A cryogenic rack assembly and low temperature sample storage device

Abstract

This utility model discloses a cryopreservation rack assembly and a low-temperature sample storage device. The cryopreservation rack assembly includes a storage frame and at least one cryopreservation rack. The storage frame has at least one storage space with a storage inlet and outlet. The cryopreservation rack can be slidably inserted into the storage space through the storage inlet and outlet. The cryopreservation rack has multiple storage spaces for storing sample boxes. The cryopreservation rack is configured to slide only in the sliding insertion direction during insertion into the storage space, and to be stopped in the sliding insertion direction after insertion is completed. The cryopreservation rack and the storage frame of this cryopreservation rack assembly are assembled by sliding insertion, resulting in high efficiency in both assembly and disassembly. The fact that the cryopreservation rack can only slide in the sliding insertion direction during assembly with the storage frame, and is stopped in the sliding insertion direction after insertion, improves assembly accuracy and stability.

Description

Technical Field

[0001] This utility model relates to the field of cryopreservation rack technology, and in particular to a cryopreservation rack assembly and a low-temperature sample storage device. Background Technology

[0002] Cryopreservation racks are crucial equipment in the cryogenic storage of biological samples. They are primarily used to systematically store cryovials, cryoboxes, or cryopreservation bags, facilitating sample classification, identification, and management. For ease of storage and retrieval, cryopreservation racks are typically housed within a frame and secured with screws. However, this screw-secured method requires manual adjustment and positioning during installation and makes it difficult to quickly remove and transfer the entire rack in case of emergency refrigeration failure. Utility Model Content

[0003] The purpose of this utility model is to provide a cryopreservation rack assembly and a low-temperature sample storage device. The cryopreservation rack assembly and the storage frame can not only achieve assembly and positioning, but also have high assembly and disassembly efficiency.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A cryopreservation rack assembly includes: a storage frame having at least one storage space with a storage inlet / outlet; at least one cryopreservation rack that can be slidably inserted into the storage space through the storage inlet / outlet, the cryopreservation rack having multiple storage spaces for storing sample boxes; wherein the cryopreservation rack is configured to slide only in a sliding insertion direction during insertion into the storage space, and to be stopped in the sliding insertion direction after insertion is completed.

[0006] Preferably, one of the cryopreservation rack and the storage frame is provided with a groove structure on its upper side and the other is provided with a slider structure on its upper side. The slider structure is slidably inserted into the groove structure. The slider structure and the groove structure restrict each other from moving in the non-sliding direction.

[0007] Preferably, the bottom of the slide groove structure has a recessed structure that is concave to both sides, and the slider structure has a protruding structure that protrudes to both sides corresponding to the position of the slide groove structure, with the recessed structure and the protruding structure cooperating with each other.

[0008] Preferably, a positioning mechanism is provided between the cryopreservation rack and the storage frame, which can position the cryopreservation rack within the storage space in the sliding insertion direction.

[0009] Preferably, the positioning mechanism includes a positioning hole and a retractable elastic positioning element, one of which is located on the cryopreservation rack and the other is located on the storage frame. The elastic positioning element has a limiting state that extends into the positioning hole and a avoidance state that moves away from the positioning hole.

[0010] Preferably, the elastic positioning element includes an elastic body and a positioning bead. One end of the elastic body is fixed to the storage frame, and the other end is connected to the positioning bead, which can extend into the positioning hole.

[0011] Preferably, the bottom of the storage space is provided with a groove structure, and the bottom of the cryopreservation rack is provided with a slider structure, which is slidably inserted into the groove structure.

[0012] Preferably, one of the cryopreservation rack and the storage frame has a recessed groove structure, and the other has a convex slider structure. The slider structure is slidably inserted into the groove structure. The first sliding surface of the slider structure that slides into the groove structure is a concave-convex surface, and the second sliding surface of the groove structure that slides into the slider structure is a concave-convex surface. The concave surface of the first sliding surface corresponds to the concave surface of the second sliding surface, and the convex surface of the first sliding surface corresponds to the convex surface of the second sliding surface.

