A door lock device and a centrifuge

Abstract

The door lock device provided by the embodiment of the application comprises a lock tongue, a mounting plate, a door lock hook assembly and a driving assembly; the driving assembly comprises a motor and a locking column; the motor drives the locking column to translate and slide relative to the mounting plate; the sliding direction is parallel to the translation direction of the locking column; when the driving assembly maintains the door lock hook assembly in the locking position through the locking column, the motor is pulled to make the motor and the locking column translate relative to the mounting plate, the locking column releases the door lock hook assembly, and the door lock hook assembly exits the lock tongue to be unlocked after resetting. When the embodiment of the application needs to be unlocked urgently, the motor is pulled to make the motor and the locking column translate relative to the mounting plate, the locking column releases the door lock hook assembly, and then the door lock hook assembly exits the lock tongue to be unlocked after resetting. The force of pulling the motor during the emergency unlocking depends on the force between the motor and the mounting plate, and is irrelevant to the self-locking force of the motor.

Description

Technical Field

[0001] This invention relates to the field of centrifuge technology, and more particularly to a door lock device and a centrifuge. Background Technology

[0002] Centrifuges are instruments used for separating biological samples and are widely used in life sciences, medicine, chemistry, environmental protection, and other fields. For safety reasons, the centrifuge door should not be opened while the rotor is rotating at high speed; the door should also not be easily opened if there is debris splashing inside the centrifuge chamber or if a malfunction occurs. However, it is necessary to be able to unlock the door in an emergency if the motor malfunctions.

[0003] Current technology uses a motor to lock and unlock the door. When the motor malfunctions, researchers use a mechanical method to overcome the motor's self-locking force to open the door. For motors with high self-locking forces, a significant amount of force needs to be overcome to open the door. Summary of the Invention

[0004] This invention provides a door lock device designed to solve the problem in the prior art of the difficulty in unlocking a door cover in an emergency using a high self-locking force motor.

[0005] In a first aspect, a door lock device is provided, comprising: Locking tongue (1); Mounting plate (2); The door lock hook assembly (3) and drive assembly (4) are installed on the mounting plate (2); The drive assembly (4) includes a motor (42) and a locking pin (43); the motor (42) drives the locking pin (43) to translate and slide relative to the mounting plate (2), and the sliding direction is parallel to the translation direction of the locking pin (43); When the drive assembly (4) holds the door lock hook assembly (3) in the locked position by the locking pin (43), the motor (42) is pulled to make the motor (42) and the locking pin (43) move relative to the mounting plate (2), the locking pin (43) releases the door lock hook assembly (3), and the door lock hook assembly (3) is reset and then exits the latch (1) to unlock.

[0006] Secondly, a centrifuge is provided, including a door cover (7), a cavity (8) and a door locking device described above, wherein a locking tongue (1) is fixed to the door cover (7) and a mounting plate (2) is fixed to the cavity (8).

[0007] In this embodiment of the invention, a motor and a locking pin that can be moved relative to the mounting plate are provided. When the door lock hook assembly is inserted into the latch and emergency unlocking is required, the motor is pulled to move the motor and the locking pin relative to the mounting plate. The locking pin releases the door lock hook assembly, and after the door lock hook assembly resets, it exits the latch to unlock. The force required to pull the motor during emergency unlocking depends on the force between the motor and the mounting plate and is unrelated to the motor's self-locking force. Emergency unlocking is effortless and compatible with motors of different specifications. Attached Figure Description

[0008] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the door lock device provided in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the door lock hook assembly provided in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the door lock hook assembly provided in Embodiment 1 of the present invention in a locked state; Figure 4 This is an exploded view of the driving component provided in Embodiment 1 of the present invention; Figure 5 This is another exploded view of the driving component provided in Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the emergency unlocking component provided in Embodiment 2 of the present invention; Figure 7 This is a partial schematic diagram of the emergency unlocking component provided in Embodiment 2 of the present invention; Figure 8 This is an exploded view of the emergency unlocking component provided in Embodiment 2 of the present invention; Figure 9 This is another schematic diagram of the emergency unlocking component provided in Embodiment 2 of the present invention; Figure 10 This is a schematic diagram of the centrifuge provided in Embodiment 3 of the present invention; Figure 11 This is a schematic diagram of the centrifuge heat dissipation air duct provided in Embodiment 3 of the present invention; Figure 12 This is a cross-sectional view of the centrifuge provided in Embodiment 3 of the present invention. Detailed Implementation

[0009] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar modules or modules having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Rather, embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0010] In this embodiment of the invention, a motor and a locking pin that can be moved relative to the mounting plate are provided. When the door lock hook assembly is inserted into the latch and emergency unlocking is required, the motor is pulled to move the motor and the locking pin relative to the mounting plate. The locking pin releases the door lock hook assembly, and after the door lock hook assembly resets, it exits the latch to unlock. The force required to pull the motor during emergency unlocking depends on the force between the motor and the mounting plate and is unrelated to the motor's self-locking force. Emergency unlocking is effortless and compatible with motors of different specifications. Example 1

[0011] Figure 1 This is a schematic diagram of the door lock device provided in Embodiment 1 of the present invention. Figure 2 This is a schematic diagram of the door lock hook assembly provided in Embodiment 1 of the present invention. Figure 3 This is a schematic diagram of the door lock hook assembly provided in Embodiment 1 of the present invention in a locked state. Figure 1 , Figure 2 and Figure 3 As shown, the door lock device includes a latch 1, a mounting plate 2, a door lock hook assembly 3, and a drive assembly 4. The mounting plate 2 includes at least a first fixing plate 21 and a second fixing plate 22 that are parallel to each other, and the first fixing plate 21 and the second fixing plate 22 are fixedly connected by a positioning shaft and screws, etc. A notch is provided at the top of the mounting plate 2 for the latch 1 to enter or exit. The door lock hook assembly 3 and the drive assembly 4 are disposed on the mounting plate 2. In this embodiment of the invention, the door lock hook assembly 3 and the drive assembly 4 are disposed in the space between the first fixing plate 21 and the second fixing plate 22. Figure 3 This is a schematic diagram showing the door lock hook assembly 3 in the locked state, concealing the first fixing plate 21. When the door lock hook assembly 3 is in the locked position, it is fixed by the drive assembly 4, maintaining it in the locked position, at which point the door lock hook assembly 3 is inserted into the latch 1. The drive assembly 4 releases the door lock hook assembly 3, and after resetting, it reaches the unlocked position, at which point the door lock hook assembly 3 retracts from the latch 1. When the door lock hook assembly 3 is in the unlocked position, the latch 1 can freely descend or ascend. In this embodiment of the invention, the door lock hook assembly 3 includes a ratchet assembly 31 and a pawl assembly 32. The ratchet assembly 31 and the pawl assembly 32 are held in the unlocked position by the action of an elastic element (not shown in the figure), and can rotate to the locked position under the action of the latch 1, the drive assembly 4, and the elastic element (not shown in the figure).

[0012] Figure 4This is an exploded view of the driving component provided in Embodiment 1 of the present invention. Figure 5 This is another exploded view of the driving component provided in Embodiment 1 of the present invention. For example... Figure 4 and Figure 5 As shown, the drive assembly 4 includes a motor 42 and a locking pin 43. The motor 42 drives the locking pin 43 to translate and slide relative to the mounting plate 2, with the sliding direction parallel to the translation direction of the locking pin 43. Preferably, the drive assembly 4 also includes a motor base 41 and a slide bar 44. The motor 42 is fixed to the motor base 41 by screws or other means and can drive the locking pin 43 to translate. The motor 42 can drive the locking pin 43 to translate via a lead screw, transmission belt, gear rack, or other means, which are not limited here. A first sliding groove 1000 is provided on the side of the motor base 41 opposite to the mounting plate 2. The slide bar 44 is disposed in the first sliding groove 1000 and fixed to the mounting plate 2 by screws or other means. The extending direction of the first sliding groove 1000 is parallel to the translation direction of the locking pin 43. Preferably, the cross-sections of the first sliding groove 1000 and the slide bar 44 are both T-shaped, and their shapes match to allow relative sliding. The slide bar 44 is fixed to the second fixing plate 22.

[0013] In non-emergency situations, the first slide rail 1000 and the slide bar 44 remain relatively stationary, the latch 1 descends, and the locking pin 43 moves horizontally under the drive of the motor 42, abutting against or moving away from the door lock hook assembly 3, maintaining the door lock hook assembly 3 in the locked position or releasing the door lock hook assembly 3 to reset it to the unlocked position. In an emergency situation where the drive assembly 4 holds the door lock hook assembly 3 in the locked position via the locking pin 43, but the motor 42 cannot work properly, the mounting plate 2 and the slide bar 44 remain stationary. The motor base 41 is pulled, at which point the motor 42 and the locking pin 43 are fixed to the motor base 41, becoming an integral part of it. The first slide groove 1000 translates relative to the slide bar 44, causing the motor 42 and the locking pin 43 fixed to the motor base 41 to translate relative to the mounting plate 2. The direction of the locking pin 43's translation is opposite to the direction in which it abuts against the door lock hook assembly 3, thus releasing the door lock hook assembly 3. After the door lock hook assembly 3 resets, it disengages from the latch 1, unlocking the door. The rotating structure of the door lock hook assembly 3 can use existing designs or be designed differently. The structure of the locking pin 43 abutting against the door lock hook assembly 3 can be achieved using a pin, groove, or other fittings; no limitation is made here.

[0014] The force required to pull the motor base 41 can be to overcome the friction between the first slide groove 1000 and the slide bar 44, or it can be any other force. As an embodiment of the invention, the door lock device further includes a second elastic element 6, the first end of which is fixed to the motor base 41, and the second end of which is fixed to the mounting plate 2. The force required to pull the motor base 41 is primarily to overcome the force of the second elastic element 6; the force required to pull the motor base 41 can be adjusted by changing the elastic coefficient of the second elastic element 6.

[0015] To facilitate pulling the motor base 41, as an embodiment of the present invention, the door lock device also includes an unlocking rope (not shown in the figure) connected to the motor base 41, and pulling the unlocking rope can cause the motor base 41 to move horizontally.

[0016] For operational safety, as an embodiment of the present invention, the door lock device also includes a micro switch (not shown in the figure). When the motor base 41 is moved a preset distance, the micro switch is triggered to send a signal to the system and the user indicating that emergency unlocking has been initiated.

[0017] In this embodiment of the invention, the drive assembly 4 further includes a gear 45 and a rack 46 that mesh with each other. The motor base 41 has a second slide groove 2000, the rack 46 is disposed in the second slide groove 2000, and the locking pin 43 is fixed to the rack 46. The motor 42 is connected to the gear 45, and driving the gear 45 to rotate can drive the rack 46 and the locking pin 43 to translate.

[0018] To make the structure of the drive assembly 4 more compact, in one embodiment of the present invention, the teeth of the rack 46 and the locking pin 43 are located on opposite sides of the rack 46. Preferably, the rack 46 has an I-shaped cross-section, with the locking pin 43 located above the rack 46 and the teeth of the rack 46 located below the rack 46. The rack 46 is suspended in the second slide groove 2000, and the gear 45 passes through a hole on the motor base 41 and meshes with the rack 46.

[0019] In this embodiment of the invention, a sliding strip fixed relative to the mounting plate and a first sliding groove on the motor mount are matched to form a motor and a locking pin that can move relative to the mounting plate. When the door lock hook assembly is inserted into the latch and emergency unlocking is required, the motor mount is pulled to move the motor and locking pin fixed thereon relative to the mounting plate. The locking pin releases the door lock hook assembly, and after the door lock hook assembly resets, it retracts from the latch to unlock. The force required to pull the motor mount during emergency unlocking depends on the force between the motor mount and the mounting plate and is unrelated to the motor's self-locking force. Emergency unlocking is effortless and compatible with motors of different specifications. Example 2

[0020] In this embodiment of the invention, the basic structure of the door lock device is the same as that of Embodiment 1. The components that are the same as those in Embodiment 1 are referred to by the same reference numerals as those in Embodiment 1, including all the features described in Embodiment 1, which will not be repeated here.

[0021] Figure 6 This is a schematic diagram of the emergency unlocking component provided in Embodiment 2 of the present invention. Figure 7 This is a partial schematic diagram of the emergency unlocking component provided in Embodiment 2 of the present invention. Figure 8 This is an exploded view of the emergency unlocking component provided in Embodiment 2 of the present invention. Figure 9 This is another schematic diagram of the emergency unlocking component provided in Embodiment 2 of the present invention. (In conjunction with...) Figures 1 to 9In this embodiment of the invention, the door lock device further includes an emergency unlocking component 5. The emergency unlocking component 5 includes an unlocking plate 51, a first shaft 52, a first pin 53, and a first elastic member 55. The first shaft 52 is fixed to the motor base 41, and the first pin 53 is fixed to the mounting plate 2. The unlocking plate 51 is sleeved on the first shaft 52 and rotatably connected to the motor base 41 via the first shaft 52, allowing it to rotate around the first shaft 52. The first end of the first elastic member 55 is fixed to the unlocking plate 51, and the second end of the first elastic member 55 is fixed to the motor base 41. The line connecting the projections of the first shaft 52 and the first pin 53 onto the motor base 41 is parallel to the extending direction of the first slide groove 1000.

[0022] Under the action of the first elastic element 55, the unlocking plate 51 rotates around the first axis 52 in the direction of the first pin 53. When the unlocking plate 51 hooks the first pin 53, the motor base 41, the unlocking plate 51, and the mounting plate 2 are relatively fixed, and the motor base 41 and the mounting plate 2 cannot slide relative to each other along the extension direction of the first slide groove 1000. Pulling the unlocking plate 51 to rotate it around the first axis 52 in a direction away from the first pin 53, when the unlocking plate 51 disengages from the first pin 53, the motor base 41 can translate relative to the mounting plate 2.

[0023] In non-emergency situations, the door lock hook assembly 3 rotates and is fixed under the action of the drive assembly 4, causing it to insert into the latch 1. During this process, if other components cause excessive resistance to the rotation or fixing of the door lock hook assembly 3, it will force the motor mount 41 to slide in the opposite direction, potentially causing the locking pin 43 to loosen and the door lock hook assembly 3 to retract from the latch 1, resulting in locking failure. In non-emergency situations, the unlocking plate 51 hooks the first pin 53, ensuring that the motor mount 41 and the mounting plate 2 remain relatively stationary, preventing locking failure due to excessive resistance to the rotation or fixing of the door lock hook assembly 3.

[0024] To limit the rotation angle of the unlocking plate 51, as an embodiment of the present invention, the emergency unlocking assembly 5 further includes a second shaft 54 ​​fixed to the motor base 41; correspondingly, the unlocking plate 51 has a limiting groove 4000. The second shaft 54 ​​passes through the limiting groove 4000. When the unlocking plate 51 rotates relative to the motor base 41 around the first shaft 52, the limiting groove 4000 is limited by the second shaft 54. Pulling the unlocking plate 51 causes it to disengage from the first pin 53. After rotating to its limit position away from the first pin 53, the unlocking plate 51 can no longer rotate relative to the motor base 41 around the first axis 52, and the unlocking plate 51 and the motor base 41 become a single unit. Continuing to pull the unlocking plate 51 causes the motor base 41 to slide relative to it along the extension direction of the first slide groove 1000, that is, the motor base 41 slides in the opposite direction to the direction in which the locking pin 43 translates and abuts against the door lock hook assembly 3, thereby driving the locking pin 43 to translate, causing the locking pin 43 to release the door lock hook assembly 3. The door lock hook assembly 3 then returns to the unlocked position and disengages the latch 1. The second axis 54 limits the limiting groove 4000 to the point where the unlocking plate 51 can completely disengage from the first pin 53. Furthermore, to better secure the first axis 52 and the second axis 54, the emergency unlocking assembly 5 also includes a cover plate 56.

[0025] The emergency unlocking process of pulling the unlocking plate 51 can be roughly divided into two stages. Before the unlocking plate 51 is limited, the force pulling the unlocking plate 51 is mainly to overcome the force of the first elastic element 55; after the unlocking plate 51 is limited, the force pulling the unlocking plate 51 is mainly to overcome the force of the second elastic element 6. The force pulling the unlocking plate 51 can be adjusted by changing the elastic coefficients of the first elastic element 55 and the second elastic element 6.

[0026] Figure 7This is a partial schematic diagram of the emergency unlocking assembly after concealing the unlocking plate 51 and cover plate 56. In this embodiment of the invention, the mounting plate 2 has a third sliding groove 3000, the extension direction of which is parallel to the extension direction of the first sliding groove 1000. The first shaft 52 and the second shaft 54 ​​pass through the third sliding groove 3000. The first pin 53 is fixed to the side of the mounting plate 2 away from the motor base 41, and the unlocking plate 51 is rotatably connected to the motor base 41 through the end of the first shaft 52 away from the motor base 41. Preferably, the door lock hook assembly 3 and the motor base 41 are disposed in the space between the first fixing plate 21 and the second fixing plate 22, the slide bar 44 is fixed to the second fixing plate 22, and the motor 42 is disposed on the side of the motor base 41 away from the second fixing plate 22. The third sliding groove 3000 is formed in the second fixing plate 22, and the first shaft 52 and the second shaft 54 ​​pass through the third sliding groove 3000, exposed on the outside of the second fixing plate 22. The first pin 53 is fixed on the outside of the second fixing plate 22. The unlocking plate 51 is located on the outside of the second fixed plate 22 and is rotatably connected to the motor base 41 via the end of the first shaft 52 away from the motor base 41. The components of the emergency unlocking assembly 5 are located on the outside of the mounting plate 2, so that the components of the drive assembly 4 have more space to be arranged on the inside of the mounting plate 2.

[0027] In this embodiment of the invention, a sliding strip fixed relative to the mounting plate and a first sliding groove on the motor mount are matched to form a motor and a locking pin that can move relative to the mounting plate. When the door lock hook assembly is inserted into the latch and emergency unlocking is required, the motor mount is pulled to move the motor and locking pin fixed thereon relative to the mounting plate. The locking pin releases the door lock hook assembly, and after the door lock hook assembly resets, it retracts from the latch to unlock. The force required to pull the motor mount during emergency unlocking depends on the force between the motor mount and the mounting plate and is unrelated to the motor's self-locking force. Emergency unlocking is effortless and compatible with motors of different specifications. Example 3

[0028] In this embodiment of the invention, the basic structure of the door lock device is the same as that of Embodiment 1 or Embodiment 2. The components that are the same as those in Embodiment 1 or Embodiment 2 use the same reference numerals as those in Embodiment 1 and Embodiment 2, including all the features described in Embodiment 1 and Embodiment 2, which will not be repeated here.

[0029] The centrifuge provided in this embodiment of the invention includes a door cover 7, a cavity 8, and a door lock device as described in Embodiment 1 or Embodiment 2. Figure 10 This is a schematic diagram of the centrifuge provided in Embodiment 3 of the present invention. Figure 10As shown, the latch 1 is fixed to the door cover 7, and the mounting plate 2 is fixed to the cavity 8. When the door cover 7 is closed towards the cavity 8, the latch 1 and the mounting plate 2 are in corresponding positions, and together with other components of the door lock device, they perform the locking or unlocking process described above. One end of the unlocking rope (not shown in the figure) is connected to the motor mount 41 or the unlocking plate 51, and the other end passes through the cavity 8 and is located outside the cavity 8. In an emergency, the experimenter can open the door cover 7 by pulling the unlocking rope.

[0030] Figure 11 This is a schematic diagram of the centrifuge heat dissipation air duct provided in Embodiment 3 of the present invention. Figure 12 This is a cross-sectional view of the centrifuge provided in Embodiment 3 of the present invention. Figure 10 , Figure 11 and Figure 12 As shown, the door cover 7 can pivot relative to the cavity 8 about an axis. The door cover 7 and the cavity 8 form an enclosed space, in which components such as the rotor 9, motor 10, centrifuge chamber 11, and cooling fan 12 are housed. The latch 1 is fixed to the middle of the front end of the door cover 7, and the mounting plate 2 is fixed to the middle of the front end of the cavity 8 by screws on its top surface. When the door cover 7 is closed, the latch 1 and the mounting plate 2 are aligned. The motor 10 includes a drive part and a drive shaft part. One end of the motor 10 is fixed to the bottom of the cavity 8, and the other end of the motor 10 passes through the bottom of the centrifuge chamber 11. When the rotor 9 is mounted on the motor 10, it is located inside the centrifuge chamber 11. The cooling fan 12 is located between the centrifuge chamber 11 and the rear panel of the cavity 8. Ventilation holes 81 are respectively opened at the rear ends of the left and right side panels of the cavity 8, and the ventilation holes 81 are positioned relative to the cooling fan 12. Under the action of the cooling fan 12, the air outside the centrifuge enters through the ventilation hole 81 on one side of the cavity 8 and is discharged through the ventilation hole 81 on the other side.

[0031] As an embodiment of the present invention, an air inlet is provided at the rear end of the door cover 7, and air outlets are provided around the bottom of the cavity 8, which supports the motor 10, to form a heat dissipation duct. Figure 11 As shown, air at room temperature enters through the air inlet of the door cover 7 and is guided to the top of the rotor 9. When the motor 10 drives the rotor 9 to rotate at high speed, the air around the rotor 9 rises and flows out from the periphery of the centrifugal chamber 11. Then it passes down through the motor 10 and is discharged from the air outlet of the chamber 8, thus completing the heat dissipation of the rotor 9 and the motor 10. Figure 11 The arrows in the image indicate the direction of wind flow.

[0032] To improve the heat dissipation efficiency of the rotor 9 and motor 10, as another embodiment of the present invention, the aforementioned air inlet and outlet are blocked, and a refrigeration system (not shown in the figure) is installed in the cavity 8 to cool the rotor 9, motor 10, and centrifugal cavity 11. The ventilation hole 81 completes the heat dissipation of the refrigeration system.

[0033] In this embodiment of the invention, a sliding strip fixed relative to the mounting plate and a first sliding groove on the motor mount are matched to form a motor and a locking pin that can move relative to the mounting plate. When the door lock hook assembly is inserted into the latch and emergency unlocking is required, the motor mount is pulled to move the motor and locking pin fixed thereon relative to the mounting plate. The locking pin releases the door lock hook assembly, and after the door lock hook assembly resets, it retracts from the latch to unlock. The force required to pull the motor mount during emergency unlocking depends on the force between the motor mount and the mounting plate and is unrelated to the motor's self-locking force. Emergency unlocking is effortless and compatible with motors of different specifications.

[0034] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A door lock device, characterized in that, include: Locking tongue (1); Mounting plate (2); Door lock hook assembly (3) and drive assembly (4) are provided on the mounting plate (2); The drive assembly (4) includes a motor (42) and a locking pin (43); the motor (42) drives the locking pin (43) to translate and slide relative to the mounting plate (2), and the sliding direction is parallel to the translation direction of the locking pin (43); When the drive assembly (4) holds the door lock hook assembly (3) in the locked position by the locking pin (43), it pulls the motor (42) to make the motor (42) and the locking pin (43) translate relative to the mounting plate (2), the locking pin (43) releases the door lock hook assembly (3), and the door lock hook assembly (3) resets and exits the latch (1) to unlock.

2. The door lock device according to claim 1, characterized in that, The drive assembly (4) further includes a motor base (41) and a slide bar (44); the motor (42) is fixed to the motor base (41), and a first slide groove (1000) is provided on the side of the motor base (41) opposite to the mounting plate (2). The slide bar (44) is disposed in the first slide groove (1000) and fixed to the mounting plate (2). The extension direction of the first slide groove (1000) is parallel to the translation direction of the locking pin (43).

3. The door lock device according to claim 2, characterized in that, It also includes an emergency unlocking component (5), which includes an unlocking plate (51), a first shaft (52) and a first pin (53); The first shaft (52) is fixed to the motor base (41), the first pin (53) is fixed to the mounting plate (2), and the line connecting the projections of the first shaft (52) and the first pin (53) on the motor base (41) is parallel to the extension direction of the first slide groove (1000). The unlocking plate (51) is rotatably connected to the motor base (41) via the first shaft (52). When the unlocking plate (51) hooks the first pin (53), the motor base (41), the unlocking plate (51), and the mounting plate (2) are relatively fixed. When the unlocking plate (51) disengages from the first pin (53), the motor base (41) can translate relative to the mounting plate (2).

4. The door lock device according to claim 3, characterized in that, The emergency unlocking assembly (5) also includes a second shaft (54) fixed to the motor base (41). The unlocking plate (51) has a limiting groove (4000), and the second shaft (54) passes through the limiting groove (4000). When the unlocking plate (51) rotates relative to the first shaft (52), the limiting groove (4000) is limited by the second shaft (54).

5. The door lock device according to claim 3, characterized in that, The mounting plate (2) has a third groove (3000); the first shaft (52) passes through the third groove (3000).

6. The door lock device according to claim 5, characterized in that, The first pin (53) is fixed to the side of the mounting plate (2) away from the motor base (41), and the unlocking plate (51) is rotatably connected to the motor base (41) through the end of the first shaft (52) away from the motor base (41).

7. The door lock device according to any one of claims 2-6, characterized in that, It also includes a second elastic element (6), the first end of which is fixed to the motor base (41), and the second end of which is fixed to the mounting plate (2).

8. The door lock device according to any one of claims 2-6, characterized in that, The drive assembly (4) also includes a gear (45) and a rack (46) that mesh with each other, and the motor mount (41) is provided with a second slide groove (2000). The rack (46) is disposed in the second slide groove (2000), and the locking pin (43) is fixed to the rack (46); The motor (42) drives the gear (45) to rotate so as to drive the rack (46) and the locking pin (43) to translate.

9. The door lock device according to claim 8, characterized in that, The teeth of the rack (46) and the locking pin (43) are located on opposite sides of the rack (46).

10. A centrifuge, characterized in that, The centrifuge includes a door cover (7), a cavity (8), and a door lock device as described in any one of claims 1-9, wherein the latch (1) is fixed to the door cover (7) and the mounting plate (2) is fixed to the cavity (8).

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