CN113439962A - Automatic door opening and closing device and refrigerator - Google Patents
Automatic door opening and closing device and refrigerator Download PDFInfo
- Publication number
- CN113439962A CN113439962A CN202010231687.5A CN202010231687A CN113439962A CN 113439962 A CN113439962 A CN 113439962A CN 202010231687 A CN202010231687 A CN 202010231687A CN 113439962 A CN113439962 A CN 113439962A
- Authority
- CN
- China
- Prior art keywords
- gear
- gear set
- sub
- door opening
- automatic door
- 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.)
- Granted
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
- A47B88/40—Sliding drawers; Slides or guides therefor
- A47B88/453—Actuated drawers
- A47B88/457—Actuated drawers operated by electrically-powered actuation means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
- F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
- F16H19/04—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising a rack
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
- F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
- F16H19/04—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising a rack
- F16H19/043—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising a rack for converting reciprocating movement in a continuous rotary movement or vice versa, e.g. by opposite racks engaging intermittently for a part of the stroke
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/02—Doors; Covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Refrigerator Housings (AREA)
Abstract
The invention provides an automatic door opening and closing device and a refrigerator, which are used for automatically opening a drawer door body of the refrigerator and comprise: a drive assembly; the clutch device comprises a driving lever and a sub gear; a first gear set; a second gear set; and a rack push rod; the clutch device is in an initial state, the sub-gear is not meshed with the first gear set and the second gear set, and the sub-gear is manually pushed against the drawer door body, so that the rack push rod is reset, and the drawer door body is closed; the clutch device is in a first working state, the shifting lever rotates, the sub-gear is meshed with the first gear set, the first gear set pushes the rack push rod to extend out, and the drawer door body is opened; the clutch device is in a second working state, the shifting lever rotates, the sub-gear is meshed with the second gear set, the second gear set pushes the rack push rod to reset, and the drawer door body is closed.
Description
Technical Field
The present invention relates to an automatic door opening and closing apparatus and a refrigerator having the same.
Background
At present, medium and high-grade refrigerators in the market are relatively large, door bodies, load weight of the door bodies and door seal suction of the door bodies or drawer type door bodies are large, and more users feed back refrigerator door bodies and are not easy to open. To this problem, automatic door opening and closing devices have emerged.
Most of the existing automatic door opening and closing devices only have the functions of automatically opening and closing the door, and when a drawer type door body is opened, the door can only be automatically opened and closed but cannot be automatically closed, and the door can only be manually closed; or, although the door opening and closing device has the function of automatically opening and closing the door, when special conditions occur, for example, when a user encounters the conditions of habitual door closing action, incapability of completing an automatic door closing instruction, electric control system failure, power failure and the like, the door cannot be manually opened and closed, and forced manual door opening and closing can cause gear tooth punching, so that the tooth crown part of the gear is rapidly abraded, permanent damage is caused to the motor, and the service life of the motor is shortened.
Accordingly, there is a need for an improved automatic door opening and closing apparatus that overcomes the above-mentioned problems.
Disclosure of Invention
The invention aims to provide an automatic door opening and closing device and a refrigerator, which solve the problem that the conventional automatic door opening and closing device cannot realize manual door closing and automatic door closing at the same time.
In order to achieve one of the above objects, an embodiment of the present invention provides an automatic door opening and closing device for automatically opening a drawer door of a refrigerator, the automatic door opening and closing device including: a drive assembly; the clutch device is meshed with the driving assembly and comprises a driving lever and a sub gear; a first gear set; a second gear set engaging the first gear set; the first gear set and the second gear set are respectively meshed with the rack push rod; the clutch device is in an initial state, the sub-gear is not meshed with the first gear set and the second gear set, and the sub-gear is manually pushed against the drawer door body, so that the rack push rod is reset, and the drawer door body is closed; the clutch device is in a first working state, the shifting lever rotates, the sub-gear is meshed with the first gear set, the first gear set pushes the rack push rod to extend out, and the drawer door body is opened; the clutch device is in a second working state, the shifting lever rotates, the sub-gear is meshed with the second gear set, the second gear set pushes the rack push rod to reset, and the drawer door body is closed.
As an optional technical scheme, a drawer is arranged on the inner side of the drawer door body, a sliding rail is arranged on one side of the drawer, the sliding rail comprises a movable rail, and the rack push rod is combined on the movable rail; the rack push rod extends out of the refrigerator body and resets, so that the movable rail drives the drawer to extend out of the refrigerator body or is accommodated in the refrigerator body.
As an optional technical solution, the shift lever includes a rotating shaft and a sleeve, the rotating shaft and the sleeve are respectively disposed on two opposite sides of the shift lever, and the sub-gear is sleeved on the rotating shaft and can rotate around the rotating shaft.
As an optional technical scheme, the clutch device further comprises a female gear, the female gear comprises a worm wheel and a transmission gear which rotate coaxially, and the worm wheel is meshed with a worm at the output end of the driving assembly; the shifting lever also comprises a rotating shaft hole, and the rotating shaft hole is communicated with the sleeve; the rotating shaft protruding from the bottom plate of the first shell of the automatic door opening and closing device penetrates through the sleeve and extends out of the rotating shaft hole, and the female gear is sleeved on the upper portion of the rotating shaft and can rotate around the rotating shaft.
As an optional technical solution, the clutch device further includes a torsion spring, and the torsion spring is sleeved on the sleeve and includes a first end portion and a second end portion; the shifting lever also comprises a shifting sheet; the first shell is also provided with a stop block in a protruding way; the shifting piece is close to the stop block, and the stop block is located between the first end portion and the second end portion.
As an optional technical solution, the shift lever rotates around the rotation shaft, the paddle pushes against one of the first end portion and the second end portion, and one of the first end portion and the second end portion applies a torsion force to the paddle, and the torsion force causes the shift lever to return.
As an optional technical solution, the first housing protrudes out of the first baffle and the second baffle, when the shift lever rotates, the sub-gear is engaged with the first gear set or the sub-gear is engaged with the second gear set, the first baffle and the second baffle are respectively used for stopping the shift lever, and the shift lever stops rotating around the rotating shaft.
As an optional technical solution, the clutch device further includes an elastic member, the shift lever is provided with a fixing hole, one end of the elastic member is fixed to the fixing hole, and the other end of the elastic member elastically abuts against the bottom plate.
As an optional technical solution, the first gear set includes a first duplicate gear and a second duplicate gear, the first duplicate gear includes a first upper gear and a first lower gear which are coaxial, and the second duplicate gear includes a second upper gear and a second lower gear which are coaxial, wherein the first upper gear can engage with the sub-gear, the first lower gear engages with the second lower gear, and the second upper gear engages with a front section of the rack push rod.
As an optional technical solution, the second gear set includes a third duplicate gear and a fourth duplicate gear, the third duplicate gear includes a third upper gear and a third lower gear that are coaxial, and the fourth duplicate gear includes a fourth upper gear and a fourth lower gear that are coaxial, where the third upper gear may engage with the sub-gear, the third lower gear engages with the fourth lower gear, and the fourth upper gear engages with a rear section of the rack push rod.
The invention also provides a refrigerator which comprises a refrigerator body and a door body and is characterized by also comprising the automatic door opening and closing device, wherein the automatic door opening and closing device is used for automatically pushing the door body open.
Compared with the prior art, the automatic door opening and closing device and the refrigerator have the following beneficial effects:
drawings
Fig. 1 is a schematic view of an automatic door opening and closing apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic view of the automatic door opening and closing apparatus of fig. 1 in an initial state with the second housing omitted.
Fig. 3 is an exploded perspective view of the clutch device of the automatic door opening and closing apparatus of fig. 2.
Fig. 4 is a schematic sectional view of the automatic door opening and closing apparatus of fig. 2.
Fig. 5A to 5B are schematic views of the automatic door opening and closing device of fig. 2 in different views in a first operating state.
Fig. 5C is an enlarged schematic view of a in fig. 5B.
Fig. 6A to 6B are schematic views of the automatic door opening and closing device of fig. 2 in a second operating state from different perspectives.
Fig. 6C is an enlarged schematic view of B in fig. 6B.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
FIG. 1 is a schematic view of an automatic door opening and closing apparatus according to an embodiment of the present invention; fig. 2 is a schematic view of the automatic door opening and closing apparatus of fig. 1 in an initial state with the second housing omitted; FIG. 3 is an exploded perspective view of the clutch assembly of the automatic door opening and closing apparatus of FIG. 2; fig. 4 is a schematic sectional view of the automatic door opening and closing apparatus of fig. 2.
As shown in fig. 1 to 4, the automatic door opening and closing device 100 includes a first housing 1 and a second housing 2 that are fastened to each other, and a driving assembly 3, a clutch device 4, a first gear set 7, a second gear set 8, and a rack push rod 101 are respectively assembled in an accommodating cavity between the first housing 1 and the second housing 2, wherein the clutch device 4 is located between the first gear set 7 and the second gear set 8, and the first gear set 7 and the second gear set 8 are respectively engaged with a rack 1011 of the rack push rod 101; when the clutch device 4 is in an initial state (or a reset state), the sub-gear 42 of the clutch device 4 is not meshed with the first gear set 7 and the second gear set 8, and a user manually pushes against a drawer door body of the refrigerator, so that the rack push rod 101 is reset by the drawer door body; when the clutch device 4 is in the first working state, the shift lever 43 of the clutch device 4 deflects, so that the sub-gear 42 on the shift lever 43 is meshed with the first gear set 7, and the first gear set 7 pushes the rack push rod 101 to extend out of the first shell 1; when the clutch device 4 is in the second working state, the shift lever 43 of the clutch device 4 deflects, so that the sub-gear 42 on the shift lever 43 is meshed with the second gear set 8, and the second gear set 8 pushes the rack push rod 101 to reset.
In a preferred embodiment, the automatic door opening and closing device 100 is applied to a refrigerator having a drawer-type door body, the rack push rod 101 is connected to a moving rail of a sliding rail at a side of a drawer in the refrigerator, when the clutch device 4 in the automatic door opening and closing device 100 is in a first working state, the clutch device 4 engages with the first gear set 7, and the rack push rod 101 extends to drive the moving rail to slide towards the drawer-type door body, so that the drawer-type door body is pushed outwards; when the clutch device 4 in the automatic door opening and closing device 100 is in the second working state, the clutch device 4 engages with the second gear set 8, and the rack push rod 101 resets to drive the movable rail to slide towards the inside of the refrigerator, so that the drawer-type door body is closed on the refrigerator body of the refrigerator; when the clutch device in the automatic door opening and closing device 100 is in the initial state (or reset state), the clutch device 4 is not engaged with the first gear set 7 and the second gear set 8, the user can push the drawer door to move towards the refrigerator body, the movable rail slides towards the inside of the refrigerator, so that the rack push rod 101 moves towards the first shell 1 to reset, and the drawer door is closed on the refrigerator body.
As shown in fig. 2 and 3, the first housing 1 includes a bottom plate 11 and a sidewall 12 protruding upward from the periphery of the bottom plate 11, and a protrusion 121 is provided on the sidewall 12; the second casing 2 comprises a top plate 21 and a side wall 22 protruding downwards from the periphery of the top plate 21, and a buckle 221 is arranged on the side wall 22; the second housing 2 is fastened to the upper portion of the first housing 1, and the fastener 221 is fastened to the protrusion 121. The space surrounded by the top plate 21, the bottom plate 11, and the side walls 12 and 22 defines the above-mentioned accommodating cavity, and the driving assembly 3, the clutch device 4, the first gear set 7, the second gear set 8, and the rack push rod 101 are respectively assembled in the accommodating cavity. Corresponding to the rack push rod 101, two opposite side walls 12 of the first housing 1 are respectively provided with a notch, and two opposite ends of the rack push rod 101 can respectively extend out of or reset from the corresponding notches.
The driving assembly 3 is electrically connected to a control board (not shown), the driving assembly 3 is, for example, a driving motor, an output end of the driving motor has a worm 31, the driving motor is mounted on a motor fixing bracket, and the motor fixing bracket is disposed on the bottom plate of the first housing 1 and located in the accommodating cavity. In this embodiment, the worm 31 is engaged with the worm wheel 411 on the female gear 41 of the clutch device 4, when the driving motor is operated, the female gear 41 of the clutch device 4 is driven to rotate by the rotation of the worm 31, the female gear 41 rotates and drives the shift lever 43 of the clutch device 4 to deflect, when the sub-gear 42 is engaged with the first gear set 7, the rack push rod 101 extends out of the first housing 1, and when the sub-gear 42 is engaged with the second gear set 8, the rack push rod 101 is reset relative to the first housing 1.
The clutch device 4 is positioned among the driving assembly 3, the first gear set 7 and the second gear set 8 and comprises a female gear 41, a sub-gear 42, a shifting lever 43 and a torsion spring 44, wherein the female gear 41 comprises a worm wheel 411 and a transmission gear 412 which rotate coaxially, the worm wheel 411 is meshed with the worm 31 in the driving assembly 3, and the transmission gear 412 is meshed with the sub-gear 42; the shift lever 43 is further provided with a rotating shaft hole 431, a rotating shaft 432 and a sleeve 433, the rotating shaft 432 and the sleeve 433 are respectively arranged on two opposite sides of the shift lever 43, and the extending direction of the rotating shaft 432 is opposite to the extending direction of the sleeve 433; the torsion spring 44 is sleeved outside the sleeve 433, and the sub-gear 42 is sleeved on the rotating shaft 432 and can rotate around the rotating shaft 432.
In this embodiment, the shaft hole 431 and the sleeve 433 are communicated with each other, the rotating shaft 13 and the stopper 16 are protruded from the base plate 11, and after the lever 43 is assembled with the base plate 11, the rotating shaft 13 is received in the shaft hole 431 and the sleeve 433, so that the lever 43 can rotate around the rotating shaft 13. In addition, the torsion spring 44 includes a first end portion 441 and a second end portion 442, the rotating shaft 13 is inserted into the sleeve 433, and the stopper 16 is located between the first end portion 441 and the second end portion 442 (as shown in fig. 3).
As shown in fig. 3 and 4, the shift lever 43 is further provided with a shift tab 434, and the shift tab 434 is disposed adjacent to the sleeve 433. In this embodiment, the pick 434 is located between the sleeve 433 and the stop block 16.
When the worm 31 rotates, the worm wheel 411 and the transmission gear 412 are driven to pivot around the rotating shaft 13, and the friction force exists between the worm wheel 411 and the shift lever 43, so that the shift lever 43 rotates around the rotating shaft 13, and at the same time, one of the first end 441 and the second end 442 of the torsion spring 44 is pushed by the shift piece 434 as a free end, and a torsion force is generated; and when the worm 31 stops rotating, the torsion force makes the shift lever 43 rotated around the rotation shaft 13 continue to rotate reversely around the rotation shaft 13 to be reset.
It should be noted that, when the shift lever 43 is in the first and second operating states, the friction force exerted on the shift lever 43 by the worm wheel 411 is greater than the torsion force generated by the torsion spring 44 pushed by the shifting piece 434, so as to ensure that the sub-gear 42 sleeved on the rotating shaft 432 of the shift lever 43 is always engaged with the gears in the first gear set 7 or the second gear set 8 (as shown in fig. 5A and fig. 6A).
As shown in fig. 3, in order to make the shift lever 43 rotate more smoothly, a fixing hole 435 is formed in the shift lever 43, one end of the elastic member 45 is disposed in the fixing hole, and one end of the elastic member 45 elastically abuts against the bottom plate 11, that is, the elastic member 45 is elastically sandwiched between the shift lever 43 and the bottom plate 11, and when the shift lever 43 rotates around the rotating shaft 13, the elastic member 45 provides an elastic force to make the lever 43 rotate smoothly.
As shown in fig. 1 to 3, a first baffle 14 and a second baffle 15 are further disposed on the bottom plate 11, the first baffle 14 is close to the first gear set 7, the second baffle 15 is close to the second gear set 8, and a rotation range or an angle of the shift lever 43 is limited between the first baffle 14 and the second baffle 15, so as to avoid that a rotation amplitude of the shift lever 43 is too large, which causes a collision between the sub-gear 42 of the clutch device 4 and the first gear set 7 or the second gear set 8, and further ensure that the rotation amplitude of the shift lever 43 just enables the sub-gear 42 to be meshed with the first gear set 7 or the second gear set 8, and realize gear linkage.
It should be noted that, after the shift lever 43 is stopped by the first baffle 14 or the second baffle 15, along with the rotation of the worm wheel 411, the first baffle 14 or the second baffle 15 applies a pushing force to the shift lever 43 to prevent the shift lever 43 from continuing to rotate, so that the sub-gear 42 drives the gears in the first gear set 7 or the second gear set 8 engaged with the sub-gear to rotate, thereby achieving the extension or the return of the rack push rod 101. In order to ensure that the first gear set 7 or the second gear set 8 can be rotated by the driven gear 42, the friction force exerted by the worm wheel 411 on the shift lever 43 needs to be greater than the sum of the torsional force of the torsion spring 44 acting on the shift lever 43 and the pushing force exerted by the first shutter 14 or the second shutter 15.
As shown in fig. 2 and 3, the first gear set 7 includes a first duplicate gear including a first upper gear 71 and a first lower gear 72 (shown in fig. 5B), and a second duplicate gear including a second upper gear 74 and a second lower gear 73, wherein the first lower gear 72 engages the second lower gear 73, and the second upper gear 74 engages a front section of the rack 1011 of the rack push rod 101.
The second gear set 8 includes a third duplicate gear including a third upper gear 81 and a third lower gear 82 (as shown in fig. 6B), and a fourth duplicate gear including a fourth upper gear 84 and a fourth lower gear 83, wherein the third lower gear 82 engages the fourth lower gear 83, and the fourth upper gear 84 engages a rear section of the rack 1011 of the rack push rod 101.
In this embodiment, the front section of the rack 1011 is close to the drawer door, and the rear section of the rack 1011 is close to the rear wall of the refrigerator. The drawer door body is opposite to the rear wall of the refrigerator.
As shown in fig. 1 to 3, a micro switch 9 is disposed on one side of the rack push rod 101, and preferably, the micro switch 9 is located inside the rack 1011 and between the first gear set 7 and the second gear set 8.
The rack push rod 101 is provided with a protrusion, after the rack push rod 101 extends out of the first shell 1, after the door body is opened, the protrusion pushes against the elastic sheet 92 on the micro switch 9, the elastic sheet 92 presses a switch button (not shown), the micro switch 9 sends a signal to the control panel, the worm 31 on the output end of the control panel control driving assembly 3 stops rotating, the worm wheel 411 stops rotating, the friction force exerted on the shift lever 43 by the worm wheel 411 disappears, the reverse rotation of the shift lever 43 is reset by the torsional force exerted on the shifting piece 434 by the torsion spring 44, and the sub-gear 42 is disengaged from the first gear set 7 or the second gear set 8.
According to the automatic door opening and closing device 100, if the drawer door body needs to be automatically opened, the worm 31 is driven to rotate towards the first direction, the deflector rod 43 of the clutch device 4 deflects towards the first gear set 7 and is meshed with the first gear set 7, and the first gear set 7 pushes the rack push rod 101 to extend out so as to open the drawer door body; if the drawer door body needs to be automatically closed, the worm 31 is driven to rotate towards a second direction, the second direction is opposite to the first direction, the deflector rod 43 of the clutch device 4 deflects towards the second gear set 8 and is meshed with the second gear set 8, the second gear set 8 drives the rack push rod 101 to reset, and the drawer door body is closed on the box body; in addition, if the user needs to manually close the drawer door, the clutch device 4 is in the initial state or the reset state, and the drawer door directly pushes the front end of the rack push rod 101 to move toward the inside of the first housing 1, so as to be reset. Since the clutch device 4 only engages with the driving assembly and does not engage with the rack push rod 101 through the gear set, the rack push rod 101 does not damage the driving assembly in the manual resetting process.
Therefore, the automatic door opening and closing device provided by the invention has the functions of automatically opening and closing the drawer door body and simultaneously has the function of manually closing the door. Therefore, the defect that the existing automatic door opening and closing device cannot simultaneously realize automatic door closing and manual door closing under the condition of power failure or incapability of working of the driving assembly is overcome.
The following will describe in detail the different operating states of the automatic door opening and closing device according to the first embodiment of the present invention with reference to several figures.
Fig. 5A to 5B are schematic views of the automatic door opening and closing device of fig. 2 in a first operating state from different perspectives; fig. 5C is an enlarged schematic view of a in fig. 5B.
As shown in fig. 5A to 5C, when the automatic door opening and closing device 100 is in the first operating state (automatic door opening and closing state), the worm 31 rotates in the first direction, the shift lever 43 rotates forward, the sub-gear 42 engages with the first gear set 7, and drives the first gear set 7 to rotate, so as to drive the rack push rod 101 to extend out from the first housing 1, and drive the moving rail to slide forward and push away the drawer door. The forward rotation means that the shift lever 43 rotates toward one side of the drawer door.
Specifically, the worm 31 rotates in the first direction, so that the worm wheel 411 rotates counterclockwise about the rotation shaft 13, the worm wheel 411 applies a frictional force to the shift lever 43, and one end of the shift lever 43 rotates counterclockwise about the rotation shaft 13, so that the other end of the shift lever rotates forward. Since the worm wheel 411 is stacked with the transmission gear 412 coaxially rotating, and the transmission gear 412 is meshed with the sub-gear 42 sleeved on the rotating shaft 432 of the shift lever 43, the transmission gear 412 rotates counterclockwise, and the sub-gear 42 rotates counterclockwise around the rotating shaft 432.
With the continuous rotation of the worm 31, the counterclockwise rotation of the worm wheel 411 continuously drives the shift lever 43 to continuously rotate forward around the rotation shaft 13, and when the sub-gear 42 on the shift lever 43 is meshed with the first upper gear 71 of the first duplicate gear in the first gear set 7, the shift lever 43 is stopped by the first stopper 14. During the forward rotation of the shift lever 43, the first end 441 of the torsion spring 44 is pushed by the toggle piece 434, where the first end 441 is similar to the free end of the torsion spring and deforms to apply a reverse torque to the toggle piece 434, and the first end 441 deforms to apply a torque to the toggle piece 434; the second end 442 is coupled to the stop 16, where the second end 442 is similar to the fixed end of the torsion spring.
In this embodiment, the first end 441 and the second end 442 are L-shaped bent portions, respectively, and the two L-shaped bent portions are disposed opposite to each other and combined to two opposite sides of the stopper 16.
The worm 31 is driven to rotate continuously, the forward rotation trend of the shift lever 43 is stopped by the first baffle 14, the sub-gear 42 on the shift lever 43 is driven to rotate anticlockwise by the transmission gear 412, the sub-gear 42 is meshed with the first upper gear 71 of the first duplicate gear, the sub-gear 42 drives the first upper gear 71 and the first lower gear 72 of the first duplicate gear to rotate anticlockwise coaxially, the first lower gear 72 is meshed with the second lower gear 73 of the second duplicate gear, and the first duplicate gear drives the second lower gear 73 and the second upper gear 74 of the second duplicate gear to rotate anticlockwise coaxially, so that the rack push rod 101 meshed with the second upper gear 74 extends out of the first housing 1.
In this embodiment, when the clutch device 4 is in the initial state, the second upper gear 74 engages with the front section of the rack 1011 of the rack pusher 101. As the second upper gear 74 rotates, the rack push rod 101 gradually extends, and the second upper gear 74 gradually engages toward the rear section of the rack 1011.
When the drawer door of the refrigerator is pushed open, the protrusion on the inner side of the rack push rod 101 pushes against the elastic sheet 92 on the micro switch 9, the elastic sheet 92 triggers the switch button, so that the micro switch 9 outputs a signal towards the control board, the control board controls the driving assembly 3 to stop working, the worm 31 stops rotating, the worm wheel 411 stops rotating, the friction force applied to the shift lever 43 is removed, the first end 441 of the torsion spring 44 applies a twisting force to the shift tab 434, and the shift lever 43 rotates clockwise around the rotating shaft 13 and resets. After the shift lever 43 is reset, it is in a reset state (or an initial state), and the sub-gear 42 sleeved on the rotating shaft 432 of the shift lever 43 is disengaged from the first upper gear 71 of the first duplicate gear.
Along with the reset of the shift lever 43, the clutch device is restored to the initial state, if the user needs to manually close the door at the moment, the user manually pushes the drawer door body, the drawer door body pushes the rack push rod 101 to be linked with the first gear set 7 and the second gear set 8, the push rod 101 resets, and the drawer door body is closed.
Because the rack push rod 101 is connected with the movable rail of the slide rail, the rack push rod 101 extends out to drive the movable rail to slide towards the drawer door body, so that the drawer can also extend out of the refrigerator to be automatically opened after the drawer door body is pushed open.
Fig. 6A to 6B are schematic views of the automatic door opening and closing device of fig. 2 from different perspectives in a second operating state; fig. 6C is an enlarged schematic view of B in fig. 6B.
As shown in fig. 6A to 6C, when the automatic door opening and closing device 100 is in the second operating state (automatic door closing state), the worm 31 rotates in the second direction, which is opposite to the first direction, the shift lever 43 rotates backward, the sub-gear 42 engages with the second gear set 8, the second gear set 8 is driven to rotate, the rack push rod 101 moves toward the inside of the first housing 1, and the rack push rod 101 is reset. Here, the backward rotation means that the shift lever 43 rotates toward a side away from the drawer door body.
Specifically, the worm 31 rotates so that the worm wheel 411 rotates clockwise about the rotation shaft 13, the worm wheel 411 applies a frictional force to the shift lever 43, and one end of the shift lever 43 rotates clockwise about the rotation shaft 13 so that the other end of the shift lever rotates backward. Since the worm wheel 411 is stacked with the transmission gear 412 coaxially rotating, and the transmission gear 412 is meshed with the sub-gear 42 sleeved on the rotating shaft 432 of the shift lever 43, the transmission gear 412 rotates clockwise, and the sub-gear 42 rotates clockwise around the rotating shaft 432.
With the continuous rotation of the worm 31, the clockwise rotation of the worm wheel 411 continuously drives the shift lever 43 to continuously rotate backwards around the rotation shaft 13, and when the sub-gear 42 on the shift lever 43 is meshed with the third upper gear 81 of the third duplicate gear in the second gear set 8, the shift lever 43 is stopped by the second stop plate 15. During the backward rotation of the shift lever 43, the shift lever 434 pushes against the second end 442 of the torsion spring 44, where the second end 442 is similar to the free end of the torsion spring, which deforms and exerts a reverse torsional force on the shift lever 434; the first end 441 is coupled to the stop 16, where the first end 442 is similar to the fixed end of a torsion spring.
The worm 31 is continuously driven to rotate, the backward rotation trend of the shift lever 43 is stopped by the second baffle 15, the sub gear 42 on the shift lever 43 is driven to rotate clockwise by the transmission gear 412, the sub gear 42 is meshed with the third upper gear 81 of the third dual gear, the sub gear 42 drives the third upper gear 81 and the third lower gear 82 in the third dual gear to rotate clockwise and coaxially, the third lower gear 82 is meshed with the fourth lower gear 83 of the fourth dual gear, the third dual gear drives the fourth lower gear 83 and the fourth upper gear 84 in the fourth dual gear to rotate clockwise and coaxially, so that the rack push rod 101 meshed with the fourth upper gear 84 moves towards the inside of the first shell 1, and the rack push rod 101 is reset.
In this embodiment, when the clutch device 4 is in the initial state, the fourth upper gear 84 engages with the rear section of the rack 1011 of the rack push rod 101. As the fourth upper gear 84 rotates, the rack push rod 101 is reset, and the fourth upper gear 84 is gradually engaged toward the front section of the rack 101.
When the drawer door of the refrigerator is closed in the refrigerator body, the protrusion on the inner side of the rack push rod 101 pushes against the elastic sheet 92 on the micro switch 9, the elastic sheet 92 triggers the switch button, so that the micro switch 9 outputs a signal towards the control board, the control board controls the driving assembly 3 to stop working, the worm 31 stops rotating, the worm wheel 411 stops rotating, the friction force applied on the shift lever 43 is removed, the second end 442 of the torsion spring 44 applies a twisting force on the shift lever 434, and the shift lever 43 rotates counterclockwise around the rotating shaft 13 and resets. After the shift lever 43 is reset, it is in a reset state, and the sub-gear 42 sleeved on the rotating shaft 432 of the shift lever 43 is disengaged from the third upper gear 81 of the third duplicate gear.
Because rack push rod 101 is connected with the movable rail of above-mentioned slide rail, rack push rod 101 resets and drives the movable rail and slide towards the inside of refrigerator for on the drawer door body closed to the box, the drawer also can be accomodate in the box.
The present invention also provides a refrigerator having the automatic door opening and closing apparatus 100.
In summary, the automatic door opening and closing device 100 of the present invention has the following beneficial effects: the clutch device realizes the functions of automatically opening and closing the door and automatically closing the door by selectively meshing a group of gear sets, and simultaneously, under the initial state or the reset state, the clutch device is not meshed with the duplicate gear in the transmission gear set, so that the door body of the refrigerator can be manually closed by the automatic door opening and closing device under the power failure or other use scenes, and the damage of a driving assembly is not caused. Therefore, the automatic door opening and closing device overcomes the defect that the existing automatic door opening and closing device or automatic door opening and closing device can not be manually closed.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (11)
1. An automatic door opening and closing device for automatically opening a drawer door of a refrigerator, the automatic door opening and closing device comprising:
a drive assembly;
the clutch device is meshed with the driving assembly and comprises a driving lever and a sub gear;
a first gear set;
a second gear set engaging the first gear set; and
the first gear set and the second gear set are respectively meshed with the rack push rod;
the clutch device is in an initial state, the sub-gear is not meshed with the first gear set and the second gear set, and the sub-gear is manually pushed against the drawer door body, so that the rack push rod is reset, and the drawer door body is closed; the clutch device is in a first working state, the shifting lever rotates, the sub-gear is meshed with the first gear set, the first gear set pushes the rack push rod to extend out, and the drawer door body is opened; the clutch device is in a second working state, the shifting lever rotates, the sub-gear is meshed with the second gear set, the second gear set pushes the rack push rod to reset, and the drawer door body is closed.
2. The automatic door opening and closing apparatus according to claim 1, wherein a drawer is provided at an inner side of the drawer door body, a slide rail is provided at one side of the drawer, the slide rail includes a movable rail, and the rack push rod is coupled to the movable rail; the rack push rod extends out of the refrigerator body and resets, so that the movable rail drives the drawer to extend out of the refrigerator body or is accommodated in the refrigerator body.
3. The automatic door opening and closing apparatus according to claim 1, wherein said lever comprises a shaft and a sleeve, said shaft and said sleeve being disposed on opposite sides of said lever, respectively, and said sub-gear being rotatably disposed around said shaft and being sleeved on said shaft.
4. The automatic door opening and closing apparatus of claim 3, wherein the clutch further comprises a female gear including a worm gear and a drive gear rotating coaxially, the worm gear engaging a worm of the output of the drive assembly; the shifting lever also comprises a rotating shaft hole, and the rotating shaft hole is communicated with the sleeve; the rotating shaft protruding from the bottom plate of the first shell of the automatic door opening and closing device penetrates through the sleeve and extends out of the rotating shaft hole, and the female gear is sleeved on the upper portion of the rotating shaft and can rotate around the rotating shaft.
5. The automatic door opening and closing device of claim 4 wherein said clutch further comprises a torsion spring, said torsion spring being disposed over said sleeve and including a first end and a second end; the shifting lever also comprises a shifting sheet; the first shell is also provided with a stop block in a protruding way; the shifting piece is close to the stop block, and the stop block is located between the first end portion and the second end portion.
6. The automatic door opening and closing device according to claim 5, wherein said toggle lever rotates about said rotation axis, said paddle pushes against one of said first end and said second end, said one of said first end and said second end applies a torsional force to said paddle, said torsional force causing said toggle lever to return.
7. The automatic door opening and closing device according to claim 5, wherein said first housing protrudes with a first stop and a second stop, and when said lever rotates to engage said sub-gear with said first gear set or said sub-gear with said second gear set, said first stop and said second stop are respectively used to stop said lever, and said lever stops rotating around said rotation axis.
8. The automatic door opening and closing apparatus according to claim 5, wherein said clutch means further comprises an elastic member, said lever is provided with a fixing hole, one end of said elastic member is fixed to said fixing hole, and the other end of said elastic member elastically abuts against said base plate.
9. The automatic door opening and closing device of claim 1 wherein said first gear set comprises a first duplicate gear and a second duplicate gear, said first duplicate gear comprising a first upper gear and a first lower gear that are coaxial, said second duplicate gear comprising a second upper gear and a second lower gear that are coaxial, wherein said first upper gear is engageable with said sub-gear, said first lower gear is engageable with said second lower gear, and said second upper gear is engageable with a forward section of said rack pusher.
10. The automatic door opening and closing device according to claim 9, wherein said second gear set comprises a third duplicate gear and a fourth duplicate gear, said third duplicate gear comprises a third upper gear and a third lower gear which are coaxial, said fourth duplicate gear comprises a fourth upper gear and a fourth lower gear which are coaxial, wherein said third upper gear is engageable with said sub-gear, said third lower gear is engaged with said fourth lower gear, and said fourth upper gear is engaged with a rear section of a rack of said rack pusher.
11. A refrigerator comprising a refrigerator body and a door body, characterized by further comprising an automatic door opening and closing apparatus according to any one of claims 1 to 10 for automatically pushing open the door body.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010231687.5A CN113439962B (en) | 2020-03-27 | 2020-03-27 | Automatic door opening and closing device and refrigerator |
| PCT/CN2021/074056 WO2021190126A1 (en) | 2020-03-27 | 2021-01-28 | Automatic door opening and closing device and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010231687.5A CN113439962B (en) | 2020-03-27 | 2020-03-27 | Automatic door opening and closing device and refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113439962A true CN113439962A (en) | 2021-09-28 |
| CN113439962B CN113439962B (en) | 2022-11-29 |
Family
ID=77808031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010231687.5A Active CN113439962B (en) | 2020-03-27 | 2020-03-27 | Automatic door opening and closing device and refrigerator |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113439962B (en) |
| WO (1) | WO2021190126A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114275946B (en) * | 2022-01-04 | 2022-10-21 | 上海晨鸾环保科技有限公司 | Electrolytic oxidation adsorption reduction's waste water treatment system |
| CN116624056A (en) * | 2022-02-14 | 2023-08-22 | 合肥美的电冰箱有限公司 | Electrical equipment, door opening and closing device and control method of clutch of door opening and closing device |
| CN114569037B (en) * | 2022-03-21 | 2023-07-14 | 江苏凯德电控科技有限公司 | Door opener and dish washer provided with same |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110083461A1 (en) * | 2009-10-13 | 2011-04-14 | Lg Electronics Inc. | Refrigerator |
| CN102383690A (en) * | 2010-08-26 | 2012-03-21 | 现代自动车株式会社 | Door actuator for HVAC system of vehicle |
| CN102390059A (en) * | 2011-09-23 | 2012-03-28 | 李世龙 | Plate cutting machine |
| CN103511572A (en) * | 2013-05-23 | 2014-01-15 | 唐坤亮 | Transmission |
| CN104121748A (en) * | 2013-04-23 | 2014-10-29 | 日立空调·家用电器株式会社 | Door opener and refrigerator having same |
| CN106761136A (en) * | 2016-12-27 | 2017-05-31 | 青岛海尔股份有限公司 | Automatic door operator and the refrigerator with the device |
| CN207778938U (en) * | 2017-11-15 | 2018-08-28 | 江苏雷利电机股份有限公司 | Automatic switch drawer mechanism with thumb wheel clutch |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110024883A (en) * | 2009-09-03 | 2011-03-09 | 삼성전자주식회사 | Apparatus for automatically opening/closing door and refrigerator having the same |
| CN106642947B (en) * | 2016-12-27 | 2018-05-11 | 青岛海尔股份有限公司 | Automatic door operator and the refrigerator with the device |
| CN206724564U (en) * | 2017-05-25 | 2017-12-08 | 合肥美菱股份有限公司 | A kind of automatic switch door gear for refrigerator freezing door body |
| CN208658296U (en) * | 2017-11-15 | 2019-03-29 | 江苏雷利电机股份有限公司 | It is automatically switched drawer mechanism and refrigerator |
| CN208550527U (en) * | 2017-11-15 | 2019-03-01 | 江苏雷利电机股份有限公司 | A kind of automatic switch drawer mechanism and refrigerator |
| KR102595327B1 (en) * | 2018-08-30 | 2023-10-30 | 엘지전자 주식회사 | A refrigerator |
| CN209436663U (en) * | 2018-12-05 | 2019-09-27 | 仝达科技（惠州）有限公司 | A kind of electric drawer |
-
2020
- 2020-03-27 CN CN202010231687.5A patent/CN113439962B/en active Active
-
2021
- 2021-01-28 WO PCT/CN2021/074056 patent/WO2021190126A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110083461A1 (en) * | 2009-10-13 | 2011-04-14 | Lg Electronics Inc. | Refrigerator |
| CN102383690A (en) * | 2010-08-26 | 2012-03-21 | 现代自动车株式会社 | Door actuator for HVAC system of vehicle |
| CN102390059A (en) * | 2011-09-23 | 2012-03-28 | 李世龙 | Plate cutting machine |
| CN104121748A (en) * | 2013-04-23 | 2014-10-29 | 日立空调·家用电器株式会社 | Door opener and refrigerator having same |
| CN103511572A (en) * | 2013-05-23 | 2014-01-15 | 唐坤亮 | Transmission |
| CN106761136A (en) * | 2016-12-27 | 2017-05-31 | 青岛海尔股份有限公司 | Automatic door operator and the refrigerator with the device |
| CN207778938U (en) * | 2017-11-15 | 2018-08-28 | 江苏雷利电机股份有限公司 | Automatic switch drawer mechanism with thumb wheel clutch |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021190126A1 (en) | 2021-09-30 |
| CN113439962B (en) | 2022-11-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113439962B (en) | Automatic door opening and closing device and refrigerator | |
| CN213480300U (en) | Door body subassembly and cooking utensil | |
| JP2018119759A (en) | Drawer opening/closing mechanism for refrigerator | |
| CN111609602A (en) | Refrigerator with a door | |
| CN112797718B (en) | Door opening ejection device, door opening assembly and refrigerator | |
| CN110644868A (en) | Self-suction self-opening door lock | |
| CN211950080U (en) | Ejecting device and refrigerator | |
| CN113445846B (en) | Automatic door opening device and refrigerator | |
| CN109708396B (en) | Clutch automatic door opening device and refrigerator | |
| EP0349329B1 (en) | Cassette loading apparatus in recording and reproducing apparatus | |
| CN112647794B (en) | Door opening mechanism, door assembly and storage cabinet | |
| KR100340837B1 (en) | Tray eject apparatus for disk driver | |
| CN110384350A (en) | One kind opening drawer mechanism | |
| CN109441239B (en) | Full-automatic lock body clutch structure and lock body | |
| CN109708395B (en) | Clutch automatic door opening device and refrigerator | |
| CN114551182A (en) | Clutch device, operating mechanism and circuit breaker | |
| CN211081444U (en) | Automobile glove box door/cover actuator | |
| CN217518466U (en) | Top door mechanism and electrical equipment | |
| CN214260645U (en) | Spinning top toy | |
| CN217937624U (en) | Drawer pushing mechanism for drawer cabinet | |
| WO2023151220A1 (en) | Door opening and closing apparatus, and electrical appliance | |
| CN212278061U (en) | Be applied to motor of cupboard | |
| CN212585308U (en) | Linear rotation synchronous integrated actuator | |
| JP2599639Y2 (en) | Electronic equipment drive | |
| CN109707265B (en) | Clutch automatic door opening device and refrigerator |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |