A cell freezing rack

Abstract

The present application discloses a cell freezing rack, which relates to the field of cell freezing technology. The rack includes a frame body, which includes a top plate, a bottom plate, a back plate, four brackets and multiple partitions. Cryopreservation boxes are slidably mounted on the bottom plate and the partitions. Side plates are fixedly arranged on the brackets. The side plates are provided with locking mechanisms. The locking mechanisms include two push rods, a locking hook and a first elastic member. The push rod is slidably arranged in the side plates. The locking hook is arranged at the end of the push rod. A locking groove is opened on the side wall of the cryopreservation box. The first elastic member is arranged on the locking hook. The present application uses multiple locking mechanisms to fix multiple cryopreservation boxes, so that a single cryopreservation box can be unlocked and the remaining cryopreservation boxes will not slide. Pressing the push rod drives the locking hook to slide out of the locking groove to unlock the cryopreservation box. When the cryopreservation tube is stored and retrieved, the cryopreservation box is pushed into the frame body. The first elastic member pushes the locking hook into the locking groove to fix the cryopreservation box, facilitating safe and quick storage and retrieval of the cryopreservation tube.

Description

Technical Field

[0001] The present application relates to the technical field of cell freezing, and in particular to a cell freezing rack. Background Art

[0002] Cryopreservation is a method of preserving cells by subjecting them to extremely low temperatures, halting their metabolism and growth, thereby enabling long-term storage. The cryopreservation process typically involves suspending cells in a cryopreservation solution containing a protective agent and then gradually cooling them to liquid nitrogen temperature (approximately -196°C).

[0003] Currently, referring to the patent publication number CN205770965U, a cell freezing rack includes a rack body, a cryobox is slidably placed on the partition of the rack body, and a plurality of cryotubes are stored in the cryobox. A locking hook is installed in the rack body, and the locking hook slides vertically through the plurality of partitions. The locking hook blocks the cryobox so that the cryobox is stably placed in the rack body. When the cryotubes need to be stored or accessed, the rack body needs to be removed from the liquid nitrogen tank first, and then the locking hook is slid out of the rack body. After the cryobox is pulled out, the cryotubes can be stored or accessed. After the cryotubes are stored or accessed, the cryobox needs to be pushed into the rack body first, and then the locking hook is passed through the plurality of partitions.

[0004] Each time a cryobox is accessed, the locking hook must be removed and then reinserted. When the rack contains a large number of partitions, the hook must be reinserted through multiple partitions. This can easily cause the hook to rub against the partitions, making it difficult to reinsert the hook into the rack and increasing the time required to access the cryotubes. Furthermore, when the locking hook is removed, all cryoboxes lose their restraints, allowing them to slide on the partitions, which can damage or even cause the cryotubes to fall. Summary of the Invention

[0005] In order to facilitate safe and rapid storage and retrieval of cryopreservation tubes, the present application provides a cell freezing rack.

[0006] The cell freezing rack provided in this application adopts the following technical solution:

[0007] The cam is secured to the bottom of the shelf and has a lock mechanism which allows the cam to lock onto the shelf, the lock mechanism then allowing the cam to lock onto the shelf.

[0008] By adopting the above technical solution, multiple locking mechanisms are used to fix multiple freezing boxes separately. When it is necessary to store or access freezing tubes, a single freezing box can be unlocked so that the remaining freezing boxes will not slide. By pressing the two push rods at the same time, the two push rods drive the two locking hooks to slide out of the two locking grooves, and the freezing box can be unlocked and pulled out. When the freezing tubes are stored or accessed, the freezing box is pushed into the frame body, and the first elastic member pushes the locking hooks into the locking grooves to fix the freezing box, thereby facilitating safe and quick storage and access to the freezing tubes.

[0009] Preferably, a second elastic member is provided on the back plate, and a push block is provided on the end of the second elastic member away from the back plate, and the push block abuts against the freezing box away from the side wall of the second elastic member. A second elastic member is provided on the back plate, and a push block is provided on the end of the second elastic member away from the back plate, and the push block abuts against the freezing box away from the side wall of the second elastic member.

[0010] By adopting the above technical solution, when the freezing box is fixed, the freezing box squeezes the second elastic member through the push block. When the freezing box is unlocked, the second elastic member releases its elastic potential energy and pushes the freezing box out of the rack through the push block, thereby facilitating quick access to the freezing tubes.

[0011] Preferably, the ends of the two locking hooks that are close to each other and located on the side away from the back plate are both formed with a first chamfer, and the side wall of the freezing box is provided with a guide groove that is connected to the locking groove.

[0012] By adopting the above technical solution, when fixing the cryobox, the cryobox is pushed to slide toward the back plate. When the cryobox contacts the locking hook, the locking hook first enters the guide groove of the cryobox through the first chamfer, and then enters the locking groove through the guide groove, thereby automatically fixing the cryobox.

