CN111659544A - Be applied to lid locking device and centrifuge of centrifuge - Google Patents
Be applied to lid locking device and centrifuge of centrifuge Download PDFInfo
- Publication number
- CN111659544A CN111659544A CN202010440881.4A CN202010440881A CN111659544A CN 111659544 A CN111659544 A CN 111659544A CN 202010440881 A CN202010440881 A CN 202010440881A CN 111659544 A CN111659544 A CN 111659544A
- Authority
- CN
- China
- Prior art keywords
- nut
- screw
- switch
- screw rod
- locking device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009434 installation Methods 0.000 claims description 26
- 238000004891 communication Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 description 6
- 238000005192 partition Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/02—Casings; Lids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B15/00—Other accessories for centrifuges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/02—Casings; Lids
- B04B7/06—Safety devices ; Regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/02—Casings; Lids
- B04B2007/025—Lids for laboratory centrifuge rotors
Landscapes
- Centrifugal Separators (AREA)
Abstract
The invention discloses a cover body locking device applied to a centrifugal machine and the centrifugal machine, wherein the cover body locking device comprises a nut component, a screw rod component and a control component; the nut assembly is arranged on the cover body and comprises a nut; the screw assembly is arranged on the shell and comprises a screw and a driving part for driving the screw to move; the control assembly comprises a trigger part and a switch part, and the switch part is communicated with the driving part; when the cover is closed, the nut moves towards the direction close to the screw rod, the nut drives the trigger part to move towards the direction close to the switch part, when the trigger part triggers the switch part, the switch part transmits an instruction to the driving part, and the driving part drives the screw rod to rotate and screw into the nut to be locked with the nut; when the cover is opened, the driving part drives the screw rod to rotate reversely and unscrew from the nut. The cover body locking device can realize reliable locking between the cover body and the shell body and tensioning after locking.
Description
Technical Field
The invention relates to the technical field of centrifuges, in particular to a cover body locking device applied to a centrifuge and the centrifuge.
Background
The centrifugal machine mainly comprises a rotor and a driving device, and a sample is placed in the rotor to rotate at a high speed, so that the components of the sample are separated from each other. Because rotor rotational speed is higher, can produce when the rotor slippage or damage and splash and the impact very much, in order to guarantee equipment and personal safety, centrifuge need reliably lock the lid under operating condition. In addition, the isolation type and refrigeration type centrifuges need to seal the whole centrifugal cavity, so that the cover body needs to be tensioned after being locked.
At present, the prior art mostly adopts a hook lock rod structure to realize the locking of the cover body, and has the following defects: firstly, the hook is provided with an opening on one side, and the structure is in danger of unhooking after vibration or impact; secondly, the structure can not realize the tensioning action after locking and can not be applied to the centrifuge needing to be sealed.
The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.
Disclosure of Invention
In order to solve the problems pointed out in the background art, the invention provides a cover body locking device applied to a centrifugal machine and the centrifugal machine, which are used for realizing reliable locking of a cover body and tensioning after locking.
In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:
the invention provides a cover body locking device applied to a centrifugal machine, wherein the centrifugal machine comprises a cover body and a shell, and the cover body locking device comprises: the nut assembly is arranged on the cover body and comprises a nut; the screw assembly is arranged on the shell and comprises a screw and a driving part for driving the screw to move; a control assembly including a trigger portion and a switch portion, the switch portion in communication with the drive portion; when the cover is closed, the nut moves towards the direction close to the screw rod, the nut drives the trigger part to move towards the direction close to the switch part, when the trigger part triggers the switch part, the switch part transmits an instruction to the driving part, and the driving part drives the screw rod to rotate, screw into the nut and lock with the nut; when the cover is opened, the driving part drives the screw rod to rotate reversely and unscrew from the nut.
In some embodiments of the present application, the trigger part has a first trigger part and a second trigger part, and the switch part includes a first switch and a second switch; when the trigger part moves towards the direction close to the switch part, the first trigger part triggers the first switch firstly, the first switch sends an instruction to the driving part to enable the driving part to be started, then the second trigger part triggers the second switch, and the second switch sends an instruction to the driving part to enable the driving part to be stopped.
In some embodiments of the present application, the control assembly further includes a connecting portion, the connecting portion is sleeved on the periphery of the screw rod, and the connecting portion is connected with the triggering portion; the nut is close to the one end of screw rod has no screw thread section, the nut towards be close to when the direction motion of screw rod, the nut with connecting portion support to make connecting portion follow the axial direction motion of screw rod, no screw thread section cover is located the periphery of screw rod, works as the nut continues towards be close to the direction motion of screw rod extremely the internal thread of nut with when the external screw thread contact of screw rod, first trigger part triggers first switch.
In some embodiments of the present application, the screw assembly further includes a first housing, a first mounting cavity is formed inside the first housing, the screw rotatably penetrates through the first mounting cavity, a slot communicated with the first mounting cavity is formed in the first housing, and the triggering portion extends out of the slot to the outside of the first mounting cavity and acts on the switch portion; the first installation cavity is internally provided with a first reset part, and the first reset part is used for providing reset force for the connecting part.
In some embodiments of this application, the nut component still includes the second casing, the second casing with the lid is connected, the inside of second casing is formed with the second installation cavity, the one end of nut is located in the second installation cavity, the nut can be followed the axial direction motion of second installation cavity, be equipped with the second portion that resets in the second installation cavity, the second portion that resets be used for to the nut provides reset force.
In some embodiments of the present application, the cover locking device further comprises: the unlocking assembly comprises a rack and a gear, the gear sleeve is arranged on the screw, during unlocking, the rack is pulled to enable the rack to be meshed with the gear, the rack drives the gear to rotate, and the gear drives the screw to rotate and then to be screwed out of the nut.
In some embodiments of the present application, the unlocking assembly further comprises a one-way bearing disposed between the gear and the screw.
In some embodiments of this application, the unblock subassembly still includes the third casing, be formed with the third installation cavity in the third casing, the third installation cavity is followed the axial direction of screw rod extends, the screw rod is kept away from the one end of nut with the gear all is located in the third installation cavity, the rack is located on the third casing and can follow with third installation cavity vertically direction motion, the rack has sawtooth section and toothless section, the sawtooth section can with gear engagement.
In some embodiments of the present application, the unlocking assembly further includes a third reset portion for providing a reset force to the rack.
The invention also provides a centrifuge, which comprises the cover body locking device applied to the centrifuge.
Compared with the prior art, the invention has the advantages and positive effects that:
the utility model discloses a lid locking device passes through nut component and screw rod component and realizes the locking between lid and the casing, and the screw thread locking structure between nut and the screw rod has self-locking function, and at centrifuge during operation, this screw thread locking structure has characteristics such as stronger antidetonation, shock resistance, satisfies centrifuge's work demand. Meanwhile, the cover body has the tendency of continuously moving towards the shell side through the continuous screw-in nut of the screw rod, devices such as the sealing strip are arranged between the cover body and the shell, sealing between the cover body and the shell can be achieved, the cover body locking device can be suitable for a centrifuge needing sealing, and the applicability of the device is improved.
The cover body locking device disclosed by the application realizes automatic cover opening and closing through the control assembly, and is more convenient to operate.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a centrifuge according to an embodiment;
FIG. 2 is a cross-sectional view of a cover closure according to an embodiment;
FIG. 3 is a schematic structural view of a cover closure according to an embodiment;
FIG. 4 is a partial cross-sectional view of FIG. 3;
FIG. 5 is a schematic structural view of a cover closure according to an embodiment from another perspective;
FIG. 6 is a schematic structural diagram of the cover locking device according to the embodiment, with the first housing, the second housing, and the third housing omitted;
FIG. 7 is an assembly structural view of a connecting portion and a trigger portion according to an embodiment;
fig. 8 is a schematic structural diagram of an unlocking assembly according to an embodiment.
Reference numerals:
100-nut component, 110-nut, 111-unthreaded section, 112-internal thread, 113-projection, 120-second shell, 121-guide groove, 122-second mounting cavity, 130-second reset part;
200-screw assembly, 210-screw, 211-screw section, 212-screw section, 213-step section, 214-external thread, 220-drive section, 221-coupler, 230-first housing, 231-first mounting cavity, 2311-first mounting cavity i, 2312-first mounting cavity ii, 2313-partition, 240-first reset section, 250-first mounting plate, 251-slot, 260-second mounting plate;
300-control component, 310-trigger, 311-first trigger, 3111-first vertical segment, 3112-first diagonal segment, 312-second trigger, 3121-second vertical segment, 3122-second diagonal segment, 320-switch section, 321-first switch, 322-second switch, 330-controller, 340-connection, 350-connection arm;
400-unlocking assembly, 410-rack, 411-sawtooth section, 412-toothless section, 420-gear, 430-one-way bearing, 440-third shell, 441-third mounting cavity, 442-sliding groove, 443-through hole, 450-third reset part;
500-a cover body;
600-shell, 610-opening.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The cover locking device in this embodiment can be applied to a centrifuge, and referring to fig. 1, the centrifuge includes a cover 500 and a casing 600, and the cover 500 is disposed on an upper portion of the casing 600. After the cover body 500 is fastened with the casing 600, the cover body 500 is fastened and locked with the casing 600 through the cover body locking device, so that the cover body 500 and the casing 600 can be effectively locked when the centrifugal machine is in a working state, and the reliability and the safety of the centrifugal machine are improved.
Referring to fig. 2 to 4, the cover locking device mainly includes a nut assembly 100, a screw assembly 200, and a control assembly 300.
The nut assembly 100 is disposed on the cover 500 and includes a nut 110, and the nut 110 has an internal thread 112.
The screw assembly 200 is disposed on the housing 600, and includes a screw 210 and a driving portion 220, the screw 210 has an external thread 214, the external thread 214 is adapted to the internal thread 112, and the driving portion 220 is used for driving the screw 210 to rotate, so that the screw 210 and the nut 110 are screwed and locked, and further, the cover 500 and the housing 600 are locked and fixed.
The control assembly 300 includes a trigger portion 310 and a switch portion 320, the switch portion 320 communicates with the driving portion 220, and the control assembly 300 is used for controlling the start and stop of the driving portion 220.
When the cover is closed, the cover 500 is manually fastened to the housing 600, the cover 500 is pressed downward to move the nut 110 toward the screw 210, the nut 110 drives the trigger portion 310 to move downward toward the switch portion 320, the cover 500 is continuously pressed, when the trigger portion 310 triggers the switch portion 320, the switch portion 320 transmits an instruction to the driving portion 220, the driving portion 220 drives the screw 210 to rotate and screw into the nut 110 to lock with the nut 110, and fastening and locking between the cover 500 and the housing 600 are achieved.
The thread locking structure between the nut 110 and the screw 210 has a self-locking function, is more reliable, and has the characteristics of stronger shock resistance, impact resistance and the like when the centrifugal machine works, so that the working requirement of the centrifugal machine is met.
Meanwhile, the nut 110 is continuously screwed in through the screw 210, so that the cover body 500 has a tendency of continuously moving towards the shell 600, and a sealing strip and other devices are arranged between the cover body 500 and the shell 600, so that the sealing between the cover body 500 and the shell 600 can be realized, the cover body locking device can be suitable for a centrifuge which needs to be sealed, and the applicability of the device is improved.
When the cover is opened, the control assembly 300 transmits an instruction to the driving part 220, the driving part 220 drives the screw 210 to rotate reversely and unscrew from the nut 110, and the cover opening can be realized.
The driving part 220 in this embodiment is a motor, a coupling 221 is disposed at a power output end of the motor, and the driving part 220 is connected to the screw 210 through the coupling 221.
In some embodiments of the present application, the control assembly 300 further includes a controller 330, the switch portion 320 is in communication with the controller 330, and the controller 330 is in communication with the driving portion 220. In the closing process of the present embodiment, only manual pressing is needed to participate when the cover 500 is fastened to the housing 600, and when the trigger portion 310 moves to the trigger switch portion 320, the subsequent closing process is an automatic process, and manual participation is not needed, and the driving portion 220 automatically stops after the cover 500 is fastened in place.
The case 600 or the cover 500 is provided with a door opening button (not shown) which is also communicated with the controller 330, and when the door is opened, the door opening button is pressed, and after the controller 330 receives the door opening instruction, the controller 330 transmits the door opening instruction to the driving part 220 and reversely rotates the driving part 220 to open the door.
In some embodiments of the present application, referring to fig. 3, the triggering portion 310 is a special-shaped plate-shaped structure, one side of the triggering portion 310 has a first triggering portion 311, the other side of the triggering portion 320 has a second triggering portion 312, and the first triggering portion 311 and the second triggering portion 312 are disposed opposite to each other. The switch section 320 includes two oppositely disposed first and second switches 321, 322, each of the first and second switches 321, 322 being in communication with the controller 330. The trigger end of the first switch 321 faces the first trigger portion 311 side, and the trigger end of the second switch 322 faces the second trigger portion 312 side.
When the cover 500 is pressed downward, the nut 110 moves downward together with the cover 500, and the trigger 310 also moves downward by the nut 110, that is, the trigger 310 moves toward the switch 320. When the trigger 310 moves downward, the first trigger 311 triggers the first switch 321 first, and at this time, the second trigger 312 does not contact the second switch 322, the first switch 321 sends a command to the driving unit 220 through the controller 330 to turn on the driving unit 220, and the driving unit 220 drives the screw 210 to rotate and screw into the nut 110. When the driving portion 220 continues to operate, the cover 500 continuously moves toward the housing 600, that is, the cover 500 continuously moves downward while the screw 210 is continuously screwed into the nut 110, so that the triggering portion 310 also continuously moves downward. Then the second trigger part 312 contacts with the second switch 322 and triggers the second switch 322, at this time, the second switch 322 transmits an instruction to the driving part 220 through the controller 330 to stop the driving part 220, the screw 210 stops rotating, at this time, the cover body 500 and the shell body 600 are buckled in place and locked, and the cover closing is completed.
In this embodiment, referring to fig. 3 and 7, the first triggering portion 311 includes a first vertical section 3111 and a first inclined section 3112 disposed on an upper portion of the first vertical section 3111, and the first inclined section 3112 is inclined toward the first switch 321 side; the second trigger part 312 includes a second vertical section 3121 and a second inclined section 3122 provided at an upper portion of the second vertical section 3121, the second inclined section 3122 being inclined toward the second switch 322 side; the length of the first vertical section 3111 is shorter than the length of the second vertical section 3121.
In the process of downward movement of the trigger portion 310, the first vertical section 3111 and the second vertical section 3121 both move downward along the gap between the first switch 321 and the second switch 322, the first inclined section 3112 touches the first switch 321 first, the trigger portion 310 continues to move downward, and the second inclined section 3122 touches the second switch 322. The time difference between the trigger part 310 sequentially touching the first switch 321 and the second switch 322 is the movement time of the driving part 220, and the locking between the screw 210 and the nut 110 is completed.
By adjusting the height difference between the first switch 321 and the second switch 322 and the height difference between the first inclined section 3112 and the second inclined section 3122, different locking degrees and sealing performances between the cover 500 and the housing 600 can be achieved.
In some embodiments of the present application, the control assembly 300 further includes a connecting portion 340, referring to fig. 4 and 7, the connecting portion 340 is a hollow cylindrical structure, the connecting portion 340 is movably sleeved on the outer circumference of the screw 210, and the connecting portion 340 is fixedly connected to the triggering portion 310 through a connecting arm 350. When the cover 500 is pressed downward, the nut 110 can move downward and is sleeved into the screw 210, and simultaneously, the bottom end surface of the nut 110 abuts against the top end surface of the connecting portion 340, so that the nut 110 can push the connecting portion 340 to move downward together.
In this embodiment, referring to fig. 6 again, one end of the nut 110 close to the screw 210 (i.e. the lower end of the nut 110) has a non-threaded section 111, when the nut 110 moves towards the direction close to the screw 210, the nut 110 can abut against the connecting section 340 to make the connecting section 340 move downward along the axial direction of the screw 210, the non-threaded section 111 is firstly sleeved on the periphery of the screw 210, when the nut 110 continues to move towards the direction close to the screw 210 until the internal thread 112 of the nut contacts the external thread 214 of the screw, the first trigger part 311 moves to a position where the first switch 321 can be triggered, and the driving part 220 is started, so that the screw 210 can rotate and can be smoothly screwed into the nut 110.
The arrangement of the unthreaded section 111 at the lower end of the nut 110 gives, on the one hand, a distance of movement when manually pressing the cap body 500; meanwhile, the unthreaded section 111 also serves as a guide so that the nut 110 can be smoothly threaded with the screw 210.
In some embodiments of the present application, referring to fig. 2 and 4, the screw assembly 200 further includes a first housing 230, a first mounting cavity 231 is formed inside the first housing 230, and the screw 210 is rotatably disposed in the first mounting cavity 231. The section of the screw 210 near the nut 110 has an external thread 214, and the connecting portion 340 is sleeved on the outer circumference of the external thread 214.
In this embodiment, the first housing 230 is a hollow cylindrical structure, the inside of the first housing 230 is provided with a partition 2313, the partition 2313 partitions the first installation cavity 231 into a first installation cavity i 2311 and a first installation cavity ii 2312 which are arranged up and down, and the partition 2313 is provided with a through hole (not shown) which communicates the first installation cavity i 2311 with the first installation cavity ii 2312.
The screw 210 comprises a screw section 211 and a screw section 212; the screw rod section 211 is provided with an external thread 214, and the screw rod section 211 is positioned in the first installation cavity I2311; the screw rod second section 212 is of a smooth rod-shaped structure, and the screw rod second section 212 is located in the first installation cavity II 2312. The nut 110 can extend into the first installation cavity I2311 and is sleeved on the periphery of the screw section 211 in a downward movement mode.
In this embodiment, a first resetting portion 240 is disposed in the first mounting cavity 231, specifically, a first resetting portion 240 is disposed in the first mounting cavity i 2311, the first resetting portion 240 may be a spring, the first resetting portion 240 is sleeved on the screw rod section 211, and the first resetting portion 240 is located between the connecting portion 340 and the partition portion 2313. When the connecting portion 340 moves downward, the first restoring portion 240 is compressed by a force; after the cover is opened, the nut 110 is separated from the connection part 340, and the connection part 340 can be reset under the elastic force of the first reset part 240.
In some embodiments of the present application, a first mounting plate 250 is disposed on the first housing 230, referring to fig. 3, the first switch 321, the second switch 322 and the controller 330 are disposed on the first mounting plate 250, a slot 251 is disposed on the first mounting plate 250, the slot 251 is communicated with the first mounting cavity i 2311, and referring to fig. 7, a connecting arm 350 for connecting the triggering portion 310 and the connecting portion 340 is disposed in the slot 251 and can move up and down along the slot 251.
In some embodiments of the present application, a second mounting plate 260 is further disposed on the first housing 230, and the second mounting plate 260 is fixedly connected to the housing 600 through a screw, so as to mount the screw assembly 200 on the housing 600. Referring to fig. 1 again, the housing 600 is provided with an opening 610, and the opening 610 is communicated with the first mounting cavity i 2311, so that the nut 110 extends into the first mounting cavity i 2311 from the opening 610 and is locked with the screw 210.
In some embodiments of the present application, referring to fig. 2 to 4, the nut assembly 100 further includes a second housing 120, and the second housing 120 is fixedly connected to the cover 500 by a screw, so as to mount the nut assembly 100 on the cover 500. The second housing 120 is formed at an inside thereof with a second mounting cavity 122, an upper end of the nut 110 is positioned in the second mounting cavity 122, the nut 110 is movable in an axial direction of the second mounting cavity 120, and a lower end of the nut 110 protrudes from the second mounting cavity 120 to be engaged with the screw 210 and the connecting portion 340.
Referring to fig. 5, the second housing 120 is provided with a guide groove 121, the nut 110 is correspondingly provided with a protrusion 113, the protrusion 113 is slidably disposed in the guide groove 121, and the guide groove 121 guides the up-and-down movement of the nut 110, so that the movement of the nut 110 is more reliable and stable.
In this embodiment, a second restoring portion 130 is disposed in the second mounting cavity 122, the second restoring portion 130 may be a spring, and the second restoring portion 130 is located between the second housing 120 and the top end of the nut 110. When the cover 500 is fastened to the housing 600, the second restoring portion 130 is compressed by a force; after the cover is opened, the nut 110 is restorable by the elastic force of the second restoring portion 130.
In some embodiments of the present application, the locking device further includes an unlocking assembly 400, referring to fig. 4, 6 and 8, the unlocking assembly 400 includes a rack 410 and a gear 420, and the gear 420 is sleeved on the screw 210, specifically on the screw section 212. When emergency unlocking is needed under the conditions that power is off, the driving part 220 cannot work normally and the like, the rack 410 is pulled, the rack 410 can be meshed with the gear 420, the gear 420 rotates under the driving action of the rack 410, the gear 420 further drives the screw 210 to rotate reversely and unscrew from the nut 110, and therefore opening of the cover is achieved.
In this embodiment, the unlocking assembly 400 further includes a one-way bearing 430, and the one-way bearing 430 is disposed between the gear 420 and the screw 210. The gear 420 can only rotate in one direction, specifically in the reverse direction, under the action of the one-way bearing 430, so that the unlocking assembly 400 can only act on the screw assembly 200 in one direction to open the door.
The rack 410 has a serrated section 411 and a non-serrated section 412, and the serrated section 411 is separated from the gear 420 when emergency unlocking is not required; when emergency unlocking is needed, the rack 410 is pulled, the sawtooth section 411 moves towards the direction close to the gear 420 to be meshed with the gear 420, the rack 410 is pulled continuously, and the gear 420 can rotate under the meshing action of the sawtooth section 411. Limited by the volume of the cover locking device, after the rack 410 completes the unidirectional pulling stroke, the rotation stroke of the gear 420 is not enough to enable the screw 210 to be unscrewed from the nut 110, at this time, the rack 410 is pushed back to the original position, because the gear 420 is a unidirectional gear, the rack 410 cannot cause the reverse rotation of the screw 210 in the pushing back process, and then the above process is repeated until the screw 210 is unscrewed from the nut 110, and the cover opening is completed.
In some embodiments of the present application, referring to fig. 2 to 5, the unlocking assembly 400 further includes a third housing 440, a third mounting cavity 441 is formed in the third housing 440, the third mounting cavity 441 extends along the axial direction of the screw 210, and the third mounting cavity 441 is coaxial with and communicates with the first mounting cavity 231. The end of the screw 210 away from the nut 110 (i.e. the screw section 212) and the gear 420 are both located in the third mounting cavity 441, and the rack 410 is located in the third housing 440, and the rack 410 can move in a direction perpendicular to the third mounting cavity 441. One end of the third housing 440 is provided with a penetration hole 443, and the toothless section 412 protrudes from the penetration hole 443 to facilitate manual pulling of the rack 410. When the rack 410 is pulled, the serrated section 411 may engage with the gear 420.
In this embodiment, the first housing 230 and the third housing 440 are fixedly connected by screws to assemble the screw assembly 200 and the unlocking assembly 400 into an integral structure. The third housing 440 can be fixedly connected to the housing 600 by screws, so as to further improve the assembling reliability of the screw assembly 200 and the unlocking assembly 400.
In this embodiment, referring to fig. 2, a stepped section 213 is formed between the first screw section 211 and the second screw section 212, and after the first housing 230 is fixedly connected to the third housing 440, the stepped section 213 is limited in an area enclosed between the first mounting cavity ii 2312 and the top end surface of the third housing 440, so as to axially limit the screw 210, which is beneficial to improving the structural reliability of the screw 210.
Referring to fig. 5, the third housing 440 is provided with a sliding slot 442, and the sawtooth section 411 is disposed in the sliding slot 442 and can slide along the sliding slot 442, so that the movement of the rack 410 is more stable and reliable. A cover plate (not shown) is disposed on the third casing 440, and the cover plate shields the sliding groove 442 to prevent the rack 410 from being exposed to affect the reliability of the structure.
In this embodiment, the unlocking assembly 400 further includes a third restoring portion 450, the third restoring portion 450 may be a spring, and the third restoring portion 450 is sleeved on the toothless section 412 and located between the sawtooth section 411 and the inner wall of the third housing 440. When the rack 410 is pulled to the outside of the third housing 440, the third restoring portion 450 is compressed by force; after the rack 410 is released, the rack 410 can be reset by the elastic force of the third reset portion 450.
The present embodiment further provides a centrifuge, which uses the lid locking device disclosed in the above embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A cover closure for a centrifuge, the centrifuge including a cover and a housing, the cover closure comprising:
the nut assembly is arranged on the cover body and comprises a nut;
the screw assembly is arranged on the shell and comprises a screw and a driving part for driving the screw to move;
a control assembly including a trigger portion and a switch portion, the switch portion in communication with the drive portion;
when the cover is closed, the nut moves towards the direction close to the screw rod, the nut drives the trigger part to move towards the direction close to the switch part, when the trigger part triggers the switch part, the switch part transmits an instruction to the driving part, and the driving part drives the screw rod to rotate, screw into the nut and lock with the nut;
when the cover is opened, the driving part drives the screw rod to rotate reversely and unscrew from the nut.
2. The lid locking device for a centrifuge according to claim 1,
the trigger part is provided with a first trigger part and a second trigger part, and the switch part comprises a first switch and a second switch;
when the trigger part moves towards the direction close to the switch part, the first trigger part triggers the first switch firstly, the first switch sends an instruction to the driving part to enable the driving part to be started, then the second trigger part triggers the second switch, and the second switch sends an instruction to the driving part to enable the driving part to be stopped.
3. The lid body locking device for a centrifuge according to claim 2,
the control assembly further comprises a connecting part, the connecting part is sleeved on the periphery of the screw rod, and the connecting part is connected with the triggering part;
the nut is close to the one end of screw rod has the non-screw section, the internal thread of nut is located the upper portion of non-screw section, the nut is towards when being close to the direction motion of screw rod, the non-screw section overlaps earlier and is located the periphery of screw rod, the nut with connecting portion support to lean on the messenger connecting portion are followed the axial direction motion of screw rod, works as the nut continues to be close to the direction motion of screw rod extremely the internal thread of nut with during the external screw thread contact of screw rod, first trigger part triggers first switch.
4. The lid locking device for a centrifuge according to claim 3,
the screw assembly further comprises a first shell, a first installation cavity is formed in the first shell, the screw rotatably penetrates through the first installation cavity, a slot communicated with the first installation cavity is formed in the first shell, and the triggering portion extends out of the slot to the outer side of the first installation cavity and acts with the switch portion;
the first installation cavity is internally provided with a first reset part, and the first reset part is used for providing reset force for the connecting part.
5. The lid locking device for a centrifuge according to claim 1,
the nut component further comprises a second shell, the second shell is connected with the cover body, a second mounting cavity is formed in the second shell, one end of the nut is arranged in the second mounting cavity, the nut can move in the axial direction of the second mounting cavity, a second reset portion is arranged in the second mounting cavity, and the second reset portion is used for providing reset force for the nut.
6. The lid locking device for a centrifuge according to any one of claims 1 to 5, wherein the lid locking device further comprises:
the unlocking assembly comprises a rack and a gear, the gear sleeve is arranged on the screw, during unlocking, the rack is pulled to enable the rack to be meshed with the gear, the rack drives the gear to rotate, and the gear drives the screw to rotate and then to be screwed out of the nut.
7. The lid locking device for a centrifuge according to claim 6,
the unlocking assembly further comprises a one-way bearing, and the one-way bearing is arranged between the gear and the screw rod.
8. The lid locking device for a centrifuge according to claim 6,
the unlocking assembly further comprises a third shell, a third installation cavity is formed in the third shell, the third installation cavity extends along the axial direction of the screw rod, one end, far away from the nut, of the screw rod and the gear are located in the third installation cavity, the rack is arranged on the third shell and can move in the direction perpendicular to the third installation cavity, the rack is provided with a sawtooth section and a toothless section, and the sawtooth section can be meshed with the gear.
9. The lid locking device for a centrifuge according to claim 8,
the unlocking assembly further comprises a third resetting portion for providing a resetting force to the rack.
10. A centrifuge comprising a lid closure for a centrifuge according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010440881.4A CN111659544A (en) | 2020-05-22 | 2020-05-22 | Be applied to lid locking device and centrifuge of centrifuge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010440881.4A CN111659544A (en) | 2020-05-22 | 2020-05-22 | Be applied to lid locking device and centrifuge of centrifuge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111659544A true CN111659544A (en) | 2020-09-15 |
Family
ID=72384360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010440881.4A Pending CN111659544A (en) | 2020-05-22 | 2020-05-22 | Be applied to lid locking device and centrifuge of centrifuge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111659544A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115095229A (en) * | 2022-06-24 | 2022-09-23 | 中科美菱低温科技股份有限公司 | Automatic door lock and centrifugal machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10164272A1 (en) * | 2001-12-27 | 2003-07-10 | Sigma Laborzentrifugen Gmbh | Locking device used for lid of housing of laboratory centrifuge comprises locking part containing threaded spindle as moving element, and receiving part |
| CN103790443A (en) * | 2013-12-25 | 2014-05-14 | 吴斐 | Motor transmission device used in electronic lock |
| CN104190554A (en) * | 2014-08-05 | 2014-12-10 | 安徽奥冠环保设备制造有限公司 | Machine case self-locking mechanism of centrifuge |
| CN104295160A (en) * | 2014-07-30 | 2015-01-21 | 薛恒伟 | Embedded rotary lock without lock hole |
| CN105317283A (en) * | 2015-11-17 | 2016-02-10 | 浙江宏泰电子设备有限公司 | Anti-theft door lock |
| CN205113506U (en) * | 2015-10-21 | 2016-03-30 | 常州市武进华瑞电子有限公司 | Novel electronic heel brace lock |
| CN108049722A (en) * | 2017-10-10 | 2018-05-18 | 苏州琨山通用锁具有限公司 | Push-pull lock indoor emergency unlocking mechanism and its unlocking control method |
-
2020
- 2020-05-22 CN CN202010440881.4A patent/CN111659544A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10164272A1 (en) * | 2001-12-27 | 2003-07-10 | Sigma Laborzentrifugen Gmbh | Locking device used for lid of housing of laboratory centrifuge comprises locking part containing threaded spindle as moving element, and receiving part |
| CN103790443A (en) * | 2013-12-25 | 2014-05-14 | 吴斐 | Motor transmission device used in electronic lock |
| CN104295160A (en) * | 2014-07-30 | 2015-01-21 | 薛恒伟 | Embedded rotary lock without lock hole |
| CN104190554A (en) * | 2014-08-05 | 2014-12-10 | 安徽奥冠环保设备制造有限公司 | Machine case self-locking mechanism of centrifuge |
| CN205113506U (en) * | 2015-10-21 | 2016-03-30 | 常州市武进华瑞电子有限公司 | Novel electronic heel brace lock |
| CN105317283A (en) * | 2015-11-17 | 2016-02-10 | 浙江宏泰电子设备有限公司 | Anti-theft door lock |
| CN108049722A (en) * | 2017-10-10 | 2018-05-18 | 苏州琨山通用锁具有限公司 | Push-pull lock indoor emergency unlocking mechanism and its unlocking control method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115095229A (en) * | 2022-06-24 | 2022-09-23 | 中科美菱低温科技股份有限公司 | Automatic door lock and centrifugal machine |
| CN115095229B (en) * | 2022-06-24 | 2023-11-07 | 中科美菱低温科技股份有限公司 | Automatic door lock and centrifugal machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106923655B (en) | Electric pressure cooker convenient to open cover | |
| WO2017201843A1 (en) | Door opening assisting means and refrigerating device | |
| EP3078792A1 (en) | Lid device | |
| CN111503981B (en) | Automatic door opening and closing device of refrigerator and refrigerator | |
| CN110411128B (en) | Refrigerator with water dispenser assembly | |
| WO2017124579A1 (en) | Screw-driven control system | |
| CN111659544A (en) | Be applied to lid locking device and centrifuge of centrifuge | |
| CN208837347U (en) | A kind of drawer electric device and its cabinet for TV | |
| CN208202938U (en) | A kind of acceleration door-opening mechanism and the refrigerator with the mechanism | |
| CN219827515U (en) | Clutch device for electric sliding door of monitoring room | |
| CN212296040U (en) | Window opener capable of being manually clutched | |
| CN209874693U (en) | Propelling device for lock clutch pin | |
| CN209761161U (en) | automatic door opening device with clutch mechanism | |
| CN213683651U (en) | Door cover overturning assembly and automobile door cover overturning structure | |
| CN114165113A (en) | Door lock device capable of saving door closing force | |
| CN212105490U (en) | Hasp type cabin lock | |
| CN211666498U (en) | Improved manual-automatic integrated electric hinge | |
| CN210429644U (en) | Isolating switch | |
| CN210990088U (en) | Turnover mechanism for cover plate of dish-washing machine | |
| KR101509067B1 (en) | Apparatus for opening and shutting of windows | |
| CN112252866A (en) | Turnover electric handle | |
| CN213742774U (en) | Manual-automatic integrated electric window lock box | |
| CN218826695U (en) | Trigger mechanism | |
| CN217883099U (en) | Motor for electronic lock | |
| CN110453994B (en) | Door and window positioning lock with positioning self-locking function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200921 Address after: Room c2-301-304, science and Technology Park, Qingdao National University, No. 127, huizhiqiao Road, high tech Zone, Qingdao, Shandong Province Applicant after: Qingdao Haite biomedical Co.,Ltd. Applicant after: QINGDAO HAIER BIOMEDICAL Co.,Ltd. Address before: 266555 Haier Industrial Park, Qingdao Economic and Technological Development Zone, Shandong Province Applicant before: QINGDAO HAIER BIOMEDICAL Co.,Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200915 |