Radio frequency signal test probe and radio frequency connecting line

Abstract

The utility model relates to a radio frequency signal test probe and a radio frequency connecting line, the radio frequency signal test probe is used for connecting to-be-tested equipment and performing signal transmission, the radio frequency signal test probe comprises a probe shell, a second conductor part and a mounting part, and a movable gap for the probe shell to swing is arranged between the mounting part and the probe shell. When the probe cannot be accurately aligned with the interface due to the limited space environment, the first central conductor and the second central conductor can be close to or far away from each other in the Y-axis direction through the telescopic conductive connecting part and the second conductor part capable of sliding in the probe shell; in addition, a movable gap for the probe shell to swing is arranged, so that the first central conductor and the second central conductor are deflected in the X-axis direction and the Z-axis direction, the device can be subjected to deformation adjustment in the X-axis direction, the Y-axis direction and the Z-axis direction, and the device can be inserted into and pulled out of the probe shell under the condition that the plugging environment is limited. And the interface of the equipment is still accurately aligned.

Description

Technical Field

[0001] This application relates to the field of signal test probe technology, and in particular to a radio frequency signal test probe and a radio frequency connection cable. Background Technology

[0002] The basic design of an RF test probe includes a probe tip, a support arm, a handle, and a connector. The probe tip is usually made of a highly conductive metal, such as gold or tungsten, to reduce its impact on the circuit under test.

[0003] The working principle of an RF test probe is to guide the RF signal in the circuit to the measuring device by contacting the probe tip with the circuit under test. The design of the probe needs to take into account the high-frequency signal transmission characteristics, including impedance matching and signal integrity, to ensure the accuracy of the measurement.

[0004] When existing RF test probes are assembled in connectors and connected to the device under test (DUT), the limited space during insertion may prevent the probes from being accurately aligned and inserted into the DUT's interface. This can result in poor contact between the probes and the DUT, making testing inconvenient and potentially leading to poor contact and inaccurate test results. Utility Model Content

[0005] This application provides an RF signal test probe and an RF connection cable, which can solve the problem of poor contact and inaccurate test results when the probe cannot be accurately aligned with the interface for insertion and removal due to limited probe insertion and removal.

[0006] The technical solution of this application is as follows: A radio frequency signal test probe, used to connect to the device under test and transmit signals, comprising:

[0007] The probe housing is hollow inside and comprises:

[0008] A limiting part is coaxially and fixedly assembled inside the lower end of the probe housing;

[0009] A first conductor portion, coaxially fixedly assembled inside the upper end of the probe housing, and a first center conductor is provided inside the first conductor portion; and

[0010] A retractable conductive connection part is coaxially assembled inside the probe housing, and the conductive connection part is located between the limiting part and the first conductor part;

[0011] The second conductor portion is disposed at the lower end of the probe housing and is slidably connected to the probe housing along the length direction of the probe housing. The second conductor portion has a second center conductor inside, the upper end of the second center conductor passes through the limiting portion and is connected to the first center conductor through the conductive connection portion.

[0012] The mounting part is coaxially sleeved on the upper outer side of the probe housing, and there is an movable gap between the mounting part and the probe housing for the probe housing to swing.

[0013] By adopting the above solution, when the probe cannot be accurately aligned with the interface due to space constraints, the first center conductor can move closer to or further away from the second center conductor in the Y-axis direction through the telescopic conductive connection and the second conductor that can slide inside the probe housing. In addition, by setting an movable gap that allows the probe housing to swing, the first and second center conductors can be deflected in the X and Z-axis directions, thereby enabling the device to deform and adjust in the X, Y, and Z-axis directions. This allows the device to still accurately align with the device interface even in situations where the insertion and removal environment is limited.

[0014] In one embodiment of this application, the limiting portion includes:

[0015] A fixing cylinder is coaxially mounted inside the lower end of the probe housing;

[0016] An insulating limiting member is coaxially mounted on the upper end of the fixed cylinder, and the upper end of the second central conductor passes through the insulating limiting member and slides inside the insulating limiting member.

