A sample holder for protecting sensitive samples

Abstract

An embodiment of the present application provides a sample rod for protecting sensitive samples, the sample rod comprising: a housing, a transmission member, a drive device, a sample carrier, and a first connecting assembly; one end of the transmission member is fixedly connected to the sample carrier, and the other end is connected to the drive device; the sample carrier is used to carry the sample; the drive device can drive the transmission member to move in a first direction, so that the sample carrier extends out of the housing or retracts into the housing; a moving member is provided at one end of the transmission member away from the sample carrier, the drive device comprises a rotating member with a spiral groove, and a guide member, the guide member is sleeved on the outside of the moving member, and one end of the guide member is fixedly connected to the housing through the first connecting assembly; the rotating member is sleeved on the guide member, and the guide member is provided with a guide hole extending in the first direction, the moving member extends out of the guide hole through the guide hole, at least a portion of the moving member is located in the spiral groove of the rotating member, and the rotating member is rotated so that the side wall of the rotating groove pushes the moving member to move in the first direction.

Description

Technical Field

[0001] The present application relates to the technical field of electron microscope accessories, and in particular to a sample rod for protecting sensitive samples. Background Art

[0002] The transmission electron microscope (TEM) is a versatile scientific instrument that uses an electron beam to image the microscopic morphology of a sample. With the application and development of new technologies, such as spherical aberration correction, TEMs are now capable of imaging samples at the atomic scale. Consequently, TEMs are widely used in a variety of disciplines, including physics, chemistry, biology, and materials science.

[0003] The sample holder is an accessory used in transmission electron microscopes, used to transport samples into the microscope. The evolution of the sample holder has greatly expanded the application range of transmission electron microscopes. For example, by applying electric fields, tension, atmosphere, and other conditions to the sample at the tip of the sample holder, the changes in the sample under these conditions can be observed.

[0004] In the prior art, the sample rod always exposes the sample to the outside, which may cause the sample to spill, get contaminated by dust, etc. The structure for driving the sample rod to extend and retract is relatively complex, and the driving process is unstable. Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide a sample holder for protecting sensitive samples, simplifying the structure of the sample holder and making the movement of the sample holder more stable. The specific technical solution is as follows:

[0006] An embodiment of the present application provides a sample rod for protecting sensitive samples, the sample rod comprising: a housing, a transmission member, a drive device, a sample carrier, and a first connecting assembly; the transmission member is arranged in the housing, one end of the transmission member is fixedly connected to the sample carrier, and the other end is connected to the drive device; the sample carrier is used to carry samples; the drive device can drive the transmission member to move along a first direction so that the sample carrier extends out of the housing or retracts into the housing; a moving member is provided at one end of the transmission member away from the sample carrier, the drive device comprises a rotating member with a spiral groove and a guide member, the guide member is sleeved on the outside of the moving member, and one end of the guide member is fixedly connected to the housing through the first connecting assembly, and the guide member is provided with a guide hole extending along the first direction; the rotating member is sleeved on the guide member, the moving member extends out of the guide hole through the guide hole, and at least a portion of the moving member is located in the spiral groove of the rotating member, and the rotating member is rotated so that the side wall of the spiral groove pushes the moving member to move along the first direction.

[0007] In some embodiments, the first connecting assembly includes a connecting sleeve and a first connecting flange, wherein the first connecting flange is fixedly connected to the end of the housing, and the first connecting flange is also fixedly connected to the connecting sleeve.

[0008] In some embodiments, the first connecting flange includes a chassis, a first frustum provided on the chassis, and a second frustum provided on a side of the first frustum away from the chassis, and the side wall of the first frustum is connected to the side wall of the connecting sleeve through a first connecting member.

[0009] In some embodiments, the side of the chassis away from the rotating part is recessed inward to form a receiving groove, and the length of the receiving groove along the first direction is greater than the length of the chassis and the first frustum, and less than the length of the first connecting flange; the end of the shell away from the sample carrier is placed in the receiving groove; and the end face of the second frustum is connected to the end of the shell away from the sample carrier through a second connecting member.

[0010] In some embodiments, the connecting sleeve includes a cylindrical wall and a top wall provided at a first end of the cylindrical wall, the first end being an end of the cylindrical wall close to the rotating member, an opening being provided on the top wall for the transmission member to pass through, the top wall being fixedly connected to the guide member through a third connecting member, and the second end face of the cylindrical wall abutting against the end face of the chassis.

[0011] In some embodiments, the rotating member includes a rotating sleeve and a connecting disc connected to the rotating sleeve, and the spiral groove is provided on the side wall of the rotating sleeve; the sample rod also includes an embossed sleeve, which is sleeved on the outside of the rotating sleeve, and one end of the embossed sleeve is fixedly connected to the connecting disc, and the other end is connected to the connecting sleeve.

[0012] In some embodiments, a square block is provided at one end of the transmission member away from the sample carrier, a groove is provided on the square block, and the movable member is provided in the groove; the guide member is a guide column, a accommodating cavity extending along a first direction is provided in the guide column, and the square block is located in the accommodating cavity.

[0013] In some embodiments, the housing includes a shell, an insulating ring, a second connecting component, and a protective cover; the protective cover is connected to the insulating ring through the second connecting component, and the insulating ring is connected to the outer end surface of the shell; the protective cover is provided with a through hole extending along a first direction, and the through hole is adapted to the shape of the sample carrier.

[0014] In some embodiments, the sample carrier is plate-shaped, the transmission member is a transmission rod, and a slot is provided at one end of the transmission rod close to the sample carrier, and one end of the sample carrier is placed in the slot.

[0015] In some embodiments, the sample rod further includes a first seal and a second seal, the first seal being disposed inside the outer shell; the sample carrier having a carrier portion, the second seal being disposed on the sample carrier and located on the outside of the carrier portion; when the sample carrier is retracted into the outer shell, the first seal cooperates with the second seal to isolate the carrier portion from the outside.

[0016] Beneficial effects of the embodiments of the present application:

[0017] The sample holder for protecting sensitive samples provided in an embodiment of the present application has a transmission member fixedly connected to one end thereof with a movable member, which is placed in a guide hole of a guide member and a spiral groove of a rotating member. By rotating the rotating member, the sidewall of the spiral groove pushes the transmission member, allowing the transmission member to move in a first direction within the guide hole, thereby enabling a sample carrier connected to the transmission member to extend out of or retract into a housing. When a sample needs to be loaded onto the sample carrier, the sample carrier is extended out of the housing. When it is necessary to transfer the sample in the sample carrier, the transmission member is moved by a driving device to retract the sample carrier into the housing to prevent contamination of the sample. By providing a rotating member with a spiral groove, the rotation of the rotating member can be converted into linear movement of the transmission member, without the need for an electric drive device, resulting in a simple structure and greater stability and reliability.

[0018] Of course, it is not necessary to achieve all the advantages described above at the same time when implementing any product or method of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other embodiments can also be obtained based on these drawings.

[0020] Figure 1 The appearance diagram of the sample rod provided in the embodiment of the present application;

[0021] Figure 2 for Figure 1 Exploded view of the sample rod;

[0022] Figure 3 A schematic diagram of a square block in a sample rod provided in an embodiment of the present application;

[0023] Figure 4 A schematic diagram of the cooperation between the square block and the moving part in the sample holder provided in an embodiment of the present application;

[0024] Figure 5 A schematic diagram of a guide member in a sample holder provided in an embodiment of the present application;

[0025] Figure 6 A schematic diagram of a rotating part in a sample holder provided in an embodiment of the present application;

[0026] Figure 7 for Figure 1 A cross-sectional view of the driving device in the sample holder shown;

[0027] Figure 8 for Figure 1 An exploded view of the driving device and the first connecting assembly in the sample holder shown;

[0028] Figure 9 for Figure 1 A schematic diagram of the combination of the driving device and the first connecting component in the sample holder shown;

[0029] Figure 10 for Figure 1 A cross-sectional view of the rod head portion of the sample rod shown;

[0030] Figure 11 for Figure 1 Schematic diagram of the sample holder with the sample rod shown retracted;

[0031] Figure 12 for Figure 1 A schematic diagram of the sample holder extending out of the sample carrier is shown;

[0032] Figure 13 A schematic diagram of the connection between the transmission member and the sample carrier in the sample holder provided in an embodiment of the present application;

[0033] Figure 14 for Figure 1 a cross-sectional view of the sample holder with the sample rod shown retracted;

[0034] Figure 15 for Figure 1 A cross-sectional view of the sample holder is shown extending out of the sample carrier.

[0035] Reference numerals:

[0036] Sample rod 1;

[0037] Housing 10; housing 11; chamfer 110; first section 111; second section 112; insulating ring 12; second connecting assembly 13; second connecting flange 131; fourth connecting member 132; connecting plate 133; protective cover 14; through hole 15; receiving groove 16; matching switch 17;

[0038] Transmission member 20, square block 201; groove 2010; moving member 21; slot 22;

[0039] Driving device 30, rotating member 31; spiral groove 311; rotating sleeve 312; connecting disc 313; guide member 32; third connecting member 3201; guide hole 321; accommodating cavity 322; annular boss 323;

[0040] Sample carrier 40; carrier portion 41; pressing sheet 42;

[0041] First connecting assembly 50; connecting sleeve 51; cylinder wall 511; top wall 512; sealing ring accommodating groove 5120; first connecting member 513; first connecting flange 52; chassis 521; first frustum 522; second frustum 523; second connecting member 5231; embossed sleeve 60; first sealing member 71; second sealing member 72; fourth sealing member 74; fifth sealing member 75; positioning block 80; end cover 82; first direction X. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field based on this application are within the scope of protection of this application.

[0043] In order to simplify the structure of the sample holder and make the driving process of the sample holder more stable, the embodiment of the present application provides a sample holder 1 for protecting sensitive samples, such as Figure 1 and Figure 2 As shown, the sample rod 1 includes: a shell 10, a transmission member 20, a driving device 30, a sample carrier 40, and a first connecting component 50; the transmission member 20 is partially arranged in the shell 10, one end of the transmission member 20 is fixedly connected to the sample carrier 40, and the other end is connected to the driving device 30; the sample carrier 40 is used to carry the sample; the driving device 30 can drive the transmission member 20 to move back and forth along the first direction X, so that the sample carrier 40 extends out of the shell 10 or retracts into the shell 10; a moving member 21 is provided at one end of the transmission member 20 away from the sample carrier 40, and the driving device 30 includes a rotating member 31 with a spiral groove 311 and a guide member 32, the guide member 32 is sleeved on the outside of the moving member 21, and one end of the guide member 32 is fixedly connected to the shell 10 through the first connecting component 50, as shown Figures 3 to 6 As shown, the guide member 32 is provided with a guide hole 321 extending along the first direction X; the rotating member 31 is sleeved on the guide member 32, and the rotating member 31 is rotatably connected to the guide member 32, the moving member 21 extends out of the guide hole 321 through the guide hole 321, and at least a portion of the moving member 21 is located in the spiral groove 311 of the rotating member 31. By rotating the rotating member 31, the side wall of the spiral groove 311 pushes the moving member 21 to move along the first direction X.

[0044] In the embodiment of the present application, a moving member 21 is fixedly connected to one end of the transmission member 20. The moving member 21 is positioned within a guide hole 321 of the guide member 32 and a spiral groove 311 of the rotating member 31. Since the guide hole 321 of the guide member 32 extends along a first direction X, the guide hole 321 can restrict the moving member 21, thereby allowing the moving member 21 to move only along the first direction X within the guide hole 321 and not deflect in other directions. This further ensures a smoother and more precise movement of the moving member 21 along the first direction X. By rotating the rotating member 31, the spiral characteristics of the spiral groove 311 enable the sidewalls of the spiral groove 311 to push the moving member 21, thereby enabling the moving member 21 to move along the first direction X within the guide hole 321. The movement of the moving member 21 along the first direction X causes the transmission member 20 to move along the first direction X, thereby enabling the sample carrier 40 connected to the transmission member 20 to extend from or retract into the housing 10. When a sample needs to be loaded onto the sample carrier 40, the sample carrier 40 is extended out of the housing 10 to facilitate sample installation or removal. When the sample in the sample carrier 40 needs to be transferred, the driving device 30 moves the transmission member 20 to retract the sample carrier 40 into the housing 10. The housing 10 protects the sample and prevents contamination. By providing a rotating member 31 with a spiral groove 311, the rotation of the rotating member 31 can be converted into linear movement of the transmission member 20 through a stable and reliable linear propulsion method. Without the need for an electric driving device 30, the operator can simply manually rotate the rotating member 31 to achieve stable linear propulsion of the sample carrier 40 along the first direction X by the transmission member 20. This makes the structure more stable and reliable, and can also better protect sensitive samples.

[0045] It should be noted that the first direction X is the axial direction of the housing 10 .

[0046] Specifically, a matching switch 17 may be further provided on the housing 10. When the sample holder 1 is used in conjunction with other devices, the matching switch 17 may serve as a switch for the other devices, for example, as a trigger switch for an electron microscope.

[0047] In some embodiments of the present application, the first connecting assembly 50 includes a connecting sleeve 51 and a first connecting flange 52 . The first connecting flange 52 is fixedly connected to the end of the housing 10 , and the first connecting flange 52 is also fixedly connected to the connecting sleeve 51 .

[0048] In the embodiment of this application, Figure 7 and Figure 8 As shown, the connecting sleeve 51 is sleeved on the outside of the transmission member 20 to protect the transmission member 20. The connecting sleeve 51 is fixedly connected to the housing 10 through the first connecting flange 52, making disassembly more convenient.

[0049] Further, such as Figure 9 As shown, the sample holder 1 also includes a positioning block 80. When the sample holder 1 is used in conjunction with other equipment, such as a projection electron microscope, the positioning block 80 is used to block the light path of the other equipment. Specifically, the positioning block 80 is located on the side of the first connecting flange 52 away from the connecting sleeve 51.

[0050] In some embodiments of the present application, Figure 2 、 Figure 7 and Figure 8 As shown, the first connecting flange 52 includes a chassis 521, a first frustum 522 arranged on the chassis 521, and a second frustum 523 arranged on the side of the first frustum 522 away from the chassis 521. The side wall of the first frustum 522 is connected to the side wall of the connecting sleeve 51 through a first connecting member 513.

[0051] In the embodiment of this application, Figure 7 and Figure 8 As shown, the side of the chassis 521 of the first connecting flange 52 close to the connecting sleeve 51 is in contact with the connecting sleeve 51. When the first connecting flange 52 is connected to the connecting sleeve 51, the first cone 522 and the second cone 523 are located in the inner cavity of the connecting sleeve 51, and the side wall of the first cone 522 is connected to the side wall of the connecting sleeve 51 through the first connecting member 513, thereby realizing the detachable connection between the first connecting flange 52 and the connecting sleeve 51; the end face of the second cone 523 close to the guide member 32 is connected to the end of the housing 10 away from the sample carrier 40 through the second connecting member 5231.

[0052] By cleverly arranging the structure of the first connecting flange 52 , the first connecting flange 52 can simultaneously realize the connection between the housing 10 and the connecting sleeve 51 , saving space and greatly simplifying the structure of the sample rod 1 .

[0053] Specifically, the first connecting member 513 and the second connecting member 5231 may be screws or connecting columns.

[0054] More specifically, Figure 7 As shown, the diameter of the longitudinal section of the first truncated cone 522 is greater than the diameter of the longitudinal section of the second truncated cone 523.

[0055] In some embodiments of the present application, Figure 2 and Figure 7 As shown, the side of the chassis 521 away from the rotating part 31 is recessed inward to form a receiving groove 16, and the length of the receiving groove 16 along the first direction X is greater than the length of the chassis 521 and the first frustum 522, and less than the length of the first connecting flange 52; the end of the housing 10 away from the sample carrier 40 is placed in the receiving groove 16; and the end face of the second frustum 523 is connected to the end of the housing 10 away from the sample carrier 40 through a second connecting member 5231.

[0056] In this embodiment of the present application, the provision of the receiving groove 16 allows the end of the housing 10 distal to the sample carrier 40 to extend into the receiving groove 16, thereby increasing the connection area between the housing 10 and the first connecting assembly 50 and improving the connection strength. Furthermore, extending the housing 10 into the receiving groove 16 brings the end surface of the housing 10 closer to the outer end surface of the second truncated cone 523, making it easier to connect the end of the housing 10 distal to the sample carrier 40 with screws passing through the second truncated cone 523. This arrangement cleverly and fully utilizes the internal space of the first connecting flange 52, thereby saving space, reducing manufacturing costs, and reducing the weight of the sample holder 1, while also increasing the connection strength between the housing 10 and the first connecting flange 52.

[0057] In some embodiments of the present application, Figure 7 、 Figure 14 、 Figure 15 As shown, the connecting sleeve 51 includes a cylinder wall 511 and a top wall 512 arranged at the first end of the cylinder wall 511. The first end is the end of the cylinder wall 511 close to the rotating member 31. An opening is provided on the top wall 512 for the transmission member 20 to pass through. The top wall 512 is fixedly connected to the guide member 32 through the third connecting member 3201, and the second end face of the cylinder wall 511 abuts against the end face of the chassis 521.

[0058] In the embodiment of the present application, an opening is formed on one side of the tube wall 511, and no bottom wall opposite to the top wall 512 is provided, so that the structure of the connecting sleeve 51 is simplified and the manufacturing cost is saved. The bottom plate 521 abuts against the end surface of the tube wall 511, and can also achieve sealing between the first connecting flange 52 and the connecting sleeve 51, further improving the sealing performance of the sample rod 1.

[0059] Specifically, such as Figure 7 As shown, the top wall 512 and the guide member 32 are connected via a third connecting member 3201 .

[0060] More specifically, Figure 7 and Figure 8 As shown, a sealing ring receiving groove 5120 is provided on the end face of the top wall 512 of the connecting sleeve 51 close to the guide member 32. The sample rod 1 may also include a fifth sealing member 75. The fifth sealing member 75 is placed in the sealing ring receiving groove 5120 to seal the space between the guide member 32 and the connecting sleeve 51, thereby further improving the sealing performance of the sample rod 1.

[0061] In some embodiments of the present application, Figure 1 、 Figure 2 and Figure 6As shown, the rotating member 31 includes a rotating sleeve 312 and a connecting disc 313 connected to the rotating sleeve 312, and the spiral groove 311 is provided on the side wall of the rotating sleeve 312; the sample holder 1 also includes an embossed sleeve 60, which is sleeved on the outside of the rotating sleeve 312, and one end of the embossed sleeve 60 is fixedly connected to the connecting disc 313, and the other end is connected to the connecting sleeve 51.

[0062] In the embodiment of the present application, the embossed sleeve 60 is fixedly connected to the rotating member 31 via the connecting disc 313. Therefore, the rotating member 31 can be rotated by rotating the embossed sleeve 60. The embossed pattern on the embossed sleeve 60 can increase the friction between the user's hand and the embossed sleeve 60, making it easier for the user to rotate the embossed sleeve 60, and thus rotate the rotating member 31, which is ergonomic.

[0063] Specifically, such as Figure 2 and Figure 8 As shown in FIG, the embossing pattern can be raised transverse stripes or longitudinal stripes, or can be intersecting stripes. As shown in FIG, 2, when the embossing pattern is raised longitudinal stripes uniformly arranged along the circumference of the embossing sleeve 60, the rotating member 31 can also be rotated by a preset angle by rotating the embossing sleeve 60.

[0064] More specifically, the end surface of the embossing sleeve 60 is gap-connected with the end surface of the connecting sleeve 51 so that when the embossing sleeve 60 rotates, it will not interfere with the connecting sleeve 51 .

[0065] In some embodiments of the present application, Figures 3 to 6 As shown, a square block 201 is provided at one end of the transmission member 20 away from the sample carrier 40, a groove 2010 is provided on the square block 201, and the moving member 21 is provided in the groove 2010; the guide member 32 is a guide column, and a accommodating cavity 322 extending along the first direction is provided in the guide column, and the square block 201 is located in the accommodating cavity 322.

[0066] In the embodiment of the present application, the end surface of the guide column is fixedly connected to the connecting sleeve 51, such as Figures 3 to 6 As shown, the square block 201 is used to carry the moving part 21, and the guide column has a receiving cavity 322, which can reduce the mass of the guide column while accommodating the square block 201, fully utilizing the space inside the guide column and improving space utilization.

[0067] It should be noted that the moving member 21 can be a column such as a pin.

[0068] Specifically, such as Figure 8 As shown, an annular boss 323 is further provided at one end of the guide column away from the housing 10 , and the sample rod 1 further includes an end cover 82 , which is connected to the inner side wall of the annular boss 323 to further improve the sealing performance of the sample rod 1 .

[0069] More specifically, the outer side wall of the end cover 82 has threads, the inner side wall of the annular boss 323 has threads that match the end cover 82 , and the end cover 82 and the inner side wall of the annular boss 323 are connected via threads.

[0070] In some embodiments of the present application, Figures 10 to 12 As shown, the housing 10 includes a shell 11, an insulating ring 12, a second connecting component 13, and a protective cover 14; the protective cover 14 is connected to the insulating ring 12 through the second connecting component 13, and the insulating ring 12 is connected to the outer end surface of the shell 11; the protective cover 14 is provided with a through hole 15 extending along the first direction, and the through hole 15 is adapted to the shape of the sample carrier 40.

[0071] In the embodiment of the present application, the protective cover 14 can protect the sample carrier 40, and the sample carrier 40 can be retracted into the protective cover 14. Specifically, Figure 2 As shown, the second connecting assembly 13 includes a second connecting flange 131, a fourth connecting member 132, and a connecting plate 133. The second connecting flange 131 is connected to the outer end surface of the insulating ring 12 by screws or bonding, and the fourth connecting member 132 is connected to the second connecting flange 131 by screws or bonding. One end of the protective sleeve 14 is connected to the fourth connecting member 132 via the connecting plate 133. The protective sleeve 14 and the connecting plate 133 can be integrally formed. When the sample holder 1 is connected to other equipment, the insulating ring 12 can provide insulation.

[0072] Specifically, the insulating ring 12 may be made of metal materials such as titanium alloy.

[0073] It should be noted that the housing 11 , the insulating ring 12 , the second connecting flange 131 , the fourth connecting member 132 , and the connecting plate 133 are all provided with an inner cavity extending along the first direction X so that the transmission member 20 can pass through.

[0074] Among them, such as Figure 14 and Figure 15 As shown, the inner cavity of the shell 11 can be divided into at least two sections, and the inner diameter of the first section 111 is larger than the inner diameter of the second section 112. The inner diameter of the second section 112 is adapted to the outer diameter of the transmission rod, and the inner diameter of the first section 111 is larger than the outer diameter of the transmission rod, so that the second section 112 can guide the transmission of the transmission rod, and the larger inner diameter of the first section 111 facilitates the processing of the shell 11.

[0075] Specifically, the housing 11 may be provided with a plurality of chamfers 110 , each of which may be provided with a fourth sealing member 74 . The fourth sealing member 74 may be an elastic member such as a sealing ring with a sealing effect. The fourth sealing member 74 provides a seal when the sample holder 1 is connected to another device.

[0076] In some embodiments of the present application, Figures 10 to 13 As shown, the sample carrier 40 is plate-shaped, the transmission member 20 is a transmission rod, and a slot 22 is provided at one end of the transmission rod close to the sample carrier 40 , and one end of the sample carrier 40 is placed in the slot 22 .

[0077] In the embodiment of this application, Figures 10 to 13 As shown, part of the plate-shaped sample carrier 40 is arranged in the groove 22 of the transmission rod, so that part of the outer side surface of the sample carrier 40 contacts the inner side surface of the groove 22, thereby increasing the contact area between the sample carrier 40 and the transmission rod and improving the connection strength between the sample carrier 40 and the transmission rod.

[0078] Specifically, the connection between the sample carrier 40 and the transmission rod can be screw connection, riveting or bonding, for example, Figure 13 As shown, the sample carrier 40 is connected to the transmission rod via screws to improve the tightness and firmness of the connection between the sample carrier 40 and the transmission rod.

[0079] In some embodiments of the present application, Figure 1 and Figure 10 、 Figure 12 As shown, the sample rod 1 also includes a first seal 71 and a second seal 72. The first seal 71 is arranged inside the outer shell 10; specifically, the first seal 71 is arranged between the fourth connecting member 132 and the connecting plate 133; the sample carrier 40 has a carrying portion 41, and the second seal 72 is arranged on the sample carrier 40 and is located on the outside of the carrying portion 41; when the sample carrier 40 is retracted into the outer shell 10, the first seal 71 and the second seal 72 cooperate to isolate the carrying portion 41 from the outside.

[0080] In the embodiment of the present application, when the sample carrier 40 extends out of the outer shell 10, the first seal 71 and the second seal 72 are released from engagement; when the sample carrier 40 retracts into the outer shell 10, the first seal 71 and the second seal 72 engage. Since the carrier 41 is located on the inner side of the second seal 72, when the first seal 71 and the second seal 72 engage, the carrier 41 can be isolated from the outside air, so that a miniature and sealed chamber is formed between the first seal 71, the second seal 72 and the outer shell 10, thereby preventing the sample from being deteriorated by contact with the air and protecting the sensitive sample.

[0081] Specifically, the sample carrier 40 further includes a pressing plate 42 . A carrier net (not shown) is provided at the carrier portion 41 . The carrier net is used to place the sample, and the pressing plate 42 is used to press the sample.

[0082] Specifically, the first sealing member 71 , the second sealing member 72 and the fourth sealing member 74 may be any elastic member capable of performing a sealing function, such as a rubber sealing ring. More specifically, the rubber may be fluororubber or nitrile rubber.

[0083] The sample rod provided in the embodiment of the present application expands the scope of application of the sample. The traditional sample rod does not have a protective mechanism for the sample, so the sample loading process and the sample delivery process are directly exposed to the air. If the sample contains components that react with water or air components, the loading and sample delivery processes will cause the sample to denature. Even if the loading process is placed in a glove box for protection, the sample rod will still be exposed to air when it is taken out of the glove box and sent to the transmission electron microscope. The sample rod designed by the present invention can load the sample in a glove box or other protective device, and then pull the sample into the closed chamber designed by the sample rod itself for protection, isolating it from the influence of possible air or moisture. The sample rod is then installed in the vacuum chamber of the transmission electron microscope, and the sample is pushed out.

[0084] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0085] The above description is only a preferred embodiment of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application are included in the scope of protection of the present application.

Claims

1. A sample holder for protecting sensitive samples, characterized in that: include: A housing (10), a transmission member (20), a driving device (30), a sample carrier (40), and a first connecting component (50); The transmission member (20) is partially disposed in the housing (10), one end of the transmission member (20) is fixedly connected to the sample carrier (40), and the other end is connected to the driving device (30); the sample carrier (40) is used to carry the sample; The driving device (30) is capable of driving the transmission member (20) to move along a first direction (X) so as to cause the sample carrier (40) to extend out of the housing (10) or retract into the housing (10); The transmission member (20) is provided with a moving member (21) at one end away from the sample carrier (40). The driving device (30) comprises a rotating member (31) with a spiral groove (311) and a guide member (32), wherein the guide member (32) is sleeved on the outside of the moving member (21), and one end of the guide member (32) is fixedly connected to the housing (10) via a first connecting assembly (50), and a guide hole (321) extending along the first direction (X) is provided on the guide member (32); The rotating member (31) is sleeved on the guide member (32), the moving member (21) extends out of the guide hole (321) through the guide hole (321), and at least a portion of the moving member (21) is located in the spiral groove (311) of the rotating member (31). By rotating the rotating member (31), the side wall of the spiral groove (311) pushes the moving member (21) to move along the first direction (X).

2. The sample holder for protecting sensitive samples according to claim 1, characterized in that: The first connecting assembly (50) comprises a connecting sleeve (51) and a first connecting flange (52), wherein the first connecting flange (52) is fixedly connected to the end of the housing (10), and the first connecting flange (52) is also fixedly connected to the connecting sleeve (51).

3. The sample holder for protecting sensitive samples according to claim 2, characterized in that: The first connecting flange (52) includes a chassis (521), a first truncated platform (522) provided on the chassis (521), and a second truncated platform (523) provided on a side of the first truncated platform (522) away from the chassis (521). The side wall of the first truncated cone (522) is connected to the side wall of the connecting sleeve (51) via a first connecting member (513).

4. The sample holder for protecting sensitive samples according to claim 3, characterized in that: The side surface of the chassis (521) away from the rotating member (31) is recessed inward to form an accommodating groove (16), and the length of the accommodating groove (16) along the first direction is greater than the length of the chassis (521) and the first truncated cone (522), and less than the length of the first connecting flange (52); One end of the housing (10) away from the sample carrier (40) is placed in the accommodating groove (16); and the end surface of the second frustum (523) is connected to the end of the housing (10) away from the sample carrier (40) through a second connecting member (5231).

5. The sample holder for protecting sensitive samples according to claim 3, characterized in that: The connecting sleeve (51) comprises a cylinder wall (511) and a top wall (512) provided at a first end of the cylinder wall (511), wherein the first end is an end of the cylinder wall (511) close to the rotating member (31), and an opening is provided on the top wall (512) for the transmission member (20) to pass through. The top wall (512) is fixedly connected to the guide member (32) via a third connecting member (3201), and the second end face of the cylinder wall (511) abuts against the end face of the chassis (521).

6. The sample holder for protecting sensitive samples according to claim 2, characterized in that: The rotating member (31) comprises a rotating sleeve (312) and a connecting disc (313) connected to the rotating sleeve (312), and the spiral groove (311) is provided on a side wall of the rotating sleeve (312); The sample rod further comprises an embossed sleeve (60), which is sleeved on the outside of the rotating sleeve (312), and one end of the embossed sleeve (60) is fixedly connected to the connecting disc (313), and the other end is connected to the connecting sleeve (51).

7. The sample holder for protecting sensitive samples according to claim 2, characterized in that: A square block (201) is provided at one end of the transmission member (20) away from the sample carrier (40), a groove (2010) is provided on the square block (201), and the moving member (21) is arranged in the groove (2010); The guide member (32) is a guide column, and a receiving cavity (322) extending along a first direction is provided in the guide column, and the square block (201) is located in the receiving cavity (322).

8. The sample holder for protecting sensitive samples according to claim 1, characterized in that: The housing (10) comprises a shell (11), an insulating ring (12), a second connecting component (13), and a protective cover (14); The protective sleeve (14) is connected to the insulating ring (12) via the second connecting assembly (13), and the insulating ring (12) is connected to the outer end surface of the housing (11); The protective cover (14) is provided with a through hole (15) extending along the first direction (X), and the through hole (15) is adapted to the shape of the sample carrier (40).

9. The sample holder for protecting sensitive samples according to claim 1, characterized in that: The sample carrier (40) is plate-shaped, the transmission member (20) is a transmission rod, and a slot (22) is provided at one end of the transmission rod close to the sample carrier (40), and one end of the sample carrier (40) is placed in the slot (22).

10. The sample holder for protecting sensitive samples according to any one of claims 1 to 9, characterized in that: The sample holder further comprises a first sealing member (71) and a second sealing member (72), wherein the first sealing member (71) is disposed inside the housing (10); The sample carrier (40) has a carrier portion (41), and the second sealing member (72) is provided on the sample carrier (40) and is located outside the carrier portion (41); When the sample carrier (40) is retracted into the housing (10), the first sealing member (71) cooperates with the second sealing member (72) to isolate the carrier (41) from the outside.

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