Opening and closing mode switching assembly, thermal insulation door assembly and programmed cooling instrument

Abstract

The utility model provides an opening and closing mode switching assembly, a heat preservation door assembly and a programmed cooling instrument, the opening and closing mode switching assembly comprises a first connecting piece, a second connecting piece and a driving piece, the first connecting piece is suitable for being fixedly arranged on one side edge of a heat preservation door, and a locking hole is formed in the first connecting piece; an assembling channel is formed in a body of the second connecting piece, a locking pin is arranged in the assembling channel, the locking pin has the freedom degree of stretching out of or retracting into the assembling channel, when the second connecting piece and the first connecting piece are assembled, the locking pin is suitable for being locked in the locking hole, and a connecting part is further arranged on the second connecting piece; one end of the driving piece is rotatably assembled with the programmed cooling instrument main body, and the other end is hinged with the connecting part of the second connecting piece. The heat preservation door is detachably connected with the driving piece, automatic opening and closing of the heat preservation door can be achieved through the driving piece, the manual mode can be switched when the driving piece breaks down, and the situation that normal use of equipment is affected due to the fact that the heat preservation door is locked is avoided.

Description

An opening / closing mode switching component, an insulation door component, and a programmed cooling device. Technical Field

[0001] This utility model belongs to the field of programmed cooling devices, specifically relating to an opening and closing mode switching component, a heat preservation door component, and a programmed cooling device. Background Technology

[0002] As a key device for the cryopreservation of biological samples, the reliability and ease of operation of the insulation door of a programmed cooling system directly affect the performance and safety of the equipment. Traditional insulation doors mostly adopt a single drive mode, which is as follows: In manual operation mode, opening and closing requires rotating the handle or pulling the mechanical lock, which is cumbersome and laborious, and significantly reduces work efficiency, especially when frequently storing and retrieving samples; while in electric drive mode, although automatic opening and closing can be achieved through motor drive, the unreliability of relying too much on the motor is poor. For example, when the motor fails, the transmission mechanism jams, or the control system malfunctions, the insulation door can easily lock completely, affecting the normal use of the equipment and posing a risk of sample damage. Summary of the Invention

[0003] The present invention aims to provide a heat preservation door for a programmable cooling device to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a programmable cooling device insulation door for switching between manual and automatic opening / closing modes of the programmable cooling device insulation door assembly, wherein the switching assembly includes:

[0005] The first connector is adapted to be fixed on one side of the heat preservation door, and a locking hole is provided on the first connector;

[0006] The second connector has an assembly channel on its body, and a locking pin is provided within the assembly channel. The locking pin has the freedom to extend or retract into the assembly channel. When the second connector is assembled with the first connector, the locking pin is adapted to lock in the locking hole. The second connector also has a connecting portion.

[0007] The driving component has one end adapted to be rotated and assembled with the main body of the programmable cooling instrument, and the other end adapted to be hinged to the connecting part of the second connecting component;

[0008] When the second connector is assembled with the first connector via the locking pin, the connection between the drive member and the second connector is hinged, and the heat-insulating door automatically opens and closes under the action of the drive member; when the locking pin is disengaged from the locking hole, the second connector is disengaged from the first connector, and the heat-insulating door switches to manual opening and closing mode.

[0009] In this embodiment, a first connector and a second connector are provided to achieve a detachable connection between the heat preservation door and the drive unit. Under normal working conditions, the heat preservation door can be automatically opened and closed by the drive unit. When the drive unit malfunctions, it can be switched to manual mode to open and close the heat preservation door, so as to avoid the heat preservation door locking up and affecting the normal use of the equipment.

[0010] In one embodiment, the first connector has a limiting protrusion on the side away from the insulated door;

[0011] The second connector has a limiting groove, which is adapted to accommodate the limiting protrusion and limit its movement;

[0012] The locking hole is formed in the limiting protrusion; the locking pin is set in the assembly channel of the second connector by means of an elastic element and corresponds to the locking hole; when switching to the automatic opening and closing mode, the elastic element pops out the locking pin and cooperates with the locking hole to realize the transmission connection between the drive component and the heat preservation door.

[0013] In one embodiment, the heat preservation door is rotatably mounted on the main body of the programmable cooling device, and the first connecting member is disposed on one side of both sides of the rotating shaft of the heat preservation door.

[0014] The limiting protrusion faces away from the heat preservation door. After the limiting groove engages with the limiting protrusion, the locking pin is adapted to penetrate the limiting protrusion along the length of the side of the heat preservation door.

[0015] In one embodiment, the second connector has a limiting groove communicating with the assembly channel on the side away from the heat preservation door;

[0016] A lever is fixed on the locking pin, the lever being adapted to pass through the limiting slot and slide along the limiting slot toward or away from the locking hole.

[0017] In one embodiment, the connecting portion of the second connector is an ear plate disposed on the lower part of the second connector body, and the ear plate is hinged to the driving end of the driving member.

[0018] In one embodiment, the driving element is an electric actuator or a cylinder.

[0019] In one embodiment, the first connector and the second connector are assembled in contact, and the locking hole on the first connector corresponds to the assembly channel on the second connector on the contact surface. The locking pin forms a limiting structure in the locking hole. The assembly channel is provided with an elastic element to form an elastic thrust on the locking pin toward the locking hole.

[0020] On the other hand, this utility model provides a heat preservation door assembly for a programmable cooling device, including a door cover frame and the opening and closing mode switching assembly. The door cover frame is fixed on the main body of the programmable cooling device, and the heat preservation door is rotatably assembled with the door cover frame. The heat preservation door opens and closes relative to the door cover frame under the drive of the opening and closing mode switching assembly.

[0021] A sealing ring is fixedly installed on the inner side of the heat-insulating door. When closed, the sealing ring is fastened between the heat-insulating door and the door cover frame, so that the interior of the programmable cooling device forms a sealed space.

[0022] In one embodiment, the sealing ring has a hollow structure, and a through hole is provided on the side of the longitudinal section of the sealing ring away from the heat preservation door. The through holes are evenly distributed along the circumference of the sealing ring.

[0023] In this embodiment, a through hole is provided on the sealing ring. When the insulation door is closed, the gas inside the sealing ring can be discharged through the through hole, thus preventing the sealing ring from easily breaking under the action of internal gas pressure after it hardens due to cold.

[0024] On the other hand, this utility model provides a programmable cooling device, including the programmable cooling device insulation door assembly. Attached Figure Description

[0025] Figure 1 is a schematic diagram of the heat preservation door assembly of the programmable cooling device of this utility model;

[0026] Figure 2 is a side view of the heat preservation door assembly of the programmable cooling device of this utility model;

[0027] Figure 3 is a top view of the opening and closing mode switching component of this utility model;

[0028] Figure 4 is a cross-sectional view along direction A in Figure 3;

[0029] Figure 5 is a side view of the opening and closing mode switching component of this utility model (with hidden drive component);

[0030] Figure 6 is a top view of the sealing ring of this utility model;

[0031] Figure 7 is a cross-sectional view along direction B in Figure 6;

[0032] Figure 8 is a side view of the sealing ring of this utility model.

[0033] Explanation of reference numerals in the attached figures:

[0034] 01-Insulated door;

[0035] 02-First connector; 021-Limiting protrusion; 022-Locking hole;

[0036] 03-Door cover frame;

[0037] 04-Second connecting piece; 041-Limiting groove; 042-Toggle lever; 043-Elastic element; 044-Locking pin; 045-Limiting slot;

[0038] 05-Drive components;

[0039] 06-Sealing ring; 061-Through hole. Detailed Implementation

[0040] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0041] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0042] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention 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 the present invention.

[0043] Furthermore, the terms "first" and "second" 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] Currently, most thermal insulation doors in programmed cooling systems employ a single drive mode, primarily divided into two categories: purely manual drive and purely electric drive. Manual drive directly controls the opening and closing of the door via mechanical structures (such as rotary handles, push-pull rods, or latches). While this avoids reliance on electricity, it requires significant physical effort during frequent operation and is susceptible to reduced sealing or component wear due to limitations in the stroke accuracy of mechanical transmission. Electric drive relies on motors, gearboxes, or linear actuators to achieve automatic door opening and closing. While this improves operational convenience, a failure in the drive motor, jamming of the transmission mechanism, or power outage will render the door completely unable to open or close properly, posing a risk of being unable to be manually intervened in emergencies. To address the aforementioned technical deficiencies, this application provides an opening / closing mode switching component. By creating a detachable design between the insulated door and the drive unit, when the drive unit malfunctions, the transmission lock between the insulated door and the drive unit can be quickly released, switching to manual opening mode. This completely avoids the problem of the insulated door locking due to the failure of a single drive mode, ensuring continuous operation of the equipment and sample safety. Furthermore, this opening / closing mode switching component does not require complex disassembly steps or the use of tools, allowing staff to freely select the drive mode according to their needs.

[0045] To solve the above-mentioned technical problems, this utility model provides an opening and closing mode switching component for switching between manual and automatic opening and closing modes of the insulation door component of a programmable cooling instrument. Please refer to Figures 1 to 8. The opening and closing mode switching component provided by this utility model is described below. It includes a first connecting member 02, a second connecting member 04, and a driving member 05. The insulation door 01 is detachably connected to the driving member 05 through the first connecting member 02 and the second connecting member 04. The first connecting member 02 and the second connecting member 04 are locked together, which can realize the fixed connection between the insulation door 01 and the driving end of the driving member 05. The insulation door 01 can be opened and closed by driving the driving member 05. When the driving member 05 fails, the connection between the first connecting member 02 and the second connecting member 04 can be disconnected, thereby disconnecting the insulation door 01 from the driving member 05. At this time, the operator can manually open the insulation door 01. Specifically, the first connecting member 02 is suitable for being fixed on one side of the insulation door 01, and a locking hole 022 is provided on the first connecting member 02. The second connecting member 04 has an assembly channel on its body, and a locking pin 044 is provided in the assembly channel. The locking pin 044 has the freedom to extend or retract into the assembly channel. When the second connecting member 04 is assembled with the first connecting member 02, the locking pin 044 is adapted to lock in the locking hole 022. The second connecting member 04 also has a connecting part. One end of the driving member 05 is adapted to be rotatably assembled with the main body of the programmable cooling instrument, and the other end is adapted to be hinged to the connecting part of the second connecting member 04. When the second connecting member 04 is assembled and connected to the first connecting member 02 through the locking pin 044, the driving member 05 is hinged to the connecting part of the second connecting member 04, and the heat preservation door 01 is automatically opened and closed under the action of the driving member 05. When the locking pin 044 is disengaged from the locking hole 022, the second connecting member 04 is disengaged from the first connecting member 02, and the heat preservation door 01 switches to manual opening and closing mode.

[0046] In this embodiment, the driving mode of the heat preservation door 01 can be quickly switched by locking or disconnecting the first connecting member 02 and the second connecting member 04. Under normal working conditions, the heat preservation door 01 is fixedly connected to the driving end of the driving member 05, which can realize the automatic opening and closing of the heat preservation door 01 without the need for frequent manual operation. Moreover, the driving member 05 has high operating precision, avoiding the decrease in equipment sealing or component wear due to improper operation. If the driving member 05 malfunctions, it can be quickly switched to manual mode to ensure that the staff can intervene immediately and prevent the heat preservation door 01 from locking and preventing the sample from being unable to be taken out in time.

[0047] In an optional embodiment, referring to Figures 1 and 3, in the locked state, the second connecting member 04 is located on the side of the first connecting member 02 away from the insulation door 01, and the first connecting member 02 is assembled with the second connecting member 04 via a limiting protrusion 021. Specifically, the first connecting member 02 has a limiting protrusion 021 on the side away from the insulation door 01. A limiting groove 041 is provided on the second connecting member 04, which is adapted to accommodate the limiting protrusion 021 and limit it. A locking hole 022 is formed in the limiting protrusion 021. A locking pin 044 is disposed in the assembly channel of the second connecting member 04 by means of an elastic member 043 and corresponds to the locking hole 022. When switching to the automatic opening and closing mode, the elastic member 043 ejects the locking pin 044 and engages with the locking hole 022, realizing the transmission connection between the drive member 05 and the insulation door 01. Specifically, the elastic element 043 is a compression spring, which is sleeved on the locking pin 044. One end of the compression spring is fixed to the inner wall of the assembly channel, and the other end is fixedly connected to the locking pin 044. The side wall of the locking pin 044 is provided with a shoulder suitable for connecting with the compression spring.

[0048] In one specific embodiment, the heat preservation door 01 is rotatably mounted on the main body of the programmable cooling device, and the first connecting member 02 is disposed on one side of both sides of the rotation axis of the heat preservation door 01. The limiting protrusion 021 faces away from the heat preservation door 01. After the limiting groove 041 engages with the limiting protrusion 021, the locking pin 044 is adapted to pass through the limiting protrusion 021 along the length direction of the side of the heat preservation door 01. The limiting groove 041 opens away from the main body of the programmable cooling device, and the width of the limiting groove 041 is slightly larger than the width of the limiting protrusion 021. This ensures that the limiting protrusion 021 can smoothly fall into the limiting groove 041 when the door is closed, while also ensuring that the limiting protrusion 021 can be stably locked in the limiting groove 041 by the locking pin 044.

[0049] Furthermore, please refer to Figures 1 to 5. The second connecting member 04 has a limiting slot 045 communicating with the assembly channel on the side away from the insulated door 01. A lever 042 is fixed on the locking pin 044 for easy operation by the worker. The lever 042 is adapted to pass through the limiting slot 045 and slide along the limiting slot 045 towards or away from the locking hole 022, so that the locking pin 044 enters or disengages from the locking hole 022 along the extending direction of the limiting slot 045. When switching to manual mode, the worker moves the lever 042 away from the limiting protrusion 021, causing the locking pin 044 to disengage from the locking hole 022, thereby separating the first connecting member 02 from the second connecting member 04. When switching to automatic mode, the limiting protrusion 021 is placed in the limiting groove 041, and the locking pin 044 is inserted into the locking hole 022 under the action of the elastic member 043 to achieve locking of the first connecting member 02 and the second connecting member 04.

[0050] In one specific embodiment, the connecting part of the second connector 04 is an ear plate disposed on the lower part of the body of the second connector 04, and the ear plate is hinged to the driving end of the driving member 05.

[0051] Preferably, the drive component 05 is an electric push rod or a cylinder.

[0052] In another optional embodiment, the first connector 02 and the second connector 04 are assembled in contact. The locking hole 022 on the first connector 02 corresponds to the assembly channel on the second connector 04, and the locking pin 044 forms a limiting structure within the locking hole 022. An elastic element 043 is provided within the assembly channel to generate an elastic thrust on the locking pin 044 towards the locking hole 022. Preferably, in the locked state, the end face of the first connector 02 away from the insulation door 01 and the end face of the second connector 04 near the insulation door 01 are the contact surfaces, and the locking member is adapted to penetrate into the locking hole 022 in a direction perpendicular to the contact surface and lock.

[0053] On the other hand, this utility model provides a heat preservation door assembly for a programmable cooling device, including a door cover frame 03 and an opening / closing mode switching component. The door cover frame 03 is fixedly mounted on the main body of the programmable cooling device. The heat preservation door 01 is rotatably assembled with the door cover frame 03. The heat preservation door 01 opens and closes relative to the door cover frame 03 under the drive of the opening / closing mode switching component. A sealing ring 06 is fixedly mounted on the inner side of the heat preservation door 01. When closed, the sealing ring 06 is engaged between the heat preservation door 01 and the door cover frame 03, thereby forming a sealed space inside the programmable cooling device.

[0054] In one specific embodiment, the sealing ring 06 has a hollow structure, and a through hole 061 is provided on the side of the longitudinal section of the sealing ring 06 away from the heat preservation door 01. The through holes 061 are evenly distributed around the circumference of the sealing ring 06. During the closing process of the heat preservation door 01, the low-temperature gas trapped inside the sealing ring 06 can be discharged through the through hole 061, eliminating the internal positive pressure phenomenon caused by gas compression, avoiding the stress concentration problem caused by unilateral pressure on the sealing ring 06, and solving the problem that the sealing ring 06 is prone to brittle fracture due to repeated compression because of low-temperature hardening.

[0055] On the other hand, this utility model provides a programmable cooling device, including the above-mentioned programmable cooling device heat preservation door assembly.

[0056] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An opening / closing mode switching component, used for switching between manual and automatic opening / closing modes of the insulation door component of a programmable cooling device, characterized in that, The switching assembly includes: a first connector adapted to be fixed on one side of the heat-insulating door, the first connector having a locking hole; a second connector having an assembly channel on its body, a locking pin provided in the assembly channel, the locking pin having the freedom to extend or retract into the assembly channel, the locking pin being adapted to lock in the locking hole when the second connector is assembled with the first connector, the second connector also having a connecting portion; and a driving member, one end adapted to be rotatably assembled with the main body of the programmable cooling device, the other end adapted to be hinged to the connecting portion of the second connector; when the second connector is assembled with the first connector through the locking pin, the driving member is hinged to the connecting portion of the second connector, and the heat-insulating door automatically opens and closes under the action of the driving member; when the locking pin is disengaged from the locking hole, the second connector is disengaged from the first connector, and the heat-insulating door switches to manual opening and closing mode.

2. The opening / closing mode switching component as described in claim 1, characterized in that, The first connector has a limiting protrusion on the side away from the insulated door; the second connector has a limiting groove, which is adapted to accommodate the limiting protrusion and limit it; the locking hole is formed in the limiting protrusion; the locking pin is set in the assembly channel of the second connector by means of an elastic element and corresponds to the locking hole; when switching to the automatic opening and closing mode, the elastic element pops out the locking pin and engages with the locking hole to realize the transmission connection between the drive component and the insulated door.

3. The opening / closing mode switching component as described in claim 2, characterized in that, The heat preservation door is rotatably mounted on the main body of the programmable cooling device on one side. The first connecting piece is located on one side of both sides of the heat preservation door's rotating shaft. The limiting protrusion faces away from the heat preservation door. After the limiting groove engages with the limiting protrusion, the locking pin is adapted to penetrate the limiting protrusion along the length of the side of the heat preservation door.

4. The opening / closing mode switching component as described in claim 1, characterized in that, The second connector has a limiting slot on the side away from the insulated door that communicates with the assembly channel; a lever is fixed on the locking pin, the lever being adapted to pass through the limiting slot and slide along the limiting slot toward or away from the locking hole.

5. The opening / closing mode switching component as described in claim 1, characterized in that, The connecting part of the second connector is an ear plate located at the lower part of the body of the second connector, and the ear plate is hinged to the driving end of the driving member.

6. The opening / closing mode switching component as described in claim 1, characterized in that, The driving component is an electric push rod or a cylinder.

7. The opening / closing mode switching component as described in claim 1, characterized in that, The first connector and the second connector are assembled in contact. The locking hole on the first connector corresponds to the assembly channel on the second connector. The locking pin forms a limiting structure in the locking hole. An elastic element is provided in the assembly channel to form an elastic thrust on the locking pin toward the locking hole.

8. A heat preservation door assembly for a programmable cooling device, characterized in that, The device includes a door cover frame and an opening / closing mode switching component as described in any one of claims 1-7. The door cover frame is fixedly mounted on the main body of the programmable cooling device. The heat-insulating door is rotatably assembled with the door cover frame. The heat-insulating door opens and closes relative to the door cover frame under the drive of the opening / closing mode switching component. A sealing ring is fixedly mounted on the inner side of the heat-insulating door. When closed, the sealing ring engages between the heat-insulating door and the door cover frame, thereby forming a sealed space inside the programmable cooling device.

9. The heat preservation door assembly of the programmable cooling device as described in claim 8, characterized in that, The sealing ring has a hollow structure, and a through hole is provided on the side of the longitudinal section of the sealing ring away from the heat preservation door. The through holes are evenly distributed along the circumference of the sealing ring.

10. A programmed cooling device, characterized in that, Includes the thermal insulation door assembly of the programmed cooling device as described in claim 8 or 9.

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