Locking mechanism and ultralow-temperature equipment with same

Abstract

The utility model discloses a locking mechanism and ultralow temperature equipment with the same, the locking mechanism comprises a connecting plate arranged on the side wall of an equipment main body; the propelling driving part is used for driving the connecting plate to lift and slide in a limiting manner; the bearing is arranged at one end of the door body away from the hinge shaft; the clamping jaw structure is arranged on the connecting plate; the connecting plate slides up and down and is used for controlling the clamping jaw structure to be connected with the locking bearing and separated from the loosening bearing respectively, the ultralow-temperature equipment comprises an equipment body, a door body and a locking assembly, the door body is installed on the equipment body in a hinged mode, and the locking assembly is of a locking structure. The locking device can be matched with the bearing to accurately control the locking state between the door body and the equipment main body, and when the door body is close to the closed position, the driving piece is pushed to be started to drive the clamping jaw structure to lock the bearing, so that effective sealing can be realized even under the condition that the door seal is hardened due to low temperature, and the sealing performance and the heat preservation effect of the equipment are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of ultra-low temperature storage equipment, and particularly relates to a locking mechanism and an ultra-low temperature equipment with the mechanism. Background Art

[0002] An ultra-low temperature biological sample library is an advanced storage facility for long-term preservation of biological materials (such as tissue samples, blood, cell lines, DNA, RNA, and stem cells, etc.). Such sample libraries usually use extremely low temperatures (usually liquid nitrogen temperature, i.e., -196 °C) to almost completely stop all biological activity processes, thereby ensuring the long-term stability and integrity of the samples.

[0003] The temperature of the entire large ultra-low temperature biological sample library is not the storage temperature. Instead, the large library serves as a buffer zone, and the samples are stored in individual ultra-low temperature refrigerator devices within the library. Currently, all ultra-low temperature products on the market are manually operated door-opening and closing devices, which can only be used in normal temperature environments and cannot be used in biological sample libraries at -10 °C, -20 °C, or even lower temperature environments.

[0004] Therefore, this application specifically proposes a locking mechanism and an ultra-low temperature equipment with the mechanism to solve the above technical problems. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a locking mechanism and an ultra-low temperature equipment with the mechanism, which can be used in a biological sample library at -10 °C, -20 °C, or even lower temperature environments to complete the locking function of the door body on the equipment main body.

[0006] To solve the above technical problems, the utility model provides a locking mechanism, which is arranged on the equipment main body where a door body is hingedly installed and is used to control the door body to be locked and fixed on the equipment main body. The locking mechanism includes:

[0007] A connecting plate, which is arranged on the side wall of the equipment main body;

[0008] A propulsion driving part, which is used to drive the connecting plate to limit the lifting and sliding;

[0009] A bearing, which is arranged at one end of the door body far from the hinge axis;

[0010] A claw structure, which is arranged on the connecting plate;

[0011] The upward sliding and downward sliding of the connecting plate are used to respectively control the claw structure to connect and lock the bearing and separate and release the bearing.

[0012] Further, the propulsion driving member includes a lead screw rotatably limitedly arranged on the side wall of the equipment main body, a locking motor for driving the rotation of the lead screw, a connecting shaft sleeve arranged at the nut end of the lead screw, and a limiting frame connected to the connecting plate, and the connecting shaft sleeve is arranged on the limiting frame.

[0013] Further, multiple groups of the claw structures are provided and evenly distributed on the connecting plate, multiple groups of the bearings are arranged on the door body and the number is the same as that of the claw structures, and the claw structures are connected to the bearings in one-to-one correspondence.

[0014] Further, the claw structure includes a connecting rod body, a locking claw and a lever shaft, the middle of the locking claw is installed on the side wall of the equipment main body through the lever shaft, one end of the locking claw is installed with the connecting rod body, and the other end of the locking claw is provided with a hook claw structure;

[0015] When the connecting plate is in the lifting and moving state, it is used to drive the lever of the locking claw to flip through the connecting rod body;

[0016] When the locking claw is in the lever flipping state, it is used to control the sliding, clamping connection and disconnection of the bearing through the hook claw structure.

[0017] Further, the claw structure further includes a sliding through hole penetratingly opened on the connecting plate and a sliding shaft block sliding in the sliding through hole, and the sliding through hole is opened on the connecting plate along an inclined direction.

[0018] A locking mechanism is arranged on an equipment main body with a hinged door body, and is used to control the door body to be locked and fixed on the equipment main body, and includes:

[0019] A bearing is arranged at one end of the door body far from the hinge shaft;

[0020] A motor telescopic tube is arranged on the side wall of the equipment main body, and a hook claw structure is arranged at the end, and is used to cooperate with the door body in the locked and closed state.