[0017] By adopting the above scheme, by setting an insulating limiting member that allows the second center conductor to slide relative to each other inside, the displacement of the second center conductor in the X-axis and Z-axis directions is restricted, while the second center conductor can be allowed to slide along its length in the limiting part, so as to make adjustments for expansion and contraction deformation according to the actual insertion and removal space conditions.

[0018] In one embodiment of this application, the first conductor portion further includes an insulating fitting, which is fixedly assembled inside the upper end of the probe housing. The first center conductor passes through the insulating fitting along its length, with its upper end extending outside the insulating fitting and its lower end connected to the conductive connection portion.

[0019] In one embodiment of this application, the conductive connection portion includes:

[0020] A connecting pipe, the upper end of which is fixedly connected to the lower end of the insulating fitting, and the lower end of which is fixedly connected to the insulating limiting member;

[0021] An elastic conductive element, wherein the upper end of the elastic conductive element is connected to the first central conductor and the lower end is connected to the second central conductor.

[0022] By adopting the above scheme and setting up an elastic conductive element, when the device is plugged in, the first center conductor and the second center conductor can move closer to each other under pressure, so that the entire device can make elastic deformation and electrically connect the first center conductor and the second center conductor, thereby enabling the device to transmit signals.

[0023] In one embodiment of this application, the second conductor portion further includes:

[0024] A movable housing is slidably mounted on the lower end of the probe housing along the length direction of the probe housing, and the upper end of the movable housing is sleeved on the outside of the connecting tube, with a first elastic element provided between the movable housing and the connecting tube;

[0025] An insulating support is coaxially mounted inside the lower end of the movable housing. An expansion gap is formed between the upper end of the insulating support and the connecting pipe. The lower end of the second central conductor passes through the insulating support, and the upper end passes through the connecting pipe and is connected to the elastic conductive element.

[0026] By adopting the above scheme, when the device is plugged into the interface, the movable outer shell first contacts the interface end, and under pressure, it moves in the expansion gap and drives the first elastic element to compress, thereby enabling the device to undergo a certain degree of compression deformation according to the actual working conditions.

[0027] In one embodiment of this application, the mounting part includes:

[0028] Mounting plate, which is disposed on the outside of the probe housing;

[0029] The second elastic element is sleeved on the probe housing, with its lower end connected to the probe housing and its upper end connected to the mounting plate.

[0030] By adopting the above scheme, after the movable housing moves a distance of one telescopic gap, the movable housing can also abut against the probe housing and drive the second elastic element to undergo elastic deformation, thereby enabling the entire probe housing and the mounting plate to make relative displacement, improving the device's ability to adapt to different interfaces and working conditions.

[0031] In one embodiment of this application, the elastic conductive element, the first elastic element, and the second elastic element are all floating springs made of copper alloy.

[0032] By adopting the above scheme, using a copper alloy floating spring as an elastic conductive element, a first elastic element, and a second elastic element, the device can ensure good elastic deformation capability. The elastic conductive element can also electrically connect the first center conductor and the second center conductor, enabling the device to transmit signals.

[0033] In one embodiment of this application, the mounting part further includes an assembly ring, which is embedded in the mounting plate. The diameter of the probe housing is smaller than the inner wall diameter of the assembly ring. The upper end of the probe housing passes through the assembly ring and forms the movable gap with the assembly ring. An annular snap-fit ​​portion is coaxially provided on the outside of the probe housing. The diameter of the snap-fit ​​portion is larger than the inner wall diameter of the assembly ring, which is used to snap the probe housing onto the assembly ring.

[0034] By adopting the above scheme, an assembly ring that forms a movable gap with the probe housing is used, and a snap-fit ​​part with a diameter larger than the assembly ring is provided on the probe housing and positioned above the assembly ring, so that the probe housing will not move downward from the movable gap. At the same time, the second elastic member can always abut against the mounting plate and the probe housing and prevent them from getting close, so that the probe housing can only move unidirectionally along the compression direction of the second elastic member.