[0013] Preferably, a box lid is rotatably provided on the freezing box, a trigger block is provided on the bottom plate and the partition, a slide groove is opened on the bottom wall of the freezing box, and a pull block is slidably provided on the freezing box in the slide groove, the trigger block is located in the slide groove and on the side of the pull block away from the back plate, a third elastic member is provided on the side of the pull block away from the trigger block, the third elastic member is connected to the end wall of the freezing box located in the slide groove, a driving gear is rotatably provided in the freezing box, and a driven gear meshing with the driving gear is provided at the rotating part of the box lid, the diameter of the driven gear is larger than the diameter of the driving gear, a pull rope is provided on the pull block, and the end of the pull rope is fixedly connected to the rotating shaft of the driving gear.

[0014] By adopting the above technical solution, a box lid is installed on the freezing box, so that the freezing tubes in the freezing box are not easily dropped out of the freezing box. After the freezing box is unlocked by using the locking mechanism, the freezing box is pulled outward, and the freezing box drives the pulling block to move and contact the triggering block. As the freezing box continues to move outward, the pulling block slides in the slide groove and rotates by pulling the driving gear through the pull rope. At the same time, the pulling block squeezes the third elastic member, causing the third elastic member to shrink and deform, and the driving gear drives the box lid to rotate through the driven gear, so that after the freezing box is pulled out, the box lid can automatically flip open, making it easy to store and access the freezing tubes; after the freezing tubes are stored and accessed, the freezing box is released, the third elastic member releases its elastic potential energy and pushes the freezing box to slide into the frame body, the third elastic member pushes the pulling block to move and reset, and the box lid automatically flips and closes under the action of gravity.

[0015] Preferably, limiting grooves are provided on the two opposite side walls of the freezing box, a limiting pin is slidably provided in the side panel, and a fourth elastic member is provided on the partition plate for pushing the limiting pin to be inserted into the limiting groove.

[0016] By adopting the above technical solution, when the freezing box is pulled out and the box lid is flipped open, the freezing box drives the limit groove to move to the limit pin, and the fourth elastic member pushes the limit pin to be inserted into the limit groove, so that the freezing box can be limited and fixed, which is convenient for the staff to store and retrieve the freezing tubes; when the freezing tubes are stored and retrieved, the limit pin is pulled outward, and the limit pin is disengaged from the limit groove, so that the limit on the freezing box can be released. At this time, the third elastic member can push the freezing box to slide into the frame body.

[0017] Preferably, the freezing box is provided with a plurality of storage holes at equal intervals along its length and width directions, and the freezing tubes are placed in the storage holes. The freezing box is slidably provided with a supporting plate at the bottom of the plurality of storage holes, and a friction ring is provided on the outer peripheral side of the supporting plate, and the friction ring abuts against the inner wall of the freezing box in the storage hole. The freezing box is located below the supporting plate and is provided with a translation bar along its own length direction. The translation bar is slidably provided in the freezing box along the width direction of the freezing box, and the end of the translation bar away from the back plate passes through the freezing box, and the translation bar is vertically extended. A first top column is slidingly provided, and a plurality of the first top columns are arranged at intervals along the length direction of the freezing box and respectively correspond to a plurality of supporting plates. The freezing box is located below the translation bar and is provided with a lifting bar along its own width direction. A plurality of the lifting bars are arranged at intervals along the length direction of the freezing box, and a plurality of second top columns are provided on the top wall of each lifting bar. A plurality of buttons are arranged at intervals on the freezing box along its own length direction. The plurality of buttons are respectively connected to the plurality of lifting bars through a plurality of transmission components, and the buttons drive the lifting bars to move up and down through the transmission components.

[0018] By adopting the above technical solution, when storing the cryogenic tubes, first place the cryogenic tubes in the storage hole of the cryogenic box, with the bottom of the cryogenic tubes against the supporting plate, press the cryogenic tubes downward, and the cryogenic tubes push the supporting plate to slide downward. At this time, the part of the top of the cryogenic tube exposed from the cryogenic box is small, which is convenient for placing another adjacent cryogenic tube; when it is necessary to take a specified cryogenic tube, first move the translation bar to the bottom of the specified cryogenic tube, and then press the button corresponding to the row of the specified cryogenic tube. The button drives the lifting bar to rise through the transmission assembly, and the lifting bar drives the first top column to rise through the second top column, and the first top column drives the supporting plate to rise, so that the specified cryogenic tube moves upward, which is convenient for taking the specified cryogenic tube.

[0019] Preferably, the transmission assembly includes a first rack, a second rack, a transmission gear and an elastic reset member, the button is slidably arranged in the freezing box along the vertical direction, the first rack is fixedly arranged in the middle of the bottom wall of the button along the vertical direction, the elastic reset member is arranged in the freezing box and is located below the first rack, the transmission gear is rotatably arranged in the freezing box and meshes with the first rack, the second rack is slidably arranged in the freezing box along the horizontal direction and meshes with the transmission gear, the second rack is located below the lifting bar, and the end of the second rack is formed with a second chamfer for lifting the lifting bar to move upward.

