Door lock device and centrifugal machine

Abstract

The door lock device provided by the embodiment of the invention comprises a spring bolt, 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 can 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 at the locking position through the locking column, the motor is pulled so that the motor and the locking column can move horizontally relative to the mounting plate, the locking column loosens the door lock hook assembly, and the lock tongue retreats after the door lock hook assembly is reset so that unlocking can be achieved. When emergency unlocking is needed, the motor is pulled to enable the motor and the locking column to translate relative to the mounting plate, the locking column loosens the door lock hook assembly, the door lock hook assembly retreats from the spring bolt for unlocking after resetting, and the force for pulling the motor during 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] The present invention relates to the technical field of centrifuges, and in particular to a door lock device and a centrifuge. Background Art

[0002] Centrifuges are instruments used to separate biological samples and are widely used in life sciences, medicine, chemistry, environmental protection and other fields. For safety reasons, the door cover of the centrifuge is not allowed to be opened when the centrifuge rotor is rotating at high speed; the door cover of the centrifuge cannot be easily opened when there are fragments flying inside the centrifuge cavity or a malfunction occurs. However, it is required to be able to unlock the door cover urgently when the motor does not work properly.

[0003] The prior art uses a motor drive to achieve door cover locking and unlocking. When the motor fails to work properly, the experimenter uses a mechanical drive to overcome the motor's self-locking force to open the door cover. For a motor with a large self-locking force, it is necessary to overcome the large motor self-locking force to open the door cover. Summary of the invention

[0004] The embodiment of the present invention provides a door lock device, which aims to solve the problem in the prior art that it is laborious to use a large self-locking force motor to unlock a door cover in an emergency.

[0005] In a first aspect, a door lock device is provided, comprising: Lock tongue (1); Mounting plate (2); A door lock hook assembly (3) and a drive assembly (4) arranged on the mounting plate (2); The drive assembly (4) comprises a motor (42) and a locking column (43); the motor (42) drives the locking column (43) to translate and slide relative to the mounting plate (2), and the sliding direction is parallel to the translation direction of the locking column (43); When the driving component (4) maintains the door lock hook component (3) in a locked position via the locking column (43), the motor (42) is pulled to make the motor (42) and the locking column (43) translate relative to the mounting plate (2), the locking column (43) releases the door lock hook component (3), and the door lock hook component (3) is reset and then withdraws from the lock tongue (1) to unlock.

[0006] In a second aspect, a centrifuge is provided, comprising a door cover (7), a cavity (8) and the door lock device described above, wherein the lock tongue (1) is fixed to the door cover (7) and the mounting plate (2) is fixed to the cavity (8).

[0007] The embodiment of the present invention is provided with a motor and a locking column that can be translated relative to the mounting plate. When the door lock hook assembly is inserted into the lock tongue and emergency unlocking is required, the motor is pulled to make the motor and the locking column translate relative to the mounting plate, and the locking column releases the door lock hook assembly. After the door lock hook assembly is reset, the lock tongue is withdrawn to unlock. The force used to pull the motor during emergency unlocking depends on the force between the motor and the mounting plate and has nothing to do with the self-locking force of the motor. The emergency unlocking operation is effortless and is compatible with motors of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Figure 1 is a schematic diagram of a door lock device provided in Embodiment 1 of the present invention; Figure 2 is a schematic diagram of a door lock hook assembly provided in Embodiment 1 of the present invention; Figure 3 is a schematic diagram of a door lock hook assembly provided in the first embodiment of the present invention in a locked state; Figure 4 is an exploded view of a drive assembly provided in Embodiment 1 of the present invention; Figure 5 is another exploded view of the drive assembly provided in the first embodiment of the present invention; Figure 6 is a schematic diagram of an emergency unlocking assembly provided in Embodiment 2 of the present invention; Figure 7 is a partial schematic diagram of an emergency unlocking assembly provided in Embodiment 2 of the present invention; Figure 8 is an exploded view of the emergency unlocking assembly provided in the second embodiment of the present invention; Fig. 9 is another schematic diagram of the emergency unlocking assembly provided in the second embodiment of the present invention; Fig.10 is a schematic diagram of a centrifuge provided in Embodiment 3 of the present invention; Fig.11 is a schematic diagram of a centrifuge heat dissipation duct provided in Embodiment 3 of the present invention; Fig.12 It is a cross-sectional view of a centrifuge provided in Embodiment 3 of the present invention. DETAILED DESCRIPTION

[0009] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar modules or modules with the same or similar functions. The embodiments described below by reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limitations of the present invention. On the contrary, embodiments of the present invention include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0010] The embodiment of the present invention is provided with a motor and a locking column that can be translated relative to the mounting plate. When the door lock hook assembly is inserted into the lock tongue and emergency unlocking is required, the motor is pulled to make the motor and the locking column translate relative to the mounting plate, and the locking column releases the door lock hook assembly. After the door lock hook assembly is reset, the lock tongue is withdrawn to unlock. The force used to pull the motor during emergency unlocking depends on the force between the motor and the mounting plate and has nothing to do with the self-locking force of the motor. The emergency unlocking operation is effortless and is compatible with motors of different specifications. Embodiment 1

[0011] Figure 1 Schematic diagram of a door lock device provided in Embodiment 1 of the present invention. Figure 2 Schematic diagram of a door lock hook assembly provided in Embodiment 1 of the present invention. Figure 3 FIG. 1 is a schematic diagram of a door lock hook assembly provided in the first embodiment of the present invention in a locked state. Figure 1 , Figure 2 and Figure 3 As shown, the door lock device includes a lock tongue 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 which 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. A notch is provided at the top of the mounting plate 2 for the lock tongue 1 to enter or exit. The door lock hook assembly 3 and the drive assembly 4 are arranged on the mounting plate 2. In the embodiment of the present invention, the door lock hook assembly 3 and the drive assembly 4 are arranged in the space between the first fixing plate 21 and the second fixing plate 22. Figure 3 The schematic diagram of the door lock hook assembly 3 in the locked state after the first fixing plate 21 is hidden. When the door lock hook assembly 3 is in the locked position, the door lock hook assembly 3 is fixed by the driving assembly 4 to maintain it in the locked position, and the door lock hook assembly 3 is inserted into the lock tongue 1. The driving assembly 4 releases the door lock hook assembly 3, and the door lock hook assembly 3 reaches the unlocked position after resetting, and the door lock hook assembly 3 withdraws from the lock tongue 1. When the door lock hook assembly 3 is in the unlocked position, the lock tongue 1 can freely drop or rise. In the embodiment of the present 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 kept in the unlocked position under the action of the elastic member (not shown in the figure), and can be rotated to the locked position under the action of the lock tongue 1, the driving assembly 4 and the elastic member (not shown in the figure).

[0012] Figure 4It is an exploded view of the drive assembly provided in the first embodiment of the present invention. Figure 5 FIG. 1 is another exploded view of the drive assembly provided in Embodiment 1 of the present invention. Figure 4 and Figure 5 As shown, the drive assembly 4 includes a motor 42 and a locking column 43. The motor 42 drives the locking column 43 to translate and slide relative to the mounting plate 2, and the sliding direction is parallel to the translation direction of the locking column 43. Preferably, the drive assembly 4 also includes a motor seat 41 and a slide bar 44. The motor 42 is fixed to the motor seat 41 by means of screws or the like and can drive the locking column 43 to translate. The motor 42 can drive the locking column 43 to translate by means of a screw rod, a transmission belt, a gear rack, etc., which are not limited here. A first slide groove 1000 is provided on the side of the motor seat 41 opposite to the mounting plate 2, and the slide bar 44 is arranged in the first slide groove 1000 and fixed to the mounting plate 2 by means of screws or the like, and the extension direction of the first slide groove 1000 is parallel to the translation direction of the locking column 43. Preferably, the cross-sections of the first slide groove 1000 and the slide bar 44 are both T-shaped, and the shapes of the two match and can produce relative sliding, and the slide bar 44 is fixed to the second fixed plate 22.

[0013] In a non-emergency state, the first slide groove 1000 and the slide bar 44 are relatively stationary, the lock tongue 1 descends, and the locking column 43 translates under the drive of the motor 42, abutting against the door lock hook assembly 3 or leaving 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 driving assembly 4 maintains the door lock hook assembly 3 in a locked position through the locking column 43 but the motor 42 cannot work normally, the mounting plate 2 and the slide bar 44 remain stationary, and the motor seat 41 is pulled. At this time, the motor 42 and the locking column 43 are fixed to the motor seat 41 and become a whole with the motor seat 41. The first slide groove 1000 translates relative to the slide bar 44, so that the motor 42 and the locking column 43 fixed on the motor seat 41 translate relative to the mounting plate 2. At this time, the translation direction of the locking column 43 is opposite to the translation direction of the locking column 43 against the door lock hook assembly 3, so that the locking column 43 can release the door lock hook assembly 3, and the door lock hook assembly 3 is reset and then withdraws from the lock tongue 1 to achieve unlocking. The structure of the door lock hook assembly 3 can adopt the existing design or a separate design. The structure of the locking column 43 abutting the door lock hook assembly 3 can be realized by the combination of pins, grooves, etc., which is not limited here.

[0014] The force for pulling the motor seat 41 may be a force that overcomes the friction between the first slide groove 1000 and the slide bar 44, or other forces. As an embodiment of the present invention, the door lock device further includes a second elastic member 6, a first end of the second elastic member 6 is fixed to the motor seat 41, and a second end of the second elastic member 6 is fixed to the mounting plate 2. The force for pulling the motor seat 41 is mainly a force that overcomes the second elastic member 6, and the force for pulling the motor seat 41 can be adjusted by changing the elastic coefficient of the second elastic member 6.

[0015] In order to facilitate pulling the motor seat 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 seat 41, and pulling the unlocking rope can cause the motor seat 41 to translate.

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

[0017] In the embodiment of the present invention, the driving assembly 4 further includes a gear 45 and a rack 46 meshing with each other. The motor seat 41 is provided with a second slide slot 2000, the rack 46 is arranged in the second slide slot 2000, and the locking column 43 is fixed to the rack 46. The motor 42 is connected to the gear 45, and the driving gear 45 rotates to drive the rack 46 and the locking column 43 to translate.

[0018] In order to make the structure of the driving assembly 4 more compact, as an embodiment of the present invention, the teeth of the rack 46 and the locking column 43 are located on opposite sides of the rack 46. Preferably, the cross section of the rack 46 is an I-shaped, the locking column 43 is arranged above the rack 46, and the teeth of the rack 46 are arranged below the rack 46. The rack 46 is suspended in the second slide groove 2000, and the gear 45 passes through the hole on the motor seat 41 and meshes with the rack 46.

[0019] The embodiment of the present invention matches the sliding bar fixed relatively to the mounting plate and the first sliding groove on the motor seat, and sets a motor and a locking column that can be translated relative to the mounting plate. When the door lock hook assembly is inserted into the lock tongue and emergency unlocking is required, the motor seat is pulled to make the motor and the locking column fixed thereon translate relative to the mounting plate, and the locking column releases the door lock hook assembly. After the door lock hook assembly is reset, the lock tongue is withdrawn to unlock. The force used to pull the motor seat during emergency unlocking depends on the force between the motor seat and the mounting plate and has nothing to do with the self-locking force of the motor. The emergency unlocking operation is effortless and compatible with motors of different specifications. Embodiment 2

[0020] In the embodiment of the present invention, the basic structure of the door lock device is the same as that of the first embodiment, and the same components as the first embodiment use the same reference numerals as the first embodiment, including all the features described in the first embodiment, which will not be repeated here.

[0021] Figure 6 Schematic diagram of the emergency unlocking assembly provided in the second embodiment of the present invention. Figure 7 It is a partial schematic diagram of the emergency unlocking assembly provided in the second embodiment of the present invention. Figure 8 It is an exploded view of the emergency unlocking assembly provided in the second embodiment of the present invention. Fig. 9 2 is another schematic diagram of the emergency unlocking assembly provided by the second embodiment of the present invention. Figures 1 to 9In an embodiment of the present invention, the door lock device further includes an emergency unlocking assembly 5. The emergency unlocking assembly 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 seat 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 is rotatably connected to the motor seat 41 through the first shaft 52, and can 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 seat 41. The connecting line of the projection of the first shaft 52 and the first pin 53 on the motor seat 41 is parallel to the extension direction of the first slide groove 1000.

[0022] The unlocking plate 51 rotates around the first axis 52 in the direction of the first pin 53 under the action of the first elastic member 55. When the unlocking plate 51 hooks the first pin 53, the motor seat 41, the unlocking plate 51 and the mounting plate 2 are relatively fixed, and the motor seat 41 and the mounting plate 2 cannot slide relative to each other along the extension direction of the first slide slot 1000. The unlocking plate 51 is pulled to rotate around the first axis 52 in the direction away from the first pin 53. When the unlocking plate 51 is disengaged from the first pin 53, the motor seat 41 can translate relative to the mounting plate 2.

[0023] In a non-emergency state, the door lock hook assembly 3 rotates and is fixed under the action of the driving assembly 4 so that it is inserted into the lock tongue 1. In this process, if the rotation or fixation resistance of the door lock hook assembly 3 is too large due to other components, the motor seat 41 will be forced to slide in the opposite direction, and there is a tendency for the locking column 43 to loosen the door lock hook assembly 3 and the door lock hook assembly 3 to withdraw from the lock tongue 1, resulting in locking failure. In a non-emergency state, the unlocking plate 51 hooks the first pin 53 to ensure that the motor seat 41 and the mounting plate 2 are relatively stationary, avoiding the occurrence of locking failure due to excessive rotation or fixation resistance of the door lock hook assembly 3.

[0024] In order 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; accordingly, the unlocking plate 51 is provided with a limiting groove 4000. The second shaft 54 ​​is passed 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. The unlocking plate 51 is pulled to separate from the first pin 53. After the unlocking plate 51 rotates to the limit position in the direction away from the first pin 53, it can no longer rotate relative to the motor seat 41 around the first axis 52, and the unlocking plate 51 and the motor seat 41 become a whole. The unlocking plate 51 is pulled continuously, and the motor seat 41 slides relatively along the extension direction of the first slide groove 1000, that is, the motor seat 41 slides in the direction opposite to the direction in which the locking column 43 translates to abut against the door lock hook assembly 3, thereby driving the locking column 43 to translate, so that the locking column 43 releases the door lock hook assembly 3, and the door lock hook assembly 3 is reset to the unlocking position and then withdraws from the lock tongue 1. The second axis 54 limits the limiting groove 4000 to the limit that the unlocking plate 51 can completely separate from the first pin 53. Further, in order to better fix the first axis 52 and the second axis 54, the emergency unlocking assembly 5 also includes a cover plate 56.

[0025] The process of pulling the unlocking plate 51 for emergency unlocking 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 member 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 member 6. The force pulling the unlocking plate 51 can be adjusted by changing the elastic coefficients of the first elastic member 55 and the second elastic member 6.

[0026] Figure 7The figure is a partial schematic diagram of the emergency unlocking assembly after the unlocking plate 51 and the cover plate 56 are hidden. In the embodiment of the present invention, the mounting plate 2 is provided with a third slide groove 3000, and the extension direction of the third slide groove 3000 is parallel to the extension direction of the first slide groove 1000. The first shaft 52 and the second shaft 54 ​​are inserted into the third slide groove 3000. The first pin 53 is fixed to the side of the mounting plate 2 away from the motor seat 41, and the unlocking plate 51 is rotatably connected to the motor seat 41 through the end of the first shaft 52 away from the motor seat 41. Preferably, the door lock hook assembly 3 and the motor seat 41 are arranged in the space between the first fixed plate 21 and the second fixed plate 22, the slide bar 44 is fixed to the second fixed plate 22, and the motor 42 is arranged on the side of the motor seat 41 away from the second fixed plate 22. The third slide groove 3000 is provided in the second fixed plate 22, and the first shaft 52 and the second shaft 54 ​​are inserted into the third slide groove 3000 and exposed to the outside of the second fixed plate 22. The first pin 53 is fixed to the outside of the second fixed plate 22. The unlocking plate 51 is arranged on the outer side of the second fixing plate 22, and is rotatably connected to the motor base 41 through the end of the first shaft 52 away from the motor base 41. The parts included in the emergency unlocking assembly 5 are arranged on the outer side of the mounting plate 2, so that the parts included in the driving assembly 4 have more sufficient space to be arranged on the inner side of the mounting plate 2.

[0027] The embodiment of the present invention matches the sliding bar fixed relatively to the mounting plate and the first sliding groove on the motor seat, and sets a motor and a locking column that can be translated relative to the mounting plate. When the door lock hook assembly is inserted into the lock tongue and emergency unlocking is required, the motor seat is pulled to make the motor and the locking column fixed thereon translate relative to the mounting plate, and the locking column releases the door lock hook assembly. After the door lock hook assembly is reset, the lock tongue is withdrawn to unlock. The force used to pull the motor seat during emergency unlocking depends on the force between the motor seat and the mounting plate and has nothing to do with the self-locking force of the motor. The emergency unlocking operation is effortless and compatible with motors of different specifications. Embodiment 3

[0028] In the embodiment of the present invention, the basic structure of the door lock device is the same as that of Embodiment 1 or Embodiment 2, and the components that are the same as those of Embodiment 1 or Embodiment 2 use the same labels as those of 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 the embodiment of the present invention comprises a door cover 7, a cavity 8 and the door lock device described in the first embodiment or the second embodiment. Fig.10 Schematic diagram of a centrifuge provided in Embodiment 3 of the present invention. Fig.10As shown, the lock tongue 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 toward the cavity 8, the lock tongue 1 and the mounting plate 2 are in corresponding positions, and the above-mentioned locking or unlocking process is performed together with other components of the door lock device. One end of the unlocking rope (not shown in the figure) is connected to the motor seat 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] Fig.11 It is a schematic diagram of the heat dissipation duct of the centrifuge provided in the third embodiment of the present invention. Fig.12 is a cross-sectional view of a centrifuge provided in Embodiment 3 of the present invention. Fig.10 , Fig.11 and Fig.12 As shown, the door cover 7 can pivot relative to the cavity 8 around an axis. The door cover 7 and the cavity 8 form an enclosed space, and the components such as the rotor 9, the motor 10, the centrifugal chamber 11 and the cooling fan 12 are contained in the enclosed space. The lock tongue 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 lock tongue 1 and the mounting plate 2 correspond to each other. The motor 10 includes a driving part and a driving 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 centrifugal chamber 11. When the rotor 9 is loaded on the motor 10, it is located in the centrifugal chamber 11. The cooling fan 12 is arranged between the centrifugal chamber 11 and the rear panel of the cavity 8, and 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 arranged relative to the cooling fan 12. Under the action of the cooling fan 12, wind outside the centrifuge enters from the ventilation holes 81 on one side of the cavity 8 and is discharged from the ventilation holes 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 an air outlet is provided around the bottom of the cavity 8 supporting the motor 10 to form a heat dissipation duct. Fig.11 As shown, air at room temperature enters from 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 the air flows out from the surrounding of the centrifugal chamber 11, and then passes downward through the motor 10 and is discharged from the air outlet of the cavity 8, thereby completing the heat dissipation of the rotor 9 and the motor 10. Fig.11 The arrows in the figure show the direction of wind flow.

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

[0033] The embodiment of the present invention matches the sliding bar fixed relatively to the mounting plate and the first sliding groove on the motor seat, and sets a motor and a locking column that can be translated relative to the mounting plate. When the door lock hook assembly is inserted into the lock tongue and emergency unlocking is required, the motor seat is pulled to make the motor and the locking column fixed thereon translate relative to the mounting plate, and the locking column releases the door lock hook assembly. After the door lock hook assembly is reset, the lock tongue is withdrawn to unlock. The force used to pull the motor seat during emergency unlocking depends on the force between the motor seat and the mounting plate and has nothing to do with the self-locking force of the motor. The emergency unlocking operation is effortless and compatible with motors of different specifications.

[0034] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A door lock device, characterized in that: include: Lock tongue (1); Mounting plate (2); A door lock hook assembly (3) and a drive assembly (4) arranged on the mounting plate (2); The driving assembly (4) comprises a motor (42) and a locking column (43); the motor (42) drives the locking column (43) to translate and slide relative to the mounting plate (2), and the sliding direction is parallel to the translation direction of the locking column (43); When the driving assembly (4) maintains the door lock hook assembly (3) in a locked position via the locking column (43), the motor (42) is pulled to make the motor (42) and the locking column (43) translate relative to the mounting plate (2), and the locking column (43) releases the door lock hook assembly (3), and the door lock hook assembly (3) is reset and then withdraws from the lock tongue (1) to unlock.

2. The door lock device according to claim 1, characterized in that: The driving assembly (4) further comprises a motor seat (41) and a slide bar (44); the motor (42) is fixed to the motor seat (41); a first slide groove (1000) is provided on a side of the motor seat (41) opposite to the mounting plate (2); the slide bar (44) is arranged in the first slide groove (1000) and is fixed to the mounting plate (2); and an extension direction of the first slide groove (1000) is parallel to a translation direction of the locking column (43).

3. The door lock device according to claim 2, characterized in that: It also includes an emergency unlocking assembly (5), wherein the emergency unlocking assembly (5) includes an unlocking plate (51), a first shaft (52) and a first pin (53); The first shaft (52) is fixed to the motor seat (41), the first pin (53) is fixed to the mounting plate (2), and a line connecting the projections of the first shaft (52) and the first pin (53) on the motor seat (41) is parallel to an extension direction of the first slide groove (1000); The unlocking plate (51) is rotatably connected to the motor seat (41) via the first shaft (52); when the unlocking plate (51) hooks the first pin (53), the motor seat (41), the unlocking plate (51) and the mounting plate (2) are relatively fixed; when the unlocking plate (51) is disengaged from the first pin (53), the motor seat (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) further comprises a second shaft (54) fixed to the motor base (41); the unlocking plate (51) is provided with a limiting groove (4000); 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) is provided with a third sliding groove (3000); the first shaft (52) is passed through the third sliding groove (3000).

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

7. The door lock device according to any one of claims 1 to 6, characterized in that: It also comprises a second elastic member (6), wherein a first end of the second elastic member (6) is fixed to the motor base (41), and a second end of the second elastic member (6) is fixed to the mounting plate (2).

8. The door lock device according to any one of claims 1 to 6, characterized in that: The driving assembly (4) further comprises a gear (45) and a rack (46) meshing with each other, and the motor base (41) is provided with a second slide groove (2000); The rack (46) is disposed in the second sliding groove (2000), and the locking column (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 column (43) to translate.

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

10. A centrifuge, characterized in that: The centrifuge comprises a door cover (7), a cavity (8) and a door lock device according to any one of claims 1 to 9, wherein the lock tongue (1) is fixed to the door cover (7), and the mounting plate (2) is fixed to the cavity (8).

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