Needle changing device of scanning probe microscope

Abstract

The utility model provides a scanning probe microscope needle changing device, which comprises a rotating seat and a needle changing table, a plurality of equidistantly arranged overturning seats are arranged on the needle changing table, a probe guide support is arranged among the plurality of overturning seats, and mounting seats for connecting probe clamps are arranged on the overturning seats. The beneficial effects of the utility model are that through the gradually-expanded guide chute of the probe slideway, the probe inlet end is larger, the probe inlet channel is extended, the probe can be easily put into the probe inlet, the probe replacement operation is more convenient, and the problems of inaccurate hand shaking and repeated calibration caused by the fact that the probe is clamped by tweezers and directly put into a probe clamp are solved; and even the probe is prevented from falling off and being damaged.

Description

Technical Field

[0001] This utility model mainly relates to the field of microscope technology, specifically to a scanning probe microscope needle changing device. Background Technology

[0002] The basic working principle of a scanning probe microscope is to utilize the interaction between the probe and the atoms and molecules on the sample surface. That is, when the probe approaches the sample surface at the nanoscale, various physical fields of interaction are formed, and the sample surface morphology is obtained by detecting the corresponding physical quantities. A scanning probe microscope mainly consists of five parts: probe, scanner, displacement sensor, controller, detection system and imaging system. In use, different types of probes are used to meet different testing requirements. It is necessary to select the appropriate probe and replace it according to the actual testing situation. The probe also needs to be replaced in time when it is worn after use. Currently, when replacing it, the original probe needs to be removed from the probe holder and the probe to be replaced is placed in the probe holder.

[0003] During the operation of specific embodiments, the inventors discovered the following defects:

[0004] The existing method of changing probes involves lifting the metal spring on the probe holder to create a probe placement groove. A new probe is then carefully picked up from the probe box with tweezers and placed into the groove. During this process, because the probe is tiny and the corresponding probe placement groove is also very small, the tweezers must be held steady to prevent hand tremors. Multiple checks are usually required to accurately place the probe. If the force applied to the tweezers weakens or the tweezers vibrate, the probe may fall off, rendering it unusable.

[0005] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0006] 1. The technical problem to be solved by the utility model:

[0007] This invention provides a scanning probe microscope needle changing device to solve the technical problems existing in the background art.

[0008] 2. Technical Solution:

[0009] To achieve the above objectives, the technical solution provided by this utility model is as follows: a scanning probe microscope needle changing device, including a rotating base, a needle changing platform and a probe clamp, wherein the needle changing platform is provided with a plurality of rotating bases arranged at equal intervals, a probe guide bracket is provided in the middle of the plurality of rotating bases, and a mounting base for connecting the probe clamp is provided on the rotating base.

[0010] Furthermore, the needle changing platform is provided with a recycling groove and multiple mounting grooves, and the bottom of the mounting grooves is inclined.

[0011] Furthermore, a rotating shaft is provided in the mounting groove, and one end of the flip seat is rotatably connected to the rotating shaft.

[0012] Furthermore, a guide groove is provided on one side of the recycling tank near the installation groove, and a recycling outlet is also provided on one side of the recycling tank. The recycling tank, the guide groove, and the recycling outlet are all interconnected.

[0013] Furthermore, the flip base has a plug-in groove, one end of the plug-in groove opening is located away from the probe guide bracket, the mounting base is embedded in the plug-in groove, and the end of the flip base near the guide groove is tilted upward and has a limiting stop strip.

[0014] Furthermore, the probe guide bracket includes a positioning post and a probe slide, and the lower end of the probe slide is provided with a rotating connector that is connected to the positioning post.

[0015] Furthermore, the lower end of the positioning post is fixedly connected to the needle changing platform, and the upper end of the positioning post is rotatably connected to the probe slide through the rotating connector.

[0016] Furthermore, the probe slide is curved, and the probe slide has a guide groove that is gradually expanding.

[0017] 3. Beneficial effects:

[0018] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0019] This utility model is reasonably designed. Through the gradually expanding guide groove of the probe slide, the needle insertion end is larger and the needle insertion channel is extended. The probe can be easily aligned with the needle insertion port and inserted, making the needle replacement operation more convenient. It replaces the bad phenomenon of using tweezers to pick up the probe and put it directly into the probe holder, which leads to inaccurate placement due to hand tremors, multiple calibrations, or even the probe falling and being damaged.

