Blood extraction and preservation case

Abstract

The present application relates to the technical field of storage box, specifically speaking of a kind of blood extraction storage box, including sliding structure, fixed structure, storage structure, limiting structure and lifting structure, the setting of sliding structure increases the maintenance space of operator, it is convenient to operate, and then improve the maintenance efficiency, the setting of lifting structure solves the problem that when needing to take a certain layer blood bag, need to open cabinet door completely and lead to cold air loss, affect the preservation effect, while it is convenient to take the blood bag at the top of refrigeration box, flexibility is strong, the setting of limiting structure is convenient for effectively fixed to the support, improves stability, the setting of storage structure is convenient for protecting the label written with information, prevent it from falling off or damage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of storage boxes, in particular to a blood extraction storage box. BACKGROUND

[0002] Blood needs to be transported, centrifuged and stored at a constant temperature after extraction, and a storage box is often used to provide a constant temperature condition for the blood to prevent it from deteriorating during storage.

[0003] However, when the compressor at the bottom of the traditional storage box is damaged, the operator needs to insert the repair tool into the gap of the equipment for repair, which is not convenient for operation due to the small gap distance, resulting in low operation efficiency. When the information of the stored blood needs to be identified, the label is often directly pasted on the shelf, but the label is easy to fall off or be damaged, making it difficult to identify the marked content. When a blood bag on a shelf needs to be taken out, the cabinet door needs to be fully opened, resulting in loss of cold air in the box body, poor storage effect, and the shelf position near the top is high, which is not convenient for taking out and has poor flexibility. SUMMARY

[0004] In view of the problems in the prior art, the present application provides a blood extraction storage box.

[0005] The technical scheme adopted by the present application to solve the technical problem is: a blood extraction storage box, comprising a refrigerator, a sliding structure for conveniently repairing internal elements is arranged on the refrigerator, a storage structure is connected to the refrigerator, a lifting structure for adjusting the height of the storage structure is arranged on the refrigerator, a limiting structure for fixing the storage structure is arranged on the storage structure, and a fixing structure for placing labels is arranged on the storage structure.

[0006] The sliding structure comprises a bottom plate, the bottom plate is slidably connected to the refrigerator, a connecting plate is fixedly connected to the bottom plate, the connecting plate is slidably connected to the refrigerator, a first extension spring is fixedly connected between the connecting plate and the refrigerator, a storage tray is slidably connected to the refrigerator, two connecting blocks are fixedly connected to the bottom end of the storage tray, a roller is rotatably connected to each of the two connecting blocks, the roller is rollingly connected to a first guide rail, and the first guide rail is fixedly connected to the bottom plate.

[0007] Specifically, a first rotating shaft is fixedly connected to the refrigerator, and a protective door is rotatably connected to the first rotating shaft.

[0008] Specific, the storage structure includes a shelf, the refrigerator box is slidably connected with a shelf, the shelf is fixedly connected with a sliding block, the inner wall of the refrigerator box is fixedly connected with a second guide rail, the second guide rail is slidably connected with a sliding block, the side wall of the shelf is fixedly connected with a first guide rod, the first guide rod is slidably connected with a sealing block, the sealing block and the shelf are fixedly connected with a third expansion spring, and the third expansion spring penetrates the first guide rod.

[0009] Specific, the sealing block is provided with a rubber ring, and the refrigerator box is provided with a rubber strip.

[0010] Specific, the limiting structure includes a drive rod, the shelf is slidably connected with a drive rod, the shelf is fixedly connected with a second guide rod, the drive rod is slidably connected with the second guide rod, the drive rod and the shelf are fixedly connected with a fifth expansion spring, the shelf is slidably connected with a limiting block, the limiting block and the shelf are fixedly connected with a fourth expansion spring, and the drive rod and the limiting block are slidably connected.

[0011] Specific, the cross section of the drive rod is in the shape of "L", the drive rod is slidably fitted between the triangular grooves on the limiting block, and the limiting block is clamped in the limiting hole formed in the refrigerator box.

[0012] Specific, the lifting structure includes a third guide rod, two third guide rods are fixedly connected side by side on the side wall of the refrigerator box, two drive blocks are slidably connected on the two third guide rods respectively, the drive blocks are slidably connected with the refrigerator box, the sixth expansion spring is fixedly connected between the two drive blocks, the sixth expansion spring is fixedly connected between the bottom drive block and the refrigerator box, and the third guide rail is fixedly connected on the drive block.

[0013] Specific, the cross section of the drive block is in the shape of "U", and the end of the third guide rail is inclined.

[0014] Specific, the fixing structure includes a transparent plate, the shelf is rotatably connected with a transparent plate through a rotating shaft, the transparent plate is slidably connected with a resisting block, the resisting block and the transparent plate are fixedly connected with a second expansion spring, and the resisting block is clamped in the groove on the shelf.

[0015] Specific, the transparent plate is rotatably connected with a second rotating shaft, the second rotating shaft is rollingly connected with a first sliding groove, the first sliding groove is formed in a connecting rod, a second sliding groove is formed in the connecting rod, a third rotating shaft is rollingly connected in the second sliding groove, and the third rotating shaft is rotatably connected with the shelf.

[0016] The beneficial effects of the application are:

[0017] The present invention discloses a blood extraction and preservation box, wherein the refrigerated box is provided with a sliding structure that facilitates the maintenance of internal components. The sliding structure increases the maintenance space for operators, facilitates operation, and thus improves maintenance efficiency.

[0018] The present invention discloses a blood extraction and preservation box, wherein a storage structure is connected to the refrigerated box, and the refrigerated box is provided with a lifting structure for adjusting the height of the storage structure. The storage structure, in conjunction with the lifting structure, adjusts the position of the stored blood bags. The lifting structure solves the problem that when a certain layer of blood bags needs to be retrieved, the cabinet door needs to be fully opened, resulting in the loss of cold air and affecting the preservation effect. At the same time, it facilitates the retrieval of blood bags at the top of the refrigerated box, and is highly flexible.

[0019] The present invention discloses a blood extraction and preservation box, wherein the storage structure is provided with a limiting structure for fixing the storage structure. The limiting structure facilitates the effective fixing of the shelf and improves stability.

[0020] The present invention discloses a blood extraction and preservation box, wherein the storage structure is provided with a fixing structure for placing labels. The storage structure is designed to protect the labels containing information and prevent them from falling off or being damaged. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of a blood extraction and preservation box provided by the present invention;

[0023] Figure 2 for Figure 1 The diagram shown is an enlarged view of the structure of part A.

[0024] Figure 3 for Figure 1 The diagram shown is an enlarged view of the structure of section B.

[0025] Figure 4 for Figure 1 The diagram shows an enlarged view of section C.

[0026] Figure 5 This is a schematic diagram of the sliding structure of the present invention;

[0027] Figure 6 Figure 5 The diagram shown is an enlarged view of the structure of part D.

[0028] Figure 7 This is a schematic diagram of the connection structure between the storage structure and the limiting structure of the present invention;

[0029] Figure 8It is a schematic view of the connecting structure of the storage structure and the lifting structure of the application.

[0030] Figure 9 It is a schematic view of the structure of the fixing structure of the application.

[0031] In the figure: 1, a refrigeration box; 2, a sliding structure; 201, a bottom plate; 202, a connecting plate; 203, a first extension spring; 204, a first guide rail; 205, a storage tray; 206, a connecting block; 207, a roller; 208, a protective door; 209, a first rotating shaft; 3, a fixing structure; 301, a transparent plate; 302, a stop block; 303, a second extension spring; 304, a connecting rod; 305, a second rotating shaft; 306, a first sliding groove; 307, a third rotating shaft; 308, a second sliding groove; 4, a storage structure; 401, a storage rack; 402, a sliding block; 403, a sealing block; 404, a first guide rod; 405, a third extension spring; 406, a second guide rail; 407, a rubber ring; 408, a rubber strip; 5, a limiting structure; 501, a limiting block; 502, a fourth extension spring; 503, a driving rod; 504, a second guide rod; 505, a fifth extension spring; 506, a limiting hole; 6, a lifting structure; 601, a third guide rod; 602, a driving block; 603, a sixth extension spring; 604, a third guide rail. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, purposes and effects of the application easy to understand, the application is further described below in combination with specific embodiments.

[0033] As Figures 1-9 shown, the blood extraction and preservation box comprises a refrigeration box 1, a sliding structure 2 for facilitating maintenance of internal elements is arranged on the refrigeration box 1; a storage structure 4 is connected to the refrigeration box 1; a lifting structure 6 for adjusting the height of the storage structure 4 is arranged on the refrigeration box 1; a limiting structure 5 for fixing the storage structure 4 is arranged on the storage structure 4; a fixing structure 3 for placing labels is arranged on the storage structure 4.

[0034] The sliding structure 2 comprises a bottom plate 201, the bottom plate 201 is slidably connected to the refrigeration box 1, a connecting plate 202 is fixedly connected to the bottom plate 201, the connecting plate 202 is slidably connected to the refrigeration box 1, a first extension spring 203 is fixedly connected between the connecting plate 202 and the refrigeration box 1, a storage tray 205 is slidably connected to the refrigeration box 1, two connecting blocks 206 are fixedly connected to the bottom end of the storage tray 205, rollers 207 are rotatably connected to the two connecting blocks 206, the rollers 207 are rollingly connected to a first guide rail 204, and the first guide rail 204 is fixedly connected to the bottom plate 201.

[0035] When the compressor inside the refrigeration box 1 needs to be repaired, the protection door 208 is only opened by a key, and then the protection door 208 is rotated through the first rotating shaft 209, at this time the connecting plate 202 at the bottom end of the bottom plate 201 drives the bottom plate 201 to slide out outward under the reset action of the first extension spring 203, and the bottom plate 201 is fixedly connected with the first guide rail 204, and then the object placing disc 205 is pulled outward, at this time the rolling wheels 207 rotating on the two connecting blocks 206 roll between the first guide rail 204, until the rear connecting block 206 abuts between the bottom plate 201, thereby effectively increasing the sliding distance of the object placing disc 205 outward, and the object placing disc 205 slides out from the inside of the refrigeration box 1 together with the compressor, so as to facilitate the operator to repair and improve the repair efficiency.

[0036] Specifically, the storage structure 4 includes a storage rack 401, the storage rack 401 is slidingly connected on the refrigeration box 1, the storage rack 401 is fixedly connected with a sliding block 402, the inner wall of the refrigeration box 1 is fixedly connected with a second guide rail 406, the second guide rail 406 is slidingly connected with the sliding block 402, the side wall of the storage rack 401 is fixedly connected with a first guide rod 404, the first guide rod 404 is slidingly connected with a sealing block 403, the third extension spring 405 is fixedly connected between the sealing block 403 and the storage rack 401, the third extension spring 405 penetrates through the first guide rod 404, the sealing block 403 is provided with a rubber ring 407, and the refrigeration box 1 is provided with a rubber strip 408; the storage rack 401 is pulled out outward along the side wall, the sliding block 402 on the side of the storage rack 401 and the sealing block 403 slide between the second guide rail 406, while continuously pulling the storage rack 401 outward along the side wall, first, the sealing block 403 slides from the second guide rail 406 to the third guide rail 604, and abuts against the driving block 602, at this time the position of the sealing block 403 no longer changes, the storage rack 401 is continuously pulled outward, so that the sealing block 403 slides between the first guide rod 404, and the third extension spring 405 is compressed, until the sliding block 402 slides from the second guide rail 406 to the third guide rail 604, at this time the end of the storage rack 401 is completely pulled out from the side wall of the refrigeration box 1, thereby effectively ensuring the sealing performance of the cavity inside the refrigeration box 1 when the storage rack 401 is completely returned, and avoiding the problem that the storage effect is poor when the cabinet door is completely opened to take a blood bag on a single layer.

[0037] Specific, the limiting structure 5 includes drive rod 503, the drive rod 503 is slidably connected to the shelf 401, the shelf 401 is fixedly connected with the second guide rod 504, the drive rod 503 is slidably connected to the second guide rod 504, the fifth telescopic spring 505 is fixedly connected between the drive rod 503 and the shelf 401, the limiting block 501 is slidably connected to the shelf 401, the fourth telescopic spring 502 is fixedly connected between the limiting block 501 and the shelf 401, the drive rod 503 is slidably connected with the limiting block 501, the cross section of the drive rod 503 is in the shape of "L", the drive rod 503 is slidably fitted between the triangular grooves on the limiting block 501, and the limiting block 501 is clamped in the limiting hole 506 formed in the refrigerator 1; when the blood bag on the top shelf 401 needs to be taken, the drive rod 503 on the shelf 401 is only pressed, and then the drive rod 503 slides along the second guide rod 504 and compresses the fifth telescopic spring 505, the drive rod 503 extrudes the triangular groove on the limiting block 501, and then drives the limiting block 501 to extrude the fourth telescopic spring 502 downward, and no longer clamps the limiting hole 506, so that the shelf 401 can be pulled, which can effectively fix the shelf 401 and improve its stability.

[0038] Specific, the lifting structure 6 includes a third guide rod 601, two third guide rods 601 are fixedly connected side by side on the side wall of the refrigerator 1, two drive blocks 602 are slidably connected to the two third guide rods 601 respectively, the drive block 602 is slidably connected to the refrigerator 1, the sixth telescopic spring 603 is fixedly connected between the two drive blocks 602, the sixth telescopic spring 603 is fixedly connected between the bottom drive block 602 and the refrigerator 1, the third guide rail 604 is fixedly connected to the drive block 602, the cross section of the drive block 602 is in the shape of "U", and the end of the third guide rail 604 is inclined; at this time, the shelf 401 is fixed between the two drive blocks 602 through the two side sliding blocks 402, and then the shelf 401 is pulled downward, the shelf 401 drives the drive block 602 to slide downward along the third guide rod 601 and compresses the sixth telescopic spring 603, the blood bag is taken out after being pulled to the appropriate position, and the shelf 401 is slowly driven, the drive block 602 is driven to slide to the initial position under the reset action of the sixth telescopic spring 603, the shelf 401 is released, the shelf 401 is slid to the second guide rail 406 under the reset action of the third telescopic spring 405, the sliding block 402 is slid to the second guide rail 406 from the third guide rail 604, and the shelf 401 is completely pushed into the interior of the refrigerator 1 after the third telescopic spring 405 is completely reset, so that the blood bag at the top of the refrigerator 1 is easily taken, and the flexibility is high.

[0039] Specific, the fixed structure 3 includes transparent plate 301, the shelf 401 is rotatably connected with transparent plate 301 through pivot, the sliding block 302 is slidably connected on the transparent plate 301, the second extension spring 303 is fixedly connected between the sliding block 302 and the transparent plate 301, the sliding block 302 is engaged in the recess on the shelf 401, the second pivot 305 is rotatably connected on the transparent plate 301, the second pivot 305 is rollably connected on the first sliding groove 306, the first sliding groove 306 is formed on the connecting rod 304, the second sliding groove 308 is formed on the connecting rod 304, the third pivot 307 is rollably connected on the second sliding groove 308, and the third pivot 307 is rotatably connected on the shelf 401;Blood bags are sequentially placed on the shelf 401 on the refrigeration box 1, and then information-labeled labels need to be placed on each shelf 401, the transparent plate 301 is only buckled outward through the recess, the sliding block 302 at the end of the transparent plate 301 is a trapezoidal structure, and the sliding block 302 is compressed inward when the transparent plate 301 is buckled outward, the transparent plate 301 is rotated outward through the pivot, the third pivot 307 on the shelf 401 is rolled on the second sliding groove 308 formed on the connecting rod 304, and the second pivot 305 on the transparent plate 301 is rolled in the first sliding groove 306, so that the range of the transparent plate 301 is expanded, and the transparent plate 301 can be prevented from falling completely, the information-labeled label is placed between the transparent plate 301 and the shelf 401, the transparent plate 301 is reset, the sliding block 302 is engaged with the recess on the shelf 401 under the reset action of the second extension spring 303, the label can be effectively fixed, the label is protected, and the flexibility is high.

[0040] In use, first, blood bags are sequentially placed on the shelf 401 on the refrigeration box 1, and then information-labeled labels need to be placed on each shelf 401, the transparent plate 301 is only buckled outward through the recess, the sliding block 302 at the end of the transparent plate 301 is a trapezoidal structure, and the sliding block 302 is compressed inward when the transparent plate 301 is buckled outward, the transparent plate 301 is rotated outward through the pivot, the third pivot 307 on the shelf 401 is rolled on the second sliding groove 308 formed on the connecting rod 304, and the second pivot 305 on the transparent plate 301 is rolled in the first sliding groove 306, so that the range of the transparent plate 301 is expanded, and the transparent plate 301 can be prevented from falling completely, the information-labeled label is placed between the transparent plate 301 and the shelf 401, the transparent plate 301 is reset, the sliding block 302 is engaged with the recess on the shelf 401 under the reset action of the second extension spring 303, the label can be effectively fixed, the label is protected, and the flexibility is high.

[0041] When the compressor inside the refrigeration box 1 needs to be repaired, the protection door 208 is only opened by a key, and then the protection door 208 is rotated through the first rotating shaft 209, at this time, the connecting plate 202 at the bottom end of the bottom plate 201 drives the bottom plate 201 to slide out outward under the reset action of the first extension spring 203, and the bottom plate 201 is fixedly connected with the first guide rail 204, and then the outward pulling of the placement disc 205 is realized, at this time, the rolling wheels 207 rotating on the two connecting blocks 206 roll between the first guide rail 204, until the rear connecting block 206 abuts between the bottom plate 201, thereby effectively increasing the sliding distance of the placement disc 205 outward, and the placement disc 205 slides out from the inside of the refrigeration box 1 together with the compressor, so that the operator can repair, improve the repair efficiency;

[0042] When it is necessary to take the blood bag on the top shelf 401, only need to press the drive rod 503 on the shelf 401, and then the drive rod 503 slides along the second guide rod 504, and compresses the fifth extension spring 505, the drive rod 503 extrudes the triangular groove on the limiting block 501, and then drives the limiting block 501 to extrude the fourth extension spring 502 downward, and no longer engages with the limiting hole 506, so that the shelf 401 can be pulled, which can effectively fix the shelf 401 and improve its stability. The shelf 401 is pulled out along the side wall, the sliding block 402 on the side of the shelf 401 and the sealing block 403 slide between the second guide rail 406, while continuously pulling the shelf 401 out along the side wall, the sealing block 403 first slides from the second guide rail 406 to the third guide rail 604 and abuts against the drive block 602, at this time the position of the sealing block 403 no longer changes, and the shelf 401 is continuously pulled out, so that the sealing block 403 slides between the first guide rod 404, and the third extension spring 405 is compressed, until the sliding block 402 slides from the second guide rail 406 to the third guide rail 604, at this time the end of the shelf 401 is completely pulled out from the side wall of the refrigerator 1, at this time the shelf 401 is only fixed between the two drive blocks 602 on both sides by the sliding block 402, and then the shelf 401 is pulled downward, the drive block 602 slides downward along the third guide rod 601 and compresses the sixth extension spring 603, when pulled to the appropriate position, the blood bag is taken out, and the shelf 401 is slowly driven, the drive block 602 is driven to slide to the initial position under the reset action of the sixth extension spring 603, and then the shelf 401 is released, the shelf 401 slides to the second guide rail 406 under the reset action of the third extension spring 405, the sliding block 402 slides from the third guide rail 604 to the second guide rail 406, when the third extension spring 405 is completely reset, the shelf 401 is completely pushed into the refrigerator 1, at the same time, the front end of the shelf 401 abuts against the side wall of the refrigerator 1, the sealing block 403 abuts against the gap at the end of the second guide rail 406, and the rubber strip 408 is arranged on the side wall abutting against the front end of the shelf 401 and the second guide rail 406, the rubber ring 407 is arranged at the contact position of the sealing block 403 and the second guide rail 406, so that when the shelf 401 is completely reset, the sealing property of the cavity in the refrigerator 1 is effectively ensured, and the problem that the storage effect is poor when the cabinet door is completely opened to take a blood bag is avoided.

[0043] It will be obvious to a person skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments and can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims to the identity of the reference signs therein.

[0044] Furthermore, it should be understood that although the description is made on the basis of the embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A blood extraction holding case characterized by comprising: Including the refrigerator (1), the refrigerator (1) is equipped with a sliding structure (2) for facilitating the maintenance of internal elements;The refrigerator (1) is connected with a storage structure (4);The refrigerator (1) is provided with a lifting structure (6) for adjusting the height of the storage structure (4);The storage structure (4) is provided with a limiting structure (5) for fixing the storage structure (4);The storage structure (4) is provided with a fixing structure (3) for placing labels; The sliding structure (2) comprises a bottom plate (201), the refrigerator (1) is slidably connected with the bottom plate (201), the bottom plate (201) is fixedly connected with a connecting plate (202), the connecting plate (202) is slidably connected to the refrigerator (1), the first extension spring (203) is fixedly connected between the connecting plate (202) and the refrigerator (1), the refrigerator (1) is slidably connected with a tray (205), the bottom end of the tray (205) is fixedly connected with two connecting blocks (206), two connecting blocks (206) are rotatably connected with a roller (207), the roller (207) is rollingly connected to a first guide rail (204), the first guide rail (204) is fixedly connected to the bottom plate (201); The storage structure (4) comprises a storage rack (401), the refrigerator (1) is slidably connected with the storage rack (401), the storage rack (401) is fixedly connected with a sliding block (402), the inner wall of the refrigerator (1) is fixedly connected with a second guide rail (406), the second guide rail (406) is slidably connected with the sliding block (402), the side wall of the storage rack (401) is fixedly connected with a first guide rod (404), the first guide rod (404) is slidably connected with a sealing block (403), the third extension spring (405) is fixedly connected between the sealing block (403) and the storage rack (401), the third extension spring (405) penetrates the first guide rod (404); The lifting structure (6) comprises a third guide rod (601), two third guide rods (601) are fixedly connected side by side on the side wall of the refrigerator (1), two driving blocks (602) are slidably connected on the two third guide rods (601) respectively, the driving block (602) is slidably connected to the refrigerator (1), the sixth extension spring (603) is fixedly connected between the two driving blocks (602), the sixth extension spring (603) is fixedly connected between the bottom driving block (602) and the refrigerator (1), the third guide rail (604) is fixedly connected on the driving block (602); Pull out the shelf (401), the sliding block (402) on the side of the shelf (401) and the sealing block (403) slide between the second guide rail (406), the sealing block (403) slides from the second guide rail (406) to the third guide rail (604), and the sealing block (403) is in contact with the driving block (602), at this time the position of the sealing block (403) does not change, continue to pull out the shelf (401), make the sealing block (403) slide between the first guide rod (404), at the same time compress the third telescopic spring (405), until the sliding block (402) slides from the second guide rail (406) to the third guide rail (604), at this time the end of the shelf (401) is completely pulled out from the side wall of the refrigerator (1), at this time the shelf (401) is fixed between the two driving blocks (602) on both sides through the sliding block (402), and then the shelf (401) is pulled down, the driving block (602) is driven to slide down along the third guide rod (601), and the sixth telescopic spring (603) is compressed, and the blood bag is taken out after being pulled to the appropriate position.

2. The blood extraction and preservation case of claim 1, wherein: The refrigerator (1) is fixedly connected with a first rotating shaft (209), and the first rotating shaft (209) is rotatably connected with a protective door (208).

3. A blood extraction and preservation case according to claim 2, wherein: The sealing block (403) is provided with a rubber ring (407), and the refrigerator (1) is provided with a rubber strip (408).

4. The blood extraction and preservation case of claim 3, wherein: The limiting structure (5) comprises a driving rod (503), the shelf (401) is slidably connected with the driving rod (503), the shelf (401) is fixedly connected with a second guide rod (504), the driving rod (503) is slidably connected with the second guide rod (504), the fifth telescopic spring (505) is fixedly connected between the driving rod (503) and the shelf (401), the limiting block (501) is slidably connected to the shelf (401), the fourth telescopic spring (502) is fixedly connected between the limiting block (501) and the shelf (401), and the driving rod (503) is slidably connected with the limiting block (501).

5. A blood extraction and preservation case according to claim 4, wherein: The section of the driving rod (503) is in "L" shape structure, the driving rod (503) is slidably connected between the triangular sliding grooves on the limiting block (501), and the limiting block (501) is clamped in the limiting hole (506) formed in the refrigerator (1).

6. The blood extraction and preservation case of claim 1, wherein: The section of the driving block (602) is in "U" shape structure, and the end of the third guide rail (604) is inclined.

7. The blood extraction and preservation case of claim 1, wherein: The fixing structure (3) comprises a transparent plate (301), the transparent plate (301) is rotatably connected to the shelf (401) through a rotating shaft, the abutting block (302) is slidably connected to the transparent plate (301), the second telescopic spring (303) is fixedly connected between the abutting block (302) and the transparent plate (301), and the abutting block (302) is clamped in the groove on the shelf (401).

8. A blood extraction and preservation case according to claim 7, wherein: The transparent plate (301) is rotationally connected with a second rotating shaft (305), the second rotating shaft (305) is rollingly connected with a first sliding groove (306), the first sliding groove (306) is arranged on a connecting rod (304), the connecting rod (304) is provided with a second sliding groove (308), the second sliding groove (308) is rollingly connected with a third rotating shaft (307), and the third rotating shaft (307) is rotationally connected with the storage rack (401).

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