High-stability radio frequency test probe seat structure
By introducing a combination of ball bearings and a strong magnetic plate into the RF test probe holder, the problems of difficult adjustment and inaccurate positioning in the prior art are solved, achieving efficient and stable probe holder adjustment and precise alignment, thus extending the equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN XINNUO MENGDA TECH CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-04-10
AI Technical Summary
Existing RF test probe holders suffer from difficulties in adjustment, high moving resistance, and inaccurate positioning during the adjustment process. In particular, the static friction and stick-slip effect caused by the magnetic fixing design affect the adjustment efficiency and accuracy.
The design employs a combination of ball bearings and magnetic fixation. The ball bearings adaptively adjust their position within a small range, and the strong magnetic plate ensures the stability and precise positioning of the probe holder. The rolling characteristics reduce friction and improve adjustment efficiency and accuracy.
It achieves efficient and precise adjustment and stable positioning of the probe holder, reduces mechanical wear, extends equipment life, and improves the alignment accuracy between the probe and the contact.
Smart Images
Figure CN224109525U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to radio frequency test technical field, concretely is a kind of high-stability radio frequency test probe seat structure. BACKGROUND
[0002] Radio frequency test probe (RF Probe) is used for the measurement of high-frequency signal (usually from several hundred MHz to millimeter wave / terahertz), such as the test of chip (IC), antenna, PCB microstrip line, radio frequency module, etc., and its core goal is to minimize signal loss, maintain impedance matching, reduce parasitic effect, while ensuring mechanical reliability and repeatability.
[0003] When testing by probe, hierarchical adjustment is usually used to accurately position: first, the approximate position is determined by coarse adjustment probe seat, and then final positioning is completed by fine adjustment probe arm. However, current probe seats are mostly designed with magnetic attraction type fixation, which can provide stable installation basis, but there are still some adjustment difficulties when adjusting the position of coarse adjustment probe seat.
[0004] Specifically, when moving the probe seat, the strong magnetic adsorption between the probe seat and the installation substrate will generate significant static friction force, and the moving resistance is large. At the same time, "stick-slip effect" may occur during movement, resulting in discontinuous motion, which not only reduces the adjustment efficiency, but also affects the accuracy of final positioning. Therefore, a high-stability radio frequency test probe seat structure is proposed to solve the above problems. UTILITY MODEL CONTENTS
[0005] In view of the deficiencies of the prior art, the utility model provides a high-stability radio frequency test probe seat structure, which retains the stable installation basis provided by the magnetic attraction type fixation, and further cooperates with a ball. The rolling motion of the ball is smoother than direct sliding friction, which reduces the moving resistance, makes the probe seat more smooth when sliding, improves the adjustment efficiency, and the positioning position after adjustment is also more accurate.
[0006] To achieve the above purpose, the utility model provides the following technical scheme: a high-stability radio frequency test probe seat structure, comprising:
[0007] A probe seat, a probe is installed on the probe seat through a probe arm;
[0008] A ball, a bottom plate is fixed to the bottom of the probe seat, a second metal plate and a first metal plate are arranged on the bottom of the bottom plate and are attached to the installation platform, the ball is arranged in the first metal plate through a first elastic member, and the rolling characteristics of the ball allow the probe seat to adaptively adjust the position in a small range, compensate for the installation deviation of the device under test (DUT) or PCB, ensure the accurate alignment of the probe and the contact point, and reduce the poor contact;
[0009] The strong magnetic plate is arranged in the first metal plate and the second metal plate, the top of the strong magnetic plate is fixed with a lifting rod penetrating through and extending above the second metal plate and fixed below the bottom plate, the outer side of the lifting rod is sleeved with a second elastic element between the bottom plate and the second metal plate, the strong magnetic plate moves downward and is adsorbed with the mounting platform, at the same time, the ball is received in the first metal plate, and stable support of the probe seat structure is realized.
[0010] Further, the first elastic element is a return spring, and the second elastic element is an extrusion spring, the elastic deformation of the return spring can avoid the hard contact of the ball with the mounting platform, and the wear can be effectively reduced, and under the action of the return spring and the extrusion spring, the ball can also be received in the first metal plate, so that the stability of the whole probe seat structure is stronger when the strong magnetic plate adsorbs the mounting platform.
[0011] Further, the bottom of the second metal plate is provided with a gap slot for the up-down movement of the strong magnetic plate, and the first metal plate is provided with a gap hole corresponding to the gap slot, and the gap slot and the gap hole jointly constitute a movement space of the strong magnetic plate for the up-down movement of the strong magnetic plate.
[0012] Further, the top of the second metal plate is provided with a lifting groove in communication with the gap slot and matched with the lifting rod, the lifting groove plays a certain guiding role on the lifting rod, so that the probe seat does not tilt when moving up and down, and the adjustment operation is not affected.
[0013] Further, the first metal plate is provided with a butt joint hole, the top end of the ball is fixed with a buffer rod, the outer periphery of the buffer rod is further fixed with an abutting ring, the return spring is sleeved on the outer periphery of the buffer rod and located between the second metal plate and the abutting ring, the inner periphery wall of the butt joint hole is fixed with a limiting ring abutting with the abutting ring, the tension of the return spring makes the ball tightly adhere to the mounting platform, at this time, the abutting ring and the limiting ring are in the abutting state, and the ball can be used to move the probe seat flexibly.
[0014] Further, the second metal plate is provided with a butt joint groove, and the diameter of the butt joint groove is smaller than that of the butt joint hole, the inner top wall of the butt joint groove is fixed with a guide limiting rod, the guide limiting rod extends into the buffer rod, under the guiding action of the guide limiting rod and the guide groove, the stability of the buffer rod is stronger when moving up and down, and the buffer rod does not tilt.
[0015] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:
[0016] 1. The high-stability radio frequency test probe seat structure, in the initial state, the tension of the reset spring makes the ball tightly adhere to the mounting platform, at this time, the abutting ring and the limiting ring are in the abutting state, the probe seat can be moved flexibly through the ball, the rolling characteristics of the ball allow the probe seat to adaptively adjust the position in a small range, compensate for the installation deviation of the device under test (DUT) or the PCB, ensure the accurate alignment of the probe and the contact, reduce the poor contact, and the rolling movement of the ball is smoother than the direct sliding friction, which can significantly reduce the mechanical wear between the bottom of the probe seat and the mounting platform, prolong the service life of the equipment.
[0017] 2. The high-stability radio frequency test probe seat structure, when the strong magnetic plate is adsorbed with the mounting platform, the tension of the extrusion spring also drives the second metal plate and the first metal plate to move downward, so that the first metal plate tightly adheres to the mounting platform, and the ball is stored in the mounting hole, and only the magnetic adsorption effect of the strong magnetic plate and the mounting platform provides stable support for the probe seat. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 The structure of the utility model is shown in the schematic diagram.
[0019] Figure 2 The structure of the utility model is shown in the schematic diagram.
[0020] Figure 3 The structure of the utility model is shown in the schematic diagram. Figure 2 The structure of the utility model is shown in the schematic diagram.
[0021] In the drawing: 1, probe seat; 2, probe arm; 3, probe; 4, bottom plate; 5, mounting platform; 6, first metal plate; 7, second metal plate; 8, ball; 9, strong magnetic plate; 10, lifting rod; 11, reset spring; 12, extrusion spring; 13, accommodation slot; 14, accommodation hole; 15, lifting groove; 16, butt joint hole; 17, buffer rod; 18, abutting ring; 19, limiting ring; 20, butt joint groove; 21, guide limiting rod. DETAILED DESCRIPTION
[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0023] Please refer to Figures 1-3The high-stability radio frequency test probe seat structure in the embodiment comprises a probe seat 1, a probe 3 is installed on the probe seat 1 through a probe arm 2, the probe arm 2 can accurately control the moving track of the probe 3, and lateral deviation or excessive puncture is avoided, wherein the specific structure of the probe arm 2 and how to control the position of the probe 3 are the prior known technology, and are not described in detail here, a bottom plate 4 is fixed at the bottom of the probe seat 1, a second metal plate 7 and a first metal plate 6 are arranged on the bottom plate 4 in a top-down manner and are attached to a mounting platform 5, a ball 8 is arranged in the first metal plate 6 through a first elastic member, the tension of the first elastic member can make the ball 8 abut on the mounting platform 5, the rolling characteristics of the ball 8 allow the probe seat 1 to adaptively adjust the position in a small range, compensate for the installation deviation of a device under test DUT or a PCB, ensure accurate alignment of the probe 3 and a contact point, reduce poor contact, and the rolling movement of the ball 8 is smoother than direct sliding friction, can significantly reduce the mechanical wear between the bottom of the probe seat 1 and the mounting platform 5, prolong the service life of the equipment, and the second metal plate 7 and the first metal plate 6 are provided with a strong magnetic plate 9, after the probe seat 1 is moved to a suitable position through the ball 8, the strong magnetic plate 9 can be used to be adsorbed with the mounting platform 5, so as to fix the whole probe seat 1, a plurality of lifting rods 10 are fixed at the top of the strong magnetic plate 9 and extend above the second metal plate 7 and are fixed below the bottom plate 4, and a second elastic member is arranged outside the lifting rod 10 and between the bottom plate 4 and the second metal plate 7.
[0024] In use, the tension of the first elastic member makes the ball 8 abut on the mounting platform 5, the probe seat 1 can be moved through the ball 8, after being moved to a suitable position, the probe seat 1 is pressed, the second elastic member is compressed, the strong magnetic plate 9 is lowered and is adsorbed with the mounting platform 5, at the same time, the tension of the second elastic member pushes the second metal plate 7 and the first metal plate 6 to be lowered, so that the first elastic member is compressed, the ball 8 can be accommodated in the first metal plate 6, the stable support of the probe seat 1 is realized, and the position of the probe 3 is fine-tuned through the probe arm 2, so that accurate testing can be realized.
[0025] The first elastic member is a return spring 11, and the second elastic member is a compression spring 12. By setting the first elastic member and the second elastic member as spring elements, the elastic deformation of the spring can avoid the hard contact between the ball 8 and the mounting platform 5, which can effectively reduce the wear. At the same time, under the action of the return spring 11 and the compression spring 12, the ball 8 can also be accommodated in the first metal plate 6, so that when the strong magnetic plate 9 is adsorbed to the mounting platform 5, the stability of the entire probe base 1 is stronger. The setting of the compression spring 12 makes the strong magnetic plate 9 float inside the second metal plate 7 and the first metal plate 6 in the initial state, and does not adsorb to the mounting platform 5. At the same time, the ball 8 can move the probe base 1 more flexibly. After moving to the appropriate position, the probe base 1 is pressed, and under the action of the external force, the compression spring 12 is compressed, the strong magnetic plate 9 is adsorbed to the mounting platform 5, and the adjustment process of the probe base 1 is completed. When subsequent adjustment is needed again, the probe base 1 is pulled up by an external force, so that the strong magnetic plate 9 is no longer adsorbed to the mounting platform 5. At this time, the tension of the compression spring 12 can also reset the strong magnetic plate 9, which is convenient for subsequent operation.
[0026] When the strong magnetic plate 9 moves up and down, the second metal plate 7 and the first metal plate 6 cavity need to be provided with a space for avoiding, in this embodiment, the bottom of the second metal plate 7 is provided with a let-go slot 13 for the up and down movement of the strong magnetic plate 9, and the first metal plate 6 is provided with a let-go hole 14 corresponding to the let-go slot 13. The let-go slot 13 and the let-go hole 14 jointly constitute the movement space of the strong magnetic plate 9 for the up and down movement of the strong magnetic plate 9.
[0027] When the lifting rod 10 moves up and down, the first metal plate 6 also needs to provide a movement space for the up and down movement of the lifting rod 10. In this embodiment, the top of the second metal plate 7 is provided with a lifting groove 15 which is in communication with the let-go slot 13 and is matched with the lifting rod 10, so as to provide the up and down movement of the lifting rod 10. At the same time, the lifting rod 10 moves in the lifting groove 15 matched therewith, and the lifting groove 15 plays a certain guiding role for the lifting rod 10, so that the probe base 1 does not tilt when moving up and down, which affects the adjustment operation.
[0028] In order to make the ball 8 move more stably, as a preferred embodiment, as shown in Figures 2-3 the first metal plate 6 is provided with a butt joint hole 16, the top end of the ball 8 is fixed with a buffer rod 17 located in the butt joint hole 16, the outer periphery of the buffer rod 17 is further fixed with an abutting ring 18, the return spring 11 is sleeved on the outer periphery of the buffer rod 17 and located between the second metal plate 7 and the abutting ring 18, and the inner periphery wall of the butt joint hole 16 is fixed with a limiting ring 19 abutting with the abutting ring 18.
[0029] In the initial state, the tension of the reset spring 11 makes the ball 8 tightly adhere to the mounting platform 5, at this time, the abutting ring 18 and the limiting ring 19 are in the abutting state, the ball 8 can be used to move the probe seat 1 flexibly, when the strong magnetic plate 9 moves downward and is adsorbed with the mounting platform 5, the tension of the compression spring 12 also pushes the second metal plate 7 and the first metal plate 6 to move downward, so that the first metal plate 6 tightly adheres to the mounting platform 5, at this time, the ball 8 is stored in the mounting hole, and the stable support of the probe seat 1 is provided by the magnetic adsorption effect of the strong magnetic plate 9 and the mounting platform 5.