[0013] Preferably, the storage frame includes a top storage plate, at least one placement plate, a connecting rod, and a bottom support member. The top storage plate and the placement plate are vertically spaced apart. The connecting rod connects the top storage plate and the placement plate, as well as between two adjacent layers of placement plates. The bottom support member supports the placement plate located at the bottommost layer. Alternatively, the cryopreservation rack includes an upper connecting plate, a left side plate, a right side plate, a lower connecting plate, and multiple partition plates. The upper connecting plate, the left side plate, the right side plate, and the lower connecting plate are connected to form a cubic frame. The partition plates are connected to the inner side of the left side plate and / or the inner side of the right side plate, and enclose the storage space.

[0014] A low-temperature sample storage device includes a sample box and the aforementioned cryopreservation rack assembly, wherein the sample box is disposed within the storage space.

[0015] The beneficial effects of this utility model are:

[0016] The cryopreservation rack assembly provided by this utility model includes a storage frame and at least one cryopreservation rack. The storage frame has at least one storage space with a storage inlet and outlet. The cryopreservation rack can be slidably inserted into the storage space through the storage inlet and outlet. The cryopreservation rack has multiple storage spaces for storing sample boxes. The cryopreservation rack is configured to slide only in the sliding insertion direction during insertion into the storage space, and to be stopped in the sliding insertion direction after the sliding insertion is completed. The cryopreservation rack and the storage frame of this cryopreservation rack assembly are assembled by sliding insertion, resulting in high efficiency in both assembly and disassembly. The fact that the cryopreservation rack can only slide in the sliding insertion direction during assembly with the storage frame, and is stopped in the sliding insertion direction after the sliding insertion is completed, improves assembly accuracy and stability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the cryopreservation rack assembly provided by this utility model;

[0018] Figure 2 This is a front view of the cryopreservation rack assembly provided by this utility model;

[0019] Figure 3 This is a schematic diagram of the storage frame provided by this utility model;

[0020] Figure 4 This is a schematic diagram of the cryopreservation rack provided by this utility model.

[0021] In the picture:

[0022] 100. Storage frame; 101. Storage space; 102. Slide structure; 103. Second sliding surface; 110. Storage top plate; 120. Placement plate; 130. Connecting rod; 140. Bottom support; 141. First support; 142. Second support;

[0023] 200. Frozen storage rack; 201. Storage space; 202. Sliding block structure; 203. First sliding surface; 210. Upper connecting plate; 220. Left side plate; 230. Right side plate; 240. Lower connecting plate; 250. Divider plate;

[0024] 300. Sample box;

[0025] 401, Positioning hole; 402, Elastic positioning element. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] This utility model discloses a cryopreservation rack assembly, such as Figures 1 to 4As shown, the cryopreservation rack assembly includes a storage frame 100 and at least one cryopreservation rack 200. The storage frame 100 has at least one storage space 101, and the number of storage spaces 101 is not less than the number of cryopreservation racks 200. Each storage space 101 has a storage inlet / outlet, and the cryopreservation rack 200 can be slidably inserted into the storage space 101 through the storage inlet / outlet. Each cryopreservation rack 200 has multiple storage spaces 201 for storing sample boxes 300, allowing each cryopreservation rack 200 to store multiple sample boxes 300 at a time. Furthermore, the cryopreservation rack 200 can only slide in the sliding insertion direction during insertion into the storage space 101; after the cryopreservation rack 200 completes its sliding insertion into the storage frame 100, it can be stopped in the sliding insertion direction. It should be noted that "being restricted" here does not mean a complete restriction of being fixed, but a relative restriction with an external force threshold. That is, the cryopreservation rack 200 is restricted from moving in the restricted position. When the external force applied to the cryopreservation rack 200 is greater than or equal to the target threshold, the restriction is released, making the cryopreservation rack 200 movable. When the external force applied to the cryopreservation rack 200 is less than the target threshold, the cryopreservation rack 200 cannot be moved. The specific value of the target threshold for external force is not specified here.

[0031] Compared to related technologies that use screws to assemble the cryopreservation rack and the shelf on which it is placed, the cryopreservation rack 200 and the shelf 100 of the cryopreservation rack assembly disclosed in this utility model are assembled and disassembled by sliding insertion. This not only makes the assembly and disassembly more efficient, but also allows the cryopreservation rack 200, which contains multiple sample boxes 300, to be placed into or removed from the shelf 100 as a whole, making it more convenient to put in and take out. In the event of an emergency where the refrigeration fails, the entire cryopreservation rack 200 can be quickly pulled out and transferred. Compared to technical solutions that lack positioning or limit after assembly, the cryopreservation rack 200 and storage frame 100 disclosed in this utility model have a limit in the non-sliding insertion direction during assembly, which allows the cryopreservation rack 200 to slide only in the sliding insertion direction, thus improving assembly accuracy. Furthermore, after the cryopreservation rack 200 completes the sliding insertion with the storage frame 100, it can be limited in the sliding insertion direction, improving assembly stability. This design achieves reliable fixation and precise positioning of the cryopreservation rack 200.

[0032] In some embodiments, the cryopreservation rack 200 and the storage frame 100 are assembled and disassembled by a lateral sliding insertion method, and the cryopreservation rack 200 and the storage frame 100 after insertion can be limited in the vertical direction and positioned in the sliding insertion direction.

[0033] Regarding the structure of the storage frame 100, optionally, the storage frame 100 is a frame structure formed by splicing plates and rods. For example... Figure 3As shown, in some embodiments, the storage frame 100 includes a top shelf 110, a placement plate 120, a connecting rod 130, and a bottom support 140. The number of placement plates 120 can be set to one or more as needed. The top shelf 110 and the placement plates 120 are arranged vertically at intervals. The connecting rod 130 connects the top shelf 110 and the placement plate 120, or connects the upper and lower placement plates 120, to support the placement plates 120 and the top shelf 110. The bottom support 140 supports the placement plate 120 located at the bottommost layer. Of course, in other embodiments, the storage frame 100 can also be a one-piece molded part made by injection molding or other processes.

[0034] In some embodiments, both the top shelf 110 and the placement plate 120 are rectangular plates. Four connecting rods 130 are provided between the top shelf 110 and the placement plate 120, arranged in two rows and two columns. The top end of each connecting rod 130 is connected to the corner of the top shelf 110 or the upper placement plate 120, and the bottom end of the connecting rod 130 is connected to the corner of the lower placement plate 120. Optionally, the connecting rods 130 are square tubes or round tubes.

[0035] In some embodiments, the top plate 110 and the connecting rod 130, the placement plate 120 and the connecting rod 130, and the bottom support 140 and the placement plate 120 are all detachably connected. The detachable connection methods include, but are not limited to, plug-in connection, screw connection, etc.

[0036] In some embodiments, the bottom support 140 includes a first support 141, which is generally L-shaped. The vertical portion of the first support 141 is connected to the bottom surface of the lowest placement plate 120, and the horizontal portion of the first support 141 touches the ground to increase the support area. Optionally, the first support 141 is located at the edge of the placement plate 120. In some embodiments, the bottom support 140 includes a second support 142, which is generally rectangular. The top of the second support 142 is connected to the bottom surface of the lowest placement plate 120, and the bottom of the second support 142 touches the ground. Optionally, the second support 142 is located in the middle of the placement plate 120. It should be noted that the bottom support 140 may include only the first support 141, only the second support 142, or both. In a specific embodiment, such as... Figure 3 As shown, there are two of each of the first support member 141 and the second support member 142.

[0037] Optionally, at least one of the top plate 110, the placement plate 120, the first support member 141, and the second support member 142 is provided with a hollow structure to reduce the weight of the storage frame 100 and the manufacturing cost.

[0038] Regarding the structure of the cryopreservation rack 200, optionally, the cryopreservation rack 200 is a frame structure formed by splicing together plates. For example... Figure 4 As shown, in some embodiments, the cryopreservation rack 200 includes an upper connecting plate 210, a left side plate 220, a right side plate 230, a lower connecting plate 240, and a plurality of partition plates 250. The upper connecting plate 210, the left side plate 220, the right side plate 230, and the lower connecting plate 240 are connected to form a cubic frame with a front opening and a rear opening. The front opening is the aforementioned storage entrance and exit. The partition plates 250 are connected to the left side plate 220 and the right side plate 230. The upper and lower partition plates 250 enclose a storage space 201. It should be noted that one end of the partition 250 can be connected to the left side panel 220 and the other end to the right side panel 230, with the upper and lower partitions 250 and the corresponding left side panel 220 and right side panel 230 forming a storage space 201; alternatively, a partition 250 can be connected to the inner side of the left side panel 220 and the right side panel 230 respectively, with the two partitions 250 spaced apart horizontally, with the upper and lower partitions 250 and the corresponding left side panel 220 and right side panel 230 forming a storage space 201.

[0039] In some embodiments, the cryopreservation rack assembly further includes a sample box 300, and the storage space 201 has a storage inlet and outlet, through which the sample box 300 is slidably inserted into the storage space 201.

[0040] To prevent the sample box 300 from moving excessively and detaching from the cryopreservation rack 200 within the storage space 201, the cryopreservation rack 200 also includes a limiting plate. The limiting plate can be connected to the left side plate 220 and / or the right side plate 230, or it can be connected to the partition plate 250, thereby limiting the sample box 300 after it enters the storage space 201, so that the sample box 300 can no longer move.

[0041] In some embodiments, the storage inlet / outlet and the placement inlet / outlet are located on different sides. This arrangement facilitates the use of an automated retrieval mechanism for the sample box 300 and manual retrieval of the cryopreservation rack 200. For example, the automated retrieval mechanism can be a robotic arm.

[0042] In order to achieve the sliding connection between the cryopreservation rack 200 and the storage space 201, a groove structure 102 is provided on one of the cryopreservation rack 200 and the storage frame 100, and a slider structure 202 is provided on the other. The slider structure 202 and the groove structure 102 are slidably connected, and the slider structure 202 and the groove structure 102 restrict each other from moving in the non-sliding direction.

[0043] In some embodiments, the slide structure 102 has a top opening and a front opening, and the slider structure 202 extends in the front-rear direction. When the slider structure 202 is assembled with the slide structure 102, one end of the slider structure 202 is first aligned with the front opening of the slide structure 102, and the slider structure 202 is inserted into the slide structure 102 by moving laterally backward. During this process, the avoidance of the top opening allows the cryopreservation rack 200 to enter the storage space 101 simultaneously.

[0044] In some embodiments, a groove structure 102 is formed at the bottom of the storage space 101, and a slider structure 202 is provided at the bottom of the cryopreservation rack 200. The slider structure 202 is slidably inserted into the groove structure 102. In other embodiments, the slider structure 202 can also be located on the side or top of the cryopreservation rack 200, and correspondingly, the groove structure 102 can also be formed on the side or top of the storage space 101. Furthermore, if the groove structure 102 is located on the cryopreservation rack 200 and the slider structure 202 is located on the shelf frame 100, then the groove structure 102 can be located at the bottom, side, or top of the cryopreservation rack 200, and correspondingly, the slider structure 202 can also be located at the bottom, side, or top of the storage space 101. The groove structure 102 and the slider structure 202 can be configured as one or more sets as needed. Different sets of groove structures 102 and slider structures 202 can be located on the same side or on different sides.

[0045] In one specific embodiment, a slider structure 202 is disposed at the bottom of the cryopreservation rack 200, and a groove structure 102 is disposed on the placement plate 120 of the storage frame 100. Furthermore, each placement plate 120 is provided with multiple groove structures 102, and each cryopreservation rack 200 has a slider structure 202 at its bottom. One cryopreservation rack 200 can be installed at each groove structure 102, allowing multiple cryopreservation racks 200 to be slidably inserted into each storage space 101 of the storage frame 100.

[0046] In order to limit the vertical positioning of the cryopreservation rack 200 and the storage frame 100, the bottom of the slide groove structure 102 has a recessed structure that is recessed to both sides, and the slider structure 202 has a protruding structure that is protruding to both sides corresponding to the position of the slide groove structure 102. The recessed structure and the protruding structure cooperate with each other.

[0047] The chute structure 102 has a groove bottom surface and a groove opening arranged opposite each other. The width of the chute structure 102 gradually decreases in the direction from the groove bottom surface to the groove opening. The slider structure 202 has a connecting end and a free end. The width of the slider structure 202 gradually increases in the direction from the connecting end to the free end. This arrangement ensures that both the groove side surface of the chute structure 102 and the side wall surface of the slider structure 202 are inclined surfaces, thus providing a limiting effect. In a specific embodiment, taking a plane perpendicular to the sliding insertion direction as a cross-section, the cross-sections of both the slider structure 202 and the chute structure 102 are trapezoids. The trapezoid can be an isosceles trapezoid, a right trapezoid, or a general trapezoid. If it is an isosceles trapezoid, it has two hypotenuses, resulting in a better limiting effect. Optionally, the base angle of the trapezoid is 45°.

[0048] Of course, in other embodiments, the width of the groove structure 102 can decrease discontinuously in the direction from the bottom of the groove to the opening, and the width of the slider structure 202 can increase discontinuously in the direction from the connecting end to the free end. For example, taking a plane perpendicular to the sliding insertion direction as a cross-section, both the cross-section of the slider structure 202 and the groove structure 102 are T-shaped or L-shaped. Furthermore, the cross-sectional shapes of the slider structure 202 and the groove structure 102 can be other shapes as needed, such as partially circular or partially elliptical.

[0049] Furthermore, in some embodiments, a first groove is provided on the slider structure 202, and a second groove is formed on the slide groove structure 102, with the first and second grooves corresponding to each other. The first groove makes the first sliding surface 203 on the slider structure 202, which slides with the slide groove structure 102, a concave-convex surface. Similarly, the second groove makes the second sliding surface 103 on the slide groove structure 102, which slides with the slider structure 202, a concave-convex surface. The concave surfaces of the two surfaces correspond to each other, and the convex surfaces also correspond to each other. This arrangement helps to reduce the difficulty of sliding. It should be noted that the number of the first and second grooves can be one or more as needed.

[0050] In order to limit the movement of the cryopreservation rack 200 and the storage frame 100 in the sliding insertion direction, in some embodiments, a positioning mechanism is also provided between the cryopreservation rack 200 and the storage frame 100. The positioning mechanism can position the cryopreservation rack 200 in the storage space 101 in the sliding insertion direction, effectively constraining the movement of the cryopreservation rack 200 in the front and back directions, thereby ensuring the positioning accuracy of the cryopreservation rack 200 and meeting the accuracy requirements of the automated robotic arm for picking up and placing sample boxes 300.

[0051] In some embodiments, the positioning mechanism includes a positioning hole 401 and a retractable elastic positioning member 402. One of the positioning hole 401 and the elastic positioning member 402 is disposed on the cryopreservation rack 200, and the other is disposed on the storage frame 100. The elastic positioning member 402 has a limited state of extending into the positioning hole 401 and a clearance state of disengaging from the positioning hole 401. When the cryopreservation rack 200 moves into position within the storage frame 100, the elastic positioning member 402 extends into the positioning hole 401, preventing the cryopreservation rack 200 from moving laterally, thus achieving the positioning effect. The elastic positioning member 402 and the positioning hole 401 can be configured as one or more sets as needed. Optionally, multiple sets of the elastic positioning member 402 and the positioning hole 401 are provided to improve positioning accuracy and positioning stability.

[0052] For example, the positioning hole 401 is provided on the bottom surface of the slider structure 202 of the cryopreservation rack 200, or optionally on the convex portion of the bottom surface of the slider structure 202; the elastic positioning member 402 is provided on the placement plate 120, or optionally on the convex portion of the bottom surface of the groove structure 102.

[0053] Optionally, the elastic positioning element 402 includes an elastic body and a positioning bead. One end of the elastic body is fixed to the storage frame 100, and the other end is connected to the positioning bead, which can extend into the positioning hole 401. Furthermore, a mounting hole is provided on the placement plate 120, and the elastic element is installed in the mounting hole. In the initial state, the positioning bead extends out of the mounting hole, and in the limited state, the positioning bead extends into the positioning hole 401. After the cryopreservation rack 200 is inserted into the storage frame 100, the bottom surface of the slider structure 202 with positioning hole 401 slides in contact with the bottom surface of the groove structure 102 with mounting hole on the placement plate 120. During the movement of the cryopreservation rack 200, the positioning hole 401 moves towards the positioning bead. Before the positioning hole 401 moves to the position directly opposite the positioning bead, the positioning bead is squeezed into the mounting hole by the bottom surface of the slider structure 202, so that the top of the positioning bead is not higher than the bottom surface of the groove structure 102. When the positioning hole 401 moves to the position directly opposite the positioning bead, the bottom surface of the slider structure 202 releases the pressure on the positioning bead. Under the drive of the elastic body, the positioning bead extends out of the mounting hole and enters the positioning hole 401, thereby achieving the limiting.

[0054] Of course, in other embodiments, the positioning mechanism can also be a positioning plate or positioning block that can be raised and lowered within the slide structure 102, so that the slider structure 202 can be positioned in the front-back direction when it moves to the positioning plate or positioning block.

[0055] This utility model also discloses a low-temperature sample storage device, which includes a sample box 300 and the aforementioned cryopreservation rack assembly. The sample box 300 is disposed within the storage space 201. The low-temperature sample storage device also includes a cold storage room that provides a refrigerated environment. The specific structure of the cold storage room is not described in detail here; any cold storage room from related technologies will suffice.

[0056] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A cryo-shelf assembly, characterized by, include: A storage frame (100) having at least one storage space (101) having a storage entrance / exit; At least one cryopreservation rack (200) is slidably inserted into the storage space (101) through the storage inlet and outlet, and the cryopreservation rack (200) has multiple storage spaces (201) for storing sample boxes (300); The cryopreservation rack (200) is configured to slide only in the sliding insertion direction during insertion into the storage space (101), and to be stopped in the sliding insertion direction after the sliding insertion is completed.

2. The cryo-shelf assembly of claim 1, wherein, One of the cryopreservation rack (200) and the storage frame (100) has a groove structure (102) recessed on the upper side, and the other has a slider structure (202) protruding on the upper side. The slider structure (202) is slidably inserted into the groove structure (102). The slider structure (202) and the groove structure (102) mutually restrict each other's movement in the non-sliding direction.

3. The cryopreservation rack assembly according to claim 2, characterized in that, The bottom of the groove structure (102) has a recessed structure that is recessed to both sides, and the slider structure (202) has a protruding structure that protrudes to both sides corresponding to the position of the groove structure (102). The recessed structure and the protruding structure cooperate with each other.

4. The cryo-shelf assembly of claim 1, wherein, A positioning mechanism is also provided between the cryopreservation rack (200) and the storage frame (100), which can position the cryopreservation rack (200) within the storage space (101) in the sliding insertion direction.

5. The cryo-shelf assembly of claim 4, wherein, The positioning mechanism includes a positioning hole (401) and a retractable elastic positioning member (402). One of the positioning hole (401) and the elastic positioning member (402) is provided on the cryopreservation rack (200), and the other is provided on the storage frame (100). The elastic positioning member (402) has a limited state that extends into the positioning hole (401) and a avoidance state that moves away from the positioning hole (401).

6. The cryopreservation rack assembly according to claim 5, characterized in that, The elastic positioning element (402) includes an elastic body and a positioning bead. One end of the elastic body is fixed to the storage frame (100), and the other end is connected to the positioning bead. The positioning bead can extend into the positioning hole (401).

7. The cryopreservation rack assembly according to claim 1, characterized in that, The bottom of the storage space (101) is provided with a groove structure (102), and the bottom of the cryopreservation rack (200) is provided with a slider structure (202), which is slidably inserted into the groove structure (102).

8. The cryopreservation rack assembly according to claim 1, characterized in that, One of the cryopreservation rack (200) and the storage frame (100) has a groove structure (102) recessed on the upper side, and the other has a slider structure (202) protruding on the upper side. The slider structure (202) is slidably inserted into the groove structure (102). The first sliding surface (203) on the slider structure (202) that slides with the slide groove structure (102) is a concave-convex surface, and the second sliding surface (103) on the slide groove structure (102) that slides with the slider structure (202) is a concave-convex surface. The concave surface of the first sliding surface (203) and the concave surface of the second sliding surface (103) are respectively arranged, and the convex surface of the first sliding surface (203) and the convex surface of the second sliding surface (103) are respectively arranged.

9. The cryopreservation rack assembly according to any one of claims 1-8, characterized in that, The storage frame (100) includes a top storage plate (110), at least one placement plate (120), a connecting rod (130), and a bottom support (140). The top storage plate (110) and the placement plate (120) are arranged vertically at intervals. The connecting rod (130) connects the top storage plate (110) and the placement plate (120) and between two adjacent layers of the placement plates (120). The bottom support (140) is supported below the lowest layer of the placement plate (120). And / or, the cryopreservation rack (200) includes an upper connecting plate (210), a left side plate (220), a right side plate (230), a lower connecting plate (240), and a plurality of partition plates (250). The upper connecting plate (210), the left side plate (220), the right side plate (230), and the lower connecting plate (240) are connected to form a cubic frame. The partition plates (250) are connected to the inside of the left side plate (220) and / or the inside of the right side plate (230), and enclose the storage space (201).

10. A low-temperature sample storage device, characterized in that, Includes a sample box (300) and a cryopreservation rack assembly according to any one of claims 1-9, wherein the sample box (300) is disposed within the storage space (201).

Images