[0021] A cryogenic equipment includes an equipment main body, a door body and a locking assembly, the door body is hinged to the equipment main body, and the locking assembly is set as the locking mechanism described in any one of the above.

[0022] Further, it further includes a self-opening and closing door assembly arranged on the equipment main body, and the self-opening and closing door assembly is connected to the door body and is used to drive the door body to open and close on the equipment main body.

[0023] Further, the self-opening and closing door assembly is set as a rotation driving member for driving the door body to rotate around the hinge.

[0024] Furthermore, the rotation driving member includes a switch door motor disposed on the device main body, a connecting rod, a slide rail disposed on the door body, and a slider slidably disposed on the slide rail. One end of the connecting rod is disposed on the output shaft of the switch door motor, and the other end of the connecting rod is disposed on the slider.

[0025] The beneficial effects of the present utility model are embodied in:

[0026] 1. By providing a self-opening and closing door assembly on the device main body of the cryogenic device of the present utility model, the opening and closing actions of the door body of the cryogenic device are controlled by controlling the start and stop of the motor installed on the top of the refrigerator device, solving the problem of inconvenient manual opening and closing of the door in the large warehouse environment, and improving the use convenience and environmental adaptability of the device.

[0027] 2. The locking mechanism of the present utility model can precisely control the locking state between the door body and the device main body by providing a propulsion driving member, a connecting plate and a claw structure. When the door body approaches the closed position, the propulsion driving member is activated to drive the claw structure to lock the bearing, ensuring effective sealing even in the case of hardening of the door seal due to low temperature, and enhancing the sealing performance and heat preservation effect of the device.

[0028] 3. The locking mechanism of the present utility model replaces the propulsion driving member, the connecting plate and the claw structure with a motor telescopic tube, which not only simplifies the overall structure, but also uses the hook structure provided at the end to complete the locking state between the door body and the device main body in cooperation with the bearing, ensuring effective sealing even in the case of hardening of the door seal due to low temperature, and enhancing the sealing performance and heat preservation effect of the device.

[0029] 4. Since the door seal of the door body becomes hard in a low-temperature environment and is not conducive to sealing, the present utility model supplements the function of the door seal by mechanical locking, ensuring the sealing performance of the device even under extreme conditions and effectively preventing cold air leakage or external hot air intrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The specification drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0031] Figure 1 is a three-dimensional structural schematic diagram of the locking assembly of the present utility model;

[0032] Figure 2 is a planar schematic diagram of the driving active state of the claw structure of the present utility model;

[0033] Figure 3 is a three-dimensional structural schematic diagram of the cryogenic device of the present utility model;

[0034] Figure 4 This is a schematic perspective view of the self-opening and closing door assembly of the present utility model.

[0035] In the figure:

[0036] 1. Equipment main body; 2. Door body;

[0037] 3. Self-opening and closing door assembly; 31. Rotating drive member; 311. Door opening and closing motor; 312. Connecting rod; 313. Slide rail; 314. Slide block;

[0038] 4. Locking assembly; 41. Pushing drive member; 411. Locking motor; 412. Lead screw; 413. Connecting shaft sleeve; 414. Limit frame; 42. Connecting plate; 43. Claw structure; 431. Sliding through hole; 432. Sliding shaft block; 433. Connecting rod body; 434. Locking claw; 435. Lever shaft; 44. Bearing. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0040] In the first embodiment, refer in detail to Figure 1 and Figure 3 .

[0041] Since the door seal of the door body 2 will become hard in a low-temperature environment, which is not conducive to sealing, therefore, as Figure 1 shown, the present utility model provides a locking mechanism to overcome the problem of poor sealing after the door seal becomes hard and realize the automatic locking and sealing of the door body 2.

[0042] This locking mechanism is arranged on the equipment main body 1 where the door body 2 is hingedly installed, and is used to control the door body 2 to be locked and fixed on the equipment main body 1, and includes:

[0043] Connecting plate 42, arranged on the side wall of the equipment main body 1;

[0044] Pushing drive member 41, used to drive the connecting plate 42 to perform limited lifting and sliding;

[0045] Bearing 44, arranged at one end of the door body 2 far from the hinge axis;

[0046] Claw structure 43, arranged on the connecting plate 42;

[0047] During the upward and downward sliding of the connecting plate 42, it is respectively used to control the claw structure 43 to connect and lock the bearing 44 and separate and release the bearing 44.

[0048] Therefore, in the specific implementation of this structure, through the cooperation of the bearing 44 and the claw structure 43, the locking state between the door body 2 and the equipment main body 1 can be accurately controlled. When the door body 2 approaches the closed position, the propulsion driving part 41 is started, so that the claw structure 43 is further driven by the connecting plate 42 to lock the bearing 44 on the door body 2, ensuring effective sealing even in the case of door seal hardening caused by low temperature, and enhancing the sealing performance and heat preservation effect of the equipment.

[0049] It should be noted that the bearing 44 is arranged to rotate on the door body 2, which can cooperate to ensure that the claw structure 43 can be stably connected to the bearing 44.

[0050] In a further implementation description, the propulsion driving part 41 includes a lead screw 412 arranged in a limited rotation on the side wall of the equipment main body 1, a locking motor 411 for driving the lead screw 412 to rotate, a connecting shaft sleeve 413 arranged at the nut end of the lead screw 412, and a limit frame 414 connected to the connecting plate 42. The connecting shaft sleeve 413 is rotatably arranged on the limit frame 414.

[0051] At this time, as Figure 2 shown, the lead screw 412 is arranged vertically on the side wall of the equipment main body 1. Therefore, by driving the lead screw 412 to rotate through the locking motor 411, the nut end on the lead screw 412 can be used to control the connecting shaft sleeve 413 to drive the limit frame 414 to move along the length direction of the lead screw 412, so as to drive the connecting plate 42 to move up and down vertically. At this time, the limit frame 414 is also limited in lifting through the frame structure.

[0052] In addition, it should be supplemented that the locking motor 411 of the propulsion driving part 41 generally uses a traditional servo motor or a stepping motor. Of course, the locking motor 411 can also be replaced with other structures in the existing technology on the premise of meeting the rationality requirements.

[0053] In addition, in other implementation manners, the propulsion driving part 41 can also include a limit frame 414 and a linear driving motor for driving the limit frame 414 to move in a limited way vertically to achieve the same effect.

[0054] In a further implementation description, reference can also be made to Figure 3 , the claw structure 43 is set to multiple groups and evenly distributed on the connecting plate 42, and multiple groups of bearings 44 are arranged on the door body 2 and the number is the same as that of the claw structure 43, and the claw structure 43 is connected to the bearing 44 in one-to-one correspondence.

[0055] Here, through the synchronous use of multiple groups of jaw structures 43 and bearings 44, it is possible to ensure the uniform sealing and pressing of the door body 2 on the equipment main body 1, and ensure the sealing effect under low-temperature conditions.

[0056] In a further implementation description, as Figure 1 and Figure 2 shown, the jaw structure 43 includes a connecting rod body 433, a locking jaw 434, and a lever shaft 435. The middle of the locking jaw 434 is installed on the side wall of the equipment main body 1 through the lever shaft 435. One end of the locking jaw 434 is installed with a connecting rod body 433, and a hook structure is provided at the other end of the locking jaw 434;

[0057] In the specific implementation process, when the connecting plate 42 is in the lifting and moving state, it is used to drive the lever of the locking jaw 434 to flip through the connecting rod body 433; when the locking jaw 434 is in the lever flipping state, it is used to control the sliding, engaging connection, and disengagement of the bearing 44 through the hook structure.

[0058] Therefore, during the closing process of the door, when the door body 2 moves close to the box body, after the locking mechanism is activated, it can clamp the bearing 44 on the side of the refrigerator door through the hook-shaped part of the hook structure to achieve the locking action.

[0059] Furthermore, the jaw structure 43 further includes a sliding through hole 431 formed through the connecting plate 42 and a sliding shaft block 432 sliding in the sliding through hole 431. The sliding through hole 431 is formed on the connecting plate 42 in an inclined direction.

[0060] When the connecting plate 42 moves up and down, it can utilize the movement of the sliding shaft block 432 in the inclined sliding through hole 431 to ensure that the connecting rod body 433 connected to one end of the jaw structure 43 runs normally in the opposite direction of the connecting plate 42.

[0061] In summary, in response to the problem that the door seal hardens at low temperatures and affects sealing, the function of the door seal is supplemented through mechanical locking. Even under extreme conditions, the sealing performance of the equipment can be ensured, and it can also effectively prevent cold air leakage or external hot air intrusion, reduce energy consumption, and improve the energy efficiency ratio. Specifically, the locking mechanism can precisely control the locking state between the door body 2 and the equipment main body 1 by setting the propulsion drive member 41, the connecting plate 42, and the jaw structure 43, in cooperation with the bearing 44. When the door body 2 approaches the closed position, the propulsion drive member 41 is activated to drive the jaw structure 43 to lock the bearing 44, ensuring effective sealing even in the case of door seal hardening caused by low temperature, and enhancing the sealing performance and heat preservation effect of the equipment.

[0062] Based on the above embodiments, a second embodiment is proposed. By streamlining the structure of the connecting plate 42, the propulsion driving member 41, and the claw structure 43, it can be used alternately according to different environments. For this purpose, a locking mechanism is also provided in this embodiment, which is arranged on the equipment main body 1 hinged with the door body 2 and is used to control the door body 2 to be locked and fixed on the equipment main body 1, including:

[0063] A bearing 44 is arranged at one end of the door body 2 far from the hinge shaft;

[0064] A motor telescopic tube is arranged on the side wall of the equipment main body 1, and a claw structure is arranged at the end, which is used to cooperate with the bearing 44 to lock the door body 2 in the closed state.

[0065] During the use process, by using the claw structure arranged at the end, the locking state between the door body 2 and the equipment main body 1 can be completed in cooperation with the bearing 44, ensuring effective sealing even in the case of door seal hardening caused by low temperature, and enhancing the sealing performance and heat preservation effect of the equipment.

[0066] In addition, it should be noted that the motor telescopic tube here can be a common electric telescopic rod, or other existing structures with electric control telescopic functions can be reasonably replaced for use. At this time, the end claw structure can also refer to the claw structure arranged at one end of the locking claw 434 in the first embodiment.

[0067] Based on the above two groups of embodiments, a third embodiment is also proposed, referring to Figure 3 and Figure 4 .

[0068] As Figure 3 shown, a cryogenic equipment is proposed in this embodiment, including an equipment main body 1, a door body 2, and a locking assembly 4. The door body 2 is hinged and installed on the equipment main body 1, and the locking assembly 4 is set as the locking mechanism in the first embodiment or the locking mechanism in the second embodiment.

[0069] In addition, the equipment also includes a self-opening and closing door assembly 3 arranged on the equipment main body 1. The self-opening and closing door assembly 3 is connected to the door body 2 and is used to drive the door body 2 to open and close on the equipment main body 1.

[0070] Specifically, as Figure 4 shown, the self-opening and closing door assembly 3 is set as a rotation driving member 31 for driving the door body 2 to rotate around the hinge. The rotation driving member 31 includes a door opening and closing motor 311 arranged on the equipment main body 1, a connecting rod 312, a slide rail 313 arranged on the door body 2, and a slider 314 slidably arranged on the slide rail 313. One end of the connecting rod 312 is arranged on the output shaft of the door opening and closing motor 311, and the other end of the connecting rod 312 is arranged on the slider 314.

[0071] Therefore, by driving the connecting rod 312 to rotate through the door opening and closing motor 311, the door body 2 can be further controlled to rotate around the hinge through the slide rail 313 and the slider 314.

[0072] At this time, by precisely controlling the start and stop of the motor installed on the top of the cryogenic equipment box body, the operation of the self-opening and closing door mechanism of the equipment can be controlled, and the automatic opening and closing actions of the door body 2 of the cryogenic equipment can be realized, solving the problem of inconvenient manual opening and closing of the door in the large warehouse environment, and improving the usability and environmental adaptability of the equipment.

[0073] It should be emphasized that the door opening and closing motor 311 here is the same as the locking motor 411 in the above first embodiment, and will not be elaborated here.

[0074] In addition, it can also be explained that the implementation method of driving the opening and closing of the door is not limited to the structure of the door opening and closing motor 311, the connecting rod 312, the slide rail 313 and the slider 314 in another specific implementation. It can also directly use the motor and supporting connecting parts in the existing technology to drive the door body 2 to rotate around the hinge to achieve the same effect.

[0075] In summary, during the specific use of this equipment:

[0076] When closing the door, drive the door opening and closing motor 311. Through the connecting rod and the slider 314 at the top of the door body 2, the door body 2 can be driven to rotate, and the door body 2 is gradually closed; when the free side of the door body 2 runs close to the box body, the door opening and closing motor 311 stops driving; the locking motor 411 of the locking mechanism starts to operate, driving the connecting plate 42 to move upward, driving the end of the locking claw 434 used to connect the bearing 44 to move downward, and the locking claw 434 hooks the bearing 44 on the door body 2 and presses down to pull the door body 2 towards the box body, finally realizing the locking and sealing of the box body of the equipment main body 1.

[0077] When opening the door, the locking mechanism first releases the locking claw 434, and reversing the above actions can realize the operation of automatically opening the door.

[0078] Therefore, based on the further design and use of the self-opening and closing door assembly 3 and the locking mechanism in the above embodiment, the cryogenic equipment with automatic opening and closing doors and a locking mechanism not only applies to low-temperature environments and can be used in low-temperature environments, but also can operate efficiently in normal-temperature environments, improving the grade of the product and the user experience. Moreover, the design that integrates the functions of automatic opening and closing of the door and locking reduces the need for manual operation, improves work efficiency, and at the same time reduces potential safety hazards during the operation process. Especially when dealing with storage equipment for low-temperature or dangerous substances, it significantly enhances the operation safety.

[0079] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0080] In addition, it should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture. If this specific posture changes, then the directional indications will also change accordingly.

[0081] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, in the embodiments of the present utility model, "a plurality" means two or more. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

Claims

1. A locking mechanism, arranged on a device body (1) on which a door body (2) is hingedly mounted, for controlling the door body (2) to be locked and fixed on the device body (1), characterized in that: include: A connecting plate (42) is arranged on a side wall of the device body (1); A propulsion driving member (41) is used to drive the connection plate (42) to limit the lifting and sliding of the connection plate; A bearing (44) is arranged at an end of the door body (2) away from the hinge axis; A claw structure (43) is arranged on the connecting plate (42); The upward sliding and downward sliding of the connecting plate (42) are used to respectively control the claw structure (43) to connect and lock the bearing (44) and to separate and release the bearing (44).

2. The locking mechanism according to claim 1, characterized in that: The propulsion drive member (41) comprises a screw rod (412) which is arranged on the side wall of the device body (1) for limiting rotation, a locking motor (411) for driving the screw rod (412) to rotate, a connecting sleeve (413) arranged on the nut end of the screw rod (412), and a limiting frame (414) connected to the connecting plate (42), wherein the connecting sleeve (413) is arranged on the limiting frame (414).

3. The locking mechanism according to claim 1, characterized in that: The claw structures (43) are arranged in multiple groups and are evenly distributed on the connecting plate (42); the bearings (44) are arranged in multiple groups on the door body (2) and the number is the same as the claw structures (43); the claw structures (43) and the bearings (44) are connected in a one-to-one correspondence.

4. The locking mechanism according to claim 1, characterized in that: The claw structure (43) comprises a connecting rod body (433), a locking claw (434) and a lever shaft (435); the middle part of the locking claw (434) is installed on the side wall of the device body (1) through the lever shaft (435); one end of the locking claw (434) is installed with the connecting rod body (433); and the other end of the locking claw (434) is provided with a hook structure; The connecting plate (42) is used to drive the locking claw (434) to flip through the connecting rod body (433) when in a lifting and moving state; The locking claw (434) is used to control the sliding engagement and disengagement of the bearing (44) through the hook structure when the lever is in a flipped state.

5. The locking mechanism according to claim 4, characterized in that: The claw structure (43) further comprises a sliding through hole (431) penetrating through the connecting plate (42) and a sliding shaft block (432) sliding in the sliding through hole (431); the sliding through hole (431) is opened on the connecting plate (42) along an inclined direction.

6. A locking mechanism, arranged on a device body (1) on which a door body (2) is hingedly mounted, for controlling the door body (2) to be locked and fixed on the device body (1), characterized in that: include: A bearing (44) is arranged at an end of the door body (2) away from the hinge axis; The motor telescopic tube is arranged on the side wall of the device body (1), and a hook structure is arranged at the end thereof for cooperating with the bearing (44) to lock the door body (2) in a closed state.

7. A cryogenic device, comprising a device body (1), a door body (2) and a locking assembly (4), wherein the door body (2) is hingedly mounted on the device body (1), characterized in that: The locking assembly (4) is configured as a locking mechanism as claimed in any one of claims 1 to 6.

8. The ultra-low temperature equipment according to claim 7, characterized in that: It also includes a self-opening and closing door component (3) arranged on the device body (1), wherein the self-opening and closing door component (3) is connected to the door body (2) and is used to drive the door body (2) to open and close on the device body (1).

9. The ultra-low temperature equipment according to claim 8, characterized in that: The self-opening door assembly (3) is configured as a rotating drive member (31) for driving the door body (2) to rotate around a hinge.

10. The ultra-low temperature equipment according to claim 9, characterized in that: The rotating driving member (31) comprises a door opening and closing motor (311) arranged on the equipment body (1), a connecting rod (312), a slide rail (313) arranged on the door body (2), and a slider (314) slidably arranged on the slide rail (313), one end of the connecting rod (312) is arranged on the output shaft of the door opening and closing motor (311), and the other end of the connecting rod (312) is arranged on the slider (314).

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