Refrigerator and door opening and closing control method

Abstract

The embodiment of the invention relates to the technical field of household appliances, and provides a refrigerator and a door opening and closing control method.The refrigerator comprises a refrigerator body, a door body and a door opening and closing device, and the door opening and closing device comprises a power mechanism, a first transmission mechanism, a second transmission mechanism, a door pushing mechanism, a door rotating mechanism, a clutch, a potentiometer, a reset switch and a control unit; the control unit is electrically connected with the power mechanism, the clutch, the potentiometer and the reset switch. The power mechanism is in transmission connection with the door pushing mechanism and the door rotating mechanism. The clutch is used for connecting or separating the second transmission mechanism and the revolving door mechanism, the potentiometer is in transmission connection with the revolving door mechanism, and the potentiometer is used for detecting the rotating angle of the door body and outputting a voltage signal; the reset switch is arranged on the door pushing mechanism and used for detecting whether the door pushing mechanism is reset or not and outputting a reset signal. Reset of the mechanism after automatic door opening and closing can be achieved, follow-up automatic door opening and closing can be normally conducted, and normal manual door opening and closing operation cannot be disturbed.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of household appliance technology, and more specifically, to a refrigerator and a door opening and closing control method. Background Art

[0002] A refrigerator is a refrigeration device that keeps a constant low temperature, and is also a civilian product that keeps food or other items at a constant low temperature. In the prior art, there are refrigerators with automatic door opening and closing to improve the convenience of user operation and safety of use.

[0003] Due to the suction of the door seal, the resistance of the suction aid, the pressure difference between the inside and outside, etc., the force required for the door to open is relatively large. At present, refrigerators with automatic door opening and closing usually use a push rod actuator to push the door open to a certain angle, and then rely on a rotary actuator to drive the rotating shaft to rotate, driving the entire door to rotate and open. Due to the limited installation space, the driving force of the power source of the automatic door opening and closing is limited. Therefore, a driving mechanism is usually used to perform the operations of pushing and rotating to open at the same time.

[0004] However, in order to improve the efficiency of opening and closing the door, when the driving mechanism controls the rotary actuator to fully open or close the door, the push rod actuator is not reset. If the driving mechanism stops driving or performs other operations at this time, the subsequent automatic door opening and closing will not be able to be used normally or will interfere with the normal manual door opening. Summary of the invention

[0005] The embodiment of the present application provides a refrigerator and a door opening and closing control method, which can reset the mechanism after automatic door opening and closing, and effectively avoid interfering with the normal use of subsequent door opening and closing.

[0006] In a first aspect, an embodiment of the present application provides a refrigerator, the refrigerator comprising:

[0007] A box body having a storage room formed therein;

[0008] The door body is rotatably mounted on the box body and is used to open or close the storage room;

[0009] The door opening and closing device is arranged on the box body and connected to the door body, and the door opening and closing device is configured to open or close the door body;

[0010] The door opening and closing device comprises a power mechanism, a first transmission mechanism, a second transmission mechanism, a door pushing mechanism, a door rotating mechanism, a clutch, a potentiometer, a reset switch and a control unit, and the control unit is electrically connected to the power mechanism, the clutch, the potentiometer and the reset switch;

[0011] The power mechanism is connected to the door push mechanism through the first transmission mechanism, and is connected to the door swing mechanism through the second transmission mechanism. The power mechanism is configured to output a driving force and a reverse driving force.

[0012] The clutch is disposed in the second transmission mechanism, and the clutch is configured to connect or disconnect the second transmission mechanism with the swing door mechanism;

[0013] The potentiometer is connected to the revolving door mechanism in a transmission manner. The potentiometer is configured to detect the angle of rotation of the door body and output a voltage signal, wherein the voltage signal includes a top-opening signal, an opening signal and a closing signal;

[0014] The reset switch is arranged on the door push mechanism, and the reset switch is configured to detect whether the door push mechanism is reset and output a reset signal;

[0015] The control unit is configured as:

[0016] When the door opening and closing device executes the door opening command, the power mechanism outputs a driving force and drives the door pushing mechanism through the first transmission mechanism to push the door body open; when the door opening and closing device executes the door closing command, the power mechanism outputs a reverse driving force and drives the door swinging mechanism through the second transmission mechanism to close the door body;

[0017] When the potentiometer outputs a top-opening signal, the clutch connects the second transmission mechanism and the swing door mechanism, the power mechanism outputs a driving force, and drives the swing door mechanism through the second transmission mechanism to open the door body;

[0018] When the potentiometer outputs an opening signal, the clutch separates the second transmission mechanism from the swing door mechanism, the power mechanism outputs a driving force, and drives the push door mechanism to reset through the first transmission mechanism;

[0019] When the potentiometer outputs a closing signal, the clutch separates the second transmission mechanism from the swing door mechanism, the power mechanism outputs a driving force, and drives the push door mechanism to reset through the first transmission mechanism;

[0020] When the reset switch outputs a reset signal, the power mechanism stops.

[0021] In this way, by connecting a potentiometer to the swing door mechanism and setting a reset switch on the push door mechanism, when the door is opened and closed, the signal output by the potentiometer will also change as the door body rotation angle changes. The control unit can judge the current operation state according to the signal output by the potentiometer, and control the power mechanism and the clutch to work accordingly. When the door is opened, if the potentiometer outputs an open signal, it indicates that the door has been opened normally and the push door mechanism needs to be reset. When the door is closed, if the potentiometer outputs a close signal, it indicates that the door has been closed normally and the push door mechanism needs to be reset. At this time, the control unit controls the power mechanism to output the driving force and switches the clutch to separation, thereby driving the push door mechanism to reset. When the reset switch detects that the push door mechanism is reset, it outputs a reset signal, indicating that the door opening and closing device has been completely reset and the next operation can be performed. At this time, the control unit controls the power mechanism to stop. In this way, the reset of the mechanism after the automatic door opening and closing can be realized, so that the subsequent automatic door opening and closing can be carried out normally, and the normal manual door opening and closing operation will not be interfered.

[0022] In some embodiments of the present application, the door push mechanism includes an incomplete gear, a push rod and a reset member;

[0023] The incomplete gear is rotatably arranged on the box body, and the incomplete gear is transmission-connected with the first transmission mechanism;

[0024] The push rod is arranged on the box body so as to be movable toward the door body, and the push rod is intermittently meshed with the incomplete gear;

[0025] The reset member is arranged on the box body, and the reset member is configured to reset the push rod, and the reset switch is arranged on the incomplete gear.

[0026] In this way, through the intermittent engagement of the incomplete gear and the push rod, the push rod can push the door body open, disengage the push rod from the transmission, and reset the push rod through the reset member, thereby preventing the push rod from colliding with the door body when the door body is closed, causing damage or jamming. By setting a reset switch on the incomplete gear, the reset state of the door pushing mechanism can be detected, thereby improving the convenience of detection.

[0027] In some embodiments of the present application, the push rod is provided with a mating tooth, which is arranged along the moving direction of the push rod and is located on a side of the push rod close to the incomplete gear, and the mating tooth is meshed with the incomplete gear.

[0028] In this way, through the meshing of the matching teeth with the incomplete gear, the push rod can be driven by the incomplete gear to move and realize the door pushing action.

[0029] In some embodiments of the present application, the revolving door mechanism includes a rocker arm, which is rotatably disposed on the box body and connected to the door body, the rocker arm is transmission-connected to the second transmission mechanism, and the potentiometer is transmission-connected to the rocker arm.

[0030] In this way, by rotating the set rocker arm and connecting the rocker arm to the door body, the rocker arm can be driven to rotate through the second transmission mechanism, thereby driving the door body to rotate and open the door body. By connecting a potentiometer to the rocker arm for transmission, the rotation angle of the door body can be detected by detecting the rocker arm, thereby improving the convenience of detection.

[0031] In some embodiments of the present application, the power mechanism includes a drive motor and a diverter gear. The drive motor is arranged on the housing. The diverter gear is transmission-connected to the drive motor. The first transmission mechanism and the second transmission mechanism are transmission-connected to the diverter gear respectively.

[0032] In this way, the output of positive and negative driving forces is realized by the driving motor, so that the accuracy of the output of the power mechanism can be improved, and the diversion of the output driving force is realized by the diversion gear, so that the first transmission mechanism and the second transmission mechanism can be driven to rotate respectively.

[0033] In some embodiments of the present application, the power mechanism further includes a worm and an input gear, the worm is disposed on a driving shaft of the driving motor, the worm is meshed with the input gear, and the diverter gear is meshed with the input gear.

[0034] In this way, through the meshing of the worm and the output gear, the direction of the driving force output by the driving motor can be changed, which is convenient for setting the driving motor in the refrigerator and makes the overall structure of the door opening and closing device more compact.

[0035] In some embodiments of the present application, the first transmission mechanism includes a first transmission gear, the first transmission gear is meshed with the diverter gear, and the door pushing mechanism is transmission-connected to the first transmission gear.

[0036] In this way, through the meshing of the first transmission gear and the diverter gear, the driving force of the driving motor can be transmitted to the first transmission gear, and then the door pushing mechanism connected to the first transmission gear can be driven.

[0037] In some embodiments of the present application, the second transmission mechanism includes a second transmission gear, a driving gear, a driven gear and an output gear, the second transmission gear is meshed with the diverter gear, the driving gear is transmission-connected with the second transmission gear, and the driven gear is transmission-connected with the output gear;

[0038] The clutch is configured to connect or disconnect the driven gear with the driving gear, and the swing door mechanism is drivingly connected with the output gear.

[0039] In this way, through the meshing of the second transmission gear and the diverter gear, the driving force of the drive motor can be transmitted to the second transmission gear, and then the driving gear connected to the second transmission gear is driven to rotate, and through the clutch, the driven gear and the driving gear are detachably connected, thereby realizing the clutch of the second transmission mechanism.

[0040] In some embodiments of the present application, the second transmission mechanism further includes a reduction gear, which is disposed between the driven gear and the output gear, and the reduction gear is meshedly connected to the driven gear and the output gear respectively.

[0041] In this way, by setting the reduction gear, the torque output to the output gear can be increased, thereby facilitating the swing door mechanism to rotate the door body to open.

[0042] In a second aspect, an embodiment of the present application provides a door opening and closing control method for the above-mentioned refrigerator.

[0043] When the door opening device receives the door opening command, it performs the following steps:

[0044] The push-opening step controls the power mechanism to output driving force and controls the clutch to switch to disengagement, so as to push the door body open through the door-pushing mechanism;

[0045] In the opening step, when the potentiometer outputs a top-opening signal, the power mechanism is controlled to output a driving force, and the clutch is controlled to switch to connection, so as to open the door body through the swing door mechanism;

[0046] Door opening reset step: when the potentiometer outputs an opening signal, the power mechanism is controlled to output a driving force, and the clutch is controlled to switch to separation to drive the door push mechanism to reset. When the reset switch outputs a reset signal, the power mechanism is controlled to stop;

[0047] When the door opening and closing device receives the door closing command, it performs the following steps:

[0048] The door closing step controls the power mechanism to output a reverse driving force and controls the clutch to switch to connection, so as to close the door body through the swing door mechanism;

[0049] Door closing reset step: when the potentiometer outputs a closing signal, the power mechanism is controlled to output a driving force, and the clutch is controlled to switch to separation to drive the door push mechanism to reset. When the reset switch outputs a reset signal, the power mechanism is controlled to stop.

[0050] In this way, by connecting a potentiometer to the swing door mechanism and setting a reset switch on the push door mechanism, when the door is opened and closed, the signal output by the potentiometer will also change as the door body rotation angle changes. The control unit can judge the current operation state according to the signal output by the potentiometer, and control the power mechanism and the clutch to work accordingly. When the door is opened, if the potentiometer outputs an open signal, it indicates that the door has been opened normally and the push door mechanism needs to be reset. When the door is closed, if the potentiometer outputs a close signal, it indicates that the door has been closed normally and the push door mechanism needs to be reset. At this time, the control unit controls the power mechanism to output the driving force and switches the clutch to separation, thereby driving the push door mechanism to reset. When the reset switch detects that the push door mechanism is reset, it outputs a reset signal, indicating that the door opening and closing device has been completely reset and the next operation can be performed. At this time, the control unit controls the power mechanism to stop. In this way, the reset of the mechanism after the automatic door opening and closing can be realized, so that the subsequent automatic door opening and closing can be carried out normally, and the normal manual door opening and closing operation will not be interfered. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0052] Figure 1 A schematic diagram of the structure of a refrigerator provided in an embodiment of the present application;

[0053] Figure 2 for Figure 1 One of the structural schematic diagrams of the door opening and closing device of the refrigerator shown;

[0054] Figure 3 for Figure 1 The second structural schematic diagram of the door opening and closing device of the refrigerator shown;

[0055] Figure 4 for Figure 2 One of the structural schematic diagrams of the door opening and closing device when executing the door opening command;

[0056] Figure 5 A schematic diagram of the structure of a refrigerator provided in an embodiment of the present application when executing a door opening command;

[0057] Figure 6 for Figure 2 The second structural schematic diagram of the door opening and closing device when executing the door opening command;

[0058] Figure 7 for Figure 2 The third structural diagram of the door opening and closing device when executing the door opening command;

[0059] Figure 8 for Figure 2 The fourth structural diagram of the door opening and closing device when executing the door opening command;

[0060] Fig. 9 for Figure 2 The schematic diagram of the structure of the door opening and closing device when executing the door closing command;

[0061] Fig.10 for Figure 2 The schematic diagram of the process when the door opening and closing device executes the door opening command;

[0062] Fig.11 for Figure 2 The schematic diagram of the flow chart of the door opening and closing device when executing the door closing command.

[0063] Description of reference numerals:

[0064] 100-door opening and closing device; 10-power mechanism; 11-drive motor; 12-diverter gear; 13-worm; 14-input gear; 20-first transmission mechanism; 21-first transmission gear; 30-second transmission mechanism; 31-second transmission gear; 32-drive gear; 33-driven gear; 34-output gear; 35-reduction gear; 36-transition gear; 40-door push mechanism; 41-incomplete gear; 42-push rod; 421-matching tooth; 43-reset member; 50-swing door mechanism; 51-rocker; 60-clutch; 70-potentiometer; 80-reset switch; 200-refrigerator; 201-cabinet; 202-door body. DETAILED DESCRIPTION

[0065] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0066] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and common meanings.

[0067] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0068] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0069] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0070] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0071] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0072] The refrigerator 200 is a refrigeration device that keeps a constant low temperature, and is also a civilian product that keeps food or other items at a constant low temperature. In the prior art, there is a refrigerator 200 with an automatic door opening and closing to improve the convenience of user operation and the safety of use.

[0073] Due to the suction force of the door seal, the resistance of the suction aid, the internal and external pressure difference, etc., the force required for the door body 202 to open the door is relatively large. At present, the refrigerator 200 with automatic door opening and closing usually uses a push rod actuator to push the door body 202 to a certain angle first, and then relies on a rotary actuator to drive the rotating shaft to rotate, driving the entire door body 202 to rotate and open. Due to the limited installation space, the driving force of the automatic door opening and closing power source is limited. Therefore, a driving mechanism is usually used to perform the operations of pushing and rotating to open at the same time.

[0074] However, in order to improve the efficiency of opening and closing the door, when the driving mechanism controls the rotary actuator to fully open or close the door body 202, the push rod actuator is not reset. If the driving mechanism stops driving or performs other operations at this time, it will cause the subsequent automatic opening and closing of the door to be unable to be used normally or interfere with the normal manual door opening.

[0075] In view of this, the present application provides a refrigerator 200, comprising: a box body 201, in which a storage chamber is formed; a door body 202, which is rotatably arranged on the box body 201, and the door body 202 is used to open or close the storage chamber; a door opening and closing device 100, which is arranged on the box body 201 and connected to the door body 202, and the door opening and closing device 100 is configured to open or close the door body 202; the door opening and closing device 100 comprises a power mechanism 10, a first transmission mechanism 20, a second transmission mechanism 30, a door push mechanism 40, a door rotating mechanism 50, a clutch 60, a potentiometer 70, a reset switch 80 and a control unit, and the control unit is electrically connected to the power mechanism 10, the clutch 60, the potentiometer 70 and the reset switch 80,

[0076] When the door opening and closing device 100 executes a door opening command, the power mechanism 10 outputs a driving force to drive the door pushing mechanism 40 to push the door body 202 open; when the door opening and closing device 100 executes a door closing command, the power mechanism 10 outputs a reverse driving force to drive the door swinging mechanism 50 to close the door body 202;

[0077] The potentiometer 70 is configured to detect the angle of rotation of the door body 202 and output a voltage signal, wherein the voltage signal includes a top-opening signal, an opening signal and a closing signal; when the potentiometer 70 outputs a top-opening signal, the clutch 60 switches to connection, the power mechanism 10 outputs a driving force, and drives the swing door mechanism 50 to open the door body 202; when the potentiometer 70 outputs an opening signal, the clutch 60 switches to separation, the power mechanism 10 outputs a driving force, and drives the push door mechanism 40 to reset; when the potentiometer 70 outputs a closing signal, the clutch 60 switches to separation, the power mechanism 10 outputs a driving force, and drives the push door mechanism 40 to reset;

[0078] The reset switch 80 is configured to detect whether the door-pushing mechanism 40 is reset and output a reset signal; when the reset switch 80 outputs the reset signal, the power mechanism 10 stops.

[0079] By connecting the potentiometer 70 to the swing door mechanism 50 and setting the reset switch 80 on the push door mechanism 40, when the door opening and closing operation is performed, as the rotation angle of the door body 202 changes, the signal output by the potentiometer 70 will also change. The control unit can judge the current operation state according to the signal output by the potentiometer 70, and control the power mechanism 10 and the clutch 60 to work accordingly. When the door opening operation is performed, if the potentiometer 70 outputs an open signal, it indicates that the door body 202 has been opened normally and the push door mechanism 40 needs to be reset. When the door closing operation is performed, if the potentiometer 70 outputs a close signal, it indicates that the door body 202 has been closed normally and the push door mechanism 40 also needs to be reset. At this time, the control unit controls the power mechanism 10 to output the driving force and switches the clutch 60 to separation, thereby driving the push door mechanism 40 to reset. When the reset switch 80 detects that the push door mechanism 40 is reset, it outputs a reset signal, indicating that the door opening and closing device 100 has been completely reset and the next operation can be performed. At this time, the control unit controls the power mechanism 10 to stop. In this way, the mechanism can be reset after automatic door opening and closing, so that subsequent automatic door opening and closing can proceed normally without interfering with normal manual door opening and closing operations.

[0080] Figure 1 A schematic diagram of the structure of a refrigerator provided in an embodiment of the present application.

[0081] like Figure 1 As shown, the refrigerator 200 provided in the embodiment of the present application includes a box body 201, and a storage chamber is formed inside the box body 201.

[0082] The refrigerator 200 provided in the embodiment of the present application includes a door body 202, which is rotatably arranged on a box body 201. The door body 202 is used to close the storage chamber. The door opening and closing device 100 is arranged on the box body 201 and connected to the door body 202.

[0083] Specifically, the door body 202 is hinged to the opening of the storage chamber on the box body 201 through a rotating shaft.

[0084] In some embodiments, a door body 202 is respectively provided on both sides of the storage chamber opening, and the two door bodies 202 rotate relative to each other, thereby fully opening the storage chamber.

[0085] In other embodiments, a door body 202 is provided on one side of the storage chamber opening, and the door body 202 rotates relative to the box body 201 to open the storage chamber.

[0086] The refrigerator 200 provided in the embodiment of the present application includes a door opening and closing device 100. The door opening and closing device 100 is used to drive the door body 202 to rotate to open or close the storage chamber.

[0087] The door opening and closing device 100 is arranged on the box body 201 and connected to the door body 202. The door opening and closing device 100 is used to first push the door body 202 open a certain distance, and then drive the door body 202 to rotate to open the storage room.

[0088] Figure 2 for Figure 1 One of the structural schematic diagrams of the door opening and closing device of the refrigerator shown. Figure 3 for Figure 1 The second structural schematic diagram of the door opening and closing device of the refrigerator shown.

[0089] like Figure 2 and Figure 3 As shown, the door opening and closing device 100 includes a power mechanism 10, a first transmission mechanism 20, a second transmission mechanism 30, a door push mechanism 40, a door swing mechanism 50, a clutch 60, a potentiometer 70, a reset switch 80 and a control unit.

[0090] The control unit is electrically connected to the power mechanism 10 , the clutch 60 , the potentiometer 70 and the reset switch 80 . The control unit is used to control the operating states of the power mechanism 10 , the clutch 60 , the potentiometer 70 and the reset switch 80 .

[0091] The power mechanism 10 is used to provide a driving force for opening and closing the door. The first transmission mechanism 20 and the second transmission mechanism 30 are respectively connected to the power mechanism 10. The door push mechanism 40 is connected to the first transmission mechanism 20. The door swing mechanism 50 is connected to the second transmission mechanism 30.

[0092] Specifically, the power mechanism 10 is configured to output driving force and reverse driving force. The power mechanism 10 is connected to the door push mechanism 40 through the first transmission mechanism 20 , and the power mechanism 10 is connected to the door swing mechanism 50 through the second transmission mechanism 30 .

[0093] The clutch 60 is arranged on the second transmission mechanism 30. The potentiometer 70 is transmission-connected with the swing door mechanism 50. The reset switch 80 is arranged on the push door mechanism 40. The push door mechanism 40 is used to push open the door body 202. The swing door mechanism 50 is used to rotate the door body 202 to open. The clutch 60 is used to separate or engage the transmission connection between the second transmission mechanism 30 and the swing door mechanism 50, so that the driving force provided by the power mechanism 10 can be switched whether to be transmitted to the swing door mechanism 50. The potentiometer 70 is used to detect the rotation angle of the door body 202. The reset switch 80 is used to detect whether the push door mechanism 40 is reset.

[0094] Figure 4 for Figure 2 One of the structural schematic diagrams of the door opening and closing device when executing the door opening command. Figure 5 A schematic diagram of the structure of a refrigerator provided in an embodiment of the present application when executing a door opening command. Figure 6 for Figure 2 The second structural schematic diagram of the door opening and closing device when executing the door opening command is shown. Figure 7 for Figure 2 The third structural schematic diagram of the door opening and closing device when executing the door opening command. Figure 8 for Figure 2 The fourth structural schematic diagram of the door opening and closing device when executing the door opening command is shown.

[0095] When opening and closing the door, Figures 4 to 8 As shown, when the door opening and closing device 100 receives the door opening command, the control unit first executes the step of pushing the door body 202 open, controls the power mechanism 10 to output the driving force, controls the clutch 60 to switch to separation, so that the transmission connection between the second transmission mechanism 30 and the swing door mechanism 50 is separated, and the power mechanism 10 transmits the driving force to the door pushing mechanism 40 through the first transmission mechanism 20, so as to push the door body 202 open a certain distance through the door pushing mechanism 40, as shown in FIG. Figure 5 and Figure 6 As shown;

[0096] Then, the control unit executes the step of rotating the door body 202 to open, controls the power mechanism 10 to output the driving force, controls the clutch 60 to switch to connection, and makes the second transmission mechanism 30 and the swing door mechanism 50 transmission connected, and the power mechanism 10 transmits the driving force to the swing door mechanism 50 through the second transmission mechanism 30, so as to rotate the door body 202 to open through the swing door mechanism 50. Figure 7 As shown;

[0097] Finally, the control unit executes the step of resetting the door push mechanism 40, controls the power mechanism 10 to output the driving force, controls the clutch 60 to switch to the disengaged state, and the power mechanism 10 transmits the driving force to the door push mechanism 40 through the first transmission mechanism 20 to drive the door push mechanism 40 to reset. Figure 8 As shown, after resetting, the control power mechanism 10 stops.

[0098] like Fig. 9 As shown, when the door opening and closing device 100 receives the door closing command, the control unit first executes the step of closing the door body 202, controls the power mechanism 10 to output the reverse driving force, controls the clutch 60 to switch to the connection, so that the second transmission mechanism 30 and the swing door mechanism 50 are connected in transmission, and the power mechanism 10 transmits the reverse driving force to the swing door mechanism 50 through the second transmission mechanism 30, so as to close the door body 202 through the swing door mechanism 50;

[0099] Finally, the control unit executes the step of resetting the door push mechanism 40, controls the power mechanism 10 to output the driving force, controls the clutch 60 to switch to the disengaged state, and the power mechanism 10 transmits the driving force to the door push mechanism 40 through the first transmission mechanism 20 to drive the door push mechanism 40 to reset. Figure 4As shown, after resetting, the control power mechanism 10 stops.

[0100] Specifically, the potentiometer 70 is connected to the revolving door mechanism 50 in a transmission manner, and the potentiometer 70 is used to detect the angle of rotation of the door body 202 according to the rotation of the revolving door mechanism 50. When the door body 202 rotates, the voltage value output by the potentiometer 70 changes, thereby forming different voltage signals. According to the requirements of opening and closing the door, the voltage signal includes a push-open signal U1, an open signal U2, and a close signal U0. Among them, the push-open signal U1 represents the voltage value corresponding to the angle of rotation of the door body 202 when the door push mechanism 40 pushes the door body 202 open; the open signal U2 represents the voltage value corresponding to the angle of rotation of the door body 202 after the revolving door mechanism 50 rotates and opens the door body 202; and the close signal U0 represents the voltage value corresponding to the angle of rotation of the door body 202 when the revolving door mechanism 50 closes the door body 202. The reset switch 80 is provided on the push door mechanism 40, and the reset switch 80 is used to output a reset signal when the reset of the push door mechanism 40 is detected. It can be understood that U0<U1<U2.

[0101] Therefore, when the door opening and closing device 100 receives the door opening command, the control unit first executes the step of pushing open the door body 202, and pushes the door body 202 open through the door pushing mechanism 40; then, when the door pushing mechanism 40 pushes the door body 202 into place, the potentiometer 70 outputs the push opening signal U1, at this time, the control unit executes the step of rotating the door body 202 to open, and rotates the door body 202 to open through the revolving door mechanism 50; then, when the revolving door mechanism 50 rotates the door body 202 to open, the potentiometer 70 outputs the opening signal U2, at this time, the control unit executes the step of resetting the door pushing mechanism 40, controls the power mechanism 10 to output the driving force, and drives the door pushing mechanism 40 to reset, and finally, when the door pushing mechanism 40 is reset, the reset switch 80 outputs the reset signal, at this time, the control unit controls the power mechanism 10 to stop, and completes the door opening operation.

[0102] When the door opening and closing device 100 receives the door opening command, the control unit first executes the step of closing the door body 202, and closes the door body 202 through the swing door mechanism 50; then, when the swing door mechanism 50 closes the door body 202, the potentiometer 70 outputs a closing signal U0. At this time, the control unit executes the step of resetting the door pushing mechanism 40, controls the power mechanism 10 to output a driving force, and drives the door pushing mechanism 40 to reset. Finally, when the door pushing mechanism 40 is reset, the reset switch 80 outputs a reset signal. At this time, the control unit controls the power mechanism 10 to stop and completes the door closing operation.

[0103] In some embodiments of the present application, the power mechanism 10 includes a driving motor 11 and a diverter gear 12. The driving motor 11 is disposed on the housing 201. The diverter gear 12 is rotatably disposed on the housing 201 and is in transmission connection with the driving motor 11. The first transmission mechanism 20 and the second transmission mechanism 30 are respectively in transmission connection with the diverter gear 12. The driving motor 11 is electrically connected to the control unit. The driving motor 11 is used to rotate forward or reversely under the control of the control unit, thereby outputting driving force and reverse driving force.

[0104] The output of driving force by the driving motor 11 can improve the accuracy of the output driving force of the power mechanism 10. The output driving force is split by the splitter gear 12, which is convenient for arranging the first transmission mechanism 20 and the second transmission mechanism 30 so that they rotate separately.

[0105] In some embodiments of the present application, the power mechanism 10 further includes a worm 13 and an input gear 14. The worm 13 is disposed on the driving shaft of the driving motor 11. The input gear 14 is rotatably disposed on the housing 201. The worm 13 meshes with the input gear 14, and the input gear 14 meshes with the diverter gear 12, thereby transmitting the driving force of the driving motor 11 to the diverter gear 12.

[0106] By setting the worm 13 and the input gear 14, the direction of the driving force output by the drive motor 11 can be changed, which is convenient for arranging the drive motor 11, thereby adjusting the setting position of the drive motor 11 in the refrigerator 200 and making the overall structure of the door opening and closing device 100 more compact.

[0107] In some embodiments of the present application, the input gear 14 and / or the diverter gear 12 use double gears, thereby converting the high-speed rotation output by the drive motor 11 into a low-speed and high-torque output, thereby increasing the torque of the driving force and facilitating the use of the push door mechanism 40 and the rotating door mechanism 50.

[0108] In some embodiments of the present application, the first transmission mechanism 20 includes a first transmission gear 21, which is rotatably disposed on the box body 201. The first transmission gear 21 is meshed with the diverter gear 12, and the door push mechanism 40 is in transmission connection with the first transmission gear 21.

[0109] Through the meshing of the first transmission gear 21 and the diverter gear 12 , the driving force of the driving motor 11 is transmitted to the first transmission gear 21 , and then the door pushing mechanism 40 connected to the first transmission gear 21 is driven.

[0110] In some embodiments of the present application, the door push mechanism 40 includes an incomplete gear 41, a push rod 42 and a reset member 43. The incomplete gear 41 is rotatably disposed on the housing 201. The incomplete gear 41 is in transmission connection with the first transmission gear 21 in the first transmission mechanism 20. The push rod 42 is movably disposed on the housing 201 and moves toward the door body 202. The push rod 42 is intermittently meshed with the incomplete gear 41, and the reset member 43 is disposed on the housing 201, and the reset member 43 is used to reset the push rod 42. The reset switch 80 is disposed on the incomplete gear 41.

[0111] Through the intermittent engagement of the incomplete gear 41 and the push rod 42, the push rod 42 can be disengaged from the transmission after the push rod 42 pushes the door body 202 open, and the push rod 42 can be reset by the reset member 43, thereby preventing the push rod 42 from colliding with the door body 202 when the door body 202 is closed, causing damage or jamming.

[0112] Specifically, the incomplete gear 41 is coaxially arranged with the first transmission gear 21 , so as to transmit the driving force on the first transmission gear 21 to the push rod 42 .

[0113] In some embodiments of the present application, the incomplete gear 41 and the first transmission gear 21 are double gears integrally arranged, thereby converting the high-speed rotation output by the power mechanism 10 into a low-speed and high-torque output, so that the push rod 42 can overcome the door seal suction, the suction aid resistance, the internal and external pressure difference, etc., to push the door open.

[0114] Since the push rod 42 and the reset member 43 in the door pushing mechanism 40 can automatically reset after the door body 202 is pushed open, a reset switch 80 is set on the incomplete gear 41. The reset state of the door pushing mechanism 40 can be determined by simply detecting the incomplete gear 41, thereby improving the convenience of detection.

[0115] Fig. 9 for Figure 2 The schematic diagram of the structure of the door opening and closing device when executing the door closing command is shown.

[0116] like Figure 7 and Fig. 9 As shown, when the door opening and closing device 100 executes an instruction to push open the door body 202 or close the door body 202, the incomplete gear 41 has not returned to its initial position. Therefore, it is necessary to reset the incomplete gear 41, that is, it is necessary to reset the door pushing mechanism 40 to avoid interference in subsequent operations.

[0117] In some embodiments of the present application, the push rod 42 is provided with a mating tooth 421 , which is arranged along the moving direction of the push rod 42 and located on a side of the push rod 42 close to the incomplete gear 41 , and the mating tooth 421 is meshed with the incomplete gear 41 .

[0118] By providing a matching tooth 421 on the push rod 42 to mesh with the incomplete gear 41, the push rod 42 can be driven by the rotation of the incomplete gear 41 to move and realize the door pushing action.

[0119] In some embodiments of the present application, the reset member 43 is a spring, one end of the spring is connected to the box body 201 , and the other end is connected to the push rod 42 .

[0120] In some embodiments of the present application, the second transmission mechanism 30 includes a second transmission gear 31, a driving gear 32, a driven gear 33 and an output gear 34. The second transmission gear 31, the driving gear 32, the driven gear 33 and the output gear 34 are rotatably disposed on the box body 201 respectively.

[0121] The second transmission gear 31 meshes with the diverter gear 12, the driving gear 32 is in transmission connection with the second transmission gear 31, and the driven gear 33 is in transmission connection with the output gear 34. The clutch 60 is used to connect or disconnect the driven gear 33 with the driving gear 32. The swing door mechanism 50 is in transmission connection with the output gear 34.

[0122] Through the meshing of the second transmission gear 31 and the diverter gear 12, the driving force of the drive motor 11 can be transmitted to the second transmission gear 31, and then the driving gear 32 connected to the second transmission gear 31 is driven to rotate, and the driven gear 33 is detachably connected to the driving gear 32 through the clutch 60, thereby realizing the clutch of the second transmission mechanism 30, and the driving force of the power mechanism 10 is output through the output gear 34 connected to the driven gear 33.

[0123] In some embodiments of the present application, the second transmission gear 31 adopts a double gear, thereby converting the high-speed rotation output by the drive motor 11 into a low-speed and high-torque output, thereby increasing the torque of the driving force and facilitating the use of the swing door mechanism 50.

[0124] In some embodiments of the present application, the driving gear 32 and the driven gear 33 are coaxially arranged, and the clutch 60 connects or disconnects the driven gear 33 and the driving gear 32 by driving the clutch member to move axially.

[0125] In some embodiments of the present application, the second transmission mechanism 30 further includes a reduction gear 35. The reduction gear 35 is disposed between the driven gear 33 and the output gear 34. The reduction gear 35 is meshedly connected with the driven gear 33 and the output gear 34 respectively.

[0126] The provision of the reduction gear 35 can also increase the torque output to the output gear 34 , thereby facilitating the swing door mechanism 50 to rotate the door body 202 to open.

[0127] In some embodiments of the present application, the potentiometer 70 is meshingly connected with the reduction gear 35 , so that the rotation angle of the door body 202 is indirectly measured by measuring the rotation of the reduction gear 35 .

[0128] In some embodiments of the present application, the second transmission mechanism 30 further includes a transition gear 36. The transition gear 36 is disposed between the second transmission gear 31 and the driving gear 32. The transition gear 36 is meshedly connected with the second transmission gear 31 and the driving gear 32, respectively, so as to transmission-connect the second transmission gear 31 with the driving gear 32.

[0129] The provision of the transition gear 36 facilitates the arrangement of the gears and the clutch 60 in the second transmission mechanism 30 , thereby making the structure of the second transmission mechanism 30 more compact.

[0130] In some embodiments of the present application, the swing door mechanism 50 includes a swing rod 51, which is rotatably disposed on the box body 201 and connected to the door body 202. The swing rod 51 is transmission-connected to the second transmission mechanism 30.

[0131] By rotating the swing rod 51 and connecting the swing rod 51 to the door body 202 , the swing rod 51 can be driven to rotate through the second transmission mechanism 30 , thereby driving the door body 202 to rotate and open the door body 202 .

[0132] In some embodiments of the present application, the axis of the output gear 34 coincides with the rotation axis of the door body 202. The swing rod 51 is disposed on the output gear 34 and rotates coaxially with the output gear 34.

[0133] By coaxially arranging the output gear 34, the swing rod 51 and the door body 202, the swing door mechanism 50 can drive the door body 202 to rotate in a simple manner. It is only necessary to connect the end of the swing rod 51 away from the output gear 34 to the door body 202 to drive the swing rod 51 to rotate.

[0134] In some embodiments of the present application, the receiving end of the reset switch 80 can adopt a reflective photoelectric sensor or a Hall sensor. When using a photoelectric sensor, the main body of the incomplete gear 41 is black, and the area corresponding to the photoelectric sensor is bright or white as the signal transmitting end; when using a Hall sensor, a permanent magnet is arranged at the position of the incomplete gear 41 corresponding to the sensor as the signal transmitting end.

[0135] In some embodiments of the present application, the control unit controls the operation of the power mechanism 10, the clutch 60, the potentiometer 70 and the reset switch 80 and responds to the user's operation through various software control programs stored in the memory.

[0136] In some embodiments, a smart device (such as a mobile terminal, a tablet computer, a computer, a laptop computer, etc.) may also be used to control the control unit. For example, an application running on the smart device may be used to control the control unit.

[0137] The refrigerator 200 provided in the embodiment of the present application includes: a box body 201, in which a storage chamber is formed; a door body 202, which is rotatably arranged on the box body 201, and the door body 202 is used to close the storage chamber; a door opening and closing device 100, which is arranged on the box body 201 and connected to the door body 202, and the door opening and closing device 100 is configured to open or close the door body 202; the door opening and closing device 100 includes a power mechanism 10, a first transmission mechanism 20, a second transmission mechanism 30, a door push mechanism 40, a door rotating mechanism 50, a clutch 60, a potentiometer 70, a reset switch 80 and a control unit The control unit is electrically connected to the power mechanism 10, the clutch 60, the potentiometer 70 and the reset switch 80. The power mechanism 10 is connected to the door push mechanism 40 through the first transmission mechanism 20, and the power mechanism 10 is connected to the door swing mechanism 50 through the second transmission mechanism 30. The power mechanism 10 is configured to output a driving force and a reverse driving force. When the door opening and closing device 100 executes a door opening command, the power mechanism 10 outputs a driving force to drive the door push mechanism 40 to push the door body 202 open. When the door opening and closing device 100 executes a door closing command, the power mechanism 10 outputs a driving force to drive the door push mechanism 40 to push the door body 202 open. Reverse driving force drives the swing door mechanism 50 to close the door body 202; the clutch 60 is arranged in the second transmission mechanism 30, and the clutch 60 is configured to connect or separate the second transmission mechanism 30 with the swing door mechanism 50, and the potentiometer 70 is connected to the swing door mechanism 50 in a transmission manner, and the potentiometer 70 is configured to detect the rotation angle of the door body 202 and output a voltage signal, and the voltage signal includes a top opening signal U1, an opening signal U2 and a closing signal U0; when the potentiometer 70 outputs the top opening signal U1, the clutch 60 switches to connection, and the power mechanism 10 outputs a driving force to drive The revolving door mechanism 50 opens the door body 202; when the potentiometer 70 outputs an opening signal U2, the clutch 60 switches to separation, and the power mechanism 10 outputs a driving force to drive the door pushing mechanism 40 to reset; when the potentiometer 70 outputs a closing signal U0, the clutch 60 switches to separation, and the power mechanism 10 outputs a driving force to drive the door pushing mechanism 40 to reset; the reset switch 80 is provided on the door pushing mechanism 40, and the reset switch 80 is configured to detect whether the door pushing mechanism 40 is reset and output a reset signal; when the reset switch 80 outputs a reset signal, the power mechanism 10 stops.

[0138] By connecting the potentiometer 70 to the swing door mechanism 50 and setting the reset switch 80 on the push door mechanism 40, when the door opening and closing operation is performed, as the rotation angle of the door body 202 changes, the signal output by the potentiometer 70 will also change. The control unit can judge the current operation state according to the signal output by the potentiometer 70, and control the power mechanism 10 and the clutch 60 to work accordingly. When the door opening operation is performed, if the potentiometer 70 outputs the opening signal U2, it indicates that the door body 202 has been opened normally and the push door mechanism 40 needs to be reset. When the door closing operation is performed, if the potentiometer 70 outputs the closing signal U0, it indicates that the door body 202 has been closed normally and the push door mechanism 40 also needs to be reset. At this time, the control unit controls the power mechanism 10 to output the driving force and switches the clutch 60 to separation, thereby driving the push door mechanism 40 to reset. When the reset switch 80 detects that the push door mechanism 40 is reset, it outputs the reset signal, indicating that the door opening and closing device 100 has been completely reset and the next operation can be performed. At this time, the control unit controls the power mechanism 10 to stop. In this way, the mechanism can be reset after automatic door opening and closing, so that subsequent automatic door opening and closing can proceed normally without interfering with normal manual door opening and closing operations.

[0139] Fig.10 for Figure 2 The schematic diagram of the process flow when the door opening and closing device executes the door opening command is shown. Fig.11 for Figure 2 The schematic diagram of the flow chart of the door opening and closing device when executing the door closing command.

[0140] like Fig.10 and Fig.11 As shown, the embodiment of the present application also provides a door opening and closing control method, which is used in the upper refrigerator 200. The door opening and closing control method includes:

[0141] When the door opening and closing device 100 receives the door opening command, the following steps are performed:

[0142] S101: a push-opening step, controlling the power mechanism 10 to output a driving force, controlling the clutch 60 to switch to a disengaged state, so as to push the door body 202 open through the door-pushing mechanism 40;

[0143] S102: opening step, when the potentiometer 70 outputs the top opening signal U1, the power mechanism 10 is controlled to output the driving force, and the clutch 60 is controlled to switch to connection, so as to open the door body 202 through the swing door mechanism 50;

[0144] S103: Door opening reset step, when the potentiometer 70 outputs the opening signal U2, the power mechanism 10 is controlled to output the driving force, and the clutch 60 is controlled to switch to the disengagement state to drive the door push mechanism 40 to reset, and when the reset switch 80 outputs the reset signal, the power mechanism 10 is controlled to stop;

[0145] When the door opening and closing device 100 receives the door closing instruction, the following steps are performed:

[0146] S201: a door closing step, controlling the power mechanism 10 to output a reverse driving force, controlling the clutch 60 to switch to connection, so as to close the door body 202 through the swing door mechanism 50;

[0147] S202: Door closing reset step. When the potentiometer 70 outputs the closing signal U0, the power mechanism 10 is controlled to output the driving force, and the clutch 60 is controlled to switch to separation to drive the door push mechanism 40 to reset. When the reset switch 80 outputs the reset signal, the power mechanism 10 is controlled to stop.

[0148] In some embodiments, the door 202 of the refrigerator 200 is in a half-open state, and the door opening and closing control command is executed. The door opening and closing control method also includes:

[0149] When the door opening and closing device 100 receives the door opening command, the judgment step is performed:

[0150] The voltage signal U output by the potentiometer 70 is judged. If U0≤U<U1, the top opening step is executed; if U1≤U<U2, the opening step is executed; if U2=U, the door opening and resetting step is executed.

[0151] When U0≤U<U1, U0=U, indicating that the door body 202 is in a closed state, and U<U1, indicating that the door body 202 is in a slightly open state, but does not exceed the top opening distance of the door pushing mechanism 40. Therefore, the door opening and closing device 100 follows the normal door opening steps.

[0152] When U1≤U<U2, it indicates that the door body 202 is in a half-open state and has exceeded the top opening distance of the door pushing mechanism 40. Therefore, the door pushing mechanism 40 does not need to work and can directly start from the opening step of driving the rotating door mechanism 50.

[0153] When U2=U, it indicates that the door body 202 is in a fully open state. At this time, the door push mechanism 40 and the door swing mechanism 50 do not need to work, so the door opening and resetting step can be performed directly.

[0154] Through the above-mentioned door opening and closing control method, the mechanism can be reset after automatic door opening and closing, so that subsequent automatic door opening and closing can be carried out normally without interfering with normal manual door opening and closing operations.

[0155] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0156] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that: The refrigerator comprises: A box body (201) having a storage room formed therein; A door body (202) is rotatably mounted on the box body (201), and the door body (202) is used to open or close the storage chamber; A door opening and closing device (100) is disposed on the box body (201) and connected to the door body (202), and the door opening and closing device (100) is configured to open or close the door body (202); The door opening and closing device (100) comprises a power mechanism (10), a first transmission mechanism (20), a second transmission mechanism (30), a door-pushing mechanism (40), a door-swinging mechanism (50), a clutch (60), a potentiometer (70), a reset switch (80) and a control unit, wherein the control unit is electrically connected to the power mechanism (10), the clutch (60), the potentiometer (70) and the reset switch (80); The power mechanism (10) is transmission-connected to the door-pushing mechanism (40) via the first transmission mechanism (20), and the power mechanism (10) is transmission-connected to the door-swinging mechanism (50) via the second transmission mechanism (30), and the power mechanism (10) is configured to output a driving force and a reverse driving force; The clutch (60) is arranged in the second transmission mechanism (30), and the clutch (60) is configured to connect or disconnect the second transmission mechanism (30) and the swing door mechanism (50); The potentiometer (70) is in transmission connection with the rotating door mechanism (50), and the potentiometer (70) is configured to detect the rotation angle of the door body (202) and output a voltage signal; wherein the voltage signal includes a top-opening signal, an opening signal, and a closing signal; The reset switch (80) is arranged on the door-pushing mechanism (40), and the reset switch (80) is configured to detect whether the door-pushing mechanism (40) is reset and output a reset signal; The control unit is configured to: When the door opening and closing device (100) executes a door opening command, the power mechanism (10) outputs a driving force and drives the door pushing mechanism (40) through the first transmission mechanism (20) to push open the door body (202); when the door opening and closing device (100) executes a door closing command, the power mechanism (10) outputs a reverse driving force and drives the door swinging mechanism (50) through the second transmission mechanism (30) to close the door body (202); When the potentiometer (70) outputs the top-opening signal, the clutch (60) connects the second transmission mechanism (30) and the swing door mechanism (50), the power mechanism (10) outputs a driving force, and drives the swing door mechanism (50) through the second transmission mechanism (30) to open the door body (202); When the potentiometer (70) outputs the opening signal, the clutch (60) causes the second transmission mechanism (30) to separate from the swing door mechanism (50), and the power mechanism (10) outputs a driving force to drive the push door mechanism (40) to reset via the first transmission mechanism (20); When the potentiometer (70) outputs the closing signal, the clutch (60) causes the second transmission mechanism (30) to separate from the swing door mechanism (50), and the power mechanism (10) outputs a driving force to drive the push door mechanism (40) to reset via the first transmission mechanism (20); When the reset switch (80) outputs the reset signal, the power mechanism (10) stops.

2. The refrigerator according to claim 1, characterized in that: The door-pushing mechanism (40) comprises an incomplete gear (41), a push rod (42) and a reset member (43); The incomplete gear (41) is rotatably disposed on the box (201), and the incomplete gear (41) is transmission-connected to the first transmission mechanism (20); The push rod (42) is disposed on the box body (201) so as to be movable toward the door body (202), and the push rod (42) is intermittently meshed with the incomplete gear (41); The reset member (43) is disposed on the box body (201), and the reset member (43) is configured to reset the push rod (42). The reset switch (80) is disposed on the incomplete gear (41).

3. The refrigerator according to claim 2, characterized in that: The push rod (42) is provided with a matching tooth (421), which is arranged along the moving direction of the push rod (42) and is located on a side of the push rod (42) close to the incomplete gear (41), and the matching tooth (421) is meshed with the incomplete gear (41).

4. The refrigerator according to claim 1, characterized in that: The swing door mechanism (50) comprises a swing rod (51), the swing rod (51) is rotatably arranged on the box body (201) and connected to the door body (202), the swing rod (51) is transmission-connected to the second transmission mechanism (30), and the potentiometer (70) is transmission-connected to the swing rod (51).

5. The refrigerator according to claim 1, characterized in that: The power mechanism (10) comprises a driving motor (11) and a diverter gear (12); the driving motor (11) is arranged on the housing (201); the diverter gear (12) is transmission-connected to the driving motor (11); and the first transmission mechanism (20) and the second transmission mechanism (30) are transmission-connected to the diverter gear (12), respectively.

6. The refrigerator according to claim 5, characterized in that: The power mechanism (10) further comprises a worm (13) and an input gear (14); the worm (13) is arranged on a drive shaft of the drive motor (11); the worm (13) meshes with the input gear (14); and the diverter gear (12) meshes with the input gear (14).

7. The refrigerator according to claim 5, characterized in that: The first transmission mechanism (20) comprises a first transmission gear (21), the first transmission gear (21) is meshed with the diverter gear (12), and the door-pushing mechanism (40) is transmission-connected to the first transmission gear (21).

8. The refrigerator according to claim 5, characterized in that: The second transmission mechanism (30) comprises a second transmission gear (31), a driving gear (32), a driven gear (33) and an output gear (34); the second transmission gear (31) is meshed with the diverter gear (12); the driving gear (32) is transmission-connected to the second transmission gear (31); and the driven gear (33) is transmission-connected to the output gear (34); The clutch (60) is configured to connect or disconnect the driven gear (33) and the driving gear (32), and the swing door mechanism (50) is drivingly connected to the output gear (34).

9. The refrigerator according to claim 8, characterized in that: The second transmission mechanism (30) further comprises a reduction gear (35), wherein the reduction gear (35) is arranged between the driven gear (33) and the output gear (34), and the reduction gear (35) is meshedly connected to the driven gear (33) and the output gear (34) respectively.

10. A door opening and closing control method, used in the refrigerator (200) according to any one of claims 1 to 9, characterized in that: When the door opening and closing device (100) receives a door opening instruction, the following steps are performed: a push-opening step, controlling the power mechanism (10) to output a driving force, controlling the clutch (60) to switch to a disengaged state, so as to push open the door body (202) through the door-pushing mechanism (40); an opening step, when the potentiometer (70) outputs the push-open signal, controlling the power mechanism (10) to output a driving force, and controlling the clutch (60) to switch to connection, so as to open the door body (202) through the swing door mechanism (50); a door opening reset step, when the potentiometer (70) outputs the opening signal, controlling the power mechanism (10) to output a driving force, controlling the clutch (60) to switch to separation, so as to drive the door push mechanism (40) to reset, and when the reset switch (80) outputs the reset signal, controlling the power mechanism (10) to stop; When the door opening and closing device (100) receives a door closing instruction, the following steps are performed: a door closing step, controlling the power mechanism (10) to output a reverse driving force, and controlling the clutch (60) to switch to connection, so as to close the door body (202) through the swing door mechanism (50); In the door closing reset step, when the potentiometer (70) outputs the closing signal, the power mechanism (10) is controlled to output the driving force, and the clutch (60) is controlled to switch to separation to drive the door push mechanism (40) to reset; when the reset switch (80) outputs the reset signal, the power mechanism (10) is controlled to stop.

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