Refrigerator

Abstract

The embodiment of the utility model provides a refrigerator, and belongs to the technical field of household appliances. The refrigerator comprises a refrigerator body. A door body; the automatic door opening and closing device comprises a driving mechanism; an execution mechanism; the clutch mechanism comprises a first clutch gear and a second clutch gear which are coaxially arranged and can rotate relatively; a second connecting concave part is arranged on the side, facing the first clutch gear, of the second clutch gear. The first clutch gear or the second clutch gear is provided with a second sliding through hole in the radial direction of the first clutch gear or the second clutch gear. The sliding key is connected with the first clutch gear in a sliding mode, the sliding key is provided with a pushing protruding part, and the pushing protruding part is arranged in the second sliding through hole in a penetrating mode; a pushing rod of the electromagnet abuts against the part, extending out of the second sliding through hole, of the pushing protruding part; and the third elastic piece is connected with the sliding key and is configured to apply a third acting force to the sliding key, and the direction of the third acting force is opposite to the extending direction of the push rod. According to the refrigerator, the connecting or disconnecting time of the driving mechanism and the executing mechanism can be controlled at will.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of household appliance technology, and in particular, to a refrigerator. Background Art

[0002] At present, in order to improve the convenience when opening and closing the door body, the refrigerator is usually provided with an automatic door opening and closing device for automatically opening or closing the door body of the refrigerator.

[0003] In the related art, the automatic door opening and closing device generally includes a driving mechanism, an actuator and a clutch mechanism. The clutch mechanism includes a first clutch gear and a second clutch gear that are abutted and coaxially arranged, the first clutch gear is connected to the driving mechanism, and the second clutch gear is connected to the actuator. When the door body is automatically opened or closed, the driving mechanism drives the first clutch gear to rotate, and there is friction between the first clutch gear and the second clutch gear. The first clutch gear can drive the second clutch gear to rotate, thereby driving the actuator to operate. When the door body encounters an obstacle and generates a large reverse torque, the reverse torque makes the first force between the first clutch gear and the second clutch gear greater than the static friction force, the first clutch gear and the second clutch gear rotate relative to each other, so that the driving mechanism is disconnected from the actuator, and the automatic opening or closing of the door body is stopped.

[0004] However, the clutch mechanism in the related art cannot arbitrarily control the timing of connection or disconnection between the driving mechanism and the actuator, which limits the functions of the automatic door opening and closing device and reduces the user experience. Utility Model Content

[0005] The embodiment of the present application provides a refrigerator that can solve the technical problem that the clutch mechanism in the related art cannot arbitrarily control the timing of connection or disconnection between the driving mechanism and the actuator, so that the functions of the automatic door opening and closing device are limited and the user experience is reduced.

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

[0007] A box body, which is constructed with a refrigeration compartment;

[0008] A door body, connected to the box body, used to open or close the refrigeration compartment;

[0009] An automatic door opening and closing device, comprising:

[0010] a drive mechanism configured to provide a driving force;

[0011] an actuator, which is configured to open or close the door body under the action of the driving force;

[0012] The clutch mechanism comprises:

[0013] A first clutch gear and a second clutch gear are coaxially arranged and relatively rotatable, one of which is transmission-connected to the driving mechanism, and the other is transmission-connected to the actuator; a second connection recess is provided on a side of the second clutch gear facing the first clutch gear; and the first clutch gear or the second clutch gear is provided with a second sliding through hole along its radial direction;

[0014] A sliding key, which is slidably connected with the first clutch gear in a radial direction, and the sliding key is provided with a pushing protrusion, and the pushing protrusion is penetrated in the second sliding through hole and extends out of the second sliding through hole;

[0015] an electromagnet having a retractable push rod, wherein the push rod abuts against a portion of the push protrusion extending out of the second sliding through hole;

[0016] a third elastic member connected to the sliding key and configured to apply a third force to the sliding key, wherein the direction of the third force is opposite to the extending direction of the push rod;

[0017] Wherein, when the clutch mechanism is in the first state, the push rod extends, and the push rod pushes the push protrusion to slide in the second sliding through hole, so that the sliding key abuts against or separates from the circumferential side wall of the second connecting recess; when the clutch mechanism is in the second state, the push rod retracts, and under the action of the third force, the push protrusion slides in the second sliding through hole in the opposite direction, so that the sliding key separates from or abuts against the circumferential side wall of the second connecting recess.

[0018] The refrigerator of the embodiment of the present application is provided with a sliding key, an electromagnet and a third elastic member, and the sliding key is slidably connected with the first clutch gear. The electromagnet abuts against the sliding key to push the sliding key to slide relative to the first clutch gear, so that the sliding key abuts or separates from the circumferential side wall of the second connection recess, thereby connecting or disconnecting the sliding key from the second clutch gear. The third elastic member is connected to the sliding key and applies a third force to the sliding key, so that the sliding key slides in the opposite direction relative to the first clutch gear, so that the sliding key separates or abuts from the circumferential side wall of the second connection recess, thereby disconnecting or connecting the sliding key from the second clutch gear. When the clutch mechanism is in the first state, the electromagnet pushes the sliding key to connect or disconnect with the second clutch gear. When the clutch mechanism is in the second state, the third elastic member pushes the sliding key to automatically separate or connect with the second clutch gear. The state of the clutch mechanism can be switched by controlling the electromagnet, so that the timing of connecting or disconnecting the driving mechanism and the actuator can be arbitrarily controlled, which is conducive to increasing the function of the automatic door opening and closing device and improving the user experience.

[0019] In addition, the embodiment of the present application drives the sliding key to slide through an electromagnet, and the cost of the electromagnet is relatively low, thereby reducing the parts cost of the clutch mechanism; and there is no need to set a transmission part in the clutch assembly to drive the sliding key to slide, thereby reducing the number of parts in the clutch mechanism, simplifying the mechanical structure of the clutch mechanism, and reducing the difficulty of assembling the clutch mechanism.

[0020] In some embodiments of the present application, the clutch mechanism also includes a first pushing member, which is connected to the pushing rod, and the first pushing member is provided with a first pushing surface abutting the pushing protrusion, and the first pushing surface is a first circular arc surface, and the center of the first circular arc surface is located on the axis of the first clutch gear.

[0021] With such a configuration, when the driving mechanism drives the second clutch gear, the sliding key and the first clutch gear to rotate synchronously, since the first pushing surface is the first arc surface, the pushing protrusion of the sliding key can slide along the first arc surface, which can prevent the first pushing member and the electromagnet from affecting the rotation of the second clutch gear, the sliding key and the first clutch gear. In addition, the first arc surface can also limit and guide the pushing protrusion to improve the relative position accuracy between the sliding key and the first clutch gear, thereby improving the functional reliability of the clutch mechanism.

[0022] In some embodiments of the present application, the central angle of the first arc surface is less than or equal to 180°.

[0023] In this way, the central angle of the first arc surface is set to be less than or equal to 180°, and when the clutch mechanism is switched to the engaged state, the clutch mechanism can be kept in the engaged state, thereby improving the functional reliability of the clutch mechanism.

[0024] In some embodiments of the present application, the first pushing member includes a second connecting plate and a third connecting plate, the second connecting plate is perpendicular to the push rod and connected to the push rod; the third connecting plate is perpendicular to the second connecting plate, the third connecting plate has a first end and a second end opposite to each other, the first end of the third connecting plate is connected to the second connecting plate, and the second end of the third connecting plate is provided with the first pushing surface.

[0025] In this way, the first pusher is connected to the push rod of the electromagnet through the third connecting plate, and there is a large contact area between the third connecting plate and the push rod, which improves the connection strength between the first pusher and the push rod. In addition, the distance between the electromagnet and the clutch assembly can be adjusted by adjusting the length of the second connecting plate, which is conducive to optimizing the structural layout of the clutch mechanism.

[0026] In some embodiments of the present application, a snap-in recess is provided on the side of the second connecting plate facing away from the third connecting plate, and the snap-in recess has a snap-in opening facing the push rod; along a direction parallel to the third connecting plate, the width of the snap-in opening is smaller than the maximum width of the snap-in recess and smaller than the width of the push rod.

[0027] With such arrangement, since the width of the snap-fit ​​opening is smaller than the width of the push rod, the portions of the second connecting plate located on both sides of the snap-fit ​​opening can limit and fix the push rod to prevent the push rod from escaping from the snap-fit ​​recess, thereby improving the connection reliability between the first push member and the push rod.

[0028] In some embodiments of the present application, a fourth sliding recess is provided on the side of the first clutch gear facing the second clutch gear, and the fourth sliding recess is provided along the radial direction of the first clutch gear; a portion of the sliding key is slidably disposed in the fourth sliding recess.

[0029] With such arrangement, the fourth sliding recessed portion can guide and limit the sliding key, so as to improve the sliding stability and position accuracy of the sliding key, thereby improving the functional reliability of the clutch mechanism.

[0030] In some embodiments of the present application, a fifth sliding recess is further provided on the side of the first clutch gear facing the second clutch gear, the fifth sliding recess is arranged along the radial direction of the first clutch gear, and is respectively arranged on both sides of the axis of the first clutch gear with the fourth sliding recess, and the second sliding through hole is provided on the bottom side of the fifth sliding recess; part of the sliding key is slidably disposed in the fifth sliding recess; and the pushing protrusion is connected to the sliding key located in the fifth sliding recess.

[0031] With such arrangement, the fifth sliding recessed portion can guide and limit the second sliding portion, so as to improve the sliding stability and position accuracy of the sliding key, thereby improving the functional reliability of the clutch mechanism.

[0032] In some embodiments of the present application, the sliding key includes a first sliding portion, a first connecting portion, a second sliding portion and a second connecting portion, the first sliding portion is slidably disposed in the fourth sliding recess; the first connecting portion is connected to the first sliding portion, and is used to abut or separate from the circumferential side wall of the second connecting recess; the second sliding portion is slidably disposed in the fifth sliding recess, and the second sliding portion is connected to the pushing protrusion; the second connecting portion is located on the side of the first clutch gear facing the second clutch gear, and connects the first sliding portion and the first connecting portion.

[0033] Such an arrangement enables the sliding key to be slidably connected to the first clutch gear on both sides of the axis thereof, thereby improving the stability of the sliding key when sliding relative to the first clutch gear.

[0034] In some embodiments of the present application, the fifth sliding recess includes a third side wall and a fourth side wall that are arranged opposite to each other in the radial direction of the first clutch gear, and the third side wall is closer to the axis of the first clutch gear than the fourth side wall; the third elastic member is a third compression spring, and the third compression spring is located in the fifth sliding recess, one end of the third compression spring abuts against the third side wall, and the other end of the third compression spring abuts against the second sliding portion.

[0035] With such arrangement, the fifth sliding recessed portion can guide and limit the second sliding portion, so as to improve the sliding stability and position accuracy of the sliding key, thereby improving the functional reliability of the clutch mechanism.

[0036] In a second aspect, an embodiment of the present application provides a refrigerator, comprising:

[0037] A box body, which is constructed with a refrigeration compartment;

[0038] A door body, connected to the box body, used to open or close the refrigeration compartment;

[0039] An automatic door opening and closing device, comprising:

[0040] a drive mechanism configured to provide a driving force;

[0041] an actuator, which is configured to open or close the door body under the action of the driving force;

[0042] The clutch mechanism comprises:

[0043] A first clutch gear and a second clutch gear are coaxially arranged and relatively rotatable, one of which is transmission-connected to the driving mechanism, and the other is transmission-connected to the actuator; a second connection recess is provided on a side of the second clutch gear facing the first clutch gear; and the first clutch gear or the second clutch gear is provided with a second sliding through hole along its radial direction;

[0044] a sliding key, which is slidably connected to the first clutch gear, the sliding key being provided with a pushing protrusion, the pushing protrusion being penetrated in the second sliding through hole and extending out of the second sliding through hole;

[0045] an electromagnet abutting against a portion of the pushing protrusion extending out of the second sliding through hole to push the pushing protrusion so that the sliding key abuts against or separates from a circumferential side wall of the second connecting recess;

[0046] A third elastic member is connected to the sliding key and is configured to apply a third force to the sliding key so that the sliding key is separated from or abuts against the circumferential side wall of the second connecting recessed portion.

[0047] The refrigerator of the embodiment of the present application is provided with a sliding key, an electromagnet and a third elastic member, and the sliding key is slidably connected with the first clutch gear. The electromagnet abuts against the sliding key to push the sliding key to connect or separate with the second clutch gear. The third elastic member is connected to the sliding key to apply a third force to the sliding key so that the sliding key is separated from or connected with the second clutch gear. The state of the clutch mechanism can be switched by controlling the electromagnet, so that the timing of connecting or disconnecting the driving mechanism and the actuator can be arbitrarily controlled, which is conducive to increasing the function of the automatic door opening and closing device and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] 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.

[0049] Figure 1 This is a schematic diagram of the structure of a refrigerator according to an embodiment of the present application;

[0050] Figure 2 This is a schematic diagram of the connection structure between the door body and the box body in some possible implementations of the embodiments of the present application;

[0051] Figure 3 Schematic diagram of the connection structure between the door body and the box body in some other possible implementations of the embodiment of the present application;

[0052] Figure 4 Schematic diagram of a partial structure of a refrigerator in some other possible implementations of the embodiments of the present application;

[0053] Figure 5 This is a schematic diagram of the structure of an automatic door opening and closing device in some possible implementations of the embodiments of the present application;

[0054] Figure 6 for Figure 5 Schematic diagram of the explosion structure of the automatic door opening and closing device;

[0055] Figure 7 for Figure 5 A schematic top view of the automatic door opening and closing device with the second housing hidden and the push rod extended;

[0056] Figure 8 for Figure 7 A top view of the middle push rod when it is reset;

[0057] Fig. 9 It is a schematic diagram of the structure of the automatic door opening and closing device in some other possible implementations of the embodiments of the present application;

[0058] Fig.10 for Fig. 9 Schematic diagram of the explosion structure of the automatic door opening and closing device;

[0059] Fig.11 for Fig. 9 A schematic top view of the automatic door opening and closing device when the second housing is hidden and the door is closed;

[0060] Fig.12 for Fig.11 Schematic diagram of the top view when the door is opened;

[0061] Fig.13 It is a top view schematic diagram of the automatic door opening and closing device hiding the second shell in some other possible implementation methods of the embodiment of the present application;

[0062] Fig.14 for Fig.13 Schematic diagram of the first actuator opening the door body;

[0063] Fig.15 for Fig.13 Schematic diagram of the second actuator opening the door body;

[0064] Fig.16 for Fig.13 Schematic diagram of the second actuator closing the door body;

[0065] Fig.17 for Figure 4 A partial enlarged schematic diagram of point E in the middle;

[0066] Fig.18 It is a schematic diagram of the structure of the clutch mechanism in some possible implementation methods of the embodiments of the present application;

[0067] Fig.19 for Fig.18 Schematic diagram of the explosion structure of the clutch mechanism;

[0068] Fig. 20 for Fig.18 A schematic diagram of the front view of the clutch mechanism;

[0069] Fig.21 for Fig. 20 Schematic diagram of the cross-sectional structure in the middle FF direction;

[0070] Fig. 22 for Fig.18 A schematic diagram of the structure of the first clutch gear;

[0071] Fig.23 for Fig.18 A schematic diagram of the structure of the second clutch gear;

[0072] Fig.24 for Fig.18 A schematic diagram of the first-person perspective structure of the middle sliding key;

[0073] Fig.25 for Fig.18 Schematic diagram of the second perspective structure of the middle sliding key;

[0074] Fig.26 for Fig. 20 Schematic diagram of the cross-sectional structure along the GG direction;

[0075] Fig. 27 for Fig.26 A schematic diagram of the clutch mechanism in a disengaged state;

[0076] Fig.28 Schematic diagram of the exploded structure of the clutch assembly in some possible implementations of the embodiments of the present application;

[0077] Fig.29 for Fig.28 A schematic diagram of the structure of the first clutch gear;

[0078] Fig.30 for Fig.29 A schematic diagram of the structure of the second clutch gear;

[0079] Fig.31 for Fig.29 Schematic diagram of the third-view structure of the middle sliding key;

[0080] Fig.32 for Fig.29 Schematic diagram of the fourth perspective structure of the middle slide key;

[0081] Fig.33 Schematic diagram of the clutch mechanism switching to the engaged state and the first connecting portion not being inserted into the first accommodating recessed portion in some possible implementations of the embodiments of the present application;

[0082] Fig.34 Schematic diagram of the connection between the sliding key and the circumferential side wall of the second connecting recessed portion in some possible implementations of the embodiments of the present application;

[0083] Fig.35 for Fig.34 A partial enlarged schematic diagram of the J in the middle;

[0084] Fig.36 Schematic diagram of connection between the sliding key and the circumferential side wall of the second connection recess in some other possible implementations of the embodiments of the present application;

[0085] Fig.37for Fig.36 A bottom view schematic diagram of the middle sliding key being separated from the circumferential side wall of the second connecting recess and hiding the first clutch gear;

[0086] Fig.38 for Fig.36 A bottom view schematic diagram of the middle sliding key abutting against the circumferential side wall of the second connecting recessed portion and hiding the first clutch gear;

[0087] Fig.39 for Fig.38 A partial enlarged schematic diagram of the L in the middle;

[0088] Fig.40 Schematic diagram of the structure of the second clutch gear in some other possible implementations of the embodiment of the present application;

[0089] Fig.41 Schematic diagram of the structure of the sliding key in some other possible implementations of the embodiments of the present application;

[0090] Fig.42 Schematic diagram of a clutch mechanism in a disengaged state in some other possible implementations of the embodiment of the present application;

[0091] Fig.43 for Fig.42 A partial enlarged schematic diagram of the M in the middle;

[0092] Fig.44 Schematic diagram of a clutch mechanism in a first engagement state in some other possible implementations of the embodiment of the present application;

[0093] Fig.45 for Fig.44 A local enlarged schematic diagram of the P in the middle;

[0094] Fig.46 It is a schematic diagram of a clutch mechanism in a second engagement state in some other possible implementations of the embodiment of the present application;

[0095] Fig.47 for Fig.46 A partial enlarged schematic diagram of the middle Q;

[0096] Fig.48 for Fig.19 A schematic diagram of the structure of the middle transmission member from the fifth perspective;

[0097] Fig.49 for Fig.19 A schematic diagram of the structure of the middle transmission member from the fifth perspective;

[0098] Fig.50 for Fig.49 A schematic diagram of the structure of the middle transmission member viewed from above;

[0099] Fig.51It is a bottom view structural schematic diagram of the transmission member in some possible implementation methods of the embodiments of the present application;

[0100] Fig.52 Schematic diagram of the exploded structure of the automatic door opening and closing device in some other possible implementations of the embodiments of the present application;

[0101] Fig.53 It is a schematic diagram of a top view of the structure when the automatic door opening and closing device hides the second shell in some other possible implementation methods of the embodiment of the present application;

[0102] Fig.54 for Fig.53 A schematic diagram of the structure of the clutch mechanism;

[0103] Fig.55 for Fig.54 Schematic diagram of the explosion structure of the clutch mechanism;

[0104] Fig.56 for Fig.54 A schematic diagram of the front view of the clutch mechanism;

[0105] Fig.57 for Fig.56 Schematic diagram of the cross-sectional structure in the RR direction;

[0106] Fig.58 for Fig.54 A schematic structural diagram of the first pusher;

[0107] Fig.59 for Fig.54 A schematic diagram of the positions of the first pushing member, the first clutch gear and the pushing protrusion;

[0108] Fig.60 for Fig.53 A schematic diagram of the clutch mechanism in a disengaged state;

[0109] Fig.61 for Fig.60 A partial cross-sectional view of the clutch mechanism;

[0110] Fig.62 for Fig.53 A schematic diagram of the clutch mechanism in an engaged state;

[0111] Fig.63 for Fig.62 A partial cross-sectional view of the middle clutch mechanism;

[0112] Fig.64 It is a top view schematic diagram of the automatic door opening and closing device hiding the second shell in some other possible implementation methods of the embodiment of the present application;

[0113] Fig.65 for Fig.64Structural schematic diagram of the clutch mechanism;

[0114] Fig.66 for Fig.64 Schematic diagram of the cross-sectional structure along the TT direction;

[0115] Fig.67 for Fig.66 Schematic diagram of the clutch mechanism in the fourth state.

