A finished product placement rack for scanning a sample in an electron microscope

Abstract

The utility model provides a kind of finished product placing rack of electron microscope scanning sample, belong to electron microscope sample preparation technical field, including base, the top of base is rotatably provided with sample holder, the outer wall of sample holder is evenly provided with clamping groove, the end of clamping groove is rotatably connected with hoop, the top of sample holder is fixedly connected with stud, the top of sample holder is provided with protective core plate, the bottom of protective core plate is evenly provided with core cavity, the inner chamber of protective core plate is rotatably provided with the rotating cap of stud screw connection, and rotating cap is provided with rotating stop member between protective core plate, after sample is fixed in clamping groove in sequence, continue to twist rotating cap, so as to cover core cavity in the embedded core outside each sample, and then the embedded core is protected, in the process of moving protective core plate, rotating cap is prevented from reverse rotation by rotating stop member, the movement in the same direction is guaranteed, reverse movement is prevented, so as to guarantee the sealing between protective core plate and sample holder.

Description

Technical Field

[0001] This utility model relates to the field of electron microscopy sample preparation technology, specifically a finished product placement rack for scanning samples with an electron microscope. Background Technology

[0002] The electron microscope, or simply electron microscope, has become an indispensable tool in modern science and technology after more than fifty years of development. An electron microscope consists of three main parts: the microscope tube, the vacuum unit, and the power supply cabinet. The electron lens, used to focus electrons, is the most important component of the electron microscope tube. Magnetic lenses are generally used, but electrostatic lenses are sometimes employed.

[0003] The following problems were found in the related technology: the sample preparation process for electron microscopy requires embedding the core into the bottom of the insert through heat fusion, and then placing the sample into the electron microscope. After sample preparation, the sample needs to be placed in order to prepare the next sample. During the placement process, special attention needs to be paid to the position of the core to avoid damage to the core, which would affect the electron microscopy detection results. In response, we have proposed a finished product placement rack for scanning electron microscope samples.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background section of this application, and therefore may include prior art information that does not constitute prior art information known to those skilled in the art. Utility Model Content

[0005] This utility model aims to solve at least one of the technical problems existing in the prior art or related technologies. To address the problem of electron microscope sample storage in the prior art, this utility model provides a finished sample storage rack for electron microscope scanning, employing multiple sample storage points combined with a core-embedded protective structure to ensure sample quality. The specific technical solution is as follows:

[0006] A finished sample placement rack for scanning electron microscopes includes a base, a sample holder rotatably mounted on the top of the base, slots evenly distributed circumferentially on the outer wall of the sample holder, clamps rotatably connected to the ends of the slots, a stud fixed to the top of the sample holder, a core protector plate above the sample holder, core holder cavities evenly distributed at the bottom of the core protector plate, a rotating cap threadedly connected to the studs rotatably mounted in the inner cavity of the core protector plate, and a rotation anti-reverse component between the rotating cap and the core protector plate.

[0007] In the above technical solution, the rotation anti-reverse component includes an anti-reverse disc sleeved on the outer wall of the rotating cap, and a one-way locking member rotatably connected to the top of the core plate, which engages with the circumferential anti-reverse groove of the anti-reverse disc. The one-way locking member is connected to the core plate through an elastic member.

[0008] The bottom of the sample holder is provided with a locking wing, and the top of the base is provided with an elastic reset snap-fit ​​component for locking the locking wing.

[0009] The elastic reset latching component includes a support fixed to the top of the base, a latching hole is provided on the locking wing, a latching post is embedded in the top of the support and engages with the latching hole, and the latching post is connected to the bottom of the inner wall of the support by a spring.

[0010] The top of the sample holder is uniformly fixed with elastic blocks, and the core plate is uniformly provided with positioning holes that engage with the elastic blocks. The top of the elastic blocks is provided with deformation grooves.

[0011] The clamp and the slot are fixed together by bolts.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the finished product placement rack for electron microscope scanning samples:

[0013] 1. After fixing the samples into the slots one by one, turn the rotating cap on the outer wall of the stud. As the rotating cap rotates, it moves the core protection plate towards the sample holder. At this time, the elastic block corresponds to the positioning hole. After the positioning hole is engaged with the outer side of the elastic block, continue to turn the rotating cap, thereby covering the core of each sample with the core cavity, thus protecting the core.