[0030] In the embodiment, the stability of the buffer rod 17 in up-down movement can be further improved, the second metal plate 7 is provided with a butt joint groove 20, the diameter of the butt joint groove 20 is smaller than that of the butt joint hole 16, the inner top wall of the butt joint groove 20 is fixedly provided with a guide limiting rod 21, the guide limiting rod 21 extends into the buffer rod 17, the top of the buffer rod 17 is provided with a guide groove matched with the guide limiting rod 21, and the buffer rod 17 is more stable in up-down movement under the guidance of the guide limiting rod 21 and the guide groove and cannot be inclined.
[0031] In addition, when the whole device is assembled, the probe seat 1 can be fixedly installed with the bottom plate 4 through the first fixing bolt, the first metal plate 6 and the second metal plate 7 are installed through the second fixing bolt, when the first metal plate 6 and the second metal plate 7 are installed, the buffer rod 17 and the ball 8 can be inserted into the butt joint hole 16 of the first metal plate 6, the reset spring 11 is sleeved outside the buffer rod 17, then the guide limiting rod 21 of the second metal plate 7 is inserted into the corresponding buffer rod 17, finally the second metal plate 7 and the first metal plate 6 are installed together through the second fixing bolt, and the whole assembly process is simple and fast.
[0032] In the embodiment, in the initial state, the tension of the reset spring 11 makes the ball 8 tightly adhere to the mounting platform 5, at this time, the abutting ring 18 and the limiting ring 19 are in the abutting state, the ball 8 can be used to move the probe seat 1 flexibly, when the strong magnetic plate 9 moves downward and is adsorbed with the mounting platform 5, the tension of the compression spring 12 also pushes the first metal plate 6 and the second metal plate 7 to move downward, so that the first metal plate 6 tightly adheres to the mounting platform 5, at this time, the ball 8 is stored in the mounting hole, and the stable support of the probe seat 1 is provided by the magnetic adsorption effect of the strong magnetic plate 9 and the mounting platform 5, simultaneously, the adjustment process of the probe seat 1 is completed.
[0033] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.
[0034] While the embodiments of the present application have been shown and described with respect to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. Therefore, the scope of the application should not be limited by the embodiments, but should be defined only in accordance with the following claims and their equivalents.
Claims
1. A high-stability radio frequency test probe station structure, characterized by, The utility model relates to probe seat (1) is installed on the probe arm (2) with probe (3) on the probe seat (1), ball (8), the bottom of probe seat (1) is fixed with bottom plate (4), the bottom of bottom plate (4) is provided with the second metal sheet (7) and first metal sheet (6) that install platform (5) is pasted and is arranged up and down, ball (8) is set up in first metal sheet (6) through first elastic part, Strong magnetic plate (9) is set up in first metal sheet (6) and second metal sheet (7), the top of strong magnetic plate (9) is fixed with the lifting rod (10) one end penetrates and extends to the second metal sheet (7) above and is fixed with bottom plate (4) below, the outside of lifting rod (10) is sleeved with the second elastic part between bottom plate (4) and second metal sheet (7). The first elastic part is reset spring (11), and the second elastic part is extrusion spring (12). The bottom of the second metal sheet (7) is provided with a clearance slot (13) for the up-down movement of the strong magnetic plate (9), and the first metal sheet (6) is provided with a clearance hole (14) corresponding to the clearance slot (13).
2. The high stability RF probe station structure of claim 1, wherein: The top of the second metal sheet (7) is provided with a lifting groove (15) communicating with the clearance slot (13) and matched with the lifting rod (10).
3. The high stability RF probe station structure of claim 1, wherein: The first metal sheet (6) is provided with a butt joint hole (16), the top end of the ball (8) is fixed with a buffer rod (17), the outer periphery of the buffer rod (17) is further fixed with an abutting ring (18), the reset spring (11) is sleeved on the outer periphery of the buffer rod (17) and located between the second metal sheet (7) and the abutting ring (18), and the inner peripheral wall of the butt joint hole (16) is fixed with a limiting ring (19) abutting against the abutting ring (18).
4. The high stability RF probe station structure of claim 1, wherein: The second metal sheet (7) is provided with a butt joint groove (20), and the diameter of the butt joint groove (20) is smaller than the diameter of the butt joint hole (16), the inner top wall of the butt joint groove (20) is fixed with a guide limiting rod (21), and the guide limiting rod (21) extends into the buffer rod (17).
5. The high stability RF probe station structure of claim 2, wherein: 6. The high stability RF probe station structure of claim 5, wherein: