Door lock system for a cryogenic storage cabinet and cryogenic storage cabinet comprising same

Abstract

The utility model relates to a door lock system for low temperature preservation box and contain its low temperature preservation box belongs to low temperature preservation equipment technical field, that door lock system includes rotary handle lock, electromagnetic lock and controller, rotary handle lock includes lock core, handle installation subassembly, handle and position monitoring subassembly, handle includes rotary lock and handle part, and rotary lock is connected in handle installation subassembly to rotate between first position and second position, when rotary lock is located first position, rotary lock and lock core lock, when rotary lock is located second position, rotary lock and lock core are separated, position monitoring subassembly is used for monitoring whether rotary lock is located first position, controller and position monitoring subassembly and electromagnetic lock are connected communication respectively, to control electromagnetic lock to open the lock when monitoring that rotary lock is no longer located first position. The door lock system adopts rotary handle and electromagnetic lock linkage control, only needs to rotate handle when opening the door, and the operation is simple and convenient.

Description

Technical Field

[0001] This utility model belongs to the technical field of low-temperature preservation equipment, and in particular relates to a door lock system for a low-temperature preservation box and a low-temperature preservation box containing the system. Background Technology

[0002] Cryogenic storage boxes are widely used in fields requiring low-temperature preservation of biological samples, pharmaceuticals, reagents, and other items. Because the internal temperature of these boxes is extremely low, even below -80 degrees Celsius, the doors must be tightly locked after closing to maintain this temperature. Therefore, cryogenic storage boxes typically use rotary locking handles to ensure a secure door, such as the door handle assembly for ultra-low temperature chambers disclosed in patent CN221194651U. Currently, the traditional rotary locking handles used in cryogenic storage boxes typically employ mechanical locks for opening and closing. However, mechanical locks require a key, making operation cumbersome when frequently accessing items, especially when wearing gloves. Utility Model Content

[0003] To address the inconvenience of opening traditional rotary locking handle door locks used in existing cryogenic storage boxes, this utility model provides a door lock system for cryogenic storage boxes and a cryogenic storage box containing the system. The door lock system uses a rotary handle linked with an electromagnetic lock to achieve door opening control. To open the door, simply turn the handle; no key is required, making operation simple and convenient.

[0004] This utility model provides a door lock system for a cryogenic storage box, comprising:

[0005] Rotary handle lock, comprising:

[0006] The lock cylinder is installed in the body of the low-temperature storage box;

[0007] Handle mounting assembly, which is installed on the door of the cryogenic storage box;

[0008] A handle includes a rotating locking part rotatably connected to a handle mounting assembly, and a handle portion connected to the rotating locking part to drive the rotating locking part to rotate; the rotating locking part rotates relative to the handle mounting assembly between a first position and a second position, wherein when the rotating locking part is in the first position, the rotating locking part is locked with a lock cylinder, and when the rotating locking part is in the second position, the rotating locking part is disengaged from the lock cylinder;

[0009] A position monitoring component, which is installed between the rotary locking part and the handle mounting assembly, is used to monitor whether the rotary locking part is in a first position relative to the handle mounting assembly;

[0010] An electromagnetic lock is installed between the body and the door of the cryogenic storage box;

[0011] The controller is communicatively connected to the position monitoring component and the electromagnetic lock, respectively, to control the electromagnetic lock to unlock when the position monitoring component detects that the rotating locking part is no longer in the first position.

[0012] This technical solution, through the cooperation of the controller, the position monitoring component built into the rotary handle lock, and the electromagnetic lock, allows the unlocking process to be completed simply by turning the handle, without the need for a key. This makes the operation simple and convenient, especially when wearing gloves. Furthermore, the combination of the rotary handle lock and the electromagnetic lock ensures high security and makes the lock difficult to pry open.

[0013] In some embodiments, the position monitoring component includes a magnetic sensor communicatively connected to a controller and a magnet for generating a magnetic response with the magnetic sensor. The magnet is mounted on the rotary locking part, and the magnetic sensor is mounted on the handle mounting assembly. When the rotary locking part is in a first position, the magnet is located within the magnetic induction zone of the magnetic sensor to generate a magnetic response, causing the magnetic sensor to send a signal to the controller that the rotary locking part is in the first position. When the rotary locking part is in a second position, the magnet is located outside the magnetic induction zone of the magnetic sensor, causing the magnetic response to disappear. This technical solution utilizes the magnetic response of the magnetic sensor and the magnet to monitor the position of the rotary locking part. It has high sensitivity and reliability, can operate stably under various environmental conditions, and ensures the reliability of the linkage control.

[0014] In some embodiments, the handle mounting assembly includes a pivot mounting base installed on the door body and a pivot disposed on the pivot mounting base. A magnetic sensor is installed on the pivot mounting base and located on one side of the pivot. A bushing is eccentrically disposed on the rotary locking part, the bushing being rotatably connected to the pivot. A magnet is installed on the rotary locking part and located on one side of the bushing. This technical solution allows for a compact spatial layout of the components and more stable and reliable cooperation between them.

[0015] In some embodiments, the rotary locking portion has a third position relative to the handle mounting assembly, between a first position and a second position, and close to the first position. When the rotary locking portion is between the first and third positions, the position of the magnet always intersects with the magnetic induction area of ​​the magnetic sensor to generate a magnetic response. This technical solution ensures that when the handle is only slightly loosened, or when the rotary locking portion rotates between the first and third positions, the electromagnetic lock will not be triggered to unlock. The electromagnetic lock will only be triggered when the rotary locking portion rotates beyond the third position, thus preventing unlocking due to accidental loosening of the handle.

[0016] In some embodiments, the rotary locking part has a lock groove for locking the lock cylinder, and the lock groove has an opening for the lock cylinder to enter or exit the lock groove. When the rotary locking part is in the second position, the lock cylinder is located at the opening. When the rotary locking part rotates from the second position to the first position, the lock cylinder enters the lock groove through the opening and slides along the groove wall into the lock groove. The groove wall of the lock groove has a stop protrusion. When the rotary locking part rotates from the first position to the third position, the stop protrusion abuts against the lock cylinder to prevent the rotary locking part from freely rotating towards the second position without external force. This technical solution, by setting a stop protrusion on the groove wall of the lock groove, can limit the rotation angle within a controllable range when the handle is accidentally rotated by external force, thereby preventing the lock cylinder from accidentally disengaging.

[0017] In some embodiments, the electromagnetic lock includes a lock body and a locking member mounted opposite each other. The lock body has an RFID sensing area, the locking member has an RFID chip that senses the RFID sensing area, the lock body has a bolt that pops out when the RFID sensing area senses the RFID chip, and the locking member has a keyhole for the bolt to be inserted. This technical solution uses an electromagnetic lock with an RFID chip sensor, which helps to improve security and effectively prevents unauthorized unlocking.

[0018] In addition, this utility model also provides a cryogenic storage box, including a box body and a door, wherein a door lock system for cryogenic storage boxes as described in any of the above technical solutions is installed between the door body and the box body. The cryogenic storage box provided by this technical solution adopts a door lock system controlled by a rotary handle lock and an electromagnetic lock, which is convenient to open and has high security.

[0019] In some embodiments, the rotary handle lock is installed between the side of the door and the side of the cabinet, while the electromagnetic lock is installed between the bottom of the door and the bottom frame of the cabinet. In this technical solution, installing the rotary handle lock on the side makes it easier for the user to rotate the handle when opening the door, while installing the electromagnetic lock at the bottom of the door makes its installation more concealed and prevents it from being maliciously damaged.

[0020] Based on the above technical solution, the door lock system for a cryogenic storage box and the cryogenic storage box containing the same provided by this utility model, through the cooperation of the controller, the position monitoring component built into the rotary handle lock and the electromagnetic lock, makes the unlocking process only require turning the handle, without the need for a key, which is simple and convenient to operate, especially when wearing gloves. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0022] Figure 1 A schematic diagram of the structure of a door lock system for a cryogenic storage box provided in one embodiment of the present invention, when installed in the cryogenic storage box and in the locked state;

[0023] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0024] Figure 3 for Figure 1 A magnified view of a section at point B in the middle;

[0025] Figure 4 A schematic diagram of a door lock system for a cryogenic storage box provided in one embodiment of the present invention, when installed in the cryogenic storage box and in the unlocked state;

[0026] Figure 5 for Figure 4 A magnified view of a section at point C;

[0027] Figure 6 for Figure 4 A magnified view of a section at point D;

[0028] Figure 7 A control block diagram of the controller in a door lock system for a cryogenic storage box, provided as an embodiment of the present invention;

[0029] Figure 8 A perspective view of a rotary handle lock in a door lock system for a cryogenic storage box, provided as an embodiment of the present invention;

[0030] Figure 9 A schematic diagram of the handle structure of a rotary handle lock in a door lock system for a cryogenic storage box according to an embodiment of the present invention;

[0031] Figure 10 A schematic diagram of the handle mounting assembly in a rotary handle lock for a door lock system of a cryogenic storage box, provided as an embodiment of the present invention;

[0032] Figure 11 A schematic diagram of the assembly structure of the rotary handle lock of the door lock system for a cryogenic storage box in the first position, provided as an embodiment of the present invention;

[0033] Figure 12 A schematic diagram of the assembly structure of the rotary handle lock of the door lock system for a cryogenic storage box in the second position, provided as an embodiment of the present invention;

[0034] Figure 13A schematic diagram of the assembly structure of the handle, lock cylinder, rotating shaft, and position monitoring component in a rotary handle lock of a door lock system for a cryogenic storage box provided in one embodiment of the present invention when the rotary locking part is in the third position;

[0035] Figure 14 A schematic diagram of the structure of the lock body of the electromagnetic lock in a door lock system for a cryogenic storage box provided in one embodiment of the present invention;

[0036] Figure 15 A schematic diagram of the locking mechanism of an electromagnetic lock in a door lock system for a cryogenic storage box, provided as an embodiment of the present invention;

[0037] Figure 16 This is a schematic diagram of the structure of a low-temperature storage box provided in one embodiment of the present invention.

[0038] In the picture:

[0039] 1. Box body; 2. Door body; 3. Door lock system;

[0040] 31. Rotary handle lock; 32. Electromagnetic lock; 33. Controller;

[0041] 311. Lock cylinder; 312. Handle mounting assembly; 3121. Rotary shaft fixing seat; 3122. Rotary shaft; 313. Handle; 3131. Handle part; 3132. Rotary locking part; 3133. Bushing; 314. Position monitoring assembly; 3141. Magnetic sensor; 3142. Magnet;

[0042] 321. Lock body; 3211. Lock tongue; 3212. RFID sensing area; 322. Locking component; 3221. Keyhole; 3222. RFID chip;

[0043] a. Locking groove; b. Opening; c. Stop protrusion. Detailed Implementation

[0044] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0045] In the description of this utility model, it should be understood that the terms "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0048] As attached Figures 1-12 As shown in an illustrative embodiment of the door lock system 3 for a cryogenic storage box according to this utility model, the door lock system 3 for a cryogenic storage box includes a rotary handle lock 31, an electromagnetic lock 32, and a controller 33; the rotary handle lock 31 includes a lock cylinder 311, a handle mounting assembly 312, a handle 313, and a position monitoring assembly 314; the lock cylinder 311 is mounted on the box body 1 of the cryogenic storage box; the handle mounting assembly 312 is mounted on the door body 2 of the cryogenic storage box; the handle 313 includes a rotary locking part 3132 rotatably connected to the handle mounting assembly 312, and a handle part 3131 connected to the rotary locking part 3132 to drive the rotary locking part 3132 to rotate; the rotary locking part 3132 is in a first position relative to the handle mounting assembly 312. The rotating part 3132 rotates between the first and second positions. When the rotating locking part 3132 is in the first position, it locks with the lock cylinder 311. When the rotating locking part 3132 is in the second position, it disengages from the lock cylinder 311. The position monitoring component 314 is installed between the rotating locking part 3132 and the handle mounting component 312 to monitor whether the rotating locking part 3132 is in the first position relative to the handle mounting component 312. The electromagnetic lock 32 is installed between the body 1 and the door 2 of the cryogenic storage box. The controller 33 is communicatively connected to the position monitoring component 314 and the electromagnetic lock 32 respectively, so as to control the electromagnetic lock 32 to unlock when the position monitoring component 314 detects that the rotating locking part 3132 is no longer in the first position. It should be noted that... Figure 1 , Figure 2 , Figure 4 and Figure 5 To show the internal structure of the rotary handle lock 31, the cover plate of the rotary locking part 3132 has been removed.

[0049] The unlocking principle of the door lock system 3 for the cryogenic storage box is as follows: When the door is closed, the electromagnetic lock 32 is in the locked state, and the rotating locking part 3132 of the rotary handle lock 31 is in the first position to lock with the lock cylinder 311, ensuring that the door 2 is tightly closed. The position monitoring component 314 monitors in real time whether the rotating locking part 3132 is in the first position and sends a signal to the controller 33 in real time. When it is necessary to open the door, the handle part 3131 of the rotary handle 313 drives the rotating locking part 3132 to move from the first position to the second position. The position monitoring component 314 detects that the rotating locking part 3132 is no longer in the first position. At this time, the controller 33 controls the electromagnetic lock 32 to unlock. When the rotating locking part 3132 continues to rotate to the second position, the rotating locking part 3132 disengages from the lock cylinder 311, and the door 2 can be opened.

[0050] The aforementioned door lock system 3 for cryogenic storage boxes, through the cooperation of the controller 33 and the position monitoring component 314 and electromagnetic lock 32 built into the rotary handle lock 31, allows the unlocking process to be completed simply by turning the handle 313, without the need for a key. This makes operation simple and convenient, especially when wearing gloves. Furthermore, the door lock system 3 for cryogenic storage boxes achieves locking through the combined use of the rotary handle lock 31 and electromagnetic lock 32, providing high security and making it difficult to pry open.

[0051] Regarding the locking method of the rotary locking part 3132 and the lock cylinder 311, it should be noted that, as Figure 9 , Figure 11 and Figure 12 As shown, the rotary locking part 3132 is provided with a locking groove a for locking the lock cylinder 311, and the locking groove a has an opening b for the lock cylinder 311 to enter or exit the locking groove a; when the rotary locking part 3132 is in the second position, the lock cylinder 311 is located at the opening b; when the rotary locking part 3132 rotates from the second position to the first position, the lock cylinder 311 enters the locking groove a from the opening b and slides along the groove wall of the locking groove a into the locking groove a. It should also be noted that the rotation angle of the rotary locking part 3132 from the first position to the second position is preferably 60°.

[0052] To facilitate monitoring of the relative position of the rotary locking part 3132 and the handle mounting assembly 312, such as Figures 9-12As shown, the position monitoring component 314 includes a magnetic sensor 3141 communicatively connected to the controller 33 and a magnet 3142 for generating a magnetic response with the magnetic sensor 3141. The magnet 3142 is mounted on the rotary locking part 3132, and the magnetic sensor 3141 is mounted on the handle mounting component 312. When the rotary locking part 3132 is in a first position, the magnet 3142 is located within the magnetic induction area of ​​the magnetic sensor 3141 to generate a magnetic response, causing the magnetic sensor 3141 to send a signal to the controller 33 that the rotary locking part 3132 is in the first position. When the rotary locking part 3132 is in a second position, the magnet 3142 is located outside the magnetic induction area of ​​the magnetic sensor 3141, causing the magnetic response to disappear. The position of the rotary locking part 3132 is monitored by the cooperation of the magnetic sensor 3141 and the magnet 3142. This monitoring method is based on magnetic field induction, which has high sensitivity and reliability, and can work stably under various environmental conditions, ensuring the reliability of the linkage control.

[0053] Specifically, such as Figure 9 and Figure 10 As shown, the handle mounting assembly 312 includes a pivot fixing seat 3121 mounted on the door body 2 and a pivot 3122 disposed on the pivot fixing seat 3121. A magnetic sensor 3141 is mounted on the pivot fixing seat 3121 and located on one side of the pivot 3122. A bushing 3133 is eccentrically disposed on the rotary locking part 3132 and is rotatably connected to the pivot 3122. A magnet 3142 is mounted on the rotary locking part 3132 and located on one side of the bushing 3133. This design makes the components spatially compact and the cooperation between them more stable and reliable, ensuring that when the rotary locking part 3132 rotates to the first position, the magnet 3142 can enter the magnetic induction area of ​​the magnetic sensor 3141.

[0054] To prevent the electromagnetic lock 32 from unlocking due to accidental loosening of the handle 313, such as Figure 13As shown, the rotary locking part 3132 has a third position relative to the handle mounting assembly 312, between the first and second positions and close to the first position. When the rotary locking part 3132 is between the first and third positions, the position of the magnet 3142 always intersects with the magnetic induction area of ​​the magnetic sensor 3141 to generate a magnetic response. With this configuration, when the handle 313 is only slightly loose and the rotation of the rotary locking part 3132 is between the first and third positions, the electromagnetic lock 32 will not be triggered to unlock. Only when the rotary locking part 3132 rotates beyond the third position will the electromagnetic lock 32 be triggered to unlock, thus preventing unlocking due to accidental loosening of the handle 313. It should be noted that by selecting a magnet 3142 of appropriate size, it can be ensured that the position of the magnet 3142 always intersects with the magnetic induction area of ​​the magnetic sensor 3141 during the rotation of the rotary locking part 3132 from the first position to the third position. It should also be noted that the rotation angle of the rotating locking part 3132 from the first position to the third position is preferably 10°~15°.

[0055] To prevent the handle lock 31 from unlocking if the handle 313 is accidentally loosened, such as... Figure 13 As shown, the groove wall of lock groove a is provided with a stop protrusion c. When the rotary locking part 3132 rotates from the first position to the third position, the stop protrusion c abuts against the lock cylinder 311 to prevent the rotary locking part 3132 from freely rotating toward the second position without external force. By providing the stop protrusion c on the groove wall of lock groove a, the rotation angle can be limited to a controllable range when the handle 313 is accidentally rotated due to external force interference, thereby preventing the lock cylinder 311 from accidentally disengaging.

[0056] To improve security, such as Figure 14 and Figure 15 As shown, the electromagnetic lock 32 includes a lock body 321 and a locking member 322 mounted opposite each other. The lock body 321 has an RFID sensing area 3212, and the locking member 322 has an RFID chip 3222 that matches and senses the RFID sensing area 3212. The lock body 321 has a bolt 3211 that pops out when the RFID sensing area 3212 and the RFID chip 3222 sense each other. The locking member 322 has a keyhole 3221 into which the bolt 3211 is inserted. When the door 2 is closed, the RFID chip 3222 senses the RFID sensing area 3212 of the lock body 321, causing the bolt 3211 to automatically pop out and insert into the keyhole 3221 to achieve retraction. Using an electromagnetic lock 32 with an RFID chip sensor improves security and effectively prevents unauthorized unlocking. It should be noted that during installation, the lock body 321 is installed on the door 2 of the cryogenic storage box, and the locking component 322 is installed relative to the box body 1 of the cryogenic storage box. The lock body 321 and the locking component 322 can also be installed in opposite positions.

[0057] Based on the aforementioned door lock system 3 for cryogenic storage boxes, such as Figure 16 As shown, this utility model also provides a cryogenic storage box, including a box body 1 and a door body 2, with the aforementioned door lock system 3 for cryogenic storage boxes installed between the door body 2 and the box body 1. This cryogenic storage box uses the aforementioned door lock system 3, which is controlled by a rotary handle lock 31 and an electromagnetic lock 32 in linkage, making opening the door convenient and providing high security.

[0058] Specifically, such as Figure 16 As shown, the rotary handle lock 31 is installed between the side of the door 2 and the side of the cabinet 1, the electromagnetic lock 32 is installed between the bottom of the door 2 and the bottom frame of the cabinet 1, and the controller 33 is installed on the front of the door 2. Installing the rotary handle lock 31 on the side makes it easier for the user to rotate the handle 313 when opening the door; installing the electromagnetic lock 32 on the bottom of the door 2 makes its installation more concealed and prevents it from being deliberately damaged.

[0059] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0060] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A door lock system for a cryopreservation chest, characterized in that, include: Rotary handle lock, comprising: The lock cylinder is installed in the body of the low-temperature storage box; A handle mounting assembly is installed on the door of the cryogenic storage box; A handle includes a rotating locking portion rotatably connected to the handle mounting assembly, and a handle portion connected to the rotating locking portion to drive the rotating locking portion to rotate; the rotating locking portion rotates relative to the handle mounting assembly between a first position and a second position, wherein when the rotating locking portion is in the first position, the rotating locking portion is locked to the lock cylinder, and when the rotating locking portion is in the second position, the rotating locking portion is disengaged from the lock cylinder; A position monitoring component is installed between the rotary locking part and the handle mounting assembly to monitor whether the rotary locking part is located at the first position relative to the handle mounting assembly; An electromagnetic lock is installed between the body and the door of the cryogenic storage box; A controller is communicatively connected to the position monitoring component and the electromagnetic lock, respectively, to control the electromagnetic lock to unlock when the position monitoring component detects that the rotating locking part is no longer in the first position.

2. The door lock system for a cryogenic storage tank of claim 1, wherein, The position monitoring component includes a magnetic sensor communicatively connected to the controller and a magnet for generating a magnetic response with the magnetic sensor. The magnet is mounted on the rotary locking part, and the magnetic sensor is mounted on the handle mounting assembly. When the rotary locking part is in the first position, the magnet is located within the magnetic induction zone of the magnetic sensor to generate a magnetic response, causing the magnetic sensor to send a signal to the controller that the rotary locking part is in the first position. When the rotary locking part is in the second position, the magnet is located outside the magnetic induction zone of the magnetic sensor, causing the magnetic response to disappear.

3. The door lock system for a cryogenic storage box according to claim 2, characterized in that, The handle mounting assembly includes a pivot fixing seat mounted on the door body and a pivot disposed on the pivot fixing seat. The magnetic sensor is mounted on the pivot fixing seat and located on one side of the pivot. The rotating locking part is eccentrically provided with a bushing, the bushing is rotatably connected to the pivot. The magnet is mounted on the rotating locking part and located on one side of the bushing.

4. The door lock system for a cryogenic storage box according to claim 2, characterized in that, The rotating locking part has a third position relative to the handle mounting assembly between the first position and the second position and close to the first position. When the rotating locking part is located between the first position and the third position, the position of the magnet always intersects with the magnetic induction area of ​​the magnetic sensor to generate a magnetic response.

5. The door lock system for a cryogenic storage box according to claim 4, characterized in that, The rotating locking part is provided with a locking groove for locking the lock cylinder, and the locking groove has an opening for the lock cylinder to enter or exit the locking groove; when the rotating locking part is in the second position, the lock cylinder is located at the opening; when the rotating locking part rotates from the second position to the first position, the lock cylinder enters the locking groove from the opening and slides along the groove wall into the locking groove; the groove wall of the locking groove is provided with a stop protrusion; when the rotating locking part rotates from the first position to the third position, the stop protrusion abuts against the lock cylinder to prevent the rotating locking part from freely rotating toward the second position without external driving force.

6. The door lock system for a cryogenic storage box according to claim 1, characterized in that, The electromagnetic lock includes a lock body and a locking member installed opposite to each other. The lock body is provided with an RFID sensing area, and the locking member is provided with an RFID chip that matches and senses the RFID sensing area. The lock body is provided with a bolt that pops out when the RFID sensing area senses the RFID chip. The locking member is provided with a keyhole for the bolt to be inserted.

7. A low-temperature storage box, comprising a box body and a door, characterized in that, A door lock system for a cryogenic storage box as described in any one of claims 1-6 is installed between the door and the box body.

8. The low-temperature storage box according to claim 7, characterized in that, The rotary handle lock is installed between the side of the door and the side of the box, and the electromagnetic lock is installed between the bottom of the door and the bottom edge of the box.

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