[0014] Second, during the movement of the core protector plate, the rotating anti-reverse component prevents the rotating cap from rotating in the opposite direction, ensuring movement in the same direction and preventing reverse movement, thereby ensuring the sealing between the core protector plate and the sample holder.

[0015] 3. After the sample is placed, rotate the locking wing frame above the elastic reset latching component and then lock it to prevent rotation during movement, thus ensuring the stability of the transfer process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a finished product placement rack for scanning samples with an electron microscope according to the present invention;

[0017] Figure 2 This is an exploded view of the structure of a finished sample placement rack for scanning electron microscopes according to the present invention. Figure I ;

[0018] Figure 3 This is an exploded view of the structure of a finished sample placement rack for scanning electron microscopes according to the present invention. Figure II ;

[0019] Figure 4 This is a schematic diagram of the structure of the core protection plate and the anti-reverse disc of this utility model. Figure I ;

[0020] Figure 5 This is a schematic diagram of the structure of the core protection plate and the anti-reverse disc of this utility model. Figure II ;

[0021] Figure 6 This is a structural cross-sectional view of the support portion of this utility model;

[0022] Figure 7 for Figure 2 A magnified view of part A;

[0023] in, Figures 1 to 7 The correspondence between the reference numerals and component names in the attached drawings is as follows: 1-base, 2-sample holder, 3-slot, 4-clamp, 5-core protector, 6-protective cover, 7-anti-reverse plate, 8-stud, 9-paddle, 10-connecting seat, 11-elastic block, 12-positioning hole, 13-, 14-rotating cap, 15-support, 16-stud, 17-locking wing, 18-support column, 19-sealing ring, 20-core cavity, 21-moving shaft, 22-one-way clamp, 23-elastic element, 24-dating seat, 25-ball bearing, 26-moving groove, 27-slide groove, 28-spring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The following are specific implementation cases and appendices. Figure 1-7 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0026] A sample holder for scanning electron microscopes includes a base 1, a sample holder 2 rotatably mounted on the top of the base 1, and slots 3 evenly distributed around the outer wall of the sample holder 2. A support column 18 is vertically fixed at the center of the base 1, and a rotating seat is fitted onto the top of the outer wall of the support column 18, rotatably connected to the top of the support column 18. The sample holder 2 is fixed to the top of the rotating seat, allowing the sample holder 2 to rotate with the rotating seat. A clamp 4 is rotatably connected to the end of each slot 3. Semi-circular slots 3 are sequentially formed on the outer wall of the sample holder 2, and each slot 3 is rotatably connected to a clamp 4 via a pivot.

[0027] After placing the sample securely on the inner wall of the slot 3, rotate the clamp 4 and fix the connecting seat 10 at the adjacent ends of the clamp 4 and the slot 3. Then, pass the bolt through the two connecting seats and lock them with nuts to fix the sample in the cavity formed by the slot 3 and the clamp 4.

[0028] A stud 8 is fixed to the top of the sample holder 2, and the stud 8 is vertically fixed at the top center of the sample holder 2. A core protection plate 5 is provided above the sample holder 2. Core placement cavities 20 are evenly opened at the bottom of the core protection plate 5. A rotating cap 14, which is threadedly connected to the stud 8, is rotatably installed in the inner cavity of the core protection plate 5. A rotation anti-reverse component is provided between the rotating cap 14 and the core protection plate 5. The rotating cap 14 rotates at the center of the core protection plate 5. A threaded hole for threaded connection with the stud 8 is opened at the bottom of the rotating cap 14. Four core placement cavities 20 corresponding to the slots 3 are opened at the bottom of the core protection plate 5.

[0029] After the samples are fixed in the slot 3 in sequence, the rotating cap 14 is turned on the outer wall of the stud 8. As the rotating cap 14 rotates, the core protection plate 5 moves towards the sample holder 2. At this time, the elastic block 11 corresponds to the positioning hole 12. After the positioning hole 12 is inserted into the outside of the elastic block 12, the rotating cap 14 is turned again, thereby covering the core of each sample with the core cavity 20, thus protecting the core.

[0030] During the movement of the core protector plate 5, the rotating anti-reverse component prevents the rotating cap 14 from rotating in the opposite direction, ensuring movement in the same direction and preventing reverse movement, thereby ensuring the sealing between the core protector plate 5 and the sample holder 2.

[0031] The rotary anti-reverse component includes an anti-reverse disc 7 sleeved on the outer wall of the rotary cap 14. A one-way locking member 22, which engages with the circumferential anti-reverse groove of the anti-reverse disc 7, is rotatably connected to the top of the core plate 5. The one-way locking member 22 and the core plate 5 are connected by an elastic member 23. The anti-reverse disc 7 is fixedly sleeved on the outside of the rotary cap 14 through a central mounting hole. Connecting anti-reverse grooves are sequentially formed along the same direction on the outer wall of the anti-reverse disc 7.

[0032] A movable shaft 21 is rotatably installed at the top edge of the core protection plate 5. A one-way clamp 22 is fixedly sleeved on the outside of the movable shaft 21 through a mounting hole at one end, so that the one-way clamp 22 rotates at the top of the core protection plate 5. The elastic element 23 can be a compression spring. One end of the elastic element 23 is fixedly installed at the top edge of the core protection plate 5, and the other end of the elastic element 23 is fixed on the outer wall of the one-way clamp 22. Through the elastic force of the elastic element 23, the one-way clamp 22 is in a position that engages with the circumferential anti-reverse groove of the anti-reverse disc 7. Each anti-reverse groove of the anti-reverse disc 7 has an arc edge, so that the one-way clamp 22 slides along the arc edge through each anti-reverse groove.

[0033] During the process of rotating the cap 14 to bring the core plate 5 into contact with the sample holder 2, the anti-reverse plate 7 rotates with the cap 14. During the rotation of the cap 14, the anti-reverse groove of the anti-reverse plate 7 slides past the one-way clamp 22 in sequence. When the rotation is reversed by mistake, the anti-reverse groove of the anti-reverse plate 7 is engaged with the one-way clamp 22 and cannot rotate in the reverse direction.

[0034] It is worth noting that the bottom of the sample holder 2 is provided with a locking wing 17, and the top of the base 1 is provided with an elastic reset snap-fit ​​component for locking the locking wing 17. The locking wing 17, which is attached and fixed to the bottom of the sample holder 2, is provided between two adjacent clamps 4. During the sample loading process, the sample holder 2 is rotated.

[0035] After placing the samples into the slot 3 in sequence, rotate the sample holder 2 to load the next sample into the sample holder 2. After the samples are placed, rotate the locking wing 17 above the elastic reset locking member and lock it to prevent rotation during the movement, thus ensuring the stability of the transfer process.

[0036] Furthermore, the elastic reset latching component includes a support 15 fixed to the top of the base 1, a latching hole on the locking wing 17, and a latching post 16 embedded in the top of the support 15, which engages with the latching hole. The latching post 16 is connected to the bottom of the inner wall of the support 15 by a spring 28. The support 15 is fixed to the top of the base 1, and a slot is formed in the top of the support 15, allowing the latching post 16 to slide and extend within the inner wall of the slot. The two ends of the spring 28 are fixed to the bottom of the inner wall of the support 15 and the bottom of the latching post 16, respectively.

[0037] When locking the mounting frame 2, move the locking hole on the locking wing frame 17 to the corresponding position of the locking post 16, and then press down on the locking post 16. At this time, the locking post 16 enters the support 15 and the spring 28 is compressed and generates elastic force. Then move the locking hole on the locking wing frame 17 above the locking post 16. At this time, the elastic force of the spring 28 causes the locking post 16 to engage with the locking hole on the locking wing frame 17, thereby locking the locking wing frame 17.