[0035] In one embodiment of this application, the mounting plate is provided with mounting holes.

[0036] By adopting the above solution, when dealing with interfaces that require a stable and durable connection, bolts can be used to fix the mounting plate and the entire probe into the interface by passing the bolts through the mounting holes, thereby improving its installation stability and preventing it from detaching from the interface.

[0037] This utility model also relates to a radio frequency connection cable.

[0038] To achieve the above objectives, the technical solution of this application is as follows: a radio frequency (RF) connection line, comprising: a cable, and an RF signal test probe as described above, wherein the RF signal test probe is mounted on one end of the cable and is electrically connected to the cable.

[0039] By adopting the above scheme and connecting the cable to the test probe, users can easily select an RF connection cable with signal transmission and probe elastic deformation function for signal transmission according to the actual interface situation and space environment.

[0040] In summary, this application includes at least one of the following beneficial technical effects:

[0041] 1. By setting a retractable conductive connection part, the first center conductor inside the first conductor part and the second center conductor inside the second conductor part are electrically connected by the conductive connection part. At the same time, by utilizing its own retractability, the second center conductor can expand and contract relative to each other according to the space constraints during actual insertion. Without affecting its signal transmission function, it can make adaptive deformation adjustments to different interfaces and actual working conditions.

[0042] 2. By setting up a mounting part and utilizing the movable gap between the mounting part and the probe housing, the probe housing can swing on the mounting part according to the actual working conditions, thereby adjusting the direction of probe insertion and removal. This allows for angular adjustment based on the orientation and space of the device interface during actual insertion and removal.

[0043] 3. By setting a first elastic element, the movable housing can be adjusted according to the size of the space outside the device interface during insertion, and retracted inside the probe housing to shorten the length of the entire probe, so as to adapt to the situation where there is insufficient space during insertion and removal.

[0044] 4. By setting a second elastic element, the movable housing can move the probe housing while adjusting the length of the probe according to the actual working conditions. This causes the second elastic element to compress, allowing the entire probe housing to move away from the mounting plate. This enables adjustments to be made to accommodate different actual working conditions. Attached Figure Description

[0045] Figure 1 This is a front view of a radio frequency signal test probe provided in an embodiment of this application;

[0046] Figure 2 This is a planar schematic diagram of a radio frequency signal test probe provided in an embodiment of this application;

[0047] Figure 3 This is a plan view of a radio frequency signal test probe mounting plate provided in an embodiment of this application;

[0048] Figure 4 This is a cross-sectional view of a radio frequency signal test probe provided in an embodiment of this application;

[0049] Figure 5 This is a planar schematic diagram of a radio frequency connection line provided in the embodiments of this application.

[0050] Explanation of reference numerals in the attached drawings: 1. Probe housing; 11. Limiting part; 110. Fixing cylinder; 111. Insulating limiting component; 12. First conductor part; 120. Insulating fitting; 121. First center conductor; 13. Conductive connection part; 130. Connecting tube; 131. Elastic conductive component; 14. Snap-fit ​​part; 2. Second conductor part; 20. First elastic component; 21. Movable housing; 22. Insulating support component; 23. Second center conductor; 230. Telescopic gap; 3. Mounting part; 31. Mounting plate; 311. Movable gap; 32. Second elastic component; 33. Assembly ring; 34. Mounting hole; 4. Cable. Detailed Implementation

[0051] The following is in conjunction with the appendix Figure 1-4 This application provides a more detailed description of a radio frequency signal test probe and radio frequency connection cable.

[0052] Please see Figure 1-4 This application provides an embodiment of a radio frequency signal test probe for connecting to a device interface and transmitting signals. It includes a probe housing 1, a second conductor portion 2, and a mounting portion 3. The probe housing 1 is hollow. The second conductor portion 2 is disposed at the lower end of the probe housing 1 and slidably connected to the probe housing 1 along its length. A second center conductor 23 is provided inside the second conductor portion 2. The upper end of the second center conductor 23 passes through the limiting portion 11 and is connected to the first center conductor 121 via a conductive connection portion 13. The mounting portion 3 is coaxially sleeved on the upper exterior of the probe housing 1. A movable gap 311 is provided between the mounting portion 3 and the probe housing 1 for the probe housing 1 to swing. The probe housing 1 includes a limiting portion 11, a first conductor portion 12, and a retractable conductive connection portion 13. A first conductor 12 is coaxially fixedly mounted inside the lower end of the probe housing 1, and a first center conductor 121 is provided inside the first conductor 12. A conductive connection 13 is coaxially mounted inside the probe housing 1, and the conductive connection 13 is located between the limiting part 11 and the first conductor 12 and connected to the limiting part 11 and the first conductor 12. By setting the probe housing 1 and the second conductor 2 to be retractable and expandable relative to each other, and the limiting part 11 and the first conductor 12 to be retractable and expandable relative to each other, the device can extend and retract in its own length direction. At the same time, an movable gap 311 is set between the mounting plate 31 and the probe housing 1, so that the entire probe housing 1 and the second conductor 2 can swing on the mounting part 3. The combination of the two movement modes enables the device to deform and adjust according to the actual working conditions.

[0053] Please see Figure 4The limiting part 11 includes a fixed cylinder 110 and an insulating limiting member 111. The fixed cylinder 110 is coaxially mounted inside the lower end of the probe housing 1, and the insulating limiting member 111 is coaxially mounted to the upper end of the fixed cylinder 110. The upper end of the second center conductor 23 passes through the insulating limiting member 111 and slides inside the insulating limiting member 111. By setting the second center conductor 23 and the insulating limiting member 111, which are capable of relative displacement, the second center conductor 23 can only move linearly along the insulating limiting member 111 when moving, which facilitates the extension and retraction adjustment of the device.

[0054] Please see Figure 4 The first conductor portion 12 further includes an insulating fitting 120, which is fixedly mounted inside the upper end of the probe housing 1. The first center conductor 121 extends through the insulating fitting 120 along its length direction. The upper end of the first center conductor 121 extends outside the insulating fitting 120, and the lower end is connected to the conductive connection portion 13. By providing the insulating fitting 120 and placing it outside the first center conductor 121, the first center conductor 121 is stably fixed, while its insulation performance is ensured.

[0055] Please see Figure 4 The conductive connection part 13 includes a connecting pipe 130 and an elastic conductive element 131. The upper end of the connecting pipe 130 is connected and fixed to the lower end of the insulating assembly, and the lower end is connected and fixed to the insulating limiting element 111. The upper end of the elastic conductive element 131 is connected to the first central conductor 121, and the lower end is connected to the second central conductor 23. By setting the conductive connection part 13, the stability of the electrical connection between the first central conductor 121 and the second central conductor 23 can be ensured while allowing the device to extend and retract. This allows the second central conductor 23 to move inside the device according to actual working conditions, while simultaneously ensuring that the second central conductor 23 and the first central conductor 121 are electrically connected.

[0056] Please see Figure 4The second conductor portion 2 further includes: a movable outer shell 21 and an insulating support member 22. The movable outer shell 21 is slidably mounted on the lower end of the probe outer shell 1 along the length direction of the probe outer shell 1. The upper end of the movable outer shell 21 is sleeved on the outside of the connecting tube 130, and a first elastic member 20 is provided between the movable outer shell 21 and the connecting tube 130. The insulating support member 22 is coaxially mounted inside the lower end of the movable outer shell 21. A telescopic gap 230 is formed between the upper end of the insulating support member 22 and the connecting tube 130. The lower end of the second central conductor 23 passes through the insulating support member 22, and the upper end passes through the connecting tube 130 and is connected to the elastic conductive member 131. By providing an insulating support member 22 that can wrap around the second central conductor 23, the second central conductor 23 can undergo relative displacement with respect to the movable outer shell 21 and the insulating support member 22, allowing the movable outer shell 21 to move and telescopically along the length direction of the probe outer shell 1.