[0116] Reference numerals:

[0117] 100- cabinet;

[0118] 110-refrigeration compartment; 111-rear side wall;

[0119] 112-end side wall; 120-box liner;

[0120] 200-first door;

[0121] 210-hinge; 211-first connecting plate;

[0122] 212-hinge axis; 220-first rotation recess;

[0123] 230-first sliding recessed portion; 240-third sliding recessed portion; 300-second door body;

[0124] 310-guide rail pair; 311-fixed guide rail;

[0125] 312-sliding rail; 320-drawer;

[0126] 400-Automatic door opening and closing device;

[0127] 500-housing;

[0128] 510-first housing; 511-first sub-accommodating chamber;

[0129] 512-first bottom plate; 513-first side plate;

[0130] 514-sliding protrusion; 515-second sliding recess;

[0131] 520 - second housing; 521 - second sub-accommodating chamber;

[0132] 522-second bottom plate; 523-second side plate;

[0133] 524-first connecting through hole; 525-third connecting through hole;

[0134] 526-direction mark; 530-first sliding through hole;

[0135] 531-first groove; 532-second groove; 600-driving mechanism;

[0136] 610-driving motor; 620-first worm;

[0137] 630-first worm gear; 631-first rotating shaft;

[0138] 640-first mounting seat;

[0139] 700-transmission gear train;

[0140] 710-first transmission gear; 720-first output gear; 800-actuator;

[0141] 810-first actuator; 811-push rod;

[0142] 812-first transmission rack; 813-first elastic member;

[0143] 820-second actuator; 821-rocker;

[0144] 822-second rotating shaft; 823-square columnar structure;

[0145] 824-first connecting recess; 825-second transmission tooth;

[0146] 826-sliding column; 830-third actuator;

[0147] 831-second transmission rack;

[0148] 900-clutch mechanism;

[0149] 910-clutch assembly; 911-first clutch gear;

[0150] 9111-first mounting hole; 9112-fourth sliding recess;

[0151] 9113-fifth sliding recessed portion; 9114-first guide portion;

[0152] 9115-first guide surface; 9116-second guide portion;

[0153] 9117-second guide surface; 9118-second sliding through hole;

[0154] 912-second clutch gear; 9121-second mounting hole;

[0155] 9122- second connection recess; 9123- first accommodation recess;

[0156] 9124-first accommodating group; 9125-third transmission tooth;

[0157] 9126-first ratchet tooth; 9127-second ratchet tooth;

[0158] 913-sliding key; 9131-first sliding part;

[0159] 9132-first connecting portion; 9133-second sliding portion;

[0160] 9134-second connecting portion; 9135-avoidance through hole;

[0161] 9136 - second accommodating recess; 9137 - fourth transmission tooth;

[0162] 9138- pawl; 9139- guide protrusion;

[0163] 914-third rotating shaft; 915-second elastic member;

[0164] 920-clutch drive assembly; 921-first clutch motor;

[0165] 922-transmission member; 9221-third connecting portion;

[0166] 9222-transmission plate; 9223-second connecting through hole;

[0167] 9224-guide recess; 9225-fifth side wall;

[0168] 9226 - sixth side wall; 9227 - abutting recessed portion;

[0169] 923-first clutch drive gear; 924-second clutch drive gear;

[0170] 9241-fifth transmission gear; 925-third clutch drive gear;

[0171] 9251-adjustment shaft; 9252-adjustment knob;

[0172] 9253-rotating protrusion; 926-second worm;

[0173] 927-second worm gear; 928-third transmission rack;

[0174] 9281-sixth transmission tooth; 9282-seventh transmission tooth;

[0175] 930-pushing protrusion; 931-third elastic member;

[0176] 932-electromagnet; 9321-push rod;

[0177] 933-first pusher; 9331-second connecting plate;

[0178] 9332-third connecting plate; 9333-first pushing surface;

[0179] 9334- snap-fit ​​recess; 9335- snap-fit ​​opening;

[0180] 940-first clutch assembly; 950-second clutch assembly;

[0181] 960-second pushing member; 961-first action part;

[0182] 9611-first action recess; 9612-second push surface;

[0183] 9613-first limiting recessed portion; 962-second action portion;

[0184] 9621- second action recessed portion; 9622- third pushing surface;

[0185] 9623 - second limiting recess; 963 - abutment portion;

[0186] 964-propelling body; 965-fourth connecting part;

[0187] 966-fifth connecting portion; 967-first reinforcing plate;

[0188] 968-second reinforcement plate; 970-second clutch motor;

[0189] 971-Clutch cam. DETAILED DESCRIPTION

[0190] 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.

[0191] 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 common and usual meanings.

[0192] 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.

[0193] 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.

[0194] The terms "first", "second" and the like are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined with "first", "second" and the like 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.

[0195] 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.

[0196] With regard to refrigerators in the related art, there is a technical problem that the clutch mechanism cannot arbitrarily control the timing of connecting or disconnecting the driving mechanism and the actuator, which limits the functions of the automatic door opening and closing device and reduces the user experience. The embodiment of the present application provides a refrigerator, in which a sliding key, an electromagnet and a third elastic member are provided, and the sliding key is slidably connected to the first clutch gear. The electromagnet abuts against the sliding key to push the sliding key to connect or disconnect with the second clutch gear. The third elastic member is connected to the sliding key to apply a third force to the sliding key so that the sliding key is separated or connected with the second clutch gear. The state of the clutch mechanism can be switched by controlling the electromagnet, so that the timing of connecting or disconnecting the driving mechanism and the actuator can be arbitrarily controlled, which is conducive to increasing the function of the automatic door opening and closing device and improving the user experience.

[0197] 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.

[0198] refer to Figure 1 , the refrigerator of the embodiment of the present application may include a box body 100 and a door body. The box body 100 may be configured with a refrigeration compartment 110. The refrigeration compartment 110 has an opening for storing items such as food. The number of refrigeration compartments 110 may be one or more. When the number of refrigeration compartments 110 is multiple, the multiple refrigeration compartments 110 may be divided into a cold storage room, a freezer room, or a temperature-changing room, etc. Exemplarily, the box body 100 may include a box shell 500 and a box liner 120, and the box shell 500 is used to define the outer boundary of the refrigerator. The box liner 120 may be arranged in the box shell 500 and connected to the box shell 500. The box liner 120 may be recessed inwardly to form the refrigeration compartment 110. An insulation layer may be filled between the box shell 500 and the box liner 120, and the insulation layer can keep the refrigeration compartment 110 warm, thereby reducing the energy consumption of the refrigerator.

[0199] The door body can be connected to the box body 100 and is used to open or close the refrigeration compartment 110. One door body can be correspondingly provided for the same refrigeration compartment 110. Alternatively, two door bodies can also be correspondingly provided for the same refrigeration compartment 110.

[0200] In some possible implementations of the present application, the door body may be a first door body 200, and the first door body 200 may be connected to the cabinet 100 and rotated about the height direction of the cabinet 100. The first door body 200 may be pulled or pushed so that the first door body 200 rotates relative to the cabinet 100 to open or close the refrigeration compartment 110. It should be noted that the height direction of the cabinet 100 refers to the height direction of the cabinet 100 when the refrigerator is in normal use, for example Figure 1 The vertical direction y shown in FIG. 1 is shown in FIG.

[0201] For example, the first door body 200 may be rotatably connected to the box body 100 via a hinge 210. Figure 2 As shown, the hinge 210 may be a uniaxial hinge 210. The uniaxial hinge 210 may include a first connecting plate 211 and a hinge shaft 212 connected to the first connecting plate 211. The first connecting plate 211 may be connected to the top of the cabinet 100. A first rotation recess 220 may be provided at the top of the first door body 200. The hinge shaft 212 may be inserted into the first rotation recess 220 and may rotate in the first rotation recess 220. When a pulling force or a pushing force is applied to the first door body 200, the first rotation recess 220 may rotate relative to the hinge shaft 212, so that the first door body 200 rotates relative to the cabinet 100, thereby opening or closing the refrigeration compartment 110.

[0202] like Figure 3As shown, the hinge 210 may also be a double-axis hinge 210. The difference between the double-axis hinge 210 and the single-axis hinge 210 is that the number of hinge shafts 212 may be two. The top of the first door body 200 may be provided with two first sliding recesses 230 with different extension trajectories. The two hinge shafts 212 are respectively slidably disposed in the two first sliding recesses 230. When a pulling force or a pushing force is applied to the first door body 200, one of the hinge shafts 212 slides in one of the first sliding recesses 230, and the other hinge shaft 212 slides in the other first sliding recess 230, so that the first door body 200 can rotate relative to the cabinet 100, thereby opening or closing the refrigeration compartment 110. During the process of opening or closing the first door body 200, due to the interaction between the two hinge shafts 212 and the two first sliding recesses 230, the rotation axis between the first door body 200 and the box body 100 will change, so that the side of the first door body 200 will not exceed the side of the box body 100. When the refrigerator is embedded in a wall or a cabinet, the first door body 200 can be prevented from interfering with the wall or the cabinet.

[0203] Exemplarily, the hinge 210 may also be a three-axis or more multi-axis hinge 210, that is, the multi-axis hinge 210 may include three or more hinge axes 212. For the relevant content of the multi-axis hinge 210, reference may be made to the above description of the biaxial hinge 210, which will not be repeated in the present embodiment.

[0204] In some other possible implementations of the present application, Figure 4 As shown, the door body may be a second door body 300, and the second door body 300 may be slidably connected to the cabinet 100 along the depth direction of the cabinet 100. The second door body 300 may be pulled or pushed so that the second door body 300 slides relative to the cabinet 100 to open or close the refrigeration compartment 110. It should be noted that the depth direction of the cabinet 100 refers to the direction in which the rear side wall 111 of the refrigeration compartment 110 points to the opening when the refrigerator is in normal use, for example Figure 4 The horizontal direction x is shown in FIG. 1. Hereinafter, the depth direction of the housing 100 is referred to as the depth direction x.

[0205] Exemplarily, the second door body 300 can be slidably connected to the box body 100 through a guide rail pair 310. The guide rail pair 310 can include a fixed guide rail 311 and a sliding guide rail 312, and the fixed guide rail 311 can be fixedly connected to the end side wall 112 of the refrigeration compartment 110. The end side wall 112 of the refrigeration compartment 110 refers to a side wall in the refrigeration compartment 110 that connects its rear side wall 111 and the opening and is arranged vertically. The sliding guide rail 312 can be slidably connected to the fixed guide rail 311. The second door body 300 can be connected to an end of the sliding guide rail 312 that is away from the rear side wall 111 of the refrigeration compartment 110. When a pulling force or a pushing force is applied to the second door body 300, the second door body 300 can drive the sliding guide rail 312 to slide relative to the fixed guide rail 311, thereby opening or closing the refrigeration compartment 110.

[0206] For example, there may be two guide rail pairs 310, and the two guide rail pairs 310 may be symmetrically arranged along the central plane of the height direction y in the cabinet 100. The fixed guide rails 311 in the two guide rail pairs 310 are respectively fixedly connected to the two end side walls 112 opposite to the refrigerating compartment 110, and the ends of the sliding guide rails 312 in the two guide rail pairs 310 facing away from the rear side wall 111 of the refrigerating compartment 110 are both fixedly connected to the second door body 300.

[0207] For example, the refrigerator of the embodiment of the present application may further include a drawer 320, which may be disposed between the sliding rails 312 of the two guide rail pairs 310 and fixedly connected to the two sliding rails 312. In the process of opening or closing the second door 300, the sliding rails 312 may drive the drawer 320 to extend or retract from the refrigeration compartment 110, so that the user can take items in and out of the drawer 320, thereby improving the convenience of using the refrigerator.

[0208] The refrigerator of the embodiment of the present application may further include an automatic door opening and closing device 400, which can be used to automatically open or close the door body, thereby improving the convenience of opening and closing the door body and enhancing the user experience.

[0209] In some possible implementations of the present application, the number of automatic door opening and closing devices 400 may be the same as the number of door bodies. That is, each door body may be provided with an automatic door opening and closing device 400. Each automatic door opening and closing device 400 may automatically open or close the door body corresponding thereto. Exemplarily, when the door body is a first door body 200, the number of automatic door opening and closing devices 400 may be the same as the number of first door bodies 200. For example, when two first door bodies 200 are provided corresponding to the same refrigeration compartment 110, the number of automatic door opening and closing devices 400 may also be two. Each first door body 200 may be provided with an automatic door opening and closing device 400. Each automatic door opening and closing device 400 is used to automatically open or close the first door body 200 corresponding thereto.

[0210] In some other possible implementations of the embodiments of the present application, the number of automatic door opening and closing devices 400 may also be greater than the number of door bodies. That is, a plurality of automatic door opening and closing devices 400 may be provided corresponding to each door body. The plurality of automatic door opening and closing devices 400 may act synchronously to automatically open or close the door bodies corresponding to the plurality of automatic door opening and closing devices 400. Exemplarily, when the door body is the second door body 300, the number of automatic door opening and closing devices 400 may be greater than the number of the second door bodies 300. For example, two automatic door opening and closing devices 400 may be provided corresponding to one second door body 300. The two automatic door opening and closing devices 400 may be provided on opposite sides of the second door body 300, respectively. The two automatic door opening and closing devices 400 may act synchronously to open or close the second door body 300, thereby improving the stability of the second door body 300 during the opening or closing process.

[0211] The automatic door opening and closing device 400 may include a driving mechanism 600 and an actuator 800. The driving mechanism 600 is used to provide a driving force. The actuator 800 may connect the driving mechanism 600 and the door body, and is configured to open or close the door body under the action of the driving force.

[0212] For example, reference Figure 5 and Figure 6 The automatic door opening and closing device 400 may further include a housing 500, and the housing 500 may be connected to the cabinet 100. For example, when the automatic door opening and closing device 400 is used to open or close the first door 200, the housing 500 may be connected to the top of the cabinet 100. When the automatic door opening and closing device 400 is used to open or close the second door 300, the housing 500 may be connected to the end side wall 112 of the refrigeration compartment 110. It is understandable that the housing 500 may also be installed at other positions of the cabinet 100, and this embodiment of the present application will not be repeated.

[0213] A first accommodating cavity may be constructed in the housing 500, and at least part of the driving mechanism 600 and at least part of the actuator 800 may be accommodated and installed in the first accommodating cavity. By providing the housing 500, at least part of the components of the automatic door opening and closing device 400 may be provided in the housing 500, so as to perform a modular design on the automatic door opening and closing device 400, thereby improving the convenience of assembling, installing and maintaining the automatic door opening and closing device 400.

[0214] Exemplarily, the housing 500 may be a split structure, so that at least part of the driving mechanism 600, at least part of the actuator 800 or other parts can be installed in the housing 500. For example, the housing 500 may include a first housing 510 and a second housing 520 that are detachably connected. The first housing 510 may be formed with a first sub-accommodating cavity 511 having a first opening. The second housing 520 may be formed with a second sub-accommodating cavity 521 having a second opening. When the first housing 510 and the second housing 520 are buckled together, the first opening and the second opening are opposite, and the first sub-accommodating cavity 511 and the second sub-accommodating cavity 521 are surrounded to form a first accommodating cavity.

[0215] The first housing 510 may include a first bottom plate 512 and a first side plate 513. The first bottom plate 512 may be connected to the housing 100. For example, the first bottom plate 512 may be detachably connected to the top of the housing 100 by connecting bolts, or connected to the end side wall 112 of the refrigeration compartment 110. The first side plate 513 may be perpendicular to the first bottom plate 512, surround the first bottom plate 512, and be connected to the edge of the first bottom plate 512. The first side plate 513 and the first bottom plate 512 are arranged to form a first sub-accommodation chamber 511 having a first opening.

[0216] The second housing 520 may include a second bottom plate 522 and a second side plate 523. The second side plate 523 is perpendicular to the second bottom plate 522, surrounds the second bottom plate 522, and is connected to the edge of the second bottom plate 522. The second side plate 523 and the second bottom plate 522 are arranged to form a second sub-accommodating cavity 521 having a second opening.

[0217] It is understandable that in some possible implementations of the present application, the housing 500 may be eliminated, and the components of the automatic door opening and closing device 400 may be connected to the box 100, which will not be described in detail in the present application. The following takes the automatic door opening and closing device 400 provided with the housing 500 as an example to illustrate the technical solution of the present application embodiment.

[0218] The driving mechanism 600 is used to provide a driving force for the automatic door opening and closing device 400 to open or close the door body. Figure 5 and Figure 6 The driving mechanism 600 may include a driving motor 610, which may be installed in the housing 500. The driving motor 610 has a rotatable output shaft, which may be connected to the actuator 800 to provide driving force to the actuator 800. It is understandable that the driving motor 610 may be replaced by other components that can provide driving force, such as a pneumatic motor or a hydraulic motor, etc., which will not be described in detail in the present embodiment of the application.

[0219] The driving mechanism 600 may further include a first worm 620 and a first worm wheel 630. The first end of the first worm 620 may be connected to the first output shaft of the driving motor 610. The first worm wheel 630 may be rotatably mounted in the housing 500. For example, a first rotating shaft 631 may be mounted on one side of the first bottom plate 512 located in the first sub-accommodating chamber 511. The first worm wheel 630 may be sleeved on the first rotating shaft 631 and may be rotatable on the first rotating shaft 631. The first worm wheel 630 may be meshed with the first worm 620 and be transmission-connected with the actuator 800. When the driving mechanism 600 is in motion, the output shaft of the driving motor 610 rotates, the output shaft drives the first worm 620 to rotate, the first worm 620 drives the first worm wheel 630 meshed therewith to rotate, and the first worm wheel 630 drives the actuator 800 to operate to open or close the door body. By providing the first worm 620 and the first worm wheel 630 , the rotation speed of the driving force provided by the driving motor 610 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 800 .

[0220] The driving mechanism 600 may further include a first mounting seat 640, which may be connected to the housing 500, for example, the first mounting seat 640 may be connected to the first bottom plate 512, and may be spaced apart from the first driving motor 610. The second end of the first worm 620 may be rotatably connected to the first mounting seat 640. When the output shaft drives the first worm 620 to rotate, the first mounting seat 640 may support the second end of the first worm 620, thereby improving the stability of the first worm 620 during rotation, so as to smoothly transmit the driving force to the actuator 800.

[0221] The automatic door opening and closing device 400 may further include a transmission gear train 700, which may be mounted on the housing 100, for example, the transmission gear train 700 may be mounted in the housing 500. The transmission gear train 700 may include at least one first transmission gear 710, which connects the driving mechanism 600 and the actuator 800. The driving mechanism 600 may transmit the driving force to the actuator 800 through the transmission gear train 700, so that the actuator 800 operates. By providing the transmission gear train 700, the layout flexibility of the driving mechanism 600 and the actuator 800 can be improved, which is conducive to the miniaturization of the automatic door opening and closing device 400. The transmission gear train 700 may also adjust the speed, torque, direction and other parameters of the driving force to meet the requirements of the actuator 800 for the driving force. In addition, the transmission gear train 700 has high transmission efficiency and transmission accuracy, which can reduce the driving power requirements of the driving mechanism 600, thereby reducing the cost of the driving mechanism 600, thereby reducing the cost of the components of the automatic door opening and closing device 400, and can enhance the stability during transmission.

[0222] The actuator 800 is used to open or close the door body under the action of the driving force provided by the driving mechanism 600. In some possible implementations of the embodiment of the present application, the actuator 800 may include a first actuator 810. For example, referring to Figure 6 The first actuator 810 may include a push rod 811, which may slide relative to the box 100 in the depth direction x and is connected to the driving mechanism 600. The driving mechanism 600 can drive the push rod 811 to slide in the depth direction x to apply a thrust to the door body, thereby opening the door body and realizing the function of automatically opening the door body.

[0223] In some related art refrigerators, the door in a closed state is subject to the suction of the magnetic door seal, the elastic force of the door closer, the clamping force of the flip beam, and the negative pressure generated by the low temperature in the refrigeration compartment 110, etc., so that it is necessary to resist a large resistance in the initial stage of opening the door, which increases the difficulty of opening the door. The refrigerator of the embodiment of the present application is provided with a first actuator 810, and the first actuator 810 is provided with a push rod 811. The push rod 811 can slide toward the door under the drive of the driving mechanism 600, thereby applying a thrust to the door to overcome the resistance in the initial stage of opening the door, thereby improving the convenience of opening the door and enhancing the user experience.

[0224] The following takes the door body as the first door body 200 as an example to specifically describe the first actuator 810. When the door body is the second door body 300, the technical solution can refer to the following description, which will not be repeated in the present embodiment.

[0225] like Figure 6 and Figure 7 As shown, the housing 500 may be provided with a first sliding through hole 530 facing the first door body 200, and the push rod 811 may be inserted into the first sliding through hole 530 and slidably connected with the housing 500 along the depth direction x. Exemplarily, two sliding protrusions 514 may be provided on one side of the first bottom plate 512 located in the first sub-accommodating chamber 511, and the two sliding protrusions 514 may both extend along the depth direction x and be spaced apart in a direction perpendicular to the depth direction x. The two sliding protrusions 514 and the first bottom plate 512 may be arranged to form a second sliding recess 515. The first side plate 513 may be provided with a first groove 531 facing the door body, and the first groove 531 may be opposite to the second sliding recess 515. The second side plate 523 may be provided with a second groove 532. When the first housing 510 and the second housing 520 are engaged with each other, the first groove 531 and the second groove 532 are arranged to form the first sliding through hole 530. When the driving mechanism 600 applies a driving force to the push rod 811 , the push rod 811 can slide relative to the housing 500 and extend through the first sliding through hole 530 to apply a thrust to the first door body 200 , thereby realizing the function of automatically opening the first door body 200 .

[0226] Exemplarily, the first actuator 810 may further include a first transmission rack 812, which may be arranged along the depth direction x and connected to the push rod 811. The first transmission rack 812 may be meshed with the transmission gear train 700. The driving mechanism 600 may drive the first transmission rack 812 to move through the transmission gear train 700, thereby driving the push rod 811 to extend out of the housing 500. The transmission gear train 700 and the first transmission rack 812 have high transmission efficiency and transmission accuracy, which can reduce the requirements for the driving power of the driving mechanism 600, thereby reducing the component cost of the automatic door opening and closing device 400; and can enhance the stability during transmission, thereby improving the stability of the push rod 811 when sliding relative to the housing 500.

[0227] The first actuator 810 may further include a first elastic member 813, which connects the push rod 811 and the housing 100 to apply a first force opposite to the depth direction x to the push rod 811. The first force may make the first transmission rack 812 and the transmission gear train 700 always in single-sided contact, so as to reduce or prevent the backlash error of the transmission gear train 700 from affecting the transmission between the first transmission rack 812 and the transmission gear train 700, thereby improving the transmission accuracy between the transmission rack and the transmission gear train 700, and thus improving the position accuracy of the push rod 811.

[0228] For example, at least one of the first transmission gears 710 includes a first output gear 720 meshing with a transmission rack, and the first output gear 720 may mesh with the first transmission rack 812. Figure 6 As shown, the number of the first transmission gears 710 can be three, and the transmission gear meshed with the first transmission rack 812 among the three first transmission gears 710 is the first output gear 720. One of the other two first transmission gears 710 can be coaxially arranged with the first worm gear 630. Another first transmission gear 710 can be coaxially arranged with the first output gear 720 and meshed with one first transmission gear 710. When the first worm gear 630 rotates, it can drive the first transmission gear 710 coaxially arranged with it to rotate, and the first transmission gear 710 drives the other first transmission gear 710 to rotate, and drives the first output gear 720 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 710 can be set according to the specific situation, and the embodiment of the present application will not be repeated.

[0229] A plurality of first transmission teeth may be provided at intervals on a part of the circumference of the first output gear 720. That is, the first output gear 720 may be an incomplete gear. When the plurality of first transmission teeth are meshed with the first transmission rack 812, the driving mechanism 600 may extend the push rod 811 through the first output gear 720 to apply a thrust to the first door body 200, thereby opening the first door body 200. When the push rod 811 is extended to a preset length, the plurality of first transmission teeth are separated from the first transmission rack 812, and the push rod 811 may be automatically reset under the action of the first elastic member 813, without the need to perform a reset operation on the push rod 811, thereby improving the convenience of the automatic door opening and closing device 400 when in use.

[0230] For example, Figure 7 As shown, when the driving motor 610 is in motion, the driving motor 610 can drive the first worm 620 to rotate, the first worm 620 can drive the first worm wheel 630 to rotate clockwise, the first worm wheel 630 drives the first transmission gear 710 coaxially arranged therewith to rotate clockwise, the first transmission gear 710 drives another first transmission gear 710 to rotate counterclockwise, and another first transmission gear 710 drives the first output gear 720 to rotate counterclockwise, so that the first transmission teeth at the end of the plurality of first transmission teeth are meshed with the first transmission rack 812. The driving motor 610 continues to operate, so that the plurality of first transmission teeth drive the first transmission rack 812 meshed therewith to move along the depth direction x, thereby driving the push rod 811 to move relative to the box body 100 along the depth direction x, so as to apply thrust to the first door body 200, thereby automatically opening the first door body 200.

[0231] like Figure 8 As shown, when the push rod 811 extends to a preset length, the first transmission tooth at the other end of the plurality of first transmission teeth leaves the first transmission rack 812, so that the push rod 811 is disengaged from the transmission gear train 700. The first elastic member 813 applies a first force opposite to the depth direction x to the push rod 811, so that the push rod 811 is retracted into the housing 500. The user can continue to manually open the first door body 200 to open the first door body 200 to a larger angle.

[0232] In some other possible implementations of the present application, the actuator 800 may include a second actuator 820. Fig. 9 , Fig.10 , Fig.11 and Fig.12The second actuator 820 may include a rocker 821, the first end of which may be connected to the box 100 for rotation around a first axis S1, and the first axis S1 may be arranged along the height direction y. The second end of the rocker 821 may be connected to the top of the first door body 200 for rotation around a second axis S2, and may be connected to the top of the first door body 200 for sliding in a direction parallel to the first door body 200, and the second axis S2 may be parallel to the first axis S1. The driving mechanism 600 may drive the rocker 821, so that the first end of the rocker 821 rotates relative to the box 100, and the second end of the rocker 821 slides and rotates relative to the door body, so as to open or close the first door body 200.

[0233] like Fig.11 As shown, when the first door body 200 is closed, the driving mechanism 600 can apply a driving force to the rocker arm 821, so that the first end of the rocker arm 821 rotates in direction A relative to the box body 100, and the second end of the rocker arm 821 slides in direction B relative to the first door body 200, and the second end of the rocker arm 821 applies a torque in direction A to the first door body 200 to rotate the first door body 200 toward the box body 100, thereby closing the first door body 200.

[0234] like Fig.12 As shown, when the first door body 200 is opened, the driving mechanism 600 can apply a reverse driving force to the rocker arm 821, so that the first end of the rocker arm 821 rotates in a direction C opposite to the direction A relative to the box body 100, and the second end of the rocker arm 821 slides in a direction D opposite to the direction B relative to the first door body 200, and the second end of the rocker arm 821 applies a torque in direction C to the first door body 200 to rotate the first door body 200 away from the box body 100, thereby opening the first door body 200.

[0235] Compared with the first actuator 810, the second actuator 820 can not only automatically open the first door body 200, but also automatically close the first door body 200, thereby increasing the function of the automatic door opening and closing device 400 and improving the user experience. In addition, by setting the second actuator 820, in the process of opening and closing the first door body 200, the torque applied by the second end of the rocker 821 to the first door body 200 has the same speed and torque as or approximately the same speed. Therefore, when automatically opening or closing the first door body 200, there is no need to perform frequency conversion control on the drive mechanism 600, which reduces the control difficulty of the drive mechanism 600; and there is no need to increase the driving power of the drive mechanism 600, so there is no need to increase the volume of the drive mechanism 600, eliminating the influence of increasing the volume of the drive mechanism 600 on the height of the refrigerator.

[0236] like Fig.10As shown, the side of the housing 500 facing away from the top of the box body 100, for example, the second bottom plate 522 may be provided with a first connecting through hole 524 connected to the first accommodating chamber. The second actuator 820 may also include a second rotating shaft 822, which is inserted into the first connecting through hole 524 and can rotate in the first connecting through hole 524. One end of the second rotating shaft 822 located in the first accommodating chamber may be rotatably connected to the housing 500, for example, the first bottom plate 512 may be provided with a second rotating recessed portion, and one end of the second rotating shaft 822 located in the first accommodating chamber may be inserted into the second rotating recessed portion. The outer side wall of the second rotating shaft 822 located in the first accommodating chamber may be transmission-connected to the driving mechanism 600. One end of the second rotating shaft 822 extending out of the first connecting through hole 524 may be fixedly connected to the first end of the rocker 821. For example, the end of the second shaft 822 extending out of the first connection through hole 524 may be a square columnar structure 823, and the first end of the rocker 821 may be provided with a square first connection recess 824, and the first connection recess 824 is sleeved on the square columnar structure 823, so that the second shaft 822 is fixedly connected to the rocker 821. When the driving mechanism 600 is in motion, the second shaft 822 can be driven to rotate relative to the housing 500, thereby driving the first end of the rocker 821 to rotate relative to the box body 100. The axis of the second shaft 822 is the first axis S1.

[0237] The outer wall of the second rotating shaft 822 located in the first accommodating cavity may be provided with a plurality of second transmission teeth 825, and the plurality of second transmission teeth 825 may mesh with the transmission gear train 700. The transmission gear train 700 and the plurality of second transmission teeth 825 have high transmission efficiency and transmission accuracy, which can reduce the requirements for the driving power of the driving mechanism 600, thereby reducing the component cost of the automatic door opening and closing device 400; and can enhance the stability during transmission, thereby improving the stability of the push rod 811 when sliding relative to the housing 500.

[0238] One of the second end of the rocker 821 and the first door body 200 may be provided with a third sliding recess 240 extending in a direction parallel to the first door body 200, and the other may be provided with a sliding post 826, which may be slidably disposed in the third sliding recess 240 and rotatable in the third sliding recess 240, and the center line of the sliding post 826 is the second axis S2. For example, Fig.11 and Fig.12As shown, the third sliding recessed portion 240 can be arranged at the top of the first door body 200. The sliding column 826 can be arranged at the second end of the rocker 821. Alternatively, the third sliding recessed portion 240 can be arranged at the second end of the rocker 821, and the sliding column 826 can be arranged at the top of the first door body 200. The second end of the rocker 821 and the top of the first door body 200 are connected through the third sliding recessed portion 240 and the sliding column 826 slidingly arranged in the third sliding recessed portion 240. The side wall of the third sliding recessed portion 240 can guide and limit the sliding column 826, thereby improving the stability and reliability of the sliding column 826 when sliding and rotating in the third sliding recessed portion 240, thereby improving the stability and reliability of the relative movement between the rocker 821 and the first door body 200.

[0239] In some other possible implementations of the present application, Fig.13 , Fig.14 , Fig.15 and Fig.16 As shown, the actuator 800 may also include a first actuator 810 and a second actuator 820, and the driving mechanism 600 may drive the first actuator 810 and the second actuator 820 to operate, so as to automatically open or close the first door body 200 through the mutual cooperation of the first actuator 810 and the second actuator 820.

[0240] The specific structures of the first actuator 810 and the second actuator 820 can refer to the above description, and will not be described in detail in the embodiment of the present application.

[0241] Exemplarily, the driving mechanism 600 may include two driving motors 610. A portion of the first transmission gear 710 in the transmission gear train 700 connects one of the driving motors 610 and the first actuator 810. The driving motor 610 drives the first actuator 810 to move through the portion of the first transmission gear 710. Another portion of the first transmission gear 710 in the transmission gear train 700 connects another driving motor 610 and the second actuator 820. Another driving motor 610 drives the second actuator 820 to move through another portion of the first transmission gear 710.

[0242] Exemplarily, there are two first worm gears 620 and two first worm gears 630 , one of which is corresponding to one drive motor 610 , and the other first worm gear 620 and the other first worm gear 630 are corresponding to the other drive motor 610 .

[0243] like Fig.13As shown, when the first door body 200 is opened, the driving motor 610 for providing driving force for the first actuator 810 is actuated, driving the first worm 620 connected thereto to rotate, thereby driving the correspondingly arranged first worm gear 630 to rotate clockwise. The first worm gear 630 drives part of the first transmission gear 710 to operate, so that the first output gear 720 rotates counterclockwise, and the first transmission teeth located at the end of the plurality of first transmission teeth mesh with the first transmission rack 812.

[0244] like Fig.14 As shown, the drive motor 610 continues to operate, the first output gear 720 continues to rotate counterclockwise, and the multiple first transmission teeth drive the first transmission rack 812 meshing therewith to move along the depth direction x, thereby driving the push rod 811 to move along the depth direction x relative to the box body 100 to apply thrust to the first door body 200 to overcome the resistance in the initial stage of opening the first door body 200.

[0245] like Fig.15 As shown, when the push rod 811 is extended to a preset length, the first transmission tooth at the other end of the plurality of first transmission teeth leaves the first transmission rack 812, so that the push rod 811 is disengaged from the transmission gear train 700. The first elastic member 813 applies a first force opposite to the depth direction x to the push rod 811, so that the push rod 811 moves along the direction -x to be retracted into the housing 500. The driving motor 610 can stop operating, or stop operating after driving the first output gear 720 to continue rotating to a position before the first tooth engages with the first transmission rack 812.

[0246] Continue to refer Fig.15 , the driving motor 610 for providing driving force for the second actuator 820 is actuated, driving the first worm 620 connected thereto to rotate, thereby driving the corresponding first worm wheel 630 to rotate counterclockwise. The first worm wheel 630 drives another part of the first transmission gear 710 to operate, so that the first transmission gear 710 drives the second shaft 822 and the first end of the rocker 821 to rotate in the direction C relative to the box body 100, and the second end of the rocker 821 slides in the direction D relative to the first door body 200, and the second end of the rocker 821 applies a torque in the direction C to the first door body 200, so that the first door body 200 rotates in the direction away from the box body 100, so as to continue to open the first door body 200.

[0247] like Fig.16As shown, when the first door body 200 is closed, the driving motor 610 for providing driving force for the second actuator 820 is actuated to drive the first worm 620 connected thereto to rotate, thereby driving the corresponding first worm wheel 630 to rotate clockwise. The first worm wheel 630 drives another part of the first transmission gear 710 to rotate in the opposite direction, so that the first transmission gear 710 drives the second rotating shaft 822 and the first end of the rocker 821 to rotate in direction A relative to the box body 100, and the second end of the rocker 821 slides in direction B relative to the first door body 200, and the second end of the rocker 821 applies a torque in direction A to the first door body 200, so that the first door body 200 rotates in a direction close to the box body 100, so as to close the first door body 200.

[0248] In some other possible implementations of the embodiment of the present application, the actuator 800 may include a third actuator 830. The third actuator 830 is specifically described below by taking the door body as the second door body 300 as an example. Fig.17 The third actuator 830 may include a second transmission rack 831, which may be slidable relative to the box body 100 in the depth direction x and connected to the second door body 300. The driving mechanism 600 is in transmission connection with the second transmission rack 831. When the driving mechanism 600 is in motion, the driving motor 610 may drive the first worm 620 to rotate, the first worm 620 drives the first worm wheel 630 to rotate, and the first worm wheel 630 drives the transmission gear train 700 to operate. The transmission gear train 700 drives the second transmission rack 831 to slide back and forth relative to the box body 100 in the depth direction x, so that the second door body 300 moves away from or approaches the box body 100, thereby automatically opening or closing the second door body 300.

[0249] The second transmission rack 831 can be fixedly connected to the sliding guide rail 312. Under the action of the driving mechanism 600, the second transmission rack 831 can drive the sliding guide rail 312 to move relative to the fixed guide rail 311, so that the sliding guide rail 312 drives the second door body 300 to move relative to the box body 100, thereby improving the stability of the second door body 300 when moving, thereby improving the functional reliability of the automatic door opening and closing device 400.

[0250] The automatic door opening and closing device 400 may further include a clutch mechanism 900, which may be disposed between the driving mechanism 600 and the actuator 800, and is used to connect or disconnect the driving mechanism 600 and the actuator 800. The clutch mechanism 900 may also be configured to arbitrarily control the timing of connecting or disconnecting the driving mechanism 600 and the actuator 800, so as to increase the function of the automatic door opening and closing device 400 and improve the user experience.

[0251] Exemplarily, the clutch mechanism 900 can be arranged between the driving mechanism 600 and the first actuator 810. The clutch mechanism 900 has an engaged state and a disengaged state. When the clutch mechanism 900 is in the engaged state, the clutch mechanism 900 can make the driving mechanism 600 and the first actuator 810 transmission connected. The driving mechanism 600 can transmit the driving force to the first driving mechanism 600 through the clutch mechanism 900, so that the push rod 811 extends to apply a thrust to the door body, thereby automatically opening the door body. When the clutch mechanism 900 is in the disengaged state, the clutch mechanism 900 disconnects the driving mechanism 600 and the first actuator 810, and the push rod 811 can be automatically reset under the action of the first elastic member 813. Therefore, the clutch mechanism 900 can be controlled to be in a combined state or a disengaged state, and the timing of extending or automatically retracting the push rod 811 can be arbitrarily controlled to increase the function of the automatic door opening and closing device 400 and improve the user experience. For example, during the process of automatically opening the door body, if the door body encounters a large obstacle and cannot be opened, the clutch mechanism 900 can be controlled to be in a separated state, and the push rod 811 can be automatically reset under the action of the first elastic member 813, thereby preventing the push rod 811, the driving mechanism 600, etc. from being damaged due to excessive load, thereby improving the structural reliability of the automatic door opening and closing device 400.

[0252] like Figures 10 to 16 As shown, the clutch mechanism 900 can also be arranged between the driving mechanism 600 and the second actuator 820. When the clutch mechanism 900 is in an engaged state, the clutch mechanism 900 can make the driving mechanism 600 and the second actuator 820 transmission connected. The driving mechanism 600 can transmit the driving force to the second actuator 820 through the clutch mechanism 900, so that the rocker 821 rotates relative to the door body or rotates in the opposite direction to automatically open or close the door body. When the clutch mechanism 900 is in a disengaged state, the clutch mechanism 900 disconnects the driving mechanism 600 and the second actuator 820. The user can manually open or close the door body, and the force applied by the user to the door body to open or close the door body will not be transmitted to the driving mechanism 600. In this way, the automatic door opening and closing device 400 can be compatible with the automatic door opening and closing function and the manual door opening and closing function, which increases the function of the automatic door opening and closing device 400 and improves the user experience.

[0253] like Fig.17As shown, the clutch mechanism 900 can also be arranged between the driving mechanism 600 and the third actuator 830. When the clutch mechanism 900 is in an engaged state, the clutch mechanism 900 enables the driving mechanism 600 and the third actuator 830 to be transmission-connected. The driving mechanism 600 can transmit the driving force to the third actuator 830 through the clutch mechanism 900, so that the second transmission rack 831 can drive the door body away from or close to the box body 100, thereby automatically opening or closing the door body. When the clutch mechanism 900 is in a disengaged state, the clutch mechanism 900 disconnects the driving mechanism 600 and the third actuator 830. The user can manually open or close the door body, and the force applied by the user to the door body to open or close the door body will not be transmitted to the driving mechanism 600. In this way, the automatic door opening and closing device 400 can be compatible with the automatic door opening and closing function and the manual door opening and closing function, thereby increasing the function of the automatic door opening and closing device 400 and improving the user experience.

[0254] It is understandable that, by providing the clutch mechanism 900, the automatic door opening and closing device 400 can also achieve other functions, which will not be described in detail in the embodiments of the present application.

[0255] The clutch mechanism 900 is described in detail below by taking the clutch mechanism 900 disposed between the driving mechanism 600 and the second actuator 820 as an example. When the clutch mechanism 900 is disposed at other positions, the technical solution can refer to the following description, and the present embodiment will not be repeated.

[0256] refer to Fig.18 The clutch mechanism 900 may include a clutch assembly 910 and a clutch drive assembly 920. The clutch drive assembly 920 is used to provide a clutch force. The clutch assembly 910 is disposed between the drive mechanism 600 and the second actuator 820, and the clutch assembly 910 is configured to connect or disconnect the drive mechanism 600 and the second actuator 820 under the action of the clutch force. The clutch drive assembly 920 can drive the clutch assembly 910 to connect or disconnect the drive mechanism 600 and the second actuator 820. Therefore, the clutch drive assembly 920 can be controlled to control the timing of the clutch mechanism 900 being in an engaged state and a disengaged state, which is beneficial to increase the function of the automatic door opening and closing device 400 and improve the user experience.

[0257] For example, reference Fig.19 , Fig. 20 and Fig.21The clutch assembly 910 may include a first clutch gear 911 and a second clutch gear 912 that are coaxially arranged and relatively rotatable. One of the first clutch gear 911 and the second clutch gear 912 may be transmission-connected to the drive mechanism 600, and the other may be transmission-connected to the second actuator 820. For example, the first clutch gear 911 may be transmission-connected to the drive mechanism 600, and the second clutch gear 912 may be transmission-connected to the second actuator 820. Alternatively, the first clutch gear 911 may be transmission-connected to the second actuator 820, and the second clutch gear 912 may be transmission-connected to the drive mechanism 600. A second connection recess 9122 may be provided on one side of the second clutch gear 912 facing the first clutch gear 911.

[0258] The clutch assembly 910 may further include a sliding key 913, which may be slidably connected to the first clutch gear 911 along the radial direction of the first clutch gear 911, and at least part of the sliding key 913 is located in the second connection recess 9122. The clutch drive assembly 920 is connected to the sliding key 913 to drive the sliding key 913 to slide relative to the first clutch gear 911.

[0259] When the clutch mechanism 900 is in the engaged state, the clutch drive assembly 920 can drive the sliding key 913 to slide relative to the first clutch gear 911, so that the sliding key 913 abuts against the circumferential side wall of the second connection recess 9122, so that the first clutch gear 911 and the second clutch gear 912 are connected through the sliding key 913, so that the first clutch gear 911 and the second clutch gear 912 can rotate synchronously. The driving mechanism 600 can transmit the driving force to the second actuator 820 through the synchronously rotating first clutch gear 911 and the second clutch gear 912, so that the second actuator 820 is actuated to automatically open or close the door body.

[0260] When the clutch mechanism 900 is in the disengaged state, the clutch drive assembly 920 can drive the sliding key 913 to slide in the opposite direction relative to the first clutch gear 911, so that the sliding key 913 is separated from the circumferential side wall of the second connection recess 9122, so that the first clutch gear 911 and the second clutch gear 912 are separated, so that the first clutch gear 911 and the second clutch gear 912 can rotate relative to each other. The driving force provided by the driving mechanism 600 will not be transmitted to the second actuator 820, and the reverse load on the second actuator 820 will not be transmitted to the driving mechanism 600, and the user can manually open or close the door body.

[0261] Exemplarily, the clutch assembly 910 can be disposed between two first transmission gears 710 whose axes are parallel and adjacent to each other in the transmission gear train 700. The first clutch gear 911 can mesh with one of the first transmission gears 710, and the second clutch gear 912 in the clutch assembly 910 can mesh with the other first transmission gear 710. It can be understood that the clutch assembly 910 can also be disposed between the transmission gear train 700 and the driving mechanism 600, one of the first clutch gear 911 and the second clutch gear 912 can mesh with the transmission gear train 700, and the other can be connected to the driving mechanism 600. The clutch assembly 910 can also be disposed between the transmission gear train 700 and the second actuator 820, one of the first clutch gear 911 and the second clutch gear 912 can mesh with the transmission gear train 700, and the other can be connected to the second actuator 820.

[0262] The first clutch gear 911 is rotatably mounted on the housing 100. For example, the clutch assembly 910 may further include a third rotating shaft 914, one end of which may be fixedly connected to the first bottom plate 512 of the first housing 510. Fig.21 and Fig. 22 As shown, the first clutch gear 911 may be provided with a first mounting hole 9111 , and the first mounting hole 9111 may be sleeved on the third rotating shaft 914 , so that the first clutch gear 911 may rotate on the third rotating shaft 914 .

[0263] The second clutch gear 912 is rotatably mounted on the housing 100 and is coaxially arranged with the first clutch gear 911. Fig.21 and Fig.23 As shown, the second clutch gear 912 may be provided with a second mounting hole 9121, and the second mounting hole 9121 may be sleeved on the third rotating shaft 914, so that the second clutch gear 912 may rotate on the third rotating shaft 914. In this way, the first clutch gear 911 and the second clutch gear 912 may be mounted on the housing 100 through the third rotating shaft 914, thereby improving the coaxiality of the first clutch gear 911 and the second clutch gear 912. The second connecting recess 9122 may be provided on the side of the second clutch gear 912 facing the first clutch gear 911, for accommodating at least part of the sliding key 913.

[0264] For example, reference Fig.24 and Fig.25 The sliding key 913 may include a first sliding portion 9131 and a first connecting portion 9132 connected to each other, wherein the first sliding portion 9131 is used for slidingly connecting with the first clutch gear 911 along the radial direction of the first clutch gear 911. The first connecting portion 9132 may be located in the second connecting recessed portion 9122, and is used for abutting against the circumferential side wall of the second connecting recessed portion 9122.

[0265] The number of the sliding key 913 can be one or more. Fig.19 As shown, the number of sliding keys 913 can be two, and the two sliding keys 913 can be respectively located on both sides of the axis of the first clutch gear 911. The clutch drive assembly 920 can drive the two sliding keys 913 to move in opposite directions, so that the two sliding keys 913 are both in contact with the circumferential side walls of the second connection recess 9122, thereby switching the clutch mechanism 900 to an engaged state. The clutch drive assembly 920 can drive the two sliding keys 913 to move toward each other, so that the two first sliding keys 913 are separated from the circumferential side walls of the second connection recess 9122, thereby switching the clutch mechanism 900 to a separated state. It is understandable that the number of sliding keys 913 can also be three or more, and the embodiments of the present application will not be repeated here. By providing a plurality of sliding keys 913, the connection strength between the first clutch gear 911 and the second clutch gear 912 can be increased when the clutch mechanism 900 is in an engaged state, thereby increasing the load of the clutch mechanism 900.

[0266] For example, the plurality of sliding keys 913 may be evenly arranged in the circumferential direction of the first clutch gear 911. Fig.21 As shown, when there are two sliding keys 913, the two sliding keys 913 can be symmetrically arranged along the axial center plane of the first clutch gear 911. In this way, the first clutch gear 911 and the second clutch gear 912 can be evenly connected in the circumferential direction through the plurality of sliding keys 913, thereby improving the stability of the first clutch gear 911 and the second clutch gear 912 when they rotate synchronously, thereby improving the transmission stability of the clutch mechanism 900 when it is in the engaged state.

[0267] like Fig.21 and Fig. 22 As shown, a fourth sliding recess 9112 may be provided on one side of the first clutch gear 911 facing the second clutch gear 912. The fourth sliding recess 9112 may be provided along the radial direction of the first clutch gear 911. A portion of the sliding key 913 may be slidably disposed in the fourth sliding recess 9112. For example, the first sliding portion 9131 may be slidably disposed in the fourth sliding recess 9112. The fourth sliding recess 9112 may guide and limit the sliding key 913 to improve the sliding stability and position accuracy of the sliding key 913, thereby improving the functional reliability of the clutch mechanism 900.

[0268] The number of the fourth sliding recessed portions 9112 may be set corresponding to the number of the first sliding portions 9131. Fig.19 and Fig. 22As shown, when the number of the sliding keys 913 is two and each sliding key 913 includes a first sliding portion 9131 , each sliding key 913 is correspondingly provided with a fourth sliding recessed portion 9112 .

[0269] refer to Fig.26 When the clutch drive assembly 920 can drive the first sliding portion 9131 to slide relative to the first clutch gear 911 in the fourth sliding recess 9112, the first sliding portion 9131 can drive the first connecting portion 9132 to slide, so that the first connecting portion 9132 abuts against the circumferential side wall of the second connecting recess 9122, so that the clutch mechanism 900 is in an engaged state. Fig. 27 The clutch drive assembly 920 can drive the first sliding portion 9131 to slide in the fourth sliding recess 9112 relative to the first clutch gear 911, and the first sliding portion 9131 can drive the first connecting portion 9132 to slide in the opposite direction, so that the first connecting portion 9132 is separated from the circumferential side wall of the second connecting recess 9122, so that the clutch mechanism 900 is in a separated state.

[0270] In some possible implementations of the present application, reference is made to Fig.28 , Fig.29 , Fig.30 and Fig.31 The sliding key 913 may further include a second sliding portion 9133 and a second connecting portion 9134. The second sliding portion 9133 and the first sliding portion 9131 may be respectively arranged on both sides of the axis of the first clutch gear 911, and the second sliding portion 9133 may be slidably connected with the first clutch gear 911 along the radial direction of the first clutch gear 911. The second connecting portion 9134 may be located on the side of the first clutch gear 911 facing the second clutch gear 912, and the second connecting portion 9134 connects the second sliding portion 9133 and the first connecting portion 9132. By providing the first sliding portion 9131 and the second sliding portion 9133, the sliding key 913 may be slidably connected with the first clutch gear 911 on both sides of the axis thereof, thereby improving the stability of the sliding key 913 when sliding relative to the first clutch gear 911.

[0271] The second connection portion 9134 may be provided with an avoidance through hole 9135 , and the avoidance through hole 9135 may allow the third rotating shaft 914 to pass through, so as to prevent the sliding key 913 from interfering with the third rotating shaft 914 .

[0272] refer to Fig.28 and Fig.29A fifth sliding recess 9113 may be further provided on one side of the first clutch gear 911 facing the second clutch gear 912. The fifth sliding recess 9113 may be provided along the radial direction of the first clutch gear 911, and the fifth sliding recess 9113 and the fourth sliding recess 9112 are respectively provided on both sides of the axis of the first clutch gear 911. The second sliding portion 9133 may be slidably provided in the fifth sliding recess 9113. The fifth sliding recess 9113 may guide and limit the second sliding portion 9133, so as to improve the sliding stability and position accuracy of the sliding key 913, thereby improving the functional reliability of the clutch mechanism 900.

[0273] At least one first guide portion 9114 may also be provided on the side of the first clutch gear 911 facing the second clutch gear 912. The first guide portion 9114 has a first guide surface 9115 facing the second connection portion 9134. The first guide surface 9115 may be provided along the radial direction of the first clutch gear 911 and abut against the second connection portion 9134. When the sliding key 913 slides relative to the first clutch gear 911, the first guide surface 9115 can guide the second connection portion 9134, thereby improving the stability of the sliding key 913 when sliding. Exemplarily, there may be two first guide portions 9114, which are respectively provided on both sides of the second connection portion 9134 to guide the second connection portion 9134 from both sides of the second connection portion 9134, thereby further improving the stability of the sliding key 913 when sliding.

[0274] When the clutch mechanism 900 is in an engaged state, the sliding key 913 can abut against the circumferential side wall of the second connection recess 9122, so that the first clutch gear 911 is connected to the second clutch gear 912 through the sliding key 913, so that the first clutch gear 911 and the second clutch gear 912 can rotate synchronously. In some possible implementations of the embodiment of the present application, the circumferential side wall of the second connection recess 9122 can be a first friction surface. One side of the first connection portion 9132 of the sliding key 913 facing the circumferential side wall of the second connection recess 9122 can be set as a second friction surface. When the clutch mechanism 900 is in an engaged state, the second friction surface abuts against the first friction surface to generate friction, so that the sliding key 913 is connected to the second clutch gear 912, so that the first clutch gear 911 and the second clutch gear 912 can rotate synchronously.

[0275] In some other possible implementations of the present application, Fig.23 , Fig.26 and Fig. 27As shown, the circumferential side wall of the second connection recess 9122 may be provided with a first accommodating recess 9123. When the clutch mechanism 900 is in the engaged state, the first accommodating recess 9123 may accommodate the first connection portion 9132 of the sliding key 913. Before the clutch mechanism 900 is switched to the engaged state, the relative position between the first clutch gear 911 and the second clutch gear 912 may be adjusted so that the first connection portion 9132 is opposite to the first accommodating recess 9123. When the clutch mechanism 900 is switched to the engaged state, the clutch drive assembly 920 drives the sliding key 913 to slide toward the first accommodating recess 9123, so that the first connection portion 9132 of the sliding key 913 is inserted into the first accommodating recess 9123, which can improve the connection strength between the sliding key 913 and the circumferential side wall of the second connection recess 9122, thereby improving the connection reliability between the first clutch gear 911 and the second clutch gear 912.

[0276] When there are multiple sliding keys 913, the number of first accommodating recesses 9123 on the circumferential side walls of the second connecting recess 9122 can be the same as the number of sliding keys 913, and can be arranged one-to-one with the first connecting portions 9132 of the sliding keys 913, so that the first connecting portion 9132 of each sliding key 913 can be accommodated in the corresponding first accommodating recess 9123 when the clutch mechanism 900 is in the engaged state.

[0277] When there are multiple sliding keys 913 in the clutch assembly 910, multiple first accommodating recesses 9123 corresponding to the multiple sliding keys 913 can form a first accommodating group 9124. For example, there can be multiple first accommodating groups 9124. Fig.23 As shown, when there are two sliding keys 913, two first accommodating recesses 9123 symmetrically arranged along the axial center plane of the second clutch gear 912 are respectively arranged corresponding to the two sliding keys 913 to form a first accommodating group 9124. The number of the first accommodating groups 9124 can be three, and the three first accommodating groups 9124 can be evenly arranged in the circumferential direction of the second clutch gear 912. Before the clutch mechanism 900 is switched to the engaged state, the relative position between the first clutch gear 911 and the second clutch gear 912 can be adjusted so that the plurality of sliding keys 913 are opposite to any one of the first accommodating groups 9124, thereby reducing the difficulty of adjusting between the first clutch gear 911 and the second clutch gear 912 and improving the ease of use of the clutch mechanism 900.

[0278] like Fig.19 , Fig.21 , Fig.26 and Fig. 27As shown, the clutch mechanism 900 may further include a second elastic member 915, which may connect the first clutch gear 911 and the sliding key 913 to apply a second force to the sliding key 913 to make the first connecting portion 9132 slide toward the circumferential side wall of the second connecting recess 9122. Fig.33 When the clutch mechanism 900 is switched to the engaged state, if the first connection portion 9132 of the sliding key 913 is not opposite to the first accommodating recess 9123, the clutch drive assembly 920 drives the sliding key 913 to slide toward the circumferential side wall of the second connection recess 9122, and the first connection portion 9132 will abut against the portion of the circumferential side wall of the second connection recess 9122 where the first accommodating recess 9123 is not provided. The drive mechanism 600 drives the first clutch gear 911 and the second clutch gear 912 to rotate relative to each other. When the first clutch gear 911 and the second clutch gear 912 rotate relative to each other until the first connection portion 9132 is opposite to the first accommodating recess 9123, under the action of the second force applied by the second elastic member 915 to the sliding key 913, the first connection portion 9132 can be as shown in FIG. Fig.26 As shown, the clutch mechanism 900 is automatically inserted into the first accommodating recess 9123. Therefore, before the clutch mechanism 900 is switched to the engaged state, it is not necessary to adjust the relative position between the first clutch gear 911 and the second clutch gear 912, thereby improving the convenience of use of the clutch mechanism 900.

[0279] For example, the second elastic member 915 may be a second compression spring, and the second compression spring may be disposed in the fourth sliding recess 9112 or the fifth sliding recess 9113. The second compression spring has a larger deformation amount and can provide a larger second force for the sliding key 913. Fig.21 As shown, the second compression spring may be disposed in the fourth sliding recess 9112. The fourth sliding recess 9112 may include a first side wall and a second side wall, and the first side wall and the second side wall may be spaced apart in the radial direction of the first clutch gear 911, and the first side wall is closer to the axis of the first clutch gear 911 than the second side wall. The second compression spring may be located between the first side wall of the fourth sliding recess 9112 and the first sliding portion 9131, and one end of the second compression spring may abut against the first side wall of the fourth sliding recess 9112, and the other end of the second compression spring may abut against the first sliding portion 9131.

[0280] The second compression spring may also be disposed in the fifth sliding recess 9113. The second compression spring may be located in the fifth sliding recess 9113. The fifth sliding recess 9113 may include a third side wall and a fourth side wall, and the third side wall and the fourth side wall may be spaced apart in the radial direction of the first clutch gear 911, and the third side wall is closer to the axis of the first clutch gear 911 than the fourth side wall. One end of the second compression spring may abut against the second side wall of the fifth sliding recess 9113, and the other end of the second compression spring may abut against the second sliding portion 9133.

[0281] Exemplarily, the second elastic member 915 may also be a second tension spring, and the second tension spring may be disposed in the fourth sliding recess 9112 or the fifth sliding recess 9113. For example, the second tension spring may be disposed in the fourth sliding recess 9112. One end of the second tension spring is connected to the second side wall of the fourth sliding recess 9112, and the other end of the second tension spring is connected to the first sliding portion 9131.

[0282] The second extension spring may also be disposed in the fifth sliding recess 9113. One end of the second extension spring is connected to the third side wall of the fifth sliding recess 9113, and the other end of the second compression spring may be connected to the second sliding portion 9133.

[0283] refer to Fig.25 , a second accommodating recess 9136 may be provided on one side of the sliding key 913 facing the second elastic member 915, and the second accommodating recess 9136 is used to accommodate at least part of the second elastic member 915. In this way, the internal space of the sliding key 913 can be used to accommodate the second elastic member 915, thereby reducing the overall radial size of the sliding key 913 and the second elastic member 915, thereby reducing the radial size of the clutch mechanism 900, which is conducive to the miniaturization of the automatic door opening and closing device 400. For example, Fig.21 and 25 As shown, when the second elastic member 915 is a second compression spring and the second compression spring is arranged in the fourth sliding recess 9112, a second accommodating recess 9136 can be provided on the side of the first sliding portion 9131 opposite to the first side wall of the fourth sliding recess 9112, at least part of the second compression spring can be accommodated in the second accommodating recess 9136, and one end of the second compression spring located in the second accommodating recess 9136 can abut against the side wall of the second accommodating recess 9136.

[0284] It can be understood that when the second compression spring is arranged in the fifth sliding recess 9113, the second tension spring is arranged in the fourth sliding recess 9112, or the second tension spring is arranged in the fifth sliding recess 9113, the first sliding part 9131 or the second sliding part 9133 can also be provided with a second accommodating recess 9136, and the embodiments of the present application will not be repeated here.

[0285] In some other possible implementations of the present application, Fig.28 , Fig.30 , Fig.32 , Fig.34 and Fig.35 As shown, the circumferential side wall of the second connection recess 9122 may be provided with a plurality of spaced third transmission teeth 9125. A side of the first connection portion 9132 of the sliding key 913 facing the circumferential side wall of the second connection recess 9122 may be provided with a plurality of spaced fourth transmission teeth 9137. When the clutch mechanism 900 is in an engaged state, the plurality of fourth transmission teeth 9137 mesh with part of the third transmission teeth 9125 in the plurality of third transmission teeth 9125. By providing the meshed fourth transmission teeth 9137 and the third transmission teeth 9125 on the circumferential side wall of the sliding key 913 and the second connection recess 9122, the connection strength between the sliding key 913 and the circumferential side wall of the second connection recess 9122 can be improved when the clutch mechanism 900 is in an engaged state, thereby improving the connection reliability between the sliding key 913 and the second clutch gear 912.

[0286] In addition, compared with the first connecting portion 9132 and the first accommodating recessed portion 9123, the third transmission tooth 9125 and the fourth transmission tooth 9137 are smaller in size. When the clutch mechanism 900 is switched to the engaged state, the first clutch gear 911 and the second clutch gear 912 have a relatively small amount of movement, or the first clutch gear 911 and the second clutch gear 912 do not need to rotate relative to each other, so that the fourth transmission tooth 9137 can be inserted between two adjacent third transmission teeth 9125. Therefore, before the clutch mechanism 900 is switched to the engaged state, there is no need to specifically adjust the relative position between the first clutch gear 911 and the second clutch gear 912, which shortens the switching time required when the clutch mechanism 900 is switched to the engaged state, thereby improving the response speed of the clutch mechanism 900 and improving the ease of use of the clutch mechanism 900. Moreover, in some possible implementations of the embodiments of the present application, the second elastic member 915 can be eliminated, thereby reducing the number of components in the clutch assembly 910, thereby simplifying the structure of the clutch mechanism 900 and reducing the difficulty of assembling and maintaining the clutch mechanism 900.

[0287] For example, reference Fig.35, the tooth top width H1 of the third transmission tooth 9125 can be less than or equal to 0.5 mm. If the tooth top width H1 of the third transmission tooth 9125 is greater than 0.5 mm, the size of the tooth top of the third transmission tooth 9125 will be too large. When the fourth transmission tooth 9137 is inserted between two adjacent third transmission teeth 9125, the tooth top of the third transmission tooth 9125 is easily abutted against the tooth top of the fourth transmission tooth 9137. By setting the tooth top width H1 of the third transmission tooth 9125 to be less than or equal to 0.5 mm, in the process of switching the clutch mechanism 900 to the engaged state, the fourth transmission tooth 9137 can be inserted between two adjacent third transmission teeth 9125, thereby improving the convenience and functional reliability when switching the clutch mechanism 900 to the engaged state.

[0288] The tooth top width H2 of the fourth transmission tooth 9137 may be less than or equal to 0.5 mm. If the tooth top width H2 of the fourth transmission tooth 9137 is greater than 0.5 mm, the size of the tooth top of the fourth transmission tooth 9137 will be too large. When the fourth transmission tooth 9137 is inserted between two adjacent third transmission teeth 9125, the tooth top of the fourth transmission tooth 9137 is easily abutted against the tooth top of the third transmission tooth 9125. By setting the tooth top width H2 of the fourth transmission tooth 9137 to be less than or equal to 0.5 mm, in the process of switching the clutch mechanism 900 to the engaged state, the fourth transmission tooth 9137 can be inserted between two adjacent third transmission teeth 9125, thereby improving the convenience and functional reliability of switching the clutch mechanism 900 to the engaged state.

[0289] In some other possible implementations of the present application, when the clutch mechanism 900 is in an engaged state, the sliding key 913 contacts the circumferential side wall of the second connection recess 9122, and can be configured so that when the second clutch gear 912 rotates in the first direction, the first clutch gear 911 is driven to rotate synchronously, so that the first clutch gear 911 can accelerate relative to the second clutch gear 912 in the first direction. The driving mechanism 600 in the automatic door opening and closing device 400 can be transmission-connected to the second clutch gear 912, and the second actuator 820 can be transmission-connected to the first clutch gear 911.

[0290] During the process of the automatic door opening and closing device 400 automatically opening or closing the door body, the clutch mechanism 900 is in an engaged state, the driving mechanism 600 can drive the second clutch gear 912 to rotate in the first direction, and the second clutch gear 912 can drive the first clutch gear 911 to rotate synchronously in the first direction to transmit the driving force to the second actuator 820, and the second actuator 820 is actuated to open or close the door body. When the user applies a pulling force or a pushing force to the door body, the first clutch gear 911 can accelerate the rotation in the first direction relative to the second clutch gear 912, so that the door body can be opened or closed at an accelerated speed, so that the automatic door opening and closing device 400 has the function of manually accelerating the opening or closing of the door body, thereby improving the user experience.

[0291] It should be noted that the first direction refers to the rotation direction of the second clutch gear 912 during the process of automatically opening or closing the door. The technical solution of the embodiment of the present application is described below by taking the first direction as the rotation direction of the second clutch gear 912 during the process of automatically opening the door as an example.

[0292] For example, reference Fig.36 The circumferential side wall of the second connection recess 9122 may be provided with a plurality of first ratchet teeth 9126 spaced apart from each other. A pawl 9138 may be provided on one side of the sliding key 913 facing the circumferential side wall of the second connection recess 9122. For example, the pawl 9138 may be provided on one side of the first connection portion 9132 facing the circumferential side wall of the second connection recess 9122. Fig.37 As shown, when the clutch mechanism 900 is in the disengaged state, the clutch drive assembly 920 drives the sliding key 913 to slide, so that the pawl 9138 is separated from the first ratchet tooth 9126. The user can apply a pulling force or a pushing force to the door body to manually open or close the door body.

[0293] like Fig.38 As shown, when the clutch mechanism 900 is in the engaged state, the clutch drive assembly 920 drives the sliding key 913 to slide in the opposite direction, so that the ratchet 9138 is inserted between two adjacent first ratchet teeth 9126. The driving mechanism 600 can drive the second clutch gear 912 to rotate in the first direction K. The first direction K can be as follows: Fig.38 The second clutch gear 912 drives the first clutch gear 911 to rotate in the first direction K through the sliding key 913, and the first clutch gear 911 can drive the second actuator 820 to operate to automatically open the door body. In the process of automatically opening the door body, the user can apply a pulling force to the door body, and the second actuator 820 applies a force toward the first direction K to the first clutch gear 911, so that the first clutch gear 911 can accelerate the rotation in the first direction K relative to the second clutch gear 912, so that the door body can be opened faster.

[0294] refer to Fig.39 , the first ratchet tooth 9126 may include a first tooth surface a and a second tooth surface b spaced apart in the first direction K, and the first tooth surface a is located in front of the second tooth surface b in the first direction K. The tooth surface inclination angle of the first tooth surface a may be smaller than the tooth surface inclination angle of the second tooth surface b. The pawl 9138 may include a third tooth surface c and a fourth tooth surface d spaced apart in the first direction K, and the third tooth surface c is located behind the fourth tooth surface d in the first direction K. When the pawl 9138 is inserted between two adjacent first ratchet teeth 9126, the third tooth surface c is parallel to the first tooth surface a adjacent thereto, and the fourth tooth surface d is parallel to the second tooth surface b adjacent thereto. When the second clutch gear rotates in the first direction K, the first tooth surface a pushes the third tooth surface c, so that the second clutch gear 912 can drive the first clutch gear 911 to rotate in the first direction K to automatically open the door body. When the user applies a pulling force to the door body, the first clutch gear 911 is subjected to a rotational force in the first direction K. Under the action of this rotational force, the fourth tooth surface d of the pawl 9138 slides along the second tooth surface b, so that the pawl 9138 enters between the two adjacent first ratchet teeth 9126 in front, thereby accelerating the first clutch gear 911 to rotate in the first direction relative to the second clutch gear 912, so as to manually accelerate the opening of the door body.

[0295] Exemplarily, when the clutch assembly 910 includes a second elastic member 915, the second elastic member 915 can apply a second force to the sliding key 913 to cause the first connecting portion 9132 to slide toward the circumferential side wall of the second connecting recess 9122, so that the first clutch gear 911 drives the sliding key 913 to rotate until the pawl 9138 is opposite to the portion between two adjacent first ratchet teeth 9126 and can be inserted between the two first ratchet teeth 9126. When the user stops applying pulling force to the door body, the second clutch gear 912 can continue to drive the sliding key 913 and the first clutch gear 911 to rotate in the first direction K to continue to automatically open the door body.

[0296] In some other possible implementations of the embodiments of the present application, when the clutch mechanism 900 is in the first engagement state, the sliding key 913 contacts a portion of the circumferential side wall of the second connection recess 9122, and is configured so that the first clutch gear 911 drives the second clutch gear 912 to rotate synchronously in the first direction, and the second clutch gear 912 accelerates relative to the first clutch gear 911 in the first direction. When the clutch mechanism 900 is in the second engagement state, the sliding key 913 contacts another portion of the circumferential side wall of the connection recess, and is configured so that the first clutch gear 911 drives the second clutch gear 912 to rotate synchronously in a second direction opposite to the first direction, and the second clutch gear 912 accelerates relative to the first clutch gear 911 in the second direction.

[0297] In the process of the automatic door opening and closing device 400 automatically opening or closing the door body, the clutch drive assembly 920 can drive the sliding key 913 to slide, so that the sliding key 913 contacts the partial circumferential side wall of the second connection recess 9122, so as to switch the clutch mechanism 900 to the first engagement state. The driving mechanism 600 can drive the second clutch gear 912 to rotate in the first direction, and the second clutch gear 912 can drive the first clutch gear 911 to rotate synchronously in the first direction to transmit the driving force to the second actuator 820, and the second actuator 820 is actuated to open or close the door body. When the user applies a pulling force or a pushing force to the door body, the first clutch gear 911 can accelerate the rotation in the first direction relative to the second clutch gear 912, so that the door body can be accelerated to open or close, so that the automatic door opening and closing device 400 has the function of manually accelerating the opening or closing of the door body.

[0298] The clutch drive assembly 920 can drive the sliding key 913 to slide in the opposite direction, so that the sliding key 913 contacts another part of the circumferential side wall of the second connection recess 9122, so as to switch the clutch mechanism 900 to the second engagement state. The driving mechanism 600 can drive the second clutch gear 912 to rotate in a second direction opposite to the first direction, and the second clutch gear 912 can drive the first clutch gear 911 to rotate synchronously in the second direction to transmit the driving force to the second actuator 820, and the second actuator 820 is actuated to close or open the door body. When the user applies a push or pull force to the door body, the first clutch gear 911 can accelerate the rotation in the second direction relative to the second clutch gear 912, so that the door body can be accelerated to close or open, so that the automatic door opening and closing device 400 has the function of manually accelerating the closing or opening of the door body.

[0299] It should be noted that one of the first direction and the second direction refers to the rotation direction of the second clutch gear 912 during the process of automatically opening the door body, and the other refers to the rotation direction of the second clutch gear 912 during the process of automatically closing the door body. The following takes the first direction as the rotation direction of the second clutch gear 912 during the process of automatically opening the door body and the second direction as the rotation direction of the second clutch gear 912 during the process of automatically closing the door body as an example to illustrate the technical solution of the embodiment of the present application.

[0300] For example, reference Fig.40 The circumferential side wall of the second connection recess 9122 may be provided with a plurality of spaced first ratchet teeth 9126 and a plurality of spaced second ratchet teeth 9127, and the plurality of first ratchet teeth 9126 and the plurality of second ratchet teeth 9127 are symmetrically arranged relative to the axial center plane of the second clutch gear 912. Fig.41The sliding key 913 is provided with a pawl 9138 on both sides opposite to each other in the sliding direction, and the two pawls 9138 are symmetrically arranged. For example, one pawl 9138 can be arranged on the side of the first connecting portion 9132 facing the circumferential side wall of the second connecting recess 9122, and the other pawl 9138 can be arranged on the side of the second connecting portion 9134 facing away from the first connecting portion 9132. Fig.42 and Fig.43 As shown, when the clutch mechanism 900 is in the disengaged state, the clutch drive assembly 920 drives the sliding key 913 to slide, so that the two pawls 9138 are separated from the first ratchet 9126 and the second ratchet 9127. The user can apply a pulling force or a pushing force to the door body to manually open or close the door body.

[0301] like Fig.44 and Fig.45 As shown, when the clutch mechanism 900 is in the first engagement state, the clutch drive assembly 920 drives the sliding key 913 to slide, so that one of the ratchet pawls 9138 is inserted between two adjacent first ratchet teeth 9126, and the other ratchet pawl 9138 is separated from the second ratchet teeth 9127. The driving mechanism 600 can drive the second clutch gear 912 to rotate in the first direction K, and the first direction K can be as follows: Fig.44 The second clutch gear 912 drives the first clutch gear 911 to rotate in the first direction K through the sliding key 913, and the first clutch gear 911 can drive the second actuator 820 to operate to automatically open the door body. In the process of automatically opening the door body, the user can apply a pulling force to the door body, and the second actuator 820 applies a force toward the first direction K to the first clutch gear 911, so that the first clutch gear 911 can accelerate the rotation in the first direction K relative to the second clutch gear 912, so that the door body can be opened faster.

[0302] like Fig.46 and Fig.47 As shown, when the clutch mechanism 900 is in the second engagement state, the clutch drive assembly 920 drives the sliding key 913 to slide in the opposite direction, so that one pawl 9138 is separated from the first ratchet tooth 9126, and the other pawl 9138 is inserted between two adjacent second ratchet teeth 9127. The driving mechanism 600 can drive the second clutch gear 912 to rotate in the second direction N, and the second direction N can be as follows: Fig.46The second clutch gear 912 drives the first clutch gear 911 to rotate in the second direction N through the sliding key 913, and the first clutch gear 911 can drive the second actuator 820 to operate to automatically close the door body. In the process of automatically closing the door body, the user can apply a thrust to the door body, and the second actuator 820 applies a force toward the second direction N to the first clutch gear 911, so that the first clutch gear 911 can accelerate the rotation in the second direction N relative to the second clutch gear 912, so that the door body can be closed faster.

[0303] The clutch drive assembly 920 is connected to the sliding key 913 and is used to drive the sliding key 913 to slide relative to the first clutch gear 911. In some possible implementations of the present application, Figures 18 to 27 As shown, the clutch drive assembly 920 may include a first clutch motor 921, and the first clutch motor 921 has a rotatable output shaft, and the output shaft is used to provide a rotating clutch force. It is understandable that the first clutch motor 921 can be replaced by other components that can provide a clutch force, such as a pneumatic motor or a hydraulic motor, etc., and this embodiment of the application will not be repeated.

[0304] Continue to refer Fig.48 and Fig.49 The clutch drive assembly 920 may further include a transmission member 922, which may include a third connection portion 9221 and a transmission disc 9222. The third connection portion 9221 may be inserted into the second mounting hole 9121 of the second clutch gear 912 and may rotate in the second mounting hole 9121. The third connection portion 9221 is connected to the first clutch motor 921. The transmission disc 9222 may be located in the second connection recess 9122 and connected to the third connection portion 9221. The transmission disc 9222 is configured to drive the sliding key 913 to slide along the radial direction of the first clutch gear 911 when rotating, so that the sliding key 913 abuts against or separates from the circumferential side wall of the second connection recess 9122, thereby switching the clutch mechanism 900 to an engaged state or a disengaged state. By controlling the first clutch motor 921, the timing of the clutch mechanism 900 being in an engaged state or a disengaged state can be controlled, which is conducive to increasing the functions of the automatic door opening and closing device 400 and improving the user experience.

[0305] The transmission member 922 may include a third connection portion 9221 and a transmission disc 9222, and the third connection portion 9221 may be inserted into the second mounting hole 9121. The transmission disc 9222 is located in the second connection recess 9122 and is connected to one end of the third connection portion 9221 extending into the second connection recess 9122. The other end of the third connection portion 9221 is connected to the first clutch motor 921, and the first clutch motor 921 may drive the third connection portion 9221 to drive the transmission disc 9222 to rotate.

[0306] Exemplarily, the clutch drive assembly 920 may further include at least one clutch drive gear, which is rotatably mounted on the housing 100, and the at least one clutch drive gear connects the first clutch motor 921 and the clutch assembly 910, and the first clutch motor 921 drives the clutch assembly 910 to operate via the at least one clutch drive gear. Fig.18 , Fig.19 and Fig.21 As shown, at least one clutch driving gear may include a first clutch driving gear 923, and the first clutch driving gear 923 may be connected to an end of the third connecting portion 9221 away from the transmission plate 9222. The first clutch motor 921 may be in transmission connection with the first clutch driving gear 923 to drive the first clutch driving gear 923 to rotate, thereby driving the third connecting portion 9221 to rotate.

[0307] In some possible implementations of the present application, the output shaft of the first clutch motor 921 may be arranged parallel to the axis of the first clutch gear 911. At least one clutch drive gear may further include a second clutch drive gear 924, which may be connected to the output shaft of the first clutch motor 921 and meshed with the first clutch drive gear 923. The first clutch motor 921 may transmit the clutch force to the third connecting portion 9221 through the second clutch drive gear 924 and the first clutch drive gear 923. The first clutch drive gear 923 and the second clutch drive gear 924 have high transmission efficiency and transmission accuracy, which can reduce the power requirement for the first clutch motor 921, thereby reducing the cost of the first clutch motor 921, thereby reducing the component cost of the clutch mechanism 900, and can enhance the stability during transmission.

[0308] Exemplarily, a portion of the circumference of the second clutch drive gear 924 may be provided with a plurality of spaced fifth transmission teeth 9241. That is, the second clutch drive gear 924 may be an incomplete gear. When the plurality of fifth transmission teeth 9241 are meshed with the first clutch drive gear 923, the drive mechanism 600 may drive the first clutch drive gear 923 to rotate through the second clutch drive gear 924, so that the first clutch drive gear 923 drives the third connection portion 9221 to rotate, so that the transmission plate 9222 drives the sliding key 913 to separate or abut the circumferential side wall of the second connection recess 9122, so as to switch the clutch mechanism 900 to a separated state or an engaged state. After the clutch mechanism 900 is switched to a separated state or an engaged state, the fifth transmission teeth 9241 of the second clutch drive gear 924 disengage from the first clutch drive gear 923 to prevent the second clutch gear 912 from restricting the transmission member 922 and the sliding key 913 through the first clutch gear 911. When the first clutch gear 911 rotates under the action of the driving mechanism 600 or the second actuator 820 , the transmission member 922 and the sliding key 913 can rotate along with the first clutch gear 911 , thereby improving the functional reliability of the clutch mechanism 900 .

[0309] In some other possible implementations of the embodiments of the present application, refer to Fig.17 , the output shaft of the first clutch motor 921 can be perpendicular to the axis of the first clutch gear 911. The at least one clutch drive gear also includes a third clutch drive gear 925. The clutch drive assembly 920 can also include a second worm gear 927, a second worm 926 and a third transmission rack 928. The second worm 926 is coaxially connected to the output shaft of the first clutch motor 921. The second worm gear 927 is rotatably mounted on the housing 100, and the second worm gear 927 is meshed with the second worm 926. The third clutch drive gear 925 is coaxially arranged with the second worm gear 927 and rotatably mounted on the housing 100. The third transmission rack 928 is provided with a plurality of sixth transmission teeth 9281 and a plurality of seventh transmission teeth 9282. The plurality of sixth transmission teeth 9281 are arranged at intervals along the extension direction of the third transmission rack 928, and are used to mesh with the third clutch drive gear 925. A plurality of seventh transmission teeth 9282 are arranged at intervals along the extension direction of the third transmission rack 928 for meshing with the first clutch drive gear 923 .

[0310] When the output shaft of the first clutch motor 921 rotates, it drives the second worm 926 to rotate, and the second worm 926 drives the second worm wheel 927 and the third clutch drive gear 925 to rotate. The third clutch drive gear 925 drives the third transmission rack 928 to move through multiple sixth transmission teeth 9281. The multiple seventh transmission teeth 9282 of the third transmission rack 928 drive the first clutch drive gear 923 to rotate, and the first clutch drive gear 923 drives the third connecting part 9221 to rotate, so that the transmission disk 9222 drives the sliding key 913 to separate or abut the circumferential side wall of the second connecting recess 9122 to switch the clutch mechanism 900 to a disengaged state or an engaged state.

[0311] After the clutch mechanism 900 switches to the disengaged state or the engaged state, the seventh transmission tooth 9282 of the third transmission rack 928 disengages from the first clutch drive gear 923 to prevent the second clutch gear 912 from restricting the transmission member 922 and the sliding key 913 through the first clutch gear 911. When the first clutch gear 911 rotates under the action of the drive mechanism 600 or the second actuator 820, the transmission member 922 and the sliding key 913 can rotate with the first clutch gear 911, thereby improving the state reliability of the clutch mechanism 900.

[0312] The transmission disk 9222 can also be provided with a second connecting through hole 9223, which passes through the transmission disk 9222 and the third connecting part 9221. The second connecting through hole 9223 can be used for the third rotating shaft 914 to pass through, so as to support the third connecting part 9221 and the second clutch gear 912, so that the third connecting part 9221 and the second clutch gear 912 can rotate relative to the box body 100.

[0313] One of the transmission plate 9222 and the sliding key 913 may be provided with a guide recess 9224, and the other may be provided with a guide protrusion 9139, and the guide protrusion 9139 is slidably disposed in the guide recess 9224. Figures 18 to 27 ,as well as Fig.48 and Fig.49 As shown, the guide recessed portion 9224 can be arranged on the transmission disk 9222, and the guide protrusion 9139 can be arranged on the first sliding portion 9131 of the sliding key 913. It can be understood that the guide recessed portion 9224 can also be arranged on the sliding key 913, and the guide protrusion 9139 can also be arranged on the transmission disk 9222, and the embodiment of the present application will not be repeated. The following takes the guide recessed portion 9224 being arranged on the transmission disk 9222 and the guide protrusion 9139 being arranged on the sliding key 913 as an example to illustrate the technical solution of the embodiment of the present application.

[0314] like Fig.26As shown, when the clutch mechanism 900 is in the engaged state, the first clutch motor 921 drives the third connection part 9221 and the transmission plate 9222 to rotate clockwise, and the transmission plate 9222 drives the first connection part 9132 of the sliding key 913 to slide toward the circumferential side wall of the second connection recess 9122 through the guide recess 9224 and the guide protrusion 9139, so that the first connection part 9132 abuts against the circumferential side wall of the second connection recess 9122, so that the first clutch gear 911 is connected to the second clutch gear 912 through the sliding key 913. The driving mechanism 600 can drive the second clutch gear 912 and the first clutch gear 911 to rotate synchronously, and transmit the driving force to the second actuator 820 to automatically open or close the door body.

[0315] like Fig. 27 As shown, when the clutch mechanism 900 is in the disengaged state, the first clutch motor 921 drives the third connection part 9221 and the transmission plate 9222 to rotate counterclockwise, and the transmission plate 9222 drives the first connection part 9132 of the sliding key 913 to slide away from the circumferential side wall of the second connection recess part 9122 through the guide recess part 9224 and the guide protrusion 9139, so that the first connection part 9132 is separated from the circumferential side wall of the second connection recess part 9122, so that the first clutch gear 911 and the second clutch gear 912 can rotate relative to each other. The driving force provided by the drive mechanism 600 will not be transmitted to the second actuator 820, and the reverse load generated by the second actuator 820 will not be transmitted to the drive mechanism 600, so that the door body can be manually opened or closed. The refrigerator of the embodiment of the present application is provided with a clutch mechanism 900, and the timing of the clutch mechanism 900 being in the engaged state or the disengaged state can be controlled by controlling the first clutch motor 921, which is conducive to increasing the function of the automatic door opening and closing device 400 and improving the user experience.

[0316] Continue to refer Fig.50 , the guide recess 9224 can be arranged on the transmission disk 9222, and the guide recess 9224 can include a fifth side wall 9225 and a sixth side wall 9226 which are arranged opposite to each other in the radial direction of the transmission disk 9222, and the fifth side wall 9225 is farther away from the axis of the transmission disk 9222 than the sixth side wall 9226. Along the rotation direction of the transmission disk 9222 when the clutch mechanism 900 switches from the engaged state to the disengaged state, the distance between the fifth side wall 9225 and the axis of the transmission disk 9222 gradually decreases. The guide protrusion 9139 is arranged on the sliding key 913, and the guide protrusion 9139 abuts against the fifth side wall 9225. Fig.26 As shown, when the clutch mechanism 900 is in the engaged state, the guide protrusion 9139 abuts against the portion of the fifth side wall 9225 close to the axis of the transmission plate 9222. Fig. 27As shown, when the clutch mechanism 900 switches from the engaged state to the disengaged state, the guide plate moves to the position shown in FIG. Fig. 27 Rotate in the clockwise direction as indicated by the dotted arrow, and the fifth side wall 9225 pushes the guide protrusion 9139, so that the guide protrusion 9139 drives the sliding key 913 to slide along the radial direction of the first clutch gear 911. The guide protrusion 9139 drives the sliding key 913 to slide toward the axis close to the transmission disk 9222, thereby separating the sliding key 913 from the circumferential side wall of the second connecting recess 9122, so that the clutch mechanism 900 is in a separated state.

[0317] like Fig.26 As shown, when the clutch mechanism 900 switches from the disengaged state to the engaged state, the guide plate moves to the position shown in FIG. Fig.26 As shown in the counterclockwise rotation, the fifth side wall 9225 pushes the guide protrusion 9139, so that the guide protrusion 9139 drives the sliding key 913 to slide radially along the first clutch gear 911, and the guide protrusion 9139 drives the sliding key 913 to slide away from the axis of the transmission disk 9222, so that the sliding key 913 abuts against the circumferential side wall of the second connecting recess 9122, so that the clutch mechanism 900 is in an engaged state.

[0318] The fifth side wall 9225 may be provided with an abutting recess 9227, and the guide protrusion 9139 may be located in the abutting recess 9227 when the clutch mechanism 900 is in an engaged state or a disengaged state. When the first clutch gear 911 drives the sliding key 913 to rotate, the side wall of the abutting recess 9227 may block the guide protrusion 9139, so that the transmission member 922 may rotate along with the sliding key 913 and the first clutch gear 911, thereby ensuring the relative position between the transmission member 922 and the sliding key 913, and improving the functional reliability of the clutch mechanism 900.

[0319] In addition, since the side wall of the abutment recess 9227 can block the guide protrusion 9139, when the state of the clutch mechanism 900 is switched, the first clutch motor 921 needs a torque exceeding a preset value to enable the guide protrusion 9139 to leave the abutment recess 9227, thereby preventing the first clutch motor 921 from accidentally rotating and causing the state of the clutch mechanism 900 to change, thereby improving the functional reliability of the clutch mechanism 900.

[0320] refer to Fig.50, the surface of the guide protrusion 9139 facing the side of the abutting recess 9227 and the surface of the side wall of the abutting recess 9227 can both be the first arc surface e, and the first arc surface e can be bent toward the axis of the transmission disk 9222. The edge of the abutting recess 9227 and the first side wall can be smoothly connected by the second arc surface f, and the second arc surface f faces away from the axis of the transmission disk 9222. In this way, when the clutch mechanism 900 is switched to the engaged state or the disengaged state, the guide protrusion 9139 can smoothly enter and exit the abutting recess 9227 under the drive of the first clutch motor 921, preventing the guide protrusion 9139 from colliding with the side wall of the abutting recess 9227, thereby preventing the sliding key 913 and the transmission disk 9222 from being damaged.

[0321] like Fig.26 and Fig. 27 As shown, when the clutch assembly 910 includes a second elastic member 915, the second elastic member 915 can apply a second force to the sliding key 913 to cause the first connecting portion 9132 to slide toward the circumferential side wall of the second connecting recess 9122, so that the guide protrusion 9139 is always in contact with the fifth side wall 9225 of the guide recess 9224, thereby improving the accuracy of the relative position between the sliding key 913 and the transmission disk 9222, thereby improving the functional reliability of the clutch mechanism 900.

[0322] In some possible implementations of the present application, such as Fig.50 As shown, the sixth side wall 9226 may not contact the guide protrusion 9139. For example, the sixth side wall 9226 may be a third arc surface, and the distance between the third arc surface and the fifth side wall 9225 may gradually decrease along the rotation direction of the transmission disk 9222 when the clutch mechanism 900 switches from the engaged state to the disengaged state. When the transmission disk 9222 rotates, the guide protrusion 9139 always abuts against the fifth side wall 9225 under the action of the second elastic member 915, and does not contact the sixth side wall 9226, which can prevent the sixth side wall 9226 from affecting the position of the sliding key 913.

[0323] In some other possible implementations of the present application, Fig.51 As shown, the sixth side wall 9226 can be arranged parallel to the fifth side wall 9225, and the sixth side wall 9226 and the fifth side wall 9225 both limit the guide protrusion 9139, so that the guide protrusion 9139 slides between the fifth side wall 9225 and the sixth side wall 9226, and the movement trajectory of the sliding key 913 is limited by the fifth side wall 9225 and the sixth side wall 9226, thereby improving the positioning accuracy of the sliding key 913.

[0324] refer to Fig. 22At least one second guide portion 9116 may be provided on the side of the first clutch gear 911 facing the second clutch gear 912, and the second guide portion 9116 may have a second guide surface 9117 facing the transmission disk 9222, and the second guide surface 9117 abuts against the outer side surface of the transmission disk 9222. When the transmission disk 9222 rotates, the second guide surface 9117 can guide the transmission disk 9222, thereby improving the stability of the transmission disk 9222 when rotating. Exemplarily, the second guide surface 9117 may be an arc surface, and the center of the arc surface may be located on the axis of the transmission disk 9222.

[0325] For example, the number of the second guide portion 9116 can be one. Fig. 22 As shown, the number of the second guide portions 9116 may be two, and the two second guide portions 9116 may be respectively disposed on both sides of the transmission disk 9222 to guide the transmission disk 9222 from both sides of the transmission disk 9222, thereby further improving the stability of the transmission disk 9222 during rotation.

[0326] In some possible implementations of the present application, one of the at least one clutch drive gears may be coaxially connected to an adjustment shaft 9251, and the adjustment shaft 9251 is used to be manually rotated so that the clutch assembly 910 disconnects the drive mechanism 600 and the actuator 800. Fig.52 , the adjustment shaft 9251 can be coaxially arranged with one of the clutch drive gears and fixedly connected. For example, the adjustment shaft 9251 can be coaxially arranged with the third clutch drive gear 925 ( Fig.52 9251 and the actuator 800 are connected to each other (not shown in the figure), and are coaxially arranged and fixedly connected to the third clutch drive gear 925. When the first clutch motor 921 is in the engaged state of the clutch mechanism 900, that is, when the clutch assembly 910 causes a fault in connecting the drive mechanism 600 and the actuator 800, it will cause a large pulling force or pushing force to be applied when manually opening or closing the door body, or cause the door body to be unable to be manually opened or closed, affecting the normal use of the refrigerator. When the above-mentioned fault occurs, the user or maintenance personnel can manually rotate the adjustment shaft 9251 to drive the clutch drive gear to rotate through the adjustment shaft 9251, and the clutch drive gear drives the clutch assembly 910 to disconnect the drive mechanism 600 and the actuator 800, that is, manually switch the clutch mechanism 900 to the separated state, so that the door body can be manually opened or closed to perform a temporary fault repair on the refrigerator.

[0327] When the automatic door opening and closing device 400 includes a housing 500, the clutch assembly 910, the first clutch motor 921 and the clutch driving gear are all located in the first accommodating chamber of the housing 500. The housing 500 may be provided with a third connecting through hole 525. The adjustment shaft 9251 may be inserted into the third connecting through hole 525 and extend out of the housing 500 through the third connecting through hole 525. The user or maintenance personnel may manually rotate the portion of the adjustment shaft 9251 extending out of the housing 500 without disassembling the housing 500, thereby improving the convenience of operation when temporarily repairing a fault.

[0328] In some possible implementations of the embodiments of the present application, an adjustment recess may be provided at one end of the adjustment shaft 9251 extending outside the housing 500, and the adjustment recess is used for a rotating tool. When the user or maintenance personnel rotates the adjustment shaft 9251, a rotating tool such as a wrench or a screwdriver may be used. When using a rotating tool, the rotating tool may be inserted into the adjustment recess to facilitate applying a rotating force to the adjustment shaft 9251, thereby improving the convenience of rotating the adjustment shaft 9251. Exemplarily, the adjustment recess may be a straight groove or a cross groove, or may be other shapes, which will not be described in detail in the embodiments of the present application.

[0329] In some other possible implementations of the present application, the clutch drive assembly 920 may further include an adjustment knob 9252, which may be connected to one end of the adjustment shaft 9251 located outside the housing 500. A user or maintenance personnel may rotate the adjustment knob to drive the adjustment shaft 9251 to rotate, so as to adjust the state of the clutch mechanism 900, thereby improving the convenience of rotating the adjustment shaft 9251. Exemplarily, the adjustment knob 9252 may be a disc-shaped structure or a triangular plate-shaped structure, or may be other shapes, which will not be described in detail in the present application.

[0330] A plurality of rotating protrusions 9253 may be provided on the circumferential side of the adjusting knob 9252. The rotating protrusions 9253 may increase the friction between the user's or maintenance personnel's hand or rotating tool and the adjusting knob 9252, thereby preventing the technical problem of being unable to rotate the adjusting knob 9252 due to slippage between the hand or rotating tool and the adjusting knob 9252.

[0331] The housing 500 is provided with a third connecting through hole 525 and a direction mark 526 may be provided on a side facing away from the first accommodating chamber, and the direction mark 526 is used to indicate the rotation direction of the clutch driving gear when the clutch assembly 910 separates the driving mechanism 600 and the actuator 800. The user or maintenance personnel can rotate the adjustment shaft 9251 in the direction indicated by the direction mark 526, which improves the convenience of temporarily repairing the fault.

[0332] In some other possible implementations of the embodiments of the present application, refer to Fig.53 , Fig.54 and Fig.55 , the first clutch gear 911 or the second clutch gear 912 may be provided with a second sliding through hole 9118 along its radial direction. The sliding key 913 may be provided with a pushing protrusion 930, and the pushing protrusion 930 may be penetrated in the second sliding through hole 9118 and extend out of the second sliding through hole 9118. The clutch drive assembly 920 may include an electromagnet 932 and a third elastic member 931. The electromagnet 932 abuts against the portion of the pushing protrusion 930 extending out of the second sliding through hole 9118 to push the protrusion 930, so that the sliding key 913 abuts against or separates from the circumferential side wall of the second connecting recess 9122, that is, the clutch mechanism 900 is in an engaged state or a disengaged state. The third elastic member 931 is connected to the sliding key 913 and is configured to apply a third force to the sliding key 913 to separate or abut the sliding key 913 from the circumferential side wall of the second connecting recess 9122, that is, to make the clutch mechanism 900 in a separated state or an engaged state.

[0333] The refrigerator of the embodiment of the present application is provided with a sliding key 913, an electromagnet 932 and a third elastic member 931, and the sliding key 913 is slidably connected with the first clutch gear 911. The electromagnet 932 abuts against the sliding key 913 to push the sliding key 913 to slide relative to the first clutch gear 911, so that the sliding key 913 abuts against or separates from the circumferential side wall of the second connection recess 9122, thereby connecting or disconnecting the sliding key 913 from the second clutch gear 912. The third elastic member 931 is connected to the sliding key 913 and applies a third force to the sliding key 913, so that the sliding key 913 slides in the opposite direction relative to the first clutch gear 911, so that the sliding key 913 separates or abuts from the circumferential side wall of the second connection recess 9122, thereby disconnecting or connecting the sliding key 913 from the second clutch gear 912. When the clutch mechanism 900 is in the first state, the electromagnet 932 pushes the sliding key 913 to connect or disconnect with the second clutch gear 912. When the clutch mechanism 900 is in the second state, the third elastic member 931 pushes the sliding key 913 to automatically separate or connect with the second clutch gear 912. The state of the clutch mechanism 900 can be switched by controlling the electromagnet 932, so that the timing of connecting or disconnecting the driving mechanism 600 and the actuator 800 can be arbitrarily controlled, which is conducive to increasing the functions of the automatic door opening and closing device 400 and improving the user experience.

[0334] Compared with driving the sliding key 913 to slide through the first clutch motor 921, the embodiment of the present application drives the sliding key 913 to slide through the electromagnet 932. The cost of the electromagnet 932 is relatively low, thereby reducing the parts cost of the clutch mechanism 900; and there is no need to set the transmission member 922 in the clutch assembly 910, thereby reducing the number of parts in the clutch mechanism 900, simplifying the mechanical structure of the clutch mechanism 900, and reducing the assembly difficulty of the clutch mechanism 900.

[0335] For example, Fig.53 , Fig.54 , Fig.55 , Fig.56 and Fig.57 As shown, the electromagnet 932 may have a retractable push rod 9321, and the push rod 9321 may abut against the portion of the push protrusion 930 extending out of the second sliding through hole 9118. The third elastic member 931 may be connected to the sliding key 913, and is configured to apply a third force to the sliding key 913, and the direction of the third force is opposite to the extension direction of the push rod 9321. When the clutch mechanism 900 is in the first state, the push rod 9321 extends, and the push rod 9321 pushes the push protrusion 930 to slide in the second sliding through hole 9118, so that the sliding key 913 abuts against or separates from the circumferential side wall of the second connecting recess 9122. When the clutch mechanism 900 is in the second state, the push rod 9321 retracts, and under the action of the second force, the push protrusion 930 slides in the second sliding through hole 9118 in the opposite direction, so that the sliding key 913 separates from or abuts against the circumferential side wall of the second connecting recess 9122. That is, the thrust applied by the push rod 9321 of the electromagnet 932 to the sliding key 913 is opposite to the third force applied by the third elastic member 931 to the sliding key 913. Under the action of the thrust and the third force, the sliding key 913 is separated from or connected to the second clutch gear 912, so that the clutch mechanism 900 is switched between the separated state and the engaged state.

[0336] One of the first state and the second state may be an engaged state, and the other may be a separated state. The following takes the first state as an engaged state and the second state as a separated state as an example to illustrate the technical solution of the embodiment of the present application.

[0337] The push protrusion 930 is disposed on the sliding key 913 and is used to abut against the push rod 9321 of the electromagnet 932. Fig.55 and Fig.57 As shown, the push protrusion 930 can be connected to the second sliding portion 9133 of the sliding key 913. It can be understood that the push protrusion 930 can also be set at other positions of the sliding key 913, and this embodiment of the present application will not be repeated.

[0338] The second sliding through hole 9118 may be provided on the first clutch gear 911 or the second clutch gear 912 for the pushing protrusion 930 to pass through. Fig.54 and Fig.57As shown, the second sliding through hole 9118 can be provided on the first clutch gear 911. The second sliding through hole 9118 can be communicated with the fifth sliding recess 9113. When the second sliding portion 9133 is slidably disposed in the fifth sliding recess 9113, the pushing protrusion 930 can be slidably disposed in the second sliding through hole 9118 and extend out of the first clutch gear 911 through the second sliding through hole 9118.

[0339] The third elastic member 931 is connected to the sliding key 913, and is used to apply a third force to the sliding key 913. Exemplarily, the third elastic member 931 can be a third compression spring. The third compression spring has a larger deformation amount, and can provide a larger third force to the sliding key. The third compression spring can be located in the fourth sliding recess 9112. One end of the third compression spring can abut against the second side wall of the fourth sliding recess 9112, and the second end of the third compression spring can abut against the first sliding portion 9131 to apply a third force horizontally to the right to the first sliding portion 9131.

[0340] For example, Fig.57 As shown, the third compression spring may also be located in the fifth sliding recess 9113. One end of the third compression spring may abut against the third side wall of the fifth sliding recess 9113, and the other end of the third compression spring may abut against the second sliding portion 9133. The third compression spring applies a third horizontal force to the right to the second sliding portion 9133.

[0341] The third elastic member 931 may also be a third tension spring. For example, the third tension spring may be located in the fourth sliding recess 9112, one end of the third tension spring may be connected to the first side wall of the fourth sliding recess 9112, and the other end of the third tension spring may be connected to the first sliding portion 9131 to apply a third horizontal force to the first sliding portion 9131.

[0342] Exemplarily, the third tension spring can be located in the fifth sliding recess 9113, one end of the third tension spring can be connected to the fourth side wall of the fifth sliding recess 9113, and the second end of the third tension spring can be connected to the second sliding portion 9133 to apply a third horizontal force to the right to the second sliding portion 9133.

[0343] Continue to refer Fig.58The clutch drive assembly 920 may further include a first pusher 933, which may be connected to the push rod 9321 of the electromagnet 932 and abut against the push protrusion 930. Exemplarily, the first pusher 933 may include a second connecting plate 9331 and a third connecting plate 9332. The second connecting plate 9331 may be perpendicular to the push rod 9321 of the electromagnet 932 and connected to the push rod 9321. The third connecting plate 9332 may be perpendicular to the second connecting plate 9331. The third connecting plate 9332 has a first end and a second end opposite to each other, the first end of the third connecting plate 9332 may be connected to the second connecting plate 9331, and the second end of the third connecting plate 9332 is provided with a first pushing surface 9333. The first pushing surface 9333 is used to abut against the push protrusion 930. The first pusher 933 is connected to the push rod 9321 of the electromagnet 932 through the third connecting plate 9332. The third connecting plate 9332 and the push rod 9321 have a large contact area, which improves the connection strength between the first pusher 933 and the push rod 9321. In addition, the distance between the electromagnet 932 and the clutch assembly 910 can be adjusted by adjusting the length of the second connecting plate 9331, which is conducive to optimizing the structural layout of the clutch mechanism 900.

[0344] By way of example, a clamping recess 9334 may be provided on one side of the second connecting plate 9331 facing away from the third connecting plate 9332, and the clamping recess 9334 is clamped on the push rod 9321, thereby improving the convenience of connection between the second connecting plate 9331 and the push rod 9321. By way of example, the clamping recess 9334 has a clamping opening 9335 facing the push rod 9321. Along the direction parallel to the third connecting plate 9332, the width of the clamping opening 9335 may be smaller than the maximum width of the clamping recess 9334, and smaller than the width of the push rod 9321. When the push rod 9321 is clamped in the clamping recess 9334, the push rod 9321 is first aligned with the clamping opening 9335, and then pressure is applied to the push rod 9321, so that the push rod 9321 squeezes the part of the second connecting plate 9331 located on both sides of the clamping opening 9335, so that the part of the second connecting plate 9331 is deformed, so that the push rod 9321 can enter the clamping recess 9334. When the push rod 9321 is located in the clamping recess 9334, the part of the second connecting plate 9331 located on both sides of the clamping opening 9335 recovers the deformation. Since the width of the clamping opening 9335 is smaller than the width of the push rod 9321, the part of the second connecting plate 9331 located on both sides of the clamping opening 9335 can limit and fix the push rod 9321 to prevent the push rod 9321 from coming out of the clamping recess 9334, thereby improving the connection reliability between the first push member 933 and the push rod 9321.

[0345] like Fig.59As shown, the first push member 933 may be provided with a first push surface 9333 that abuts against the push protrusion 930. For example, the first push surface 9333 may be provided on the side of the third connecting plate 9332 that faces away from the second connecting plate 9331. The first push surface 9333 may be a first arc surface. The center of the first arc surface may be located on the axis of the first clutch gear 911. When the clutch mechanism 900 is in an engaged state and a disengaged state, the first push surface 9333 always abuts against the push protrusion 930. When the driving mechanism 600 drives the second clutch gear 912, the sliding key 913 and the first clutch gear 911 to rotate synchronously, since the first push surface 9333 is a first arc surface, the push protrusion 930 of the sliding key 913 can slide along the first arc surface, which can prevent the first push member 933 and the electromagnet 932 from affecting the rotation of the second clutch gear 912, the sliding key 913 and the first clutch gear 911. In addition, the first arc surface can also limit and guide the pushing protrusion 930 to improve the relative position accuracy between the sliding key 913 and the first clutch gear 911, thereby improving the functional reliability of the clutch mechanism 900.

[0346] Exemplarily, the center angle α of the first arc surface can be less than or equal to 180°. For example, the center angle α of the arc surface can be 30°, 45°, 60°, 75°, 90°, 105°, 120°, 135°, 150°, 165° or 180°. If the center angle α of the arc surface is greater than 180°, when the driving mechanism 600 drives the second clutch gear 912, the sliding key 913 and the first clutch gear 911 to rotate synchronously, so that the protrusion 930 is pushed to the two side edges of the first arc surface, the first arc surface cannot apply a thrust to the protrusion 930, so that the sliding key 913 is separated from the circumferential side wall of the second connection recess 9122 under the action of the third elastic member 931, resulting in the clutch mechanism 900 being unable to remain in the engaged state. Therefore, by setting the central angle α of the first arc surface to be less than or equal to 180°, when the clutch mechanism 900 switches to the engaged state, the clutch mechanism 900 can be kept in the engaged state, thereby improving the functional reliability of the clutch mechanism 900.

[0347] refer to Fig.60 and Fig.61, the push rod 9321 of the electromagnet 932 is retracted to the right, and the push rod 9321 drives the first push member 933 to move to the right. The third elastic member 931 applies a third force to the right to the second sliding portion 9133, and the second sliding portion 9133 slides to the right in the fourth sliding recess 9112 for sliding. The second sliding portion 9133 drives the pushing protrusion 930 to move to the right, so that the pushing protrusion 930 abuts against the pushing surface of the first push member 933. At the same time, the second sliding portion 9133 drives the second connecting portion 9134 and the first connecting portion 9132 to slide to the right, so that the first connecting portion 9132 is separated from the circumferential side wall of the second connecting recess 9122, thereby switching the clutch mechanism 900 to a separated state.

[0348] refer to Fig.62 and Fig.63 , the push rod 9321 of the electromagnet 932 extends to the left, and the push rod 9321 pushes the first push member 933 to move to the left. The push surface of the first push member 933 pushes the push protrusion 930 to move to the left by overcoming the third force provided by the third elastic member 931. The push protrusion 930 drives the second sliding part 9133 to slide to the left in the fourth sliding recess 9112 for sliding. The second sliding part 9133 drives the second connecting part 9134 and the first connecting part 9132 to slide to the left, so that the first connecting part 9132 abuts against the circumferential side wall of the second connecting recess 9122, thereby switching the clutch mechanism 900 to the engaged state.

[0349] In some possible implementations of the present application, reference is made to Fig.64 and Fig.65 , the actuator 800 may include a first actuator 810 and a second actuator 820. The clutch mechanism 900 may include a clutch drive assembly 920 and two clutch assemblies 910. The two clutch assemblies 910 are respectively a first clutch assembly 940 and a second clutch assembly 950. The first clutch assembly 940 is disposed between the drive mechanism 600 and the first actuator 810, and is configured to connect the drive mechanism 600 and the first actuator 810 when in an engaged state, and disconnect the drive mechanism 600 and the first actuator 810 when in a disengaged state. The second clutch assembly 950 is disposed between the drive mechanism 600 and the second actuator 820, and is configured to connect the drive mechanism 600 and the second actuator 820 when in an engaged state, and disconnect the drive mechanism 600 and the second actuator 820 when in a disengaged state. With regard to the specific structures of the first clutch assembly 940 and the second clutch assembly 950, reference may be made to the above description, and the embodiments of the present application will not be repeated here.

[0350] The clutch drive assembly 920 may include a second pusher 960 and a second clutch motor 970. The first end of the second pusher 960 may be provided with a first action portion 961, and the first action portion 961 is used to control the first clutch assembly 940 to be in an engaged state or a disengaged state. The second end of the second pusher 960 may be provided with a second action portion 962, and the second action portion 962 is used to control the second clutch assembly 950 to be in an engaged state or a disengaged state. The second clutch motor 970 is connected to the second pusher 960. When the clutch mechanism 900 is in the third state, the second clutch motor 970 drives the second pusher 960 to move, so that the first action portion 961 controls the first clutch assembly 940 to be in an engaged state, and the second action portion 962 controls the second clutch assembly 950 to be in a disengaged state. When the clutch mechanism 900 is in the second state, the second clutch motor 970 drives the second pusher 960 to move in the opposite direction, so that the first action portion 961 controls the first clutch assembly 940 to be in a disengaged state, and the second action portion 962 controls the second clutch assembly 950 to be in an engaged state.

[0351] When opening the door, the clutch mechanism 900 can be placed in the third state, so that the first clutch assembly 940 is in the engaged state and the second clutch assembly 950 is in the disengaged state. The driving mechanism 600 can drive the first actuator 810 to move through the first clutch assembly 940 to overcome the resistance in the initial stage and push the door to open. Then, the clutch mechanism 900 is placed in the fourth state, so that the first clutch assembly 940 is in the disengaged state and the second clutch assembly 950 is in the engaged state. The driving mechanism 600 can drive the second actuator 820 to move through the second clutch assembly 950 to open the door to a larger angle.

[0352] When closing the door, the clutch mechanism 900 can be in the fourth state, so that the first clutch assembly 940 is in a disengaged state and the second clutch assembly 950 is in an engaged state. The driving mechanism 600 can drive the second actuator 820 to operate through the first clutch assembly 940 to close the door.

[0353] It can be seen from the above process of opening or closing the door body that by setting the clutch mechanism 900, the driving mechanism 600 is connected to the first actuator 810 and the second actuator 820 respectively, so that in the process of automatic opening and closing of the door, the driving mechanism 600 can drive the first actuator 810 and the second actuator 820 respectively, so that the door body can be opened and closed through the mutual cooperation of the first actuator 810 and the second actuator 820, so that the first actuator 810 and the second actuator 820 can share the same driving mechanism 600, thereby reducing the number of components in the automatic door opening and closing device 400, reducing the parts cost of the automatic door opening and closing device 400, and facilitating the miniaturization of the automatic door opening and closing device 400.

[0354] For example, reference Fig.65 , the second pusher 960 may be provided with an abutment portion 963. The first end of the second pusher 960 is provided with a first action portion 961, and the first action portion 961 is used to control the first clutch assembly 940 to be in an engaged state or a disengaged state. The second end of the second pusher 960 may be provided with a second action portion 962, and the second action portion 962 is used to control the second clutch assembly 950 to be in an engaged state or a disengaged state. The clutch drive assembly 920 may also include a clutch cam 971, the clutch cam 971 is connected to the second clutch motor 970, and the clutch cam 971 abuts against the abutment portion 963.

[0355] like Fig.66 As shown, when the clutch mechanism 900 is in the third state, the second clutch motor 970 drives the clutch cam 971 to rotate, and the clutch cam 971 pushes the abutment portion 963, so that the first action portion 961 acts on the first clutch assembly 940, and the first clutch assembly 940 connects the drive mechanism 600 and the first actuator 810. At the same time, the second action portion 962 can also act on the second clutch assembly 950, and the second clutch assembly 950 disconnects the drive mechanism 600 and the second actuator 820.

[0356] like Fig.67 As shown, when the clutch mechanism 900 is in the fourth state, the second clutch motor 970 drives the clutch cam 971 to rotate in the opposite direction, and the clutch cam 971 pushes the abutment portion 963 in the opposite direction, so that the second action portion 962 acts on the second clutch assembly 950, and the second clutch assembly 950 connects the drive mechanism 600 and the second actuator 820. At the same time, the first action portion 961 can also act on the first clutch assembly 940, and the first clutch assembly 940 disconnects the drive mechanism 600 and the first actuator 810.

[0357] Exemplarily, the output shaft of the second clutch motor 970 can be arranged along a direction perpendicular to the connecting line of the first clutch assembly 940 and the second clutch assembly 950. The clutch cam 971 can be connected to the output shaft of the second clutch motor 970. The abutment portion 963 is provided with an abutment surface facing the clutch cam 971, and the abutment surface abuts against the clutch cam 971. When the second clutch motor 970 drives the clutch cam 971 to rotate, the clutch cam 971 pushes the abutment surface to make the second pusher 960 translate in the direction of the connecting line of the first clutch assembly 940 and the second clutch assembly 950. In this way, the clutch cam 971 can be driven to rotate by the second clutch motor 970, and the clutch cam 971 pushes the abutment surface of the abutment portion 963 to make the second pusher 960 translate, so that the first action portion 961 acts on the first clutch assembly 940, or the second action portion 962 acts on the second clutch assembly 950. The states of the first clutch assembly 940 and the second clutch assembly 950 can be switched by the same second clutch drive motor 610 , thereby reducing the number of components in the clutch mechanism 900 and lowering the cost of the clutch mechanism 900 .

[0358] like Fig.65 As shown, the second pusher 960 may include a push body 964. Along the direction from the first clutch assembly 940 to the second clutch assembly 950, the extended body may include a fourth connecting portion 965, abutting portion 963 and a fifth connecting portion 966 connected in sequence. The end of the fourth connecting portion 965 away from the abutting portion 963 may be provided with a first action portion 961, and the end of the fifth connecting portion 966 away from the abutting portion 963 may be provided with a second action portion 962. The abutting portion 963 is a bent structure facing the clutch cam 971, and the bent structure is covered on the clutch cam 971. By setting the abutting portion 963 as a bent structure covered on the clutch cam 971, the clutch cam 971 can be protected to extend the service life of the clutch mechanism 900.

[0359] The second pusher 960 may further include a first reinforcing plate 967, which connects the bending structure and the fourth connecting portion 965. The first reinforcing plate 967 can increase the connection strength between the bending structure and the fourth connecting portion 965, thereby improving the structural reliability of the second pusher 960.

[0360] The second pusher 960 may further include a second reinforcing plate 968, which connects the bending structure and the fifth connecting portion 966. The second reinforcing plate 968 can increase the connection strength between the bending structure and the fifth connecting portion 966, thereby improving the structural reliability of the second pusher 960.

[0361] Exemplarily, the first action portion 961 may be provided with a first action recess 9611, and the side wall of the first action recess 9611 is provided with a second push surface 9612, and the second push surface 9612 abuts against the push protrusion 930 of the first clutch assembly 940. The second push surface 9612 is a second arc surface, and the center of the second arc surface is located on the axis of the first clutch gear 911 of the first clutch assembly 940. When the first clutch assembly 940 is in an engaged state and a disengaged state, the second push surface 9612 always abuts against the push protrusion 930 of the first clutch assembly 940. When the driving mechanism 600 drives the second clutch gear 912, the sliding key 913 and the first clutch gear 911 to rotate synchronously, since the second pushing surface 9612 is a second arc surface, the pushing protrusion 930 of the sliding key 913 can slide along the second arc surface, which can prevent the second pushing member 960 and the second clutch motor 970 from affecting the rotation of the second clutch gear 912, the sliding key 913 and the first clutch gear 911. In addition, the second arc surface can also limit and guide the pushing protrusion 930 to improve the relative position accuracy between the sliding key 913 and the first clutch gear 911, thereby improving the functional reliability of the clutch mechanism 900.

[0362] The first action portion 961 may also be provided with a first limiting recess 9613, and the first limiting recess 9613 is sleeved on the third rotating shaft 914 of the first clutch assembly 940. When the second pusher 960 translates under the action of the second clutch motor 970 and the clutch cam 971, the second pusher 960 may be limited by the first limiting recess 9613 and the third rotating shaft 914, thereby improving the position accuracy of the second pusher 960 and thus improving the functional reliability of the clutch mechanism 900.

[0363] The second action portion 962 may be provided with a second action recess 9621, and the side wall of the second action recess 9621 may be provided with a third push surface 9622, and the third push surface 9622 abuts against the push protrusion 930 of the second clutch assembly 950. The third push surface 9622 may be a third arc surface, and the center of the third arc surface is located on the axis of the first clutch gear 911 of the second clutch assembly 950. When the second clutch assembly 950 is in the engaged state and the disengaged state, the third push surface 9622 always abuts against the push protrusion 930 of the second clutch assembly 950. When the driving mechanism 600 drives the second clutch gear 912, the sliding key 913 and the first clutch gear 911 to rotate synchronously, since the third pushing surface 9622 is a third arc surface, the pushing protrusion 930 of the sliding key 913 can slide along the third arc surface, which can prevent the second pushing member 960 and the second clutch motor 970 from affecting the rotation of the second clutch gear 912, the sliding key 913 and the first clutch gear 911. In addition, the third arc surface can also limit and guide the pushing protrusion 930 to improve the relative position accuracy between the sliding key 913 and the first clutch gear 911, thereby improving the functional reliability of the clutch mechanism 900.

[0364] The second action portion 962 is further provided with a second limiting recess 9623, which is sleeved on the third rotating shaft 914 of the second clutch assembly 950. When the second pusher 960 is translated under the action of the second clutch motor 970 and the clutch cam 971, the second pusher 960 can be limited by the second limiting recess 9623 and the third rotating shaft 914, thereby improving the position accuracy of the second pusher 960 and thus improving the functional reliability of the clutch mechanism 900.

[0365] 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.

[0366] 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, which is constructed with a refrigeration compartment; A door body, connected to the box body, used to open or close the refrigeration compartment; An automatic door opening and closing device, comprising: a drive mechanism configured to provide a driving force; an actuator, which is configured to open or close the door body under the action of the driving force; The clutch mechanism comprises: A first clutch gear and a second clutch gear are coaxially arranged and relatively rotatable, one of which is transmission-connected to the driving mechanism, and the other is transmission-connected to the actuator; a second connection recess is provided on a side of the second clutch gear facing the first clutch gear; and the first clutch gear or the second clutch gear is provided with a second sliding through hole along its radial direction; A sliding key, which is slidably connected with the first clutch gear in a radial direction, and the sliding key is provided with a pushing protrusion, and the pushing protrusion is penetrated in the second sliding through hole and extends out of the second sliding through hole; an electromagnet having a retractable push rod, wherein the push rod abuts against a portion of the push protrusion extending out of the second sliding through hole; a third elastic member connected to the sliding key and configured to apply a third force to the sliding key, wherein the direction of the third force is opposite to the extending direction of the push rod; Wherein, when the clutch mechanism is in the first state, the push rod extends, and the push rod pushes the push protrusion to slide in the second sliding through hole, so that the sliding key abuts against or separates from the circumferential side wall of the second connecting recess; when the clutch mechanism is in the second state, the push rod retracts, and under the action of the third force, the push protrusion slides in the second sliding through hole in the opposite direction, so that the sliding key separates from or abuts against the circumferential side wall of the second connecting recess.

2. The refrigerator according to claim 1, characterized in that: The clutch mechanism also includes a first pushing member, which is connected to the pushing rod. The first pushing member is provided with a first pushing surface abutting against the pushing protrusion. The first pushing surface is a first arc surface, and the center of the first arc surface is located on the axis of the first clutch gear.

3. The refrigerator according to claim 2, characterized in that: The central angle of the first arc surface is less than or equal to 180°.

4. The refrigerator according to claim 2, characterized in that: The first pushing member includes a second connecting plate and a third connecting plate, wherein the second connecting plate is perpendicular to the pushing rod and connected to the pushing rod; The third connecting plate is perpendicular to the second connecting plate, and has a first end and a second end opposite to each other. The first end of the third connecting plate is connected to the second connecting plate, and the second end of the third connecting plate is provided with the first pushing surface.

5. The refrigerator according to claim 4, characterized in that: A clamping recess is provided on one side of the second connecting plate facing away from the third connecting plate, and the clamping recess has a clamping opening facing the push rod; Along a direction parallel to the third connecting plate, the width of the clamping opening is smaller than the maximum width of the clamping recess and smaller than the width of the push rod.

6. The refrigerator according to any one of claims 1 to 5, characterized in that: A fourth sliding recess is provided on a side of the first clutch gear facing the second clutch gear, and the fourth sliding recess is provided along the radial direction of the first clutch gear; a portion of the sliding key is slidably disposed in the fourth sliding recess.

7. The refrigerator according to claim 6, characterized in that: A fifth sliding recess is further provided on a side of the first clutch gear facing the second clutch gear, the fifth sliding recess is provided along the radial direction of the first clutch gear, and is provided on both sides of the axis of the first clutch gear with the fourth sliding recess respectively, and the second sliding through hole is provided on the bottom side of the fifth sliding recess; Part of the sliding key is slidably disposed in the fifth sliding recessed portion; the pushing protrusion is connected to the sliding key located in the fifth sliding recessed portion.

8. The refrigerator according to claim 7, characterized in that: The sliding key comprises a first sliding portion, a first connecting portion, a second sliding portion and a second connecting portion, wherein the first sliding portion is slidably disposed in the fourth sliding recess; The first connecting portion is connected to the first sliding portion and is used to abut against or separate from the circumferential side wall of the second connecting recessed portion; The second sliding portion is slidably disposed in the fifth sliding recessed portion, and the second sliding portion is connected to the pushing protruding portion; The second connecting portion is located on a side of the first clutch gear facing the second clutch gear, and connects the first sliding portion and the first connecting portion.

9. The refrigerator according to claim 8, characterized in that: The fifth sliding recessed portion includes a third side wall and a fourth side wall which are arranged opposite to each other in the radial direction of the first clutch gear, and the third side wall is closer to the axis of the first clutch gear than the fourth side wall; The third elastic member is a third compression spring, and the third compression spring is located in the fifth sliding recessed portion. One end of the third compression spring abuts against the third side wall, and the other end of the third compression spring abuts against the second sliding portion.

10. A refrigerator, characterized in that: The refrigerator comprises: A box body, which is constructed with a refrigeration compartment; A door body, connected to the box body, used to open or close the refrigeration compartment; An automatic door opening and closing device, comprising: a drive mechanism configured to provide a driving force; an actuator, which is configured to open or close the door body under the action of the driving force; The clutch mechanism comprises: A first clutch gear and a second clutch gear are coaxially arranged and relatively rotatable, one of which is transmission-connected to the driving mechanism, and the other is transmission-connected to the actuator; a second connection recess is provided on a side of the second clutch gear facing the first clutch gear; and the first clutch gear or the second clutch gear is provided with a second sliding through hole along its radial direction; a sliding key, which is slidably connected to the first clutch gear, the sliding key being provided with a pushing protrusion, the pushing protrusion being penetrated in the second sliding through hole and extending out of the second sliding through hole; an electromagnet abutting against a portion of the pushing protrusion extending out of the second sliding through hole to push the pushing protrusion so that the sliding key abuts against or separates from a circumferential side wall of the second connecting recess; A third elastic member is connected to the sliding key and is configured to apply a third force to the sliding key so that the sliding key is separated from or abuts against the circumferential side wall of the second connecting recessed portion.

Images