332, the plurality of stable pressing claws 222 and the elastic coating ring 215 provide buffering for the unconnected part to improve its impact resistance and effectively ensure the stability during the test process. And the installation process is simple and convenient, only requiring the rotation of the calibration connection housing 21 and the test rotation housing 32, without complicated procedures.

[0046] Installation process: A plurality of stability-enhancing and supporting elements 23 are installed at intervals in the circumferential direction in the hollow cavity 211. The inner side of the stable installation ring 221 is installed on the outer side of the sliding-through ring 213, and a passing gap 223 is formed between the outer wall of the stable installation ring 221 and the inner wall of the stable installation hole 212. The inner ends of a plurality of stable pressing claws 222 are respectively installed at intervals in the circumferential direction on the outer side of the stable installation ring 221. The inner end of the arc-shaped elastic part 224 is installed on the outer side of the stable installation ring 221, and the outer end of the arc-shaped elastic part 224 is arranged towards the center. The inner end of the trapezoidal pressing part 225 is installed on the outer side of the arc-shaped elastic part 224. The covering and supporting slider 233 is slidably installed in the radial chute 219, and the inclined arc surface 235 abuts against the outer wall of the elastic covering ring 215. The middle part of the covering linkage slide bar 234 is slidably installed in the linkage chute 240, and the triggering inclined surface 238 abuts against the inclined pushing surface 236. The bottom of the central sliding part 261 is slidably installed in the middle of the communicating chute 218, and the top of the central sliding part 261 is slidably installed in the middle of the installation adjustment chute 242. The inner side of the inner end pressing part 263 is installed on the outer side bottom of the central sliding part 261. The bottom surface of the inner end pressing part 263 abuts against the arc-shaped pressing surface 227. The top surface of the inner end pressing part 263 is slidably attached to the top surface of the arc-shaped fitting chute 241. The outer side of the inner end pressing part 263 is installed on the inner side bottom of the central sliding part 261. The bottom of the long arc part 251 is installed on the inner side of the outer wall of the sliding installation ring 214, and the middle part of the outer wall of the long arc part 251 abuts against the outer end of the covering linkage slide bar 234. The bottom of the short arc part 252 is installed on the outer side of the outer wall of the sliding installation ring 214. The top of the short arc part 252 is installed on the middle part of the inner wall of the long arc part 251, and the inner side of the inner end pressing part 263 abuts against the middle part of the outer wall of the short arc part 252. The inner side of the bottom of the sliding arc part 253 is installed on the top of the long arc part 251, and the top of the sliding arc part 253 is slidably attached to the inner wall of the arc-shaped sliding surface 217. The top of the inclined pressing part 254 is installed on the outer side of the bottom of the sliding arc part 253, and the bottom of the inclined pressing part 254 abuts against the arc-shaped sliding surface 266. The inner side of the test connection inner shell 31 is installed on the inner side of the calibration connection outer shell 21. The rotation cavity 321 is rotatably installed in the rotation installation ring 311. The inner side of the stable pushing ring 331 is slidably installed in the annular chute 313. The stable airbag 332 is installed in the annular installation groove 314. Two calibration component connectors are respectively threadedly connected to the connection thread grooves 18 of the two closed connection cylinders 13 through the calibration thread grooves 210.

[0047] The present invention can achieve:

[0048] 1. The present invention can form a discontinuous air coaxial structure, using air as the medium to achieve low-loss transmission of signals in the cable. A patch resistor 15 is provided on the side wall of the isolation circuit board 10, so that by using resistors with different resistance values, the impedance characteristics of the circuit can be changed, thereby obtaining different transfer impedance values and shielding attenuation values to meet the diverse shielding efficiency calibration requirements.

[0049] 2. The installation process of the present invention is simple and convenient. It only requires rotating the calibration connection housing 21 and the test rotating housing 32, without complicated procedures. Moreover, by using the test connection component 30, the stable airbag 332 can be inflated during the connection process to adapt to different connection states, and provide additional support and stability, ensuring that there will be no over-tightening or loosening during the connection process. At the same time, it can provide a multi-point and wrap-around fastening connection to form a multiple protection mechanism to ensure the stability of the copper core 14 after connection, and can effectively absorb impact force, reduce the influence of external impact on the connection part, improve the anti-impact ability of the system, and ensure stable operation in various environments.

[0050] The above-described embodiments only represent several embodiments of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. A calibration component connector, characterized in that: It includes a calibration connection component (20) and a test connection component (30), a calibration connection housing (21), a copper core stabilizing element (22) and a plurality of stability-enhancing abutting elements (23). On the outer side of the outer wall of the calibration connection housing (21), a calibration thread groove (210) is concavely provided. Inside the calibration connection housing (21), a hollow cavity (211) is formed. On the outer side of the hollow cavity (211), a stable mounting hole (212) is concavely provided. In the middle of the hollow cavity (211), a sliding-through ring (213) protrudes. On the inner side of the sliding-through ring (213), a sliding mounting ring (214) protrudes. On the inner side of the sliding mounting ring (214), an elastic coating ring (215) protrudes, and the diameter of the elastic coating ring (215) gradually decreases from outside to inside. In the middle of the inner wall of the hollow cavity (211), a conical groove (216) is concavely provided. On the inner wall of the conical groove (216), an arc-shaped sliding surface (217) is concavely provided. Along the circumferential direction outside the conical groove (216), a plurality of communicating chutes (218) are concavely provided at intervals. The outer ends of the plurality of communicating chutes (218) are all connected to the stable mounting hole (212). On the outer side of each communicating chute (218), an arc-shaped fitting chute (241) is concavely provided. In the middle of the inner wall of each communicating chute (218), a mounting adjustment chute (242) is concavely provided. Along the circumferential direction outside the inner wall of the hollow cavity (211), a plurality of radial chutes (219) are concavely provided at intervals. In the middle of the outer side of each radial chute (219), a linkage chute (240) is concavely provided, and the plurality of linkage chutes (240) are all connected to the conical groove (216). The inner side of the copper core stabilizing element (22) is mounted on the outer side of the sliding-through ring (213). The plurality of stability-enhancing abutting elements (23) are mounted in the hollow cavity (211) at intervals along the circumferential direction. The inner side of the test connection component (30) is connected to the inner side of the calibration connection housing (21).

2. The calibration part connector according to claim 1, wherein: The copper core stabilizing element (22) includes a stable mounting ring (221) and a plurality of stable pressing claws (222). The inner side of the stable mounting ring (221) is mounted on the outer side of the sliding-through ring (213), and a passing gap (223) is formed between the outer wall of the stable mounting ring (221) and the inner wall of the stable mounting hole (212). The inner ends of the plurality of stable pressing claws (222) are respectively mounted on the outer side of the stable mounting ring (221) at intervals along the circumferential direction.

3. The calibration piece connector according to claim 2, characterized in that: Each stable pressing claw (222) includes an arc-shaped elastic part (224) and a trapezoidal pressing part (225). The inner end of the arc-shaped elastic part (224) is mounted on the outer side of the stable mounting ring (221), and the outer end of the arc-shaped elastic part (224) is arranged towards the center. The inner end of the trapezoidal pressing part (225) is mounted on the outer side of the arc-shaped elastic part (224). An arc-shaped fitting surface (226) is concavely provided on the inner wall of the trapezoidal pressing part (225). An arc-shaped pushing surface (227) is concavely provided on the outer wall of the trapezoidal pressing part (225).

4. The calibration piece connector according to claim 3, characterized in that: Each stabilization and holding element (23) includes a pressing trigger bar (231), a humanoid compression spring piece (232), a covering holding slider (233), and a covering linkage slider (234). The middle part of the pressing trigger bar (231) is slidably installed in the connecting chute (218), and the inner end of the pressing trigger bar (231) is arranged in the conical groove (216). The bottom of the humanoid compression spring piece (232) is installed on the outer wall of the sliding installation ring (214). The covering holding slider (233) is slidably installed in the radial chute (219), and an inclined arc surface (235) is concavely arranged on the outer side of the inner wall of the covering holding slider (233). The inclined arc surface (235) abuts against the outer wall of the elastic covering ring (215). A covering spring (237) is arranged between the outer side of the outer wall of the covering holding slider (233) and the inner wall of the radial chute (219). An inclined pushing surface (236) is concavely arranged on the outer side of the outer wall of the covering holding slider (233). The middle part of the covering linkage slider (234) is slidably installed in the linkage chute (240), and a triggering inclined surface (238) is concavely arranged on the inner side of the inner wall of the covering linkage slider (234). The triggering inclined surface (238) abuts against the inclined pushing surface (236), and the outer end of the covering linkage slider (234) is arranged in the conical groove (216).

5. The calibration piece connector according to claim 4, characterized in that: The covering linkage slider (234) includes a central sliding part (261), an arc sliding and fitting part (262), and an inner end pressing part (263). The bottom of the central sliding part (261) is slidably installed in the middle of the connecting chute (218), and the top of the central sliding part (261) is slidably installed in the middle of the installation adjustment chute (242). A linkage spring (264) is arranged between the outer side of the central sliding part (261) and the outer side of the installation adjustment chute (242). The inner side of the inner end pressing part (263) is installed at the outer bottom of the central sliding part (261). The inner end pressing part (263) is made of an elastic material, and the thickness of the inner end pressing part (263) gradually decreases from outside to inside. An inclined deformation surface (265) is concavely arranged on the outer side of the top surface of the inner end pressing part (263). The bottom surface of the inner end pressing part (263) abuts against the arc pressing surface (227). The top surface of the inner end pressing part (263) slidably fits on the top surface of the arc fitting chute (241). The outer side of the inner end pressing part (263) is installed at the inner bottom of the central sliding part (261). An arc sliding surface (266) is concavely arranged on the top surface of the inner end pressing part (263).

6. The calibration piece connector according to claim 5, wherein: The humanoid compression spring piece (232) includes a long arc portion (251), a short arc portion (252), a sliding arc portion (253) and an inclined pressing portion (254). The bottom of the long arc portion (251) is installed on the inner side of the outer wall of the sliding mounting ring (214), and the middle of the outer wall of the long arc portion (251) abuts against the outer end of the covering linkage slide bar (234). The bottom of the short arc portion (252) is installed on the outer side of the outer wall of the sliding mounting ring (214), the top of the short arc portion (252) is installed in the middle of the inner wall of the long arc portion (251), and the inner side of the inner end pressing portion (263) abuts against the middle of the outer wall of the short arc portion (252). The inner side of the bottom of the sliding arc portion (253) is installed on the top of the long arc portion (251), and the top of the sliding arc portion (253) slidably fits against the inner wall of the arc sliding surface (217). The top of the inclined pressing portion (254) is installed on the outer side of the bottom of the sliding arc portion (253), and the bottom of the inclined pressing portion (254) abuts against the arc sliding surface (266).

7. The calibration part connector according to claim 6, characterized in that: The test connection assembly (30) includes a test connection inner shell (31), a test rotating outer shell (32) and a test stabilizing element (33). The inner side of the test connection inner shell (31) is installed on the inner side of the calibration connection outer shell (21). A rotating mounting ring (311) protrudes from the inner side of the outer wall of the test connection inner shell (31). A rotating cavity (321) is recessed inside the test rotating outer shell (32), and the rotating cavity (321) is rotatably installed in the rotating mounting ring (311). A threaded connection cylinder (322) protrudes from the middle of the outer side of the test rotating outer shell (32). The test stabilizing element (33) is installed in the test connection inner shell (31).

8. The calibration component connector according to claim 7, characterized in that: An annular sliding groove (313) is recessed on the outer side of the test connection inner shell (31). An annular mounting groove (314) is recessed on the outer wall of the rotating mounting ring (311). A plurality of first communication holes (315) are recessed at intervals along the circumferential direction on the inner side of the annular sliding groove (313), and the plurality of first communication holes (315) are all communicated with the annular mounting groove (314). A conical positioning ring (316) protrudes from the outer side of the inner wall of the test connection inner shell (31).

9. The calibration piece connector according to claim 8, characterized in that: The test stabilizing element (33) includes a stabilizing push ring (331) and a stabilizing airbag (332). The inner side of the stabilizing push ring (331) is slidably installed in the annular sliding groove (313), and a plurality of compression springs (333) are arranged at intervals along the circumferential direction between the inner side of the stabilizing push ring (331) and the inner side of the annular sliding groove (313). A sealing ring (334) is arranged on the inner side of the inner wall of the stabilizing push ring (331), and the sealing ring (334) is slidably arranged on the inner wall of the annular sliding groove (313). The stabilizing airbag (332) is installed in the annular mounting groove (314), and a plurality of second communication holes (335) are recessed at intervals along the circumferential direction on the outer side of the stabilizing airbag (332), and the plurality of second communication holes (335) are respectively communicated with the plurality of first communication holes (315).

10. A calibration device for a shielding effectiveness test system, characterized in that: It includes an isolation circuit board (10), two shielding cylinders (11), two support rings (12), two closed connection cylinders (13), a copper core (14), and two calibration part connectors as described in any one of claims 1 to 9. Copper-clad laminates are provided on both sides of the isolation circuit board (10). The inner sides of the two shielding cylinders (11) are respectively connected to the outer sides of the two copper-clad laminates. The cross-section of the isolation circuit board (10) is circular and its outer diameter is the same as that of the two shielding cylinders (11). A chip resistor (15) is provided on the side wall of the isolation circuit board (10). A copper core preset hole (16) is recessed in the middle of the side wall of the isolation circuit board (10). The outer walls of the two support rings (12) are respectively installed in the middle of the inner walls of the two shielding cylinders (11). The inner sides of the two closed connection cylinders (13) are respectively installed on the outer sides of the two shielding cylinders (11). A connection thread groove (18) is recessed at the outer end of the inner wall of each closed connection cylinder (13). The middle of the copper core (14) is installed in the copper core preset hole (16), and both ends of the outer wall of the copper core (14) are respectively connected to the inner walls of the two support rings (12). Copper core plugs (17) are respectively protruded at both ends of the copper core (14). The two copper core plugs (17) respectively protrude outside the two closed connection cylinders (13). The two calibration part connectors are respectively threadedly connected to the connection thread grooves (18) of the two closed connection cylinders (13) through calibration thread grooves (210).

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