[0020] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a partial structural schematic diagram of the present invention;

[0023] Figure 3This is a partial structural diagram of the present invention from another angle;

[0024] Figure 4 This is a schematic diagram of the probe guide bracket structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the probe slide structure of this utility model.

[0026] Figure label:

[0027] 1. Rotary seat; 2. Needle changing station; 21. Recovery tank; 22. Mounting tank; 23. Guide groove; 24. Recovery outlet; 25. Rotary shaft; 3. Flip seat; 31. Insertion groove; 32. Limiting stop; 4. Probe guide bracket; 41. Positioning post; 42. Probe slide; 421. Guide slide groove; 43. Rotary connector; 5. Mounting seat; 6. Probe clamp. Detailed Implementation

[0028] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0032] See attached document Figure 1-5 A scanning probe microscope needle changing device includes a rotating base 1, a needle changing platform 2 and a probe clip 6. The needle changing platform 2 is provided with a plurality of rotating bases 3 arranged at equal intervals. A probe guide bracket 4 is provided in the middle of the plurality of rotating bases 3. The rotating base 3 is provided with a mounting base 5 for connecting the probe clip 6.

[0033] See attached document Figure 1-3 The needle changing station 2 has a recycling trough 21 and multiple mounting troughs 22. The bottom of the mounting trough 22 is inclined. A rotating shaft 25 is provided in the mounting trough 22. One end of the flipping seat 3 is rotatably connected to the rotating shaft 25. The flipping seat 3 can be flipped to both sides along the rotating shaft 25. A guide groove 23 is provided in the recycling trough 21 near the mounting trough 22. Multiple guide grooves 23 are set corresponding to the mounting trough 22 for recycling old needles. A recycling outlet 24 is also provided on one side of the recycling trough 21. The recycling trough 21, guide groove 23 and recycling outlet 24 are all interconnected. By flipping the flipping seat 3 inward to the needle changing station 2, the worn probes on the probe holder 6 can fall into the recycling trough 21 and be collected through the recycling outlet 24 for disposal.

[0034] See attached document Figure 1-3 The flip base 3 has a plug-in groove 31. One end of the plug-in groove 31 is set away from the probe guide bracket 4. The mounting base 5 is embedded in the plug-in groove 31. The end of the flip base 3 near the guide groove 23 is tilted upward and has a limiting strip 32. After the flip base 3 flips towards the probe station 2, the limiting strip 32 achieves the function of limiting and preventing collision. The mounting base 5 is inserted from the outside of the plug-in groove 31 to the inside. Then the probe clip 6 is inserted into the mounting base 5 from top to bottom and fixed. The mounting base 5 can be replaced according to the specifications of the probe clip 6. The mounting base 5 and the flip base 3 adopt a plug-in structure design, which makes it more convenient to use and disassemble.

[0035] See attached document Figure 4-5The probe guide bracket 4 includes a positioning post 41 and a probe slide 42. The lower end of the probe slide 42 is provided with a rotating connector 43 connected to the positioning post 41. The lower end of the positioning post 41 is fixedly connected to the needle changing station 2. The upper end of the positioning post 41 is rotatably connected to the probe slide 42 via the rotating connector 43. The probe slide 42 is inclined vertically, with a larger opening at the upward end and a smaller opening at the downward end near the mounting base 5, which aligns with the groove on the probe holder 6 for placing the probe. The probe slide 42 is curved. In this embodiment... The probe slide 42 is made of plastic to prevent scratches or bumps to the probe. The probe slide 42 has a guide groove 421 inside, which is gradually widening. The end of the probe slide 42 near the positioning post 41 is the needle inlet, and the end near the mounting base 5 is the needle outlet. The guide groove 421 inside the probe slide 42 gradually widens from the needle outlet to the needle inlet. The width of the needle inlet is greater than the width of the needle outlet. The needle inlet is also chamfered. The enlarged needle inlet facilitates easy insertion of the probe without the need for multiple calibrations.

[0036] In this embodiment, the steps are as follows:

[0037] Needle removal: At this time, the probe guide bracket 4 corresponding to the mounting base 5 tilts upward. Specifically, the end of the probe slide 42 away from the mounting base 5 is pressed downward. Using the lever principle, it moves downward with the positioning post 41 as the fulcrum. The other end near the mounting base 5 tilts upward, leaving space for the flipping base 3. The probe clip 6 is inserted into the upper end of the mounting base 5 from top to bottom. The needle loading groove of the probe clip 6 faces the probe guide bracket 4. The flipping base 3 and the mounting base 5 are flipped towards the inside of the needle changing table 2 through the rotating shaft 25 until the limiting stop 32 on the flipping base 3 abuts against the surface of the needle changing table 2. Then, the metal spring on the probe clip 6 is pressed. The worn probe falls out of the probe clip 6 with inertia and falls into the recycling groove 21 on the probe table 2. The replaced probes accumulated in the recycling groove 21 can be collected and discarded through the recycling outlet 24.

[0038] Needle replacement: Reset the flip base 3 together with the mounting base 5. After resetting, the flip base 3 is tilted. The tilt angle of the probe clip 6 installed on its upper end is the same as the tilt angle of the probe slide 42. The probe slide 42 is reset, and the needle outlet of the probe slide 42 is aligned with the mounting base 5. After installation, the probe clip 6 is placed in the slot. Use tweezers to take out the new probe from the probe box and insert it from the needle inlet at the upper end of the probe slide 42. The probe slides down the probe slide 42. Press down the metal spring on the probe clip 6. The probe slides down to the slot of the probe clip 6. Release the metal spring. The probe installation is complete.

[0039] In summary, during use, by extending the probe slide and using a gradually expanding guide groove, the insertion end of the probe is made larger, making the operation more convenient. This replaces the previous method of using tweezers to pick up the probe and directly placing it into the probe holder, which could lead to inaccurate placement due to hand tremors, or even causing the probe to fall and be damaged. Furthermore, replacing probes is done in the same collection, ensuring a clean operating table and preventing damaged probes from being mixed with new ones.

[0040] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A scanning probe microscope probe changing device, comprising a rotating base (1), a probe changing stage (2), and a probe clamp (6), characterized in that: The needle changing station (2) is provided with multiple rotating seats (3) arranged at equal intervals. A probe guide bracket (4) is provided between the multiple rotating seats (3). The rotating seats (3) are provided with a mounting seat (5) for connecting the probe clip (6).

2. The scanning probe microscope stylus changing device according to claim 1, characterized in that: The needle changing station (2) is provided with a recycling groove (21) and multiple mounting grooves (22), and the bottom of the mounting grooves (22) is inclined.

3. The scanning probe microscope stylus changing device according to claim 2, characterized in that: The mounting groove (22) is provided with a rotating shaft (25), and one end of the flip seat (3) is rotatably connected to the rotating shaft (25).

4. The scanning probe microscope stylus changing device according to claim 2, characterized in that: A guide groove (23) is provided on one side of the recycling tank (21) near the installation groove (22), and a recycling outlet (24) is also provided on one side of the recycling tank (21). The recycling tank (21), the guide groove (23) and the recycling outlet (24) are all interconnected.

5. A scanning probe microscope stylus changing device according to claim 4, characterized in that: The flip seat (3) has a plug groove (31) with one end of the plug groove (31) being away from the probe guide bracket (4). The mounting seat (5) is embedded in the plug groove (31). The end of the flip seat (3) near the guide groove (23) is tilted upward and has a limiting stop (32).

6. The scanning probe microscope stylus changing device according to claim 1, characterized in that: The probe guide bracket (4) includes a positioning post (41) and a probe slide (42), and the lower end of the probe slide (42) is provided with a rotating connector (43) connected to the positioning post (41).

7. A scanning probe microscope stylus changing device according to claim 6, characterized in that: The lower end of the positioning post (41) is fixedly connected to the needle changing table (2), and the upper end of the positioning post (41) is rotatably connected to the probe slide (42) through the rotating connector (43).

8. A scanning probe microscope stylus changing device according to claim 7, characterized in that: The probe slide (42) is curved, and the probe slide (42) has a guide groove (421) inside, which is gradually expanding.

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