[0057] Please see Figure 4 The mounting part 3 includes a mounting plate 31 and a second elastic element 32. The mounting plate 31 is disposed outside the probe housing 1. The second elastic element 32 is sleeved on the probe housing 1. The lower end of the second elastic element 32 is connected to the probe housing 1, and the upper end is connected to the mounting plate 31. The elastic conductive element 131, the first elastic element 20, and the second elastic element 32 are all copper alloy floating springs. The mounting part 3 also includes an assembly ring 33, which is embedded in the mounting plate 31. The diameter of the probe housing 1 is smaller than the inner wall of the assembly ring 33. The probe housing 1 has a diameter, and its upper end passes through the assembly ring 33, forming a movable gap 311 between the probe housing 1 and the assembly ring 33. An annular snap-fit ​​part 14 is coaxially provided on the outside of the probe housing 1. The diameter of the snap-fit ​​part 14 is larger than the inner wall diameter of the assembly ring 33, and is used to snap the probe housing 1 onto the assembly ring 33. By providing a movable gap 311 on the mounting plate 31 that allows the probe housing 1 to swing, the device can swing the probe according to the actual insertion requirements and space size to change the direction of the probe, thereby adjusting the insertion angle of the probe.

[0058] In this embodiment, the insulating support 22, the insulating limiting member 111, and the insulating fitting 120 are all components made of polytetrafluoroethylene (PTFE).

[0059] The mounting plate 31 has mounting holes 34. By setting mounting holes 34 on the mounting plate 31, the mounting holes 34 are installed on the equipment using fastening bolts, thereby improving the stability of the device when it is plugged into the equipment.

[0060] Please see Figure 5 This utility model also relates to a radio frequency connection cable.

[0061] To achieve the above objectives, the technical solution of this application is as follows: A radio frequency (RF) connector includes a cable 4 and an RF signal test probe. The RF signal test probe is mounted on one end of the cable 4 and electrically connected to the cable. In addition, a conventional RF interface is provided at the other end of the cable, thereby enabling the RF connector to perform signal transmission. By providing an RF signal test probe with elastic extension and swing angle adjustment function at one end of the cable, the RF connector can still be accurately and stably plugged in even in environments with poor plugging and unplugging conditions.

[0062] In summary, when insertion and removal conditions are poor and space is insufficient for the probe to be accurately aligned with the device interface, the device is first held and one end of its movable housing 21 is inserted into the device interface. Upon receiving pressure, the movable housing 21 moves along the length of the probe housing 1, compressing the first elastic element 20. When the movable housing 21 reaches the end of the telescopic gap 230 and contacts the fixed cylinder 110, the probe housing 1 no longer moves relative to the probe housing 1. At this point, the probe undergoes a shortening adjustment. Then, the movable housing 21 abuts against the fixed cylinder 110, and the fixed cylinder 110 moves the entire probe housing 1 along the probe within the movable gap 311 of the mounting plate 31. The probe housing 1 moves along its own length, allowing for secondary positional adjustments to the device based on actual working conditions. Simultaneously, the probe can swing slightly within the movable gap 311, adjusting the insertion angle without affecting the electrical connection. Furthermore, when the movable housing 21 retracts into the probe housing 1, and the second center conductor 23 is inserted into the interface, the second center conductor 23 can also contract under the elastic force of the elastic conductive element 131, allowing the device to float in various directions according to actual insertion and removal conditions and working conditions without affecting the stability of the electrical connection, thereby improving the accuracy of the insertion.

[0063] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A radio frequency signal test probe for connecting to a device interface and transmitting signals, characterized in that, include: A probe housing (1), the probe housing (1) being hollow inside, the probe housing (1) comprising: A limiting part (11) is coaxially fixedly assembled inside the lower end of the probe housing (1); A first conductor portion (12) is coaxially fixedly mounted inside the upper end of the probe housing (1), and a first center conductor (121) is provided inside the first conductor portion (12); and A retractable conductive connection part (13) is coaxially mounted inside the probe housing (1). The conductive connection part (13) is located between the limiting part (11) and the first conductor part (12) and is connected to the limiting part (11) and the first conductor part (12). The second conductor part (2) is disposed at the lower end of the probe housing (1) and is slidably connected to the probe housing (1) along the length direction of the probe housing (1). The second conductor part (2) is provided with a second center conductor (23). The upper end of the second center conductor (23) passes through the limiting part (11) and is connected to the first center conductor (121) through the conductive connection part (13). Mounting part (3) is coaxially sleeved on the upper outer side of the probe housing (1), and there is an movable gap (311) between the mounting part (3) and the probe housing (1) for the probe housing (1) to swing.

2. The radio frequency signal test probe according to claim 1, characterized in that: The limiting part (11) includes: A fixing cylinder (110) is coaxially mounted inside the lower end of the probe housing (1); An insulating limiting member (111) is coaxially mounted on the upper end of the fixed cylinder (110). The upper end of the second center conductor (23) passes through the insulating limiting member (111) and slides inside the insulating limiting member (111).

3. The radio frequency signal test probe according to claim 2, characterized in that: The first conductor portion (12) further includes an insulating fitting (120), which is fixedly mounted inside the upper end of the probe housing (1). The first center conductor (121) passes through the insulating fitting (120) along its length direction. The upper end of the first center conductor (121) extends outside the insulating fitting (120), and the lower end is connected to the conductive connection portion (13).

4. The radio frequency signal test probe according to claim 3, characterized in that: The conductive connection portion (13) includes: A connecting pipe (130) is provided, the upper end of which is connected and fixed to the lower end of the insulating fitting (120), and the lower end of which is connected and fixed to the insulating limiting member (111). An elastic conductive element (131) is provided, the upper end of which is connected to the first central conductor (121) and the lower end of which is connected to the second central conductor (23).

5. The radio frequency signal test probe according to claim 4, characterized in that: The second conductor portion (2) further includes: A movable housing (21) is slidably mounted on the lower end of the probe housing (1) along the length direction of the probe housing (1). The upper end of the movable housing (21) is sleeved on the outside of the connecting tube (130), and a first elastic element (20) is provided between the movable housing (21) and the connecting tube (130). An insulating support (22) is coaxially mounted inside the lower end of the movable housing (21). An expansion gap (230) is formed between the upper end of the insulating support (22) and the connecting pipe (130). The lower end of the second center conductor (23) passes through the insulating support (22), the upper end passes through the connecting pipe (130), and is connected to the elastic conductive element (131).

6. The radio frequency signal test probe according to claim 5, characterized in that: The mounting part (3) includes: Mounting plate (31), which is disposed outside the probe housing (1); The second elastic element (32) is sleeved on the probe housing (1). The lower end of the second elastic element (32) is connected to the probe housing (1), and the upper end is connected to the mounting plate (31).

7. The radio frequency signal test probe according to claim 6, characterized in that: The elastic conductive element (131), the first elastic element (20), and the second elastic element (32) are all floating springs made of copper alloy.

8. The radio frequency signal test probe according to claim 6, characterized in that: The mounting part (3) further includes an assembly ring (33), which is fitted onto the mounting plate (31). The diameter of the probe housing (1) is smaller than the inner wall diameter of the assembly ring (33). The upper end of the probe housing (1) passes through the assembly ring (33) and forms the movable gap (311) with the assembly ring (33). An annular snap-fit ​​part (14) is coaxially provided on the outside of the probe housing (1). The diameter of the snap-fit ​​part (14) is larger than the inner wall diameter of the assembly ring (33) and is used to snap the probe housing (1) onto the assembly ring (33).

9. A radio frequency signal test probe according to claim 6, characterized in that: The mounting plate (31) has mounting holes (34).

10. A radio frequency connector, characterized in that, include: Cable (4); as well as The radio frequency signal test probe as described in any one of claims 1-9 is assembled at one end of the cable (4) and electrically connected to the cable.

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