Refrigerator

Abstract

The utility model provides a refrigerator. The refrigerator comprises a refrigerator body; the door body is connected to the box body in a sliding manner; the automatic switch unit comprises a driving mechanism, the driving mechanism comprises a driving motor, and the driving motor is configured to provide driving force; the executing mechanism is connected with the driving motor; the control circuit unit is electrically connected with the driving motor and comprises a main power supply and an auxiliary power supply, and one of the main power supply and the auxiliary power supply is selected to be electrically connected with the driving motor; when the main power source is electrically connected with the driving motor, the driving motor rotates in the first direction, so that the executing mechanism moves away from the box body under the action of driving force; and when the executing mechanism is in the third state and the auxiliary power supply is electrically connected with the driving motor, the driving motor rotates in the second direction, so that the executing mechanism moves close to the box body under the action of the driving force. When the push rod has a reset fault, the push rod can be reset, the door body can be closed, and therefore normal operation of the refrigerator can be guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a refrigerator. Background Art

[0002] As living standards improve, people have a greater demand for the automation of refrigerator doors. Refrigerators are equipped with automatic door opening and closing devices to improve the intelligence of refrigerators and improve user experience.

[0003] In the process of conceiving and implementing this application, the applicant found that there are at least the following problems: if there is an unexpected power outage during the operation of the motor, the rack and the gear are still in meshing state, and the push rod cannot be retracted, the refrigerator door cannot be closed, the cold air leaks rapidly, and the user's use is affected.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art.

[0005] Application Contents

[0006] The main purpose of the present application is to provide a refrigerator, which can reset the push rod and close the door when a push rod reset failure occurs, thereby ensuring that the refrigerator can operate normally.

[0007] To achieve the above objectives, in a first aspect, the present application provides a refrigerator, comprising:

[0008] Box;

[0009] The door body is slidably connected to the box body;

[0010] An automatic switching unit comprising:

[0011] A driving mechanism, the driving mechanism comprising a driving motor, the driving motor being configured to provide a driving force;

[0012] An actuator connected to the drive motor;

[0013] A control circuit unit, which is electrically connected to the drive motor, the control circuit unit includes a main power supply and an auxiliary power supply, and one of the main power supply and the auxiliary power supply is electrically connected to the drive motor;

[0014] When the main power supply is electrically connected to the drive motor, the drive motor rotates in a first direction so that the actuator moves away from the box under the action of the driving force;

[0015] When the actuator is in the third state, when the auxiliary power supply is electrically connected to the drive motor, the drive motor rotates in the second direction, so that the actuator moves closer to the box under the action of the driving force;

[0016] The first direction and the second direction are opposite.

[0017] The beneficial effect of the present application is that by controlling the setting of the circuit unit, when the push rod fails to reset, the drive motor can be controlled to reverse, so that the push rod can be reset so that the door body can be closed, thereby ensuring the normal operation of the refrigerator and improving the functional reliability of the refrigerator.

[0018] Based on the above technical solution, the present application can also be improved as follows.

[0019] In some optional embodiments, when the main power supply is electrically connected to the drive motor, the auxiliary power supply is in a charging state;

[0020] When the main power supply is in a power-off state, the auxiliary power supply is in a discharging state.

[0021] It should be noted that in order to ensure the sustainability of the auxiliary power supply replacing the main power supply to supply power to the drive motor when the main power supply is abnormal, the auxiliary power supply is in a charging state when the main power supply is supplied, which provides continuity for the subsequent discharge work and improves the stability of the control circuit unit. When the push rod is extended and has not reached the preset position, the main power supply is cut off or fails, and the auxiliary power supply supplies power to the drive motor, causing the push rod to retract.

[0022] In some optional embodiments, the auxiliary power source is one of a battery and a capacitor.

[0023] In some optional embodiments, the control circuit unit further includes a conduction module and a micro-control module, the conduction module includes a first conduction member and a second conduction member, the micro-control module is used to send a forward and reverse control signal to the drive motor, and the second conduction member collects the forward and reverse control signal;

[0024] When the main power supply is electrically connected to the drive motor, the first conductive member is in a conductive state, and the drive motor, the main power supply and the first conductive member form a first conductive path;

[0025] When the auxiliary power supply is electrically connected to the drive motor, the second conductive member is in a conductive state, and the drive motor, the auxiliary power supply and the second conductive member form a second conductive path.

[0026] In some optional embodiments, the conduction module further includes a first diode and a second diode, one end of the auxiliary power supply is grounded, the first diode is connected between the main power supply and the other end of the auxiliary power supply, and the second diode is connected between the main power supply and the first diode;

[0027] The first diode and the second diode are located in the first conduction path.

[0028] It should be noted that the first diode and the second diode provide guidance for the connection between the main power supply and the drive motor and provide unidirectional conduction. In addition, they also provide guidance for charging the auxiliary power supply.

[0029] In some optional embodiments, the conduction module further includes a third diode, the third diode is connected between the auxiliary power supply and the drive motor, and the third diode is located in the second conduction path;

[0030] The conduction direction of the third diode is opposite to the conduction direction of the first diode.

[0031] In some optional embodiments, at least one of the first conductive member and the second conductive member is a triode;

[0032] The emitter of the first conductive element and the emitter of the second conductive element are both grounded, the base of the first conductive element is connected to the main power supply, the collector of the first conductive element is connected to the first diode, the base of the second conductive element is connected to the third diode, and the collector of the second conductive element collects the forward and reverse control signal.

[0033] In some optional implementations, the control circuit unit further includes a first resistor, a second resistor, a third resistor, and a fourth resistor;

[0034] The first resistor is arranged between the base of the first conductive element and the emitter of the first conductive element, the second resistor is arranged between the first resistor and the main power supply, the third resistor is arranged between the collector of the first conductive element and the base of the second conductive element, and the fourth resistor is arranged between the third diode and the third resistor;

[0035] The main power supply, the drive motor, the first conductive member, the second resistor and the fourth resistor are located in a first conductive path, and the auxiliary power supply, the drive motor, the second conductive member, the third resistor and the fourth resistor are located in a second conductive path.

[0036] In some optional embodiments, the control circuit unit further includes a trigger module, the trigger module includes a controller and a detector, and the detector is electrically connected to the controller;

[0037] The detector is used to detect the working state of the main power supply. When the detector detects that the main power supply is abnormal, it sends an abnormal signal to the controller. The controller controls the auxiliary power supply to be electrically connected to the drive motor according to the received abnormal signal.

[0038] In a second aspect, the present application also provides a refrigerator, comprising:

[0039] Box;

[0040] The door body is slidably connected to the box body;

[0041] An automatic switching unit comprising:

[0042] A driving mechanism, the driving mechanism comprising a driving motor, the driving motor being configured to provide a driving force;

[0043] Executive body;

[0044] The control circuit unit is electrically connected to the drive motor. The control circuit unit is configured to control the drive motor to rotate forward so that the actuator moves away from the box under the action of the driving force; when the actuator is in the third state, the drive motor is controlled to rotate reversely so that the actuator moves closer to the box under the action of the driving force.

[0045] The refrigerator provided in the present application includes: a box body; a door body, which is slidably connected to the box body; an automatic switch unit, which includes: a driving mechanism, the driving mechanism includes a driving motor, and the driving motor is configured to provide a driving force; an actuator, which is connected to the driving motor; a control circuit unit, which is electrically connected to the driving motor, the control circuit unit includes a main power supply and an auxiliary power supply, and the main power supply and the auxiliary power supply are selectively electrically connected to the driving motor; when the main power supply is electrically connected to the driving motor, the driving motor rotates in a first direction so that the actuator moves away from the box body under the action of the driving force; when the actuator is in a third state, when the auxiliary power supply is electrically connected to the driving motor, the driving motor rotates in a second direction so that the actuator moves closer to the box body under the action of the driving force; wherein the first direction and the second direction are opposite.

[0046] By setting the control circuit unit, when the push rod fails to reset, the drive motor can be controlled to reverse, so that the push rod can be reset and the door can be closed, thereby ensuring the normal operation of the refrigerator and improving the functional reliability of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0048] Figure 1 A schematic diagram of the structure of a refrigerator provided in an embodiment of the present application;

[0049] Figure 2 A schematic diagram of the structure of another refrigerator provided in an embodiment of the present application;

[0050] Figure 3 A schematic structural diagram of another refrigerator provided by an embodiment of the present application in a first state;

[0051] Figure 4 A schematic diagram of the structure of another refrigerator provided by an embodiment of the present application in a second state;

[0052] Figure 5 A schematic diagram of the structure of another refrigerator in a third state provided by an embodiment of the present application;

[0053] Figure 6 A schematic diagram of the structure of a control circuit unit in a refrigerator provided in an embodiment of the present application;

[0054] Figure 7 A schematic diagram of the structure of a control circuit unit in a refrigerator in a first state provided by an embodiment of the present application;

[0055] Figure 8 This is a schematic diagram of the structure of the control circuit unit in the refrigerator in the second state provided in an embodiment of the present application.

[0056] Description of reference numerals:

[0057] 100-Refrigerator;

[0058] 110- box body;

[0059] 120-door body; 121-first door body; 1211-hinge; 122-second door body;

[0060] 140-driving mechanism; 141-driving motor; 142-first worm; 143-first worm wheel;

[0061] 150-actuator; 152-push rod; 153-first transmission rack; 154-third elastic member;

[0062] 160-transmission gear train; 161-first transmission gear; 162-second transmission gear;

[0063] 180-housing;

[0064] 200-control circuit unit; 210-main power supply; 220-auxiliary power supply; 230-conduction module; 231-first conduction member; 232-second conduction member; 233-first diode; 234-second diode; 235-third diode; 240-first resistor; 250-second resistor; 260-third resistor; 270-fourth resistor; 280-micro-control module. DETAILED DESCRIPTION

[0065] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are 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 the present application. All other embodiments obtained are within the scope of protection of the present application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0066] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0067] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0068] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0069] At present, in the process of conceiving and implementing this application, the applicant has found at least the following problems:

[0070] If there is an unexpected power outage during the operation of the motor, the rack and gear are still in meshing state, and the push rod cannot be retracted, the refrigerator door cannot be closed, the cold air leaks rapidly, and the user is affected.

[0071] In order to overcome the defects in the prior art, the refrigerator provided in the present application, through the setting of the control circuit unit, can control the driving motor to reverse when a reset failure occurs in the push rod, and can reset the push rod so that the door body can be closed, thereby ensuring the normal operation of the refrigerator and improving the functional reliability of the refrigerator.

[0072] The contents of the present application will be described in detail below in conjunction with the accompanying drawings so that those skilled in the art can understand the contents of the present application more clearly and in detail.

[0073] Figure 1 A schematic diagram of the structure of a refrigerator provided in an embodiment of the present application is shown in FIG. Figure 2 This is a schematic diagram of the structure of another refrigerator provided in an embodiment of the present application. Figure 3 This is a schematic diagram of the structure of another refrigerator provided by an embodiment of the present application in a first state. Figure 4 A schematic diagram of the structure of another refrigerator in a second state provided by an embodiment of the present application, Figure 5 This is a schematic diagram of the structure of another refrigerator in a third state provided by an embodiment of the present application. Figure 6 This is a schematic diagram of the structure of a control circuit unit in a refrigerator provided in an embodiment of the present application. Figure 7 This is a schematic diagram of the structure of a control circuit unit in a refrigerator in a first state provided by an embodiment of the present application. Figure 8 This is a schematic diagram of the structure of the control circuit unit in the refrigerator in the second state provided in an embodiment of the present application.

[0074] like Figures 1 to 8 As shown, the embodiment of the present application provides a refrigerator 100, including:

[0075] Box 110;

[0076] The door body 120 is slidably connected to the box body 110;

[0077] An automatic switching unit comprising:

[0078] A driving mechanism 140, wherein the driving mechanism 140 includes a driving motor 141, and the driving motor 141 is configured to provide a driving force;

[0079] An actuator 150 connected to the drive motor 141;

[0080] A control circuit unit 200, which is electrically connected to the drive motor 141, and the control circuit unit 200 includes a main power supply 210 and an auxiliary power supply 220, and one of the main power supply 210 and the auxiliary power supply 220 is electrically connected to the drive motor 141;

[0081] When the main power supply 210 is electrically connected to the driving motor 141, the driving motor 141 rotates in a first direction, so that the actuator 150 moves away from the box 110 under the action of the driving force;

[0082] When the actuator 150 is in the third state, when the auxiliary power supply 220 is electrically connected to the drive motor 141, the drive motor 141 rotates in the second direction, so that the actuator 150 moves closer to the box body 110 under the action of the driving force;

[0083] The first direction and the second direction are opposite.

[0084] By setting the control circuit unit 200, when the push rod 152 fails to reset, the drive motor 141 can be controlled to reverse, so that the push rod 152 can be reset, so that the door body 120 can be closed, thereby ensuring that the refrigerator 100 can operate normally and improving the functional reliability of the refrigerator 100.

[0085] It should be noted that each structure is described in detail below.

[0086] [Box 110]

[0087] refer to Figure 1 The refrigerator 100 of the embodiment of the present application may include a box body 110 and a door body 120. The box body 110 may be configured with a refrigeration compartment. The refrigeration compartment has an opening for storing food and other items. The number of refrigeration compartments may be one or more. When the number of refrigeration compartments is more than one, the multiple refrigeration compartments may be divided into a refrigeration compartment, a freezing compartment, or a temperature-changing compartment, etc.

[0088] Exemplarily, the box body 110 may include a box shell and a box liner, wherein the box shell is used to define the outer boundary of the refrigerator 100. The box liner may be arranged in the box shell and connected to the box shell. The box liner may be recessed inward to form a refrigeration compartment. An insulation layer may be filled between the box shell and the box liner, and the insulation layer can keep the refrigeration compartment warm, thereby reducing the energy consumption of the refrigerator 100.

[0089] [Door body 120]

[0090] It should be noted that the door body 120 can be connected to the box body 110 to open or close the refrigeration compartment. One door body 120 can be provided for the same refrigeration compartment. Alternatively, two door bodies 120 can be provided for the same refrigeration compartment.

[0091] In some possible implementations of the embodiment of the present application, the door body 120 may be a first door body 121, and the first door body 121 may be rotatably connected to the cabinet 110 around the height direction of the cabinet 110. The first door body 121 may be pulled or pushed so that the first door body 121 rotates relative to the cabinet 110 to open or close the refrigeration compartment.

[0092] It should be noted that the height direction of the cabinet 110 refers to the height direction of the cabinet 110 when the refrigerator 100 is in normal use. Figure 1 The vertical direction Z shown in FIG. illustratively, the first door body 121 may be rotatably connected to the box body 110 via a hinge 1211 .

[0093] In some other possible implementations of the present application, Figure 1As shown, the door body 120 may be a second door body 122 , and the second door body 122 may be slidably connected to the box body 110 along the depth direction of the box body 110 .

[0094] This application is described by taking the first door body 121 as an example.

[0095] [Automatic switch unit]

[0096] The refrigerator 100 of the embodiment of the present application may further include an automatic switch unit, which can be used to automatically open or close the door body 120, thereby improving the convenience of opening and closing the door body 120 and enhancing the user experience.

[0097] In some possible implementations of the present application, the number of automatic switch units may be the same as the number of door bodies 120. That is, one automatic switch unit may be provided corresponding to each door body 120. Each automatic switch unit may automatically open or close the door body 120 corresponding thereto.

[0098] Continue to refer Figures 4 to 7 The automatic switch unit may include a driving mechanism 140 and an actuator 150. The driving mechanism 140 is used to provide a driving force. The actuator 150 may connect the driving mechanism 140 and the door body 120, and is configured to open or close the door body 120 under the action of the driving force.

[0099] [Drive mechanism 140]

[0100] The driving mechanism 140 is used to provide a driving force for the automatic opening and closing unit to open or close the door body 120 .

[0101] For example, reference Figures 1 to 5 The driving mechanism 140 may include a driving motor 141, and the driving motor 141 has a rotatable output shaft, and the output shaft may be connected to the actuator 150 to provide driving force to the actuator 150. It is understandable that the driving motor 141 may be replaced by other components that can provide driving force, such as a pneumatic motor or a hydraulic motor, etc., and this embodiment of the present application will not be described in detail.

[0102] The driving mechanism 140 may further include a first worm 142 and a first worm wheel 143. The first end of the first worm 142 may be connected to the first output shaft of the driving motor 141. The first worm wheel 143 may mesh with the first worm 142 and be transmission-connected to the actuator 150. When the driving mechanism 140 is actuated, the output shaft of the driving motor 141 rotates, the output shaft drives the first worm 142 to rotate, the first worm 142 drives the first worm wheel 143 meshed therewith to rotate, and the first worm wheel 143 drives the actuator 150 to operate to open or close the door body 120. By providing the first worm 142 and the first worm wheel 143, the rotation speed of the driving force provided by the driving motor 141 can be reduced, the torque of the driving force can be increased, and the direction of the driving force can be changed to meet the driving force requirements of the actuator 150.

[0103] [Actuator 150]

[0104] The actuator 150 is used to open the door body 120 under the action of the driving force provided by the driving mechanism 140. In some possible implementations of the embodiment of the present application, the actuator 150 may include a push rod 152, such as Figure 8 As shown, the push rod 152 can slide relative to the box body 110 along the depth direction X and is connected to the driving mechanism 140. The driving mechanism 140 can drive the push rod 152 to slide along the depth direction X to apply a thrust to the door body 120, thereby opening the door body 120 and realizing the function of automatically opening the door body 120.

[0105] The following takes the door body 120 as the first door body 121 as an example to specifically describe the actuator 150. When the door body 120 is the second door body 122, the technical solution can refer to the following description, which will not be repeated in the embodiment of the present application.

[0106] like Figures 3 to 5 As shown, the housing 180 may be provided with a first sliding through hole facing the first door body 121 , and the push rod 152 may be inserted into the first sliding through hole and slidably connected to the housing 180 along the depth direction x.

[0107] When the driving mechanism 140 applies a driving force to the push rod 152 , the push rod 152 can slide relative to the housing 180 and extend through the first sliding through hole to apply a thrust to the first door body 121 , thereby realizing the function of automatically opening the first door body 121 .

[0108] Exemplarily, the actuator 150 may further include a first transmission rack 153, which may be arranged along the depth direction x and connected to the push rod 152. The first transmission rack 153 may be meshed with the transmission gear train 160. The driving mechanism 140 may drive the first transmission rack 153 to move through the transmission gear train 160, thereby driving the push rod 152 to extend from the housing 180. The transmission gear train 160 and the first transmission rack 153 have high transmission efficiency and transmission accuracy, which can reduce the requirements for the driving power of the driving mechanism 140, thereby reducing the component cost of the automatic switch unit; and can enhance the stability during transmission, thereby improving the stability of the push rod 152 when sliding relative to the housing 180.

[0109] The actuator 150 may further include a third elastic member 154, which connects the push rod 152 and the housing 180 to apply a first force opposite to the depth direction x to the push rod 152. The first force can make the first transmission rack 153 and the transmission gear train 160 always in single-sided contact, so as to reduce or prevent the backlash error of the transmission gear train 160 from affecting the transmission between the first transmission rack 153 and the transmission gear train 160, thereby improving the transmission accuracy between the transmission rack and the transmission gear train 160, and thus improving the position accuracy of the push rod 152.

[0110] It should be noted that the actuator 150 has three position states, namely: a retracted state, a semi-expanded state, and a fully expanded state. Thus, in the three different states, the position of the push rod 152 is also different.

[0111] The first state of the actuator 150 is a retracted state of the actuator 150 , the second state of the actuator 150 is a fully deployed state of the actuator 150 , and the third state of the actuator 150 is a semi-deployed state of the actuator 150 .

[0112] Specifically, when the push rod 152 is in the retracted state, it is retracted into the housing 180, and the actuator 150 or the push rod 152 does not start working at this time, so that the door body 120 is in a closed state; then, the actuator 150 or the push rod 152 starts working, and the push rod 152 moves away from the box body 110 under the action of the driving force provided by the driving motor 141, and then the door body 120 is gradually opened, and the push rod 152 is in a semi-expanded state at this time; until the push rod 152 is in a fully expanded state, the push rod 152 has been moved away from the box body 110 to the farthest distance under the action of the driving force, and the push rod 152 is retracted into the housing 180 again under the action of the third elastic member 154. There is no need to drive the push rod 152 to reset without the driving motor 141, which is not only more flexible, more intelligent, and more humane, but also greatly reduces the noise generated by the operation of the device. Afterwards, the user can continue to manually open the first door body 121 to open the first door body 121 to a larger angle.

[0113] [Transmission gear train 160]

[0114] The automatic switch unit may further include a transmission gear train 160, which may be mounted on the housing 180, and the transmission gear train 160 may include at least one first transmission gear 161, and the at least one first transmission gear 161 connects the drive mechanism 140 and the actuator 150. The drive mechanism 140 may transmit the driving force to the actuator 150 through the transmission gear train 160, so that the actuator 150 operates. By providing the transmission gear train 160, the layout flexibility of the drive mechanism 140 and the actuator 150 can be improved, which is conducive to the miniaturization of the automatic switch unit. The transmission gear train 160 can also adjust the parameters such as the speed, torque, and direction of the driving force to meet the requirements of the actuator 150 for the driving force. In addition, the transmission gear train 160 has high transmission efficiency and transmission accuracy, which can reduce the driving power requirements of the drive mechanism 140, thereby reducing the cost of the drive mechanism 140, thereby reducing the cost of the components of the automatic switch unit, and can enhance the stability during transmission.

[0115] Exemplarily, the transmission gear train 160 further includes a second transmission gear 162 meshing with the first transmission rack 153 . The second transmission gear 162 may mesh with the first transmission rack 153 .

[0116] For example Figures 3 to 5 As shown, there may be two first transmission gears 161 , and one of the two first transmission gears 161 may be coaxially disposed with the first worm gear 143 . The other first transmission gear 161 may be coaxially disposed with the second transmission gear 162 and meshed with the first transmission gear 161 .

[0117] For example, when the first worm gear 143 rotates, it can drive the first transmission gear 161 coaxially arranged therewith to rotate, and the first transmission gear 161 drives another first transmission gear 161 to rotate, and drives the second transmission gear 162 to rotate. It can be understood that in different possible implementations of the embodiment of the present application, the number of the first transmission gears 161 can be set according to specific circumstances, and the embodiment of the present application will not be repeated.

[0118] The second transmission gear 162 may be an incomplete gear. When the second transmission gear 162 is meshed with the first transmission rack 153, the driving mechanism 140 may extend the push rod 152 through the second transmission gear 162 to apply a thrust to the first door body 121, thereby opening the first door body 121. When the push rod 152 extends to a preset length, the second transmission gear 162 is separated from the first transmission rack 153, and the push rod 152 may be automatically reset under the action of the third elastic member 154, without the need to perform a reset operation on the push rod 152, thereby improving the convenience of the automatic switch unit when in use.

[0119] For example, Figure 3 and Figure 4 As shown, when the driving motor 141 is in motion, the driving motor 141 can drive the first worm 142 to rotate, the first worm 142 can drive the first worm wheel 143 to rotate clockwise, the first worm wheel 143 drives the first transmission gear 161 coaxially arranged therewith to rotate clockwise, the first transmission gear 161 drives another first transmission gear 161 to rotate counterclockwise, and another first transmission gear 161 drives the second transmission gear 162 to rotate counterclockwise, so that the second transmission gear 162 is meshed with the first transmission rack 153. The driving motor 141 continues to operate, so that the second transmission gear 162 drives the first transmission rack 153 meshed therewith to move along the depth direction x, thereby driving the push rod 152 to move relative to the box body 110 along the depth direction x, so as to apply thrust to the first door body 121, thereby automatically opening the first door body 121.

[0120] like Figure 4 As shown, when the push rod 152 extends to a preset length, the second transmission gear 162 leaves the first transmission rack 153, so that the push rod 152 is separated from the transmission gear train 160. The third elastic member 154 applies a first force opposite to the depth direction x to the push rod 152, so that the push rod 152 is retracted into the housing 180. There is no need to drive the motor 141 to drive the push rod 152 to reset, which not only makes the control more flexible, smarter, and more humane, but also greatly reduces the noise generated by the operation of the device. Afterwards, the user can continue to manually open the first door body 121 to open the first door body 121 to a larger angle.

[0121] [Housing 180]

[0122] The housing 180 includes a first housing 181 and a second housing 182 . The first housing 181 has a cavity, and the cavity is used to accommodate the driving mechanism 140 , the actuator 150 , the transmission gear train 160 and the sensing mechanism 190 .

[0123] The cavity has an opening, and the second shell 182 covers the opening. The second shell 182 defines a connecting groove 1821 , which is communicated with the cavity, and the connecting plate 193 is received in the connecting groove 1821 .

[0124] It should be noted that the housing 180 can be connected to the box 110. For example, when the automatic switch unit is used to open or close the first door 121, the housing 180 can be connected to the top of the box 110. When the automatic switch unit is used to open or close the second door 122, the housing 180 can be connected to the end side wall of the refrigeration compartment. It is understandable that the housing 180 can also be installed at other positions of the box 110, and this embodiment of the present application will not be repeated.

[0125] A cavity may be constructed in the housing 180, and at least part of the driving mechanism 140 and at least part of the actuator 150 may be accommodated and installed in the cavity. By providing the housing 180, at least part of the components of the automatic switch unit may be provided in the housing 180, so as to perform a modular design on the automatic switch unit, thereby improving the convenience of assembling, installing and maintaining the automatic switch unit.

[0126] Exemplarily, the housing 180 may be a split structure, so that at least a portion of the driving mechanism 140 , at least a portion of the actuator 150 , or other components may be installed in the housing 180 .

[0127] It is understandable that in some possible implementations of the present application, the housing 180 may be eliminated, and the components of the automatic switch unit may be connected to the box 110, which will not be described in detail in the present application. The following takes the automatic switch unit as an example to illustrate the technical solution of the present application embodiment.

[0128] [Control circuit unit 200]

[0129] In some related technologies, when the push rod 152 of the automatic switch unit is stuck or the main power supply 210 is cut off, the first transmission rack 153 and the second transmission gear 162 remain in meshing state, resulting in the push rod 152 being unable to retract, that is, the push rod 152 cannot slide relative to the box body 110, and when the push rod 152 fails to reset, the door body 120 cannot be closed, affecting the normal use of the refrigerator 100.

[0130] Therefore, the control circuit unit 200 provided in the embodiment of the present application can realize the expansion or retraction of the push rod 152 by controlling the forward or reverse rotation of the drive motor 141, thereby allowing the refrigerator 100 to be used normally and improving the user experience.

[0131] Specifically, when the main power supply 210 is electrically connected to the drive motor 141, it means that the main power supply 210 is used to power the drive motor 141. At this time, the drive motor 141 rotates along a first direction, for example, the drive motor 141 rotates forward. Driven by the drive motor 141, the push rod 152 moves in a direction away from the box body 110. At this time, the push rod 152 is converted from a retracted state to a semi-expanded state or a fully expanded state.

[0132] When the push rod 152 is in a semi-expanded state, the push rod 152 is already located outside the box body 110, and the main power supply 210 suddenly loses power, or the push rod 152 is stuck, causing the push rod 152 to be unable to retract or expand, to prevent it from being in this position all the time, causing the door body 120 to be unable to close, and then the auxiliary power supply 220 supplies power to the drive motor 141, so that the drive motor 141 rotates in the second direction, for example, the drive motor 141 reverses, and the drive motor 141 reverses to drive the push rod 152 to retract, switching from the semi-expanded state to the retracted state.

[0133] For example, Figure 3 and Figure 4 As shown, when the main power supply 210 supplies power to the driving motor 141, the driving motor 141 rotates forward, and the driving motor 141 can drive the first worm 142 to rotate, and the first worm 142 can drive the first worm wheel 143 to rotate clockwise, and the first worm wheel 143 drives the first transmission gear 161 coaxially arranged therewith to rotate clockwise, and the first transmission gear 161 drives another first transmission gear 161 to rotate counterclockwise, and another first transmission gear 161 drives the second transmission gear 162 to rotate counterclockwise, so that the second transmission gear 162 is meshed with the first transmission rack 153, thereby driving the push rod 152 to move relative to the box body 110 along the depth direction x, so as to apply thrust to the first door body 121, thereby automatically opening the first door body 121.

[0134] The main power supply 210 suddenly loses power, or the push rod 152 is stuck, causing the push rod 152 to be unable to retract or unfold. At this time, the auxiliary power supply 220 supplies power to the drive motor 141. When the drive motor 141 reverses, the drive motor 141 can drive the first worm 142 to rotate, and the first worm 142 can drive the first worm wheel 143 to rotate counterclockwise. The first worm wheel 143 drives the first transmission gear 161 coaxially arranged therewith to rotate counterclockwise, and the first transmission gear 161 drives another first transmission gear 161 to rotate clockwise, and the other first transmission gear 161 drives the second transmission gear 162 to rotate clockwise, thereby driving the push rod 152 to move closer to the box body 110, so that it is retracted into the box body 110, and the first door body 121 can be closed, so that the refrigerator 100 can be used normally, thereby improving the user experience.

[0135] Through the above-mentioned setting, that is, through the setting of the control circuit unit 200, when the push rod 152 fails to reset, the drive motor 141 can be controlled to reverse, so that the push rod 152 can be reset, so that the door body 120 can be closed, thereby ensuring that the refrigerator 100 can operate normally and improving the functional reliability of the refrigerator 100.

[0136] In some optional embodiments, when the main power supply 210 is electrically connected to the drive motor 141, the auxiliary power supply 220 is in a charging state;

[0137] When the main power source 210 is in a power-off state, the auxiliary power source 220 is in a discharging state.

[0138] It should be noted that, in order to ensure the sustainability of the auxiliary power supply 220 replacing the main power supply 210 to supply power to the drive motor 141 when the main power supply 210 is abnormal, the auxiliary power supply 220 is in a charging state when the main power supply 210 is supplying power, which provides continuity for the subsequent discharge work and improves the stability of the control circuit unit 200. When the push rod 152 is extended and has not reached the preset position, the main power supply 210 is powered off or fails, and the auxiliary power supply 220 supplies power to the drive motor 141, causing the push rod 152 to retract.

[0139] In some optional implementations, the auxiliary power source 220 is one of a battery and a capacitor.

[0140] It should be noted that any one of the battery and the capacitor can be the auxiliary power source 220 , and the specific value can be adjusted according to actual conditions.

[0141] In addition, capacitors store electrical energy by accumulating charge in an electric field, which is a physical change process; batteries convert electrical energy into chemical energy for storage, and convert chemical energy back into electrical energy when used, which is a chemical change process. Capacitors charge and discharge very quickly, almost instantly; batteries charge and discharge relatively slowly, taking a long time. Capacitors can store relatively limited energy; batteries can store more energy. Capacitors usually have more total charge and discharge times; batteries have relatively fewer charge and discharge times. Capacitors have a rapidly decreasing voltage when they are discharged; batteries can provide a relatively more stable voltage output.

[0142] In some optional embodiments, the control circuit unit 200 further includes a conduction module 230 and a micro-control module 280, the conduction module 230 includes a first conduction member 231 and a second conduction member 232, the micro-control module 280 is used to send a forward and reverse control signal to the drive motor 141, and the second conduction member 232 collects the forward and reverse control signal;

[0143] When the main power source 210 is electrically connected to the driving motor 141, the first conductive member 231 is in a conductive state, and the driving motor 141, the main power source 210 and the first conductive member 231 form a first conductive path;

[0144] When the auxiliary power source 220 is electrically connected to the driving motor 141 , the second conducting member 232 is in a conducting state, and the driving motor 141 , the auxiliary power source 220 , and the second conducting member 232 form a second conducting path.

[0145] It should be noted that the structures of the first conductive member 231 and the second conductive member 232 can be the same or different. Their purpose is to conduct the first conductive path or the second conductive path so that the drive motor 141 can be powered when the main power supply 210 is normally powered. When the main power supply 210 is powered off, the second conductive member 232 is in the on state and the first conductive member 231 is in the off state. At this time, the auxiliary power supply 220 supplies power to the drive motor 141 to meet its reversal.

[0146] When the main power source VCC is working, the auxiliary power source 220 is always in a charging or standby state, the first conductive element 231 is turned on to cause the second conductive element 232 to enter a cut-off state, and the control signal of the driving motor 141 is controlled by the microcontroller unit 280 (MCU).

[0147] When the main power supply 210VCC is accidentally powered off, the auxiliary power supply 220 replaces the main power supply 210VCC, the first conductive member 231 is cut off due to the power failure of the main power supply 210, and the second conductive member 232 is powered by the auxiliary power supply 220 and turned on. The forward and reverse signals of the drive motor 141 are pulled low to enter the reverse state, and the push rod 152 retracts to the initial state.

[0148] Exemplarily, the second conductive member 232 and the auxiliary power source 220 both have a ground terminal, that is, both are grounded.

[0149] In the embodiment of the present application, the full running time of the push rod 152 is 2 seconds, and the upper limit value of the capacitor C1 in the circuit is approximately equal to the amount of electricity required for the drive motor 141 to run for 2 seconds;

[0150] In addition, when an unexpected power outage occurs, the push rod 152 is often in the middle position and the reset time is less than 2 seconds. After reaching the initial position, the drive motor 141 will enter a stalled state. Therefore, the drive motor 141 needs to use a DC brushed motor that allows stalled operation, or a DC brushless motor with built-in current limiting protection.

[0151] In some optional embodiments, the conduction module 230 further includes a first diode 233 and a second diode 234, one end of the auxiliary power supply 220 is grounded, the first diode 233 is connected between the main power supply 210 and the other end of the auxiliary power supply 220, and the second diode 234 is connected between the main power supply 210 and the first diode 233;

[0152] The first diode 233 and the second diode 234 are located in the first conduction path.

[0153] It should be noted that the first diode 233 and the second diode 234 provide guidance for the connection between the main power supply 210 and the drive motor 141 and provide unidirectional conduction. In addition, they also provide guidance for charging the auxiliary power supply 220.

[0154] In addition, the first diode 233 and the second diode 234 can convert an AC signal into a DC signal, which is called rectification. It can be used to protect other components, for example, as a reverse voltage protection in a circuit to prevent other components from being damaged by excessive reverse voltage. The on-off of the circuit is controlled by controlling the forward and reverse conduction states of the diode.

[0155] In some optional embodiments, the conduction module 230 further includes a third diode 235, the third diode 235 is connected between the auxiliary power supply 220 and the drive motor 141, and the third diode 235 is located in the second conduction path;

[0156] The conduction direction of the third diode 235 is opposite to the conduction direction of the first diode 233 .

[0157] It should be noted that the third diode 235 is used to provide guidance for the connection between the auxiliary power supply 220 and the drive motor 141 and provide unidirectional conduction.

[0158] Specifically, when the main power supply 210VCC is accidentally powered off, the auxiliary power supply 220 replaces the main power supply 210VCC, the first conductive piece 231 is cut off due to the power failure of the main power supply 210, and the second conductive piece 232 is powered by the auxiliary power supply 220 and turned on. At this time, the power supply of the auxiliary power supply 220 is transmitted to the third diode 235 in one direction and then to the drive motor 141 in the other direction, thereby forming a closed loop, energizing the drive motor 141, that is, supplying power to the drive motor 141 to reverse it, and then retracting the push rod 152.

[0159] Exemplarily, the third diode 235 and the first diode 233 are arranged in parallel, the first diode 233 allows the circuit of the main power supply 210 to be conducted to the auxiliary power supply 220 to charge the auxiliary power supply 220, and the third diode 235 allows the current of the auxiliary power supply 220 to be conducted to the drive motor 141.

[0160] Specifically, the conduction direction of the third diode 235 is the discharge direction of the auxiliary power supply 220 , and the conduction direction of the first diode 233 is the charging direction of the auxiliary power supply 220 .

[0161] In some optional embodiments, at least one of the first conductive member 231 and the second conductive member 232 is a triode;

[0162] The emitter of the first conductive element 231 and the emitter of the second conductive element 232 are both grounded, the base of the first conductive element 231 is connected to the main power supply 210, the collector of the first conductive element 231 is connected to the first diode 233, the base of the second conductive element 232 is connected to the third diode 235, and the collector of the second conductive element 232 collects the forward and reverse control signals.

[0163] It should be noted that the first conductive element 231 and the second conductive element 232 may both be NPN transistors.

[0164] The first conductive element 231 and the second conductive element 232 are both turned on when the base receives a high level, and are turned off when the base receives a low level.

[0165] Since the voltages at the bases of the first conductive member 231 and the second conductive member 232 are the same, the first conductive member 231 and the second conductive member 232 are always in a state where one is turned on and the other is turned off. When the level conversion circuit provides a low voltage to the bases of the first conductive member 231 and the second conductive member 232, the first conductive member 231 and the second conductive member 232 are both turned off. When the level conversion circuit provides a high voltage to the bases of the first conductive member 231 and the second conductive member 232, the first conductive member 231 and the second conductive member 232 are turned on.

[0166] Specifically, Figure 7As shown, when the first conductive member 231 is turned on, the collector of the first conductive member 231 is connected to the emitter of the first conductive member 231, and then the collector of the first conductive member 231 is grounded, and then a low voltage is provided to the base of the second conductive member 232. At this time, the second conductive member 232 cannot be turned on. Therefore, when the first conductive member 231 is turned on, the second conductive member 232 cannot be turned on.

[0167] like Figure 8 As shown, correspondingly, when the second conductive member 232 is turned on, the collector of the second conductive member 232 is grounded, and the forward and reverse control signal is pulled low at this time, so that the driving motor 141 enters the reverse state.

[0168] In some optional implementations, the control circuit unit 200 further includes a first resistor 240 , a second resistor 250 , a third resistor 260 , and a fourth resistor 270 ;

[0169] The first resistor 240 is disposed between the base of the first conductive member 231 and the emitter of the first conductive member 231, the second resistor 250 is disposed between the first resistor 240 and the main power supply 210, the third resistor 260 is disposed between the collector of the first conductive member 231 and the base of the second conductive member 232, and the fourth resistor 270 is disposed between the third diode 235 and the third resistor 260;

[0170] The main power supply 210, the drive motor 141, the first conductive member 231, the second resistor 250, the fourth resistor 270, the first diode 233 and the second diode 234 are located in a first conductive path, and the auxiliary power supply 220, the drive motor 141, the second conductive member 232, the third resistor 260, the fourth resistor 270 and the third diode 235 are located in a second conductive path.

[0171] For example, Figure 7 As shown, when the main power supply 210 provides a high level to the first conductive member 231 through the second resistor 250, so that the first conductive member 231 is in a conductive state, the driving motor 141, the second resistor 250, and the first conductive member 231 are connected to the main power supply 210, so that the driving motor 141 rotates forward and pushes the push rod 152 to move in a direction away from the box body 110.

[0172] like Figure 8As shown, the auxiliary power supply 220 provides a high level to the second conductive member 232 through the third resistor 260 and the fourth resistor 270 to put the second conductive member 232 in a conductive state. When the second conductive member 232 is turned on, the collector of the second conductive member 232 is connected to the emitter of the second conductive member 232. Since the emitter of the second conductive member 232 is grounded, the collector of the second conductive member 232 collects the forward and reverse control signal. In other words, the collector of the second conductive member 232 is grounded, and then the forward and reverse control signal is grounded to control the reverse of the drive motor 141 and drive the push rod 152 to move in a direction close to the box body 110.

[0173] In some optional embodiments, the control circuit unit 200 further includes a trigger module, which is disposed between the main power supply 210 and the auxiliary power supply 220, and includes a controller and a detector, and the detector is electrically connected to the controller;

[0174] The detector is used to detect the working status of the main power supply 210. When the detector detects that the main power supply 210 is abnormal, it sends an abnormal signal to the controller. The controller controls the auxiliary power supply 220 to be electrically connected to the drive motor 141 according to the received abnormal signal.

[0175] It should be noted that the setting of the trigger module can better switch the connectivity between the main power supply 210 and the drive motor 141, and the auxiliary power supply 220 and the drive motor 141, so that the push rod 152 can be reset, and then the door body 120 can be closed, and the refrigerator 100 can be used normally, thereby improving the user experience.

[0176] The refrigerator provided in the embodiment of the present application includes: a body; a door body, which is slidably connected to the body; an automatic switch unit, which includes: a driving mechanism, the driving mechanism includes a driving motor, and the driving motor is configured to provide a driving force; an actuator, which is connected to the driving motor; a control circuit unit, which is electrically connected to the driving motor, the control circuit unit includes a main power supply and an auxiliary power supply, and the main power supply and the auxiliary power supply are electrically connected to the driving motor; when the main power supply is electrically connected to the driving motor, the driving motor rotates in a first direction so that the actuator moves away from the body under the action of the driving force; when the actuator is in a third state, when the auxiliary power supply is electrically connected to the driving motor, the driving motor rotates in a second direction so that the actuator moves closer to the body under the action of the driving force; wherein the first direction and the second direction are opposite.

[0177] By setting the control circuit unit, when the push rod fails to reset, the drive motor can be controlled to reverse, so that the push rod can be reset and the door can be closed, thereby ensuring the normal operation of the refrigerator and improving the functional reliability of the refrigerator.

[0178] In addition, if Figures 1 to 8As shown, the embodiment of the present application further provides a refrigerator 100, comprising:

[0179] Box 110;

[0180] The door body 120 is slidably connected to the box body 110;

[0181] An automatic switching unit comprising:

[0182] A driving mechanism 140, wherein the driving mechanism 140 includes a driving motor 141, and the driving motor 141 is configured to provide a driving force;

[0183] Actuator 150;

[0184] The control circuit unit 200 is electrically connected to the drive motor 141. The control circuit unit 200 is configured to control the drive motor 141 to rotate forward so that the actuator 150 moves away from the box body 110 under the action of the driving force; when the actuator is in the third state, the drive motor 141 is controlled to rotate reversely so that the actuator 150 moves closer to the box body 110 under the action of the driving force.

[0185] The refrigerator provided in the embodiment of the present application, through the setting of the control circuit unit, can control the driving motor to reverse when a reset failure occurs in the push rod, so that the push rod can be reset so that the door body can be closed, thereby ensuring the normal operation of the refrigerator and improving the functional reliability of the refrigerator.

[0186] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships 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 referred device or element 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.

[0187] In addition, 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0188] 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.

Claims

1. A refrigerator, characterized in that: include: Box; A door body, slidably connected to the box body; Automatic switch unit, comprising: a driving mechanism, the driving mechanism comprising a driving motor, the driving motor being configured to provide a driving force; An actuator connected to the drive motor; A control circuit unit, the control circuit unit comprising a main power supply and an auxiliary power supply, wherein one of the main power supply and the auxiliary power supply is electrically connected to the drive motor; When the main power supply is electrically connected to the drive motor, the drive motor rotates in a first direction so that the actuator moves away from the box under the action of the drive force; When the actuator is in the third state, when the auxiliary power supply is electrically connected to the drive motor, the drive motor rotates in the second direction, so that the actuator moves closer to the box under the action of the driving force; The first direction and the second direction are opposite.

2. The refrigerator according to claim 1, characterized in that: When the main power supply is electrically connected to the drive motor, the auxiliary power supply is in a charging state; When the main power supply is in a power-off state, the auxiliary power supply is in a discharging state.

3. The refrigerator according to claim 2, characterized in that: The auxiliary power source is one of a battery and a capacitor.

4. The refrigerator according to any one of claims 1 to 3, characterized in that: The control circuit unit further includes a conduction module and a micro-control module, the conduction module includes a first conduction member and a second conduction member, the micro-control module is used to send a forward and reverse control signal to the drive motor, and the second conduction member collects the forward and reverse control signal; When the main power supply is electrically connected to the drive motor, the first conductive member is in a conductive state, and the drive motor, the main power supply and the first conductive member form a first conductive path; When the auxiliary power supply is electrically connected to the drive motor, the second conductive member is in a conductive state, and the drive motor, the auxiliary power supply and the second conductive member form a second conductive path.

5. The refrigerator according to claim 4, characterized in that: The conduction module further includes a first diode and a second diode, one end of the auxiliary power supply is grounded, the first diode is connected between the main power supply and the other end of the auxiliary power supply, and the second diode is connected between the main power supply and the first diode; The first diode and the second diode are located in the first conduction path.

6. The refrigerator according to claim 5, characterized in that: The conduction module further includes a third diode, the third diode is connected between the auxiliary power supply and the drive motor, and the third diode is located in the second conduction path; The conduction direction of the third diode is opposite to the conduction direction of the first diode.

7. The refrigerator according to claim 6, characterized in that: At least one of the first conductive member and the second conductive member is a triode; The emitter of the first conductive element and the emitter of the second conductive element are both grounded, the base of the first conductive element is connected to the main power supply, the collector of the first conductive element is connected to the first diode, the base of the second conductive element is connected to the third diode, and the collector of the second conductive element collects the forward and reverse control signal.

8. The refrigerator according to claim 7, characterized in that: The control circuit unit further includes a first resistor, a second resistor, a third resistor and a fourth resistor; The first resistor is arranged between the base of the first conductive element and the emitter of the first conductive element, the second resistor is arranged between the first resistor and the main power supply, the third resistor is arranged between the collector of the first conductive element and the base of the second conductive element, and the fourth resistor is arranged between the third diode and the third resistor; The main power supply, the drive motor, the first conductive member, the second resistor and the fourth resistor are located in the first conductive path, and the auxiliary power supply, the drive motor, the second conductive member, the third resistor and the fourth resistor are located in the second conductive path.

9. The refrigerator according to any one of claims 1 to 3, characterized in that: The control circuit unit further includes a trigger module, the trigger module includes a controller and a detector, and the detector is electrically connected to the controller; The detector is used to detect the working state of the main power supply. When the detector detects that the main power supply is abnormal, it sends an abnormal signal to the controller. The controller controls the auxiliary power supply to be electrically connected to the drive motor according to the received abnormal signal.

10. A refrigerator, characterized in that: include: Box; A door body, slidably connected to the box body; Automatic switch unit, comprising: a driving mechanism, the driving mechanism comprising a driving motor, the driving motor being configured to provide a driving force; Executive body; A control circuit unit is electrically connected to the drive motor, and is configured to control the drive motor to rotate forward so that the actuator moves away from the box under the action of the driving force; when the actuator is in the third state, control the drive motor to rotate reversely so that the actuator moves closer to the box under the action of the driving force.

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