[0020] By adopting the above technical solution, when the button is pressed downward, the button drives the first rack to move downward and squeezes the elastic reset member, the first rack drives the transmission gear to rotate, the transmission gear drives the second rack to move toward the translation bar, and the second rack lifts the lifting bar through the second chamfer, thereby causing the lifting bar to move upward; when the button is released, the elastic reset member pushes the button to move upward and reset, the first rack moves upward and drives the second rack to move and reset through the transmission gear, and the lifting bar moves downward and reset under the action of gravity.

[0021] Preferably, the freezing box is provided with a lifting frame slidingly arranged above the translation bar, the lifting frame is located below the supporting plate, a plurality of lifting sleeves corresponding to the plurality of supporting plates are provided on the top wall of the lifting frame, the top wall of the lifting sleeve abuts against the bottom wall of the supporting plate, and pull plates are provided on both sides of the lifting frame in the freezing box for lifting and lowering, and the pull plates are fixedly connected to the lifting frame.

[0022] By adopting the above technical solution, when all the cryogenic tubes in the cryogenic box need to be taken out, the pull plate is pulled upward, the pull plate drives the lifting frame to move upward, the lifting member drives multiple lifting sleeves to move upward, and the multiple lifting sleeves drive multiple supporting plates to move upward, so that all the cryogenic tubes move upward, making it easier to take out all the cryogenic tubes.

[0023] Preferably, a third top column is provided in the lifting sleeve for lifting and sliding, the top wall of the third top column abuts against the bottom wall of the supporting plate, and the top wall of the first top column abuts against the bottom wall of the third top column.

[0024] By adopting the above technical solution, when it is necessary to take a specified cryogenic tube, the first top column drives the third top column to move upward, and the third top column drives the supporting plate to move upward, so that the lifting rack will not interfere with the taking of the specified cryogenic tube.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. Multiple locking mechanisms are used to secure multiple cryoboxes separately. When cryotubes need to be stored or retrieved, a single cryobox can be unlocked to prevent the remaining cryoboxes from sliding. By pressing the two push rods at the same time, the two push rods drive the two locking hooks to slide out of the two locking grooves, unlocking the cryobox and withdrawing the cryobox. After the cryotubes are stored or retrieved, the cryobox is pushed into the rack body. The first elastic member pushes the locking hooks into the locking grooves to secure the cryobox, thereby facilitating safe and quick storage and retrieval of cryotubes.

[0027] 2. With the help of the box cover, the box cover is installed on the freezing box, so that the cryogenic tubes in the freezing box are not easily dropped out of the freezing box. After the freezing box is unlocked by using the locking mechanism, the freezing box is pulled outward, and the freezing box drives the pulling block to move and contact the trigger block. As the freezing box continues to move outward, the pulling block slides in the slide groove and rotates the driving gear through the pull rope. At the same time, the pulling block squeezes the third elastic member, causing the third elastic member to contract and deform. The driving gear drives the box cover to rotate through the driven gear, so that after the freezing box is pulled out, the box cover can be automatically flipped open, making it easy to store and take out the cryogenic tubes.

[0028] 3. When storing the cryogenic tubes through the support plate, first place the cryogenic tubes into the storage holes of the cryogenic box, with the bottoms of the cryogenic tubes against the support plate, press the cryogenic tubes downward, and the cryogenic tubes push the support plate to slide downward. At this time, the top of the cryogenic tube is exposed to a smaller part of the cryogenic box, which makes it easier to place another adjacent cryogenic tube. When you need to take a specified cryogenic tube, first move the translation bar to the bottom of the specified cryogenic tube, and then press the button corresponding to the row of the specified cryogenic tube. The button drives the lifting bar to rise through the transmission assembly, and the lifting bar drives the first top column to rise through the second top column, and the first top column drives the support plate to rise, so that the specified cryogenic tube moves upward, making it easier to take the specified cryogenic tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of the cell freezing rack in this application;

[0030] Figure 2 This is a schematic diagram of the structure of the cell freezing rack in this application, highlighting the guide block;

[0031] Figure 3 The cell freezing rack of this application is a partial structural cross-sectional view highlighting the locking mechanism;

[0032] Figure 4 For this application Figure 3 A in the middle is an enlarged schematic diagram;

[0033] Figure 5 The cell freezing rack of this application is a cross-sectional view highlighting the structure of the pull block;

[0034] Figure 6 This is a schematic diagram of the cell freezing rack box lid being flipped open in this application;

[0035] Figure 7 A cross-sectional view of the freezing box of the cell freezing rack of this application;

[0036] Figure 8 For this application Figure 7 The enlarged schematic diagram of point B in the middle;

[0037] Figure 9 This is an exploded view of the freezing box of the cell freezing rack in this application;

[0038] Figure 10 The cell freezing rack of this application is a cross-sectional view highlighting a portion of the structure of the transmission component.

[0039] Figure numerals: 1, frame; 11, top plate; 12, bottom plate; 13, back plate; 14, bracket; 15, partition; 2, freezing box; 3, side plate; 4, locking mechanism; 41, push rod; 42, lock hook; 43, first elastic member; 5, lock groove; 6, second elastic member; 7, push block; 8, first chamfer; 9, guide groove; 10, box cover; 16, trigger block; 17, slide groove; 18, pull block; 19, third elastic member; 20, driving gear; 21, driven gear; 22, pull rope; 23, limit groove; 24, limit pin; 25, fourth elastic member; 26, storage hole ; 27. Support plate; 28. Friction ring; 29. ​​Translation bar; 30. First top column; 31. Lifting bar; 32. Second top column; 33. Button; 34. Transmission assembly; 341. First rack; 342. Second rack; 343. Transmission gear; 344. Elastic reset member; 35. Second chamfer; 36. Lifting frame; 37. Lifting sleeve; 38. Pull plate; 39. Third top column; 40. Guide block; 41. First avoidance groove; 42. Second avoidance groove; 45. Turntable; 46. Handle; 47. Baffle; 50. Hook; 52. Storage plate; 53. Outward expansion groove. DETAILED DESCRIPTION

[0040] The following is combined with Figures 1-10 This application is described in further detail.

[0041] The embodiment of the present application discloses a cell freezing rack.

[0042] Reference Figure 1 A cell freezing rack includes a rack body 1, which is composed of a top plate 11, a bottom plate 12, a back plate 13, four brackets 14, and a plurality of partitions 15. The four brackets 14 are fixedly connected to the top plate 11, the bottom plate 12, the back plate 13, and the partitions 15. The top plate 11 is located directly above the plurality of partitions 15 and at the top of the brackets 14. The bottom plate 12 is located directly below the plurality of partitions 15 and at the bottom of the brackets 14. The back plate 13 is located on one side of the top plate 11, the bottom plate 12, and the partitions 15, and a hook 50 is fixedly mounted on the back plate 13. A plurality of side plates 3 are fixedly mounted on the brackets 14. Each pair of side plates 3 is parallel to each other and located on opposite sides of the partition 15 and the bottom plate 12. A cryobox 2 is slidably mounted on each of the partitions 15 and the bottom plate 12, and the cryobox 2 is located between the two side plates 3.

[0043] Reference Figure 1 and Figure 2A guide block 40 is fixedly mounted on the side of the two side panels 3 that is close to each other and located at the end away from the back panel 13. Guide grooves 9 are formed along the length of both side walls of the freezing box 2 in the width direction, and the guide blocks 40 are located in the guide grooves 9. The guiding effect of the guide blocks 40 and the guide grooves 9 allows the freezing box 2 to slide stably within the frame 1.

[0044] Reference Figure 3 and Figure 4 Each side panel 3 corresponding to each base panel 12 and partition panel 15 is provided with a locking mechanism 4. The locking mechanism 4 comprises two push rods 41, a locking hook 42, and a first elastic member 43. The two push rods 41 slide horizontally through the ends of the two side panels 3 adjacent to the back panel 13. The two push rods 41 are staggered vertically, and the ends of the two push rods 41 facing away from each other are both located outside the frame 1. The two locking hooks 42 are fixedly mounted on the adjacent ends of the two push rods 41 and on the side facing away from the back panel 13. The two first elastic members 43 are respectively fixedly mounted on the side walls of the two locking hooks 42 facing away from each other. The ends of the two first elastic members 43 facing away from the locking hooks 42 are respectively fixedly connected to the two side panels 3. In the present application, the first elastic member 43 may optionally be a spring.

[0045] The two locking hooks 42 are each formed with a first chamfer 8 at the end facing away from the push rod 41 and on the side closest to each other. The locking hooks 42 are coplanar with the guide slot 9, and a locking slot 5 is defined within the cryobox 2 and communicates with the guide slot 9. When the cryobox 2 slides toward and approaches the back plate 13, it first abuts the first chamfers 8 of the two locking hooks 42. The first chamfers 8 act to move the two locking hooks 42 away from each other. The locking hooks 42 compress the first elastic member 43, causing it to elastically contract and allow the locking hooks 42 to enter the guide slot 9. A first relief slot 41 is defined on the end wall of the cryobox 2 near the back plate 13. When the cryobox 2 moves to abut the back plate 13, the push rod 41 enters the first relief slot 41, causing the locking hooks 42 to move to the locking slot 5. The first elastic member 43 releases its elastic potential energy, pushing the locking hooks 42 into the locking slot 5, thereby automatically securing the cryobox 2.

[0046] Reference Figure 4 and Figure 5 Two second elastic members 6 are fixedly mounted on the back plate 13. Push blocks 7 are fixedly mounted on the ends of the two second elastic members 6 away from the back plate 13. The push blocks 7 are slidably mounted on the partition 15 and the bottom plate 12. Two second avoidance grooves 42 are defined on the end wall of the cryobox 2 near the back plate 13. When the cryobox 2 moves closer to the back plate 13, the push blocks 7 enter the second avoidance grooves 42. The push blocks 7 push the second elastic members 6 to deform and contract. When the cryobox 2 is secured by the locking mechanism 4, the second elastic members 6 store elastic potential energy.

[0047] By pressing the two push rods 41 simultaneously in the direction of approaching each other, the push rod 41 drives the locking hook 42 to move and fall off the locking groove 5, thereby releasing the lock of the freezing box 2. At this time, the second elastic member 6 releases its elastic potential energy and drives the push block 7 to move. The push block 7 drives the freezing box 2 to move away from the back plate 13, so that the freezing box 2 can be automatically ejected.

[0048] Multiple locking mechanisms 4 are used to secure multiple cryoboxes 2. When a cryotube needs to be stored or retrieved, a single cryobox 2 can be unlocked to prevent the remaining cryoboxes 2 from sliding. After the cryotubes are stored or retrieved, the cryobox 2 is pushed into the rack 1. The first elastic member 43 pushes the locking hook 42 into the locking slot 5, securing the cryobox 2. This allows for safe and quick storage and retrieval of cryotubes.

[0049] Reference Figure 5 and Figure 6 A lid 10 is pivotally mounted on the top of the freezing box 2, away from the back plate 13. A storage plate 52 is detachably fixedly mounted inside the freezing box 2. The storage plate 52 has multiple storage holes 26 spaced evenly along its length and width, and the multiple storage holes 26 are all located below the lid 10. Cryogenic tubes are placed in the storage holes 26. When the cryogenic tubes are not needed, the lid 10 is closed, thereby preventing the freezing box 2 from falling out of the freezing box 2.

[0050] Reference Figure 5 Two trigger blocks 16 are fixedly mounted on the top walls of both the bottom plate 12 and the partition 15. Two chute slots 17 are defined along the bottom wall of the cryobox 2, extending along its width. The chute slots 17 extend along the length of the cryobox 2, and the trigger blocks 16 are positioned within the chute slots 17. A pull block 18 is slidably mounted within the chute slots 17, located on the side of the trigger block 16 that is closer to the back plate 13. A third elastic member 19 is mounted within the chute slots 17, located on the side of the pull block 18 that is further away from the trigger block 16. One end of the third elastic member 19 abuts the pull block 18, while the other end abuts the end wall of the chute slot 17. In the present application, the third elastic member 19 can be a spring.

[0051] Two drive gears 20 are rotatably mounted on the side of the cryostat 2 near the back plate 13. Driven gears 21 are fixedly mounted on both sides of the rotating portion of the lid 10. The two driven gears 21 mesh with the two drive gears 20, respectively, and the diameter of the driven gears 21 is larger than that of the drive gears 20. Two rotating wheels 45 are rotatably mounted on the side of the cryostat 2 away from the back plate 13. A pull rope 22 is fixedly mounted on each pull block 18. The pull rope 22 passes through the rotating wheel 45 and is wrapped around the rotating shaft of the driven gear 21.

[0052] A handle 46 is fixedly installed on the end wall of the freezing box 2 away from the back plate 13. When the freezing box 2 is unlocked, the freezing box 2 is pulled outward by the handle 46, and the freezing box 2 drives the pulling block 18 to move. When the pulling block 18 moves and hits the trigger block 16, the pulling block 18 stops moving. As the freezing box 2 continues to move, the pulling block 18 moves relative to the freezing box 2 toward the back plate 13, and the pulling block 18 squeezes the third elastic member 19 and causes the third elastic member 19 to shrink and deform. The pulling block 18 moves and pulls the driving gear 20 to rotate through the pull rope 22, and the driving gear 20 then drives the box cover 10 to rotate through the driven gear 21, so that when the freezing box 2 is pulled outward, the box cover 10 can automatically rotate and open.

[0053] Reference Figure 2 and Figure 3 Limiting grooves 23 are provided on opposite side walls of the freezing box 2. A limiting pin 24 is slidably mounted in the side panel 3 in a direction perpendicular to the movement of the freezing box 2. A baffle 47 is fixedly mounted on the end of the limiting pin 24 located outside the frame 1. A fourth elastic member 25 is sleeved on the end of the limiting pin 24 located outside the frame 1. The ends of the fourth elastic member 25 are respectively fixedly connected to the baffle 47 and the outer wall of the side panel 3. In the present application, the fourth elastic member 25 can be a spring, and the fourth elastic member 25 pulls the limiting pin 24 toward the inside of the frame 1 through the baffle 47.

[0054] When the freezing box 2 is pulled outward and the box cover 10 is rotated to open, the freezing box 2 drives the limit groove 23 to move to the limit pin 24, and the fourth elastic member 25 drives the limit pin 24 to move and be inserted into the limit groove 23 through the baffle 47, thereby positioning the freezing box 2 and allowing the box cover 10 to remain open and rotate, making it convenient for staff to store and retrieve the cryopreservation tubes.

[0055] When the cryopreservation tubes are stored and retrieved, the two baffles 47 are pulled outward, and the baffles 47 drive the limit pin 24 to move out of the limit groove 23 and release the limit fixation of the cryopreservation box 2. The third elastic member 19 releases its elastic potential energy and pushes the cryopreservation box 2 toward the back plate 13 through the pull block 18 and the trigger block 16. The pull rope 22 changes from a taut state to a relaxed state, and the cover automatically flips over and closes under the action of gravity.

[0056] Reference Figure 7 and Figure 8 The storage plate 52 is located in the middle of the storage hole 26 and has an outwardly expanded groove 53. A support plate 27 is mounted within each outwardly expanded groove 53, sliding along the axis of the storage hole 26. A friction ring 28 is fixedly mounted on the outer sidewall of the support plate 27, abutting the inner wall of the outwardly expanded groove 53. When a cryogenic tube is placed in the storage hole 26, the support plate 27 supports the cryogenic tube. The friction ring 28 increases the friction between the support plate 27 and the inner wall of the storage hole 26, preventing the support plate 27 from moving within the storage hole 26 when the cryogenic tube is placed on the support plate 27.

[0057] When a cryotube is placed in the storage hole 26, the top of the cryotube will protrude from the storage plate 52. Since the staff need to wear thick antifreeze gloves, when another cryotube needs to be placed, the already placed cryotube will interfere with the staff's antifreeze gloves, making it difficult to place the adjacent cryotube. At this time, the already placed cryotube is pressed downward, and the cryobox 2 pushes the support plate 27 to slide downward, reducing the portion of the cryotube's top protruding from the cryobox 2, making it easier to place the next adjacent cryotube.

[0058] Reference Figure 8 and Figure 9 A lifting frame 36 is installed in the cryopreservation box 2 below the multiple supporting plates 27 in a manner that can be lifted and slid. A plurality of lifting sleeves 37 are fixedly installed on the top wall of the lifting frame 36. The plurality of lifting sleeves 37 correspond one-to-one to the multiple supporting plates 27 and are located directly below the supporting plates 27. Two pull plates 38 are fixedly installed on the lifting frame 36. The pull plates 38 slide through the storage plates 52, and the top ends of the pull plates 38 extend above the storage plates 52. When the cryopreservation tubes need to be removed, the two pull plates 38 are pulled upward. The two pull plates 38 drive the plurality of lifting sleeves 37 to move upward through the lifting frame 36. The top ends of the lifting sleeves 37 abut against the bottom walls of the supporting plates 27 and push the supporting plates 27 upward, thereby increasing the portion of the cryopreservation tube tops that protrudes from the cryopreservation box 2, making it easier to remove the cryopreservation tubes.

[0059] A translation bar 29 is installed within the cryobox 2, below the lifting frame 36, along the length of the cryobox 2. The end of the translation bar 29, away from the back plate 13, passes through the cryobox 2 and extends outside the cryobox 2. The translation bar 29 is slidably mounted within the cryobox 2 along the width of the cryobox 2. A plurality of first posts 30 are installed within the translation bar 29 at intervals along its length. The first posts 30 are slidably mounted within the translation bar 29 in a vertical direction. The plurality of first posts 30 are located directly below the plurality of support plates 27. A third post 39 is slidably mounted within the lifting sleeve 37 along its axis. The top wall of the third post 39 abuts the bottom wall of the support plate 27, and the bottom wall of the third post 39 abuts the top wall of the first post 30.

[0060] A lifting bar 31 is installed within the freezing box 2, below the translation bar 29, along the width of the freezing box 2. The lifting bar 31 is vertically mounted within the freezing box 2 for lifting and sliding movement. Multiple lifting bars 31 are evenly spaced along the length of the freezing box 2. Multiple second top posts 32 are fixedly mounted on the top wall of the lifting bar 31 at even intervals along its length. The top walls of the second top posts 32 abut against the bottom walls of the first top posts 30. The top ends of the first, second, and third top posts 30, 32, and 39 are all formed with annular chamfers. Limiting rings are installed on the outer walls of the third and first top posts 39, 30, to limit the lifting distance of the third and first top posts 39, 30.

[0061] Reference Figure 9 and 10 A button 33 is installed on the top wall of the freezing box 2 so as to be lifted and slidable in the vertical direction. A plurality of buttons 33 are installed at intervals along the length direction of the freezing box 2. The plurality of buttons 33 correspond to the plurality of lifting bars 31 one by one. The plurality of buttons 33 are connected to the plurality of lifting bars 31 through a plurality of transmission components 34. When the button 33 is pressed, the button 33 can drive the lifting bars 31 to move upward through the transmission component 34.

[0062] When it is necessary to take a specified single cryogenic tube, first move the translation bar 29 to the bottom of the specified cryogenic tube, and then press the button 33 on the lifting bar 31 corresponding to the specified cryogenic tube. The button 33 drives the lifting bar 31 to rise through the transmission assembly 34. The lifting bar 31 drives the first top column 30 to rise through the second top column 32. The first top column 30 drives the third top column 39 to rise. The third top column 39 drives the support plate 27 to rise, so that the part of the top of the specified cryogenic tube extending out of the cryogenic box 2 is increased, thereby facilitating the removal of the specified single cryogenic tube.

[0063] Reference Figure 7 and 10 Specifically, the transmission assembly 34 includes a first rack 341, a second rack 342, a transmission gear 343, and an elastic return member 344. The first rack 341 is vertically fixedly mounted in the middle of the bottom wall of the button 33. The transmission gear 343 is rotatably mounted within the cryostat 2. The bottom end of the first rack 341 meshes with the transmission gear 343. The second rack 342 is horizontally slidably mounted within the cryostat 2. One end of the second rack 342 meshes with the transmission gear 343. A second chamfer 35 is formed on the top wall of the other end of the second rack 342. The bottom wall of the lifting bar 31 abuts against the top wall of the second rack 342. The elastic return member 344 is mounted within the cryostat 2 and located below the first rack 341. Its two ends abut the bottom wall of the first rack 341 and the inner wall of the cryostat 2, respectively. In this application, the elastic return member 344 can be a spring.

[0064] When the button 33 is pressed downward, the button 33 drives the first rack 341 to move downward and squeeze the elastic reset member 344. The first rack 341 drives the transmission gear 343 to rotate. The transmission gear 343 drives the second rack 342 to move toward the translation bar 29. The second rack 342 lifts the lifting bar 31 through the second chamfer 35, thereby causing the lifting bar 31 to move upward. When the button 33 is released, the elastic reset member 344 pushes the button 33 upward and resets through the first rack 341. The first rack 341 moves upward and drives the second rack 342 to move and reset through the transmission gear 343. The lifting bar 31 can automatically move and reset under the action of gravity.

[0065] The cell freezing rack of the present embodiment is implemented as follows: when the cryopreservation box 2 moves to abut the back plate 13, the push rod 41 enters the first escape groove 41, the locking hook 42 moves to the locking groove 5, and the first elastic member 43 releases its elastic potential energy and pushes the locking hook 42 into the locking groove 5, thereby automatically securing the cryopreservation box 2. When the cryopreservation box 2 moves closer to the back plate 13, the push block 7 enters the second escape groove 42, and the cryopreservation box 2 is deformed and contracted by the push block 7. By simultaneously pressing the two push rods 41 toward each other, the push rods 41 drive the locking hook 42 to move out of the locking groove 5, thereby releasing the lock on the cryopreservation box 2. At this time, the second elastic member 6 releases its elastic potential energy and drives the push block 7 to move. The push block 7 drives the cryopreservation box 2 away from the back plate 13, allowing the cryopreservation box 2 to automatically eject. Multiple locking mechanisms 4 are used to secure multiple cryoboxes 2. When a cryotube needs to be stored or retrieved, a single cryobox 2 can be unlocked to prevent the remaining cryoboxes 2 from sliding. After the cryotubes are stored or retrieved, the cryobox 2 is pushed into the rack 1. The first elastic member 43 pushes the locking hook 42 into the locking slot 5, securing the cryobox 2. This allows for safe and quick storage and retrieval of cryotubes.

[0066] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A cell freezing rack, comprising a rack body (1), wherein the rack body (1) comprises a top plate (11), a bottom plate (12), a back plate (13), four brackets (14) and a plurality of partitions (15), wherein the brackets (14) are fixedly connected to the top plate (11), the bottom plate (12), the back plate (13) and the partitions (15), and a freezing box (2) is slidably mounted on the bottom plate (12) and the partitions (15), characterized in that: The bracket (14) is fixedly provided with side plates (3) on opposite sides of the partition (15) and the bottom plate (12), and the two side plates (3) in the horizontal direction are provided with a locking mechanism (4) for fixing the freezing box (2), the locking mechanism (4) comprising two push rods (41), a locking hook (42) and a first elastic member (43), the two push rods (41) are slidably arranged in the two side plates (3) along the vertical moving direction of the freezing box (2), the two locking hooks (42) are respectively arranged at the ends of the two push rods (41) close to each other, and locking grooves (5) are provided on the opposite side walls of the freezing box (2), the two first elastic members (43) are respectively arranged on the side walls of the two locking hooks (42) away from each other, the end of the first elastic member (43) away from the locking hook (42) abuts against the side plate (3), and the first elastic member (43) is used to push the locking hook (42) into the locking groove (5); The freezing box (2) is provided with a box cover (10) for rotation, the bottom plate (12) and the partition plate (15) are provided with a trigger block (16), a slide groove (17) is provided on the bottom wall of the freezing box (2), the freezing box (2) is provided with a pull block (18) for sliding in the slide groove (17), the trigger block (16) is located in the slide groove (17) and is located on the side of the pull block (18) away from the back plate (13), and a third elastic member ( 19), the third elastic member (19) is connected to the end wall of the freezing box (2) located in the slide groove (17), a driving gear (20) is rotatably provided in the freezing box (2), a driven gear (21) meshing with the driving gear (20) is provided at the rotating part of the box cover (10), the diameter of the driven gear (21) is larger than the diameter of the driving gear (20), a pull rope (22) is provided on the pulling block (18), and the end of the pull rope (22) is fixedly connected to the rotating shaft of the driving gear (20); The freezing box (2) is provided with a plurality of storage holes (26) at equal intervals along its length and width directions, and the freezing tubes are placed in the storage holes (26). The freezing box (2) is provided with a supporting plate (27) at the bottom of the plurality of storage holes (26) for sliding. The outer peripheral side of the supporting plate (27) is provided with a friction ring (28), and the friction ring (28) abuts against the inner wall of the freezing box (2) at the storage hole (26). The freezing box (2) is provided with a translation bar (29) below the supporting plate (27) along its length direction. The translation bar (29) is slidably provided in the freezing box (2) along the width direction of the freezing box (2). The end of the translation bar (29) away from the back plate (13) passes through the freezing box (2), and the translation bar (29) is provided along the vertical direction. A first top column (30) is provided for sliding in the direction of the freezing box (2), and a plurality of the first top columns (30) are provided at intervals along the length direction of the freezing box (2) and respectively correspond to a plurality of supporting plates (27). The freezing box (2) is located below the translation bar (29) and is provided with a lifting bar (31) along its own width direction. A plurality of the lifting bars (31) are provided at intervals along the length direction of the freezing box (2), and a plurality of second top columns (32) are provided on the top wall of each of the lifting bars (31). A plurality of buttons (33) are provided at intervals along the length direction of the freezing box (2), and the plurality of buttons (33) are respectively connected to the plurality of lifting bars (31) through a plurality of transmission components (34), and the buttons (33) drive the lifting bars (31) to move up and down through the transmission components (34).

2. A cell freezing rack according to claim 1, characterized in that: A second elastic member (6) is provided on the back plate (13), and a push block (7) is provided at one end of the second elastic member (6) away from the back plate (13), and the push block (7) abuts against the freezing box (2) away from the side wall of the second elastic member (6).

3. A cell freezing rack according to claim 1, characterized in that: The ends of the two locking hooks (42) that are close to each other and located on the side away from the back plate (13) are both formed with a first chamfer (8), and the side wall of the freezing box (2) is provided with a guide groove (9) that is connected to the locking groove (5).

4. A cell freezing rack according to claim 1, characterized in that: Limiting grooves (23) are provided on opposite side walls of the freezing box (2), a limiting pin (24) is slidably provided in the side plate (3), and a fourth elastic member (25) is provided on the partition (15) for pushing the limiting pin (24) to be inserted into the limiting groove (23).

5. The cell freezing rack according to claim 1, characterized in that: The transmission assembly (34) includes a first rack (341), a second rack (342), a transmission gear (343) and an elastic reset member (344); the button (33) is slidably arranged in the freezing box (2) along the vertical direction; the first rack (341) is fixedly arranged in the middle of the bottom wall of the button (33) along the vertical direction; the elastic reset member (344) is arranged in the freezing box (2) and is located below the first rack (341); the transmission gear (343) is rotatably arranged in the freezing box (2) and meshed with the first rack (341); the second rack (342) is slidably arranged in the freezing box (2) along the horizontal direction and meshed with the transmission gear (343); the second rack (342) is located below the lifting bar (31), and the end of the second rack (342) is formed with a second chamfer (35) for lifting the lifting bar (31) to move upward.

6. A cell freezing rack according to claim 5, characterized in that: The freezing box (2) is provided with a lifting frame (36) slidingly arranged above the translation bar (29), and the lifting frame (36) is located below the supporting plate (27). A plurality of lifting sleeves (37) corresponding to the plurality of supporting plates (27) are provided on the top wall of the lifting frame (36), and the top wall of the lifting sleeve (37) abuts against the bottom wall of the supporting plate (27). Pull plates (38) are provided on both sides of the lifting frame (36) in the freezing box (2) for lifting and lowering, and the pull plates (38) are fixedly connected to the lifting frame (36).

7. A cell freezing rack according to claim 6, characterized in that: A third top column (39) is provided in the lifting sleeve (37) for lifting and sliding. The top wall of the third top column (39) abuts against the bottom wall of the supporting plate (27), and the top wall of the first top column (30) abuts against the bottom wall of the third top column (39).

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