[0038] In addition, elastic blocks 11 are uniformly fixed to the top of the sample holder 2, and positioning holes 12 that engage with the elastic blocks 11 are uniformly opened on the core plate 5. The top of the elastic blocks 11 is provided with a deformation groove. The elastic blocks 11 made of rubber 11 deform and move relative to each other through the central deformation groove. After the sample is placed on the sample holder 2, the core plate 5 drives the positioning holes 12 to engage with each elastic block 11, thereby locking the position of the core plate 5.

[0039] Furthermore, the clamp 4 and the slot 3 are secured together by bolts. The bolts pass through two connecting seats at the adjacent ends of the clamp 4 and the slot 3 for fixation, making the sample loading process more convenient.

[0040] A protective cover 6 is fixedly installed on the top of the core plate 5. A through hole is opened in the middle of the protective cover 6 to fit over the outside of the rotating cap 14. The protective cover 6 covers the outside of the anti-reverse disc 7. A lever 9 is fixedly installed on the circumferential outer wall of the one-way clamp 22. A relief groove 13 is opened on the outer wall of the protective cover 6. The lever 9 protrudes out through the relief groove 13. By lever 9, the one-way clamp 22 can be rotated, thereby allowing reverse rotation. The core plate 5 can then be disassembled.

[0041] A through hole is made at the center of the core plate 5, and a groove 27 is made around the inner wall of the through hole. A mating seat 24 is fitted onto the outer wall of the rotating cap 14, and a series of movable grooves 26 are made around the outer wall of the mating seat 24. A ball bearing 25 is movably embedded in the movable cavity formed by each movable groove 26 and the groove 27. The stability of the rotating cap 14 during rotation is ensured by setting a series of ball bearings 25 around the core plate 5.

[0042] An elastic sealing ring 19 is fixedly installed at the bottom edge of each core cavity 20. The elastic sealing ring 19 ensures the sealing of the bottom core of the sample after it is placed in the core cavity 20, thereby protecting the bottom core of the sample.

[0043] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] Furthermore, the terms "first," "second," "third," and "fourth" 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," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A finished sample holder for scanning electron microscopes, comprising a base (1), characterized in that: A sample holder (2) is rotatably mounted on the top of the base (1). The outer wall of the sample holder (2) is evenly provided with slots (3). The end of the slots (3) is rotatably connected with a clamp (4). A stud (8) is fixedly connected to the top of the sample holder (2). A core protection plate (5) is provided above the sample holder (2). The bottom of the core protection plate (5) is evenly provided with a core placement cavity (20). A rotating cap (14) threadedly connected to the stud (8) is rotatably mounted in the inner cavity of the core protection plate (5). A rotation anti-reverse component is provided between the rotating cap (14) and the core protection plate (5).

2. The finished product placement rack for scanning electron microscope samples according to claim 1, characterized in that: The rotating anti-reverse component includes an anti-reverse disc (7) sleeved on the outer wall of the rotating cap (14), and a one-way locking member (22) rotatably connected to the top of the core plate (5) and engaging with the circumferential anti-reverse groove of the anti-reverse disc (7). The one-way locking member (22) and the core plate (5) are connected by an elastic member (23).

3. The finished product placement rack for scanning electron microscope samples according to claim 1, characterized in that: The bottom of the sample holder (2) is provided with a locking wing (17), and the top of the base (1) is provided with an elastic reset snap-fit ​​member for locking the locking wing (17).

4. The finished product placement rack for scanning electron microscope samples according to claim 3, characterized in that: The elastic reset snap-fit ​​component includes a support (15) fixed to the top of the base (1), a snap-fit ​​hole is provided on the locking wing frame (17), a snap-fit ​​post (16) is embedded in the top of the support (15) and engages with the snap-fit ​​hole, and the snap-fit ​​post (16) is connected to the bottom of the inner wall of the support (15) by a spring (28).

5. The finished product placement rack for scanning electron microscope samples according to claim 1, characterized in that: The top of the sample holder (2) is uniformly fixed with elastic blocks (11), and the core plate (5) is uniformly provided with positioning holes (12) that engage with the elastic blocks (11). The top of the elastic blocks (11) is provided with deformation grooves.

6. The finished product placement rack for scanning electron microscope samples according to claim 1, characterized in that: The clamp (4) and the slot (3) are fixed together by bolts.

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